--- /dev/null
+<?php
+
+/**
+ * This is a stub include that automatically configures the include path.
+ */
+
+set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
+require_once 'HTMLPurifier/Bootstrap.php';
+require_once 'HTMLPurifier.autoload.php';
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * @file
+ * Convenience file that registers autoload handler for HTML Purifier.
+ */
+
+if (function_exists('spl_autoload_register') && function_exists('spl_autoload_unregister')) {
+ // We need unregister for our pre-registering functionality
+ HTMLPurifier_Bootstrap::registerAutoload();
+ if (function_exists('__autoload')) {
+ // Be polite and ensure that userland autoload gets retained
+ spl_autoload_register('__autoload');
+ }
+} elseif (!function_exists('__autoload')) {
+ function __autoload($class) {
+ return HTMLPurifier_Bootstrap::autoload($class);
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * @file
+ * Defines a function wrapper for HTML Purifier for quick use.
+ * @note ''HTMLPurifier()'' is NOT the same as ''new HTMLPurifier()''
+ */
+
+/**
+ * Purify HTML.
+ * @param $html String HTML to purify
+ * @param $config Configuration to use, can be any value accepted by
+ * HTMLPurifier_Config::create()
+ */
+function HTMLPurifier($html, $config = null) {
+ static $purifier = false;
+ if (!$purifier) {
+ $purifier = new HTMLPurifier();
+ }
+ return $purifier->purify($html, $config);
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * @file
+ * This file was auto-generated by generate-includes.php and includes all of
+ * the core files required by HTML Purifier. Use this if performance is a
+ * primary concern and you are using an opcode cache. PLEASE DO NOT EDIT THIS
+ * FILE, changes will be overwritten the next time the script is run.
+ *
+ * @version 4.0.0
+ *
+ * @warning
+ * You must *not* include any other HTML Purifier files before this file,
+ * because 'require' not 'require_once' is used.
+ *
+ * @warning
+ * This file requires that the include path contains the HTML Purifier
+ * library directory; this is not auto-set.
+ */
+
+require 'HTMLPurifier.php';
+require 'HTMLPurifier/AttrCollections.php';
+require 'HTMLPurifier/AttrDef.php';
+require 'HTMLPurifier/AttrTransform.php';
+require 'HTMLPurifier/AttrTypes.php';
+require 'HTMLPurifier/AttrValidator.php';
+require 'HTMLPurifier/Bootstrap.php';
+require 'HTMLPurifier/Definition.php';
+require 'HTMLPurifier/CSSDefinition.php';
+require 'HTMLPurifier/ChildDef.php';
+require 'HTMLPurifier/Config.php';
+require 'HTMLPurifier/ConfigSchema.php';
+require 'HTMLPurifier/ContentSets.php';
+require 'HTMLPurifier/Context.php';
+require 'HTMLPurifier/DefinitionCache.php';
+require 'HTMLPurifier/DefinitionCacheFactory.php';
+require 'HTMLPurifier/Doctype.php';
+require 'HTMLPurifier/DoctypeRegistry.php';
+require 'HTMLPurifier/ElementDef.php';
+require 'HTMLPurifier/Encoder.php';
+require 'HTMLPurifier/EntityLookup.php';
+require 'HTMLPurifier/EntityParser.php';
+require 'HTMLPurifier/ErrorCollector.php';
+require 'HTMLPurifier/ErrorStruct.php';
+require 'HTMLPurifier/Exception.php';
+require 'HTMLPurifier/Filter.php';
+require 'HTMLPurifier/Generator.php';
+require 'HTMLPurifier/HTMLDefinition.php';
+require 'HTMLPurifier/HTMLModule.php';
+require 'HTMLPurifier/HTMLModuleManager.php';
+require 'HTMLPurifier/IDAccumulator.php';
+require 'HTMLPurifier/Injector.php';
+require 'HTMLPurifier/Language.php';
+require 'HTMLPurifier/LanguageFactory.php';
+require 'HTMLPurifier/Length.php';
+require 'HTMLPurifier/Lexer.php';
+require 'HTMLPurifier/PercentEncoder.php';
+require 'HTMLPurifier/PropertyList.php';
+require 'HTMLPurifier/PropertyListIterator.php';
+require 'HTMLPurifier/Strategy.php';
+require 'HTMLPurifier/StringHash.php';
+require 'HTMLPurifier/StringHashParser.php';
+require 'HTMLPurifier/TagTransform.php';
+require 'HTMLPurifier/Token.php';
+require 'HTMLPurifier/TokenFactory.php';
+require 'HTMLPurifier/URI.php';
+require 'HTMLPurifier/URIDefinition.php';
+require 'HTMLPurifier/URIFilter.php';
+require 'HTMLPurifier/URIParser.php';
+require 'HTMLPurifier/URIScheme.php';
+require 'HTMLPurifier/URISchemeRegistry.php';
+require 'HTMLPurifier/UnitConverter.php';
+require 'HTMLPurifier/VarParser.php';
+require 'HTMLPurifier/VarParserException.php';
+require 'HTMLPurifier/AttrDef/CSS.php';
+require 'HTMLPurifier/AttrDef/Enum.php';
+require 'HTMLPurifier/AttrDef/Integer.php';
+require 'HTMLPurifier/AttrDef/Lang.php';
+require 'HTMLPurifier/AttrDef/Switch.php';
+require 'HTMLPurifier/AttrDef/Text.php';
+require 'HTMLPurifier/AttrDef/URI.php';
+require 'HTMLPurifier/AttrDef/CSS/Number.php';
+require 'HTMLPurifier/AttrDef/CSS/AlphaValue.php';
+require 'HTMLPurifier/AttrDef/CSS/Background.php';
+require 'HTMLPurifier/AttrDef/CSS/BackgroundPosition.php';
+require 'HTMLPurifier/AttrDef/CSS/Border.php';
+require 'HTMLPurifier/AttrDef/CSS/Color.php';
+require 'HTMLPurifier/AttrDef/CSS/Composite.php';
+require 'HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
+require 'HTMLPurifier/AttrDef/CSS/Filter.php';
+require 'HTMLPurifier/AttrDef/CSS/Font.php';
+require 'HTMLPurifier/AttrDef/CSS/FontFamily.php';
+require 'HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
+require 'HTMLPurifier/AttrDef/CSS/Length.php';
+require 'HTMLPurifier/AttrDef/CSS/ListStyle.php';
+require 'HTMLPurifier/AttrDef/CSS/Multiple.php';
+require 'HTMLPurifier/AttrDef/CSS/Percentage.php';
+require 'HTMLPurifier/AttrDef/CSS/TextDecoration.php';
+require 'HTMLPurifier/AttrDef/CSS/URI.php';
+require 'HTMLPurifier/AttrDef/HTML/Bool.php';
+require 'HTMLPurifier/AttrDef/HTML/Nmtokens.php';
+require 'HTMLPurifier/AttrDef/HTML/Class.php';
+require 'HTMLPurifier/AttrDef/HTML/Color.php';
+require 'HTMLPurifier/AttrDef/HTML/FrameTarget.php';
+require 'HTMLPurifier/AttrDef/HTML/ID.php';
+require 'HTMLPurifier/AttrDef/HTML/Pixels.php';
+require 'HTMLPurifier/AttrDef/HTML/Length.php';
+require 'HTMLPurifier/AttrDef/HTML/LinkTypes.php';
+require 'HTMLPurifier/AttrDef/HTML/MultiLength.php';
+require 'HTMLPurifier/AttrDef/URI/Email.php';
+require 'HTMLPurifier/AttrDef/URI/Host.php';
+require 'HTMLPurifier/AttrDef/URI/IPv4.php';
+require 'HTMLPurifier/AttrDef/URI/IPv6.php';
+require 'HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php';
+require 'HTMLPurifier/AttrTransform/Background.php';
+require 'HTMLPurifier/AttrTransform/BdoDir.php';
+require 'HTMLPurifier/AttrTransform/BgColor.php';
+require 'HTMLPurifier/AttrTransform/BoolToCSS.php';
+require 'HTMLPurifier/AttrTransform/Border.php';
+require 'HTMLPurifier/AttrTransform/EnumToCSS.php';
+require 'HTMLPurifier/AttrTransform/ImgRequired.php';
+require 'HTMLPurifier/AttrTransform/ImgSpace.php';
+require 'HTMLPurifier/AttrTransform/Input.php';
+require 'HTMLPurifier/AttrTransform/Lang.php';
+require 'HTMLPurifier/AttrTransform/Length.php';
+require 'HTMLPurifier/AttrTransform/Name.php';
+require 'HTMLPurifier/AttrTransform/NameSync.php';
+require 'HTMLPurifier/AttrTransform/SafeEmbed.php';
+require 'HTMLPurifier/AttrTransform/SafeObject.php';
+require 'HTMLPurifier/AttrTransform/SafeParam.php';
+require 'HTMLPurifier/AttrTransform/ScriptRequired.php';
+require 'HTMLPurifier/AttrTransform/Textarea.php';
+require 'HTMLPurifier/ChildDef/Chameleon.php';
+require 'HTMLPurifier/ChildDef/Custom.php';
+require 'HTMLPurifier/ChildDef/Empty.php';
+require 'HTMLPurifier/ChildDef/Required.php';
+require 'HTMLPurifier/ChildDef/Optional.php';
+require 'HTMLPurifier/ChildDef/StrictBlockquote.php';
+require 'HTMLPurifier/ChildDef/Table.php';
+require 'HTMLPurifier/DefinitionCache/Decorator.php';
+require 'HTMLPurifier/DefinitionCache/Null.php';
+require 'HTMLPurifier/DefinitionCache/Serializer.php';
+require 'HTMLPurifier/DefinitionCache/Decorator/Cleanup.php';
+require 'HTMLPurifier/DefinitionCache/Decorator/Memory.php';
+require 'HTMLPurifier/HTMLModule/Bdo.php';
+require 'HTMLPurifier/HTMLModule/CommonAttributes.php';
+require 'HTMLPurifier/HTMLModule/Edit.php';
+require 'HTMLPurifier/HTMLModule/Forms.php';
+require 'HTMLPurifier/HTMLModule/Hypertext.php';
+require 'HTMLPurifier/HTMLModule/Image.php';
+require 'HTMLPurifier/HTMLModule/Legacy.php';
+require 'HTMLPurifier/HTMLModule/List.php';
+require 'HTMLPurifier/HTMLModule/Name.php';
+require 'HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
+require 'HTMLPurifier/HTMLModule/Object.php';
+require 'HTMLPurifier/HTMLModule/Presentation.php';
+require 'HTMLPurifier/HTMLModule/Proprietary.php';
+require 'HTMLPurifier/HTMLModule/Ruby.php';
+require 'HTMLPurifier/HTMLModule/SafeEmbed.php';
+require 'HTMLPurifier/HTMLModule/SafeObject.php';
+require 'HTMLPurifier/HTMLModule/Scripting.php';
+require 'HTMLPurifier/HTMLModule/StyleAttribute.php';
+require 'HTMLPurifier/HTMLModule/Tables.php';
+require 'HTMLPurifier/HTMLModule/Target.php';
+require 'HTMLPurifier/HTMLModule/Text.php';
+require 'HTMLPurifier/HTMLModule/Tidy.php';
+require 'HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Name.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Proprietary.php';
+require 'HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Strict.php';
+require 'HTMLPurifier/HTMLModule/Tidy/Transitional.php';
+require 'HTMLPurifier/HTMLModule/Tidy/XHTML.php';
+require 'HTMLPurifier/Injector/AutoParagraph.php';
+require 'HTMLPurifier/Injector/DisplayLinkURI.php';
+require 'HTMLPurifier/Injector/Linkify.php';
+require 'HTMLPurifier/Injector/PurifierLinkify.php';
+require 'HTMLPurifier/Injector/RemoveEmpty.php';
+require 'HTMLPurifier/Injector/SafeObject.php';
+require 'HTMLPurifier/Lexer/DOMLex.php';
+require 'HTMLPurifier/Lexer/DirectLex.php';
+require 'HTMLPurifier/Strategy/Composite.php';
+require 'HTMLPurifier/Strategy/Core.php';
+require 'HTMLPurifier/Strategy/FixNesting.php';
+require 'HTMLPurifier/Strategy/MakeWellFormed.php';
+require 'HTMLPurifier/Strategy/RemoveForeignElements.php';
+require 'HTMLPurifier/Strategy/ValidateAttributes.php';
+require 'HTMLPurifier/TagTransform/Font.php';
+require 'HTMLPurifier/TagTransform/Simple.php';
+require 'HTMLPurifier/Token/Comment.php';
+require 'HTMLPurifier/Token/Tag.php';
+require 'HTMLPurifier/Token/Empty.php';
+require 'HTMLPurifier/Token/End.php';
+require 'HTMLPurifier/Token/Start.php';
+require 'HTMLPurifier/Token/Text.php';
+require 'HTMLPurifier/URIFilter/DisableExternal.php';
+require 'HTMLPurifier/URIFilter/DisableExternalResources.php';
+require 'HTMLPurifier/URIFilter/HostBlacklist.php';
+require 'HTMLPurifier/URIFilter/MakeAbsolute.php';
+require 'HTMLPurifier/URIFilter/Munge.php';
+require 'HTMLPurifier/URIScheme/ftp.php';
+require 'HTMLPurifier/URIScheme/http.php';
+require 'HTMLPurifier/URIScheme/https.php';
+require 'HTMLPurifier/URIScheme/mailto.php';
+require 'HTMLPurifier/URIScheme/news.php';
+require 'HTMLPurifier/URIScheme/nntp.php';
+require 'HTMLPurifier/VarParser/Flexible.php';
+require 'HTMLPurifier/VarParser/Native.php';
--- /dev/null
+<?php
+
+/**
+ * @file
+ * Emulation layer for code that used kses(), substituting in HTML Purifier.
+ */
+
+require_once dirname(__FILE__) . '/HTMLPurifier.auto.php';
+
+function kses($string, $allowed_html, $allowed_protocols = null) {
+ $config = HTMLPurifier_Config::createDefault();
+ $allowed_elements = array();
+ $allowed_attributes = array();
+ foreach ($allowed_html as $element => $attributes) {
+ $allowed_elements[$element] = true;
+ foreach ($attributes as $attribute => $x) {
+ $allowed_attributes["$element.$attribute"] = true;
+ }
+ }
+ $config->set('HTML.AllowedElements', $allowed_elements);
+ $config->set('HTML.AllowedAttributes', $allowed_attributes);
+ $allowed_schemes = array();
+ if ($allowed_protocols !== null) {
+ $config->set('URI.AllowedSchemes', $allowed_protocols);
+ }
+ $purifier = new HTMLPurifier($config);
+ return $purifier->purify($string);
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * @file
+ * Convenience stub file that adds HTML Purifier's library file to the path
+ * without any other side-effects.
+ */
+
+set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/*! @mainpage
+ *
+ * HTML Purifier is an HTML filter that will take an arbitrary snippet of
+ * HTML and rigorously test, validate and filter it into a version that
+ * is safe for output onto webpages. It achieves this by:
+ *
+ * -# Lexing (parsing into tokens) the document,
+ * -# Executing various strategies on the tokens:
+ * -# Removing all elements not in the whitelist,
+ * -# Making the tokens well-formed,
+ * -# Fixing the nesting of the nodes, and
+ * -# Validating attributes of the nodes; and
+ * -# Generating HTML from the purified tokens.
+ *
+ * However, most users will only need to interface with the HTMLPurifier
+ * and HTMLPurifier_Config.
+ */
+
+/*
+ HTML Purifier 4.0.0 - Standards Compliant HTML Filtering
+ Copyright (C) 2006-2008 Edward Z. Yang
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * Facade that coordinates HTML Purifier's subsystems in order to purify HTML.
+ *
+ * @note There are several points in which configuration can be specified
+ * for HTML Purifier. The precedence of these (from lowest to
+ * highest) is as follows:
+ * -# Instance: new HTMLPurifier($config)
+ * -# Invocation: purify($html, $config)
+ * These configurations are entirely independent of each other and
+ * are *not* merged (this behavior may change in the future).
+ *
+ * @todo We need an easier way to inject strategies using the configuration
+ * object.
+ */
+class HTMLPurifier
+{
+
+ /** Version of HTML Purifier */
+ public $version = '4.0.0';
+
+ /** Constant with version of HTML Purifier */
+ const VERSION = '4.0.0';
+
+ /** Global configuration object */
+ public $config;
+
+ /** Array of extra HTMLPurifier_Filter objects to run on HTML, for backwards compatibility */
+ private $filters = array();
+
+ /** Single instance of HTML Purifier */
+ private static $instance;
+
+ protected $strategy, $generator;
+
+ /**
+ * Resultant HTMLPurifier_Context of last run purification. Is an array
+ * of contexts if the last called method was purifyArray().
+ */
+ public $context;
+
+ /**
+ * Initializes the purifier.
+ * @param $config Optional HTMLPurifier_Config object for all instances of
+ * the purifier, if omitted, a default configuration is
+ * supplied (which can be overridden on a per-use basis).
+ * The parameter can also be any type that
+ * HTMLPurifier_Config::create() supports.
+ */
+ public function __construct($config = null) {
+
+ $this->config = HTMLPurifier_Config::create($config);
+
+ $this->strategy = new HTMLPurifier_Strategy_Core();
+
+ }
+
+ /**
+ * Adds a filter to process the output. First come first serve
+ * @param $filter HTMLPurifier_Filter object
+ */
+ public function addFilter($filter) {
+ trigger_error('HTMLPurifier->addFilter() is deprecated, use configuration directives in the Filter namespace or Filter.Custom', E_USER_WARNING);
+ $this->filters[] = $filter;
+ }
+
+ /**
+ * Filters an HTML snippet/document to be XSS-free and standards-compliant.
+ *
+ * @param $html String of HTML to purify
+ * @param $config HTMLPurifier_Config object for this operation, if omitted,
+ * defaults to the config object specified during this
+ * object's construction. The parameter can also be any type
+ * that HTMLPurifier_Config::create() supports.
+ * @return Purified HTML
+ */
+ public function purify($html, $config = null) {
+
+ // :TODO: make the config merge in, instead of replace
+ $config = $config ? HTMLPurifier_Config::create($config) : $this->config;
+
+ // implementation is partially environment dependant, partially
+ // configuration dependant
+ $lexer = HTMLPurifier_Lexer::create($config);
+
+ $context = new HTMLPurifier_Context();
+
+ // setup HTML generator
+ $this->generator = new HTMLPurifier_Generator($config, $context);
+ $context->register('Generator', $this->generator);
+
+ // set up global context variables
+ if ($config->get('Core.CollectErrors')) {
+ // may get moved out if other facilities use it
+ $language_factory = HTMLPurifier_LanguageFactory::instance();
+ $language = $language_factory->create($config, $context);
+ $context->register('Locale', $language);
+
+ $error_collector = new HTMLPurifier_ErrorCollector($context);
+ $context->register('ErrorCollector', $error_collector);
+ }
+
+ // setup id_accumulator context, necessary due to the fact that
+ // AttrValidator can be called from many places
+ $id_accumulator = HTMLPurifier_IDAccumulator::build($config, $context);
+ $context->register('IDAccumulator', $id_accumulator);
+
+ $html = HTMLPurifier_Encoder::convertToUTF8($html, $config, $context);
+
+ // setup filters
+ $filter_flags = $config->getBatch('Filter');
+ $custom_filters = $filter_flags['Custom'];
+ unset($filter_flags['Custom']);
+ $filters = array();
+ foreach ($filter_flags as $filter => $flag) {
+ if (!$flag) continue;
+ if (strpos($filter, '.') !== false) continue;
+ $class = "HTMLPurifier_Filter_$filter";
+ $filters[] = new $class;
+ }
+ foreach ($custom_filters as $filter) {
+ // maybe "HTMLPurifier_Filter_$filter", but be consistent with AutoFormat
+ $filters[] = $filter;
+ }
+ $filters = array_merge($filters, $this->filters);
+ // maybe prepare(), but later
+
+ for ($i = 0, $filter_size = count($filters); $i < $filter_size; $i++) {
+ $html = $filters[$i]->preFilter($html, $config, $context);
+ }
+
+ // purified HTML
+ $html =
+ $this->generator->generateFromTokens(
+ // list of tokens
+ $this->strategy->execute(
+ // list of un-purified tokens
+ $lexer->tokenizeHTML(
+ // un-purified HTML
+ $html, $config, $context
+ ),
+ $config, $context
+ )
+ );
+
+ for ($i = $filter_size - 1; $i >= 0; $i--) {
+ $html = $filters[$i]->postFilter($html, $config, $context);
+ }
+
+ $html = HTMLPurifier_Encoder::convertFromUTF8($html, $config, $context);
+ $this->context =& $context;
+ return $html;
+ }
+
+ /**
+ * Filters an array of HTML snippets
+ * @param $config Optional HTMLPurifier_Config object for this operation.
+ * See HTMLPurifier::purify() for more details.
+ * @return Array of purified HTML
+ */
+ public function purifyArray($array_of_html, $config = null) {
+ $context_array = array();
+ foreach ($array_of_html as $key => $html) {
+ $array_of_html[$key] = $this->purify($html, $config);
+ $context_array[$key] = $this->context;
+ }
+ $this->context = $context_array;
+ return $array_of_html;
+ }
+
+ /**
+ * Singleton for enforcing just one HTML Purifier in your system
+ * @param $prototype Optional prototype HTMLPurifier instance to
+ * overload singleton with, or HTMLPurifier_Config
+ * instance to configure the generated version with.
+ */
+ public static function instance($prototype = null) {
+ if (!self::$instance || $prototype) {
+ if ($prototype instanceof HTMLPurifier) {
+ self::$instance = $prototype;
+ } elseif ($prototype) {
+ self::$instance = new HTMLPurifier($prototype);
+ } else {
+ self::$instance = new HTMLPurifier();
+ }
+ }
+ return self::$instance;
+ }
+
+ /**
+ * @note Backwards compatibility, see instance()
+ */
+ public static function getInstance($prototype = null) {
+ return HTMLPurifier::instance($prototype);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * @file
+ * This file was auto-generated by generate-includes.php and includes all of
+ * the core files required by HTML Purifier. This is a convenience stub that
+ * includes all files using dirname(__FILE__) and require_once. PLEASE DO NOT
+ * EDIT THIS FILE, changes will be overwritten the next time the script is run.
+ *
+ * Changes to include_path are not necessary.
+ */
+
+$__dir = dirname(__FILE__);
+
+require_once $__dir . '/HTMLPurifier.php';
+require_once $__dir . '/HTMLPurifier/AttrCollections.php';
+require_once $__dir . '/HTMLPurifier/AttrDef.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform.php';
+require_once $__dir . '/HTMLPurifier/AttrTypes.php';
+require_once $__dir . '/HTMLPurifier/AttrValidator.php';
+require_once $__dir . '/HTMLPurifier/Bootstrap.php';
+require_once $__dir . '/HTMLPurifier/Definition.php';
+require_once $__dir . '/HTMLPurifier/CSSDefinition.php';
+require_once $__dir . '/HTMLPurifier/ChildDef.php';
+require_once $__dir . '/HTMLPurifier/Config.php';
+require_once $__dir . '/HTMLPurifier/ConfigSchema.php';
+require_once $__dir . '/HTMLPurifier/ContentSets.php';
+require_once $__dir . '/HTMLPurifier/Context.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCacheFactory.php';
+require_once $__dir . '/HTMLPurifier/Doctype.php';
+require_once $__dir . '/HTMLPurifier/DoctypeRegistry.php';
+require_once $__dir . '/HTMLPurifier/ElementDef.php';
+require_once $__dir . '/HTMLPurifier/Encoder.php';
+require_once $__dir . '/HTMLPurifier/EntityLookup.php';
+require_once $__dir . '/HTMLPurifier/EntityParser.php';
+require_once $__dir . '/HTMLPurifier/ErrorCollector.php';
+require_once $__dir . '/HTMLPurifier/ErrorStruct.php';
+require_once $__dir . '/HTMLPurifier/Exception.php';
+require_once $__dir . '/HTMLPurifier/Filter.php';
+require_once $__dir . '/HTMLPurifier/Generator.php';
+require_once $__dir . '/HTMLPurifier/HTMLDefinition.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule.php';
+require_once $__dir . '/HTMLPurifier/HTMLModuleManager.php';
+require_once $__dir . '/HTMLPurifier/IDAccumulator.php';
+require_once $__dir . '/HTMLPurifier/Injector.php';
+require_once $__dir . '/HTMLPurifier/Language.php';
+require_once $__dir . '/HTMLPurifier/LanguageFactory.php';
+require_once $__dir . '/HTMLPurifier/Length.php';
+require_once $__dir . '/HTMLPurifier/Lexer.php';
+require_once $__dir . '/HTMLPurifier/PercentEncoder.php';
+require_once $__dir . '/HTMLPurifier/PropertyList.php';
+require_once $__dir . '/HTMLPurifier/PropertyListIterator.php';
+require_once $__dir . '/HTMLPurifier/Strategy.php';
+require_once $__dir . '/HTMLPurifier/StringHash.php';
+require_once $__dir . '/HTMLPurifier/StringHashParser.php';
+require_once $__dir . '/HTMLPurifier/TagTransform.php';
+require_once $__dir . '/HTMLPurifier/Token.php';
+require_once $__dir . '/HTMLPurifier/TokenFactory.php';
+require_once $__dir . '/HTMLPurifier/URI.php';
+require_once $__dir . '/HTMLPurifier/URIDefinition.php';
+require_once $__dir . '/HTMLPurifier/URIFilter.php';
+require_once $__dir . '/HTMLPurifier/URIParser.php';
+require_once $__dir . '/HTMLPurifier/URIScheme.php';
+require_once $__dir . '/HTMLPurifier/URISchemeRegistry.php';
+require_once $__dir . '/HTMLPurifier/UnitConverter.php';
+require_once $__dir . '/HTMLPurifier/VarParser.php';
+require_once $__dir . '/HTMLPurifier/VarParserException.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Enum.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Integer.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Lang.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Switch.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/Text.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Number.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/AlphaValue.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Background.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Border.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Color.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Composite.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Filter.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Font.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/FontFamily.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Length.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ListStyle.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Multiple.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Percentage.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/TextDecoration.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/CSS/URI.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Bool.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Nmtokens.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Class.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Color.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/FrameTarget.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/ID.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Pixels.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Length.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/LinkTypes.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/HTML/MultiLength.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/Email.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/Host.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/IPv4.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/IPv6.php';
+require_once $__dir . '/HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Background.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/BdoDir.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/BgColor.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/BoolToCSS.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Border.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/EnumToCSS.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/ImgRequired.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/ImgSpace.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Input.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Lang.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Length.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Name.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/NameSync.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/SafeEmbed.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/SafeObject.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/SafeParam.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/ScriptRequired.php';
+require_once $__dir . '/HTMLPurifier/AttrTransform/Textarea.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Chameleon.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Custom.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Empty.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Required.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Optional.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/StrictBlockquote.php';
+require_once $__dir . '/HTMLPurifier/ChildDef/Table.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Null.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Serializer.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator/Cleanup.php';
+require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator/Memory.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Bdo.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/CommonAttributes.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Edit.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Forms.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Hypertext.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Image.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Legacy.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/List.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Name.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Object.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Presentation.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Proprietary.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Ruby.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/SafeEmbed.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/SafeObject.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Scripting.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/StyleAttribute.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tables.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Target.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Text.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Name.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Proprietary.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Strict.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Transitional.php';
+require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/XHTML.php';
+require_once $__dir . '/HTMLPurifier/Injector/AutoParagraph.php';
+require_once $__dir . '/HTMLPurifier/Injector/DisplayLinkURI.php';
+require_once $__dir . '/HTMLPurifier/Injector/Linkify.php';
+require_once $__dir . '/HTMLPurifier/Injector/PurifierLinkify.php';
+require_once $__dir . '/HTMLPurifier/Injector/RemoveEmpty.php';
+require_once $__dir . '/HTMLPurifier/Injector/SafeObject.php';
+require_once $__dir . '/HTMLPurifier/Lexer/DOMLex.php';
+require_once $__dir . '/HTMLPurifier/Lexer/DirectLex.php';
+require_once $__dir . '/HTMLPurifier/Strategy/Composite.php';
+require_once $__dir . '/HTMLPurifier/Strategy/Core.php';
+require_once $__dir . '/HTMLPurifier/Strategy/FixNesting.php';
+require_once $__dir . '/HTMLPurifier/Strategy/MakeWellFormed.php';
+require_once $__dir . '/HTMLPurifier/Strategy/RemoveForeignElements.php';
+require_once $__dir . '/HTMLPurifier/Strategy/ValidateAttributes.php';
+require_once $__dir . '/HTMLPurifier/TagTransform/Font.php';
+require_once $__dir . '/HTMLPurifier/TagTransform/Simple.php';
+require_once $__dir . '/HTMLPurifier/Token/Comment.php';
+require_once $__dir . '/HTMLPurifier/Token/Tag.php';
+require_once $__dir . '/HTMLPurifier/Token/Empty.php';
+require_once $__dir . '/HTMLPurifier/Token/End.php';
+require_once $__dir . '/HTMLPurifier/Token/Start.php';
+require_once $__dir . '/HTMLPurifier/Token/Text.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternal.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternalResources.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/HostBlacklist.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/MakeAbsolute.php';
+require_once $__dir . '/HTMLPurifier/URIFilter/Munge.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/ftp.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/http.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/https.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/mailto.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/news.php';
+require_once $__dir . '/HTMLPurifier/URIScheme/nntp.php';
+require_once $__dir . '/HTMLPurifier/VarParser/Flexible.php';
+require_once $__dir . '/HTMLPurifier/VarParser/Native.php';
--- /dev/null
+<?php
+
+/**
+ * Defines common attribute collections that modules reference
+ */
+
+class HTMLPurifier_AttrCollections
+{
+
+ /**
+ * Associative array of attribute collections, indexed by name
+ */
+ public $info = array();
+
+ /**
+ * Performs all expansions on internal data for use by other inclusions
+ * It also collects all attribute collection extensions from
+ * modules
+ * @param $attr_types HTMLPurifier_AttrTypes instance
+ * @param $modules Hash array of HTMLPurifier_HTMLModule members
+ */
+ public function __construct($attr_types, $modules) {
+ // load extensions from the modules
+ foreach ($modules as $module) {
+ foreach ($module->attr_collections as $coll_i => $coll) {
+ if (!isset($this->info[$coll_i])) {
+ $this->info[$coll_i] = array();
+ }
+ foreach ($coll as $attr_i => $attr) {
+ if ($attr_i === 0 && isset($this->info[$coll_i][$attr_i])) {
+ // merge in includes
+ $this->info[$coll_i][$attr_i] = array_merge(
+ $this->info[$coll_i][$attr_i], $attr);
+ continue;
+ }
+ $this->info[$coll_i][$attr_i] = $attr;
+ }
+ }
+ }
+ // perform internal expansions and inclusions
+ foreach ($this->info as $name => $attr) {
+ // merge attribute collections that include others
+ $this->performInclusions($this->info[$name]);
+ // replace string identifiers with actual attribute objects
+ $this->expandIdentifiers($this->info[$name], $attr_types);
+ }
+ }
+
+ /**
+ * Takes a reference to an attribute associative array and performs
+ * all inclusions specified by the zero index.
+ * @param &$attr Reference to attribute array
+ */
+ public function performInclusions(&$attr) {
+ if (!isset($attr[0])) return;
+ $merge = $attr[0];
+ $seen = array(); // recursion guard
+ // loop through all the inclusions
+ for ($i = 0; isset($merge[$i]); $i++) {
+ if (isset($seen[$merge[$i]])) continue;
+ $seen[$merge[$i]] = true;
+ // foreach attribute of the inclusion, copy it over
+ if (!isset($this->info[$merge[$i]])) continue;
+ foreach ($this->info[$merge[$i]] as $key => $value) {
+ if (isset($attr[$key])) continue; // also catches more inclusions
+ $attr[$key] = $value;
+ }
+ if (isset($this->info[$merge[$i]][0])) {
+ // recursion
+ $merge = array_merge($merge, $this->info[$merge[$i]][0]);
+ }
+ }
+ unset($attr[0]);
+ }
+
+ /**
+ * Expands all string identifiers in an attribute array by replacing
+ * them with the appropriate values inside HTMLPurifier_AttrTypes
+ * @param &$attr Reference to attribute array
+ * @param $attr_types HTMLPurifier_AttrTypes instance
+ */
+ public function expandIdentifiers(&$attr, $attr_types) {
+
+ // because foreach will process new elements we add, make sure we
+ // skip duplicates
+ $processed = array();
+
+ foreach ($attr as $def_i => $def) {
+ // skip inclusions
+ if ($def_i === 0) continue;
+
+ if (isset($processed[$def_i])) continue;
+
+ // determine whether or not attribute is required
+ if ($required = (strpos($def_i, '*') !== false)) {
+ // rename the definition
+ unset($attr[$def_i]);
+ $def_i = trim($def_i, '*');
+ $attr[$def_i] = $def;
+ }
+
+ $processed[$def_i] = true;
+
+ // if we've already got a literal object, move on
+ if (is_object($def)) {
+ // preserve previous required
+ $attr[$def_i]->required = ($required || $attr[$def_i]->required);
+ continue;
+ }
+
+ if ($def === false) {
+ unset($attr[$def_i]);
+ continue;
+ }
+
+ if ($t = $attr_types->get($def)) {
+ $attr[$def_i] = $t;
+ $attr[$def_i]->required = $required;
+ } else {
+ unset($attr[$def_i]);
+ }
+ }
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Base class for all validating attribute definitions.
+ *
+ * This family of classes forms the core for not only HTML attribute validation,
+ * but also any sort of string that needs to be validated or cleaned (which
+ * means CSS properties and composite definitions are defined here too).
+ * Besides defining (through code) what precisely makes the string valid,
+ * subclasses are also responsible for cleaning the code if possible.
+ */
+
+abstract class HTMLPurifier_AttrDef
+{
+
+ /**
+ * Tells us whether or not an HTML attribute is minimized. Has no
+ * meaning in other contexts.
+ */
+ public $minimized = false;
+
+ /**
+ * Tells us whether or not an HTML attribute is required. Has no
+ * meaning in other contexts
+ */
+ public $required = false;
+
+ /**
+ * Validates and cleans passed string according to a definition.
+ *
+ * @param $string String to be validated and cleaned.
+ * @param $config Mandatory HTMLPurifier_Config object.
+ * @param $context Mandatory HTMLPurifier_AttrContext object.
+ */
+ abstract public function validate($string, $config, $context);
+
+ /**
+ * Convenience method that parses a string as if it were CDATA.
+ *
+ * This method process a string in the manner specified at
+ * <http://www.w3.org/TR/html4/types.html#h-6.2> by removing
+ * leading and trailing whitespace, ignoring line feeds, and replacing
+ * carriage returns and tabs with spaces. While most useful for HTML
+ * attributes specified as CDATA, it can also be applied to most CSS
+ * values.
+ *
+ * @note This method is not entirely standards compliant, as trim() removes
+ * more types of whitespace than specified in the spec. In practice,
+ * this is rarely a problem, as those extra characters usually have
+ * already been removed by HTMLPurifier_Encoder.
+ *
+ * @warning This processing is inconsistent with XML's whitespace handling
+ * as specified by section 3.3.3 and referenced XHTML 1.0 section
+ * 4.7. However, note that we are NOT necessarily
+ * parsing XML, thus, this behavior may still be correct. We
+ * assume that newlines have been normalized.
+ */
+ public function parseCDATA($string) {
+ $string = trim($string);
+ $string = str_replace(array("\n", "\t", "\r"), ' ', $string);
+ return $string;
+ }
+
+ /**
+ * Factory method for creating this class from a string.
+ * @param $string String construction info
+ * @return Created AttrDef object corresponding to $string
+ */
+ public function make($string) {
+ // default implementation, return a flyweight of this object.
+ // If $string has an effect on the returned object (i.e. you
+ // need to overload this method), it is best
+ // to clone or instantiate new copies. (Instantiation is safer.)
+ return $this;
+ }
+
+ /**
+ * Removes spaces from rgb(0, 0, 0) so that shorthand CSS properties work
+ * properly. THIS IS A HACK!
+ */
+ protected function mungeRgb($string) {
+ return preg_replace('/rgb\((\d+)\s*,\s*(\d+)\s*,\s*(\d+)\)/', 'rgb(\1,\2,\3)', $string);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates the HTML attribute style, otherwise known as CSS.
+ * @note We don't implement the whole CSS specification, so it might be
+ * difficult to reuse this component in the context of validating
+ * actual stylesheet declarations.
+ * @note If we were really serious about validating the CSS, we would
+ * tokenize the styles and then parse the tokens. Obviously, we
+ * are not doing that. Doing that could seriously harm performance,
+ * but would make these components a lot more viable for a CSS
+ * filtering solution.
+ */
+class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef
+{
+
+ public function validate($css, $config, $context) {
+
+ $css = $this->parseCDATA($css);
+
+ $definition = $config->getCSSDefinition();
+
+ // we're going to break the spec and explode by semicolons.
+ // This is because semicolon rarely appears in escaped form
+ // Doing this is generally flaky but fast
+ // IT MIGHT APPEAR IN URIs, see HTMLPurifier_AttrDef_CSSURI
+ // for details
+
+ $declarations = explode(';', $css);
+ $propvalues = array();
+
+ /**
+ * Name of the current CSS property being validated.
+ */
+ $property = false;
+ $context->register('CurrentCSSProperty', $property);
+
+ foreach ($declarations as $declaration) {
+ if (!$declaration) continue;
+ if (!strpos($declaration, ':')) continue;
+ list($property, $value) = explode(':', $declaration, 2);
+ $property = trim($property);
+ $value = trim($value);
+ $ok = false;
+ do {
+ if (isset($definition->info[$property])) {
+ $ok = true;
+ break;
+ }
+ if (ctype_lower($property)) break;
+ $property = strtolower($property);
+ if (isset($definition->info[$property])) {
+ $ok = true;
+ break;
+ }
+ } while(0);
+ if (!$ok) continue;
+ // inefficient call, since the validator will do this again
+ if (strtolower(trim($value)) !== 'inherit') {
+ // inherit works for everything (but only on the base property)
+ $result = $definition->info[$property]->validate(
+ $value, $config, $context );
+ } else {
+ $result = 'inherit';
+ }
+ if ($result === false) continue;
+ $propvalues[$property] = $result;
+ }
+
+ $context->destroy('CurrentCSSProperty');
+
+ // procedure does not write the new CSS simultaneously, so it's
+ // slightly inefficient, but it's the only way of getting rid of
+ // duplicates. Perhaps config to optimize it, but not now.
+
+ $new_declarations = '';
+ foreach ($propvalues as $prop => $value) {
+ $new_declarations .= "$prop:$value;";
+ }
+
+ return $new_declarations ? $new_declarations : false;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_AttrDef_CSS_AlphaValue extends HTMLPurifier_AttrDef_CSS_Number
+{
+
+ public function __construct() {
+ parent::__construct(false); // opacity is non-negative, but we will clamp it
+ }
+
+ public function validate($number, $config, $context) {
+ $result = parent::validate($number, $config, $context);
+ if ($result === false) return $result;
+ $float = (float) $result;
+ if ($float < 0.0) $result = '0';
+ if ($float > 1.0) $result = '1';
+ return $result;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates shorthand CSS property background.
+ * @warning Does not support url tokens that have internal spaces.
+ */
+class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Local copy of component validators.
+ * @note See HTMLPurifier_AttrDef_Font::$info for a similar impl.
+ */
+ protected $info;
+
+ public function __construct($config) {
+ $def = $config->getCSSDefinition();
+ $this->info['background-color'] = $def->info['background-color'];
+ $this->info['background-image'] = $def->info['background-image'];
+ $this->info['background-repeat'] = $def->info['background-repeat'];
+ $this->info['background-attachment'] = $def->info['background-attachment'];
+ $this->info['background-position'] = $def->info['background-position'];
+ }
+
+ public function validate($string, $config, $context) {
+
+ // regular pre-processing
+ $string = $this->parseCDATA($string);
+ if ($string === '') return false;
+
+ // munge rgb() decl if necessary
+ $string = $this->mungeRgb($string);
+
+ // assumes URI doesn't have spaces in it
+ $bits = explode(' ', strtolower($string)); // bits to process
+
+ $caught = array();
+ $caught['color'] = false;
+ $caught['image'] = false;
+ $caught['repeat'] = false;
+ $caught['attachment'] = false;
+ $caught['position'] = false;
+
+ $i = 0; // number of catches
+ $none = false;
+
+ foreach ($bits as $bit) {
+ if ($bit === '') continue;
+ foreach ($caught as $key => $status) {
+ if ($key != 'position') {
+ if ($status !== false) continue;
+ $r = $this->info['background-' . $key]->validate($bit, $config, $context);
+ } else {
+ $r = $bit;
+ }
+ if ($r === false) continue;
+ if ($key == 'position') {
+ if ($caught[$key] === false) $caught[$key] = '';
+ $caught[$key] .= $r . ' ';
+ } else {
+ $caught[$key] = $r;
+ }
+ $i++;
+ break;
+ }
+ }
+
+ if (!$i) return false;
+ if ($caught['position'] !== false) {
+ $caught['position'] = $this->info['background-position']->
+ validate($caught['position'], $config, $context);
+ }
+
+ $ret = array();
+ foreach ($caught as $value) {
+ if ($value === false) continue;
+ $ret[] = $value;
+ }
+
+ if (empty($ret)) return false;
+ return implode(' ', $ret);
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/* W3C says:
+ [ // adjective and number must be in correct order, even if
+ // you could switch them without introducing ambiguity.
+ // some browsers support that syntax
+ [
+ <percentage> | <length> | left | center | right
+ ]
+ [
+ <percentage> | <length> | top | center | bottom
+ ]?
+ ] |
+ [ // this signifies that the vertical and horizontal adjectives
+ // can be arbitrarily ordered, however, there can only be two,
+ // one of each, or none at all
+ [
+ left | center | right
+ ] ||
+ [
+ top | center | bottom
+ ]
+ ]
+ top, left = 0%
+ center, (none) = 50%
+ bottom, right = 100%
+*/
+
+/* QuirksMode says:
+ keyword + length/percentage must be ordered correctly, as per W3C
+
+ Internet Explorer and Opera, however, support arbitrary ordering. We
+ should fix it up.
+
+ Minor issue though, not strictly necessary.
+*/
+
+// control freaks may appreciate the ability to convert these to
+// percentages or something, but it's not necessary
+
+/**
+ * Validates the value of background-position.
+ */
+class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
+{
+
+ protected $length;
+ protected $percentage;
+
+ public function __construct() {
+ $this->length = new HTMLPurifier_AttrDef_CSS_Length();
+ $this->percentage = new HTMLPurifier_AttrDef_CSS_Percentage();
+ }
+
+ public function validate($string, $config, $context) {
+ $string = $this->parseCDATA($string);
+ $bits = explode(' ', $string);
+
+ $keywords = array();
+ $keywords['h'] = false; // left, right
+ $keywords['v'] = false; // top, bottom
+ $keywords['c'] = false; // center
+ $measures = array();
+
+ $i = 0;
+
+ $lookup = array(
+ 'top' => 'v',
+ 'bottom' => 'v',
+ 'left' => 'h',
+ 'right' => 'h',
+ 'center' => 'c'
+ );
+
+ foreach ($bits as $bit) {
+ if ($bit === '') continue;
+
+ // test for keyword
+ $lbit = ctype_lower($bit) ? $bit : strtolower($bit);
+ if (isset($lookup[$lbit])) {
+ $status = $lookup[$lbit];
+ $keywords[$status] = $lbit;
+ $i++;
+ }
+
+ // test for length
+ $r = $this->length->validate($bit, $config, $context);
+ if ($r !== false) {
+ $measures[] = $r;
+ $i++;
+ }
+
+ // test for percentage
+ $r = $this->percentage->validate($bit, $config, $context);
+ if ($r !== false) {
+ $measures[] = $r;
+ $i++;
+ }
+
+ }
+
+ if (!$i) return false; // no valid values were caught
+
+
+ $ret = array();
+
+ // first keyword
+ if ($keywords['h']) $ret[] = $keywords['h'];
+ elseif (count($measures)) $ret[] = array_shift($measures);
+ elseif ($keywords['c']) {
+ $ret[] = $keywords['c'];
+ $keywords['c'] = false; // prevent re-use: center = center center
+ }
+
+ if ($keywords['v']) $ret[] = $keywords['v'];
+ elseif (count($measures)) $ret[] = array_shift($measures);
+ elseif ($keywords['c']) $ret[] = $keywords['c'];
+
+ if (empty($ret)) return false;
+ return implode(' ', $ret);
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates the border property as defined by CSS.
+ */
+class HTMLPurifier_AttrDef_CSS_Border extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Local copy of properties this property is shorthand for.
+ */
+ protected $info = array();
+
+ public function __construct($config) {
+ $def = $config->getCSSDefinition();
+ $this->info['border-width'] = $def->info['border-width'];
+ $this->info['border-style'] = $def->info['border-style'];
+ $this->info['border-top-color'] = $def->info['border-top-color'];
+ }
+
+ public function validate($string, $config, $context) {
+ $string = $this->parseCDATA($string);
+ $string = $this->mungeRgb($string);
+ $bits = explode(' ', $string);
+ $done = array(); // segments we've finished
+ $ret = ''; // return value
+ foreach ($bits as $bit) {
+ foreach ($this->info as $propname => $validator) {
+ if (isset($done[$propname])) continue;
+ $r = $validator->validate($bit, $config, $context);
+ if ($r !== false) {
+ $ret .= $r . ' ';
+ $done[$propname] = true;
+ break;
+ }
+ }
+ }
+ return rtrim($ret);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates Color as defined by CSS.
+ */
+class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
+{
+
+ public function validate($color, $config, $context) {
+
+ static $colors = null;
+ if ($colors === null) $colors = $config->get('Core.ColorKeywords');
+
+ $color = trim($color);
+ if ($color === '') return false;
+
+ $lower = strtolower($color);
+ if (isset($colors[$lower])) return $colors[$lower];
+
+ if (strpos($color, 'rgb(') !== false) {
+ // rgb literal handling
+ $length = strlen($color);
+ if (strpos($color, ')') !== $length - 1) return false;
+ $triad = substr($color, 4, $length - 4 - 1);
+ $parts = explode(',', $triad);
+ if (count($parts) !== 3) return false;
+ $type = false; // to ensure that they're all the same type
+ $new_parts = array();
+ foreach ($parts as $part) {
+ $part = trim($part);
+ if ($part === '') return false;
+ $length = strlen($part);
+ if ($part[$length - 1] === '%') {
+ // handle percents
+ if (!$type) {
+ $type = 'percentage';
+ } elseif ($type !== 'percentage') {
+ return false;
+ }
+ $num = (float) substr($part, 0, $length - 1);
+ if ($num < 0) $num = 0;
+ if ($num > 100) $num = 100;
+ $new_parts[] = "$num%";
+ } else {
+ // handle integers
+ if (!$type) {
+ $type = 'integer';
+ } elseif ($type !== 'integer') {
+ return false;
+ }
+ $num = (int) $part;
+ if ($num < 0) $num = 0;
+ if ($num > 255) $num = 255;
+ $new_parts[] = (string) $num;
+ }
+ }
+ $new_triad = implode(',', $new_parts);
+ $color = "rgb($new_triad)";
+ } else {
+ // hexadecimal handling
+ if ($color[0] === '#') {
+ $hex = substr($color, 1);
+ } else {
+ $hex = $color;
+ $color = '#' . $color;
+ }
+ $length = strlen($hex);
+ if ($length !== 3 && $length !== 6) return false;
+ if (!ctype_xdigit($hex)) return false;
+ }
+
+ return $color;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Allows multiple validators to attempt to validate attribute.
+ *
+ * Composite is just what it sounds like: a composite of many validators.
+ * This means that multiple HTMLPurifier_AttrDef objects will have a whack
+ * at the string. If one of them passes, that's what is returned. This is
+ * especially useful for CSS values, which often are a choice between
+ * an enumerated set of predefined values or a flexible data type.
+ */
+class HTMLPurifier_AttrDef_CSS_Composite extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * List of HTMLPurifier_AttrDef objects that may process strings
+ * @todo Make protected
+ */
+ public $defs;
+
+ /**
+ * @param $defs List of HTMLPurifier_AttrDef objects
+ */
+ public function __construct($defs) {
+ $this->defs = $defs;
+ }
+
+ public function validate($string, $config, $context) {
+ foreach ($this->defs as $i => $def) {
+ $result = $this->defs[$i]->validate($string, $config, $context);
+ if ($result !== false) return $result;
+ }
+ return false;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Decorator which enables CSS properties to be disabled for specific elements.
+ */
+class HTMLPurifier_AttrDef_CSS_DenyElementDecorator extends HTMLPurifier_AttrDef
+{
+ public $def, $element;
+
+ /**
+ * @param $def Definition to wrap
+ * @param $element Element to deny
+ */
+ public function __construct($def, $element) {
+ $this->def = $def;
+ $this->element = $element;
+ }
+ /**
+ * Checks if CurrentToken is set and equal to $this->element
+ */
+ public function validate($string, $config, $context) {
+ $token = $context->get('CurrentToken', true);
+ if ($token && $token->name == $this->element) return false;
+ return $this->def->validate($string, $config, $context);
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Microsoft's proprietary filter: CSS property
+ * @note Currently supports the alpha filter. In the future, this will
+ * probably need an extensible framework
+ */
+class HTMLPurifier_AttrDef_CSS_Filter extends HTMLPurifier_AttrDef
+{
+
+ protected $intValidator;
+
+ public function __construct() {
+ $this->intValidator = new HTMLPurifier_AttrDef_Integer();
+ }
+
+ public function validate($value, $config, $context) {
+ $value = $this->parseCDATA($value);
+ if ($value === 'none') return $value;
+ // if we looped this we could support multiple filters
+ $function_length = strcspn($value, '(');
+ $function = trim(substr($value, 0, $function_length));
+ if ($function !== 'alpha' &&
+ $function !== 'Alpha' &&
+ $function !== 'progid:DXImageTransform.Microsoft.Alpha'
+ ) return false;
+ $cursor = $function_length + 1;
+ $parameters_length = strcspn($value, ')', $cursor);
+ $parameters = substr($value, $cursor, $parameters_length);
+ $params = explode(',', $parameters);
+ $ret_params = array();
+ $lookup = array();
+ foreach ($params as $param) {
+ list($key, $value) = explode('=', $param);
+ $key = trim($key);
+ $value = trim($value);
+ if (isset($lookup[$key])) continue;
+ if ($key !== 'opacity') continue;
+ $value = $this->intValidator->validate($value, $config, $context);
+ if ($value === false) continue;
+ $int = (int) $value;
+ if ($int > 100) $value = '100';
+ if ($int < 0) $value = '0';
+ $ret_params[] = "$key=$value";
+ $lookup[$key] = true;
+ }
+ $ret_parameters = implode(',', $ret_params);
+ $ret_function = "$function($ret_parameters)";
+ return $ret_function;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates shorthand CSS property font.
+ */
+class HTMLPurifier_AttrDef_CSS_Font extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Local copy of component validators.
+ *
+ * @note If we moved specific CSS property definitions to their own
+ * classes instead of having them be assembled at run time by
+ * CSSDefinition, this wouldn't be necessary. We'd instantiate
+ * our own copies.
+ */
+ protected $info = array();
+
+ public function __construct($config) {
+ $def = $config->getCSSDefinition();
+ $this->info['font-style'] = $def->info['font-style'];
+ $this->info['font-variant'] = $def->info['font-variant'];
+ $this->info['font-weight'] = $def->info['font-weight'];
+ $this->info['font-size'] = $def->info['font-size'];
+ $this->info['line-height'] = $def->info['line-height'];
+ $this->info['font-family'] = $def->info['font-family'];
+ }
+
+ public function validate($string, $config, $context) {
+
+ static $system_fonts = array(
+ 'caption' => true,
+ 'icon' => true,
+ 'menu' => true,
+ 'message-box' => true,
+ 'small-caption' => true,
+ 'status-bar' => true
+ );
+
+ // regular pre-processing
+ $string = $this->parseCDATA($string);
+ if ($string === '') return false;
+
+ // check if it's one of the keywords
+ $lowercase_string = strtolower($string);
+ if (isset($system_fonts[$lowercase_string])) {
+ return $lowercase_string;
+ }
+
+ $bits = explode(' ', $string); // bits to process
+ $stage = 0; // this indicates what we're looking for
+ $caught = array(); // which stage 0 properties have we caught?
+ $stage_1 = array('font-style', 'font-variant', 'font-weight');
+ $final = ''; // output
+
+ for ($i = 0, $size = count($bits); $i < $size; $i++) {
+ if ($bits[$i] === '') continue;
+ switch ($stage) {
+
+ // attempting to catch font-style, font-variant or font-weight
+ case 0:
+ foreach ($stage_1 as $validator_name) {
+ if (isset($caught[$validator_name])) continue;
+ $r = $this->info[$validator_name]->validate(
+ $bits[$i], $config, $context);
+ if ($r !== false) {
+ $final .= $r . ' ';
+ $caught[$validator_name] = true;
+ break;
+ }
+ }
+ // all three caught, continue on
+ if (count($caught) >= 3) $stage = 1;
+ if ($r !== false) break;
+
+ // attempting to catch font-size and perhaps line-height
+ case 1:
+ $found_slash = false;
+ if (strpos($bits[$i], '/') !== false) {
+ list($font_size, $line_height) =
+ explode('/', $bits[$i]);
+ if ($line_height === '') {
+ // ooh, there's a space after the slash!
+ $line_height = false;
+ $found_slash = true;
+ }
+ } else {
+ $font_size = $bits[$i];
+ $line_height = false;
+ }
+ $r = $this->info['font-size']->validate(
+ $font_size, $config, $context);
+ if ($r !== false) {
+ $final .= $r;
+ // attempt to catch line-height
+ if ($line_height === false) {
+ // we need to scroll forward
+ for ($j = $i + 1; $j < $size; $j++) {
+ if ($bits[$j] === '') continue;
+ if ($bits[$j] === '/') {
+ if ($found_slash) {
+ return false;
+ } else {
+ $found_slash = true;
+ continue;
+ }
+ }
+ $line_height = $bits[$j];
+ break;
+ }
+ } else {
+ // slash already found
+ $found_slash = true;
+ $j = $i;
+ }
+ if ($found_slash) {
+ $i = $j;
+ $r = $this->info['line-height']->validate(
+ $line_height, $config, $context);
+ if ($r !== false) {
+ $final .= '/' . $r;
+ }
+ }
+ $final .= ' ';
+ $stage = 2;
+ break;
+ }
+ return false;
+
+ // attempting to catch font-family
+ case 2:
+ $font_family =
+ implode(' ', array_slice($bits, $i, $size - $i));
+ $r = $this->info['font-family']->validate(
+ $font_family, $config, $context);
+ if ($r !== false) {
+ $final .= $r . ' ';
+ // processing completed successfully
+ return rtrim($final);
+ }
+ return false;
+ }
+ }
+ return false;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates a font family list according to CSS spec
+ * @todo whitelisting allowed fonts would be nice
+ */
+class HTMLPurifier_AttrDef_CSS_FontFamily extends HTMLPurifier_AttrDef
+{
+
+ public function validate($string, $config, $context) {
+ static $generic_names = array(
+ 'serif' => true,
+ 'sans-serif' => true,
+ 'monospace' => true,
+ 'fantasy' => true,
+ 'cursive' => true
+ );
+
+ // assume that no font names contain commas in them
+ $fonts = explode(',', $string);
+ $final = '';
+ foreach($fonts as $font) {
+ $font = trim($font);
+ if ($font === '') continue;
+ // match a generic name
+ if (isset($generic_names[$font])) {
+ $final .= $font . ', ';
+ continue;
+ }
+ // match a quoted name
+ if ($font[0] === '"' || $font[0] === "'") {
+ $length = strlen($font);
+ if ($length <= 2) continue;
+ $quote = $font[0];
+ if ($font[$length - 1] !== $quote) continue;
+ $font = substr($font, 1, $length - 2);
+
+ $new_font = '';
+ for ($i = 0, $c = strlen($font); $i < $c; $i++) {
+ if ($font[$i] === '\\') {
+ $i++;
+ if ($i >= $c) {
+ $new_font .= '\\';
+ break;
+ }
+ if (ctype_xdigit($font[$i])) {
+ $code = $font[$i];
+ for ($a = 1, $i++; $i < $c && $a < 6; $i++, $a++) {
+ if (!ctype_xdigit($font[$i])) break;
+ $code .= $font[$i];
+ }
+ // We have to be extremely careful when adding
+ // new characters, to make sure we're not breaking
+ // the encoding.
+ $char = HTMLPurifier_Encoder::unichr(hexdec($code));
+ if (HTMLPurifier_Encoder::cleanUTF8($char) === '') continue;
+ $new_font .= $char;
+ if ($i < $c && trim($font[$i]) !== '') $i--;
+ continue;
+ }
+ if ($font[$i] === "\n") continue;
+ }
+ $new_font .= $font[$i];
+ }
+
+ $font = $new_font;
+ }
+ // $font is a pure representation of the font name
+
+ if (ctype_alnum($font) && $font !== '') {
+ // very simple font, allow it in unharmed
+ $final .= $font . ', ';
+ continue;
+ }
+
+ // complicated font, requires quoting
+
+ // armor single quotes and new lines
+ $font = str_replace("\\", "\\\\", $font);
+ $font = str_replace("'", "\\'", $font);
+ $final .= "'$font', ";
+ }
+ $final = rtrim($final, ', ');
+ if ($final === '') return false;
+ return $final;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Decorator which enables !important to be used in CSS values.
+ */
+class HTMLPurifier_AttrDef_CSS_ImportantDecorator extends HTMLPurifier_AttrDef
+{
+ public $def, $allow;
+
+ /**
+ * @param $def Definition to wrap
+ * @param $allow Whether or not to allow !important
+ */
+ public function __construct($def, $allow = false) {
+ $this->def = $def;
+ $this->allow = $allow;
+ }
+ /**
+ * Intercepts and removes !important if necessary
+ */
+ public function validate($string, $config, $context) {
+ // test for ! and important tokens
+ $string = trim($string);
+ $is_important = false;
+ // :TODO: optimization: test directly for !important and ! important
+ if (strlen($string) >= 9 && substr($string, -9) === 'important') {
+ $temp = rtrim(substr($string, 0, -9));
+ // use a temp, because we might want to restore important
+ if (strlen($temp) >= 1 && substr($temp, -1) === '!') {
+ $string = rtrim(substr($temp, 0, -1));
+ $is_important = true;
+ }
+ }
+ $string = $this->def->validate($string, $config, $context);
+ if ($this->allow && $is_important) $string .= ' !important';
+ return $string;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Represents a Length as defined by CSS.
+ */
+class HTMLPurifier_AttrDef_CSS_Length extends HTMLPurifier_AttrDef
+{
+
+ protected $min, $max;
+
+ /**
+ * @param HTMLPurifier_Length $max Minimum length, or null for no bound. String is also acceptable.
+ * @param HTMLPurifier_Length $max Maximum length, or null for no bound. String is also acceptable.
+ */
+ public function __construct($min = null, $max = null) {
+ $this->min = $min !== null ? HTMLPurifier_Length::make($min) : null;
+ $this->max = $max !== null ? HTMLPurifier_Length::make($max) : null;
+ }
+
+ public function validate($string, $config, $context) {
+ $string = $this->parseCDATA($string);
+
+ // Optimizations
+ if ($string === '') return false;
+ if ($string === '0') return '0';
+ if (strlen($string) === 1) return false;
+
+ $length = HTMLPurifier_Length::make($string);
+ if (!$length->isValid()) return false;
+
+ if ($this->min) {
+ $c = $length->compareTo($this->min);
+ if ($c === false) return false;
+ if ($c < 0) return false;
+ }
+ if ($this->max) {
+ $c = $length->compareTo($this->max);
+ if ($c === false) return false;
+ if ($c > 0) return false;
+ }
+
+ return $length->toString();
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates shorthand CSS property list-style.
+ * @warning Does not support url tokens that have internal spaces.
+ */
+class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Local copy of component validators.
+ * @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.
+ */
+ protected $info;
+
+ public function __construct($config) {
+ $def = $config->getCSSDefinition();
+ $this->info['list-style-type'] = $def->info['list-style-type'];
+ $this->info['list-style-position'] = $def->info['list-style-position'];
+ $this->info['list-style-image'] = $def->info['list-style-image'];
+ }
+
+ public function validate($string, $config, $context) {
+
+ // regular pre-processing
+ $string = $this->parseCDATA($string);
+ if ($string === '') return false;
+
+ // assumes URI doesn't have spaces in it
+ $bits = explode(' ', strtolower($string)); // bits to process
+
+ $caught = array();
+ $caught['type'] = false;
+ $caught['position'] = false;
+ $caught['image'] = false;
+
+ $i = 0; // number of catches
+ $none = false;
+
+ foreach ($bits as $bit) {
+ if ($i >= 3) return; // optimization bit
+ if ($bit === '') continue;
+ foreach ($caught as $key => $status) {
+ if ($status !== false) continue;
+ $r = $this->info['list-style-' . $key]->validate($bit, $config, $context);
+ if ($r === false) continue;
+ if ($r === 'none') {
+ if ($none) continue;
+ else $none = true;
+ if ($key == 'image') continue;
+ }
+ $caught[$key] = $r;
+ $i++;
+ break;
+ }
+ }
+
+ if (!$i) return false;
+
+ $ret = array();
+
+ // construct type
+ if ($caught['type']) $ret[] = $caught['type'];
+
+ // construct image
+ if ($caught['image']) $ret[] = $caught['image'];
+
+ // construct position
+ if ($caught['position']) $ret[] = $caught['position'];
+
+ if (empty($ret)) return false;
+ return implode(' ', $ret);
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Framework class for strings that involve multiple values.
+ *
+ * Certain CSS properties such as border-width and margin allow multiple
+ * lengths to be specified. This class can take a vanilla border-width
+ * definition and multiply it, usually into a max of four.
+ *
+ * @note Even though the CSS specification isn't clear about it, inherit
+ * can only be used alone: it will never manifest as part of a multi
+ * shorthand declaration. Thus, this class does not allow inherit.
+ */
+class HTMLPurifier_AttrDef_CSS_Multiple extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Instance of component definition to defer validation to.
+ * @todo Make protected
+ */
+ public $single;
+
+ /**
+ * Max number of values allowed.
+ * @todo Make protected
+ */
+ public $max;
+
+ /**
+ * @param $single HTMLPurifier_AttrDef to multiply
+ * @param $max Max number of values allowed (usually four)
+ */
+ public function __construct($single, $max = 4) {
+ $this->single = $single;
+ $this->max = $max;
+ }
+
+ public function validate($string, $config, $context) {
+ $string = $this->parseCDATA($string);
+ if ($string === '') return false;
+ $parts = explode(' ', $string); // parseCDATA replaced \r, \t and \n
+ $length = count($parts);
+ $final = '';
+ for ($i = 0, $num = 0; $i < $length && $num < $this->max; $i++) {
+ if (ctype_space($parts[$i])) continue;
+ $result = $this->single->validate($parts[$i], $config, $context);
+ if ($result !== false) {
+ $final .= $result . ' ';
+ $num++;
+ }
+ }
+ if ($final === '') return false;
+ return rtrim($final);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates a number as defined by the CSS spec.
+ */
+class HTMLPurifier_AttrDef_CSS_Number extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Bool indicating whether or not only positive values allowed.
+ */
+ protected $non_negative = false;
+
+ /**
+ * @param $non_negative Bool indicating whether negatives are forbidden
+ */
+ public function __construct($non_negative = false) {
+ $this->non_negative = $non_negative;
+ }
+
+ /**
+ * @warning Some contexts do not pass $config, $context. These
+ * variables should not be used without checking HTMLPurifier_Length
+ */
+ public function validate($number, $config, $context) {
+
+ $number = $this->parseCDATA($number);
+
+ if ($number === '') return false;
+ if ($number === '0') return '0';
+
+ $sign = '';
+ switch ($number[0]) {
+ case '-':
+ if ($this->non_negative) return false;
+ $sign = '-';
+ case '+':
+ $number = substr($number, 1);
+ }
+
+ if (ctype_digit($number)) {
+ $number = ltrim($number, '0');
+ return $number ? $sign . $number : '0';
+ }
+
+ // Period is the only non-numeric character allowed
+ if (strpos($number, '.') === false) return false;
+
+ list($left, $right) = explode('.', $number, 2);
+
+ if ($left === '' && $right === '') return false;
+ if ($left !== '' && !ctype_digit($left)) return false;
+
+ $left = ltrim($left, '0');
+ $right = rtrim($right, '0');
+
+ if ($right === '') {
+ return $left ? $sign . $left : '0';
+ } elseif (!ctype_digit($right)) {
+ return false;
+ }
+
+ return $sign . $left . '.' . $right;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates a Percentage as defined by the CSS spec.
+ */
+class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Instance of HTMLPurifier_AttrDef_CSS_Number to defer number validation
+ */
+ protected $number_def;
+
+ /**
+ * @param Bool indicating whether to forbid negative values
+ */
+ public function __construct($non_negative = false) {
+ $this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative);
+ }
+
+ public function validate($string, $config, $context) {
+
+ $string = $this->parseCDATA($string);
+
+ if ($string === '') return false;
+ $length = strlen($string);
+ if ($length === 1) return false;
+ if ($string[$length - 1] !== '%') return false;
+
+ $number = substr($string, 0, $length - 1);
+ $number = $this->number_def->validate($number, $config, $context);
+
+ if ($number === false) return false;
+ return "$number%";
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates the value for the CSS property text-decoration
+ * @note This class could be generalized into a version that acts sort of
+ * like Enum except you can compound the allowed values.
+ */
+class HTMLPurifier_AttrDef_CSS_TextDecoration extends HTMLPurifier_AttrDef
+{
+
+ public function validate($string, $config, $context) {
+
+ static $allowed_values = array(
+ 'line-through' => true,
+ 'overline' => true,
+ 'underline' => true,
+ );
+
+ $string = strtolower($this->parseCDATA($string));
+
+ if ($string === 'none') return $string;
+
+ $parts = explode(' ', $string);
+ $final = '';
+ foreach ($parts as $part) {
+ if (isset($allowed_values[$part])) {
+ $final .= $part . ' ';
+ }
+ }
+ $final = rtrim($final);
+ if ($final === '') return false;
+ return $final;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates a URI in CSS syntax, which uses url('http://example.com')
+ * @note While theoretically speaking a URI in a CSS document could
+ * be non-embedded, as of CSS2 there is no such usage so we're
+ * generalizing it. This may need to be changed in the future.
+ * @warning Since HTMLPurifier_AttrDef_CSS blindly uses semicolons as
+ * the separator, you cannot put a literal semicolon in
+ * in the URI. Try percent encoding it, in that case.
+ */
+class HTMLPurifier_AttrDef_CSS_URI extends HTMLPurifier_AttrDef_URI
+{
+
+ public function __construct() {
+ parent::__construct(true); // always embedded
+ }
+
+ public function validate($uri_string, $config, $context) {
+ // parse the URI out of the string and then pass it onto
+ // the parent object
+
+ $uri_string = $this->parseCDATA($uri_string);
+ if (strpos($uri_string, 'url(') !== 0) return false;
+ $uri_string = substr($uri_string, 4);
+ $new_length = strlen($uri_string) - 1;
+ if ($uri_string[$new_length] != ')') return false;
+ $uri = trim(substr($uri_string, 0, $new_length));
+
+ if (!empty($uri) && ($uri[0] == "'" || $uri[0] == '"')) {
+ $quote = $uri[0];
+ $new_length = strlen($uri) - 1;
+ if ($uri[$new_length] !== $quote) return false;
+ $uri = substr($uri, 1, $new_length - 1);
+ }
+
+ $keys = array( '(', ')', ',', ' ', '"', "'");
+ $values = array('\\(', '\\)', '\\,', '\\ ', '\\"', "\\'");
+ $uri = str_replace($values, $keys, $uri);
+
+ $result = parent::validate($uri, $config, $context);
+
+ if ($result === false) return false;
+
+ // escape necessary characters according to CSS spec
+ // except for the comma, none of these should appear in the
+ // URI at all
+ $result = str_replace($keys, $values, $result);
+
+ return "url($result)";
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// Enum = Enumerated
+/**
+ * Validates a keyword against a list of valid values.
+ * @warning The case-insensitive compare of this function uses PHP's
+ * built-in strtolower and ctype_lower functions, which may
+ * cause problems with international comparisons
+ */
+class HTMLPurifier_AttrDef_Enum extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Lookup table of valid values.
+ * @todo Make protected
+ */
+ public $valid_values = array();
+
+ /**
+ * Bool indicating whether or not enumeration is case sensitive.
+ * @note In general this is always case insensitive.
+ */
+ protected $case_sensitive = false; // values according to W3C spec
+
+ /**
+ * @param $valid_values List of valid values
+ * @param $case_sensitive Bool indicating whether or not case sensitive
+ */
+ public function __construct(
+ $valid_values = array(), $case_sensitive = false
+ ) {
+ $this->valid_values = array_flip($valid_values);
+ $this->case_sensitive = $case_sensitive;
+ }
+
+ public function validate($string, $config, $context) {
+ $string = trim($string);
+ if (!$this->case_sensitive) {
+ // we may want to do full case-insensitive libraries
+ $string = ctype_lower($string) ? $string : strtolower($string);
+ }
+ $result = isset($this->valid_values[$string]);
+
+ return $result ? $string : false;
+ }
+
+ /**
+ * @param $string In form of comma-delimited list of case-insensitive
+ * valid values. Example: "foo,bar,baz". Prepend "s:" to make
+ * case sensitive
+ */
+ public function make($string) {
+ if (strlen($string) > 2 && $string[0] == 's' && $string[1] == ':') {
+ $string = substr($string, 2);
+ $sensitive = true;
+ } else {
+ $sensitive = false;
+ }
+ $values = explode(',', $string);
+ return new HTMLPurifier_AttrDef_Enum($values, $sensitive);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates a boolean attribute
+ */
+class HTMLPurifier_AttrDef_HTML_Bool extends HTMLPurifier_AttrDef
+{
+
+ protected $name;
+ public $minimized = true;
+
+ public function __construct($name = false) {$this->name = $name;}
+
+ public function validate($string, $config, $context) {
+ if (empty($string)) return false;
+ return $this->name;
+ }
+
+ /**
+ * @param $string Name of attribute
+ */
+ public function make($string) {
+ return new HTMLPurifier_AttrDef_HTML_Bool($string);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Implements special behavior for class attribute (normally NMTOKENS)
+ */
+class HTMLPurifier_AttrDef_HTML_Class extends HTMLPurifier_AttrDef_HTML_Nmtokens
+{
+ protected function split($string, $config, $context) {
+ // really, this twiddle should be lazy loaded
+ $name = $config->getDefinition('HTML')->doctype->name;
+ if ($name == "XHTML 1.1" || $name == "XHTML 2.0") {
+ return parent::split($string, $config, $context);
+ } else {
+ return preg_split('/\s+/', $string);
+ }
+ }
+ protected function filter($tokens, $config, $context) {
+ $allowed = $config->get('Attr.AllowedClasses');
+ $forbidden = $config->get('Attr.ForbiddenClasses');
+ $ret = array();
+ foreach ($tokens as $token) {
+ if (
+ ($allowed === null || isset($allowed[$token])) &&
+ !isset($forbidden[$token]) &&
+ // We need this O(n) check because of PHP's array
+ // implementation that casts -0 to 0.
+ !in_array($token, $ret, true)
+ ) {
+ $ret[] = $token;
+ }
+ }
+ return $ret;
+ }
+}
--- /dev/null
+<?php
+
+/**
+ * Validates a color according to the HTML spec.
+ */
+class HTMLPurifier_AttrDef_HTML_Color extends HTMLPurifier_AttrDef
+{
+
+ public function validate($string, $config, $context) {
+
+ static $colors = null;
+ if ($colors === null) $colors = $config->get('Core.ColorKeywords');
+
+ $string = trim($string);
+
+ if (empty($string)) return false;
+ if (isset($colors[$string])) return $colors[$string];
+ if ($string[0] === '#') $hex = substr($string, 1);
+ else $hex = $string;
+
+ $length = strlen($hex);
+ if ($length !== 3 && $length !== 6) return false;
+ if (!ctype_xdigit($hex)) return false;
+ if ($length === 3) $hex = $hex[0].$hex[0].$hex[1].$hex[1].$hex[2].$hex[2];
+
+ return "#$hex";
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Special-case enum attribute definition that lazy loads allowed frame targets
+ */
+class HTMLPurifier_AttrDef_HTML_FrameTarget extends HTMLPurifier_AttrDef_Enum
+{
+
+ public $valid_values = false; // uninitialized value
+ protected $case_sensitive = false;
+
+ public function __construct() {}
+
+ public function validate($string, $config, $context) {
+ if ($this->valid_values === false) $this->valid_values = $config->get('Attr.AllowedFrameTargets');
+ return parent::validate($string, $config, $context);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates the HTML attribute ID.
+ * @warning Even though this is the id processor, it
+ * will ignore the directive Attr:IDBlacklist, since it will only
+ * go according to the ID accumulator. Since the accumulator is
+ * automatically generated, it will have already absorbed the
+ * blacklist. If you're hacking around, make sure you use load()!
+ */
+
+class HTMLPurifier_AttrDef_HTML_ID extends HTMLPurifier_AttrDef
+{
+
+ // ref functionality disabled, since we also have to verify
+ // whether or not the ID it refers to exists
+
+ public function validate($id, $config, $context) {
+
+ if (!$config->get('Attr.EnableID')) return false;
+
+ $id = trim($id); // trim it first
+
+ if ($id === '') return false;
+
+ $prefix = $config->get('Attr.IDPrefix');
+ if ($prefix !== '') {
+ $prefix .= $config->get('Attr.IDPrefixLocal');
+ // prevent re-appending the prefix
+ if (strpos($id, $prefix) !== 0) $id = $prefix . $id;
+ } elseif ($config->get('Attr.IDPrefixLocal') !== '') {
+ trigger_error('%Attr.IDPrefixLocal cannot be used unless '.
+ '%Attr.IDPrefix is set', E_USER_WARNING);
+ }
+
+ //if (!$this->ref) {
+ $id_accumulator =& $context->get('IDAccumulator');
+ if (isset($id_accumulator->ids[$id])) return false;
+ //}
+
+ // we purposely avoid using regex, hopefully this is faster
+
+ if (ctype_alpha($id)) {
+ $result = true;
+ } else {
+ if (!ctype_alpha(@$id[0])) return false;
+ $trim = trim( // primitive style of regexps, I suppose
+ $id,
+ 'A..Za..z0..9:-._'
+ );
+ $result = ($trim === '');
+ }
+
+ $regexp = $config->get('Attr.IDBlacklistRegexp');
+ if ($regexp && preg_match($regexp, $id)) {
+ return false;
+ }
+
+ if (/*!$this->ref && */$result) $id_accumulator->add($id);
+
+ // if no change was made to the ID, return the result
+ // else, return the new id if stripping whitespace made it
+ // valid, or return false.
+ return $result ? $id : false;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates the HTML type length (not to be confused with CSS's length).
+ *
+ * This accepts integer pixels or percentages as lengths for certain
+ * HTML attributes.
+ */
+
+class HTMLPurifier_AttrDef_HTML_Length extends HTMLPurifier_AttrDef_HTML_Pixels
+{
+
+ public function validate($string, $config, $context) {
+
+ $string = trim($string);
+ if ($string === '') return false;
+
+ $parent_result = parent::validate($string, $config, $context);
+ if ($parent_result !== false) return $parent_result;
+
+ $length = strlen($string);
+ $last_char = $string[$length - 1];
+
+ if ($last_char !== '%') return false;
+
+ $points = substr($string, 0, $length - 1);
+
+ if (!is_numeric($points)) return false;
+
+ $points = (int) $points;
+
+ if ($points < 0) return '0%';
+ if ($points > 100) return '100%';
+
+ return ((string) $points) . '%';
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates a rel/rev link attribute against a directive of allowed values
+ * @note We cannot use Enum because link types allow multiple
+ * values.
+ * @note Assumes link types are ASCII text
+ */
+class HTMLPurifier_AttrDef_HTML_LinkTypes extends HTMLPurifier_AttrDef
+{
+
+ /** Name config attribute to pull. */
+ protected $name;
+
+ public function __construct($name) {
+ $configLookup = array(
+ 'rel' => 'AllowedRel',
+ 'rev' => 'AllowedRev'
+ );
+ if (!isset($configLookup[$name])) {
+ trigger_error('Unrecognized attribute name for link '.
+ 'relationship.', E_USER_ERROR);
+ return;
+ }
+ $this->name = $configLookup[$name];
+ }
+
+ public function validate($string, $config, $context) {
+
+ $allowed = $config->get('Attr.' . $this->name);
+ if (empty($allowed)) return false;
+
+ $string = $this->parseCDATA($string);
+ $parts = explode(' ', $string);
+
+ // lookup to prevent duplicates
+ $ret_lookup = array();
+ foreach ($parts as $part) {
+ $part = strtolower(trim($part));
+ if (!isset($allowed[$part])) continue;
+ $ret_lookup[$part] = true;
+ }
+
+ if (empty($ret_lookup)) return false;
+ $string = implode(' ', array_keys($ret_lookup));
+
+ return $string;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates a MultiLength as defined by the HTML spec.
+ *
+ * A multilength is either a integer (pixel count), a percentage, or
+ * a relative number.
+ */
+class HTMLPurifier_AttrDef_HTML_MultiLength extends HTMLPurifier_AttrDef_HTML_Length
+{
+
+ public function validate($string, $config, $context) {
+
+ $string = trim($string);
+ if ($string === '') return false;
+
+ $parent_result = parent::validate($string, $config, $context);
+ if ($parent_result !== false) return $parent_result;
+
+ $length = strlen($string);
+ $last_char = $string[$length - 1];
+
+ if ($last_char !== '*') return false;
+
+ $int = substr($string, 0, $length - 1);
+
+ if ($int == '') return '*';
+ if (!is_numeric($int)) return false;
+
+ $int = (int) $int;
+
+ if ($int < 0) return false;
+ if ($int == 0) return '0';
+ if ($int == 1) return '*';
+ return ((string) $int) . '*';
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates contents based on NMTOKENS attribute type.
+ */
+class HTMLPurifier_AttrDef_HTML_Nmtokens extends HTMLPurifier_AttrDef
+{
+
+ public function validate($string, $config, $context) {
+
+ $string = trim($string);
+
+ // early abort: '' and '0' (strings that convert to false) are invalid
+ if (!$string) return false;
+
+ $tokens = $this->split($string, $config, $context);
+ $tokens = $this->filter($tokens, $config, $context);
+ if (empty($tokens)) return false;
+ return implode(' ', $tokens);
+
+ }
+
+ /**
+ * Splits a space separated list of tokens into its constituent parts.
+ */
+ protected function split($string, $config, $context) {
+ // OPTIMIZABLE!
+ // do the preg_match, capture all subpatterns for reformulation
+
+ // we don't support U+00A1 and up codepoints or
+ // escaping because I don't know how to do that with regexps
+ // and plus it would complicate optimization efforts (you never
+ // see that anyway).
+ $pattern = '/(?:(?<=\s)|\A)'. // look behind for space or string start
+ '((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)'.
+ '(?:(?=\s)|\z)/'; // look ahead for space or string end
+ preg_match_all($pattern, $string, $matches);
+ return $matches[1];
+ }
+
+ /**
+ * Template method for removing certain tokens based on arbitrary criteria.
+ * @note If we wanted to be really functional, we'd do an array_filter
+ * with a callback. But... we're not.
+ */
+ protected function filter($tokens, $config, $context) {
+ return $tokens;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates an integer representation of pixels according to the HTML spec.
+ */
+class HTMLPurifier_AttrDef_HTML_Pixels extends HTMLPurifier_AttrDef
+{
+
+ protected $max;
+
+ public function __construct($max = null) {
+ $this->max = $max;
+ }
+
+ public function validate($string, $config, $context) {
+
+ $string = trim($string);
+ if ($string === '0') return $string;
+ if ($string === '') return false;
+ $length = strlen($string);
+ if (substr($string, $length - 2) == 'px') {
+ $string = substr($string, 0, $length - 2);
+ }
+ if (!is_numeric($string)) return false;
+ $int = (int) $string;
+
+ if ($int < 0) return '0';
+
+ // upper-bound value, extremely high values can
+ // crash operating systems, see <http://ha.ckers.org/imagecrash.html>
+ // WARNING, above link WILL crash you if you're using Windows
+
+ if ($this->max !== null && $int > $this->max) return (string) $this->max;
+
+ return (string) $int;
+
+ }
+
+ public function make($string) {
+ if ($string === '') $max = null;
+ else $max = (int) $string;
+ $class = get_class($this);
+ return new $class($max);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates an integer.
+ * @note While this class was modeled off the CSS definition, no currently
+ * allowed CSS uses this type. The properties that do are: widows,
+ * orphans, z-index, counter-increment, counter-reset. Some of the
+ * HTML attributes, however, find use for a non-negative version of this.
+ */
+class HTMLPurifier_AttrDef_Integer extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Bool indicating whether or not negative values are allowed
+ */
+ protected $negative = true;
+
+ /**
+ * Bool indicating whether or not zero is allowed
+ */
+ protected $zero = true;
+
+ /**
+ * Bool indicating whether or not positive values are allowed
+ */
+ protected $positive = true;
+
+ /**
+ * @param $negative Bool indicating whether or not negative values are allowed
+ * @param $zero Bool indicating whether or not zero is allowed
+ * @param $positive Bool indicating whether or not positive values are allowed
+ */
+ public function __construct(
+ $negative = true, $zero = true, $positive = true
+ ) {
+ $this->negative = $negative;
+ $this->zero = $zero;
+ $this->positive = $positive;
+ }
+
+ public function validate($integer, $config, $context) {
+
+ $integer = $this->parseCDATA($integer);
+ if ($integer === '') return false;
+
+ // we could possibly simply typecast it to integer, but there are
+ // certain fringe cases that must not return an integer.
+
+ // clip leading sign
+ if ( $this->negative && $integer[0] === '-' ) {
+ $digits = substr($integer, 1);
+ if ($digits === '0') $integer = '0'; // rm minus sign for zero
+ } elseif( $this->positive && $integer[0] === '+' ) {
+ $digits = $integer = substr($integer, 1); // rm unnecessary plus
+ } else {
+ $digits = $integer;
+ }
+
+ // test if it's numeric
+ if (!ctype_digit($digits)) return false;
+
+ // perform scope tests
+ if (!$this->zero && $integer == 0) return false;
+ if (!$this->positive && $integer > 0) return false;
+ if (!$this->negative && $integer < 0) return false;
+
+ return $integer;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates the HTML attribute lang, effectively a language code.
+ * @note Built according to RFC 3066, which obsoleted RFC 1766
+ */
+class HTMLPurifier_AttrDef_Lang extends HTMLPurifier_AttrDef
+{
+
+ public function validate($string, $config, $context) {
+
+ $string = trim($string);
+ if (!$string) return false;
+
+ $subtags = explode('-', $string);
+ $num_subtags = count($subtags);
+
+ if ($num_subtags == 0) return false; // sanity check
+
+ // process primary subtag : $subtags[0]
+ $length = strlen($subtags[0]);
+ switch ($length) {
+ case 0:
+ return false;
+ case 1:
+ if (! ($subtags[0] == 'x' || $subtags[0] == 'i') ) {
+ return false;
+ }
+ break;
+ case 2:
+ case 3:
+ if (! ctype_alpha($subtags[0]) ) {
+ return false;
+ } elseif (! ctype_lower($subtags[0]) ) {
+ $subtags[0] = strtolower($subtags[0]);
+ }
+ break;
+ default:
+ return false;
+ }
+
+ $new_string = $subtags[0];
+ if ($num_subtags == 1) return $new_string;
+
+ // process second subtag : $subtags[1]
+ $length = strlen($subtags[1]);
+ if ($length == 0 || ($length == 1 && $subtags[1] != 'x') || $length > 8 || !ctype_alnum($subtags[1])) {
+ return $new_string;
+ }
+ if (!ctype_lower($subtags[1])) $subtags[1] = strtolower($subtags[1]);
+
+ $new_string .= '-' . $subtags[1];
+ if ($num_subtags == 2) return $new_string;
+
+ // process all other subtags, index 2 and up
+ for ($i = 2; $i < $num_subtags; $i++) {
+ $length = strlen($subtags[$i]);
+ if ($length == 0 || $length > 8 || !ctype_alnum($subtags[$i])) {
+ return $new_string;
+ }
+ if (!ctype_lower($subtags[$i])) {
+ $subtags[$i] = strtolower($subtags[$i]);
+ }
+ $new_string .= '-' . $subtags[$i];
+ }
+
+ return $new_string;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Decorator that, depending on a token, switches between two definitions.
+ */
+class HTMLPurifier_AttrDef_Switch
+{
+
+ protected $tag;
+ protected $withTag, $withoutTag;
+
+ /**
+ * @param string $tag Tag name to switch upon
+ * @param HTMLPurifier_AttrDef $with_tag Call if token matches tag
+ * @param HTMLPurifier_AttrDef $without_tag Call if token doesn't match, or there is no token
+ */
+ public function __construct($tag, $with_tag, $without_tag) {
+ $this->tag = $tag;
+ $this->withTag = $with_tag;
+ $this->withoutTag = $without_tag;
+ }
+
+ public function validate($string, $config, $context) {
+ $token = $context->get('CurrentToken', true);
+ if (!$token || $token->name !== $this->tag) {
+ return $this->withoutTag->validate($string, $config, $context);
+ } else {
+ return $this->withTag->validate($string, $config, $context);
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates arbitrary text according to the HTML spec.
+ */
+class HTMLPurifier_AttrDef_Text extends HTMLPurifier_AttrDef
+{
+
+ public function validate($string, $config, $context) {
+ return $this->parseCDATA($string);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates a URI as defined by RFC 3986.
+ * @note Scheme-specific mechanics deferred to HTMLPurifier_URIScheme
+ */
+class HTMLPurifier_AttrDef_URI extends HTMLPurifier_AttrDef
+{
+
+ protected $parser;
+ protected $embedsResource;
+
+ /**
+ * @param $embeds_resource_resource Does the URI here result in an extra HTTP request?
+ */
+ public function __construct($embeds_resource = false) {
+ $this->parser = new HTMLPurifier_URIParser();
+ $this->embedsResource = (bool) $embeds_resource;
+ }
+
+ public function make($string) {
+ $embeds = (bool) $string;
+ return new HTMLPurifier_AttrDef_URI($embeds);
+ }
+
+ public function validate($uri, $config, $context) {
+
+ if ($config->get('URI.Disable')) return false;
+
+ $uri = $this->parseCDATA($uri);
+
+ // parse the URI
+ $uri = $this->parser->parse($uri);
+ if ($uri === false) return false;
+
+ // add embedded flag to context for validators
+ $context->register('EmbeddedURI', $this->embedsResource);
+
+ $ok = false;
+ do {
+
+ // generic validation
+ $result = $uri->validate($config, $context);
+ if (!$result) break;
+
+ // chained filtering
+ $uri_def = $config->getDefinition('URI');
+ $result = $uri_def->filter($uri, $config, $context);
+ if (!$result) break;
+
+ // scheme-specific validation
+ $scheme_obj = $uri->getSchemeObj($config, $context);
+ if (!$scheme_obj) break;
+ if ($this->embedsResource && !$scheme_obj->browsable) break;
+ $result = $scheme_obj->validate($uri, $config, $context);
+ if (!$result) break;
+
+ // Post chained filtering
+ $result = $uri_def->postFilter($uri, $config, $context);
+ if (!$result) break;
+
+ // survived gauntlet
+ $ok = true;
+
+ } while (false);
+
+ $context->destroy('EmbeddedURI');
+ if (!$ok) return false;
+
+ // back to string
+ return $uri->toString();
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+abstract class HTMLPurifier_AttrDef_URI_Email extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Unpacks a mailbox into its display-name and address
+ */
+ function unpack($string) {
+ // needs to be implemented
+ }
+
+}
+
+// sub-implementations
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Primitive email validation class based on the regexp found at
+ * http://www.regular-expressions.info/email.html
+ */
+class HTMLPurifier_AttrDef_URI_Email_SimpleCheck extends HTMLPurifier_AttrDef_URI_Email
+{
+
+ public function validate($string, $config, $context) {
+ // no support for named mailboxes i.e. "Bob <bob@example.com>"
+ // that needs more percent encoding to be done
+ if ($string == '') return false;
+ $string = trim($string);
+ $result = preg_match('/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i', $string);
+ return $result ? $string : false;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates a host according to the IPv4, IPv6 and DNS (future) specifications.
+ */
+class HTMLPurifier_AttrDef_URI_Host extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * Instance of HTMLPurifier_AttrDef_URI_IPv4 sub-validator
+ */
+ protected $ipv4;
+
+ /**
+ * Instance of HTMLPurifier_AttrDef_URI_IPv6 sub-validator
+ */
+ protected $ipv6;
+
+ public function __construct() {
+ $this->ipv4 = new HTMLPurifier_AttrDef_URI_IPv4();
+ $this->ipv6 = new HTMLPurifier_AttrDef_URI_IPv6();
+ }
+
+ public function validate($string, $config, $context) {
+ $length = strlen($string);
+ if ($string === '') return '';
+ if ($length > 1 && $string[0] === '[' && $string[$length-1] === ']') {
+ //IPv6
+ $ip = substr($string, 1, $length - 2);
+ $valid = $this->ipv6->validate($ip, $config, $context);
+ if ($valid === false) return false;
+ return '['. $valid . ']';
+ }
+
+ // need to do checks on unusual encodings too
+ $ipv4 = $this->ipv4->validate($string, $config, $context);
+ if ($ipv4 !== false) return $ipv4;
+
+ // A regular domain name.
+
+ // This breaks I18N domain names, but we don't have proper IRI support,
+ // so force users to insert Punycode. If there's complaining we'll
+ // try to fix things into an international friendly form.
+
+ // The productions describing this are:
+ $a = '[a-z]'; // alpha
+ $an = '[a-z0-9]'; // alphanum
+ $and = '[a-z0-9-]'; // alphanum | "-"
+ // domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
+ $domainlabel = "$an($and*$an)?";
+ // toplabel = alpha | alpha *( alphanum | "-" ) alphanum
+ $toplabel = "$a($and*$an)?";
+ // hostname = *( domainlabel "." ) toplabel [ "." ]
+ $match = preg_match("/^($domainlabel\.)*$toplabel\.?$/i", $string);
+ if (!$match) return false;
+
+ return $string;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates an IPv4 address
+ * @author Feyd @ forums.devnetwork.net (public domain)
+ */
+class HTMLPurifier_AttrDef_URI_IPv4 extends HTMLPurifier_AttrDef
+{
+
+ /**
+ * IPv4 regex, protected so that IPv6 can reuse it
+ */
+ protected $ip4;
+
+ public function validate($aIP, $config, $context) {
+
+ if (!$this->ip4) $this->_loadRegex();
+
+ if (preg_match('#^' . $this->ip4 . '$#s', $aIP))
+ {
+ return $aIP;
+ }
+
+ return false;
+
+ }
+
+ /**
+ * Lazy load function to prevent regex from being stuffed in
+ * cache.
+ */
+ protected function _loadRegex() {
+ $oct = '(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])'; // 0-255
+ $this->ip4 = "(?:{$oct}\\.{$oct}\\.{$oct}\\.{$oct})";
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates an IPv6 address.
+ * @author Feyd @ forums.devnetwork.net (public domain)
+ * @note This function requires brackets to have been removed from address
+ * in URI.
+ */
+class HTMLPurifier_AttrDef_URI_IPv6 extends HTMLPurifier_AttrDef_URI_IPv4
+{
+
+ public function validate($aIP, $config, $context) {
+
+ if (!$this->ip4) $this->_loadRegex();
+
+ $original = $aIP;
+
+ $hex = '[0-9a-fA-F]';
+ $blk = '(?:' . $hex . '{1,4})';
+ $pre = '(?:/(?:12[0-8]|1[0-1][0-9]|[1-9][0-9]|[0-9]))'; // /0 - /128
+
+ // prefix check
+ if (strpos($aIP, '/') !== false)
+ {
+ if (preg_match('#' . $pre . '$#s', $aIP, $find))
+ {
+ $aIP = substr($aIP, 0, 0-strlen($find[0]));
+ unset($find);
+ }
+ else
+ {
+ return false;
+ }
+ }
+
+ // IPv4-compatiblity check
+ if (preg_match('#(?<=:'.')' . $this->ip4 . '$#s', $aIP, $find))
+ {
+ $aIP = substr($aIP, 0, 0-strlen($find[0]));
+ $ip = explode('.', $find[0]);
+ $ip = array_map('dechex', $ip);
+ $aIP .= $ip[0] . $ip[1] . ':' . $ip[2] . $ip[3];
+ unset($find, $ip);
+ }
+
+ // compression check
+ $aIP = explode('::', $aIP);
+ $c = count($aIP);
+ if ($c > 2)
+ {
+ return false;
+ }
+ elseif ($c == 2)
+ {
+ list($first, $second) = $aIP;
+ $first = explode(':', $first);
+ $second = explode(':', $second);
+
+ if (count($first) + count($second) > 8)
+ {
+ return false;
+ }
+
+ while(count($first) < 8)
+ {
+ array_push($first, '0');
+ }
+
+ array_splice($first, 8 - count($second), 8, $second);
+ $aIP = $first;
+ unset($first,$second);
+ }
+ else
+ {
+ $aIP = explode(':', $aIP[0]);
+ }
+ $c = count($aIP);
+
+ if ($c != 8)
+ {
+ return false;
+ }
+
+ // All the pieces should be 16-bit hex strings. Are they?
+ foreach ($aIP as $piece)
+ {
+ if (!preg_match('#^[0-9a-fA-F]{4}$#s', sprintf('%04s', $piece)))
+ {
+ return false;
+ }
+ }
+
+ return $original;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Processes an entire attribute array for corrections needing multiple values.
+ *
+ * Occasionally, a certain attribute will need to be removed and popped onto
+ * another value. Instead of creating a complex return syntax for
+ * HTMLPurifier_AttrDef, we just pass the whole attribute array to a
+ * specialized object and have that do the special work. That is the
+ * family of HTMLPurifier_AttrTransform.
+ *
+ * An attribute transformation can be assigned to run before or after
+ * HTMLPurifier_AttrDef validation. See HTMLPurifier_HTMLDefinition for
+ * more details.
+ */
+
+abstract class HTMLPurifier_AttrTransform
+{
+
+ /**
+ * Abstract: makes changes to the attributes dependent on multiple values.
+ *
+ * @param $attr Assoc array of attributes, usually from
+ * HTMLPurifier_Token_Tag::$attr
+ * @param $config Mandatory HTMLPurifier_Config object.
+ * @param $context Mandatory HTMLPurifier_Context object
+ * @returns Processed attribute array.
+ */
+ abstract public function transform($attr, $config, $context);
+
+ /**
+ * Prepends CSS properties to the style attribute, creating the
+ * attribute if it doesn't exist.
+ * @param $attr Attribute array to process (passed by reference)
+ * @param $css CSS to prepend
+ */
+ public function prependCSS(&$attr, $css) {
+ $attr['style'] = isset($attr['style']) ? $attr['style'] : '';
+ $attr['style'] = $css . $attr['style'];
+ }
+
+ /**
+ * Retrieves and removes an attribute
+ * @param $attr Attribute array to process (passed by reference)
+ * @param $key Key of attribute to confiscate
+ */
+ public function confiscateAttr(&$attr, $key) {
+ if (!isset($attr[$key])) return null;
+ $value = $attr[$key];
+ unset($attr[$key]);
+ return $value;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Pre-transform that changes proprietary background attribute to CSS.
+ */
+class HTMLPurifier_AttrTransform_Background extends HTMLPurifier_AttrTransform {
+
+ public function transform($attr, $config, $context) {
+
+ if (!isset($attr['background'])) return $attr;
+
+ $background = $this->confiscateAttr($attr, 'background');
+ // some validation should happen here
+
+ $this->prependCSS($attr, "background-image:url($background);");
+
+ return $attr;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// this MUST be placed in post, as it assumes that any value in dir is valid
+
+/**
+ * Post-trasnform that ensures that bdo tags have the dir attribute set.
+ */
+class HTMLPurifier_AttrTransform_BdoDir extends HTMLPurifier_AttrTransform
+{
+
+ public function transform($attr, $config, $context) {
+ if (isset($attr['dir'])) return $attr;
+ $attr['dir'] = $config->get('Attr.DefaultTextDir');
+ return $attr;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Pre-transform that changes deprecated bgcolor attribute to CSS.
+ */
+class HTMLPurifier_AttrTransform_BgColor extends HTMLPurifier_AttrTransform {
+
+ public function transform($attr, $config, $context) {
+
+ if (!isset($attr['bgcolor'])) return $attr;
+
+ $bgcolor = $this->confiscateAttr($attr, 'bgcolor');
+ // some validation should happen here
+
+ $this->prependCSS($attr, "background-color:$bgcolor;");
+
+ return $attr;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Pre-transform that changes converts a boolean attribute to fixed CSS
+ */
+class HTMLPurifier_AttrTransform_BoolToCSS extends HTMLPurifier_AttrTransform {
+
+ /**
+ * Name of boolean attribute that is trigger
+ */
+ protected $attr;
+
+ /**
+ * CSS declarations to add to style, needs trailing semicolon
+ */
+ protected $css;
+
+ /**
+ * @param $attr string attribute name to convert from
+ * @param $css string CSS declarations to add to style (needs semicolon)
+ */
+ public function __construct($attr, $css) {
+ $this->attr = $attr;
+ $this->css = $css;
+ }
+
+ public function transform($attr, $config, $context) {
+ if (!isset($attr[$this->attr])) return $attr;
+ unset($attr[$this->attr]);
+ $this->prependCSS($attr, $this->css);
+ return $attr;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Pre-transform that changes deprecated border attribute to CSS.
+ */
+class HTMLPurifier_AttrTransform_Border extends HTMLPurifier_AttrTransform {
+
+ public function transform($attr, $config, $context) {
+ if (!isset($attr['border'])) return $attr;
+ $border_width = $this->confiscateAttr($attr, 'border');
+ // some validation should happen here
+ $this->prependCSS($attr, "border:{$border_width}px solid;");
+ return $attr;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Generic pre-transform that converts an attribute with a fixed number of
+ * values (enumerated) to CSS.
+ */
+class HTMLPurifier_AttrTransform_EnumToCSS extends HTMLPurifier_AttrTransform {
+
+ /**
+ * Name of attribute to transform from
+ */
+ protected $attr;
+
+ /**
+ * Lookup array of attribute values to CSS
+ */
+ protected $enumToCSS = array();
+
+ /**
+ * Case sensitivity of the matching
+ * @warning Currently can only be guaranteed to work with ASCII
+ * values.
+ */
+ protected $caseSensitive = false;
+
+ /**
+ * @param $attr String attribute name to transform from
+ * @param $enumToCSS Lookup array of attribute values to CSS
+ * @param $case_sensitive Boolean case sensitivity indicator, default false
+ */
+ public function __construct($attr, $enum_to_css, $case_sensitive = false) {
+ $this->attr = $attr;
+ $this->enumToCSS = $enum_to_css;
+ $this->caseSensitive = (bool) $case_sensitive;
+ }
+
+ public function transform($attr, $config, $context) {
+
+ if (!isset($attr[$this->attr])) return $attr;
+
+ $value = trim($attr[$this->attr]);
+ unset($attr[$this->attr]);
+
+ if (!$this->caseSensitive) $value = strtolower($value);
+
+ if (!isset($this->enumToCSS[$value])) {
+ return $attr;
+ }
+
+ $this->prependCSS($attr, $this->enumToCSS[$value]);
+
+ return $attr;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// must be called POST validation
+
+/**
+ * Transform that supplies default values for the src and alt attributes
+ * in img tags, as well as prevents the img tag from being removed
+ * because of a missing alt tag. This needs to be registered as both
+ * a pre and post attribute transform.
+ */
+class HTMLPurifier_AttrTransform_ImgRequired extends HTMLPurifier_AttrTransform
+{
+
+ public function transform($attr, $config, $context) {
+
+ $src = true;
+ if (!isset($attr['src'])) {
+ if ($config->get('Core.RemoveInvalidImg')) return $attr;
+ $attr['src'] = $config->get('Attr.DefaultInvalidImage');
+ $src = false;
+ }
+
+ if (!isset($attr['alt'])) {
+ if ($src) {
+ $alt = $config->get('Attr.DefaultImageAlt');
+ if ($alt === null) {
+ $attr['alt'] = basename($attr['src']);
+ } else {
+ $attr['alt'] = $alt;
+ }
+ } else {
+ $attr['alt'] = $config->get('Attr.DefaultInvalidImageAlt');
+ }
+ }
+
+ return $attr;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Pre-transform that changes deprecated hspace and vspace attributes to CSS
+ */
+class HTMLPurifier_AttrTransform_ImgSpace extends HTMLPurifier_AttrTransform {
+
+ protected $attr;
+ protected $css = array(
+ 'hspace' => array('left', 'right'),
+ 'vspace' => array('top', 'bottom')
+ );
+
+ public function __construct($attr) {
+ $this->attr = $attr;
+ if (!isset($this->css[$attr])) {
+ trigger_error(htmlspecialchars($attr) . ' is not valid space attribute');
+ }
+ }
+
+ public function transform($attr, $config, $context) {
+
+ if (!isset($attr[$this->attr])) return $attr;
+
+ $width = $this->confiscateAttr($attr, $this->attr);
+ // some validation could happen here
+
+ if (!isset($this->css[$this->attr])) return $attr;
+
+ $style = '';
+ foreach ($this->css[$this->attr] as $suffix) {
+ $property = "margin-$suffix";
+ $style .= "$property:{$width}px;";
+ }
+
+ $this->prependCSS($attr, $style);
+
+ return $attr;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Performs miscellaneous cross attribute validation and filtering for
+ * input elements. This is meant to be a post-transform.
+ */
+class HTMLPurifier_AttrTransform_Input extends HTMLPurifier_AttrTransform {
+
+ protected $pixels;
+
+ public function __construct() {
+ $this->pixels = new HTMLPurifier_AttrDef_HTML_Pixels();
+ }
+
+ public function transform($attr, $config, $context) {
+ if (!isset($attr['type'])) $t = 'text';
+ else $t = strtolower($attr['type']);
+ if (isset($attr['checked']) && $t !== 'radio' && $t !== 'checkbox') {
+ unset($attr['checked']);
+ }
+ if (isset($attr['maxlength']) && $t !== 'text' && $t !== 'password') {
+ unset($attr['maxlength']);
+ }
+ if (isset($attr['size']) && $t !== 'text' && $t !== 'password') {
+ $result = $this->pixels->validate($attr['size'], $config, $context);
+ if ($result === false) unset($attr['size']);
+ else $attr['size'] = $result;
+ }
+ if (isset($attr['src']) && $t !== 'image') {
+ unset($attr['src']);
+ }
+ if (!isset($attr['value']) && ($t === 'radio' || $t === 'checkbox')) {
+ $attr['value'] = '';
+ }
+ return $attr;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Post-transform that copies lang's value to xml:lang (and vice-versa)
+ * @note Theoretically speaking, this could be a pre-transform, but putting
+ * post is more efficient.
+ */
+class HTMLPurifier_AttrTransform_Lang extends HTMLPurifier_AttrTransform
+{
+
+ public function transform($attr, $config, $context) {
+
+ $lang = isset($attr['lang']) ? $attr['lang'] : false;
+ $xml_lang = isset($attr['xml:lang']) ? $attr['xml:lang'] : false;
+
+ if ($lang !== false && $xml_lang === false) {
+ $attr['xml:lang'] = $lang;
+ } elseif ($xml_lang !== false) {
+ $attr['lang'] = $xml_lang;
+ }
+
+ return $attr;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Class for handling width/height length attribute transformations to CSS
+ */
+class HTMLPurifier_AttrTransform_Length extends HTMLPurifier_AttrTransform
+{
+
+ protected $name;
+ protected $cssName;
+
+ public function __construct($name, $css_name = null) {
+ $this->name = $name;
+ $this->cssName = $css_name ? $css_name : $name;
+ }
+
+ public function transform($attr, $config, $context) {
+ if (!isset($attr[$this->name])) return $attr;
+ $length = $this->confiscateAttr($attr, $this->name);
+ if(ctype_digit($length)) $length .= 'px';
+ $this->prependCSS($attr, $this->cssName . ":$length;");
+ return $attr;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Pre-transform that changes deprecated name attribute to ID if necessary
+ */
+class HTMLPurifier_AttrTransform_Name extends HTMLPurifier_AttrTransform
+{
+
+ public function transform($attr, $config, $context) {
+ // Abort early if we're using relaxed definition of name
+ if ($config->get('HTML.Attr.Name.UseCDATA')) return $attr;
+ if (!isset($attr['name'])) return $attr;
+ $id = $this->confiscateAttr($attr, 'name');
+ if ( isset($attr['id'])) return $attr;
+ $attr['id'] = $id;
+ return $attr;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Post-transform that performs validation to the name attribute; if
+ * it is present with an equivalent id attribute, it is passed through;
+ * otherwise validation is performed.
+ */
+class HTMLPurifier_AttrTransform_NameSync extends HTMLPurifier_AttrTransform
+{
+
+ public function __construct() {
+ $this->idDef = new HTMLPurifier_AttrDef_HTML_ID();
+ }
+
+ public function transform($attr, $config, $context) {
+ if (!isset($attr['name'])) return $attr;
+ $name = $attr['name'];
+ if (isset($attr['id']) && $attr['id'] === $name) return $attr;
+ $result = $this->idDef->validate($name, $config, $context);
+ if ($result === false) unset($attr['name']);
+ else $attr['name'] = $result;
+ return $attr;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_AttrTransform_SafeEmbed extends HTMLPurifier_AttrTransform
+{
+ public $name = "SafeEmbed";
+
+ public function transform($attr, $config, $context) {
+ $attr['allowscriptaccess'] = 'never';
+ $attr['allownetworking'] = 'internal';
+ $attr['type'] = 'application/x-shockwave-flash';
+ return $attr;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Writes default type for all objects. Currently only supports flash.
+ */
+class HTMLPurifier_AttrTransform_SafeObject extends HTMLPurifier_AttrTransform
+{
+ public $name = "SafeObject";
+
+ function transform($attr, $config, $context) {
+ if (!isset($attr['type'])) $attr['type'] = 'application/x-shockwave-flash';
+ return $attr;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates name/value pairs in param tags to be used in safe objects. This
+ * will only allow name values it recognizes, and pre-fill certain attributes
+ * with required values.
+ *
+ * @note
+ * This class only supports Flash. In the future, Quicktime support
+ * may be added.
+ *
+ * @warning
+ * This class expects an injector to add the necessary parameters tags.
+ */
+class HTMLPurifier_AttrTransform_SafeParam extends HTMLPurifier_AttrTransform
+{
+ public $name = "SafeParam";
+ private $uri;
+
+ public function __construct() {
+ $this->uri = new HTMLPurifier_AttrDef_URI(true); // embedded
+ }
+
+ public function transform($attr, $config, $context) {
+ // If we add support for other objects, we'll need to alter the
+ // transforms.
+ switch ($attr['name']) {
+ // application/x-shockwave-flash
+ // Keep this synchronized with Injector/SafeObject.php
+ case 'allowScriptAccess':
+ $attr['value'] = 'never';
+ break;
+ case 'allowNetworking':
+ $attr['value'] = 'internal';
+ break;
+ case 'wmode':
+ $attr['value'] = 'window';
+ break;
+ case 'movie':
+ $attr['value'] = $this->uri->validate($attr['value'], $config, $context);
+ break;
+ // add other cases to support other param name/value pairs
+ default:
+ $attr['name'] = $attr['value'] = null;
+ }
+ return $attr;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Implements required attribute stipulation for <script>
+ */
+class HTMLPurifier_AttrTransform_ScriptRequired extends HTMLPurifier_AttrTransform
+{
+ public function transform($attr, $config, $context) {
+ if (!isset($attr['type'])) {
+ $attr['type'] = 'text/javascript';
+ }
+ return $attr;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Sets height/width defaults for <textarea>
+ */
+class HTMLPurifier_AttrTransform_Textarea extends HTMLPurifier_AttrTransform
+{
+
+ public function transform($attr, $config, $context) {
+ // Calculated from Firefox
+ if (!isset($attr['cols'])) $attr['cols'] = '22';
+ if (!isset($attr['rows'])) $attr['rows'] = '3';
+ return $attr;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Provides lookup array of attribute types to HTMLPurifier_AttrDef objects
+ */
+class HTMLPurifier_AttrTypes
+{
+ /**
+ * Lookup array of attribute string identifiers to concrete implementations
+ */
+ protected $info = array();
+
+ /**
+ * Constructs the info array, supplying default implementations for attribute
+ * types.
+ */
+ public function __construct() {
+ // pseudo-types, must be instantiated via shorthand
+ $this->info['Enum'] = new HTMLPurifier_AttrDef_Enum();
+ $this->info['Bool'] = new HTMLPurifier_AttrDef_HTML_Bool();
+
+ $this->info['CDATA'] = new HTMLPurifier_AttrDef_Text();
+ $this->info['ID'] = new HTMLPurifier_AttrDef_HTML_ID();
+ $this->info['Length'] = new HTMLPurifier_AttrDef_HTML_Length();
+ $this->info['MultiLength'] = new HTMLPurifier_AttrDef_HTML_MultiLength();
+ $this->info['NMTOKENS'] = new HTMLPurifier_AttrDef_HTML_Nmtokens();
+ $this->info['Pixels'] = new HTMLPurifier_AttrDef_HTML_Pixels();
+ $this->info['Text'] = new HTMLPurifier_AttrDef_Text();
+ $this->info['URI'] = new HTMLPurifier_AttrDef_URI();
+ $this->info['LanguageCode'] = new HTMLPurifier_AttrDef_Lang();
+ $this->info['Color'] = new HTMLPurifier_AttrDef_HTML_Color();
+
+ // unimplemented aliases
+ $this->info['ContentType'] = new HTMLPurifier_AttrDef_Text();
+ $this->info['ContentTypes'] = new HTMLPurifier_AttrDef_Text();
+ $this->info['Charsets'] = new HTMLPurifier_AttrDef_Text();
+ $this->info['Character'] = new HTMLPurifier_AttrDef_Text();
+
+ // "proprietary" types
+ $this->info['Class'] = new HTMLPurifier_AttrDef_HTML_Class();
+
+ // number is really a positive integer (one or more digits)
+ // FIXME: ^^ not always, see start and value of list items
+ $this->info['Number'] = new HTMLPurifier_AttrDef_Integer(false, false, true);
+ }
+
+ /**
+ * Retrieves a type
+ * @param $type String type name
+ * @return Object AttrDef for type
+ */
+ public function get($type) {
+
+ // determine if there is any extra info tacked on
+ if (strpos($type, '#') !== false) list($type, $string) = explode('#', $type, 2);
+ else $string = '';
+
+ if (!isset($this->info[$type])) {
+ trigger_error('Cannot retrieve undefined attribute type ' . $type, E_USER_ERROR);
+ return;
+ }
+
+ return $this->info[$type]->make($string);
+
+ }
+
+ /**
+ * Sets a new implementation for a type
+ * @param $type String type name
+ * @param $impl Object AttrDef for type
+ */
+ public function set($type, $impl) {
+ $this->info[$type] = $impl;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates the attributes of a token. Doesn't manage required attributes
+ * very well. The only reason we factored this out was because RemoveForeignElements
+ * also needed it besides ValidateAttributes.
+ */
+class HTMLPurifier_AttrValidator
+{
+
+ /**
+ * Validates the attributes of a token, returning a modified token
+ * that has valid tokens
+ * @param $token Reference to token to validate. We require a reference
+ * because the operation this class performs on the token are
+ * not atomic, so the context CurrentToken to be updated
+ * throughout
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ */
+ public function validateToken(&$token, &$config, $context) {
+
+ $definition = $config->getHTMLDefinition();
+ $e =& $context->get('ErrorCollector', true);
+
+ // initialize IDAccumulator if necessary
+ $ok =& $context->get('IDAccumulator', true);
+ if (!$ok) {
+ $id_accumulator = HTMLPurifier_IDAccumulator::build($config, $context);
+ $context->register('IDAccumulator', $id_accumulator);
+ }
+
+ // initialize CurrentToken if necessary
+ $current_token =& $context->get('CurrentToken', true);
+ if (!$current_token) $context->register('CurrentToken', $token);
+
+ if (
+ !$token instanceof HTMLPurifier_Token_Start &&
+ !$token instanceof HTMLPurifier_Token_Empty
+ ) return $token;
+
+ // create alias to global definition array, see also $defs
+ // DEFINITION CALL
+ $d_defs = $definition->info_global_attr;
+
+ // don't update token until the very end, to ensure an atomic update
+ $attr = $token->attr;
+
+ // do global transformations (pre)
+ // nothing currently utilizes this
+ foreach ($definition->info_attr_transform_pre as $transform) {
+ $attr = $transform->transform($o = $attr, $config, $context);
+ if ($e) {
+ if ($attr != $o) $e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
+ }
+ }
+
+ // do local transformations only applicable to this element (pre)
+ // ex. <p align="right"> to <p style="text-align:right;">
+ foreach ($definition->info[$token->name]->attr_transform_pre as $transform) {
+ $attr = $transform->transform($o = $attr, $config, $context);
+ if ($e) {
+ if ($attr != $o) $e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
+ }
+ }
+
+ // create alias to this element's attribute definition array, see
+ // also $d_defs (global attribute definition array)
+ // DEFINITION CALL
+ $defs = $definition->info[$token->name]->attr;
+
+ $attr_key = false;
+ $context->register('CurrentAttr', $attr_key);
+
+ // iterate through all the attribute keypairs
+ // Watch out for name collisions: $key has previously been used
+ foreach ($attr as $attr_key => $value) {
+
+ // call the definition
+ if ( isset($defs[$attr_key]) ) {
+ // there is a local definition defined
+ if ($defs[$attr_key] === false) {
+ // We've explicitly been told not to allow this element.
+ // This is usually when there's a global definition
+ // that must be overridden.
+ // Theoretically speaking, we could have a
+ // AttrDef_DenyAll, but this is faster!
+ $result = false;
+ } else {
+ // validate according to the element's definition
+ $result = $defs[$attr_key]->validate(
+ $value, $config, $context
+ );
+ }
+ } elseif ( isset($d_defs[$attr_key]) ) {
+ // there is a global definition defined, validate according
+ // to the global definition
+ $result = $d_defs[$attr_key]->validate(
+ $value, $config, $context
+ );
+ } else {
+ // system never heard of the attribute? DELETE!
+ $result = false;
+ }
+
+ // put the results into effect
+ if ($result === false || $result === null) {
+ // this is a generic error message that should replaced
+ // with more specific ones when possible
+ if ($e) $e->send(E_ERROR, 'AttrValidator: Attribute removed');
+
+ // remove the attribute
+ unset($attr[$attr_key]);
+ } elseif (is_string($result)) {
+ // generally, if a substitution is happening, there
+ // was some sort of implicit correction going on. We'll
+ // delegate it to the attribute classes to say exactly what.
+
+ // simple substitution
+ $attr[$attr_key] = $result;
+ } else {
+ // nothing happens
+ }
+
+ // we'd also want slightly more complicated substitution
+ // involving an array as the return value,
+ // although we're not sure how colliding attributes would
+ // resolve (certain ones would be completely overriden,
+ // others would prepend themselves).
+ }
+
+ $context->destroy('CurrentAttr');
+
+ // post transforms
+
+ // global (error reporting untested)
+ foreach ($definition->info_attr_transform_post as $transform) {
+ $attr = $transform->transform($o = $attr, $config, $context);
+ if ($e) {
+ if ($attr != $o) $e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
+ }
+ }
+
+ // local (error reporting untested)
+ foreach ($definition->info[$token->name]->attr_transform_post as $transform) {
+ $attr = $transform->transform($o = $attr, $config, $context);
+ if ($e) {
+ if ($attr != $o) $e->send(E_NOTICE, 'AttrValidator: Attributes transformed', $o, $attr);
+ }
+ }
+
+ $token->attr = $attr;
+
+ // destroy CurrentToken if we made it ourselves
+ if (!$current_token) $context->destroy('CurrentToken');
+
+ }
+
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// constants are slow, so we use as few as possible
+if (!defined('HTMLPURIFIER_PREFIX')) {
+ define('HTMLPURIFIER_PREFIX', realpath(dirname(__FILE__) . '/..'));
+}
+
+// accomodations for versions earlier than 5.0.2
+// borrowed from PHP_Compat, LGPL licensed, by Aidan Lister <aidan@php.net>
+if (!defined('PHP_EOL')) {
+ switch (strtoupper(substr(PHP_OS, 0, 3))) {
+ case 'WIN':
+ define('PHP_EOL', "\r\n");
+ break;
+ case 'DAR':
+ define('PHP_EOL', "\r");
+ break;
+ default:
+ define('PHP_EOL', "\n");
+ }
+}
+
+/**
+ * Bootstrap class that contains meta-functionality for HTML Purifier such as
+ * the autoload function.
+ *
+ * @note
+ * This class may be used without any other files from HTML Purifier.
+ */
+class HTMLPurifier_Bootstrap
+{
+
+ /**
+ * Autoload function for HTML Purifier
+ * @param $class Class to load
+ */
+ public static function autoload($class) {
+ $file = HTMLPurifier_Bootstrap::getPath($class);
+ if (!$file) return false;
+ require HTMLPURIFIER_PREFIX . '/' . $file;
+ return true;
+ }
+
+ /**
+ * Returns the path for a specific class.
+ */
+ public static function getPath($class) {
+ if (strncmp('HTMLPurifier', $class, 12) !== 0) return false;
+ // Custom implementations
+ if (strncmp('HTMLPurifier_Language_', $class, 22) === 0) {
+ $code = str_replace('_', '-', substr($class, 22));
+ $file = 'HTMLPurifier/Language/classes/' . $code . '.php';
+ } else {
+ $file = str_replace('_', '/', $class) . '.php';
+ }
+ if (!file_exists(HTMLPURIFIER_PREFIX . '/' . $file)) return false;
+ return $file;
+ }
+
+ /**
+ * "Pre-registers" our autoloader on the SPL stack.
+ */
+ public static function registerAutoload() {
+ $autoload = array('HTMLPurifier_Bootstrap', 'autoload');
+ if ( ($funcs = spl_autoload_functions()) === false ) {
+ spl_autoload_register($autoload);
+ } elseif (function_exists('spl_autoload_unregister')) {
+ $compat = version_compare(PHP_VERSION, '5.1.2', '<=') &&
+ version_compare(PHP_VERSION, '5.1.0', '>=');
+ foreach ($funcs as $func) {
+ if (is_array($func)) {
+ // :TRICKY: There are some compatibility issues and some
+ // places where we need to error out
+ $reflector = new ReflectionMethod($func[0], $func[1]);
+ if (!$reflector->isStatic()) {
+ throw new Exception('
+ HTML Purifier autoloader registrar is not compatible
+ with non-static object methods due to PHP Bug #44144;
+ Please do not use HTMLPurifier.autoload.php (or any
+ file that includes this file); instead, place the code:
+ spl_autoload_register(array(\'HTMLPurifier_Bootstrap\', \'autoload\'))
+ after your own autoloaders.
+ ');
+ }
+ // Suprisingly, spl_autoload_register supports the
+ // Class::staticMethod callback format, although call_user_func doesn't
+ if ($compat) $func = implode('::', $func);
+ }
+ spl_autoload_unregister($func);
+ }
+ spl_autoload_register($autoload);
+ foreach ($funcs as $func) spl_autoload_register($func);
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Defines allowed CSS attributes and what their values are.
+ * @see HTMLPurifier_HTMLDefinition
+ */
+class HTMLPurifier_CSSDefinition extends HTMLPurifier_Definition
+{
+
+ public $type = 'CSS';
+
+ /**
+ * Assoc array of attribute name to definition object.
+ */
+ public $info = array();
+
+ /**
+ * Constructs the info array. The meat of this class.
+ */
+ protected function doSetup($config) {
+
+ $this->info['text-align'] = new HTMLPurifier_AttrDef_Enum(
+ array('left', 'right', 'center', 'justify'), false);
+
+ $border_style =
+ $this->info['border-bottom-style'] =
+ $this->info['border-right-style'] =
+ $this->info['border-left-style'] =
+ $this->info['border-top-style'] = new HTMLPurifier_AttrDef_Enum(
+ array('none', 'hidden', 'dotted', 'dashed', 'solid', 'double',
+ 'groove', 'ridge', 'inset', 'outset'), false);
+
+ $this->info['border-style'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_style);
+
+ $this->info['clear'] = new HTMLPurifier_AttrDef_Enum(
+ array('none', 'left', 'right', 'both'), false);
+ $this->info['float'] = new HTMLPurifier_AttrDef_Enum(
+ array('none', 'left', 'right'), false);
+ $this->info['font-style'] = new HTMLPurifier_AttrDef_Enum(
+ array('normal', 'italic', 'oblique'), false);
+ $this->info['font-variant'] = new HTMLPurifier_AttrDef_Enum(
+ array('normal', 'small-caps'), false);
+
+ $uri_or_none = new HTMLPurifier_AttrDef_CSS_Composite(
+ array(
+ new HTMLPurifier_AttrDef_Enum(array('none')),
+ new HTMLPurifier_AttrDef_CSS_URI()
+ )
+ );
+
+ $this->info['list-style-position'] = new HTMLPurifier_AttrDef_Enum(
+ array('inside', 'outside'), false);
+ $this->info['list-style-type'] = new HTMLPurifier_AttrDef_Enum(
+ array('disc', 'circle', 'square', 'decimal', 'lower-roman',
+ 'upper-roman', 'lower-alpha', 'upper-alpha', 'none'), false);
+ $this->info['list-style-image'] = $uri_or_none;
+
+ $this->info['list-style'] = new HTMLPurifier_AttrDef_CSS_ListStyle($config);
+
+ $this->info['text-transform'] = new HTMLPurifier_AttrDef_Enum(
+ array('capitalize', 'uppercase', 'lowercase', 'none'), false);
+ $this->info['color'] = new HTMLPurifier_AttrDef_CSS_Color();
+
+ $this->info['background-image'] = $uri_or_none;
+ $this->info['background-repeat'] = new HTMLPurifier_AttrDef_Enum(
+ array('repeat', 'repeat-x', 'repeat-y', 'no-repeat')
+ );
+ $this->info['background-attachment'] = new HTMLPurifier_AttrDef_Enum(
+ array('scroll', 'fixed')
+ );
+ $this->info['background-position'] = new HTMLPurifier_AttrDef_CSS_BackgroundPosition();
+
+ $border_color =
+ $this->info['border-top-color'] =
+ $this->info['border-bottom-color'] =
+ $this->info['border-left-color'] =
+ $this->info['border-right-color'] =
+ $this->info['background-color'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_Enum(array('transparent')),
+ new HTMLPurifier_AttrDef_CSS_Color()
+ ));
+
+ $this->info['background'] = new HTMLPurifier_AttrDef_CSS_Background($config);
+
+ $this->info['border-color'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_color);
+
+ $border_width =
+ $this->info['border-top-width'] =
+ $this->info['border-bottom-width'] =
+ $this->info['border-left-width'] =
+ $this->info['border-right-width'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_Enum(array('thin', 'medium', 'thick')),
+ new HTMLPurifier_AttrDef_CSS_Length('0') //disallow negative
+ ));
+
+ $this->info['border-width'] = new HTMLPurifier_AttrDef_CSS_Multiple($border_width);
+
+ $this->info['letter-spacing'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_Enum(array('normal')),
+ new HTMLPurifier_AttrDef_CSS_Length()
+ ));
+
+ $this->info['word-spacing'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_Enum(array('normal')),
+ new HTMLPurifier_AttrDef_CSS_Length()
+ ));
+
+ $this->info['font-size'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_Enum(array('xx-small', 'x-small',
+ 'small', 'medium', 'large', 'x-large', 'xx-large',
+ 'larger', 'smaller')),
+ new HTMLPurifier_AttrDef_CSS_Percentage(),
+ new HTMLPurifier_AttrDef_CSS_Length()
+ ));
+
+ $this->info['line-height'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_Enum(array('normal')),
+ new HTMLPurifier_AttrDef_CSS_Number(true), // no negatives
+ new HTMLPurifier_AttrDef_CSS_Length('0'),
+ new HTMLPurifier_AttrDef_CSS_Percentage(true)
+ ));
+
+ $margin =
+ $this->info['margin-top'] =
+ $this->info['margin-bottom'] =
+ $this->info['margin-left'] =
+ $this->info['margin-right'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_CSS_Length(),
+ new HTMLPurifier_AttrDef_CSS_Percentage(),
+ new HTMLPurifier_AttrDef_Enum(array('auto'))
+ ));
+
+ $this->info['margin'] = new HTMLPurifier_AttrDef_CSS_Multiple($margin);
+
+ // non-negative
+ $padding =
+ $this->info['padding-top'] =
+ $this->info['padding-bottom'] =
+ $this->info['padding-left'] =
+ $this->info['padding-right'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_CSS_Length('0'),
+ new HTMLPurifier_AttrDef_CSS_Percentage(true)
+ ));
+
+ $this->info['padding'] = new HTMLPurifier_AttrDef_CSS_Multiple($padding);
+
+ $this->info['text-indent'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_CSS_Length(),
+ new HTMLPurifier_AttrDef_CSS_Percentage()
+ ));
+
+ $trusted_wh = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_CSS_Length('0'),
+ new HTMLPurifier_AttrDef_CSS_Percentage(true),
+ new HTMLPurifier_AttrDef_Enum(array('auto'))
+ ));
+ $max = $config->get('CSS.MaxImgLength');
+
+ $this->info['width'] =
+ $this->info['height'] =
+ $max === null ?
+ $trusted_wh :
+ new HTMLPurifier_AttrDef_Switch('img',
+ // For img tags:
+ new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_CSS_Length('0', $max),
+ new HTMLPurifier_AttrDef_Enum(array('auto'))
+ )),
+ // For everyone else:
+ $trusted_wh
+ );
+
+ $this->info['text-decoration'] = new HTMLPurifier_AttrDef_CSS_TextDecoration();
+
+ $this->info['font-family'] = new HTMLPurifier_AttrDef_CSS_FontFamily();
+
+ // this could use specialized code
+ $this->info['font-weight'] = new HTMLPurifier_AttrDef_Enum(
+ array('normal', 'bold', 'bolder', 'lighter', '100', '200', '300',
+ '400', '500', '600', '700', '800', '900'), false);
+
+ // MUST be called after other font properties, as it references
+ // a CSSDefinition object
+ $this->info['font'] = new HTMLPurifier_AttrDef_CSS_Font($config);
+
+ // same here
+ $this->info['border'] =
+ $this->info['border-bottom'] =
+ $this->info['border-top'] =
+ $this->info['border-left'] =
+ $this->info['border-right'] = new HTMLPurifier_AttrDef_CSS_Border($config);
+
+ $this->info['border-collapse'] = new HTMLPurifier_AttrDef_Enum(array(
+ 'collapse', 'separate'));
+
+ $this->info['caption-side'] = new HTMLPurifier_AttrDef_Enum(array(
+ 'top', 'bottom'));
+
+ $this->info['table-layout'] = new HTMLPurifier_AttrDef_Enum(array(
+ 'auto', 'fixed'));
+
+ $this->info['vertical-align'] = new HTMLPurifier_AttrDef_CSS_Composite(array(
+ new HTMLPurifier_AttrDef_Enum(array('baseline', 'sub', 'super',
+ 'top', 'text-top', 'middle', 'bottom', 'text-bottom')),
+ new HTMLPurifier_AttrDef_CSS_Length(),
+ new HTMLPurifier_AttrDef_CSS_Percentage()
+ ));
+
+ $this->info['border-spacing'] = new HTMLPurifier_AttrDef_CSS_Multiple(new HTMLPurifier_AttrDef_CSS_Length(), 2);
+
+ // partial support
+ $this->info['white-space'] = new HTMLPurifier_AttrDef_Enum(array('nowrap'));
+
+ if ($config->get('CSS.Proprietary')) {
+ $this->doSetupProprietary($config);
+ }
+
+ if ($config->get('CSS.AllowTricky')) {
+ $this->doSetupTricky($config);
+ }
+
+ $allow_important = $config->get('CSS.AllowImportant');
+ // wrap all attr-defs with decorator that handles !important
+ foreach ($this->info as $k => $v) {
+ $this->info[$k] = new HTMLPurifier_AttrDef_CSS_ImportantDecorator($v, $allow_important);
+ }
+
+ $this->setupConfigStuff($config);
+ }
+
+ protected function doSetupProprietary($config) {
+ // Internet Explorer only scrollbar colors
+ $this->info['scrollbar-arrow-color'] = new HTMLPurifier_AttrDef_CSS_Color();
+ $this->info['scrollbar-base-color'] = new HTMLPurifier_AttrDef_CSS_Color();
+ $this->info['scrollbar-darkshadow-color'] = new HTMLPurifier_AttrDef_CSS_Color();
+ $this->info['scrollbar-face-color'] = new HTMLPurifier_AttrDef_CSS_Color();
+ $this->info['scrollbar-highlight-color'] = new HTMLPurifier_AttrDef_CSS_Color();
+ $this->info['scrollbar-shadow-color'] = new HTMLPurifier_AttrDef_CSS_Color();
+
+ // technically not proprietary, but CSS3, and no one supports it
+ $this->info['opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
+ $this->info['-moz-opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
+ $this->info['-khtml-opacity'] = new HTMLPurifier_AttrDef_CSS_AlphaValue();
+
+ // only opacity, for now
+ $this->info['filter'] = new HTMLPurifier_AttrDef_CSS_Filter();
+
+ }
+
+ protected function doSetupTricky($config) {
+ $this->info['display'] = new HTMLPurifier_AttrDef_Enum(array(
+ 'inline', 'block', 'list-item', 'run-in', 'compact',
+ 'marker', 'table', 'inline-table', 'table-row-group',
+ 'table-header-group', 'table-footer-group', 'table-row',
+ 'table-column-group', 'table-column', 'table-cell', 'table-caption', 'none'
+ ));
+ $this->info['visibility'] = new HTMLPurifier_AttrDef_Enum(array(
+ 'visible', 'hidden', 'collapse'
+ ));
+ $this->info['overflow'] = new HTMLPurifier_AttrDef_Enum(array('visible', 'hidden', 'auto', 'scroll'));
+ }
+
+
+ /**
+ * Performs extra config-based processing. Based off of
+ * HTMLPurifier_HTMLDefinition.
+ * @todo Refactor duplicate elements into common class (probably using
+ * composition, not inheritance).
+ */
+ protected function setupConfigStuff($config) {
+
+ // setup allowed elements
+ $support = "(for information on implementing this, see the ".
+ "support forums) ";
+ $allowed_attributes = $config->get('CSS.AllowedProperties');
+ if ($allowed_attributes !== null) {
+ foreach ($this->info as $name => $d) {
+ if(!isset($allowed_attributes[$name])) unset($this->info[$name]);
+ unset($allowed_attributes[$name]);
+ }
+ // emit errors
+ foreach ($allowed_attributes as $name => $d) {
+ // :TODO: Is this htmlspecialchars() call really necessary?
+ $name = htmlspecialchars($name);
+ trigger_error("Style attribute '$name' is not supported $support", E_USER_WARNING);
+ }
+ }
+
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Defines allowed child nodes and validates tokens against it.
+ */
+abstract class HTMLPurifier_ChildDef
+{
+ /**
+ * Type of child definition, usually right-most part of class name lowercase.
+ * Used occasionally in terms of context.
+ */
+ public $type;
+
+ /**
+ * Bool that indicates whether or not an empty array of children is okay
+ *
+ * This is necessary for redundant checking when changes affecting
+ * a child node may cause a parent node to now be disallowed.
+ */
+ public $allow_empty;
+
+ /**
+ * Lookup array of all elements that this definition could possibly allow
+ */
+ public $elements = array();
+
+ /**
+ * Get lookup of tag names that should not close this element automatically.
+ * All other elements will do so.
+ */
+ public function getAllowedElements($config) {
+ return $this->elements;
+ }
+
+ /**
+ * Validates nodes according to definition and returns modification.
+ *
+ * @param $tokens_of_children Array of HTMLPurifier_Token
+ * @param $config HTMLPurifier_Config object
+ * @param $context HTMLPurifier_Context object
+ * @return bool true to leave nodes as is
+ * @return bool false to remove parent node
+ * @return array of replacement child tokens
+ */
+ abstract public function validateChildren($tokens_of_children, $config, $context);
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Definition that uses different definitions depending on context.
+ *
+ * The del and ins tags are notable because they allow different types of
+ * elements depending on whether or not they're in a block or inline context.
+ * Chameleon allows this behavior to happen by using two different
+ * definitions depending on context. While this somewhat generalized,
+ * it is specifically intended for those two tags.
+ */
+class HTMLPurifier_ChildDef_Chameleon extends HTMLPurifier_ChildDef
+{
+
+ /**
+ * Instance of the definition object to use when inline. Usually stricter.
+ */
+ public $inline;
+
+ /**
+ * Instance of the definition object to use when block.
+ */
+ public $block;
+
+ public $type = 'chameleon';
+
+ /**
+ * @param $inline List of elements to allow when inline.
+ * @param $block List of elements to allow when block.
+ */
+ public function __construct($inline, $block) {
+ $this->inline = new HTMLPurifier_ChildDef_Optional($inline);
+ $this->block = new HTMLPurifier_ChildDef_Optional($block);
+ $this->elements = $this->block->elements;
+ }
+
+ public function validateChildren($tokens_of_children, $config, $context) {
+ if ($context->get('IsInline') === false) {
+ return $this->block->validateChildren(
+ $tokens_of_children, $config, $context);
+ } else {
+ return $this->inline->validateChildren(
+ $tokens_of_children, $config, $context);
+ }
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Custom validation class, accepts DTD child definitions
+ *
+ * @warning Currently this class is an all or nothing proposition, that is,
+ * it will only give a bool return value.
+ */
+class HTMLPurifier_ChildDef_Custom extends HTMLPurifier_ChildDef
+{
+ public $type = 'custom';
+ public $allow_empty = false;
+ /**
+ * Allowed child pattern as defined by the DTD
+ */
+ public $dtd_regex;
+ /**
+ * PCRE regex derived from $dtd_regex
+ * @private
+ */
+ private $_pcre_regex;
+ /**
+ * @param $dtd_regex Allowed child pattern from the DTD
+ */
+ public function __construct($dtd_regex) {
+ $this->dtd_regex = $dtd_regex;
+ $this->_compileRegex();
+ }
+ /**
+ * Compiles the PCRE regex from a DTD regex ($dtd_regex to $_pcre_regex)
+ */
+ protected function _compileRegex() {
+ $raw = str_replace(' ', '', $this->dtd_regex);
+ if ($raw{0} != '(') {
+ $raw = "($raw)";
+ }
+ $el = '[#a-zA-Z0-9_.-]+';
+ $reg = $raw;
+
+ // COMPLICATED! AND MIGHT BE BUGGY! I HAVE NO CLUE WHAT I'M
+ // DOING! Seriously: if there's problems, please report them.
+
+ // collect all elements into the $elements array
+ preg_match_all("/$el/", $reg, $matches);
+ foreach ($matches[0] as $match) {
+ $this->elements[$match] = true;
+ }
+
+ // setup all elements as parentheticals with leading commas
+ $reg = preg_replace("/$el/", '(,\\0)', $reg);
+
+ // remove commas when they were not solicited
+ $reg = preg_replace("/([^,(|]\(+),/", '\\1', $reg);
+
+ // remove all non-paranthetical commas: they are handled by first regex
+ $reg = preg_replace("/,\(/", '(', $reg);
+
+ $this->_pcre_regex = $reg;
+ }
+ public function validateChildren($tokens_of_children, $config, $context) {
+ $list_of_children = '';
+ $nesting = 0; // depth into the nest
+ foreach ($tokens_of_children as $token) {
+ if (!empty($token->is_whitespace)) continue;
+
+ $is_child = ($nesting == 0); // direct
+
+ if ($token instanceof HTMLPurifier_Token_Start) {
+ $nesting++;
+ } elseif ($token instanceof HTMLPurifier_Token_End) {
+ $nesting--;
+ }
+
+ if ($is_child) {
+ $list_of_children .= $token->name . ',';
+ }
+ }
+ // add leading comma to deal with stray comma declarations
+ $list_of_children = ',' . rtrim($list_of_children, ',');
+ $okay =
+ preg_match(
+ '/^,?'.$this->_pcre_regex.'$/',
+ $list_of_children
+ );
+
+ return (bool) $okay;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Definition that disallows all elements.
+ * @warning validateChildren() in this class is actually never called, because
+ * empty elements are corrected in HTMLPurifier_Strategy_MakeWellFormed
+ * before child definitions are parsed in earnest by
+ * HTMLPurifier_Strategy_FixNesting.
+ */
+class HTMLPurifier_ChildDef_Empty extends HTMLPurifier_ChildDef
+{
+ public $allow_empty = true;
+ public $type = 'empty';
+ public function __construct() {}
+ public function validateChildren($tokens_of_children, $config, $context) {
+ return array();
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Definition that allows a set of elements, and allows no children.
+ * @note This is a hack to reuse code from HTMLPurifier_ChildDef_Required,
+ * really, one shouldn't inherit from the other. Only altered behavior
+ * is to overload a returned false with an array. Thus, it will never
+ * return false.
+ */
+class HTMLPurifier_ChildDef_Optional extends HTMLPurifier_ChildDef_Required
+{
+ public $allow_empty = true;
+ public $type = 'optional';
+ public function validateChildren($tokens_of_children, $config, $context) {
+ $result = parent::validateChildren($tokens_of_children, $config, $context);
+ // we assume that $tokens_of_children is not modified
+ if ($result === false) {
+ if (empty($tokens_of_children)) return true;
+ elseif ($this->whitespace) return $tokens_of_children;
+ else return array();
+ }
+ return $result;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Definition that allows a set of elements, but disallows empty children.
+ */
+class HTMLPurifier_ChildDef_Required extends HTMLPurifier_ChildDef
+{
+ /**
+ * Lookup table of allowed elements.
+ * @public
+ */
+ public $elements = array();
+ /**
+ * Whether or not the last passed node was all whitespace.
+ */
+ protected $whitespace = false;
+ /**
+ * @param $elements List of allowed element names (lowercase).
+ */
+ public function __construct($elements) {
+ if (is_string($elements)) {
+ $elements = str_replace(' ', '', $elements);
+ $elements = explode('|', $elements);
+ }
+ $keys = array_keys($elements);
+ if ($keys == array_keys($keys)) {
+ $elements = array_flip($elements);
+ foreach ($elements as $i => $x) {
+ $elements[$i] = true;
+ if (empty($i)) unset($elements[$i]); // remove blank
+ }
+ }
+ $this->elements = $elements;
+ }
+ public $allow_empty = false;
+ public $type = 'required';
+ public function validateChildren($tokens_of_children, $config, $context) {
+ // Flag for subclasses
+ $this->whitespace = false;
+
+ // if there are no tokens, delete parent node
+ if (empty($tokens_of_children)) return false;
+
+ // the new set of children
+ $result = array();
+
+ // current depth into the nest
+ $nesting = 0;
+
+ // whether or not we're deleting a node
+ $is_deleting = false;
+
+ // whether or not parsed character data is allowed
+ // this controls whether or not we silently drop a tag
+ // or generate escaped HTML from it
+ $pcdata_allowed = isset($this->elements['#PCDATA']);
+
+ // a little sanity check to make sure it's not ALL whitespace
+ $all_whitespace = true;
+
+ // some configuration
+ $escape_invalid_children = $config->get('Core.EscapeInvalidChildren');
+
+ // generator
+ $gen = new HTMLPurifier_Generator($config, $context);
+
+ foreach ($tokens_of_children as $token) {
+ if (!empty($token->is_whitespace)) {
+ $result[] = $token;
+ continue;
+ }
+ $all_whitespace = false; // phew, we're not talking about whitespace
+
+ $is_child = ($nesting == 0);
+
+ if ($token instanceof HTMLPurifier_Token_Start) {
+ $nesting++;
+ } elseif ($token instanceof HTMLPurifier_Token_End) {
+ $nesting--;
+ }
+
+ if ($is_child) {
+ $is_deleting = false;
+ if (!isset($this->elements[$token->name])) {
+ $is_deleting = true;
+ if ($pcdata_allowed && $token instanceof HTMLPurifier_Token_Text) {
+ $result[] = $token;
+ } elseif ($pcdata_allowed && $escape_invalid_children) {
+ $result[] = new HTMLPurifier_Token_Text(
+ $gen->generateFromToken($token)
+ );
+ }
+ continue;
+ }
+ }
+ if (!$is_deleting || ($pcdata_allowed && $token instanceof HTMLPurifier_Token_Text)) {
+ $result[] = $token;
+ } elseif ($pcdata_allowed && $escape_invalid_children) {
+ $result[] =
+ new HTMLPurifier_Token_Text(
+ $gen->generateFromToken($token)
+ );
+ } else {
+ // drop silently
+ }
+ }
+ if (empty($result)) return false;
+ if ($all_whitespace) {
+ $this->whitespace = true;
+ return false;
+ }
+ if ($tokens_of_children == $result) return true;
+ return $result;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Takes the contents of blockquote when in strict and reformats for validation.
+ */
+class HTMLPurifier_ChildDef_StrictBlockquote extends HTMLPurifier_ChildDef_Required
+{
+ protected $real_elements;
+ protected $fake_elements;
+ public $allow_empty = true;
+ public $type = 'strictblockquote';
+ protected $init = false;
+
+ /**
+ * @note We don't want MakeWellFormed to auto-close inline elements since
+ * they might be allowed.
+ */
+ public function getAllowedElements($config) {
+ $this->init($config);
+ return $this->fake_elements;
+ }
+
+ public function validateChildren($tokens_of_children, $config, $context) {
+
+ $this->init($config);
+
+ // trick the parent class into thinking it allows more
+ $this->elements = $this->fake_elements;
+ $result = parent::validateChildren($tokens_of_children, $config, $context);
+ $this->elements = $this->real_elements;
+
+ if ($result === false) return array();
+ if ($result === true) $result = $tokens_of_children;
+
+ $def = $config->getHTMLDefinition();
+ $block_wrap_start = new HTMLPurifier_Token_Start($def->info_block_wrapper);
+ $block_wrap_end = new HTMLPurifier_Token_End( $def->info_block_wrapper);
+ $is_inline = false;
+ $depth = 0;
+ $ret = array();
+
+ // assuming that there are no comment tokens
+ foreach ($result as $i => $token) {
+ $token = $result[$i];
+ // ifs are nested for readability
+ if (!$is_inline) {
+ if (!$depth) {
+ if (
+ ($token instanceof HTMLPurifier_Token_Text && !$token->is_whitespace) ||
+ (!$token instanceof HTMLPurifier_Token_Text && !isset($this->elements[$token->name]))
+ ) {
+ $is_inline = true;
+ $ret[] = $block_wrap_start;
+ }
+ }
+ } else {
+ if (!$depth) {
+ // starting tokens have been inline text / empty
+ if ($token instanceof HTMLPurifier_Token_Start || $token instanceof HTMLPurifier_Token_Empty) {
+ if (isset($this->elements[$token->name])) {
+ // ended
+ $ret[] = $block_wrap_end;
+ $is_inline = false;
+ }
+ }
+ }
+ }
+ $ret[] = $token;
+ if ($token instanceof HTMLPurifier_Token_Start) $depth++;
+ if ($token instanceof HTMLPurifier_Token_End) $depth--;
+ }
+ if ($is_inline) $ret[] = $block_wrap_end;
+ return $ret;
+ }
+
+ private function init($config) {
+ if (!$this->init) {
+ $def = $config->getHTMLDefinition();
+ // allow all inline elements
+ $this->real_elements = $this->elements;
+ $this->fake_elements = $def->info_content_sets['Flow'];
+ $this->fake_elements['#PCDATA'] = true;
+ $this->init = true;
+ }
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Definition for tables
+ */
+class HTMLPurifier_ChildDef_Table extends HTMLPurifier_ChildDef
+{
+ public $allow_empty = false;
+ public $type = 'table';
+ public $elements = array('tr' => true, 'tbody' => true, 'thead' => true,
+ 'tfoot' => true, 'caption' => true, 'colgroup' => true, 'col' => true);
+ public function __construct() {}
+ public function validateChildren($tokens_of_children, $config, $context) {
+ if (empty($tokens_of_children)) return false;
+
+ // this ensures that the loop gets run one last time before closing
+ // up. It's a little bit of a hack, but it works! Just make sure you
+ // get rid of the token later.
+ $tokens_of_children[] = false;
+
+ // only one of these elements is allowed in a table
+ $caption = false;
+ $thead = false;
+ $tfoot = false;
+
+ // as many of these as you want
+ $cols = array();
+ $content = array();
+
+ $nesting = 0; // current depth so we can determine nodes
+ $is_collecting = false; // are we globbing together tokens to package
+ // into one of the collectors?
+ $collection = array(); // collected nodes
+ $tag_index = 0; // the first node might be whitespace,
+ // so this tells us where the start tag is
+
+ foreach ($tokens_of_children as $token) {
+ $is_child = ($nesting == 0);
+
+ if ($token === false) {
+ // terminating sequence started
+ } elseif ($token instanceof HTMLPurifier_Token_Start) {
+ $nesting++;
+ } elseif ($token instanceof HTMLPurifier_Token_End) {
+ $nesting--;
+ }
+
+ // handle node collection
+ if ($is_collecting) {
+ if ($is_child) {
+ // okay, let's stash the tokens away
+ // first token tells us the type of the collection
+ switch ($collection[$tag_index]->name) {
+ case 'tr':
+ case 'tbody':
+ $content[] = $collection;
+ break;
+ case 'caption':
+ if ($caption !== false) break;
+ $caption = $collection;
+ break;
+ case 'thead':
+ case 'tfoot':
+ // access the appropriate variable, $thead or $tfoot
+ $var = $collection[$tag_index]->name;
+ if ($$var === false) {
+ $$var = $collection;
+ } else {
+ // transmutate the first and less entries into
+ // tbody tags, and then put into content
+ $collection[$tag_index]->name = 'tbody';
+ $collection[count($collection)-1]->name = 'tbody';
+ $content[] = $collection;
+ }
+ break;
+ case 'colgroup':
+ $cols[] = $collection;
+ break;
+ }
+ $collection = array();
+ $is_collecting = false;
+ $tag_index = 0;
+ } else {
+ // add the node to the collection
+ $collection[] = $token;
+ }
+ }
+
+ // terminate
+ if ($token === false) break;
+
+ if ($is_child) {
+ // determine what we're dealing with
+ if ($token->name == 'col') {
+ // the only empty tag in the possie, we can handle it
+ // immediately
+ $cols[] = array_merge($collection, array($token));
+ $collection = array();
+ $tag_index = 0;
+ continue;
+ }
+ switch($token->name) {
+ case 'caption':
+ case 'colgroup':
+ case 'thead':
+ case 'tfoot':
+ case 'tbody':
+ case 'tr':
+ $is_collecting = true;
+ $collection[] = $token;
+ continue;
+ default:
+ if (!empty($token->is_whitespace)) {
+ $collection[] = $token;
+ $tag_index++;
+ }
+ continue;
+ }
+ }
+ }
+
+ if (empty($content)) return false;
+
+ $ret = array();
+ if ($caption !== false) $ret = array_merge($ret, $caption);
+ if ($cols !== false) foreach ($cols as $token_array) $ret = array_merge($ret, $token_array);
+ if ($thead !== false) $ret = array_merge($ret, $thead);
+ if ($tfoot !== false) $ret = array_merge($ret, $tfoot);
+ foreach ($content as $token_array) $ret = array_merge($ret, $token_array);
+ if (!empty($collection) && $is_collecting == false){
+ // grab the trailing space
+ $ret = array_merge($ret, $collection);
+ }
+
+ array_pop($tokens_of_children); // remove phantom token
+
+ return ($ret === $tokens_of_children) ? true : $ret;
+
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Configuration object that triggers customizable behavior.
+ *
+ * @warning This class is strongly defined: that means that the class
+ * will fail if an undefined directive is retrieved or set.
+ *
+ * @note Many classes that could (although many times don't) use the
+ * configuration object make it a mandatory parameter. This is
+ * because a configuration object should always be forwarded,
+ * otherwise, you run the risk of missing a parameter and then
+ * being stumped when a configuration directive doesn't work.
+ *
+ * @todo Reconsider some of the public member variables
+ */
+class HTMLPurifier_Config
+{
+
+ /**
+ * HTML Purifier's version
+ */
+ public $version = '4.0.0';
+
+ /**
+ * Bool indicator whether or not to automatically finalize
+ * the object if a read operation is done
+ */
+ public $autoFinalize = true;
+
+ // protected member variables
+
+ /**
+ * Namespace indexed array of serials for specific namespaces (see
+ * getSerial() for more info).
+ */
+ protected $serials = array();
+
+ /**
+ * Serial for entire configuration object
+ */
+ protected $serial;
+
+ /**
+ * Parser for variables
+ */
+ protected $parser;
+
+ /**
+ * Reference HTMLPurifier_ConfigSchema for value checking
+ * @note This is public for introspective purposes. Please don't
+ * abuse!
+ */
+ public $def;
+
+ /**
+ * Indexed array of definitions
+ */
+ protected $definitions;
+
+ /**
+ * Bool indicator whether or not config is finalized
+ */
+ protected $finalized = false;
+
+ /**
+ * Property list containing configuration directives.
+ */
+ protected $plist;
+
+ /**
+ * Whether or not a set is taking place due to an
+ * alias lookup.
+ */
+ private $aliasMode;
+
+ /**
+ * Set to false if you do not want line and file numbers in errors
+ * (useful when unit testing)
+ */
+ public $chatty = true;
+
+ /**
+ * Current lock; only gets to this namespace are allowed.
+ */
+ private $lock;
+
+ /**
+ * @param $definition HTMLPurifier_ConfigSchema that defines what directives
+ * are allowed.
+ */
+ public function __construct($definition, $parent = null) {
+ $parent = $parent ? $parent : $definition->defaultPlist;
+ $this->plist = new HTMLPurifier_PropertyList($parent);
+ $this->def = $definition; // keep a copy around for checking
+ $this->parser = new HTMLPurifier_VarParser_Flexible();
+ }
+
+ /**
+ * Convenience constructor that creates a config object based on a mixed var
+ * @param mixed $config Variable that defines the state of the config
+ * object. Can be: a HTMLPurifier_Config() object,
+ * an array of directives based on loadArray(),
+ * or a string filename of an ini file.
+ * @param HTMLPurifier_ConfigSchema Schema object
+ * @return Configured HTMLPurifier_Config object
+ */
+ public static function create($config, $schema = null) {
+ if ($config instanceof HTMLPurifier_Config) {
+ // pass-through
+ return $config;
+ }
+ if (!$schema) {
+ $ret = HTMLPurifier_Config::createDefault();
+ } else {
+ $ret = new HTMLPurifier_Config($schema);
+ }
+ if (is_string($config)) $ret->loadIni($config);
+ elseif (is_array($config)) $ret->loadArray($config);
+ return $ret;
+ }
+
+ /**
+ * Creates a new config object that inherits from a previous one.
+ * @param HTMLPurifier_Config $config Configuration object to inherit
+ * from.
+ * @return HTMLPurifier_Config object with $config as its parent.
+ */
+ public static function inherit(HTMLPurifier_Config $config) {
+ return new HTMLPurifier_Config($config->def, $config->plist);
+ }
+
+ /**
+ * Convenience constructor that creates a default configuration object.
+ * @return Default HTMLPurifier_Config object.
+ */
+ public static function createDefault() {
+ $definition = HTMLPurifier_ConfigSchema::instance();
+ $config = new HTMLPurifier_Config($definition);
+ return $config;
+ }
+
+ /**
+ * Retreives a value from the configuration.
+ * @param $key String key
+ */
+ public function get($key, $a = null) {
+ if ($a !== null) {
+ $this->triggerError("Using deprecated API: use \$config->get('$key.$a') instead", E_USER_WARNING);
+ $key = "$key.$a";
+ }
+ if (!$this->finalized) $this->autoFinalize();
+ if (!isset($this->def->info[$key])) {
+ // can't add % due to SimpleTest bug
+ $this->triggerError('Cannot retrieve value of undefined directive ' . htmlspecialchars($key),
+ E_USER_WARNING);
+ return;
+ }
+ if (isset($this->def->info[$key]->isAlias)) {
+ $d = $this->def->info[$key];
+ $this->triggerError('Cannot get value from aliased directive, use real name ' . $d->key,
+ E_USER_ERROR);
+ return;
+ }
+ if ($this->lock) {
+ list($ns) = explode('.', $key);
+ if ($ns !== $this->lock) {
+ $this->triggerError('Cannot get value of namespace ' . $ns . ' when lock for ' . $this->lock . ' is active, this probably indicates a Definition setup method is accessing directives that are not within its namespace', E_USER_ERROR);
+ return;
+ }
+ }
+ return $this->plist->get($key);
+ }
+
+ /**
+ * Retreives an array of directives to values from a given namespace
+ * @param $namespace String namespace
+ */
+ public function getBatch($namespace) {
+ if (!$this->finalized) $this->autoFinalize();
+ $full = $this->getAll();
+ if (!isset($full[$namespace])) {
+ $this->triggerError('Cannot retrieve undefined namespace ' . htmlspecialchars($namespace),
+ E_USER_WARNING);
+ return;
+ }
+ return $full[$namespace];
+ }
+
+ /**
+ * Returns a md5 signature of a segment of the configuration object
+ * that uniquely identifies that particular configuration
+ * @note Revision is handled specially and is removed from the batch
+ * before processing!
+ * @param $namespace Namespace to get serial for
+ */
+ public function getBatchSerial($namespace) {
+ if (empty($this->serials[$namespace])) {
+ $batch = $this->getBatch($namespace);
+ unset($batch['DefinitionRev']);
+ $this->serials[$namespace] = md5(serialize($batch));
+ }
+ return $this->serials[$namespace];
+ }
+
+ /**
+ * Returns a md5 signature for the entire configuration object
+ * that uniquely identifies that particular configuration
+ */
+ public function getSerial() {
+ if (empty($this->serial)) {
+ $this->serial = md5(serialize($this->getAll()));
+ }
+ return $this->serial;
+ }
+
+ /**
+ * Retrieves all directives, organized by namespace
+ * @warning This is a pretty inefficient function, avoid if you can
+ */
+ public function getAll() {
+ if (!$this->finalized) $this->autoFinalize();
+ $ret = array();
+ foreach ($this->plist->squash() as $name => $value) {
+ list($ns, $key) = explode('.', $name, 2);
+ $ret[$ns][$key] = $value;
+ }
+ return $ret;
+ }
+
+ /**
+ * Sets a value to configuration.
+ * @param $key String key
+ * @param $value Mixed value
+ */
+ public function set($key, $value, $a = null) {
+ if (strpos($key, '.') === false) {
+ $namespace = $key;
+ $directive = $value;
+ $value = $a;
+ $key = "$key.$directive";
+ $this->triggerError("Using deprecated API: use \$config->set('$key', ...) instead", E_USER_NOTICE);
+ } else {
+ list($namespace) = explode('.', $key);
+ }
+ if ($this->isFinalized('Cannot set directive after finalization')) return;
+ if (!isset($this->def->info[$key])) {
+ $this->triggerError('Cannot set undefined directive ' . htmlspecialchars($key) . ' to value',
+ E_USER_WARNING);
+ return;
+ }
+ $def = $this->def->info[$key];
+
+ if (isset($def->isAlias)) {
+ if ($this->aliasMode) {
+ $this->triggerError('Double-aliases not allowed, please fix '.
+ 'ConfigSchema bug with' . $key, E_USER_ERROR);
+ return;
+ }
+ $this->aliasMode = true;
+ $this->set($def->key, $value);
+ $this->aliasMode = false;
+ $this->triggerError("$key is an alias, preferred directive name is {$def->key}", E_USER_NOTICE);
+ return;
+ }
+
+ // Raw type might be negative when using the fully optimized form
+ // of stdclass, which indicates allow_null == true
+ $rtype = is_int($def) ? $def : $def->type;
+ if ($rtype < 0) {
+ $type = -$rtype;
+ $allow_null = true;
+ } else {
+ $type = $rtype;
+ $allow_null = isset($def->allow_null);
+ }
+
+ try {
+ $value = $this->parser->parse($value, $type, $allow_null);
+ } catch (HTMLPurifier_VarParserException $e) {
+ $this->triggerError('Value for ' . $key . ' is of invalid type, should be ' . HTMLPurifier_VarParser::getTypeName($type), E_USER_WARNING);
+ return;
+ }
+ if (is_string($value) && is_object($def)) {
+ // resolve value alias if defined
+ if (isset($def->aliases[$value])) {
+ $value = $def->aliases[$value];
+ }
+ // check to see if the value is allowed
+ if (isset($def->allowed) && !isset($def->allowed[$value])) {
+ $this->triggerError('Value not supported, valid values are: ' .
+ $this->_listify($def->allowed), E_USER_WARNING);
+ return;
+ }
+ }
+ $this->plist->set($key, $value);
+
+ // reset definitions if the directives they depend on changed
+ // this is a very costly process, so it's discouraged
+ // with finalization
+ if ($namespace == 'HTML' || $namespace == 'CSS' || $namespace == 'URI') {
+ $this->definitions[$namespace] = null;
+ }
+
+ $this->serials[$namespace] = false;
+ }
+
+ /**
+ * Convenience function for error reporting
+ */
+ private function _listify($lookup) {
+ $list = array();
+ foreach ($lookup as $name => $b) $list[] = $name;
+ return implode(', ', $list);
+ }
+
+ /**
+ * Retrieves object reference to the HTML definition.
+ * @param $raw Return a copy that has not been setup yet. Must be
+ * called before it's been setup, otherwise won't work.
+ */
+ public function getHTMLDefinition($raw = false) {
+ return $this->getDefinition('HTML', $raw);
+ }
+
+ /**
+ * Retrieves object reference to the CSS definition
+ * @param $raw Return a copy that has not been setup yet. Must be
+ * called before it's been setup, otherwise won't work.
+ */
+ public function getCSSDefinition($raw = false) {
+ return $this->getDefinition('CSS', $raw);
+ }
+
+ /**
+ * Retrieves a definition
+ * @param $type Type of definition: HTML, CSS, etc
+ * @param $raw Whether or not definition should be returned raw
+ */
+ public function getDefinition($type, $raw = false) {
+ if (!$this->finalized) $this->autoFinalize();
+ // temporarily suspend locks, so we can handle recursive definition calls
+ $lock = $this->lock;
+ $this->lock = null;
+ $factory = HTMLPurifier_DefinitionCacheFactory::instance();
+ $cache = $factory->create($type, $this);
+ $this->lock = $lock;
+ if (!$raw) {
+ // see if we can quickly supply a definition
+ if (!empty($this->definitions[$type])) {
+ if (!$this->definitions[$type]->setup) {
+ $this->definitions[$type]->setup($this);
+ $cache->set($this->definitions[$type], $this);
+ }
+ return $this->definitions[$type];
+ }
+ // memory check missed, try cache
+ $this->definitions[$type] = $cache->get($this);
+ if ($this->definitions[$type]) {
+ // definition in cache, return it
+ return $this->definitions[$type];
+ }
+ } elseif (
+ !empty($this->definitions[$type]) &&
+ !$this->definitions[$type]->setup
+ ) {
+ // raw requested, raw in memory, quick return
+ return $this->definitions[$type];
+ }
+ // quick checks failed, let's create the object
+ if ($type == 'HTML') {
+ $this->definitions[$type] = new HTMLPurifier_HTMLDefinition();
+ } elseif ($type == 'CSS') {
+ $this->definitions[$type] = new HTMLPurifier_CSSDefinition();
+ } elseif ($type == 'URI') {
+ $this->definitions[$type] = new HTMLPurifier_URIDefinition();
+ } else {
+ throw new HTMLPurifier_Exception("Definition of $type type not supported");
+ }
+ // quick abort if raw
+ if ($raw) {
+ if (is_null($this->get($type . '.DefinitionID'))) {
+ // fatally error out if definition ID not set
+ throw new HTMLPurifier_Exception("Cannot retrieve raw version without specifying %$type.DefinitionID");
+ }
+ return $this->definitions[$type];
+ }
+ // set it up
+ $this->lock = $type;
+ $this->definitions[$type]->setup($this);
+ $this->lock = null;
+ // save in cache
+ $cache->set($this->definitions[$type], $this);
+ return $this->definitions[$type];
+ }
+
+ /**
+ * Loads configuration values from an array with the following structure:
+ * Namespace.Directive => Value
+ * @param $config_array Configuration associative array
+ */
+ public function loadArray($config_array) {
+ if ($this->isFinalized('Cannot load directives after finalization')) return;
+ foreach ($config_array as $key => $value) {
+ $key = str_replace('_', '.', $key);
+ if (strpos($key, '.') !== false) {
+ $this->set($key, $value);
+ } else {
+ $namespace = $key;
+ $namespace_values = $value;
+ foreach ($namespace_values as $directive => $value) {
+ $this->set($namespace .'.'. $directive, $value);
+ }
+ }
+ }
+ }
+
+ /**
+ * Returns a list of array(namespace, directive) for all directives
+ * that are allowed in a web-form context as per an allowed
+ * namespaces/directives list.
+ * @param $allowed List of allowed namespaces/directives
+ */
+ public static function getAllowedDirectivesForForm($allowed, $schema = null) {
+ if (!$schema) {
+ $schema = HTMLPurifier_ConfigSchema::instance();
+ }
+ if ($allowed !== true) {
+ if (is_string($allowed)) $allowed = array($allowed);
+ $allowed_ns = array();
+ $allowed_directives = array();
+ $blacklisted_directives = array();
+ foreach ($allowed as $ns_or_directive) {
+ if (strpos($ns_or_directive, '.') !== false) {
+ // directive
+ if ($ns_or_directive[0] == '-') {
+ $blacklisted_directives[substr($ns_or_directive, 1)] = true;
+ } else {
+ $allowed_directives[$ns_or_directive] = true;
+ }
+ } else {
+ // namespace
+ $allowed_ns[$ns_or_directive] = true;
+ }
+ }
+ }
+ $ret = array();
+ foreach ($schema->info as $key => $def) {
+ list($ns, $directive) = explode('.', $key, 2);
+ if ($allowed !== true) {
+ if (isset($blacklisted_directives["$ns.$directive"])) continue;
+ if (!isset($allowed_directives["$ns.$directive"]) && !isset($allowed_ns[$ns])) continue;
+ }
+ if (isset($def->isAlias)) continue;
+ if ($directive == 'DefinitionID' || $directive == 'DefinitionRev') continue;
+ $ret[] = array($ns, $directive);
+ }
+ return $ret;
+ }
+
+ /**
+ * Loads configuration values from $_GET/$_POST that were posted
+ * via ConfigForm
+ * @param $array $_GET or $_POST array to import
+ * @param $index Index/name that the config variables are in
+ * @param $allowed List of allowed namespaces/directives
+ * @param $mq_fix Boolean whether or not to enable magic quotes fix
+ * @param $schema Instance of HTMLPurifier_ConfigSchema to use, if not global copy
+ */
+ public static function loadArrayFromForm($array, $index = false, $allowed = true, $mq_fix = true, $schema = null) {
+ $ret = HTMLPurifier_Config::prepareArrayFromForm($array, $index, $allowed, $mq_fix, $schema);
+ $config = HTMLPurifier_Config::create($ret, $schema);
+ return $config;
+ }
+
+ /**
+ * Merges in configuration values from $_GET/$_POST to object. NOT STATIC.
+ * @note Same parameters as loadArrayFromForm
+ */
+ public function mergeArrayFromForm($array, $index = false, $allowed = true, $mq_fix = true) {
+ $ret = HTMLPurifier_Config::prepareArrayFromForm($array, $index, $allowed, $mq_fix, $this->def);
+ $this->loadArray($ret);
+ }
+
+ /**
+ * Prepares an array from a form into something usable for the more
+ * strict parts of HTMLPurifier_Config
+ */
+ public static function prepareArrayFromForm($array, $index = false, $allowed = true, $mq_fix = true, $schema = null) {
+ if ($index !== false) $array = (isset($array[$index]) && is_array($array[$index])) ? $array[$index] : array();
+ $mq = $mq_fix && function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc();
+
+ $allowed = HTMLPurifier_Config::getAllowedDirectivesForForm($allowed, $schema);
+ $ret = array();
+ foreach ($allowed as $key) {
+ list($ns, $directive) = $key;
+ $skey = "$ns.$directive";
+ if (!empty($array["Null_$skey"])) {
+ $ret[$ns][$directive] = null;
+ continue;
+ }
+ if (!isset($array[$skey])) continue;
+ $value = $mq ? stripslashes($array[$skey]) : $array[$skey];
+ $ret[$ns][$directive] = $value;
+ }
+ return $ret;
+ }
+
+ /**
+ * Loads configuration values from an ini file
+ * @param $filename Name of ini file
+ */
+ public function loadIni($filename) {
+ if ($this->isFinalized('Cannot load directives after finalization')) return;
+ $array = parse_ini_file($filename, true);
+ $this->loadArray($array);
+ }
+
+ /**
+ * Checks whether or not the configuration object is finalized.
+ * @param $error String error message, or false for no error
+ */
+ public function isFinalized($error = false) {
+ if ($this->finalized && $error) {
+ $this->triggerError($error, E_USER_ERROR);
+ }
+ return $this->finalized;
+ }
+
+ /**
+ * Finalizes configuration only if auto finalize is on and not
+ * already finalized
+ */
+ public function autoFinalize() {
+ if ($this->autoFinalize) {
+ $this->finalize();
+ } else {
+ $this->plist->squash(true);
+ }
+ }
+
+ /**
+ * Finalizes a configuration object, prohibiting further change
+ */
+ public function finalize() {
+ $this->finalized = true;
+ unset($this->parser);
+ }
+
+ /**
+ * Produces a nicely formatted error message by supplying the
+ * stack frame information from two levels up and OUTSIDE of
+ * HTMLPurifier_Config.
+ */
+ protected function triggerError($msg, $no) {
+ // determine previous stack frame
+ $backtrace = debug_backtrace();
+ if ($this->chatty && isset($backtrace[1])) {
+ $frame = $backtrace[1];
+ $extra = " on line {$frame['line']} in file {$frame['file']}";
+ } else {
+ $extra = '';
+ }
+ trigger_error($msg . $extra, $no);
+ }
+
+ /**
+ * Returns a serialized form of the configuration object that can
+ * be reconstituted.
+ */
+ public function serialize() {
+ $this->getDefinition('HTML');
+ $this->getDefinition('CSS');
+ $this->getDefinition('URI');
+ return serialize($this);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Configuration definition, defines directives and their defaults.
+ */
+class HTMLPurifier_ConfigSchema {
+
+ /**
+ * Defaults of the directives and namespaces.
+ * @note This shares the exact same structure as HTMLPurifier_Config::$conf
+ */
+ public $defaults = array();
+
+ /**
+ * The default property list. Do not edit this property list.
+ */
+ public $defaultPlist;
+
+ /**
+ * Definition of the directives. The structure of this is:
+ *
+ * array(
+ * 'Namespace' => array(
+ * 'Directive' => new stdclass(),
+ * )
+ * )
+ *
+ * The stdclass may have the following properties:
+ *
+ * - If isAlias isn't set:
+ * - type: Integer type of directive, see HTMLPurifier_VarParser for definitions
+ * - allow_null: If set, this directive allows null values
+ * - aliases: If set, an associative array of value aliases to real values
+ * - allowed: If set, a lookup array of allowed (string) values
+ * - If isAlias is set:
+ * - namespace: Namespace this directive aliases to
+ * - name: Directive name this directive aliases to
+ *
+ * In certain degenerate cases, stdclass will actually be an integer. In
+ * that case, the value is equivalent to an stdclass with the type
+ * property set to the integer. If the integer is negative, type is
+ * equal to the absolute value of integer, and allow_null is true.
+ *
+ * This class is friendly with HTMLPurifier_Config. If you need introspection
+ * about the schema, you're better of using the ConfigSchema_Interchange,
+ * which uses more memory but has much richer information.
+ */
+ public $info = array();
+
+ /**
+ * Application-wide singleton
+ */
+ static protected $singleton;
+
+ public function __construct() {
+ $this->defaultPlist = new HTMLPurifier_PropertyList();
+ }
+
+ /**
+ * Unserializes the default ConfigSchema.
+ */
+ public static function makeFromSerial() {
+ return unserialize(file_get_contents(HTMLPURIFIER_PREFIX . '/HTMLPurifier/ConfigSchema/schema.ser'));
+ }
+
+ /**
+ * Retrieves an instance of the application-wide configuration definition.
+ */
+ public static function instance($prototype = null) {
+ if ($prototype !== null) {
+ HTMLPurifier_ConfigSchema::$singleton = $prototype;
+ } elseif (HTMLPurifier_ConfigSchema::$singleton === null || $prototype === true) {
+ HTMLPurifier_ConfigSchema::$singleton = HTMLPurifier_ConfigSchema::makeFromSerial();
+ }
+ return HTMLPurifier_ConfigSchema::$singleton;
+ }
+
+ /**
+ * Defines a directive for configuration
+ * @warning Will fail of directive's namespace is defined.
+ * @warning This method's signature is slightly different from the legacy
+ * define() static method! Beware!
+ * @param $namespace Namespace the directive is in
+ * @param $name Key of directive
+ * @param $default Default value of directive
+ * @param $type Allowed type of the directive. See
+ * HTMLPurifier_DirectiveDef::$type for allowed values
+ * @param $allow_null Whether or not to allow null values
+ */
+ public function add($key, $default, $type, $allow_null) {
+ $obj = new stdclass();
+ $obj->type = is_int($type) ? $type : HTMLPurifier_VarParser::$types[$type];
+ if ($allow_null) $obj->allow_null = true;
+ $this->info[$key] = $obj;
+ $this->defaults[$key] = $default;
+ $this->defaultPlist->set($key, $default);
+ }
+
+ /**
+ * Defines a directive value alias.
+ *
+ * Directive value aliases are convenient for developers because it lets
+ * them set a directive to several values and get the same result.
+ * @param $namespace Directive's namespace
+ * @param $name Name of Directive
+ * @param $aliases Hash of aliased values to the real alias
+ */
+ public function addValueAliases($key, $aliases) {
+ if (!isset($this->info[$key]->aliases)) {
+ $this->info[$key]->aliases = array();
+ }
+ foreach ($aliases as $alias => $real) {
+ $this->info[$key]->aliases[$alias] = $real;
+ }
+ }
+
+ /**
+ * Defines a set of allowed values for a directive.
+ * @warning This is slightly different from the corresponding static
+ * method definition.
+ * @param $namespace Namespace of directive
+ * @param $name Name of directive
+ * @param $allowed Lookup array of allowed values
+ */
+ public function addAllowedValues($key, $allowed) {
+ $this->info[$key]->allowed = $allowed;
+ }
+
+ /**
+ * Defines a directive alias for backwards compatibility
+ * @param $namespace
+ * @param $name Directive that will be aliased
+ * @param $new_namespace
+ * @param $new_name Directive that the alias will be to
+ */
+ public function addAlias($key, $new_key) {
+ $obj = new stdclass;
+ $obj->key = $new_key;
+ $obj->isAlias = true;
+ $this->info[$key] = $obj;
+ }
+
+ /**
+ * Replaces any stdclass that only has the type property with type integer.
+ */
+ public function postProcess() {
+ foreach ($this->info as $key => $v) {
+ if (count((array) $v) == 1) {
+ $this->info[$key] = $v->type;
+ } elseif (count((array) $v) == 2 && isset($v->allow_null)) {
+ $this->info[$key] = -$v->type;
+ }
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Converts HTMLPurifier_ConfigSchema_Interchange to our runtime
+ * representation used to perform checks on user configuration.
+ */
+class HTMLPurifier_ConfigSchema_Builder_ConfigSchema
+{
+
+ public function build($interchange) {
+ $schema = new HTMLPurifier_ConfigSchema();
+ foreach ($interchange->directives as $d) {
+ $schema->add(
+ $d->id->key,
+ $d->default,
+ $d->type,
+ $d->typeAllowsNull
+ );
+ if ($d->allowed !== null) {
+ $schema->addAllowedValues(
+ $d->id->key,
+ $d->allowed
+ );
+ }
+ foreach ($d->aliases as $alias) {
+ $schema->addAlias(
+ $alias->key,
+ $d->id->key
+ );
+ }
+ if ($d->valueAliases !== null) {
+ $schema->addValueAliases(
+ $d->id->key,
+ $d->valueAliases
+ );
+ }
+ }
+ $schema->postProcess();
+ return $schema;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Converts HTMLPurifier_ConfigSchema_Interchange to an XML format,
+ * which can be further processed to generate documentation.
+ */
+class HTMLPurifier_ConfigSchema_Builder_Xml extends XMLWriter
+{
+
+ protected $interchange;
+ private $namespace;
+
+ protected function writeHTMLDiv($html) {
+ $this->startElement('div');
+
+ $purifier = HTMLPurifier::getInstance();
+ $html = $purifier->purify($html);
+ $this->writeAttribute('xmlns', 'http://www.w3.org/1999/xhtml');
+ $this->writeRaw($html);
+
+ $this->endElement(); // div
+ }
+
+ protected function export($var) {
+ if ($var === array()) return 'array()';
+ return var_export($var, true);
+ }
+
+ public function build($interchange) {
+ // global access, only use as last resort
+ $this->interchange = $interchange;
+
+ $this->setIndent(true);
+ $this->startDocument('1.0', 'UTF-8');
+ $this->startElement('configdoc');
+ $this->writeElement('title', $interchange->name);
+
+ foreach ($interchange->directives as $directive) {
+ $this->buildDirective($directive);
+ }
+
+ if ($this->namespace) $this->endElement(); // namespace
+
+ $this->endElement(); // configdoc
+ $this->flush();
+ }
+
+ public function buildDirective($directive) {
+
+ // Kludge, although I suppose having a notion of a "root namespace"
+ // certainly makes things look nicer when documentation is built.
+ // Depends on things being sorted.
+ if (!$this->namespace || $this->namespace !== $directive->id->getRootNamespace()) {
+ if ($this->namespace) $this->endElement(); // namespace
+ $this->namespace = $directive->id->getRootNamespace();
+ $this->startElement('namespace');
+ $this->writeAttribute('id', $this->namespace);
+ $this->writeElement('name', $this->namespace);
+ }
+
+ $this->startElement('directive');
+ $this->writeAttribute('id', $directive->id->toString());
+
+ $this->writeElement('name', $directive->id->getDirective());
+
+ $this->startElement('aliases');
+ foreach ($directive->aliases as $alias) $this->writeElement('alias', $alias->toString());
+ $this->endElement(); // aliases
+
+ $this->startElement('constraints');
+ if ($directive->version) $this->writeElement('version', $directive->version);
+ $this->startElement('type');
+ if ($directive->typeAllowsNull) $this->writeAttribute('allow-null', 'yes');
+ $this->text($directive->type);
+ $this->endElement(); // type
+ if ($directive->allowed) {
+ $this->startElement('allowed');
+ foreach ($directive->allowed as $value => $x) $this->writeElement('value', $value);
+ $this->endElement(); // allowed
+ }
+ $this->writeElement('default', $this->export($directive->default));
+ $this->writeAttribute('xml:space', 'preserve');
+ if ($directive->external) {
+ $this->startElement('external');
+ foreach ($directive->external as $project) $this->writeElement('project', $project);
+ $this->endElement();
+ }
+ $this->endElement(); // constraints
+
+ if ($directive->deprecatedVersion) {
+ $this->startElement('deprecated');
+ $this->writeElement('version', $directive->deprecatedVersion);
+ $this->writeElement('use', $directive->deprecatedUse->toString());
+ $this->endElement(); // deprecated
+ }
+
+ $this->startElement('description');
+ $this->writeHTMLDiv($directive->description);
+ $this->endElement(); // description
+
+ $this->endElement(); // directive
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Exceptions related to configuration schema
+ */
+class HTMLPurifier_ConfigSchema_Exception extends HTMLPurifier_Exception
+{
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Generic schema interchange format that can be converted to a runtime
+ * representation (HTMLPurifier_ConfigSchema) or HTML documentation. Members
+ * are completely validated.
+ */
+class HTMLPurifier_ConfigSchema_Interchange
+{
+
+ /**
+ * Name of the application this schema is describing.
+ */
+ public $name;
+
+ /**
+ * Array of Directive ID => array(directive info)
+ */
+ public $directives = array();
+
+ /**
+ * Adds a directive array to $directives
+ */
+ public function addDirective($directive) {
+ if (isset($this->directives[$i = $directive->id->toString()])) {
+ throw new HTMLPurifier_ConfigSchema_Exception("Cannot redefine directive '$i'");
+ }
+ $this->directives[$i] = $directive;
+ }
+
+ /**
+ * Convenience function to perform standard validation. Throws exception
+ * on failed validation.
+ */
+ public function validate() {
+ $validator = new HTMLPurifier_ConfigSchema_Validator();
+ return $validator->validate($this);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Interchange component class describing configuration directives.
+ */
+class HTMLPurifier_ConfigSchema_Interchange_Directive
+{
+
+ /**
+ * ID of directive, instance of HTMLPurifier_ConfigSchema_Interchange_Id.
+ */
+ public $id;
+
+ /**
+ * String type, e.g. 'integer' or 'istring'.
+ */
+ public $type;
+
+ /**
+ * Default value, e.g. 3 or 'DefaultVal'.
+ */
+ public $default;
+
+ /**
+ * HTML description.
+ */
+ public $description;
+
+ /**
+ * Boolean whether or not null is allowed as a value.
+ */
+ public $typeAllowsNull = false;
+
+ /**
+ * Lookup table of allowed scalar values, e.g. array('allowed' => true).
+ * Null if all values are allowed.
+ */
+ public $allowed;
+
+ /**
+ * List of aliases for the directive,
+ * e.g. array(new HTMLPurifier_ConfigSchema_Interchange_Id('Ns', 'Dir'))).
+ */
+ public $aliases = array();
+
+ /**
+ * Hash of value aliases, e.g. array('alt' => 'real'). Null if value
+ * aliasing is disabled (necessary for non-scalar types).
+ */
+ public $valueAliases;
+
+ /**
+ * Version of HTML Purifier the directive was introduced, e.g. '1.3.1'.
+ * Null if the directive has always existed.
+ */
+ public $version;
+
+ /**
+ * ID of directive that supercedes this old directive, is an instance
+ * of HTMLPurifier_ConfigSchema_Interchange_Id. Null if not deprecated.
+ */
+ public $deprecatedUse;
+
+ /**
+ * Version of HTML Purifier this directive was deprecated. Null if not
+ * deprecated.
+ */
+ public $deprecatedVersion;
+
+ /**
+ * List of external projects this directive depends on, e.g. array('CSSTidy').
+ */
+ public $external = array();
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Represents a directive ID in the interchange format.
+ */
+class HTMLPurifier_ConfigSchema_Interchange_Id
+{
+
+ public $key;
+
+ public function __construct($key) {
+ $this->key = $key;
+ }
+
+ /**
+ * @warning This is NOT magic, to ensure that people don't abuse SPL and
+ * cause problems for PHP 5.0 support.
+ */
+ public function toString() {
+ return $this->key;
+ }
+
+ public function getRootNamespace() {
+ return substr($this->key, 0, strpos($this->key, "."));
+ }
+
+ public function getDirective() {
+ return substr($this->key, strpos($this->key, ".") + 1);
+ }
+
+ public static function make($id) {
+ return new HTMLPurifier_ConfigSchema_Interchange_Id($id);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_ConfigSchema_InterchangeBuilder
+{
+
+ /**
+ * Used for processing DEFAULT, nothing else.
+ */
+ protected $varParser;
+
+ public function __construct($varParser = null) {
+ $this->varParser = $varParser ? $varParser : new HTMLPurifier_VarParser_Native();
+ }
+
+ public static function buildFromDirectory($dir = null) {
+ $builder = new HTMLPurifier_ConfigSchema_InterchangeBuilder();
+ $interchange = new HTMLPurifier_ConfigSchema_Interchange();
+ return $builder->buildDir($interchange, $dir);
+ }
+
+ public function buildDir($interchange, $dir = null) {
+ if (!$dir) $dir = HTMLPURIFIER_PREFIX . '/HTMLPurifier/ConfigSchema/schema';
+ if (file_exists($dir . '/info.ini')) {
+ $info = parse_ini_file($dir . '/info.ini');
+ $interchange->name = $info['name'];
+ }
+
+ $files = array();
+ $dh = opendir($dir);
+ while (false !== ($file = readdir($dh))) {
+ if (!$file || $file[0] == '.' || strrchr($file, '.') !== '.txt') {
+ continue;
+ }
+ $files[] = $file;
+ }
+ closedir($dh);
+
+ sort($files);
+ foreach ($files as $file) {
+ $this->buildFile($interchange, $dir . '/' . $file);
+ }
+
+ return $interchange;
+ }
+
+ public function buildFile($interchange, $file) {
+ $parser = new HTMLPurifier_StringHashParser();
+ $this->build(
+ $interchange,
+ new HTMLPurifier_StringHash( $parser->parseFile($file) )
+ );
+ }
+
+ /**
+ * Builds an interchange object based on a hash.
+ * @param $interchange HTMLPurifier_ConfigSchema_Interchange object to build
+ * @param $hash HTMLPurifier_ConfigSchema_StringHash source data
+ */
+ public function build($interchange, $hash) {
+ if (!$hash instanceof HTMLPurifier_StringHash) {
+ $hash = new HTMLPurifier_StringHash($hash);
+ }
+ if (!isset($hash['ID'])) {
+ throw new HTMLPurifier_ConfigSchema_Exception('Hash does not have any ID');
+ }
+ if (strpos($hash['ID'], '.') === false) {
+ if (count($hash) == 2 && isset($hash['DESCRIPTION'])) {
+ $hash->offsetGet('DESCRIPTION'); // prevent complaining
+ } else {
+ throw new HTMLPurifier_ConfigSchema_Exception('All directives must have a namespace');
+ }
+ } else {
+ $this->buildDirective($interchange, $hash);
+ }
+ $this->_findUnused($hash);
+ }
+
+ public function buildDirective($interchange, $hash) {
+ $directive = new HTMLPurifier_ConfigSchema_Interchange_Directive();
+
+ // These are required elements:
+ $directive->id = $this->id($hash->offsetGet('ID'));
+ $id = $directive->id->toString(); // convenience
+
+ if (isset($hash['TYPE'])) {
+ $type = explode('/', $hash->offsetGet('TYPE'));
+ if (isset($type[1])) $directive->typeAllowsNull = true;
+ $directive->type = $type[0];
+ } else {
+ throw new HTMLPurifier_ConfigSchema_Exception("TYPE in directive hash '$id' not defined");
+ }
+
+ if (isset($hash['DEFAULT'])) {
+ try {
+ $directive->default = $this->varParser->parse($hash->offsetGet('DEFAULT'), $directive->type, $directive->typeAllowsNull);
+ } catch (HTMLPurifier_VarParserException $e) {
+ throw new HTMLPurifier_ConfigSchema_Exception($e->getMessage() . " in DEFAULT in directive hash '$id'");
+ }
+ }
+
+ if (isset($hash['DESCRIPTION'])) {
+ $directive->description = $hash->offsetGet('DESCRIPTION');
+ }
+
+ if (isset($hash['ALLOWED'])) {
+ $directive->allowed = $this->lookup($this->evalArray($hash->offsetGet('ALLOWED')));
+ }
+
+ if (isset($hash['VALUE-ALIASES'])) {
+ $directive->valueAliases = $this->evalArray($hash->offsetGet('VALUE-ALIASES'));
+ }
+
+ if (isset($hash['ALIASES'])) {
+ $raw_aliases = trim($hash->offsetGet('ALIASES'));
+ $aliases = preg_split('/\s*,\s*/', $raw_aliases);
+ foreach ($aliases as $alias) {
+ $directive->aliases[] = $this->id($alias);
+ }
+ }
+
+ if (isset($hash['VERSION'])) {
+ $directive->version = $hash->offsetGet('VERSION');
+ }
+
+ if (isset($hash['DEPRECATED-USE'])) {
+ $directive->deprecatedUse = $this->id($hash->offsetGet('DEPRECATED-USE'));
+ }
+
+ if (isset($hash['DEPRECATED-VERSION'])) {
+ $directive->deprecatedVersion = $hash->offsetGet('DEPRECATED-VERSION');
+ }
+
+ if (isset($hash['EXTERNAL'])) {
+ $directive->external = preg_split('/\s*,\s*/', trim($hash->offsetGet('EXTERNAL')));
+ }
+
+ $interchange->addDirective($directive);
+ }
+
+ /**
+ * Evaluates an array PHP code string without array() wrapper
+ */
+ protected function evalArray($contents) {
+ return eval('return array('. $contents .');');
+ }
+
+ /**
+ * Converts an array list into a lookup array.
+ */
+ protected function lookup($array) {
+ $ret = array();
+ foreach ($array as $val) $ret[$val] = true;
+ return $ret;
+ }
+
+ /**
+ * Convenience function that creates an HTMLPurifier_ConfigSchema_Interchange_Id
+ * object based on a string Id.
+ */
+ protected function id($id) {
+ return HTMLPurifier_ConfigSchema_Interchange_Id::make($id);
+ }
+
+ /**
+ * Triggers errors for any unused keys passed in the hash; such keys
+ * may indicate typos, missing values, etc.
+ * @param $hash Instance of ConfigSchema_StringHash to check.
+ */
+ protected function _findUnused($hash) {
+ $accessed = $hash->getAccessed();
+ foreach ($hash as $k => $v) {
+ if (!isset($accessed[$k])) {
+ trigger_error("String hash key '$k' not used by builder", E_USER_NOTICE);
+ }
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Performs validations on HTMLPurifier_ConfigSchema_Interchange
+ *
+ * @note If you see '// handled by InterchangeBuilder', that means a
+ * design decision in that class would prevent this validation from
+ * ever being necessary. We have them anyway, however, for
+ * redundancy.
+ */
+class HTMLPurifier_ConfigSchema_Validator
+{
+
+ /**
+ * Easy to access global objects.
+ */
+ protected $interchange, $aliases;
+
+ /**
+ * Context-stack to provide easy to read error messages.
+ */
+ protected $context = array();
+
+ /**
+ * HTMLPurifier_VarParser to test default's type.
+ */
+ protected $parser;
+
+ public function __construct() {
+ $this->parser = new HTMLPurifier_VarParser();
+ }
+
+ /**
+ * Validates a fully-formed interchange object. Throws an
+ * HTMLPurifier_ConfigSchema_Exception if there's a problem.
+ */
+ public function validate($interchange) {
+ $this->interchange = $interchange;
+ $this->aliases = array();
+ // PHP is a bit lax with integer <=> string conversions in
+ // arrays, so we don't use the identical !== comparison
+ foreach ($interchange->directives as $i => $directive) {
+ $id = $directive->id->toString();
+ if ($i != $id) $this->error(false, "Integrity violation: key '$i' does not match internal id '$id'");
+ $this->validateDirective($directive);
+ }
+ return true;
+ }
+
+ /**
+ * Validates a HTMLPurifier_ConfigSchema_Interchange_Id object.
+ */
+ public function validateId($id) {
+ $id_string = $id->toString();
+ $this->context[] = "id '$id_string'";
+ if (!$id instanceof HTMLPurifier_ConfigSchema_Interchange_Id) {
+ // handled by InterchangeBuilder
+ $this->error(false, 'is not an instance of HTMLPurifier_ConfigSchema_Interchange_Id');
+ }
+ // keys are now unconstrained (we might want to narrow down to A-Za-z0-9.)
+ // we probably should check that it has at least one namespace
+ $this->with($id, 'key')
+ ->assertNotEmpty()
+ ->assertIsString(); // implicit assertIsString handled by InterchangeBuilder
+ array_pop($this->context);
+ }
+
+ /**
+ * Validates a HTMLPurifier_ConfigSchema_Interchange_Directive object.
+ */
+ public function validateDirective($d) {
+ $id = $d->id->toString();
+ $this->context[] = "directive '$id'";
+ $this->validateId($d->id);
+
+ $this->with($d, 'description')
+ ->assertNotEmpty();
+
+ // BEGIN - handled by InterchangeBuilder
+ $this->with($d, 'type')
+ ->assertNotEmpty();
+ $this->with($d, 'typeAllowsNull')
+ ->assertIsBool();
+ try {
+ // This also tests validity of $d->type
+ $this->parser->parse($d->default, $d->type, $d->typeAllowsNull);
+ } catch (HTMLPurifier_VarParserException $e) {
+ $this->error('default', 'had error: ' . $e->getMessage());
+ }
+ // END - handled by InterchangeBuilder
+
+ if (!is_null($d->allowed) || !empty($d->valueAliases)) {
+ // allowed and valueAliases require that we be dealing with
+ // strings, so check for that early.
+ $d_int = HTMLPurifier_VarParser::$types[$d->type];
+ if (!isset(HTMLPurifier_VarParser::$stringTypes[$d_int])) {
+ $this->error('type', 'must be a string type when used with allowed or value aliases');
+ }
+ }
+
+ $this->validateDirectiveAllowed($d);
+ $this->validateDirectiveValueAliases($d);
+ $this->validateDirectiveAliases($d);
+
+ array_pop($this->context);
+ }
+
+ /**
+ * Extra validation if $allowed member variable of
+ * HTMLPurifier_ConfigSchema_Interchange_Directive is defined.
+ */
+ public function validateDirectiveAllowed($d) {
+ if (is_null($d->allowed)) return;
+ $this->with($d, 'allowed')
+ ->assertNotEmpty()
+ ->assertIsLookup(); // handled by InterchangeBuilder
+ if (is_string($d->default) && !isset($d->allowed[$d->default])) {
+ $this->error('default', 'must be an allowed value');
+ }
+ $this->context[] = 'allowed';
+ foreach ($d->allowed as $val => $x) {
+ if (!is_string($val)) $this->error("value $val", 'must be a string');
+ }
+ array_pop($this->context);
+ }
+
+ /**
+ * Extra validation if $valueAliases member variable of
+ * HTMLPurifier_ConfigSchema_Interchange_Directive is defined.
+ */
+ public function validateDirectiveValueAliases($d) {
+ if (is_null($d->valueAliases)) return;
+ $this->with($d, 'valueAliases')
+ ->assertIsArray(); // handled by InterchangeBuilder
+ $this->context[] = 'valueAliases';
+ foreach ($d->valueAliases as $alias => $real) {
+ if (!is_string($alias)) $this->error("alias $alias", 'must be a string');
+ if (!is_string($real)) $this->error("alias target $real from alias '$alias'", 'must be a string');
+ if ($alias === $real) {
+ $this->error("alias '$alias'", "must not be an alias to itself");
+ }
+ }
+ if (!is_null($d->allowed)) {
+ foreach ($d->valueAliases as $alias => $real) {
+ if (isset($d->allowed[$alias])) {
+ $this->error("alias '$alias'", 'must not be an allowed value');
+ } elseif (!isset($d->allowed[$real])) {
+ $this->error("alias '$alias'", 'must be an alias to an allowed value');
+ }
+ }
+ }
+ array_pop($this->context);
+ }
+
+ /**
+ * Extra validation if $aliases member variable of
+ * HTMLPurifier_ConfigSchema_Interchange_Directive is defined.
+ */
+ public function validateDirectiveAliases($d) {
+ $this->with($d, 'aliases')
+ ->assertIsArray(); // handled by InterchangeBuilder
+ $this->context[] = 'aliases';
+ foreach ($d->aliases as $alias) {
+ $this->validateId($alias);
+ $s = $alias->toString();
+ if (isset($this->interchange->directives[$s])) {
+ $this->error("alias '$s'", 'collides with another directive');
+ }
+ if (isset($this->aliases[$s])) {
+ $other_directive = $this->aliases[$s];
+ $this->error("alias '$s'", "collides with alias for directive '$other_directive'");
+ }
+ $this->aliases[$s] = $d->id->toString();
+ }
+ array_pop($this->context);
+ }
+
+ // protected helper functions
+
+ /**
+ * Convenience function for generating HTMLPurifier_ConfigSchema_ValidatorAtom
+ * for validating simple member variables of objects.
+ */
+ protected function with($obj, $member) {
+ return new HTMLPurifier_ConfigSchema_ValidatorAtom($this->getFormattedContext(), $obj, $member);
+ }
+
+ /**
+ * Emits an error, providing helpful context.
+ */
+ protected function error($target, $msg) {
+ if ($target !== false) $prefix = ucfirst($target) . ' in ' . $this->getFormattedContext();
+ else $prefix = ucfirst($this->getFormattedContext());
+ throw new HTMLPurifier_ConfigSchema_Exception(trim($prefix . ' ' . $msg));
+ }
+
+ /**
+ * Returns a formatted context string.
+ */
+ protected function getFormattedContext() {
+ return implode(' in ', array_reverse($this->context));
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Fluent interface for validating the contents of member variables.
+ * This should be immutable. See HTMLPurifier_ConfigSchema_Validator for
+ * use-cases. We name this an 'atom' because it's ONLY for validations that
+ * are independent and usually scalar.
+ */
+class HTMLPurifier_ConfigSchema_ValidatorAtom
+{
+
+ protected $context, $obj, $member, $contents;
+
+ public function __construct($context, $obj, $member) {
+ $this->context = $context;
+ $this->obj = $obj;
+ $this->member = $member;
+ $this->contents =& $obj->$member;
+ }
+
+ public function assertIsString() {
+ if (!is_string($this->contents)) $this->error('must be a string');
+ return $this;
+ }
+
+ public function assertIsBool() {
+ if (!is_bool($this->contents)) $this->error('must be a boolean');
+ return $this;
+ }
+
+ public function assertIsArray() {
+ if (!is_array($this->contents)) $this->error('must be an array');
+ return $this;
+ }
+
+ public function assertNotNull() {
+ if ($this->contents === null) $this->error('must not be null');
+ return $this;
+ }
+
+ public function assertAlnum() {
+ $this->assertIsString();
+ if (!ctype_alnum($this->contents)) $this->error('must be alphanumeric');
+ return $this;
+ }
+
+ public function assertNotEmpty() {
+ if (empty($this->contents)) $this->error('must not be empty');
+ return $this;
+ }
+
+ public function assertIsLookup() {
+ $this->assertIsArray();
+ foreach ($this->contents as $v) {
+ if ($v !== true) $this->error('must be a lookup array');
+ }
+ return $this;
+ }
+
+ protected function error($msg) {
+ throw new HTMLPurifier_ConfigSchema_Exception(ucfirst($this->member) . ' in ' . $this->context . ' ' . $msg);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+Attr.AllowedClasses
+TYPE: lookup/null
+VERSION: 4.0.0
+DEFAULT: null
+--DESCRIPTION--
+List of allowed class values in the class attribute. By default, this is null,
+which means all classes are allowed.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.AllowedFrameTargets
+TYPE: lookup
+DEFAULT: array()
+--DESCRIPTION--
+Lookup table of all allowed link frame targets. Some commonly used link
+targets include _blank, _self, _parent and _top. Values should be
+lowercase, as validation will be done in a case-sensitive manner despite
+W3C's recommendation. XHTML 1.0 Strict does not permit the target attribute
+so this directive will have no effect in that doctype. XHTML 1.1 does not
+enable the Target module by default, you will have to manually enable it
+(see the module documentation for more details.)
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.AllowedRel
+TYPE: lookup
+VERSION: 1.6.0
+DEFAULT: array()
+--DESCRIPTION--
+List of allowed forward document relationships in the rel attribute. Common
+values may be nofollow or print. By default, this is empty, meaning that no
+document relationships are allowed.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.AllowedRev
+TYPE: lookup
+VERSION: 1.6.0
+DEFAULT: array()
+--DESCRIPTION--
+List of allowed reverse document relationships in the rev attribute. This
+attribute is a bit of an edge-case; if you don't know what it is for, stay
+away.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.ClassUseCDATA
+TYPE: bool/null
+DEFAULT: null
+VERSION: 4.0.0
+--DESCRIPTION--
+If null, class will auto-detect the doctype and, if matching XHTML 1.1 or
+XHTML 2.0, will use the restrictive NMTOKENS specification of class. Otherwise,
+it will use a relaxed CDATA definition. If true, the relaxed CDATA definition
+is forced; if false, the NMTOKENS definition is forced. To get behavior
+of HTML Purifier prior to 4.0.0, set this directive to false.
+
+Some rational behind the auto-detection:
+in previous versions of HTML Purifier, it was assumed that the form of
+class was NMTOKENS, as specified by the XHTML Modularization (representing
+XHTML 1.1 and XHTML 2.0). The DTDs for HTML 4.01 and XHTML 1.0, however
+specify class as CDATA. HTML 5 effectively defines it as CDATA, but
+with the additional constraint that each name should be unique (this is not
+explicitly outlined in previous specifications).
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.DefaultImageAlt
+TYPE: string/null
+DEFAULT: null
+VERSION: 3.2.0
+--DESCRIPTION--
+This is the content of the alt tag of an image if the user had not
+previously specified an alt attribute. This applies to all images without
+a valid alt attribute, as opposed to %Attr.DefaultInvalidImageAlt, which
+only applies to invalid images, and overrides in the case of an invalid image.
+Default behavior with null is to use the basename of the src tag for the alt.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.DefaultInvalidImage
+TYPE: string
+DEFAULT: ''
+--DESCRIPTION--
+This is the default image an img tag will be pointed to if it does not have
+a valid src attribute. In future versions, we may allow the image tag to
+be removed completely, but due to design issues, this is not possible right
+now.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.DefaultInvalidImageAlt
+TYPE: string
+DEFAULT: 'Invalid image'
+--DESCRIPTION--
+This is the content of the alt tag of an invalid image if the user had not
+previously specified an alt attribute. It has no effect when the image is
+valid but there was no alt attribute present.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.DefaultTextDir
+TYPE: string
+DEFAULT: 'ltr'
+--DESCRIPTION--
+Defines the default text direction (ltr or rtl) of the document being
+parsed. This generally is the same as the value of the dir attribute in
+HTML, or ltr if that is not specified.
+--ALLOWED--
+'ltr', 'rtl'
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.EnableID
+TYPE: bool
+DEFAULT: false
+VERSION: 1.2.0
+--DESCRIPTION--
+Allows the ID attribute in HTML. This is disabled by default due to the
+fact that without proper configuration user input can easily break the
+validation of a webpage by specifying an ID that is already on the
+surrounding HTML. If you don't mind throwing caution to the wind, enable
+this directive, but I strongly recommend you also consider blacklisting IDs
+you use (%Attr.IDBlacklist) or prefixing all user supplied IDs
+(%Attr.IDPrefix). When set to true HTML Purifier reverts to the behavior of
+pre-1.2.0 versions.
+--ALIASES--
+HTML.EnableAttrID
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.ForbiddenClasses
+TYPE: lookup
+VERSION: 4.0.0
+DEFAULT: array()
+--DESCRIPTION--
+List of forbidden class values in the class attribute. By default, this is
+empty, which means that no classes are forbidden. See also %Attr.AllowedClasses.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.IDBlacklist
+TYPE: list
+DEFAULT: array()
+DESCRIPTION: Array of IDs not allowed in the document.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.IDBlacklistRegexp
+TYPE: string/null
+VERSION: 1.6.0
+DEFAULT: NULL
+--DESCRIPTION--
+PCRE regular expression to be matched against all IDs. If the expression is
+matches, the ID is rejected. Use this with care: may cause significant
+degradation. ID matching is done after all other validation.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.IDPrefix
+TYPE: string
+VERSION: 1.2.0
+DEFAULT: ''
+--DESCRIPTION--
+String to prefix to IDs. If you have no idea what IDs your pages may use,
+you may opt to simply add a prefix to all user-submitted ID attributes so
+that they are still usable, but will not conflict with core page IDs.
+Example: setting the directive to 'user_' will result in a user submitted
+'foo' to become 'user_foo' Be sure to set %HTML.EnableAttrID to true
+before using this.
+--# vim: et sw=4 sts=4
--- /dev/null
+Attr.IDPrefixLocal
+TYPE: string
+VERSION: 1.2.0
+DEFAULT: ''
+--DESCRIPTION--
+Temporary prefix for IDs used in conjunction with %Attr.IDPrefix. If you
+need to allow multiple sets of user content on web page, you may need to
+have a seperate prefix that changes with each iteration. This way,
+seperately submitted user content displayed on the same page doesn't
+clobber each other. Ideal values are unique identifiers for the content it
+represents (i.e. the id of the row in the database). Be sure to add a
+seperator (like an underscore) at the end. Warning: this directive will
+not work unless %Attr.IDPrefix is set to a non-empty value!
+--# vim: et sw=4 sts=4
--- /dev/null
+AutoFormat.AutoParagraph
+TYPE: bool
+VERSION: 2.0.1
+DEFAULT: false
+--DESCRIPTION--
+
+<p>
+ This directive turns on auto-paragraphing, where double newlines are
+ converted in to paragraphs whenever possible. Auto-paragraphing:
+</p>
+<ul>
+ <li>Always applies to inline elements or text in the root node,</li>
+ <li>Applies to inline elements or text with double newlines in nodes
+ that allow paragraph tags,</li>
+ <li>Applies to double newlines in paragraph tags</li>
+</ul>
+<p>
+ <code>p</code> tags must be allowed for this directive to take effect.
+ We do not use <code>br</code> tags for paragraphing, as that is
+ semantically incorrect.
+</p>
+<p>
+ To prevent auto-paragraphing as a content-producer, refrain from using
+ double-newlines except to specify a new paragraph or in contexts where
+ it has special meaning (whitespace usually has no meaning except in
+ tags like <code>pre</code>, so this should not be difficult.) To prevent
+ the paragraphing of inline text adjacent to block elements, wrap them
+ in <code>div</code> tags (the behavior is slightly different outside of
+ the root node.)
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+AutoFormat.Custom
+TYPE: list
+VERSION: 2.0.1
+DEFAULT: array()
+--DESCRIPTION--
+
+<p>
+ This directive can be used to add custom auto-format injectors.
+ Specify an array of injector names (class name minus the prefix)
+ or concrete implementations. Injector class must exist.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+AutoFormat.DisplayLinkURI
+TYPE: bool
+VERSION: 3.2.0
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ This directive turns on the in-text display of URIs in <a> tags, and disables
+ those links. For example, <a href="http://example.com">example</a> becomes
+ example (<a>http://example.com</a>).
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+AutoFormat.Linkify
+TYPE: bool
+VERSION: 2.0.1
+DEFAULT: false
+--DESCRIPTION--
+
+<p>
+ This directive turns on linkification, auto-linking http, ftp and
+ https URLs. <code>a</code> tags with the <code>href</code> attribute
+ must be allowed.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+AutoFormat.PurifierLinkify.DocURL
+TYPE: string
+VERSION: 2.0.1
+DEFAULT: '#%s'
+ALIASES: AutoFormatParam.PurifierLinkifyDocURL
+--DESCRIPTION--
+<p>
+ Location of configuration documentation to link to, let %s substitute
+ into the configuration's namespace and directive names sans the percent
+ sign.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+AutoFormat.PurifierLinkify
+TYPE: bool
+VERSION: 2.0.1
+DEFAULT: false
+--DESCRIPTION--
+
+<p>
+ Internal auto-formatter that converts configuration directives in
+ syntax <a>%Namespace.Directive</a> to links. <code>a</code> tags
+ with the <code>href</code> attribute must be allowed.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions
+TYPE: lookup
+VERSION: 4.0.0
+DEFAULT: array('td' => true, 'th' => true)
+--DESCRIPTION--
+<p>
+ When %AutoFormat.RemoveEmpty and %AutoFormat.RemoveEmpty.RemoveNbsp
+ are enabled, this directive defines what HTML elements should not be
+ removede if they have only a non-breaking space in them.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+AutoFormat.RemoveEmpty.RemoveNbsp
+TYPE: bool
+VERSION: 4.0.0
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ When enabled, HTML Purifier will treat any elements that contain only
+ non-breaking spaces as well as regular whitespace as empty, and remove
+ them when %AutoForamt.RemoveEmpty is enabled.
+</p>
+<p>
+ See %AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions for a list of elements
+ that don't have this behavior applied to them.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+AutoFormat.RemoveEmpty
+TYPE: bool
+VERSION: 3.2.0
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ When enabled, HTML Purifier will attempt to remove empty elements that
+ contribute no semantic information to the document. The following types
+ of nodes will be removed:
+</p>
+<ul><li>
+ Tags with no attributes and no content, and that are not empty
+ elements (remove <code><a></a></code> but not
+ <code><br /></code>), and
+ </li>
+ <li>
+ Tags with no content, except for:<ul>
+ <li>The <code>colgroup</code> element, or</li>
+ <li>
+ Elements with the <code>id</code> or <code>name</code> attribute,
+ when those attributes are permitted on those elements.
+ </li>
+ </ul></li>
+</ul>
+<p>
+ Please be very careful when using this functionality; while it may not
+ seem that empty elements contain useful information, they can alter the
+ layout of a document given appropriate styling. This directive is most
+ useful when you are processing machine-generated HTML, please avoid using
+ it on regular user HTML.
+</p>
+<p>
+ Elements that contain only whitespace will be treated as empty. Non-breaking
+ spaces, however, do not count as whitespace. See
+ %AutoFormat.RemoveEmpty.RemoveNbsp for alternate behavior.
+</p>
+<p>
+ This algorithm is not perfect; you may still notice some empty tags,
+ particularly if a node had elements, but those elements were later removed
+ because they were not permitted in that context, or tags that, after
+ being auto-closed by another tag, where empty. This is for safety reasons
+ to prevent clever code from breaking validation. The general rule of thumb:
+ if a tag looked empty on the way in, it will get removed; if HTML Purifier
+ made it empty, it will stay.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+CSS.AllowImportant
+TYPE: bool
+DEFAULT: false
+VERSION: 3.1.0
+--DESCRIPTION--
+This parameter determines whether or not !important cascade modifiers should
+be allowed in user CSS. If false, !important will stripped.
+--# vim: et sw=4 sts=4
--- /dev/null
+CSS.AllowTricky
+TYPE: bool
+DEFAULT: false
+VERSION: 3.1.0
+--DESCRIPTION--
+This parameter determines whether or not to allow "tricky" CSS properties and
+values. Tricky CSS properties/values can drastically modify page layout or
+be used for deceptive practices but do not directly constitute a security risk.
+For example, <code>display:none;</code> is considered a tricky property that
+will only be allowed if this directive is set to true.
+--# vim: et sw=4 sts=4
--- /dev/null
+CSS.AllowedProperties
+TYPE: lookup/null
+VERSION: 3.1.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ If HTML Purifier's style attributes set is unsatisfactory for your needs,
+ you can overload it with your own list of tags to allow. Note that this
+ method is subtractive: it does its job by taking away from HTML Purifier
+ usual feature set, so you cannot add an attribute that HTML Purifier never
+ supported in the first place.
+</p>
+<p>
+ <strong>Warning:</strong> If another directive conflicts with the
+ elements here, <em>that</em> directive will win and override.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+CSS.DefinitionRev
+TYPE: int
+VERSION: 2.0.0
+DEFAULT: 1
+--DESCRIPTION--
+
+<p>
+ Revision identifier for your custom definition. See
+ %HTML.DefinitionRev for details.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+CSS.MaxImgLength
+TYPE: string/null
+DEFAULT: '1200px'
+VERSION: 3.1.1
+--DESCRIPTION--
+<p>
+ This parameter sets the maximum allowed length on <code>img</code> tags,
+ effectively the <code>width</code> and <code>height</code> properties.
+ Only absolute units of measurement (in, pt, pc, mm, cm) and pixels (px) are allowed. This is
+ in place to prevent imagecrash attacks, disable with null at your own risk.
+ This directive is similar to %HTML.MaxImgLength, and both should be
+ concurrently edited, although there are
+ subtle differences in the input format (the CSS max is a number with
+ a unit).
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+CSS.Proprietary
+TYPE: bool
+VERSION: 3.0.0
+DEFAULT: false
+--DESCRIPTION--
+
+<p>
+ Whether or not to allow safe, proprietary CSS values.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Cache.DefinitionImpl
+TYPE: string/null
+VERSION: 2.0.0
+DEFAULT: 'Serializer'
+--DESCRIPTION--
+
+This directive defines which method to use when caching definitions,
+the complex data-type that makes HTML Purifier tick. Set to null
+to disable caching (not recommended, as you will see a definite
+performance degradation).
+
+--ALIASES--
+Core.DefinitionCache
+--# vim: et sw=4 sts=4
--- /dev/null
+Cache.SerializerPath
+TYPE: string/null
+VERSION: 2.0.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ Absolute path with no trailing slash to store serialized definitions in.
+ Default is within the
+ HTML Purifier library inside DefinitionCache/Serializer. This
+ path must be writable by the webserver.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.AggressivelyFixLt
+TYPE: bool
+VERSION: 2.1.0
+DEFAULT: true
+--DESCRIPTION--
+<p>
+ This directive enables aggressive pre-filter fixes HTML Purifier can
+ perform in order to ensure that open angled-brackets do not get killed
+ during parsing stage. Enabling this will result in two preg_replace_callback
+ calls and at least two preg_replace calls for every HTML document parsed;
+ if your users make very well-formed HTML, you can set this directive false.
+ This has no effect when DirectLex is used.
+</p>
+<p>
+ <strong>Notice:</strong> This directive's default turned from false to true
+ in HTML Purifier 3.2.0.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.CollectErrors
+TYPE: bool
+VERSION: 2.0.0
+DEFAULT: false
+--DESCRIPTION--
+
+Whether or not to collect errors found while filtering the document. This
+is a useful way to give feedback to your users. <strong>Warning:</strong>
+Currently this feature is very patchy and experimental, with lots of
+possible error messages not yet implemented. It will not cause any
+problems, but it may not help your users either.
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.ColorKeywords
+TYPE: hash
+VERSION: 2.0.0
+--DEFAULT--
+array (
+ 'maroon' => '#800000',
+ 'red' => '#FF0000',
+ 'orange' => '#FFA500',
+ 'yellow' => '#FFFF00',
+ 'olive' => '#808000',
+ 'purple' => '#800080',
+ 'fuchsia' => '#FF00FF',
+ 'white' => '#FFFFFF',
+ 'lime' => '#00FF00',
+ 'green' => '#008000',
+ 'navy' => '#000080',
+ 'blue' => '#0000FF',
+ 'aqua' => '#00FFFF',
+ 'teal' => '#008080',
+ 'black' => '#000000',
+ 'silver' => '#C0C0C0',
+ 'gray' => '#808080',
+)
+--DESCRIPTION--
+
+Lookup array of color names to six digit hexadecimal number corresponding
+to color, with preceding hash mark. Used when parsing colors.
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.ConvertDocumentToFragment
+TYPE: bool
+DEFAULT: true
+--DESCRIPTION--
+
+This parameter determines whether or not the filter should convert
+input that is a full document with html and body tags to a fragment
+of just the contents of a body tag. This parameter is simply something
+HTML Purifier can do during an edge-case: for most inputs, this
+processing is not necessary.
+
+--ALIASES--
+Core.AcceptFullDocuments
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.DirectLexLineNumberSyncInterval
+TYPE: int
+VERSION: 2.0.0
+DEFAULT: 0
+--DESCRIPTION--
+
+<p>
+ Specifies the number of tokens the DirectLex line number tracking
+ implementations should process before attempting to resyncronize the
+ current line count by manually counting all previous new-lines. When
+ at 0, this functionality is disabled. Lower values will decrease
+ performance, and this is only strictly necessary if the counting
+ algorithm is buggy (in which case you should report it as a bug).
+ This has no effect when %Core.MaintainLineNumbers is disabled or DirectLex is
+ not being used.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.Encoding
+TYPE: istring
+DEFAULT: 'utf-8'
+--DESCRIPTION--
+If for some reason you are unable to convert all webpages to UTF-8, you can
+use this directive as a stop-gap compatibility change to let HTML Purifier
+deal with non UTF-8 input. This technique has notable deficiencies:
+absolutely no characters outside of the selected character encoding will be
+preserved, not even the ones that have been ampersand escaped (this is due
+to a UTF-8 specific <em>feature</em> that automatically resolves all
+entities), making it pretty useless for anything except the most I18N-blind
+applications, although %Core.EscapeNonASCIICharacters offers fixes this
+trouble with another tradeoff. This directive only accepts ISO-8859-1 if
+iconv is not enabled.
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.EscapeInvalidChildren
+TYPE: bool
+DEFAULT: false
+--DESCRIPTION--
+When true, a child is found that is not allowed in the context of the
+parent element will be transformed into text as if it were ASCII. When
+false, that element and all internal tags will be dropped, though text will
+be preserved. There is no option for dropping the element but preserving
+child nodes.
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.EscapeInvalidTags
+TYPE: bool
+DEFAULT: false
+--DESCRIPTION--
+When true, invalid tags will be written back to the document as plain text.
+Otherwise, they are silently dropped.
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.EscapeNonASCIICharacters
+TYPE: bool
+VERSION: 1.4.0
+DEFAULT: false
+--DESCRIPTION--
+This directive overcomes a deficiency in %Core.Encoding by blindly
+converting all non-ASCII characters into decimal numeric entities before
+converting it to its native encoding. This means that even characters that
+can be expressed in the non-UTF-8 encoding will be entity-ized, which can
+be a real downer for encodings like Big5. It also assumes that the ASCII
+repetoire is available, although this is the case for almost all encodings.
+Anyway, use UTF-8!
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.HiddenElements
+TYPE: lookup
+--DEFAULT--
+array (
+ 'script' => true,
+ 'style' => true,
+)
+--DESCRIPTION--
+
+<p>
+ This directive is a lookup array of elements which should have their
+ contents removed when they are not allowed by the HTML definition.
+ For example, the contents of a <code>script</code> tag are not
+ normally shown in a document, so if script tags are to be removed,
+ their contents should be removed to. This is opposed to a <code>b</code>
+ tag, which defines some presentational changes but does not hide its
+ contents.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.Language
+TYPE: string
+VERSION: 2.0.0
+DEFAULT: 'en'
+--DESCRIPTION--
+
+ISO 639 language code for localizable things in HTML Purifier to use,
+which is mainly error reporting. There is currently only an English (en)
+translation, so this directive is currently useless.
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.LexerImpl
+TYPE: mixed/null
+VERSION: 2.0.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ This parameter determines what lexer implementation can be used. The
+ valid values are:
+</p>
+<dl>
+ <dt><em>null</em></dt>
+ <dd>
+ Recommended, the lexer implementation will be auto-detected based on
+ your PHP-version and configuration.
+ </dd>
+ <dt><em>string</em> lexer identifier</dt>
+ <dd>
+ This is a slim way of manually overridding the implementation.
+ Currently recognized values are: DOMLex (the default PHP5
+implementation)
+ and DirectLex (the default PHP4 implementation). Only use this if
+ you know what you are doing: usually, the auto-detection will
+ manage things for cases you aren't even aware of.
+ </dd>
+ <dt><em>object</em> lexer instance</dt>
+ <dd>
+ Super-advanced: you can specify your own, custom, implementation that
+ implements the interface defined by <code>HTMLPurifier_Lexer</code>.
+ I may remove this option simply because I don't expect anyone
+ to use it.
+ </dd>
+</dl>
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.MaintainLineNumbers
+TYPE: bool/null
+VERSION: 2.0.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ If true, HTML Purifier will add line number information to all tokens.
+ This is useful when error reporting is turned on, but can result in
+ significant performance degradation and should not be used when
+ unnecessary. This directive must be used with the DirectLex lexer,
+ as the DOMLex lexer does not (yet) support this functionality.
+ If the value is null, an appropriate value will be selected based
+ on other configuration.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.RemoveInvalidImg
+TYPE: bool
+DEFAULT: true
+VERSION: 1.3.0
+--DESCRIPTION--
+
+<p>
+ This directive enables pre-emptive URI checking in <code>img</code>
+ tags, as the attribute validation strategy is not authorized to
+ remove elements from the document. Revert to pre-1.3.0 behavior by setting to false.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Core.RemoveScriptContents
+TYPE: bool/null
+DEFAULT: NULL
+VERSION: 2.0.0
+DEPRECATED-VERSION: 2.1.0
+DEPRECATED-USE: Core.HiddenElements
+--DESCRIPTION--
+<p>
+ This directive enables HTML Purifier to remove not only script tags
+ but all of their contents.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Filter.Custom
+TYPE: list
+VERSION: 3.1.0
+DEFAULT: array()
+--DESCRIPTION--
+<p>
+ This directive can be used to add custom filters; it is nearly the
+ equivalent of the now deprecated <code>HTMLPurifier->addFilter()</code>
+ method. Specify an array of concrete implementations.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Filter.ExtractStyleBlocks.Escaping
+TYPE: bool
+VERSION: 3.0.0
+DEFAULT: true
+ALIASES: Filter.ExtractStyleBlocksEscaping, FilterParam.ExtractStyleBlocksEscaping
+--DESCRIPTION--
+
+<p>
+ Whether or not to escape the dangerous characters <, > and &
+ as \3C, \3E and \26, respectively. This is can be safely set to false
+ if the contents of StyleBlocks will be placed in an external stylesheet,
+ where there is no risk of it being interpreted as HTML.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Filter.ExtractStyleBlocks.Scope
+TYPE: string/null
+VERSION: 3.0.0
+DEFAULT: NULL
+ALIASES: Filter.ExtractStyleBlocksScope, FilterParam.ExtractStyleBlocksScope
+--DESCRIPTION--
+
+<p>
+ If you would like users to be able to define external stylesheets, but
+ only allow them to specify CSS declarations for a specific node and
+ prevent them from fiddling with other elements, use this directive.
+ It accepts any valid CSS selector, and will prepend this to any
+ CSS declaration extracted from the document. For example, if this
+ directive is set to <code>#user-content</code> and a user uses the
+ selector <code>a:hover</code>, the final selector will be
+ <code>#user-content a:hover</code>.
+</p>
+<p>
+ The comma shorthand may be used; consider the above example, with
+ <code>#user-content, #user-content2</code>, the final selector will
+ be <code>#user-content a:hover, #user-content2 a:hover</code>.
+</p>
+<p>
+ <strong>Warning:</strong> It is possible for users to bypass this measure
+ using a naughty + selector. This is a bug in CSS Tidy 1.3, not HTML
+ Purifier, and I am working to get it fixed. Until then, HTML Purifier
+ performs a basic check to prevent this.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Filter.ExtractStyleBlocks.TidyImpl
+TYPE: mixed/null
+VERSION: 3.1.0
+DEFAULT: NULL
+ALIASES: FilterParam.ExtractStyleBlocksTidyImpl
+--DESCRIPTION--
+<p>
+ If left NULL, HTML Purifier will attempt to instantiate a <code>csstidy</code>
+ class to use for internal cleaning. This will usually be good enough.
+</p>
+<p>
+ However, for trusted user input, you can set this to <code>false</code> to
+ disable cleaning. In addition, you can supply your own concrete implementation
+ of Tidy's interface to use, although I don't know why you'd want to do that.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Filter.ExtractStyleBlocks
+TYPE: bool
+VERSION: 3.1.0
+DEFAULT: false
+EXTERNAL: CSSTidy
+--DESCRIPTION--
+<p>
+ This directive turns on the style block extraction filter, which removes
+ <code>style</code> blocks from input HTML, cleans them up with CSSTidy,
+ and places them in the <code>StyleBlocks</code> context variable, for further
+ use by you, usually to be placed in an external stylesheet, or a
+ <code>style</code> block in the <code>head</code> of your document.
+</p>
+<p>
+ Sample usage:
+</p>
+<pre><![CDATA[
+<?php
+ header('Content-type: text/html; charset=utf-8');
+ echo '<?xml version="1.0" encoding="UTF-8"?>';
+?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
+<head>
+ <title>Filter.ExtractStyleBlocks</title>
+<?php
+ require_once '/path/to/library/HTMLPurifier.auto.php';
+ require_once '/path/to/csstidy.class.php';
+
+ $dirty = '<style>body {color:#F00;}</style> Some text';
+
+ $config = HTMLPurifier_Config::createDefault();
+ $config->set('Filter', 'ExtractStyleBlocks', true);
+ $purifier = new HTMLPurifier($config);
+
+ $html = $purifier->purify($dirty);
+
+ // This implementation writes the stylesheets to the styles/ directory.
+ // You can also echo the styles inside the document, but it's a bit
+ // more difficult to make sure they get interpreted properly by
+ // browsers; try the usual CSS armoring techniques.
+ $styles = $purifier->context->get('StyleBlocks');
+ $dir = 'styles/';
+ if (!is_dir($dir)) mkdir($dir);
+ $hash = sha1($_GET['html']);
+ foreach ($styles as $i => $style) {
+ file_put_contents($name = $dir . $hash . "_$i");
+ echo '<link rel="stylesheet" type="text/css" href="'.$name.'" />';
+ }
+?>
+</head>
+<body>
+ <div>
+ <?php echo $html; ?>
+ </div>
+</b]]><![CDATA[ody>
+</html>
+]]></pre>
+<p>
+ <strong>Warning:</strong> It is possible for a user to mount an
+ imagecrash attack using this CSS. Counter-measures are difficult;
+ it is not simply enough to limit the range of CSS lengths (using
+ relative lengths with many nesting levels allows for large values
+ to be attained without actually specifying them in the stylesheet),
+ and the flexible nature of selectors makes it difficult to selectively
+ disable lengths on image tags (HTML Purifier, however, does disable
+ CSS width and height in inline styling). There are probably two effective
+ counter measures: an explicit width and height set to auto in all
+ images in your document (unlikely) or the disabling of width and
+ height (somewhat reasonable). Whether or not these measures should be
+ used is left to the reader.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Filter.YouTube
+TYPE: bool
+VERSION: 3.1.0
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ This directive enables YouTube video embedding in HTML Purifier. Check
+ <a href="http://htmlpurifier.org/docs/enduser-youtube.html">this document
+ on embedding videos</a> for more information on what this filter does.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.Allowed
+TYPE: itext/null
+VERSION: 2.0.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ This is a convenience directive that rolls the functionality of
+ %HTML.AllowedElements and %HTML.AllowedAttributes into one directive.
+ Specify elements and attributes that are allowed using:
+ <code>element1[attr1|attr2],element2...</code>. You can also use
+ newlines instead of commas to separate elements.
+</p>
+<p>
+ <strong>Warning</strong>:
+ All of the constraints on the component directives are still enforced.
+ The syntax is a <em>subset</em> of TinyMCE's <code>valid_elements</code>
+ whitelist: directly copy-pasting it here will probably result in
+ broken whitelists. If %HTML.AllowedElements or %HTML.AllowedAttributes
+ are set, this directive has no effect.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.AllowedAttributes
+TYPE: lookup/null
+VERSION: 1.3.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ If HTML Purifier's attribute set is unsatisfactory, overload it!
+ The syntax is "tag.attr" or "*.attr" for the global attributes
+ (style, id, class, dir, lang, xml:lang).
+</p>
+<p>
+ <strong>Warning:</strong> If another directive conflicts with the
+ elements here, <em>that</em> directive will win and override. For
+ example, %HTML.EnableAttrID will take precedence over *.id in this
+ directive. You must set that directive to true before you can use
+ IDs at all.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.AllowedElements
+TYPE: lookup/null
+VERSION: 1.3.0
+DEFAULT: NULL
+--DESCRIPTION--
+<p>
+ If HTML Purifier's tag set is unsatisfactory for your needs, you
+ can overload it with your own list of tags to allow. Note that this
+ method is subtractive: it does its job by taking away from HTML Purifier
+ usual feature set, so you cannot add a tag that HTML Purifier never
+ supported in the first place (like embed, form or head). If you
+ change this, you probably also want to change %HTML.AllowedAttributes.
+</p>
+<p>
+ <strong>Warning:</strong> If another directive conflicts with the
+ elements here, <em>that</em> directive will win and override.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.AllowedModules
+TYPE: lookup/null
+VERSION: 2.0.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ A doctype comes with a set of usual modules to use. Without having
+ to mucking about with the doctypes, you can quickly activate or
+ disable these modules by specifying which modules you wish to allow
+ with this directive. This is most useful for unit testing specific
+ modules, although end users may find it useful for their own ends.
+</p>
+<p>
+ If you specify a module that does not exist, the manager will silently
+ fail to use it, so be careful! User-defined modules are not affected
+ by this directive. Modules defined in %HTML.CoreModules are not
+ affected by this directive.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.Attr.Name.UseCDATA
+TYPE: bool
+DEFAULT: false
+VERSION: 4.0.0
+--DESCRIPTION--
+The W3C specification DTD defines the name attribute to be CDATA, not ID, due
+to limitations of DTD. In certain documents, this relaxed behavior is desired,
+whether it is to specify duplicate names, or to specify names that would be
+illegal IDs (for example, names that begin with a digit.) Set this configuration
+directive to true to use the relaxed parsing rules.
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.BlockWrapper
+TYPE: string
+VERSION: 1.3.0
+DEFAULT: 'p'
+--DESCRIPTION--
+
+<p>
+ String name of element to wrap inline elements that are inside a block
+ context. This only occurs in the children of blockquote in strict mode.
+</p>
+<p>
+ Example: by default value,
+ <code><blockquote>Foo</blockquote></code> would become
+ <code><blockquote><p>Foo</p></blockquote></code>.
+ The <code><p></code> tags can be replaced with whatever you desire,
+ as long as it is a block level element.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.CoreModules
+TYPE: lookup
+VERSION: 2.0.0
+--DEFAULT--
+array (
+ 'Structure' => true,
+ 'Text' => true,
+ 'Hypertext' => true,
+ 'List' => true,
+ 'NonXMLCommonAttributes' => true,
+ 'XMLCommonAttributes' => true,
+ 'CommonAttributes' => true,
+)
+--DESCRIPTION--
+
+<p>
+ Certain modularized doctypes (XHTML, namely), have certain modules
+ that must be included for the doctype to be an conforming document
+ type: put those modules here. By default, XHTML's core modules
+ are used. You can set this to a blank array to disable core module
+ protection, but this is not recommended.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.CustomDoctype
+TYPE: string/null
+VERSION: 2.0.1
+DEFAULT: NULL
+--DESCRIPTION--
+
+A custom doctype for power-users who defined there own document
+type. This directive only applies when %HTML.Doctype is blank.
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.DefinitionID
+TYPE: string/null
+DEFAULT: NULL
+VERSION: 2.0.0
+--DESCRIPTION--
+
+<p>
+ Unique identifier for a custom-built HTML definition. If you edit
+ the raw version of the HTMLDefinition, introducing changes that the
+ configuration object does not reflect, you must specify this variable.
+ If you change your custom edits, you should change this directive, or
+ clear your cache. Example:
+</p>
+<pre>
+$config = HTMLPurifier_Config::createDefault();
+$config->set('HTML', 'DefinitionID', '1');
+$def = $config->getHTMLDefinition();
+$def->addAttribute('a', 'tabindex', 'Number');
+</pre>
+<p>
+ In the above example, the configuration is still at the defaults, but
+ using the advanced API, an extra attribute has been added. The
+ configuration object normally has no way of knowing that this change
+ has taken place, so it needs an extra directive: %HTML.DefinitionID.
+ If someone else attempts to use the default configuration, these two
+ pieces of code will not clobber each other in the cache, since one has
+ an extra directive attached to it.
+</p>
+<p>
+ You <em>must</em> specify a value to this directive to use the
+ advanced API features.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.DefinitionRev
+TYPE: int
+VERSION: 2.0.0
+DEFAULT: 1
+--DESCRIPTION--
+
+<p>
+ Revision identifier for your custom definition specified in
+ %HTML.DefinitionID. This serves the same purpose: uniquely identifying
+ your custom definition, but this one does so in a chronological
+ context: revision 3 is more up-to-date then revision 2. Thus, when
+ this gets incremented, the cache handling is smart enough to clean
+ up any older revisions of your definition as well as flush the
+ cache.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.Doctype
+TYPE: string/null
+DEFAULT: NULL
+--DESCRIPTION--
+Doctype to use during filtering. Technically speaking this is not actually
+a doctype (as it does not identify a corresponding DTD), but we are using
+this name for sake of simplicity. When non-blank, this will override any
+older directives like %HTML.XHTML or %HTML.Strict.
+--ALLOWED--
+'HTML 4.01 Transitional', 'HTML 4.01 Strict', 'XHTML 1.0 Transitional', 'XHTML 1.0 Strict', 'XHTML 1.1'
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.ForbiddenAttributes
+TYPE: lookup
+VERSION: 3.1.0
+DEFAULT: array()
+--DESCRIPTION--
+<p>
+ While this directive is similar to %HTML.AllowedAttributes, for
+ forwards-compatibility with XML, this attribute has a different syntax. Instead of
+ <code>tag.attr</code>, use <code>tag@attr</code>. To disallow <code>href</code>
+ attributes in <code>a</code> tags, set this directive to
+ <code>a@href</code>. You can also disallow an attribute globally with
+ <code>attr</code> or <code>*@attr</code> (either syntax is fine; the latter
+ is provided for consistency with %HTML.AllowedAttributes).
+</p>
+<p>
+ <strong>Warning:</strong> This directive complements %HTML.ForbiddenElements,
+ accordingly, check
+ out that directive for a discussion of why you
+ should think twice before using this directive.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.ForbiddenElements
+TYPE: lookup
+VERSION: 3.1.0
+DEFAULT: array()
+--DESCRIPTION--
+<p>
+ This was, perhaps, the most requested feature ever in HTML
+ Purifier. Please don't abuse it! This is the logical inverse of
+ %HTML.AllowedElements, and it will override that directive, or any
+ other directive.
+</p>
+<p>
+ If possible, %HTML.Allowed is recommended over this directive, because it
+ can sometimes be difficult to tell whether or not you've forbidden all of
+ the behavior you would like to disallow. If you forbid <code>img</code>
+ with the expectation of preventing images on your site, you'll be in for
+ a nasty surprise when people start using the <code>background-image</code>
+ CSS property.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.MaxImgLength
+TYPE: int/null
+DEFAULT: 1200
+VERSION: 3.1.1
+--DESCRIPTION--
+<p>
+ This directive controls the maximum number of pixels in the width and
+ height attributes in <code>img</code> tags. This is
+ in place to prevent imagecrash attacks, disable with null at your own risk.
+ This directive is similar to %CSS.MaxImgLength, and both should be
+ concurrently edited, although there are
+ subtle differences in the input format (the HTML max is an integer).
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.Parent
+TYPE: string
+VERSION: 1.3.0
+DEFAULT: 'div'
+--DESCRIPTION--
+
+<p>
+ String name of element that HTML fragment passed to library will be
+ inserted in. An interesting variation would be using span as the
+ parent element, meaning that only inline tags would be allowed.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.Proprietary
+TYPE: bool
+VERSION: 3.1.0
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ Whether or not to allow proprietary elements and attributes in your
+ documents, as per <code>HTMLPurifier_HTMLModule_Proprietary</code>.
+ <strong>Warning:</strong> This can cause your documents to stop
+ validating!
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.SafeEmbed
+TYPE: bool
+VERSION: 3.1.1
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ Whether or not to permit embed tags in documents, with a number of extra
+ security features added to prevent script execution. This is similar to
+ what websites like MySpace do to embed tags. Embed is a proprietary
+ element and will cause your website to stop validating. You probably want
+ to enable this with %HTML.SafeObject.
+ <strong>Highly experimental.</strong>
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.SafeObject
+TYPE: bool
+VERSION: 3.1.1
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ Whether or not to permit object tags in documents, with a number of extra
+ security features added to prevent script execution. This is similar to
+ what websites like MySpace do to object tags. You may also want to
+ enable %HTML.SafeEmbed for maximum interoperability with Internet Explorer,
+ although embed tags will cause your website to stop validating.
+ <strong>Highly experimental.</strong>
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.Strict
+TYPE: bool
+VERSION: 1.3.0
+DEFAULT: false
+DEPRECATED-VERSION: 1.7.0
+DEPRECATED-USE: HTML.Doctype
+--DESCRIPTION--
+Determines whether or not to use Transitional (loose) or Strict rulesets.
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.TidyAdd
+TYPE: lookup
+VERSION: 2.0.0
+DEFAULT: array()
+--DESCRIPTION--
+
+Fixes to add to the default set of Tidy fixes as per your level.
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.TidyLevel
+TYPE: string
+VERSION: 2.0.0
+DEFAULT: 'medium'
+--DESCRIPTION--
+
+<p>General level of cleanliness the Tidy module should enforce.
+There are four allowed values:</p>
+<dl>
+ <dt>none</dt>
+ <dd>No extra tidying should be done</dd>
+ <dt>light</dt>
+ <dd>Only fix elements that would be discarded otherwise due to
+ lack of support in doctype</dd>
+ <dt>medium</dt>
+ <dd>Enforce best practices</dd>
+ <dt>heavy</dt>
+ <dd>Transform all deprecated elements and attributes to standards
+ compliant equivalents</dd>
+</dl>
+
+--ALLOWED--
+'none', 'light', 'medium', 'heavy'
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.TidyRemove
+TYPE: lookup
+VERSION: 2.0.0
+DEFAULT: array()
+--DESCRIPTION--
+
+Fixes to remove from the default set of Tidy fixes as per your level.
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.Trusted
+TYPE: bool
+VERSION: 2.0.0
+DEFAULT: false
+--DESCRIPTION--
+Indicates whether or not the user input is trusted or not. If the input is
+trusted, a more expansive set of allowed tags and attributes will be used.
+--# vim: et sw=4 sts=4
--- /dev/null
+HTML.XHTML
+TYPE: bool
+DEFAULT: true
+VERSION: 1.1.0
+DEPRECATED-VERSION: 1.7.0
+DEPRECATED-USE: HTML.Doctype
+--DESCRIPTION--
+Determines whether or not output is XHTML 1.0 or HTML 4.01 flavor.
+--ALIASES--
+Core.XHTML
+--# vim: et sw=4 sts=4
--- /dev/null
+Output.CommentScriptContents
+TYPE: bool
+VERSION: 2.0.0
+DEFAULT: true
+--DESCRIPTION--
+Determines whether or not HTML Purifier should attempt to fix up the
+contents of script tags for legacy browsers with comments.
+--ALIASES--
+Core.CommentScriptContents
+--# vim: et sw=4 sts=4
--- /dev/null
+Output.Newline
+TYPE: string/null
+VERSION: 2.0.1
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ Newline string to format final output with. If left null, HTML Purifier
+ will auto-detect the default newline type of the system and use that;
+ you can manually override it here. Remember, \r\n is Windows, \r
+ is Mac, and \n is Unix.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Output.SortAttr
+TYPE: bool
+VERSION: 3.2.0
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ If true, HTML Purifier will sort attributes by name before writing them back
+ to the document, converting a tag like: <code><el b="" a="" c="" /></code>
+ to <code><el a="" b="" c="" /></code>. This is a workaround for
+ a bug in FCKeditor which causes it to swap attributes order, adding noise
+ to text diffs. If you're not seeing this bug, chances are, you don't need
+ this directive.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+Output.TidyFormat
+TYPE: bool
+VERSION: 1.1.1
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ Determines whether or not to run Tidy on the final output for pretty
+ formatting reasons, such as indentation and wrap.
+</p>
+<p>
+ This can greatly improve readability for editors who are hand-editing
+ the HTML, but is by no means necessary as HTML Purifier has already
+ fixed all major errors the HTML may have had. Tidy is a non-default
+ extension, and this directive will silently fail if Tidy is not
+ available.
+</p>
+<p>
+ If you are looking to make the overall look of your page's source
+ better, I recommend running Tidy on the entire page rather than just
+ user-content (after all, the indentation relative to the containing
+ blocks will be incorrect).
+</p>
+--ALIASES--
+Core.TidyFormat
+--# vim: et sw=4 sts=4
--- /dev/null
+Test.ForceNoIconv
+TYPE: bool
+DEFAULT: false
+--DESCRIPTION--
+When set to true, HTMLPurifier_Encoder will act as if iconv does not exist
+and use only pure PHP implementations.
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.AllowedSchemes
+TYPE: lookup
+--DEFAULT--
+array (
+ 'http' => true,
+ 'https' => true,
+ 'mailto' => true,
+ 'ftp' => true,
+ 'nntp' => true,
+ 'news' => true,
+)
+--DESCRIPTION--
+Whitelist that defines the schemes that a URI is allowed to have. This
+prevents XSS attacks from using pseudo-schemes like javascript or mocha.
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.Base
+TYPE: string/null
+VERSION: 2.1.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ The base URI is the URI of the document this purified HTML will be
+ inserted into. This information is important if HTML Purifier needs
+ to calculate absolute URIs from relative URIs, such as when %URI.MakeAbsolute
+ is on. You may use a non-absolute URI for this value, but behavior
+ may vary (%URI.MakeAbsolute deals nicely with both absolute and
+ relative paths, but forwards-compatibility is not guaranteed).
+ <strong>Warning:</strong> If set, the scheme on this URI
+ overrides the one specified by %URI.DefaultScheme.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.DefaultScheme
+TYPE: string
+DEFAULT: 'http'
+--DESCRIPTION--
+
+<p>
+ Defines through what scheme the output will be served, in order to
+ select the proper object validator when no scheme information is present.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.DefinitionID
+TYPE: string/null
+VERSION: 2.1.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ Unique identifier for a custom-built URI definition. If you want
+ to add custom URIFilters, you must specify this value.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.DefinitionRev
+TYPE: int
+VERSION: 2.1.0
+DEFAULT: 1
+--DESCRIPTION--
+
+<p>
+ Revision identifier for your custom definition. See
+ %HTML.DefinitionRev for details.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.Disable
+TYPE: bool
+VERSION: 1.3.0
+DEFAULT: false
+--DESCRIPTION--
+
+<p>
+ Disables all URIs in all forms. Not sure why you'd want to do that
+ (after all, the Internet's founded on the notion of a hyperlink).
+</p>
+
+--ALIASES--
+Attr.DisableURI
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.DisableExternal
+TYPE: bool
+VERSION: 1.2.0
+DEFAULT: false
+--DESCRIPTION--
+Disables links to external websites. This is a highly effective anti-spam
+and anti-pagerank-leech measure, but comes at a hefty price: nolinks or
+images outside of your domain will be allowed. Non-linkified URIs will
+still be preserved. If you want to be able to link to subdomains or use
+absolute URIs, specify %URI.Host for your website.
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.DisableExternalResources
+TYPE: bool
+VERSION: 1.3.0
+DEFAULT: false
+--DESCRIPTION--
+Disables the embedding of external resources, preventing users from
+embedding things like images from other hosts. This prevents access
+tracking (good for email viewers), bandwidth leeching, cross-site request
+forging, goatse.cx posting, and other nasties, but also results in a loss
+of end-user functionality (they can't directly post a pic they posted from
+Flickr anymore). Use it if you don't have a robust user-content moderation
+team.
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.DisableResources
+TYPE: bool
+VERSION: 1.3.0
+DEFAULT: false
+--DESCRIPTION--
+
+<p>
+ Disables embedding resources, essentially meaning no pictures. You can
+ still link to them though. See %URI.DisableExternalResources for why
+ this might be a good idea.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.Host
+TYPE: string/null
+VERSION: 1.2.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ Defines the domain name of the server, so we can determine whether or
+ an absolute URI is from your website or not. Not strictly necessary,
+ as users should be using relative URIs to reference resources on your
+ website. It will, however, let you use absolute URIs to link to
+ subdomains of the domain you post here: i.e. example.com will allow
+ sub.example.com. However, higher up domains will still be excluded:
+ if you set %URI.Host to sub.example.com, example.com will be blocked.
+ <strong>Note:</strong> This directive overrides %URI.Base because
+ a given page may be on a sub-domain, but you wish HTML Purifier to be
+ more relaxed and allow some of the parent domains too.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.HostBlacklist
+TYPE: list
+VERSION: 1.3.0
+DEFAULT: array()
+--DESCRIPTION--
+List of strings that are forbidden in the host of any URI. Use it to kill
+domain names of spam, etc. Note that it will catch anything in the domain,
+so <tt>moo.com</tt> will catch <tt>moo.com.example.com</tt>.
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.MakeAbsolute
+TYPE: bool
+VERSION: 2.1.0
+DEFAULT: false
+--DESCRIPTION--
+
+<p>
+ Converts all URIs into absolute forms. This is useful when the HTML
+ being filtered assumes a specific base path, but will actually be
+ viewed in a different context (and setting an alternate base URI is
+ not possible). %URI.Base must be set for this directive to work.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.Munge
+TYPE: string/null
+VERSION: 1.3.0
+DEFAULT: NULL
+--DESCRIPTION--
+
+<p>
+ Munges all browsable (usually http, https and ftp)
+ absolute URIs into another URI, usually a URI redirection service.
+ This directive accepts a URI, formatted with a <code>%s</code> where
+ the url-encoded original URI should be inserted (sample:
+ <code>http://www.google.com/url?q=%s</code>).
+</p>
+<p>
+ Uses for this directive:
+</p>
+<ul>
+ <li>
+ Prevent PageRank leaks, while being fairly transparent
+ to users (you may also want to add some client side JavaScript to
+ override the text in the statusbar). <strong>Notice</strong>:
+ Many security experts believe that this form of protection does not deter spam-bots.
+ </li>
+ <li>
+ Redirect users to a splash page telling them they are leaving your
+ website. While this is poor usability practice, it is often mandated
+ in corporate environments.
+ </li>
+</ul>
+<p>
+ Prior to HTML Purifier 3.1.1, this directive also enabled the munging
+ of browsable external resources, which could break things if your redirection
+ script was a splash page or used <code>meta</code> tags. To revert to
+ previous behavior, please use %URI.MungeResources.
+</p>
+<p>
+ You may want to also use %URI.MungeSecretKey along with this directive
+ in order to enforce what URIs your redirector script allows. Open
+ redirector scripts can be a security risk and negatively affect the
+ reputation of your domain name.
+</p>
+<p>
+ Starting with HTML Purifier 3.1.1, there is also these substitutions:
+</p>
+<table>
+ <thead>
+ <tr>
+ <th>Key</th>
+ <th>Description</th>
+ <th>Example <code><a href=""></code></th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>%r</td>
+ <td>1 - The URI embeds a resource<br />(blank) - The URI is merely a link</td>
+ <td></td>
+ </tr>
+ <tr>
+ <td>%n</td>
+ <td>The name of the tag this URI came from</td>
+ <td>a</td>
+ </tr>
+ <tr>
+ <td>%m</td>
+ <td>The name of the attribute this URI came from</td>
+ <td>href</td>
+ </tr>
+ <tr>
+ <td>%p</td>
+ <td>The name of the CSS property this URI came from, or blank if irrelevant</td>
+ <td></td>
+ </tr>
+ </tbody>
+</table>
+<p>
+ Admittedly, these letters are somewhat arbitrary; the only stipulation
+ was that they couldn't be a through f. r is for resource (I would have preferred
+ e, but you take what you can get), n is for name, m
+ was picked because it came after n (and I couldn't use a), p is for
+ property.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.MungeResources
+TYPE: bool
+VERSION: 3.1.1
+DEFAULT: false
+--DESCRIPTION--
+<p>
+ If true, any URI munging directives like %URI.Munge
+ will also apply to embedded resources, such as <code><img src=""></code>.
+ Be careful enabling this directive if you have a redirector script
+ that does not use the <code>Location</code> HTTP header; all of your images
+ and other embedded resources will break.
+</p>
+<p>
+ <strong>Warning:</strong> It is strongly advised you use this in conjunction
+ %URI.MungeSecretKey to mitigate the security risk of an open redirector.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.MungeSecretKey
+TYPE: string/null
+VERSION: 3.1.1
+DEFAULT: NULL
+--DESCRIPTION--
+<p>
+ This directive enables secure checksum generation along with %URI.Munge.
+ It should be set to a secure key that is not shared with anyone else.
+ The checksum can be placed in the URI using %t. Use of this checksum
+ affords an additional level of protection by allowing a redirector
+ to check if a URI has passed through HTML Purifier with this line:
+</p>
+
+<pre>$checksum === sha1($secret_key . ':' . $url)</pre>
+
+<p>
+ If the output is TRUE, the redirector script should accept the URI.
+</p>
+
+<p>
+ Please note that it would still be possible for an attacker to procure
+ secure hashes en-mass by abusing your website's Preview feature or the
+ like, but this service affords an additional level of protection
+ that should be combined with website blacklisting.
+</p>
+
+<p>
+ Remember this has no effect if %URI.Munge is not on.
+</p>
+--# vim: et sw=4 sts=4
--- /dev/null
+URI.OverrideAllowedSchemes
+TYPE: bool
+DEFAULT: true
+--DESCRIPTION--
+If this is set to true (which it is by default), you can override
+%URI.AllowedSchemes by simply registering a HTMLPurifier_URIScheme to the
+registry. If false, you will also have to update that directive in order
+to add more schemes.
+--# vim: et sw=4 sts=4
--- /dev/null
+name = "HTML Purifier"
+
+; vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * @todo Unit test
+ */
+class HTMLPurifier_ContentSets
+{
+
+ /**
+ * List of content set strings (pipe seperators) indexed by name.
+ */
+ public $info = array();
+
+ /**
+ * List of content set lookups (element => true) indexed by name.
+ * @note This is in HTMLPurifier_HTMLDefinition->info_content_sets
+ */
+ public $lookup = array();
+
+ /**
+ * Synchronized list of defined content sets (keys of info)
+ */
+ protected $keys = array();
+ /**
+ * Synchronized list of defined content values (values of info)
+ */
+ protected $values = array();
+
+ /**
+ * Merges in module's content sets, expands identifiers in the content
+ * sets and populates the keys, values and lookup member variables.
+ * @param $modules List of HTMLPurifier_HTMLModule
+ */
+ public function __construct($modules) {
+ if (!is_array($modules)) $modules = array($modules);
+ // populate content_sets based on module hints
+ // sorry, no way of overloading
+ foreach ($modules as $module_i => $module) {
+ foreach ($module->content_sets as $key => $value) {
+ $temp = $this->convertToLookup($value);
+ if (isset($this->lookup[$key])) {
+ // add it into the existing content set
+ $this->lookup[$key] = array_merge($this->lookup[$key], $temp);
+ } else {
+ $this->lookup[$key] = $temp;
+ }
+ }
+ }
+ $old_lookup = false;
+ while ($old_lookup !== $this->lookup) {
+ $old_lookup = $this->lookup;
+ foreach ($this->lookup as $i => $set) {
+ $add = array();
+ foreach ($set as $element => $x) {
+ if (isset($this->lookup[$element])) {
+ $add += $this->lookup[$element];
+ unset($this->lookup[$i][$element]);
+ }
+ }
+ $this->lookup[$i] += $add;
+ }
+ }
+
+ foreach ($this->lookup as $key => $lookup) {
+ $this->info[$key] = implode(' | ', array_keys($lookup));
+ }
+ $this->keys = array_keys($this->info);
+ $this->values = array_values($this->info);
+ }
+
+ /**
+ * Accepts a definition; generates and assigns a ChildDef for it
+ * @param $def HTMLPurifier_ElementDef reference
+ * @param $module Module that defined the ElementDef
+ */
+ public function generateChildDef(&$def, $module) {
+ if (!empty($def->child)) return; // already done!
+ $content_model = $def->content_model;
+ if (is_string($content_model)) {
+ // Assume that $this->keys is alphanumeric
+ $def->content_model = preg_replace_callback(
+ '/\b(' . implode('|', $this->keys) . ')\b/',
+ array($this, 'generateChildDefCallback'),
+ $content_model
+ );
+ //$def->content_model = str_replace(
+ // $this->keys, $this->values, $content_model);
+ }
+ $def->child = $this->getChildDef($def, $module);
+ }
+
+ public function generateChildDefCallback($matches) {
+ return $this->info[$matches[0]];
+ }
+
+ /**
+ * Instantiates a ChildDef based on content_model and content_model_type
+ * member variables in HTMLPurifier_ElementDef
+ * @note This will also defer to modules for custom HTMLPurifier_ChildDef
+ * subclasses that need content set expansion
+ * @param $def HTMLPurifier_ElementDef to have ChildDef extracted
+ * @return HTMLPurifier_ChildDef corresponding to ElementDef
+ */
+ public function getChildDef($def, $module) {
+ $value = $def->content_model;
+ if (is_object($value)) {
+ trigger_error(
+ 'Literal object child definitions should be stored in '.
+ 'ElementDef->child not ElementDef->content_model',
+ E_USER_NOTICE
+ );
+ return $value;
+ }
+ switch ($def->content_model_type) {
+ case 'required':
+ return new HTMLPurifier_ChildDef_Required($value);
+ case 'optional':
+ return new HTMLPurifier_ChildDef_Optional($value);
+ case 'empty':
+ return new HTMLPurifier_ChildDef_Empty();
+ case 'custom':
+ return new HTMLPurifier_ChildDef_Custom($value);
+ }
+ // defer to its module
+ $return = false;
+ if ($module->defines_child_def) { // save a func call
+ $return = $module->getChildDef($def);
+ }
+ if ($return !== false) return $return;
+ // error-out
+ trigger_error(
+ 'Could not determine which ChildDef class to instantiate',
+ E_USER_ERROR
+ );
+ return false;
+ }
+
+ /**
+ * Converts a string list of elements separated by pipes into
+ * a lookup array.
+ * @param $string List of elements
+ * @return Lookup array of elements
+ */
+ protected function convertToLookup($string) {
+ $array = explode('|', str_replace(' ', '', $string));
+ $ret = array();
+ foreach ($array as $i => $k) {
+ $ret[$k] = true;
+ }
+ return $ret;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Registry object that contains information about the current context.
+ * @warning Is a bit buggy when variables are set to null: it thinks
+ * they don't exist! So use false instead, please.
+ * @note Since the variables Context deals with may not be objects,
+ * references are very important here! Do not remove!
+ */
+class HTMLPurifier_Context
+{
+
+ /**
+ * Private array that stores the references.
+ */
+ private $_storage = array();
+
+ /**
+ * Registers a variable into the context.
+ * @param $name String name
+ * @param $ref Reference to variable to be registered
+ */
+ public function register($name, &$ref) {
+ if (isset($this->_storage[$name])) {
+ trigger_error("Name $name produces collision, cannot re-register",
+ E_USER_ERROR);
+ return;
+ }
+ $this->_storage[$name] =& $ref;
+ }
+
+ /**
+ * Retrieves a variable reference from the context.
+ * @param $name String name
+ * @param $ignore_error Boolean whether or not to ignore error
+ */
+ public function &get($name, $ignore_error = false) {
+ if (!isset($this->_storage[$name])) {
+ if (!$ignore_error) {
+ trigger_error("Attempted to retrieve non-existent variable $name",
+ E_USER_ERROR);
+ }
+ $var = null; // so we can return by reference
+ return $var;
+ }
+ return $this->_storage[$name];
+ }
+
+ /**
+ * Destorys a variable in the context.
+ * @param $name String name
+ */
+ public function destroy($name) {
+ if (!isset($this->_storage[$name])) {
+ trigger_error("Attempted to destroy non-existent variable $name",
+ E_USER_ERROR);
+ return;
+ }
+ unset($this->_storage[$name]);
+ }
+
+ /**
+ * Checks whether or not the variable exists.
+ * @param $name String name
+ */
+ public function exists($name) {
+ return isset($this->_storage[$name]);
+ }
+
+ /**
+ * Loads a series of variables from an associative array
+ * @param $context_array Assoc array of variables to load
+ */
+ public function loadArray($context_array) {
+ foreach ($context_array as $key => $discard) {
+ $this->register($key, $context_array[$key]);
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Super-class for definition datatype objects, implements serialization
+ * functions for the class.
+ */
+abstract class HTMLPurifier_Definition
+{
+
+ /**
+ * Has setup() been called yet?
+ */
+ public $setup = false;
+
+ /**
+ * What type of definition is it?
+ */
+ public $type;
+
+ /**
+ * Sets up the definition object into the final form, something
+ * not done by the constructor
+ * @param $config HTMLPurifier_Config instance
+ */
+ abstract protected function doSetup($config);
+
+ /**
+ * Setup function that aborts if already setup
+ * @param $config HTMLPurifier_Config instance
+ */
+ public function setup($config) {
+ if ($this->setup) return;
+ $this->setup = true;
+ $this->doSetup($config);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Abstract class representing Definition cache managers that implements
+ * useful common methods and is a factory.
+ * @todo Create a separate maintenance file advanced users can use to
+ * cache their custom HTMLDefinition, which can be loaded
+ * via a configuration directive
+ * @todo Implement memcached
+ */
+abstract class HTMLPurifier_DefinitionCache
+{
+
+ public $type;
+
+ /**
+ * @param $name Type of definition objects this instance of the
+ * cache will handle.
+ */
+ public function __construct($type) {
+ $this->type = $type;
+ }
+
+ /**
+ * Generates a unique identifier for a particular configuration
+ * @param Instance of HTMLPurifier_Config
+ */
+ public function generateKey($config) {
+ return $config->version . ',' . // possibly replace with function calls
+ $config->getBatchSerial($this->type) . ',' .
+ $config->get($this->type . '.DefinitionRev');
+ }
+
+ /**
+ * Tests whether or not a key is old with respect to the configuration's
+ * version and revision number.
+ * @param $key Key to test
+ * @param $config Instance of HTMLPurifier_Config to test against
+ */
+ public function isOld($key, $config) {
+ if (substr_count($key, ',') < 2) return true;
+ list($version, $hash, $revision) = explode(',', $key, 3);
+ $compare = version_compare($version, $config->version);
+ // version mismatch, is always old
+ if ($compare != 0) return true;
+ // versions match, ids match, check revision number
+ if (
+ $hash == $config->getBatchSerial($this->type) &&
+ $revision < $config->get($this->type . '.DefinitionRev')
+ ) return true;
+ return false;
+ }
+
+ /**
+ * Checks if a definition's type jives with the cache's type
+ * @note Throws an error on failure
+ * @param $def Definition object to check
+ * @return Boolean true if good, false if not
+ */
+ public function checkDefType($def) {
+ if ($def->type !== $this->type) {
+ trigger_error("Cannot use definition of type {$def->type} in cache for {$this->type}");
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * Adds a definition object to the cache
+ */
+ abstract public function add($def, $config);
+
+ /**
+ * Unconditionally saves a definition object to the cache
+ */
+ abstract public function set($def, $config);
+
+ /**
+ * Replace an object in the cache
+ */
+ abstract public function replace($def, $config);
+
+ /**
+ * Retrieves a definition object from the cache
+ */
+ abstract public function get($config);
+
+ /**
+ * Removes a definition object to the cache
+ */
+ abstract public function remove($config);
+
+ /**
+ * Clears all objects from cache
+ */
+ abstract public function flush($config);
+
+ /**
+ * Clears all expired (older version or revision) objects from cache
+ * @note Be carefuly implementing this method as flush. Flush must
+ * not interfere with other Definition types, and cleanup()
+ * should not be repeatedly called by userland code.
+ */
+ abstract public function cleanup($config);
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_DefinitionCache_Decorator extends HTMLPurifier_DefinitionCache
+{
+
+ /**
+ * Cache object we are decorating
+ */
+ public $cache;
+
+ public function __construct() {}
+
+ /**
+ * Lazy decorator function
+ * @param $cache Reference to cache object to decorate
+ */
+ public function decorate(&$cache) {
+ $decorator = $this->copy();
+ // reference is necessary for mocks in PHP 4
+ $decorator->cache =& $cache;
+ $decorator->type = $cache->type;
+ return $decorator;
+ }
+
+ /**
+ * Cross-compatible clone substitute
+ */
+ public function copy() {
+ return new HTMLPurifier_DefinitionCache_Decorator();
+ }
+
+ public function add($def, $config) {
+ return $this->cache->add($def, $config);
+ }
+
+ public function set($def, $config) {
+ return $this->cache->set($def, $config);
+ }
+
+ public function replace($def, $config) {
+ return $this->cache->replace($def, $config);
+ }
+
+ public function get($config) {
+ return $this->cache->get($config);
+ }
+
+ public function remove($config) {
+ return $this->cache->remove($config);
+ }
+
+ public function flush($config) {
+ return $this->cache->flush($config);
+ }
+
+ public function cleanup($config) {
+ return $this->cache->cleanup($config);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Definition cache decorator class that cleans up the cache
+ * whenever there is a cache miss.
+ */
+class HTMLPurifier_DefinitionCache_Decorator_Cleanup extends
+ HTMLPurifier_DefinitionCache_Decorator
+{
+
+ public $name = 'Cleanup';
+
+ public function copy() {
+ return new HTMLPurifier_DefinitionCache_Decorator_Cleanup();
+ }
+
+ public function add($def, $config) {
+ $status = parent::add($def, $config);
+ if (!$status) parent::cleanup($config);
+ return $status;
+ }
+
+ public function set($def, $config) {
+ $status = parent::set($def, $config);
+ if (!$status) parent::cleanup($config);
+ return $status;
+ }
+
+ public function replace($def, $config) {
+ $status = parent::replace($def, $config);
+ if (!$status) parent::cleanup($config);
+ return $status;
+ }
+
+ public function get($config) {
+ $ret = parent::get($config);
+ if (!$ret) parent::cleanup($config);
+ return $ret;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Definition cache decorator class that saves all cache retrievals
+ * to PHP's memory; good for unit tests or circumstances where
+ * there are lots of configuration objects floating around.
+ */
+class HTMLPurifier_DefinitionCache_Decorator_Memory extends
+ HTMLPurifier_DefinitionCache_Decorator
+{
+
+ protected $definitions;
+ public $name = 'Memory';
+
+ public function copy() {
+ return new HTMLPurifier_DefinitionCache_Decorator_Memory();
+ }
+
+ public function add($def, $config) {
+ $status = parent::add($def, $config);
+ if ($status) $this->definitions[$this->generateKey($config)] = $def;
+ return $status;
+ }
+
+ public function set($def, $config) {
+ $status = parent::set($def, $config);
+ if ($status) $this->definitions[$this->generateKey($config)] = $def;
+ return $status;
+ }
+
+ public function replace($def, $config) {
+ $status = parent::replace($def, $config);
+ if ($status) $this->definitions[$this->generateKey($config)] = $def;
+ return $status;
+ }
+
+ public function get($config) {
+ $key = $this->generateKey($config);
+ if (isset($this->definitions[$key])) return $this->definitions[$key];
+ $this->definitions[$key] = parent::get($config);
+ return $this->definitions[$key];
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+require_once 'HTMLPurifier/DefinitionCache/Decorator.php';
+
+/**
+ * Definition cache decorator template.
+ */
+class HTMLPurifier_DefinitionCache_Decorator_Template extends
+ HTMLPurifier_DefinitionCache_Decorator
+{
+
+ var $name = 'Template'; // replace this
+
+ function copy() {
+ // replace class name with yours
+ return new HTMLPurifier_DefinitionCache_Decorator_Template();
+ }
+
+ // remove methods you don't need
+
+ function add($def, $config) {
+ return parent::add($def, $config);
+ }
+
+ function set($def, $config) {
+ return parent::set($def, $config);
+ }
+
+ function replace($def, $config) {
+ return parent::replace($def, $config);
+ }
+
+ function get($config) {
+ return parent::get($config);
+ }
+
+ function flush() {
+ return parent::flush();
+ }
+
+ function cleanup($config) {
+ return parent::cleanup($config);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Null cache object to use when no caching is on.
+ */
+class HTMLPurifier_DefinitionCache_Null extends HTMLPurifier_DefinitionCache
+{
+
+ public function add($def, $config) {
+ return false;
+ }
+
+ public function set($def, $config) {
+ return false;
+ }
+
+ public function replace($def, $config) {
+ return false;
+ }
+
+ public function remove($config) {
+ return false;
+ }
+
+ public function get($config) {
+ return false;
+ }
+
+ public function flush($config) {
+ return false;
+ }
+
+ public function cleanup($config) {
+ return false;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_DefinitionCache_Serializer extends
+ HTMLPurifier_DefinitionCache
+{
+
+ public function add($def, $config) {
+ if (!$this->checkDefType($def)) return;
+ $file = $this->generateFilePath($config);
+ if (file_exists($file)) return false;
+ if (!$this->_prepareDir($config)) return false;
+ return $this->_write($file, serialize($def));
+ }
+
+ public function set($def, $config) {
+ if (!$this->checkDefType($def)) return;
+ $file = $this->generateFilePath($config);
+ if (!$this->_prepareDir($config)) return false;
+ return $this->_write($file, serialize($def));
+ }
+
+ public function replace($def, $config) {
+ if (!$this->checkDefType($def)) return;
+ $file = $this->generateFilePath($config);
+ if (!file_exists($file)) return false;
+ if (!$this->_prepareDir($config)) return false;
+ return $this->_write($file, serialize($def));
+ }
+
+ public function get($config) {
+ $file = $this->generateFilePath($config);
+ if (!file_exists($file)) return false;
+ return unserialize(file_get_contents($file));
+ }
+
+ public function remove($config) {
+ $file = $this->generateFilePath($config);
+ if (!file_exists($file)) return false;
+ return unlink($file);
+ }
+
+ public function flush($config) {
+ if (!$this->_prepareDir($config)) return false;
+ $dir = $this->generateDirectoryPath($config);
+ $dh = opendir($dir);
+ while (false !== ($filename = readdir($dh))) {
+ if (empty($filename)) continue;
+ if ($filename[0] === '.') continue;
+ unlink($dir . '/' . $filename);
+ }
+ }
+
+ public function cleanup($config) {
+ if (!$this->_prepareDir($config)) return false;
+ $dir = $this->generateDirectoryPath($config);
+ $dh = opendir($dir);
+ while (false !== ($filename = readdir($dh))) {
+ if (empty($filename)) continue;
+ if ($filename[0] === '.') continue;
+ $key = substr($filename, 0, strlen($filename) - 4);
+ if ($this->isOld($key, $config)) unlink($dir . '/' . $filename);
+ }
+ }
+
+ /**
+ * Generates the file path to the serial file corresponding to
+ * the configuration and definition name
+ * @todo Make protected
+ */
+ public function generateFilePath($config) {
+ $key = $this->generateKey($config);
+ return $this->generateDirectoryPath($config) . '/' . $key . '.ser';
+ }
+
+ /**
+ * Generates the path to the directory contain this cache's serial files
+ * @note No trailing slash
+ * @todo Make protected
+ */
+ public function generateDirectoryPath($config) {
+ $base = $this->generateBaseDirectoryPath($config);
+ return $base . '/' . $this->type;
+ }
+
+ /**
+ * Generates path to base directory that contains all definition type
+ * serials
+ * @todo Make protected
+ */
+ public function generateBaseDirectoryPath($config) {
+ $base = $config->get('Cache.SerializerPath');
+ $base = is_null($base) ? HTMLPURIFIER_PREFIX . '/HTMLPurifier/DefinitionCache/Serializer' : $base;
+ return $base;
+ }
+
+ /**
+ * Convenience wrapper function for file_put_contents
+ * @param $file File name to write to
+ * @param $data Data to write into file
+ * @return Number of bytes written if success, or false if failure.
+ */
+ private function _write($file, $data) {
+ return file_put_contents($file, $data);
+ }
+
+ /**
+ * Prepares the directory that this type stores the serials in
+ * @return True if successful
+ */
+ private function _prepareDir($config) {
+ $directory = $this->generateDirectoryPath($config);
+ if (!is_dir($directory)) {
+ $base = $this->generateBaseDirectoryPath($config);
+ if (!is_dir($base)) {
+ trigger_error('Base directory '.$base.' does not exist,
+ please create or change using %Cache.SerializerPath',
+ E_USER_WARNING);
+ return false;
+ } elseif (!$this->_testPermissions($base)) {
+ return false;
+ }
+ $old = umask(0022); // disable group and world writes
+ mkdir($directory);
+ umask($old);
+ } elseif (!$this->_testPermissions($directory)) {
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * Tests permissions on a directory and throws out friendly
+ * error messages and attempts to chmod it itself if possible
+ */
+ private function _testPermissions($dir) {
+ // early abort, if it is writable, everything is hunky-dory
+ if (is_writable($dir)) return true;
+ if (!is_dir($dir)) {
+ // generally, you'll want to handle this beforehand
+ // so a more specific error message can be given
+ trigger_error('Directory '.$dir.' does not exist',
+ E_USER_WARNING);
+ return false;
+ }
+ if (function_exists('posix_getuid')) {
+ // POSIX system, we can give more specific advice
+ if (fileowner($dir) === posix_getuid()) {
+ // we can chmod it ourselves
+ chmod($dir, 0755);
+ return true;
+ } elseif (filegroup($dir) === posix_getgid()) {
+ $chmod = '775';
+ } else {
+ // PHP's probably running as nobody, so we'll
+ // need to give global permissions
+ $chmod = '777';
+ }
+ trigger_error('Directory '.$dir.' not writable, '.
+ 'please chmod to ' . $chmod,
+ E_USER_WARNING);
+ } else {
+ // generic error message
+ trigger_error('Directory '.$dir.' not writable, '.
+ 'please alter file permissions',
+ E_USER_WARNING);
+ }
+ return false;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+This is a dummy file to prevent Git from ignoring this empty directory.
+
+ vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Responsible for creating definition caches.
+ */
+class HTMLPurifier_DefinitionCacheFactory
+{
+
+ protected $caches = array('Serializer' => array());
+ protected $implementations = array();
+ protected $decorators = array();
+
+ /**
+ * Initialize default decorators
+ */
+ public function setup() {
+ $this->addDecorator('Cleanup');
+ }
+
+ /**
+ * Retrieves an instance of global definition cache factory.
+ */
+ public static function instance($prototype = null) {
+ static $instance;
+ if ($prototype !== null) {
+ $instance = $prototype;
+ } elseif ($instance === null || $prototype === true) {
+ $instance = new HTMLPurifier_DefinitionCacheFactory();
+ $instance->setup();
+ }
+ return $instance;
+ }
+
+ /**
+ * Registers a new definition cache object
+ * @param $short Short name of cache object, for reference
+ * @param $long Full class name of cache object, for construction
+ */
+ public function register($short, $long) {
+ $this->implementations[$short] = $long;
+ }
+
+ /**
+ * Factory method that creates a cache object based on configuration
+ * @param $name Name of definitions handled by cache
+ * @param $config Instance of HTMLPurifier_Config
+ */
+ public function create($type, $config) {
+ $method = $config->get('Cache.DefinitionImpl');
+ if ($method === null) {
+ return new HTMLPurifier_DefinitionCache_Null($type);
+ }
+ if (!empty($this->caches[$method][$type])) {
+ return $this->caches[$method][$type];
+ }
+ if (
+ isset($this->implementations[$method]) &&
+ class_exists($class = $this->implementations[$method], false)
+ ) {
+ $cache = new $class($type);
+ } else {
+ if ($method != 'Serializer') {
+ trigger_error("Unrecognized DefinitionCache $method, using Serializer instead", E_USER_WARNING);
+ }
+ $cache = new HTMLPurifier_DefinitionCache_Serializer($type);
+ }
+ foreach ($this->decorators as $decorator) {
+ $new_cache = $decorator->decorate($cache);
+ // prevent infinite recursion in PHP 4
+ unset($cache);
+ $cache = $new_cache;
+ }
+ $this->caches[$method][$type] = $cache;
+ return $this->caches[$method][$type];
+ }
+
+ /**
+ * Registers a decorator to add to all new cache objects
+ * @param
+ */
+ public function addDecorator($decorator) {
+ if (is_string($decorator)) {
+ $class = "HTMLPurifier_DefinitionCache_Decorator_$decorator";
+ $decorator = new $class;
+ }
+ $this->decorators[$decorator->name] = $decorator;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Represents a document type, contains information on which modules
+ * need to be loaded.
+ * @note This class is inspected by Printer_HTMLDefinition->renderDoctype.
+ * If structure changes, please update that function.
+ */
+class HTMLPurifier_Doctype
+{
+ /**
+ * Full name of doctype
+ */
+ public $name;
+
+ /**
+ * List of standard modules (string identifiers or literal objects)
+ * that this doctype uses
+ */
+ public $modules = array();
+
+ /**
+ * List of modules to use for tidying up code
+ */
+ public $tidyModules = array();
+
+ /**
+ * Is the language derived from XML (i.e. XHTML)?
+ */
+ public $xml = true;
+
+ /**
+ * List of aliases for this doctype
+ */
+ public $aliases = array();
+
+ /**
+ * Public DTD identifier
+ */
+ public $dtdPublic;
+
+ /**
+ * System DTD identifier
+ */
+ public $dtdSystem;
+
+ public function __construct($name = null, $xml = true, $modules = array(),
+ $tidyModules = array(), $aliases = array(), $dtd_public = null, $dtd_system = null
+ ) {
+ $this->name = $name;
+ $this->xml = $xml;
+ $this->modules = $modules;
+ $this->tidyModules = $tidyModules;
+ $this->aliases = $aliases;
+ $this->dtdPublic = $dtd_public;
+ $this->dtdSystem = $dtd_system;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_DoctypeRegistry
+{
+
+ /**
+ * Hash of doctype names to doctype objects
+ */
+ protected $doctypes;
+
+ /**
+ * Lookup table of aliases to real doctype names
+ */
+ protected $aliases;
+
+ /**
+ * Registers a doctype to the registry
+ * @note Accepts a fully-formed doctype object, or the
+ * parameters for constructing a doctype object
+ * @param $doctype Name of doctype or literal doctype object
+ * @param $modules Modules doctype will load
+ * @param $modules_for_modes Modules doctype will load for certain modes
+ * @param $aliases Alias names for doctype
+ * @return Editable registered doctype
+ */
+ public function register($doctype, $xml = true, $modules = array(),
+ $tidy_modules = array(), $aliases = array(), $dtd_public = null, $dtd_system = null
+ ) {
+ if (!is_array($modules)) $modules = array($modules);
+ if (!is_array($tidy_modules)) $tidy_modules = array($tidy_modules);
+ if (!is_array($aliases)) $aliases = array($aliases);
+ if (!is_object($doctype)) {
+ $doctype = new HTMLPurifier_Doctype(
+ $doctype, $xml, $modules, $tidy_modules, $aliases, $dtd_public, $dtd_system
+ );
+ }
+ $this->doctypes[$doctype->name] = $doctype;
+ $name = $doctype->name;
+ // hookup aliases
+ foreach ($doctype->aliases as $alias) {
+ if (isset($this->doctypes[$alias])) continue;
+ $this->aliases[$alias] = $name;
+ }
+ // remove old aliases
+ if (isset($this->aliases[$name])) unset($this->aliases[$name]);
+ return $doctype;
+ }
+
+ /**
+ * Retrieves reference to a doctype of a certain name
+ * @note This function resolves aliases
+ * @note When possible, use the more fully-featured make()
+ * @param $doctype Name of doctype
+ * @return Editable doctype object
+ */
+ public function get($doctype) {
+ if (isset($this->aliases[$doctype])) $doctype = $this->aliases[$doctype];
+ if (!isset($this->doctypes[$doctype])) {
+ trigger_error('Doctype ' . htmlspecialchars($doctype) . ' does not exist', E_USER_ERROR);
+ $anon = new HTMLPurifier_Doctype($doctype);
+ return $anon;
+ }
+ return $this->doctypes[$doctype];
+ }
+
+ /**
+ * Creates a doctype based on a configuration object,
+ * will perform initialization on the doctype
+ * @note Use this function to get a copy of doctype that config
+ * can hold on to (this is necessary in order to tell
+ * Generator whether or not the current document is XML
+ * based or not).
+ */
+ public function make($config) {
+ return clone $this->get($this->getDoctypeFromConfig($config));
+ }
+
+ /**
+ * Retrieves the doctype from the configuration object
+ */
+ public function getDoctypeFromConfig($config) {
+ // recommended test
+ $doctype = $config->get('HTML.Doctype');
+ if (!empty($doctype)) return $doctype;
+ $doctype = $config->get('HTML.CustomDoctype');
+ if (!empty($doctype)) return $doctype;
+ // backwards-compatibility
+ if ($config->get('HTML.XHTML')) {
+ $doctype = 'XHTML 1.0';
+ } else {
+ $doctype = 'HTML 4.01';
+ }
+ if ($config->get('HTML.Strict')) {
+ $doctype .= ' Strict';
+ } else {
+ $doctype .= ' Transitional';
+ }
+ return $doctype;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Structure that stores an HTML element definition. Used by
+ * HTMLPurifier_HTMLDefinition and HTMLPurifier_HTMLModule.
+ * @note This class is inspected by HTMLPurifier_Printer_HTMLDefinition.
+ * Please update that class too.
+ * @warning If you add new properties to this class, you MUST update
+ * the mergeIn() method.
+ */
+class HTMLPurifier_ElementDef
+{
+
+ /**
+ * Does the definition work by itself, or is it created solely
+ * for the purpose of merging into another definition?
+ */
+ public $standalone = true;
+
+ /**
+ * Associative array of attribute name to HTMLPurifier_AttrDef
+ * @note Before being processed by HTMLPurifier_AttrCollections
+ * when modules are finalized during
+ * HTMLPurifier_HTMLDefinition->setup(), this array may also
+ * contain an array at index 0 that indicates which attribute
+ * collections to load into the full array. It may also
+ * contain string indentifiers in lieu of HTMLPurifier_AttrDef,
+ * see HTMLPurifier_AttrTypes on how they are expanded during
+ * HTMLPurifier_HTMLDefinition->setup() processing.
+ */
+ public $attr = array();
+
+ /**
+ * Indexed list of tag's HTMLPurifier_AttrTransform to be done before validation
+ */
+ public $attr_transform_pre = array();
+
+ /**
+ * Indexed list of tag's HTMLPurifier_AttrTransform to be done after validation
+ */
+ public $attr_transform_post = array();
+
+ /**
+ * HTMLPurifier_ChildDef of this tag.
+ */
+ public $child;
+
+ /**
+ * Abstract string representation of internal ChildDef rules. See
+ * HTMLPurifier_ContentSets for how this is parsed and then transformed
+ * into an HTMLPurifier_ChildDef.
+ * @warning This is a temporary variable that is not available after
+ * being processed by HTMLDefinition
+ */
+ public $content_model;
+
+ /**
+ * Value of $child->type, used to determine which ChildDef to use,
+ * used in combination with $content_model.
+ * @warning This must be lowercase
+ * @warning This is a temporary variable that is not available after
+ * being processed by HTMLDefinition
+ */
+ public $content_model_type;
+
+
+
+ /**
+ * Does the element have a content model (#PCDATA | Inline)*? This
+ * is important for chameleon ins and del processing in
+ * HTMLPurifier_ChildDef_Chameleon. Dynamically set: modules don't
+ * have to worry about this one.
+ */
+ public $descendants_are_inline = false;
+
+ /**
+ * List of the names of required attributes this element has. Dynamically
+ * populated by HTMLPurifier_HTMLDefinition::getElement
+ */
+ public $required_attr = array();
+
+ /**
+ * Lookup table of tags excluded from all descendants of this tag.
+ * @note SGML permits exclusions for all descendants, but this is
+ * not possible with DTDs or XML Schemas. W3C has elected to
+ * use complicated compositions of content_models to simulate
+ * exclusion for children, but we go the simpler, SGML-style
+ * route of flat-out exclusions, which correctly apply to
+ * all descendants and not just children. Note that the XHTML
+ * Modularization Abstract Modules are blithely unaware of such
+ * distinctions.
+ */
+ public $excludes = array();
+
+ /**
+ * This tag is explicitly auto-closed by the following tags.
+ */
+ public $autoclose = array();
+
+ /**
+ * Whether or not this is a formatting element affected by the
+ * "Active Formatting Elements" algorithm.
+ */
+ public $formatting;
+
+ /**
+ * Low-level factory constructor for creating new standalone element defs
+ */
+ public static function create($content_model, $content_model_type, $attr) {
+ $def = new HTMLPurifier_ElementDef();
+ $def->content_model = $content_model;
+ $def->content_model_type = $content_model_type;
+ $def->attr = $attr;
+ return $def;
+ }
+
+ /**
+ * Merges the values of another element definition into this one.
+ * Values from the new element def take precedence if a value is
+ * not mergeable.
+ */
+ public function mergeIn($def) {
+
+ // later keys takes precedence
+ foreach($def->attr as $k => $v) {
+ if ($k === 0) {
+ // merge in the includes
+ // sorry, no way to override an include
+ foreach ($v as $v2) {
+ $this->attr[0][] = $v2;
+ }
+ continue;
+ }
+ if ($v === false) {
+ if (isset($this->attr[$k])) unset($this->attr[$k]);
+ continue;
+ }
+ $this->attr[$k] = $v;
+ }
+ $this->_mergeAssocArray($this->attr_transform_pre, $def->attr_transform_pre);
+ $this->_mergeAssocArray($this->attr_transform_post, $def->attr_transform_post);
+ $this->_mergeAssocArray($this->excludes, $def->excludes);
+
+ if(!empty($def->content_model)) {
+ $this->content_model =
+ str_replace("#SUPER", $this->content_model, $def->content_model);
+ $this->child = false;
+ }
+ if(!empty($def->content_model_type)) {
+ $this->content_model_type = $def->content_model_type;
+ $this->child = false;
+ }
+ if(!is_null($def->child)) $this->child = $def->child;
+ if(!is_null($def->formatting)) $this->formatting = $def->formatting;
+ if($def->descendants_are_inline) $this->descendants_are_inline = $def->descendants_are_inline;
+
+ }
+
+ /**
+ * Merges one array into another, removes values which equal false
+ * @param $a1 Array by reference that is merged into
+ * @param $a2 Array that merges into $a1
+ */
+ private function _mergeAssocArray(&$a1, $a2) {
+ foreach ($a2 as $k => $v) {
+ if ($v === false) {
+ if (isset($a1[$k])) unset($a1[$k]);
+ continue;
+ }
+ $a1[$k] = $v;
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * A UTF-8 specific character encoder that handles cleaning and transforming.
+ * @note All functions in this class should be static.
+ */
+class HTMLPurifier_Encoder
+{
+
+ /**
+ * Constructor throws fatal error if you attempt to instantiate class
+ */
+ private function __construct() {
+ trigger_error('Cannot instantiate encoder, call methods statically', E_USER_ERROR);
+ }
+
+ /**
+ * Error-handler that mutes errors, alternative to shut-up operator.
+ */
+ public static function muteErrorHandler() {}
+
+ /**
+ * Cleans a UTF-8 string for well-formedness and SGML validity
+ *
+ * It will parse according to UTF-8 and return a valid UTF8 string, with
+ * non-SGML codepoints excluded.
+ *
+ * @note Just for reference, the non-SGML code points are 0 to 31 and
+ * 127 to 159, inclusive. However, we allow code points 9, 10
+ * and 13, which are the tab, line feed and carriage return
+ * respectively. 128 and above the code points map to multibyte
+ * UTF-8 representations.
+ *
+ * @note Fallback code adapted from utf8ToUnicode by Henri Sivonen and
+ * hsivonen@iki.fi at <http://iki.fi/hsivonen/php-utf8/> under the
+ * LGPL license. Notes on what changed are inside, but in general,
+ * the original code transformed UTF-8 text into an array of integer
+ * Unicode codepoints. Understandably, transforming that back to
+ * a string would be somewhat expensive, so the function was modded to
+ * directly operate on the string. However, this discourages code
+ * reuse, and the logic enumerated here would be useful for any
+ * function that needs to be able to understand UTF-8 characters.
+ * As of right now, only smart lossless character encoding converters
+ * would need that, and I'm probably not going to implement them.
+ * Once again, PHP 6 should solve all our problems.
+ */
+ public static function cleanUTF8($str, $force_php = false) {
+
+ // UTF-8 validity is checked since PHP 4.3.5
+ // This is an optimization: if the string is already valid UTF-8, no
+ // need to do PHP stuff. 99% of the time, this will be the case.
+ // The regexp matches the XML char production, as well as well as excluding
+ // non-SGML codepoints U+007F to U+009F
+ if (preg_match('/^[\x{9}\x{A}\x{D}\x{20}-\x{7E}\x{A0}-\x{D7FF}\x{E000}-\x{FFFD}\x{10000}-\x{10FFFF}]*$/Du', $str)) {
+ return $str;
+ }
+
+ $mState = 0; // cached expected number of octets after the current octet
+ // until the beginning of the next UTF8 character sequence
+ $mUcs4 = 0; // cached Unicode character
+ $mBytes = 1; // cached expected number of octets in the current sequence
+
+ // original code involved an $out that was an array of Unicode
+ // codepoints. Instead of having to convert back into UTF-8, we've
+ // decided to directly append valid UTF-8 characters onto a string
+ // $out once they're done. $char accumulates raw bytes, while $mUcs4
+ // turns into the Unicode code point, so there's some redundancy.
+
+ $out = '';
+ $char = '';
+
+ $len = strlen($str);
+ for($i = 0; $i < $len; $i++) {
+ $in = ord($str{$i});
+ $char .= $str[$i]; // append byte to char
+ if (0 == $mState) {
+ // When mState is zero we expect either a US-ASCII character
+ // or a multi-octet sequence.
+ if (0 == (0x80 & ($in))) {
+ // US-ASCII, pass straight through.
+ if (($in <= 31 || $in == 127) &&
+ !($in == 9 || $in == 13 || $in == 10) // save \r\t\n
+ ) {
+ // control characters, remove
+ } else {
+ $out .= $char;
+ }
+ // reset
+ $char = '';
+ $mBytes = 1;
+ } elseif (0xC0 == (0xE0 & ($in))) {
+ // First octet of 2 octet sequence
+ $mUcs4 = ($in);
+ $mUcs4 = ($mUcs4 & 0x1F) << 6;
+ $mState = 1;
+ $mBytes = 2;
+ } elseif (0xE0 == (0xF0 & ($in))) {
+ // First octet of 3 octet sequence
+ $mUcs4 = ($in);
+ $mUcs4 = ($mUcs4 & 0x0F) << 12;
+ $mState = 2;
+ $mBytes = 3;
+ } elseif (0xF0 == (0xF8 & ($in))) {
+ // First octet of 4 octet sequence
+ $mUcs4 = ($in);
+ $mUcs4 = ($mUcs4 & 0x07) << 18;
+ $mState = 3;
+ $mBytes = 4;
+ } elseif (0xF8 == (0xFC & ($in))) {
+ // First octet of 5 octet sequence.
+ //
+ // This is illegal because the encoded codepoint must be
+ // either:
+ // (a) not the shortest form or
+ // (b) outside the Unicode range of 0-0x10FFFF.
+ // Rather than trying to resynchronize, we will carry on
+ // until the end of the sequence and let the later error
+ // handling code catch it.
+ $mUcs4 = ($in);
+ $mUcs4 = ($mUcs4 & 0x03) << 24;
+ $mState = 4;
+ $mBytes = 5;
+ } elseif (0xFC == (0xFE & ($in))) {
+ // First octet of 6 octet sequence, see comments for 5
+ // octet sequence.
+ $mUcs4 = ($in);
+ $mUcs4 = ($mUcs4 & 1) << 30;
+ $mState = 5;
+ $mBytes = 6;
+ } else {
+ // Current octet is neither in the US-ASCII range nor a
+ // legal first octet of a multi-octet sequence.
+ $mState = 0;
+ $mUcs4 = 0;
+ $mBytes = 1;
+ $char = '';
+ }
+ } else {
+ // When mState is non-zero, we expect a continuation of the
+ // multi-octet sequence
+ if (0x80 == (0xC0 & ($in))) {
+ // Legal continuation.
+ $shift = ($mState - 1) * 6;
+ $tmp = $in;
+ $tmp = ($tmp & 0x0000003F) << $shift;
+ $mUcs4 |= $tmp;
+
+ if (0 == --$mState) {
+ // End of the multi-octet sequence. mUcs4 now contains
+ // the final Unicode codepoint to be output
+
+ // Check for illegal sequences and codepoints.
+
+ // From Unicode 3.1, non-shortest form is illegal
+ if (((2 == $mBytes) && ($mUcs4 < 0x0080)) ||
+ ((3 == $mBytes) && ($mUcs4 < 0x0800)) ||
+ ((4 == $mBytes) && ($mUcs4 < 0x10000)) ||
+ (4 < $mBytes) ||
+ // From Unicode 3.2, surrogate characters = illegal
+ (($mUcs4 & 0xFFFFF800) == 0xD800) ||
+ // Codepoints outside the Unicode range are illegal
+ ($mUcs4 > 0x10FFFF)
+ ) {
+
+ } elseif (0xFEFF != $mUcs4 && // omit BOM
+ // check for valid Char unicode codepoints
+ (
+ 0x9 == $mUcs4 ||
+ 0xA == $mUcs4 ||
+ 0xD == $mUcs4 ||
+ (0x20 <= $mUcs4 && 0x7E >= $mUcs4) ||
+ // 7F-9F is not strictly prohibited by XML,
+ // but it is non-SGML, and thus we don't allow it
+ (0xA0 <= $mUcs4 && 0xD7FF >= $mUcs4) ||
+ (0x10000 <= $mUcs4 && 0x10FFFF >= $mUcs4)
+ )
+ ) {
+ $out .= $char;
+ }
+ // initialize UTF8 cache (reset)
+ $mState = 0;
+ $mUcs4 = 0;
+ $mBytes = 1;
+ $char = '';
+ }
+ } else {
+ // ((0xC0 & (*in) != 0x80) && (mState != 0))
+ // Incomplete multi-octet sequence.
+ // used to result in complete fail, but we'll reset
+ $mState = 0;
+ $mUcs4 = 0;
+ $mBytes = 1;
+ $char ='';
+ }
+ }
+ }
+ return $out;
+ }
+
+ /**
+ * Translates a Unicode codepoint into its corresponding UTF-8 character.
+ * @note Based on Feyd's function at
+ * <http://forums.devnetwork.net/viewtopic.php?p=191404#191404>,
+ * which is in public domain.
+ * @note While we're going to do code point parsing anyway, a good
+ * optimization would be to refuse to translate code points that
+ * are non-SGML characters. However, this could lead to duplication.
+ * @note This is very similar to the unichr function in
+ * maintenance/generate-entity-file.php (although this is superior,
+ * due to its sanity checks).
+ */
+
+ // +----------+----------+----------+----------+
+ // | 33222222 | 22221111 | 111111 | |
+ // | 10987654 | 32109876 | 54321098 | 76543210 | bit
+ // +----------+----------+----------+----------+
+ // | | | | 0xxxxxxx | 1 byte 0x00000000..0x0000007F
+ // | | | 110yyyyy | 10xxxxxx | 2 byte 0x00000080..0x000007FF
+ // | | 1110zzzz | 10yyyyyy | 10xxxxxx | 3 byte 0x00000800..0x0000FFFF
+ // | 11110www | 10wwzzzz | 10yyyyyy | 10xxxxxx | 4 byte 0x00010000..0x0010FFFF
+ // +----------+----------+----------+----------+
+ // | 00000000 | 00011111 | 11111111 | 11111111 | Theoretical upper limit of legal scalars: 2097151 (0x001FFFFF)
+ // | 00000000 | 00010000 | 11111111 | 11111111 | Defined upper limit of legal scalar codes
+ // +----------+----------+----------+----------+
+
+ public static function unichr($code) {
+ if($code > 1114111 or $code < 0 or
+ ($code >= 55296 and $code <= 57343) ) {
+ // bits are set outside the "valid" range as defined
+ // by UNICODE 4.1.0
+ return '';
+ }
+
+ $x = $y = $z = $w = 0;
+ if ($code < 128) {
+ // regular ASCII character
+ $x = $code;
+ } else {
+ // set up bits for UTF-8
+ $x = ($code & 63) | 128;
+ if ($code < 2048) {
+ $y = (($code & 2047) >> 6) | 192;
+ } else {
+ $y = (($code & 4032) >> 6) | 128;
+ if($code < 65536) {
+ $z = (($code >> 12) & 15) | 224;
+ } else {
+ $z = (($code >> 12) & 63) | 128;
+ $w = (($code >> 18) & 7) | 240;
+ }
+ }
+ }
+ // set up the actual character
+ $ret = '';
+ if($w) $ret .= chr($w);
+ if($z) $ret .= chr($z);
+ if($y) $ret .= chr($y);
+ $ret .= chr($x);
+
+ return $ret;
+ }
+
+ /**
+ * Converts a string to UTF-8 based on configuration.
+ */
+ public static function convertToUTF8($str, $config, $context) {
+ $encoding = $config->get('Core.Encoding');
+ if ($encoding === 'utf-8') return $str;
+ static $iconv = null;
+ if ($iconv === null) $iconv = function_exists('iconv');
+ set_error_handler(array('HTMLPurifier_Encoder', 'muteErrorHandler'));
+ if ($iconv && !$config->get('Test.ForceNoIconv')) {
+ $str = iconv($encoding, 'utf-8//IGNORE', $str);
+ if ($str === false) {
+ // $encoding is not a valid encoding
+ restore_error_handler();
+ trigger_error('Invalid encoding ' . $encoding, E_USER_ERROR);
+ return '';
+ }
+ // If the string is bjorked by Shift_JIS or a similar encoding
+ // that doesn't support all of ASCII, convert the naughty
+ // characters to their true byte-wise ASCII/UTF-8 equivalents.
+ $str = strtr($str, HTMLPurifier_Encoder::testEncodingSupportsASCII($encoding));
+ restore_error_handler();
+ return $str;
+ } elseif ($encoding === 'iso-8859-1') {
+ $str = utf8_encode($str);
+ restore_error_handler();
+ return $str;
+ }
+ trigger_error('Encoding not supported, please install iconv', E_USER_ERROR);
+ }
+
+ /**
+ * Converts a string from UTF-8 based on configuration.
+ * @note Currently, this is a lossy conversion, with unexpressable
+ * characters being omitted.
+ */
+ public static function convertFromUTF8($str, $config, $context) {
+ $encoding = $config->get('Core.Encoding');
+ if ($encoding === 'utf-8') return $str;
+ static $iconv = null;
+ if ($iconv === null) $iconv = function_exists('iconv');
+ if ($escape = $config->get('Core.EscapeNonASCIICharacters')) {
+ $str = HTMLPurifier_Encoder::convertToASCIIDumbLossless($str);
+ }
+ set_error_handler(array('HTMLPurifier_Encoder', 'muteErrorHandler'));
+ if ($iconv && !$config->get('Test.ForceNoIconv')) {
+ // Undo our previous fix in convertToUTF8, otherwise iconv will barf
+ $ascii_fix = HTMLPurifier_Encoder::testEncodingSupportsASCII($encoding);
+ if (!$escape && !empty($ascii_fix)) {
+ $clear_fix = array();
+ foreach ($ascii_fix as $utf8 => $native) $clear_fix[$utf8] = '';
+ $str = strtr($str, $clear_fix);
+ }
+ $str = strtr($str, array_flip($ascii_fix));
+ // Normal stuff
+ $str = iconv('utf-8', $encoding . '//IGNORE', $str);
+ restore_error_handler();
+ return $str;
+ } elseif ($encoding === 'iso-8859-1') {
+ $str = utf8_decode($str);
+ restore_error_handler();
+ return $str;
+ }
+ trigger_error('Encoding not supported', E_USER_ERROR);
+ }
+
+ /**
+ * Lossless (character-wise) conversion of HTML to ASCII
+ * @param $str UTF-8 string to be converted to ASCII
+ * @returns ASCII encoded string with non-ASCII character entity-ized
+ * @warning Adapted from MediaWiki, claiming fair use: this is a common
+ * algorithm. If you disagree with this license fudgery,
+ * implement it yourself.
+ * @note Uses decimal numeric entities since they are best supported.
+ * @note This is a DUMB function: it has no concept of keeping
+ * character entities that the projected character encoding
+ * can allow. We could possibly implement a smart version
+ * but that would require it to also know which Unicode
+ * codepoints the charset supported (not an easy task).
+ * @note Sort of with cleanUTF8() but it assumes that $str is
+ * well-formed UTF-8
+ */
+ public static function convertToASCIIDumbLossless($str) {
+ $bytesleft = 0;
+ $result = '';
+ $working = 0;
+ $len = strlen($str);
+ for( $i = 0; $i < $len; $i++ ) {
+ $bytevalue = ord( $str[$i] );
+ if( $bytevalue <= 0x7F ) { //0xxx xxxx
+ $result .= chr( $bytevalue );
+ $bytesleft = 0;
+ } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
+ $working = $working << 6;
+ $working += ($bytevalue & 0x3F);
+ $bytesleft--;
+ if( $bytesleft <= 0 ) {
+ $result .= "&#" . $working . ";";
+ }
+ } elseif( $bytevalue <= 0xDF ) { //110x xxxx
+ $working = $bytevalue & 0x1F;
+ $bytesleft = 1;
+ } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
+ $working = $bytevalue & 0x0F;
+ $bytesleft = 2;
+ } else { //1111 0xxx
+ $working = $bytevalue & 0x07;
+ $bytesleft = 3;
+ }
+ }
+ return $result;
+ }
+
+ /**
+ * This expensive function tests whether or not a given character
+ * encoding supports ASCII. 7/8-bit encodings like Shift_JIS will
+ * fail this test, and require special processing. Variable width
+ * encodings shouldn't ever fail.
+ *
+ * @param string $encoding Encoding name to test, as per iconv format
+ * @param bool $bypass Whether or not to bypass the precompiled arrays.
+ * @return Array of UTF-8 characters to their corresponding ASCII,
+ * which can be used to "undo" any overzealous iconv action.
+ */
+ public static function testEncodingSupportsASCII($encoding, $bypass = false) {
+ static $encodings = array();
+ if (!$bypass) {
+ if (isset($encodings[$encoding])) return $encodings[$encoding];
+ $lenc = strtolower($encoding);
+ switch ($lenc) {
+ case 'shift_jis':
+ return array("\xC2\xA5" => '\\', "\xE2\x80\xBE" => '~');
+ case 'johab':
+ return array("\xE2\x82\xA9" => '\\');
+ }
+ if (strpos($lenc, 'iso-8859-') === 0) return array();
+ }
+ $ret = array();
+ set_error_handler(array('HTMLPurifier_Encoder', 'muteErrorHandler'));
+ if (iconv('UTF-8', $encoding, 'a') === false) return false;
+ for ($i = 0x20; $i <= 0x7E; $i++) { // all printable ASCII chars
+ $c = chr($i); // UTF-8 char
+ $r = iconv('UTF-8', "$encoding//IGNORE", $c); // initial conversion
+ if (
+ $r === '' ||
+ // This line is needed for iconv implementations that do not
+ // omit characters that do not exist in the target character set
+ ($r === $c && iconv($encoding, 'UTF-8//IGNORE', $r) !== $c)
+ ) {
+ // Reverse engineer: what's the UTF-8 equiv of this byte
+ // sequence? This assumes that there's no variable width
+ // encoding that doesn't support ASCII.
+ $ret[iconv($encoding, 'UTF-8//IGNORE', $c)] = $c;
+ }
+ }
+ restore_error_handler();
+ $encodings[$encoding] = $ret;
+ return $ret;
+ }
+
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Object that provides entity lookup table from entity name to character
+ */
+class HTMLPurifier_EntityLookup {
+
+ /**
+ * Assoc array of entity name to character represented.
+ */
+ public $table;
+
+ /**
+ * Sets up the entity lookup table from the serialized file contents.
+ * @note The serialized contents are versioned, but were generated
+ * using the maintenance script generate_entity_file.php
+ * @warning This is not in constructor to help enforce the Singleton
+ */
+ public function setup($file = false) {
+ if (!$file) {
+ $file = HTMLPURIFIER_PREFIX . '/HTMLPurifier/EntityLookup/entities.ser';
+ }
+ $this->table = unserialize(file_get_contents($file));
+ }
+
+ /**
+ * Retrieves sole instance of the object.
+ * @param Optional prototype of custom lookup table to overload with.
+ */
+ public static function instance($prototype = false) {
+ // no references, since PHP doesn't copy unless modified
+ static $instance = null;
+ if ($prototype) {
+ $instance = $prototype;
+ } elseif (!$instance) {
+ $instance = new HTMLPurifier_EntityLookup();
+ $instance->setup();
+ }
+ return $instance;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+a:246:{s:4:"nbsp";s:2:" ";s:5:"iexcl";s:2:"¡";s:4:"cent";s:2:"¢";s:5:"pound";s:2:"£";s:6:"curren";s:2:"¤";s:3:"yen";s:2:"¥";s:6:"brvbar";s:2:"¦";s:4:"sect";s:2:"§";s:3:"uml";s:2:"¨";s:4:"copy";s:2:"©";s:4:"ordf";s:2:"ª";s:5:"laquo";s:2:"«";s:3:"not";s:2:"¬";s:3:"shy";s:2:"";s:3:"reg";s:2:"®";s:4:"macr";s:2:"¯";s:3:"deg";s:2:"°";s:6:"plusmn";s:2:"±";s:5:"acute";s:2:"´";s:5:"micro";s:2:"µ";s:4:"para";s:2:"¶";s:6:"middot";s:2:"·";s:5:"cedil";s:2:"¸";s:4:"ordm";s:2:"º";s:5:"raquo";s:2:"»";s:6:"iquest";s:2:"¿";s:6:"Agrave";s:2:"À";s:6:"Aacute";s:2:"Á";s:5:"Acirc";s:2:"Â";s:6:"Atilde";s:2:"Ã";s:4:"Auml";s:2:"Ä";s:5:"Aring";s:2:"Å";s:5:"AElig";s:2:"Æ";s:6:"Ccedil";s:2:"Ç";s:6:"Egrave";s:2:"È";s:6:"Eacute";s:2:"É";s:5:"Ecirc";s:2:"Ê";s:4:"Euml";s:2:"Ë";s:6:"Igrave";s:2:"Ì";s:6:"Iacute";s:2:"Í";s:5:"Icirc";s:2:"Î";s:4:"Iuml";s:2:"Ï";s:3:"ETH";s:2:"Ð";s:6:"Ntilde";s:2:"Ñ";s:6:"Ograve";s:2:"Ò";s:6:"Oacute";s:2:"Ó";s:5:"Ocirc";s:2:"Ô";s:6:"Otilde";s:2:"Õ";s:4:"Ouml";s:2:"Ö";s:5:"times";s:2:"×";s:6:"Oslash";s:2:"Ø";s:6:"Ugrave";s:2:"Ù";s:6:"Uacute";s:2:"Ú";s:5:"Ucirc";s:2:"Û";s:4:"Uuml";s:2:"Ü";s:6:"Yacute";s:2:"Ý";s:5:"THORN";s:2:"Þ";s:5:"szlig";s:2:"ß";s:6:"agrave";s:2:"à";s:6:"aacute";s:2:"á";s:5:"acirc";s:2:"â";s:6:"atilde";s:2:"ã";s:4:"auml";s:2:"ä";s:5:"aring";s:2:"å";s:5:"aelig";s:2:"æ";s:6:"ccedil";s:2:"ç";s:6:"egrave";s:2:"è";s:6:"eacute";s:2:"é";s:5:"ecirc";s:2:"ê";s:4:"euml";s:2:"ë";s:6:"igrave";s:2:"ì";s:6:"iacute";s:2:"í";s:5:"icirc";s:2:"î";s:4:"iuml";s:2:"ï";s:3:"eth";s:2:"ð";s:6:"ntilde";s:2:"ñ";s:6:"ograve";s:2:"ò";s:6:"oacute";s:2:"ó";s:5:"ocirc";s:2:"ô";s:6:"otilde";s:2:"õ";s:4:"ouml";s:2:"ö";s:6:"divide";s:2:"÷";s:6:"oslash";s:2:"ø";s:6:"ugrave";s:2:"ù";s:6:"uacute";s:2:"ú";s:5:"ucirc";s:2:"û";s:4:"uuml";s:2:"ü";s:6:"yacute";s:2:"ý";s:5:"thorn";s:2:"þ";s:4:"yuml";s:2:"ÿ";s:4:"quot";s:1:""";s:3:"amp";s:1:"&";s:2:"lt";s:1:"<";s:2:"gt";s:1:">";s:4:"apos";s:1:"'";s:5:"OElig";s:2:"Œ";s:5:"oelig";s:2:"œ";s:6:"Scaron";s:2:"Š";s:6:"scaron";s:2:"š";s:4:"Yuml";s:2:"Ÿ";s:4:"circ";s:2:"ˆ";s:5:"tilde";s:2:"˜";s:4:"ensp";s:3:" ";s:4:"emsp";s:3:" ";s:6:"thinsp";s:3:" ";s:4:"zwnj";s:3:"";s:3:"zwj";s:3:"";s:3:"lrm";s:3:"";s:3:"rlm";s:3:"";s:5:"ndash";s:3:"–";s:5:"mdash";s:3:"—";s:5:"lsquo";s:3:"‘";s:5:"rsquo";s:3:"’";s:5:"sbquo";s:3:"‚";s:5:"ldquo";s:3:"“";s:5:"rdquo";s:3:"”";s:5:"bdquo";s:3:"„";s:6:"dagger";s:3:"†";s:6:"Dagger";s:3:"‡";s:6:"permil";s:3:"‰";s:6:"lsaquo";s:3:"‹";s:6:"rsaquo";s:3:"›";s:4:"euro";s:3:"€";s:4:"fnof";s:2:"ƒ";s:5:"Alpha";s:2:"Α";s:4:"Beta";s:2:"Β";s:5:"Gamma";s:2:"Γ";s:5:"Delta";s:2:"Δ";s:7:"Epsilon";s:2:"Ε";s:4:"Zeta";s:2:"Ζ";s:3:"Eta";s:2:"Η";s:5:"Theta";s:2:"Θ";s:4:"Iota";s:2:"Ι";s:5:"Kappa";s:2:"Κ";s:6:"Lambda";s:2:"Λ";s:2:"Mu";s:2:"Μ";s:2:"Nu";s:2:"Ν";s:2:"Xi";s:2:"Ξ";s:7:"Omicron";s:2:"Ο";s:2:"Pi";s:2:"Π";s:3:"Rho";s:2:"Ρ";s:5:"Sigma";s:2:"Σ";s:3:"Tau";s:2:"Τ";s:7:"Upsilon";s:2:"Υ";s:3:"Phi";s:2:"Φ";s:3:"Chi";s:2:"Χ";s:3:"Psi";s:2:"Ψ";s:5:"Omega";s:2:"Ω";s:5:"alpha";s:2:"α";s:4:"beta";s:2:"β";s:5:"gamma";s:2:"γ";s:5:"delta";s:2:"δ";s:7:"epsilon";s:2:"ε";s:4:"zeta";s:2:"ζ";s:3:"eta";s:2:"η";s:5:"theta";s:2:"θ";s:4:"iota";s:2:"ι";s:5:"kappa";s:2:"κ";s:6:"lambda";s:2:"λ";s:2:"mu";s:2:"μ";s:2:"nu";s:2:"ν";s:2:"xi";s:2:"ξ";s:7:"omicron";s:2:"ο";s:2:"pi";s:2:"π";s:3:"rho";s:2:"ρ";s:6:"sigmaf";s:2:"ς";s:5:"sigma";s:2:"σ";s:3:"tau";s:2:"τ";s:7:"upsilon";s:2:"υ";s:3:"phi";s:2:"φ";s:3:"chi";s:2:"χ";s:3:"psi";s:2:"ψ";s:5:"omega";s:2:"ω";s:8:"thetasym";s:2:"ϑ";s:5:"upsih";s:2:"ϒ";s:3:"piv";s:2:"ϖ";s:4:"bull";s:3:"•";s:6:"hellip";s:3:"…";s:5:"prime";s:3:"′";s:5:"Prime";s:3:"″";s:5:"oline";s:3:"‾";s:5:"frasl";s:3:"⁄";s:6:"weierp";s:3:"℘";s:5:"image";s:3:"ℑ";s:4:"real";s:3:"ℜ";s:5:"trade";s:3:"™";s:7:"alefsym";s:3:"ℵ";s:4:"larr";s:3:"←";s:4:"uarr";s:3:"↑";s:4:"rarr";s:3:"→";s:4:"darr";s:3:"↓";s:4:"harr";s:3:"↔";s:5:"crarr";s:3:"↵";s:4:"lArr";s:3:"⇐";s:4:"uArr";s:3:"⇑";s:4:"rArr";s:3:"⇒";s:4:"dArr";s:3:"⇓";s:4:"hArr";s:3:"⇔";s:6:"forall";s:3:"∀";s:4:"part";s:3:"∂";s:5:"exist";s:3:"∃";s:5:"empty";s:3:"∅";s:5:"nabla";s:3:"∇";s:4:"isin";s:3:"∈";s:5:"notin";s:3:"∉";s:2:"ni";s:3:"∋";s:4:"prod";s:3:"∏";s:3:"sum";s:3:"∑";s:5:"minus";s:3:"−";s:6:"lowast";s:3:"∗";s:5:"radic";s:3:"√";s:4:"prop";s:3:"∝";s:5:"infin";s:3:"∞";s:3:"ang";s:3:"∠";s:3:"and";s:3:"∧";s:2:"or";s:3:"∨";s:3:"cap";s:3:"∩";s:3:"cup";s:3:"∪";s:3:"int";s:3:"∫";s:3:"sim";s:3:"∼";s:4:"cong";s:3:"≅";s:5:"asymp";s:3:"≈";s:2:"ne";s:3:"≠";s:5:"equiv";s:3:"≡";s:2:"le";s:3:"≤";s:2:"ge";s:3:"≥";s:3:"sub";s:3:"⊂";s:3:"sup";s:3:"⊃";s:4:"nsub";s:3:"⊄";s:4:"sube";s:3:"⊆";s:4:"supe";s:3:"⊇";s:5:"oplus";s:3:"⊕";s:6:"otimes";s:3:"⊗";s:4:"perp";s:3:"⊥";s:4:"sdot";s:3:"⋅";s:5:"lceil";s:3:"⌈";s:5:"rceil";s:3:"⌉";s:6:"lfloor";s:3:"⌊";s:6:"rfloor";s:3:"⌋";s:4:"lang";s:3:"〈";s:4:"rang";s:3:"〉";s:3:"loz";s:3:"◊";s:6:"spades";s:3:"♠";s:5:"clubs";s:3:"♣";s:6:"hearts";s:3:"♥";s:5:"diams";s:3:"♦";}
\ No newline at end of file
--- /dev/null
+<?php
+
+// if want to implement error collecting here, we'll need to use some sort
+// of global data (probably trigger_error) because it's impossible to pass
+// $config or $context to the callback functions.
+
+/**
+ * Handles referencing and derefencing character entities
+ */
+class HTMLPurifier_EntityParser
+{
+
+ /**
+ * Reference to entity lookup table.
+ */
+ protected $_entity_lookup;
+
+ /**
+ * Callback regex string for parsing entities.
+ */
+ protected $_substituteEntitiesRegex =
+'/&(?:[#]x([a-fA-F0-9]+)|[#]0*(\d+)|([A-Za-z_:][A-Za-z0-9.\-_:]*));?/';
+// 1. hex 2. dec 3. string (XML style)
+
+
+ /**
+ * Decimal to parsed string conversion table for special entities.
+ */
+ protected $_special_dec2str =
+ array(
+ 34 => '"',
+ 38 => '&',
+ 39 => "'",
+ 60 => '<',
+ 62 => '>'
+ );
+
+ /**
+ * Stripped entity names to decimal conversion table for special entities.
+ */
+ protected $_special_ent2dec =
+ array(
+ 'quot' => 34,
+ 'amp' => 38,
+ 'lt' => 60,
+ 'gt' => 62
+ );
+
+ /**
+ * Substitutes non-special entities with their parsed equivalents. Since
+ * running this whenever you have parsed character is t3h 5uck, we run
+ * it before everything else.
+ *
+ * @param $string String to have non-special entities parsed.
+ * @returns Parsed string.
+ */
+ public function substituteNonSpecialEntities($string) {
+ // it will try to detect missing semicolons, but don't rely on it
+ return preg_replace_callback(
+ $this->_substituteEntitiesRegex,
+ array($this, 'nonSpecialEntityCallback'),
+ $string
+ );
+ }
+
+ /**
+ * Callback function for substituteNonSpecialEntities() that does the work.
+ *
+ * @param $matches PCRE matches array, with 0 the entire match, and
+ * either index 1, 2 or 3 set with a hex value, dec value,
+ * or string (respectively).
+ * @returns Replacement string.
+ */
+
+ protected function nonSpecialEntityCallback($matches) {
+ // replaces all but big five
+ $entity = $matches[0];
+ $is_num = (@$matches[0][1] === '#');
+ if ($is_num) {
+ $is_hex = (@$entity[2] === 'x');
+ $code = $is_hex ? hexdec($matches[1]) : (int) $matches[2];
+
+ // abort for special characters
+ if (isset($this->_special_dec2str[$code])) return $entity;
+
+ return HTMLPurifier_Encoder::unichr($code);
+ } else {
+ if (isset($this->_special_ent2dec[$matches[3]])) return $entity;
+ if (!$this->_entity_lookup) {
+ $this->_entity_lookup = HTMLPurifier_EntityLookup::instance();
+ }
+ if (isset($this->_entity_lookup->table[$matches[3]])) {
+ return $this->_entity_lookup->table[$matches[3]];
+ } else {
+ return $entity;
+ }
+ }
+ }
+
+ /**
+ * Substitutes only special entities with their parsed equivalents.
+ *
+ * @notice We try to avoid calling this function because otherwise, it
+ * would have to be called a lot (for every parsed section).
+ *
+ * @param $string String to have non-special entities parsed.
+ * @returns Parsed string.
+ */
+ public function substituteSpecialEntities($string) {
+ return preg_replace_callback(
+ $this->_substituteEntitiesRegex,
+ array($this, 'specialEntityCallback'),
+ $string);
+ }
+
+ /**
+ * Callback function for substituteSpecialEntities() that does the work.
+ *
+ * This callback has same syntax as nonSpecialEntityCallback().
+ *
+ * @param $matches PCRE-style matches array, with 0 the entire match, and
+ * either index 1, 2 or 3 set with a hex value, dec value,
+ * or string (respectively).
+ * @returns Replacement string.
+ */
+ protected function specialEntityCallback($matches) {
+ $entity = $matches[0];
+ $is_num = (@$matches[0][1] === '#');
+ if ($is_num) {
+ $is_hex = (@$entity[2] === 'x');
+ $int = $is_hex ? hexdec($matches[1]) : (int) $matches[2];
+ return isset($this->_special_dec2str[$int]) ?
+ $this->_special_dec2str[$int] :
+ $entity;
+ } else {
+ return isset($this->_special_ent2dec[$matches[3]]) ?
+ $this->_special_ent2dec[$matches[3]] :
+ $entity;
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Error collection class that enables HTML Purifier to report HTML
+ * problems back to the user
+ */
+class HTMLPurifier_ErrorCollector
+{
+
+ /**
+ * Identifiers for the returned error array. These are purposely numeric
+ * so list() can be used.
+ */
+ const LINENO = 0;
+ const SEVERITY = 1;
+ const MESSAGE = 2;
+ const CHILDREN = 3;
+
+ protected $errors;
+ protected $_current;
+ protected $_stacks = array(array());
+ protected $locale;
+ protected $generator;
+ protected $context;
+
+ protected $lines = array();
+
+ public function __construct($context) {
+ $this->locale =& $context->get('Locale');
+ $this->context = $context;
+ $this->_current =& $this->_stacks[0];
+ $this->errors =& $this->_stacks[0];
+ }
+
+ /**
+ * Sends an error message to the collector for later use
+ * @param $severity int Error severity, PHP error style (don't use E_USER_)
+ * @param $msg string Error message text
+ * @param $subst1 string First substitution for $msg
+ * @param $subst2 string ...
+ */
+ public function send($severity, $msg) {
+
+ $args = array();
+ if (func_num_args() > 2) {
+ $args = func_get_args();
+ array_shift($args);
+ unset($args[0]);
+ }
+
+ $token = $this->context->get('CurrentToken', true);
+ $line = $token ? $token->line : $this->context->get('CurrentLine', true);
+ $col = $token ? $token->col : $this->context->get('CurrentCol', true);
+ $attr = $this->context->get('CurrentAttr', true);
+
+ // perform special substitutions, also add custom parameters
+ $subst = array();
+ if (!is_null($token)) {
+ $args['CurrentToken'] = $token;
+ }
+ if (!is_null($attr)) {
+ $subst['$CurrentAttr.Name'] = $attr;
+ if (isset($token->attr[$attr])) $subst['$CurrentAttr.Value'] = $token->attr[$attr];
+ }
+
+ if (empty($args)) {
+ $msg = $this->locale->getMessage($msg);
+ } else {
+ $msg = $this->locale->formatMessage($msg, $args);
+ }
+
+ if (!empty($subst)) $msg = strtr($msg, $subst);
+
+ // (numerically indexed)
+ $error = array(
+ self::LINENO => $line,
+ self::SEVERITY => $severity,
+ self::MESSAGE => $msg,
+ self::CHILDREN => array()
+ );
+ $this->_current[] = $error;
+
+
+ // NEW CODE BELOW ...
+
+ $struct = null;
+ // Top-level errors are either:
+ // TOKEN type, if $value is set appropriately, or
+ // "syntax" type, if $value is null
+ $new_struct = new HTMLPurifier_ErrorStruct();
+ $new_struct->type = HTMLPurifier_ErrorStruct::TOKEN;
+ if ($token) $new_struct->value = clone $token;
+ if (is_int($line) && is_int($col)) {
+ if (isset($this->lines[$line][$col])) {
+ $struct = $this->lines[$line][$col];
+ } else {
+ $struct = $this->lines[$line][$col] = $new_struct;
+ }
+ // These ksorts may present a performance problem
+ ksort($this->lines[$line], SORT_NUMERIC);
+ } else {
+ if (isset($this->lines[-1])) {
+ $struct = $this->lines[-1];
+ } else {
+ $struct = $this->lines[-1] = $new_struct;
+ }
+ }
+ ksort($this->lines, SORT_NUMERIC);
+
+ // Now, check if we need to operate on a lower structure
+ if (!empty($attr)) {
+ $struct = $struct->getChild(HTMLPurifier_ErrorStruct::ATTR, $attr);
+ if (!$struct->value) {
+ $struct->value = array($attr, 'PUT VALUE HERE');
+ }
+ }
+ if (!empty($cssprop)) {
+ $struct = $struct->getChild(HTMLPurifier_ErrorStruct::CSSPROP, $cssprop);
+ if (!$struct->value) {
+ // if we tokenize CSS this might be a little more difficult to do
+ $struct->value = array($cssprop, 'PUT VALUE HERE');
+ }
+ }
+
+ // Ok, structs are all setup, now time to register the error
+ $struct->addError($severity, $msg);
+ }
+
+ /**
+ * Retrieves raw error data for custom formatter to use
+ * @param List of arrays in format of array(line of error,
+ * error severity, error message,
+ * recursive sub-errors array)
+ */
+ public function getRaw() {
+ return $this->errors;
+ }
+
+ /**
+ * Default HTML formatting implementation for error messages
+ * @param $config Configuration array, vital for HTML output nature
+ * @param $errors Errors array to display; used for recursion.
+ */
+ public function getHTMLFormatted($config, $errors = null) {
+ $ret = array();
+
+ $this->generator = new HTMLPurifier_Generator($config, $this->context);
+ if ($errors === null) $errors = $this->errors;
+
+ // 'At line' message needs to be removed
+
+ // generation code for new structure goes here. It needs to be recursive.
+ foreach ($this->lines as $line => $col_array) {
+ if ($line == -1) continue;
+ foreach ($col_array as $col => $struct) {
+ $this->_renderStruct($ret, $struct, $line, $col);
+ }
+ }
+ if (isset($this->lines[-1])) {
+ $this->_renderStruct($ret, $this->lines[-1]);
+ }
+
+ if (empty($errors)) {
+ return '<p>' . $this->locale->getMessage('ErrorCollector: No errors') . '</p>';
+ } else {
+ return '<ul><li>' . implode('</li><li>', $ret) . '</li></ul>';
+ }
+
+ }
+
+ private function _renderStruct(&$ret, $struct, $line = null, $col = null) {
+ $stack = array($struct);
+ $context_stack = array(array());
+ while ($current = array_pop($stack)) {
+ $context = array_pop($context_stack);
+ foreach ($current->errors as $error) {
+ list($severity, $msg) = $error;
+ $string = '';
+ $string .= '<div>';
+ // W3C uses an icon to indicate the severity of the error.
+ $error = $this->locale->getErrorName($severity);
+ $string .= "<span class=\"error e$severity\"><strong>$error</strong></span> ";
+ if (!is_null($line) && !is_null($col)) {
+ $string .= "<em class=\"location\">Line $line, Column $col: </em> ";
+ } else {
+ $string .= '<em class="location">End of Document: </em> ';
+ }
+ $string .= '<strong class="description">' . $this->generator->escape($msg) . '</strong> ';
+ $string .= '</div>';
+ // Here, have a marker for the character on the column appropriate.
+ // Be sure to clip extremely long lines.
+ //$string .= '<pre>';
+ //$string .= '';
+ //$string .= '</pre>';
+ $ret[] = $string;
+ }
+ foreach ($current->children as $type => $array) {
+ $context[] = $current;
+ $stack = array_merge($stack, array_reverse($array, true));
+ for ($i = count($array); $i > 0; $i--) {
+ $context_stack[] = $context;
+ }
+ }
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Records errors for particular segments of an HTML document such as tokens,
+ * attributes or CSS properties. They can contain error structs (which apply
+ * to components of what they represent), but their main purpose is to hold
+ * errors applying to whatever struct is being used.
+ */
+class HTMLPurifier_ErrorStruct
+{
+
+ /**
+ * Possible values for $children first-key. Note that top-level structures
+ * are automatically token-level.
+ */
+ const TOKEN = 0;
+ const ATTR = 1;
+ const CSSPROP = 2;
+
+ /**
+ * Type of this struct.
+ */
+ public $type;
+
+ /**
+ * Value of the struct we are recording errors for. There are various
+ * values for this:
+ * - TOKEN: Instance of HTMLPurifier_Token
+ * - ATTR: array('attr-name', 'value')
+ * - CSSPROP: array('prop-name', 'value')
+ */
+ public $value;
+
+ /**
+ * Errors registered for this structure.
+ */
+ public $errors = array();
+
+ /**
+ * Child ErrorStructs that are from this structure. For example, a TOKEN
+ * ErrorStruct would contain ATTR ErrorStructs. This is a multi-dimensional
+ * array in structure: [TYPE]['identifier']
+ */
+ public $children = array();
+
+ public function getChild($type, $id) {
+ if (!isset($this->children[$type][$id])) {
+ $this->children[$type][$id] = new HTMLPurifier_ErrorStruct();
+ $this->children[$type][$id]->type = $type;
+ }
+ return $this->children[$type][$id];
+ }
+
+ public function addError($severity, $message) {
+ $this->errors[] = array($severity, $message);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Global exception class for HTML Purifier; any exceptions we throw
+ * are from here.
+ */
+class HTMLPurifier_Exception extends Exception
+{
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Represents a pre or post processing filter on HTML Purifier's output
+ *
+ * Sometimes, a little ad-hoc fixing of HTML has to be done before
+ * it gets sent through HTML Purifier: you can use filters to acheive
+ * this effect. For instance, YouTube videos can be preserved using
+ * this manner. You could have used a decorator for this task, but
+ * PHP's support for them is not terribly robust, so we're going
+ * to just loop through the filters.
+ *
+ * Filters should be exited first in, last out. If there are three filters,
+ * named 1, 2 and 3, the order of execution should go 1->preFilter,
+ * 2->preFilter, 3->preFilter, purify, 3->postFilter, 2->postFilter,
+ * 1->postFilter.
+ *
+ * @note Methods are not declared abstract as it is perfectly legitimate
+ * for an implementation not to want anything to happen on a step
+ */
+
+class HTMLPurifier_Filter
+{
+
+ /**
+ * Name of the filter for identification purposes
+ */
+ public $name;
+
+ /**
+ * Pre-processor function, handles HTML before HTML Purifier
+ */
+ public function preFilter($html, $config, $context) {
+ return $html;
+ }
+
+ /**
+ * Post-processor function, handles HTML after HTML Purifier
+ */
+ public function postFilter($html, $config, $context) {
+ return $html;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * This filter extracts <style> blocks from input HTML, cleans them up
+ * using CSSTidy, and then places them in $purifier->context->get('StyleBlocks')
+ * so they can be used elsewhere in the document.
+ *
+ * @note
+ * See tests/HTMLPurifier/Filter/ExtractStyleBlocksTest.php for
+ * sample usage.
+ *
+ * @note
+ * This filter can also be used on stylesheets not included in the
+ * document--something purists would probably prefer. Just directly
+ * call HTMLPurifier_Filter_ExtractStyleBlocks->cleanCSS()
+ */
+class HTMLPurifier_Filter_ExtractStyleBlocks extends HTMLPurifier_Filter
+{
+
+ public $name = 'ExtractStyleBlocks';
+ private $_styleMatches = array();
+ private $_tidy;
+
+ public function __construct() {
+ $this->_tidy = new csstidy();
+ }
+
+ /**
+ * Save the contents of CSS blocks to style matches
+ * @param $matches preg_replace style $matches array
+ */
+ protected function styleCallback($matches) {
+ $this->_styleMatches[] = $matches[1];
+ }
+
+ /**
+ * Removes inline <style> tags from HTML, saves them for later use
+ * @todo Extend to indicate non-text/css style blocks
+ */
+ public function preFilter($html, $config, $context) {
+ $tidy = $config->get('Filter.ExtractStyleBlocks.TidyImpl');
+ if ($tidy !== null) $this->_tidy = $tidy;
+ $html = preg_replace_callback('#<style(?:\s.*)?>(.+)</style>#isU', array($this, 'styleCallback'), $html);
+ $style_blocks = $this->_styleMatches;
+ $this->_styleMatches = array(); // reset
+ $context->register('StyleBlocks', $style_blocks); // $context must not be reused
+ if ($this->_tidy) {
+ foreach ($style_blocks as &$style) {
+ $style = $this->cleanCSS($style, $config, $context);
+ }
+ }
+ return $html;
+ }
+
+ /**
+ * Takes CSS (the stuff found in <style>) and cleans it.
+ * @warning Requires CSSTidy <http://csstidy.sourceforge.net/>
+ * @param $css CSS styling to clean
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ * @return Cleaned CSS
+ */
+ public function cleanCSS($css, $config, $context) {
+ // prepare scope
+ $scope = $config->get('Filter.ExtractStyleBlocks.Scope');
+ if ($scope !== null) {
+ $scopes = array_map('trim', explode(',', $scope));
+ } else {
+ $scopes = array();
+ }
+ // remove comments from CSS
+ $css = trim($css);
+ if (strncmp('<!--', $css, 4) === 0) {
+ $css = substr($css, 4);
+ }
+ if (strlen($css) > 3 && substr($css, -3) == '-->') {
+ $css = substr($css, 0, -3);
+ }
+ $css = trim($css);
+ $this->_tidy->parse($css);
+ $css_definition = $config->getDefinition('CSS');
+ foreach ($this->_tidy->css as $k => $decls) {
+ // $decls are all CSS declarations inside an @ selector
+ $new_decls = array();
+ foreach ($decls as $selector => $style) {
+ $selector = trim($selector);
+ if ($selector === '') continue; // should not happen
+ if ($selector[0] === '+') {
+ if ($selector !== '' && $selector[0] === '+') continue;
+ }
+ if (!empty($scopes)) {
+ $new_selector = array(); // because multiple ones are possible
+ $selectors = array_map('trim', explode(',', $selector));
+ foreach ($scopes as $s1) {
+ foreach ($selectors as $s2) {
+ $new_selector[] = "$s1 $s2";
+ }
+ }
+ $selector = implode(', ', $new_selector); // now it's a string
+ }
+ foreach ($style as $name => $value) {
+ if (!isset($css_definition->info[$name])) {
+ unset($style[$name]);
+ continue;
+ }
+ $def = $css_definition->info[$name];
+ $ret = $def->validate($value, $config, $context);
+ if ($ret === false) unset($style[$name]);
+ else $style[$name] = $ret;
+ }
+ $new_decls[$selector] = $style;
+ }
+ $this->_tidy->css[$k] = $new_decls;
+ }
+ // remove stuff that shouldn't be used, could be reenabled
+ // after security risks are analyzed
+ $this->_tidy->import = array();
+ $this->_tidy->charset = null;
+ $this->_tidy->namespace = null;
+ $css = $this->_tidy->print->plain();
+ // we are going to escape any special characters <>& to ensure
+ // that no funny business occurs (i.e. </style> in a font-family prop).
+ if ($config->get('Filter.ExtractStyleBlocks.Escaping')) {
+ $css = str_replace(
+ array('<', '>', '&'),
+ array('\3C ', '\3E ', '\26 '),
+ $css
+ );
+ }
+ return $css;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_Filter_YouTube extends HTMLPurifier_Filter
+{
+
+ public $name = 'YouTube';
+
+ public function preFilter($html, $config, $context) {
+ $pre_regex = '#<object[^>]+>.+?'.
+ 'http://www.youtube.com/v/([A-Za-z0-9\-_]+).+?</object>#s';
+ $pre_replace = '<span class="youtube-embed">\1</span>';
+ return preg_replace($pre_regex, $pre_replace, $html);
+ }
+
+ public function postFilter($html, $config, $context) {
+ $post_regex = '#<span class="youtube-embed">([A-Za-z0-9\-_]+)</span>#';
+ return preg_replace_callback($post_regex, array($this, 'postFilterCallback'), $html);
+ }
+
+ protected function armorUrl($url) {
+ return str_replace('--', '--', $url);
+ }
+
+ protected function postFilterCallback($matches) {
+ $url = $this->armorUrl($matches[1]);
+ return '<object width="425" height="350" type="application/x-shockwave-flash" '.
+ 'data="http://www.youtube.com/v/'.$url.'">'.
+ '<param name="movie" value="http://www.youtube.com/v/'.$url.'"></param>'.
+ '<!--[if IE]>'.
+ '<embed src="http://www.youtube.com/v/'.$url.'"'.
+ 'type="application/x-shockwave-flash"'.
+ 'wmode="transparent" width="425" height="350" />'.
+ '<![endif]-->'.
+ '</object>';
+
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Generates HTML from tokens.
+ * @todo Refactor interface so that configuration/context is determined
+ * upon instantiation, no need for messy generateFromTokens() calls
+ * @todo Make some of the more internal functions protected, and have
+ * unit tests work around that
+ */
+class HTMLPurifier_Generator
+{
+
+ /**
+ * Whether or not generator should produce XML output
+ */
+ private $_xhtml = true;
+
+ /**
+ * :HACK: Whether or not generator should comment the insides of <script> tags
+ */
+ private $_scriptFix = false;
+
+ /**
+ * Cache of HTMLDefinition during HTML output to determine whether or
+ * not attributes should be minimized.
+ */
+ private $_def;
+
+ /**
+ * Cache of %Output.SortAttr
+ */
+ private $_sortAttr;
+
+ /**
+ * Configuration for the generator
+ */
+ protected $config;
+
+ /**
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ */
+ public function __construct($config, $context) {
+ $this->config = $config;
+ $this->_scriptFix = $config->get('Output.CommentScriptContents');
+ $this->_sortAttr = $config->get('Output.SortAttr');
+ $this->_def = $config->getHTMLDefinition();
+ $this->_xhtml = $this->_def->doctype->xml;
+ }
+
+ /**
+ * Generates HTML from an array of tokens.
+ * @param $tokens Array of HTMLPurifier_Token
+ * @param $config HTMLPurifier_Config object
+ * @return Generated HTML
+ */
+ public function generateFromTokens($tokens) {
+ if (!$tokens) return '';
+
+ // Basic algorithm
+ $html = '';
+ for ($i = 0, $size = count($tokens); $i < $size; $i++) {
+ if ($this->_scriptFix && $tokens[$i]->name === 'script'
+ && $i + 2 < $size && $tokens[$i+2] instanceof HTMLPurifier_Token_End) {
+ // script special case
+ // the contents of the script block must be ONE token
+ // for this to work.
+ $html .= $this->generateFromToken($tokens[$i++]);
+ $html .= $this->generateScriptFromToken($tokens[$i++]);
+ }
+ $html .= $this->generateFromToken($tokens[$i]);
+ }
+
+ // Tidy cleanup
+ if (extension_loaded('tidy') && $this->config->get('Output.TidyFormat')) {
+ $tidy = new Tidy;
+ $tidy->parseString($html, array(
+ 'indent'=> true,
+ 'output-xhtml' => $this->_xhtml,
+ 'show-body-only' => true,
+ 'indent-spaces' => 2,
+ 'wrap' => 68,
+ ), 'utf8');
+ $tidy->cleanRepair();
+ $html = (string) $tidy; // explicit cast necessary
+ }
+
+ // Normalize newlines to system defined value
+ $nl = $this->config->get('Output.Newline');
+ if ($nl === null) $nl = PHP_EOL;
+ if ($nl !== "\n") $html = str_replace("\n", $nl, $html);
+ return $html;
+ }
+
+ /**
+ * Generates HTML from a single token.
+ * @param $token HTMLPurifier_Token object.
+ * @return Generated HTML
+ */
+ public function generateFromToken($token) {
+ if (!$token instanceof HTMLPurifier_Token) {
+ trigger_error('Cannot generate HTML from non-HTMLPurifier_Token object', E_USER_WARNING);
+ return '';
+
+ } elseif ($token instanceof HTMLPurifier_Token_Start) {
+ $attr = $this->generateAttributes($token->attr, $token->name);
+ return '<' . $token->name . ($attr ? ' ' : '') . $attr . '>';
+
+ } elseif ($token instanceof HTMLPurifier_Token_End) {
+ return '</' . $token->name . '>';
+
+ } elseif ($token instanceof HTMLPurifier_Token_Empty) {
+ $attr = $this->generateAttributes($token->attr, $token->name);
+ return '<' . $token->name . ($attr ? ' ' : '') . $attr .
+ ( $this->_xhtml ? ' /': '' ) // <br /> v. <br>
+ . '>';
+
+ } elseif ($token instanceof HTMLPurifier_Token_Text) {
+ return $this->escape($token->data, ENT_NOQUOTES);
+
+ } elseif ($token instanceof HTMLPurifier_Token_Comment) {
+ return '<!--' . $token->data . '-->';
+ } else {
+ return '';
+
+ }
+ }
+
+ /**
+ * Special case processor for the contents of script tags
+ * @warning This runs into problems if there's already a literal
+ * --> somewhere inside the script contents.
+ */
+ public function generateScriptFromToken($token) {
+ if (!$token instanceof HTMLPurifier_Token_Text) return $this->generateFromToken($token);
+ // Thanks <http://lachy.id.au/log/2005/05/script-comments>
+ $data = preg_replace('#//\s*$#', '', $token->data);
+ return '<!--//--><![CDATA[//><!--' . "\n" . trim($data) . "\n" . '//--><!]]>';
+ }
+
+ /**
+ * Generates attribute declarations from attribute array.
+ * @note This does not include the leading or trailing space.
+ * @param $assoc_array_of_attributes Attribute array
+ * @param $element Name of element attributes are for, used to check
+ * attribute minimization.
+ * @return Generate HTML fragment for insertion.
+ */
+ public function generateAttributes($assoc_array_of_attributes, $element = false) {
+ $html = '';
+ if ($this->_sortAttr) ksort($assoc_array_of_attributes);
+ foreach ($assoc_array_of_attributes as $key => $value) {
+ if (!$this->_xhtml) {
+ // Remove namespaced attributes
+ if (strpos($key, ':') !== false) continue;
+ // Check if we should minimize the attribute: val="val" -> val
+ if ($element && !empty($this->_def->info[$element]->attr[$key]->minimized)) {
+ $html .= $key . ' ';
+ continue;
+ }
+ }
+ $html .= $key.'="'.$this->escape($value).'" ';
+ }
+ return rtrim($html);
+ }
+
+ /**
+ * Escapes raw text data.
+ * @todo This really ought to be protected, but until we have a facility
+ * for properly generating HTML here w/o using tokens, it stays
+ * public.
+ * @param $string String data to escape for HTML.
+ * @param $quote Quoting style, like htmlspecialchars. ENT_NOQUOTES is
+ * permissible for non-attribute output.
+ * @return String escaped data.
+ */
+ public function escape($string, $quote = ENT_COMPAT) {
+ return htmlspecialchars($string, $quote, 'UTF-8');
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Definition of the purified HTML that describes allowed children,
+ * attributes, and many other things.
+ *
+ * Conventions:
+ *
+ * All member variables that are prefixed with info
+ * (including the main $info array) are used by HTML Purifier internals
+ * and should not be directly edited when customizing the HTMLDefinition.
+ * They can usually be set via configuration directives or custom
+ * modules.
+ *
+ * On the other hand, member variables without the info prefix are used
+ * internally by the HTMLDefinition and MUST NOT be used by other HTML
+ * Purifier internals. Many of them, however, are public, and may be
+ * edited by userspace code to tweak the behavior of HTMLDefinition.
+ *
+ * @note This class is inspected by Printer_HTMLDefinition; please
+ * update that class if things here change.
+ *
+ * @warning Directives that change this object's structure must be in
+ * the HTML or Attr namespace!
+ */
+class HTMLPurifier_HTMLDefinition extends HTMLPurifier_Definition
+{
+
+ // FULLY-PUBLIC VARIABLES ---------------------------------------------
+
+ /**
+ * Associative array of element names to HTMLPurifier_ElementDef
+ */
+ public $info = array();
+
+ /**
+ * Associative array of global attribute name to attribute definition.
+ */
+ public $info_global_attr = array();
+
+ /**
+ * String name of parent element HTML will be going into.
+ */
+ public $info_parent = 'div';
+
+ /**
+ * Definition for parent element, allows parent element to be a
+ * tag that's not allowed inside the HTML fragment.
+ */
+ public $info_parent_def;
+
+ /**
+ * String name of element used to wrap inline elements in block context
+ * @note This is rarely used except for BLOCKQUOTEs in strict mode
+ */
+ public $info_block_wrapper = 'p';
+
+ /**
+ * Associative array of deprecated tag name to HTMLPurifier_TagTransform
+ */
+ public $info_tag_transform = array();
+
+ /**
+ * Indexed list of HTMLPurifier_AttrTransform to be performed before validation.
+ */
+ public $info_attr_transform_pre = array();
+
+ /**
+ * Indexed list of HTMLPurifier_AttrTransform to be performed after validation.
+ */
+ public $info_attr_transform_post = array();
+
+ /**
+ * Nested lookup array of content set name (Block, Inline) to
+ * element name to whether or not it belongs in that content set.
+ */
+ public $info_content_sets = array();
+
+ /**
+ * Indexed list of HTMLPurifier_Injector to be used.
+ */
+ public $info_injector = array();
+
+ /**
+ * Doctype object
+ */
+ public $doctype;
+
+
+
+ // RAW CUSTOMIZATION STUFF --------------------------------------------
+
+ /**
+ * Adds a custom attribute to a pre-existing element
+ * @note This is strictly convenience, and does not have a corresponding
+ * method in HTMLPurifier_HTMLModule
+ * @param $element_name String element name to add attribute to
+ * @param $attr_name String name of attribute
+ * @param $def Attribute definition, can be string or object, see
+ * HTMLPurifier_AttrTypes for details
+ */
+ public function addAttribute($element_name, $attr_name, $def) {
+ $module = $this->getAnonymousModule();
+ if (!isset($module->info[$element_name])) {
+ $element = $module->addBlankElement($element_name);
+ } else {
+ $element = $module->info[$element_name];
+ }
+ $element->attr[$attr_name] = $def;
+ }
+
+ /**
+ * Adds a custom element to your HTML definition
+ * @note See HTMLPurifier_HTMLModule::addElement for detailed
+ * parameter and return value descriptions.
+ */
+ public function addElement($element_name, $type, $contents, $attr_collections, $attributes = array()) {
+ $module = $this->getAnonymousModule();
+ // assume that if the user is calling this, the element
+ // is safe. This may not be a good idea
+ $element = $module->addElement($element_name, $type, $contents, $attr_collections, $attributes);
+ return $element;
+ }
+
+ /**
+ * Adds a blank element to your HTML definition, for overriding
+ * existing behavior
+ * @note See HTMLPurifier_HTMLModule::addBlankElement for detailed
+ * parameter and return value descriptions.
+ */
+ public function addBlankElement($element_name) {
+ $module = $this->getAnonymousModule();
+ $element = $module->addBlankElement($element_name);
+ return $element;
+ }
+
+ /**
+ * Retrieves a reference to the anonymous module, so you can
+ * bust out advanced features without having to make your own
+ * module.
+ */
+ public function getAnonymousModule() {
+ if (!$this->_anonModule) {
+ $this->_anonModule = new HTMLPurifier_HTMLModule();
+ $this->_anonModule->name = 'Anonymous';
+ }
+ return $this->_anonModule;
+ }
+
+ private $_anonModule;
+
+
+ // PUBLIC BUT INTERNAL VARIABLES --------------------------------------
+
+ public $type = 'HTML';
+ public $manager; /**< Instance of HTMLPurifier_HTMLModuleManager */
+
+ /**
+ * Performs low-cost, preliminary initialization.
+ */
+ public function __construct() {
+ $this->manager = new HTMLPurifier_HTMLModuleManager();
+ }
+
+ protected function doSetup($config) {
+ $this->processModules($config);
+ $this->setupConfigStuff($config);
+ unset($this->manager);
+
+ // cleanup some of the element definitions
+ foreach ($this->info as $k => $v) {
+ unset($this->info[$k]->content_model);
+ unset($this->info[$k]->content_model_type);
+ }
+ }
+
+ /**
+ * Extract out the information from the manager
+ */
+ protected function processModules($config) {
+
+ if ($this->_anonModule) {
+ // for user specific changes
+ // this is late-loaded so we don't have to deal with PHP4
+ // reference wonky-ness
+ $this->manager->addModule($this->_anonModule);
+ unset($this->_anonModule);
+ }
+
+ $this->manager->setup($config);
+ $this->doctype = $this->manager->doctype;
+
+ foreach ($this->manager->modules as $module) {
+ foreach($module->info_tag_transform as $k => $v) {
+ if ($v === false) unset($this->info_tag_transform[$k]);
+ else $this->info_tag_transform[$k] = $v;
+ }
+ foreach($module->info_attr_transform_pre as $k => $v) {
+ if ($v === false) unset($this->info_attr_transform_pre[$k]);
+ else $this->info_attr_transform_pre[$k] = $v;
+ }
+ foreach($module->info_attr_transform_post as $k => $v) {
+ if ($v === false) unset($this->info_attr_transform_post[$k]);
+ else $this->info_attr_transform_post[$k] = $v;
+ }
+ foreach ($module->info_injector as $k => $v) {
+ if ($v === false) unset($this->info_injector[$k]);
+ else $this->info_injector[$k] = $v;
+ }
+ }
+
+ $this->info = $this->manager->getElements();
+ $this->info_content_sets = $this->manager->contentSets->lookup;
+
+ }
+
+ /**
+ * Sets up stuff based on config. We need a better way of doing this.
+ */
+ protected function setupConfigStuff($config) {
+
+ $block_wrapper = $config->get('HTML.BlockWrapper');
+ if (isset($this->info_content_sets['Block'][$block_wrapper])) {
+ $this->info_block_wrapper = $block_wrapper;
+ } else {
+ trigger_error('Cannot use non-block element as block wrapper',
+ E_USER_ERROR);
+ }
+
+ $parent = $config->get('HTML.Parent');
+ $def = $this->manager->getElement($parent, true);
+ if ($def) {
+ $this->info_parent = $parent;
+ $this->info_parent_def = $def;
+ } else {
+ trigger_error('Cannot use unrecognized element as parent',
+ E_USER_ERROR);
+ $this->info_parent_def = $this->manager->getElement($this->info_parent, true);
+ }
+
+ // support template text
+ $support = "(for information on implementing this, see the ".
+ "support forums) ";
+
+ // setup allowed elements -----------------------------------------
+
+ $allowed_elements = $config->get('HTML.AllowedElements');
+ $allowed_attributes = $config->get('HTML.AllowedAttributes'); // retrieve early
+
+ if (!is_array($allowed_elements) && !is_array($allowed_attributes)) {
+ $allowed = $config->get('HTML.Allowed');
+ if (is_string($allowed)) {
+ list($allowed_elements, $allowed_attributes) = $this->parseTinyMCEAllowedList($allowed);
+ }
+ }
+
+ if (is_array($allowed_elements)) {
+ foreach ($this->info as $name => $d) {
+ if(!isset($allowed_elements[$name])) unset($this->info[$name]);
+ unset($allowed_elements[$name]);
+ }
+ // emit errors
+ foreach ($allowed_elements as $element => $d) {
+ $element = htmlspecialchars($element); // PHP doesn't escape errors, be careful!
+ trigger_error("Element '$element' is not supported $support", E_USER_WARNING);
+ }
+ }
+
+ // setup allowed attributes ---------------------------------------
+
+ $allowed_attributes_mutable = $allowed_attributes; // by copy!
+ if (is_array($allowed_attributes)) {
+
+ // This actually doesn't do anything, since we went away from
+ // global attributes. It's possible that userland code uses
+ // it, but HTMLModuleManager doesn't!
+ foreach ($this->info_global_attr as $attr => $x) {
+ $keys = array($attr, "*@$attr", "*.$attr");
+ $delete = true;
+ foreach ($keys as $key) {
+ if ($delete && isset($allowed_attributes[$key])) {
+ $delete = false;
+ }
+ if (isset($allowed_attributes_mutable[$key])) {
+ unset($allowed_attributes_mutable[$key]);
+ }
+ }
+ if ($delete) unset($this->info_global_attr[$attr]);
+ }
+
+ foreach ($this->info as $tag => $info) {
+ foreach ($info->attr as $attr => $x) {
+ $keys = array("$tag@$attr", $attr, "*@$attr", "$tag.$attr", "*.$attr");
+ $delete = true;
+ foreach ($keys as $key) {
+ if ($delete && isset($allowed_attributes[$key])) {
+ $delete = false;
+ }
+ if (isset($allowed_attributes_mutable[$key])) {
+ unset($allowed_attributes_mutable[$key]);
+ }
+ }
+ if ($delete) unset($this->info[$tag]->attr[$attr]);
+ }
+ }
+ // emit errors
+ foreach ($allowed_attributes_mutable as $elattr => $d) {
+ $bits = preg_split('/[.@]/', $elattr, 2);
+ $c = count($bits);
+ switch ($c) {
+ case 2:
+ if ($bits[0] !== '*') {
+ $element = htmlspecialchars($bits[0]);
+ $attribute = htmlspecialchars($bits[1]);
+ if (!isset($this->info[$element])) {
+ trigger_error("Cannot allow attribute '$attribute' if element '$element' is not allowed/supported $support");
+ } else {
+ trigger_error("Attribute '$attribute' in element '$element' not supported $support",
+ E_USER_WARNING);
+ }
+ break;
+ }
+ // otherwise fall through
+ case 1:
+ $attribute = htmlspecialchars($bits[0]);
+ trigger_error("Global attribute '$attribute' is not ".
+ "supported in any elements $support",
+ E_USER_WARNING);
+ break;
+ }
+ }
+
+ }
+
+ // setup forbidden elements ---------------------------------------
+
+ $forbidden_elements = $config->get('HTML.ForbiddenElements');
+ $forbidden_attributes = $config->get('HTML.ForbiddenAttributes');
+
+ foreach ($this->info as $tag => $info) {
+ if (isset($forbidden_elements[$tag])) {
+ unset($this->info[$tag]);
+ continue;
+ }
+ foreach ($info->attr as $attr => $x) {
+ if (
+ isset($forbidden_attributes["$tag@$attr"]) ||
+ isset($forbidden_attributes["*@$attr"]) ||
+ isset($forbidden_attributes[$attr])
+ ) {
+ unset($this->info[$tag]->attr[$attr]);
+ continue;
+ } // this segment might get removed eventually
+ elseif (isset($forbidden_attributes["$tag.$attr"])) {
+ // $tag.$attr are not user supplied, so no worries!
+ trigger_error("Error with $tag.$attr: tag.attr syntax not supported for HTML.ForbiddenAttributes; use tag@attr instead", E_USER_WARNING);
+ }
+ }
+ }
+ foreach ($forbidden_attributes as $key => $v) {
+ if (strlen($key) < 2) continue;
+ if ($key[0] != '*') continue;
+ if ($key[1] == '.') {
+ trigger_error("Error with $key: *.attr syntax not supported for HTML.ForbiddenAttributes; use attr instead", E_USER_WARNING);
+ }
+ }
+
+ // setup injectors -----------------------------------------------------
+ foreach ($this->info_injector as $i => $injector) {
+ if ($injector->checkNeeded($config) !== false) {
+ // remove injector that does not have it's required
+ // elements/attributes present, and is thus not needed.
+ unset($this->info_injector[$i]);
+ }
+ }
+ }
+
+ /**
+ * Parses a TinyMCE-flavored Allowed Elements and Attributes list into
+ * separate lists for processing. Format is element[attr1|attr2],element2...
+ * @warning Although it's largely drawn from TinyMCE's implementation,
+ * it is different, and you'll probably have to modify your lists
+ * @param $list String list to parse
+ * @param array($allowed_elements, $allowed_attributes)
+ * @todo Give this its own class, probably static interface
+ */
+ public function parseTinyMCEAllowedList($list) {
+
+ $list = str_replace(array(' ', "\t"), '', $list);
+
+ $elements = array();
+ $attributes = array();
+
+ $chunks = preg_split('/(,|[\n\r]+)/', $list);
+ foreach ($chunks as $chunk) {
+ if (empty($chunk)) continue;
+ // remove TinyMCE element control characters
+ if (!strpos($chunk, '[')) {
+ $element = $chunk;
+ $attr = false;
+ } else {
+ list($element, $attr) = explode('[', $chunk);
+ }
+ if ($element !== '*') $elements[$element] = true;
+ if (!$attr) continue;
+ $attr = substr($attr, 0, strlen($attr) - 1); // remove trailing ]
+ $attr = explode('|', $attr);
+ foreach ($attr as $key) {
+ $attributes["$element.$key"] = true;
+ }
+ }
+
+ return array($elements, $attributes);
+
+ }
+
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Represents an XHTML 1.1 module, with information on elements, tags
+ * and attributes.
+ * @note Even though this is technically XHTML 1.1, it is also used for
+ * regular HTML parsing. We are using modulization as a convenient
+ * way to represent the internals of HTMLDefinition, and our
+ * implementation is by no means conforming and does not directly
+ * use the normative DTDs or XML schemas.
+ * @note The public variables in a module should almost directly
+ * correspond to the variables in HTMLPurifier_HTMLDefinition.
+ * However, the prefix info carries no special meaning in these
+ * objects (include it anyway if that's the correspondence though).
+ * @todo Consider making some member functions protected
+ */
+
+class HTMLPurifier_HTMLModule
+{
+
+ // -- Overloadable ----------------------------------------------------
+
+ /**
+ * Short unique string identifier of the module
+ */
+ public $name;
+
+ /**
+ * Informally, a list of elements this module changes. Not used in
+ * any significant way.
+ */
+ public $elements = array();
+
+ /**
+ * Associative array of element names to element definitions.
+ * Some definitions may be incomplete, to be merged in later
+ * with the full definition.
+ */
+ public $info = array();
+
+ /**
+ * Associative array of content set names to content set additions.
+ * This is commonly used to, say, add an A element to the Inline
+ * content set. This corresponds to an internal variable $content_sets
+ * and NOT info_content_sets member variable of HTMLDefinition.
+ */
+ public $content_sets = array();
+
+ /**
+ * Associative array of attribute collection names to attribute
+ * collection additions. More rarely used for adding attributes to
+ * the global collections. Example is the StyleAttribute module adding
+ * the style attribute to the Core. Corresponds to HTMLDefinition's
+ * attr_collections->info, since the object's data is only info,
+ * with extra behavior associated with it.
+ */
+ public $attr_collections = array();
+
+ /**
+ * Associative array of deprecated tag name to HTMLPurifier_TagTransform
+ */
+ public $info_tag_transform = array();
+
+ /**
+ * List of HTMLPurifier_AttrTransform to be performed before validation.
+ */
+ public $info_attr_transform_pre = array();
+
+ /**
+ * List of HTMLPurifier_AttrTransform to be performed after validation.
+ */
+ public $info_attr_transform_post = array();
+
+ /**
+ * List of HTMLPurifier_Injector to be performed during well-formedness fixing.
+ * An injector will only be invoked if all of it's pre-requisites are met;
+ * if an injector fails setup, there will be no error; it will simply be
+ * silently disabled.
+ */
+ public $info_injector = array();
+
+ /**
+ * Boolean flag that indicates whether or not getChildDef is implemented.
+ * For optimization reasons: may save a call to a function. Be sure
+ * to set it if you do implement getChildDef(), otherwise it will have
+ * no effect!
+ */
+ public $defines_child_def = false;
+
+ /**
+ * Boolean flag whether or not this module is safe. If it is not safe, all
+ * of its members are unsafe. Modules are safe by default (this might be
+ * slightly dangerous, but it doesn't make much sense to force HTML Purifier,
+ * which is based off of safe HTML, to explicitly say, "This is safe," even
+ * though there are modules which are "unsafe")
+ *
+ * @note Previously, safety could be applied at an element level granularity.
+ * We've removed this ability, so in order to add "unsafe" elements
+ * or attributes, a dedicated module with this property set to false
+ * must be used.
+ */
+ public $safe = true;
+
+ /**
+ * Retrieves a proper HTMLPurifier_ChildDef subclass based on
+ * content_model and content_model_type member variables of
+ * the HTMLPurifier_ElementDef class. There is a similar function
+ * in HTMLPurifier_HTMLDefinition.
+ * @param $def HTMLPurifier_ElementDef instance
+ * @return HTMLPurifier_ChildDef subclass
+ */
+ public function getChildDef($def) {return false;}
+
+ // -- Convenience -----------------------------------------------------
+
+ /**
+ * Convenience function that sets up a new element
+ * @param $element Name of element to add
+ * @param $type What content set should element be registered to?
+ * Set as false to skip this step.
+ * @param $contents Allowed children in form of:
+ * "$content_model_type: $content_model"
+ * @param $attr_includes What attribute collections to register to
+ * element?
+ * @param $attr What unique attributes does the element define?
+ * @note See ElementDef for in-depth descriptions of these parameters.
+ * @return Created element definition object, so you
+ * can set advanced parameters
+ */
+ public function addElement($element, $type, $contents, $attr_includes = array(), $attr = array()) {
+ $this->elements[] = $element;
+ // parse content_model
+ list($content_model_type, $content_model) = $this->parseContents($contents);
+ // merge in attribute inclusions
+ $this->mergeInAttrIncludes($attr, $attr_includes);
+ // add element to content sets
+ if ($type) $this->addElementToContentSet($element, $type);
+ // create element
+ $this->info[$element] = HTMLPurifier_ElementDef::create(
+ $content_model, $content_model_type, $attr
+ );
+ // literal object $contents means direct child manipulation
+ if (!is_string($contents)) $this->info[$element]->child = $contents;
+ return $this->info[$element];
+ }
+
+ /**
+ * Convenience function that creates a totally blank, non-standalone
+ * element.
+ * @param $element Name of element to create
+ * @return Created element
+ */
+ public function addBlankElement($element) {
+ if (!isset($this->info[$element])) {
+ $this->elements[] = $element;
+ $this->info[$element] = new HTMLPurifier_ElementDef();
+ $this->info[$element]->standalone = false;
+ } else {
+ trigger_error("Definition for $element already exists in module, cannot redefine");
+ }
+ return $this->info[$element];
+ }
+
+ /**
+ * Convenience function that registers an element to a content set
+ * @param Element to register
+ * @param Name content set (warning: case sensitive, usually upper-case
+ * first letter)
+ */
+ public function addElementToContentSet($element, $type) {
+ if (!isset($this->content_sets[$type])) $this->content_sets[$type] = '';
+ else $this->content_sets[$type] .= ' | ';
+ $this->content_sets[$type] .= $element;
+ }
+
+ /**
+ * Convenience function that transforms single-string contents
+ * into separate content model and content model type
+ * @param $contents Allowed children in form of:
+ * "$content_model_type: $content_model"
+ * @note If contents is an object, an array of two nulls will be
+ * returned, and the callee needs to take the original $contents
+ * and use it directly.
+ */
+ public function parseContents($contents) {
+ if (!is_string($contents)) return array(null, null); // defer
+ switch ($contents) {
+ // check for shorthand content model forms
+ case 'Empty':
+ return array('empty', '');
+ case 'Inline':
+ return array('optional', 'Inline | #PCDATA');
+ case 'Flow':
+ return array('optional', 'Flow | #PCDATA');
+ }
+ list($content_model_type, $content_model) = explode(':', $contents);
+ $content_model_type = strtolower(trim($content_model_type));
+ $content_model = trim($content_model);
+ return array($content_model_type, $content_model);
+ }
+
+ /**
+ * Convenience function that merges a list of attribute includes into
+ * an attribute array.
+ * @param $attr Reference to attr array to modify
+ * @param $attr_includes Array of includes / string include to merge in
+ */
+ public function mergeInAttrIncludes(&$attr, $attr_includes) {
+ if (!is_array($attr_includes)) {
+ if (empty($attr_includes)) $attr_includes = array();
+ else $attr_includes = array($attr_includes);
+ }
+ $attr[0] = $attr_includes;
+ }
+
+ /**
+ * Convenience function that generates a lookup table with boolean
+ * true as value.
+ * @param $list List of values to turn into a lookup
+ * @note You can also pass an arbitrary number of arguments in
+ * place of the regular argument
+ * @return Lookup array equivalent of list
+ */
+ public function makeLookup($list) {
+ if (is_string($list)) $list = func_get_args();
+ $ret = array();
+ foreach ($list as $value) {
+ if (is_null($value)) continue;
+ $ret[$value] = true;
+ }
+ return $ret;
+ }
+
+ /**
+ * Lazy load construction of the module after determining whether
+ * or not it's needed, and also when a finalized configuration object
+ * is available.
+ * @param $config Instance of HTMLPurifier_Config
+ */
+ public function setup($config) {}
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Bi-directional Text Module, defines elements that
+ * declare directionality of content. Text Extension Module.
+ */
+class HTMLPurifier_HTMLModule_Bdo extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Bdo';
+ public $attr_collections = array(
+ 'I18N' => array('dir' => false)
+ );
+
+ public function setup($config) {
+ $bdo = $this->addElement(
+ 'bdo', 'Inline', 'Inline', array('Core', 'Lang'),
+ array(
+ 'dir' => 'Enum#ltr,rtl', // required
+ // The Abstract Module specification has the attribute
+ // inclusions wrong for bdo: bdo allows Lang
+ )
+ );
+ $bdo->attr_transform_post['required-dir'] = new HTMLPurifier_AttrTransform_BdoDir();
+
+ $this->attr_collections['I18N']['dir'] = 'Enum#ltr,rtl';
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModule_CommonAttributes extends HTMLPurifier_HTMLModule
+{
+ public $name = 'CommonAttributes';
+
+ public $attr_collections = array(
+ 'Core' => array(
+ 0 => array('Style'),
+ // 'xml:space' => false,
+ 'class' => 'Class',
+ 'id' => 'ID',
+ 'title' => 'CDATA',
+ ),
+ 'Lang' => array(),
+ 'I18N' => array(
+ 0 => array('Lang'), // proprietary, for xml:lang/lang
+ ),
+ 'Common' => array(
+ 0 => array('Core', 'I18N')
+ )
+ );
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Edit Module, defines editing-related elements. Text Extension
+ * Module.
+ */
+class HTMLPurifier_HTMLModule_Edit extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Edit';
+
+ public function setup($config) {
+ $contents = 'Chameleon: #PCDATA | Inline ! #PCDATA | Flow';
+ $attr = array(
+ 'cite' => 'URI',
+ // 'datetime' => 'Datetime', // not implemented
+ );
+ $this->addElement('del', 'Inline', $contents, 'Common', $attr);
+ $this->addElement('ins', 'Inline', $contents, 'Common', $attr);
+ }
+
+ // HTML 4.01 specifies that ins/del must not contain block
+ // elements when used in an inline context, chameleon is
+ // a complicated workaround to acheive this effect
+
+ // Inline context ! Block context (exclamation mark is
+ // separator, see getChildDef for parsing)
+
+ public $defines_child_def = true;
+ public function getChildDef($def) {
+ if ($def->content_model_type != 'chameleon') return false;
+ $value = explode('!', $def->content_model);
+ return new HTMLPurifier_ChildDef_Chameleon($value[0], $value[1]);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Forms module, defines all form-related elements found in HTML 4.
+ */
+class HTMLPurifier_HTMLModule_Forms extends HTMLPurifier_HTMLModule
+{
+ public $name = 'Forms';
+ public $safe = false;
+
+ public $content_sets = array(
+ 'Block' => 'Form',
+ 'Inline' => 'Formctrl',
+ );
+
+ public function setup($config) {
+ $form = $this->addElement('form', 'Form',
+ 'Required: Heading | List | Block | fieldset', 'Common', array(
+ 'accept' => 'ContentTypes',
+ 'accept-charset' => 'Charsets',
+ 'action*' => 'URI',
+ 'method' => 'Enum#get,post',
+ // really ContentType, but these two are the only ones used today
+ 'enctype' => 'Enum#application/x-www-form-urlencoded,multipart/form-data',
+ ));
+ $form->excludes = array('form' => true);
+
+ $input = $this->addElement('input', 'Formctrl', 'Empty', 'Common', array(
+ 'accept' => 'ContentTypes',
+ 'accesskey' => 'Character',
+ 'alt' => 'Text',
+ 'checked' => 'Bool#checked',
+ 'disabled' => 'Bool#disabled',
+ 'maxlength' => 'Number',
+ 'name' => 'CDATA',
+ 'readonly' => 'Bool#readonly',
+ 'size' => 'Number',
+ 'src' => 'URI#embeds',
+ 'tabindex' => 'Number',
+ 'type' => 'Enum#text,password,checkbox,button,radio,submit,reset,file,hidden,image',
+ 'value' => 'CDATA',
+ ));
+ $input->attr_transform_post[] = new HTMLPurifier_AttrTransform_Input();
+
+ $this->addElement('select', 'Formctrl', 'Required: optgroup | option', 'Common', array(
+ 'disabled' => 'Bool#disabled',
+ 'multiple' => 'Bool#multiple',
+ 'name' => 'CDATA',
+ 'size' => 'Number',
+ 'tabindex' => 'Number',
+ ));
+
+ $this->addElement('option', false, 'Optional: #PCDATA', 'Common', array(
+ 'disabled' => 'Bool#disabled',
+ 'label' => 'Text',
+ 'selected' => 'Bool#selected',
+ 'value' => 'CDATA',
+ ));
+ // It's illegal for there to be more than one selected, but not
+ // be multiple. Also, no selected means undefined behavior. This might
+ // be difficult to implement; perhaps an injector, or a context variable.
+
+ $textarea = $this->addElement('textarea', 'Formctrl', 'Optional: #PCDATA', 'Common', array(
+ 'accesskey' => 'Character',
+ 'cols*' => 'Number',
+ 'disabled' => 'Bool#disabled',
+ 'name' => 'CDATA',
+ 'readonly' => 'Bool#readonly',
+ 'rows*' => 'Number',
+ 'tabindex' => 'Number',
+ ));
+ $textarea->attr_transform_pre[] = new HTMLPurifier_AttrTransform_Textarea();
+
+ $button = $this->addElement('button', 'Formctrl', 'Optional: #PCDATA | Heading | List | Block | Inline', 'Common', array(
+ 'accesskey' => 'Character',
+ 'disabled' => 'Bool#disabled',
+ 'name' => 'CDATA',
+ 'tabindex' => 'Number',
+ 'type' => 'Enum#button,submit,reset',
+ 'value' => 'CDATA',
+ ));
+
+ // For exclusions, ideally we'd specify content sets, not literal elements
+ $button->excludes = $this->makeLookup(
+ 'form', 'fieldset', // Form
+ 'input', 'select', 'textarea', 'label', 'button', // Formctrl
+ 'a' // as per HTML 4.01 spec, this is omitted by modularization
+ );
+
+ // Extra exclusion: img usemap="" is not permitted within this element.
+ // We'll omit this for now, since we don't have any good way of
+ // indicating it yet.
+
+ // This is HIGHLY user-unfriendly; we need a custom child-def for this
+ $this->addElement('fieldset', 'Form', 'Custom: (#WS?,legend,(Flow|#PCDATA)*)', 'Common');
+
+ $label = $this->addElement('label', 'Formctrl', 'Optional: #PCDATA | Inline', 'Common', array(
+ 'accesskey' => 'Character',
+ // 'for' => 'IDREF', // IDREF not implemented, cannot allow
+ ));
+ $label->excludes = array('label' => true);
+
+ $this->addElement('legend', false, 'Optional: #PCDATA | Inline', 'Common', array(
+ 'accesskey' => 'Character',
+ ));
+
+ $this->addElement('optgroup', false, 'Required: option', 'Common', array(
+ 'disabled' => 'Bool#disabled',
+ 'label*' => 'Text',
+ ));
+
+ // Don't forget an injector for <isindex>. This one's a little complex
+ // because it maps to multiple elements.
+
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Hypertext Module, defines hypertext links. Core Module.
+ */
+class HTMLPurifier_HTMLModule_Hypertext extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Hypertext';
+
+ public function setup($config) {
+ $a = $this->addElement(
+ 'a', 'Inline', 'Inline', 'Common',
+ array(
+ // 'accesskey' => 'Character',
+ // 'charset' => 'Charset',
+ 'href' => 'URI',
+ // 'hreflang' => 'LanguageCode',
+ 'rel' => new HTMLPurifier_AttrDef_HTML_LinkTypes('rel'),
+ 'rev' => new HTMLPurifier_AttrDef_HTML_LinkTypes('rev'),
+ // 'tabindex' => 'Number',
+ // 'type' => 'ContentType',
+ )
+ );
+ $a->formatting = true;
+ $a->excludes = array('a' => true);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Image Module provides basic image embedding.
+ * @note There is specialized code for removing empty images in
+ * HTMLPurifier_Strategy_RemoveForeignElements
+ */
+class HTMLPurifier_HTMLModule_Image extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Image';
+
+ public function setup($config) {
+ $max = $config->get('HTML.MaxImgLength');
+ $img = $this->addElement(
+ 'img', 'Inline', 'Empty', 'Common',
+ array(
+ 'alt*' => 'Text',
+ // According to the spec, it's Length, but percents can
+ // be abused, so we allow only Pixels.
+ 'height' => 'Pixels#' . $max,
+ 'width' => 'Pixels#' . $max,
+ 'longdesc' => 'URI',
+ 'src*' => new HTMLPurifier_AttrDef_URI(true), // embedded
+ )
+ );
+ if ($max === null || $config->get('HTML.Trusted')) {
+ $img->attr['height'] =
+ $img->attr['width'] = 'Length';
+ }
+
+ // kind of strange, but splitting things up would be inefficient
+ $img->attr_transform_pre[] =
+ $img->attr_transform_post[] =
+ new HTMLPurifier_AttrTransform_ImgRequired();
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Legacy module defines elements that were previously
+ * deprecated.
+ *
+ * @note Not all legacy elements have been implemented yet, which
+ * is a bit of a reverse problem as compared to browsers! In
+ * addition, this legacy module may implement a bit more than
+ * mandated by XHTML 1.1.
+ *
+ * This module can be used in combination with TransformToStrict in order
+ * to transform as many deprecated elements as possible, but retain
+ * questionably deprecated elements that do not have good alternatives
+ * as well as transform elements that don't have an implementation.
+ * See docs/ref-strictness.txt for more details.
+ */
+
+class HTMLPurifier_HTMLModule_Legacy extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Legacy';
+
+ public function setup($config) {
+
+ $this->addElement('basefont', 'Inline', 'Empty', false, array(
+ 'color' => 'Color',
+ 'face' => 'Text', // extremely broad, we should
+ 'size' => 'Text', // tighten it
+ 'id' => 'ID'
+ ));
+ $this->addElement('center', 'Block', 'Flow', 'Common');
+ $this->addElement('dir', 'Block', 'Required: li', 'Common', array(
+ 'compact' => 'Bool#compact'
+ ));
+ $this->addElement('font', 'Inline', 'Inline', array('Core', 'I18N'), array(
+ 'color' => 'Color',
+ 'face' => 'Text', // extremely broad, we should
+ 'size' => 'Text', // tighten it
+ ));
+ $this->addElement('menu', 'Block', 'Required: li', 'Common', array(
+ 'compact' => 'Bool#compact'
+ ));
+
+ $s = $this->addElement('s', 'Inline', 'Inline', 'Common');
+ $s->formatting = true;
+
+ $strike = $this->addElement('strike', 'Inline', 'Inline', 'Common');
+ $strike->formatting = true;
+
+ $u = $this->addElement('u', 'Inline', 'Inline', 'Common');
+ $u->formatting = true;
+
+ // setup modifications to old elements
+
+ $align = 'Enum#left,right,center,justify';
+
+ $address = $this->addBlankElement('address');
+ $address->content_model = 'Inline | #PCDATA | p';
+ $address->content_model_type = 'optional';
+ $address->child = false;
+
+ $blockquote = $this->addBlankElement('blockquote');
+ $blockquote->content_model = 'Flow | #PCDATA';
+ $blockquote->content_model_type = 'optional';
+ $blockquote->child = false;
+
+ $br = $this->addBlankElement('br');
+ $br->attr['clear'] = 'Enum#left,all,right,none';
+
+ $caption = $this->addBlankElement('caption');
+ $caption->attr['align'] = 'Enum#top,bottom,left,right';
+
+ $div = $this->addBlankElement('div');
+ $div->attr['align'] = $align;
+
+ $dl = $this->addBlankElement('dl');
+ $dl->attr['compact'] = 'Bool#compact';
+
+ for ($i = 1; $i <= 6; $i++) {
+ $h = $this->addBlankElement("h$i");
+ $h->attr['align'] = $align;
+ }
+
+ $hr = $this->addBlankElement('hr');
+ $hr->attr['align'] = $align;
+ $hr->attr['noshade'] = 'Bool#noshade';
+ $hr->attr['size'] = 'Pixels';
+ $hr->attr['width'] = 'Length';
+
+ $img = $this->addBlankElement('img');
+ $img->attr['align'] = 'Enum#top,middle,bottom,left,right';
+ $img->attr['border'] = 'Pixels';
+ $img->attr['hspace'] = 'Pixels';
+ $img->attr['vspace'] = 'Pixels';
+
+ // figure out this integer business
+
+ $li = $this->addBlankElement('li');
+ $li->attr['value'] = new HTMLPurifier_AttrDef_Integer();
+ $li->attr['type'] = 'Enum#s:1,i,I,a,A,disc,square,circle';
+
+ $ol = $this->addBlankElement('ol');
+ $ol->attr['compact'] = 'Bool#compact';
+ $ol->attr['start'] = new HTMLPurifier_AttrDef_Integer();
+ $ol->attr['type'] = 'Enum#s:1,i,I,a,A';
+
+ $p = $this->addBlankElement('p');
+ $p->attr['align'] = $align;
+
+ $pre = $this->addBlankElement('pre');
+ $pre->attr['width'] = 'Number';
+
+ // script omitted
+
+ $table = $this->addBlankElement('table');
+ $table->attr['align'] = 'Enum#left,center,right';
+ $table->attr['bgcolor'] = 'Color';
+
+ $tr = $this->addBlankElement('tr');
+ $tr->attr['bgcolor'] = 'Color';
+
+ $th = $this->addBlankElement('th');
+ $th->attr['bgcolor'] = 'Color';
+ $th->attr['height'] = 'Length';
+ $th->attr['nowrap'] = 'Bool#nowrap';
+ $th->attr['width'] = 'Length';
+
+ $td = $this->addBlankElement('td');
+ $td->attr['bgcolor'] = 'Color';
+ $td->attr['height'] = 'Length';
+ $td->attr['nowrap'] = 'Bool#nowrap';
+ $td->attr['width'] = 'Length';
+
+ $ul = $this->addBlankElement('ul');
+ $ul->attr['compact'] = 'Bool#compact';
+ $ul->attr['type'] = 'Enum#square,disc,circle';
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 List Module, defines list-oriented elements. Core Module.
+ */
+class HTMLPurifier_HTMLModule_List extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'List';
+
+ // According to the abstract schema, the List content set is a fully formed
+ // one or more expr, but it invariably occurs in an optional declaration
+ // so we're not going to do that subtlety. It might cause trouble
+ // if a user defines "List" and expects that multiple lists are
+ // allowed to be specified, but then again, that's not very intuitive.
+ // Furthermore, the actual XML Schema may disagree. Regardless,
+ // we don't have support for such nested expressions without using
+ // the incredibly inefficient and draconic Custom ChildDef.
+
+ public $content_sets = array('Flow' => 'List');
+
+ public function setup($config) {
+ $this->addElement('ol', 'List', 'Required: li', 'Common');
+ $this->addElement('ul', 'List', 'Required: li', 'Common');
+ $this->addElement('dl', 'List', 'Required: dt | dd', 'Common');
+
+ $this->addElement('li', false, 'Flow', 'Common');
+
+ $this->addElement('dd', false, 'Flow', 'Common');
+ $this->addElement('dt', false, 'Inline', 'Common');
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModule_Name extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Name';
+
+ public function setup($config) {
+ $elements = array('a', 'applet', 'form', 'frame', 'iframe', 'img', 'map');
+ foreach ($elements as $name) {
+ $element = $this->addBlankElement($name);
+ $element->attr['name'] = 'CDATA';
+ if (!$config->get('HTML.Attr.Name.UseCDATA')) {
+ $element->attr_transform_post['NameSync'] = new HTMLPurifier_AttrTransform_NameSync();
+ }
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModule_NonXMLCommonAttributes extends HTMLPurifier_HTMLModule
+{
+ public $name = 'NonXMLCommonAttributes';
+
+ public $attr_collections = array(
+ 'Lang' => array(
+ 'lang' => 'LanguageCode',
+ )
+ );
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Object Module, defines elements for generic object inclusion
+ * @warning Users will commonly use <embed> to cater to legacy browsers: this
+ * module does not allow this sort of behavior
+ */
+class HTMLPurifier_HTMLModule_Object extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Object';
+ public $safe = false;
+
+ public function setup($config) {
+
+ $this->addElement('object', 'Inline', 'Optional: #PCDATA | Flow | param', 'Common',
+ array(
+ 'archive' => 'URI',
+ 'classid' => 'URI',
+ 'codebase' => 'URI',
+ 'codetype' => 'Text',
+ 'data' => 'URI',
+ 'declare' => 'Bool#declare',
+ 'height' => 'Length',
+ 'name' => 'CDATA',
+ 'standby' => 'Text',
+ 'tabindex' => 'Number',
+ 'type' => 'ContentType',
+ 'width' => 'Length'
+ )
+ );
+
+ $this->addElement('param', false, 'Empty', false,
+ array(
+ 'id' => 'ID',
+ 'name*' => 'Text',
+ 'type' => 'Text',
+ 'value' => 'Text',
+ 'valuetype' => 'Enum#data,ref,object'
+ )
+ );
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Presentation Module, defines simple presentation-related
+ * markup. Text Extension Module.
+ * @note The official XML Schema and DTD specs further divide this into
+ * two modules:
+ * - Block Presentation (hr)
+ * - Inline Presentation (b, big, i, small, sub, sup, tt)
+ * We have chosen not to heed this distinction, as content_sets
+ * provides satisfactory disambiguation.
+ */
+class HTMLPurifier_HTMLModule_Presentation extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Presentation';
+
+ public function setup($config) {
+ $this->addElement('hr', 'Block', 'Empty', 'Common');
+ $this->addElement('sub', 'Inline', 'Inline', 'Common');
+ $this->addElement('sup', 'Inline', 'Inline', 'Common');
+ $b = $this->addElement('b', 'Inline', 'Inline', 'Common');
+ $b->formatting = true;
+ $big = $this->addElement('big', 'Inline', 'Inline', 'Common');
+ $big->formatting = true;
+ $i = $this->addElement('i', 'Inline', 'Inline', 'Common');
+ $i->formatting = true;
+ $small = $this->addElement('small', 'Inline', 'Inline', 'Common');
+ $small->formatting = true;
+ $tt = $this->addElement('tt', 'Inline', 'Inline', 'Common');
+ $tt->formatting = true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Module defines proprietary tags and attributes in HTML.
+ * @warning If this module is enabled, standards-compliance is off!
+ */
+class HTMLPurifier_HTMLModule_Proprietary extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Proprietary';
+
+ public function setup($config) {
+
+ $this->addElement('marquee', 'Inline', 'Flow', 'Common',
+ array(
+ 'direction' => 'Enum#left,right,up,down',
+ 'behavior' => 'Enum#alternate',
+ 'width' => 'Length',
+ 'height' => 'Length',
+ 'scrolldelay' => 'Number',
+ 'scrollamount' => 'Number',
+ 'loop' => 'Number',
+ 'bgcolor' => 'Color',
+ 'hspace' => 'Pixels',
+ 'vspace' => 'Pixels',
+ )
+ );
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Ruby Annotation Module, defines elements that indicate
+ * short runs of text alongside base text for annotation or pronounciation.
+ */
+class HTMLPurifier_HTMLModule_Ruby extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Ruby';
+
+ public function setup($config) {
+ $this->addElement('ruby', 'Inline',
+ 'Custom: ((rb, (rt | (rp, rt, rp))) | (rbc, rtc, rtc?))',
+ 'Common');
+ $this->addElement('rbc', false, 'Required: rb', 'Common');
+ $this->addElement('rtc', false, 'Required: rt', 'Common');
+ $rb = $this->addElement('rb', false, 'Inline', 'Common');
+ $rb->excludes = array('ruby' => true);
+ $rt = $this->addElement('rt', false, 'Inline', 'Common', array('rbspan' => 'Number'));
+ $rt->excludes = array('ruby' => true);
+ $this->addElement('rp', false, 'Optional: #PCDATA', 'Common');
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * A "safe" embed module. See SafeObject. This is a proprietary element.
+ */
+class HTMLPurifier_HTMLModule_SafeEmbed extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'SafeEmbed';
+
+ public function setup($config) {
+
+ $max = $config->get('HTML.MaxImgLength');
+ $embed = $this->addElement(
+ 'embed', 'Inline', 'Empty', 'Common',
+ array(
+ 'src*' => 'URI#embedded',
+ 'type' => 'Enum#application/x-shockwave-flash',
+ 'width' => 'Pixels#' . $max,
+ 'height' => 'Pixels#' . $max,
+ 'allowscriptaccess' => 'Enum#never',
+ 'allownetworking' => 'Enum#internal',
+ 'wmode' => 'Enum#window',
+ 'name' => 'ID',
+ )
+ );
+ $embed->attr_transform_post[] = new HTMLPurifier_AttrTransform_SafeEmbed();
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * A "safe" object module. In theory, objects permitted by this module will
+ * be safe, and untrusted users can be allowed to embed arbitrary flash objects
+ * (maybe other types too, but only Flash is supported as of right now).
+ * Highly experimental.
+ */
+class HTMLPurifier_HTMLModule_SafeObject extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'SafeObject';
+
+ public function setup($config) {
+
+ // These definitions are not intrinsically safe: the attribute transforms
+ // are a vital part of ensuring safety.
+
+ $max = $config->get('HTML.MaxImgLength');
+ $object = $this->addElement(
+ 'object',
+ 'Inline',
+ 'Optional: param | Flow | #PCDATA',
+ 'Common',
+ array(
+ // While technically not required by the spec, we're forcing
+ // it to this value.
+ 'type' => 'Enum#application/x-shockwave-flash',
+ 'width' => 'Pixels#' . $max,
+ 'height' => 'Pixels#' . $max,
+ 'data' => 'URI#embedded'
+ )
+ );
+ $object->attr_transform_post[] = new HTMLPurifier_AttrTransform_SafeObject();
+
+ $param = $this->addElement('param', false, 'Empty', false,
+ array(
+ 'id' => 'ID',
+ 'name*' => 'Text',
+ 'value' => 'Text'
+ )
+ );
+ $param->attr_transform_post[] = new HTMLPurifier_AttrTransform_SafeParam();
+ $this->info_injector[] = 'SafeObject';
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/*
+
+WARNING: THIS MODULE IS EXTREMELY DANGEROUS AS IT ENABLES INLINE SCRIPTING
+INSIDE HTML PURIFIER DOCUMENTS. USE ONLY WITH TRUSTED USER INPUT!!!
+
+*/
+
+/**
+ * XHTML 1.1 Scripting module, defines elements that are used to contain
+ * information pertaining to executable scripts or the lack of support
+ * for executable scripts.
+ * @note This module does not contain inline scripting elements
+ */
+class HTMLPurifier_HTMLModule_Scripting extends HTMLPurifier_HTMLModule
+{
+ public $name = 'Scripting';
+ public $elements = array('script', 'noscript');
+ public $content_sets = array('Block' => 'script | noscript', 'Inline' => 'script | noscript');
+ public $safe = false;
+
+ public function setup($config) {
+ // TODO: create custom child-definition for noscript that
+ // auto-wraps stray #PCDATA in a similar manner to
+ // blockquote's custom definition (we would use it but
+ // blockquote's contents are optional while noscript's contents
+ // are required)
+
+ // TODO: convert this to new syntax, main problem is getting
+ // both content sets working
+
+ // In theory, this could be safe, but I don't see any reason to
+ // allow it.
+ $this->info['noscript'] = new HTMLPurifier_ElementDef();
+ $this->info['noscript']->attr = array( 0 => array('Common') );
+ $this->info['noscript']->content_model = 'Heading | List | Block';
+ $this->info['noscript']->content_model_type = 'required';
+
+ $this->info['script'] = new HTMLPurifier_ElementDef();
+ $this->info['script']->attr = array(
+ 'defer' => new HTMLPurifier_AttrDef_Enum(array('defer')),
+ 'src' => new HTMLPurifier_AttrDef_URI(true),
+ 'type' => new HTMLPurifier_AttrDef_Enum(array('text/javascript'))
+ );
+ $this->info['script']->content_model = '#PCDATA';
+ $this->info['script']->content_model_type = 'optional';
+ $this->info['script']->attr_transform_pre['type'] =
+ $this->info['script']->attr_transform_post['type'] =
+ new HTMLPurifier_AttrTransform_ScriptRequired();
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Edit Module, defines editing-related elements. Text Extension
+ * Module.
+ */
+class HTMLPurifier_HTMLModule_StyleAttribute extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'StyleAttribute';
+ public $attr_collections = array(
+ // The inclusion routine differs from the Abstract Modules but
+ // is in line with the DTD and XML Schemas.
+ 'Style' => array('style' => false), // see constructor
+ 'Core' => array(0 => array('Style'))
+ );
+
+ public function setup($config) {
+ $this->attr_collections['Style']['style'] = new HTMLPurifier_AttrDef_CSS();
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Tables Module, fully defines accessible table elements.
+ */
+class HTMLPurifier_HTMLModule_Tables extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Tables';
+
+ public function setup($config) {
+
+ $this->addElement('caption', false, 'Inline', 'Common');
+
+ $this->addElement('table', 'Block',
+ new HTMLPurifier_ChildDef_Table(), 'Common',
+ array(
+ 'border' => 'Pixels',
+ 'cellpadding' => 'Length',
+ 'cellspacing' => 'Length',
+ 'frame' => 'Enum#void,above,below,hsides,lhs,rhs,vsides,box,border',
+ 'rules' => 'Enum#none,groups,rows,cols,all',
+ 'summary' => 'Text',
+ 'width' => 'Length'
+ )
+ );
+
+ // common attributes
+ $cell_align = array(
+ 'align' => 'Enum#left,center,right,justify,char',
+ 'charoff' => 'Length',
+ 'valign' => 'Enum#top,middle,bottom,baseline',
+ );
+
+ $cell_t = array_merge(
+ array(
+ 'abbr' => 'Text',
+ 'colspan' => 'Number',
+ 'rowspan' => 'Number',
+ ),
+ $cell_align
+ );
+ $this->addElement('td', false, 'Flow', 'Common', $cell_t);
+ $this->addElement('th', false, 'Flow', 'Common', $cell_t);
+
+ $this->addElement('tr', false, 'Required: td | th', 'Common', $cell_align);
+
+ $cell_col = array_merge(
+ array(
+ 'span' => 'Number',
+ 'width' => 'MultiLength',
+ ),
+ $cell_align
+ );
+ $this->addElement('col', false, 'Empty', 'Common', $cell_col);
+ $this->addElement('colgroup', false, 'Optional: col', 'Common', $cell_col);
+
+ $this->addElement('tbody', false, 'Required: tr', 'Common', $cell_align);
+ $this->addElement('thead', false, 'Required: tr', 'Common', $cell_align);
+ $this->addElement('tfoot', false, 'Required: tr', 'Common', $cell_align);
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Target Module, defines target attribute in link elements.
+ */
+class HTMLPurifier_HTMLModule_Target extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Target';
+
+ public function setup($config) {
+ $elements = array('a');
+ foreach ($elements as $name) {
+ $e = $this->addBlankElement($name);
+ $e->attr = array(
+ 'target' => new HTMLPurifier_AttrDef_HTML_FrameTarget()
+ );
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * XHTML 1.1 Text Module, defines basic text containers. Core Module.
+ * @note In the normative XML Schema specification, this module
+ * is further abstracted into the following modules:
+ * - Block Phrasal (address, blockquote, pre, h1, h2, h3, h4, h5, h6)
+ * - Block Structural (div, p)
+ * - Inline Phrasal (abbr, acronym, cite, code, dfn, em, kbd, q, samp, strong, var)
+ * - Inline Structural (br, span)
+ * This module, functionally, does not distinguish between these
+ * sub-modules, but the code is internally structured to reflect
+ * these distinctions.
+ */
+class HTMLPurifier_HTMLModule_Text extends HTMLPurifier_HTMLModule
+{
+
+ public $name = 'Text';
+ public $content_sets = array(
+ 'Flow' => 'Heading | Block | Inline'
+ );
+
+ public function setup($config) {
+
+ // Inline Phrasal -------------------------------------------------
+ $this->addElement('abbr', 'Inline', 'Inline', 'Common');
+ $this->addElement('acronym', 'Inline', 'Inline', 'Common');
+ $this->addElement('cite', 'Inline', 'Inline', 'Common');
+ $this->addElement('dfn', 'Inline', 'Inline', 'Common');
+ $this->addElement('kbd', 'Inline', 'Inline', 'Common');
+ $this->addElement('q', 'Inline', 'Inline', 'Common', array('cite' => 'URI'));
+ $this->addElement('samp', 'Inline', 'Inline', 'Common');
+ $this->addElement('var', 'Inline', 'Inline', 'Common');
+
+ $em = $this->addElement('em', 'Inline', 'Inline', 'Common');
+ $em->formatting = true;
+
+ $strong = $this->addElement('strong', 'Inline', 'Inline', 'Common');
+ $strong->formatting = true;
+
+ $code = $this->addElement('code', 'Inline', 'Inline', 'Common');
+ $code->formatting = true;
+
+ // Inline Structural ----------------------------------------------
+ $this->addElement('span', 'Inline', 'Inline', 'Common');
+ $this->addElement('br', 'Inline', 'Empty', 'Core');
+
+ // Block Phrasal --------------------------------------------------
+ $this->addElement('address', 'Block', 'Inline', 'Common');
+ $this->addElement('blockquote', 'Block', 'Optional: Heading | Block | List', 'Common', array('cite' => 'URI') );
+ $pre = $this->addElement('pre', 'Block', 'Inline', 'Common');
+ $pre->excludes = $this->makeLookup(
+ 'img', 'big', 'small', 'object', 'applet', 'font', 'basefont' );
+ $this->addElement('h1', 'Heading', 'Inline', 'Common');
+ $this->addElement('h2', 'Heading', 'Inline', 'Common');
+ $this->addElement('h3', 'Heading', 'Inline', 'Common');
+ $this->addElement('h4', 'Heading', 'Inline', 'Common');
+ $this->addElement('h5', 'Heading', 'Inline', 'Common');
+ $this->addElement('h6', 'Heading', 'Inline', 'Common');
+
+ // Block Structural -----------------------------------------------
+ $p = $this->addElement('p', 'Block', 'Inline', 'Common');
+ $p->autoclose = array_flip(array("address", "blockquote", "center", "dir", "div", "dl", "fieldset", "ol", "p", "ul"));
+
+ $this->addElement('div', 'Block', 'Flow', 'Common');
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Abstract class for a set of proprietary modules that clean up (tidy)
+ * poorly written HTML.
+ * @todo Figure out how to protect some of these methods/properties
+ */
+class HTMLPurifier_HTMLModule_Tidy extends HTMLPurifier_HTMLModule
+{
+
+ /**
+ * List of supported levels. Index zero is a special case "no fixes"
+ * level.
+ */
+ public $levels = array(0 => 'none', 'light', 'medium', 'heavy');
+
+ /**
+ * Default level to place all fixes in. Disabled by default
+ */
+ public $defaultLevel = null;
+
+ /**
+ * Lists of fixes used by getFixesForLevel(). Format is:
+ * HTMLModule_Tidy->fixesForLevel[$level] = array('fix-1', 'fix-2');
+ */
+ public $fixesForLevel = array(
+ 'light' => array(),
+ 'medium' => array(),
+ 'heavy' => array()
+ );
+
+ /**
+ * Lazy load constructs the module by determining the necessary
+ * fixes to create and then delegating to the populate() function.
+ * @todo Wildcard matching and error reporting when an added or
+ * subtracted fix has no effect.
+ */
+ public function setup($config) {
+
+ // create fixes, initialize fixesForLevel
+ $fixes = $this->makeFixes();
+ $this->makeFixesForLevel($fixes);
+
+ // figure out which fixes to use
+ $level = $config->get('HTML.TidyLevel');
+ $fixes_lookup = $this->getFixesForLevel($level);
+
+ // get custom fix declarations: these need namespace processing
+ $add_fixes = $config->get('HTML.TidyAdd');
+ $remove_fixes = $config->get('HTML.TidyRemove');
+
+ foreach ($fixes as $name => $fix) {
+ // needs to be refactored a little to implement globbing
+ if (
+ isset($remove_fixes[$name]) ||
+ (!isset($add_fixes[$name]) && !isset($fixes_lookup[$name]))
+ ) {
+ unset($fixes[$name]);
+ }
+ }
+
+ // populate this module with necessary fixes
+ $this->populate($fixes);
+
+ }
+
+ /**
+ * Retrieves all fixes per a level, returning fixes for that specific
+ * level as well as all levels below it.
+ * @param $level String level identifier, see $levels for valid values
+ * @return Lookup up table of fixes
+ */
+ public function getFixesForLevel($level) {
+ if ($level == $this->levels[0]) {
+ return array();
+ }
+ $activated_levels = array();
+ for ($i = 1, $c = count($this->levels); $i < $c; $i++) {
+ $activated_levels[] = $this->levels[$i];
+ if ($this->levels[$i] == $level) break;
+ }
+ if ($i == $c) {
+ trigger_error(
+ 'Tidy level ' . htmlspecialchars($level) . ' not recognized',
+ E_USER_WARNING
+ );
+ return array();
+ }
+ $ret = array();
+ foreach ($activated_levels as $level) {
+ foreach ($this->fixesForLevel[$level] as $fix) {
+ $ret[$fix] = true;
+ }
+ }
+ return $ret;
+ }
+
+ /**
+ * Dynamically populates the $fixesForLevel member variable using
+ * the fixes array. It may be custom overloaded, used in conjunction
+ * with $defaultLevel, or not used at all.
+ */
+ public function makeFixesForLevel($fixes) {
+ if (!isset($this->defaultLevel)) return;
+ if (!isset($this->fixesForLevel[$this->defaultLevel])) {
+ trigger_error(
+ 'Default level ' . $this->defaultLevel . ' does not exist',
+ E_USER_ERROR
+ );
+ return;
+ }
+ $this->fixesForLevel[$this->defaultLevel] = array_keys($fixes);
+ }
+
+ /**
+ * Populates the module with transforms and other special-case code
+ * based on a list of fixes passed to it
+ * @param $lookup Lookup table of fixes to activate
+ */
+ public function populate($fixes) {
+ foreach ($fixes as $name => $fix) {
+ // determine what the fix is for
+ list($type, $params) = $this->getFixType($name);
+ switch ($type) {
+ case 'attr_transform_pre':
+ case 'attr_transform_post':
+ $attr = $params['attr'];
+ if (isset($params['element'])) {
+ $element = $params['element'];
+ if (empty($this->info[$element])) {
+ $e = $this->addBlankElement($element);
+ } else {
+ $e = $this->info[$element];
+ }
+ } else {
+ $type = "info_$type";
+ $e = $this;
+ }
+ // PHP does some weird parsing when I do
+ // $e->$type[$attr], so I have to assign a ref.
+ $f =& $e->$type;
+ $f[$attr] = $fix;
+ break;
+ case 'tag_transform':
+ $this->info_tag_transform[$params['element']] = $fix;
+ break;
+ case 'child':
+ case 'content_model_type':
+ $element = $params['element'];
+ if (empty($this->info[$element])) {
+ $e = $this->addBlankElement($element);
+ } else {
+ $e = $this->info[$element];
+ }
+ $e->$type = $fix;
+ break;
+ default:
+ trigger_error("Fix type $type not supported", E_USER_ERROR);
+ break;
+ }
+ }
+ }
+
+ /**
+ * Parses a fix name and determines what kind of fix it is, as well
+ * as other information defined by the fix
+ * @param $name String name of fix
+ * @return array(string $fix_type, array $fix_parameters)
+ * @note $fix_parameters is type dependant, see populate() for usage
+ * of these parameters
+ */
+ public function getFixType($name) {
+ // parse it
+ $property = $attr = null;
+ if (strpos($name, '#') !== false) list($name, $property) = explode('#', $name);
+ if (strpos($name, '@') !== false) list($name, $attr) = explode('@', $name);
+
+ // figure out the parameters
+ $params = array();
+ if ($name !== '') $params['element'] = $name;
+ if (!is_null($attr)) $params['attr'] = $attr;
+
+ // special case: attribute transform
+ if (!is_null($attr)) {
+ if (is_null($property)) $property = 'pre';
+ $type = 'attr_transform_' . $property;
+ return array($type, $params);
+ }
+
+ // special case: tag transform
+ if (is_null($property)) {
+ return array('tag_transform', $params);
+ }
+
+ return array($property, $params);
+
+ }
+
+ /**
+ * Defines all fixes the module will perform in a compact
+ * associative array of fix name to fix implementation.
+ */
+ public function makeFixes() {}
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Name is deprecated, but allowed in strict doctypes, so onl
+ */
+class HTMLPurifier_HTMLModule_Tidy_Name extends HTMLPurifier_HTMLModule_Tidy
+{
+ public $name = 'Tidy_Name';
+ public $defaultLevel = 'heavy';
+ public function makeFixes() {
+
+ $r = array();
+
+ // @name for img, a -----------------------------------------------
+ // Technically, it's allowed even on strict, so we allow authors to use
+ // it. However, it's deprecated in future versions of XHTML.
+ $r['img@name'] =
+ $r['a@name'] = new HTMLPurifier_AttrTransform_Name();
+
+ return $r;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModule_Tidy_Proprietary extends HTMLPurifier_HTMLModule_Tidy
+{
+
+ public $name = 'Tidy_Proprietary';
+ public $defaultLevel = 'light';
+
+ public function makeFixes() {
+ $r = array();
+ $r['table@background'] = new HTMLPurifier_AttrTransform_Background();
+ $r['td@background'] = new HTMLPurifier_AttrTransform_Background();
+ $r['th@background'] = new HTMLPurifier_AttrTransform_Background();
+ $r['tr@background'] = new HTMLPurifier_AttrTransform_Background();
+ $r['thead@background'] = new HTMLPurifier_AttrTransform_Background();
+ $r['tfoot@background'] = new HTMLPurifier_AttrTransform_Background();
+ $r['tbody@background'] = new HTMLPurifier_AttrTransform_Background();
+ return $r;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModule_Tidy_Strict extends HTMLPurifier_HTMLModule_Tidy_XHTMLAndHTML4
+{
+ public $name = 'Tidy_Strict';
+ public $defaultLevel = 'light';
+
+ public function makeFixes() {
+ $r = parent::makeFixes();
+ $r['blockquote#content_model_type'] = 'strictblockquote';
+ return $r;
+ }
+
+ public $defines_child_def = true;
+ public function getChildDef($def) {
+ if ($def->content_model_type != 'strictblockquote') return parent::getChildDef($def);
+ return new HTMLPurifier_ChildDef_StrictBlockquote($def->content_model);
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModule_Tidy_Transitional extends HTMLPurifier_HTMLModule_Tidy_XHTMLAndHTML4
+{
+ public $name = 'Tidy_Transitional';
+ public $defaultLevel = 'heavy';
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModule_Tidy_XHTML extends HTMLPurifier_HTMLModule_Tidy
+{
+
+ public $name = 'Tidy_XHTML';
+ public $defaultLevel = 'medium';
+
+ public function makeFixes() {
+ $r = array();
+ $r['@lang'] = new HTMLPurifier_AttrTransform_Lang();
+ return $r;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModule_Tidy_XHTMLAndHTML4 extends HTMLPurifier_HTMLModule_Tidy
+{
+
+ public function makeFixes() {
+
+ $r = array();
+
+ // == deprecated tag transforms ===================================
+
+ $r['font'] = new HTMLPurifier_TagTransform_Font();
+ $r['menu'] = new HTMLPurifier_TagTransform_Simple('ul');
+ $r['dir'] = new HTMLPurifier_TagTransform_Simple('ul');
+ $r['center'] = new HTMLPurifier_TagTransform_Simple('div', 'text-align:center;');
+ $r['u'] = new HTMLPurifier_TagTransform_Simple('span', 'text-decoration:underline;');
+ $r['s'] = new HTMLPurifier_TagTransform_Simple('span', 'text-decoration:line-through;');
+ $r['strike'] = new HTMLPurifier_TagTransform_Simple('span', 'text-decoration:line-through;');
+
+ // == deprecated attribute transforms =============================
+
+ $r['caption@align'] =
+ new HTMLPurifier_AttrTransform_EnumToCSS('align', array(
+ // we're following IE's behavior, not Firefox's, due
+ // to the fact that no one supports caption-side:right,
+ // W3C included (with CSS 2.1). This is a slightly
+ // unreasonable attribute!
+ 'left' => 'text-align:left;',
+ 'right' => 'text-align:right;',
+ 'top' => 'caption-side:top;',
+ 'bottom' => 'caption-side:bottom;' // not supported by IE
+ ));
+
+ // @align for img -------------------------------------------------
+ $r['img@align'] =
+ new HTMLPurifier_AttrTransform_EnumToCSS('align', array(
+ 'left' => 'float:left;',
+ 'right' => 'float:right;',
+ 'top' => 'vertical-align:top;',
+ 'middle' => 'vertical-align:middle;',
+ 'bottom' => 'vertical-align:baseline;',
+ ));
+
+ // @align for table -----------------------------------------------
+ $r['table@align'] =
+ new HTMLPurifier_AttrTransform_EnumToCSS('align', array(
+ 'left' => 'float:left;',
+ 'center' => 'margin-left:auto;margin-right:auto;',
+ 'right' => 'float:right;'
+ ));
+
+ // @align for hr -----------------------------------------------
+ $r['hr@align'] =
+ new HTMLPurifier_AttrTransform_EnumToCSS('align', array(
+ // we use both text-align and margin because these work
+ // for different browsers (IE and Firefox, respectively)
+ // and the melange makes for a pretty cross-compatible
+ // solution
+ 'left' => 'margin-left:0;margin-right:auto;text-align:left;',
+ 'center' => 'margin-left:auto;margin-right:auto;text-align:center;',
+ 'right' => 'margin-left:auto;margin-right:0;text-align:right;'
+ ));
+
+ // @align for h1, h2, h3, h4, h5, h6, p, div ----------------------
+ // {{{
+ $align_lookup = array();
+ $align_values = array('left', 'right', 'center', 'justify');
+ foreach ($align_values as $v) $align_lookup[$v] = "text-align:$v;";
+ // }}}
+ $r['h1@align'] =
+ $r['h2@align'] =
+ $r['h3@align'] =
+ $r['h4@align'] =
+ $r['h5@align'] =
+ $r['h6@align'] =
+ $r['p@align'] =
+ $r['div@align'] =
+ new HTMLPurifier_AttrTransform_EnumToCSS('align', $align_lookup);
+
+ // @bgcolor for table, tr, td, th ---------------------------------
+ $r['table@bgcolor'] =
+ $r['td@bgcolor'] =
+ $r['th@bgcolor'] =
+ new HTMLPurifier_AttrTransform_BgColor();
+
+ // @border for img ------------------------------------------------
+ $r['img@border'] = new HTMLPurifier_AttrTransform_Border();
+
+ // @clear for br --------------------------------------------------
+ $r['br@clear'] =
+ new HTMLPurifier_AttrTransform_EnumToCSS('clear', array(
+ 'left' => 'clear:left;',
+ 'right' => 'clear:right;',
+ 'all' => 'clear:both;',
+ 'none' => 'clear:none;',
+ ));
+
+ // @height for td, th ---------------------------------------------
+ $r['td@height'] =
+ $r['th@height'] =
+ new HTMLPurifier_AttrTransform_Length('height');
+
+ // @hspace for img ------------------------------------------------
+ $r['img@hspace'] = new HTMLPurifier_AttrTransform_ImgSpace('hspace');
+
+ // @noshade for hr ------------------------------------------------
+ // this transformation is not precise but often good enough.
+ // different browsers use different styles to designate noshade
+ $r['hr@noshade'] =
+ new HTMLPurifier_AttrTransform_BoolToCSS(
+ 'noshade',
+ 'color:#808080;background-color:#808080;border:0;'
+ );
+
+ // @nowrap for td, th ---------------------------------------------
+ $r['td@nowrap'] =
+ $r['th@nowrap'] =
+ new HTMLPurifier_AttrTransform_BoolToCSS(
+ 'nowrap',
+ 'white-space:nowrap;'
+ );
+
+ // @size for hr --------------------------------------------------
+ $r['hr@size'] = new HTMLPurifier_AttrTransform_Length('size', 'height');
+
+ // @type for li, ol, ul -------------------------------------------
+ // {{{
+ $ul_types = array(
+ 'disc' => 'list-style-type:disc;',
+ 'square' => 'list-style-type:square;',
+ 'circle' => 'list-style-type:circle;'
+ );
+ $ol_types = array(
+ '1' => 'list-style-type:decimal;',
+ 'i' => 'list-style-type:lower-roman;',
+ 'I' => 'list-style-type:upper-roman;',
+ 'a' => 'list-style-type:lower-alpha;',
+ 'A' => 'list-style-type:upper-alpha;'
+ );
+ $li_types = $ul_types + $ol_types;
+ // }}}
+
+ $r['ul@type'] = new HTMLPurifier_AttrTransform_EnumToCSS('type', $ul_types);
+ $r['ol@type'] = new HTMLPurifier_AttrTransform_EnumToCSS('type', $ol_types, true);
+ $r['li@type'] = new HTMLPurifier_AttrTransform_EnumToCSS('type', $li_types, true);
+
+ // @vspace for img ------------------------------------------------
+ $r['img@vspace'] = new HTMLPurifier_AttrTransform_ImgSpace('vspace');
+
+ // @width for hr, td, th ------------------------------------------
+ $r['td@width'] =
+ $r['th@width'] =
+ $r['hr@width'] = new HTMLPurifier_AttrTransform_Length('width');
+
+ return $r;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModule_XMLCommonAttributes extends HTMLPurifier_HTMLModule
+{
+ public $name = 'XMLCommonAttributes';
+
+ public $attr_collections = array(
+ 'Lang' => array(
+ 'xml:lang' => 'LanguageCode',
+ )
+ );
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_HTMLModuleManager
+{
+
+ /**
+ * Instance of HTMLPurifier_DoctypeRegistry
+ */
+ public $doctypes;
+
+ /**
+ * Instance of current doctype
+ */
+ public $doctype;
+
+ /**
+ * Instance of HTMLPurifier_AttrTypes
+ */
+ public $attrTypes;
+
+ /**
+ * Active instances of modules for the specified doctype are
+ * indexed, by name, in this array.
+ */
+ public $modules = array();
+
+ /**
+ * Array of recognized HTMLPurifier_Module instances, indexed by
+ * module's class name. This array is usually lazy loaded, but a
+ * user can overload a module by pre-emptively registering it.
+ */
+ public $registeredModules = array();
+
+ /**
+ * List of extra modules that were added by the user using addModule().
+ * These get unconditionally merged into the current doctype, whatever
+ * it may be.
+ */
+ public $userModules = array();
+
+ /**
+ * Associative array of element name to list of modules that have
+ * definitions for the element; this array is dynamically filled.
+ */
+ public $elementLookup = array();
+
+ /** List of prefixes we should use for registering small names */
+ public $prefixes = array('HTMLPurifier_HTMLModule_');
+
+ public $contentSets; /**< Instance of HTMLPurifier_ContentSets */
+ public $attrCollections; /**< Instance of HTMLPurifier_AttrCollections */
+
+ /** If set to true, unsafe elements and attributes will be allowed */
+ public $trusted = false;
+
+ public function __construct() {
+
+ // editable internal objects
+ $this->attrTypes = new HTMLPurifier_AttrTypes();
+ $this->doctypes = new HTMLPurifier_DoctypeRegistry();
+
+ // setup basic modules
+ $common = array(
+ 'CommonAttributes', 'Text', 'Hypertext', 'List',
+ 'Presentation', 'Edit', 'Bdo', 'Tables', 'Image',
+ 'StyleAttribute',
+ // Unsafe:
+ 'Scripting', 'Object', 'Forms',
+ // Sorta legacy, but present in strict:
+ 'Name',
+ );
+ $transitional = array('Legacy', 'Target');
+ $xml = array('XMLCommonAttributes');
+ $non_xml = array('NonXMLCommonAttributes');
+
+ // setup basic doctypes
+ $this->doctypes->register(
+ 'HTML 4.01 Transitional', false,
+ array_merge($common, $transitional, $non_xml),
+ array('Tidy_Transitional', 'Tidy_Proprietary'),
+ array(),
+ '-//W3C//DTD HTML 4.01 Transitional//EN',
+ 'http://www.w3.org/TR/html4/loose.dtd'
+ );
+
+ $this->doctypes->register(
+ 'HTML 4.01 Strict', false,
+ array_merge($common, $non_xml),
+ array('Tidy_Strict', 'Tidy_Proprietary', 'Tidy_Name'),
+ array(),
+ '-//W3C//DTD HTML 4.01//EN',
+ 'http://www.w3.org/TR/html4/strict.dtd'
+ );
+
+ $this->doctypes->register(
+ 'XHTML 1.0 Transitional', true,
+ array_merge($common, $transitional, $xml, $non_xml),
+ array('Tidy_Transitional', 'Tidy_XHTML', 'Tidy_Proprietary', 'Tidy_Name'),
+ array(),
+ '-//W3C//DTD XHTML 1.0 Transitional//EN',
+ 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'
+ );
+
+ $this->doctypes->register(
+ 'XHTML 1.0 Strict', true,
+ array_merge($common, $xml, $non_xml),
+ array('Tidy_Strict', 'Tidy_XHTML', 'Tidy_Strict', 'Tidy_Proprietary', 'Tidy_Name'),
+ array(),
+ '-//W3C//DTD XHTML 1.0 Strict//EN',
+ 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'
+ );
+
+ $this->doctypes->register(
+ 'XHTML 1.1', true,
+ array_merge($common, $xml, array('Ruby')),
+ array('Tidy_Strict', 'Tidy_XHTML', 'Tidy_Proprietary', 'Tidy_Strict', 'Tidy_Name'), // Tidy_XHTML1_1
+ array(),
+ '-//W3C//DTD XHTML 1.1//EN',
+ 'http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd'
+ );
+
+ }
+
+ /**
+ * Registers a module to the recognized module list, useful for
+ * overloading pre-existing modules.
+ * @param $module Mixed: string module name, with or without
+ * HTMLPurifier_HTMLModule prefix, or instance of
+ * subclass of HTMLPurifier_HTMLModule.
+ * @param $overload Boolean whether or not to overload previous modules.
+ * If this is not set, and you do overload a module,
+ * HTML Purifier will complain with a warning.
+ * @note This function will not call autoload, you must instantiate
+ * (and thus invoke) autoload outside the method.
+ * @note If a string is passed as a module name, different variants
+ * will be tested in this order:
+ * - Check for HTMLPurifier_HTMLModule_$name
+ * - Check all prefixes with $name in order they were added
+ * - Check for literal object name
+ * - Throw fatal error
+ * If your object name collides with an internal class, specify
+ * your module manually. All modules must have been included
+ * externally: registerModule will not perform inclusions for you!
+ */
+ public function registerModule($module, $overload = false) {
+ if (is_string($module)) {
+ // attempt to load the module
+ $original_module = $module;
+ $ok = false;
+ foreach ($this->prefixes as $prefix) {
+ $module = $prefix . $original_module;
+ if (class_exists($module)) {
+ $ok = true;
+ break;
+ }
+ }
+ if (!$ok) {
+ $module = $original_module;
+ if (!class_exists($module)) {
+ trigger_error($original_module . ' module does not exist',
+ E_USER_ERROR);
+ return;
+ }
+ }
+ $module = new $module();
+ }
+ if (empty($module->name)) {
+ trigger_error('Module instance of ' . get_class($module) . ' must have name');
+ return;
+ }
+ if (!$overload && isset($this->registeredModules[$module->name])) {
+ trigger_error('Overloading ' . $module->name . ' without explicit overload parameter', E_USER_WARNING);
+ }
+ $this->registeredModules[$module->name] = $module;
+ }
+
+ /**
+ * Adds a module to the current doctype by first registering it,
+ * and then tacking it on to the active doctype
+ */
+ public function addModule($module) {
+ $this->registerModule($module);
+ if (is_object($module)) $module = $module->name;
+ $this->userModules[] = $module;
+ }
+
+ /**
+ * Adds a class prefix that registerModule() will use to resolve a
+ * string name to a concrete class
+ */
+ public function addPrefix($prefix) {
+ $this->prefixes[] = $prefix;
+ }
+
+ /**
+ * Performs processing on modules, after being called you may
+ * use getElement() and getElements()
+ * @param $config Instance of HTMLPurifier_Config
+ */
+ public function setup($config) {
+
+ $this->trusted = $config->get('HTML.Trusted');
+
+ // generate
+ $this->doctype = $this->doctypes->make($config);
+ $modules = $this->doctype->modules;
+
+ // take out the default modules that aren't allowed
+ $lookup = $config->get('HTML.AllowedModules');
+ $special_cases = $config->get('HTML.CoreModules');
+
+ if (is_array($lookup)) {
+ foreach ($modules as $k => $m) {
+ if (isset($special_cases[$m])) continue;
+ if (!isset($lookup[$m])) unset($modules[$k]);
+ }
+ }
+
+ // add proprietary module (this gets special treatment because
+ // it is completely removed from doctypes, etc.)
+ if ($config->get('HTML.Proprietary')) {
+ $modules[] = 'Proprietary';
+ }
+
+ // add SafeObject/Safeembed modules
+ if ($config->get('HTML.SafeObject')) {
+ $modules[] = 'SafeObject';
+ }
+ if ($config->get('HTML.SafeEmbed')) {
+ $modules[] = 'SafeEmbed';
+ }
+
+ // merge in custom modules
+ $modules = array_merge($modules, $this->userModules);
+
+ foreach ($modules as $module) {
+ $this->processModule($module);
+ $this->modules[$module]->setup($config);
+ }
+
+ foreach ($this->doctype->tidyModules as $module) {
+ $this->processModule($module);
+ $this->modules[$module]->setup($config);
+ }
+
+ // prepare any injectors
+ foreach ($this->modules as $module) {
+ $n = array();
+ foreach ($module->info_injector as $i => $injector) {
+ if (!is_object($injector)) {
+ $class = "HTMLPurifier_Injector_$injector";
+ $injector = new $class;
+ }
+ $n[$injector->name] = $injector;
+ }
+ $module->info_injector = $n;
+ }
+
+ // setup lookup table based on all valid modules
+ foreach ($this->modules as $module) {
+ foreach ($module->info as $name => $def) {
+ if (!isset($this->elementLookup[$name])) {
+ $this->elementLookup[$name] = array();
+ }
+ $this->elementLookup[$name][] = $module->name;
+ }
+ }
+
+ // note the different choice
+ $this->contentSets = new HTMLPurifier_ContentSets(
+ // content set assembly deals with all possible modules,
+ // not just ones deemed to be "safe"
+ $this->modules
+ );
+ $this->attrCollections = new HTMLPurifier_AttrCollections(
+ $this->attrTypes,
+ // there is no way to directly disable a global attribute,
+ // but using AllowedAttributes or simply not including
+ // the module in your custom doctype should be sufficient
+ $this->modules
+ );
+ }
+
+ /**
+ * Takes a module and adds it to the active module collection,
+ * registering it if necessary.
+ */
+ public function processModule($module) {
+ if (!isset($this->registeredModules[$module]) || is_object($module)) {
+ $this->registerModule($module);
+ }
+ $this->modules[$module] = $this->registeredModules[$module];
+ }
+
+ /**
+ * Retrieves merged element definitions.
+ * @return Array of HTMLPurifier_ElementDef
+ */
+ public function getElements() {
+
+ $elements = array();
+ foreach ($this->modules as $module) {
+ if (!$this->trusted && !$module->safe) continue;
+ foreach ($module->info as $name => $v) {
+ if (isset($elements[$name])) continue;
+ $elements[$name] = $this->getElement($name);
+ }
+ }
+
+ // remove dud elements, this happens when an element that
+ // appeared to be safe actually wasn't
+ foreach ($elements as $n => $v) {
+ if ($v === false) unset($elements[$n]);
+ }
+
+ return $elements;
+
+ }
+
+ /**
+ * Retrieves a single merged element definition
+ * @param $name Name of element
+ * @param $trusted Boolean trusted overriding parameter: set to true
+ * if you want the full version of an element
+ * @return Merged HTMLPurifier_ElementDef
+ * @note You may notice that modules are getting iterated over twice (once
+ * in getElements() and once here). This
+ * is because
+ */
+ public function getElement($name, $trusted = null) {
+
+ if (!isset($this->elementLookup[$name])) {
+ return false;
+ }
+
+ // setup global state variables
+ $def = false;
+ if ($trusted === null) $trusted = $this->trusted;
+
+ // iterate through each module that has registered itself to this
+ // element
+ foreach($this->elementLookup[$name] as $module_name) {
+
+ $module = $this->modules[$module_name];
+
+ // refuse to create/merge from a module that is deemed unsafe--
+ // pretend the module doesn't exist--when trusted mode is not on.
+ if (!$trusted && !$module->safe) {
+ continue;
+ }
+
+ // clone is used because, ideally speaking, the original
+ // definition should not be modified. Usually, this will
+ // make no difference, but for consistency's sake
+ $new_def = clone $module->info[$name];
+
+ if (!$def && $new_def->standalone) {
+ $def = $new_def;
+ } elseif ($def) {
+ // This will occur even if $new_def is standalone. In practice,
+ // this will usually result in a full replacement.
+ $def->mergeIn($new_def);
+ } else {
+ // :TODO:
+ // non-standalone definitions that don't have a standalone
+ // to merge into could be deferred to the end
+ continue;
+ }
+
+ // attribute value expansions
+ $this->attrCollections->performInclusions($def->attr);
+ $this->attrCollections->expandIdentifiers($def->attr, $this->attrTypes);
+
+ // descendants_are_inline, for ChildDef_Chameleon
+ if (is_string($def->content_model) &&
+ strpos($def->content_model, 'Inline') !== false) {
+ if ($name != 'del' && $name != 'ins') {
+ // this is for you, ins/del
+ $def->descendants_are_inline = true;
+ }
+ }
+
+ $this->contentSets->generateChildDef($def, $module);
+ }
+
+ // This can occur if there is a blank definition, but no base to
+ // mix it in with
+ if (!$def) return false;
+
+ // add information on required attributes
+ foreach ($def->attr as $attr_name => $attr_def) {
+ if ($attr_def->required) {
+ $def->required_attr[] = $attr_name;
+ }
+ }
+
+ return $def;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Component of HTMLPurifier_AttrContext that accumulates IDs to prevent dupes
+ * @note In Slashdot-speak, dupe means duplicate.
+ * @note The default constructor does not accept $config or $context objects:
+ * use must use the static build() factory method to perform initialization.
+ */
+class HTMLPurifier_IDAccumulator
+{
+
+ /**
+ * Lookup table of IDs we've accumulated.
+ * @public
+ */
+ public $ids = array();
+
+ /**
+ * Builds an IDAccumulator, also initializing the default blacklist
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ * @return Fully initialized HTMLPurifier_IDAccumulator
+ */
+ public static function build($config, $context) {
+ $id_accumulator = new HTMLPurifier_IDAccumulator();
+ $id_accumulator->load($config->get('Attr.IDBlacklist'));
+ return $id_accumulator;
+ }
+
+ /**
+ * Add an ID to the lookup table.
+ * @param $id ID to be added.
+ * @return Bool status, true if success, false if there's a dupe
+ */
+ public function add($id) {
+ if (isset($this->ids[$id])) return false;
+ return $this->ids[$id] = true;
+ }
+
+ /**
+ * Load a list of IDs into the lookup table
+ * @param $array_of_ids Array of IDs to load
+ * @note This function doesn't care about duplicates
+ */
+ public function load($array_of_ids) {
+ foreach ($array_of_ids as $id) {
+ $this->ids[$id] = true;
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Injects tokens into the document while parsing for well-formedness.
+ * This enables "formatter-like" functionality such as auto-paragraphing,
+ * smiley-ification and linkification to take place.
+ *
+ * A note on how handlers create changes; this is done by assigning a new
+ * value to the $token reference. These values can take a variety of forms and
+ * are best described HTMLPurifier_Strategy_MakeWellFormed->processToken()
+ * documentation.
+ *
+ * @todo Allow injectors to request a re-run on their output. This
+ * would help if an operation is recursive.
+ */
+abstract class HTMLPurifier_Injector
+{
+
+ /**
+ * Advisory name of injector, this is for friendly error messages
+ */
+ public $name;
+
+ /**
+ * Instance of HTMLPurifier_HTMLDefinition
+ */
+ protected $htmlDefinition;
+
+ /**
+ * Reference to CurrentNesting variable in Context. This is an array
+ * list of tokens that we are currently "inside"
+ */
+ protected $currentNesting;
+
+ /**
+ * Reference to InputTokens variable in Context. This is an array
+ * list of the input tokens that are being processed.
+ */
+ protected $inputTokens;
+
+ /**
+ * Reference to InputIndex variable in Context. This is an integer
+ * array index for $this->inputTokens that indicates what token
+ * is currently being processed.
+ */
+ protected $inputIndex;
+
+ /**
+ * Array of elements and attributes this injector creates and therefore
+ * need to be allowed by the definition. Takes form of
+ * array('element' => array('attr', 'attr2'), 'element2')
+ */
+ public $needed = array();
+
+ /**
+ * Index of inputTokens to rewind to.
+ */
+ protected $rewind = false;
+
+ /**
+ * Rewind to a spot to re-perform processing. This is useful if you
+ * deleted a node, and now need to see if this change affected any
+ * earlier nodes. Rewinding does not affect other injectors, and can
+ * result in infinite loops if not used carefully.
+ * @warning HTML Purifier will prevent you from fast-forwarding with this
+ * function.
+ */
+ public function rewind($index) {
+ $this->rewind = $index;
+ }
+
+ /**
+ * Retrieves rewind, and then unsets it.
+ */
+ public function getRewind() {
+ $r = $this->rewind;
+ $this->rewind = false;
+ return $r;
+ }
+
+ /**
+ * Prepares the injector by giving it the config and context objects:
+ * this allows references to important variables to be made within
+ * the injector. This function also checks if the HTML environment
+ * will work with the Injector (see checkNeeded()).
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ * @return Boolean false if success, string of missing needed element/attribute if failure
+ */
+ public function prepare($config, $context) {
+ $this->htmlDefinition = $config->getHTMLDefinition();
+ // Even though this might fail, some unit tests ignore this and
+ // still test checkNeeded, so be careful. Maybe get rid of that
+ // dependency.
+ $result = $this->checkNeeded($config);
+ if ($result !== false) return $result;
+ $this->currentNesting =& $context->get('CurrentNesting');
+ $this->inputTokens =& $context->get('InputTokens');
+ $this->inputIndex =& $context->get('InputIndex');
+ return false;
+ }
+
+ /**
+ * This function checks if the HTML environment
+ * will work with the Injector: if p tags are not allowed, the
+ * Auto-Paragraphing injector should not be enabled.
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ * @return Boolean false if success, string of missing needed element/attribute if failure
+ */
+ public function checkNeeded($config) {
+ $def = $config->getHTMLDefinition();
+ foreach ($this->needed as $element => $attributes) {
+ if (is_int($element)) $element = $attributes;
+ if (!isset($def->info[$element])) return $element;
+ if (!is_array($attributes)) continue;
+ foreach ($attributes as $name) {
+ if (!isset($def->info[$element]->attr[$name])) return "$element.$name";
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Tests if the context node allows a certain element
+ * @param $name Name of element to test for
+ * @return True if element is allowed, false if it is not
+ */
+ public function allowsElement($name) {
+ if (!empty($this->currentNesting)) {
+ $parent_token = array_pop($this->currentNesting);
+ $this->currentNesting[] = $parent_token;
+ $parent = $this->htmlDefinition->info[$parent_token->name];
+ } else {
+ $parent = $this->htmlDefinition->info_parent_def;
+ }
+ if (!isset($parent->child->elements[$name]) || isset($parent->excludes[$name])) {
+ return false;
+ }
+ // check for exclusion
+ for ($i = count($this->currentNesting) - 2; $i >= 0; $i--) {
+ $node = $this->currentNesting[$i];
+ $def = $this->htmlDefinition->info[$node->name];
+ if (isset($def->excludes[$name])) return false;
+ }
+ return true;
+ }
+
+ /**
+ * Iterator function, which starts with the next token and continues until
+ * you reach the end of the input tokens.
+ * @warning Please prevent previous references from interfering with this
+ * functions by setting $i = null beforehand!
+ * @param &$i Current integer index variable for inputTokens
+ * @param &$current Current token variable. Do NOT use $token, as that variable is also a reference
+ */
+ protected function forward(&$i, &$current) {
+ if ($i === null) $i = $this->inputIndex + 1;
+ else $i++;
+ if (!isset($this->inputTokens[$i])) return false;
+ $current = $this->inputTokens[$i];
+ return true;
+ }
+
+ /**
+ * Similar to _forward, but accepts a third parameter $nesting (which
+ * should be initialized at 0) and stops when we hit the end tag
+ * for the node $this->inputIndex starts in.
+ */
+ protected function forwardUntilEndToken(&$i, &$current, &$nesting) {
+ $result = $this->forward($i, $current);
+ if (!$result) return false;
+ if ($nesting === null) $nesting = 0;
+ if ($current instanceof HTMLPurifier_Token_Start) $nesting++;
+ elseif ($current instanceof HTMLPurifier_Token_End) {
+ if ($nesting <= 0) return false;
+ $nesting--;
+ }
+ return true;
+ }
+
+ /**
+ * Iterator function, starts with the previous token and continues until
+ * you reach the beginning of input tokens.
+ * @warning Please prevent previous references from interfering with this
+ * functions by setting $i = null beforehand!
+ * @param &$i Current integer index variable for inputTokens
+ * @param &$current Current token variable. Do NOT use $token, as that variable is also a reference
+ */
+ protected function backward(&$i, &$current) {
+ if ($i === null) $i = $this->inputIndex - 1;
+ else $i--;
+ if ($i < 0) return false;
+ $current = $this->inputTokens[$i];
+ return true;
+ }
+
+ /**
+ * Initializes the iterator at the current position. Use in a do {} while;
+ * loop to force the _forward and _backward functions to start at the
+ * current location.
+ * @warning Please prevent previous references from interfering with this
+ * functions by setting $i = null beforehand!
+ * @param &$i Current integer index variable for inputTokens
+ * @param &$current Current token variable. Do NOT use $token, as that variable is also a reference
+ */
+ protected function current(&$i, &$current) {
+ if ($i === null) $i = $this->inputIndex;
+ $current = $this->inputTokens[$i];
+ }
+
+ /**
+ * Handler that is called when a text token is processed
+ */
+ public function handleText(&$token) {}
+
+ /**
+ * Handler that is called when a start or empty token is processed
+ */
+ public function handleElement(&$token) {}
+
+ /**
+ * Handler that is called when an end token is processed
+ */
+ public function handleEnd(&$token) {
+ $this->notifyEnd($token);
+ }
+
+ /**
+ * Notifier that is called when an end token is processed
+ * @note This differs from handlers in that the token is read-only
+ * @deprecated
+ */
+ public function notifyEnd($token) {}
+
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Injector that auto paragraphs text in the root node based on
+ * double-spacing.
+ * @todo Ensure all states are unit tested, including variations as well.
+ * @todo Make a graph of the flow control for this Injector.
+ */
+class HTMLPurifier_Injector_AutoParagraph extends HTMLPurifier_Injector
+{
+
+ public $name = 'AutoParagraph';
+ public $needed = array('p');
+
+ private function _pStart() {
+ $par = new HTMLPurifier_Token_Start('p');
+ $par->armor['MakeWellFormed_TagClosedError'] = true;
+ return $par;
+ }
+
+ public function handleText(&$token) {
+ $text = $token->data;
+ // Does the current parent allow <p> tags?
+ if ($this->allowsElement('p')) {
+ if (empty($this->currentNesting) || strpos($text, "\n\n") !== false) {
+ // Note that we have differing behavior when dealing with text
+ // in the anonymous root node, or a node inside the document.
+ // If the text as a double-newline, the treatment is the same;
+ // if it doesn't, see the next if-block if you're in the document.
+
+ $i = $nesting = null;
+ if (!$this->forwardUntilEndToken($i, $current, $nesting) && $token->is_whitespace) {
+ // State 1.1: ... ^ (whitespace, then document end)
+ // ----
+ // This is a degenerate case
+ } else {
+ // State 1.2: PAR1
+ // ----
+
+ // State 1.3: PAR1\n\nPAR2
+ // ------------
+
+ // State 1.4: <div>PAR1\n\nPAR2 (see State 2)
+ // ------------
+ $token = array($this->_pStart());
+ $this->_splitText($text, $token);
+ }
+ } else {
+ // State 2: <div>PAR1... (similar to 1.4)
+ // ----
+
+ // We're in an element that allows paragraph tags, but we're not
+ // sure if we're going to need them.
+ if ($this->_pLookAhead()) {
+ // State 2.1: <div>PAR1<b>PAR1\n\nPAR2
+ // ----
+ // Note: This will always be the first child, since any
+ // previous inline element would have triggered this very
+ // same routine, and found the double newline. One possible
+ // exception would be a comment.
+ $token = array($this->_pStart(), $token);
+ } else {
+ // State 2.2.1: <div>PAR1<div>
+ // ----
+
+ // State 2.2.2: <div>PAR1<b>PAR1</b></div>
+ // ----
+ }
+ }
+ // Is the current parent a <p> tag?
+ } elseif (
+ !empty($this->currentNesting) &&
+ $this->currentNesting[count($this->currentNesting)-1]->name == 'p'
+ ) {
+ // State 3.1: ...<p>PAR1
+ // ----
+
+ // State 3.2: ...<p>PAR1\n\nPAR2
+ // ------------
+ $token = array();
+ $this->_splitText($text, $token);
+ // Abort!
+ } else {
+ // State 4.1: ...<b>PAR1
+ // ----
+
+ // State 4.2: ...<b>PAR1\n\nPAR2
+ // ------------
+ }
+ }
+
+ public function handleElement(&$token) {
+ // We don't have to check if we're already in a <p> tag for block
+ // tokens, because the tag would have been autoclosed by MakeWellFormed.
+ if ($this->allowsElement('p')) {
+ if (!empty($this->currentNesting)) {
+ if ($this->_isInline($token)) {
+ // State 1: <div>...<b>
+ // ---
+
+ // Check if this token is adjacent to the parent token
+ // (seek backwards until token isn't whitespace)
+ $i = null;
+ $this->backward($i, $prev);
+
+ if (!$prev instanceof HTMLPurifier_Token_Start) {
+ // Token wasn't adjacent
+
+ if (
+ $prev instanceof HTMLPurifier_Token_Text &&
+ substr($prev->data, -2) === "\n\n"
+ ) {
+ // State 1.1.4: <div><p>PAR1</p>\n\n<b>
+ // ---
+
+ // Quite frankly, this should be handled by splitText
+ $token = array($this->_pStart(), $token);
+ } else {
+ // State 1.1.1: <div><p>PAR1</p><b>
+ // ---
+
+ // State 1.1.2: <div><br /><b>
+ // ---
+
+ // State 1.1.3: <div>PAR<b>
+ // ---
+ }
+
+ } else {
+ // State 1.2.1: <div><b>
+ // ---
+
+ // Lookahead to see if <p> is needed.
+ if ($this->_pLookAhead()) {
+ // State 1.3.1: <div><b>PAR1\n\nPAR2
+ // ---
+ $token = array($this->_pStart(), $token);
+ } else {
+ // State 1.3.2: <div><b>PAR1</b></div>
+ // ---
+
+ // State 1.3.3: <div><b>PAR1</b><div></div>\n\n</div>
+ // ---
+ }
+ }
+ } else {
+ // State 2.3: ...<div>
+ // -----
+ }
+ } else {
+ if ($this->_isInline($token)) {
+ // State 3.1: <b>
+ // ---
+ // This is where the {p} tag is inserted, not reflected in
+ // inputTokens yet, however.
+ $token = array($this->_pStart(), $token);
+ } else {
+ // State 3.2: <div>
+ // -----
+ }
+
+ $i = null;
+ if ($this->backward($i, $prev)) {
+ if (
+ !$prev instanceof HTMLPurifier_Token_Text
+ ) {
+ // State 3.1.1: ...</p>{p}<b>
+ // ---
+
+ // State 3.2.1: ...</p><div>
+ // -----
+
+ if (!is_array($token)) $token = array($token);
+ array_unshift($token, new HTMLPurifier_Token_Text("\n\n"));
+ } else {
+ // State 3.1.2: ...</p>\n\n{p}<b>
+ // ---
+
+ // State 3.2.2: ...</p>\n\n<div>
+ // -----
+
+ // Note: PAR<ELEM> cannot occur because PAR would have been
+ // wrapped in <p> tags.
+ }
+ }
+ }
+ } else {
+ // State 2.2: <ul><li>
+ // ----
+
+ // State 2.4: <p><b>
+ // ---
+ }
+ }
+
+ /**
+ * Splits up a text in paragraph tokens and appends them
+ * to the result stream that will replace the original
+ * @param $data String text data that will be processed
+ * into paragraphs
+ * @param $result Reference to array of tokens that the
+ * tags will be appended onto
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ */
+ private function _splitText($data, &$result) {
+ $raw_paragraphs = explode("\n\n", $data);
+ $paragraphs = array(); // without empty paragraphs
+ $needs_start = false;
+ $needs_end = false;
+
+ $c = count($raw_paragraphs);
+ if ($c == 1) {
+ // There were no double-newlines, abort quickly. In theory this
+ // should never happen.
+ $result[] = new HTMLPurifier_Token_Text($data);
+ return;
+ }
+ for ($i = 0; $i < $c; $i++) {
+ $par = $raw_paragraphs[$i];
+ if (trim($par) !== '') {
+ $paragraphs[] = $par;
+ } else {
+ if ($i == 0) {
+ // Double newline at the front
+ if (empty($result)) {
+ // The empty result indicates that the AutoParagraph
+ // injector did not add any start paragraph tokens.
+ // This means that we have been in a paragraph for
+ // a while, and the newline means we should start a new one.
+ $result[] = new HTMLPurifier_Token_End('p');
+ $result[] = new HTMLPurifier_Token_Text("\n\n");
+ // However, the start token should only be added if
+ // there is more processing to be done (i.e. there are
+ // real paragraphs in here). If there are none, the
+ // next start paragraph tag will be handled by the
+ // next call to the injector
+ $needs_start = true;
+ } else {
+ // We just started a new paragraph!
+ // Reinstate a double-newline for presentation's sake, since
+ // it was in the source code.
+ array_unshift($result, new HTMLPurifier_Token_Text("\n\n"));
+ }
+ } elseif ($i + 1 == $c) {
+ // Double newline at the end
+ // There should be a trailing </p> when we're finally done.
+ $needs_end = true;
+ }
+ }
+ }
+
+ // Check if this was just a giant blob of whitespace. Move this earlier,
+ // perhaps?
+ if (empty($paragraphs)) {
+ return;
+ }
+
+ // Add the start tag indicated by \n\n at the beginning of $data
+ if ($needs_start) {
+ $result[] = $this->_pStart();
+ }
+
+ // Append the paragraphs onto the result
+ foreach ($paragraphs as $par) {
+ $result[] = new HTMLPurifier_Token_Text($par);
+ $result[] = new HTMLPurifier_Token_End('p');
+ $result[] = new HTMLPurifier_Token_Text("\n\n");
+ $result[] = $this->_pStart();
+ }
+
+ // Remove trailing start token; Injector will handle this later if
+ // it was indeed needed. This prevents from needing to do a lookahead,
+ // at the cost of a lookbehind later.
+ array_pop($result);
+
+ // If there is no need for an end tag, remove all of it and let
+ // MakeWellFormed close it later.
+ if (!$needs_end) {
+ array_pop($result); // removes \n\n
+ array_pop($result); // removes </p>
+ }
+
+ }
+
+ /**
+ * Returns true if passed token is inline (and, ergo, allowed in
+ * paragraph tags)
+ */
+ private function _isInline($token) {
+ return isset($this->htmlDefinition->info['p']->child->elements[$token->name]);
+ }
+
+ /**
+ * Looks ahead in the token list and determines whether or not we need
+ * to insert a <p> tag.
+ */
+ private function _pLookAhead() {
+ $this->current($i, $current);
+ if ($current instanceof HTMLPurifier_Token_Start) $nesting = 1;
+ else $nesting = 0;
+ $ok = false;
+ while ($this->forwardUntilEndToken($i, $current, $nesting)) {
+ $result = $this->_checkNeedsP($current);
+ if ($result !== null) {
+ $ok = $result;
+ break;
+ }
+ }
+ return $ok;
+ }
+
+ /**
+ * Determines if a particular token requires an earlier inline token
+ * to get a paragraph. This should be used with _forwardUntilEndToken
+ */
+ private function _checkNeedsP($current) {
+ if ($current instanceof HTMLPurifier_Token_Start){
+ if (!$this->_isInline($current)) {
+ // <div>PAR1<div>
+ // ----
+ // Terminate early, since we hit a block element
+ return false;
+ }
+ } elseif ($current instanceof HTMLPurifier_Token_Text) {
+ if (strpos($current->data, "\n\n") !== false) {
+ // <div>PAR1<b>PAR1\n\nPAR2
+ // ----
+ return true;
+ } else {
+ // <div>PAR1<b>PAR1...
+ // ----
+ }
+ }
+ return null;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Injector that displays the URL of an anchor instead of linking to it, in addition to showing the text of the link.
+ */
+class HTMLPurifier_Injector_DisplayLinkURI extends HTMLPurifier_Injector
+{
+
+ public $name = 'DisplayLinkURI';
+ public $needed = array('a');
+
+ public function handleElement(&$token) {
+ }
+
+ public function handleEnd(&$token) {
+ if (isset($token->start->attr['href'])){
+ $url = $token->start->attr['href'];
+ unset($token->start->attr['href']);
+ $token = array($token, new HTMLPurifier_Token_Text(" ($url)"));
+ } else {
+ // nothing to display
+ }
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Injector that converts http, https and ftp text URLs to actual links.
+ */
+class HTMLPurifier_Injector_Linkify extends HTMLPurifier_Injector
+{
+
+ public $name = 'Linkify';
+ public $needed = array('a' => array('href'));
+
+ public function handleText(&$token) {
+ if (!$this->allowsElement('a')) return;
+
+ if (strpos($token->data, '://') === false) {
+ // our really quick heuristic failed, abort
+ // this may not work so well if we want to match things like
+ // "google.com", but then again, most people don't
+ return;
+ }
+
+ // there is/are URL(s). Let's split the string:
+ // Note: this regex is extremely permissive
+ $bits = preg_split('#((?:https?|ftp)://[^\s\'"<>()]+)#S', $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
+
+ $token = array();
+
+ // $i = index
+ // $c = count
+ // $l = is link
+ for ($i = 0, $c = count($bits), $l = false; $i < $c; $i++, $l = !$l) {
+ if (!$l) {
+ if ($bits[$i] === '') continue;
+ $token[] = new HTMLPurifier_Token_Text($bits[$i]);
+ } else {
+ $token[] = new HTMLPurifier_Token_Start('a', array('href' => $bits[$i]));
+ $token[] = new HTMLPurifier_Token_Text($bits[$i]);
+ $token[] = new HTMLPurifier_Token_End('a');
+ }
+ }
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Injector that converts configuration directive syntax %Namespace.Directive
+ * to links
+ */
+class HTMLPurifier_Injector_PurifierLinkify extends HTMLPurifier_Injector
+{
+
+ public $name = 'PurifierLinkify';
+ public $docURL;
+ public $needed = array('a' => array('href'));
+
+ public function prepare($config, $context) {
+ $this->docURL = $config->get('AutoFormat.PurifierLinkify.DocURL');
+ return parent::prepare($config, $context);
+ }
+
+ public function handleText(&$token) {
+ if (!$this->allowsElement('a')) return;
+ if (strpos($token->data, '%') === false) return;
+
+ $bits = preg_split('#%([a-z0-9]+\.[a-z0-9]+)#Si', $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
+ $token = array();
+
+ // $i = index
+ // $c = count
+ // $l = is link
+ for ($i = 0, $c = count($bits), $l = false; $i < $c; $i++, $l = !$l) {
+ if (!$l) {
+ if ($bits[$i] === '') continue;
+ $token[] = new HTMLPurifier_Token_Text($bits[$i]);
+ } else {
+ $token[] = new HTMLPurifier_Token_Start('a',
+ array('href' => str_replace('%s', $bits[$i], $this->docURL)));
+ $token[] = new HTMLPurifier_Token_Text('%' . $bits[$i]);
+ $token[] = new HTMLPurifier_Token_End('a');
+ }
+ }
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_Injector_RemoveEmpty extends HTMLPurifier_Injector
+{
+
+ private $context, $config, $attrValidator, $removeNbsp, $removeNbspExceptions;
+
+ public function prepare($config, $context) {
+ parent::prepare($config, $context);
+ $this->config = $config;
+ $this->context = $context;
+ $this->removeNbsp = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp');
+ $this->removeNbspExceptions = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions');
+ $this->attrValidator = new HTMLPurifier_AttrValidator();
+ }
+
+ public function handleElement(&$token) {
+ if (!$token instanceof HTMLPurifier_Token_Start) return;
+ $next = false;
+ for ($i = $this->inputIndex + 1, $c = count($this->inputTokens); $i < $c; $i++) {
+ $next = $this->inputTokens[$i];
+ if ($next instanceof HTMLPurifier_Token_Text) {
+ if ($next->is_whitespace) continue;
+ if ($this->removeNbsp && !isset($this->removeNbspExceptions[$token->name])) {
+ $plain = str_replace("\xC2\xA0", "", $next->data);
+ $isWsOrNbsp = $plain === '' || ctype_space($plain);
+ if ($isWsOrNbsp) continue;
+ }
+ }
+ break;
+ }
+ if (!$next || ($next instanceof HTMLPurifier_Token_End && $next->name == $token->name)) {
+ if ($token->name == 'colgroup') return;
+ $this->attrValidator->validateToken($token, $this->config, $this->context);
+ $token->armor['ValidateAttributes'] = true;
+ if (isset($token->attr['id']) || isset($token->attr['name'])) return;
+ $token = $i - $this->inputIndex + 1;
+ for ($b = $this->inputIndex - 1; $b > 0; $b--) {
+ $prev = $this->inputTokens[$b];
+ if ($prev instanceof HTMLPurifier_Token_Text && $prev->is_whitespace) continue;
+ break;
+ }
+ // This is safe because we removed the token that triggered this.
+ $this->rewind($b - 1);
+ return;
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Adds important param elements to inside of object in order to make
+ * things safe.
+ */
+class HTMLPurifier_Injector_SafeObject extends HTMLPurifier_Injector
+{
+ public $name = 'SafeObject';
+ public $needed = array('object', 'param');
+
+ protected $objectStack = array();
+ protected $paramStack = array();
+
+ // Keep this synchronized with AttrTransform/SafeParam.php
+ protected $addParam = array(
+ 'allowScriptAccess' => 'never',
+ 'allowNetworking' => 'internal',
+ );
+ protected $allowedParam = array(
+ 'wmode' => true,
+ 'movie' => true,
+ );
+
+ public function prepare($config, $context) {
+ parent::prepare($config, $context);
+ }
+
+ public function handleElement(&$token) {
+ if ($token->name == 'object') {
+ $this->objectStack[] = $token;
+ $this->paramStack[] = array();
+ $new = array($token);
+ foreach ($this->addParam as $name => $value) {
+ $new[] = new HTMLPurifier_Token_Empty('param', array('name' => $name, 'value' => $value));
+ }
+ $token = $new;
+ } elseif ($token->name == 'param') {
+ $nest = count($this->currentNesting) - 1;
+ if ($nest >= 0 && $this->currentNesting[$nest]->name === 'object') {
+ $i = count($this->objectStack) - 1;
+ if (!isset($token->attr['name'])) {
+ $token = false;
+ return;
+ }
+ $n = $token->attr['name'];
+ // We need this fix because YouTube doesn't supply a data
+ // attribute, which we need if a type is specified. This is
+ // *very* Flash specific.
+ if (!isset($this->objectStack[$i]->attr['data']) && $token->attr['name'] == 'movie') {
+ $this->objectStack[$i]->attr['data'] = $token->attr['value'];
+ }
+ // Check if the parameter is the correct value but has not
+ // already been added
+ if (
+ !isset($this->paramStack[$i][$n]) &&
+ isset($this->addParam[$n]) &&
+ $token->attr['name'] === $this->addParam[$n]
+ ) {
+ // keep token, and add to param stack
+ $this->paramStack[$i][$n] = true;
+ } elseif (isset($this->allowedParam[$n])) {
+ // keep token, don't do anything to it
+ // (could possibly check for duplicates here)
+ } else {
+ $token = false;
+ }
+ } else {
+ // not directly inside an object, DENY!
+ $token = false;
+ }
+ }
+ }
+
+ public function handleEnd(&$token) {
+ // This is the WRONG way of handling the object and param stacks;
+ // we should be inserting them directly on the relevant object tokens
+ // so that the global stack handling handles it.
+ if ($token->name == 'object') {
+ array_pop($this->objectStack);
+ array_pop($this->paramStack);
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Represents a language and defines localizable string formatting and
+ * other functions, as well as the localized messages for HTML Purifier.
+ */
+class HTMLPurifier_Language
+{
+
+ /**
+ * ISO 639 language code of language. Prefers shortest possible version
+ */
+ public $code = 'en';
+
+ /**
+ * Fallback language code
+ */
+ public $fallback = false;
+
+ /**
+ * Array of localizable messages
+ */
+ public $messages = array();
+
+ /**
+ * Array of localizable error codes
+ */
+ public $errorNames = array();
+
+ /**
+ * True if no message file was found for this language, so English
+ * is being used instead. Check this if you'd like to notify the
+ * user that they've used a non-supported language.
+ */
+ public $error = false;
+
+ /**
+ * Has the language object been loaded yet?
+ * @todo Make it private, fix usage in HTMLPurifier_LanguageTest
+ */
+ public $_loaded = false;
+
+ /**
+ * Instances of HTMLPurifier_Config and HTMLPurifier_Context
+ */
+ protected $config, $context;
+
+ public function __construct($config, $context) {
+ $this->config = $config;
+ $this->context = $context;
+ }
+
+ /**
+ * Loads language object with necessary info from factory cache
+ * @note This is a lazy loader
+ */
+ public function load() {
+ if ($this->_loaded) return;
+ $factory = HTMLPurifier_LanguageFactory::instance();
+ $factory->loadLanguage($this->code);
+ foreach ($factory->keys as $key) {
+ $this->$key = $factory->cache[$this->code][$key];
+ }
+ $this->_loaded = true;
+ }
+
+ /**
+ * Retrieves a localised message.
+ * @param $key string identifier of message
+ * @return string localised message
+ */
+ public function getMessage($key) {
+ if (!$this->_loaded) $this->load();
+ if (!isset($this->messages[$key])) return "[$key]";
+ return $this->messages[$key];
+ }
+
+ /**
+ * Retrieves a localised error name.
+ * @param $int integer error number, corresponding to PHP's error
+ * reporting
+ * @return string localised message
+ */
+ public function getErrorName($int) {
+ if (!$this->_loaded) $this->load();
+ if (!isset($this->errorNames[$int])) return "[Error: $int]";
+ return $this->errorNames[$int];
+ }
+
+ /**
+ * Converts an array list into a string readable representation
+ */
+ public function listify($array) {
+ $sep = $this->getMessage('Item separator');
+ $sep_last = $this->getMessage('Item separator last');
+ $ret = '';
+ for ($i = 0, $c = count($array); $i < $c; $i++) {
+ if ($i == 0) {
+ } elseif ($i + 1 < $c) {
+ $ret .= $sep;
+ } else {
+ $ret .= $sep_last;
+ }
+ $ret .= $array[$i];
+ }
+ return $ret;
+ }
+
+ /**
+ * Formats a localised message with passed parameters
+ * @param $key string identifier of message
+ * @param $args Parameters to substitute in
+ * @return string localised message
+ * @todo Implement conditionals? Right now, some messages make
+ * reference to line numbers, but those aren't always available
+ */
+ public function formatMessage($key, $args = array()) {
+ if (!$this->_loaded) $this->load();
+ if (!isset($this->messages[$key])) return "[$key]";
+ $raw = $this->messages[$key];
+ $subst = array();
+ $generator = false;
+ foreach ($args as $i => $value) {
+ if (is_object($value)) {
+ if ($value instanceof HTMLPurifier_Token) {
+ // factor this out some time
+ if (!$generator) $generator = $this->context->get('Generator');
+ if (isset($value->name)) $subst['$'.$i.'.Name'] = $value->name;
+ if (isset($value->data)) $subst['$'.$i.'.Data'] = $value->data;
+ $subst['$'.$i.'.Compact'] =
+ $subst['$'.$i.'.Serialized'] = $generator->generateFromToken($value);
+ // a more complex algorithm for compact representation
+ // could be introduced for all types of tokens. This
+ // may need to be factored out into a dedicated class
+ if (!empty($value->attr)) {
+ $stripped_token = clone $value;
+ $stripped_token->attr = array();
+ $subst['$'.$i.'.Compact'] = $generator->generateFromToken($stripped_token);
+ }
+ $subst['$'.$i.'.Line'] = $value->line ? $value->line : 'unknown';
+ }
+ continue;
+ } elseif (is_array($value)) {
+ $keys = array_keys($value);
+ if (array_keys($keys) === $keys) {
+ // list
+ $subst['$'.$i] = $this->listify($value);
+ } else {
+ // associative array
+ // no $i implementation yet, sorry
+ $subst['$'.$i.'.Keys'] = $this->listify($keys);
+ $subst['$'.$i.'.Values'] = $this->listify(array_values($value));
+ }
+ continue;
+ }
+ $subst['$' . $i] = $value;
+ }
+ return strtr($raw, $subst);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// private class for unit testing
+
+class HTMLPurifier_Language_en_x_test extends HTMLPurifier_Language
+{
+
+
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// private language message file for unit testing purposes
+
+$fallback = 'en';
+
+$messages = array(
+ 'HTMLPurifier' => 'HTML Purifier X'
+);
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// private language message file for unit testing purposes
+// this language file has no class associated with it
+
+$fallback = 'en';
+
+$messages = array(
+ 'HTMLPurifier' => 'HTML Purifier XNone'
+);
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+$fallback = false;
+
+$messages = array(
+
+'HTMLPurifier' => 'HTML Purifier',
+
+// for unit testing purposes
+'LanguageFactoryTest: Pizza' => 'Pizza',
+'LanguageTest: List' => '$1',
+'LanguageTest: Hash' => '$1.Keys; $1.Values',
+
+'Item separator' => ', ',
+'Item separator last' => ' and ', // non-Harvard style
+
+'ErrorCollector: No errors' => 'No errors detected. However, because error reporting is still incomplete, there may have been errors that the error collector was not notified of; please inspect the output HTML carefully.',
+'ErrorCollector: At line' => ' at line $line',
+'ErrorCollector: Incidental errors' => 'Incidental errors',
+
+'Lexer: Unclosed comment' => 'Unclosed comment',
+'Lexer: Unescaped lt' => 'Unescaped less-than sign (<) should be <',
+'Lexer: Missing gt' => 'Missing greater-than sign (>), previous less-than sign (<) should be escaped',
+'Lexer: Missing attribute key' => 'Attribute declaration has no key',
+'Lexer: Missing end quote' => 'Attribute declaration has no end quote',
+
+'Strategy_RemoveForeignElements: Tag transform' => '<$1> element transformed into $CurrentToken.Serialized',
+'Strategy_RemoveForeignElements: Missing required attribute' => '$CurrentToken.Compact element missing required attribute $1',
+'Strategy_RemoveForeignElements: Foreign element to text' => 'Unrecognized $CurrentToken.Serialized tag converted to text',
+'Strategy_RemoveForeignElements: Foreign element removed' => 'Unrecognized $CurrentToken.Serialized tag removed',
+'Strategy_RemoveForeignElements: Comment removed' => 'Comment containing "$CurrentToken.Data" removed',
+'Strategy_RemoveForeignElements: Foreign meta element removed' => 'Unrecognized $CurrentToken.Serialized meta tag and all descendants removed',
+'Strategy_RemoveForeignElements: Token removed to end' => 'Tags and text starting from $1 element where removed to end',
+'Strategy_RemoveForeignElements: Trailing hyphen in comment removed' => 'Trailing hyphen(s) in comment removed',
+'Strategy_RemoveForeignElements: Hyphens in comment collapsed' => 'Double hyphens in comments are not allowed, and were collapsed into single hyphens',
+
+'Strategy_MakeWellFormed: Unnecessary end tag removed' => 'Unnecessary $CurrentToken.Serialized tag removed',
+'Strategy_MakeWellFormed: Unnecessary end tag to text' => 'Unnecessary $CurrentToken.Serialized tag converted to text',
+'Strategy_MakeWellFormed: Tag auto closed' => '$1.Compact started on line $1.Line auto-closed by $CurrentToken.Compact',
+'Strategy_MakeWellFormed: Tag carryover' => '$1.Compact started on line $1.Line auto-continued into $CurrentToken.Compact',
+'Strategy_MakeWellFormed: Stray end tag removed' => 'Stray $CurrentToken.Serialized tag removed',
+'Strategy_MakeWellFormed: Stray end tag to text' => 'Stray $CurrentToken.Serialized tag converted to text',
+'Strategy_MakeWellFormed: Tag closed by element end' => '$1.Compact tag started on line $1.Line closed by end of $CurrentToken.Serialized',
+'Strategy_MakeWellFormed: Tag closed by document end' => '$1.Compact tag started on line $1.Line closed by end of document',
+
+'Strategy_FixNesting: Node removed' => '$CurrentToken.Compact node removed',
+'Strategy_FixNesting: Node excluded' => '$CurrentToken.Compact node removed due to descendant exclusion by ancestor element',
+'Strategy_FixNesting: Node reorganized' => 'Contents of $CurrentToken.Compact node reorganized to enforce its content model',
+'Strategy_FixNesting: Node contents removed' => 'Contents of $CurrentToken.Compact node removed',
+
+'AttrValidator: Attributes transformed' => 'Attributes on $CurrentToken.Compact transformed from $1.Keys to $2.Keys',
+'AttrValidator: Attribute removed' => '$CurrentAttr.Name attribute on $CurrentToken.Compact removed',
+
+);
+
+$errorNames = array(
+ E_ERROR => 'Error',
+ E_WARNING => 'Warning',
+ E_NOTICE => 'Notice'
+);
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Class responsible for generating HTMLPurifier_Language objects, managing
+ * caching and fallbacks.
+ * @note Thanks to MediaWiki for the general logic, although this version
+ * has been entirely rewritten
+ * @todo Serialized cache for languages
+ */
+class HTMLPurifier_LanguageFactory
+{
+
+ /**
+ * Cache of language code information used to load HTMLPurifier_Language objects
+ * Structure is: $factory->cache[$language_code][$key] = $value
+ * @value array map
+ */
+ public $cache;
+
+ /**
+ * Valid keys in the HTMLPurifier_Language object. Designates which
+ * variables to slurp out of a message file.
+ * @value array list
+ */
+ public $keys = array('fallback', 'messages', 'errorNames');
+
+ /**
+ * Instance of HTMLPurifier_AttrDef_Lang to validate language codes
+ * @value object HTMLPurifier_AttrDef_Lang
+ */
+ protected $validator;
+
+ /**
+ * Cached copy of dirname(__FILE__), directory of current file without
+ * trailing slash
+ * @value string filename
+ */
+ protected $dir;
+
+ /**
+ * Keys whose contents are a hash map and can be merged
+ * @value array lookup
+ */
+ protected $mergeable_keys_map = array('messages' => true, 'errorNames' => true);
+
+ /**
+ * Keys whose contents are a list and can be merged
+ * @value array lookup
+ */
+ protected $mergeable_keys_list = array();
+
+ /**
+ * Retrieve sole instance of the factory.
+ * @param $prototype Optional prototype to overload sole instance with,
+ * or bool true to reset to default factory.
+ */
+ public static function instance($prototype = null) {
+ static $instance = null;
+ if ($prototype !== null) {
+ $instance = $prototype;
+ } elseif ($instance === null || $prototype == true) {
+ $instance = new HTMLPurifier_LanguageFactory();
+ $instance->setup();
+ }
+ return $instance;
+ }
+
+ /**
+ * Sets up the singleton, much like a constructor
+ * @note Prevents people from getting this outside of the singleton
+ */
+ public function setup() {
+ $this->validator = new HTMLPurifier_AttrDef_Lang();
+ $this->dir = HTMLPURIFIER_PREFIX . '/HTMLPurifier';
+ }
+
+ /**
+ * Creates a language object, handles class fallbacks
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ * @param $code Code to override configuration with. Private parameter.
+ */
+ public function create($config, $context, $code = false) {
+
+ // validate language code
+ if ($code === false) {
+ $code = $this->validator->validate(
+ $config->get('Core.Language'), $config, $context
+ );
+ } else {
+ $code = $this->validator->validate($code, $config, $context);
+ }
+ if ($code === false) $code = 'en'; // malformed code becomes English
+
+ $pcode = str_replace('-', '_', $code); // make valid PHP classname
+ static $depth = 0; // recursion protection
+
+ if ($code == 'en') {
+ $lang = new HTMLPurifier_Language($config, $context);
+ } else {
+ $class = 'HTMLPurifier_Language_' . $pcode;
+ $file = $this->dir . '/Language/classes/' . $code . '.php';
+ if (file_exists($file) || class_exists($class, false)) {
+ $lang = new $class($config, $context);
+ } else {
+ // Go fallback
+ $raw_fallback = $this->getFallbackFor($code);
+ $fallback = $raw_fallback ? $raw_fallback : 'en';
+ $depth++;
+ $lang = $this->create($config, $context, $fallback);
+ if (!$raw_fallback) {
+ $lang->error = true;
+ }
+ $depth--;
+ }
+ }
+
+ $lang->code = $code;
+
+ return $lang;
+
+ }
+
+ /**
+ * Returns the fallback language for language
+ * @note Loads the original language into cache
+ * @param $code string language code
+ */
+ public function getFallbackFor($code) {
+ $this->loadLanguage($code);
+ return $this->cache[$code]['fallback'];
+ }
+
+ /**
+ * Loads language into the cache, handles message file and fallbacks
+ * @param $code string language code
+ */
+ public function loadLanguage($code) {
+ static $languages_seen = array(); // recursion guard
+
+ // abort if we've already loaded it
+ if (isset($this->cache[$code])) return;
+
+ // generate filename
+ $filename = $this->dir . '/Language/messages/' . $code . '.php';
+
+ // default fallback : may be overwritten by the ensuing include
+ $fallback = ($code != 'en') ? 'en' : false;
+
+ // load primary localisation
+ if (!file_exists($filename)) {
+ // skip the include: will rely solely on fallback
+ $filename = $this->dir . '/Language/messages/en.php';
+ $cache = array();
+ } else {
+ include $filename;
+ $cache = compact($this->keys);
+ }
+
+ // load fallback localisation
+ if (!empty($fallback)) {
+
+ // infinite recursion guard
+ if (isset($languages_seen[$code])) {
+ trigger_error('Circular fallback reference in language ' .
+ $code, E_USER_ERROR);
+ $fallback = 'en';
+ }
+ $language_seen[$code] = true;
+
+ // load the fallback recursively
+ $this->loadLanguage($fallback);
+ $fallback_cache = $this->cache[$fallback];
+
+ // merge fallback with current language
+ foreach ( $this->keys as $key ) {
+ if (isset($cache[$key]) && isset($fallback_cache[$key])) {
+ if (isset($this->mergeable_keys_map[$key])) {
+ $cache[$key] = $cache[$key] + $fallback_cache[$key];
+ } elseif (isset($this->mergeable_keys_list[$key])) {
+ $cache[$key] = array_merge( $fallback_cache[$key], $cache[$key] );
+ }
+ } else {
+ $cache[$key] = $fallback_cache[$key];
+ }
+ }
+
+ }
+
+ // save to cache for later retrieval
+ $this->cache[$code] = $cache;
+
+ return;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Represents a measurable length, with a string numeric magnitude
+ * and a unit. This object is immutable.
+ */
+class HTMLPurifier_Length
+{
+
+ /**
+ * String numeric magnitude.
+ */
+ protected $n;
+
+ /**
+ * String unit. False is permitted if $n = 0.
+ */
+ protected $unit;
+
+ /**
+ * Whether or not this length is valid. Null if not calculated yet.
+ */
+ protected $isValid;
+
+ /**
+ * Lookup array of units recognized by CSS 2.1
+ */
+ protected static $allowedUnits = array(
+ 'em' => true, 'ex' => true, 'px' => true, 'in' => true,
+ 'cm' => true, 'mm' => true, 'pt' => true, 'pc' => true
+ );
+
+ /**
+ * @param number $n Magnitude
+ * @param string $u Unit
+ */
+ public function __construct($n = '0', $u = false) {
+ $this->n = (string) $n;
+ $this->unit = $u !== false ? (string) $u : false;
+ }
+
+ /**
+ * @param string $s Unit string, like '2em' or '3.4in'
+ * @warning Does not perform validation.
+ */
+ static public function make($s) {
+ if ($s instanceof HTMLPurifier_Length) return $s;
+ $n_length = strspn($s, '1234567890.+-');
+ $n = substr($s, 0, $n_length);
+ $unit = substr($s, $n_length);
+ if ($unit === '') $unit = false;
+ return new HTMLPurifier_Length($n, $unit);
+ }
+
+ /**
+ * Validates the number and unit.
+ */
+ protected function validate() {
+ // Special case:
+ if ($this->n === '+0' || $this->n === '-0') $this->n = '0';
+ if ($this->n === '0' && $this->unit === false) return true;
+ if (!ctype_lower($this->unit)) $this->unit = strtolower($this->unit);
+ if (!isset(HTMLPurifier_Length::$allowedUnits[$this->unit])) return false;
+ // Hack:
+ $def = new HTMLPurifier_AttrDef_CSS_Number();
+ $result = $def->validate($this->n, false, false);
+ if ($result === false) return false;
+ $this->n = $result;
+ return true;
+ }
+
+ /**
+ * Returns string representation of number.
+ */
+ public function toString() {
+ if (!$this->isValid()) return false;
+ return $this->n . $this->unit;
+ }
+
+ /**
+ * Retrieves string numeric magnitude.
+ */
+ public function getN() {return $this->n;}
+
+ /**
+ * Retrieves string unit.
+ */
+ public function getUnit() {return $this->unit;}
+
+ /**
+ * Returns true if this length unit is valid.
+ */
+ public function isValid() {
+ if ($this->isValid === null) $this->isValid = $this->validate();
+ return $this->isValid;
+ }
+
+ /**
+ * Compares two lengths, and returns 1 if greater, -1 if less and 0 if equal.
+ * @warning If both values are too large or small, this calculation will
+ * not work properly
+ */
+ public function compareTo($l) {
+ if ($l === false) return false;
+ if ($l->unit !== $this->unit) {
+ $converter = new HTMLPurifier_UnitConverter();
+ $l = $converter->convert($l, $this->unit);
+ if ($l === false) return false;
+ }
+ return $this->n - $l->n;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Forgivingly lexes HTML (SGML-style) markup into tokens.
+ *
+ * A lexer parses a string of SGML-style markup and converts them into
+ * corresponding tokens. It doesn't check for well-formedness, although its
+ * internal mechanism may make this automatic (such as the case of
+ * HTMLPurifier_Lexer_DOMLex). There are several implementations to choose
+ * from.
+ *
+ * A lexer is HTML-oriented: it might work with XML, but it's not
+ * recommended, as we adhere to a subset of the specification for optimization
+ * reasons. This might change in the future. Also, most tokenizers are not
+ * expected to handle DTDs or PIs.
+ *
+ * This class should not be directly instantiated, but you may use create() to
+ * retrieve a default copy of the lexer. Being a supertype, this class
+ * does not actually define any implementation, but offers commonly used
+ * convenience functions for subclasses.
+ *
+ * @note The unit tests will instantiate this class for testing purposes, as
+ * many of the utility functions require a class to be instantiated.
+ * This means that, even though this class is not runnable, it will
+ * not be declared abstract.
+ *
+ * @par
+ *
+ * @note
+ * We use tokens rather than create a DOM representation because DOM would:
+ *
+ * @par
+ * -# Require more processing and memory to create,
+ * -# Is not streamable, and
+ * -# Has the entire document structure (html and body not needed).
+ *
+ * @par
+ * However, DOM is helpful in that it makes it easy to move around nodes
+ * without a lot of lookaheads to see when a tag is closed. This is a
+ * limitation of the token system and some workarounds would be nice.
+ */
+class HTMLPurifier_Lexer
+{
+
+ /**
+ * Whether or not this lexer implements line-number/column-number tracking.
+ * If it does, set to true.
+ */
+ public $tracksLineNumbers = false;
+
+ // -- STATIC ----------------------------------------------------------
+
+ /**
+ * Retrieves or sets the default Lexer as a Prototype Factory.
+ *
+ * By default HTMLPurifier_Lexer_DOMLex will be returned. There are
+ * a few exceptions involving special features that only DirectLex
+ * implements.
+ *
+ * @note The behavior of this class has changed, rather than accepting
+ * a prototype object, it now accepts a configuration object.
+ * To specify your own prototype, set %Core.LexerImpl to it.
+ * This change in behavior de-singletonizes the lexer object.
+ *
+ * @param $config Instance of HTMLPurifier_Config
+ * @return Concrete lexer.
+ */
+ public static function create($config) {
+
+ if (!($config instanceof HTMLPurifier_Config)) {
+ $lexer = $config;
+ trigger_error("Passing a prototype to
+ HTMLPurifier_Lexer::create() is deprecated, please instead
+ use %Core.LexerImpl", E_USER_WARNING);
+ } else {
+ $lexer = $config->get('Core.LexerImpl');
+ }
+
+ $needs_tracking =
+ $config->get('Core.MaintainLineNumbers') ||
+ $config->get('Core.CollectErrors');
+
+ $inst = null;
+ if (is_object($lexer)) {
+ $inst = $lexer;
+ } else {
+
+ if (is_null($lexer)) { do {
+ // auto-detection algorithm
+
+ if ($needs_tracking) {
+ $lexer = 'DirectLex';
+ break;
+ }
+
+ if (
+ class_exists('DOMDocument') &&
+ method_exists('DOMDocument', 'loadHTML') &&
+ !extension_loaded('domxml')
+ ) {
+ // check for DOM support, because while it's part of the
+ // core, it can be disabled compile time. Also, the PECL
+ // domxml extension overrides the default DOM, and is evil
+ // and nasty and we shan't bother to support it
+ $lexer = 'DOMLex';
+ } else {
+ $lexer = 'DirectLex';
+ }
+
+ } while(0); } // do..while so we can break
+
+ // instantiate recognized string names
+ switch ($lexer) {
+ case 'DOMLex':
+ $inst = new HTMLPurifier_Lexer_DOMLex();
+ break;
+ case 'DirectLex':
+ $inst = new HTMLPurifier_Lexer_DirectLex();
+ break;
+ case 'PH5P':
+ $inst = new HTMLPurifier_Lexer_PH5P();
+ break;
+ default:
+ throw new HTMLPurifier_Exception("Cannot instantiate unrecognized Lexer type " . htmlspecialchars($lexer));
+ }
+ }
+
+ if (!$inst) throw new HTMLPurifier_Exception('No lexer was instantiated');
+
+ // once PHP DOM implements native line numbers, or we
+ // hack out something using XSLT, remove this stipulation
+ if ($needs_tracking && !$inst->tracksLineNumbers) {
+ throw new HTMLPurifier_Exception('Cannot use lexer that does not support line numbers with Core.MaintainLineNumbers or Core.CollectErrors (use DirectLex instead)');
+ }
+
+ return $inst;
+
+ }
+
+ // -- CONVENIENCE MEMBERS ---------------------------------------------
+
+ public function __construct() {
+ $this->_entity_parser = new HTMLPurifier_EntityParser();
+ }
+
+ /**
+ * Most common entity to raw value conversion table for special entities.
+ */
+ protected $_special_entity2str =
+ array(
+ '"' => '"',
+ '&' => '&',
+ '<' => '<',
+ '>' => '>',
+ ''' => "'",
+ ''' => "'",
+ ''' => "'"
+ );
+
+ /**
+ * Parses special entities into the proper characters.
+ *
+ * This string will translate escaped versions of the special characters
+ * into the correct ones.
+ *
+ * @warning
+ * You should be able to treat the output of this function as
+ * completely parsed, but that's only because all other entities should
+ * have been handled previously in substituteNonSpecialEntities()
+ *
+ * @param $string String character data to be parsed.
+ * @returns Parsed character data.
+ */
+ public function parseData($string) {
+
+ // following functions require at least one character
+ if ($string === '') return '';
+
+ // subtracts amps that cannot possibly be escaped
+ $num_amp = substr_count($string, '&') - substr_count($string, '& ') -
+ ($string[strlen($string)-1] === '&' ? 1 : 0);
+
+ if (!$num_amp) return $string; // abort if no entities
+ $num_esc_amp = substr_count($string, '&');
+ $string = strtr($string, $this->_special_entity2str);
+
+ // code duplication for sake of optimization, see above
+ $num_amp_2 = substr_count($string, '&') - substr_count($string, '& ') -
+ ($string[strlen($string)-1] === '&' ? 1 : 0);
+
+ if ($num_amp_2 <= $num_esc_amp) return $string;
+
+ // hmm... now we have some uncommon entities. Use the callback.
+ $string = $this->_entity_parser->substituteSpecialEntities($string);
+ return $string;
+ }
+
+ /**
+ * Lexes an HTML string into tokens.
+ *
+ * @param $string String HTML.
+ * @return HTMLPurifier_Token array representation of HTML.
+ */
+ public function tokenizeHTML($string, $config, $context) {
+ trigger_error('Call to abstract class', E_USER_ERROR);
+ }
+
+ /**
+ * Translates CDATA sections into regular sections (through escaping).
+ *
+ * @param $string HTML string to process.
+ * @returns HTML with CDATA sections escaped.
+ */
+ protected static function escapeCDATA($string) {
+ return preg_replace_callback(
+ '/<!\[CDATA\[(.+?)\]\]>/s',
+ array('HTMLPurifier_Lexer', 'CDATACallback'),
+ $string
+ );
+ }
+
+ /**
+ * Special CDATA case that is especially convoluted for <script>
+ */
+ protected static function escapeCommentedCDATA($string) {
+ return preg_replace_callback(
+ '#<!--//--><!\[CDATA\[//><!--(.+?)//--><!\]\]>#s',
+ array('HTMLPurifier_Lexer', 'CDATACallback'),
+ $string
+ );
+ }
+
+ /**
+ * Callback function for escapeCDATA() that does the work.
+ *
+ * @warning Though this is public in order to let the callback happen,
+ * calling it directly is not recommended.
+ * @params $matches PCRE matches array, with index 0 the entire match
+ * and 1 the inside of the CDATA section.
+ * @returns Escaped internals of the CDATA section.
+ */
+ protected static function CDATACallback($matches) {
+ // not exactly sure why the character set is needed, but whatever
+ return htmlspecialchars($matches[1], ENT_COMPAT, 'UTF-8');
+ }
+
+ /**
+ * Takes a piece of HTML and normalizes it by converting entities, fixing
+ * encoding, extracting bits, and other good stuff.
+ * @todo Consider making protected
+ */
+ public function normalize($html, $config, $context) {
+
+ // normalize newlines to \n
+ $html = str_replace("\r\n", "\n", $html);
+ $html = str_replace("\r", "\n", $html);
+
+ if ($config->get('HTML.Trusted')) {
+ // escape convoluted CDATA
+ $html = $this->escapeCommentedCDATA($html);
+ }
+
+ // escape CDATA
+ $html = $this->escapeCDATA($html);
+
+ // extract body from document if applicable
+ if ($config->get('Core.ConvertDocumentToFragment')) {
+ $html = $this->extractBody($html);
+ }
+
+ // expand entities that aren't the big five
+ $html = $this->_entity_parser->substituteNonSpecialEntities($html);
+
+ // clean into wellformed UTF-8 string for an SGML context: this has
+ // to be done after entity expansion because the entities sometimes
+ // represent non-SGML characters (horror, horror!)
+ $html = HTMLPurifier_Encoder::cleanUTF8($html);
+
+ return $html;
+ }
+
+ /**
+ * Takes a string of HTML (fragment or document) and returns the content
+ * @todo Consider making protected
+ */
+ public function extractBody($html) {
+ $matches = array();
+ $result = preg_match('!<body[^>]*>(.*)</body>!is', $html, $matches);
+ if ($result) {
+ return $matches[1];
+ } else {
+ return $html;
+ }
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Parser that uses PHP 5's DOM extension (part of the core).
+ *
+ * In PHP 5, the DOM XML extension was revamped into DOM and added to the core.
+ * It gives us a forgiving HTML parser, which we use to transform the HTML
+ * into a DOM, and then into the tokens. It is blazingly fast (for large
+ * documents, it performs twenty times faster than
+ * HTMLPurifier_Lexer_DirectLex,and is the default choice for PHP 5.
+ *
+ * @note Any empty elements will have empty tokens associated with them, even if
+ * this is prohibited by the spec. This is cannot be fixed until the spec
+ * comes into play.
+ *
+ * @note PHP's DOM extension does not actually parse any entities, we use
+ * our own function to do that.
+ *
+ * @warning DOM tends to drop whitespace, which may wreak havoc on indenting.
+ * If this is a huge problem, due to the fact that HTML is hand
+ * edited and you are unable to get a parser cache that caches the
+ * the output of HTML Purifier while keeping the original HTML lying
+ * around, you may want to run Tidy on the resulting output or use
+ * HTMLPurifier_DirectLex
+ */
+
+class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
+{
+
+ private $factory;
+
+ public function __construct() {
+ // setup the factory
+ parent::__construct();
+ $this->factory = new HTMLPurifier_TokenFactory();
+ }
+
+ public function tokenizeHTML($html, $config, $context) {
+
+ $html = $this->normalize($html, $config, $context);
+
+ // attempt to armor stray angled brackets that cannot possibly
+ // form tags and thus are probably being used as emoticons
+ if ($config->get('Core.AggressivelyFixLt')) {
+ $char = '[^a-z!\/]';
+ $comment = "/<!--(.*?)(-->|\z)/is";
+ $html = preg_replace_callback($comment, array($this, 'callbackArmorCommentEntities'), $html);
+ do {
+ $old = $html;
+ $html = preg_replace("/<($char)/i", '<\\1', $html);
+ } while ($html !== $old);
+ $html = preg_replace_callback($comment, array($this, 'callbackUndoCommentSubst'), $html); // fix comments
+ }
+
+ // preprocess html, essential for UTF-8
+ $html = $this->wrapHTML($html, $config, $context);
+
+ $doc = new DOMDocument();
+ $doc->encoding = 'UTF-8'; // theoretically, the above has this covered
+
+ set_error_handler(array($this, 'muteErrorHandler'));
+ $doc->loadHTML($html);
+ restore_error_handler();
+
+ $tokens = array();
+ $this->tokenizeDOM(
+ $doc->getElementsByTagName('html')->item(0)-> // <html>
+ getElementsByTagName('body')->item(0)-> // <body>
+ getElementsByTagName('div')->item(0) // <div>
+ , $tokens);
+ return $tokens;
+ }
+
+ /**
+ * Recursive function that tokenizes a node, putting it into an accumulator.
+ *
+ * @param $node DOMNode to be tokenized.
+ * @param $tokens Array-list of already tokenized tokens.
+ * @param $collect Says whether or start and close are collected, set to
+ * false at first recursion because it's the implicit DIV
+ * tag you're dealing with.
+ * @returns Tokens of node appended to previously passed tokens.
+ */
+ protected function tokenizeDOM($node, &$tokens, $collect = false) {
+
+ // intercept non element nodes. WE MUST catch all of them,
+ // but we're not getting the character reference nodes because
+ // those should have been preprocessed
+ if ($node->nodeType === XML_TEXT_NODE) {
+ $tokens[] = $this->factory->createText($node->data);
+ return;
+ } elseif ($node->nodeType === XML_CDATA_SECTION_NODE) {
+ // undo libxml's special treatment of <script> and <style> tags
+ $last = end($tokens);
+ $data = $node->data;
+ // (note $node->tagname is already normalized)
+ if ($last instanceof HTMLPurifier_Token_Start && ($last->name == 'script' || $last->name == 'style')) {
+ $new_data = trim($data);
+ if (substr($new_data, 0, 4) === '<!--') {
+ $data = substr($new_data, 4);
+ if (substr($data, -3) === '-->') {
+ $data = substr($data, 0, -3);
+ } else {
+ // Highly suspicious! Not sure what to do...
+ }
+ }
+ }
+ $tokens[] = $this->factory->createText($this->parseData($data));
+ return;
+ } elseif ($node->nodeType === XML_COMMENT_NODE) {
+ // this is code is only invoked for comments in script/style in versions
+ // of libxml pre-2.6.28 (regular comments, of course, are still
+ // handled regularly)
+ $tokens[] = $this->factory->createComment($node->data);
+ return;
+ } elseif (
+ // not-well tested: there may be other nodes we have to grab
+ $node->nodeType !== XML_ELEMENT_NODE
+ ) {
+ return;
+ }
+
+ $attr = $node->hasAttributes() ?
+ $this->transformAttrToAssoc($node->attributes) :
+ array();
+
+ // We still have to make sure that the element actually IS empty
+ if (!$node->childNodes->length) {
+ if ($collect) {
+ $tokens[] = $this->factory->createEmpty($node->tagName, $attr);
+ }
+ } else {
+ if ($collect) { // don't wrap on first iteration
+ $tokens[] = $this->factory->createStart(
+ $tag_name = $node->tagName, // somehow, it get's dropped
+ $attr
+ );
+ }
+ foreach ($node->childNodes as $node) {
+ // remember, it's an accumulator. Otherwise, we'd have
+ // to use array_merge
+ $this->tokenizeDOM($node, $tokens, true);
+ }
+ if ($collect) {
+ $tokens[] = $this->factory->createEnd($tag_name);
+ }
+ }
+
+ }
+
+ /**
+ * Converts a DOMNamedNodeMap of DOMAttr objects into an assoc array.
+ *
+ * @param $attribute_list DOMNamedNodeMap of DOMAttr objects.
+ * @returns Associative array of attributes.
+ */
+ protected function transformAttrToAssoc($node_map) {
+ // NamedNodeMap is documented very well, so we're using undocumented
+ // features, namely, the fact that it implements Iterator and
+ // has a ->length attribute
+ if ($node_map->length === 0) return array();
+ $array = array();
+ foreach ($node_map as $attr) {
+ $array[$attr->name] = $attr->value;
+ }
+ return $array;
+ }
+
+ /**
+ * An error handler that mutes all errors
+ */
+ public function muteErrorHandler($errno, $errstr) {}
+
+ /**
+ * Callback function for undoing escaping of stray angled brackets
+ * in comments
+ */
+ public function callbackUndoCommentSubst($matches) {
+ return '<!--' . strtr($matches[1], array('&'=>'&','<'=>'<')) . $matches[2];
+ }
+
+ /**
+ * Callback function that entity-izes ampersands in comments so that
+ * callbackUndoCommentSubst doesn't clobber them
+ */
+ public function callbackArmorCommentEntities($matches) {
+ return '<!--' . str_replace('&', '&', $matches[1]) . $matches[2];
+ }
+
+ /**
+ * Wraps an HTML fragment in the necessary HTML
+ */
+ protected function wrapHTML($html, $config, $context) {
+ $def = $config->getDefinition('HTML');
+ $ret = '';
+
+ if (!empty($def->doctype->dtdPublic) || !empty($def->doctype->dtdSystem)) {
+ $ret .= '<!DOCTYPE html ';
+ if (!empty($def->doctype->dtdPublic)) $ret .= 'PUBLIC "' . $def->doctype->dtdPublic . '" ';
+ if (!empty($def->doctype->dtdSystem)) $ret .= '"' . $def->doctype->dtdSystem . '" ';
+ $ret .= '>';
+ }
+
+ $ret .= '<html><head>';
+ $ret .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
+ // No protection if $html contains a stray </div>!
+ $ret .= '</head><body><div>'.$html.'</div></body></html>';
+ return $ret;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Our in-house implementation of a parser.
+ *
+ * A pure PHP parser, DirectLex has absolutely no dependencies, making
+ * it a reasonably good default for PHP4. Written with efficiency in mind,
+ * it can be four times faster than HTMLPurifier_Lexer_PEARSax3, although it
+ * pales in comparison to HTMLPurifier_Lexer_DOMLex.
+ *
+ * @todo Reread XML spec and document differences.
+ */
+class HTMLPurifier_Lexer_DirectLex extends HTMLPurifier_Lexer
+{
+
+ public $tracksLineNumbers = true;
+
+ /**
+ * Whitespace characters for str(c)spn.
+ */
+ protected $_whitespace = "\x20\x09\x0D\x0A";
+
+ /**
+ * Callback function for script CDATA fudge
+ * @param $matches, in form of array(opening tag, contents, closing tag)
+ */
+ protected function scriptCallback($matches) {
+ return $matches[1] . htmlspecialchars($matches[2], ENT_COMPAT, 'UTF-8') . $matches[3];
+ }
+
+ public function tokenizeHTML($html, $config, $context) {
+
+ // special normalization for script tags without any armor
+ // our "armor" heurstic is a < sign any number of whitespaces after
+ // the first script tag
+ if ($config->get('HTML.Trusted')) {
+ $html = preg_replace_callback('#(<script[^>]*>)(\s*[^<].+?)(</script>)#si',
+ array($this, 'scriptCallback'), $html);
+ }
+
+ $html = $this->normalize($html, $config, $context);
+
+ $cursor = 0; // our location in the text
+ $inside_tag = false; // whether or not we're parsing the inside of a tag
+ $array = array(); // result array
+
+ // This is also treated to mean maintain *column* numbers too
+ $maintain_line_numbers = $config->get('Core.MaintainLineNumbers');
+
+ if ($maintain_line_numbers === null) {
+ // automatically determine line numbering by checking
+ // if error collection is on
+ $maintain_line_numbers = $config->get('Core.CollectErrors');
+ }
+
+ if ($maintain_line_numbers) {
+ $current_line = 1;
+ $current_col = 0;
+ $length = strlen($html);
+ } else {
+ $current_line = false;
+ $current_col = false;
+ $length = false;
+ }
+ $context->register('CurrentLine', $current_line);
+ $context->register('CurrentCol', $current_col);
+ $nl = "\n";
+ // how often to manually recalculate. This will ALWAYS be right,
+ // but it's pretty wasteful. Set to 0 to turn off
+ $synchronize_interval = $config->get('Core.DirectLexLineNumberSyncInterval');
+
+ $e = false;
+ if ($config->get('Core.CollectErrors')) {
+ $e =& $context->get('ErrorCollector');
+ }
+
+ // for testing synchronization
+ $loops = 0;
+
+ while(++$loops) {
+
+ // $cursor is either at the start of a token, or inside of
+ // a tag (i.e. there was a < immediately before it), as indicated
+ // by $inside_tag
+
+ if ($maintain_line_numbers) {
+
+ // $rcursor, however, is always at the start of a token.
+ $rcursor = $cursor - (int) $inside_tag;
+
+ // Column number is cheap, so we calculate it every round.
+ // We're interested at the *end* of the newline string, so
+ // we need to add strlen($nl) == 1 to $nl_pos before subtracting it
+ // from our "rcursor" position.
+ $nl_pos = strrpos($html, $nl, $rcursor - $length);
+ $current_col = $rcursor - (is_bool($nl_pos) ? 0 : $nl_pos + 1);
+
+ // recalculate lines
+ if (
+ $synchronize_interval && // synchronization is on
+ $cursor > 0 && // cursor is further than zero
+ $loops % $synchronize_interval === 0 // time to synchronize!
+ ) {
+ $current_line = 1 + $this->substrCount($html, $nl, 0, $cursor);
+ }
+
+ }
+
+ $position_next_lt = strpos($html, '<', $cursor);
+ $position_next_gt = strpos($html, '>', $cursor);
+
+ // triggers on "<b>asdf</b>" but not "asdf <b></b>"
+ // special case to set up context
+ if ($position_next_lt === $cursor) {
+ $inside_tag = true;
+ $cursor++;
+ }
+
+ if (!$inside_tag && $position_next_lt !== false) {
+ // We are not inside tag and there still is another tag to parse
+ $token = new
+ HTMLPurifier_Token_Text(
+ $this->parseData(
+ substr(
+ $html, $cursor, $position_next_lt - $cursor
+ )
+ )
+ );
+ if ($maintain_line_numbers) {
+ $token->rawPosition($current_line, $current_col);
+ $current_line += $this->substrCount($html, $nl, $cursor, $position_next_lt - $cursor);
+ }
+ $array[] = $token;
+ $cursor = $position_next_lt + 1;
+ $inside_tag = true;
+ continue;
+ } elseif (!$inside_tag) {
+ // We are not inside tag but there are no more tags
+ // If we're already at the end, break
+ if ($cursor === strlen($html)) break;
+ // Create Text of rest of string
+ $token = new
+ HTMLPurifier_Token_Text(
+ $this->parseData(
+ substr(
+ $html, $cursor
+ )
+ )
+ );
+ if ($maintain_line_numbers) $token->rawPosition($current_line, $current_col);
+ $array[] = $token;
+ break;
+ } elseif ($inside_tag && $position_next_gt !== false) {
+ // We are in tag and it is well formed
+ // Grab the internals of the tag
+ $strlen_segment = $position_next_gt - $cursor;
+
+ if ($strlen_segment < 1) {
+ // there's nothing to process!
+ $token = new HTMLPurifier_Token_Text('<');
+ $cursor++;
+ continue;
+ }
+
+ $segment = substr($html, $cursor, $strlen_segment);
+
+ if ($segment === false) {
+ // somehow, we attempted to access beyond the end of
+ // the string, defense-in-depth, reported by Nate Abele
+ break;
+ }
+
+ // Check if it's a comment
+ if (
+ substr($segment, 0, 3) === '!--'
+ ) {
+ // re-determine segment length, looking for -->
+ $position_comment_end = strpos($html, '-->', $cursor);
+ if ($position_comment_end === false) {
+ // uh oh, we have a comment that extends to
+ // infinity. Can't be helped: set comment
+ // end position to end of string
+ if ($e) $e->send(E_WARNING, 'Lexer: Unclosed comment');
+ $position_comment_end = strlen($html);
+ $end = true;
+ } else {
+ $end = false;
+ }
+ $strlen_segment = $position_comment_end - $cursor;
+ $segment = substr($html, $cursor, $strlen_segment);
+ $token = new
+ HTMLPurifier_Token_Comment(
+ substr(
+ $segment, 3, $strlen_segment - 3
+ )
+ );
+ if ($maintain_line_numbers) {
+ $token->rawPosition($current_line, $current_col);
+ $current_line += $this->substrCount($html, $nl, $cursor, $strlen_segment);
+ }
+ $array[] = $token;
+ $cursor = $end ? $position_comment_end : $position_comment_end + 3;
+ $inside_tag = false;
+ continue;
+ }
+
+ // Check if it's an end tag
+ $is_end_tag = (strpos($segment,'/') === 0);
+ if ($is_end_tag) {
+ $type = substr($segment, 1);
+ $token = new HTMLPurifier_Token_End($type);
+ if ($maintain_line_numbers) {
+ $token->rawPosition($current_line, $current_col);
+ $current_line += $this->substrCount($html, $nl, $cursor, $position_next_gt - $cursor);
+ }
+ $array[] = $token;
+ $inside_tag = false;
+ $cursor = $position_next_gt + 1;
+ continue;
+ }
+
+ // Check leading character is alnum, if not, we may
+ // have accidently grabbed an emoticon. Translate into
+ // text and go our merry way
+ if (!ctype_alpha($segment[0])) {
+ // XML: $segment[0] !== '_' && $segment[0] !== ':'
+ if ($e) $e->send(E_NOTICE, 'Lexer: Unescaped lt');
+ $token = new HTMLPurifier_Token_Text('<');
+ if ($maintain_line_numbers) {
+ $token->rawPosition($current_line, $current_col);
+ $current_line += $this->substrCount($html, $nl, $cursor, $position_next_gt - $cursor);
+ }
+ $array[] = $token;
+ $inside_tag = false;
+ continue;
+ }
+
+ // Check if it is explicitly self closing, if so, remove
+ // trailing slash. Remember, we could have a tag like <br>, so
+ // any later token processing scripts must convert improperly
+ // classified EmptyTags from StartTags.
+ $is_self_closing = (strrpos($segment,'/') === $strlen_segment-1);
+ if ($is_self_closing) {
+ $strlen_segment--;
+ $segment = substr($segment, 0, $strlen_segment);
+ }
+
+ // Check if there are any attributes
+ $position_first_space = strcspn($segment, $this->_whitespace);
+
+ if ($position_first_space >= $strlen_segment) {
+ if ($is_self_closing) {
+ $token = new HTMLPurifier_Token_Empty($segment);
+ } else {
+ $token = new HTMLPurifier_Token_Start($segment);
+ }
+ if ($maintain_line_numbers) {
+ $token->rawPosition($current_line, $current_col);
+ $current_line += $this->substrCount($html, $nl, $cursor, $position_next_gt - $cursor);
+ }
+ $array[] = $token;
+ $inside_tag = false;
+ $cursor = $position_next_gt + 1;
+ continue;
+ }
+
+ // Grab out all the data
+ $type = substr($segment, 0, $position_first_space);
+ $attribute_string =
+ trim(
+ substr(
+ $segment, $position_first_space
+ )
+ );
+ if ($attribute_string) {
+ $attr = $this->parseAttributeString(
+ $attribute_string
+ , $config, $context
+ );
+ } else {
+ $attr = array();
+ }
+
+ if ($is_self_closing) {
+ $token = new HTMLPurifier_Token_Empty($type, $attr);
+ } else {
+ $token = new HTMLPurifier_Token_Start($type, $attr);
+ }
+ if ($maintain_line_numbers) {
+ $token->rawPosition($current_line, $current_col);
+ $current_line += $this->substrCount($html, $nl, $cursor, $position_next_gt - $cursor);
+ }
+ $array[] = $token;
+ $cursor = $position_next_gt + 1;
+ $inside_tag = false;
+ continue;
+ } else {
+ // inside tag, but there's no ending > sign
+ if ($e) $e->send(E_WARNING, 'Lexer: Missing gt');
+ $token = new
+ HTMLPurifier_Token_Text(
+ '<' .
+ $this->parseData(
+ substr($html, $cursor)
+ )
+ );
+ if ($maintain_line_numbers) $token->rawPosition($current_line, $current_col);
+ // no cursor scroll? Hmm...
+ $array[] = $token;
+ break;
+ }
+ break;
+ }
+
+ $context->destroy('CurrentLine');
+ $context->destroy('CurrentCol');
+ return $array;
+ }
+
+ /**
+ * PHP 5.0.x compatible substr_count that implements offset and length
+ */
+ protected function substrCount($haystack, $needle, $offset, $length) {
+ static $oldVersion;
+ if ($oldVersion === null) {
+ $oldVersion = version_compare(PHP_VERSION, '5.1', '<');
+ }
+ if ($oldVersion) {
+ $haystack = substr($haystack, $offset, $length);
+ return substr_count($haystack, $needle);
+ } else {
+ return substr_count($haystack, $needle, $offset, $length);
+ }
+ }
+
+ /**
+ * Takes the inside of an HTML tag and makes an assoc array of attributes.
+ *
+ * @param $string Inside of tag excluding name.
+ * @returns Assoc array of attributes.
+ */
+ public function parseAttributeString($string, $config, $context) {
+ $string = (string) $string; // quick typecast
+
+ if ($string == '') return array(); // no attributes
+
+ $e = false;
+ if ($config->get('Core.CollectErrors')) {
+ $e =& $context->get('ErrorCollector');
+ }
+
+ // let's see if we can abort as quickly as possible
+ // one equal sign, no spaces => one attribute
+ $num_equal = substr_count($string, '=');
+ $has_space = strpos($string, ' ');
+ if ($num_equal === 0 && !$has_space) {
+ // bool attribute
+ return array($string => $string);
+ } elseif ($num_equal === 1 && !$has_space) {
+ // only one attribute
+ list($key, $quoted_value) = explode('=', $string);
+ $quoted_value = trim($quoted_value);
+ if (!$key) {
+ if ($e) $e->send(E_ERROR, 'Lexer: Missing attribute key');
+ return array();
+ }
+ if (!$quoted_value) return array($key => '');
+ $first_char = @$quoted_value[0];
+ $last_char = @$quoted_value[strlen($quoted_value)-1];
+
+ $same_quote = ($first_char == $last_char);
+ $open_quote = ($first_char == '"' || $first_char == "'");
+
+ if ( $same_quote && $open_quote) {
+ // well behaved
+ $value = substr($quoted_value, 1, strlen($quoted_value) - 2);
+ } else {
+ // not well behaved
+ if ($open_quote) {
+ if ($e) $e->send(E_ERROR, 'Lexer: Missing end quote');
+ $value = substr($quoted_value, 1);
+ } else {
+ $value = $quoted_value;
+ }
+ }
+ if ($value === false) $value = '';
+ return array($key => $value);
+ }
+
+ // setup loop environment
+ $array = array(); // return assoc array of attributes
+ $cursor = 0; // current position in string (moves forward)
+ $size = strlen($string); // size of the string (stays the same)
+
+ // if we have unquoted attributes, the parser expects a terminating
+ // space, so let's guarantee that there's always a terminating space.
+ $string .= ' ';
+
+ while(true) {
+
+ if ($cursor >= $size) {
+ break;
+ }
+
+ $cursor += ($value = strspn($string, $this->_whitespace, $cursor));
+ // grab the key
+
+ $key_begin = $cursor; //we're currently at the start of the key
+
+ // scroll past all characters that are the key (not whitespace or =)
+ $cursor += strcspn($string, $this->_whitespace . '=', $cursor);
+
+ $key_end = $cursor; // now at the end of the key
+
+ $key = substr($string, $key_begin, $key_end - $key_begin);
+
+ if (!$key) {
+ if ($e) $e->send(E_ERROR, 'Lexer: Missing attribute key');
+ $cursor += strcspn($string, $this->_whitespace, $cursor + 1); // prevent infinite loop
+ continue; // empty key
+ }
+
+ // scroll past all whitespace
+ $cursor += strspn($string, $this->_whitespace, $cursor);
+
+ if ($cursor >= $size) {
+ $array[$key] = $key;
+ break;
+ }
+
+ // if the next character is an equal sign, we've got a regular
+ // pair, otherwise, it's a bool attribute
+ $first_char = @$string[$cursor];
+
+ if ($first_char == '=') {
+ // key="value"
+
+ $cursor++;
+ $cursor += strspn($string, $this->_whitespace, $cursor);
+
+ if ($cursor === false) {
+ $array[$key] = '';
+ break;
+ }
+
+ // we might be in front of a quote right now
+
+ $char = @$string[$cursor];
+
+ if ($char == '"' || $char == "'") {
+ // it's quoted, end bound is $char
+ $cursor++;
+ $value_begin = $cursor;
+ $cursor = strpos($string, $char, $cursor);
+ $value_end = $cursor;
+ } else {
+ // it's not quoted, end bound is whitespace
+ $value_begin = $cursor;
+ $cursor += strcspn($string, $this->_whitespace, $cursor);
+ $value_end = $cursor;
+ }
+
+ // we reached a premature end
+ if ($cursor === false) {
+ $cursor = $size;
+ $value_end = $cursor;
+ }
+
+ $value = substr($string, $value_begin, $value_end - $value_begin);
+ if ($value === false) $value = '';
+ $array[$key] = $this->parseData($value);
+ $cursor++;
+
+ } else {
+ // boolattr
+ if ($key !== '') {
+ $array[$key] = $key;
+ } else {
+ // purely theoretical
+ if ($e) $e->send(E_ERROR, 'Lexer: Missing attribute key');
+ }
+
+ }
+ }
+ return $array;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Proof-of-concept lexer that uses the PEAR package XML_HTMLSax3 to parse HTML.
+ *
+ * PEAR, not suprisingly, also has a SAX parser for HTML. I don't know
+ * very much about implementation, but it's fairly well written. However, that
+ * abstraction comes at a price: performance. You need to have it installed,
+ * and if the API changes, it might break our adapter. Not sure whether or not
+ * it's UTF-8 aware, but it has some entity parsing trouble (in all areas,
+ * text and attributes).
+ *
+ * Quite personally, I don't recommend using the PEAR class, and the defaults
+ * don't use it. The unit tests do perform the tests on the SAX parser too, but
+ * whatever it does for poorly formed HTML is up to it.
+ *
+ * @todo Generalize so that XML_HTMLSax is also supported.
+ *
+ * @warning Entity-resolution inside attributes is broken.
+ */
+
+class HTMLPurifier_Lexer_PEARSax3 extends HTMLPurifier_Lexer
+{
+
+ /**
+ * Internal accumulator array for SAX parsers.
+ */
+ protected $tokens = array();
+
+ public function tokenizeHTML($string, $config, $context) {
+
+ $this->tokens = array();
+
+ $string = $this->normalize($string, $config, $context);
+
+ $parser = new XML_HTMLSax3();
+ $parser->set_object($this);
+ $parser->set_element_handler('openHandler','closeHandler');
+ $parser->set_data_handler('dataHandler');
+ $parser->set_escape_handler('escapeHandler');
+
+ // doesn't seem to work correctly for attributes
+ $parser->set_option('XML_OPTION_ENTITIES_PARSED', 1);
+
+ $parser->parse($string);
+
+ return $this->tokens;
+
+ }
+
+ /**
+ * Open tag event handler, interface is defined by PEAR package.
+ */
+ public function openHandler(&$parser, $name, $attrs, $closed) {
+ // entities are not resolved in attrs
+ foreach ($attrs as $key => $attr) {
+ $attrs[$key] = $this->parseData($attr);
+ }
+ if ($closed) {
+ $this->tokens[] = new HTMLPurifier_Token_Empty($name, $attrs);
+ } else {
+ $this->tokens[] = new HTMLPurifier_Token_Start($name, $attrs);
+ }
+ return true;
+ }
+
+ /**
+ * Close tag event handler, interface is defined by PEAR package.
+ */
+ public function closeHandler(&$parser, $name) {
+ // HTMLSax3 seems to always send empty tags an extra close tag
+ // check and ignore if you see it:
+ // [TESTME] to make sure it doesn't overreach
+ if ($this->tokens[count($this->tokens)-1] instanceof HTMLPurifier_Token_Empty) {
+ return true;
+ }
+ $this->tokens[] = new HTMLPurifier_Token_End($name);
+ return true;
+ }
+
+ /**
+ * Data event handler, interface is defined by PEAR package.
+ */
+ public function dataHandler(&$parser, $data) {
+ $this->tokens[] = new HTMLPurifier_Token_Text($data);
+ return true;
+ }
+
+ /**
+ * Escaped text handler, interface is defined by PEAR package.
+ */
+ public function escapeHandler(&$parser, $data) {
+ if (strpos($data, '--') === 0) {
+ $this->tokens[] = new HTMLPurifier_Token_Comment($data);
+ }
+ // CDATA is handled elsewhere, but if it was handled here:
+ //if (strpos($data, '[CDATA[') === 0) {
+ // $this->tokens[] = new HTMLPurifier_Token_Text(
+ // substr($data, 7, strlen($data) - 9) );
+ //}
+ return true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Experimental HTML5-based parser using Jeroen van der Meer's PH5P library.
+ * Occupies space in the HTML5 pseudo-namespace, which may cause conflicts.
+ *
+ * @note
+ * Recent changes to PHP's DOM extension have resulted in some fatal
+ * error conditions with the original version of PH5P. Pending changes,
+ * this lexer will punt to DirectLex if DOM throughs an exception.
+ */
+
+class HTMLPurifier_Lexer_PH5P extends HTMLPurifier_Lexer_DOMLex {
+
+ public function tokenizeHTML($html, $config, $context) {
+ $new_html = $this->normalize($html, $config, $context);
+ $new_html = $this->wrapHTML($new_html, $config, $context);
+ try {
+ $parser = new HTML5($new_html);
+ $doc = $parser->save();
+ } catch (DOMException $e) {
+ // Uh oh, it failed. Punt to DirectLex.
+ $lexer = new HTMLPurifier_Lexer_DirectLex();
+ $context->register('PH5PError', $e); // save the error, so we can detect it
+ return $lexer->tokenizeHTML($html, $config, $context); // use original HTML
+ }
+ $tokens = array();
+ $this->tokenizeDOM(
+ $doc->getElementsByTagName('html')->item(0)-> // <html>
+ getElementsByTagName('body')->item(0)-> // <body>
+ getElementsByTagName('div')->item(0) // <div>
+ , $tokens);
+ return $tokens;
+ }
+
+}
+
+/*
+
+Copyright 2007 Jeroen van der Meer <http://jero.net/>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+class HTML5 {
+ private $data;
+ private $char;
+ private $EOF;
+ private $state;
+ private $tree;
+ private $token;
+ private $content_model;
+ private $escape = false;
+ private $entities = array('AElig;','AElig','AMP;','AMP','Aacute;','Aacute',
+ 'Acirc;','Acirc','Agrave;','Agrave','Alpha;','Aring;','Aring','Atilde;',
+ 'Atilde','Auml;','Auml','Beta;','COPY;','COPY','Ccedil;','Ccedil','Chi;',
+ 'Dagger;','Delta;','ETH;','ETH','Eacute;','Eacute','Ecirc;','Ecirc','Egrave;',
+ 'Egrave','Epsilon;','Eta;','Euml;','Euml','GT;','GT','Gamma;','Iacute;',
+ 'Iacute','Icirc;','Icirc','Igrave;','Igrave','Iota;','Iuml;','Iuml','Kappa;',
+ 'LT;','LT','Lambda;','Mu;','Ntilde;','Ntilde','Nu;','OElig;','Oacute;',
+ 'Oacute','Ocirc;','Ocirc','Ograve;','Ograve','Omega;','Omicron;','Oslash;',
+ 'Oslash','Otilde;','Otilde','Ouml;','Ouml','Phi;','Pi;','Prime;','Psi;',
+ 'QUOT;','QUOT','REG;','REG','Rho;','Scaron;','Sigma;','THORN;','THORN',
+ 'TRADE;','Tau;','Theta;','Uacute;','Uacute','Ucirc;','Ucirc','Ugrave;',
+ 'Ugrave','Upsilon;','Uuml;','Uuml','Xi;','Yacute;','Yacute','Yuml;','Zeta;',
+ 'aacute;','aacute','acirc;','acirc','acute;','acute','aelig;','aelig',
+ 'agrave;','agrave','alefsym;','alpha;','amp;','amp','and;','ang;','apos;',
+ 'aring;','aring','asymp;','atilde;','atilde','auml;','auml','bdquo;','beta;',
+ 'brvbar;','brvbar','bull;','cap;','ccedil;','ccedil','cedil;','cedil',
+ 'cent;','cent','chi;','circ;','clubs;','cong;','copy;','copy','crarr;',
+ 'cup;','curren;','curren','dArr;','dagger;','darr;','deg;','deg','delta;',
+ 'diams;','divide;','divide','eacute;','eacute','ecirc;','ecirc','egrave;',
+ 'egrave','empty;','emsp;','ensp;','epsilon;','equiv;','eta;','eth;','eth',
+ 'euml;','euml','euro;','exist;','fnof;','forall;','frac12;','frac12',
+ 'frac14;','frac14','frac34;','frac34','frasl;','gamma;','ge;','gt;','gt',
+ 'hArr;','harr;','hearts;','hellip;','iacute;','iacute','icirc;','icirc',
+ 'iexcl;','iexcl','igrave;','igrave','image;','infin;','int;','iota;',
+ 'iquest;','iquest','isin;','iuml;','iuml','kappa;','lArr;','lambda;','lang;',
+ 'laquo;','laquo','larr;','lceil;','ldquo;','le;','lfloor;','lowast;','loz;',
+ 'lrm;','lsaquo;','lsquo;','lt;','lt','macr;','macr','mdash;','micro;','micro',
+ 'middot;','middot','minus;','mu;','nabla;','nbsp;','nbsp','ndash;','ne;',
+ 'ni;','not;','not','notin;','nsub;','ntilde;','ntilde','nu;','oacute;',
+ 'oacute','ocirc;','ocirc','oelig;','ograve;','ograve','oline;','omega;',
+ 'omicron;','oplus;','or;','ordf;','ordf','ordm;','ordm','oslash;','oslash',
+ 'otilde;','otilde','otimes;','ouml;','ouml','para;','para','part;','permil;',
+ 'perp;','phi;','pi;','piv;','plusmn;','plusmn','pound;','pound','prime;',
+ 'prod;','prop;','psi;','quot;','quot','rArr;','radic;','rang;','raquo;',
+ 'raquo','rarr;','rceil;','rdquo;','real;','reg;','reg','rfloor;','rho;',
+ 'rlm;','rsaquo;','rsquo;','sbquo;','scaron;','sdot;','sect;','sect','shy;',
+ 'shy','sigma;','sigmaf;','sim;','spades;','sub;','sube;','sum;','sup1;',
+ 'sup1','sup2;','sup2','sup3;','sup3','sup;','supe;','szlig;','szlig','tau;',
+ 'there4;','theta;','thetasym;','thinsp;','thorn;','thorn','tilde;','times;',
+ 'times','trade;','uArr;','uacute;','uacute','uarr;','ucirc;','ucirc',
+ 'ugrave;','ugrave','uml;','uml','upsih;','upsilon;','uuml;','uuml','weierp;',
+ 'xi;','yacute;','yacute','yen;','yen','yuml;','yuml','zeta;','zwj;','zwnj;');
+
+ const PCDATA = 0;
+ const RCDATA = 1;
+ const CDATA = 2;
+ const PLAINTEXT = 3;
+
+ const DOCTYPE = 0;
+ const STARTTAG = 1;
+ const ENDTAG = 2;
+ const COMMENT = 3;
+ const CHARACTR = 4;
+ const EOF = 5;
+
+ public function __construct($data) {
+ $data = str_replace("\r\n", "\n", $data);
+ $data = str_replace("\r", null, $data);
+
+ $this->data = $data;
+ $this->char = -1;
+ $this->EOF = strlen($data);
+ $this->tree = new HTML5TreeConstructer;
+ $this->content_model = self::PCDATA;
+
+ $this->state = 'data';
+
+ while($this->state !== null) {
+ $this->{$this->state.'State'}();
+ }
+ }
+
+ public function save() {
+ return $this->tree->save();
+ }
+
+ private function char() {
+ return ($this->char < $this->EOF)
+ ? $this->data[$this->char]
+ : false;
+ }
+
+ private function character($s, $l = 0) {
+ if($s + $l < $this->EOF) {
+ if($l === 0) {
+ return $this->data[$s];
+ } else {
+ return substr($this->data, $s, $l);
+ }
+ }
+ }
+
+ private function characters($char_class, $start) {
+ return preg_replace('#^(['.$char_class.']+).*#s', '\\1', substr($this->data, $start));
+ }
+
+ private function dataState() {
+ // Consume the next input character
+ $this->char++;
+ $char = $this->char();
+
+ if($char === '&' && ($this->content_model === self::PCDATA || $this->content_model === self::RCDATA)) {
+ /* U+0026 AMPERSAND (&)
+ When the content model flag is set to one of the PCDATA or RCDATA
+ states: switch to the entity data state. Otherwise: treat it as per
+ the "anything else" entry below. */
+ $this->state = 'entityData';
+
+ } elseif($char === '-') {
+ /* If the content model flag is set to either the RCDATA state or
+ the CDATA state, and the escape flag is false, and there are at
+ least three characters before this one in the input stream, and the
+ last four characters in the input stream, including this one, are
+ U+003C LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
+ and U+002D HYPHEN-MINUS ("<!--"), then set the escape flag to true. */
+ if(($this->content_model === self::RCDATA || $this->content_model ===
+ self::CDATA) && $this->escape === false &&
+ $this->char >= 3 && $this->character($this->char - 4, 4) === '<!--') {
+ $this->escape = true;
+ }
+
+ /* In any case, emit the input character as a character token. Stay
+ in the data state. */
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => $char
+ ));
+
+ /* U+003C LESS-THAN SIGN (<) */
+ } elseif($char === '<' && ($this->content_model === self::PCDATA ||
+ (($this->content_model === self::RCDATA ||
+ $this->content_model === self::CDATA) && $this->escape === false))) {
+ /* When the content model flag is set to the PCDATA state: switch
+ to the tag open state.
+
+ When the content model flag is set to either the RCDATA state or
+ the CDATA state and the escape flag is false: switch to the tag
+ open state.
+
+ Otherwise: treat it as per the "anything else" entry below. */
+ $this->state = 'tagOpen';
+
+ /* U+003E GREATER-THAN SIGN (>) */
+ } elseif($char === '>') {
+ /* If the content model flag is set to either the RCDATA state or
+ the CDATA state, and the escape flag is true, and the last three
+ characters in the input stream including this one are U+002D
+ HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN SIGN ("-->"),
+ set the escape flag to false. */
+ if(($this->content_model === self::RCDATA ||
+ $this->content_model === self::CDATA) && $this->escape === true &&
+ $this->character($this->char, 3) === '-->') {
+ $this->escape = false;
+ }
+
+ /* In any case, emit the input character as a character token.
+ Stay in the data state. */
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => $char
+ ));
+
+ } elseif($this->char === $this->EOF) {
+ /* EOF
+ Emit an end-of-file token. */
+ $this->EOF();
+
+ } elseif($this->content_model === self::PLAINTEXT) {
+ /* When the content model flag is set to the PLAINTEXT state
+ THIS DIFFERS GREATLY FROM THE SPEC: Get the remaining characters of
+ the text and emit it as a character token. */
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => substr($this->data, $this->char)
+ ));
+
+ $this->EOF();
+
+ } else {
+ /* Anything else
+ THIS DIFFERS GREATLY FROM THE SPEC: Get as many character that
+ otherwise would also be treated as a character token and emit it
+ as a single character token. Stay in the data state. */
+ $len = strcspn($this->data, '<&', $this->char);
+ $char = substr($this->data, $this->char, $len);
+ $this->char += $len - 1;
+
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => $char
+ ));
+
+ $this->state = 'data';
+ }
+ }
+
+ private function entityDataState() {
+ // Attempt to consume an entity.
+ $entity = $this->entity();
+
+ // If nothing is returned, emit a U+0026 AMPERSAND character token.
+ // Otherwise, emit the character token that was returned.
+ $char = (!$entity) ? '&' : $entity;
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => $char
+ ));
+
+ // Finally, switch to the data state.
+ $this->state = 'data';
+ }
+
+ private function tagOpenState() {
+ switch($this->content_model) {
+ case self::RCDATA:
+ case self::CDATA:
+ /* If the next input character is a U+002F SOLIDUS (/) character,
+ consume it and switch to the close tag open state. If the next
+ input character is not a U+002F SOLIDUS (/) character, emit a
+ U+003C LESS-THAN SIGN character token and switch to the data
+ state to process the next input character. */
+ if($this->character($this->char + 1) === '/') {
+ $this->char++;
+ $this->state = 'closeTagOpen';
+
+ } else {
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => '<'
+ ));
+
+ $this->state = 'data';
+ }
+ break;
+
+ case self::PCDATA:
+ // If the content model flag is set to the PCDATA state
+ // Consume the next input character:
+ $this->char++;
+ $char = $this->char();
+
+ if($char === '!') {
+ /* U+0021 EXCLAMATION MARK (!)
+ Switch to the markup declaration open state. */
+ $this->state = 'markupDeclarationOpen';
+
+ } elseif($char === '/') {
+ /* U+002F SOLIDUS (/)
+ Switch to the close tag open state. */
+ $this->state = 'closeTagOpen';
+
+ } elseif(preg_match('/^[A-Za-z]$/', $char)) {
+ /* U+0041 LATIN LETTER A through to U+005A LATIN LETTER Z
+ Create a new start tag token, set its tag name to the lowercase
+ version of the input character (add 0x0020 to the character's code
+ point), then switch to the tag name state. (Don't emit the token
+ yet; further details will be filled in before it is emitted.) */
+ $this->token = array(
+ 'name' => strtolower($char),
+ 'type' => self::STARTTAG,
+ 'attr' => array()
+ );
+
+ $this->state = 'tagName';
+
+ } elseif($char === '>') {
+ /* U+003E GREATER-THAN SIGN (>)
+ Parse error. Emit a U+003C LESS-THAN SIGN character token and a
+ U+003E GREATER-THAN SIGN character token. Switch to the data state. */
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => '<>'
+ ));
+
+ $this->state = 'data';
+
+ } elseif($char === '?') {
+ /* U+003F QUESTION MARK (?)
+ Parse error. Switch to the bogus comment state. */
+ $this->state = 'bogusComment';
+
+ } else {
+ /* Anything else
+ Parse error. Emit a U+003C LESS-THAN SIGN character token and
+ reconsume the current input character in the data state. */
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => '<'
+ ));
+
+ $this->char--;
+ $this->state = 'data';
+ }
+ break;
+ }
+ }
+
+ private function closeTagOpenState() {
+ $next_node = strtolower($this->characters('A-Za-z', $this->char + 1));
+ $the_same = count($this->tree->stack) > 0 && $next_node === end($this->tree->stack)->nodeName;
+
+ if(($this->content_model === self::RCDATA || $this->content_model === self::CDATA) &&
+ (!$the_same || ($the_same && (!preg_match('/[\t\n\x0b\x0c >\/]/',
+ $this->character($this->char + 1 + strlen($next_node))) || $this->EOF === $this->char)))) {
+ /* If the content model flag is set to the RCDATA or CDATA states then
+ examine the next few characters. If they do not match the tag name of
+ the last start tag token emitted (case insensitively), or if they do but
+ they are not immediately followed by one of the following characters:
+ * U+0009 CHARACTER TABULATION
+ * U+000A LINE FEED (LF)
+ * U+000B LINE TABULATION
+ * U+000C FORM FEED (FF)
+ * U+0020 SPACE
+ * U+003E GREATER-THAN SIGN (>)
+ * U+002F SOLIDUS (/)
+ * EOF
+ ...then there is a parse error. Emit a U+003C LESS-THAN SIGN character
+ token, a U+002F SOLIDUS character token, and switch to the data state
+ to process the next input character. */
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => '</'
+ ));
+
+ $this->state = 'data';
+
+ } else {
+ /* Otherwise, if the content model flag is set to the PCDATA state,
+ or if the next few characters do match that tag name, consume the
+ next input character: */
+ $this->char++;
+ $char = $this->char();
+
+ if(preg_match('/^[A-Za-z]$/', $char)) {
+ /* U+0041 LATIN LETTER A through to U+005A LATIN LETTER Z
+ Create a new end tag token, set its tag name to the lowercase version
+ of the input character (add 0x0020 to the character's code point), then
+ switch to the tag name state. (Don't emit the token yet; further details
+ will be filled in before it is emitted.) */
+ $this->token = array(
+ 'name' => strtolower($char),
+ 'type' => self::ENDTAG
+ );
+
+ $this->state = 'tagName';
+
+ } elseif($char === '>') {
+ /* U+003E GREATER-THAN SIGN (>)
+ Parse error. Switch to the data state. */
+ $this->state = 'data';
+
+ } elseif($this->char === $this->EOF) {
+ /* EOF
+ Parse error. Emit a U+003C LESS-THAN SIGN character token and a U+002F
+ SOLIDUS character token. Reconsume the EOF character in the data state. */
+ $this->emitToken(array(
+ 'type' => self::CHARACTR,
+ 'data' => '</'
+ ));
+
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ /* Parse error. Switch to the bogus comment state. */
+ $this->state = 'bogusComment';
+ }
+ }
+ }
+
+ private function tagNameState() {
+ // Consume the next input character:
+ $this->char++;
+ $char = $this->character($this->char);
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ /* U+0009 CHARACTER TABULATION
+ U+000A LINE FEED (LF)
+ U+000B LINE TABULATION
+ U+000C FORM FEED (FF)
+ U+0020 SPACE
+ Switch to the before attribute name state. */
+ $this->state = 'beforeAttributeName';
+
+ } elseif($char === '>') {
+ /* U+003E GREATER-THAN SIGN (>)
+ Emit the current tag token. Switch to the data state. */
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } elseif($this->char === $this->EOF) {
+ /* EOF
+ Parse error. Emit the current tag token. Reconsume the EOF
+ character in the data state. */
+ $this->emitToken($this->token);
+
+ $this->char--;
+ $this->state = 'data';
+
+ } elseif($char === '/') {
+ /* U+002F SOLIDUS (/)
+ Parse error unless this is a permitted slash. Switch to the before
+ attribute name state. */
+ $this->state = 'beforeAttributeName';
+
+ } else {
+ /* Anything else
+ Append the current input character to the current tag token's tag name.
+ Stay in the tag name state. */
+ $this->token['name'] .= strtolower($char);
+ $this->state = 'tagName';
+ }
+ }
+
+ private function beforeAttributeNameState() {
+ // Consume the next input character:
+ $this->char++;
+ $char = $this->character($this->char);
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ /* U+0009 CHARACTER TABULATION
+ U+000A LINE FEED (LF)
+ U+000B LINE TABULATION
+ U+000C FORM FEED (FF)
+ U+0020 SPACE
+ Stay in the before attribute name state. */
+ $this->state = 'beforeAttributeName';
+
+ } elseif($char === '>') {
+ /* U+003E GREATER-THAN SIGN (>)
+ Emit the current tag token. Switch to the data state. */
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } elseif($char === '/') {
+ /* U+002F SOLIDUS (/)
+ Parse error unless this is a permitted slash. Stay in the before
+ attribute name state. */
+ $this->state = 'beforeAttributeName';
+
+ } elseif($this->char === $this->EOF) {
+ /* EOF
+ Parse error. Emit the current tag token. Reconsume the EOF
+ character in the data state. */
+ $this->emitToken($this->token);
+
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ /* Anything else
+ Start a new attribute in the current tag token. Set that attribute's
+ name to the current input character, and its value to the empty string.
+ Switch to the attribute name state. */
+ $this->token['attr'][] = array(
+ 'name' => strtolower($char),
+ 'value' => null
+ );
+
+ $this->state = 'attributeName';
+ }
+ }
+
+ private function attributeNameState() {
+ // Consume the next input character:
+ $this->char++;
+ $char = $this->character($this->char);
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ /* U+0009 CHARACTER TABULATION
+ U+000A LINE FEED (LF)
+ U+000B LINE TABULATION
+ U+000C FORM FEED (FF)
+ U+0020 SPACE
+ Stay in the before attribute name state. */
+ $this->state = 'afterAttributeName';
+
+ } elseif($char === '=') {
+ /* U+003D EQUALS SIGN (=)
+ Switch to the before attribute value state. */
+ $this->state = 'beforeAttributeValue';
+
+ } elseif($char === '>') {
+ /* U+003E GREATER-THAN SIGN (>)
+ Emit the current tag token. Switch to the data state. */
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } elseif($char === '/' && $this->character($this->char + 1) !== '>') {
+ /* U+002F SOLIDUS (/)
+ Parse error unless this is a permitted slash. Switch to the before
+ attribute name state. */
+ $this->state = 'beforeAttributeName';
+
+ } elseif($this->char === $this->EOF) {
+ /* EOF
+ Parse error. Emit the current tag token. Reconsume the EOF
+ character in the data state. */
+ $this->emitToken($this->token);
+
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ /* Anything else
+ Append the current input character to the current attribute's name.
+ Stay in the attribute name state. */
+ $last = count($this->token['attr']) - 1;
+ $this->token['attr'][$last]['name'] .= strtolower($char);
+
+ $this->state = 'attributeName';
+ }
+ }
+
+ private function afterAttributeNameState() {
+ // Consume the next input character:
+ $this->char++;
+ $char = $this->character($this->char);
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ /* U+0009 CHARACTER TABULATION
+ U+000A LINE FEED (LF)
+ U+000B LINE TABULATION
+ U+000C FORM FEED (FF)
+ U+0020 SPACE
+ Stay in the after attribute name state. */
+ $this->state = 'afterAttributeName';
+
+ } elseif($char === '=') {
+ /* U+003D EQUALS SIGN (=)
+ Switch to the before attribute value state. */
+ $this->state = 'beforeAttributeValue';
+
+ } elseif($char === '>') {
+ /* U+003E GREATER-THAN SIGN (>)
+ Emit the current tag token. Switch to the data state. */
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } elseif($char === '/' && $this->character($this->char + 1) !== '>') {
+ /* U+002F SOLIDUS (/)
+ Parse error unless this is a permitted slash. Switch to the
+ before attribute name state. */
+ $this->state = 'beforeAttributeName';
+
+ } elseif($this->char === $this->EOF) {
+ /* EOF
+ Parse error. Emit the current tag token. Reconsume the EOF
+ character in the data state. */
+ $this->emitToken($this->token);
+
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ /* Anything else
+ Start a new attribute in the current tag token. Set that attribute's
+ name to the current input character, and its value to the empty string.
+ Switch to the attribute name state. */
+ $this->token['attr'][] = array(
+ 'name' => strtolower($char),
+ 'value' => null
+ );
+
+ $this->state = 'attributeName';
+ }
+ }
+
+ private function beforeAttributeValueState() {
+ // Consume the next input character:
+ $this->char++;
+ $char = $this->character($this->char);
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ /* U+0009 CHARACTER TABULATION
+ U+000A LINE FEED (LF)
+ U+000B LINE TABULATION
+ U+000C FORM FEED (FF)
+ U+0020 SPACE
+ Stay in the before attribute value state. */
+ $this->state = 'beforeAttributeValue';
+
+ } elseif($char === '"') {
+ /* U+0022 QUOTATION MARK (")
+ Switch to the attribute value (double-quoted) state. */
+ $this->state = 'attributeValueDoubleQuoted';
+
+ } elseif($char === '&') {
+ /* U+0026 AMPERSAND (&)
+ Switch to the attribute value (unquoted) state and reconsume
+ this input character. */
+ $this->char--;
+ $this->state = 'attributeValueUnquoted';
+
+ } elseif($char === '\'') {
+ /* U+0027 APOSTROPHE (')
+ Switch to the attribute value (single-quoted) state. */
+ $this->state = 'attributeValueSingleQuoted';
+
+ } elseif($char === '>') {
+ /* U+003E GREATER-THAN SIGN (>)
+ Emit the current tag token. Switch to the data state. */
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } else {
+ /* Anything else
+ Append the current input character to the current attribute's value.
+ Switch to the attribute value (unquoted) state. */
+ $last = count($this->token['attr']) - 1;
+ $this->token['attr'][$last]['value'] .= $char;
+
+ $this->state = 'attributeValueUnquoted';
+ }
+ }
+
+ private function attributeValueDoubleQuotedState() {
+ // Consume the next input character:
+ $this->char++;
+ $char = $this->character($this->char);
+
+ if($char === '"') {
+ /* U+0022 QUOTATION MARK (")
+ Switch to the before attribute name state. */
+ $this->state = 'beforeAttributeName';
+
+ } elseif($char === '&') {
+ /* U+0026 AMPERSAND (&)
+ Switch to the entity in attribute value state. */
+ $this->entityInAttributeValueState('double');
+
+ } elseif($this->char === $this->EOF) {
+ /* EOF
+ Parse error. Emit the current tag token. Reconsume the character
+ in the data state. */
+ $this->emitToken($this->token);
+
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ /* Anything else
+ Append the current input character to the current attribute's value.
+ Stay in the attribute value (double-quoted) state. */
+ $last = count($this->token['attr']) - 1;
+ $this->token['attr'][$last]['value'] .= $char;
+
+ $this->state = 'attributeValueDoubleQuoted';
+ }
+ }
+
+ private function attributeValueSingleQuotedState() {
+ // Consume the next input character:
+ $this->char++;
+ $char = $this->character($this->char);
+
+ if($char === '\'') {
+ /* U+0022 QUOTATION MARK (')
+ Switch to the before attribute name state. */
+ $this->state = 'beforeAttributeName';
+
+ } elseif($char === '&') {
+ /* U+0026 AMPERSAND (&)
+ Switch to the entity in attribute value state. */
+ $this->entityInAttributeValueState('single');
+
+ } elseif($this->char === $this->EOF) {
+ /* EOF
+ Parse error. Emit the current tag token. Reconsume the character
+ in the data state. */
+ $this->emitToken($this->token);
+
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ /* Anything else
+ Append the current input character to the current attribute's value.
+ Stay in the attribute value (single-quoted) state. */
+ $last = count($this->token['attr']) - 1;
+ $this->token['attr'][$last]['value'] .= $char;
+
+ $this->state = 'attributeValueSingleQuoted';
+ }
+ }
+
+ private function attributeValueUnquotedState() {
+ // Consume the next input character:
+ $this->char++;
+ $char = $this->character($this->char);
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ /* U+0009 CHARACTER TABULATION
+ U+000A LINE FEED (LF)
+ U+000B LINE TABULATION
+ U+000C FORM FEED (FF)
+ U+0020 SPACE
+ Switch to the before attribute name state. */
+ $this->state = 'beforeAttributeName';
+
+ } elseif($char === '&') {
+ /* U+0026 AMPERSAND (&)
+ Switch to the entity in attribute value state. */
+ $this->entityInAttributeValueState();
+
+ } elseif($char === '>') {
+ /* U+003E GREATER-THAN SIGN (>)
+ Emit the current tag token. Switch to the data state. */
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } else {
+ /* Anything else
+ Append the current input character to the current attribute's value.
+ Stay in the attribute value (unquoted) state. */
+ $last = count($this->token['attr']) - 1;
+ $this->token['attr'][$last]['value'] .= $char;
+
+ $this->state = 'attributeValueUnquoted';
+ }
+ }
+
+ private function entityInAttributeValueState() {
+ // Attempt to consume an entity.
+ $entity = $this->entity();
+
+ // If nothing is returned, append a U+0026 AMPERSAND character to the
+ // current attribute's value. Otherwise, emit the character token that
+ // was returned.
+ $char = (!$entity)
+ ? '&'
+ : $entity;
+
+ $last = count($this->token['attr']) - 1;
+ $this->token['attr'][$last]['value'] .= $char;
+ }
+
+ private function bogusCommentState() {
+ /* Consume every character up to the first U+003E GREATER-THAN SIGN
+ character (>) or the end of the file (EOF), whichever comes first. Emit
+ a comment token whose data is the concatenation of all the characters
+ starting from and including the character that caused the state machine
+ to switch into the bogus comment state, up to and including the last
+ consumed character before the U+003E character, if any, or up to the
+ end of the file otherwise. (If the comment was started by the end of
+ the file (EOF), the token is empty.) */
+ $data = $this->characters('^>', $this->char);
+ $this->emitToken(array(
+ 'data' => $data,
+ 'type' => self::COMMENT
+ ));
+
+ $this->char += strlen($data);
+
+ /* Switch to the data state. */
+ $this->state = 'data';
+
+ /* If the end of the file was reached, reconsume the EOF character. */
+ if($this->char === $this->EOF) {
+ $this->char = $this->EOF - 1;
+ }
+ }
+
+ private function markupDeclarationOpenState() {
+ /* If the next two characters are both U+002D HYPHEN-MINUS (-)
+ characters, consume those two characters, create a comment token whose
+ data is the empty string, and switch to the comment state. */
+ if($this->character($this->char + 1, 2) === '--') {
+ $this->char += 2;
+ $this->state = 'comment';
+ $this->token = array(
+ 'data' => null,
+ 'type' => self::COMMENT
+ );
+
+ /* Otherwise if the next seven chacacters are a case-insensitive match
+ for the word "DOCTYPE", then consume those characters and switch to the
+ DOCTYPE state. */
+ } elseif(strtolower($this->character($this->char + 1, 7)) === 'doctype') {
+ $this->char += 7;
+ $this->state = 'doctype';
+
+ /* Otherwise, is is a parse error. Switch to the bogus comment state.
+ The next character that is consumed, if any, is the first character
+ that will be in the comment. */
+ } else {
+ $this->char++;
+ $this->state = 'bogusComment';
+ }
+ }
+
+ private function commentState() {
+ /* Consume the next input character: */
+ $this->char++;
+ $char = $this->char();
+
+ /* U+002D HYPHEN-MINUS (-) */
+ if($char === '-') {
+ /* Switch to the comment dash state */
+ $this->state = 'commentDash';
+
+ /* EOF */
+ } elseif($this->char === $this->EOF) {
+ /* Parse error. Emit the comment token. Reconsume the EOF character
+ in the data state. */
+ $this->emitToken($this->token);
+ $this->char--;
+ $this->state = 'data';
+
+ /* Anything else */
+ } else {
+ /* Append the input character to the comment token's data. Stay in
+ the comment state. */
+ $this->token['data'] .= $char;
+ }
+ }
+
+ private function commentDashState() {
+ /* Consume the next input character: */
+ $this->char++;
+ $char = $this->char();
+
+ /* U+002D HYPHEN-MINUS (-) */
+ if($char === '-') {
+ /* Switch to the comment end state */
+ $this->state = 'commentEnd';
+
+ /* EOF */
+ } elseif($this->char === $this->EOF) {
+ /* Parse error. Emit the comment token. Reconsume the EOF character
+ in the data state. */
+ $this->emitToken($this->token);
+ $this->char--;
+ $this->state = 'data';
+
+ /* Anything else */
+ } else {
+ /* Append a U+002D HYPHEN-MINUS (-) character and the input
+ character to the comment token's data. Switch to the comment state. */
+ $this->token['data'] .= '-'.$char;
+ $this->state = 'comment';
+ }
+ }
+
+ private function commentEndState() {
+ /* Consume the next input character: */
+ $this->char++;
+ $char = $this->char();
+
+ if($char === '>') {
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } elseif($char === '-') {
+ $this->token['data'] .= '-';
+
+ } elseif($this->char === $this->EOF) {
+ $this->emitToken($this->token);
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ $this->token['data'] .= '--'.$char;
+ $this->state = 'comment';
+ }
+ }
+
+ private function doctypeState() {
+ /* Consume the next input character: */
+ $this->char++;
+ $char = $this->char();
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ $this->state = 'beforeDoctypeName';
+
+ } else {
+ $this->char--;
+ $this->state = 'beforeDoctypeName';
+ }
+ }
+
+ private function beforeDoctypeNameState() {
+ /* Consume the next input character: */
+ $this->char++;
+ $char = $this->char();
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ // Stay in the before DOCTYPE name state.
+
+ } elseif(preg_match('/^[a-z]$/', $char)) {
+ $this->token = array(
+ 'name' => strtoupper($char),
+ 'type' => self::DOCTYPE,
+ 'error' => true
+ );
+
+ $this->state = 'doctypeName';
+
+ } elseif($char === '>') {
+ $this->emitToken(array(
+ 'name' => null,
+ 'type' => self::DOCTYPE,
+ 'error' => true
+ ));
+
+ $this->state = 'data';
+
+ } elseif($this->char === $this->EOF) {
+ $this->emitToken(array(
+ 'name' => null,
+ 'type' => self::DOCTYPE,
+ 'error' => true
+ ));
+
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ $this->token = array(
+ 'name' => $char,
+ 'type' => self::DOCTYPE,
+ 'error' => true
+ );
+
+ $this->state = 'doctypeName';
+ }
+ }
+
+ private function doctypeNameState() {
+ /* Consume the next input character: */
+ $this->char++;
+ $char = $this->char();
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ $this->state = 'AfterDoctypeName';
+
+ } elseif($char === '>') {
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } elseif(preg_match('/^[a-z]$/', $char)) {
+ $this->token['name'] .= strtoupper($char);
+
+ } elseif($this->char === $this->EOF) {
+ $this->emitToken($this->token);
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ $this->token['name'] .= $char;
+ }
+
+ $this->token['error'] = ($this->token['name'] === 'HTML')
+ ? false
+ : true;
+ }
+
+ private function afterDoctypeNameState() {
+ /* Consume the next input character: */
+ $this->char++;
+ $char = $this->char();
+
+ if(preg_match('/^[\t\n\x0b\x0c ]$/', $char)) {
+ // Stay in the DOCTYPE name state.
+
+ } elseif($char === '>') {
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } elseif($this->char === $this->EOF) {
+ $this->emitToken($this->token);
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ $this->token['error'] = true;
+ $this->state = 'bogusDoctype';
+ }
+ }
+
+ private function bogusDoctypeState() {
+ /* Consume the next input character: */
+ $this->char++;
+ $char = $this->char();
+
+ if($char === '>') {
+ $this->emitToken($this->token);
+ $this->state = 'data';
+
+ } elseif($this->char === $this->EOF) {
+ $this->emitToken($this->token);
+ $this->char--;
+ $this->state = 'data';
+
+ } else {
+ // Stay in the bogus DOCTYPE state.
+ }
+ }
+
+ private function entity() {
+ $start = $this->char;
+
+ // This section defines how to consume an entity. This definition is
+ // used when parsing entities in text and in attributes.
+
+ // The behaviour depends on the identity of the next character (the
+ // one immediately after the U+0026 AMPERSAND character):
+
+ switch($this->character($this->char + 1)) {
+ // U+0023 NUMBER SIGN (#)
+ case '#':
+
+ // The behaviour further depends on the character after the
+ // U+0023 NUMBER SIGN:
+ switch($this->character($this->char + 1)) {
+ // U+0078 LATIN SMALL LETTER X
+ // U+0058 LATIN CAPITAL LETTER X
+ case 'x':
+ case 'X':
+ // Follow the steps below, but using the range of
+ // characters U+0030 DIGIT ZERO through to U+0039 DIGIT
+ // NINE, U+0061 LATIN SMALL LETTER A through to U+0066
+ // LATIN SMALL LETTER F, and U+0041 LATIN CAPITAL LETTER
+ // A, through to U+0046 LATIN CAPITAL LETTER F (in other
+ // words, 0-9, A-F, a-f).
+ $char = 1;
+ $char_class = '0-9A-Fa-f';
+ break;
+
+ // Anything else
+ default:
+ // Follow the steps below, but using the range of
+ // characters U+0030 DIGIT ZERO through to U+0039 DIGIT
+ // NINE (i.e. just 0-9).
+ $char = 0;
+ $char_class = '0-9';
+ break;
+ }
+
+ // Consume as many characters as match the range of characters
+ // given above.
+ $this->char++;
+ $e_name = $this->characters($char_class, $this->char + $char + 1);
+ $entity = $this->character($start, $this->char);
+ $cond = strlen($e_name) > 0;
+
+ // The rest of the parsing happens bellow.
+ break;
+
+ // Anything else
+ default:
+ // Consume the maximum number of characters possible, with the
+ // consumed characters case-sensitively matching one of the
+ // identifiers in the first column of the entities table.
+ $e_name = $this->characters('0-9A-Za-z;', $this->char + 1);
+ $len = strlen($e_name);
+
+ for($c = 1; $c <= $len; $c++) {
+ $id = substr($e_name, 0, $c);
+ $this->char++;
+
+ if(in_array($id, $this->entities)) {
+ if ($e_name[$c-1] !== ';') {
+ if ($c < $len && $e_name[$c] == ';') {
+ $this->char++; // consume extra semicolon
+ }
+ }
+ $entity = $id;
+ break;
+ }
+ }
+
+ $cond = isset($entity);
+ // The rest of the parsing happens bellow.
+ break;
+ }
+
+ if(!$cond) {
+ // If no match can be made, then this is a parse error. No
+ // characters are consumed, and nothing is returned.
+ $this->char = $start;
+ return false;
+ }
+
+ // Return a character token for the character corresponding to the
+ // entity name (as given by the second column of the entities table).
+ return html_entity_decode('&'.$entity.';', ENT_QUOTES, 'UTF-8');
+ }
+
+ private function emitToken($token) {
+ $emit = $this->tree->emitToken($token);
+
+ if(is_int($emit)) {
+ $this->content_model = $emit;
+
+ } elseif($token['type'] === self::ENDTAG) {
+ $this->content_model = self::PCDATA;
+ }
+ }
+
+ private function EOF() {
+ $this->state = null;
+ $this->tree->emitToken(array(
+ 'type' => self::EOF
+ ));
+ }
+}
+
+class HTML5TreeConstructer {
+ public $stack = array();
+
+ private $phase;
+ private $mode;
+ private $dom;
+ private $foster_parent = null;
+ private $a_formatting = array();
+
+ private $head_pointer = null;
+ private $form_pointer = null;
+
+ private $scoping = array('button','caption','html','marquee','object','table','td','th');
+ private $formatting = array('a','b','big','em','font','i','nobr','s','small','strike','strong','tt','u');
+ private $special = array('address','area','base','basefont','bgsound',
+ 'blockquote','body','br','center','col','colgroup','dd','dir','div','dl',
+ 'dt','embed','fieldset','form','frame','frameset','h1','h2','h3','h4','h5',
+ 'h6','head','hr','iframe','image','img','input','isindex','li','link',
+ 'listing','menu','meta','noembed','noframes','noscript','ol','optgroup',
+ 'option','p','param','plaintext','pre','script','select','spacer','style',
+ 'tbody','textarea','tfoot','thead','title','tr','ul','wbr');
+
+ // The different phases.
+ const INIT_PHASE = 0;
+ const ROOT_PHASE = 1;
+ const MAIN_PHASE = 2;
+ const END_PHASE = 3;
+
+ // The different insertion modes for the main phase.
+ const BEFOR_HEAD = 0;
+ const IN_HEAD = 1;
+ const AFTER_HEAD = 2;
+ const IN_BODY = 3;
+ const IN_TABLE = 4;
+ const IN_CAPTION = 5;
+ const IN_CGROUP = 6;
+ const IN_TBODY = 7;
+ const IN_ROW = 8;
+ const IN_CELL = 9;
+ const IN_SELECT = 10;
+ const AFTER_BODY = 11;
+ const IN_FRAME = 12;
+ const AFTR_FRAME = 13;
+
+ // The different types of elements.
+ const SPECIAL = 0;
+ const SCOPING = 1;
+ const FORMATTING = 2;
+ const PHRASING = 3;
+
+ const MARKER = 0;
+
+ public function __construct() {
+ $this->phase = self::INIT_PHASE;
+ $this->mode = self::BEFOR_HEAD;
+ $this->dom = new DOMDocument;
+
+ $this->dom->encoding = 'UTF-8';
+ $this->dom->preserveWhiteSpace = true;
+ $this->dom->substituteEntities = true;
+ $this->dom->strictErrorChecking = false;
+ }
+
+ // Process tag tokens
+ public function emitToken($token) {
+ switch($this->phase) {
+ case self::INIT_PHASE: return $this->initPhase($token); break;
+ case self::ROOT_PHASE: return $this->rootElementPhase($token); break;
+ case self::MAIN_PHASE: return $this->mainPhase($token); break;
+ case self::END_PHASE : return $this->trailingEndPhase($token); break;
+ }
+ }
+
+ private function initPhase($token) {
+ /* Initially, the tree construction stage must handle each token
+ emitted from the tokenisation stage as follows: */
+
+ /* A DOCTYPE token that is marked as being in error
+ A comment token
+ A start tag token
+ An end tag token
+ A character token that is not one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE
+ An end-of-file token */
+ if((isset($token['error']) && $token['error']) ||
+ $token['type'] === HTML5::COMMENT ||
+ $token['type'] === HTML5::STARTTAG ||
+ $token['type'] === HTML5::ENDTAG ||
+ $token['type'] === HTML5::EOF ||
+ ($token['type'] === HTML5::CHARACTR && isset($token['data']) &&
+ !preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data']))) {
+ /* This specification does not define how to handle this case. In
+ particular, user agents may ignore the entirety of this specification
+ altogether for such documents, and instead invoke special parse modes
+ with a greater emphasis on backwards compatibility. */
+
+ $this->phase = self::ROOT_PHASE;
+ return $this->rootElementPhase($token);
+
+ /* A DOCTYPE token marked as being correct */
+ } elseif(isset($token['error']) && !$token['error']) {
+ /* Append a DocumentType node to the Document node, with the name
+ attribute set to the name given in the DOCTYPE token (which will be
+ "HTML"), and the other attributes specific to DocumentType objects
+ set to null, empty lists, or the empty string as appropriate. */
+ $doctype = new DOMDocumentType(null, null, 'HTML');
+
+ /* Then, switch to the root element phase of the tree construction
+ stage. */
+ $this->phase = self::ROOT_PHASE;
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE */
+ } elseif(isset($token['data']) && preg_match('/^[\t\n\x0b\x0c ]+$/',
+ $token['data'])) {
+ /* Append that character to the Document node. */
+ $text = $this->dom->createTextNode($token['data']);
+ $this->dom->appendChild($text);
+ }
+ }
+
+ private function rootElementPhase($token) {
+ /* After the initial phase, as each token is emitted from the tokenisation
+ stage, it must be processed as described in this section. */
+
+ /* A DOCTYPE token */
+ if($token['type'] === HTML5::DOCTYPE) {
+ // Parse error. Ignore the token.
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the Document object with the data
+ attribute set to the data given in the comment token. */
+ $comment = $this->dom->createComment($token['data']);
+ $this->dom->appendChild($comment);
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE */
+ } elseif($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
+ /* Append that character to the Document node. */
+ $text = $this->dom->createTextNode($token['data']);
+ $this->dom->appendChild($text);
+
+ /* A character token that is not one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED
+ (FF), or U+0020 SPACE
+ A start tag token
+ An end tag token
+ An end-of-file token */
+ } elseif(($token['type'] === HTML5::CHARACTR &&
+ !preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) ||
+ $token['type'] === HTML5::STARTTAG ||
+ $token['type'] === HTML5::ENDTAG ||
+ $token['type'] === HTML5::EOF) {
+ /* Create an HTMLElement node with the tag name html, in the HTML
+ namespace. Append it to the Document object. Switch to the main
+ phase and reprocess the current token. */
+ $html = $this->dom->createElement('html');
+ $this->dom->appendChild($html);
+ $this->stack[] = $html;
+
+ $this->phase = self::MAIN_PHASE;
+ return $this->mainPhase($token);
+ }
+ }
+
+ private function mainPhase($token) {
+ /* Tokens in the main phase must be handled as follows: */
+
+ /* A DOCTYPE token */
+ if($token['type'] === HTML5::DOCTYPE) {
+ // Parse error. Ignore the token.
+
+ /* A start tag token with the tag name "html" */
+ } elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'html') {
+ /* If this start tag token was not the first start tag token, then
+ it is a parse error. */
+
+ /* For each attribute on the token, check to see if the attribute
+ is already present on the top element of the stack of open elements.
+ If it is not, add the attribute and its corresponding value to that
+ element. */
+ foreach($token['attr'] as $attr) {
+ if(!$this->stack[0]->hasAttribute($attr['name'])) {
+ $this->stack[0]->setAttribute($attr['name'], $attr['value']);
+ }
+ }
+
+ /* An end-of-file token */
+ } elseif($token['type'] === HTML5::EOF) {
+ /* Generate implied end tags. */
+ $this->generateImpliedEndTags();
+
+ /* Anything else. */
+ } else {
+ /* Depends on the insertion mode: */
+ switch($this->mode) {
+ case self::BEFOR_HEAD: return $this->beforeHead($token); break;
+ case self::IN_HEAD: return $this->inHead($token); break;
+ case self::AFTER_HEAD: return $this->afterHead($token); break;
+ case self::IN_BODY: return $this->inBody($token); break;
+ case self::IN_TABLE: return $this->inTable($token); break;
+ case self::IN_CAPTION: return $this->inCaption($token); break;
+ case self::IN_CGROUP: return $this->inColumnGroup($token); break;
+ case self::IN_TBODY: return $this->inTableBody($token); break;
+ case self::IN_ROW: return $this->inRow($token); break;
+ case self::IN_CELL: return $this->inCell($token); break;
+ case self::IN_SELECT: return $this->inSelect($token); break;
+ case self::AFTER_BODY: return $this->afterBody($token); break;
+ case self::IN_FRAME: return $this->inFrameset($token); break;
+ case self::AFTR_FRAME: return $this->afterFrameset($token); break;
+ case self::END_PHASE: return $this->trailingEndPhase($token); break;
+ }
+ }
+ }
+
+ private function beforeHead($token) {
+ /* Handle the token as follows: */
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE */
+ if($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
+ /* Append the character to the current node. */
+ $this->insertText($token['data']);
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the current node with the data attribute
+ set to the data given in the comment token. */
+ $this->insertComment($token['data']);
+
+ /* A start tag token with the tag name "head" */
+ } elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'head') {
+ /* Create an element for the token, append the new element to the
+ current node and push it onto the stack of open elements. */
+ $element = $this->insertElement($token);
+
+ /* Set the head element pointer to this new element node. */
+ $this->head_pointer = $element;
+
+ /* Change the insertion mode to "in head". */
+ $this->mode = self::IN_HEAD;
+
+ /* A start tag token whose tag name is one of: "base", "link", "meta",
+ "script", "style", "title". Or an end tag with the tag name "html".
+ Or a character token that is not one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE. Or any other start tag token */
+ } elseif($token['type'] === HTML5::STARTTAG ||
+ ($token['type'] === HTML5::ENDTAG && $token['name'] === 'html') ||
+ ($token['type'] === HTML5::CHARACTR && !preg_match('/^[\t\n\x0b\x0c ]$/',
+ $token['data']))) {
+ /* Act as if a start tag token with the tag name "head" and no
+ attributes had been seen, then reprocess the current token. */
+ $this->beforeHead(array(
+ 'name' => 'head',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => array()
+ ));
+
+ return $this->inHead($token);
+
+ /* Any other end tag */
+ } elseif($token['type'] === HTML5::ENDTAG) {
+ /* Parse error. Ignore the token. */
+ }
+ }
+
+ private function inHead($token) {
+ /* Handle the token as follows: */
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE.
+
+ THIS DIFFERS FROM THE SPEC: If the current node is either a title, style
+ or script element, append the character to the current node regardless
+ of its content. */
+ if(($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) || (
+ $token['type'] === HTML5::CHARACTR && in_array(end($this->stack)->nodeName,
+ array('title', 'style', 'script')))) {
+ /* Append the character to the current node. */
+ $this->insertText($token['data']);
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the current node with the data attribute
+ set to the data given in the comment token. */
+ $this->insertComment($token['data']);
+
+ } elseif($token['type'] === HTML5::ENDTAG &&
+ in_array($token['name'], array('title', 'style', 'script'))) {
+ array_pop($this->stack);
+ return HTML5::PCDATA;
+
+ /* A start tag with the tag name "title" */
+ } elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'title') {
+ /* Create an element for the token and append the new element to the
+ node pointed to by the head element pointer, or, if that is null
+ (innerHTML case), to the current node. */
+ if($this->head_pointer !== null) {
+ $element = $this->insertElement($token, false);
+ $this->head_pointer->appendChild($element);
+
+ } else {
+ $element = $this->insertElement($token);
+ }
+
+ /* Switch the tokeniser's content model flag to the RCDATA state. */
+ return HTML5::RCDATA;
+
+ /* A start tag with the tag name "style" */
+ } elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'style') {
+ /* Create an element for the token and append the new element to the
+ node pointed to by the head element pointer, or, if that is null
+ (innerHTML case), to the current node. */
+ if($this->head_pointer !== null) {
+ $element = $this->insertElement($token, false);
+ $this->head_pointer->appendChild($element);
+
+ } else {
+ $this->insertElement($token);
+ }
+
+ /* Switch the tokeniser's content model flag to the CDATA state. */
+ return HTML5::CDATA;
+
+ /* A start tag with the tag name "script" */
+ } elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'script') {
+ /* Create an element for the token. */
+ $element = $this->insertElement($token, false);
+ $this->head_pointer->appendChild($element);
+
+ /* Switch the tokeniser's content model flag to the CDATA state. */
+ return HTML5::CDATA;
+
+ /* A start tag with the tag name "base", "link", or "meta" */
+ } elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
+ array('base', 'link', 'meta'))) {
+ /* Create an element for the token and append the new element to the
+ node pointed to by the head element pointer, or, if that is null
+ (innerHTML case), to the current node. */
+ if($this->head_pointer !== null) {
+ $element = $this->insertElement($token, false);
+ $this->head_pointer->appendChild($element);
+ array_pop($this->stack);
+
+ } else {
+ $this->insertElement($token);
+ }
+
+ /* An end tag with the tag name "head" */
+ } elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'head') {
+ /* If the current node is a head element, pop the current node off
+ the stack of open elements. */
+ if($this->head_pointer->isSameNode(end($this->stack))) {
+ array_pop($this->stack);
+
+ /* Otherwise, this is a parse error. */
+ } else {
+ // k
+ }
+
+ /* Change the insertion mode to "after head". */
+ $this->mode = self::AFTER_HEAD;
+
+ /* A start tag with the tag name "head" or an end tag except "html". */
+ } elseif(($token['type'] === HTML5::STARTTAG && $token['name'] === 'head') ||
+ ($token['type'] === HTML5::ENDTAG && $token['name'] !== 'html')) {
+ // Parse error. Ignore the token.
+
+ /* Anything else */
+ } else {
+ /* If the current node is a head element, act as if an end tag
+ token with the tag name "head" had been seen. */
+ if($this->head_pointer->isSameNode(end($this->stack))) {
+ $this->inHead(array(
+ 'name' => 'head',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ /* Otherwise, change the insertion mode to "after head". */
+ } else {
+ $this->mode = self::AFTER_HEAD;
+ }
+
+ /* Then, reprocess the current token. */
+ return $this->afterHead($token);
+ }
+ }
+
+ private function afterHead($token) {
+ /* Handle the token as follows: */
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE */
+ if($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
+ /* Append the character to the current node. */
+ $this->insertText($token['data']);
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the current node with the data attribute
+ set to the data given in the comment token. */
+ $this->insertComment($token['data']);
+
+ /* A start tag token with the tag name "body" */
+ } elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'body') {
+ /* Insert a body element for the token. */
+ $this->insertElement($token);
+
+ /* Change the insertion mode to "in body". */
+ $this->mode = self::IN_BODY;
+
+ /* A start tag token with the tag name "frameset" */
+ } elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'frameset') {
+ /* Insert a frameset element for the token. */
+ $this->insertElement($token);
+
+ /* Change the insertion mode to "in frameset". */
+ $this->mode = self::IN_FRAME;
+
+ /* A start tag token whose tag name is one of: "base", "link", "meta",
+ "script", "style", "title" */
+ } elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
+ array('base', 'link', 'meta', 'script', 'style', 'title'))) {
+ /* Parse error. Switch the insertion mode back to "in head" and
+ reprocess the token. */
+ $this->mode = self::IN_HEAD;
+ return $this->inHead($token);
+
+ /* Anything else */
+ } else {
+ /* Act as if a start tag token with the tag name "body" and no
+ attributes had been seen, and then reprocess the current token. */
+ $this->afterHead(array(
+ 'name' => 'body',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => array()
+ ));
+
+ return $this->inBody($token);
+ }
+ }
+
+ private function inBody($token) {
+ /* Handle the token as follows: */
+
+ switch($token['type']) {
+ /* A character token */
+ case HTML5::CHARACTR:
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ /* Append the token's character to the current node. */
+ $this->insertText($token['data']);
+ break;
+
+ /* A comment token */
+ case HTML5::COMMENT:
+ /* Append a Comment node to the current node with the data
+ attribute set to the data given in the comment token. */
+ $this->insertComment($token['data']);
+ break;
+
+ case HTML5::STARTTAG:
+ switch($token['name']) {
+ /* A start tag token whose tag name is one of: "script",
+ "style" */
+ case 'script': case 'style':
+ /* Process the token as if the insertion mode had been "in
+ head". */
+ return $this->inHead($token);
+ break;
+
+ /* A start tag token whose tag name is one of: "base", "link",
+ "meta", "title" */
+ case 'base': case 'link': case 'meta': case 'title':
+ /* Parse error. Process the token as if the insertion mode
+ had been "in head". */
+ return $this->inHead($token);
+ break;
+
+ /* A start tag token with the tag name "body" */
+ case 'body':
+ /* Parse error. If the second element on the stack of open
+ elements is not a body element, or, if the stack of open
+ elements has only one node on it, then ignore the token.
+ (innerHTML case) */
+ if(count($this->stack) === 1 || $this->stack[1]->nodeName !== 'body') {
+ // Ignore
+
+ /* Otherwise, for each attribute on the token, check to see
+ if the attribute is already present on the body element (the
+ second element) on the stack of open elements. If it is not,
+ add the attribute and its corresponding value to that
+ element. */
+ } else {
+ foreach($token['attr'] as $attr) {
+ if(!$this->stack[1]->hasAttribute($attr['name'])) {
+ $this->stack[1]->setAttribute($attr['name'], $attr['value']);
+ }
+ }
+ }
+ break;
+
+ /* A start tag whose tag name is one of: "address",
+ "blockquote", "center", "dir", "div", "dl", "fieldset",
+ "listing", "menu", "ol", "p", "ul" */
+ case 'address': case 'blockquote': case 'center': case 'dir':
+ case 'div': case 'dl': case 'fieldset': case 'listing':
+ case 'menu': case 'ol': case 'p': case 'ul':
+ /* If the stack of open elements has a p element in scope,
+ then act as if an end tag with the tag name p had been
+ seen. */
+ if($this->elementInScope('p')) {
+ $this->emitToken(array(
+ 'name' => 'p',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+ break;
+
+ /* A start tag whose tag name is "form" */
+ case 'form':
+ /* If the form element pointer is not null, ignore the
+ token with a parse error. */
+ if($this->form_pointer !== null) {
+ // Ignore.
+
+ /* Otherwise: */
+ } else {
+ /* If the stack of open elements has a p element in
+ scope, then act as if an end tag with the tag name p
+ had been seen. */
+ if($this->elementInScope('p')) {
+ $this->emitToken(array(
+ 'name' => 'p',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* Insert an HTML element for the token, and set the
+ form element pointer to point to the element created. */
+ $element = $this->insertElement($token);
+ $this->form_pointer = $element;
+ }
+ break;
+
+ /* A start tag whose tag name is "li", "dd" or "dt" */
+ case 'li': case 'dd': case 'dt':
+ /* If the stack of open elements has a p element in scope,
+ then act as if an end tag with the tag name p had been
+ seen. */
+ if($this->elementInScope('p')) {
+ $this->emitToken(array(
+ 'name' => 'p',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ $stack_length = count($this->stack) - 1;
+
+ for($n = $stack_length; 0 <= $n; $n--) {
+ /* 1. Initialise node to be the current node (the
+ bottommost node of the stack). */
+ $stop = false;
+ $node = $this->stack[$n];
+ $cat = $this->getElementCategory($node->tagName);
+
+ /* 2. If node is an li, dd or dt element, then pop all
+ the nodes from the current node up to node, including
+ node, then stop this algorithm. */
+ if($token['name'] === $node->tagName || ($token['name'] !== 'li'
+ && ($node->tagName === 'dd' || $node->tagName === 'dt'))) {
+ for($x = $stack_length; $x >= $n ; $x--) {
+ array_pop($this->stack);
+ }
+
+ break;
+ }
+
+ /* 3. If node is not in the formatting category, and is
+ not in the phrasing category, and is not an address or
+ div element, then stop this algorithm. */
+ if($cat !== self::FORMATTING && $cat !== self::PHRASING &&
+ $node->tagName !== 'address' && $node->tagName !== 'div') {
+ break;
+ }
+ }
+
+ /* Finally, insert an HTML element with the same tag
+ name as the token's. */
+ $this->insertElement($token);
+ break;
+
+ /* A start tag token whose tag name is "plaintext" */
+ case 'plaintext':
+ /* If the stack of open elements has a p element in scope,
+ then act as if an end tag with the tag name p had been
+ seen. */
+ if($this->elementInScope('p')) {
+ $this->emitToken(array(
+ 'name' => 'p',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ return HTML5::PLAINTEXT;
+ break;
+
+ /* A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
+ "h5", "h6" */
+ case 'h1': case 'h2': case 'h3': case 'h4': case 'h5': case 'h6':
+ /* If the stack of open elements has a p element in scope,
+ then act as if an end tag with the tag name p had been seen. */
+ if($this->elementInScope('p')) {
+ $this->emitToken(array(
+ 'name' => 'p',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* If the stack of open elements has in scope an element whose
+ tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6", then
+ this is a parse error; pop elements from the stack until an
+ element with one of those tag names has been popped from the
+ stack. */
+ while($this->elementInScope(array('h1', 'h2', 'h3', 'h4', 'h5', 'h6'))) {
+ array_pop($this->stack);
+ }
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+ break;
+
+ /* A start tag whose tag name is "a" */
+ case 'a':
+ /* If the list of active formatting elements contains
+ an element whose tag name is "a" between the end of the
+ list and the last marker on the list (or the start of
+ the list if there is no marker on the list), then this
+ is a parse error; act as if an end tag with the tag name
+ "a" had been seen, then remove that element from the list
+ of active formatting elements and the stack of open
+ elements if the end tag didn't already remove it (it
+ might not have if the element is not in table scope). */
+ $leng = count($this->a_formatting);
+
+ for($n = $leng - 1; $n >= 0; $n--) {
+ if($this->a_formatting[$n] === self::MARKER) {
+ break;
+
+ } elseif($this->a_formatting[$n]->nodeName === 'a') {
+ $this->emitToken(array(
+ 'name' => 'a',
+ 'type' => HTML5::ENDTAG
+ ));
+ break;
+ }
+ }
+
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ /* Insert an HTML element for the token. */
+ $el = $this->insertElement($token);
+
+ /* Add that element to the list of active formatting
+ elements. */
+ $this->a_formatting[] = $el;
+ break;
+
+ /* A start tag whose tag name is one of: "b", "big", "em", "font",
+ "i", "nobr", "s", "small", "strike", "strong", "tt", "u" */
+ case 'b': case 'big': case 'em': case 'font': case 'i':
+ case 'nobr': case 's': case 'small': case 'strike':
+ case 'strong': case 'tt': case 'u':
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ /* Insert an HTML element for the token. */
+ $el = $this->insertElement($token);
+
+ /* Add that element to the list of active formatting
+ elements. */
+ $this->a_formatting[] = $el;
+ break;
+
+ /* A start tag token whose tag name is "button" */
+ case 'button':
+ /* If the stack of open elements has a button element in scope,
+ then this is a parse error; act as if an end tag with the tag
+ name "button" had been seen, then reprocess the token. (We don't
+ do that. Unnecessary.) */
+ if($this->elementInScope('button')) {
+ $this->inBody(array(
+ 'name' => 'button',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* Insert a marker at the end of the list of active
+ formatting elements. */
+ $this->a_formatting[] = self::MARKER;
+ break;
+
+ /* A start tag token whose tag name is one of: "marquee", "object" */
+ case 'marquee': case 'object':
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* Insert a marker at the end of the list of active
+ formatting elements. */
+ $this->a_formatting[] = self::MARKER;
+ break;
+
+ /* A start tag token whose tag name is "xmp" */
+ case 'xmp':
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* Switch the content model flag to the CDATA state. */
+ return HTML5::CDATA;
+ break;
+
+ /* A start tag whose tag name is "table" */
+ case 'table':
+ /* If the stack of open elements has a p element in scope,
+ then act as if an end tag with the tag name p had been seen. */
+ if($this->elementInScope('p')) {
+ $this->emitToken(array(
+ 'name' => 'p',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* Change the insertion mode to "in table". */
+ $this->mode = self::IN_TABLE;
+ break;
+
+ /* A start tag whose tag name is one of: "area", "basefont",
+ "bgsound", "br", "embed", "img", "param", "spacer", "wbr" */
+ case 'area': case 'basefont': case 'bgsound': case 'br':
+ case 'embed': case 'img': case 'param': case 'spacer':
+ case 'wbr':
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* Immediately pop the current node off the stack of open elements. */
+ array_pop($this->stack);
+ break;
+
+ /* A start tag whose tag name is "hr" */
+ case 'hr':
+ /* If the stack of open elements has a p element in scope,
+ then act as if an end tag with the tag name p had been seen. */
+ if($this->elementInScope('p')) {
+ $this->emitToken(array(
+ 'name' => 'p',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* Immediately pop the current node off the stack of open elements. */
+ array_pop($this->stack);
+ break;
+
+ /* A start tag whose tag name is "image" */
+ case 'image':
+ /* Parse error. Change the token's tag name to "img" and
+ reprocess it. (Don't ask.) */
+ $token['name'] = 'img';
+ return $this->inBody($token);
+ break;
+
+ /* A start tag whose tag name is "input" */
+ case 'input':
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ /* Insert an input element for the token. */
+ $element = $this->insertElement($token, false);
+
+ /* If the form element pointer is not null, then associate the
+ input element with the form element pointed to by the form
+ element pointer. */
+ $this->form_pointer !== null
+ ? $this->form_pointer->appendChild($element)
+ : end($this->stack)->appendChild($element);
+
+ /* Pop that input element off the stack of open elements. */
+ array_pop($this->stack);
+ break;
+
+ /* A start tag whose tag name is "isindex" */
+ case 'isindex':
+ /* Parse error. */
+ // w/e
+
+ /* If the form element pointer is not null,
+ then ignore the token. */
+ if($this->form_pointer === null) {
+ /* Act as if a start tag token with the tag name "form" had
+ been seen. */
+ $this->inBody(array(
+ 'name' => 'body',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => array()
+ ));
+
+ /* Act as if a start tag token with the tag name "hr" had
+ been seen. */
+ $this->inBody(array(
+ 'name' => 'hr',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => array()
+ ));
+
+ /* Act as if a start tag token with the tag name "p" had
+ been seen. */
+ $this->inBody(array(
+ 'name' => 'p',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => array()
+ ));
+
+ /* Act as if a start tag token with the tag name "label"
+ had been seen. */
+ $this->inBody(array(
+ 'name' => 'label',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => array()
+ ));
+
+ /* Act as if a stream of character tokens had been seen. */
+ $this->insertText('This is a searchable index. '.
+ 'Insert your search keywords here: ');
+
+ /* Act as if a start tag token with the tag name "input"
+ had been seen, with all the attributes from the "isindex"
+ token, except with the "name" attribute set to the value
+ "isindex" (ignoring any explicit "name" attribute). */
+ $attr = $token['attr'];
+ $attr[] = array('name' => 'name', 'value' => 'isindex');
+
+ $this->inBody(array(
+ 'name' => 'input',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => $attr
+ ));
+
+ /* Act as if a stream of character tokens had been seen
+ (see below for what they should say). */
+ $this->insertText('This is a searchable index. '.
+ 'Insert your search keywords here: ');
+
+ /* Act as if an end tag token with the tag name "label"
+ had been seen. */
+ $this->inBody(array(
+ 'name' => 'label',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ /* Act as if an end tag token with the tag name "p" had
+ been seen. */
+ $this->inBody(array(
+ 'name' => 'p',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ /* Act as if a start tag token with the tag name "hr" had
+ been seen. */
+ $this->inBody(array(
+ 'name' => 'hr',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ /* Act as if an end tag token with the tag name "form" had
+ been seen. */
+ $this->inBody(array(
+ 'name' => 'form',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+ break;
+
+ /* A start tag whose tag name is "textarea" */
+ case 'textarea':
+ $this->insertElement($token);
+
+ /* Switch the tokeniser's content model flag to the
+ RCDATA state. */
+ return HTML5::RCDATA;
+ break;
+
+ /* A start tag whose tag name is one of: "iframe", "noembed",
+ "noframes" */
+ case 'iframe': case 'noembed': case 'noframes':
+ $this->insertElement($token);
+
+ /* Switch the tokeniser's content model flag to the CDATA state. */
+ return HTML5::CDATA;
+ break;
+
+ /* A start tag whose tag name is "select" */
+ case 'select':
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* Change the insertion mode to "in select". */
+ $this->mode = self::IN_SELECT;
+ break;
+
+ /* A start or end tag whose tag name is one of: "caption", "col",
+ "colgroup", "frame", "frameset", "head", "option", "optgroup",
+ "tbody", "td", "tfoot", "th", "thead", "tr". */
+ case 'caption': case 'col': case 'colgroup': case 'frame':
+ case 'frameset': case 'head': case 'option': case 'optgroup':
+ case 'tbody': case 'td': case 'tfoot': case 'th': case 'thead':
+ case 'tr':
+ // Parse error. Ignore the token.
+ break;
+
+ /* A start or end tag whose tag name is one of: "event-source",
+ "section", "nav", "article", "aside", "header", "footer",
+ "datagrid", "command" */
+ case 'event-source': case 'section': case 'nav': case 'article':
+ case 'aside': case 'header': case 'footer': case 'datagrid':
+ case 'command':
+ // Work in progress!
+ break;
+
+ /* A start tag token not covered by the previous entries */
+ default:
+ /* Reconstruct the active formatting elements, if any. */
+ $this->reconstructActiveFormattingElements();
+
+ $this->insertElement($token, true, true);
+ break;
+ }
+ break;
+
+ case HTML5::ENDTAG:
+ switch($token['name']) {
+ /* An end tag with the tag name "body" */
+ case 'body':
+ /* If the second element in the stack of open elements is
+ not a body element, this is a parse error. Ignore the token.
+ (innerHTML case) */
+ if(count($this->stack) < 2 || $this->stack[1]->nodeName !== 'body') {
+ // Ignore.
+
+ /* If the current node is not the body element, then this
+ is a parse error. */
+ } elseif(end($this->stack)->nodeName !== 'body') {
+ // Parse error.
+ }
+
+ /* Change the insertion mode to "after body". */
+ $this->mode = self::AFTER_BODY;
+ break;
+
+ /* An end tag with the tag name "html" */
+ case 'html':
+ /* Act as if an end tag with tag name "body" had been seen,
+ then, if that token wasn't ignored, reprocess the current
+ token. */
+ $this->inBody(array(
+ 'name' => 'body',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ return $this->afterBody($token);
+ break;
+
+ /* An end tag whose tag name is one of: "address", "blockquote",
+ "center", "dir", "div", "dl", "fieldset", "listing", "menu",
+ "ol", "pre", "ul" */
+ case 'address': case 'blockquote': case 'center': case 'dir':
+ case 'div': case 'dl': case 'fieldset': case 'listing':
+ case 'menu': case 'ol': case 'pre': case 'ul':
+ /* If the stack of open elements has an element in scope
+ with the same tag name as that of the token, then generate
+ implied end tags. */
+ if($this->elementInScope($token['name'])) {
+ $this->generateImpliedEndTags();
+
+ /* Now, if the current node is not an element with
+ the same tag name as that of the token, then this
+ is a parse error. */
+ // w/e
+
+ /* If the stack of open elements has an element in
+ scope with the same tag name as that of the token,
+ then pop elements from this stack until an element
+ with that tag name has been popped from the stack. */
+ for($n = count($this->stack) - 1; $n >= 0; $n--) {
+ if($this->stack[$n]->nodeName === $token['name']) {
+ $n = -1;
+ }
+
+ array_pop($this->stack);
+ }
+ }
+ break;
+
+ /* An end tag whose tag name is "form" */
+ case 'form':
+ /* If the stack of open elements has an element in scope
+ with the same tag name as that of the token, then generate
+ implied end tags. */
+ if($this->elementInScope($token['name'])) {
+ $this->generateImpliedEndTags();
+
+ }
+
+ if(end($this->stack)->nodeName !== $token['name']) {
+ /* Now, if the current node is not an element with the
+ same tag name as that of the token, then this is a parse
+ error. */
+ // w/e
+
+ } else {
+ /* Otherwise, if the current node is an element with
+ the same tag name as that of the token pop that element
+ from the stack. */
+ array_pop($this->stack);
+ }
+
+ /* In any case, set the form element pointer to null. */
+ $this->form_pointer = null;
+ break;
+
+ /* An end tag whose tag name is "p" */
+ case 'p':
+ /* If the stack of open elements has a p element in scope,
+ then generate implied end tags, except for p elements. */
+ if($this->elementInScope('p')) {
+ $this->generateImpliedEndTags(array('p'));
+
+ /* If the current node is not a p element, then this is
+ a parse error. */
+ // k
+
+ /* If the stack of open elements has a p element in
+ scope, then pop elements from this stack until the stack
+ no longer has a p element in scope. */
+ for($n = count($this->stack) - 1; $n >= 0; $n--) {
+ if($this->elementInScope('p')) {
+ array_pop($this->stack);
+
+ } else {
+ break;
+ }
+ }
+ }
+ break;
+
+ /* An end tag whose tag name is "dd", "dt", or "li" */
+ case 'dd': case 'dt': case 'li':
+ /* If the stack of open elements has an element in scope
+ whose tag name matches the tag name of the token, then
+ generate implied end tags, except for elements with the
+ same tag name as the token. */
+ if($this->elementInScope($token['name'])) {
+ $this->generateImpliedEndTags(array($token['name']));
+
+ /* If the current node is not an element with the same
+ tag name as the token, then this is a parse error. */
+ // w/e
+
+ /* If the stack of open elements has an element in scope
+ whose tag name matches the tag name of the token, then
+ pop elements from this stack until an element with that
+ tag name has been popped from the stack. */
+ for($n = count($this->stack) - 1; $n >= 0; $n--) {
+ if($this->stack[$n]->nodeName === $token['name']) {
+ $n = -1;
+ }
+
+ array_pop($this->stack);
+ }
+ }
+ break;
+
+ /* An end tag whose tag name is one of: "h1", "h2", "h3", "h4",
+ "h5", "h6" */
+ case 'h1': case 'h2': case 'h3': case 'h4': case 'h5': case 'h6':
+ $elements = array('h1', 'h2', 'h3', 'h4', 'h5', 'h6');
+
+ /* If the stack of open elements has in scope an element whose
+ tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6", then
+ generate implied end tags. */
+ if($this->elementInScope($elements)) {
+ $this->generateImpliedEndTags();
+
+ /* Now, if the current node is not an element with the same
+ tag name as that of the token, then this is a parse error. */
+ // w/e
+
+ /* If the stack of open elements has in scope an element
+ whose tag name is one of "h1", "h2", "h3", "h4", "h5", or
+ "h6", then pop elements from the stack until an element
+ with one of those tag names has been popped from the stack. */
+ while($this->elementInScope($elements)) {
+ array_pop($this->stack);
+ }
+ }
+ break;
+
+ /* An end tag whose tag name is one of: "a", "b", "big", "em",
+ "font", "i", "nobr", "s", "small", "strike", "strong", "tt", "u" */
+ case 'a': case 'b': case 'big': case 'em': case 'font':
+ case 'i': case 'nobr': case 's': case 'small': case 'strike':
+ case 'strong': case 'tt': case 'u':
+ /* 1. Let the formatting element be the last element in
+ the list of active formatting elements that:
+ * is between the end of the list and the last scope
+ marker in the list, if any, or the start of the list
+ otherwise, and
+ * has the same tag name as the token.
+ */
+ while(true) {
+ for($a = count($this->a_formatting) - 1; $a >= 0; $a--) {
+ if($this->a_formatting[$a] === self::MARKER) {
+ break;
+
+ } elseif($this->a_formatting[$a]->tagName === $token['name']) {
+ $formatting_element = $this->a_formatting[$a];
+ $in_stack = in_array($formatting_element, $this->stack, true);
+ $fe_af_pos = $a;
+ break;
+ }
+ }
+
+ /* If there is no such node, or, if that node is
+ also in the stack of open elements but the element
+ is not in scope, then this is a parse error. Abort
+ these steps. The token is ignored. */
+ if(!isset($formatting_element) || ($in_stack &&
+ !$this->elementInScope($token['name']))) {
+ break;
+
+ /* Otherwise, if there is such a node, but that node
+ is not in the stack of open elements, then this is a
+ parse error; remove the element from the list, and
+ abort these steps. */
+ } elseif(isset($formatting_element) && !$in_stack) {
+ unset($this->a_formatting[$fe_af_pos]);
+ $this->a_formatting = array_merge($this->a_formatting);
+ break;
+ }
+
+ /* 2. Let the furthest block be the topmost node in the
+ stack of open elements that is lower in the stack
+ than the formatting element, and is not an element in
+ the phrasing or formatting categories. There might
+ not be one. */
+ $fe_s_pos = array_search($formatting_element, $this->stack, true);
+ $length = count($this->stack);
+
+ for($s = $fe_s_pos + 1; $s < $length; $s++) {
+ $category = $this->getElementCategory($this->stack[$s]->nodeName);
+
+ if($category !== self::PHRASING && $category !== self::FORMATTING) {
+ $furthest_block = $this->stack[$s];
+ }
+ }
+
+ /* 3. If there is no furthest block, then the UA must
+ skip the subsequent steps and instead just pop all
+ the nodes from the bottom of the stack of open
+ elements, from the current node up to the formatting
+ element, and remove the formatting element from the
+ list of active formatting elements. */
+ if(!isset($furthest_block)) {
+ for($n = $length - 1; $n >= $fe_s_pos; $n--) {
+ array_pop($this->stack);
+ }
+
+ unset($this->a_formatting[$fe_af_pos]);
+ $this->a_formatting = array_merge($this->a_formatting);
+ break;
+ }
+
+ /* 4. Let the common ancestor be the element
+ immediately above the formatting element in the stack
+ of open elements. */
+ $common_ancestor = $this->stack[$fe_s_pos - 1];
+
+ /* 5. If the furthest block has a parent node, then
+ remove the furthest block from its parent node. */
+ if($furthest_block->parentNode !== null) {
+ $furthest_block->parentNode->removeChild($furthest_block);
+ }
+
+ /* 6. Let a bookmark note the position of the
+ formatting element in the list of active formatting
+ elements relative to the elements on either side
+ of it in the list. */
+ $bookmark = $fe_af_pos;
+
+ /* 7. Let node and last node be the furthest block.
+ Follow these steps: */
+ $node = $furthest_block;
+ $last_node = $furthest_block;
+
+ while(true) {
+ for($n = array_search($node, $this->stack, true) - 1; $n >= 0; $n--) {
+ /* 7.1 Let node be the element immediately
+ prior to node in the stack of open elements. */
+ $node = $this->stack[$n];
+
+ /* 7.2 If node is not in the list of active
+ formatting elements, then remove node from
+ the stack of open elements and then go back
+ to step 1. */
+ if(!in_array($node, $this->a_formatting, true)) {
+ unset($this->stack[$n]);
+ $this->stack = array_merge($this->stack);
+
+ } else {
+ break;
+ }
+ }
+
+ /* 7.3 Otherwise, if node is the formatting
+ element, then go to the next step in the overall
+ algorithm. */
+ if($node === $formatting_element) {
+ break;
+
+ /* 7.4 Otherwise, if last node is the furthest
+ block, then move the aforementioned bookmark to
+ be immediately after the node in the list of
+ active formatting elements. */
+ } elseif($last_node === $furthest_block) {
+ $bookmark = array_search($node, $this->a_formatting, true) + 1;
+ }
+
+ /* 7.5 If node has any children, perform a
+ shallow clone of node, replace the entry for
+ node in the list of active formatting elements
+ with an entry for the clone, replace the entry
+ for node in the stack of open elements with an
+ entry for the clone, and let node be the clone. */
+ if($node->hasChildNodes()) {
+ $clone = $node->cloneNode();
+ $s_pos = array_search($node, $this->stack, true);
+ $a_pos = array_search($node, $this->a_formatting, true);
+
+ $this->stack[$s_pos] = $clone;
+ $this->a_formatting[$a_pos] = $clone;
+ $node = $clone;
+ }
+
+ /* 7.6 Insert last node into node, first removing
+ it from its previous parent node if any. */
+ if($last_node->parentNode !== null) {
+ $last_node->parentNode->removeChild($last_node);
+ }
+
+ $node->appendChild($last_node);
+
+ /* 7.7 Let last node be node. */
+ $last_node = $node;
+ }
+
+ /* 8. Insert whatever last node ended up being in
+ the previous step into the common ancestor node,
+ first removing it from its previous parent node if
+ any. */
+ if($last_node->parentNode !== null) {
+ $last_node->parentNode->removeChild($last_node);
+ }
+
+ $common_ancestor->appendChild($last_node);
+
+ /* 9. Perform a shallow clone of the formatting
+ element. */
+ $clone = $formatting_element->cloneNode();
+
+ /* 10. Take all of the child nodes of the furthest
+ block and append them to the clone created in the
+ last step. */
+ while($furthest_block->hasChildNodes()) {
+ $child = $furthest_block->firstChild;
+ $furthest_block->removeChild($child);
+ $clone->appendChild($child);
+ }
+
+ /* 11. Append that clone to the furthest block. */
+ $furthest_block->appendChild($clone);
+
+ /* 12. Remove the formatting element from the list
+ of active formatting elements, and insert the clone
+ into the list of active formatting elements at the
+ position of the aforementioned bookmark. */
+ $fe_af_pos = array_search($formatting_element, $this->a_formatting, true);
+ unset($this->a_formatting[$fe_af_pos]);
+ $this->a_formatting = array_merge($this->a_formatting);
+
+ $af_part1 = array_slice($this->a_formatting, 0, $bookmark - 1);
+ $af_part2 = array_slice($this->a_formatting, $bookmark, count($this->a_formatting));
+ $this->a_formatting = array_merge($af_part1, array($clone), $af_part2);
+
+ /* 13. Remove the formatting element from the stack
+ of open elements, and insert the clone into the stack
+ of open elements immediately after (i.e. in a more
+ deeply nested position than) the position of the
+ furthest block in that stack. */
+ $fe_s_pos = array_search($formatting_element, $this->stack, true);
+ $fb_s_pos = array_search($furthest_block, $this->stack, true);
+ unset($this->stack[$fe_s_pos]);
+
+ $s_part1 = array_slice($this->stack, 0, $fb_s_pos);
+ $s_part2 = array_slice($this->stack, $fb_s_pos + 1, count($this->stack));
+ $this->stack = array_merge($s_part1, array($clone), $s_part2);
+
+ /* 14. Jump back to step 1 in this series of steps. */
+ unset($formatting_element, $fe_af_pos, $fe_s_pos, $furthest_block);
+ }
+ break;
+
+ /* An end tag token whose tag name is one of: "button",
+ "marquee", "object" */
+ case 'button': case 'marquee': case 'object':
+ /* If the stack of open elements has an element in scope whose
+ tag name matches the tag name of the token, then generate implied
+ tags. */
+ if($this->elementInScope($token['name'])) {
+ $this->generateImpliedEndTags();
+
+ /* Now, if the current node is not an element with the same
+ tag name as the token, then this is a parse error. */
+ // k
+
+ /* Now, if the stack of open elements has an element in scope
+ whose tag name matches the tag name of the token, then pop
+ elements from the stack until that element has been popped from
+ the stack, and clear the list of active formatting elements up
+ to the last marker. */
+ for($n = count($this->stack) - 1; $n >= 0; $n--) {
+ if($this->stack[$n]->nodeName === $token['name']) {
+ $n = -1;
+ }
+
+ array_pop($this->stack);
+ }
+
+ $marker = end(array_keys($this->a_formatting, self::MARKER, true));
+
+ for($n = count($this->a_formatting) - 1; $n > $marker; $n--) {
+ array_pop($this->a_formatting);
+ }
+ }
+ break;
+
+ /* Or an end tag whose tag name is one of: "area", "basefont",
+ "bgsound", "br", "embed", "hr", "iframe", "image", "img",
+ "input", "isindex", "noembed", "noframes", "param", "select",
+ "spacer", "table", "textarea", "wbr" */
+ case 'area': case 'basefont': case 'bgsound': case 'br':
+ case 'embed': case 'hr': case 'iframe': case 'image':
+ case 'img': case 'input': case 'isindex': case 'noembed':
+ case 'noframes': case 'param': case 'select': case 'spacer':
+ case 'table': case 'textarea': case 'wbr':
+ // Parse error. Ignore the token.
+ break;
+
+ /* An end tag token not covered by the previous entries */
+ default:
+ for($n = count($this->stack) - 1; $n >= 0; $n--) {
+ /* Initialise node to be the current node (the bottommost
+ node of the stack). */
+ $node = end($this->stack);
+
+ /* If node has the same tag name as the end tag token,
+ then: */
+ if($token['name'] === $node->nodeName) {
+ /* Generate implied end tags. */
+ $this->generateImpliedEndTags();
+
+ /* If the tag name of the end tag token does not
+ match the tag name of the current node, this is a
+ parse error. */
+ // k
+
+ /* Pop all the nodes from the current node up to
+ node, including node, then stop this algorithm. */
+ for($x = count($this->stack) - $n; $x >= $n; $x--) {
+ array_pop($this->stack);
+ }
+
+ } else {
+ $category = $this->getElementCategory($node);
+
+ if($category !== self::SPECIAL && $category !== self::SCOPING) {
+ /* Otherwise, if node is in neither the formatting
+ category nor the phrasing category, then this is a
+ parse error. Stop this algorithm. The end tag token
+ is ignored. */
+ return false;
+ }
+ }
+ }
+ break;
+ }
+ break;
+ }
+ }
+
+ private function inTable($token) {
+ $clear = array('html', 'table');
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE */
+ if($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
+ /* Append the character to the current node. */
+ $text = $this->dom->createTextNode($token['data']);
+ end($this->stack)->appendChild($text);
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the current node with the data
+ attribute set to the data given in the comment token. */
+ $comment = $this->dom->createComment($token['data']);
+ end($this->stack)->appendChild($comment);
+
+ /* A start tag whose tag name is "caption" */
+ } elseif($token['type'] === HTML5::STARTTAG &&
+ $token['name'] === 'caption') {
+ /* Clear the stack back to a table context. */
+ $this->clearStackToTableContext($clear);
+
+ /* Insert a marker at the end of the list of active
+ formatting elements. */
+ $this->a_formatting[] = self::MARKER;
+
+ /* Insert an HTML element for the token, then switch the
+ insertion mode to "in caption". */
+ $this->insertElement($token);
+ $this->mode = self::IN_CAPTION;
+
+ /* A start tag whose tag name is "colgroup" */
+ } elseif($token['type'] === HTML5::STARTTAG &&
+ $token['name'] === 'colgroup') {
+ /* Clear the stack back to a table context. */
+ $this->clearStackToTableContext($clear);
+
+ /* Insert an HTML element for the token, then switch the
+ insertion mode to "in column group". */
+ $this->insertElement($token);
+ $this->mode = self::IN_CGROUP;
+
+ /* A start tag whose tag name is "col" */
+ } elseif($token['type'] === HTML5::STARTTAG &&
+ $token['name'] === 'col') {
+ $this->inTable(array(
+ 'name' => 'colgroup',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => array()
+ ));
+
+ $this->inColumnGroup($token);
+
+ /* A start tag whose tag name is one of: "tbody", "tfoot", "thead" */
+ } elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
+ array('tbody', 'tfoot', 'thead'))) {
+ /* Clear the stack back to a table context. */
+ $this->clearStackToTableContext($clear);
+
+ /* Insert an HTML element for the token, then switch the insertion
+ mode to "in table body". */
+ $this->insertElement($token);
+ $this->mode = self::IN_TBODY;
+
+ /* A start tag whose tag name is one of: "td", "th", "tr" */
+ } elseif($token['type'] === HTML5::STARTTAG &&
+ in_array($token['name'], array('td', 'th', 'tr'))) {
+ /* Act as if a start tag token with the tag name "tbody" had been
+ seen, then reprocess the current token. */
+ $this->inTable(array(
+ 'name' => 'tbody',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => array()
+ ));
+
+ return $this->inTableBody($token);
+
+ /* A start tag whose tag name is "table" */
+ } elseif($token['type'] === HTML5::STARTTAG &&
+ $token['name'] === 'table') {
+ /* Parse error. Act as if an end tag token with the tag name "table"
+ had been seen, then, if that token wasn't ignored, reprocess the
+ current token. */
+ $this->inTable(array(
+ 'name' => 'table',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ return $this->mainPhase($token);
+
+ /* An end tag whose tag name is "table" */
+ } elseif($token['type'] === HTML5::ENDTAG &&
+ $token['name'] === 'table') {
+ /* If the stack of open elements does not have an element in table
+ scope with the same tag name as the token, this is a parse error.
+ Ignore the token. (innerHTML case) */
+ if(!$this->elementInScope($token['name'], true)) {
+ return false;
+
+ /* Otherwise: */
+ } else {
+ /* Generate implied end tags. */
+ $this->generateImpliedEndTags();
+
+ /* Now, if the current node is not a table element, then this
+ is a parse error. */
+ // w/e
+
+ /* Pop elements from this stack until a table element has been
+ popped from the stack. */
+ while(true) {
+ $current = end($this->stack)->nodeName;
+ array_pop($this->stack);
+
+ if($current === 'table') {
+ break;
+ }
+ }
+
+ /* Reset the insertion mode appropriately. */
+ $this->resetInsertionMode();
+ }
+
+ /* An end tag whose tag name is one of: "body", "caption", "col",
+ "colgroup", "html", "tbody", "td", "tfoot", "th", "thead", "tr" */
+ } elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
+ array('body', 'caption', 'col', 'colgroup', 'html', 'tbody', 'td',
+ 'tfoot', 'th', 'thead', 'tr'))) {
+ // Parse error. Ignore the token.
+
+ /* Anything else */
+ } else {
+ /* Parse error. Process the token as if the insertion mode was "in
+ body", with the following exception: */
+
+ /* If the current node is a table, tbody, tfoot, thead, or tr
+ element, then, whenever a node would be inserted into the current
+ node, it must instead be inserted into the foster parent element. */
+ if(in_array(end($this->stack)->nodeName,
+ array('table', 'tbody', 'tfoot', 'thead', 'tr'))) {
+ /* The foster parent element is the parent element of the last
+ table element in the stack of open elements, if there is a
+ table element and it has such a parent element. If there is no
+ table element in the stack of open elements (innerHTML case),
+ then the foster parent element is the first element in the
+ stack of open elements (the html element). Otherwise, if there
+ is a table element in the stack of open elements, but the last
+ table element in the stack of open elements has no parent, or
+ its parent node is not an element, then the foster parent
+ element is the element before the last table element in the
+ stack of open elements. */
+ for($n = count($this->stack) - 1; $n >= 0; $n--) {
+ if($this->stack[$n]->nodeName === 'table') {
+ $table = $this->stack[$n];
+ break;
+ }
+ }
+
+ if(isset($table) && $table->parentNode !== null) {
+ $this->foster_parent = $table->parentNode;
+
+ } elseif(!isset($table)) {
+ $this->foster_parent = $this->stack[0];
+
+ } elseif(isset($table) && ($table->parentNode === null ||
+ $table->parentNode->nodeType !== XML_ELEMENT_NODE)) {
+ $this->foster_parent = $this->stack[$n - 1];
+ }
+ }
+
+ $this->inBody($token);
+ }
+ }
+
+ private function inCaption($token) {
+ /* An end tag whose tag name is "caption" */
+ if($token['type'] === HTML5::ENDTAG && $token['name'] === 'caption') {
+ /* If the stack of open elements does not have an element in table
+ scope with the same tag name as the token, this is a parse error.
+ Ignore the token. (innerHTML case) */
+ if(!$this->elementInScope($token['name'], true)) {
+ // Ignore
+
+ /* Otherwise: */
+ } else {
+ /* Generate implied end tags. */
+ $this->generateImpliedEndTags();
+
+ /* Now, if the current node is not a caption element, then this
+ is a parse error. */
+ // w/e
+
+ /* Pop elements from this stack until a caption element has
+ been popped from the stack. */
+ while(true) {
+ $node = end($this->stack)->nodeName;
+ array_pop($this->stack);
+
+ if($node === 'caption') {
+ break;
+ }
+ }
+
+ /* Clear the list of active formatting elements up to the last
+ marker. */
+ $this->clearTheActiveFormattingElementsUpToTheLastMarker();
+
+ /* Switch the insertion mode to "in table". */
+ $this->mode = self::IN_TABLE;
+ }
+
+ /* A start tag whose tag name is one of: "caption", "col", "colgroup",
+ "tbody", "td", "tfoot", "th", "thead", "tr", or an end tag whose tag
+ name is "table" */
+ } elseif(($token['type'] === HTML5::STARTTAG && in_array($token['name'],
+ array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',
+ 'thead', 'tr'))) || ($token['type'] === HTML5::ENDTAG &&
+ $token['name'] === 'table')) {
+ /* Parse error. Act as if an end tag with the tag name "caption"
+ had been seen, then, if that token wasn't ignored, reprocess the
+ current token. */
+ $this->inCaption(array(
+ 'name' => 'caption',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ return $this->inTable($token);
+
+ /* An end tag whose tag name is one of: "body", "col", "colgroup",
+ "html", "tbody", "td", "tfoot", "th", "thead", "tr" */
+ } elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
+ array('body', 'col', 'colgroup', 'html', 'tbody', 'tfoot', 'th',
+ 'thead', 'tr'))) {
+ // Parse error. Ignore the token.
+
+ /* Anything else */
+ } else {
+ /* Process the token as if the insertion mode was "in body". */
+ $this->inBody($token);
+ }
+ }
+
+ private function inColumnGroup($token) {
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE */
+ if($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
+ /* Append the character to the current node. */
+ $text = $this->dom->createTextNode($token['data']);
+ end($this->stack)->appendChild($text);
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the current node with the data
+ attribute set to the data given in the comment token. */
+ $comment = $this->dom->createComment($token['data']);
+ end($this->stack)->appendChild($comment);
+
+ /* A start tag whose tag name is "col" */
+ } elseif($token['type'] === HTML5::STARTTAG && $token['name'] === 'col') {
+ /* Insert a col element for the token. Immediately pop the current
+ node off the stack of open elements. */
+ $this->insertElement($token);
+ array_pop($this->stack);
+
+ /* An end tag whose tag name is "colgroup" */
+ } elseif($token['type'] === HTML5::ENDTAG &&
+ $token['name'] === 'colgroup') {
+ /* If the current node is the root html element, then this is a
+ parse error, ignore the token. (innerHTML case) */
+ if(end($this->stack)->nodeName === 'html') {
+ // Ignore
+
+ /* Otherwise, pop the current node (which will be a colgroup
+ element) from the stack of open elements. Switch the insertion
+ mode to "in table". */
+ } else {
+ array_pop($this->stack);
+ $this->mode = self::IN_TABLE;
+ }
+
+ /* An end tag whose tag name is "col" */
+ } elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'col') {
+ /* Parse error. Ignore the token. */
+
+ /* Anything else */
+ } else {
+ /* Act as if an end tag with the tag name "colgroup" had been seen,
+ and then, if that token wasn't ignored, reprocess the current token. */
+ $this->inColumnGroup(array(
+ 'name' => 'colgroup',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ return $this->inTable($token);
+ }
+ }
+
+ private function inTableBody($token) {
+ $clear = array('tbody', 'tfoot', 'thead', 'html');
+
+ /* A start tag whose tag name is "tr" */
+ if($token['type'] === HTML5::STARTTAG && $token['name'] === 'tr') {
+ /* Clear the stack back to a table body context. */
+ $this->clearStackToTableContext($clear);
+
+ /* Insert a tr element for the token, then switch the insertion
+ mode to "in row". */
+ $this->insertElement($token);
+ $this->mode = self::IN_ROW;
+
+ /* A start tag whose tag name is one of: "th", "td" */
+ } elseif($token['type'] === HTML5::STARTTAG &&
+ ($token['name'] === 'th' || $token['name'] === 'td')) {
+ /* Parse error. Act as if a start tag with the tag name "tr" had
+ been seen, then reprocess the current token. */
+ $this->inTableBody(array(
+ 'name' => 'tr',
+ 'type' => HTML5::STARTTAG,
+ 'attr' => array()
+ ));
+
+ return $this->inRow($token);
+
+ /* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */
+ } elseif($token['type'] === HTML5::ENDTAG &&
+ in_array($token['name'], array('tbody', 'tfoot', 'thead'))) {
+ /* If the stack of open elements does not have an element in table
+ scope with the same tag name as the token, this is a parse error.
+ Ignore the token. */
+ if(!$this->elementInScope($token['name'], true)) {
+ // Ignore
+
+ /* Otherwise: */
+ } else {
+ /* Clear the stack back to a table body context. */
+ $this->clearStackToTableContext($clear);
+
+ /* Pop the current node from the stack of open elements. Switch
+ the insertion mode to "in table". */
+ array_pop($this->stack);
+ $this->mode = self::IN_TABLE;
+ }
+
+ /* A start tag whose tag name is one of: "caption", "col", "colgroup",
+ "tbody", "tfoot", "thead", or an end tag whose tag name is "table" */
+ } elseif(($token['type'] === HTML5::STARTTAG && in_array($token['name'],
+ array('caption', 'col', 'colgroup', 'tbody', 'tfoor', 'thead'))) ||
+ ($token['type'] === HTML5::STARTTAG && $token['name'] === 'table')) {
+ /* If the stack of open elements does not have a tbody, thead, or
+ tfoot element in table scope, this is a parse error. Ignore the
+ token. (innerHTML case) */
+ if(!$this->elementInScope(array('tbody', 'thead', 'tfoot'), true)) {
+ // Ignore.
+
+ /* Otherwise: */
+ } else {
+ /* Clear the stack back to a table body context. */
+ $this->clearStackToTableContext($clear);
+
+ /* Act as if an end tag with the same tag name as the current
+ node ("tbody", "tfoot", or "thead") had been seen, then
+ reprocess the current token. */
+ $this->inTableBody(array(
+ 'name' => end($this->stack)->nodeName,
+ 'type' => HTML5::ENDTAG
+ ));
+
+ return $this->mainPhase($token);
+ }
+
+ /* An end tag whose tag name is one of: "body", "caption", "col",
+ "colgroup", "html", "td", "th", "tr" */
+ } elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
+ array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th', 'tr'))) {
+ /* Parse error. Ignore the token. */
+
+ /* Anything else */
+ } else {
+ /* Process the token as if the insertion mode was "in table". */
+ $this->inTable($token);
+ }
+ }
+
+ private function inRow($token) {
+ $clear = array('tr', 'html');
+
+ /* A start tag whose tag name is one of: "th", "td" */
+ if($token['type'] === HTML5::STARTTAG &&
+ ($token['name'] === 'th' || $token['name'] === 'td')) {
+ /* Clear the stack back to a table row context. */
+ $this->clearStackToTableContext($clear);
+
+ /* Insert an HTML element for the token, then switch the insertion
+ mode to "in cell". */
+ $this->insertElement($token);
+ $this->mode = self::IN_CELL;
+
+ /* Insert a marker at the end of the list of active formatting
+ elements. */
+ $this->a_formatting[] = self::MARKER;
+
+ /* An end tag whose tag name is "tr" */
+ } elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'tr') {
+ /* If the stack of open elements does not have an element in table
+ scope with the same tag name as the token, this is a parse error.
+ Ignore the token. (innerHTML case) */
+ if(!$this->elementInScope($token['name'], true)) {
+ // Ignore.
+
+ /* Otherwise: */
+ } else {
+ /* Clear the stack back to a table row context. */
+ $this->clearStackToTableContext($clear);
+
+ /* Pop the current node (which will be a tr element) from the
+ stack of open elements. Switch the insertion mode to "in table
+ body". */
+ array_pop($this->stack);
+ $this->mode = self::IN_TBODY;
+ }
+
+ /* A start tag whose tag name is one of: "caption", "col", "colgroup",
+ "tbody", "tfoot", "thead", "tr" or an end tag whose tag name is "table" */
+ } elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
+ array('caption', 'col', 'colgroup', 'tbody', 'tfoot', 'thead', 'tr'))) {
+ /* Act as if an end tag with the tag name "tr" had been seen, then,
+ if that token wasn't ignored, reprocess the current token. */
+ $this->inRow(array(
+ 'name' => 'tr',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ return $this->inCell($token);
+
+ /* An end tag whose tag name is one of: "tbody", "tfoot", "thead" */
+ } elseif($token['type'] === HTML5::ENDTAG &&
+ in_array($token['name'], array('tbody', 'tfoot', 'thead'))) {
+ /* If the stack of open elements does not have an element in table
+ scope with the same tag name as the token, this is a parse error.
+ Ignore the token. */
+ if(!$this->elementInScope($token['name'], true)) {
+ // Ignore.
+
+ /* Otherwise: */
+ } else {
+ /* Otherwise, act as if an end tag with the tag name "tr" had
+ been seen, then reprocess the current token. */
+ $this->inRow(array(
+ 'name' => 'tr',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ return $this->inCell($token);
+ }
+
+ /* An end tag whose tag name is one of: "body", "caption", "col",
+ "colgroup", "html", "td", "th" */
+ } elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
+ array('body', 'caption', 'col', 'colgroup', 'html', 'td', 'th', 'tr'))) {
+ /* Parse error. Ignore the token. */
+
+ /* Anything else */
+ } else {
+ /* Process the token as if the insertion mode was "in table". */
+ $this->inTable($token);
+ }
+ }
+
+ private function inCell($token) {
+ /* An end tag whose tag name is one of: "td", "th" */
+ if($token['type'] === HTML5::ENDTAG &&
+ ($token['name'] === 'td' || $token['name'] === 'th')) {
+ /* If the stack of open elements does not have an element in table
+ scope with the same tag name as that of the token, then this is a
+ parse error and the token must be ignored. */
+ if(!$this->elementInScope($token['name'], true)) {
+ // Ignore.
+
+ /* Otherwise: */
+ } else {
+ /* Generate implied end tags, except for elements with the same
+ tag name as the token. */
+ $this->generateImpliedEndTags(array($token['name']));
+
+ /* Now, if the current node is not an element with the same tag
+ name as the token, then this is a parse error. */
+ // k
+
+ /* Pop elements from this stack until an element with the same
+ tag name as the token has been popped from the stack. */
+ while(true) {
+ $node = end($this->stack)->nodeName;
+ array_pop($this->stack);
+
+ if($node === $token['name']) {
+ break;
+ }
+ }
+
+ /* Clear the list of active formatting elements up to the last
+ marker. */
+ $this->clearTheActiveFormattingElementsUpToTheLastMarker();
+
+ /* Switch the insertion mode to "in row". (The current node
+ will be a tr element at this point.) */
+ $this->mode = self::IN_ROW;
+ }
+
+ /* A start tag whose tag name is one of: "caption", "col", "colgroup",
+ "tbody", "td", "tfoot", "th", "thead", "tr" */
+ } elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
+ array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',
+ 'thead', 'tr'))) {
+ /* If the stack of open elements does not have a td or th element
+ in table scope, then this is a parse error; ignore the token.
+ (innerHTML case) */
+ if(!$this->elementInScope(array('td', 'th'), true)) {
+ // Ignore.
+
+ /* Otherwise, close the cell (see below) and reprocess the current
+ token. */
+ } else {
+ $this->closeCell();
+ return $this->inRow($token);
+ }
+
+ /* A start tag whose tag name is one of: "caption", "col", "colgroup",
+ "tbody", "td", "tfoot", "th", "thead", "tr" */
+ } elseif($token['type'] === HTML5::STARTTAG && in_array($token['name'],
+ array('caption', 'col', 'colgroup', 'tbody', 'td', 'tfoot', 'th',
+ 'thead', 'tr'))) {
+ /* If the stack of open elements does not have a td or th element
+ in table scope, then this is a parse error; ignore the token.
+ (innerHTML case) */
+ if(!$this->elementInScope(array('td', 'th'), true)) {
+ // Ignore.
+
+ /* Otherwise, close the cell (see below) and reprocess the current
+ token. */
+ } else {
+ $this->closeCell();
+ return $this->inRow($token);
+ }
+
+ /* An end tag whose tag name is one of: "body", "caption", "col",
+ "colgroup", "html" */
+ } elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
+ array('body', 'caption', 'col', 'colgroup', 'html'))) {
+ /* Parse error. Ignore the token. */
+
+ /* An end tag whose tag name is one of: "table", "tbody", "tfoot",
+ "thead", "tr" */
+ } elseif($token['type'] === HTML5::ENDTAG && in_array($token['name'],
+ array('table', 'tbody', 'tfoot', 'thead', 'tr'))) {
+ /* If the stack of open elements does not have an element in table
+ scope with the same tag name as that of the token (which can only
+ happen for "tbody", "tfoot" and "thead", or, in the innerHTML case),
+ then this is a parse error and the token must be ignored. */
+ if(!$this->elementInScope($token['name'], true)) {
+ // Ignore.
+
+ /* Otherwise, close the cell (see below) and reprocess the current
+ token. */
+ } else {
+ $this->closeCell();
+ return $this->inRow($token);
+ }
+
+ /* Anything else */
+ } else {
+ /* Process the token as if the insertion mode was "in body". */
+ $this->inBody($token);
+ }
+ }
+
+ private function inSelect($token) {
+ /* Handle the token as follows: */
+
+ /* A character token */
+ if($token['type'] === HTML5::CHARACTR) {
+ /* Append the token's character to the current node. */
+ $this->insertText($token['data']);
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the current node with the data
+ attribute set to the data given in the comment token. */
+ $this->insertComment($token['data']);
+
+ /* A start tag token whose tag name is "option" */
+ } elseif($token['type'] === HTML5::STARTTAG &&
+ $token['name'] === 'option') {
+ /* If the current node is an option element, act as if an end tag
+ with the tag name "option" had been seen. */
+ if(end($this->stack)->nodeName === 'option') {
+ $this->inSelect(array(
+ 'name' => 'option',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* A start tag token whose tag name is "optgroup" */
+ } elseif($token['type'] === HTML5::STARTTAG &&
+ $token['name'] === 'optgroup') {
+ /* If the current node is an option element, act as if an end tag
+ with the tag name "option" had been seen. */
+ if(end($this->stack)->nodeName === 'option') {
+ $this->inSelect(array(
+ 'name' => 'option',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* If the current node is an optgroup element, act as if an end tag
+ with the tag name "optgroup" had been seen. */
+ if(end($this->stack)->nodeName === 'optgroup') {
+ $this->inSelect(array(
+ 'name' => 'optgroup',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* An end tag token whose tag name is "optgroup" */
+ } elseif($token['type'] === HTML5::ENDTAG &&
+ $token['name'] === 'optgroup') {
+ /* First, if the current node is an option element, and the node
+ immediately before it in the stack of open elements is an optgroup
+ element, then act as if an end tag with the tag name "option" had
+ been seen. */
+ $elements_in_stack = count($this->stack);
+
+ if($this->stack[$elements_in_stack - 1]->nodeName === 'option' &&
+ $this->stack[$elements_in_stack - 2]->nodeName === 'optgroup') {
+ $this->inSelect(array(
+ 'name' => 'option',
+ 'type' => HTML5::ENDTAG
+ ));
+ }
+
+ /* If the current node is an optgroup element, then pop that node
+ from the stack of open elements. Otherwise, this is a parse error,
+ ignore the token. */
+ if($this->stack[$elements_in_stack - 1] === 'optgroup') {
+ array_pop($this->stack);
+ }
+
+ /* An end tag token whose tag name is "option" */
+ } elseif($token['type'] === HTML5::ENDTAG &&
+ $token['name'] === 'option') {
+ /* If the current node is an option element, then pop that node
+ from the stack of open elements. Otherwise, this is a parse error,
+ ignore the token. */
+ if(end($this->stack)->nodeName === 'option') {
+ array_pop($this->stack);
+ }
+
+ /* An end tag whose tag name is "select" */
+ } elseif($token['type'] === HTML5::ENDTAG &&
+ $token['name'] === 'select') {
+ /* If the stack of open elements does not have an element in table
+ scope with the same tag name as the token, this is a parse error.
+ Ignore the token. (innerHTML case) */
+ if(!$this->elementInScope($token['name'], true)) {
+ // w/e
+
+ /* Otherwise: */
+ } else {
+ /* Pop elements from the stack of open elements until a select
+ element has been popped from the stack. */
+ while(true) {
+ $current = end($this->stack)->nodeName;
+ array_pop($this->stack);
+
+ if($current === 'select') {
+ break;
+ }
+ }
+
+ /* Reset the insertion mode appropriately. */
+ $this->resetInsertionMode();
+ }
+
+ /* A start tag whose tag name is "select" */
+ } elseif($token['name'] === 'select' &&
+ $token['type'] === HTML5::STARTTAG) {
+ /* Parse error. Act as if the token had been an end tag with the
+ tag name "select" instead. */
+ $this->inSelect(array(
+ 'name' => 'select',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ /* An end tag whose tag name is one of: "caption", "table", "tbody",
+ "tfoot", "thead", "tr", "td", "th" */
+ } elseif(in_array($token['name'], array('caption', 'table', 'tbody',
+ 'tfoot', 'thead', 'tr', 'td', 'th')) && $token['type'] === HTML5::ENDTAG) {
+ /* Parse error. */
+ // w/e
+
+ /* If the stack of open elements has an element in table scope with
+ the same tag name as that of the token, then act as if an end tag
+ with the tag name "select" had been seen, and reprocess the token.
+ Otherwise, ignore the token. */
+ if($this->elementInScope($token['name'], true)) {
+ $this->inSelect(array(
+ 'name' => 'select',
+ 'type' => HTML5::ENDTAG
+ ));
+
+ $this->mainPhase($token);
+ }
+
+ /* Anything else */
+ } else {
+ /* Parse error. Ignore the token. */
+ }
+ }
+
+ private function afterBody($token) {
+ /* Handle the token as follows: */
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE */
+ if($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
+ /* Process the token as it would be processed if the insertion mode
+ was "in body". */
+ $this->inBody($token);
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the first element in the stack of open
+ elements (the html element), with the data attribute set to the
+ data given in the comment token. */
+ $comment = $this->dom->createComment($token['data']);
+ $this->stack[0]->appendChild($comment);
+
+ /* An end tag with the tag name "html" */
+ } elseif($token['type'] === HTML5::ENDTAG && $token['name'] === 'html') {
+ /* If the parser was originally created in order to handle the
+ setting of an element's innerHTML attribute, this is a parse error;
+ ignore the token. (The element will be an html element in this
+ case.) (innerHTML case) */
+
+ /* Otherwise, switch to the trailing end phase. */
+ $this->phase = self::END_PHASE;
+
+ /* Anything else */
+ } else {
+ /* Parse error. Set the insertion mode to "in body" and reprocess
+ the token. */
+ $this->mode = self::IN_BODY;
+ return $this->inBody($token);
+ }
+ }
+
+ private function inFrameset($token) {
+ /* Handle the token as follows: */
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ U+000D CARRIAGE RETURN (CR), or U+0020 SPACE */
+ if($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
+ /* Append the character to the current node. */
+ $this->insertText($token['data']);
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the current node with the data
+ attribute set to the data given in the comment token. */
+ $this->insertComment($token['data']);
+
+ /* A start tag with the tag name "frameset" */
+ } elseif($token['name'] === 'frameset' &&
+ $token['type'] === HTML5::STARTTAG) {
+ $this->insertElement($token);
+
+ /* An end tag with the tag name "frameset" */
+ } elseif($token['name'] === 'frameset' &&
+ $token['type'] === HTML5::ENDTAG) {
+ /* If the current node is the root html element, then this is a
+ parse error; ignore the token. (innerHTML case) */
+ if(end($this->stack)->nodeName === 'html') {
+ // Ignore
+
+ } else {
+ /* Otherwise, pop the current node from the stack of open
+ elements. */
+ array_pop($this->stack);
+
+ /* If the parser was not originally created in order to handle
+ the setting of an element's innerHTML attribute (innerHTML case),
+ and the current node is no longer a frameset element, then change
+ the insertion mode to "after frameset". */
+ $this->mode = self::AFTR_FRAME;
+ }
+
+ /* A start tag with the tag name "frame" */
+ } elseif($token['name'] === 'frame' &&
+ $token['type'] === HTML5::STARTTAG) {
+ /* Insert an HTML element for the token. */
+ $this->insertElement($token);
+
+ /* Immediately pop the current node off the stack of open elements. */
+ array_pop($this->stack);
+
+ /* A start tag with the tag name "noframes" */
+ } elseif($token['name'] === 'noframes' &&
+ $token['type'] === HTML5::STARTTAG) {
+ /* Process the token as if the insertion mode had been "in body". */
+ $this->inBody($token);
+
+ /* Anything else */
+ } else {
+ /* Parse error. Ignore the token. */
+ }
+ }
+
+ private function afterFrameset($token) {
+ /* Handle the token as follows: */
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ U+000D CARRIAGE RETURN (CR), or U+0020 SPACE */
+ if($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
+ /* Append the character to the current node. */
+ $this->insertText($token['data']);
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the current node with the data
+ attribute set to the data given in the comment token. */
+ $this->insertComment($token['data']);
+
+ /* An end tag with the tag name "html" */
+ } elseif($token['name'] === 'html' &&
+ $token['type'] === HTML5::ENDTAG) {
+ /* Switch to the trailing end phase. */
+ $this->phase = self::END_PHASE;
+
+ /* A start tag with the tag name "noframes" */
+ } elseif($token['name'] === 'noframes' &&
+ $token['type'] === HTML5::STARTTAG) {
+ /* Process the token as if the insertion mode had been "in body". */
+ $this->inBody($token);
+
+ /* Anything else */
+ } else {
+ /* Parse error. Ignore the token. */
+ }
+ }
+
+ private function trailingEndPhase($token) {
+ /* After the main phase, as each token is emitted from the tokenisation
+ stage, it must be processed as described in this section. */
+
+ /* A DOCTYPE token */
+ if($token['type'] === HTML5::DOCTYPE) {
+ // Parse error. Ignore the token.
+
+ /* A comment token */
+ } elseif($token['type'] === HTML5::COMMENT) {
+ /* Append a Comment node to the Document object with the data
+ attribute set to the data given in the comment token. */
+ $comment = $this->dom->createComment($token['data']);
+ $this->dom->appendChild($comment);
+
+ /* A character token that is one of one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE */
+ } elseif($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) {
+ /* Process the token as it would be processed in the main phase. */
+ $this->mainPhase($token);
+
+ /* A character token that is not one of U+0009 CHARACTER TABULATION,
+ U+000A LINE FEED (LF), U+000B LINE TABULATION, U+000C FORM FEED (FF),
+ or U+0020 SPACE. Or a start tag token. Or an end tag token. */
+ } elseif(($token['type'] === HTML5::CHARACTR &&
+ preg_match('/^[\t\n\x0b\x0c ]+$/', $token['data'])) ||
+ $token['type'] === HTML5::STARTTAG || $token['type'] === HTML5::ENDTAG) {
+ /* Parse error. Switch back to the main phase and reprocess the
+ token. */
+ $this->phase = self::MAIN_PHASE;
+ return $this->mainPhase($token);
+
+ /* An end-of-file token */
+ } elseif($token['type'] === HTML5::EOF) {
+ /* OMG DONE!! */
+ }
+ }
+
+ private function insertElement($token, $append = true, $check = false) {
+ // Proprietary workaround for libxml2's limitations with tag names
+ if ($check) {
+ // Slightly modified HTML5 tag-name modification,
+ // removing anything that's not an ASCII letter, digit, or hyphen
+ $token['name'] = preg_replace('/[^a-z0-9-]/i', '', $token['name']);
+ // Remove leading hyphens and numbers
+ $token['name'] = ltrim($token['name'], '-0..9');
+ // In theory, this should ever be needed, but just in case
+ if ($token['name'] === '') $token['name'] = 'span'; // arbitrary generic choice
+ }
+
+ $el = $this->dom->createElement($token['name']);
+
+ foreach($token['attr'] as $attr) {
+ if(!$el->hasAttribute($attr['name'])) {
+ $el->setAttribute($attr['name'], $attr['value']);
+ }
+ }
+
+ $this->appendToRealParent($el);
+ $this->stack[] = $el;
+
+ return $el;
+ }
+
+ private function insertText($data) {
+ $text = $this->dom->createTextNode($data);
+ $this->appendToRealParent($text);
+ }
+
+ private function insertComment($data) {
+ $comment = $this->dom->createComment($data);
+ $this->appendToRealParent($comment);
+ }
+
+ private function appendToRealParent($node) {
+ if($this->foster_parent === null) {
+ end($this->stack)->appendChild($node);
+
+ } elseif($this->foster_parent !== null) {
+ /* If the foster parent element is the parent element of the
+ last table element in the stack of open elements, then the new
+ node must be inserted immediately before the last table element
+ in the stack of open elements in the foster parent element;
+ otherwise, the new node must be appended to the foster parent
+ element. */
+ for($n = count($this->stack) - 1; $n >= 0; $n--) {
+ if($this->stack[$n]->nodeName === 'table' &&
+ $this->stack[$n]->parentNode !== null) {
+ $table = $this->stack[$n];
+ break;
+ }
+ }
+
+ if(isset($table) && $this->foster_parent->isSameNode($table->parentNode))
+ $this->foster_parent->insertBefore($node, $table);
+ else
+ $this->foster_parent->appendChild($node);
+
+ $this->foster_parent = null;
+ }
+ }
+
+ private function elementInScope($el, $table = false) {
+ if(is_array($el)) {
+ foreach($el as $element) {
+ if($this->elementInScope($element, $table)) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ $leng = count($this->stack);
+
+ for($n = 0; $n < $leng; $n++) {
+ /* 1. Initialise node to be the current node (the bottommost node of
+ the stack). */
+ $node = $this->stack[$leng - 1 - $n];
+
+ if($node->tagName === $el) {
+ /* 2. If node is the target node, terminate in a match state. */
+ return true;
+
+ } elseif($node->tagName === 'table') {
+ /* 3. Otherwise, if node is a table element, terminate in a failure
+ state. */
+ return false;
+
+ } elseif($table === true && in_array($node->tagName, array('caption', 'td',
+ 'th', 'button', 'marquee', 'object'))) {
+ /* 4. Otherwise, if the algorithm is the "has an element in scope"
+ variant (rather than the "has an element in table scope" variant),
+ and node is one of the following, terminate in a failure state. */
+ return false;
+
+ } elseif($node === $node->ownerDocument->documentElement) {
+ /* 5. Otherwise, if node is an html element (root element), terminate
+ in a failure state. (This can only happen if the node is the topmost
+ node of the stack of open elements, and prevents the next step from
+ being invoked if there are no more elements in the stack.) */
+ return false;
+ }
+
+ /* Otherwise, set node to the previous entry in the stack of open
+ elements and return to step 2. (This will never fail, since the loop
+ will always terminate in the previous step if the top of the stack
+ is reached.) */
+ }
+ }
+
+ private function reconstructActiveFormattingElements() {
+ /* 1. If there are no entries in the list of active formatting elements,
+ then there is nothing to reconstruct; stop this algorithm. */
+ $formatting_elements = count($this->a_formatting);
+
+ if($formatting_elements === 0) {
+ return false;
+ }
+
+ /* 3. Let entry be the last (most recently added) element in the list
+ of active formatting elements. */
+ $entry = end($this->a_formatting);
+
+ /* 2. If the last (most recently added) entry in the list of active
+ formatting elements is a marker, or if it is an element that is in the
+ stack of open elements, then there is nothing to reconstruct; stop this
+ algorithm. */
+ if($entry === self::MARKER || in_array($entry, $this->stack, true)) {
+ return false;
+ }
+
+ for($a = $formatting_elements - 1; $a >= 0; true) {
+ /* 4. If there are no entries before entry in the list of active
+ formatting elements, then jump to step 8. */
+ if($a === 0) {
+ $step_seven = false;
+ break;
+ }
+
+ /* 5. Let entry be the entry one earlier than entry in the list of
+ active formatting elements. */
+ $a--;
+ $entry = $this->a_formatting[$a];
+
+ /* 6. If entry is neither a marker nor an element that is also in
+ thetack of open elements, go to step 4. */
+ if($entry === self::MARKER || in_array($entry, $this->stack, true)) {
+ break;
+ }
+ }
+
+ while(true) {
+ /* 7. Let entry be the element one later than entry in the list of
+ active formatting elements. */
+ if(isset($step_seven) && $step_seven === true) {
+ $a++;
+ $entry = $this->a_formatting[$a];
+ }
+
+ /* 8. Perform a shallow clone of the element entry to obtain clone. */
+ $clone = $entry->cloneNode();
+
+ /* 9. Append clone to the current node and push it onto the stack
+ of open elements so that it is the new current node. */
+ end($this->stack)->appendChild($clone);
+ $this->stack[] = $clone;
+
+ /* 10. Replace the entry for entry in the list with an entry for
+ clone. */
+ $this->a_formatting[$a] = $clone;
+
+ /* 11. If the entry for clone in the list of active formatting
+ elements is not the last entry in the list, return to step 7. */
+ if(end($this->a_formatting) !== $clone) {
+ $step_seven = true;
+ } else {
+ break;
+ }
+ }
+ }
+
+ private function clearTheActiveFormattingElementsUpToTheLastMarker() {
+ /* When the steps below require the UA to clear the list of active
+ formatting elements up to the last marker, the UA must perform the
+ following steps: */
+
+ while(true) {
+ /* 1. Let entry be the last (most recently added) entry in the list
+ of active formatting elements. */
+ $entry = end($this->a_formatting);
+
+ /* 2. Remove entry from the list of active formatting elements. */
+ array_pop($this->a_formatting);
+
+ /* 3. If entry was a marker, then stop the algorithm at this point.
+ The list has been cleared up to the last marker. */
+ if($entry === self::MARKER) {
+ break;
+ }
+ }
+ }
+
+ private function generateImpliedEndTags($exclude = array()) {
+ /* When the steps below require the UA to generate implied end tags,
+ then, if the current node is a dd element, a dt element, an li element,
+ a p element, a td element, a th element, or a tr element, the UA must
+ act as if an end tag with the respective tag name had been seen and
+ then generate implied end tags again. */
+ $node = end($this->stack);
+ $elements = array_diff(array('dd', 'dt', 'li', 'p', 'td', 'th', 'tr'), $exclude);
+
+ while(in_array(end($this->stack)->nodeName, $elements)) {
+ array_pop($this->stack);
+ }
+ }
+
+ private function getElementCategory($node) {
+ $name = $node->tagName;
+ if(in_array($name, $this->special))
+ return self::SPECIAL;
+
+ elseif(in_array($name, $this->scoping))
+ return self::SCOPING;
+
+ elseif(in_array($name, $this->formatting))
+ return self::FORMATTING;
+
+ else
+ return self::PHRASING;
+ }
+
+ private function clearStackToTableContext($elements) {
+ /* When the steps above require the UA to clear the stack back to a
+ table context, it means that the UA must, while the current node is not
+ a table element or an html element, pop elements from the stack of open
+ elements. If this causes any elements to be popped from the stack, then
+ this is a parse error. */
+ while(true) {
+ $node = end($this->stack)->nodeName;
+
+ if(in_array($node, $elements)) {
+ break;
+ } else {
+ array_pop($this->stack);
+ }
+ }
+ }
+
+ private function resetInsertionMode() {
+ /* 1. Let last be false. */
+ $last = false;
+ $leng = count($this->stack);
+
+ for($n = $leng - 1; $n >= 0; $n--) {
+ /* 2. Let node be the last node in the stack of open elements. */
+ $node = $this->stack[$n];
+
+ /* 3. If node is the first node in the stack of open elements, then
+ set last to true. If the element whose innerHTML attribute is being
+ set is neither a td element nor a th element, then set node to the
+ element whose innerHTML attribute is being set. (innerHTML case) */
+ if($this->stack[0]->isSameNode($node)) {
+ $last = true;
+ }
+
+ /* 4. If node is a select element, then switch the insertion mode to
+ "in select" and abort these steps. (innerHTML case) */
+ if($node->nodeName === 'select') {
+ $this->mode = self::IN_SELECT;
+ break;
+
+ /* 5. If node is a td or th element, then switch the insertion mode
+ to "in cell" and abort these steps. */
+ } elseif($node->nodeName === 'td' || $node->nodeName === 'th') {
+ $this->mode = self::IN_CELL;
+ break;
+
+ /* 6. If node is a tr element, then switch the insertion mode to
+ "in row" and abort these steps. */
+ } elseif($node->nodeName === 'tr') {
+ $this->mode = self::IN_ROW;
+ break;
+
+ /* 7. If node is a tbody, thead, or tfoot element, then switch the
+ insertion mode to "in table body" and abort these steps. */
+ } elseif(in_array($node->nodeName, array('tbody', 'thead', 'tfoot'))) {
+ $this->mode = self::IN_TBODY;
+ break;
+
+ /* 8. If node is a caption element, then switch the insertion mode
+ to "in caption" and abort these steps. */
+ } elseif($node->nodeName === 'caption') {
+ $this->mode = self::IN_CAPTION;
+ break;
+
+ /* 9. If node is a colgroup element, then switch the insertion mode
+ to "in column group" and abort these steps. (innerHTML case) */
+ } elseif($node->nodeName === 'colgroup') {
+ $this->mode = self::IN_CGROUP;
+ break;
+
+ /* 10. If node is a table element, then switch the insertion mode
+ to "in table" and abort these steps. */
+ } elseif($node->nodeName === 'table') {
+ $this->mode = self::IN_TABLE;
+ break;
+
+ /* 11. If node is a head element, then switch the insertion mode
+ to "in body" ("in body"! not "in head"!) and abort these steps.
+ (innerHTML case) */
+ } elseif($node->nodeName === 'head') {
+ $this->mode = self::IN_BODY;
+ break;
+
+ /* 12. If node is a body element, then switch the insertion mode to
+ "in body" and abort these steps. */
+ } elseif($node->nodeName === 'body') {
+ $this->mode = self::IN_BODY;
+ break;
+
+ /* 13. If node is a frameset element, then switch the insertion
+ mode to "in frameset" and abort these steps. (innerHTML case) */
+ } elseif($node->nodeName === 'frameset') {
+ $this->mode = self::IN_FRAME;
+ break;
+
+ /* 14. If node is an html element, then: if the head element
+ pointer is null, switch the insertion mode to "before head",
+ otherwise, switch the insertion mode to "after head". In either
+ case, abort these steps. (innerHTML case) */
+ } elseif($node->nodeName === 'html') {
+ $this->mode = ($this->head_pointer === null)
+ ? self::BEFOR_HEAD
+ : self::AFTER_HEAD;
+
+ break;
+
+ /* 15. If last is true, then set the insertion mode to "in body"
+ and abort these steps. (innerHTML case) */
+ } elseif($last) {
+ $this->mode = self::IN_BODY;
+ break;
+ }
+ }
+ }
+
+ private function closeCell() {
+ /* If the stack of open elements has a td or th element in table scope,
+ then act as if an end tag token with that tag name had been seen. */
+ foreach(array('td', 'th') as $cell) {
+ if($this->elementInScope($cell, true)) {
+ $this->inCell(array(
+ 'name' => $cell,
+ 'type' => HTML5::ENDTAG
+ ));
+
+ break;
+ }
+ }
+ }
+
+ public function save() {
+ return $this->dom;
+ }
+}
+?>
--- /dev/null
+<?php
+
+/**
+ * Class that handles operations involving percent-encoding in URIs.
+ *
+ * @warning
+ * Be careful when reusing instances of PercentEncoder. The object
+ * you use for normalize() SHOULD NOT be used for encode(), or
+ * vice-versa.
+ */
+class HTMLPurifier_PercentEncoder
+{
+
+ /**
+ * Reserved characters to preserve when using encode().
+ */
+ protected $preserve = array();
+
+ /**
+ * String of characters that should be preserved while using encode().
+ */
+ public function __construct($preserve = false) {
+ // unreserved letters, ought to const-ify
+ for ($i = 48; $i <= 57; $i++) $this->preserve[$i] = true; // digits
+ for ($i = 65; $i <= 90; $i++) $this->preserve[$i] = true; // upper-case
+ for ($i = 97; $i <= 122; $i++) $this->preserve[$i] = true; // lower-case
+ $this->preserve[45] = true; // Dash -
+ $this->preserve[46] = true; // Period .
+ $this->preserve[95] = true; // Underscore _
+ $this->preserve[126]= true; // Tilde ~
+
+ // extra letters not to escape
+ if ($preserve !== false) {
+ for ($i = 0, $c = strlen($preserve); $i < $c; $i++) {
+ $this->preserve[ord($preserve[$i])] = true;
+ }
+ }
+ }
+
+ /**
+ * Our replacement for urlencode, it encodes all non-reserved characters,
+ * as well as any extra characters that were instructed to be preserved.
+ * @note
+ * Assumes that the string has already been normalized, making any
+ * and all percent escape sequences valid. Percents will not be
+ * re-escaped, regardless of their status in $preserve
+ * @param $string String to be encoded
+ * @return Encoded string.
+ */
+ public function encode($string) {
+ $ret = '';
+ for ($i = 0, $c = strlen($string); $i < $c; $i++) {
+ if ($string[$i] !== '%' && !isset($this->preserve[$int = ord($string[$i])]) ) {
+ $ret .= '%' . sprintf('%02X', $int);
+ } else {
+ $ret .= $string[$i];
+ }
+ }
+ return $ret;
+ }
+
+ /**
+ * Fix up percent-encoding by decoding unreserved characters and normalizing.
+ * @warning This function is affected by $preserve, even though the
+ * usual desired behavior is for this not to preserve those
+ * characters. Be careful when reusing instances of PercentEncoder!
+ * @param $string String to normalize
+ */
+ public function normalize($string) {
+ if ($string == '') return '';
+ $parts = explode('%', $string);
+ $ret = array_shift($parts);
+ foreach ($parts as $part) {
+ $length = strlen($part);
+ if ($length < 2) {
+ $ret .= '%25' . $part;
+ continue;
+ }
+ $encoding = substr($part, 0, 2);
+ $text = substr($part, 2);
+ if (!ctype_xdigit($encoding)) {
+ $ret .= '%25' . $part;
+ continue;
+ }
+ $int = hexdec($encoding);
+ if (isset($this->preserve[$int])) {
+ $ret .= chr($int) . $text;
+ continue;
+ }
+ $encoding = strtoupper($encoding);
+ $ret .= '%' . $encoding . $text;
+ }
+ return $ret;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// OUT OF DATE, NEEDS UPDATING!
+// USE XMLWRITER!
+
+class HTMLPurifier_Printer
+{
+
+ /**
+ * Instance of HTMLPurifier_Generator for HTML generation convenience funcs
+ */
+ protected $generator;
+
+ /**
+ * Instance of HTMLPurifier_Config, for easy access
+ */
+ protected $config;
+
+ /**
+ * Initialize $generator.
+ */
+ public function __construct() {
+ }
+
+ /**
+ * Give generator necessary configuration if possible
+ */
+ public function prepareGenerator($config) {
+ $all = $config->getAll();
+ $context = new HTMLPurifier_Context();
+ $this->generator = new HTMLPurifier_Generator($config, $context);
+ }
+
+ /**
+ * Main function that renders object or aspect of that object
+ * @note Parameters vary depending on printer
+ */
+ // function render() {}
+
+ /**
+ * Returns a start tag
+ * @param $tag Tag name
+ * @param $attr Attribute array
+ */
+ protected function start($tag, $attr = array()) {
+ return $this->generator->generateFromToken(
+ new HTMLPurifier_Token_Start($tag, $attr ? $attr : array())
+ );
+ }
+
+ /**
+ * Returns an end teg
+ * @param $tag Tag name
+ */
+ protected function end($tag) {
+ return $this->generator->generateFromToken(
+ new HTMLPurifier_Token_End($tag)
+ );
+ }
+
+ /**
+ * Prints a complete element with content inside
+ * @param $tag Tag name
+ * @param $contents Element contents
+ * @param $attr Tag attributes
+ * @param $escape Bool whether or not to escape contents
+ */
+ protected function element($tag, $contents, $attr = array(), $escape = true) {
+ return $this->start($tag, $attr) .
+ ($escape ? $this->escape($contents) : $contents) .
+ $this->end($tag);
+ }
+
+ protected function elementEmpty($tag, $attr = array()) {
+ return $this->generator->generateFromToken(
+ new HTMLPurifier_Token_Empty($tag, $attr)
+ );
+ }
+
+ protected function text($text) {
+ return $this->generator->generateFromToken(
+ new HTMLPurifier_Token_Text($text)
+ );
+ }
+
+ /**
+ * Prints a simple key/value row in a table.
+ * @param $name Key
+ * @param $value Value
+ */
+ protected function row($name, $value) {
+ if (is_bool($value)) $value = $value ? 'On' : 'Off';
+ return
+ $this->start('tr') . "\n" .
+ $this->element('th', $name) . "\n" .
+ $this->element('td', $value) . "\n" .
+ $this->end('tr')
+ ;
+ }
+
+ /**
+ * Escapes a string for HTML output.
+ * @param $string String to escape
+ */
+ protected function escape($string) {
+ $string = HTMLPurifier_Encoder::cleanUTF8($string);
+ $string = htmlspecialchars($string, ENT_COMPAT, 'UTF-8');
+ return $string;
+ }
+
+ /**
+ * Takes a list of strings and turns them into a single list
+ * @param $array List of strings
+ * @param $polite Bool whether or not to add an end before the last
+ */
+ protected function listify($array, $polite = false) {
+ if (empty($array)) return 'None';
+ $ret = '';
+ $i = count($array);
+ foreach ($array as $value) {
+ $i--;
+ $ret .= $value;
+ if ($i > 0 && !($polite && $i == 1)) $ret .= ', ';
+ if ($polite && $i == 1) $ret .= 'and ';
+ }
+ return $ret;
+ }
+
+ /**
+ * Retrieves the class of an object without prefixes, as well as metadata
+ * @param $obj Object to determine class of
+ * @param $prefix Further prefix to remove
+ */
+ protected function getClass($obj, $sec_prefix = '') {
+ static $five = null;
+ if ($five === null) $five = version_compare(PHP_VERSION, '5', '>=');
+ $prefix = 'HTMLPurifier_' . $sec_prefix;
+ if (!$five) $prefix = strtolower($prefix);
+ $class = str_replace($prefix, '', get_class($obj));
+ $lclass = strtolower($class);
+ $class .= '(';
+ switch ($lclass) {
+ case 'enum':
+ $values = array();
+ foreach ($obj->valid_values as $value => $bool) {
+ $values[] = $value;
+ }
+ $class .= implode(', ', $values);
+ break;
+ case 'css_composite':
+ $values = array();
+ foreach ($obj->defs as $def) {
+ $values[] = $this->getClass($def, $sec_prefix);
+ }
+ $class .= implode(', ', $values);
+ break;
+ case 'css_multiple':
+ $class .= $this->getClass($obj->single, $sec_prefix) . ', ';
+ $class .= $obj->max;
+ break;
+ case 'css_denyelementdecorator':
+ $class .= $this->getClass($obj->def, $sec_prefix) . ', ';
+ $class .= $obj->element;
+ break;
+ case 'css_importantdecorator':
+ $class .= $this->getClass($obj->def, $sec_prefix);
+ if ($obj->allow) $class .= ', !important';
+ break;
+ }
+ $class .= ')';
+ return $class;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_Printer_CSSDefinition extends HTMLPurifier_Printer
+{
+
+ protected $def;
+
+ public function render($config) {
+ $this->def = $config->getCSSDefinition();
+ $ret = '';
+
+ $ret .= $this->start('div', array('class' => 'HTMLPurifier_Printer'));
+ $ret .= $this->start('table');
+
+ $ret .= $this->element('caption', 'Properties ($info)');
+
+ $ret .= $this->start('thead');
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Property', array('class' => 'heavy'));
+ $ret .= $this->element('th', 'Definition', array('class' => 'heavy', 'style' => 'width:auto;'));
+ $ret .= $this->end('tr');
+ $ret .= $this->end('thead');
+
+ ksort($this->def->info);
+ foreach ($this->def->info as $property => $obj) {
+ $name = $this->getClass($obj, 'AttrDef_');
+ $ret .= $this->row($property, $name);
+ }
+
+ $ret .= $this->end('table');
+ $ret .= $this->end('div');
+
+ return $ret;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+
+.hp-config {}
+
+.hp-config tbody th {text-align:right; padding-right:0.5em;}
+.hp-config thead, .hp-config .namespace {background:#3C578C; color:#FFF;}
+.hp-config .namespace th {text-align:center;}
+.hp-config .verbose {display:none;}
+.hp-config .controls {text-align:center;}
+
+/* vim: et sw=4 sts=4 */
--- /dev/null
+function toggleWriteability(id_of_patient, checked) {
+ document.getElementById(id_of_patient).disabled = checked;
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * @todo Rewrite to use Interchange objects
+ */
+class HTMLPurifier_Printer_ConfigForm extends HTMLPurifier_Printer
+{
+
+ /**
+ * Printers for specific fields
+ */
+ protected $fields = array();
+
+ /**
+ * Documentation URL, can have fragment tagged on end
+ */
+ protected $docURL;
+
+ /**
+ * Name of form element to stuff config in
+ */
+ protected $name;
+
+ /**
+ * Whether or not to compress directive names, clipping them off
+ * after a certain amount of letters. False to disable or integer letters
+ * before clipping.
+ */
+ protected $compress = false;
+
+ /**
+ * @param $name Form element name for directives to be stuffed into
+ * @param $doc_url String documentation URL, will have fragment tagged on
+ * @param $compress Integer max length before compressing a directive name, set to false to turn off
+ */
+ public function __construct(
+ $name, $doc_url = null, $compress = false
+ ) {
+ parent::__construct();
+ $this->docURL = $doc_url;
+ $this->name = $name;
+ $this->compress = $compress;
+ // initialize sub-printers
+ $this->fields[0] = new HTMLPurifier_Printer_ConfigForm_default();
+ $this->fields[HTMLPurifier_VarParser::BOOL] = new HTMLPurifier_Printer_ConfigForm_bool();
+ }
+
+ /**
+ * Sets default column and row size for textareas in sub-printers
+ * @param $cols Integer columns of textarea, null to use default
+ * @param $rows Integer rows of textarea, null to use default
+ */
+ public function setTextareaDimensions($cols = null, $rows = null) {
+ if ($cols) $this->fields['default']->cols = $cols;
+ if ($rows) $this->fields['default']->rows = $rows;
+ }
+
+ /**
+ * Retrieves styling, in case it is not accessible by webserver
+ */
+ public static function getCSS() {
+ return file_get_contents(HTMLPURIFIER_PREFIX . '/HTMLPurifier/Printer/ConfigForm.css');
+ }
+
+ /**
+ * Retrieves JavaScript, in case it is not accessible by webserver
+ */
+ public static function getJavaScript() {
+ return file_get_contents(HTMLPURIFIER_PREFIX . '/HTMLPurifier/Printer/ConfigForm.js');
+ }
+
+ /**
+ * Returns HTML output for a configuration form
+ * @param $config Configuration object of current form state, or an array
+ * where [0] has an HTML namespace and [1] is being rendered.
+ * @param $allowed Optional namespace(s) and directives to restrict form to.
+ */
+ public function render($config, $allowed = true, $render_controls = true) {
+ if (is_array($config) && isset($config[0])) {
+ $gen_config = $config[0];
+ $config = $config[1];
+ } else {
+ $gen_config = $config;
+ }
+
+ $this->config = $config;
+ $this->genConfig = $gen_config;
+ $this->prepareGenerator($gen_config);
+
+ $allowed = HTMLPurifier_Config::getAllowedDirectivesForForm($allowed, $config->def);
+ $all = array();
+ foreach ($allowed as $key) {
+ list($ns, $directive) = $key;
+ $all[$ns][$directive] = $config->get($ns .'.'. $directive);
+ }
+
+ $ret = '';
+ $ret .= $this->start('table', array('class' => 'hp-config'));
+ $ret .= $this->start('thead');
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Directive', array('class' => 'hp-directive'));
+ $ret .= $this->element('th', 'Value', array('class' => 'hp-value'));
+ $ret .= $this->end('tr');
+ $ret .= $this->end('thead');
+ foreach ($all as $ns => $directives) {
+ $ret .= $this->renderNamespace($ns, $directives);
+ }
+ if ($render_controls) {
+ $ret .= $this->start('tbody');
+ $ret .= $this->start('tr');
+ $ret .= $this->start('td', array('colspan' => 2, 'class' => 'controls'));
+ $ret .= $this->elementEmpty('input', array('type' => 'submit', 'value' => 'Submit'));
+ $ret .= '[<a href="?">Reset</a>]';
+ $ret .= $this->end('td');
+ $ret .= $this->end('tr');
+ $ret .= $this->end('tbody');
+ }
+ $ret .= $this->end('table');
+ return $ret;
+ }
+
+ /**
+ * Renders a single namespace
+ * @param $ns String namespace name
+ * @param $directive Associative array of directives to values
+ */
+ protected function renderNamespace($ns, $directives) {
+ $ret = '';
+ $ret .= $this->start('tbody', array('class' => 'namespace'));
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', $ns, array('colspan' => 2));
+ $ret .= $this->end('tr');
+ $ret .= $this->end('tbody');
+ $ret .= $this->start('tbody');
+ foreach ($directives as $directive => $value) {
+ $ret .= $this->start('tr');
+ $ret .= $this->start('th');
+ if ($this->docURL) {
+ $url = str_replace('%s', urlencode("$ns.$directive"), $this->docURL);
+ $ret .= $this->start('a', array('href' => $url));
+ }
+ $attr = array('for' => "{$this->name}:$ns.$directive");
+
+ // crop directive name if it's too long
+ if (!$this->compress || (strlen($directive) < $this->compress)) {
+ $directive_disp = $directive;
+ } else {
+ $directive_disp = substr($directive, 0, $this->compress - 2) . '...';
+ $attr['title'] = $directive;
+ }
+
+ $ret .= $this->element(
+ 'label',
+ $directive_disp,
+ // component printers must create an element with this id
+ $attr
+ );
+ if ($this->docURL) $ret .= $this->end('a');
+ $ret .= $this->end('th');
+
+ $ret .= $this->start('td');
+ $def = $this->config->def->info["$ns.$directive"];
+ if (is_int($def)) {
+ $allow_null = $def < 0;
+ $type = abs($def);
+ } else {
+ $type = $def->type;
+ $allow_null = isset($def->allow_null);
+ }
+ if (!isset($this->fields[$type])) $type = 0; // default
+ $type_obj = $this->fields[$type];
+ if ($allow_null) {
+ $type_obj = new HTMLPurifier_Printer_ConfigForm_NullDecorator($type_obj);
+ }
+ $ret .= $type_obj->render($ns, $directive, $value, $this->name, array($this->genConfig, $this->config));
+ $ret .= $this->end('td');
+ $ret .= $this->end('tr');
+ }
+ $ret .= $this->end('tbody');
+ return $ret;
+ }
+
+}
+
+/**
+ * Printer decorator for directives that accept null
+ */
+class HTMLPurifier_Printer_ConfigForm_NullDecorator extends HTMLPurifier_Printer {
+ /**
+ * Printer being decorated
+ */
+ protected $obj;
+ /**
+ * @param $obj Printer to decorate
+ */
+ public function __construct($obj) {
+ parent::__construct();
+ $this->obj = $obj;
+ }
+ public function render($ns, $directive, $value, $name, $config) {
+ if (is_array($config) && isset($config[0])) {
+ $gen_config = $config[0];
+ $config = $config[1];
+ } else {
+ $gen_config = $config;
+ }
+ $this->prepareGenerator($gen_config);
+
+ $ret = '';
+ $ret .= $this->start('label', array('for' => "$name:Null_$ns.$directive"));
+ $ret .= $this->element('span', "$ns.$directive:", array('class' => 'verbose'));
+ $ret .= $this->text(' Null/Disabled');
+ $ret .= $this->end('label');
+ $attr = array(
+ 'type' => 'checkbox',
+ 'value' => '1',
+ 'class' => 'null-toggle',
+ 'name' => "$name"."[Null_$ns.$directive]",
+ 'id' => "$name:Null_$ns.$directive",
+ 'onclick' => "toggleWriteability('$name:$ns.$directive',checked)" // INLINE JAVASCRIPT!!!!
+ );
+ if ($this->obj instanceof HTMLPurifier_Printer_ConfigForm_bool) {
+ // modify inline javascript slightly
+ $attr['onclick'] = "toggleWriteability('$name:Yes_$ns.$directive',checked);toggleWriteability('$name:No_$ns.$directive',checked)";
+ }
+ if ($value === null) $attr['checked'] = 'checked';
+ $ret .= $this->elementEmpty('input', $attr);
+ $ret .= $this->text(' or ');
+ $ret .= $this->elementEmpty('br');
+ $ret .= $this->obj->render($ns, $directive, $value, $name, array($gen_config, $config));
+ return $ret;
+ }
+}
+
+/**
+ * Swiss-army knife configuration form field printer
+ */
+class HTMLPurifier_Printer_ConfigForm_default extends HTMLPurifier_Printer {
+ public $cols = 18;
+ public $rows = 5;
+ public function render($ns, $directive, $value, $name, $config) {
+ if (is_array($config) && isset($config[0])) {
+ $gen_config = $config[0];
+ $config = $config[1];
+ } else {
+ $gen_config = $config;
+ }
+ $this->prepareGenerator($gen_config);
+ // this should probably be split up a little
+ $ret = '';
+ $def = $config->def->info["$ns.$directive"];
+ if (is_int($def)) {
+ $type = abs($def);
+ } else {
+ $type = $def->type;
+ }
+ if (is_array($value)) {
+ switch ($type) {
+ case HTMLPurifier_VarParser::LOOKUP:
+ $array = $value;
+ $value = array();
+ foreach ($array as $val => $b) {
+ $value[] = $val;
+ }
+ case HTMLPurifier_VarParser::ALIST:
+ $value = implode(PHP_EOL, $value);
+ break;
+ case HTMLPurifier_VarParser::HASH:
+ $nvalue = '';
+ foreach ($value as $i => $v) {
+ $nvalue .= "$i:$v" . PHP_EOL;
+ }
+ $value = $nvalue;
+ break;
+ default:
+ $value = '';
+ }
+ }
+ if ($type === HTMLPurifier_VarParser::MIXED) {
+ return 'Not supported';
+ $value = serialize($value);
+ }
+ $attr = array(
+ 'name' => "$name"."[$ns.$directive]",
+ 'id' => "$name:$ns.$directive"
+ );
+ if ($value === null) $attr['disabled'] = 'disabled';
+ if (isset($def->allowed)) {
+ $ret .= $this->start('select', $attr);
+ foreach ($def->allowed as $val => $b) {
+ $attr = array();
+ if ($value == $val) $attr['selected'] = 'selected';
+ $ret .= $this->element('option', $val, $attr);
+ }
+ $ret .= $this->end('select');
+ } elseif (
+ $type === HTMLPurifier_VarParser::TEXT ||
+ $type === HTMLPurifier_VarParser::ITEXT ||
+ $type === HTMLPurifier_VarParser::ALIST ||
+ $type === HTMLPurifier_VarParser::HASH ||
+ $type === HTMLPurifier_VarParser::LOOKUP
+ ) {
+ $attr['cols'] = $this->cols;
+ $attr['rows'] = $this->rows;
+ $ret .= $this->start('textarea', $attr);
+ $ret .= $this->text($value);
+ $ret .= $this->end('textarea');
+ } else {
+ $attr['value'] = $value;
+ $attr['type'] = 'text';
+ $ret .= $this->elementEmpty('input', $attr);
+ }
+ return $ret;
+ }
+}
+
+/**
+ * Bool form field printer
+ */
+class HTMLPurifier_Printer_ConfigForm_bool extends HTMLPurifier_Printer {
+ public function render($ns, $directive, $value, $name, $config) {
+ if (is_array($config) && isset($config[0])) {
+ $gen_config = $config[0];
+ $config = $config[1];
+ } else {
+ $gen_config = $config;
+ }
+ $this->prepareGenerator($gen_config);
+ $ret = '';
+ $ret .= $this->start('div', array('id' => "$name:$ns.$directive"));
+
+ $ret .= $this->start('label', array('for' => "$name:Yes_$ns.$directive"));
+ $ret .= $this->element('span', "$ns.$directive:", array('class' => 'verbose'));
+ $ret .= $this->text(' Yes');
+ $ret .= $this->end('label');
+
+ $attr = array(
+ 'type' => 'radio',
+ 'name' => "$name"."[$ns.$directive]",
+ 'id' => "$name:Yes_$ns.$directive",
+ 'value' => '1'
+ );
+ if ($value === true) $attr['checked'] = 'checked';
+ if ($value === null) $attr['disabled'] = 'disabled';
+ $ret .= $this->elementEmpty('input', $attr);
+
+ $ret .= $this->start('label', array('for' => "$name:No_$ns.$directive"));
+ $ret .= $this->element('span', "$ns.$directive:", array('class' => 'verbose'));
+ $ret .= $this->text(' No');
+ $ret .= $this->end('label');
+
+ $attr = array(
+ 'type' => 'radio',
+ 'name' => "$name"."[$ns.$directive]",
+ 'id' => "$name:No_$ns.$directive",
+ 'value' => '0'
+ );
+ if ($value === false) $attr['checked'] = 'checked';
+ if ($value === null) $attr['disabled'] = 'disabled';
+ $ret .= $this->elementEmpty('input', $attr);
+
+ $ret .= $this->end('div');
+
+ return $ret;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_Printer_HTMLDefinition extends HTMLPurifier_Printer
+{
+
+ /**
+ * Instance of HTMLPurifier_HTMLDefinition, for easy access
+ */
+ protected $def;
+
+ public function render($config) {
+ $ret = '';
+ $this->config =& $config;
+
+ $this->def = $config->getHTMLDefinition();
+
+ $ret .= $this->start('div', array('class' => 'HTMLPurifier_Printer'));
+
+ $ret .= $this->renderDoctype();
+ $ret .= $this->renderEnvironment();
+ $ret .= $this->renderContentSets();
+ $ret .= $this->renderInfo();
+
+ $ret .= $this->end('div');
+
+ return $ret;
+ }
+
+ /**
+ * Renders the Doctype table
+ */
+ protected function renderDoctype() {
+ $doctype = $this->def->doctype;
+ $ret = '';
+ $ret .= $this->start('table');
+ $ret .= $this->element('caption', 'Doctype');
+ $ret .= $this->row('Name', $doctype->name);
+ $ret .= $this->row('XML', $doctype->xml ? 'Yes' : 'No');
+ $ret .= $this->row('Default Modules', implode($doctype->modules, ', '));
+ $ret .= $this->row('Default Tidy Modules', implode($doctype->tidyModules, ', '));
+ $ret .= $this->end('table');
+ return $ret;
+ }
+
+
+ /**
+ * Renders environment table, which is miscellaneous info
+ */
+ protected function renderEnvironment() {
+ $def = $this->def;
+
+ $ret = '';
+
+ $ret .= $this->start('table');
+ $ret .= $this->element('caption', 'Environment');
+
+ $ret .= $this->row('Parent of fragment', $def->info_parent);
+ $ret .= $this->renderChildren($def->info_parent_def->child);
+ $ret .= $this->row('Block wrap name', $def->info_block_wrapper);
+
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Global attributes');
+ $ret .= $this->element('td', $this->listifyAttr($def->info_global_attr),0,0);
+ $ret .= $this->end('tr');
+
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Tag transforms');
+ $list = array();
+ foreach ($def->info_tag_transform as $old => $new) {
+ $new = $this->getClass($new, 'TagTransform_');
+ $list[] = "<$old> with $new";
+ }
+ $ret .= $this->element('td', $this->listify($list));
+ $ret .= $this->end('tr');
+
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Pre-AttrTransform');
+ $ret .= $this->element('td', $this->listifyObjectList($def->info_attr_transform_pre));
+ $ret .= $this->end('tr');
+
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Post-AttrTransform');
+ $ret .= $this->element('td', $this->listifyObjectList($def->info_attr_transform_post));
+ $ret .= $this->end('tr');
+
+ $ret .= $this->end('table');
+ return $ret;
+ }
+
+ /**
+ * Renders the Content Sets table
+ */
+ protected function renderContentSets() {
+ $ret = '';
+ $ret .= $this->start('table');
+ $ret .= $this->element('caption', 'Content Sets');
+ foreach ($this->def->info_content_sets as $name => $lookup) {
+ $ret .= $this->heavyHeader($name);
+ $ret .= $this->start('tr');
+ $ret .= $this->element('td', $this->listifyTagLookup($lookup));
+ $ret .= $this->end('tr');
+ }
+ $ret .= $this->end('table');
+ return $ret;
+ }
+
+ /**
+ * Renders the Elements ($info) table
+ */
+ protected function renderInfo() {
+ $ret = '';
+ $ret .= $this->start('table');
+ $ret .= $this->element('caption', 'Elements ($info)');
+ ksort($this->def->info);
+ $ret .= $this->heavyHeader('Allowed tags', 2);
+ $ret .= $this->start('tr');
+ $ret .= $this->element('td', $this->listifyTagLookup($this->def->info), array('colspan' => 2));
+ $ret .= $this->end('tr');
+ foreach ($this->def->info as $name => $def) {
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', "<$name>", array('class'=>'heavy', 'colspan' => 2));
+ $ret .= $this->end('tr');
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Inline content');
+ $ret .= $this->element('td', $def->descendants_are_inline ? 'Yes' : 'No');
+ $ret .= $this->end('tr');
+ if (!empty($def->excludes)) {
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Excludes');
+ $ret .= $this->element('td', $this->listifyTagLookup($def->excludes));
+ $ret .= $this->end('tr');
+ }
+ if (!empty($def->attr_transform_pre)) {
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Pre-AttrTransform');
+ $ret .= $this->element('td', $this->listifyObjectList($def->attr_transform_pre));
+ $ret .= $this->end('tr');
+ }
+ if (!empty($def->attr_transform_post)) {
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Post-AttrTransform');
+ $ret .= $this->element('td', $this->listifyObjectList($def->attr_transform_post));
+ $ret .= $this->end('tr');
+ }
+ if (!empty($def->auto_close)) {
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Auto closed by');
+ $ret .= $this->element('td', $this->listifyTagLookup($def->auto_close));
+ $ret .= $this->end('tr');
+ }
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', 'Allowed attributes');
+ $ret .= $this->element('td',$this->listifyAttr($def->attr), array(), 0);
+ $ret .= $this->end('tr');
+
+ if (!empty($def->required_attr)) {
+ $ret .= $this->row('Required attributes', $this->listify($def->required_attr));
+ }
+
+ $ret .= $this->renderChildren($def->child);
+ }
+ $ret .= $this->end('table');
+ return $ret;
+ }
+
+ /**
+ * Renders a row describing the allowed children of an element
+ * @param $def HTMLPurifier_ChildDef of pertinent element
+ */
+ protected function renderChildren($def) {
+ $context = new HTMLPurifier_Context();
+ $ret = '';
+ $ret .= $this->start('tr');
+ $elements = array();
+ $attr = array();
+ if (isset($def->elements)) {
+ if ($def->type == 'strictblockquote') {
+ $def->validateChildren(array(), $this->config, $context);
+ }
+ $elements = $def->elements;
+ }
+ if ($def->type == 'chameleon') {
+ $attr['rowspan'] = 2;
+ } elseif ($def->type == 'empty') {
+ $elements = array();
+ } elseif ($def->type == 'table') {
+ $elements = array_flip(array('col', 'caption', 'colgroup', 'thead',
+ 'tfoot', 'tbody', 'tr'));
+ }
+ $ret .= $this->element('th', 'Allowed children', $attr);
+
+ if ($def->type == 'chameleon') {
+
+ $ret .= $this->element('td',
+ '<em>Block</em>: ' .
+ $this->escape($this->listifyTagLookup($def->block->elements)),0,0);
+ $ret .= $this->end('tr');
+ $ret .= $this->start('tr');
+ $ret .= $this->element('td',
+ '<em>Inline</em>: ' .
+ $this->escape($this->listifyTagLookup($def->inline->elements)),0,0);
+
+ } elseif ($def->type == 'custom') {
+
+ $ret .= $this->element('td', '<em>'.ucfirst($def->type).'</em>: ' .
+ $def->dtd_regex);
+
+ } else {
+ $ret .= $this->element('td',
+ '<em>'.ucfirst($def->type).'</em>: ' .
+ $this->escape($this->listifyTagLookup($elements)),0,0);
+ }
+ $ret .= $this->end('tr');
+ return $ret;
+ }
+
+ /**
+ * Listifies a tag lookup table.
+ * @param $array Tag lookup array in form of array('tagname' => true)
+ */
+ protected function listifyTagLookup($array) {
+ ksort($array);
+ $list = array();
+ foreach ($array as $name => $discard) {
+ if ($name !== '#PCDATA' && !isset($this->def->info[$name])) continue;
+ $list[] = $name;
+ }
+ return $this->listify($list);
+ }
+
+ /**
+ * Listifies a list of objects by retrieving class names and internal state
+ * @param $array List of objects
+ * @todo Also add information about internal state
+ */
+ protected function listifyObjectList($array) {
+ ksort($array);
+ $list = array();
+ foreach ($array as $discard => $obj) {
+ $list[] = $this->getClass($obj, 'AttrTransform_');
+ }
+ return $this->listify($list);
+ }
+
+ /**
+ * Listifies a hash of attributes to AttrDef classes
+ * @param $array Array hash in form of array('attrname' => HTMLPurifier_AttrDef)
+ */
+ protected function listifyAttr($array) {
+ ksort($array);
+ $list = array();
+ foreach ($array as $name => $obj) {
+ if ($obj === false) continue;
+ $list[] = "$name = <i>" . $this->getClass($obj, 'AttrDef_') . '</i>';
+ }
+ return $this->listify($list);
+ }
+
+ /**
+ * Creates a heavy header row
+ */
+ protected function heavyHeader($text, $num = 1) {
+ $ret = '';
+ $ret .= $this->start('tr');
+ $ret .= $this->element('th', $text, array('colspan' => $num, 'class' => 'heavy'));
+ $ret .= $this->end('tr');
+ return $ret;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Generic property list implementation
+ */
+class HTMLPurifier_PropertyList
+{
+ /**
+ * Internal data-structure for properties
+ */
+ protected $data = array();
+
+ /**
+ * Parent plist
+ */
+ protected $parent;
+
+ protected $cache;
+
+ public function __construct($parent = null) {
+ $this->parent = $parent;
+ }
+
+ /**
+ * Recursively retrieves the value for a key
+ */
+ public function get($name) {
+ if ($this->has($name)) return $this->data[$name];
+ // possible performance bottleneck, convert to iterative if necessary
+ if ($this->parent) return $this->parent->get($name);
+ throw new HTMLPurifier_Exception("Key '$name' not found");
+ }
+
+ /**
+ * Sets the value of a key, for this plist
+ */
+ public function set($name, $value) {
+ $this->data[$name] = $value;
+ }
+
+ /**
+ * Returns true if a given key exists
+ */
+ public function has($name) {
+ return array_key_exists($name, $this->data);
+ }
+
+ /**
+ * Resets a value to the value of it's parent, usually the default. If
+ * no value is specified, the entire plist is reset.
+ */
+ public function reset($name = null) {
+ if ($name == null) $this->data = array();
+ else unset($this->data[$name]);
+ }
+
+ /**
+ * Squashes this property list and all of its property lists into a single
+ * array, and returns the array. This value is cached by default.
+ * @param $force If true, ignores the cache and regenerates the array.
+ */
+ public function squash($force = false) {
+ if ($this->cache !== null && !$force) return $this->cache;
+ if ($this->parent) {
+ return $this->cache = array_merge($this->parent->squash($force), $this->data);
+ } else {
+ return $this->cache = $this->data;
+ }
+ }
+
+ /**
+ * Returns the parent plist.
+ */
+ public function getParent() {
+ return $this->parent;
+ }
+
+ /**
+ * Sets the parent plist.
+ */
+ public function setParent($plist) {
+ $this->parent = $plist;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Property list iterator. Do not instantiate this class directly.
+ */
+class HTMLPurifier_PropertyListIterator extends FilterIterator
+{
+
+ protected $l;
+ protected $filter;
+
+ /**
+ * @param $data Array of data to iterate over
+ * @param $filter Optional prefix to only allow values of
+ */
+ public function __construct(Iterator $iterator, $filter = null) {
+ parent::__construct($iterator);
+ $this->l = strlen($filter);
+ $this->filter = $filter;
+ }
+
+ public function accept() {
+ $key = $this->getInnerIterator()->key();
+ if( strncmp($key, $this->filter, $this->l) !== 0 ) {
+ return false;
+ }
+ return true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Supertype for classes that define a strategy for modifying/purifying tokens.
+ *
+ * While HTMLPurifier's core purpose is fixing HTML into something proper,
+ * strategies provide plug points for extra configuration or even extra
+ * features, such as custom tags, custom parsing of text, etc.
+ */
+
+
+abstract class HTMLPurifier_Strategy
+{
+
+ /**
+ * Executes the strategy on the tokens.
+ *
+ * @param $tokens Array of HTMLPurifier_Token objects to be operated on.
+ * @param $config Configuration options
+ * @returns Processed array of token objects.
+ */
+ abstract public function execute($tokens, $config, $context);
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Composite strategy that runs multiple strategies on tokens.
+ */
+abstract class HTMLPurifier_Strategy_Composite extends HTMLPurifier_Strategy
+{
+
+ /**
+ * List of strategies to run tokens through.
+ */
+ protected $strategies = array();
+
+ abstract public function __construct();
+
+ public function execute($tokens, $config, $context) {
+ foreach ($this->strategies as $strategy) {
+ $tokens = $strategy->execute($tokens, $config, $context);
+ }
+ return $tokens;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Core strategy composed of the big four strategies.
+ */
+class HTMLPurifier_Strategy_Core extends HTMLPurifier_Strategy_Composite
+{
+
+ public function __construct() {
+ $this->strategies[] = new HTMLPurifier_Strategy_RemoveForeignElements();
+ $this->strategies[] = new HTMLPurifier_Strategy_MakeWellFormed();
+ $this->strategies[] = new HTMLPurifier_Strategy_FixNesting();
+ $this->strategies[] = new HTMLPurifier_Strategy_ValidateAttributes();
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Takes a well formed list of tokens and fixes their nesting.
+ *
+ * HTML elements dictate which elements are allowed to be their children,
+ * for example, you can't have a p tag in a span tag. Other elements have
+ * much more rigorous definitions: tables, for instance, require a specific
+ * order for their elements. There are also constraints not expressible by
+ * document type definitions, such as the chameleon nature of ins/del
+ * tags and global child exclusions.
+ *
+ * The first major objective of this strategy is to iterate through all the
+ * nodes (not tokens) of the list of tokens and determine whether or not
+ * their children conform to the element's definition. If they do not, the
+ * child definition may optionally supply an amended list of elements that
+ * is valid or require that the entire node be deleted (and the previous
+ * node rescanned).
+ *
+ * The second objective is to ensure that explicitly excluded elements of
+ * an element do not appear in its children. Code that accomplishes this
+ * task is pervasive through the strategy, though the two are distinct tasks
+ * and could, theoretically, be seperated (although it's not recommended).
+ *
+ * @note Whether or not unrecognized children are silently dropped or
+ * translated into text depends on the child definitions.
+ *
+ * @todo Enable nodes to be bubbled out of the structure.
+ */
+
+class HTMLPurifier_Strategy_FixNesting extends HTMLPurifier_Strategy
+{
+
+ public function execute($tokens, $config, $context) {
+ //####################################################################//
+ // Pre-processing
+
+ // get a copy of the HTML definition
+ $definition = $config->getHTMLDefinition();
+
+ // insert implicit "parent" node, will be removed at end.
+ // DEFINITION CALL
+ $parent_name = $definition->info_parent;
+ array_unshift($tokens, new HTMLPurifier_Token_Start($parent_name));
+ $tokens[] = new HTMLPurifier_Token_End($parent_name);
+
+ // setup the context variable 'IsInline', for chameleon processing
+ // is 'false' when we are not inline, 'true' when it must always
+ // be inline, and an integer when it is inline for a certain
+ // branch of the document tree
+ $is_inline = $definition->info_parent_def->descendants_are_inline;
+ $context->register('IsInline', $is_inline);
+
+ // setup error collector
+ $e =& $context->get('ErrorCollector', true);
+
+ //####################################################################//
+ // Loop initialization
+
+ // stack that contains the indexes of all parents,
+ // $stack[count($stack)-1] being the current parent
+ $stack = array();
+
+ // stack that contains all elements that are excluded
+ // it is organized by parent elements, similar to $stack,
+ // but it is only populated when an element with exclusions is
+ // processed, i.e. there won't be empty exclusions.
+ $exclude_stack = array();
+
+ // variable that contains the start token while we are processing
+ // nodes. This enables error reporting to do its job
+ $start_token = false;
+ $context->register('CurrentToken', $start_token);
+
+ //####################################################################//
+ // Loop
+
+ // iterate through all start nodes. Determining the start node
+ // is complicated so it has been omitted from the loop construct
+ for ($i = 0, $size = count($tokens) ; $i < $size; ) {
+
+ //################################################################//
+ // Gather information on children
+
+ // child token accumulator
+ $child_tokens = array();
+
+ // scroll to the end of this node, report number, and collect
+ // all children
+ for ($j = $i, $depth = 0; ; $j++) {
+ if ($tokens[$j] instanceof HTMLPurifier_Token_Start) {
+ $depth++;
+ // skip token assignment on first iteration, this is the
+ // token we currently are on
+ if ($depth == 1) continue;
+ } elseif ($tokens[$j] instanceof HTMLPurifier_Token_End) {
+ $depth--;
+ // skip token assignment on last iteration, this is the
+ // end token of the token we're currently on
+ if ($depth == 0) break;
+ }
+ $child_tokens[] = $tokens[$j];
+ }
+
+ // $i is index of start token
+ // $j is index of end token
+
+ $start_token = $tokens[$i]; // to make token available via CurrentToken
+
+ //################################################################//
+ // Gather information on parent
+
+ // calculate parent information
+ if ($count = count($stack)) {
+ $parent_index = $stack[$count-1];
+ $parent_name = $tokens[$parent_index]->name;
+ if ($parent_index == 0) {
+ $parent_def = $definition->info_parent_def;
+ } else {
+ $parent_def = $definition->info[$parent_name];
+ }
+ } else {
+ // processing as if the parent were the "root" node
+ // unknown info, it won't be used anyway, in the future,
+ // we may want to enforce one element only (this is
+ // necessary for HTML Purifier to clean entire documents
+ $parent_index = $parent_name = $parent_def = null;
+ }
+
+ // calculate context
+ if ($is_inline === false) {
+ // check if conditions make it inline
+ if (!empty($parent_def) && $parent_def->descendants_are_inline) {
+ $is_inline = $count - 1;
+ }
+ } else {
+ // check if we're out of inline
+ if ($count === $is_inline) {
+ $is_inline = false;
+ }
+ }
+
+ //################################################################//
+ // Determine whether element is explicitly excluded SGML-style
+
+ // determine whether or not element is excluded by checking all
+ // parent exclusions. The array should not be very large, two
+ // elements at most.
+ $excluded = false;
+ if (!empty($exclude_stack)) {
+ foreach ($exclude_stack as $lookup) {
+ if (isset($lookup[$tokens[$i]->name])) {
+ $excluded = true;
+ // no need to continue processing
+ break;
+ }
+ }
+ }
+
+ //################################################################//
+ // Perform child validation
+
+ if ($excluded) {
+ // there is an exclusion, remove the entire node
+ $result = false;
+ $excludes = array(); // not used, but good to initialize anyway
+ } else {
+ // DEFINITION CALL
+ if ($i === 0) {
+ // special processing for the first node
+ $def = $definition->info_parent_def;
+ } else {
+ $def = $definition->info[$tokens[$i]->name];
+
+ }
+
+ if (!empty($def->child)) {
+ // have DTD child def validate children
+ $result = $def->child->validateChildren(
+ $child_tokens, $config, $context);
+ } else {
+ // weird, no child definition, get rid of everything
+ $result = false;
+ }
+
+ // determine whether or not this element has any exclusions
+ $excludes = $def->excludes;
+ }
+
+ // $result is now a bool or array
+
+ //################################################################//
+ // Process result by interpreting $result
+
+ if ($result === true || $child_tokens === $result) {
+ // leave the node as is
+
+ // register start token as a parental node start
+ $stack[] = $i;
+
+ // register exclusions if there are any
+ if (!empty($excludes)) $exclude_stack[] = $excludes;
+
+ // move cursor to next possible start node
+ $i++;
+
+ } elseif($result === false) {
+ // remove entire node
+
+ if ($e) {
+ if ($excluded) {
+ $e->send(E_ERROR, 'Strategy_FixNesting: Node excluded');
+ } else {
+ $e->send(E_ERROR, 'Strategy_FixNesting: Node removed');
+ }
+ }
+
+ // calculate length of inner tokens and current tokens
+ $length = $j - $i + 1;
+
+ // perform removal
+ array_splice($tokens, $i, $length);
+
+ // update size
+ $size -= $length;
+
+ // there is no start token to register,
+ // current node is now the next possible start node
+ // unless it turns out that we need to do a double-check
+
+ // this is a rought heuristic that covers 100% of HTML's
+ // cases and 99% of all other cases. A child definition
+ // that would be tricked by this would be something like:
+ // ( | a b c) where it's all or nothing. Fortunately,
+ // our current implementation claims that that case would
+ // not allow empty, even if it did
+ if (!$parent_def->child->allow_empty) {
+ // we need to do a double-check
+ $i = $parent_index;
+ array_pop($stack);
+ }
+
+ // PROJECTED OPTIMIZATION: Process all children elements before
+ // reprocessing parent node.
+
+ } else {
+ // replace node with $result
+
+ // calculate length of inner tokens
+ $length = $j - $i - 1;
+
+ if ($e) {
+ if (empty($result) && $length) {
+ $e->send(E_ERROR, 'Strategy_FixNesting: Node contents removed');
+ } else {
+ $e->send(E_WARNING, 'Strategy_FixNesting: Node reorganized');
+ }
+ }
+
+ // perform replacement
+ array_splice($tokens, $i + 1, $length, $result);
+
+ // update size
+ $size -= $length;
+ $size += count($result);
+
+ // register start token as a parental node start
+ $stack[] = $i;
+
+ // register exclusions if there are any
+ if (!empty($excludes)) $exclude_stack[] = $excludes;
+
+ // move cursor to next possible start node
+ $i++;
+
+ }
+
+ //################################################################//
+ // Scroll to next start node
+
+ // We assume, at this point, that $i is the index of the token
+ // that is the first possible new start point for a node.
+
+ // Test if the token indeed is a start tag, if not, move forward
+ // and test again.
+ $size = count($tokens);
+ while ($i < $size and !$tokens[$i] instanceof HTMLPurifier_Token_Start) {
+ if ($tokens[$i] instanceof HTMLPurifier_Token_End) {
+ // pop a token index off the stack if we ended a node
+ array_pop($stack);
+ // pop an exclusion lookup off exclusion stack if
+ // we ended node and that node had exclusions
+ if ($i == 0 || $i == $size - 1) {
+ // use specialized var if it's the super-parent
+ $s_excludes = $definition->info_parent_def->excludes;
+ } else {
+ $s_excludes = $definition->info[$tokens[$i]->name]->excludes;
+ }
+ if ($s_excludes) {
+ array_pop($exclude_stack);
+ }
+ }
+ $i++;
+ }
+
+ }
+
+ //####################################################################//
+ // Post-processing
+
+ // remove implicit parent tokens at the beginning and end
+ array_shift($tokens);
+ array_pop($tokens);
+
+ // remove context variables
+ $context->destroy('IsInline');
+ $context->destroy('CurrentToken');
+
+ //####################################################################//
+ // Return
+
+ return $tokens;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Takes tokens makes them well-formed (balance end tags, etc.)
+ */
+class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
+{
+
+ /**
+ * Array stream of tokens being processed.
+ */
+ protected $tokens;
+
+ /**
+ * Current index in $tokens.
+ */
+ protected $t;
+
+ /**
+ * Current nesting of elements.
+ */
+ protected $stack;
+
+ /**
+ * Injectors active in this stream processing.
+ */
+ protected $injectors;
+
+ /**
+ * Current instance of HTMLPurifier_Config.
+ */
+ protected $config;
+
+ /**
+ * Current instance of HTMLPurifier_Context.
+ */
+ protected $context;
+
+ public function execute($tokens, $config, $context) {
+
+ $definition = $config->getHTMLDefinition();
+
+ // local variables
+ $generator = new HTMLPurifier_Generator($config, $context);
+ $escape_invalid_tags = $config->get('Core.EscapeInvalidTags');
+ $e = $context->get('ErrorCollector', true);
+ $t = false; // token index
+ $i = false; // injector index
+ $token = false; // the current token
+ $reprocess = false; // whether or not to reprocess the same token
+ $stack = array();
+
+ // member variables
+ $this->stack =& $stack;
+ $this->t =& $t;
+ $this->tokens =& $tokens;
+ $this->config = $config;
+ $this->context = $context;
+
+ // context variables
+ $context->register('CurrentNesting', $stack);
+ $context->register('InputIndex', $t);
+ $context->register('InputTokens', $tokens);
+ $context->register('CurrentToken', $token);
+
+ // -- begin INJECTOR --
+
+ $this->injectors = array();
+
+ $injectors = $config->getBatch('AutoFormat');
+ $def_injectors = $definition->info_injector;
+ $custom_injectors = $injectors['Custom'];
+ unset($injectors['Custom']); // special case
+ foreach ($injectors as $injector => $b) {
+ // XXX: Fix with a legitimate lookup table of enabled filters
+ if (strpos($injector, '.') !== false) continue;
+ $injector = "HTMLPurifier_Injector_$injector";
+ if (!$b) continue;
+ $this->injectors[] = new $injector;
+ }
+ foreach ($def_injectors as $injector) {
+ // assumed to be objects
+ $this->injectors[] = $injector;
+ }
+ foreach ($custom_injectors as $injector) {
+ if (is_string($injector)) {
+ $injector = "HTMLPurifier_Injector_$injector";
+ $injector = new $injector;
+ }
+ $this->injectors[] = $injector;
+ }
+
+ // give the injectors references to the definition and context
+ // variables for performance reasons
+ foreach ($this->injectors as $ix => $injector) {
+ $error = $injector->prepare($config, $context);
+ if (!$error) continue;
+ array_splice($this->injectors, $ix, 1); // rm the injector
+ trigger_error("Cannot enable {$injector->name} injector because $error is not allowed", E_USER_WARNING);
+ }
+
+ // -- end INJECTOR --
+
+ // a note on punting:
+ // In order to reduce code duplication, whenever some code needs
+ // to make HTML changes in order to make things "correct", the
+ // new HTML gets sent through the purifier, regardless of its
+ // status. This means that if we add a start token, because it
+ // was totally necessary, we don't have to update nesting; we just
+ // punt ($reprocess = true; continue;) and it does that for us.
+
+ // isset is in loop because $tokens size changes during loop exec
+ for (
+ $t = 0;
+ $t == 0 || isset($tokens[$t - 1]);
+ // only increment if we don't need to reprocess
+ $reprocess ? $reprocess = false : $t++
+ ) {
+
+ // check for a rewind
+ if (is_int($i) && $i >= 0) {
+ // possibility: disable rewinding if the current token has a
+ // rewind set on it already. This would offer protection from
+ // infinite loop, but might hinder some advanced rewinding.
+ $rewind_to = $this->injectors[$i]->getRewind();
+ if (is_int($rewind_to) && $rewind_to < $t) {
+ if ($rewind_to < 0) $rewind_to = 0;
+ while ($t > $rewind_to) {
+ $t--;
+ $prev = $tokens[$t];
+ // indicate that other injectors should not process this token,
+ // but we need to reprocess it
+ unset($prev->skip[$i]);
+ $prev->rewind = $i;
+ if ($prev instanceof HTMLPurifier_Token_Start) array_pop($this->stack);
+ elseif ($prev instanceof HTMLPurifier_Token_End) $this->stack[] = $prev->start;
+ }
+ }
+ $i = false;
+ }
+
+ // handle case of document end
+ if (!isset($tokens[$t])) {
+ // kill processing if stack is empty
+ if (empty($this->stack)) break;
+
+ // peek
+ $top_nesting = array_pop($this->stack);
+ $this->stack[] = $top_nesting;
+
+ // send error
+ if ($e && !isset($top_nesting->armor['MakeWellFormed_TagClosedError'])) {
+ $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag closed by document end', $top_nesting);
+ }
+
+ // append, don't splice, since this is the end
+ $tokens[] = new HTMLPurifier_Token_End($top_nesting->name);
+
+ // punt!
+ $reprocess = true;
+ continue;
+ }
+
+ $token = $tokens[$t];
+
+ //echo '<br>'; printTokens($tokens, $t); printTokens($this->stack);
+
+ // quick-check: if it's not a tag, no need to process
+ if (empty($token->is_tag)) {
+ if ($token instanceof HTMLPurifier_Token_Text) {
+ foreach ($this->injectors as $i => $injector) {
+ if (isset($token->skip[$i])) continue;
+ if ($token->rewind !== null && $token->rewind !== $i) continue;
+ $injector->handleText($token);
+ $this->processToken($token, $i);
+ $reprocess = true;
+ break;
+ }
+ }
+ // another possibility is a comment
+ continue;
+ }
+
+ if (isset($definition->info[$token->name])) {
+ $type = $definition->info[$token->name]->child->type;
+ } else {
+ $type = false; // Type is unknown, treat accordingly
+ }
+
+ // quick tag checks: anything that's *not* an end tag
+ $ok = false;
+ if ($type === 'empty' && $token instanceof HTMLPurifier_Token_Start) {
+ // claims to be a start tag but is empty
+ $token = new HTMLPurifier_Token_Empty($token->name, $token->attr);
+ $ok = true;
+ } elseif ($type && $type !== 'empty' && $token instanceof HTMLPurifier_Token_Empty) {
+ // claims to be empty but really is a start tag
+ $this->swap(new HTMLPurifier_Token_End($token->name));
+ $this->insertBefore(new HTMLPurifier_Token_Start($token->name, $token->attr));
+ // punt (since we had to modify the input stream in a non-trivial way)
+ $reprocess = true;
+ continue;
+ } elseif ($token instanceof HTMLPurifier_Token_Empty) {
+ // real empty token
+ $ok = true;
+ } elseif ($token instanceof HTMLPurifier_Token_Start) {
+ // start tag
+
+ // ...unless they also have to close their parent
+ if (!empty($this->stack)) {
+
+ $parent = array_pop($this->stack);
+ $this->stack[] = $parent;
+
+ if (isset($definition->info[$parent->name])) {
+ $elements = $definition->info[$parent->name]->child->getAllowedElements($config);
+ $autoclose = !isset($elements[$token->name]);
+ } else {
+ $autoclose = false;
+ }
+
+ $carryover = false;
+ if ($autoclose && $definition->info[$parent->name]->formatting) {
+ $carryover = true;
+ }
+
+ if ($autoclose) {
+ // errors need to be updated
+ $new_token = new HTMLPurifier_Token_End($parent->name);
+ $new_token->start = $parent;
+ if ($carryover) {
+ $element = clone $parent;
+ $element->armor['MakeWellFormed_TagClosedError'] = true;
+ $element->carryover = true;
+ $this->processToken(array($new_token, $token, $element));
+ } else {
+ $this->insertBefore($new_token);
+ }
+ if ($e && !isset($parent->armor['MakeWellFormed_TagClosedError'])) {
+ if (!$carryover) {
+ $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag auto closed', $parent);
+ } else {
+ $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag carryover', $parent);
+ }
+ }
+ $reprocess = true;
+ continue;
+ }
+
+ }
+ $ok = true;
+ }
+
+ if ($ok) {
+ foreach ($this->injectors as $i => $injector) {
+ if (isset($token->skip[$i])) continue;
+ if ($token->rewind !== null && $token->rewind !== $i) continue;
+ $injector->handleElement($token);
+ $this->processToken($token, $i);
+ $reprocess = true;
+ break;
+ }
+ if (!$reprocess) {
+ // ah, nothing interesting happened; do normal processing
+ $this->swap($token);
+ if ($token instanceof HTMLPurifier_Token_Start) {
+ $this->stack[] = $token;
+ } elseif ($token instanceof HTMLPurifier_Token_End) {
+ throw new HTMLPurifier_Exception('Improper handling of end tag in start code; possible error in MakeWellFormed');
+ }
+ }
+ continue;
+ }
+
+ // sanity check: we should be dealing with a closing tag
+ if (!$token instanceof HTMLPurifier_Token_End) {
+ throw new HTMLPurifier_Exception('Unaccounted for tag token in input stream, bug in HTML Purifier');
+ }
+
+ // make sure that we have something open
+ if (empty($this->stack)) {
+ if ($escape_invalid_tags) {
+ if ($e) $e->send(E_WARNING, 'Strategy_MakeWellFormed: Unnecessary end tag to text');
+ $this->swap(new HTMLPurifier_Token_Text(
+ $generator->generateFromToken($token)
+ ));
+ } else {
+ $this->remove();
+ if ($e) $e->send(E_WARNING, 'Strategy_MakeWellFormed: Unnecessary end tag removed');
+ }
+ $reprocess = true;
+ continue;
+ }
+
+ // first, check for the simplest case: everything closes neatly.
+ // Eventually, everything passes through here; if there are problems
+ // we modify the input stream accordingly and then punt, so that
+ // the tokens get processed again.
+ $current_parent = array_pop($this->stack);
+ if ($current_parent->name == $token->name) {
+ $token->start = $current_parent;
+ foreach ($this->injectors as $i => $injector) {
+ if (isset($token->skip[$i])) continue;
+ if ($token->rewind !== null && $token->rewind !== $i) continue;
+ $injector->handleEnd($token);
+ $this->processToken($token, $i);
+ $this->stack[] = $current_parent;
+ $reprocess = true;
+ break;
+ }
+ continue;
+ }
+
+ // okay, so we're trying to close the wrong tag
+
+ // undo the pop previous pop
+ $this->stack[] = $current_parent;
+
+ // scroll back the entire nest, trying to find our tag.
+ // (feature could be to specify how far you'd like to go)
+ $size = count($this->stack);
+ // -2 because -1 is the last element, but we already checked that
+ $skipped_tags = false;
+ for ($j = $size - 2; $j >= 0; $j--) {
+ if ($this->stack[$j]->name == $token->name) {
+ $skipped_tags = array_slice($this->stack, $j);
+ break;
+ }
+ }
+
+ // we didn't find the tag, so remove
+ if ($skipped_tags === false) {
+ if ($escape_invalid_tags) {
+ $this->swap(new HTMLPurifier_Token_Text(
+ $generator->generateFromToken($token)
+ ));
+ if ($e) $e->send(E_WARNING, 'Strategy_MakeWellFormed: Stray end tag to text');
+ } else {
+ $this->remove();
+ if ($e) $e->send(E_WARNING, 'Strategy_MakeWellFormed: Stray end tag removed');
+ }
+ $reprocess = true;
+ continue;
+ }
+
+ // do errors, in REVERSE $j order: a,b,c with </a></b></c>
+ $c = count($skipped_tags);
+ if ($e) {
+ for ($j = $c - 1; $j > 0; $j--) {
+ // notice we exclude $j == 0, i.e. the current ending tag, from
+ // the errors...
+ if (!isset($skipped_tags[$j]->armor['MakeWellFormed_TagClosedError'])) {
+ $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag closed by element end', $skipped_tags[$j]);
+ }
+ }
+ }
+
+ // insert tags, in FORWARD $j order: c,b,a with </a></b></c>
+ $replace = array($token);
+ for ($j = 1; $j < $c; $j++) {
+ // ...as well as from the insertions
+ $new_token = new HTMLPurifier_Token_End($skipped_tags[$j]->name);
+ $new_token->start = $skipped_tags[$j];
+ array_unshift($replace, $new_token);
+ if (isset($definition->info[$new_token->name]) && $definition->info[$new_token->name]->formatting) {
+ $element = clone $skipped_tags[$j];
+ $element->carryover = true;
+ $element->armor['MakeWellFormed_TagClosedError'] = true;
+ $replace[] = $element;
+ }
+ }
+ $this->processToken($replace);
+ $reprocess = true;
+ continue;
+ }
+
+ $context->destroy('CurrentNesting');
+ $context->destroy('InputTokens');
+ $context->destroy('InputIndex');
+ $context->destroy('CurrentToken');
+
+ unset($this->injectors, $this->stack, $this->tokens, $this->t);
+ return $tokens;
+ }
+
+ /**
+ * Processes arbitrary token values for complicated substitution patterns.
+ * In general:
+ *
+ * If $token is an array, it is a list of tokens to substitute for the
+ * current token. These tokens then get individually processed. If there
+ * is a leading integer in the list, that integer determines how many
+ * tokens from the stream should be removed.
+ *
+ * If $token is a regular token, it is swapped with the current token.
+ *
+ * If $token is false, the current token is deleted.
+ *
+ * If $token is an integer, that number of tokens (with the first token
+ * being the current one) will be deleted.
+ *
+ * @param $token Token substitution value
+ * @param $injector Injector that performed the substitution; default is if
+ * this is not an injector related operation.
+ */
+ protected function processToken($token, $injector = -1) {
+
+ // normalize forms of token
+ if (is_object($token)) $token = array(1, $token);
+ if (is_int($token)) $token = array($token);
+ if ($token === false) $token = array(1);
+ if (!is_array($token)) throw new HTMLPurifier_Exception('Invalid token type from injector');
+ if (!is_int($token[0])) array_unshift($token, 1);
+ if ($token[0] === 0) throw new HTMLPurifier_Exception('Deleting zero tokens is not valid');
+
+ // $token is now an array with the following form:
+ // array(number nodes to delete, new node 1, new node 2, ...)
+
+ $delete = array_shift($token);
+ $old = array_splice($this->tokens, $this->t, $delete, $token);
+
+ if ($injector > -1) {
+ // determine appropriate skips
+ $oldskip = isset($old[0]) ? $old[0]->skip : array();
+ foreach ($token as $object) {
+ $object->skip = $oldskip;
+ $object->skip[$injector] = true;
+ }
+ }
+
+ }
+
+ /**
+ * Inserts a token before the current token. Cursor now points to this token
+ */
+ private function insertBefore($token) {
+ array_splice($this->tokens, $this->t, 0, array($token));
+ }
+
+ /**
+ * Removes current token. Cursor now points to new token occupying previously
+ * occupied space.
+ */
+ private function remove() {
+ array_splice($this->tokens, $this->t, 1);
+ }
+
+ /**
+ * Swap current token with new token. Cursor points to new token (no change).
+ */
+ private function swap($token) {
+ $this->tokens[$this->t] = $token;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Removes all unrecognized tags from the list of tokens.
+ *
+ * This strategy iterates through all the tokens and removes unrecognized
+ * tokens. If a token is not recognized but a TagTransform is defined for
+ * that element, the element will be transformed accordingly.
+ */
+
+class HTMLPurifier_Strategy_RemoveForeignElements extends HTMLPurifier_Strategy
+{
+
+ public function execute($tokens, $config, $context) {
+ $definition = $config->getHTMLDefinition();
+ $generator = new HTMLPurifier_Generator($config, $context);
+ $result = array();
+
+ $escape_invalid_tags = $config->get('Core.EscapeInvalidTags');
+ $remove_invalid_img = $config->get('Core.RemoveInvalidImg');
+
+ // currently only used to determine if comments should be kept
+ $trusted = $config->get('HTML.Trusted');
+
+ $remove_script_contents = $config->get('Core.RemoveScriptContents');
+ $hidden_elements = $config->get('Core.HiddenElements');
+
+ // remove script contents compatibility
+ if ($remove_script_contents === true) {
+ $hidden_elements['script'] = true;
+ } elseif ($remove_script_contents === false && isset($hidden_elements['script'])) {
+ unset($hidden_elements['script']);
+ }
+
+ $attr_validator = new HTMLPurifier_AttrValidator();
+
+ // removes tokens until it reaches a closing tag with its value
+ $remove_until = false;
+
+ // converts comments into text tokens when this is equal to a tag name
+ $textify_comments = false;
+
+ $token = false;
+ $context->register('CurrentToken', $token);
+
+ $e = false;
+ if ($config->get('Core.CollectErrors')) {
+ $e =& $context->get('ErrorCollector');
+ }
+
+ foreach($tokens as $token) {
+ if ($remove_until) {
+ if (empty($token->is_tag) || $token->name !== $remove_until) {
+ continue;
+ }
+ }
+ if (!empty( $token->is_tag )) {
+ // DEFINITION CALL
+
+ // before any processing, try to transform the element
+ if (
+ isset($definition->info_tag_transform[$token->name])
+ ) {
+ $original_name = $token->name;
+ // there is a transformation for this tag
+ // DEFINITION CALL
+ $token = $definition->
+ info_tag_transform[$token->name]->
+ transform($token, $config, $context);
+ if ($e) $e->send(E_NOTICE, 'Strategy_RemoveForeignElements: Tag transform', $original_name);
+ }
+
+ if (isset($definition->info[$token->name])) {
+
+ // mostly everything's good, but
+ // we need to make sure required attributes are in order
+ if (
+ ($token instanceof HTMLPurifier_Token_Start || $token instanceof HTMLPurifier_Token_Empty) &&
+ $definition->info[$token->name]->required_attr &&
+ ($token->name != 'img' || $remove_invalid_img) // ensure config option still works
+ ) {
+ $attr_validator->validateToken($token, $config, $context);
+ $ok = true;
+ foreach ($definition->info[$token->name]->required_attr as $name) {
+ if (!isset($token->attr[$name])) {
+ $ok = false;
+ break;
+ }
+ }
+ if (!$ok) {
+ if ($e) $e->send(E_ERROR, 'Strategy_RemoveForeignElements: Missing required attribute', $name);
+ continue;
+ }
+ $token->armor['ValidateAttributes'] = true;
+ }
+
+ if (isset($hidden_elements[$token->name]) && $token instanceof HTMLPurifier_Token_Start) {
+ $textify_comments = $token->name;
+ } elseif ($token->name === $textify_comments && $token instanceof HTMLPurifier_Token_End) {
+ $textify_comments = false;
+ }
+
+ } elseif ($escape_invalid_tags) {
+ // invalid tag, generate HTML representation and insert in
+ if ($e) $e->send(E_WARNING, 'Strategy_RemoveForeignElements: Foreign element to text');
+ $token = new HTMLPurifier_Token_Text(
+ $generator->generateFromToken($token)
+ );
+ } else {
+ // check if we need to destroy all of the tag's children
+ // CAN BE GENERICIZED
+ if (isset($hidden_elements[$token->name])) {
+ if ($token instanceof HTMLPurifier_Token_Start) {
+ $remove_until = $token->name;
+ } elseif ($token instanceof HTMLPurifier_Token_Empty) {
+ // do nothing: we're still looking
+ } else {
+ $remove_until = false;
+ }
+ if ($e) $e->send(E_ERROR, 'Strategy_RemoveForeignElements: Foreign meta element removed');
+ } else {
+ if ($e) $e->send(E_ERROR, 'Strategy_RemoveForeignElements: Foreign element removed');
+ }
+ continue;
+ }
+ } elseif ($token instanceof HTMLPurifier_Token_Comment) {
+ // textify comments in script tags when they are allowed
+ if ($textify_comments !== false) {
+ $data = $token->data;
+ $token = new HTMLPurifier_Token_Text($data);
+ } elseif ($trusted) {
+ // keep, but perform comment cleaning
+ if ($e) {
+ // perform check whether or not there's a trailing hyphen
+ if (substr($token->data, -1) == '-') {
+ $e->send(E_NOTICE, 'Strategy_RemoveForeignElements: Trailing hyphen in comment removed');
+ }
+ }
+ $token->data = rtrim($token->data, '-');
+ $found_double_hyphen = false;
+ while (strpos($token->data, '--') !== false) {
+ if ($e && !$found_double_hyphen) {
+ $e->send(E_NOTICE, 'Strategy_RemoveForeignElements: Hyphens in comment collapsed');
+ }
+ $found_double_hyphen = true; // prevent double-erroring
+ $token->data = str_replace('--', '-', $token->data);
+ }
+ } else {
+ // strip comments
+ if ($e) $e->send(E_NOTICE, 'Strategy_RemoveForeignElements: Comment removed');
+ continue;
+ }
+ } elseif ($token instanceof HTMLPurifier_Token_Text) {
+ } else {
+ continue;
+ }
+ $result[] = $token;
+ }
+ if ($remove_until && $e) {
+ // we removed tokens until the end, throw error
+ $e->send(E_ERROR, 'Strategy_RemoveForeignElements: Token removed to end', $remove_until);
+ }
+
+ $context->destroy('CurrentToken');
+
+ return $result;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validate all attributes in the tokens.
+ */
+
+class HTMLPurifier_Strategy_ValidateAttributes extends HTMLPurifier_Strategy
+{
+
+ public function execute($tokens, $config, $context) {
+
+ // setup validator
+ $validator = new HTMLPurifier_AttrValidator();
+
+ $token = false;
+ $context->register('CurrentToken', $token);
+
+ foreach ($tokens as $key => $token) {
+
+ // only process tokens that have attributes,
+ // namely start and empty tags
+ if (!$token instanceof HTMLPurifier_Token_Start && !$token instanceof HTMLPurifier_Token_Empty) continue;
+
+ // skip tokens that are armored
+ if (!empty($token->armor['ValidateAttributes'])) continue;
+
+ // note that we have no facilities here for removing tokens
+ $validator->validateToken($token, $config, $context);
+
+ $tokens[$key] = $token; // for PHP 4
+ }
+ $context->destroy('CurrentToken');
+
+ return $tokens;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * This is in almost every respect equivalent to an array except
+ * that it keeps track of which keys were accessed.
+ *
+ * @warning For the sake of backwards compatibility with early versions
+ * of PHP 5, you must not use the $hash[$key] syntax; if you do
+ * our version of offsetGet is never called.
+ */
+class HTMLPurifier_StringHash extends ArrayObject
+{
+ protected $accessed = array();
+
+ /**
+ * Retrieves a value, and logs the access.
+ */
+ public function offsetGet($index) {
+ $this->accessed[$index] = true;
+ return parent::offsetGet($index);
+ }
+
+ /**
+ * Returns a lookup array of all array indexes that have been accessed.
+ * @return Array in form array($index => true).
+ */
+ public function getAccessed() {
+ return $this->accessed;
+ }
+
+ /**
+ * Resets the access array.
+ */
+ public function resetAccessed() {
+ $this->accessed = array();
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Parses string hash files. File format is as such:
+ *
+ * DefaultKeyValue
+ * KEY: Value
+ * KEY2: Value2
+ * --MULTILINE-KEY--
+ * Multiline
+ * value.
+ *
+ * Which would output something similar to:
+ *
+ * array(
+ * 'ID' => 'DefaultKeyValue',
+ * 'KEY' => 'Value',
+ * 'KEY2' => 'Value2',
+ * 'MULTILINE-KEY' => "Multiline\nvalue.\n",
+ * )
+ *
+ * We use this as an easy to use file-format for configuration schema
+ * files, but the class itself is usage agnostic.
+ *
+ * You can use ---- to forcibly terminate parsing of a single string-hash;
+ * this marker is used in multi string-hashes to delimit boundaries.
+ */
+class HTMLPurifier_StringHashParser
+{
+
+ public $default = 'ID';
+
+ /**
+ * Parses a file that contains a single string-hash.
+ */
+ public function parseFile($file) {
+ if (!file_exists($file)) return false;
+ $fh = fopen($file, 'r');
+ if (!$fh) return false;
+ $ret = $this->parseHandle($fh);
+ fclose($fh);
+ return $ret;
+ }
+
+ /**
+ * Parses a file that contains multiple string-hashes delimited by '----'
+ */
+ public function parseMultiFile($file) {
+ if (!file_exists($file)) return false;
+ $ret = array();
+ $fh = fopen($file, 'r');
+ if (!$fh) return false;
+ while (!feof($fh)) {
+ $ret[] = $this->parseHandle($fh);
+ }
+ fclose($fh);
+ return $ret;
+ }
+
+ /**
+ * Internal parser that acepts a file handle.
+ * @note While it's possible to simulate in-memory parsing by using
+ * custom stream wrappers, if such a use-case arises we should
+ * factor out the file handle into its own class.
+ * @param $fh File handle with pointer at start of valid string-hash
+ * block.
+ */
+ protected function parseHandle($fh) {
+ $state = false;
+ $single = false;
+ $ret = array();
+ do {
+ $line = fgets($fh);
+ if ($line === false) break;
+ $line = rtrim($line, "\n\r");
+ if (!$state && $line === '') continue;
+ if ($line === '----') break;
+ if (strncmp('--#', $line, 3) === 0) {
+ // Comment
+ continue;
+ } elseif (strncmp('--', $line, 2) === 0) {
+ // Multiline declaration
+ $state = trim($line, '- ');
+ if (!isset($ret[$state])) $ret[$state] = '';
+ continue;
+ } elseif (!$state) {
+ $single = true;
+ if (strpos($line, ':') !== false) {
+ // Single-line declaration
+ list($state, $line) = explode(':', $line, 2);
+ $line = trim($line);
+ } else {
+ // Use default declaration
+ $state = $this->default;
+ }
+ }
+ if ($single) {
+ $ret[$state] = $line;
+ $single = false;
+ $state = false;
+ } else {
+ $ret[$state] .= "$line\n";
+ }
+ } while (!feof($fh));
+ return $ret;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Defines a mutation of an obsolete tag into a valid tag.
+ */
+abstract class HTMLPurifier_TagTransform
+{
+
+ /**
+ * Tag name to transform the tag to.
+ */
+ public $transform_to;
+
+ /**
+ * Transforms the obsolete tag into the valid tag.
+ * @param $tag Tag to be transformed.
+ * @param $config Mandatory HTMLPurifier_Config object
+ * @param $context Mandatory HTMLPurifier_Context object
+ */
+ abstract public function transform($tag, $config, $context);
+
+ /**
+ * Prepends CSS properties to the style attribute, creating the
+ * attribute if it doesn't exist.
+ * @warning Copied over from AttrTransform, be sure to keep in sync
+ * @param $attr Attribute array to process (passed by reference)
+ * @param $css CSS to prepend
+ */
+ protected function prependCSS(&$attr, $css) {
+ $attr['style'] = isset($attr['style']) ? $attr['style'] : '';
+ $attr['style'] = $css . $attr['style'];
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Transforms FONT tags to the proper form (SPAN with CSS styling)
+ *
+ * This transformation takes the three proprietary attributes of FONT and
+ * transforms them into their corresponding CSS attributes. These are color,
+ * face, and size.
+ *
+ * @note Size is an interesting case because it doesn't map cleanly to CSS.
+ * Thanks to
+ * http://style.cleverchimp.com/font_size_intervals/altintervals.html
+ * for reasonable mappings.
+ * @warning This doesn't work completely correctly; specifically, this
+ * TagTransform operates before well-formedness is enforced, so
+ * the "active formatting elements" algorithm doesn't get applied.
+ */
+class HTMLPurifier_TagTransform_Font extends HTMLPurifier_TagTransform
+{
+
+ public $transform_to = 'span';
+
+ protected $_size_lookup = array(
+ '0' => 'xx-small',
+ '1' => 'xx-small',
+ '2' => 'small',
+ '3' => 'medium',
+ '4' => 'large',
+ '5' => 'x-large',
+ '6' => 'xx-large',
+ '7' => '300%',
+ '-1' => 'smaller',
+ '-2' => '60%',
+ '+1' => 'larger',
+ '+2' => '150%',
+ '+3' => '200%',
+ '+4' => '300%'
+ );
+
+ public function transform($tag, $config, $context) {
+
+ if ($tag instanceof HTMLPurifier_Token_End) {
+ $new_tag = clone $tag;
+ $new_tag->name = $this->transform_to;
+ return $new_tag;
+ }
+
+ $attr = $tag->attr;
+ $prepend_style = '';
+
+ // handle color transform
+ if (isset($attr['color'])) {
+ $prepend_style .= 'color:' . $attr['color'] . ';';
+ unset($attr['color']);
+ }
+
+ // handle face transform
+ if (isset($attr['face'])) {
+ $prepend_style .= 'font-family:' . $attr['face'] . ';';
+ unset($attr['face']);
+ }
+
+ // handle size transform
+ if (isset($attr['size'])) {
+ // normalize large numbers
+ if ($attr['size']{0} == '+' || $attr['size']{0} == '-') {
+ $size = (int) $attr['size'];
+ if ($size < -2) $attr['size'] = '-2';
+ if ($size > 4) $attr['size'] = '+4';
+ } else {
+ $size = (int) $attr['size'];
+ if ($size > 7) $attr['size'] = '7';
+ }
+ if (isset($this->_size_lookup[$attr['size']])) {
+ $prepend_style .= 'font-size:' .
+ $this->_size_lookup[$attr['size']] . ';';
+ }
+ unset($attr['size']);
+ }
+
+ if ($prepend_style) {
+ $attr['style'] = isset($attr['style']) ?
+ $prepend_style . $attr['style'] :
+ $prepend_style;
+ }
+
+ $new_tag = clone $tag;
+ $new_tag->name = $this->transform_to;
+ $new_tag->attr = $attr;
+
+ return $new_tag;
+
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Simple transformation, just change tag name to something else,
+ * and possibly add some styling. This will cover most of the deprecated
+ * tag cases.
+ */
+class HTMLPurifier_TagTransform_Simple extends HTMLPurifier_TagTransform
+{
+
+ protected $style;
+
+ /**
+ * @param $transform_to Tag name to transform to.
+ * @param $style CSS style to add to the tag
+ */
+ public function __construct($transform_to, $style = null) {
+ $this->transform_to = $transform_to;
+ $this->style = $style;
+ }
+
+ public function transform($tag, $config, $context) {
+ $new_tag = clone $tag;
+ $new_tag->name = $this->transform_to;
+ if (!is_null($this->style) &&
+ ($new_tag instanceof HTMLPurifier_Token_Start || $new_tag instanceof HTMLPurifier_Token_Empty)
+ ) {
+ $this->prependCSS($new_tag->attr, $this->style);
+ }
+ return $new_tag;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Abstract base token class that all others inherit from.
+ */
+class HTMLPurifier_Token {
+ public $line; /**< Line number node was on in source document. Null if unknown. */
+ public $col; /**< Column of line node was on in source document. Null if unknown. */
+
+ /**
+ * Lookup array of processing that this token is exempt from.
+ * Currently, valid values are "ValidateAttributes" and
+ * "MakeWellFormed_TagClosedError"
+ */
+ public $armor = array();
+
+ /**
+ * Used during MakeWellFormed.
+ */
+ public $skip;
+ public $rewind;
+ public $carryover;
+
+ public function __get($n) {
+ if ($n === 'type') {
+ trigger_error('Deprecated type property called; use instanceof', E_USER_NOTICE);
+ switch (get_class($this)) {
+ case 'HTMLPurifier_Token_Start': return 'start';
+ case 'HTMLPurifier_Token_Empty': return 'empty';
+ case 'HTMLPurifier_Token_End': return 'end';
+ case 'HTMLPurifier_Token_Text': return 'text';
+ case 'HTMLPurifier_Token_Comment': return 'comment';
+ default: return null;
+ }
+ }
+ }
+
+ /**
+ * Sets the position of the token in the source document.
+ */
+ public function position($l = null, $c = null) {
+ $this->line = $l;
+ $this->col = $c;
+ }
+
+ /**
+ * Convenience function for DirectLex settings line/col position.
+ */
+ public function rawPosition($l, $c) {
+ if ($c === -1) $l++;
+ $this->line = $l;
+ $this->col = $c;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Concrete comment token class. Generally will be ignored.
+ */
+class HTMLPurifier_Token_Comment extends HTMLPurifier_Token
+{
+ public $data; /**< Character data within comment. */
+ public $is_whitespace = true;
+ /**
+ * Transparent constructor.
+ *
+ * @param $data String comment data.
+ */
+ public function __construct($data, $line = null, $col = null) {
+ $this->data = $data;
+ $this->line = $line;
+ $this->col = $col;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Concrete empty token class.
+ */
+class HTMLPurifier_Token_Empty extends HTMLPurifier_Token_Tag
+{
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Concrete end token class.
+ *
+ * @warning This class accepts attributes even though end tags cannot. This
+ * is for optimization reasons, as under normal circumstances, the Lexers
+ * do not pass attributes.
+ */
+class HTMLPurifier_Token_End extends HTMLPurifier_Token_Tag
+{
+ /**
+ * Token that started this node. Added by MakeWellFormed. Please
+ * do not edit this!
+ */
+ public $start;
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Concrete start token class.
+ */
+class HTMLPurifier_Token_Start extends HTMLPurifier_Token_Tag
+{
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Abstract class of a tag token (start, end or empty), and its behavior.
+ */
+class HTMLPurifier_Token_Tag extends HTMLPurifier_Token
+{
+ /**
+ * Static bool marker that indicates the class is a tag.
+ *
+ * This allows us to check objects with <tt>!empty($obj->is_tag)</tt>
+ * without having to use a function call <tt>is_a()</tt>.
+ */
+ public $is_tag = true;
+
+ /**
+ * The lower-case name of the tag, like 'a', 'b' or 'blockquote'.
+ *
+ * @note Strictly speaking, XML tags are case sensitive, so we shouldn't
+ * be lower-casing them, but these tokens cater to HTML tags, which are
+ * insensitive.
+ */
+ public $name;
+
+ /**
+ * Associative array of the tag's attributes.
+ */
+ public $attr = array();
+
+ /**
+ * Non-overloaded constructor, which lower-cases passed tag name.
+ *
+ * @param $name String name.
+ * @param $attr Associative array of attributes.
+ */
+ public function __construct($name, $attr = array(), $line = null, $col = null) {
+ $this->name = ctype_lower($name) ? $name : strtolower($name);
+ foreach ($attr as $key => $value) {
+ // normalization only necessary when key is not lowercase
+ if (!ctype_lower($key)) {
+ $new_key = strtolower($key);
+ if (!isset($attr[$new_key])) {
+ $attr[$new_key] = $attr[$key];
+ }
+ if ($new_key !== $key) {
+ unset($attr[$key]);
+ }
+ }
+ }
+ $this->attr = $attr;
+ $this->line = $line;
+ $this->col = $col;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Concrete text token class.
+ *
+ * Text tokens comprise of regular parsed character data (PCDATA) and raw
+ * character data (from the CDATA sections). Internally, their
+ * data is parsed with all entities expanded. Surprisingly, the text token
+ * does have a "tag name" called #PCDATA, which is how the DTD represents it
+ * in permissible child nodes.
+ */
+class HTMLPurifier_Token_Text extends HTMLPurifier_Token
+{
+
+ public $name = '#PCDATA'; /**< PCDATA tag name compatible with DTD. */
+ public $data; /**< Parsed character data of text. */
+ public $is_whitespace; /**< Bool indicating if node is whitespace. */
+
+ /**
+ * Constructor, accepts data and determines if it is whitespace.
+ *
+ * @param $data String parsed character data.
+ */
+ public function __construct($data, $line = null, $col = null) {
+ $this->data = $data;
+ $this->is_whitespace = ctype_space($data);
+ $this->line = $line;
+ $this->col = $col;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Factory for token generation.
+ *
+ * @note Doing some benchmarking indicates that the new operator is much
+ * slower than the clone operator (even discounting the cost of the
+ * constructor). This class is for that optimization.
+ * Other then that, there's not much point as we don't
+ * maintain parallel HTMLPurifier_Token hierarchies (the main reason why
+ * you'd want to use an abstract factory).
+ * @todo Port DirectLex to use this
+ */
+class HTMLPurifier_TokenFactory
+{
+
+ /**
+ * Prototypes that will be cloned.
+ * @private
+ */
+ // p stands for prototype
+ private $p_start, $p_end, $p_empty, $p_text, $p_comment;
+
+ /**
+ * Generates blank prototypes for cloning.
+ */
+ public function __construct() {
+ $this->p_start = new HTMLPurifier_Token_Start('', array());
+ $this->p_end = new HTMLPurifier_Token_End('');
+ $this->p_empty = new HTMLPurifier_Token_Empty('', array());
+ $this->p_text = new HTMLPurifier_Token_Text('');
+ $this->p_comment= new HTMLPurifier_Token_Comment('');
+ }
+
+ /**
+ * Creates a HTMLPurifier_Token_Start.
+ * @param $name Tag name
+ * @param $attr Associative array of attributes
+ * @return Generated HTMLPurifier_Token_Start
+ */
+ public function createStart($name, $attr = array()) {
+ $p = clone $this->p_start;
+ $p->__construct($name, $attr);
+ return $p;
+ }
+
+ /**
+ * Creates a HTMLPurifier_Token_End.
+ * @param $name Tag name
+ * @return Generated HTMLPurifier_Token_End
+ */
+ public function createEnd($name) {
+ $p = clone $this->p_end;
+ $p->__construct($name);
+ return $p;
+ }
+
+ /**
+ * Creates a HTMLPurifier_Token_Empty.
+ * @param $name Tag name
+ * @param $attr Associative array of attributes
+ * @return Generated HTMLPurifier_Token_Empty
+ */
+ public function createEmpty($name, $attr = array()) {
+ $p = clone $this->p_empty;
+ $p->__construct($name, $attr);
+ return $p;
+ }
+
+ /**
+ * Creates a HTMLPurifier_Token_Text.
+ * @param $data Data of text token
+ * @return Generated HTMLPurifier_Token_Text
+ */
+ public function createText($data) {
+ $p = clone $this->p_text;
+ $p->__construct($data);
+ return $p;
+ }
+
+ /**
+ * Creates a HTMLPurifier_Token_Comment.
+ * @param $data Data of comment token
+ * @return Generated HTMLPurifier_Token_Comment
+ */
+ public function createComment($data) {
+ $p = clone $this->p_comment;
+ $p->__construct($data);
+ return $p;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * HTML Purifier's internal representation of a URI.
+ * @note
+ * Internal data-structures are completely escaped. If the data needs
+ * to be used in a non-URI context (which is very unlikely), be sure
+ * to decode it first. The URI may not necessarily be well-formed until
+ * validate() is called.
+ */
+class HTMLPurifier_URI
+{
+
+ public $scheme, $userinfo, $host, $port, $path, $query, $fragment;
+
+ /**
+ * @note Automatically normalizes scheme and port
+ */
+ public function __construct($scheme, $userinfo, $host, $port, $path, $query, $fragment) {
+ $this->scheme = is_null($scheme) || ctype_lower($scheme) ? $scheme : strtolower($scheme);
+ $this->userinfo = $userinfo;
+ $this->host = $host;
+ $this->port = is_null($port) ? $port : (int) $port;
+ $this->path = $path;
+ $this->query = $query;
+ $this->fragment = $fragment;
+ }
+
+ /**
+ * Retrieves a scheme object corresponding to the URI's scheme/default
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ * @return Scheme object appropriate for validating this URI
+ */
+ public function getSchemeObj($config, $context) {
+ $registry = HTMLPurifier_URISchemeRegistry::instance();
+ if ($this->scheme !== null) {
+ $scheme_obj = $registry->getScheme($this->scheme, $config, $context);
+ if (!$scheme_obj) return false; // invalid scheme, clean it out
+ } else {
+ // no scheme: retrieve the default one
+ $def = $config->getDefinition('URI');
+ $scheme_obj = $registry->getScheme($def->defaultScheme, $config, $context);
+ if (!$scheme_obj) {
+ // something funky happened to the default scheme object
+ trigger_error(
+ 'Default scheme object "' . $def->defaultScheme . '" was not readable',
+ E_USER_WARNING
+ );
+ return false;
+ }
+ }
+ return $scheme_obj;
+ }
+
+ /**
+ * Generic validation method applicable for all schemes. May modify
+ * this URI in order to get it into a compliant form.
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ * @return True if validation/filtering succeeds, false if failure
+ */
+ public function validate($config, $context) {
+
+ // ABNF definitions from RFC 3986
+ $chars_sub_delims = '!$&\'()*+,;=';
+ $chars_gen_delims = ':/?#[]@';
+ $chars_pchar = $chars_sub_delims . ':@';
+
+ // validate scheme (MUST BE FIRST!)
+ if (!is_null($this->scheme) && is_null($this->host)) {
+ $def = $config->getDefinition('URI');
+ if ($def->defaultScheme === $this->scheme) {
+ $this->scheme = null;
+ }
+ }
+
+ // validate host
+ if (!is_null($this->host)) {
+ $host_def = new HTMLPurifier_AttrDef_URI_Host();
+ $this->host = $host_def->validate($this->host, $config, $context);
+ if ($this->host === false) $this->host = null;
+ }
+
+ // validate username
+ if (!is_null($this->userinfo)) {
+ $encoder = new HTMLPurifier_PercentEncoder($chars_sub_delims . ':');
+ $this->userinfo = $encoder->encode($this->userinfo);
+ }
+
+ // validate port
+ if (!is_null($this->port)) {
+ if ($this->port < 1 || $this->port > 65535) $this->port = null;
+ }
+
+ // validate path
+ $path_parts = array();
+ $segments_encoder = new HTMLPurifier_PercentEncoder($chars_pchar . '/');
+ if (!is_null($this->host)) {
+ // path-abempty (hier and relative)
+ $this->path = $segments_encoder->encode($this->path);
+ } elseif ($this->path !== '' && $this->path[0] === '/') {
+ // path-absolute (hier and relative)
+ if (strlen($this->path) >= 2 && $this->path[1] === '/') {
+ // This shouldn't ever happen!
+ $this->path = '';
+ } else {
+ $this->path = $segments_encoder->encode($this->path);
+ }
+ } elseif (!is_null($this->scheme) && $this->path !== '') {
+ // path-rootless (hier)
+ // Short circuit evaluation means we don't need to check nz
+ $this->path = $segments_encoder->encode($this->path);
+ } elseif (is_null($this->scheme) && $this->path !== '') {
+ // path-noscheme (relative)
+ // (once again, not checking nz)
+ $segment_nc_encoder = new HTMLPurifier_PercentEncoder($chars_sub_delims . '@');
+ $c = strpos($this->path, '/');
+ if ($c !== false) {
+ $this->path =
+ $segment_nc_encoder->encode(substr($this->path, 0, $c)) .
+ $segments_encoder->encode(substr($this->path, $c));
+ } else {
+ $this->path = $segment_nc_encoder->encode($this->path);
+ }
+ } else {
+ // path-empty (hier and relative)
+ $this->path = ''; // just to be safe
+ }
+
+ // qf = query and fragment
+ $qf_encoder = new HTMLPurifier_PercentEncoder($chars_pchar . '/?');
+
+ if (!is_null($this->query)) {
+ $this->query = $qf_encoder->encode($this->query);
+ }
+
+ if (!is_null($this->fragment)) {
+ $this->fragment = $qf_encoder->encode($this->fragment);
+ }
+
+ return true;
+
+ }
+
+ /**
+ * Convert URI back to string
+ * @return String URI appropriate for output
+ */
+ public function toString() {
+ // reconstruct authority
+ $authority = null;
+ if (!is_null($this->host)) {
+ $authority = '';
+ if(!is_null($this->userinfo)) $authority .= $this->userinfo . '@';
+ $authority .= $this->host;
+ if(!is_null($this->port)) $authority .= ':' . $this->port;
+ }
+
+ // reconstruct the result
+ $result = '';
+ if (!is_null($this->scheme)) $result .= $this->scheme . ':';
+ if (!is_null($authority)) $result .= '//' . $authority;
+ $result .= $this->path;
+ if (!is_null($this->query)) $result .= '?' . $this->query;
+ if (!is_null($this->fragment)) $result .= '#' . $this->fragment;
+
+ return $result;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_URIDefinition extends HTMLPurifier_Definition
+{
+
+ public $type = 'URI';
+ protected $filters = array();
+ protected $postFilters = array();
+ protected $registeredFilters = array();
+
+ /**
+ * HTMLPurifier_URI object of the base specified at %URI.Base
+ */
+ public $base;
+
+ /**
+ * String host to consider "home" base, derived off of $base
+ */
+ public $host;
+
+ /**
+ * Name of default scheme based on %URI.DefaultScheme and %URI.Base
+ */
+ public $defaultScheme;
+
+ public function __construct() {
+ $this->registerFilter(new HTMLPurifier_URIFilter_DisableExternal());
+ $this->registerFilter(new HTMLPurifier_URIFilter_DisableExternalResources());
+ $this->registerFilter(new HTMLPurifier_URIFilter_HostBlacklist());
+ $this->registerFilter(new HTMLPurifier_URIFilter_MakeAbsolute());
+ $this->registerFilter(new HTMLPurifier_URIFilter_Munge());
+ }
+
+ public function registerFilter($filter) {
+ $this->registeredFilters[$filter->name] = $filter;
+ }
+
+ public function addFilter($filter, $config) {
+ $r = $filter->prepare($config);
+ if ($r === false) return; // null is ok, for backwards compat
+ if ($filter->post) {
+ $this->postFilters[$filter->name] = $filter;
+ } else {
+ $this->filters[$filter->name] = $filter;
+ }
+ }
+
+ protected function doSetup($config) {
+ $this->setupMemberVariables($config);
+ $this->setupFilters($config);
+ }
+
+ protected function setupFilters($config) {
+ foreach ($this->registeredFilters as $name => $filter) {
+ $conf = $config->get('URI.' . $name);
+ if ($conf !== false && $conf !== null) {
+ $this->addFilter($filter, $config);
+ }
+ }
+ unset($this->registeredFilters);
+ }
+
+ protected function setupMemberVariables($config) {
+ $this->host = $config->get('URI.Host');
+ $base_uri = $config->get('URI.Base');
+ if (!is_null($base_uri)) {
+ $parser = new HTMLPurifier_URIParser();
+ $this->base = $parser->parse($base_uri);
+ $this->defaultScheme = $this->base->scheme;
+ if (is_null($this->host)) $this->host = $this->base->host;
+ }
+ if (is_null($this->defaultScheme)) $this->defaultScheme = $config->get('URI.DefaultScheme');
+ }
+
+ public function filter(&$uri, $config, $context) {
+ foreach ($this->filters as $name => $f) {
+ $result = $f->filter($uri, $config, $context);
+ if (!$result) return false;
+ }
+ return true;
+ }
+
+ public function postFilter(&$uri, $config, $context) {
+ foreach ($this->postFilters as $name => $f) {
+ $result = $f->filter($uri, $config, $context);
+ if (!$result) return false;
+ }
+ return true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Chainable filters for custom URI processing.
+ *
+ * These filters can perform custom actions on a URI filter object,
+ * including transformation or blacklisting.
+ *
+ * @warning This filter is called before scheme object validation occurs.
+ * Make sure, if you require a specific scheme object, you
+ * you check that it exists. This allows filters to convert
+ * proprietary URI schemes into regular ones.
+ */
+abstract class HTMLPurifier_URIFilter
+{
+
+ /**
+ * Unique identifier of filter
+ */
+ public $name;
+
+ /**
+ * True if this filter should be run after scheme validation.
+ */
+ public $post = false;
+
+ /**
+ * Performs initialization for the filter
+ */
+ public function prepare($config) {return true;}
+
+ /**
+ * Filter a URI object
+ * @param $uri Reference to URI object variable
+ * @param $config Instance of HTMLPurifier_Config
+ * @param $context Instance of HTMLPurifier_Context
+ * @return bool Whether or not to continue processing: false indicates
+ * URL is no good, true indicates continue processing. Note that
+ * all changes are committed directly on the URI object
+ */
+ abstract public function filter(&$uri, $config, $context);
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_URIFilter_DisableExternal extends HTMLPurifier_URIFilter
+{
+ public $name = 'DisableExternal';
+ protected $ourHostParts = false;
+ public function prepare($config) {
+ $our_host = $config->getDefinition('URI')->host;
+ if ($our_host !== null) $this->ourHostParts = array_reverse(explode('.', $our_host));
+ }
+ public function filter(&$uri, $config, $context) {
+ if (is_null($uri->host)) return true;
+ if ($this->ourHostParts === false) return false;
+ $host_parts = array_reverse(explode('.', $uri->host));
+ foreach ($this->ourHostParts as $i => $x) {
+ if (!isset($host_parts[$i])) return false;
+ if ($host_parts[$i] != $this->ourHostParts[$i]) return false;
+ }
+ return true;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_URIFilter_DisableExternalResources extends HTMLPurifier_URIFilter_DisableExternal
+{
+ public $name = 'DisableExternalResources';
+ public function filter(&$uri, $config, $context) {
+ if (!$context->get('EmbeddedURI', true)) return true;
+ return parent::filter($uri, $config, $context);
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_URIFilter_HostBlacklist extends HTMLPurifier_URIFilter
+{
+ public $name = 'HostBlacklist';
+ protected $blacklist = array();
+ public function prepare($config) {
+ $this->blacklist = $config->get('URI.HostBlacklist');
+ return true;
+ }
+ public function filter(&$uri, $config, $context) {
+ foreach($this->blacklist as $blacklisted_host_fragment) {
+ if (strpos($uri->host, $blacklisted_host_fragment) !== false) {
+ return false;
+ }
+ }
+ return true;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// does not support network paths
+
+class HTMLPurifier_URIFilter_MakeAbsolute extends HTMLPurifier_URIFilter
+{
+ public $name = 'MakeAbsolute';
+ protected $base;
+ protected $basePathStack = array();
+ public function prepare($config) {
+ $def = $config->getDefinition('URI');
+ $this->base = $def->base;
+ if (is_null($this->base)) {
+ trigger_error('URI.MakeAbsolute is being ignored due to lack of value for URI.Base configuration', E_USER_WARNING);
+ return false;
+ }
+ $this->base->fragment = null; // fragment is invalid for base URI
+ $stack = explode('/', $this->base->path);
+ array_pop($stack); // discard last segment
+ $stack = $this->_collapseStack($stack); // do pre-parsing
+ $this->basePathStack = $stack;
+ return true;
+ }
+ public function filter(&$uri, $config, $context) {
+ if (is_null($this->base)) return true; // abort early
+ if (
+ $uri->path === '' && is_null($uri->scheme) &&
+ is_null($uri->host) && is_null($uri->query) && is_null($uri->fragment)
+ ) {
+ // reference to current document
+ $uri = clone $this->base;
+ return true;
+ }
+ if (!is_null($uri->scheme)) {
+ // absolute URI already: don't change
+ if (!is_null($uri->host)) return true;
+ $scheme_obj = $uri->getSchemeObj($config, $context);
+ if (!$scheme_obj) {
+ // scheme not recognized
+ return false;
+ }
+ if (!$scheme_obj->hierarchical) {
+ // non-hierarchal URI with explicit scheme, don't change
+ return true;
+ }
+ // special case: had a scheme but always is hierarchical and had no authority
+ }
+ if (!is_null($uri->host)) {
+ // network path, don't bother
+ return true;
+ }
+ if ($uri->path === '') {
+ $uri->path = $this->base->path;
+ } elseif ($uri->path[0] !== '/') {
+ // relative path, needs more complicated processing
+ $stack = explode('/', $uri->path);
+ $new_stack = array_merge($this->basePathStack, $stack);
+ if ($new_stack[0] !== '' && !is_null($this->base->host)) {
+ array_unshift($new_stack, '');
+ }
+ $new_stack = $this->_collapseStack($new_stack);
+ $uri->path = implode('/', $new_stack);
+ } else {
+ // absolute path, but still we should collapse
+ $uri->path = implode('/', $this->_collapseStack(explode('/', $uri->path)));
+ }
+ // re-combine
+ $uri->scheme = $this->base->scheme;
+ if (is_null($uri->userinfo)) $uri->userinfo = $this->base->userinfo;
+ if (is_null($uri->host)) $uri->host = $this->base->host;
+ if (is_null($uri->port)) $uri->port = $this->base->port;
+ return true;
+ }
+
+ /**
+ * Resolve dots and double-dots in a path stack
+ */
+ private function _collapseStack($stack) {
+ $result = array();
+ $is_folder = false;
+ for ($i = 0; isset($stack[$i]); $i++) {
+ $is_folder = false;
+ // absorb an internally duplicated slash
+ if ($stack[$i] == '' && $i && isset($stack[$i+1])) continue;
+ if ($stack[$i] == '..') {
+ if (!empty($result)) {
+ $segment = array_pop($result);
+ if ($segment === '' && empty($result)) {
+ // error case: attempted to back out too far:
+ // restore the leading slash
+ $result[] = '';
+ } elseif ($segment === '..') {
+ $result[] = '..'; // cannot remove .. with ..
+ }
+ } else {
+ // relative path, preserve the double-dots
+ $result[] = '..';
+ }
+ $is_folder = true;
+ continue;
+ }
+ if ($stack[$i] == '.') {
+ // silently absorb
+ $is_folder = true;
+ continue;
+ }
+ $result[] = $stack[$i];
+ }
+ if ($is_folder) $result[] = '';
+ return $result;
+ }
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+class HTMLPurifier_URIFilter_Munge extends HTMLPurifier_URIFilter
+{
+ public $name = 'Munge';
+ public $post = true;
+ private $target, $parser, $doEmbed, $secretKey;
+
+ protected $replace = array();
+
+ public function prepare($config) {
+ $this->target = $config->get('URI.' . $this->name);
+ $this->parser = new HTMLPurifier_URIParser();
+ $this->doEmbed = $config->get('URI.MungeResources');
+ $this->secretKey = $config->get('URI.MungeSecretKey');
+ return true;
+ }
+ public function filter(&$uri, $config, $context) {
+ if ($context->get('EmbeddedURI', true) && !$this->doEmbed) return true;
+
+ $scheme_obj = $uri->getSchemeObj($config, $context);
+ if (!$scheme_obj) return true; // ignore unknown schemes, maybe another postfilter did it
+ if (is_null($uri->host) || empty($scheme_obj->browsable)) {
+ return true;
+ }
+ // don't redirect if target host is our host
+ if ($uri->host === $config->getDefinition('URI')->host) {
+ return true;
+ }
+
+ $this->makeReplace($uri, $config, $context);
+ $this->replace = array_map('rawurlencode', $this->replace);
+
+ $new_uri = strtr($this->target, $this->replace);
+ $new_uri = $this->parser->parse($new_uri);
+ // don't redirect if the target host is the same as the
+ // starting host
+ if ($uri->host === $new_uri->host) return true;
+ $uri = $new_uri; // overwrite
+ return true;
+ }
+
+ protected function makeReplace($uri, $config, $context) {
+ $string = $uri->toString();
+ // always available
+ $this->replace['%s'] = $string;
+ $this->replace['%r'] = $context->get('EmbeddedURI', true);
+ $token = $context->get('CurrentToken', true);
+ $this->replace['%n'] = $token ? $token->name : null;
+ $this->replace['%m'] = $context->get('CurrentAttr', true);
+ $this->replace['%p'] = $context->get('CurrentCSSProperty', true);
+ // not always available
+ if ($this->secretKey) $this->replace['%t'] = sha1($this->secretKey . ':' . $string);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Parses a URI into the components and fragment identifier as specified
+ * by RFC 3986.
+ */
+class HTMLPurifier_URIParser
+{
+
+ /**
+ * Instance of HTMLPurifier_PercentEncoder to do normalization with.
+ */
+ protected $percentEncoder;
+
+ public function __construct() {
+ $this->percentEncoder = new HTMLPurifier_PercentEncoder();
+ }
+
+ /**
+ * Parses a URI.
+ * @param $uri string URI to parse
+ * @return HTMLPurifier_URI representation of URI. This representation has
+ * not been validated yet and may not conform to RFC.
+ */
+ public function parse($uri) {
+
+ $uri = $this->percentEncoder->normalize($uri);
+
+ // Regexp is as per Appendix B.
+ // Note that ["<>] are an addition to the RFC's recommended
+ // characters, because they represent external delimeters.
+ $r_URI = '!'.
+ '(([^:/?#"<>]+):)?'. // 2. Scheme
+ '(//([^/?#"<>]*))?'. // 4. Authority
+ '([^?#"<>]*)'. // 5. Path
+ '(\?([^#"<>]*))?'. // 7. Query
+ '(#([^"<>]*))?'. // 8. Fragment
+ '!';
+
+ $matches = array();
+ $result = preg_match($r_URI, $uri, $matches);
+
+ if (!$result) return false; // *really* invalid URI
+
+ // seperate out parts
+ $scheme = !empty($matches[1]) ? $matches[2] : null;
+ $authority = !empty($matches[3]) ? $matches[4] : null;
+ $path = $matches[5]; // always present, can be empty
+ $query = !empty($matches[6]) ? $matches[7] : null;
+ $fragment = !empty($matches[8]) ? $matches[9] : null;
+
+ // further parse authority
+ if ($authority !== null) {
+ $r_authority = "/^((.+?)@)?(\[[^\]]+\]|[^:]*)(:(\d*))?/";
+ $matches = array();
+ preg_match($r_authority, $authority, $matches);
+ $userinfo = !empty($matches[1]) ? $matches[2] : null;
+ $host = !empty($matches[3]) ? $matches[3] : '';
+ $port = !empty($matches[4]) ? (int) $matches[5] : null;
+ } else {
+ $port = $host = $userinfo = null;
+ }
+
+ return new HTMLPurifier_URI(
+ $scheme, $userinfo, $host, $port, $path, $query, $fragment);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validator for the components of a URI for a specific scheme
+ */
+class HTMLPurifier_URIScheme
+{
+
+ /**
+ * Scheme's default port (integer)
+ */
+ public $default_port = null;
+
+ /**
+ * Whether or not URIs of this schem are locatable by a browser
+ * http and ftp are accessible, while mailto and news are not.
+ */
+ public $browsable = false;
+
+ /**
+ * Whether or not the URI always uses <hier_part>, resolves edge cases
+ * with making relative URIs absolute
+ */
+ public $hierarchical = false;
+
+ /**
+ * Validates the components of a URI
+ * @note This implementation should be called by children if they define
+ * a default port, as it does port processing.
+ * @param $uri Instance of HTMLPurifier_URI
+ * @param $config HTMLPurifier_Config object
+ * @param $context HTMLPurifier_Context object
+ * @return Bool success or failure
+ */
+ public function validate(&$uri, $config, $context) {
+ if ($this->default_port == $uri->port) $uri->port = null;
+ return true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates ftp (File Transfer Protocol) URIs as defined by generic RFC 1738.
+ */
+class HTMLPurifier_URIScheme_ftp extends HTMLPurifier_URIScheme {
+
+ public $default_port = 21;
+ public $browsable = true; // usually
+ public $hierarchical = true;
+
+ public function validate(&$uri, $config, $context) {
+ parent::validate($uri, $config, $context);
+ $uri->query = null;
+
+ // typecode check
+ $semicolon_pos = strrpos($uri->path, ';'); // reverse
+ if ($semicolon_pos !== false) {
+ $type = substr($uri->path, $semicolon_pos + 1); // no semicolon
+ $uri->path = substr($uri->path, 0, $semicolon_pos);
+ $type_ret = '';
+ if (strpos($type, '=') !== false) {
+ // figure out whether or not the declaration is correct
+ list($key, $typecode) = explode('=', $type, 2);
+ if ($key !== 'type') {
+ // invalid key, tack it back on encoded
+ $uri->path .= '%3B' . $type;
+ } elseif ($typecode === 'a' || $typecode === 'i' || $typecode === 'd') {
+ $type_ret = ";type=$typecode";
+ }
+ } else {
+ $uri->path .= '%3B' . $type;
+ }
+ $uri->path = str_replace(';', '%3B', $uri->path);
+ $uri->path .= $type_ret;
+ }
+
+ return true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates http (HyperText Transfer Protocol) as defined by RFC 2616
+ */
+class HTMLPurifier_URIScheme_http extends HTMLPurifier_URIScheme {
+
+ public $default_port = 80;
+ public $browsable = true;
+ public $hierarchical = true;
+
+ public function validate(&$uri, $config, $context) {
+ parent::validate($uri, $config, $context);
+ $uri->userinfo = null;
+ return true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates https (Secure HTTP) according to http scheme.
+ */
+class HTMLPurifier_URIScheme_https extends HTMLPurifier_URIScheme_http {
+
+ public $default_port = 443;
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+// VERY RELAXED! Shouldn't cause problems, not even Firefox checks if the
+// email is valid, but be careful!
+
+/**
+ * Validates mailto (for E-mail) according to RFC 2368
+ * @todo Validate the email address
+ * @todo Filter allowed query parameters
+ */
+
+class HTMLPurifier_URIScheme_mailto extends HTMLPurifier_URIScheme {
+
+ public $browsable = false;
+
+ public function validate(&$uri, $config, $context) {
+ parent::validate($uri, $config, $context);
+ $uri->userinfo = null;
+ $uri->host = null;
+ $uri->port = null;
+ // we need to validate path against RFC 2368's addr-spec
+ return true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates news (Usenet) as defined by generic RFC 1738
+ */
+class HTMLPurifier_URIScheme_news extends HTMLPurifier_URIScheme {
+
+ public $browsable = false;
+
+ public function validate(&$uri, $config, $context) {
+ parent::validate($uri, $config, $context);
+ $uri->userinfo = null;
+ $uri->host = null;
+ $uri->port = null;
+ $uri->query = null;
+ // typecode check needed on path
+ return true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Validates nntp (Network News Transfer Protocol) as defined by generic RFC 1738
+ */
+class HTMLPurifier_URIScheme_nntp extends HTMLPurifier_URIScheme {
+
+ public $default_port = 119;
+ public $browsable = false;
+
+ public function validate(&$uri, $config, $context) {
+ parent::validate($uri, $config, $context);
+ $uri->userinfo = null;
+ $uri->query = null;
+ return true;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Registry for retrieving specific URI scheme validator objects.
+ */
+class HTMLPurifier_URISchemeRegistry
+{
+
+ /**
+ * Retrieve sole instance of the registry.
+ * @param $prototype Optional prototype to overload sole instance with,
+ * or bool true to reset to default registry.
+ * @note Pass a registry object $prototype with a compatible interface and
+ * the function will copy it and return it all further times.
+ */
+ public static function instance($prototype = null) {
+ static $instance = null;
+ if ($prototype !== null) {
+ $instance = $prototype;
+ } elseif ($instance === null || $prototype == true) {
+ $instance = new HTMLPurifier_URISchemeRegistry();
+ }
+ return $instance;
+ }
+
+ /**
+ * Cache of retrieved schemes.
+ */
+ protected $schemes = array();
+
+ /**
+ * Retrieves a scheme validator object
+ * @param $scheme String scheme name like http or mailto
+ * @param $config HTMLPurifier_Config object
+ * @param $config HTMLPurifier_Context object
+ */
+ public function getScheme($scheme, $config, $context) {
+ if (!$config) $config = HTMLPurifier_Config::createDefault();
+
+ // important, otherwise attacker could include arbitrary file
+ $allowed_schemes = $config->get('URI.AllowedSchemes');
+ if (!$config->get('URI.OverrideAllowedSchemes') &&
+ !isset($allowed_schemes[$scheme])
+ ) {
+ return;
+ }
+
+ if (isset($this->schemes[$scheme])) return $this->schemes[$scheme];
+ if (!isset($allowed_schemes[$scheme])) return;
+
+ $class = 'HTMLPurifier_URIScheme_' . $scheme;
+ if (!class_exists($class)) return;
+ $this->schemes[$scheme] = new $class();
+ return $this->schemes[$scheme];
+ }
+
+ /**
+ * Registers a custom scheme to the cache, bypassing reflection.
+ * @param $scheme Scheme name
+ * @param $scheme_obj HTMLPurifier_URIScheme object
+ */
+ public function register($scheme, $scheme_obj) {
+ $this->schemes[$scheme] = $scheme_obj;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Class for converting between different unit-lengths as specified by
+ * CSS.
+ */
+class HTMLPurifier_UnitConverter
+{
+
+ const ENGLISH = 1;
+ const METRIC = 2;
+ const DIGITAL = 3;
+
+ /**
+ * Units information array. Units are grouped into measuring systems
+ * (English, Metric), and are assigned an integer representing
+ * the conversion factor between that unit and the smallest unit in
+ * the system. Numeric indexes are actually magical constants that
+ * encode conversion data from one system to the next, with a O(n^2)
+ * constraint on memory (this is generally not a problem, since
+ * the number of measuring systems is small.)
+ */
+ protected static $units = array(
+ self::ENGLISH => array(
+ 'px' => 3, // This is as per CSS 2.1 and Firefox. Your mileage may vary
+ 'pt' => 4,
+ 'pc' => 48,
+ 'in' => 288,
+ self::METRIC => array('pt', '0.352777778', 'mm'),
+ ),
+ self::METRIC => array(
+ 'mm' => 1,
+ 'cm' => 10,
+ self::ENGLISH => array('mm', '2.83464567', 'pt'),
+ ),
+ );
+
+ /**
+ * Minimum bcmath precision for output.
+ */
+ protected $outputPrecision;
+
+ /**
+ * Bcmath precision for internal calculations.
+ */
+ protected $internalPrecision;
+
+ /**
+ * Whether or not BCMath is available
+ */
+ private $bcmath;
+
+ public function __construct($output_precision = 4, $internal_precision = 10, $force_no_bcmath = false) {
+ $this->outputPrecision = $output_precision;
+ $this->internalPrecision = $internal_precision;
+ $this->bcmath = !$force_no_bcmath && function_exists('bcmul');
+ }
+
+ /**
+ * Converts a length object of one unit into another unit.
+ * @param HTMLPurifier_Length $length
+ * Instance of HTMLPurifier_Length to convert. You must validate()
+ * it before passing it here!
+ * @param string $to_unit
+ * Unit to convert to.
+ * @note
+ * About precision: This conversion function pays very special
+ * attention to the incoming precision of values and attempts
+ * to maintain a number of significant figure. Results are
+ * fairly accurate up to nine digits. Some caveats:
+ * - If a number is zero-padded as a result of this significant
+ * figure tracking, the zeroes will be eliminated.
+ * - If a number contains less than four sigfigs ($outputPrecision)
+ * and this causes some decimals to be excluded, those
+ * decimals will be added on.
+ */
+ public function convert($length, $to_unit) {
+
+ if (!$length->isValid()) return false;
+
+ $n = $length->getN();
+ $unit = $length->getUnit();
+
+ if ($n === '0' || $unit === false) {
+ return new HTMLPurifier_Length('0', false);
+ }
+
+ $state = $dest_state = false;
+ foreach (self::$units as $k => $x) {
+ if (isset($x[$unit])) $state = $k;
+ if (isset($x[$to_unit])) $dest_state = $k;
+ }
+ if (!$state || !$dest_state) return false;
+
+ // Some calculations about the initial precision of the number;
+ // this will be useful when we need to do final rounding.
+ $sigfigs = $this->getSigFigs($n);
+ if ($sigfigs < $this->outputPrecision) $sigfigs = $this->outputPrecision;
+
+ // BCMath's internal precision deals only with decimals. Use
+ // our default if the initial number has no decimals, or increase
+ // it by how ever many decimals, thus, the number of guard digits
+ // will always be greater than or equal to internalPrecision.
+ $log = (int) floor(log(abs($n), 10));
+ $cp = ($log < 0) ? $this->internalPrecision - $log : $this->internalPrecision; // internal precision
+
+ for ($i = 0; $i < 2; $i++) {
+
+ // Determine what unit IN THIS SYSTEM we need to convert to
+ if ($dest_state === $state) {
+ // Simple conversion
+ $dest_unit = $to_unit;
+ } else {
+ // Convert to the smallest unit, pending a system shift
+ $dest_unit = self::$units[$state][$dest_state][0];
+ }
+
+ // Do the conversion if necessary
+ if ($dest_unit !== $unit) {
+ $factor = $this->div(self::$units[$state][$unit], self::$units[$state][$dest_unit], $cp);
+ $n = $this->mul($n, $factor, $cp);
+ $unit = $dest_unit;
+ }
+
+ // Output was zero, so bail out early. Shouldn't ever happen.
+ if ($n === '') {
+ $n = '0';
+ $unit = $to_unit;
+ break;
+ }
+
+ // It was a simple conversion, so bail out
+ if ($dest_state === $state) {
+ break;
+ }
+
+ if ($i !== 0) {
+ // Conversion failed! Apparently, the system we forwarded
+ // to didn't have this unit. This should never happen!
+ return false;
+ }
+
+ // Pre-condition: $i == 0
+
+ // Perform conversion to next system of units
+ $n = $this->mul($n, self::$units[$state][$dest_state][1], $cp);
+ $unit = self::$units[$state][$dest_state][2];
+ $state = $dest_state;
+
+ // One more loop around to convert the unit in the new system.
+
+ }
+
+ // Post-condition: $unit == $to_unit
+ if ($unit !== $to_unit) return false;
+
+ // Useful for debugging:
+ //echo "<pre>n";
+ //echo "$n\nsigfigs = $sigfigs\nnew_log = $new_log\nlog = $log\nrp = $rp\n</pre>\n";
+
+ $n = $this->round($n, $sigfigs);
+ if (strpos($n, '.') !== false) $n = rtrim($n, '0');
+ $n = rtrim($n, '.');
+
+ return new HTMLPurifier_Length($n, $unit);
+ }
+
+ /**
+ * Returns the number of significant figures in a string number.
+ * @param string $n Decimal number
+ * @return int number of sigfigs
+ */
+ public function getSigFigs($n) {
+ $n = ltrim($n, '0+-');
+ $dp = strpos($n, '.'); // decimal position
+ if ($dp === false) {
+ $sigfigs = strlen(rtrim($n, '0'));
+ } else {
+ $sigfigs = strlen(ltrim($n, '0.')); // eliminate extra decimal character
+ if ($dp !== 0) $sigfigs--;
+ }
+ return $sigfigs;
+ }
+
+ /**
+ * Adds two numbers, using arbitrary precision when available.
+ */
+ private function add($s1, $s2, $scale) {
+ if ($this->bcmath) return bcadd($s1, $s2, $scale);
+ else return $this->scale($s1 + $s2, $scale);
+ }
+
+ /**
+ * Multiples two numbers, using arbitrary precision when available.
+ */
+ private function mul($s1, $s2, $scale) {
+ if ($this->bcmath) return bcmul($s1, $s2, $scale);
+ else return $this->scale($s1 * $s2, $scale);
+ }
+
+ /**
+ * Divides two numbers, using arbitrary precision when available.
+ */
+ private function div($s1, $s2, $scale) {
+ if ($this->bcmath) return bcdiv($s1, $s2, $scale);
+ else return $this->scale($s1 / $s2, $scale);
+ }
+
+ /**
+ * Rounds a number according to the number of sigfigs it should have,
+ * using arbitrary precision when available.
+ */
+ private function round($n, $sigfigs) {
+ $new_log = (int) floor(log(abs($n), 10)); // Number of digits left of decimal - 1
+ $rp = $sigfigs - $new_log - 1; // Number of decimal places needed
+ $neg = $n < 0 ? '-' : ''; // Negative sign
+ if ($this->bcmath) {
+ if ($rp >= 0) {
+ $n = bcadd($n, $neg . '0.' . str_repeat('0', $rp) . '5', $rp + 1);
+ $n = bcdiv($n, '1', $rp);
+ } else {
+ // This algorithm partially depends on the standardized
+ // form of numbers that comes out of bcmath.
+ $n = bcadd($n, $neg . '5' . str_repeat('0', $new_log - $sigfigs), 0);
+ $n = substr($n, 0, $sigfigs + strlen($neg)) . str_repeat('0', $new_log - $sigfigs + 1);
+ }
+ return $n;
+ } else {
+ return $this->scale(round($n, $sigfigs - $new_log - 1), $rp + 1);
+ }
+ }
+
+ /**
+ * Scales a float to $scale digits right of decimal point, like BCMath.
+ */
+ private function scale($r, $scale) {
+ if ($scale < 0) {
+ // The f sprintf type doesn't support negative numbers, so we
+ // need to cludge things manually. First get the string.
+ $r = sprintf('%.0f', (float) $r);
+ // Due to floating point precision loss, $r will more than likely
+ // look something like 4652999999999.9234. We grab one more digit
+ // than we need to precise from $r and then use that to round
+ // appropriately.
+ $precise = (string) round(substr($r, 0, strlen($r) + $scale), -1);
+ // Now we return it, truncating the zero that was rounded off.
+ return substr($precise, 0, -1) . str_repeat('0', -$scale + 1);
+ }
+ return sprintf('%.' . $scale . 'f', (float) $r);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Parses string representations into their corresponding native PHP
+ * variable type. The base implementation does a simple type-check.
+ */
+class HTMLPurifier_VarParser
+{
+
+ const STRING = 1;
+ const ISTRING = 2;
+ const TEXT = 3;
+ const ITEXT = 4;
+ const INT = 5;
+ const FLOAT = 6;
+ const BOOL = 7;
+ const LOOKUP = 8;
+ const ALIST = 9;
+ const HASH = 10;
+ const MIXED = 11;
+
+ /**
+ * Lookup table of allowed types. Mainly for backwards compatibility, but
+ * also convenient for transforming string type names to the integer constants.
+ */
+ static public $types = array(
+ 'string' => self::STRING,
+ 'istring' => self::ISTRING,
+ 'text' => self::TEXT,
+ 'itext' => self::ITEXT,
+ 'int' => self::INT,
+ 'float' => self::FLOAT,
+ 'bool' => self::BOOL,
+ 'lookup' => self::LOOKUP,
+ 'list' => self::ALIST,
+ 'hash' => self::HASH,
+ 'mixed' => self::MIXED
+ );
+
+ /**
+ * Lookup table of types that are string, and can have aliases or
+ * allowed value lists.
+ */
+ static public $stringTypes = array(
+ self::STRING => true,
+ self::ISTRING => true,
+ self::TEXT => true,
+ self::ITEXT => true,
+ );
+
+ /**
+ * Validate a variable according to type. Throws
+ * HTMLPurifier_VarParserException if invalid.
+ * It may return NULL as a valid type if $allow_null is true.
+ *
+ * @param $var Variable to validate
+ * @param $type Type of variable, see HTMLPurifier_VarParser->types
+ * @param $allow_null Whether or not to permit null as a value
+ * @return Validated and type-coerced variable
+ */
+ final public function parse($var, $type, $allow_null = false) {
+ if (is_string($type)) {
+ if (!isset(HTMLPurifier_VarParser::$types[$type])) {
+ throw new HTMLPurifier_VarParserException("Invalid type '$type'");
+ } else {
+ $type = HTMLPurifier_VarParser::$types[$type];
+ }
+ }
+ $var = $this->parseImplementation($var, $type, $allow_null);
+ if ($allow_null && $var === null) return null;
+ // These are basic checks, to make sure nothing horribly wrong
+ // happened in our implementations.
+ switch ($type) {
+ case (self::STRING):
+ case (self::ISTRING):
+ case (self::TEXT):
+ case (self::ITEXT):
+ if (!is_string($var)) break;
+ if ($type == self::ISTRING || $type == self::ITEXT) $var = strtolower($var);
+ return $var;
+ case (self::INT):
+ if (!is_int($var)) break;
+ return $var;
+ case (self::FLOAT):
+ if (!is_float($var)) break;
+ return $var;
+ case (self::BOOL):
+ if (!is_bool($var)) break;
+ return $var;
+ case (self::LOOKUP):
+ case (self::ALIST):
+ case (self::HASH):
+ if (!is_array($var)) break;
+ if ($type === self::LOOKUP) {
+ foreach ($var as $k) if ($k !== true) $this->error('Lookup table contains value other than true');
+ } elseif ($type === self::ALIST) {
+ $keys = array_keys($var);
+ if (array_keys($keys) !== $keys) $this->error('Indices for list are not uniform');
+ }
+ return $var;
+ case (self::MIXED):
+ return $var;
+ default:
+ $this->errorInconsistent(get_class($this), $type);
+ }
+ $this->errorGeneric($var, $type);
+ }
+
+ /**
+ * Actually implements the parsing. Base implementation is to not
+ * do anything to $var. Subclasses should overload this!
+ */
+ protected function parseImplementation($var, $type, $allow_null) {
+ return $var;
+ }
+
+ /**
+ * Throws an exception.
+ */
+ protected function error($msg) {
+ throw new HTMLPurifier_VarParserException($msg);
+ }
+
+ /**
+ * Throws an inconsistency exception.
+ * @note This should not ever be called. It would be called if we
+ * extend the allowed values of HTMLPurifier_VarParser without
+ * updating subclasses.
+ */
+ protected function errorInconsistent($class, $type) {
+ throw new HTMLPurifier_Exception("Inconsistency in $class: ".HTMLPurifier_VarParser::getTypeName($type)." not implemented");
+ }
+
+ /**
+ * Generic error for if a type didn't work.
+ */
+ protected function errorGeneric($var, $type) {
+ $vtype = gettype($var);
+ $this->error("Expected type ".HTMLPurifier_VarParser::getTypeName($type).", got $vtype");
+ }
+
+ static public function getTypeName($type) {
+ static $lookup;
+ if (!$lookup) {
+ // Lazy load the alternative lookup table
+ $lookup = array_flip(HTMLPurifier_VarParser::$types);
+ }
+ if (!isset($lookup[$type])) return 'unknown';
+ return $lookup[$type];
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Performs safe variable parsing based on types which can be used by
+ * users. This may not be able to represent all possible data inputs,
+ * however.
+ */
+class HTMLPurifier_VarParser_Flexible extends HTMLPurifier_VarParser
+{
+
+ protected function parseImplementation($var, $type, $allow_null) {
+ if ($allow_null && $var === null) return null;
+ switch ($type) {
+ // Note: if code "breaks" from the switch, it triggers a generic
+ // exception to be thrown. Specific errors can be specifically
+ // done here.
+ case self::MIXED :
+ case self::ISTRING :
+ case self::STRING :
+ case self::TEXT :
+ case self::ITEXT :
+ return $var;
+ case self::INT :
+ if (is_string($var) && ctype_digit($var)) $var = (int) $var;
+ return $var;
+ case self::FLOAT :
+ if ((is_string($var) && is_numeric($var)) || is_int($var)) $var = (float) $var;
+ return $var;
+ case self::BOOL :
+ if (is_int($var) && ($var === 0 || $var === 1)) {
+ $var = (bool) $var;
+ } elseif (is_string($var)) {
+ if ($var == 'on' || $var == 'true' || $var == '1') {
+ $var = true;
+ } elseif ($var == 'off' || $var == 'false' || $var == '0') {
+ $var = false;
+ } else {
+ throw new HTMLPurifier_VarParserException("Unrecognized value '$var' for $type");
+ }
+ }
+ return $var;
+ case self::ALIST :
+ case self::HASH :
+ case self::LOOKUP :
+ if (is_string($var)) {
+ // special case: technically, this is an array with
+ // a single empty string item, but having an empty
+ // array is more intuitive
+ if ($var == '') return array();
+ if (strpos($var, "\n") === false && strpos($var, "\r") === false) {
+ // simplistic string to array method that only works
+ // for simple lists of tag names or alphanumeric characters
+ $var = explode(',',$var);
+ } else {
+ $var = preg_split('/(,|[\n\r]+)/', $var);
+ }
+ // remove spaces
+ foreach ($var as $i => $j) $var[$i] = trim($j);
+ if ($type === self::HASH) {
+ // key:value,key2:value2
+ $nvar = array();
+ foreach ($var as $keypair) {
+ $c = explode(':', $keypair, 2);
+ if (!isset($c[1])) continue;
+ $nvar[$c[0]] = $c[1];
+ }
+ $var = $nvar;
+ }
+ }
+ if (!is_array($var)) break;
+ $keys = array_keys($var);
+ if ($keys === array_keys($keys)) {
+ if ($type == self::ALIST) return $var;
+ elseif ($type == self::LOOKUP) {
+ $new = array();
+ foreach ($var as $key) {
+ $new[$key] = true;
+ }
+ return $new;
+ } else break;
+ }
+ if ($type === self::LOOKUP) {
+ foreach ($var as $key => $value) {
+ $var[$key] = true;
+ }
+ }
+ return $var;
+ default:
+ $this->errorInconsistent(__CLASS__, $type);
+ }
+ $this->errorGeneric($var, $type);
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * This variable parser uses PHP's internal code engine. Because it does
+ * this, it can represent all inputs; however, it is dangerous and cannot
+ * be used by users.
+ */
+class HTMLPurifier_VarParser_Native extends HTMLPurifier_VarParser
+{
+
+ protected function parseImplementation($var, $type, $allow_null) {
+ return $this->evalExpression($var);
+ }
+
+ protected function evalExpression($expr) {
+ $var = null;
+ $result = eval("\$var = $expr;");
+ if ($result === false) {
+ throw new HTMLPurifier_VarParserException("Fatal error in evaluated code");
+ }
+ return $var;
+ }
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+<?php
+
+/**
+ * Exception type for HTMLPurifier_VarParser
+ */
+class HTMLPurifier_VarParserException extends HTMLPurifier_Exception
+{
+
+}
+
+// vim: et sw=4 sts=4
--- /dev/null
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the Lesser GPL. It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+
+ Preamble
+
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+ <signature of Ty Coon>, 1 April 1990
+ Ty Coon, President of Vice
+
+That's all there is to it!
+
+ vim: et sw=4 sts=4
projects / quix0rs-gnu-social.git / commitdiff