<?php
/**
- * @file src/Util/XML.php
+ * @copyright Copyright (C) 2010-2022, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
*/
+
namespace Friendica\Util;
-use Friendica\Core\Logger;
+use DOMDocument;
+use DOMElement;
+use DOMNode;
use DOMXPath;
+use Friendica\Core\Logger;
+use Friendica\Core\System;
use SimpleXMLElement;
/**
- * @brief This class contain methods to work with XML data
+ * This class contain methods to work with XML data
*/
class XML
{
/**
- * @brief Creates an XML structure out of a given array
+ * Creates an XML structure out of a given array
*
* @param array $array The array of the XML structure that will be generated
* @param object $xml The createdXML will be returned by reference
* @param bool $remove_header Should the XML header be removed or not?
* @param array $namespaces List of namespaces
* @param bool $root interally used parameter. Mustn't be used from outside.
- *
- * @return string The created XML
+ * @return void
*/
- public static function fromArray($array, &$xml, $remove_header = false, $namespaces = [], $root = true)
+ public static function fromArray(array $array, &$xml, bool $remove_header = false, array $namespaces = [], bool $root = true)
{
if ($root) {
foreach ($array as $key => $value) {
foreach ($namespaces as $nskey => $nsvalue) {
- $key .= " xmlns".($nskey == "" ? "":":").$nskey.'="'.$nsvalue.'"';
+ $key .= ' xmlns' . ($nskey == '' ? '' : ':') . $nskey . '="' . $nsvalue . '"';
}
if (is_array($value)) {
- $root = new SimpleXMLElement("<".$key."/>");
+ $root = new SimpleXMLElement('<' . $key . '/>');
self::fromArray($value, $root, $remove_header, $namespaces, false);
} else {
- $root = new SimpleXMLElement("<".$key.">".xmlify($value)."</".$key.">");
+ $root = new SimpleXMLElement('<' . $key . '>' . self::escape($value ?? '') . '</' . $key . '>');
}
$dom = dom_import_simplexml($root)->ownerDocument;
continue;
}
- $element_parts = explode(":", $key);
+ $element_parts = explode(':', $key);
if ((count($element_parts) > 1) && isset($namespaces[$element_parts[0]])) {
$namespace = $namespaces[$element_parts[0]];
- } elseif (isset($namespaces[""])) {
- $namespace = $namespaces[""];
+ } elseif (isset($namespaces[''])) {
+ $namespace = $namespaces[''];
} else {
$namespace = null;
}
$key = $element_parts[1];
}
- if (substr($key, 0, 11) == "@attributes") {
+ if (substr($key, 0, 11) == '@attributes') {
if (!isset($element) || !is_array($value)) {
continue;
}
foreach ($value as $attr_key => $attr_value) {
- $element_parts = explode(":", $attr_key);
+ $element_parts = explode(':', $attr_key);
if ((count($element_parts) > 1) && isset($namespaces[$element_parts[0]])) {
$namespace = $namespaces[$element_parts[0]];
} else {
}
if (!is_array($value)) {
- $element = $xml->addChild($key, xmlify($value), $namespace);
+ $element = $xml->addChild($key, self::escape($value ?? ''), $namespace);
} elseif (is_array($value)) {
$element = $xml->addChild($key, null, $namespace);
self::fromArray($value, $element, $remove_header, $namespaces, false);
}
/**
- * @brief Copies an XML object
+ * Copies an XML object
*
* @param object $source The XML source
* @param object $target The XML target
* @param string $elementname Name of the XML element of the target
* @return void
*/
- public static function copy(&$source, &$target, $elementname)
+ public static function copy(&$source, &$target, string $elementname)
{
if (count($source->children()) == 0) {
- $target->addChild($elementname, xmlify($source));
+ $target->addChild($elementname, self::escape($source));
} else {
$child = $target->addChild($elementname);
foreach ($source->children() as $childfield => $childentry) {
}
/**
- * @brief Create an XML element
+ * Create an XML element
*
- * @param object $doc XML root
- * @param string $element XML element name
- * @param string $value XML value
- * @param array $attributes array containing the attributes
+ * @param DOMDocument $doc XML root
+ * @param string $element XML element name
+ * @param string $value XML value
+ * @param array $attributes array containing the attributes
*
- * @return object XML element object
+ * @return \DOMElement XML element object
*/
- public static function createElement($doc, $element, $value = "", $attributes = [])
+ public static function createElement(DOMDocument $doc, string $element, string $value = '', array $attributes = []): DOMElement
{
- $element = $doc->createElement($element, xmlify($value));
+ $element = $doc->createElement($element, self::escape($value));
foreach ($attributes as $key => $value) {
$attribute = $doc->createAttribute($key);
- $attribute->value = xmlify($value);
+ $attribute->value = self::escape($value ?? '');
$element->appendChild($attribute);
}
return $element;
}
/**
- * @brief Create an XML and append it to the parent object
+ * Create an XML and append it to the parent object
*
- * @param object $doc XML root
+ * @param DOMDocument $doc XML root
* @param object $parent parent object
* @param string $element XML element name
* @param string $value XML value
* @param array $attributes array containing the attributes
* @return void
*/
- public static function addElement($doc, $parent, $element, $value = "", $attributes = [])
+ public static function addElement(DOMDocument $doc, $parent, string $element, string $value = '', array $attributes = [])
{
$element = self::createElement($doc, $element, $value, $attributes);
$parent->appendChild($element);
}
/**
- * @brief Convert an XML document to a normalised, case-corrected array
+ * Convert an XML document to a normalised, case-corrected array
* used by webfinger
*
* @param object $xml_element The XML document
*
* @return array | string The array from the xml element or the string
*/
- public static function elementToArray($xml_element, &$recursion_depth = 0)
+ public static function elementToArray($xml_element, int &$recursion_depth = 0)
{
// If we're getting too deep, bail out
if ($recursion_depth > 512) {
if (is_array($xml_element)) {
$result_array = [];
if (count($xml_element) <= 0) {
- return (trim(strval($xml_element_copy)));
+ return trim(strval($xml_element_copy));
}
foreach ($xml_element as $key => $value) {
];
}
- return ($result_array);
+ return $result_array;
} else {
- return (trim(strval($xml_element)));
+ return trim(strval($xml_element));
}
}
/**
- * @brief Convert the given XML text to an array in the XML structure.
+ * Convert the given XML text to an array in the XML structure.
*
* Xml::toArray() will convert the given XML text to an array in the XML structure.
* Link: http://www.bin-co.com/php/scripts/xml2array/
* (namespaces, lowercase tags, get_attribute default changed, more...)
*
* Examples: $array = Xml::toArray(file_get_contents('feed.xml'));
- * $array = Xml::toArray(file_get_contents('feed.xml', true, 1, 'attribute'));
+ * $array = Xml::toArray(file_get_contents('feed.xml', true, 1, 'attribute'));
*
- * @param object $contents The XML text
- * @param boolean $namespaces True or false include namespace information
- * in the returned array as array elements.
- * @param integer $get_attributes 1 or 0. If this is 1 the function will get the attributes as well as the tag values -
- * this results in a different array structure in the return value.
- * @param string $priority Can be 'tag' or 'attribute'. This will change the way the resulting
- * array sturcture. For 'tag', the tags are given more importance.
+ * @param string $contents The XML text
+ * @param boolean $namespaces True or false include namespace information
+ * in the returned array as array elements.
+ * @param integer $get_attributes 1 or 0. If this is 1 the function will get the attributes as well as the tag values -
+ * this results in a different array structure in the return value.
+ * @param string $priority Can be 'tag' or 'attribute'. This will change the way the resulting
+ * array sturcture. For 'tag', the tags are given more importance.
*
* @return array The parsed XML in an array form. Use print_r() to see the resulting array structure.
+ * @throws \Exception
*/
- public static function toArray($contents, $namespaces = true, $get_attributes = 1, $priority = 'attribute')
+ public static function toArray(string $contents, bool $namespaces = true, int $get_attributes = 1, string $priority = 'attribute'): array
{
if (!$contents) {
return [];
}
if (!function_exists('xml_parser_create')) {
- Logger::log('Xml::toArray: parser function missing');
+ Logger::notice('Xml::toArray: parser function missing');
return [];
}
}
if (! $parser) {
- Logger::log('Xml::toArray: xml_parser_create: no resource');
+ Logger::notice('Xml::toArray: xml_parser_create: no resource');
return [];
}
@xml_parser_free($parser);
if (! $xml_values) {
- Logger::log('Xml::toArray: libxml: parse error: ' . $contents, Logger::DATA);
+ Logger::debug('Xml::toArray: libxml: parse error: ' . $contents);
foreach (libxml_get_errors() as $err) {
- Logger::log('libxml: parse: ' . $err->code . " at " . $err->line . ":" . $err->column . " : " . $err->message, Logger::DATA);
+ Logger::debug('libxml: parse: ' . $err->code . " at " . $err->line . ":" . $err->column . " : " . $err->message);
}
libxml_clear_errors();
- return;
+ return [];
}
//Initializations
$xml_array = [];
- $parents = [];
- $opened_tags = [];
- $arr = [];
$current = &$xml_array; // Reference
}
}
- return($xml_array);
+ return $xml_array;
}
/**
- * @brief Delete a node in a XML object
+ * Delete a node in a XML object
*
- * @param object $doc XML document
+ * @param DOMDocument $doc XML document
* @param string $node Node name
* @return void
*/
- public static function deleteNode(&$doc, $node)
+ public static function deleteNode(DOMDocument $doc, string $node)
{
$xpath = new DOMXPath($doc);
- $list = $xpath->query("//".$node);
+ $list = $xpath->query('//' . $node);
foreach ($list as $child) {
$child->parentNode->removeChild($child);
}
}
- public static function parseString($s, $strict = true)
+ /**
+ * Parse XML string
+ *
+ * @param string $s XML string to parse into object
+ * @param boolean $suppress_log Whether to supressing logging
+ * @return SimpleXMLElement|bool SimpleXMLElement or false on failure
+ */
+ public static function parseString(string $s, bool $suppress_log = false)
{
- // the "strict" parameter is deactivated
libxml_use_internal_errors(true);
$x = @simplexml_load_string($s);
if (!$x) {
- Logger::log('libxml: parse: error: ' . $s, Logger::DATA);
- foreach (libxml_get_errors() as $err) {
- Logger::log('libxml: parse: ' . $err->code." at ".$err->line.":".$err->column." : ".$err->message, Logger::DATA);
+ if (!$suppress_log) {
+ Logger::error('Error(s) while parsing XML string.', ['callstack' => System::callstack()]);
+ foreach (libxml_get_errors() as $err) {
+ Logger::info('libxml error', ['code' => $err->code, 'position' => $err->line . ":" . $err->column, 'message' => $err->message]);
+ }
+ Logger::debug('Erroring XML string', ['xml' => $s]);
}
libxml_clear_errors();
}
return $x;
}
- public static function getFirstNodeValue($xpath, $element, $context = null)
+ /**
+ * Gets first node value
+ *
+ * @param DOMXPath $xpath XPath object
+ * @param string $element Element name
+ * @param DOMNode $context Context object or NULL
+ * @return string XML node value or empty string on failure
+ */
+ public static function getFirstNodeValue(DOMXPath $xpath, string $element, DOMNode $context = null)
{
- $result = $xpath->evaluate($element, $context);
+ $result = @$xpath->evaluate($element, $context);
if (!is_object($result)) {
return '';
}
return $first_item->nodeValue;
}
- public static function getFirstAttributes($xpath, $element, $context = null)
+ /**
+ * Gets first attributes
+ *
+ * @param DOMXPath $xpath XPath object
+ * @param string $element Element name
+ * @param DOMNode $context Context object or NULL
+ * @return ???|bool First element's attributes field or false on failure
+ */
+ public static function getFirstAttributes(DOMXPath $xpath, string $element, DOMNode $context = null)
{
- $result = $xpath->query($element, $context);
+ $result = @$xpath->query($element, $context);
if (!is_object($result)) {
return false;
}
return $first_item->attributes;
}
+ /**
+ * Gets first node's value
+ *
+ * @param DOMXPath $xpath XPath object
+ * @param string $element Element name
+ * @param DOMNode $context Context object or NULL
+ * @return string First value or empty string on failure
+ */
+ public static function getFirstValue(DOMXPath $xpath, string $element, DOMNode $context = null): string
+ {
+ $result = @$xpath->query($element, $context);
+ if (!is_object($result)) {
+ return '';
+ }
+
+ $first_item = $result->item(0);
+ if (!is_object($first_item)) {
+ return '';
+ }
+
+ return $first_item->nodeValue;
+ }
+
/**
* escape text ($str) for XML transport
+ *
* @param string $str
* @return string Escaped text.
+ * @todo Move this generic method to Util\Strings and also rewrite all other findingd
*/
- public static function xmlify($str)
+ public static function escape(string $str): string
{
- $buffer = htmlspecialchars($str, ENT_QUOTES, "UTF-8");
- $buffer = trim($buffer);
-
- return $buffer;
+ return trim(htmlspecialchars($str, ENT_QUOTES, 'UTF-8'));
}
/**
- * undo an xmlify
+ * Undo an escape
+ *
* @param string $s xml escaped text
* @return string unescaped text
+ * @todo Move this generic method to Util\Strings and also rewrite all other findingd
*/
- public static function unxmlify($s)
+ public static function unescape(string $s): string
{
- $ret = htmlspecialchars_decode($s, ENT_QUOTES);
- return $ret;
+ return htmlspecialchars_decode($s, ENT_QUOTES);
}
/**
- * apply xmlify() to all values of array $val, recursively
- * @param array $val
- * @return array
+ * Apply escape() to all values of array $val, recursively
+ *
+ * @param array|bool|string $val Value of type bool, array or string
+ * @return array|string Returns array if array provided or string in other cases
+ * @todo Move this generic method to Util\Strings
*/
- public static function arrayXmlify($val)
+ public static function arrayEscape($val)
{
if (is_bool($val)) {
- return $val?"true":"false";
+ return $val ? 'true' : 'false';
} elseif (is_array($val)) {
- return array_map('XML::arrayXmlify', $val);
+ return array_map('XML::arrayEscape', $val);
}
- return self::xmlify((string) $val);
+
+ return self::escape((string) $val);
}
}
projects / friendica.git / blobdiff