<?php
/************************************************************************
- * MXChange v0.2.1 Start: 09/20/2005 *
- * =============== Last change: 09/20/2005 *
+ * Mailer v0.2.1-FINAL Start: 09/20/2005 *
+ * =================== Last change: 09/20/2005 *
* *
* -------------------------------------------------------------------- *
* File : security_functions.php *
* $Date:: $ *
* $Tag:: 0.2.1-FINAL $ *
* $Author:: $ *
- * Needs to be in all Files and every File needs "svn propset *
- * svn:keywords Date Revision" (autoprobset!) at least!!!!!! *
* -------------------------------------------------------------------- *
- * Copyright (c) 2003 - 2008 by Roland Haeder *
- * For more information visit: http://www.mxchange.org *
+ * Copyright (c) 2003 - 2009 by Roland Haeder *
+ * Copyright (c) 2009 - 2013 by Mailer Developer Team *
+ * For more information visit: http://mxchange.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* MA 02110-1301 USA *
************************************************************************/
+// Run only once this security check/replacement
+if (defined('__SECURITY')) {
+ return;
+} // END - if
+
// Some security stuff...
-if (ereg(basename(__FILE__), $_SERVER['PHP_SELF'])) {
- $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), '/inc') + 4) . '/security.php';
- require($INC);
-}
+if (strpos($_SERVER['PHP_SELF'], basename(__FILE__)) !== FALSE) {
+ die();
+} // END - if
+
+// Include ctracker, recommended place!
+//require_once('ctracker.php');
+//require_once('ipfilter.php');
/**
* Function to secure input strings
*
- * @param $str The unsecured string
- * @param $strip Strip tags
- * @return $str A (hopefully) secured string against XSS and other bad things
+ * @param $str The unsecured string
+ * @param $stripTags Strip tags
+ * @return $str A (hopefully) secured string against XSS and other bad things
*/
-function secureString ($str, $strip=true) {
+function secureString ($str, $stripTags = TRUE, $encode = FALSE) {
// Shall we strip HTML code?
- if ($strip) $str = strip_tags($str);
+ if ($stripTags === TRUE) {
+ $str = strip_tags($str);
+ } // END - if
// Trim string
$str = trim($str);
- // Encode in entities
- $str = htmlentities($str, ENT_QUOTES);
+ // Encode in entities if requested
+ if ($encode === TRUE) {
+ // Encode in entities (this breakes UTF-8!)
+ $str = htmlentities($str, ENT_QUOTES);
+ } // END - if
+
+ // Replace {,} with entities
+ $str = str_replace(array('{', '}'), array('{', '}'), $str);
+
+ // Return result
return $str;
}
-// Run only once this security check/exchange
-if (defined('__SECURITY')) return;
+/**
+ * Secures $_SERVER['PHP_SELF'] against attacks
+ *
+ * @return void
+ */
+function securePhpSelf () {
+ // Did it run before?
+ if (isset($GLOBALS['php_self_secured'])) {
+ // Please do not call this twice!
+ die('PHP_SELF is already secured. Please do not call ' . __FUNCTION__ . ' for your self.');
+ } // END - if
+
+ // Secure the string
+ $_SERVER['PHP_SELF'] = secureString($_SERVER['PHP_SELF']);
+
+ // Split it up into path and filename
+ $phpSelfDirectory = dirname($_SERVER['PHP_SELF']);
+ $phpSelfFile = basename($_SERVER['PHP_SELF']);
+
+ // Check for a .php inside the $phpSelfDirectory...
+ while (strpos($phpSelfDirectory, '.php') !== FALSE) {
+ // Correct the dirname
+ $phpSelfDirectory = substr($phpSelfDirectory, 0, (strpos($phpSelfDirectory, '.php') + 4));
+ // Rewrite filename...
+ $phpSelfFile = basename($phpSelfDirectory);
+ // ... and dirname
+ $phpSelfDirectory = dirname($phpSelfDirectory);
+ } // END - while
+
+ // Put both together again and let's pray it is secured now...
+ $_SERVER['PHP_SELF'] = $phpSelfDirectory . '/' . $phpSelfFile;
+
+ // Did run...
+ $GLOBALS['php_self_secured'] = TRUE;
+
+ // Remove uneccessary variables
+ unset($phpSelfDirectory);
+ unset($phpSelfFile);
+}
+
+/**
+ * Checks if PHP_VERSION is newer or equal to given version string
+ *
+ * @param $versionString A PHP'ized version string which shall be compared with PHP_VERSION
+ * @return $isEqualNewer Wether the given version string is equal or newer to PHP_VERSION
+ */
+function isPhpVersionEqualNewer ($versionString) {
+ return (version_compare(PHP_VERSION, $versionString, '>='));
+}
+
+/**
+ * Detects caching in PHP
+ *
+ * @return void
+ */
+function detectPhpCaching () {
+ // Activate caching or transparent compressing when it is not already done
+ if ((isPhpVersionEqualNewer('4.0.4pl1')) && (strstr(getenv('HTTP_USER_AGENT'),'compatible') || (strstr(getenv('HTTP_USER_AGENT'), 'Mozilla')))) {
+ if ((extension_loaded('zlib')) && (function_exists('ob_start'))) {
+ // Start caching
+ $GLOBALS['php_caching'] = 'on';
+ ob_start();
+ } else {
+ // Extension not loaded or required function is missing
+ $GLOBALS['php_caching'] = '404';
+ }
+ } else {
+ // Old PHP version
+ $GLOBALS['php_caching'] = 'old';
+ }
+}
// Runtime/GPC quoting is off now...
-@set_magic_quotes_runtime(false);
-@ini_set('magic_quotes_gpc', false); // This may not work on some systems
+ini_set('magic_quotes_runtime', FALSE);
+ini_set('magic_quotes_gpc', FALSE); // This may not work on some systems
+
+/*
+ * No compatibility with Zend Engine 1, else an error like 'Implicit cloning'
+ * will be produced.
+ */
+if (isPhpVersionEqualNewer('5.0')) {
+ ini_set('zend.ze1_compatibility_mode', 'Off');
+} // END - if
// Check if important arrays are found and define them if missing
-if (!isset($_SERVER)) {
+if ((!isset($_SERVER)) || (!is_array($_SERVER))) {
global $_SERVER;
$_SERVER = $GLOBALS['_SERVER'];
-}
+} // END - if
-if (!isset($_GET)) {
+if ((!isset($_GET)) || (!is_array($_GET))) {
global $_GET;
$_GET = $GLOBALS['_GET'];
-}
+} // END - if
-if (!isset($_POST)) {
+if ((!isset($_POST)) || (!is_array($_POST))) {
global $_POST;
$_POST = $GLOBALS['_POST'];
-}
-
-// Include IP-Filter here
-//require("/usr/share/php/ipfilter.php");
+} // END - if
// Generate arrays which holds the relevante chars to replace
$GLOBALS['security_chars'] = array(
-// The chars we are looking for...
- 'from' => array("{", "}", '/', '.', "'", "$", '(', ')', '{--', '--}', "%", ';', "[", "]", ':', "--"),
-// ... and we will replace to.
+ // The chars we are looking for...
+ 'from' => array('/', '.', chr(39), '$', '(', ')', '{--', '--}', '{%', '%}', '{?', '?}', '%', ';', '[', ']', ':', '--', chr(92), chr(39), '<', '>'),
+ // ... and we will replace to.
'to' => array(
- "{OPEN_ANCHOR2}",
- "{CLOSE_ANCHOR2}",
- "{SLASH}",
- "{DOT}",
- "{QUOT}",
- "{DOLLAR}",
- "{OPEN_ANCHOR}",
- "{CLOSE_ANCHOR}",
- "{OPEN_TEMPLATE}",
- "{CLOSE_TEMPLATE}",
- "{PER}",
- "{SEMI}",
- "{OPEN_INDEX}",
- "{CLOSE_INDEX}",
- "{DBL_DOT}",
- "{COMMENT}"
- ),
- );
-
- // Characters allowed in URLs
- //
- // Note: Do not replace 'to' with 'from' and vise-versa! When you do this all booked URLs will be
- // rejected because of the {SLASH}, {DOT} and all below listed items inside the URL.
- $GLOBALS['url_chars'] = array(
- // Search for these secured characters
- 'to' => array("{SLASH}", "{DOT}", "{PER}", "{DBL_DOT}", "{COMMENT}"),
- // Replace with these characters
- 'from' => array('/', '.', "%", ':', "--")
- );
-
- // Overworked security part:
- if (is_array($_GET)) {
- foreach ($_GET as $seckey => $secvalue) {
- if (is_array($secvalue)) {
- // Throw arrays away...
- unset($_GET[$seckey]);
- } else {
- // Only variables are allowed (non-array) but we secure them all!
- foreach ($GLOBALS['security_chars']['from'] as $key => $char) {
- // Pass all through
- $_GET[$seckey] = str_replace($char , $GLOBALS['security_chars']['to'][$key], $_GET[$seckey]);
- }
-
- // Strip all other out
- $_GET[$seckey] = strip_tags($_GET[$seckey]);
- }
- }
- }
+ '{SLASH}',
+ '{DOT}',
+ '{QUOT}',
+ '{DOLLAR}',
+ '{OPEN_ANCHOR}',
+ '{CLOSE_ANCHOR}',
+ '{OPEN_LANGUAGE}',
+ '{CLOSE_LANGUAGE}',
+ '{OPEN_TEMPLATE}',
+ '{CLOSE_TEMPLATE}',
+ '{OPEN_CONFIG}',
+ '{CLOSE_CONFIG}',
+ '{PER}',
+ '{SEMI}',
+ '{OPEN_INDEX}',
+ '{CLOSE_INDEX}',
+ '{DBL_DOT}',
+ '{COMMENT}',
+ '{BACKSLASH}',
+ '{SQUOTE}',
+ '{OPEN_TAG}',
+ '{CLOSE_TAG}'
+ ),
+);
- if (basename($_SERVER['PHP_SELF']) != 'install.php') {
- // And POST data
- foreach ($_POST as $seckey => $secvalue) {
- if (!is_array($secvalue)) {
- // Only variables are allowed (non-array) to be secured...
- foreach ($GLOBALS['security_chars']['from'] as $key => $char) {
- // Pass all through
- $_POST[$seckey] = str_replace($char , $GLOBALS['security_chars']['to'][$key], $_POST[$seckey]);
- }
-
- // Strip all other out
- $_POST[$seckey] = strip_tags($_POST[$seckey]);
- }
- }
- }
+/*
+ * Characters allowed in booked URLs
+ *
+ * Note: Do not replace 'to' with 'from' and vise-versa! When you do this all booked URLs will be
+ * rejected because of the {SLASH}, {DOT} and all below listed items inside the URL.
+ */
+$GLOBALS['url_chars'] = array(
+ // Search for these secured characters
+ 'to' => array('{SLASH}', '{DOT}', '{PER}', '{DBL_DOT}', '{COMMENT}'),
+ // Replace with these characters
+ 'from' => array('/', '.', '%', ':', '--')
+);
- // Activate caching or transparent compressing when it is not already done
- if (!defined('_OB_CACHING')) {
- if (phpversion() >= '4.0.4pl1' && (strstr(getenv('HTTP_USER_AGENT'),'compatible') || (strstr(getenv('HTTP_USER_AGENT'), "Mozilla")))) {
- if ((extension_loaded('zlib')) && (function_exists('ob_start'))) {
- // Start caching
- define('_OB_CACHING', 'on');
- ob_start();
- } else {
- // Extension not loaded or required function is missing
- define('_OB_CACHING', '404');
- }
- } else {
- // Old PHP version
- define('_OB_CACHING', 'old');
- }
- }
+// Overworked security part:
+if (is_array($_GET)) {
+ foreach ($_GET as $seckey => $secvalue) {
+ if (is_array($secvalue)) {
+ // Throw arrays away ...
+ unset($_GET[$seckey]);
+ } else {
+ // Only variables are allowed (non-array) but we secure them all.
+ $_GET[$seckey] = str_replace($GLOBALS['security_chars']['from'], $GLOBALS['security_chars']['to'], $_GET[$seckey]);
- // At last secure the $_SERVER['PHP_SELF'] element
- $_SERVER['PHP_SELF'] = secureString($_SERVER['PHP_SELF']);
-
- // Split it up into path and filename
- $SELF_DIR = dirname($_SERVER['PHP_SELF']);
- $SELF_FILE = basename($_SERVER['PHP_SELF']);
-
- // Check for a .php inside the $SELF_DIR...
- while (ereg('.php', $SELF_DIR)) {
- // Correct the dirname
- $SELF_DIR = substr($SELF_DIR, 0, (strpos($SELF_DIR, '.php') + 4));
- // Rewrite filename...
- $SELF_FILE = basename($SELF_DIR);
- // ... and dirname
- $SELF_DIR = dirname($SELF_DIR);
+ // Strip all other out
+ $_GET[$seckey] = secureString($_GET[$seckey]);
}
+ } // END - foreach
+} // END - if
+
+// Secure also $_POST data (only simple, no replace)
+if (is_array($_POST)) {
+ // Secure only simple data
+ foreach ($_POST as $seckey => $secvalue) {
+ // Is it an array?
+ if (!is_array($secvalue)) {
+ // Strip all other out
+ $_POST[$seckey] = secureString($_POST[$seckey]);
+ } // END - if
+ } // END - foreach
+} // END - if
- // Put both together again and let's pray it is secured now...
- $_SERVER['PHP_SELF'] = $SELF_DIR.'/'.$SELF_FILE;
+// Detect PHP caching
+detectPhpCaching();
- // Remove uneccessary variables
- unset($SELF_DIR);
- unset($SELF_FILE);
+// At last secure the $_SERVER['PHP_SELF'] element
+securePhpSelf();
- // Security system loaded...
- define('__SECURITY', '1');
+// Security system loaded...
+define('__SECURITY', 1);
- //
- ?>
+// [EOF]
+?>
projects / mailer.git / blobdiff