diff options
Diffstat (limited to 'system/core')
| -rwxr-xr-x | system/core/CodeIgniter.php | 2 | ||||
| -rw-r--r-- | system/core/Common.php | 2 | ||||
| -rwxr-xr-x | system/core/Lang.php | 2 | ||||
| -rw-r--r-- | system/core/Loader.php | 12 | ||||
| -rwxr-xr-x | system/core/Security.php | 279 |
5 files changed, 114 insertions, 183 deletions
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php index cb5d439bd..7af3c485d 100755 --- a/system/core/CodeIgniter.php +++ b/system/core/CodeIgniter.php @@ -267,7 +267,7 @@ $method = $RTR->fetch_method(); if ( ! class_exists($class) - OR strpos($method, '_', 1) === 0 + OR strpos($method, '_') === 0 OR in_array(strtolower($method), array_map('strtolower', get_class_methods('CI_Controller'))) ) { diff --git a/system/core/Common.php b/system/core/Common.php index 1f59c02d7..2f9c4ff43 100644 --- a/system/core/Common.php +++ b/system/core/Common.php @@ -199,7 +199,7 @@ if ( ! function_exists('load_class')) */ if ( ! function_exists('is_loaded')) { - function is_loaded($class = '') + function &is_loaded($class = '') { static $_is_loaded = array(); diff --git a/system/core/Lang.php b/system/core/Lang.php index 088cb6c9c..c40a6856e 100755 --- a/system/core/Lang.php +++ b/system/core/Lang.php @@ -130,7 +130,7 @@ class CI_Lang { } $this->is_loaded[] = $langfile; - $this->language = $this->language + $lang; + $this->language = array_merge($this->language, $lang); unset($lang); log_message('debug', 'Language file loaded: language/'.$idiom.'/'.$langfile); diff --git a/system/core/Loader.php b/system/core/Loader.php index 272fe4291..12daaa928 100644 --- a/system/core/Loader.php +++ b/system/core/Loader.php @@ -250,10 +250,10 @@ class CI_Loader { if (($last_slash = strrpos($model, '/')) !== FALSE) { // The path is in front of the last slash - $path = substr($model, 0, $last_slash + 1); + $path = substr($model, 0, ++$last_slash); // And the model name behind it - $model = substr($model, $last_slash + 1); + $model = substr($model, $last_slash); } if ($name == '') @@ -833,10 +833,9 @@ class CI_Loader { // If the PHP installation does not support short tags we'll // do a little string replacement, changing the short tags // to standard PHP echo statements. - if ((bool) @ini_get('short_open_tag') === FALSE AND config_item('rewrite_short_tags') == TRUE) { - echo eval('?>'.preg_replace("/;*\s*\?>/", "; ?>", str_replace('<?=', '<?php echo ', file_get_contents($_ci_path)))); + echo eval('?>'.preg_replace('/;*\s*\?>/', '; ?>', str_replace('<?=', '<?php echo ', file_get_contents($_ci_path)))); } else { @@ -861,7 +860,6 @@ class CI_Loader { * we are beyond the first level of output buffering so that * it can be seen and included properly by the first included * template and any subsequent ones. Oy! - * */ if (ob_get_level() > $this->_ci_ob_level + 1) { @@ -1233,13 +1231,13 @@ class CI_Loader { { if ( ! is_array($filename)) { - return array(strtolower(str_replace('.php', '', str_replace($extension, '', $filename)).$extension)); + return array(strtolower(str_replace(array($extension, '.php'), '', $filename).$extension)); } else { foreach ($filename as $key => $val) { - $filename[$key] = strtolower(str_replace('.php', '', str_replace($extension, '', $val)).$extension); + $filename[$key] = strtolower(str_replace(array($extension, '.php'), '', $val).$extension); } return $filename; diff --git a/system/core/Security.php b/system/core/Security.php index f7998da60..1007f61f4 100755 --- a/system/core/Security.php +++ b/system/core/Security.php @@ -1,13 +1,13 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * * An open source application development framework for PHP 5.1.6 or newer * * NOTICE OF LICENSE - * + * * Licensed under the Open Software License version 3.0 - * + * * This source file is subject to the Open Software License (OSL 3.0) that is * bundled with this package in the files license.txt / license.rst. It is * also available through the world wide web at this URL: @@ -42,7 +42,6 @@ class CI_Security { * Random Hash for protecting URLs * * @var string - * @access protected */ protected $_xss_hash = ''; @@ -50,7 +49,6 @@ class CI_Security { * Random Hash for Cross Site Request Forgery Protection Cookie * * @var string - * @access protected */ protected $_csrf_hash = ''; @@ -59,7 +57,6 @@ class CI_Security { * Defaults to two hours (in seconds) * * @var int - * @access protected */ protected $_csrf_expire = 7200; @@ -67,7 +64,6 @@ class CI_Security { * Token name for Cross Site Request Forgery Protection Cookie * * @var string - * @access protected */ protected $_csrf_token_name = 'ci_csrf_token'; @@ -75,46 +71,39 @@ class CI_Security { * Cookie name for Cross Site Request Forgery Protection Cookie * * @var string - * @access protected */ - protected $_csrf_cookie_name = 'ci_csrf_token'; + protected $_csrf_cookie_name = 'ci_csrf_token'; /** * List of never allowed strings * * @var array - * @access protected */ - protected $_never_allowed_str = array( - 'document.cookie' => '[removed]', - 'document.write' => '[removed]', - '.parentNode' => '[removed]', - '.innerHTML' => '[removed]', - 'window.location' => '[removed]', - '-moz-binding' => '[removed]', - '<!--' => '<!--', - '-->' => '-->', - '<![CDATA[' => '<![CDATA[', - '<comment>' => '<comment>' - ); + 'document.cookie' => '[removed]', + 'document.write' => '[removed]', + '.parentNode' => '[removed]', + '.innerHTML' => '[removed]', + 'window.location' => '[removed]', + '-moz-binding' => '[removed]', + '<!--' => '<!--', + '-->' => '-->', + '<![CDATA[' => '<![CDATA[', + '<comment>' => '<comment>' + ); /** * List of never allowed regex replacement * * @var array - * @access protected */ protected $_never_allowed_regex = array( - "javascript\s*:" => '[removed]', - "expression\s*(\(|&\#40;)" => '[removed]', // CSS and IE - "vbscript\s*:" => '[removed]', // IE, surprise! - "Redirect\s+302" => '[removed]' - ); + 'javascript\s*:', + 'expression\s*(\(|&\#40;)', // CSS and IE + 'vbscript\s*:', // IE, surprise! + 'Redirect\s+302' + ); - /** - * Constructor - */ public function __construct() { // CSRF config @@ -135,7 +124,7 @@ class CI_Security { // Set the CSRF hash $this->_csrf_set_hash(); - log_message('debug', "Security Class Initialized"); + log_message('debug', 'Security Class Initialized'); } // -------------------------------------------------------------------- @@ -148,7 +137,7 @@ class CI_Security { public function csrf_verify() { // If no POST data exists we will set the CSRF cookie - if (count($_POST) == 0) + if (count($_POST) === 0) { return $this->csrf_set_cookie(); } @@ -164,20 +153,13 @@ class CI_Security { } // Do the tokens exist in both the _POST and _COOKIE arrays? - if ( ! isset($_POST[$this->_csrf_token_name]) OR - ! isset($_COOKIE[$this->_csrf_cookie_name])) + if ( ! isset($_POST[$this->_csrf_token_name]) OR ! isset($_COOKIE[$this->_csrf_cookie_name]) + OR $_POST[$this->_csrf_token_name] != $_COOKIE[$this->_csrf_cookie_name]) // Do the tokens match? { $this->csrf_show_error(); } - // Do the tokens match? - if ($_POST[$this->_csrf_token_name] != $_COOKIE[$this->_csrf_cookie_name]) - { - $this->csrf_show_error(); - } - - // We kill this since we're done and we don't want to - // polute the _POST array + // We kill this since we're done and we don't want to polute the _POST array unset($_POST[$this->_csrf_token_name]); // Regenerate on every submission? @@ -187,12 +169,11 @@ class CI_Security { unset($_COOKIE[$this->_csrf_cookie_name]); $this->_csrf_hash = ''; } - + $this->_csrf_set_hash(); $this->csrf_set_cookie(); - log_message('debug', "CSRF token verified"); - + log_message('debug', 'CSRF token verified'); return $this; } @@ -208,19 +189,13 @@ class CI_Security { $expire = time() + $this->_csrf_expire; $secure_cookie = (bool) config_item('cookie_secure'); - if ($secure_cookie) + if ($secure_cookie && ( ! isset($_SERVER['HTTPS']) OR $_SERVER['HTTPS'] == 'off' OR ! $_SERVER['HTTPS'])) { - $req = isset($_SERVER['HTTPS']) ? $_SERVER['HTTPS'] : FALSE; - - if ( ! $req OR $req == 'off') - { - return FALSE; - } + return FALSE; } setcookie($this->_csrf_cookie_name, $this->_csrf_hash, $expire, config_item('cookie_path'), config_item('cookie_domain'), $secure_cookie); - - log_message('debug', "CRSF cookie Set"); + log_message('debug', 'CRSF cookie Set'); return $this; } @@ -258,7 +233,7 @@ class CI_Security { * * Getter Method * - * @return string self::csrf_token_name + * @return string self::_csrf_token_name */ public function get_csrf_token_name() { @@ -278,7 +253,7 @@ class CI_Security { * the filter. * * Note: This function should only be used to deal with data - * upon submission. It's not something that should + * upon submission. It's not something that should * be used for general runtime processing. * * This function was based in part on some code and ideas I @@ -295,10 +270,7 @@ class CI_Security { */ public function xss_clean($str, $is_image = FALSE) { - /* - * Is the string an array? - * - */ + // Is the string an array? if (is_array($str)) { while (list($key) = each($str)) @@ -309,13 +281,8 @@ class CI_Security { return $str; } - /* - * Remove Invisible Characters - */ - $str = remove_invisible_characters($str); - - // Validate Entities in URLs - $str = $this->_validate_entities($str); + // Remove Invisible Characters and validate entities in URLs + $str = $this->_validate_entities(remove_invisible_characters($str)); /* * URL Decode @@ -325,7 +292,6 @@ class CI_Security { * <a href="http://%77%77%77%2E%67%6F%6F%67%6C%65%2E%63%6F%6D">Google</a> * * Note: Use rawurldecode() so it does not remove plus signs - * */ $str = rawurldecode($str); @@ -335,16 +301,11 @@ class CI_Security { * This permits our tests below to work reliably. * We only convert entities that are within tags since * these are the ones that will pose security problems. - * */ - $str = preg_replace_callback("/[a-z]+=([\'\"]).*?\\1/si", array($this, '_convert_attribute'), $str); + $str = preg_replace_callback('/<\w+.*?(?=>|<|$)/si', array($this, '_decode_entity'), $str); - $str = preg_replace_callback("/<\w+.*?(?=>|<|$)/si", array($this, '_decode_entity'), $str); - - /* - * Remove Invisible Characters Again! - */ + // Remove Invisible Characters Again! $str = remove_invisible_characters($str); /* @@ -355,15 +316,9 @@ class CI_Security { * NOTE: preg_replace was found to be amazingly slow here on * large blocks of data, so we use str_replace. */ + $str = str_replace("\t", ' ', $str); - if (strpos($str, "\t") !== FALSE) - { - $str = str_replace("\t", ' ', $str); - } - - /* - * Capture converted string for later comparison - */ + // Capture converted string for later comparison $converted_string = $str; // Remove Strings that are never allowed @@ -383,7 +338,7 @@ class CI_Security { // Images have a tendency to have the PHP short opening and // closing tags every so often so we skip those and only // do the long opening tags. - $str = preg_replace('/<\?(php)/i', "<?\\1", $str); + $str = preg_replace('/<\?(php)/i', '<?\\1', $str); } else { @@ -420,19 +375,19 @@ class CI_Security { { $original = $str; - if (preg_match("/<a/i", $str)) + if (preg_match('/<a/i', $str)) { - $str = preg_replace_callback("#<a\s+([^>]*?)(>|$)#si", array($this, '_js_link_removal'), $str); + $str = preg_replace_callback('#<a\s+([^>]*?)(>|$)#si', array($this, '_js_link_removal'), $str); } - if (preg_match("/<img/i", $str)) + if (preg_match('/<img/i', $str)) { - $str = preg_replace_callback("#<img\s+([^>]*?)(\s?/?>|$)#si", array($this, '_js_img_removal'), $str); + $str = preg_replace_callback('#<img\s+([^>]*?)(\s?/?>|$)#si', array($this, '_js_img_removal'), $str); } - if (preg_match("/script/i", $str) OR preg_match("/xss/i", $str)) + if (preg_match('/(script|xss)/i', $str)) { - $str = preg_replace("#<(/*)(script|xss)(.*?)\>#si", '[removed]', $str); + $str = preg_replace('#<(/*)(script|xss)(.*?)\>#si', '[removed]', $str); } } while($original != $str); @@ -459,14 +414,16 @@ class CI_Security { * * Similar to above, only instead of looking for * tags it looks for PHP and JavaScript commands - * that are disallowed. Rather than removing the + * that are disallowed. Rather than removing the * code, it simply converts the parenthesis to entities * rendering the code un-executable. * * For example: eval('some code') - * Becomes: eval('some code') + * Becomes: eval('some code') */ - $str = preg_replace('#(alert|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)\((.*?)\)#si', "\\1\\2(\\3)", $str); + $str = preg_replace('#(alert|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)\((.*?)\)#si', + '\\1\\2(\\3)', + $str); // Final clean up @@ -483,13 +440,12 @@ class CI_Security { * string post-removal of XSS, then it fails, as there was unwanted XSS * code found and removed/changed during processing. */ - if ($is_image === TRUE) { - return ($str === $converted_string) ? TRUE : FALSE; + return ($str === $converted_string); } - log_message('debug', "XSS Filtering completed"); + log_message('debug', 'XSS Filtering completed'); return $str; } @@ -521,7 +477,7 @@ class CI_Security { * The reason we are not using html_entity_decode() by itself is because * while it is not technically correct to leave out the semicolon * at the end of an entity most browsers will still interpret the entity - * correctly. html_entity_decode() does not convert entities without + * correctly. html_entity_decode() does not convert entities without * semicolons, so we are left with our own little solution here. Bummer. * * @param string @@ -557,38 +513,23 @@ class CI_Security { public function sanitize_filename($str, $relative_path = FALSE) { $bad = array( - "../", - "<!--", - "-->", - "<", - ">", - "'", - '"', - '&', - '$', - '#', - '{', - '}', - '[', - ']', - '=', - ';', - '?', - "%20", - "%22", - "%3c", // < - "%253c", // < - "%3e", // > - "%0e", // > - "%28", // ( - "%29", // ) - "%2528", // ( - "%26", // & - "%24", // $ - "%3f", // ? - "%3b", // ; - "%3d" // = - ); + '../', '<!--', '-->', '<', '>', + "'", '"', '&', '$', '#', + '{', '}', '[', ']', '=', + ';', '?', '%20', '%22', + '%3c', // < + '%253c', // < + '%3e', // > + '%0e', // > + '%28', // ( + '%29', // ) + '%2528', // ( + '%26', // & + '%24', // $ + '%3f', // ? + '%3b', // ; + '%3d' // = + ); if ( ! $relative_path) { @@ -641,26 +582,26 @@ class CI_Security { if ($is_image === TRUE) { /* - * Adobe Photoshop puts XML metadata into JFIF images, + * Adobe Photoshop puts XML metadata into JFIF images, * including namespacing, so we have to allow this for images. */ unset($evil_attributes[array_search('xmlns', $evil_attributes)]); } - + do { $count = 0; $attribs = array(); - + // find occurrences of illegal attribute strings without quotes - preg_match_all("/(".implode('|', $evil_attributes).")\s*=\s*([^\s]*)/is", $str, $matches, PREG_SET_ORDER); - + preg_match_all('/('.implode('|', $evil_attributes).')\s*=\s*([^\s]*)/is', $str, $matches, PREG_SET_ORDER); + foreach ($matches as $attr) { $attribs[] = preg_quote($attr[0], '/'); } - + // find occurrences of illegal attribute strings with quotes (042 and 047 are octal quotes) - preg_match_all("/(".implode('|', $evil_attributes).")\s*=\s*(\042|\047)([^\\2]*?)(\\2)/is", $str, $matches, PREG_SET_ORDER); + preg_match_all('/('.implode('|', $evil_attributes).')\s*=\s*(\042|\047)([^\\2]*?)(\\2)/is', $str, $matches, PREG_SET_ORDER); foreach ($matches as $attr) { @@ -670,11 +611,11 @@ class CI_Security { // replace illegal attribute strings that are inside an html tag if (count($attribs) > 0) { - $str = preg_replace("/<(\/?[^><]+?)([^A-Za-z\-])(".implode('|', $attribs).")([\s><])([><]*)/i", '<$1$2$4$5', $str, -1, $count); + $str = preg_replace('/<(\/?[^><]+?)([^A-Za-z\-])('.implode('|', $attribs).')([\s><])([><]*)/i', '<$1$2$4$5', $str, -1, $count); } - + } while ($count); - + return $str; } @@ -690,14 +631,9 @@ class CI_Security { */ protected function _sanitize_naughty_html($matches) { - // encode opening brace - $str = '<'.$matches[1].$matches[2].$matches[3]; - - // encode captured opening or closing brace to prevent recursive vectors - $str .= str_replace(array('>', '<'), array('>', '<'), - $matches[4]); - - return $str; + return '<'.$matches[1].$matches[2].$matches[3] // encode opening brace + // encode captured opening or closing brace to prevent recursive vectors: + . str_replace(array('>', '<'), array('>', '<'), $matches[4]); } // -------------------------------------------------------------------- @@ -715,9 +651,12 @@ class CI_Security { */ protected function _js_link_removal($match) { - $attributes = $this->_filter_attributes(str_replace(array('<', '>'), '', $match[1])); - - return str_replace($match[1], preg_replace("#href=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si", "", $attributes), $match[0]); + return str_replace($match[1], + preg_replace('#href=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si', + '', + $this->_filter_attributes(str_replace(array('<', '>'), '', $match[1])) + ), + $match[0]); } // -------------------------------------------------------------------- @@ -735,9 +674,12 @@ class CI_Security { */ protected function _js_img_removal($match) { - $attributes = $this->_filter_attributes(str_replace(array('<', '>'), '', $match[1])); - - return str_replace($match[1], preg_replace("#src=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si", "", $attributes), $match[0]); + return str_replace($match[1], + preg_replace('#src=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si', + '', + $this->_filter_attributes(str_replace(array('<', '>'), '', $match[1])) + ), + $match[0]); } // -------------------------------------------------------------------- @@ -768,12 +710,11 @@ class CI_Security { protected function _filter_attributes($str) { $out = ''; - if (preg_match_all('#\s*[a-z\-]+\s*=\s*(\042|\047)([^\\1]*?)\\1#is', $str, $matches)) { foreach ($matches[0] as $match) { - $out .= preg_replace("#/\*.*?\*/#s", '', $match); + $out .= preg_replace('#/\*.*?\*/#s', '', $match); } } @@ -811,33 +752,28 @@ class CI_Security { * Protect GET variables in URLs */ - // 901119URL5918AMP18930PROTECT8198 - - $str = preg_replace('|\&([a-z\_0-9\-]+)\=([a-z\_0-9\-]+)|i', $this->xss_hash()."\\1=\\2", $str); + // 901119URL5918AMP18930PROTECT8198 + $str = preg_replace('|\&([a-z\_0-9\-]+)\=([a-z\_0-9\-]+)|i', $this->xss_hash().'\\1=\\2', $str); /* * Validate standard character entities * * Add a semicolon if missing. We do this to enable * the conversion of entities to ASCII later. - * */ - $str = preg_replace('#(&\#?[0-9a-z]{2,})([\x00-\x20])*;?#i', "\\1;\\2", $str); + $str = preg_replace('#(&\#?[0-9a-z]{2,})([\x00-\x20])*;?#i', '\\1;\\2', $str); /* * Validate UTF16 two byte encoding (x00) * * Just as above, adds a semicolon if missing. - * */ - $str = preg_replace('#(&\#x?)([0-9A-F]+);?#i',"\\1\\2;",$str); + $str = preg_replace('#(&\#x?)([0-9A-F]+);?#i', '\\1\\2;', $str); /* * Un-Protect GET variables in URLs */ - $str = str_replace($this->xss_hash(), '&', $str); - - return $str; + return str_replace($this->xss_hash(), '&', $str); } // ---------------------------------------------------------------------- @@ -852,14 +788,11 @@ class CI_Security { */ protected function _do_never_allowed($str) { - foreach ($this->_never_allowed_str as $key => $val) - { - $str = str_replace($key, $val, $str); - } + $str = str_replace(array_keys($this->_never_allowed_str), $this->_never_allowed_str, $str); - foreach ($this->_never_allowed_regex as $key => $val) + foreach ($this->_never_allowed_regex as $regex) { - $str = preg_replace("#".$key."#i", $val, $str); + $str = preg_replace('#'.$regex.'#i', '[removed]', $str); } return $str; @@ -896,4 +829,4 @@ class CI_Security { } /* End of file Security.php */ -/* Location: ./system/core/Security.php */
\ No newline at end of file +/* Location: ./system/core/Security.php */ |