diff options
Diffstat (limited to 'system/core/Security.php')
| -rwxr-xr-x | system/core/Security.php | 69 |
1 files changed, 19 insertions, 50 deletions
diff --git a/system/core/Security.php b/system/core/Security.php index 84ecb06db..65338ced3 100755 --- a/system/core/Security.php +++ b/system/core/Security.php @@ -33,7 +33,7 @@ class CI_Security { * @access protected */ protected $_xss_hash = ''; - + /** * Random Hash for Cross Site Request Forgery Protection Cookie * @@ -41,7 +41,7 @@ class CI_Security { * @access protected */ protected $_csrf_hash = ''; - + /** * Expiration time for Cross Site Request Forgery Protection Cookie * Defaults to two hours (in seconds) @@ -50,7 +50,7 @@ class CI_Security { * @access protected */ protected $_csrf_expire = 7200; - + /** * Token name for Cross Site Request Forgery Protection Cookie * @@ -58,7 +58,7 @@ class CI_Security { * @access protected */ protected $_csrf_token_name = 'ci_csrf_token'; - + /** * Cookie name for Cross Site Request Forgery Protection Cookie * @@ -66,14 +66,14 @@ class CI_Security { * @access protected */ 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]', @@ -139,7 +139,7 @@ class CI_Security { { return $this->csrf_set_cookie(); } - + // Check if URI has been whitelisted from CSRF checks if ($exclude_uris = config_item('csrf_exclude_uris')) { @@ -172,9 +172,9 @@ class CI_Security { $this->_csrf_hash = ''; $this->_csrf_set_hash(); $this->csrf_set_cookie(); - + log_message('debug', "CSRF token verified"); - + return $this; } @@ -188,7 +188,7 @@ class CI_Security { public function csrf_set_cookie() { $expire = time() + $this->_csrf_expire; - $secure_cookie = (config_item('cookie_secure') === TRUE) ? 1 : 0; + $secure_cookie = (bool) config_item('cookie_secure'); if ($secure_cookie) { @@ -385,16 +385,11 @@ class CI_Security { foreach ($words as $word) { - $temp = ''; - - for ($i = 0, $wordlen = strlen($word); $i < $wordlen; $i++) - { - $temp .= substr($word, $i, 1)."\s*"; - } + $word = implode("\s*", str_split($word)) . "\s*"; // We only want to do this when it is followed by a non-word character // That way valid stuff like "dealer to" does not become "dealerto" - $str = preg_replace_callback('#('.substr($temp, 0, -3).')(\W)#is', array($this, '_compact_exploded_words'), $str); + $str = preg_replace_callback('#('.substr($word, 0, -3).')(\W)#is', array($this, '_compact_exploded_words'), $str); } /* @@ -473,7 +468,7 @@ class CI_Security { if ($is_image === TRUE) { - return ($str == $converted_string) ? TRUE: FALSE; + return ($str === $converted_string) ? TRUE : FALSE; } log_message('debug', "XSS Filtering completed"); @@ -513,26 +508,17 @@ class CI_Security { * * This function is a replacement for html_entity_decode() * - * In some versions of PHP the native function does not work - * when UTF-8 is the specified character set, so this gives us - * a work-around. More info here: - * http://bugs.php.net/bug.php?id=25670 - * - * NOTE: html_entity_decode() has a bug in some PHP versions when UTF-8 is the - * character set, and the PHP developers said they were not back porting the - * fix to versions other than PHP 5.x. - * * @param string * @param string * @return string */ public function entity_decode($str, $charset = NULL) { - if (stristr($str, '&') === FALSE) + if (strpos($str, '&') === FALSE) { return $str; } - + if (empty($charset)) { $charset = config_item('charset'); @@ -543,26 +529,9 @@ class CI_Security { // at the end of an entity most browsers will still interpret the entity // correctly. html_entity_decode() does not convert entities without // semicolons, so we are left with our own little solution here. Bummer. - - if (function_exists('html_entity_decode') && - (strtolower($charset) != 'utf-8')) - { - $str = html_entity_decode($str, ENT_COMPAT, $charset); - $str = preg_replace('~&#x(0*[0-9a-f]{2,5})~ei', 'chr(hexdec("\\1"))', $str); - return preg_replace('~&#([0-9]{2,4})~e', 'chr(\\1)', $str); - } - - // Numeric Entities - $str = preg_replace('~&#x(0*[0-9a-f]{2,5});{0,1}~ei', 'chr(hexdec("\\1"))', $str); - $str = preg_replace('~&#([0-9]{2,4});{0,1}~e', 'chr(\\1)', $str); - - // Literal Entities - Slightly slow so we do another check - if (stristr($str, '&') === FALSE) - { - $str = strtr($str, array_flip(get_html_translation_table(HTML_ENTITIES))); - } - - return $str; + $str = html_entity_decode($str, ENT_COMPAT, $charset); + $str = preg_replace('~&#x(0*[0-9a-f]{2,5})~ei', 'chr(hexdec("\\1"))', $str); + return preg_replace('~&#([0-9]{2,4})~e', 'chr(\\1)', $str); } // -------------------------------------------------------------------- @@ -896,4 +865,4 @@ class CI_Security { } /* End of file Security.php */ -/* Location: ./system/libraries/Security.php */
\ No newline at end of file +/* Location: ./system/core/Security.php */ |