diff options
Diffstat (limited to 'system/core')
| -rw-r--r-- | system/core/CodeIgniter.php | 23 | ||||
| -rw-r--r-- | system/core/Common.php | 8 | ||||
| -rw-r--r-- | system/core/Exceptions.php | 1 | ||||
| -rw-r--r-- | system/core/Log.php | 53 | ||||
| -rw-r--r-- | system/core/Output.php | 62 | ||||
| -rw-r--r-- | system/core/Security.php | 94 |
6 files changed, 196 insertions, 45 deletions
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php index e6ce13d81..66ed9ec8f 100644 --- a/system/core/CodeIgniter.php +++ b/system/core/CodeIgniter.php @@ -55,7 +55,7 @@ defined('BASEPATH') OR exit('No direct script access allowed'); * @var string * */ - define('CI_VERSION', '3.2.0-dev'); + const CI_VERSION = '3.2.0-dev'; /* * ------------------------------------------------------ @@ -416,10 +416,29 @@ if ( ! is_php('5.4')) $params = array($method, array_slice($URI->rsegments, 2)); $method = '_remap'; } - elseif ( ! is_callable(array($class, $method))) + elseif ( ! method_exists($class, $method)) { $e404 = TRUE; } + /** + * DO NOT CHANGE THIS, NOTHING ELSE WORKS! + * + * - method_exists() returns true for non-public methods, which passes the previous elseif + * - is_callable() returns false for PHP 4-style constructors, even if there's a __construct() + * - method_exists($class, '__construct') won't work because CI_Controller::__construct() is inherited + * - People will only complain if this doesn't work, even though it is documented that it shouldn't. + * + * ReflectionMethod::isConstructor() is the ONLY reliable check, + * knowing which method will be executed as a constructor. + */ + elseif ( ! is_callable(array($class, $method)) && strcasecmp($class, $method) === 0) + { + $reflection = new ReflectionMethod($class, $method); + if ( ! $reflection->isPublic() OR $reflection->isConstructor()) + { + $e404 = TRUE; + } + } } if ($e404) diff --git a/system/core/Common.php b/system/core/Common.php index 2c7651943..91c585f7d 100644 --- a/system/core/Common.php +++ b/system/core/Common.php @@ -544,13 +544,18 @@ if ( ! function_exists('set_status_header')) 416 => 'Requested Range Not Satisfiable', 417 => 'Expectation Failed', 422 => 'Unprocessable Entity', + 426 => 'Upgrade Required', + 428 => 'Precondition Required', + 429 => 'Too Many Requests', + 431 => 'Request Header Fields Too Large', 500 => 'Internal Server Error', 501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Timeout', - 505 => 'HTTP Version Not Supported' + 505 => 'HTTP Version Not Supported', + 511 => 'Network Authentication Required', ); if (isset($stati[$code])) @@ -656,6 +661,7 @@ if ( ! function_exists('_exception_handler')) $_error =& load_class('Exceptions', 'core'); $_error->log_exception('error', 'Exception: '.$exception->getMessage(), $exception->getFile(), $exception->getLine()); + is_cli() OR set_status_header(500); // Should we display the error? if (str_ireplace(array('off', 'none', 'no', 'false', 'null'), '', ini_get('display_errors'))) { diff --git a/system/core/Exceptions.php b/system/core/Exceptions.php index a1c6a1970..4e10f2831 100644 --- a/system/core/Exceptions.php +++ b/system/core/Exceptions.php @@ -207,7 +207,6 @@ class CI_Exceptions { } else { - set_status_header(500); $templates_path .= 'html'.DIRECTORY_SEPARATOR; } diff --git a/system/core/Log.php b/system/core/Log.php index 986121526..cf6c75a95 100644 --- a/system/core/Log.php +++ b/system/core/Log.php @@ -104,6 +104,13 @@ class CI_Log { */ protected $_levels = array('ERROR' => 1, 'DEBUG' => 2, 'INFO' => 3, 'ALL' => 4); + /** + * mbstring.func_override flag + * + * @var bool + */ + protected static $func_override; + // -------------------------------------------------------------------- /** @@ -115,6 +122,8 @@ class CI_Log { { $config =& get_config(); + isset(self::$func_override) OR self::$func_override = (extension_loaded('mbstring') && ini_get('mbstring.func_override')); + $this->_log_path = ($config['log_path'] !== '') ? $config['log_path'] : APPPATH.'logs/'; $this->_file_ext = (isset($config['log_file_extension']) && $config['log_file_extension'] !== '') ? ltrim($config['log_file_extension'], '.') : 'php'; @@ -208,9 +217,9 @@ class CI_Log { $message .= $this->_format_line($level, $date, $msg); - for ($written = 0, $length = strlen($message); $written < $length; $written += $result) + for ($written = 0, $length = self::strlen($message); $written < $length; $written += $result) { - if (($result = fwrite($fp, substr($message, $written))) === FALSE) + if (($result = fwrite($fp, self::substr($message, $written))) === FALSE) { break; } @@ -244,4 +253,44 @@ class CI_Log { { return $level.' - '.$date.' --> '.$message."\n"; } + + // -------------------------------------------------------------------- + + /** + * Byte-safe strlen() + * + * @param string $str + * @return int + */ + protected static function strlen($str) + { + return (self::$func_override) + ? mb_strlen($str, '8bit') + : strlen($str); + } + + // -------------------------------------------------------------------- + + /** + * Byte-safe substr() + * + * @param string $str + * @param int $start + * @param int $length + * @return string + */ + protected static function substr($str, $start, $length = NULL) + { + if (self::$func_override) + { + // mb_substr($str, $start, null, '8bit') returns an empty + // string on PHP 5.3 + isset($length) OR $length = ($start >= 0 ? self::strlen($str) - $start : -$start); + return mb_substr($str, $start, $length, '8bit'); + } + + return isset($length) + ? substr($str, $start, $length) + : substr($str, $start); + } } diff --git a/system/core/Output.php b/system/core/Output.php index 98db212a0..7921a54ef 100644 --- a/system/core/Output.php +++ b/system/core/Output.php @@ -123,6 +123,13 @@ class CI_Output { public $parse_exec_vars = TRUE; /** + * mbstring.func_override flag + * + * @var bool + */ + protected static $func_override; + + /** * Class constructor * * Determines whether zLib output compression will be used. @@ -138,6 +145,8 @@ class CI_Output { && extension_loaded('zlib') ); + isset(self::$func_override) OR self::$func_override = (extension_loaded('mbstring') && ini_get('mbstring.func_override')); + // Get mime types for later $this->mimes =& get_mimes(); @@ -304,9 +313,9 @@ class CI_Output { for ($i = 0, $c = count($headers); $i < $c; $i++) { - if (strncasecmp($header, $headers[$i], $l = strlen($header)) === 0) + if (strncasecmp($header, $headers[$i], $l = self::strlen($header)) === 0) { - return trim(substr($headers[$i], $l+1)); + return trim(self::substr($headers[$i], $l+1)); } } @@ -480,13 +489,13 @@ class CI_Output { if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== FALSE) { header('Content-Encoding: gzip'); - header('Content-Length: '.strlen($output)); + header('Content-Length: '.self::strlen($output)); } else { // User agent doesn't support gzip compression, // so we'll have to decompress our cache - $output = gzinflate(substr($output, 10, -8)); + $output = gzinflate(self::substr($output, 10, -8)); } } @@ -601,9 +610,9 @@ class CI_Output { $output = $cache_info.'ENDCI--->'.$output; - for ($written = 0, $length = strlen($output); $written < $length; $written += $result) + for ($written = 0, $length = self::strlen($output); $written < $length; $written += $result) { - if (($result = fwrite($fp, substr($output, $written))) === FALSE) + if (($result = fwrite($fp, self::substr($output, $written))) === FALSE) { break; } @@ -711,7 +720,7 @@ class CI_Output { } // Display the cache - $this->_display(substr($cache, strlen($match[0]))); + $this->_display(self::substr($cache, self::strlen($match[0]))); log_message('debug', 'Cache file is current. Sending it to browser.'); return TRUE; } @@ -797,4 +806,43 @@ class CI_Output { } } + // -------------------------------------------------------------------- + + /** + * Byte-safe strlen() + * + * @param string $str + * @return int + */ + protected static function strlen($str) + { + return (self::$func_override) + ? mb_strlen($str, '8bit') + : strlen($str); + } + + // -------------------------------------------------------------------- + + /** + * Byte-safe substr() + * + * @param string $str + * @param int $start + * @param int $length + * @return string + */ + protected static function substr($str, $start, $length = NULL) + { + if (self::$func_override) + { + // mb_substr($str, $start, null, '8bit') returns an empty + // string on PHP 5.3 + isset($length) OR $length = ($start >= 0 ? self::strlen($str) - $start : -$start); + return mb_substr($str, $start, $length, '8bit'); + } + + return isset($length) + ? substr($str, $start, $length) + : substr($str, $start); + } } diff --git a/system/core/Security.php b/system/core/Security.php index 3a5da4fde..d0308c5f9 100644 --- a/system/core/Security.php +++ b/system/core/Security.php @@ -133,15 +133,16 @@ class CI_Security { * @var array */ protected $_never_allowed_str = array( - 'document.cookie' => '[removed]', - 'document.write' => '[removed]', - '.parentNode' => '[removed]', - '.innerHTML' => '[removed]', - '-moz-binding' => '[removed]', - '<!--' => '<!--', - '-->' => '-->', - '<![CDATA[' => '<![CDATA[', - '<comment>' => '<comment>' + 'document.cookie' => '[removed]', + 'document.write' => '[removed]', + '.parentNode' => '[removed]', + '.innerHTML' => '[removed]', + '-moz-binding' => '[removed]', + '<!--' => '<!--', + '-->' => '-->', + '<![CDATA[' => '<![CDATA[', + '<comment>' => '<comment>', + '<%' => '<%' ); /** @@ -371,11 +372,17 @@ class CI_Security { * * Note: Use rawurldecode() so it does not remove plus signs */ - do + if (stripos($str, '%') !== false) { - $str = rawurldecode($str); + do + { + $oldstr = $str; + $str = rawurldecode($str); + $str = preg_replace_callback('#%(?:\s*[0-9a-f]){2,}#i', array($this, '_urldecodespaces'), $str); + } + while ($oldstr !== $str); + unset($oldstr); } - while (preg_match('/%[0-9a-f]{2,}/i', $str)); /* * Convert character entities to ASCII @@ -466,7 +473,7 @@ class CI_Security { if (preg_match('/<a/i', $str)) { - $str = preg_replace_callback('#<a[^a-z0-9>]+([^>]*?)(?:>|$)#si', array($this, '_js_link_removal'), $str); + $str = preg_replace_callback('#<a(?:rea)?[^a-z0-9>]+([^>]*?)(?:>|$)#si', array($this, '_js_link_removal'), $str); } if (preg_match('/<img/i', $str)) @@ -669,6 +676,22 @@ class CI_Security { ? ENT_COMPAT | ENT_HTML5 : ENT_COMPAT; + if ( ! isset($_entities)) + { + $_entities = array_map('strtolower', get_html_translation_table(HTML_ENTITIES, $flag, $charset)); + + // If we're not on PHP 5.4+, add the possibly dangerous HTML 5 + // entities to the array manually + if ($flag === ENT_COMPAT) + { + $_entities[':'] = ':'; + $_entities['('] = '('; + $_entities[')'] = ')'; + $_entities["\n"] = '
'; + $_entities["\t"] = '	'; + } + } + do { $str_compare = $str; @@ -676,22 +699,6 @@ class CI_Security { // Decode standard entities, avoiding false positives if (preg_match_all('/&[a-z]{2,}(?![a-z;])/i', $str, $matches)) { - if ( ! isset($_entities)) - { - $_entities = array_map('strtolower', get_html_translation_table(HTML_ENTITIES, $flag, $charset)); - - // If we're not on PHP 5.4+, add the possibly dangerous HTML 5 - // entities to the array manually - if ($flag === ENT_COMPAT) - { - $_entities[':'] = ':'; - $_entities['('] = '('; - $_entities[')'] = ')'; - $_entities["\n"] = '&newline;'; - $_entities["\t"] = '&tab;'; - } - } - $replace = array(); $matches = array_unique(array_map('strtolower', $matches[0])); foreach ($matches as &$match) @@ -702,7 +709,7 @@ class CI_Security { } } - $str = str_ireplace(array_keys($replace), array_values($replace), $str); + $str = str_replace(array_keys($replace), array_values($replace), $str); } // Decode numeric & UTF16 two byte entities @@ -711,6 +718,11 @@ class CI_Security { $flag, $charset ); + + if ($flag === ENT_COMPAT) + { + $str = str_replace(array_values($_entities), array_keys($_entities), $str); + } } while ($str_compare !== $str); return $str; @@ -770,6 +782,24 @@ class CI_Security { // ---------------------------------------------------------------- /** + * URL-decode taking spaces into account + * + * @see https://github.com/bcit-ci/CodeIgniter/issues/4877 + * @param array $matches + * @return string + */ + protected function _urldecodespaces($matches) + { + $input = $matches[0]; + $nospaces = preg_replace('#\s+#', '', $input); + return ($nospaces === $input) + ? $input + : rawurldecode($nospaces); + } + + // ---------------------------------------------------------------- + + /** * Compact Exploded Words * * Callback method for xss_clean() to remove whitespace from @@ -798,7 +828,7 @@ class CI_Security { protected function _sanitize_naughty_html($matches) { static $naughty_tags = array( - 'alert', 'prompt', 'confirm', 'applet', 'audio', 'basefont', 'base', 'behavior', 'bgsound', + 'alert', 'area', 'prompt', 'confirm', 'applet', 'audio', 'basefont', 'base', 'behavior', 'bgsound', 'blink', 'body', 'embed', 'expression', 'form', 'frameset', 'frame', 'head', 'html', 'ilayer', 'iframe', 'input', 'button', 'select', 'isindex', 'layer', 'link', 'meta', 'keygen', 'object', 'plaintext', 'style', 'script', 'textarea', 'title', 'math', 'video', 'svg', 'xml', 'xss' @@ -895,7 +925,7 @@ class CI_Security { return str_replace( $match[1], preg_replace( - '#href=.*?(?:(?:alert|prompt|confirm)(?:\(|&\#40;)|javascript:|livescript:|mocha:|charset=|window\.|document\.|\.cookie|<script|<xss|data\s*:)#si', + '#href=.*?(?:(?:alert|prompt|confirm)(?:\(|&\#40;)|javascript:|livescript:|mocha:|charset=|window\.|document\.|\.cookie|<script|<xss|d\s*a\s*t\s*a\s*:)#si', '', $this->_filter_attributes($match[1]) ), |