diff options
Diffstat (limited to 'lib/private/request.php')
-rw-r--r-- | lib/private/request.php | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/lib/private/request.php b/lib/private/request.php deleted file mode 100644 index ab011c913d9..00000000000 --- a/lib/private/request.php +++ /dev/null @@ -1,330 +0,0 @@ -<?php -/** - * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl> - * This file is licensed under the Affero General Public License version 3 or - * later. - * See the COPYING-README file. - */ - -class OC_Request { - - const USER_AGENT_IE = '/MSIE/'; - // Android Chrome user agent: https://developers.google.com/chrome/mobile/docs/user-agent - const USER_AGENT_ANDROID_MOBILE_CHROME = '#Android.*Chrome/[.0-9]*#'; - const USER_AGENT_FREEBOX = '#^Mozilla/5\.0$#'; - const REGEX_LOCALHOST = '/^(127\.0\.0\.1|localhost)$/'; - - /** - * Returns the remote address, if the connection came from a trusted proxy and `forwarded_for_headers` has been configured - * then the IP address specified in this header will be returned instead. - * Do always use this instead of $_SERVER['REMOTE_ADDR'] - * @return string IP address - */ - public static function getRemoteAddress() { - $remoteAddress = isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : ''; - $trustedProxies = \OC::$server->getConfig()->getSystemValue('trusted_proxies', array()); - - if(is_array($trustedProxies) && in_array($remoteAddress, $trustedProxies)) { - $forwardedForHeaders = \OC::$server->getConfig()->getSystemValue('forwarded_for_headers', array()); - - foreach($forwardedForHeaders as $header) { - if (array_key_exists($header, $_SERVER) === true) { - foreach (explode(',', $_SERVER[$header]) as $IP) { - $IP = trim($IP); - if (filter_var($IP, FILTER_VALIDATE_IP) !== false) { - return $IP; - } - } - } - } - } - - return $remoteAddress; - } - - /** - * Check overwrite condition - * @param string $type - * @return bool - */ - private static function isOverwriteCondition($type = '') { - $regex = '/' . OC_Config::getValue('overwritecondaddr', '') . '/'; - return $regex === '//' or preg_match($regex, $_SERVER['REMOTE_ADDR']) === 1 - or ($type !== 'protocol' and OC_Config::getValue('forcessl', false)); - } - - /** - * Strips a potential port from a domain (in format domain:port) - * @param $host - * @return string $host without appended port - */ - public static function getDomainWithoutPort($host) { - $pos = strrpos($host, ':'); - if ($pos !== false) { - $port = substr($host, $pos + 1); - if (is_numeric($port)) { - $host = substr($host, 0, $pos); - } - } - return $host; - } - - /** - * Checks whether a domain is considered as trusted from the list - * of trusted domains. If no trusted domains have been configured, returns - * true. - * This is used to prevent Host Header Poisoning. - * @param string $domainWithPort - * @return bool true if the given domain is trusted or if no trusted domains - * have been configured - */ - public static function isTrustedDomain($domainWithPort) { - // Extract port from domain if needed - $domain = self::getDomainWithoutPort($domainWithPort); - - // FIXME: Empty config array defaults to true for now. - Deprecate this behaviour with ownCloud 8. - $trustedList = \OC::$server->getConfig()->getSystemValue('trusted_domains', array()); - if (empty($trustedList)) { - return true; - } - - // FIXME: Workaround for older instances still with port applied. Remove for ownCloud 9. - if(in_array($domainWithPort, $trustedList)) { - return true; - } - - // Always allow access from localhost - if (preg_match(self::REGEX_LOCALHOST, $domain) === 1) { - return true; - } - - return in_array($domain, $trustedList); - } - - /** - * Returns the unverified server host from the headers without checking - * whether it is a trusted domain - * @return string the server host - * - * Returns the server host, even if the website uses one or more - * reverse proxies - */ - public static function insecureServerHost() { - $host = null; - if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) { - if (strpos($_SERVER['HTTP_X_FORWARDED_HOST'], ",") !== false) { - $parts = explode(',', $_SERVER['HTTP_X_FORWARDED_HOST']); - $host = trim(current($parts)); - } else { - $host = $_SERVER['HTTP_X_FORWARDED_HOST']; - } - } else { - if (isset($_SERVER['HTTP_HOST'])) { - $host = $_SERVER['HTTP_HOST']; - } else if (isset($_SERVER['SERVER_NAME'])) { - $host = $_SERVER['SERVER_NAME']; - } - } - return $host; - } - - /** - * Returns the overwritehost setting from the config if set and - * if the overwrite condition is met - * @return string|null overwritehost value or null if not defined or the defined condition - * isn't met - */ - public static function getOverwriteHost() { - if(OC_Config::getValue('overwritehost', '') !== '' and self::isOverwriteCondition()) { - return OC_Config::getValue('overwritehost'); - } - return null; - } - - /** - * Returns the server host from the headers, or the first configured - * trusted domain if the host isn't in the trusted list - * @return string the server host - * - * Returns the server host, even if the website uses one or more - * reverse proxies - */ - public static function serverHost() { - if (OC::$CLI && defined('PHPUNIT_RUN')) { - return 'localhost'; - } - - // overwritehost is always trusted - $host = self::getOverwriteHost(); - if ($host !== null) { - return $host; - } - - // get the host from the headers - $host = self::insecureServerHost(); - - // Verify that the host is a trusted domain if the trusted domains - // are defined - // If no trusted domain is provided the first trusted domain is returned - if (self::isTrustedDomain($host)) { - return $host; - } else { - $trustedList = \OC_Config::getValue('trusted_domains', array('')); - return $trustedList[0]; - } - } - - /** - * Returns the server protocol - * @return string the server protocol - * - * Returns the server protocol. It respects reverse proxy servers and load balancers - */ - public static function serverProtocol() { - if(OC_Config::getValue('overwriteprotocol', '') !== '' and self::isOverwriteCondition('protocol')) { - return OC_Config::getValue('overwriteprotocol'); - } - if (isset($_SERVER['HTTP_X_FORWARDED_PROTO'])) { - $proto = strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']); - // Verify that the protocol is always HTTP or HTTPS - // default to http if an invalid value is provided - return $proto === 'https' ? 'https' : 'http'; - } - if (isset($_SERVER['HTTPS']) && !empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') { - return 'https'; - } - return 'http'; - } - - /** - * Returns the request uri - * @return string the request uri - * - * Returns the request uri, even if the website uses one or more - * reverse proxies - * @return string - */ - public static function requestUri() { - $uri = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : ''; - if (OC_Config::getValue('overwritewebroot', '') !== '' and self::isOverwriteCondition()) { - $uri = self::scriptName() . substr($uri, strlen($_SERVER['SCRIPT_NAME'])); - } - return $uri; - } - - /** - * Returns the script name - * @return string the script name - * - * Returns the script name, even if the website uses one or more - * reverse proxies - */ - public static function scriptName() { - $name = $_SERVER['SCRIPT_NAME']; - $overwriteWebRoot = OC_Config::getValue('overwritewebroot', ''); - if ($overwriteWebRoot !== '' and self::isOverwriteCondition()) { - $serverroot = str_replace("\\", '/', substr(__DIR__, 0, -strlen('lib/private/'))); - $suburi = str_replace("\\", "/", substr(realpath($_SERVER["SCRIPT_FILENAME"]), strlen($serverroot))); - $name = '/' . ltrim($overwriteWebRoot . $suburi, '/'); - } - return $name; - } - - /** - * get Path info from request - * @return string Path info or false when not found - */ - public static function getPathInfo() { - if (array_key_exists('PATH_INFO', $_SERVER)) { - $path_info = $_SERVER['PATH_INFO']; - }else{ - $path_info = self::getRawPathInfo(); - // following is taken from \Sabre\DAV\URLUtil::decodePathSegment - $path_info = rawurldecode($path_info); - $encoding = mb_detect_encoding($path_info, array('UTF-8', 'ISO-8859-1')); - - switch($encoding) { - - case 'ISO-8859-1' : - $path_info = utf8_encode($path_info); - - } - // end copy - } - return $path_info; - } - - /** - * get Path info from request, not urldecoded - * @throws Exception - * @return string Path info or false when not found - */ - public static function getRawPathInfo() { - $requestUri = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : ''; - // remove too many leading slashes - can be caused by reverse proxy configuration - if (strpos($requestUri, '/') === 0) { - $requestUri = '/' . ltrim($requestUri, '/'); - } - - $requestUri = preg_replace('%/{2,}%', '/', $requestUri); - - // Remove the query string from REQUEST_URI - if ($pos = strpos($requestUri, '?')) { - $requestUri = substr($requestUri, 0, $pos); - } - - $scriptName = $_SERVER['SCRIPT_NAME']; - $path_info = $requestUri; - - // strip off the script name's dir and file name - list($path, $name) = \Sabre\DAV\URLUtil::splitPath($scriptName); - if (!empty($path)) { - if( $path === $path_info || strpos($path_info, $path.'/') === 0) { - $path_info = substr($path_info, strlen($path)); - } else { - throw new Exception("The requested uri($requestUri) cannot be processed by the script '$scriptName')"); - } - } - if (strpos($path_info, '/'.$name) === 0) { - $path_info = substr($path_info, strlen($name) + 1); - } - if (strpos($path_info, $name) === 0) { - $path_info = substr($path_info, strlen($name)); - } - if($path_info === '/'){ - return ''; - } else { - return $path_info; - } - } - - /** - * Check if the requester sent along an mtime - * @return false or an mtime - */ - static public function hasModificationTime () { - if (isset($_SERVER['HTTP_X_OC_MTIME'])) { - return $_SERVER['HTTP_X_OC_MTIME']; - } else { - return false; - } - } - - /** - * Checks whether the user agent matches a given regex - * @param string|array $agent agent name or array of agent names - * @return boolean true if at least one of the given agent matches, - * false otherwise - */ - static public function isUserAgent($agent) { - if (!is_array($agent)) { - $agent = array($agent); - } - foreach ($agent as $regex) { - if (preg_match($regex, $_SERVER['HTTP_USER_AGENT'])) { - return true; - } - } - return false; - } -} |