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Edit File : Request.php \| Size : 64.43 KB
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Component\HttpFoundation; use Symfony\Component\HttpFoundation\Exception\ConflictingHeadersException; use Symfony\Component\HttpFoundation\Exception\SuspiciousOperationException; use Symfony\Component\HttpFoundation\Session\SessionInterface; // Help opcache.preload discover always-needed symbols class_exists(AcceptHeader::class); class_exists(FileBag::class); class_exists(HeaderBag::class); class_exists(HeaderUtils::class); class_exists(ParameterBag::class); class_exists(ServerBag::class); /* * Request represents an HTTP request. * * The methods dealing with URL accept / return a raw path (% encoded): * * getBasePath * * getBaseUrl * * getPathInfo * * getRequestUri * * getUri * * getUriForPath * * @author Fabien Potencier <fabien@symfony.com> / class Request { const HEADER_FORWARDED = 0b00001; // When using RFC 7239 const HEADER_X_FORWARDED_FOR = 0b00010; const HEADER_X_FORWARDED_HOST = 0b00100; const HEADER_X_FORWARDED_PROTO = 0b01000; const HEADER_X_FORWARDED_PORT = 0b10000; const HEADER_X_FORWARDED_ALL = 0b11110; // All "X-Forwarded-" headers const HEADER_X_FORWARDED_AWS_ELB = 0b11010; // AWS ELB doesn't send X-Forwarded-Host const METHOD_HEAD = 'HEAD'; const METHOD_GET = 'GET'; const METHOD_POST = 'POST'; const METHOD_PUT = 'PUT'; const METHOD_PATCH = 'PATCH'; const METHOD_DELETE = 'DELETE'; const METHOD_PURGE = 'PURGE'; const METHOD_OPTIONS = 'OPTIONS'; const METHOD_TRACE = 'TRACE'; const METHOD_CONNECT = 'CONNECT'; /** * @var string[] / protected static $trustedProxies = []; /* * @var string[] / protected static $trustedHostPatterns = []; /* * @var string[] / protected static $trustedHosts = []; protected static $httpMethodParameterOverride = false; /* * Custom parameters. * * @var ParameterBag / public $attributes; /* * Request body parameters ($_POST). * * @var ParameterBag / public $request; /* * Query string parameters ($_GET). * * @var ParameterBag / public $query; /* * Server and execution environment parameters ($_SERVER). * * @var ServerBag / public $server; /* * Uploaded files ($_FILES). * * @var FileBag / public $files; /* * Cookies ($_COOKIE). * * @var ParameterBag / public $cookies; /* * Headers (taken from the $_SERVER). * * @var HeaderBag / public $headers; /* * @var string\|resource\|false\|null / protected $content; /* * @var array / protected $languages; /* * @var array / protected $charsets; /* * @var array / protected $encodings; /* * @var array / protected $acceptableContentTypes; /* * @var string / protected $pathInfo; /* * @var string / protected $requestUri; /* * @var string / protected $baseUrl; /* * @var string / protected $basePath; /* * @var string / protected $method; /* * @var string / protected $format; /* * @var SessionInterface / protected $session; /* * @var string / protected $locale; /* * @var string / protected $defaultLocale = 'en'; /* * @var array / protected static $formats; protected static $requestFactory; /* * @var string\|null / private $preferredFormat; private $isHostValid = true; private $isForwardedValid = true; private static $trustedHeaderSet = -1; private static $forwardedParams = [ self::HEADER_X_FORWARDED_FOR => 'for', self::HEADER_X_FORWARDED_HOST => 'host', self::HEADER_X_FORWARDED_PROTO => 'proto', self::HEADER_X_FORWARDED_PORT => 'host', ]; /* * Names for headers that can be trusted when * using trusted proxies. * * The FORWARDED header is the standard as of rfc7239. * * The other headers are non-standard, but widely used * by popular reverse proxies (like Apache mod_proxy or Amazon EC2). / private static $trustedHeaders = [ self::HEADER_FORWARDED => 'FORWARDED', self::HEADER_X_FORWARDED_FOR => 'X_FORWARDED_FOR', self::HEADER_X_FORWARDED_HOST => 'X_FORWARDED_HOST', self::HEADER_X_FORWARDED_PROTO => 'X_FORWARDED_PROTO', self::HEADER_X_FORWARDED_PORT => 'X_FORWARDED_PORT', ]; /* * @param array $query The GET parameters * @param array $request The POST parameters * @param array $attributes The request attributes (parameters parsed from the PATH_INFO, ...) * @param array $cookies The COOKIE parameters * @param array $files The FILES parameters * @param array $server The SERVER parameters * @param string\|resource\|null $content The raw body data / public function __construct(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null) { $this->initialize($query, $request, $attributes, $cookies, $files, $server, $content); } /* * Sets the parameters for this request. * * This method also re-initializes all properties. * * @param array $query The GET parameters * @param array $request The POST parameters * @param array $attributes The request attributes (parameters parsed from the PATH_INFO, ...) * @param array $cookies The COOKIE parameters * @param array $files The FILES parameters * @param array $server The SERVER parameters * @param string\|resource\|null $content The raw body data / public function initialize(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null) { $this->request = new ParameterBag($request); $this->query = new ParameterBag($query); $this->attributes = new ParameterBag($attributes); $this->cookies = new ParameterBag($cookies); $this->files = new FileBag($files); $this->server = new ServerBag($server); $this->headers = new HeaderBag($this->server->getHeaders()); $this->content = $content; $this->languages = null; $this->charsets = null; $this->encodings = null; $this->acceptableContentTypes = null; $this->pathInfo = null; $this->requestUri = null; $this->baseUrl = null; $this->basePath = null; $this->method = null; $this->format = null; } /* * Creates a new request with values from PHP's super globals. * * @return static / public static function createFromGlobals() { $request = self::createRequestFromFactory($_GET, $_POST, [], $_COOKIE, $_FILES, $_SERVER); if (0 === strpos($request->headers->get('CONTENT_TYPE'), 'application/x-www-form-urlencoded') && \in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), ['PUT', 'DELETE', 'PATCH']) ) { parse_str($request->getContent(), $data); $request->request = new ParameterBag($data); } return $request; } /* * Creates a Request based on a given URI and configuration. * * The information contained in the URI always take precedence * over the other information (server and parameters). * * @param string $uri The URI * @param string $method The HTTP method * @param array $parameters The query (GET) or request (POST) parameters * @param array $cookies The request cookies ($_COOKIE) * @param array $files The request files ($_FILES) * @param array $server The server parameters ($_SERVER) * @param string\|resource\|null $content The raw body data * * @return static / public static function create($uri, $method = 'GET', $parameters = [], $cookies = [], $files = [], $server = [], $content = null) { $server = array_replace([ 'SERVER_NAME' => 'localhost', 'SERVER_PORT' => 80, 'HTTP_HOST' => 'localhost', 'HTTP_USER_AGENT' => 'Symfony', 'HTTP_ACCEPT' => 'text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8', 'HTTP_ACCEPT_LANGUAGE' => 'en-us,en;q=0.5', 'HTTP_ACCEPT_CHARSET' => 'ISO-8859-1,utf-8;q=0.7,;q=0.7', 'REMOTE_ADDR' => '127.0.0.1', 'SCRIPT_NAME' => '', 'SCRIPT_FILENAME' => '', 'SERVER_PROTOCOL' => 'HTTP/1.1', 'REQUEST_TIME' => time(), ], $server); $server['PATH_INFO'] = ''; $server['REQUEST_METHOD'] = strtoupper($method); $components = parse_url($uri); if (isset($components['host'])) { $server['SERVER_NAME'] = $components['host']; $server['HTTP_HOST'] = $components['host']; } if (isset($components['scheme'])) { if ('https' === $components['scheme']) { $server['HTTPS'] = 'on'; $server['SERVER_PORT'] = 443; } else { unset($server['HTTPS']); $server['SERVER_PORT'] = 80; } } if (isset($components['port'])) { $server['SERVER_PORT'] = $components['port']; $server['HTTP_HOST'] .= ':'.$components['port']; } if (isset($components['user'])) { $server['PHP_AUTH_USER'] = $components['user']; } if (isset($components['pass'])) { $server['PHP_AUTH_PW'] = $components['pass']; } if (!isset($components['path'])) { $components['path'] = '/'; } switch (strtoupper($method)) { case 'POST': case 'PUT': case 'DELETE': if (!isset($server['CONTENT_TYPE'])) { $server['CONTENT_TYPE'] = 'application/x-www-form-urlencoded'; } // no break case 'PATCH': $request = $parameters; $query = []; break; default: $request = []; $query = $parameters; break; } $queryString = ''; if (isset($components['query'])) { parse_str(html_entity_decode($components['query']), $qs); if ($query) { $query = array_replace($qs, $query); $queryString = http_build_query($query, '', '&'); } else { $query = $qs; $queryString = $components['query']; } } elseif ($query) { $queryString = http_build_query($query, '', '&'); } $server['REQUEST_URI'] = $components['path'].('' !== $queryString ? '?'.$queryString : ''); $server['QUERY_STRING'] = $queryString; return self::createRequestFromFactory($query, $request, [], $cookies, $files, $server, $content); } /** * Sets a callable able to create a Request instance. * * This is mainly useful when you need to override the Request class * to keep BC with an existing system. It should not be used for any * other purpose. * * @param callable\|null $callable A PHP callable / public static function setFactory($callable) { self::$requestFactory = $callable; } /* * Clones a request and overrides some of its parameters. * * @param array $query The GET parameters * @param array $request The POST parameters * @param array $attributes The request attributes (parameters parsed from the PATH_INFO, ...) * @param array $cookies The COOKIE parameters * @param array $files The FILES parameters * @param array $server The SERVER parameters * * @return static / public function duplicate(array $query = null, array $request = null, array $attributes = null, array $cookies = null, array $files = null, array $server = null) { $dup = clone $this; if (null !== $query) { $dup->query = new ParameterBag($query); } if (null !== $request) { $dup->request = new ParameterBag($request); } if (null !== $attributes) { $dup->attributes = new ParameterBag($attributes); } if (null !== $cookies) { $dup->cookies = new ParameterBag($cookies); } if (null !== $files) { $dup->files = new FileBag($files); } if (null !== $server) { $dup->server = new ServerBag($server); $dup->headers = new HeaderBag($dup->server->getHeaders()); } $dup->languages = null; $dup->charsets = null; $dup->encodings = null; $dup->acceptableContentTypes = null; $dup->pathInfo = null; $dup->requestUri = null; $dup->baseUrl = null; $dup->basePath = null; $dup->method = null; $dup->format = null; if (!$dup->get('_format') && $this->get('_format')) { $dup->attributes->set('_format', $this->get('_format')); } if (!$dup->getRequestFormat(null)) { $dup->setRequestFormat($this->getRequestFormat(null)); } return $dup; } /* * Clones the current request. * * Note that the session is not cloned as duplicated requests * are most of the time sub-requests of the main one. / public function __clone() { $this->query = clone $this->query; $this->request = clone $this->request; $this->attributes = clone $this->attributes; $this->cookies = clone $this->cookies; $this->files = clone $this->files; $this->server = clone $this->server; $this->headers = clone $this->headers; } /* * Returns the request as a string. * * @return string The request / public function __toString() { try { $content = $this->getContent(); } catch (\LogicException $e) { if (\PHP_VERSION_ID >= 70400) { throw $e; } return trigger_error($e, \E_USER_ERROR); } $cookieHeader = ''; $cookies = []; foreach ($this->cookies as $k => $v) { $cookies[] = $k.'='.$v; } if (!empty($cookies)) { $cookieHeader = 'Cookie: '.implode('; ', $cookies)."\r\n"; } return sprintf('%s %s %s', $this->getMethod(), $this->getRequestUri(), $this->server->get('SERVER_PROTOCOL'))."\r\n". $this->headers. $cookieHeader."\r\n". $content; } /* * Overrides the PHP global variables according to this request instance. * * It overrides $_GET, $_POST, $_REQUEST, $_SERVER, $_COOKIE. * $_FILES is never overridden, see rfc1867 / public function overrideGlobals() { $this->server->set('QUERY_STRING', static::normalizeQueryString(http_build_query($this->query->all(), '', '&'))); $_GET = $this->query->all(); $_POST = $this->request->all(); $_SERVER = $this->server->all(); $_COOKIE = $this->cookies->all(); foreach ($this->headers->all() as $key => $value) { $key = strtoupper(str_replace('-', '_', $key)); if (\in_array($key, ['CONTENT_TYPE', 'CONTENT_LENGTH', 'CONTENT_MD5'], true)) { $_SERVER[$key] = implode(', ', $value); } else { $_SERVER['HTTP_'.$key] = implode(', ', $value); } } $request = ['g' => $_GET, 'p' => $_POST, 'c' => $_COOKIE]; $requestOrder = ini_get('request_order') ?: ini_get('variables_order'); $requestOrder = preg_replace('#[^cgp]#', '', strtolower($requestOrder)) ?: 'gp'; $_REQUEST = [[]]; foreach (str_split($requestOrder) as $order) { $_REQUEST[] = $request[$order]; } $_REQUEST = array_merge(...$_REQUEST); } /* * Sets a list of trusted proxies. * * You should only list the reverse proxies that you manage directly. * * @param array $proxies A list of trusted proxies, the string 'REMOTE_ADDR' will be replaced with $_SERVER['REMOTE_ADDR'] * @param int $trustedHeaderSet A bit field of Request::HEADER_, to set which headers to trust from your proxies * @throws \InvalidArgumentException When $trustedHeaderSet is invalid / public static function setTrustedProxies(array $proxies, int $trustedHeaderSet) { self::$trustedProxies = array_reduce($proxies, function ($proxies, $proxy) { if ('REMOTE_ADDR' !== $proxy) { $proxies[] = $proxy; } elseif (isset($_SERVER['REMOTE_ADDR'])) { $proxies[] = $_SERVER['REMOTE_ADDR']; } return $proxies; }, []); self::$trustedHeaderSet = $trustedHeaderSet; } /* * Gets the list of trusted proxies. * * @return array An array of trusted proxies / public static function getTrustedProxies() { return self::$trustedProxies; } /* * Gets the set of trusted headers from trusted proxies. * * @return int A bit field of Request::HEADER_* that defines which headers are trusted from your proxies / public static function getTrustedHeaderSet() { return self::$trustedHeaderSet; } /* * Sets a list of trusted host patterns. * * You should only list the hosts you manage using regexs. * * @param array $hostPatterns A list of trusted host patterns / public static function setTrustedHosts(array $hostPatterns) { self::$trustedHostPatterns = array_map(function ($hostPattern) { return sprintf('{%s}i', $hostPattern); }, $hostPatterns); // we need to reset trusted hosts on trusted host patterns change self::$trustedHosts = []; } /* * Gets the list of trusted host patterns. * * @return array An array of trusted host patterns / public static function getTrustedHosts() { return self::$trustedHostPatterns; } /* * Normalizes a query string. * * It builds a normalized query string, where keys/value pairs are alphabetized, * have consistent escaping and unneeded delimiters are removed. * * @param string $qs Query string * * @return string A normalized query string for the Request / public static function normalizeQueryString($qs) { if ('' === ($qs ?? '')) { return ''; } parse_str($qs, $qs); ksort($qs); return http_build_query($qs, '', '&', \PHP_QUERY_RFC3986); } /* * Enables support for the _method request parameter to determine the intended HTTP method. * * Be warned that enabling this feature might lead to CSRF issues in your code. * Check that you are using CSRF tokens when required. * If the HTTP method parameter override is enabled, an html-form with method "POST" can be altered * and used to send a "PUT" or "DELETE" request via the _method request parameter. * If these methods are not protected against CSRF, this presents a possible vulnerability. * * The HTTP method can only be overridden when the real HTTP method is POST. / public static function enableHttpMethodParameterOverride() { self::$httpMethodParameterOverride = true; } /* * Checks whether support for the _method request parameter is enabled. * * @return bool True when the _method request parameter is enabled, false otherwise / public static function getHttpMethodParameterOverride() { return self::$httpMethodParameterOverride; } /* * Gets a "parameter" value from any bag. * * This method is mainly useful for libraries that want to provide some flexibility. If you don't need the * flexibility in controllers, it is better to explicitly get request parameters from the appropriate * public property instead (attributes, query, request). * * Order of precedence: PATH (routing placeholders or custom attributes), GET, BODY * * @param string $key The key * @param mixed $default The default value if the parameter key does not exist * * @return mixed / public function get($key, $default = null) { if ($this !== $result = $this->attributes->get($key, $this)) { return $result; } if ($this !== $result = $this->query->get($key, $this)) { return $result; } if ($this !== $result = $this->request->get($key, $this)) { return $result; } return $default; } /* * Gets the Session. * * @return SessionInterface The session / public function getSession() { $session = $this->session; if (!$session instanceof SessionInterface && null !== $session) { $this->setSession($session = $session()); } if (null === $session) { @trigger_error(sprintf('Calling "%s()" when no session has been set is deprecated since Symfony 4.1 and will throw an exception in 5.0. Use "hasSession()" instead.', __METHOD__), \E_USER_DEPRECATED); // throw new \BadMethodCallException('Session has not been set.'); } return $session; } /* * Whether the request contains a Session which was started in one of the * previous requests. * * @return bool / public function hasPreviousSession() { // the check for $this->session avoids malicious users trying to fake a session cookie with proper name return $this->hasSession() && $this->cookies->has($this->getSession()->getName()); } /* * Whether the request contains a Session object. * * This method does not give any information about the state of the session object, * like whether the session is started or not. It is just a way to check if this Request * is associated with a Session instance. * * @return bool true when the Request contains a Session object, false otherwise / public function hasSession() { return null !== $this->session; } public function setSession(SessionInterface $session) { $this->session = $session; } /* * @internal / public function setSessionFactory(callable $factory) { $this->session = $factory; } /* * Returns the client IP addresses. * * In the returned array the most trusted IP address is first, and the * least trusted one last. The "real" client IP address is the last one, * but this is also the least trusted one. Trusted proxies are stripped. * * Use this method carefully; you should use getClientIp() instead. * * @return array The client IP addresses * * @see getClientIp() / public function getClientIps() { $ip = $this->server->get('REMOTE_ADDR'); if (!$this->isFromTrustedProxy()) { return [$ip]; } return $this->getTrustedValues(self::HEADER_X_FORWARDED_FOR, $ip) ?: [$ip]; } /* * Returns the client IP address. * * This method can read the client IP address from the "X-Forwarded-For" header * when trusted proxies were set via "setTrustedProxies()". The "X-Forwarded-For" * header value is a comma+space separated list of IP addresses, the left-most * being the original client, and each successive proxy that passed the request * adding the IP address where it received the request from. * * If your reverse proxy uses a different header name than "X-Forwarded-For", * ("Client-Ip" for instance), configure it via the $trustedHeaderSet * argument of the Request::setTrustedProxies() method instead. * * @return string\|null The client IP address * * @see getClientIps() * @see https://wikipedia.org/wiki/X-Forwarded-For / public function getClientIp() { $ipAddresses = $this->getClientIps(); return $ipAddresses[0]; } /* * Returns current script name. * * @return string / public function getScriptName() { return $this->server->get('SCRIPT_NAME', $this->server->get('ORIG_SCRIPT_NAME', '')); } /* * Returns the path being requested relative to the executed script. * * The path info always starts with a /. * * Suppose this request is instantiated from /mysite on localhost: * * * http://localhost/mysite returns an empty string * * http://localhost/mysite/about returns '/about' * * http://localhost/mysite/enco%20ded returns '/enco%20ded' * * http://localhost/mysite/about?var=1 returns '/about' * * @return string The raw path (i.e. not urldecoded) / public function getPathInfo() { if (null === $this->pathInfo) { $this->pathInfo = $this->preparePathInfo(); } return $this->pathInfo; } /* * Returns the root path from which this request is executed. * * Suppose that an index.php file instantiates this request object: * * * http://localhost/index.php returns an empty string * * http://localhost/index.php/page returns an empty string * * http://localhost/web/index.php returns '/web' * * http://localhost/we%20b/index.php returns '/we%20b' * * @return string The raw path (i.e. not urldecoded) / public function getBasePath() { if (null === $this->basePath) { $this->basePath = $this->prepareBasePath(); } return $this->basePath; } /* * Returns the root URL from which this request is executed. * * The base URL never ends with a /. * * This is similar to getBasePath(), except that it also includes the * script filename (e.g. index.php) if one exists. * * @return string The raw URL (i.e. not urldecoded) / public function getBaseUrl() { if (null === $this->baseUrl) { $this->baseUrl = $this->prepareBaseUrl(); } return $this->baseUrl; } /* * Gets the request's scheme. * * @return string / public function getScheme() { return $this->isSecure() ? 'https' : 'http'; } /* * Returns the port on which the request is made. * * This method can read the client port from the "X-Forwarded-Port" header * when trusted proxies were set via "setTrustedProxies()". * * The "X-Forwarded-Port" header must contain the client port. * * @return int\|string can be a string if fetched from the server bag / public function getPort() { if ($this->isFromTrustedProxy() && $host = $this->getTrustedValues(self::HEADER_X_FORWARDED_PORT)) { $host = $host[0]; } elseif ($this->isFromTrustedProxy() && $host = $this->getTrustedValues(self::HEADER_X_FORWARDED_HOST)) { $host = $host[0]; } elseif (!$host = $this->headers->get('HOST')) { return $this->server->get('SERVER_PORT'); } if ('[' === $host[0]) { $pos = strpos($host, ':', strrpos($host, ']')); } else { $pos = strrpos($host, ':'); } if (false !== $pos && $port = substr($host, $pos + 1)) { return (int) $port; } return 'https' === $this->getScheme() ? 443 : 80; } /* * Returns the user. * * @return string\|null / public function getUser() { return $this->headers->get('PHP_AUTH_USER'); } /* * Returns the password. * * @return string\|null / public function getPassword() { return $this->headers->get('PHP_AUTH_PW'); } /* * Gets the user info. * * @return string A user name and, optionally, scheme-specific information about how to gain authorization to access the server / public function getUserInfo() { $userinfo = $this->getUser(); $pass = $this->getPassword(); if ('' != $pass) { $userinfo .= ":$pass"; } return $userinfo; } /* * Returns the HTTP host being requested. * * The port name will be appended to the host if it's non-standard. * * @return string / public function getHttpHost() { $scheme = $this->getScheme(); $port = $this->getPort(); if (('http' == $scheme && 80 == $port) \|\| ('https' == $scheme && 443 == $port)) { return $this->getHost(); } return $this->getHost().':'.$port; } /* * Returns the requested URI (path and query string). * * @return string The raw URI (i.e. not URI decoded) / public function getRequestUri() { if (null === $this->requestUri) { $this->requestUri = $this->prepareRequestUri(); } return $this->requestUri; } /* * Gets the scheme and HTTP host. * * If the URL was called with basic authentication, the user * and the password are not added to the generated string. * * @return string The scheme and HTTP host / public function getSchemeAndHttpHost() { return $this->getScheme().'://'.$this->getHttpHost(); } /* * Generates a normalized URI (URL) for the Request. * * @return string A normalized URI (URL) for the Request * * @see getQueryString() / public function getUri() { if (null !== $qs = $this->getQueryString()) { $qs = '?'.$qs; } return $this->getSchemeAndHttpHost().$this->getBaseUrl().$this->getPathInfo().$qs; } /* * Generates a normalized URI for the given path. * * @param string $path A path to use instead of the current one * * @return string The normalized URI for the path / public function getUriForPath($path) { return $this->getSchemeAndHttpHost().$this->getBaseUrl().$path; } /* * Returns the path as relative reference from the current Request path. * * Only the URIs path component (no schema, host etc.) is relevant and must be given. * Both paths must be absolute and not contain relative parts. * Relative URLs from one resource to another are useful when generating self-contained downloadable document archives. * Furthermore, they can be used to reduce the link size in documents. * * Example target paths, given a base path of "/a/b/c/d": * - "/a/b/c/d" -> "" * - "/a/b/c/" -> "./" * - "/a/b/" -> "../" * - "/a/b/c/other" -> "other" * - "/a/x/y" -> "../../x/y" * * @param string $path The target path * * @return string The relative target path / public function getRelativeUriForPath($path) { // be sure that we are dealing with an absolute path if (!isset($path[0]) \|\| '/' !== $path[0]) { return $path; } if ($path === $basePath = $this->getPathInfo()) { return ''; } $sourceDirs = explode('/', isset($basePath[0]) && '/' === $basePath[0] ? substr($basePath, 1) : $basePath); $targetDirs = explode('/', substr($path, 1)); array_pop($sourceDirs); $targetFile = array_pop($targetDirs); foreach ($sourceDirs as $i => $dir) { if (isset($targetDirs[$i]) && $dir === $targetDirs[$i]) { unset($sourceDirs[$i], $targetDirs[$i]); } else { break; } } $targetDirs[] = $targetFile; $path = str_repeat('../', \count($sourceDirs)).implode('/', $targetDirs); // A reference to the same base directory or an empty subdirectory must be prefixed with "./". // This also applies to a segment with a colon character (e.g., "file:colon") that cannot be used // as the first segment of a relative-path reference, as it would be mistaken for a scheme name // (see https://tools.ietf.org/html/rfc3986#section-4.2). return !isset($path[0]) \|\| '/' === $path[0] \|\| false !== ($colonPos = strpos($path, ':')) && ($colonPos < ($slashPos = strpos($path, '/')) \|\| false === $slashPos) ? "./$path" : $path; } /* * Generates the normalized query string for the Request. * * It builds a normalized query string, where keys/value pairs are alphabetized * and have consistent escaping. * * @return string\|null A normalized query string for the Request / public function getQueryString() { $qs = static::normalizeQueryString($this->server->get('QUERY_STRING')); return '' === $qs ? null : $qs; } /* * Checks whether the request is secure or not. * * This method can read the client protocol from the "X-Forwarded-Proto" header * when trusted proxies were set via "setTrustedProxies()". * * The "X-Forwarded-Proto" header must contain the protocol: "https" or "http". * * @return bool / public function isSecure() { if ($this->isFromTrustedProxy() && $proto = $this->getTrustedValues(self::HEADER_X_FORWARDED_PROTO)) { return \in_array(strtolower($proto[0]), ['https', 'on', 'ssl', '1'], true); } $https = $this->server->get('HTTPS'); return !empty($https) && 'off' !== strtolower($https); } /* * Returns the host name. * * This method can read the client host name from the "X-Forwarded-Host" header * when trusted proxies were set via "setTrustedProxies()". * * The "X-Forwarded-Host" header must contain the client host name. * * @return string * * @throws SuspiciousOperationException when the host name is invalid or not trusted / public function getHost() { if ($this->isFromTrustedProxy() && $host = $this->getTrustedValues(self::HEADER_X_FORWARDED_HOST)) { $host = $host[0]; } elseif (!$host = $this->headers->get('HOST')) { if (!$host = $this->server->get('SERVER_NAME')) { $host = $this->server->get('SERVER_ADDR', ''); } } // trim and remove port number from host // host is lowercase as per RFC 952/2181 $host = strtolower(preg_replace('/:\d+$/', '', trim($host))); // as the host can come from the user (HTTP_HOST and depending on the configuration, SERVER_NAME too can come from the user) // check that it does not contain forbidden characters (see RFC 952 and RFC 2181) // use preg_replace() instead of preg_match() to prevent DoS attacks with long host names if ($host && '' !== preg_replace('/(?:^\[)?[a-zA-Z0-9-:\]_]+\.?/', '', $host)) { if (!$this->isHostValid) { return ''; } $this->isHostValid = false; throw new SuspiciousOperationException(sprintf('Invalid Host "%s".', $host)); } if (\count(self::$trustedHostPatterns) > 0) { // to avoid host header injection attacks, you should provide a list of trusted host patterns if (\in_array($host, self::$trustedHosts)) { return $host; } foreach (self::$trustedHostPatterns as $pattern) { if (preg_match($pattern, $host)) { self::$trustedHosts[] = $host; return $host; } } if (!$this->isHostValid) { return ''; } $this->isHostValid = false; throw new SuspiciousOperationException(sprintf('Untrusted Host "%s".', $host)); } return $host; } /* * Sets the request method. * * @param string $method / public function setMethod($method) { $this->method = null; $this->server->set('REQUEST_METHOD', $method); } /* * Gets the request "intended" method. * * If the X-HTTP-Method-Override header is set, and if the method is a POST, * then it is used to determine the "real" intended HTTP method. * * The _method request parameter can also be used to determine the HTTP method, * but only if enableHttpMethodParameterOverride() has been called. * * The method is always an uppercased string. * * @return string The request method * * @see getRealMethod() / public function getMethod() { if (null !== $this->method) { return $this->method; } $this->method = strtoupper($this->server->get('REQUEST_METHOD', 'GET')); if ('POST' !== $this->method) { return $this->method; } $method = $this->headers->get('X-HTTP-METHOD-OVERRIDE'); if (!$method && self::$httpMethodParameterOverride) { $method = $this->request->get('_method', $this->query->get('_method', 'POST')); } if (!\is_string($method)) { return $this->method; } $method = strtoupper($method); if (\in_array($method, ['GET', 'HEAD', 'POST', 'PUT', 'DELETE', 'CONNECT', 'OPTIONS', 'PATCH', 'PURGE', 'TRACE'], true)) { return $this->method = $method; } if (!preg_match('/^[A-Z]++$/D', $method)) { throw new SuspiciousOperationException(sprintf('Invalid method override "%s".', $method)); } return $this->method = $method; } /* * Gets the "real" request method. * * @return string The request method * * @see getMethod() / public function getRealMethod() { return strtoupper($this->server->get('REQUEST_METHOD', 'GET')); } /* * Gets the mime type associated with the format. * * @param string $format The format * * @return string\|null The associated mime type (null if not found) / public function getMimeType($format) { if (null === static::$formats) { static::initializeFormats(); } return isset(static::$formats[$format]) ? static::$formats[$format][0] : null; } /* * Gets the mime types associated with the format. * * @param string $format The format * * @return array The associated mime types / public static function getMimeTypes($format) { if (null === static::$formats) { static::initializeFormats(); } return isset(static::$formats[$format]) ? static::$formats[$format] : []; } /* * Gets the format associated with the mime type. * * @param string $mimeType The associated mime type * * @return string\|null The format (null if not found) / public function getFormat($mimeType) { $canonicalMimeType = null; if (false !== $pos = strpos($mimeType, ';')) { $canonicalMimeType = trim(substr($mimeType, 0, $pos)); } if (null === static::$formats) { static::initializeFormats(); } foreach (static::$formats as $format => $mimeTypes) { if (\in_array($mimeType, (array) $mimeTypes)) { return $format; } if (null !== $canonicalMimeType && \in_array($canonicalMimeType, (array) $mimeTypes)) { return $format; } } return null; } /* * Associates a format with mime types. * * @param string $format The format * @param string\|array $mimeTypes The associated mime types (the preferred one must be the first as it will be used as the content type) / public function setFormat($format, $mimeTypes) { if (null === static::$formats) { static::initializeFormats(); } static::$formats[$format] = \is_array($mimeTypes) ? $mimeTypes : [$mimeTypes]; } /* * Gets the request format. * * Here is the process to determine the format: * * * format defined by the user (with setRequestFormat()) * * _format request attribute * * $default * * @see getPreferredFormat * * @param string\|null $default The default format * * @return string\|null The request format / public function getRequestFormat($default = 'html') { if (null === $this->format) { $this->format = $this->attributes->get('_format'); } return null === $this->format ? $default : $this->format; } /* * Sets the request format. * * @param string $format The request format / public function setRequestFormat($format) { $this->format = $format; } /* * Gets the format associated with the request. * * @return string\|null The format (null if no content type is present) / public function getContentType() { return $this->getFormat($this->headers->get('CONTENT_TYPE')); } /* * Sets the default locale. * * @param string $locale / public function setDefaultLocale($locale) { $this->defaultLocale = $locale; if (null === $this->locale) { $this->setPhpDefaultLocale($locale); } } /* * Get the default locale. * * @return string / public function getDefaultLocale() { return $this->defaultLocale; } /* * Sets the locale. * * @param string $locale / public function setLocale($locale) { $this->setPhpDefaultLocale($this->locale = $locale); } /* * Get the locale. * * @return string / public function getLocale() { return null === $this->locale ? $this->defaultLocale : $this->locale; } /* * Checks if the request method is of specified type. * * @param string $method Uppercase request method (GET, POST etc) * * @return bool / public function isMethod($method) { return $this->getMethod() === strtoupper($method); } /* * Checks whether or not the method is safe. * * @see https://tools.ietf.org/html/rfc7231#section-4.2.1 * * @return bool / public function isMethodSafe() { if (\func_num_args() > 0) { @trigger_error(sprintf('Passing arguments to "%s()" has been deprecated since Symfony 4.4; use "%s::isMethodCacheable()" to check if the method is cacheable instead.', __METHOD__, __CLASS__), \E_USER_DEPRECATED); } return \in_array($this->getMethod(), ['GET', 'HEAD', 'OPTIONS', 'TRACE']); } /* * Checks whether or not the method is idempotent. * * @return bool / public function isMethodIdempotent() { return \in_array($this->getMethod(), ['HEAD', 'GET', 'PUT', 'DELETE', 'TRACE', 'OPTIONS', 'PURGE']); } /* * Checks whether the method is cacheable or not. * * @see https://tools.ietf.org/html/rfc7231#section-4.2.3 * * @return bool True for GET and HEAD, false otherwise / public function isMethodCacheable() { return \in_array($this->getMethod(), ['GET', 'HEAD']); } /* * Returns the protocol version. * * If the application is behind a proxy, the protocol version used in the * requests between the client and the proxy and between the proxy and the * server might be different. This returns the former (from the "Via" header) * if the proxy is trusted (see "setTrustedProxies()"), otherwise it returns * the latter (from the "SERVER_PROTOCOL" server parameter). * * @return string / public function getProtocolVersion() { if ($this->isFromTrustedProxy()) { preg_match('~^(HTTP/)?([1-9]\.[0-9]) ~', $this->headers->get('Via'), $matches); if ($matches) { return 'HTTP/'.$matches[2]; } } return $this->server->get('SERVER_PROTOCOL'); } /* * Returns the request body content. * * @param bool $asResource If true, a resource will be returned * * @return string\|resource The request body content or a resource to read the body stream * * @throws \LogicException / public function getContent($asResource = false) { $currentContentIsResource = \is_resource($this->content); if (true === $asResource) { if ($currentContentIsResource) { rewind($this->content); return $this->content; } // Content passed in parameter (test) if (\is_string($this->content)) { $resource = fopen('php://temp', 'r+'); fwrite($resource, $this->content); rewind($resource); return $resource; } $this->content = false; return fopen('php://input', 'rb'); } if ($currentContentIsResource) { rewind($this->content); return stream_get_contents($this->content); } if (null === $this->content \|\| false === $this->content) { $this->content = file_get_contents('php://input'); } return $this->content; } /* * Gets the Etags. * * @return array The entity tags / public function getETags() { return preg_split('/\s,\s/', $this->headers->get('if_none_match'), null, \PREG_SPLIT_NO_EMPTY); } /* * @return bool / public function isNoCache() { return $this->headers->hasCacheControlDirective('no-cache') \|\| 'no-cache' == $this->headers->get('Pragma'); } /* * Gets the preferred format for the response by inspecting, in the following order: * * the request format set using setRequestFormat * * the values of the Accept HTTP header. * * Note that if you use this method, you should send the "Vary: Accept" header * in the response to prevent any issues with intermediary HTTP caches. / public function getPreferredFormat(?string $default = 'html'): ?string { if (null !== $this->preferredFormat \|\| null !== $this->preferredFormat = $this->getRequestFormat(null)) { return $this->preferredFormat; } foreach ($this->getAcceptableContentTypes() as $mimeType) { if ($this->preferredFormat = $this->getFormat($mimeType)) { return $this->preferredFormat; } } return $default; } /* * Returns the preferred language. * * @param string[] $locales An array of ordered available locales * * @return string\|null The preferred locale / public function getPreferredLanguage(array $locales = null) { $preferredLanguages = $this->getLanguages(); if (empty($locales)) { return isset($preferredLanguages[0]) ? $preferredLanguages[0] : null; } if (!$preferredLanguages) { return $locales[0]; } $extendedPreferredLanguages = []; foreach ($preferredLanguages as $language) { $extendedPreferredLanguages[] = $language; if (false !== $position = strpos($language, '_')) { $superLanguage = substr($language, 0, $position); if (!\in_array($superLanguage, $preferredLanguages)) { $extendedPreferredLanguages[] = $superLanguage; } } } $preferredLanguages = array_values(array_intersect($extendedPreferredLanguages, $locales)); return isset($preferredLanguages[0]) ? $preferredLanguages[0] : $locales[0]; } /* * Gets a list of languages acceptable by the client browser. * * @return array Languages ordered in the user browser preferences / public function getLanguages() { if (null !== $this->languages) { return $this->languages; } $languages = AcceptHeader::fromString($this->headers->get('Accept-Language'))->all(); $this->languages = []; foreach ($languages as $lang => $acceptHeaderItem) { if (false !== strpos($lang, '-')) { $codes = explode('-', $lang); if ('i' === $codes[0]) { // Language not listed in ISO 639 that are not variants // of any listed language, which can be registered with the // i-prefix, such as i-cherokee if (\count($codes) > 1) { $lang = $codes[1]; } } else { for ($i = 0, $max = \count($codes); $i < $max; ++$i) { if (0 === $i) { $lang = strtolower($codes[0]); } else { $lang .= '_'.strtoupper($codes[$i]); } } } } $this->languages[] = $lang; } return $this->languages; } /* * Gets a list of charsets acceptable by the client browser. * * @return array List of charsets in preferable order / public function getCharsets() { if (null !== $this->charsets) { return $this->charsets; } return $this->charsets = array_keys(AcceptHeader::fromString($this->headers->get('Accept-Charset'))->all()); } /* * Gets a list of encodings acceptable by the client browser. * * @return array List of encodings in preferable order / public function getEncodings() { if (null !== $this->encodings) { return $this->encodings; } return $this->encodings = array_keys(AcceptHeader::fromString($this->headers->get('Accept-Encoding'))->all()); } /* * Gets a list of content types acceptable by the client browser. * * @return array List of content types in preferable order / public function getAcceptableContentTypes() { if (null !== $this->acceptableContentTypes) { return $this->acceptableContentTypes; } return $this->acceptableContentTypes = array_keys(AcceptHeader::fromString($this->headers->get('Accept'))->all()); } /* * Returns true if the request is a XMLHttpRequest. * * It works if your JavaScript library sets an X-Requested-With HTTP header. * It is known to work with common JavaScript frameworks: * * @see https://wikipedia.org/wiki/List_of_Ajax_frameworks#JavaScript * * @return bool true if the request is an XMLHttpRequest, false otherwise / public function isXmlHttpRequest() { return 'XMLHttpRequest' == $this->headers->get('X-Requested-With'); } / * The following methods are derived from code of the Zend Framework (1.10dev - 2010-01-24) * * Code subject to the new BSD license (https://framework.zend.com/license). * * Copyright (c) 2005-2010 Zend Technologies USA Inc. (https://www.zend.com/) / protected function prepareRequestUri() { $requestUri = ''; if ('1' == $this->server->get('IIS_WasUrlRewritten') && '' != $this->server->get('UNENCODED_URL')) { // IIS7 with URL Rewrite: make sure we get the unencoded URL (double slash problem) $requestUri = $this->server->get('UNENCODED_URL'); $this->server->remove('UNENCODED_URL'); $this->server->remove('IIS_WasUrlRewritten'); } elseif ($this->server->has('REQUEST_URI')) { $requestUri = $this->server->get('REQUEST_URI'); if ('' !== $requestUri && '/' === $requestUri[0]) { // To only use path and query remove the fragment. if (false !== $pos = strpos($requestUri, '#')) { $requestUri = substr($requestUri, 0, $pos); } } else { // HTTP proxy reqs setup request URI with scheme and host [and port] + the URL path, // only use URL path. $uriComponents = parse_url($requestUri); if (isset($uriComponents['path'])) { $requestUri = $uriComponents['path']; } if (isset($uriComponents['query'])) { $requestUri .= '?'.$uriComponents['query']; } } } elseif ($this->server->has('ORIG_PATH_INFO')) { // IIS 5.0, PHP as CGI $requestUri = $this->server->get('ORIG_PATH_INFO'); if ('' != $this->server->get('QUERY_STRING')) { $requestUri .= '?'.$this->server->get('QUERY_STRING'); } $this->server->remove('ORIG_PATH_INFO'); } // normalize the request URI to ease creating sub-requests from this request $this->server->set('REQUEST_URI', $requestUri); return $requestUri; } /* * Prepares the base URL. * * @return string / protected function prepareBaseUrl() { $filename = basename($this->server->get('SCRIPT_FILENAME')); if (basename($this->server->get('SCRIPT_NAME')) === $filename) { $baseUrl = $this->server->get('SCRIPT_NAME'); } elseif (basename($this->server->get('PHP_SELF')) === $filename) { $baseUrl = $this->server->get('PHP_SELF'); } elseif (basename($this->server->get('ORIG_SCRIPT_NAME')) === $filename) { $baseUrl = $this->server->get('ORIG_SCRIPT_NAME'); // 1and1 shared hosting compatibility } else { // Backtrack up the script_filename to find the portion matching // php_self $path = $this->server->get('PHP_SELF', ''); $file = $this->server->get('SCRIPT_FILENAME', ''); $segs = explode('/', trim($file, '/')); $segs = array_reverse($segs); $index = 0; $last = \count($segs); $baseUrl = ''; do { $seg = $segs[$index]; $baseUrl = '/'.$seg.$baseUrl; ++$index; } while ($last > $index && (false !== $pos = strpos($path, $baseUrl)) && 0 != $pos); } // Does the baseUrl have anything in common with the request_uri? $requestUri = $this->getRequestUri(); if ('' !== $requestUri && '/' !== $requestUri[0]) { $requestUri = '/'.$requestUri; } if ($baseUrl && null !== $prefix = $this->getUrlencodedPrefix($requestUri, $baseUrl)) { // full $baseUrl matches return $prefix; } if ($baseUrl && null !== $prefix = $this->getUrlencodedPrefix($requestUri, rtrim(\dirname($baseUrl), '/'.\DIRECTORY_SEPARATOR).'/')) { // directory portion of $baseUrl matches return rtrim($prefix, '/'.\DIRECTORY_SEPARATOR); } $truncatedRequestUri = $requestUri; if (false !== $pos = strpos($requestUri, '?')) { $truncatedRequestUri = substr($requestUri, 0, $pos); } $basename = basename($baseUrl); if (empty($basename) \|\| !strpos(rawurldecode($truncatedRequestUri), $basename)) { // no match whatsoever; set it blank return ''; } // If using mod_rewrite or ISAPI_Rewrite strip the script filename // out of baseUrl. $pos !== 0 makes sure it is not matching a value // from PATH_INFO or QUERY_STRING if (\strlen($requestUri) >= \strlen($baseUrl) && (false !== $pos = strpos($requestUri, $baseUrl)) && 0 !== $pos) { $baseUrl = substr($requestUri, 0, $pos + \strlen($baseUrl)); } return rtrim($baseUrl, '/'.\DIRECTORY_SEPARATOR); } /* * Prepares the base path. * * @return string base path / protected function prepareBasePath() { $baseUrl = $this->getBaseUrl(); if (empty($baseUrl)) { return ''; } $filename = basename($this->server->get('SCRIPT_FILENAME')); if (basename($baseUrl) === $filename) { $basePath = \dirname($baseUrl); } else { $basePath = $baseUrl; } if ('\\' === \DIRECTORY_SEPARATOR) { $basePath = str_replace('\\', '/', $basePath); } return rtrim($basePath, '/'); } /* * Prepares the path info. * * @return string path info / protected function preparePathInfo() { if (null === ($requestUri = $this->getRequestUri())) { return '/'; } // Remove the query string from REQUEST_URI if (false !== $pos = strpos($requestUri, '?')) { $requestUri = substr($requestUri, 0, $pos); } if ('' !== $requestUri && '/' !== $requestUri[0]) { $requestUri = '/'.$requestUri; } if (null === ($baseUrl = $this->getBaseUrl())) { return $requestUri; } $pathInfo = substr($requestUri, \strlen($baseUrl)); if (false === $pathInfo \|\| '' === $pathInfo) { // If substr() returns false then PATH_INFO is set to an empty string return '/'; } return (string) $pathInfo; } /* * Initializes HTTP request formats. / protected static function initializeFormats() { static::$formats = [ 'html' => ['text/html', 'application/xhtml+xml'], 'txt' => ['text/plain'], 'js' => ['application/javascript', 'application/x-javascript', 'text/javascript'], 'css' => ['text/css'], 'json' => ['application/json', 'application/x-json'], 'jsonld' => ['application/ld+json'], 'xml' => ['text/xml', 'application/xml', 'application/x-xml'], 'rdf' => ['application/rdf+xml'], 'atom' => ['application/atom+xml'], 'rss' => ['application/rss+xml'], 'form' => ['application/x-www-form-urlencoded'], ]; } private function setPhpDefaultLocale(string $locale): void { // if either the class Locale doesn't exist, or an exception is thrown when // setting the default locale, the intl module is not installed, and // the call can be ignored: try { if (class_exists('Locale', false)) { \Locale::setDefault($locale); } } catch (\Exception $e) { } } /* * Returns the prefix as encoded in the string when the string starts with * the given prefix, null otherwise. / private function getUrlencodedPrefix(string $string, string $prefix): ?string { if (0 !== strpos(rawurldecode($string), $prefix)) { return null; } $len = \strlen($prefix); if (preg_match(sprintf('#^(%%[[:xdigit:]]{2}\|.){%d}#', $len), $string, $match)) { return $match[0]; } return null; } private static function createRequestFromFactory(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null): self { if (self::$requestFactory) { $request = (self::$requestFactory)($query, $request, $attributes, $cookies, $files, $server, $content); if (!$request instanceof self) { throw new \LogicException('The Request factory must return an instance of Symfony\Component\HttpFoundation\Request.'); } return $request; } return new static($query, $request, $attributes, $cookies, $files, $server, $content); } /* * Indicates whether this request originated from a trusted proxy. * * This can be useful to determine whether or not to trust the * contents of a proxy-specific header. * * @return bool true if the request came from a trusted proxy, false otherwise */ public function isFromTrustedProxy() { return self::$trustedProxies && IpUtils::checkIp($this->server->get('REMOTE_ADDR'), self::$trustedProxies); } private function getTrustedValues(int $type, string $ip = null): array { $clientValues = []; $forwardedValues = []; if ((self::$trustedHeaderSet & $type) && $this->headers->has(self::$trustedHeaders[$type])) { foreach (explode(',', $this->headers->get(self::$trustedHeaders[$type])) as $v) { $clientValues[] = (self::HEADER_X_FORWARDED_PORT === $type ? '0.0.0.0:' : '').trim($v); } } if ((self::$trustedHeaderSet & self::HEADER_FORWARDED) && $this->headers->has(self::$trustedHeaders[self::HEADER_FORWARDED])) { $forwarded = $this->headers->get(self::$trustedHeaders[self::HEADER_FORWARDED]); $parts = HeaderUtils::split($forwarded, ',;='); $forwardedValues = []; $param = self::$forwardedParams[$type]; foreach ($parts as $subParts) { if (null === $v = HeaderUtils::combine($subParts)[$param] ?? null) { continue; } if (self::HEADER_X_FORWARDED_PORT === $type) { if (']' === substr($v, -1) \|\| false === $v = strrchr($v, ':')) { $v = $this->isSecure() ? ':443' : ':80'; } $v = '0.0.0.0'.$v; } $forwardedValues[] = $v; } } if (null !== $ip) { $clientValues = $this->normalizeAndFilterClientIps($clientValues, $ip); $forwardedValues = $this->normalizeAndFilterClientIps($forwardedValues, $ip); } if ($forwardedValues === $clientValues \|\| !$clientValues) { return $forwardedValues; } if (!$forwardedValues) { return $clientValues; } if (!$this->isForwardedValid) { return null !== $ip ? ['0.0.0.0', $ip] : []; } $this->isForwardedValid = false; throw new ConflictingHeadersException(sprintf('The request has both a trusted "%s" header and a trusted "%s" header, conflicting with each other. You should either configure your proxy to remove one of them, or configure your project to distrust the offending one.', self::$trustedHeaders[self::HEADER_FORWARDED], self::$trustedHeaders[$type])); } private function normalizeAndFilterClientIps(array $clientIps, string $ip): array { if (!$clientIps) { return []; } $clientIps[] = $ip; // Complete the IP chain with the IP the request actually came from $firstTrustedIp = null; foreach ($clientIps as $key => $clientIp) { if (strpos($clientIp, '.')) { // Strip :port from IPv4 addresses. This is allowed in Forwarded // and may occur in X-Forwarded-For. $i = strpos($clientIp, ':'); if ($i) { $clientIps[$key] = $clientIp = substr($clientIp, 0, $i); } } elseif (0 === strpos($clientIp, '[')) { // Strip brackets and :port from IPv6 addresses. $i = strpos($clientIp, ']', 1); $clientIps[$key] = $clientIp = substr($clientIp, 1, $i - 1); } if (!filter_var($clientIp, \FILTER_VALIDATE_IP)) { unset($clientIps[$key]); continue; } if (IpUtils::checkIp($clientIp, self::$trustedProxies)) { unset($clientIps[$key]); // Fallback to this when the client IP falls into the range of trusted proxies if (null === $firstTrustedIp) { $firstTrustedIp = $clientIp; } } } // Now the IP chain contains only untrusted proxies and the client IP return $clientIps ? array_reverse($clientIps) : [$firstTrustedIp]; } } Back

Edit File : Request.php | Size : 64.43 KB

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation;

use Symfony\Component\HttpFoundation\Exception\ConflictingHeadersException;
use Symfony\Component\HttpFoundation\Exception\SuspiciousOperationException;
use Symfony\Component\HttpFoundation\Session\SessionInterface;

// Help opcache.preload discover always-needed symbols
class_exists(AcceptHeader::class);
class_exists(FileBag::class);
class_exists(HeaderBag::class);
class_exists(HeaderUtils::class);
class_exists(ParameterBag::class);
class_exists(ServerBag::class);

/**
 * Request represents an HTTP request.
 *
 * The methods dealing with URL accept / return a raw path (% encoded):
 *   * getBasePath
 *   * getBaseUrl
 *   * getPathInfo
 *   * getRequestUri
 *   * getUri
 *   * getUriForPath
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Request
{
    const HEADER_FORWARDED = 0b00001; // When using RFC 7239
    const HEADER_X_FORWARDED_FOR = 0b00010;
    const HEADER_X_FORWARDED_HOST = 0b00100;
    const HEADER_X_FORWARDED_PROTO = 0b01000;
    const HEADER_X_FORWARDED_PORT = 0b10000;
    const HEADER_X_FORWARDED_ALL = 0b11110; // All "X-Forwarded-*" headers
    const HEADER_X_FORWARDED_AWS_ELB = 0b11010; // AWS ELB doesn't send X-Forwarded-Host

const METHOD_HEAD = 'HEAD';
    const METHOD_GET = 'GET';
    const METHOD_POST = 'POST';
    const METHOD_PUT = 'PUT';
    const METHOD_PATCH = 'PATCH';
    const METHOD_DELETE = 'DELETE';
    const METHOD_PURGE = 'PURGE';
    const METHOD_OPTIONS = 'OPTIONS';
    const METHOD_TRACE = 'TRACE';
    const METHOD_CONNECT = 'CONNECT';

/**
     * @var string[]
     */
    protected static $trustedProxies = [];

/**
     * @var string[]
     */
    protected static $trustedHostPatterns = [];

/**
     * @var string[]
     */
    protected static $trustedHosts = [];

protected static $httpMethodParameterOverride = false;

/**
     * Custom parameters.
     *
     * @var ParameterBag
     */
    public $attributes;

/**
     * Request body parameters ($_POST).
     *
     * @var ParameterBag
     */
    public $request;

/**
     * Query string parameters ($_GET).
     *
     * @var ParameterBag
     */
    public $query;

/**
     * Server and execution environment parameters ($_SERVER).
     *
     * @var ServerBag
     */
    public $server;

/**
     * Uploaded files ($_FILES).
     *
     * @var FileBag
     */
    public $files;

/**
     * Cookies ($_COOKIE).
     *
     * @var ParameterBag
     */
    public $cookies;

/**
     * Headers (taken from the $_SERVER).
     *
     * @var HeaderBag
     */
    public $headers;

/**
     * @var string|resource|false|null
     */
    protected $content;

/**
     * @var array
     */
    protected $languages;

/**
     * @var array
     */
    protected $charsets;

/**
     * @var array
     */
    protected $encodings;

/**
     * @var array
     */
    protected $acceptableContentTypes;

/**
     * @var string
     */
    protected $pathInfo;

/**
     * @var string
     */
    protected $requestUri;

/**
     * @var string
     */
    protected $baseUrl;

/**
     * @var string
     */
    protected $basePath;

/**
     * @var string
     */
    protected $method;

/**
     * @var string
     */
    protected $format;

/**
     * @var SessionInterface
     */
    protected $session;

/**
     * @var string
     */
    protected $locale;

/**
     * @var string
     */
    protected $defaultLocale = 'en';

/**
     * @var array
     */
    protected static $formats;

protected static $requestFactory;

/**
     * @var string|null
     */
    private $preferredFormat;
    private $isHostValid = true;
    private $isForwardedValid = true;

private static $trustedHeaderSet = -1;

private static $forwardedParams = [
        self::HEADER_X_FORWARDED_FOR => 'for',
        self::HEADER_X_FORWARDED_HOST => 'host',
        self::HEADER_X_FORWARDED_PROTO => 'proto',
        self::HEADER_X_FORWARDED_PORT => 'host',
    ];

/**
     * Names for headers that can be trusted when
     * using trusted proxies.
     *
     * The FORWARDED header is the standard as of rfc7239.
     *
     * The other headers are non-standard, but widely used
     * by popular reverse proxies (like Apache mod_proxy or Amazon EC2).
     */
    private static $trustedHeaders = [
        self::HEADER_FORWARDED => 'FORWARDED',
        self::HEADER_X_FORWARDED_FOR => 'X_FORWARDED_FOR',
        self::HEADER_X_FORWARDED_HOST => 'X_FORWARDED_HOST',
        self::HEADER_X_FORWARDED_PROTO => 'X_FORWARDED_PROTO',
        self::HEADER_X_FORWARDED_PORT => 'X_FORWARDED_PORT',
    ];

/**
     * @param array                $query      The GET parameters
     * @param array                $request    The POST parameters
     * @param array                $attributes The request attributes (parameters parsed from the PATH_INFO, ...)
     * @param array                $cookies    The COOKIE parameters
     * @param array                $files      The FILES parameters
     * @param array                $server     The SERVER parameters
     * @param string|resource|null $content    The raw body data
     */
    public function __construct(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
    {
        $this->initialize($query, $request, $attributes, $cookies, $files, $server, $content);
    }

/**
     * Sets the parameters for this request.
     *
     * This method also re-initializes all properties.
     *
     * @param array                $query      The GET parameters
     * @param array                $request    The POST parameters
     * @param array                $attributes The request attributes (parameters parsed from the PATH_INFO, ...)
     * @param array                $cookies    The COOKIE parameters
     * @param array                $files      The FILES parameters
     * @param array                $server     The SERVER parameters
     * @param string|resource|null $content    The raw body data
     */
    public function initialize(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null)
    {
        $this->request = new ParameterBag($request);
        $this->query = new ParameterBag($query);
        $this->attributes = new ParameterBag($attributes);
        $this->cookies = new ParameterBag($cookies);
        $this->files = new FileBag($files);
        $this->server = new ServerBag($server);
        $this->headers = new HeaderBag($this->server->getHeaders());

$this->content = $content;
        $this->languages = null;
        $this->charsets = null;
        $this->encodings = null;
        $this->acceptableContentTypes = null;
        $this->pathInfo = null;
        $this->requestUri = null;
        $this->baseUrl = null;
        $this->basePath = null;
        $this->method = null;
        $this->format = null;
    }

/**
     * Creates a new request with values from PHP's super globals.
     *
     * @return static
     */
    public static function createFromGlobals()
    {
        $request = self::createRequestFromFactory($_GET, $_POST, [], $_COOKIE, $_FILES, $_SERVER);

if (0 === strpos($request->headers->get('CONTENT_TYPE'), 'application/x-www-form-urlencoded')
            && \in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), ['PUT', 'DELETE', 'PATCH'])
        ) {
            parse_str($request->getContent(), $data);
            $request->request = new ParameterBag($data);
        }

return $request;
    }

/**
     * Creates a Request based on a given URI and configuration.
     *
     * The information contained in the URI always take precedence
     * over the other information (server and parameters).
     *
     * @param string               $uri        The URI
     * @param string               $method     The HTTP method
     * @param array                $parameters The query (GET) or request (POST) parameters
     * @param array                $cookies    The request cookies ($_COOKIE)
     * @param array                $files      The request files ($_FILES)
     * @param array                $server     The server parameters ($_SERVER)
     * @param string|resource|null $content    The raw body data
     *
     * @return static
     */
    public static function create($uri, $method = 'GET', $parameters = [], $cookies = [], $files = [], $server = [], $content = null)
    {
        $server = array_replace([
            'SERVER_NAME' => 'localhost',
            'SERVER_PORT' => 80,
            'HTTP_HOST' => 'localhost',
            'HTTP_USER_AGENT' => 'Symfony',
            'HTTP_ACCEPT' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
            'HTTP_ACCEPT_LANGUAGE' => 'en-us,en;q=0.5',
            'HTTP_ACCEPT_CHARSET' => 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
            'REMOTE_ADDR' => '127.0.0.1',
            'SCRIPT_NAME' => '',
            'SCRIPT_FILENAME' => '',
            'SERVER_PROTOCOL' => 'HTTP/1.1',
            'REQUEST_TIME' => time(),
        ], $server);

$server['PATH_INFO'] = '';
        $server['REQUEST_METHOD'] = strtoupper($method);

$components = parse_url($uri);
        if (isset($components['host'])) {
            $server['SERVER_NAME'] = $components['host'];
            $server['HTTP_HOST'] = $components['host'];
        }

if (isset($components['scheme'])) {
            if ('https' === $components['scheme']) {
                $server['HTTPS'] = 'on';
                $server['SERVER_PORT'] = 443;
            } else {
                unset($server['HTTPS']);
                $server['SERVER_PORT'] = 80;
            }
        }

if (isset($components['port'])) {
            $server['SERVER_PORT'] = $components['port'];
            $server['HTTP_HOST'] .= ':'.$components['port'];
        }

if (isset($components['user'])) {
            $server['PHP_AUTH_USER'] = $components['user'];
        }

if (isset($components['pass'])) {
            $server['PHP_AUTH_PW'] = $components['pass'];
        }

if (!isset($components['path'])) {
            $components['path'] = '/';
        }

switch (strtoupper($method)) {
            case 'POST':
            case 'PUT':
            case 'DELETE':
                if (!isset($server['CONTENT_TYPE'])) {
                    $server['CONTENT_TYPE'] = 'application/x-www-form-urlencoded';
                }
                // no break
            case 'PATCH':
                $request = $parameters;
                $query = [];
                break;
            default:
                $request = [];
                $query = $parameters;
                break;
        }

$queryString = '';
        if (isset($components['query'])) {
            parse_str(html_entity_decode($components['query']), $qs);

if ($query) {
                $query = array_replace($qs, $query);
                $queryString = http_build_query($query, '', '&');
            } else {
                $query = $qs;
                $queryString = $components['query'];
            }
        } elseif ($query) {
            $queryString = http_build_query($query, '', '&');
        }

$server['REQUEST_URI'] = $components['path'].('' !== $queryString ? '?'.$queryString : '');
        $server['QUERY_STRING'] = $queryString;

return self::createRequestFromFactory($query, $request, [], $cookies, $files, $server, $content);
    }

/**
     * Sets a callable able to create a Request instance.
     *
     * This is mainly useful when you need to override the Request class
     * to keep BC with an existing system. It should not be used for any
     * other purpose.
     *
     * @param callable|null $callable A PHP callable
     */
    public static function setFactory($callable)
    {
        self::$requestFactory = $callable;
    }

/**
     * Clones a request and overrides some of its parameters.
     *
     * @param array $query      The GET parameters
     * @param array $request    The POST parameters
     * @param array $attributes The request attributes (parameters parsed from the PATH_INFO, ...)
     * @param array $cookies    The COOKIE parameters
     * @param array $files      The FILES parameters
     * @param array $server     The SERVER parameters
     *
     * @return static
     */
    public function duplicate(array $query = null, array $request = null, array $attributes = null, array $cookies = null, array $files = null, array $server = null)
    {
        $dup = clone $this;
        if (null !== $query) {
            $dup->query = new ParameterBag($query);
        }
        if (null !== $request) {
            $dup->request = new ParameterBag($request);
        }
        if (null !== $attributes) {
            $dup->attributes = new ParameterBag($attributes);
        }
        if (null !== $cookies) {
            $dup->cookies = new ParameterBag($cookies);
        }
        if (null !== $files) {
            $dup->files = new FileBag($files);
        }
        if (null !== $server) {
            $dup->server = new ServerBag($server);
            $dup->headers = new HeaderBag($dup->server->getHeaders());
        }
        $dup->languages = null;
        $dup->charsets = null;
        $dup->encodings = null;
        $dup->acceptableContentTypes = null;
        $dup->pathInfo = null;
        $dup->requestUri = null;
        $dup->baseUrl = null;
        $dup->basePath = null;
        $dup->method = null;
        $dup->format = null;

if (!$dup->get('_format') && $this->get('_format')) {
            $dup->attributes->set('_format', $this->get('_format'));
        }

if (!$dup->getRequestFormat(null)) {
            $dup->setRequestFormat($this->getRequestFormat(null));
        }

return $dup;
    }

/**
     * Clones the current request.
     *
     * Note that the session is not cloned as duplicated requests
     * are most of the time sub-requests of the main one.
     */
    public function __clone()
    {
        $this->query = clone $this->query;
        $this->request = clone $this->request;
        $this->attributes = clone $this->attributes;
        $this->cookies = clone $this->cookies;
        $this->files = clone $this->files;
        $this->server = clone $this->server;
        $this->headers = clone $this->headers;
    }

/**
     * Returns the request as a string.
     *
     * @return string The request
     */
    public function __toString()
    {
        try {
            $content = $this->getContent();
        } catch (\LogicException $e) {
            if (\PHP_VERSION_ID >= 70400) {
                throw $e;
            }

return trigger_error($e, \E_USER_ERROR);
        }

$cookieHeader = '';
        $cookies = [];

foreach ($this->cookies as $k => $v) {
            $cookies[] = $k.'='.$v;
        }

if (!empty($cookies)) {
            $cookieHeader = 'Cookie: '.implode('; ', $cookies)."\r\n";
        }

return
            sprintf('%s %s %s', $this->getMethod(), $this->getRequestUri(), $this->server->get('SERVER_PROTOCOL'))."\r\n".
            $this->headers.
            $cookieHeader."\r\n".
            $content;
    }

/**
     * Overrides the PHP global variables according to this request instance.
     *
     * It overrides $_GET, $_POST, $_REQUEST, $_SERVER, $_COOKIE.
     * $_FILES is never overridden, see rfc1867
     */
    public function overrideGlobals()
    {
        $this->server->set('QUERY_STRING', static::normalizeQueryString(http_build_query($this->query->all(), '', '&')));

$_GET = $this->query->all();
        $_POST = $this->request->all();
        $_SERVER = $this->server->all();
        $_COOKIE = $this->cookies->all();

foreach ($this->headers->all() as $key => $value) {
            $key = strtoupper(str_replace('-', '_', $key));
            if (\in_array($key, ['CONTENT_TYPE', 'CONTENT_LENGTH', 'CONTENT_MD5'], true)) {
                $_SERVER[$key] = implode(', ', $value);
            } else {
                $_SERVER['HTTP_'.$key] = implode(', ', $value);
            }
        }

$request = ['g' => $_GET, 'p' => $_POST, 'c' => $_COOKIE];

$requestOrder = ini_get('request_order') ?: ini_get('variables_order');
        $requestOrder = preg_replace('#[^cgp]#', '', strtolower($requestOrder)) ?: 'gp';

$_REQUEST = [[]];

foreach (str_split($requestOrder) as $order) {
            $_REQUEST[] = $request[$order];
        }

$_REQUEST = array_merge(...$_REQUEST);
    }

/**
     * Sets a list of trusted proxies.
     *
     * You should only list the reverse proxies that you manage directly.
     *
     * @param array $proxies          A list of trusted proxies, the string 'REMOTE_ADDR' will be replaced with $_SERVER['REMOTE_ADDR']
     * @param int   $trustedHeaderSet A bit field of Request::HEADER_*, to set which headers to trust from your proxies
     *
     * @throws \InvalidArgumentException When $trustedHeaderSet is invalid
     */
    public static function setTrustedProxies(array $proxies, int $trustedHeaderSet)
    {
        self::$trustedProxies = array_reduce($proxies, function ($proxies, $proxy) {
            if ('REMOTE_ADDR' !== $proxy) {
                $proxies[] = $proxy;
            } elseif (isset($_SERVER['REMOTE_ADDR'])) {
                $proxies[] = $_SERVER['REMOTE_ADDR'];
            }

return $proxies;
        }, []);
        self::$trustedHeaderSet = $trustedHeaderSet;
    }

/**
     * Gets the list of trusted proxies.
     *
     * @return array An array of trusted proxies
     */
    public static function getTrustedProxies()
    {
        return self::$trustedProxies;
    }

/**
     * Gets the set of trusted headers from trusted proxies.
     *
     * @return int A bit field of Request::HEADER_* that defines which headers are trusted from your proxies
     */
    public static function getTrustedHeaderSet()
    {
        return self::$trustedHeaderSet;
    }

/**
     * Sets a list of trusted host patterns.
     *
     * You should only list the hosts you manage using regexs.
     *
     * @param array $hostPatterns A list of trusted host patterns
     */
    public static function setTrustedHosts(array $hostPatterns)
    {
        self::$trustedHostPatterns = array_map(function ($hostPattern) {
            return sprintf('{%s}i', $hostPattern);
        }, $hostPatterns);
        // we need to reset trusted hosts on trusted host patterns change
        self::$trustedHosts = [];
    }

/**
     * Gets the list of trusted host patterns.
     *
     * @return array An array of trusted host patterns
     */
    public static function getTrustedHosts()
    {
        return self::$trustedHostPatterns;
    }

/**
     * Normalizes a query string.
     *
     * It builds a normalized query string, where keys/value pairs are alphabetized,
     * have consistent escaping and unneeded delimiters are removed.
     *
     * @param string $qs Query string
     *
     * @return string A normalized query string for the Request
     */
    public static function normalizeQueryString($qs)
    {
        if ('' === ($qs ?? '')) {
            return '';
        }

parse_str($qs, $qs);
        ksort($qs);

return http_build_query($qs, '', '&', \PHP_QUERY_RFC3986);
    }

/**
     * Enables support for the _method request parameter to determine the intended HTTP method.
     *
     * Be warned that enabling this feature might lead to CSRF issues in your code.
     * Check that you are using CSRF tokens when required.
     * If the HTTP method parameter override is enabled, an html-form with method "POST" can be altered
     * and used to send a "PUT" or "DELETE" request via the _method request parameter.
     * If these methods are not protected against CSRF, this presents a possible vulnerability.
     *
     * The HTTP method can only be overridden when the real HTTP method is POST.
     */
    public static function enableHttpMethodParameterOverride()
    {
        self::$httpMethodParameterOverride = true;
    }

/**
     * Checks whether support for the _method request parameter is enabled.
     *
     * @return bool True when the _method request parameter is enabled, false otherwise
     */
    public static function getHttpMethodParameterOverride()
    {
        return self::$httpMethodParameterOverride;
    }

/**
     * Gets a "parameter" value from any bag.
     *
     * This method is mainly useful for libraries that want to provide some flexibility. If you don't need the
     * flexibility in controllers, it is better to explicitly get request parameters from the appropriate
     * public property instead (attributes, query, request).
     *
     * Order of precedence: PATH (routing placeholders or custom attributes), GET, BODY
     *
     * @param string $key     The key
     * @param mixed  $default The default value if the parameter key does not exist
     *
     * @return mixed
     */
    public function get($key, $default = null)
    {
        if ($this !== $result = $this->attributes->get($key, $this)) {
            return $result;
        }

if ($this !== $result = $this->query->get($key, $this)) {
            return $result;
        }

if ($this !== $result = $this->request->get($key, $this)) {
            return $result;
        }

return $default;
    }

/**
     * Gets the Session.
     *
     * @return SessionInterface The session
     */
    public function getSession()
    {
        $session = $this->session;
        if (!$session instanceof SessionInterface && null !== $session) {
            $this->setSession($session = $session());
        }

if (null === $session) {
            @trigger_error(sprintf('Calling "%s()" when no session has been set is deprecated since Symfony 4.1 and will throw an exception in 5.0. Use "hasSession()" instead.', __METHOD__), \E_USER_DEPRECATED);
            // throw new \BadMethodCallException('Session has not been set.');
        }

return $session;
    }

/**
     * Whether the request contains a Session which was started in one of the
     * previous requests.
     *
     * @return bool
     */
    public function hasPreviousSession()
    {
        // the check for $this->session avoids malicious users trying to fake a session cookie with proper name
        return $this->hasSession() && $this->cookies->has($this->getSession()->getName());
    }

/**
     * Whether the request contains a Session object.
     *
     * This method does not give any information about the state of the session object,
     * like whether the session is started or not. It is just a way to check if this Request
     * is associated with a Session instance.
     *
     * @return bool true when the Request contains a Session object, false otherwise
     */
    public function hasSession()
    {
        return null !== $this->session;
    }

public function setSession(SessionInterface $session)
    {
        $this->session = $session;
    }

/**
     * @internal
     */
    public function setSessionFactory(callable $factory)
    {
        $this->session = $factory;
    }

/**
     * Returns the client IP addresses.
     *
     * In the returned array the most trusted IP address is first, and the
     * least trusted one last. The "real" client IP address is the last one,
     * but this is also the least trusted one. Trusted proxies are stripped.
     *
     * Use this method carefully; you should use getClientIp() instead.
     *
     * @return array The client IP addresses
     *
     * @see getClientIp()
     */
    public function getClientIps()
    {
        $ip = $this->server->get('REMOTE_ADDR');

if (!$this->isFromTrustedProxy()) {
            return [$ip];
        }

return $this->getTrustedValues(self::HEADER_X_FORWARDED_FOR, $ip) ?: [$ip];
    }

/**
     * Returns the client IP address.
     *
     * This method can read the client IP address from the "X-Forwarded-For" header
     * when trusted proxies were set via "setTrustedProxies()". The "X-Forwarded-For"
     * header value is a comma+space separated list of IP addresses, the left-most
     * being the original client, and each successive proxy that passed the request
     * adding the IP address where it received the request from.
     *
     * If your reverse proxy uses a different header name than "X-Forwarded-For",
     * ("Client-Ip" for instance), configure it via the $trustedHeaderSet
     * argument of the Request::setTrustedProxies() method instead.
     *
     * @return string|null The client IP address
     *
     * @see getClientIps()
     * @see https://wikipedia.org/wiki/X-Forwarded-For
     */
    public function getClientIp()
    {
        $ipAddresses = $this->getClientIps();

return $ipAddresses[0];
    }

/**
     * Returns current script name.
     *
     * @return string
     */
    public function getScriptName()
    {
        return $this->server->get('SCRIPT_NAME', $this->server->get('ORIG_SCRIPT_NAME', ''));
    }

/**
     * Returns the path being requested relative to the executed script.
     *
     * The path info always starts with a /.
     *
     * Suppose this request is instantiated from /mysite on localhost:
     *
     *  * http://localhost/mysite              returns an empty string
     *  * http://localhost/mysite/about        returns '/about'
     *  * http://localhost/mysite/enco%20ded   returns '/enco%20ded'
     *  * http://localhost/mysite/about?var=1  returns '/about'
     *
     * @return string The raw path (i.e. not urldecoded)
     */
    public function getPathInfo()
    {
        if (null === $this->pathInfo) {
            $this->pathInfo = $this->preparePathInfo();
        }

return $this->pathInfo;
    }

/**
     * Returns the root path from which this request is executed.
     *
     * Suppose that an index.php file instantiates this request object:
     *
     *  * http://localhost/index.php         returns an empty string
     *  * http://localhost/index.php/page    returns an empty string
     *  * http://localhost/web/index.php     returns '/web'
     *  * http://localhost/we%20b/index.php  returns '/we%20b'
     *
     * @return string The raw path (i.e. not urldecoded)
     */
    public function getBasePath()
    {
        if (null === $this->basePath) {
            $this->basePath = $this->prepareBasePath();
        }

return $this->basePath;
    }

/**
     * Returns the root URL from which this request is executed.
     *
     * The base URL never ends with a /.
     *
     * This is similar to getBasePath(), except that it also includes the
     * script filename (e.g. index.php) if one exists.
     *
     * @return string The raw URL (i.e. not urldecoded)
     */
    public function getBaseUrl()
    {
        if (null === $this->baseUrl) {
            $this->baseUrl = $this->prepareBaseUrl();
        }

return $this->baseUrl;
    }

/**
     * Gets the request's scheme.
     *
     * @return string
     */
    public function getScheme()
    {
        return $this->isSecure() ? 'https' : 'http';
    }

/**
     * Returns the port on which the request is made.
     *
     * This method can read the client port from the "X-Forwarded-Port" header
     * when trusted proxies were set via "setTrustedProxies()".
     *
     * The "X-Forwarded-Port" header must contain the client port.
     *
     * @return int|string can be a string if fetched from the server bag
     */
    public function getPort()
    {
        if ($this->isFromTrustedProxy() && $host = $this->getTrustedValues(self::HEADER_X_FORWARDED_PORT)) {
            $host = $host[0];
        } elseif ($this->isFromTrustedProxy() && $host = $this->getTrustedValues(self::HEADER_X_FORWARDED_HOST)) {
            $host = $host[0];
        } elseif (!$host = $this->headers->get('HOST')) {
            return $this->server->get('SERVER_PORT');
        }

if ('[' === $host[0]) {
            $pos = strpos($host, ':', strrpos($host, ']'));
        } else {
            $pos = strrpos($host, ':');
        }

if (false !== $pos && $port = substr($host, $pos + 1)) {
            return (int) $port;
        }

return 'https' === $this->getScheme() ? 443 : 80;
    }

/**
     * Returns the user.
     *
     * @return string|null
     */
    public function getUser()
    {
        return $this->headers->get('PHP_AUTH_USER');
    }

/**
     * Returns the password.
     *
     * @return string|null
     */
    public function getPassword()
    {
        return $this->headers->get('PHP_AUTH_PW');
    }

/**
     * Gets the user info.
     *
     * @return string A user name and, optionally, scheme-specific information about how to gain authorization to access the server
     */
    public function getUserInfo()
    {
        $userinfo = $this->getUser();

$pass = $this->getPassword();
        if ('' != $pass) {
            $userinfo .= ":$pass";
        }

return $userinfo;
    }

/**
     * Returns the HTTP host being requested.
     *
     * The port name will be appended to the host if it's non-standard.
     *
     * @return string
     */
    public function getHttpHost()
    {
        $scheme = $this->getScheme();
        $port = $this->getPort();

if (('http' == $scheme && 80 == $port) || ('https' == $scheme && 443 == $port)) {
            return $this->getHost();
        }

return $this->getHost().':'.$port;
    }

/**
     * Returns the requested URI (path and query string).
     *
     * @return string The raw URI (i.e. not URI decoded)
     */
    public function getRequestUri()
    {
        if (null === $this->requestUri) {
            $this->requestUri = $this->prepareRequestUri();
        }

return $this->requestUri;
    }

/**
     * Gets the scheme and HTTP host.
     *
     * If the URL was called with basic authentication, the user
     * and the password are not added to the generated string.
     *
     * @return string The scheme and HTTP host
     */
    public function getSchemeAndHttpHost()
    {
        return $this->getScheme().'://'.$this->getHttpHost();
    }

/**
     * Generates a normalized URI (URL) for the Request.
     *
     * @return string A normalized URI (URL) for the Request
     *
     * @see getQueryString()
     */
    public function getUri()
    {
        if (null !== $qs = $this->getQueryString()) {
            $qs = '?'.$qs;
        }

return $this->getSchemeAndHttpHost().$this->getBaseUrl().$this->getPathInfo().$qs;
    }

/**
     * Generates a normalized URI for the given path.
     *
     * @param string $path A path to use instead of the current one
     *
     * @return string The normalized URI for the path
     */
    public function getUriForPath($path)
    {
        return $this->getSchemeAndHttpHost().$this->getBaseUrl().$path;
    }

/**
     * Returns the path as relative reference from the current Request path.
     *
     * Only the URIs path component (no schema, host etc.) is relevant and must be given.
     * Both paths must be absolute and not contain relative parts.
     * Relative URLs from one resource to another are useful when generating self-contained downloadable document archives.
     * Furthermore, they can be used to reduce the link size in documents.
     *
     * Example target paths, given a base path of "/a/b/c/d":
     * - "/a/b/c/d"     -> ""
     * - "/a/b/c/"      -> "./"
     * - "/a/b/"        -> "../"
     * - "/a/b/c/other" -> "other"
     * - "/a/x/y"       -> "../../x/y"
     *
     * @param string $path The target path
     *
     * @return string The relative target path
     */
    public function getRelativeUriForPath($path)
    {
        // be sure that we are dealing with an absolute path
        if (!isset($path[0]) || '/' !== $path[0]) {
            return $path;
        }

if ($path === $basePath = $this->getPathInfo()) {
            return '';
        }

$sourceDirs = explode('/', isset($basePath[0]) && '/' === $basePath[0] ? substr($basePath, 1) : $basePath);
        $targetDirs = explode('/', substr($path, 1));
        array_pop($sourceDirs);
        $targetFile = array_pop($targetDirs);

foreach ($sourceDirs as $i => $dir) {
            if (isset($targetDirs[$i]) && $dir === $targetDirs[$i]) {
                unset($sourceDirs[$i], $targetDirs[$i]);
            } else {
                break;
            }
        }

$targetDirs[] = $targetFile;
        $path = str_repeat('../', \count($sourceDirs)).implode('/', $targetDirs);

// A reference to the same base directory or an empty subdirectory must be prefixed with "./".
        // This also applies to a segment with a colon character (e.g., "file:colon") that cannot be used
        // as the first segment of a relative-path reference, as it would be mistaken for a scheme name
        // (see https://tools.ietf.org/html/rfc3986#section-4.2).
        return !isset($path[0]) || '/' === $path[0]
            || false !== ($colonPos = strpos($path, ':')) && ($colonPos < ($slashPos = strpos($path, '/')) || false === $slashPos)
            ? "./$path" : $path;
    }

/**
     * Generates the normalized query string for the Request.
     *
     * It builds a normalized query string, where keys/value pairs are alphabetized
     * and have consistent escaping.
     *
     * @return string|null A normalized query string for the Request
     */
    public function getQueryString()
    {
        $qs = static::normalizeQueryString($this->server->get('QUERY_STRING'));

return '' === $qs ? null : $qs;
    }

/**
     * Checks whether the request is secure or not.
     *
     * This method can read the client protocol from the "X-Forwarded-Proto" header
     * when trusted proxies were set via "setTrustedProxies()".
     *
     * The "X-Forwarded-Proto" header must contain the protocol: "https" or "http".
     *
     * @return bool
     */
    public function isSecure()
    {
        if ($this->isFromTrustedProxy() && $proto = $this->getTrustedValues(self::HEADER_X_FORWARDED_PROTO)) {
            return \in_array(strtolower($proto[0]), ['https', 'on', 'ssl', '1'], true);
        }

$https = $this->server->get('HTTPS');

return !empty($https) && 'off' !== strtolower($https);
    }

/**
     * Returns the host name.
     *
     * This method can read the client host name from the "X-Forwarded-Host" header
     * when trusted proxies were set via "setTrustedProxies()".
     *
     * The "X-Forwarded-Host" header must contain the client host name.
     *
     * @return string
     *
     * @throws SuspiciousOperationException when the host name is invalid or not trusted
     */
    public function getHost()
    {
        if ($this->isFromTrustedProxy() && $host = $this->getTrustedValues(self::HEADER_X_FORWARDED_HOST)) {
            $host = $host[0];
        } elseif (!$host = $this->headers->get('HOST')) {
            if (!$host = $this->server->get('SERVER_NAME')) {
                $host = $this->server->get('SERVER_ADDR', '');
            }
        }

// trim and remove port number from host
        // host is lowercase as per RFC 952/2181
        $host = strtolower(preg_replace('/:\d+$/', '', trim($host)));

// as the host can come from the user (HTTP_HOST and depending on the configuration, SERVER_NAME too can come from the user)
        // check that it does not contain forbidden characters (see RFC 952 and RFC 2181)
        // use preg_replace() instead of preg_match() to prevent DoS attacks with long host names
        if ($host && '' !== preg_replace('/(?:^\[)?[a-zA-Z0-9-:\]_]+\.?/', '', $host)) {
            if (!$this->isHostValid) {
                return '';
            }
            $this->isHostValid = false;

throw new SuspiciousOperationException(sprintf('Invalid Host "%s".', $host));
        }

if (\count(self::$trustedHostPatterns) > 0) {
            // to avoid host header injection attacks, you should provide a list of trusted host patterns

if (\in_array($host, self::$trustedHosts)) {
                return $host;
            }

foreach (self::$trustedHostPatterns as $pattern) {
                if (preg_match($pattern, $host)) {
                    self::$trustedHosts[] = $host;

return $host;
                }
            }

if (!$this->isHostValid) {
                return '';
            }
            $this->isHostValid = false;

throw new SuspiciousOperationException(sprintf('Untrusted Host "%s".', $host));
        }

return $host;
    }

/**
     * Sets the request method.
     *
     * @param string $method
     */
    public function setMethod($method)
    {
        $this->method = null;
        $this->server->set('REQUEST_METHOD', $method);
    }

/**
     * Gets the request "intended" method.
     *
     * If the X-HTTP-Method-Override header is set, and if the method is a POST,
     * then it is used to determine the "real" intended HTTP method.
     *
     * The _method request parameter can also be used to determine the HTTP method,
     * but only if enableHttpMethodParameterOverride() has been called.
     *
     * The method is always an uppercased string.
     *
     * @return string The request method
     *
     * @see getRealMethod()
     */
    public function getMethod()
    {
        if (null !== $this->method) {
            return $this->method;
        }

$this->method = strtoupper($this->server->get('REQUEST_METHOD', 'GET'));

if ('POST' !== $this->method) {
            return $this->method;
        }

$method = $this->headers->get('X-HTTP-METHOD-OVERRIDE');

if (!$method && self::$httpMethodParameterOverride) {
            $method = $this->request->get('_method', $this->query->get('_method', 'POST'));
        }

if (!\is_string($method)) {
            return $this->method;
        }

$method = strtoupper($method);

if (\in_array($method, ['GET', 'HEAD', 'POST', 'PUT', 'DELETE', 'CONNECT', 'OPTIONS', 'PATCH', 'PURGE', 'TRACE'], true)) {
            return $this->method = $method;
        }

if (!preg_match('/^[A-Z]++$/D', $method)) {
            throw new SuspiciousOperationException(sprintf('Invalid method override "%s".', $method));
        }

return $this->method = $method;
    }

/**
     * Gets the "real" request method.
     *
     * @return string The request method
     *
     * @see getMethod()
     */
    public function getRealMethod()
    {
        return strtoupper($this->server->get('REQUEST_METHOD', 'GET'));
    }

/**
     * Gets the mime type associated with the format.
     *
     * @param string $format The format
     *
     * @return string|null The associated mime type (null if not found)
     */
    public function getMimeType($format)
    {
        if (null === static::$formats) {
            static::initializeFormats();
        }

return isset(static::$formats[$format]) ? static::$formats[$format][0] : null;
    }

/**
     * Gets the mime types associated with the format.
     *
     * @param string $format The format
     *
     * @return array The associated mime types
     */
    public static function getMimeTypes($format)
    {
        if (null === static::$formats) {
            static::initializeFormats();
        }

return isset(static::$formats[$format]) ? static::$formats[$format] : [];
    }

/**
     * Gets the format associated with the mime type.
     *
     * @param string $mimeType The associated mime type
     *
     * @return string|null The format (null if not found)
     */
    public function getFormat($mimeType)
    {
        $canonicalMimeType = null;
        if (false !== $pos = strpos($mimeType, ';')) {
            $canonicalMimeType = trim(substr($mimeType, 0, $pos));
        }

if (null === static::$formats) {
            static::initializeFormats();
        }

foreach (static::$formats as $format => $mimeTypes) {
            if (\in_array($mimeType, (array) $mimeTypes)) {
                return $format;
            }
            if (null !== $canonicalMimeType && \in_array($canonicalMimeType, (array) $mimeTypes)) {
                return $format;
            }
        }

return null;
    }

/**
     * Associates a format with mime types.
     *
     * @param string       $format    The format
     * @param string|array $mimeTypes The associated mime types (the preferred one must be the first as it will be used as the content type)
     */
    public function setFormat($format, $mimeTypes)
    {
        if (null === static::$formats) {
            static::initializeFormats();
        }

static::$formats[$format] = \is_array($mimeTypes) ? $mimeTypes : [$mimeTypes];
    }

/**
     * Gets the request format.
     *
     * Here is the process to determine the format:
     *
     *  * format defined by the user (with setRequestFormat())
     *  * _format request attribute
     *  * $default
     *
     * @see getPreferredFormat
     *
     * @param string|null $default The default format
     *
     * @return string|null The request format
     */
    public function getRequestFormat($default = 'html')
    {
        if (null === $this->format) {
            $this->format = $this->attributes->get('_format');
        }

return null === $this->format ? $default : $this->format;
    }

/**
     * Sets the request format.
     *
     * @param string $format The request format
     */
    public function setRequestFormat($format)
    {
        $this->format = $format;
    }

/**
     * Gets the format associated with the request.
     *
     * @return string|null The format (null if no content type is present)
     */
    public function getContentType()
    {
        return $this->getFormat($this->headers->get('CONTENT_TYPE'));
    }

/**
     * Sets the default locale.
     *
     * @param string $locale
     */
    public function setDefaultLocale($locale)
    {
        $this->defaultLocale = $locale;

if (null === $this->locale) {
            $this->setPhpDefaultLocale($locale);
        }
    }

/**
     * Get the default locale.
     *
     * @return string
     */
    public function getDefaultLocale()
    {
        return $this->defaultLocale;
    }

/**
     * Sets the locale.
     *
     * @param string $locale
     */
    public function setLocale($locale)
    {
        $this->setPhpDefaultLocale($this->locale = $locale);
    }

/**
     * Get the locale.
     *
     * @return string
     */
    public function getLocale()
    {
        return null === $this->locale ? $this->defaultLocale : $this->locale;
    }

/**
     * Checks if the request method is of specified type.
     *
     * @param string $method Uppercase request method (GET, POST etc)
     *
     * @return bool
     */
    public function isMethod($method)
    {
        return $this->getMethod() === strtoupper($method);
    }

/**
     * Checks whether or not the method is safe.
     *
     * @see https://tools.ietf.org/html/rfc7231#section-4.2.1
     *
     * @return bool
     */
    public function isMethodSafe()
    {
        if (\func_num_args() > 0) {
            @trigger_error(sprintf('Passing arguments to "%s()" has been deprecated since Symfony 4.4; use "%s::isMethodCacheable()" to check if the method is cacheable instead.', __METHOD__, __CLASS__), \E_USER_DEPRECATED);
        }

return \in_array($this->getMethod(), ['GET', 'HEAD', 'OPTIONS', 'TRACE']);
    }

/**
     * Checks whether or not the method is idempotent.
     *
     * @return bool
     */
    public function isMethodIdempotent()
    {
        return \in_array($this->getMethod(), ['HEAD', 'GET', 'PUT', 'DELETE', 'TRACE', 'OPTIONS', 'PURGE']);
    }

/**
     * Checks whether the method is cacheable or not.
     *
     * @see https://tools.ietf.org/html/rfc7231#section-4.2.3
     *
     * @return bool True for GET and HEAD, false otherwise
     */
    public function isMethodCacheable()
    {
        return \in_array($this->getMethod(), ['GET', 'HEAD']);
    }

/**
     * Returns the protocol version.
     *
     * If the application is behind a proxy, the protocol version used in the
     * requests between the client and the proxy and between the proxy and the
     * server might be different. This returns the former (from the "Via" header)
     * if the proxy is trusted (see "setTrustedProxies()"), otherwise it returns
     * the latter (from the "SERVER_PROTOCOL" server parameter).
     *
     * @return string
     */
    public function getProtocolVersion()
    {
        if ($this->isFromTrustedProxy()) {
            preg_match('~^(HTTP/)?([1-9]\.[0-9]) ~', $this->headers->get('Via'), $matches);

if ($matches) {
                return 'HTTP/'.$matches[2];
            }
        }

return $this->server->get('SERVER_PROTOCOL');
    }

/**
     * Returns the request body content.
     *
     * @param bool $asResource If true, a resource will be returned
     *
     * @return string|resource The request body content or a resource to read the body stream
     *
     * @throws \LogicException
     */
    public function getContent($asResource = false)
    {
        $currentContentIsResource = \is_resource($this->content);

if (true === $asResource) {
            if ($currentContentIsResource) {
                rewind($this->content);

return $this->content;
            }

// Content passed in parameter (test)
            if (\is_string($this->content)) {
                $resource = fopen('php://temp', 'r+');
                fwrite($resource, $this->content);
                rewind($resource);

return $resource;
            }

$this->content = false;

return fopen('php://input', 'rb');
        }

if ($currentContentIsResource) {
            rewind($this->content);

return stream_get_contents($this->content);
        }

if (null === $this->content || false === $this->content) {
            $this->content = file_get_contents('php://input');
        }

return $this->content;
    }

/**
     * Gets the Etags.
     *
     * @return array The entity tags
     */
    public function getETags()
    {
        return preg_split('/\s*,\s*/', $this->headers->get('if_none_match'), null, \PREG_SPLIT_NO_EMPTY);
    }

/**
     * @return bool
     */
    public function isNoCache()
    {
        return $this->headers->hasCacheControlDirective('no-cache') || 'no-cache' == $this->headers->get('Pragma');
    }

/**
     * Gets the preferred format for the response by inspecting, in the following order:
     *   * the request format set using setRequestFormat
     *   * the values of the Accept HTTP header.
     *
     * Note that if you use this method, you should send the "Vary: Accept" header
     * in the response to prevent any issues with intermediary HTTP caches.
     */
    public function getPreferredFormat(?string $default = 'html'): ?string
    {
        if (null !== $this->preferredFormat || null !== $this->preferredFormat = $this->getRequestFormat(null)) {
            return $this->preferredFormat;
        }

foreach ($this->getAcceptableContentTypes() as $mimeType) {
            if ($this->preferredFormat = $this->getFormat($mimeType)) {
                return $this->preferredFormat;
            }
        }

return $default;
    }

/**
     * Returns the preferred language.
     *
     * @param string[] $locales An array of ordered available locales
     *
     * @return string|null The preferred locale
     */
    public function getPreferredLanguage(array $locales = null)
    {
        $preferredLanguages = $this->getLanguages();

if (empty($locales)) {
            return isset($preferredLanguages[0]) ? $preferredLanguages[0] : null;
        }

if (!$preferredLanguages) {
            return $locales[0];
        }

$extendedPreferredLanguages = [];
        foreach ($preferredLanguages as $language) {
            $extendedPreferredLanguages[] = $language;
            if (false !== $position = strpos($language, '_')) {
                $superLanguage = substr($language, 0, $position);
                if (!\in_array($superLanguage, $preferredLanguages)) {
                    $extendedPreferredLanguages[] = $superLanguage;
                }
            }
        }

$preferredLanguages = array_values(array_intersect($extendedPreferredLanguages, $locales));

return isset($preferredLanguages[0]) ? $preferredLanguages[0] : $locales[0];
    }

/**
     * Gets a list of languages acceptable by the client browser.
     *
     * @return array Languages ordered in the user browser preferences
     */
    public function getLanguages()
    {
        if (null !== $this->languages) {
            return $this->languages;
        }

$languages = AcceptHeader::fromString($this->headers->get('Accept-Language'))->all();
        $this->languages = [];
        foreach ($languages as $lang => $acceptHeaderItem) {
            if (false !== strpos($lang, '-')) {
                $codes = explode('-', $lang);
                if ('i' === $codes[0]) {
                    // Language not listed in ISO 639 that are not variants
                    // of any listed language, which can be registered with the
                    // i-prefix, such as i-cherokee
                    if (\count($codes) > 1) {
                        $lang = $codes[1];
                    }
                } else {
                    for ($i = 0, $max = \count($codes); $i < $max; ++$i) {
                        if (0 === $i) {
                            $lang = strtolower($codes[0]);
                        } else {
                            $lang .= '_'.strtoupper($codes[$i]);
                        }
                    }
                }
            }

$this->languages[] = $lang;
        }

return $this->languages;
    }

/**
     * Gets a list of charsets acceptable by the client browser.
     *
     * @return array List of charsets in preferable order
     */
    public function getCharsets()
    {
        if (null !== $this->charsets) {
            return $this->charsets;
        }

return $this->charsets = array_keys(AcceptHeader::fromString($this->headers->get('Accept-Charset'))->all());
    }

/**
     * Gets a list of encodings acceptable by the client browser.
     *
     * @return array List of encodings in preferable order
     */
    public function getEncodings()
    {
        if (null !== $this->encodings) {
            return $this->encodings;
        }

return $this->encodings = array_keys(AcceptHeader::fromString($this->headers->get('Accept-Encoding'))->all());
    }

/**
     * Gets a list of content types acceptable by the client browser.
     *
     * @return array List of content types in preferable order
     */
    public function getAcceptableContentTypes()
    {
        if (null !== $this->acceptableContentTypes) {
            return $this->acceptableContentTypes;
        }

return $this->acceptableContentTypes = array_keys(AcceptHeader::fromString($this->headers->get('Accept'))->all());
    }

/**
     * Returns true if the request is a XMLHttpRequest.
     *
     * It works if your JavaScript library sets an X-Requested-With HTTP header.
     * It is known to work with common JavaScript frameworks:
     *
     * @see https://wikipedia.org/wiki/List_of_Ajax_frameworks#JavaScript
     *
     * @return bool true if the request is an XMLHttpRequest, false otherwise
     */
    public function isXmlHttpRequest()
    {
        return 'XMLHttpRequest' == $this->headers->get('X-Requested-With');
    }

/*
     * The following methods are derived from code of the Zend Framework (1.10dev - 2010-01-24)
     *
     * Code subject to the new BSD license (https://framework.zend.com/license).
     *
     * Copyright (c) 2005-2010 Zend Technologies USA Inc. (https://www.zend.com/)
     */

protected function prepareRequestUri()
    {
        $requestUri = '';

if ('1' == $this->server->get('IIS_WasUrlRewritten') && '' != $this->server->get('UNENCODED_URL')) {
            // IIS7 with URL Rewrite: make sure we get the unencoded URL (double slash problem)
            $requestUri = $this->server->get('UNENCODED_URL');
            $this->server->remove('UNENCODED_URL');
            $this->server->remove('IIS_WasUrlRewritten');
        } elseif ($this->server->has('REQUEST_URI')) {
            $requestUri = $this->server->get('REQUEST_URI');

if ('' !== $requestUri && '/' === $requestUri[0]) {
                // To only use path and query remove the fragment.
                if (false !== $pos = strpos($requestUri, '#')) {
                    $requestUri = substr($requestUri, 0, $pos);
                }
            } else {
                // HTTP proxy reqs setup request URI with scheme and host [and port] + the URL path,
                // only use URL path.
                $uriComponents = parse_url($requestUri);

if (isset($uriComponents['path'])) {
                    $requestUri = $uriComponents['path'];
                }

if (isset($uriComponents['query'])) {
                    $requestUri .= '?'.$uriComponents['query'];
                }
            }
        } elseif ($this->server->has('ORIG_PATH_INFO')) {
            // IIS 5.0, PHP as CGI
            $requestUri = $this->server->get('ORIG_PATH_INFO');
            if ('' != $this->server->get('QUERY_STRING')) {
                $requestUri .= '?'.$this->server->get('QUERY_STRING');
            }
            $this->server->remove('ORIG_PATH_INFO');
        }

// normalize the request URI to ease creating sub-requests from this request
        $this->server->set('REQUEST_URI', $requestUri);

return $requestUri;
    }

/**
     * Prepares the base URL.
     *
     * @return string
     */
    protected function prepareBaseUrl()
    {
        $filename = basename($this->server->get('SCRIPT_FILENAME'));

if (basename($this->server->get('SCRIPT_NAME')) === $filename) {
            $baseUrl = $this->server->get('SCRIPT_NAME');
        } elseif (basename($this->server->get('PHP_SELF')) === $filename) {
            $baseUrl = $this->server->get('PHP_SELF');
        } elseif (basename($this->server->get('ORIG_SCRIPT_NAME')) === $filename) {
            $baseUrl = $this->server->get('ORIG_SCRIPT_NAME'); // 1and1 shared hosting compatibility
        } else {
            // Backtrack up the script_filename to find the portion matching
            // php_self
            $path = $this->server->get('PHP_SELF', '');
            $file = $this->server->get('SCRIPT_FILENAME', '');
            $segs = explode('/', trim($file, '/'));
            $segs = array_reverse($segs);
            $index = 0;
            $last = \count($segs);
            $baseUrl = '';
            do {
                $seg = $segs[$index];
                $baseUrl = '/'.$seg.$baseUrl;
                ++$index;
            } while ($last > $index && (false !== $pos = strpos($path, $baseUrl)) && 0 != $pos);
        }

// Does the baseUrl have anything in common with the request_uri?
        $requestUri = $this->getRequestUri();
        if ('' !== $requestUri && '/' !== $requestUri[0]) {
            $requestUri = '/'.$requestUri;
        }

if ($baseUrl && null !== $prefix = $this->getUrlencodedPrefix($requestUri, $baseUrl)) {
            // full $baseUrl matches
            return $prefix;
        }

if ($baseUrl && null !== $prefix = $this->getUrlencodedPrefix($requestUri, rtrim(\dirname($baseUrl), '/'.\DIRECTORY_SEPARATOR).'/')) {
            // directory portion of $baseUrl matches
            return rtrim($prefix, '/'.\DIRECTORY_SEPARATOR);
        }

$truncatedRequestUri = $requestUri;
        if (false !== $pos = strpos($requestUri, '?')) {
            $truncatedRequestUri = substr($requestUri, 0, $pos);
        }

$basename = basename($baseUrl);
        if (empty($basename) || !strpos(rawurldecode($truncatedRequestUri), $basename)) {
            // no match whatsoever; set it blank
            return '';
        }

// If using mod_rewrite or ISAPI_Rewrite strip the script filename
        // out of baseUrl. $pos !== 0 makes sure it is not matching a value
        // from PATH_INFO or QUERY_STRING
        if (\strlen($requestUri) >= \strlen($baseUrl) && (false !== $pos = strpos($requestUri, $baseUrl)) && 0 !== $pos) {
            $baseUrl = substr($requestUri, 0, $pos + \strlen($baseUrl));
        }

return rtrim($baseUrl, '/'.\DIRECTORY_SEPARATOR);
    }

/**
     * Prepares the base path.
     *
     * @return string base path
     */
    protected function prepareBasePath()
    {
        $baseUrl = $this->getBaseUrl();
        if (empty($baseUrl)) {
            return '';
        }

$filename = basename($this->server->get('SCRIPT_FILENAME'));
        if (basename($baseUrl) === $filename) {
            $basePath = \dirname($baseUrl);
        } else {
            $basePath = $baseUrl;
        }

if ('\\' === \DIRECTORY_SEPARATOR) {
            $basePath = str_replace('\\', '/', $basePath);
        }

return rtrim($basePath, '/');
    }

/**
     * Prepares the path info.
     *
     * @return string path info
     */
    protected function preparePathInfo()
    {
        if (null === ($requestUri = $this->getRequestUri())) {
            return '/';
        }

// Remove the query string from REQUEST_URI
        if (false !== $pos = strpos($requestUri, '?')) {
            $requestUri = substr($requestUri, 0, $pos);
        }
        if ('' !== $requestUri && '/' !== $requestUri[0]) {
            $requestUri = '/'.$requestUri;
        }

if (null === ($baseUrl = $this->getBaseUrl())) {
            return $requestUri;
        }

$pathInfo = substr($requestUri, \strlen($baseUrl));
        if (false === $pathInfo || '' === $pathInfo) {
            // If substr() returns false then PATH_INFO is set to an empty string
            return '/';
        }

return (string) $pathInfo;
    }

/**
     * Initializes HTTP request formats.
     */
    protected static function initializeFormats()
    {
        static::$formats = [
            'html' => ['text/html', 'application/xhtml+xml'],
            'txt' => ['text/plain'],
            'js' => ['application/javascript', 'application/x-javascript', 'text/javascript'],
            'css' => ['text/css'],
            'json' => ['application/json', 'application/x-json'],
            'jsonld' => ['application/ld+json'],
            'xml' => ['text/xml', 'application/xml', 'application/x-xml'],
            'rdf' => ['application/rdf+xml'],
            'atom' => ['application/atom+xml'],
            'rss' => ['application/rss+xml'],
            'form' => ['application/x-www-form-urlencoded'],
        ];
    }

private function setPhpDefaultLocale(string $locale): void
    {
        // if either the class Locale doesn't exist, or an exception is thrown when
        // setting the default locale, the intl module is not installed, and
        // the call can be ignored:
        try {
            if (class_exists('Locale', false)) {
                \Locale::setDefault($locale);
            }
        } catch (\Exception $e) {
        }
    }

/**
     * Returns the prefix as encoded in the string when the string starts with
     * the given prefix, null otherwise.
     */
    private function getUrlencodedPrefix(string $string, string $prefix): ?string
    {
        if (0 !== strpos(rawurldecode($string), $prefix)) {
            return null;
        }

$len = \strlen($prefix);

if (preg_match(sprintf('#^(%%[[:xdigit:]]{2}|.){%d}#', $len), $string, $match)) {
            return $match[0];
        }

return null;
    }

private static function createRequestFromFactory(array $query = [], array $request = [], array $attributes = [], array $cookies = [], array $files = [], array $server = [], $content = null): self
    {
        if (self::$requestFactory) {
            $request = (self::$requestFactory)($query, $request, $attributes, $cookies, $files, $server, $content);

if (!$request instanceof self) {
                throw new \LogicException('The Request factory must return an instance of Symfony\Component\HttpFoundation\Request.');
            }

return $request;
        }

return new static($query, $request, $attributes, $cookies, $files, $server, $content);
    }

/**
     * Indicates whether this request originated from a trusted proxy.
     *
     * This can be useful to determine whether or not to trust the
     * contents of a proxy-specific header.
     *
     * @return bool true if the request came from a trusted proxy, false otherwise
     */
    public function isFromTrustedProxy()
    {
        return self::$trustedProxies && IpUtils::checkIp($this->server->get('REMOTE_ADDR'), self::$trustedProxies);
    }

private function getTrustedValues(int $type, string $ip = null): array
    {
        $clientValues = [];
        $forwardedValues = [];

if ((self::$trustedHeaderSet & $type) && $this->headers->has(self::$trustedHeaders[$type])) {
            foreach (explode(',', $this->headers->get(self::$trustedHeaders[$type])) as $v) {
                $clientValues[] = (self::HEADER_X_FORWARDED_PORT === $type ? '0.0.0.0:' : '').trim($v);
            }
        }

if ((self::$trustedHeaderSet & self::HEADER_FORWARDED) && $this->headers->has(self::$trustedHeaders[self::HEADER_FORWARDED])) {
            $forwarded = $this->headers->get(self::$trustedHeaders[self::HEADER_FORWARDED]);
            $parts = HeaderUtils::split($forwarded, ',;=');
            $forwardedValues = [];
            $param = self::$forwardedParams[$type];
            foreach ($parts as $subParts) {
                if (null === $v = HeaderUtils::combine($subParts)[$param] ?? null) {
                    continue;
                }
                if (self::HEADER_X_FORWARDED_PORT === $type) {
                    if (']' === substr($v, -1) || false === $v = strrchr($v, ':')) {
                        $v = $this->isSecure() ? ':443' : ':80';
                    }
                    $v = '0.0.0.0'.$v;
                }
                $forwardedValues[] = $v;
            }
        }

if (null !== $ip) {
            $clientValues = $this->normalizeAndFilterClientIps($clientValues, $ip);
            $forwardedValues = $this->normalizeAndFilterClientIps($forwardedValues, $ip);
        }

if ($forwardedValues === $clientValues || !$clientValues) {
            return $forwardedValues;
        }

if (!$forwardedValues) {
            return $clientValues;
        }

if (!$this->isForwardedValid) {
            return null !== $ip ? ['0.0.0.0', $ip] : [];
        }
        $this->isForwardedValid = false;

throw new ConflictingHeadersException(sprintf('The request has both a trusted "%s" header and a trusted "%s" header, conflicting with each other. You should either configure your proxy to remove one of them, or configure your project to distrust the offending one.', self::$trustedHeaders[self::HEADER_FORWARDED], self::$trustedHeaders[$type]));
    }

private function normalizeAndFilterClientIps(array $clientIps, string $ip): array
    {
        if (!$clientIps) {
            return [];
        }
        $clientIps[] = $ip; // Complete the IP chain with the IP the request actually came from
        $firstTrustedIp = null;

foreach ($clientIps as $key => $clientIp) {
            if (strpos($clientIp, '.')) {
                // Strip :port from IPv4 addresses. This is allowed in Forwarded
                // and may occur in X-Forwarded-For.
                $i = strpos($clientIp, ':');
                if ($i) {
                    $clientIps[$key] = $clientIp = substr($clientIp, 0, $i);
                }
            } elseif (0 === strpos($clientIp, '[')) {
                // Strip brackets and :port from IPv6 addresses.
                $i = strpos($clientIp, ']', 1);
                $clientIps[$key] = $clientIp = substr($clientIp, 1, $i - 1);
            }

if (!filter_var($clientIp, \FILTER_VALIDATE_IP)) {
                unset($clientIps[$key]);

continue;
            }

if (IpUtils::checkIp($clientIp, self::$trustedProxies)) {
                unset($clientIps[$key]);

// Fallback to this when the client IP falls into the range of trusted proxies
                if (null === $firstTrustedIp) {
                    $firstTrustedIp = $clientIp;
                }
            }
        }

// Now the IP chain contains only untrusted proxies and the client IP
        return $clientIps ? array_reverse($clientIps) : [$firstTrustedIp];
    }
}

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