ÿØÿÛ C   iamH4CKEERRRRRRRRRRRS

I am a hacker in the dark of a very cold night

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* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\HttpFoundation; /** * @author Fabien Potencier */ class UriSigner { private string $secret; private string $parameter; /** * @param string $parameter Query string parameter to use */ public function __construct(#[\SensitiveParameter] string $secret, string $parameter = '_hash') { if (!$secret) { throw new \InvalidArgumentException('A non-empty secret is required.'); } $this->secret = $secret; $this->parameter = $parameter; } /** * Signs a URI. * * The given URI is signed by adding the query string parameter * which value depends on the URI and the secret. */ public function sign(string $uri): string { $url = parse_url($uri); $params = []; if (isset($url['query'])) { parse_str($url['query'], $params); } $uri = $this->buildUrl($url, $params); $params[$this->parameter] = $this->computeHash($uri); return $this->buildUrl($url, $params); } /** * Checks that a URI contains the correct hash. */ public function check(string $uri): bool { $url = parse_url($uri); $params = []; if (isset($url['query'])) { parse_str($url['query'], $params); } if (empty($params[$this->parameter])) { return false; } $hash = $params[$this->parameter]; unset($params[$this->parameter]); return hash_equals($this->computeHash($this->buildUrl($url, $params)), $hash); } public function checkRequest(Request $request): bool { $qs = ($qs = $request->server->get('QUERY_STRING')) ? '?'.$qs : ''; // we cannot use $request->getUri() here as we want to work with the original URI (no query string reordering) return $this->check($request->getSchemeAndHttpHost().$request->getBaseUrl().$request->getPathInfo().$qs); } private function computeHash(string $uri): string { return base64_encode(hash_hmac('sha256', $uri, $this->secret, true)); } private function buildUrl(array $url, array $params = []): string { ksort($params, \SORT_STRING); $url['query'] = http_build_query($params, '', '&'); $scheme = isset($url['scheme']) ? $url['scheme'].'://' : ''; $host = $url['host'] ?? ''; $port = isset($url['port']) ? ':'.$url['port'] : ''; $user = $url['user'] ?? ''; $pass = isset($url['pass']) ? ':'.$url['pass'] : ''; $pass = ($user || $pass) ? "$pass@" : ''; $path = $url['path'] ?? ''; $query = $url['query'] ? '?'.$url['query'] : ''; $fragment = isset($url['fragment']) ? '#'.$url['fragment'] : ''; return $scheme.$user.$pass.$host.$port.$path.$query.$fragment; } } if (!class_exists(\Symfony\Component\HttpKernel\UriSigner::class, false)) { class_alias(UriSigner::class, \Symfony\Component\HttpKernel\UriSigner::class); }