vendor/symfony/security-csrf/TokenStorage/SessionTokenStorage.php line 76
<?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\Security\Csrf\TokenStorage;use Symfony\Component\HttpFoundation\Exception\SessionNotFoundException;use Symfony\Component\HttpFoundation\RequestStack;use Symfony\Component\HttpFoundation\Session\SessionInterface;use Symfony\Component\Security\Csrf\Exception\TokenNotFoundException;/*** Token storage that uses a Symfony Session object.** @author Bernhard Schussek <bschussek@gmail.com>*/class SessionTokenStorage implements ClearableTokenStorageInterface{/*** The namespace used to store values in the session.*/public const SESSION_NAMESPACE = '_csrf';private RequestStack $requestStack;private string $namespace;/*** Initializes the storage with a RequestStack object and a session namespace.** @param string $namespace The namespace under which the token is stored in the requestStack*/public function __construct(RequestStack $requestStack, string $namespace = self::SESSION_NAMESPACE){$this->requestStack = $requestStack;$this->namespace = $namespace;}public function getToken(string $tokenId): string{$session = $this->getSession();if (!$session->isStarted()) {$session->start();}if (!$session->has($this->namespace.'/'.$tokenId)) {throw new TokenNotFoundException('The CSRF token with ID '.$tokenId.' does not exist.');}return (string) $session->get($this->namespace.'/'.$tokenId);}public function setToken(string $tokenId, #[\SensitiveParameter] string $token){$session = $this->getSession();if (!$session->isStarted()) {$session->start();}$session->set($this->namespace.'/'.$tokenId, $token);}public function hasToken(string $tokenId): bool{$session = $this->getSession();if (!$session->isStarted()) {$session->start();}return $session->has($this->namespace.'/'.$tokenId);}public function removeToken(string $tokenId): ?string{$session = $this->getSession();if (!$session->isStarted()) {$session->start();}return $session->remove($this->namespace.'/'.$tokenId);}public function clear(){$session = $this->getSession();foreach (array_keys($session->all()) as $key) {if (str_starts_with($key, $this->namespace.'/')) {$session->remove($key);}}}/*** @throws SessionNotFoundException*/private function getSession(): SessionInterface{return $this->requestStack->getSession();}}