vendor/symfony/security-http/EventListener/CsrfProtectionListener.php line 35

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  1. <?php
  3. /*
  4.  * This file is part of the Symfony package.
  5.  *
  6.  * (c) Fabien Potencier <[email protected]>
  7.  *
  8.  * For the full copyright and license information, please view the LICENSE
  9.  * file that was distributed with this source code.
  10.  */
  12. namespace Symfony\Component\Security\Http\EventListener;
  14. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  15. use Symfony\Component\Security\Core\Exception\InvalidCsrfTokenException;
  16. use Symfony\Component\Security\Csrf\CsrfToken;
  17. use Symfony\Component\Security\Csrf\CsrfTokenManagerInterface;
  18. use Symfony\Component\Security\Http\Authenticator\Passport\Badge\CsrfTokenBadge;
  19. use Symfony\Component\Security\Http\Event\CheckPassportEvent;
  21. /**
  22.  * @author Wouter de Jong <[email protected]>
  23.  *
  24.  * @final
  25.  */
  26. class CsrfProtectionListener implements EventSubscriberInterface
  27. {
  28.     private CsrfTokenManagerInterface $csrfTokenManager;
  30.     public function __construct(CsrfTokenManagerInterface $csrfTokenManager)
  31.     {
  32.         $this->csrfTokenManager = $csrfTokenManager;
  33.     }
  35.     public function checkPassport(CheckPassportEvent $event): void
  36.     {
  37.         $passport = $event->getPassport();
  38.         if (!$passport->hasBadge(CsrfTokenBadge::class)) {
  39.             return;
  40.         }
  42.         /** @var CsrfTokenBadge $badge */
  43.         $badge = $passport->getBadge(CsrfTokenBadge::class);
  44.         if ($badge->isResolved()) {
  45.             return;
  46.         }
  48.         $csrfToken = new CsrfToken($badge->getCsrfTokenId(), $badge->getCsrfToken());
  50.         if (false === $this->csrfTokenManager->isTokenValid($csrfToken)) {
  51.             throw new InvalidCsrfTokenException('Invalid CSRF token.');
  52.         }
  54.         $badge->markResolved();
  55.     }
  57.     public static function getSubscribedEvents(): array
  58.     {
  59.         return [CheckPassportEvent::class => ['checkPassport', 512]];
  60.     }
  61. }