vendor/nelmio/security-bundle/EventListener/ReferrerPolicyListener.php line 36

Open in your IDE?
  1. <?php
  3. /*
  4. * This file is part of the Nelmio SecurityBundle.
  5. *
  6. * (c) Nelmio <hello@nelm.io>
  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 Nelmio\SecurityBundle\EventListener;
  14. use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
  15. use Symfony\Component\HttpKernel\Event\ResponseEvent;
  16. use Symfony\Component\HttpKernel\HttpKernelInterface;
  18. /**
  19. * Referrer Policy Listener.
  20. *
  21. * @author Andrej Hudec <pulzarraider@gmail.com>
  22. * @final
  23. */
  24. class ReferrerPolicyListener
  25. {
  26. private $policies;
  28. public function __construct(array $policies)
  29. {
  30. $this->policies = $policies;
  31. }
  33. /**
  34. * @param FilterResponseEvent|ResponseEvent $e
  35. */
  36. public function onKernelResponse($e)
  37. {
  38. // Compatibility with Symfony < 5 and Symfony >=5
  39. if (!$e instanceof FilterResponseEvent && !$e instanceof ResponseEvent) {
  40. throw new \InvalidArgumentException(\sprintf('Expected instance of type %s, %s given', \class_exists(ResponseEvent::class) ? ResponseEvent::class : FilterResponseEvent::class, \is_object($e) ? \get_class($e) : \gettype($e)));
  41. }
  43. if (HttpKernelInterface::MASTER_REQUEST !== $e->getRequestType()) {
  44. return;
  45. }
  47. $response = $e->getResponse();
  49. $response->headers->set('Referrer-Policy', implode(', ', $this->policies));
  50. }
  51. }