vendor/symfony/symfony/src/Symfony/Component/Security/Http/Firewall/AnonymousAuthenticationListener.php line 27

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  1. <?php
  3. /*
  4.  * This file is part of the Symfony package.
  5.  *
  6.  * (c) Fabien Potencier <fabien@symfony.com>
  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\Firewall;
  14. use Psr\Log\LoggerInterface;
  15. use Symfony\Component\HttpKernel\Event\GetResponseEvent;
  16. use Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface;
  17. use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
  18. use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
  19. use Symfony\Component\Security\Core\Exception\AuthenticationException;
  21. /**
  22.  * AnonymousAuthenticationListener automatically adds a Token if none is
  23.  * already present.
  24.  *
  25.  * @author Fabien Potencier <fabien@symfony.com>
  26.  */
  27. class AnonymousAuthenticationListener implements ListenerInterface
  28. {
  29.     private $tokenStorage;
  30.     private $secret;
  31.     private $authenticationManager;
  32.     private $logger;
  34.     public function __construct(TokenStorageInterface $tokenStorage, $secret, LoggerInterface $logger = null, AuthenticationManagerInterface $authenticationManager = null)
  35.     {
  36.         $this->tokenStorage = $tokenStorage;
  37.         $this->secret = $secret;
  38.         $this->authenticationManager = $authenticationManager;
  39.         $this->logger = $logger;
  40.     }
  42.     /**
  43.      * Handles anonymous authentication.
  44.      */
  45.     public function handle(GetResponseEvent $event)
  46.     {
  47.         if (null !== $this->tokenStorage->getToken()) {
  48.             return;
  49.         }
  51.         try {
  52.             $token = new AnonymousToken($this->secret, 'anon.', array());
  53.             if (null !== $this->authenticationManager) {
  54.                 $token = $this->authenticationManager->authenticate($token);
  55.             }
  57.             $this->tokenStorage->setToken($token);
  59.             if (null !== $this->logger) {
  60.                 $this->logger->info('Populated the TokenStorage with an anonymous Token.');
  61.             }
  62.         } catch (AuthenticationException $failed) {
  63.             if (null !== $this->logger) {
  64.                 $this->logger->info('Anonymous authentication failed.', array('exception' => $failed));
  65.             }
  66.         }
  67.     }
  68. }