vendor/contao/core-bundle/src/EventListener/PreviewAuthenticationListener.php line 55

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  1. <?php
  3. declare(strict_types=1);
  5. /*
  6.  * This file is part of Contao.
  7.  *
  8.  * (c) Leo Feyer
  9.  *
  10.  * @license LGPL-3.0-or-later
  11.  */
  13. namespace Contao\CoreBundle\EventListener;
  15. use Contao\CoreBundle\Routing\ScopeMatcher;
  16. use Contao\CoreBundle\Security\Authentication\Token\TokenChecker;
  17. use Symfony\Component\HttpFoundation\RedirectResponse;
  18. use Symfony\Component\HttpKernel\Event\RequestEvent;
  19. use Symfony\Component\HttpKernel\UriSigner;
  20. use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
  22. /**
  23.  * @internal
  24.  */
  25. class PreviewAuthenticationListener
  26. {
  27.     /**
  28.      * @var ScopeMatcher
  29.      */
  30.     private $scopeMatcher;
  32.     /**
  33.      * @var TokenChecker
  34.      */
  35.     private $tokenChecker;
  37.     /**
  38.      * @var UrlGeneratorInterface
  39.      */
  40.     private $router;
  42.     /**
  43.      * @var UriSigner
  44.      */
  45.     private $uriSigner;
  47.     public function __construct(ScopeMatcher $scopeMatcher, TokenChecker $tokenChecker, UrlGeneratorInterface $router, UriSigner $uriSigner)
  48.     {
  49.         $this->scopeMatcher = $scopeMatcher;
  50.         $this->tokenChecker = $tokenChecker;
  51.         $this->router = $router;
  52.         $this->uriSigner = $uriSigner;
  53.     }
  55.     public function __invoke(RequestEvent $event): void
  56.     {
  57.         $request = $event->getRequest();
  59.         if (
  60.             !$request->attributes->get('_preview', false)
  61.             || $this->scopeMatcher->isBackendRequest($request)
  62.             || $this->tokenChecker->hasBackendUser()
  63.         ) {
  64.             return;
  65.         }
  67.         $context = $this->router->getContext();
  68.         $baseUrl = $context->getBaseUrl();
  70.         $context->setBaseUrl('');
  72.         $url = $this->router->generate(
  73.             'contao_backend_login',
  74.             ['redirect' => $request->getUri()],
  75.             UrlGeneratorInterface::ABSOLUTE_URL
  76.         );
  78.         $context->setBaseUrl($baseUrl);
  80.         $event->setResponse(new RedirectResponse($this->uriSigner->sign($url)));
  81.     }
  82. }