src/EventSubscriber/KernelRequestSubscriber.php line 37

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  1. <?php
  3. declare(strict_types=1);
  5. namespace App\EventSubscriber;
  7. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  8. use Symfony\Component\HttpFoundation\RequestStack;
  9. use Symfony\Component\HttpFoundation\Response;
  10. use Symfony\Component\HttpKernel\Event\RequestEvent;
  11. use Symfony\Component\HttpKernel\KernelEvents;
  12. use Twig\Environment as TwigEnvironment;
  14. class KernelRequestSubscriber implements EventSubscriberInterface
  15. {
  16.     private TwigEnvironment $twig;
  17.     protected $requestStack;
  19.     public function __construct(TwigEnvironment $twig, RequestStack $requestStack)
  20.     {
  21.         $this->twig = $twig;
  22.         $this->requestStack = $requestStack;
  23.     }
  25.     /**
  26.      * {@inheritdoc}
  27.      */
  28.     public static function getSubscribedEvents(): array
  29.     {
  30.         return [
  31.             KernelEvents::REQUEST => [
  32.                 ['onMaintenance', \PHP_INT_MAX - 1000],
  33.             ],
  34.         ];
  35.     }
  37.     public function onMaintenance(RequestEvent $event): void
  38.     {
  39.         /** @var bool $isMaintenance */
  40.         $isMaintenance = \filter_var($_ENV['MAINTENANCE_MODE'] ?? '0', \FILTER_VALIDATE_BOOLEAN);
  41.         $isCli = \PHP_SAPI === 'cli';
  42.         $ip = $this->requestStack->getCurrentRequest()->getClientIp();
  44.         if ($ip !== $_ENV['MAINTENANCE_AUTHORIZED_IP']) {
  45.             if ($isMaintenance && !$isCli) {
  46.                 $event->setResponse(new Response(
  47.                     $this->twig->render('maintenance/maintenance.html.twig'),
  48.                     Response::HTTP_SERVICE_UNAVAILABLE,
  49.                 ));
  50.                 $event->stopPropagation();
  51.             }
  52.         }
  53.     }
  54. }