Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\user\EventSubscriber;
Chris@0: 
Chris@0: use Drupal\Core\Routing\RouteMatch;
Chris@0: use Drupal\Core\Session\AccountInterface;
Chris@0: use Drupal\Core\Site\MaintenanceModeInterface;
Chris@18: use Drupal\Core\Url;
Chris@0: use Symfony\Component\EventDispatcher\EventSubscriberInterface;
Chris@18: use Symfony\Component\HttpFoundation\RedirectResponse;
Chris@0: use Symfony\Component\HttpKernel\Event\GetResponseEvent;
Chris@0: use Symfony\Component\HttpKernel\KernelEvents;
Chris@0: 
Chris@0: /**
Chris@0:  * Maintenance mode subscriber to log out users.
Chris@0:  */
Chris@0: class MaintenanceModeSubscriber implements EventSubscriberInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The maintenance mode.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Site\MaintenanceMode
Chris@0:    */
Chris@0:   protected $maintenanceMode;
Chris@0: 
Chris@0:   /**
Chris@0:    * The current account.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Session\AccountInterface
Chris@0:    */
Chris@0:   protected $account;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new MaintenanceModeSubscriber.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Site\MaintenanceModeInterface $maintenance_mode
Chris@0:    *   The maintenance mode.
Chris@0:    * @param \Drupal\Core\Session\AccountInterface $account
Chris@0:    *   The current user.
Chris@0:    */
Chris@0:   public function __construct(MaintenanceModeInterface $maintenance_mode, AccountInterface $account) {
Chris@0:     $this->maintenanceMode = $maintenance_mode;
Chris@0:     $this->account = $account;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Logout users if site is in maintenance mode.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
Chris@0:    *   The event to process.
Chris@0:    */
Chris@0:   public function onKernelRequestMaintenance(GetResponseEvent $event) {
Chris@0:     $request = $event->getRequest();
Chris@0:     $route_match = RouteMatch::createFromRequest($request);
Chris@0:     if ($this->maintenanceMode->applies($route_match)) {
Chris@0:       // If the site is offline, log out unprivileged users.
Chris@0:       if ($this->account->isAuthenticated() && !$this->maintenanceMode->exempt($this->account)) {
Chris@0:         user_logout();
Chris@0:         // Redirect to homepage.
Chris@18:         $event->setResponse(
Chris@18:           new RedirectResponse(Url::fromRoute('<front>')->toString())
Chris@18:         );
Chris@0:       }
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function getSubscribedEvents() {
Chris@0:     $events[KernelEvents::REQUEST][] = ['onKernelRequestMaintenance', 31];
Chris@0:     return $events;
Chris@0:   }
Chris@0: 
Chris@0: }