src/AppBundle/EventListener/ReCaptchaValidationListener.php line 17

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  1. <?php
  3. namespace AppBundle\EventListener;
  5. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  6. use Symfony\Component\Form\FormEvents;
  7. use Symfony\Component\HttpFoundation\RedirectResponse;
  8. use Symfony\Component\HttpKernel\Event\GetResponseEvent;
  9. use Symfony\Component\HttpKernel\KernelEvents;
  11. class ReCaptchaValidationListener implements EventSubscriberInterface
  12. {
  14.     /**
  15.      * @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
  16.      */
  17.     public function onKernelRequest(GetResponseEvent $event)
  18.     {
  19.         if ('login_check' !== $event->getRequest()->getPathInfo()) {
  20.             return;
  21.         }
  23.         $token = $event->getRequest()->request->get('g-recaptcha-response');
  24.         if($token){
  25.             $ch = curl_init();
  27.             curl_setopt($ch, CURLOPT_URL,"https://www.google.com/recaptcha/api/siteverify");
  28.             curl_setopt($ch, CURLOPT_POST, 1);
  29.             curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
  30.                 "secret" => "6LdbupIiAAAAAGST-LJkJyGyU5lXbow0r3si9i2W",
  31.                 "response" => $token
  32.             ]));
  34.             curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  36.             $server_output = json_decode(curl_exec($ch));
  38.             curl_close($ch);
  39.             if ($server_output->success) {
  40.                 return;
  41.             }
  42.         }
  44.         $event->setResponse(new RedirectResponse('/login'));
  47.         // get recaptcha from request and validate it.if you want to prevent request to call next event, just set response for event. $event->setResponse($response)
  48.     }
  50.     public static function getSubscribedEvents()
  51.     {
  52.         return [
  53.             KernelEvents::REQUEST => ['onKernelRequest', 9]
  54.         ];
  55.     }
  56. }