FrameHeaderListener.php

<?php
namespace Manwin\YouPorn\WebFrontBundle\EventListener;

use Symfony\Component\HttpKernel\Event\FilterResponseEvent;

class FrameHeaderListener
{
	public function onKernelResponse(FilterResponseEvent $event)
	{
		if (!$event->isMasterRequest()) {
			return;
		}

		$response = $event->getResponse();

		if ($response->isRedirection()) {
			return;
		}

		$currentPath = $event->getRequest()->getPathInfo() ?: '/';

		if (0 === strpos($currentPath, '/embed/')) {
			return;
		}

		$response->headers->set('X-Frame-Options', 'DENY');
	}
}