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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Security\Http;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\Event\FinishRequestEvent;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* Firewall uses a FirewallMap to register security listeners for the given
* request.
*
* It allows for different security strategies within the same application
* (a Basic authentication for the /api, and a web based authentication for
* everything else for instance).
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Firewall implements EventSubscriberInterface
{
private $map;
private $dispatcher;
private $exceptionListeners;
/**
* Constructor.
*
* @param FirewallMapInterface $map A FirewallMapInterface instance
* @param EventDispatcherInterface $dispatcher An EventDispatcherInterface instance
*/
public function __construct(FirewallMapInterface $map, EventDispatcherInterface $dispatcher)
{
$this->map = $map;
$this->dispatcher = $dispatcher;
$this->exceptionListeners = new \SplObjectStorage();
}
/**
* Handles security.
*
* @param GetResponseEvent $event An GetResponseEvent instance
*/
public function onKernelRequest(GetResponseEvent $event)
{
if (!$event->isMasterRequest()) {
return;
}
// register listeners for this firewall
list($listeners, $exceptionListener) = $this->map->getListeners($event->getRequest());
if (null !== $exceptionListener) {
$this->exceptionListeners[$event->getRequest()] = $exceptionListener;
$exceptionListener->register($this->dispatcher);
}
// initiate the listener chain
foreach ($listeners as $listener) {
$listener->handle($event);
if ($event->hasResponse()) {
break;
}
}
}
public function onKernelFinishRequest(FinishRequestEvent $event)
{
$request = $event->getRequest();
if (isset($this->exceptionListeners[$request])) {
$this->exceptionListeners[$request]->unregister($this->dispatcher);
unset($this->exceptionListeners[$request]);
}
}
/**
* {@inheritdoc}
*/
public static function getSubscribedEvents()
{
return array(
KernelEvents::REQUEST => array('onKernelRequest', 8),
KernelEvents::FINISH_REQUEST => 'onKernelFinishRequest',
);
}
}
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