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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien.potencier@symfony-project.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\HttpKernelInterface;
use Symfony\Component\HttpKernel\Events;
use Symfony\Component\HttpKernel\Event\RequestEventArgs;
use Symfony\Component\HttpFoundation\Request;
use Doctrine\Common\EventManager;
/**
* 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.potencier@symfony-project.com>
*/
class Firewall
{
protected $map;
protected $evm;
protected $currentListeners;
/**
* Constructor.
*
* @param FirewallMap $map A FirewallMap instance
*/
public function __construct(FirewallMapInterface $map, EventManager $evm)
{
$this->map = $map;
$this->evm = $evm;
$this->currentListeners = array();
}
/**
* Handles security.
*
* @param RequestEventArgs $eventArgs An RequestEventArgs instance
*/
public function onCoreRequest(RequestEventArgs $eventArgs)
{
if (HttpKernelInterface::MASTER_REQUEST !== $eventArgs->getRequestType()) {
return;
}
$request = $eventArgs->getRequest();
// disconnect all listeners from onCoreSecurity to avoid the overhead
// of most listeners having to do this manually
$this->evm->removeEventListeners(Events::onCoreSecurity);
// ensure that listeners disconnect from wherever they have connected to
foreach ($this->currentListeners as $listener) {
$listener->unregister($this->evm);
}
// register listeners for this firewall
list($listeners, $exception) = $this->map->getListeners($request);
if (null !== $exception) {
$exception->register($this->evm);
}
foreach ($listeners as $listener) {
$listener->register($this->evm);
}
// save current listener instances
$this->currentListeners = $listeners;
if (null !== $exception) {
$this->currentListeners[] = $exception;
}
// initiate the listener chain
$securityEventArgs = new RequestEventArgs($eventArgs->getKernel(), $request, $eventArgs->getRequestType());
$this->evm->dispatchEvent($securityEventArgs);
if ($securityEventArgs->hasResponse()) {
$eventArgs->setResponse($securityEventArgs->getResponse());
}
}
}
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