Symfony Profiler

<?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 Sensio\Bundle\FrameworkExtraBundle\EventListener;
use Psr\Log\LoggerInterface;
use Sensio\Bundle\FrameworkExtraBundle\Request\ArgumentNameConverter;
use Sensio\Bundle\FrameworkExtraBundle\Security\ExpressionLanguage;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\KernelEvent;
use Symfony\Component\HttpKernel\Exception\HttpException;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\Security\Core\Authentication\AuthenticationTrustResolverInterface;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
use Symfony\Component\Security\Core\Exception\AccessDeniedException;
use Symfony\Component\Security\Core\Role\RoleHierarchyInterface;
/**
* SecurityListener handles security restrictions on controllers.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class SecurityListener implements EventSubscriberInterface
{
private $argumentNameConverter;
private $tokenStorage;
private $authChecker;
private $language;
private $trustResolver;
private $roleHierarchy;
private $logger;
public function __construct(ArgumentNameConverter $argumentNameConverter, ExpressionLanguage $language = null, AuthenticationTrustResolverInterface $trustResolver = null, RoleHierarchyInterface $roleHierarchy = null, TokenStorageInterface $tokenStorage = null, AuthorizationCheckerInterface $authChecker = null, LoggerInterface $logger = null)
{
$this->argumentNameConverter = $argumentNameConverter;
$this->tokenStorage = $tokenStorage;
$this->authChecker = $authChecker;
$this->language = $language;
$this->trustResolver = $trustResolver;
$this->roleHierarchy = $roleHierarchy;
$this->logger = $logger;
}
public function onKernelControllerArguments(KernelEvent $event)
{
$request = $event->getRequest();
if (!$configurations = $request->attributes->get('_security')) {
return;
}
if (null === $this->tokenStorage || null === $this->trustResolver) {
throw new \LogicException('To use the @Security tag, you need to install the Symfony Security bundle.');
}
if (null === $this->tokenStorage->getToken()) {
throw new \LogicException('To use the @Security tag, your controller needs to be behind a firewall.');
}
if (null === $this->language) {
throw new \LogicException('To use the @Security tag, you need to use the Security component 2.4 or newer and install the ExpressionLanguage component.');
}
foreach ($configurations as $configuration) {
if (!$this->language->evaluate($configuration->getExpression(), $this->getVariables($event))) {
if ($statusCode = $configuration->getStatusCode()) {
throw new HttpException($statusCode, $configuration->getMessage());
}
throw new AccessDeniedException($configuration->getMessage() ?: sprintf('Expression "%s" denied access.', $configuration->getExpression()));
}
}
}
// code should be sync with Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter
private function getVariables(KernelEvent $event)
{
$request = $event->getRequest();
$token = $this->tokenStorage->getToken();
if (method_exists($this->roleHierarchy, 'getReachableRoleNames')) {
if (null !== $this->roleHierarchy) {
$roles = $this->roleHierarchy->getReachableRoleNames($token->getRoleNames());
} else {
$roles = $token->getRoleNames();
}
} else {
if (null !== $this->roleHierarchy) {
$roles = $this->roleHierarchy->getReachableRoles($token->getRoles());
} else {
$roles = $token->getRoles();
}
$roles = array_map(function ($role) {
return $role->getRole();
}, $roles);
}
$variables = [
'token' => $token,
'user' => $token->getUser(),
'object' => $request,
'subject' => $request,
'request' => $request,
'roles' => $roles,
'trust_resolver' => $this->trustResolver,
// needed for the is_granted expression function
'auth_checker' => $this->authChecker,
];
$controllerArguments = $this->argumentNameConverter->getControllerArguments($event);
if ($diff = array_intersect(array_keys($variables), array_keys($controllerArguments))) {
foreach ($diff as $key => $variableName) {
if ($variables[$variableName] === $controllerArguments[$variableName]) {
unset($diff[$key]);
}
}
if ($diff) {
$singular = 1 === \count($diff);
if (null !== $this->logger) {
$this->logger->warning(sprintf('Controller argument%s "%s" collided with the built-in security expression variables. The built-in value%s are being used for the @Security expression.', $singular ? '' : 's', implode('", "', $diff), $singular ? 's' : ''));
}
}
}
// controller variables should also be accessible
return array_merge($controllerArguments, $variables);
}
/**
* {@inheritdoc}
*/
public static function getSubscribedEvents()
{
return [KernelEvents::CONTROLLER_ARGUMENTS => 'onKernelControllerArguments'];
}
}

vendor/sensio/framework-extra-bundle/src/EventListener/SecurityListener.php line 53