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 Symfony\Component\Workflow\EventListener;
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\Role\RoleHierarchyInterface;
use Symfony\Component\Validator\Validator\ValidatorInterface;
use Symfony\Component\Workflow\Event\GuardEvent;
use Symfony\Component\Workflow\TransitionBlocker;
/**
* @author Grégoire Pineau <lyrixx@lyrixx.info>
*/
class GuardListener
{
private $configuration;
private $expressionLanguage;
private $tokenStorage;
private $authorizationChecker;
private $trustResolver;
private $roleHierarchy;
private $validator;
public function __construct(array $configuration, ExpressionLanguage $expressionLanguage, TokenStorageInterface $tokenStorage, AuthorizationCheckerInterface $authorizationChecker, AuthenticationTrustResolverInterface $trustResolver, RoleHierarchyInterface $roleHierarchy = null, ValidatorInterface $validator = null)
{
$this->configuration = $configuration;
$this->expressionLanguage = $expressionLanguage;
$this->tokenStorage = $tokenStorage;
$this->authorizationChecker = $authorizationChecker;
$this->trustResolver = $trustResolver;
$this->roleHierarchy = $roleHierarchy;
$this->validator = $validator;
}
public function onTransition(GuardEvent $event, string $eventName)
{
if (!isset($this->configuration[$eventName])) {
return;
}
$eventConfiguration = (array) $this->configuration[$eventName];
foreach ($eventConfiguration as $guard) {
if ($guard instanceof GuardExpression) {
if ($guard->getTransition() !== $event->getTransition()) {
continue;
}
$this->validateGuardExpression($event, $guard->getExpression());
} else {
$this->validateGuardExpression($event, $guard);
}
}
}
private function validateGuardExpression(GuardEvent $event, string $expression)
{
if (!$this->expressionLanguage->evaluate($expression, $this->getVariables($event))) {
$blocker = TransitionBlocker::createBlockedByExpressionGuardListener($expression);
$event->addTransitionBlocker($blocker);
}
}
// code should be sync with Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter
private function getVariables(GuardEvent $event): array
{
$token = $this->tokenStorage->getToken();
$variables = [
'subject' => $event->getSubject(),
// needed for the is_granted expression function
'auth_checker' => $this->authorizationChecker,
// needed for the is_* expression function
'trust_resolver' => $this->trustResolver,
// needed for the is_valid expression function
'validator' => $this->validator,
];
if (null === $token) {
return $variables + [
'token' => null,
'user' => null,
'role_names' => [],
];
}
return $variables + [
'token' => $token,
'user' => $token->getUser(),
'role_names' => $this->roleHierarchy->getReachableRoleNames($token->getRoleNames()),
];
}
}

vendor/symfony/workflow/EventListener/GuardListener.php line 46