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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\Core;
use Psr\Container\ContainerInterface;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\User\UserInterface;
/**
* Helper class for commonly-needed security tasks.
*
* @final
*/
class Security
{
public const ACCESS_DENIED_ERROR = '_security.403_error';
public const AUTHENTICATION_ERROR = '_security.last_error';
public const LAST_USERNAME = '_security.last_username';
public const MAX_USERNAME_LENGTH = 4096;
private $container;
public function __construct(ContainerInterface $container)
{
$this->container = $container;
}
/**
* @return UserInterface|null
*/
public function getUser()
{
if (!$token = $this->getToken()) {
return null;
}
$user = $token->getUser();
if (!\is_object($user)) {
return null;
}
if (!$user instanceof UserInterface) {
@trigger_error(sprintf('Accessing the user object "%s" that is not an instance of "%s" from "%s()" is deprecated since Symfony 4.2, use "getToken()->getUser()" instead.', \get_class($user), UserInterface::class, __METHOD__), \E_USER_DEPRECATED);
// return null; // 5.0 behavior
}
return $user;
}
/**
* Checks if the attributes are granted against the current authentication token and optionally supplied subject.
*
* @param mixed $attributes
* @param mixed $subject
*/
public function isGranted($attributes, $subject = null): bool
{
return $this->container->get('security.authorization_checker')
->isGranted($attributes, $subject);
}
public function getToken(): ?TokenInterface
{
return $this->container->get('security.token_storage')->getToken();
}
}