vendor/symfony/security-core/Security.php line 40

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  1. <?php
  3. /*
  4. * This file is part of the Symfony package.
  5. *
  6. * (c) Fabien Potencier <fabien@symfony.com>
  7. *
  8. * For the full copyright and license information, please view the LICENSE
  9. * file that was distributed with this source code.
  10. */
  12. namespace Symfony\Component\Security\Core;
  14. use Psr\Container\ContainerInterface;
  15. use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
  16. use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
  17. use Symfony\Component\Security\Core\User\UserInterface;
  19. /**
  20. * Helper class for commonly-needed security tasks.
  21. *
  22. * @final
  23. */
  24. class Security implements AuthorizationCheckerInterface
  25. {
  26. public const ACCESS_DENIED_ERROR = '_security.403_error';
  27. public const AUTHENTICATION_ERROR = '_security.last_error';
  28. public const LAST_USERNAME = '_security.last_username';
  29. public const MAX_USERNAME_LENGTH = 4096;
  31. private $container;
  33. public function __construct(ContainerInterface $container)
  34. {
  35. $this->container = $container;
  36. }
  38. public function getUser(): ?UserInterface
  39. {
  40. if (!$token = $this->getToken()) {
  41. return null;
  42. }
  44. $user = $token->getUser();
  46. // @deprecated since Symfony 5.4, $user will always be a UserInterface instance
  47. if (!$user instanceof UserInterface) {
  48. return null;
  49. }
  51. return $user;
  52. }
  54. /**
  55. * Checks if the attributes are granted against the current authentication token and optionally supplied subject.
  56. *
  57. * @param mixed $attributes
  58. * @param mixed $subject
  59. */
  60. public function isGranted($attributes, $subject = null): bool
  61. {
  62. return $this->container->get('security.authorization_checker')
  63. ->isGranted($attributes, $subject);
  64. }
  66. public function getToken(): ?TokenInterface
  67. {
  68. return $this->container->get('security.token_storage')->getToken();
  69. }
  70. }