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- <?php
- namespace Drupal\Core\Authentication;
- use Symfony\Component\HttpFoundation\Request;
- /**
- * Generate a challenge when access is denied for unauthenticated users.
- *
- * On a 403 (access denied), if there are no credentials on the request, some
- * authentication methods (e.g. basic auth) require that a challenge is sent to
- * the client.
- */
- interface AuthenticationProviderChallengeInterface {
- /**
- * Constructs an exception which is used to generate the challenge.
- *
- * @param \Symfony\Component\HttpFoundation\Request $request
- * The request.
- * @param \Exception $previous
- * The previous exception.
- *
- * @return \Symfony\Component\HttpKernel\Exception\HttpExceptionInterface|null
- * An exception to be used in order to generate an authentication challenge.
- */
- public function challengeException(Request $request, \Exception $previous);
- }
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