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<?php
namespace Symfony\Component\Security\Authentication\Provider;
use Symfony\Component\Security\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Exception\BadCredentialsException;
use Symfony\Component\Security\Authentication\Token\AnonymousToken;
/*
* This file is part of the Symfony framework.
*
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
/**
* AnonymousAuthenticationProvider validates AnonymousToken instances.
*
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
*/
class AnonymousAuthenticationProvider implements AuthenticationProviderInterface
{
protected $key;
/**
* Constructor.
*
* @param string $key The key shared with the authentication token
*/
public function __construct($key)
{
$this->key = $key;
}
/**
* {@inheritdoc}
*/
public function authenticate(TokenInterface $token)
{
if (!$this->supports($token)) {
return null;
}
if ($this->key != $token->getKey()) {
throw new BadCredentialsException('The Token does not contain the expected key.');
}
return $token;
}
/**
* {@inheritdoc}
*/
public function supports(TokenInterface $token)
{
return $token instanceof AnonymousToken;
}
}
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