1 <?php

     2 

     3 /*

     4  * Copyright 2010 Johannes M. Schmitt <schmittjoh@gmail.com>

     5  *

     6  * Licensed under the Apache License, Version 2.0 (the "License");

     7  * you may not use this file except in compliance with the License.

     8  * You may obtain a copy of the License at

     9  *

    10  * http://www.apache.org/licenses/LICENSE-2.0

    11  *

    12  * Unless required by applicable law or agreed to in writing, software

    13  * distributed under the License is distributed on an "AS IS" BASIS,

    14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    15  * See the License for the specific language governing permissions and

    16  * limitations under the License.

    17  */

    18 

    19 namespace JMS\SecurityExtraBundle\Security\Authentication\Provider;

    20 

    21 use Symfony\Component\Security\Core\Exception\BadCredentialsException;

    22 use JMS\SecurityExtraBundle\Security\Authentication\Token\RunAsUserToken;

    23 use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;

    24 use Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface;

    25 

    26 /**

    27  * Class which authenticates RunAsTokens.

    28  *

    29  * @author Johannes M. Schmitt <schmittjoh@gmail.com>

    30  */

    31 class RunAsAuthenticationProvider implements AuthenticationProviderInterface

    32 {

    33     private $key;

    34 

    35     public function __construct($key)

    36     {

    37         $this->key = $key;

    38     }

    39 

    40     public function authenticate(TokenInterface $token)

    41     {

    42         if (!$this->supports($token)) {

    43             return null;

    44         }

    45 

    46         if ($token->getKey() === $this->key) {

    47             return $token;

    48         } else {

    49             throw new BadCredentialsException('The keys do not match.');

    50         }

    51     }

    52 

    53     public function supports(TokenInterface $token)

    54     {

    55         return $token instanceof RunAsUserToken;

    56     }

    57 }