--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/bundles/JMS/SecurityExtraBundle/Security/Authentication/Provider/RunAsAuthenticationProvider.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,57 @@
+<?php
+
+/*
+ * Copyright 2010 Johannes M. Schmitt <schmittjoh@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+namespace JMS\SecurityExtraBundle\Security\Authentication\Provider;
+
+use Symfony\Component\Security\Core\Exception\BadCredentialsException;
+use JMS\SecurityExtraBundle\Security\Authentication\Token\RunAsUserToken;
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Core\Authentication\Provider\AuthenticationProviderInterface;
+
+/**
+ * Class which authenticates RunAsTokens.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class RunAsAuthenticationProvider implements AuthenticationProviderInterface
+{
+    private $key;
+
+    public function __construct($key)
+    {
+        $this->key = $key;
+    }
+
+    public function authenticate(TokenInterface $token)
+    {
+        if (!$this->supports($token)) {
+            return null;
+        }
+
+        if ($token->getKey() === $this->key) {
+            return $token;
+        } else {
+            throw new BadCredentialsException('The keys do not match.');
+        }
+    }
+
+    public function supports(TokenInterface $token)
+    {
+        return $token instanceof RunAsUserToken;
+    }
+}
\ No newline at end of file