--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/bundles/JMS/SecurityExtraBundle/Security/Authorization/AfterInvocation/AclAfterInvocationProvider.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,111 @@
+<?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\Authorization\AfterInvocation;
+
+use Symfony\Component\HttpKernel\Log\LoggerInterface;
+use Symfony\Component\Security\Acl\Exception\AclNotFoundException;
+use Symfony\Component\Security\Acl\Exception\NoAceFoundException;
+use Symfony\Component\Security\Acl\Model\SecurityIdentityRetrievalStrategyInterface;
+use Symfony\Component\Security\Acl\Model\ObjectIdentityRetrievalStrategyInterface;
+use Symfony\Component\Security\Acl\Model\AclProviderInterface;
+use Symfony\Component\Security\Acl\Permission\PermissionMapInterface;
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Core\Exception\AccessDeniedException;
+
+/**
+ * This after invocation provider filters returned objects based on ACLs.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class AclAfterInvocationProvider implements AfterInvocationProviderInterface
+{
+    private $aclProvider;
+    private $oidRetrievalStrategy;
+    private $sidRetrievalStrategy;
+    private $permissionMap;
+    private $logger;
+
+    public function __construct(AclProviderInterface $aclProvider, ObjectIdentityRetrievalStrategyInterface $oidRetrievalStrategy, SecurityIdentityRetrievalStrategyInterface $sidRetrievalStrategy, PermissionMapInterface $permissionMap, LoggerInterface $logger = null)
+    {
+        $this->aclProvider = $aclProvider;
+        $this->oidRetrievalStrategy = $oidRetrievalStrategy;
+        $this->sidRetrievalStrategy = $sidRetrievalStrategy;
+        $this->permissionMap = $permissionMap;
+        $this->logger = $logger;
+    }
+
+    public function decide(TokenInterface $token, $secureObject, array $attributes, $returnedObject)
+    {
+        if (null === $returnedObject) {
+            if (null !== $this->logger) {
+                $this->logger->debug('Returned object was null, skipping security check.');
+            }
+
+            return null;
+        }
+
+        foreach ($attributes as $attribute) {
+            if (!$this->supportsAttribute($attribute)) {
+                continue;
+            }
+
+            if (null === $oid = $this->oidRetrievalStrategy->getObjectIdentity($returnedObject)) {
+                if (null !== $this->logger) {
+                    $this->logger->debug('Returned object was no domain object, skipping security check.');
+                }
+
+                return $returnedObject;
+            }
+
+            $sids = $this->sidRetrievalStrategy->getSecurityIdentities($token);
+
+            try {
+                $acl = $this->aclProvider->findAcl($oid, $sids);
+                if ($acl->isGranted($this->permissionMap->getMasks($attribute, $returnedObject), $sids, false)) {
+                    return $returnedObject;
+                }
+
+                if (null !== $this->logger) {
+                    $this->logger->debug('Token has been denied access for returned object.');
+                }
+            } catch (AclNotFoundException $noAcl) {
+                throw new AccessDeniedException('No applicable ACL found for domain object.');
+            } catch (NoAceFoundException $noAce) {
+                if (null !== $this->logger) {
+                    $this->logger->debug('No applicable ACE found for the given Token, denying access.');
+                }
+            }
+
+            throw new AccessDeniedException('ACL has denied access for attribute: '.$attribute);
+        }
+
+        // no attribute was supported
+        return $returnedObject;
+    }
+
+    public function supportsAttribute($attribute)
+    {
+        return $this->permissionMap->contains($attribute);
+    }
+
+    public function supportsClass($className)
+    {
+        return true;
+    }
+}
\ No newline at end of file