Add BaseVoter and Authorization Service Provider

PLUG-112

lib/Alchemy/Phrasea/Authorization/AuthorizationChecker.php

@@ -0,0 +1,36 @@
+<?php
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2015 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Alchemy\Phrasea\Authorization;
+
+use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
+use Symfony\Component\Security\Core\Authorization\AccessDecisionManager;
+
+class AuthorizationChecker
+{
+    /** @var AccessDecisionManager */
+    private $accessDecisionManager;
+    /** @var TokenInterface */
+    private $token;
+
+    public function __construct(AccessDecisionManager $accessDecisionManager, TokenInterface $token)
+    {
+        $this->accessDecisionManager = $accessDecisionManager;
+        $this->token = $token;
+    }
+
+    public function isGranted($attributes, $object = null)
+    {
+        if (!is_array($attributes)) {
+            $attributes = [$attributes];
+        }
+
+        return $this->accessDecisionManager->decide($this->token, $attributes, $object);
+    }
+}