Add authorization strategy for WAMP topics

lib/Alchemy/Phrasea/Websocket/Topics/Directive.php

@@ -0,0 +1,75 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2014 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Websocket\Topics;
+
+use Alchemy\Phrasea\Websocket\Consumer\ConsumerInterface;
+
+/**
+ * Stores consumer required settings for a topic
+ */
+class Directive
+{
+    private $topic;
+    private $requireAuthentication;
+    private $requiredRights;
+
+    public function __construct($topic, $requireAuthentication, array $requiredRights)
+    {
+        $this->topic = $topic;
+        $this->requireAuthentication = (Boolean) $requireAuthentication;
+        $this->requiredRights = $requiredRights;
+    }
+
+    /**
+     * @return string
+     */
+    public function getTopic()
+    {
+        return $this->topic;
+    }
+
+    /**
+     * Returns true if the topic requires an authenticated consumer
+     *
+     * @return Boolean
+     */
+    public function requireAuthentication()
+    {
+        return $this->requireAuthentication;
+    }
+
+    /**
+     * Returns an array of required rights for the authenticated consumer
+     *
+     * @return array
+     */
+    public function getRequiredRights()
+    {
+        return $this->requiredRights;
+    }
+
+    /**
+     * Returns true if the consumer satisfies the directive
+     *
+     * @param ConsumerInterface $consumer
+     *
+     * @return Boolean
+     */
+    public function isStatisfiedBy(ConsumerInterface $consumer)
+    {
+        if ($this->requireAuthentication() && !$consumer->isAuthenticated()) {
+            return false;
+        }
+
+        return $consumer->hasRights($this->getRequiredRights());
+    }
+}