Initial Release of the calendar plugin

dav/SabreDAV/lib/Sabre/DAV/Auth/Plugin.php

@@ -0,0 +1,111 @@
+<?php
+
+/**
+ * This plugin provides Authentication for a WebDAV server.
+ *
+ * It relies on a Backend object, which provides user information.
+ *
+ * Additionally, it provides support for:
+ *  * {DAV:}current-user-principal property from RFC5397
+ *  * {DAV:}principal-collection-set property from RFC3744
+ *
+ * @package Sabre
+ * @subpackage DAV
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_DAV_Auth_Plugin extends Sabre_DAV_ServerPlugin {
+
+    /**
+     * Reference to main server object
+     *
+     * @var Sabre_DAV_Server
+     */
+    private $server;
+
+    /**
+     * Authentication backend
+     *
+     * @var Sabre_DAV_Auth_IBackend
+     */
+    private $authBackend;
+
+    /**
+     * The authentication realm.
+     *
+     * @var string
+     */
+    private $realm;
+
+    /**
+     * __construct
+     *
+     * @param Sabre_DAV_Auth_IBackend $authBackend
+     * @param string $realm
+     */
+    public function __construct(Sabre_DAV_Auth_IBackend $authBackend, $realm) {
+
+        $this->authBackend = $authBackend;
+        $this->realm = $realm;
+
+    }
+
+    /**
+     * Initializes the plugin. This function is automatically called by the server
+     *
+     * @param Sabre_DAV_Server $server
+     * @return void
+     */
+    public function initialize(Sabre_DAV_Server $server) {
+
+        $this->server = $server;
+        $this->server->subscribeEvent('beforeMethod',array($this,'beforeMethod'),10);
+
+    }
+
+    /**
+     * Returns a plugin name.
+     *
+     * Using this name other plugins will be able to access other plugins
+     * using Sabre_DAV_Server::getPlugin
+     *
+     * @return string
+     */
+    public function getPluginName() {
+
+        return 'auth';
+
+    }
+
+    /**
+     * Returns the current users' principal uri.
+     *
+     * If nobody is logged in, this will return null.
+     *
+     * @return string|null
+     */
+    public function getCurrentUser() {
+
+        $userInfo = $this->authBackend->getCurrentUser();
+        if (!$userInfo) return null;
+
+        return $userInfo;
+
+    }
+
+    /**
+     * This method is called before any HTTP method and forces users to be authenticated
+     *
+     * @param string $method
+     * @param string $uri
+     * @throws Sabre_DAV_Exception_NotAuthenticated
+     * @return bool
+     */
+    public function beforeMethod($method, $uri) {
+
+        $this->authBackend->authenticate($this->server,$this->realm);
+
+    }
+
+}