From 09c54722a877352713d8cefdb6a0a92860633898 Mon Sep 17 00:00:00 2001
From: Arthur Schiwon <blizzz@owncloud.com>
Date: Fri, 11 Jan 2013 18:13:22 +0100
Subject: add LDAP User and Group proxies to suppoer multiple servers

---
 apps/user_ldap/user_proxy.php | 159 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100644 apps/user_ldap/user_proxy.php

(limited to 'apps/user_ldap/user_proxy.php')

diff --git a/apps/user_ldap/user_proxy.php b/apps/user_ldap/user_proxy.php
new file mode 100644
index 00000000000..47f901ddb51
--- /dev/null
+++ b/apps/user_ldap/user_proxy.php
@@ -0,0 +1,159 @@
+<?php
+
+/**
+ * ownCloud
+ *
+ * @author Artuhr Schiwon
+ * @copyright 2013 Arthur Schiwon blizzz@owncloud.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\user_ldap;
+
+class User_Proxy extends lib\Proxy implements \OCP\UserInterface {
+	private $backends = array();
+	private $refBackend = null;
+
+	/**
+	 * @brief Constructor
+	 * @param $serverConfigPrefixes array containing the config Prefixes
+	 */
+	public function __construct($serverConfigPrefixes) {
+		parent::__construct();
+		foreach($serverConfigPrefixes as $configPrefix) {
+		    $this->backends[$configPrefix] = new \OCA\user_ldap\USER_LDAP();
+		    $connector = $this->getConnector($configPrefix);
+			$this->backends[$configPrefix]->setConnector($connector);
+			if(is_null($this->refBackend)) {
+				$this->refBackend = &$this->backends[$configPrefix];
+			}
+		}
+	}
+
+	/**
+	 * @brief Tries the backends one after the other until a positive result is returned from the specified method
+	 * @param $uid string, the uid connected to the request
+	 * @param $method string, the method of the user backend that shall be called
+	 * @param $parameters an array of parameters to be passed
+	 * @return mixed, the result of the method or false
+	 */
+	protected  function walkBackends($uid, $method, $parameters) {
+		$cacheKey = $this->getUserCacheKey($uid);
+		foreach($this->backends as $configPrefix => $backend) {
+		    if($result = call_user_func_array(array($backend, $method), $parameters)) {
+				$this->writeToCache($cacheKey, $configPrefix);
+				return $result;
+		    }
+		}
+		return false;
+	}
+
+	/**
+	 * @brief Asks the backend connected to the server that supposely takes care of the uid from the request.
+	 * @param $uid string, the uid connected to the request
+	 * @param $method string, the method of the user backend that shall be called
+	 * @param $parameters an array of parameters to be passed
+	 * @return mixed, the result of the method or false
+	 */
+	protected  function callOnLastSeenOn($uid, $method, $parameters) {
+		$cacheKey = $this->getUserCacheKey($uid);
+		$prefix = $this->getFromCache($cacheKey);
+		//in case the uid has been found in the past, try this stored connection first
+		if(!is_null($prefix)) {
+			if(isset($this->backends[$prefix])) {
+				$result = call_user_func_array(array($this->backends[$prefix], $method), $parameters);
+				if(!$result) {
+					//not found here, reset cache to null
+					$this->writeToCache($cacheKey, null);
+				}
+				return $result;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * @brief Check if backend implements actions
+	 * @param $actions bitwise-or'ed actions
+	 * @returns boolean
+	 *
+	 * Returns the supported actions as int to be
+	 * compared with OC_USER_BACKEND_CREATE_USER etc.
+	 */
+	public function implementsActions($actions) {
+		//it's the same across all our user backends obviously
+		return $this->refBackend->implementsActions($actions);
+	}
+
+	/**
+	 * @brief Get a list of all users
+	 * @returns array with all uids
+	 *
+	 * Get a list of all users.
+	 */
+	public function getUsers($search = '', $limit = 10, $offset = 0) {
+		//we do it just as the /OC_User implementation: do not play around with limit and offset but ask all backends
+		$users = array();
+		foreach($this->backends as $backend) {
+			$backendUsers = $backend->getUsers($search, $limit, $offset);
+			if (is_array($backendUsers)) {
+				$users = array_merge($users, $backendUsers);
+			}
+		}
+		return $users;
+	}
+
+	/**
+	 * @brief check if a user exists
+	 * @param string $uid the username
+	 * @return boolean
+	 */
+	public function userExists($uid) {
+		return $this->handleRequest($uid, 'userExists', array($uid));
+	}
+
+	/**
+	 * @brief Check if the password is correct
+	 * @param $uid The username
+	 * @param $password The password
+	 * @returns true/false
+	 *
+	 * Check if the password is correct without logging in the user
+	 */
+	public function checkPassword($uid, $password) {
+		return $this->handleRequest($uid, 'checkPassword', array($uid, $password));
+	}
+
+	/**
+	 * @brief get the user's home directory
+	 * @param string $uid the username
+	 * @return boolean
+	 */
+	public function getHome($uid) {
+		return $this->handleRequest($uid, 'getHome', array($uid));
+	}
+
+	/**
+	 * @brief delete a user
+	 * @param $uid The username of the user to delete
+	 * @returns true/false
+	 *
+	 * Deletes a user
+	 */
+	public function deleteUser($uid) {
+		return false;
+	}
+}
\ No newline at end of file
-- 
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