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<?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 get display name of the user
* @param $uid user ID of the user
* @return display name
*/
public function getDisplayName($uid) {
return $this->handleRequest($uid, 'getDisplayName', array($uid));
}
/**
* @brief Get a list of all display names
* @returns array with all displayNames (value) and the corresponding uids (key)
*
* Get a list of all display names and user ids.
*/
public function getDisplayNames($search = '', $limit = null, $offset = null) {
//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 = $backend->getDisplayNames($search, $limit, $offset);
if (is_array($backendUsers)) {
$users = array_merge($users, $backendUsers);
}
}
return $users;
}
/**
* @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;
}
/**
* @return bool
*/
public function hasUserListings() {
return $this->refBackend->hasUserListings();
}
}
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