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<?php
/**
* @author Arthur Schiwon <blizzz@owncloud.com>
* @author Christopher Schäpers <kondou@ts.unde.re>
* @author Lukas Reschke <lukas@owncloud.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\user_ldap;
use OCA\user_ldap\lib\ILDAPWrapper;
use OCA\User_LDAP\lib\User\User;
use \OCA\user_ldap\User_LDAP;
use OCP\IConfig;
class User_Proxy extends lib\Proxy implements \OCP\IUserBackend, \OCP\UserInterface {
private $backends = array();
private $refBackend = null;
/**
* Constructor
* @param array $serverConfigPrefixes array containing the config Prefixes
*/
public function __construct(array $serverConfigPrefixes, ILDAPWrapper $ldap, IConfig $ocConfig) {
parent::__construct($ldap);
foreach($serverConfigPrefixes as $configPrefix) {
$this->backends[$configPrefix] =
new User_LDAP($this->getAccess($configPrefix), $ocConfig);
if(is_null($this->refBackend)) {
$this->refBackend = &$this->backends[$configPrefix];
}
}
}
/**
* Tries the backends one after the other until a positive result is returned from the specified method
* @param string $uid the uid connected to the request
* @param string $method the method of the user backend that shall be called
* @param array $parameters an array of parameters to be passed
* @return mixed the result of the method or false
*/
protected function walkBackends($uid, $method, $parameters) {
$cacheKey = $this->getUserCacheKey($uid);
foreach($this->backends as $configPrefix => $backend) {
$instance = $backend;
if(!method_exists($instance, $method)
&& method_exists($this->getAccess($configPrefix), $method)) {
$instance = $this->getAccess($configPrefix);
}
if($result = call_user_func_array(array($instance, $method), $parameters)) {
$this->writeToCache($cacheKey, $configPrefix);
return $result;
}
}
return false;
}
/**
* Asks the backend connected to the server that supposely takes care of the uid from the request.
* @param string $uid the uid connected to the request
* @param string $method the method of the user backend that shall be called
* @param array $parameters an array of parameters to be passed
* @param mixed $passOnWhen the result matches this variable
* @return mixed the result of the method or false
*/
protected function callOnLastSeenOn($uid, $method, $parameters, $passOnWhen) {
$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])) {
$instance = $this->backends[$prefix];
if(!method_exists($instance, $method)
&& method_exists($this->getAccess($prefix), $method)) {
$instance = $this->getAccess($prefix);
}
$result = call_user_func_array(array($instance, $method), $parameters);
if($result === $passOnWhen) {
//not found here, reset cache to null if user vanished
//because sometimes methods return false with a reason
$userExists = call_user_func_array(
array($this->backends[$prefix], 'userExists'),
array($uid)
);
if(!$userExists) {
$this->writeToCache($cacheKey, null);
}
}
return $result;
}
}
return false;
}
/**
* Check if backend implements actions
* @param int $actions bitwise-or'ed actions
* @return boolean
*
* Returns the supported actions as int to be
* compared with OC_USER_BACKEND_CREATE_USER etc.
*/
public function implementsActions($actions) {
//it's the same across all our user backends obviously
return $this->refBackend->implementsActions($actions);
}
/**
* Backend name to be shown in user management
* @return string the name of the backend to be shown
*/
public function getBackendName() {
return $this->refBackend->getBackendName();
}
/**
* Get a list of all users
*
* @param string $search
* @param null|int $limit
* @param null|int $offset
* @return string[] an array of all uids
*/
public function getUsers($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;
}
/**
* check if a user exists
* @param string $uid the username
* @return boolean
*/
public function userExists($uid) {
return $this->handleRequest($uid, 'userExists', array($uid));
}
/**
* check if a user exists on LDAP
* @param string|\OCA\User_LDAP\lib\User\User $user either the ownCloud user
* name or an instance of that user
* @return boolean
*/
public function userExistsOnLDAP($user) {
$id = ($user instanceof User) ? $user->getUsername() : $user;
return $this->handleRequest($id, 'userExistsOnLDAP', array($user));
}
/**
* Check if the password is correct
* @param string $uid The username
* @param string $password The password
* @return bool
*
* Check if the password is correct without logging in the user
*/
public function checkPassword($uid, $password) {
return $this->handleRequest($uid, 'checkPassword', array($uid, $password));
}
/**
* returns the username for the given login name, if available
*
* @param string $loginName
* @return string|false
*/
public function loginName2UserName($loginName) {
$id = 'LOGINNAME,' . $loginName;
return $this->handleRequest($id, 'loginName2UserName', array($loginName));
}
/**
* get the user's home directory
* @param string $uid the username
* @return boolean
*/
public function getHome($uid) {
return $this->handleRequest($uid, 'getHome', array($uid));
}
/**
* get display name of the user
* @param string $uid user ID of the user
* @return string display name
*/
public function getDisplayName($uid) {
return $this->handleRequest($uid, 'getDisplayName', array($uid));
}
/**
* checks whether the user is allowed to change his avatar in ownCloud
* @param string $uid the ownCloud user name
* @return boolean either the user can or cannot
*/
public function canChangeAvatar($uid) {
return $this->handleRequest($uid, 'canChangeAvatar', array($uid), true);
}
/**
* Get a list of all display names and user ids.
* @param string $search
* @param string|null $limit
* @param string|null $offset
* @return array an array of all displayNames (value) and the corresponding uids (key)
*/
public function getDisplayNames($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 = $users + $backendUsers;
}
}
return $users;
}
/**
* delete a user
* @param string $uid The username of the user to delete
* @return bool
*
* Deletes a user
*/
public function deleteUser($uid) {
return $this->handleRequest($uid, 'deleteUser', array($uid));
}
/**
* @return bool
*/
public function hasUserListings() {
return $this->refBackend->hasUserListings();
}
/**
* Count the number of users
* @return int|bool
*/
public function countUsers() {
$users = false;
foreach($this->backends as $backend) {
$backendUsers = $backend->countUsers();
if ($backendUsers !== false) {
$users += $backendUsers;
}
}
return $users;
}
}
|
