238 lines
7.0 KiB
PHP
238 lines
7.0 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Artuhr Schiwon
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* @copyright 2013 Arthur Schiwon blizzz@owncloud.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\user_ldap;
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use OCA\user_ldap\lib\ILDAPWrapper;
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class User_Proxy extends lib\Proxy implements \OCP\UserInterface {
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private $backends = array();
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private $refBackend = null;
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/**
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* @brief Constructor
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* @param array $serverConfigPrefixes array containing the config Prefixes
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*/
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public function __construct($serverConfigPrefixes, ILDAPWrapper $ldap) {
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parent::__construct($ldap);
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foreach($serverConfigPrefixes as $configPrefix) {
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$this->backends[$configPrefix] =
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new \OCA\user_ldap\USER_LDAP($this->getAccess($configPrefix));
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if(is_null($this->refBackend)) {
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$this->refBackend = &$this->backends[$configPrefix];
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}
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}
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}
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/**
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* @brief Tries the backends one after the other until a positive result is returned from the specified method
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* @param string $uid the uid connected to the request
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* @param string $method the method of the user backend that shall be called
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* @param array $parameters an array of parameters to be passed
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* @return mixed the result of the method or false
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*/
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protected function walkBackends($uid, $method, $parameters) {
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$cacheKey = $this->getUserCacheKey($uid);
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foreach($this->backends as $configPrefix => $backend) {
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$instance = $backend;
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if(!method_exists($instance, $method)
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&& method_exists($this->getAccess($configPrefix), $method)) {
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$instance = $this->getAccess($configPrefix);
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}
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if($result = call_user_func_array(array($instance, $method), $parameters)) {
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$this->writeToCache($cacheKey, $configPrefix);
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return $result;
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}
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}
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return false;
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}
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/**
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* @brief Asks the backend connected to the server that supposely takes care of the uid from the request.
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* @param string $uid the uid connected to the request
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* @param string $method the method of the user backend that shall be called
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* @param array $parameters an array of parameters to be passed
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* @param mixed $passOnWhen the result matches this variable
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* @return mixed the result of the method or false
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*/
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protected function callOnLastSeenOn($uid, $method, $parameters, $passOnWhen) {
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$cacheKey = $this->getUserCacheKey($uid);
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$prefix = $this->getFromCache($cacheKey);
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//in case the uid has been found in the past, try this stored connection first
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if(!is_null($prefix)) {
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if(isset($this->backends[$prefix])) {
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$instance = $this->backends[$prefix];
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if(!method_exists($instance, $method)
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&& method_exists($this->getAccess($prefix), $method)) {
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$instance = $this->getAccess($prefix);
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}
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$result = call_user_func_array(array($instance, $method), $parameters);
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if($result === $passOnWhen) {
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//not found here, reset cache to null if user vanished
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//because sometimes methods return false with a reason
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$userExists = call_user_func_array(
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array($this->backends[$prefix], 'userExists'),
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array($uid)
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);
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if(!$userExists) {
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$this->writeToCache($cacheKey, null);
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}
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}
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return $result;
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}
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}
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return false;
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}
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/**
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* @brief Check if backend implements actions
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* @param int $actions bitwise-or'ed actions
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* @return boolean
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*
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* Returns the supported actions as int to be
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* compared with OC_USER_BACKEND_CREATE_USER etc.
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*/
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public function implementsActions($actions) {
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//it's the same across all our user backends obviously
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return $this->refBackend->implementsActions($actions);
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}
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/**
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* @brief Get a list of all users
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* @return string[] with all uids
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*
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* Get a list of all users.
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*/
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public function getUsers($search = '', $limit = 10, $offset = 0) {
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//we do it just as the /OC_User implementation: do not play around with limit and offset but ask all backends
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$users = array();
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foreach($this->backends as $backend) {
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$backendUsers = $backend->getUsers($search, $limit, $offset);
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if (is_array($backendUsers)) {
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$users = array_merge($users, $backendUsers);
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}
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}
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return $users;
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}
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/**
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* @brief check if a user exists
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* @param string $uid the username
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* @return boolean
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*/
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public function userExists($uid) {
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return $this->handleRequest($uid, 'userExists', array($uid));
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}
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/**
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* @brief Check if the password is correct
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* @param string $uid The username
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* @param string $password The password
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* @return bool
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*
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* Check if the password is correct without logging in the user
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*/
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public function checkPassword($uid, $password) {
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return $this->handleRequest($uid, 'checkPassword', array($uid, $password));
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}
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/**
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* @brief get the user's home directory
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* @param string $uid the username
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* @return boolean
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*/
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public function getHome($uid) {
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return $this->handleRequest($uid, 'getHome', array($uid));
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}
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/**
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* @brief get display name of the user
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* @param string $uid user ID of the user
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* @return string display name
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*/
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public function getDisplayName($uid) {
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return $this->handleRequest($uid, 'getDisplayName', array($uid));
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}
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/**
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* @brief checks whether the user is allowed to change his avatar in ownCloud
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* @param string $uid the ownCloud user name
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* @return boolean either the user can or cannot
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*/
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public function canChangeAvatar($uid) {
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return $this->handleRequest($uid, 'canChangeAvatar', array($uid), true);
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}
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/**
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* @brief Get a list of all display names
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* @return array with all displayNames (value) and the corresponding uids (key)
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*
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* Get a list of all display names and user ids.
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*/
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public function getDisplayNames($search = '', $limit = null, $offset = null) {
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//we do it just as the /OC_User implementation: do not play around with limit and offset but ask all backends
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$users = array();
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foreach($this->backends as $backend) {
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$backendUsers = $backend->getDisplayNames($search, $limit, $offset);
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if (is_array($backendUsers)) {
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$users = $users + $backendUsers;
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}
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}
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return $users;
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}
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/**
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* @brief delete a user
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* @param string $uid The username of the user to delete
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* @return bool
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*
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* Deletes a user
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*/
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public function deleteUser($uid) {
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return false;
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}
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/**
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* @return bool
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*/
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public function hasUserListings() {
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return $this->refBackend->hasUserListings();
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}
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/**
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* @brief Count the number of users
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* @return int|bool
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*/
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public function countUsers() {
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$users = false;
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foreach($this->backends as $backend) {
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$backendUsers = $backend->countUsers();
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if ($backendUsers !== false) {
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$users += $backendUsers;
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}
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}
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return $users;
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}
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}
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