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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @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 OC\User;
use \OCP\UserInterface;
/**
* Abstract base class for user management. Provides methods for querying backend
* capabilities.
*/
abstract class Backend implements UserInterface {
/**
* error code for functions not provided by the user backend
*/
const NOT_IMPLEMENTED = -501;
/**
* actions that user backends can define
*/
const CREATE_USER = 1; // 1 << 0
const SET_PASSWORD = 16; // 1 << 4
const CHECK_PASSWORD = 256; // 1 << 8
const GET_HOME = 4096; // 1 << 12
const GET_DISPLAYNAME = 65536; // 1 << 16
const SET_DISPLAYNAME = 1048576; // 1 << 20
const PROVIDE_AVATAR = 16777216; // 1 << 24
const COUNT_USERS = 268435456; // 1 << 28
protected $possibleActions = array(
self::CREATE_USER => 'createUser',
self::SET_PASSWORD => 'setPassword',
self::CHECK_PASSWORD => 'checkPassword',
self::GET_HOME => 'getHome',
self::GET_DISPLAYNAME => 'getDisplayName',
self::SET_DISPLAYNAME => 'setDisplayName',
self::PROVIDE_AVATAR => 'canChangeAvatar',
self::COUNT_USERS => 'countUsers',
);
/**
* Get all supported actions
* @return int bitwise-or'ed actions
*
* Returns the supported actions as int to be
* compared with self::CREATE_USER etc.
*/
public function getSupportedActions() {
$actions = 0;
foreach($this->possibleActions AS $action => $methodName) {
if(method_exists($this, $methodName)) {
$actions |= $action;
}
}
return $actions;
}
/**
* Check if backend implements actions
* @param int $actions bitwise-or'ed actions
* @return boolean
*
* Returns the supported actions as int to be
* compared with self::CREATE_USER etc.
*/
public function implementsActions($actions) {
return (bool)($this->getSupportedActions() & $actions);
}
/**
* delete a user
* @param string $uid The username of the user to delete
* @return bool
*
* Deletes a user
*/
public function deleteUser( $uid ) {
return false;
}
/**
* 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 = null, $offset = null) {
return array();
}
/**
* check if a user exists
* @param string $uid the username
* @return boolean
*/
public function userExists($uid) {
return false;
}
/**
* get the user's home directory
* @param string $uid the username
* @return boolean
*/
public function getHome($uid) {
return false;
}
/**
* get display name of the user
* @param string $uid user ID of the user
* @return string display name
*/
public function getDisplayName($uid) {
return $uid;
}
/**
* 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) {
$displayNames = array();
$users = $this->getUsers($search, $limit, $offset);
foreach ( $users as $user) {
$displayNames[$user] = $user;
}
return $displayNames;
}
/**
* Check if a user list is available or not
* @return boolean if users can be listed or not
*/
public function hasUserListings() {
return false;
}
}