382 lines
10 KiB
PHP
382 lines
10 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author adrien <adrien.waksberg@believedigital.com>
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* @author Aldo "xoen" Giambelluca <xoen@xoen.org>
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Bjoern Schiessle <bjoern@schiessle.org>
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* @author Björn Schießle <bjoern@schiessle.org>
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* @author fabian <fabian@web2.0-apps.de>
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* @author Georg Ehrke <georg@owncloud.com>
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* @author Jakob Sack <mail@jakobsack.de>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Michael Gapczynski <GapczynskiM@gmail.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author nishiki <nishiki@yaegashi.fr>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program 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 License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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/*
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*
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* The following SQL statement is just a help for developers and will not be
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* executed!
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*
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* CREATE TABLE `users` (
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* `uid` varchar(64) COLLATE utf8_unicode_ci NOT NULL,
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* `password` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
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* PRIMARY KEY (`uid`)
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* ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
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*
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*/
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namespace OC\User;
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use OC\Cache\CappedMemoryCache;
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use OCP\IUserBackend;
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use OCP\Util;
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use Symfony\Component\EventDispatcher\EventDispatcher;
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use Symfony\Component\EventDispatcher\GenericEvent;
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/**
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* Class for user management in a SQL Database (e.g. MySQL, SQLite)
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*/
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class Database extends Backend implements IUserBackend {
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/** @var CappedMemoryCache */
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private $cache;
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/** @var EventDispatcher */
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private $eventDispatcher;
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/**
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* \OC\User\Database constructor.
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*
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* @param EventDispatcher $eventDispatcher
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*/
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public function __construct($eventDispatcher = null) {
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$this->cache = new CappedMemoryCache();
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$this->eventDispatcher = $eventDispatcher ? $eventDispatcher : \OC::$server->getEventDispatcher();
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}
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/**
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* Create a new user
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* @param string $uid The username of the user to create
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* @param string $password The password of the new user
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* @return bool
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*
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* Creates a new user. Basic checking of username is done in OC_User
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* itself, not in its subclasses.
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*/
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public function createUser($uid, $password) {
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if (!$this->userExists($uid)) {
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$event = new GenericEvent($password);
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$this->eventDispatcher->dispatch('OCP\PasswordPolicy::validate', $event);
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$query = \OC_DB::prepare('INSERT INTO `*PREFIX*users` ( `uid`, `password` ) VALUES( ?, ? )');
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$result = $query->execute(array($uid, \OC::$server->getHasher()->hash($password)));
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// Clear cache
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unset($this->cache[$uid]);
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return $result ? true : false;
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}
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return false;
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}
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/**
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* 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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// Delete user-group-relation
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$query = \OC_DB::prepare('DELETE FROM `*PREFIX*users` WHERE `uid` = ?');
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$result = $query->execute(array($uid));
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if (isset($this->cache[$uid])) {
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unset($this->cache[$uid]);
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}
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return $result ? true : false;
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}
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/**
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* Set password
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* @param string $uid The username
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* @param string $password The new password
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* @return bool
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*
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* Change the password of a user
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*/
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public function setPassword($uid, $password) {
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if ($this->userExists($uid)) {
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$event = new GenericEvent($password);
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$this->eventDispatcher->dispatch('OCP\PasswordPolicy::validate', $event);
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$query = \OC_DB::prepare('UPDATE `*PREFIX*users` SET `password` = ? WHERE `uid` = ?');
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$result = $query->execute(array(\OC::$server->getHasher()->hash($password), $uid));
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return $result ? true : false;
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}
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return false;
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}
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/**
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* Set display name
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* @param string $uid The username
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* @param string $displayName The new display name
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* @return bool
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*
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* Change the display name of a user
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*/
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public function setDisplayName($uid, $displayName) {
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if ($this->userExists($uid)) {
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$query = \OC_DB::prepare('UPDATE `*PREFIX*users` SET `displayname` = ? WHERE LOWER(`uid`) = LOWER(?)');
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$query->execute(array($displayName, $uid));
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$this->cache[$uid]['displayname'] = $displayName;
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return true;
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}
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return false;
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}
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/**
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* 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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$this->loadUser($uid);
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return empty($this->cache[$uid]['displayname']) ? $uid : $this->cache[$uid]['displayname'];
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}
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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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* @param string $search
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* @param string|null $limit
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* @param string|null $offset
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* @return array an array of all displayNames (value) and the corresponding uids (key)
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*/
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public function getDisplayNames($search = '', $limit = null, $offset = null) {
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$parameters = [];
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$searchLike = '';
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if ($search !== '') {
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$parameters[] = '%' . \OC::$server->getDatabaseConnection()->escapeLikeParameter($search) . '%';
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$parameters[] = '%' . \OC::$server->getDatabaseConnection()->escapeLikeParameter($search) . '%';
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$searchLike = ' WHERE LOWER(`displayname`) LIKE LOWER(?) OR '
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. 'LOWER(`uid`) LIKE LOWER(?)';
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}
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$displayNames = array();
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$query = \OC_DB::prepare('SELECT `uid`, `displayname` FROM `*PREFIX*users`'
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. $searchLike .' ORDER BY `uid` ASC', $limit, $offset);
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$result = $query->execute($parameters);
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while ($row = $result->fetchRow()) {
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$displayNames[$row['uid']] = $row['displayname'];
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}
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return $displayNames;
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}
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/**
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* Check if the password is correct
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* @param string $uid The username
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* @param string $password The password
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* @return string
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*
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* Check if the password is correct without logging in the user
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* returns the user id or false
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*/
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public function checkPassword($uid, $password) {
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$query = \OC_DB::prepare('SELECT `uid`, `password` FROM `*PREFIX*users` WHERE LOWER(`uid`) = LOWER(?)');
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$result = $query->execute(array($uid));
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$row = $result->fetchRow();
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if ($row) {
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$storedHash = $row['password'];
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$newHash = '';
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if(\OC::$server->getHasher()->verify($password, $storedHash, $newHash)) {
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if(!empty($newHash)) {
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$this->setPassword($uid, $password);
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}
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return $row['uid'];
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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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* Load an user in the cache
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* @param string $uid the username
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* @return boolean true if user was found, false otherwise
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*/
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private function loadUser($uid) {
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if (!isset($this->cache[$uid])) {
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//guests $uid could be NULL or ''
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if ($uid === null || $uid === '') {
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$this->cache[$uid]=false;
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return true;
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}
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$query = \OC_DB::prepare('SELECT `uid`, `displayname` FROM `*PREFIX*users` WHERE LOWER(`uid`) = LOWER(?)');
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$result = $query->execute(array($uid));
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if ($result === false) {
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Util::writeLog('core', \OC_DB::getErrorMessage(), Util::ERROR);
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return false;
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}
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$this->cache[$uid] = false;
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// "uid" is primary key, so there can only be a single result
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if ($row = $result->fetchRow()) {
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$this->cache[$uid]['uid'] = $row['uid'];
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$this->cache[$uid]['displayname'] = $row['displayname'];
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$result->closeCursor();
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} else {
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$result->closeCursor();
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return false;
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}
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}
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return true;
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}
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/**
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* Get a list of all users
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*
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* @param string $search
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* @param null|int $limit
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* @param null|int $offset
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* @return string[] an array of all uids
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*/
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public function getUsers($search = '', $limit = null, $offset = null) {
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$parameters = [];
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$searchLike = '';
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if ($search !== '') {
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$parameters[] = '%' . \OC::$server->getDatabaseConnection()->escapeLikeParameter($search) . '%';
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$searchLike = ' WHERE LOWER(`uid`) LIKE LOWER(?)';
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}
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$query = \OC_DB::prepare('SELECT `uid` FROM `*PREFIX*users`' . $searchLike . ' ORDER BY `uid` ASC', $limit, $offset);
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$result = $query->execute($parameters);
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$users = array();
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while ($row = $result->fetchRow()) {
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$users[] = $row['uid'];
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}
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return $users;
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}
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/**
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* 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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$this->loadUser($uid);
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return $this->cache[$uid] !== false;
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}
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/**
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* get the user's home directory
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* @param string $uid the username
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* @return string|false
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*/
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public function getHome($uid) {
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if ($this->userExists($uid)) {
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return \OC::$server->getConfig()->getSystemValue("datadirectory", \OC::$SERVERROOT . "/data") . '/' . $uid;
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}
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return false;
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}
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/**
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* @return bool
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*/
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public function hasUserListings() {
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return true;
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}
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/**
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* counts the users in the database
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*
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* @return int|bool
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*/
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public function countUsers() {
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$query = \OC_DB::prepare('SELECT COUNT(*) FROM `*PREFIX*users`');
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$result = $query->execute();
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if ($result === false) {
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Util::writeLog('core', \OC_DB::getErrorMessage(), Util::ERROR);
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return false;
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}
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return $result->fetchOne();
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}
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/**
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* returns the username for the given login name in the correct casing
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*
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* @param string $loginName
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* @return string|false
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*/
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public function loginName2UserName($loginName) {
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if ($this->userExists($loginName)) {
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return $this->cache[$loginName]['uid'];
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}
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return false;
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}
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/**
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* Backend name to be shown in user management
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* @return string the name of the backend to be shown
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*/
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public function getBackendName(){
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return 'Database';
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}
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public static function preLoginNameUsedAsUserName($param) {
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if(!isset($param['uid'])) {
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throw new \Exception('key uid is expected to be set in $param');
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}
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$backends = \OC::$server->getUserManager()->getBackends();
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foreach ($backends as $backend) {
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if ($backend instanceof Database) {
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/** @var \OC\User\Database $backend */
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$uid = $backend->loginName2UserName($param['uid']);
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if ($uid !== false) {
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$param['uid'] = $uid;
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return;
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}
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}
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}
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}
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}
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