1857 lines
60 KiB
PHP
1857 lines
60 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 Aaron Wood <aaronjwood@gmail.com>
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* @author Alexander Bergolth <leo@strike.wu.ac.at>
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* @author Andreas Fischer <bantu@owncloud.com>
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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 Benjamin Diele <benjamin@diele.be>
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* @author Christopher Schäpers <kondou@ts.unde.re>
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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 Lorenzo M. Catucci <lorenzo@sancho.ccd.uniroma2.it>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Lyonel Vincent <lyonel@ezix.org>
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* @author Mario Kolling <mario.kolling@serpro.gov.br>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Nicolas Grekas <nicolas.grekas@gmail.com>
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* @author Ralph Krimmel <rkrimme1@gwdg.de>
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* @author Renaud Fortier <Renaud.Fortier@fsaa.ulaval.ca>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Roger Szabo <roger.szabo@web.de>
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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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namespace OCA\User_LDAP;
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use OC\HintException;
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use OCA\User_LDAP\Exceptions\ConstraintViolationException;
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use OCA\User_LDAP\User\IUserTools;
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use OCA\User_LDAP\User\Manager;
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use OCA\User_LDAP\User\OfflineUser;
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use OCA\User_LDAP\Mapping\AbstractMapping;
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/**
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* Class Access
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* @package OCA\User_LDAP
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*/
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class Access extends LDAPUtility implements IUserTools {
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/**
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* @var \OCA\User_LDAP\Connection
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*/
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public $connection;
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/** @var Manager */
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public $userManager;
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//never ever check this var directly, always use getPagedSearchResultState
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protected $pagedSearchedSuccessful;
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/**
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* @var string[] $cookies an array of returned Paged Result cookies
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*/
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protected $cookies = array();
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/**
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* @var string $lastCookie the last cookie returned from a Paged Results
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* operation, defaults to an empty string
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*/
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protected $lastCookie = '';
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/**
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* @var AbstractMapping $userMapper
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*/
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protected $userMapper;
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/**
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* @var AbstractMapping $userMapper
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*/
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protected $groupMapper;
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/**
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* @var \OCA\User_LDAP\Helper
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*/
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private $helper;
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public function __construct(Connection $connection, ILDAPWrapper $ldap,
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Manager $userManager, Helper $helper) {
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parent::__construct($ldap);
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$this->connection = $connection;
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$this->userManager = $userManager;
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$this->userManager->setLdapAccess($this);
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$this->helper = $helper;
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}
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/**
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* sets the User Mapper
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* @param AbstractMapping $mapper
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*/
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public function setUserMapper(AbstractMapping $mapper) {
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$this->userMapper = $mapper;
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}
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/**
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* returns the User Mapper
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* @throws \Exception
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* @return AbstractMapping
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*/
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public function getUserMapper() {
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if(is_null($this->userMapper)) {
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throw new \Exception('UserMapper was not assigned to this Access instance.');
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}
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return $this->userMapper;
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}
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/**
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* sets the Group Mapper
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* @param AbstractMapping $mapper
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*/
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public function setGroupMapper(AbstractMapping $mapper) {
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$this->groupMapper = $mapper;
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}
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/**
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* returns the Group Mapper
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* @throws \Exception
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* @return AbstractMapping
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*/
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public function getGroupMapper() {
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if(is_null($this->groupMapper)) {
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throw new \Exception('GroupMapper was not assigned to this Access instance.');
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}
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return $this->groupMapper;
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}
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/**
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* @return bool
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*/
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private function checkConnection() {
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return ($this->connection instanceof Connection);
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}
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/**
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* returns the Connection instance
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* @return \OCA\User_LDAP\Connection
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*/
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public function getConnection() {
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return $this->connection;
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}
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/**
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* reads a given attribute for an LDAP record identified by a DN
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* @param string $dn the record in question
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* @param string $attr the attribute that shall be retrieved
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* if empty, just check the record's existence
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* @param string $filter
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* @return array|false an array of values on success or an empty
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* array if $attr is empty, false otherwise
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*/
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public function readAttribute($dn, $attr, $filter = 'objectClass=*') {
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if(!$this->checkConnection()) {
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\OCP\Util::writeLog('user_ldap',
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'No LDAP Connector assigned, access impossible for readAttribute.',
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\OCP\Util::WARN);
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return false;
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}
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$cr = $this->connection->getConnectionResource();
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if(!$this->ldap->isResource($cr)) {
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//LDAP not available
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\OCP\Util::writeLog('user_ldap', 'LDAP resource not available.', \OCP\Util::DEBUG);
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return false;
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}
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//Cancel possibly running Paged Results operation, otherwise we run in
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//LDAP protocol errors
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$this->abandonPagedSearch();
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// openLDAP requires that we init a new Paged Search. Not needed by AD,
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// but does not hurt either.
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$pagingSize = intval($this->connection->ldapPagingSize);
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// 0 won't result in replies, small numbers may leave out groups
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// (cf. #12306), 500 is default for paging and should work everywhere.
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$maxResults = $pagingSize > 20 ? $pagingSize : 500;
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$attr = mb_strtolower($attr, 'UTF-8');
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// the actual read attribute later may contain parameters on a ranged
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// request, e.g. member;range=99-199. Depends on server reply.
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$attrToRead = $attr;
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$values = [];
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$isRangeRequest = false;
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do {
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$result = $this->executeRead($cr, $dn, $attrToRead, $filter, $maxResults);
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if(is_bool($result)) {
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// when an exists request was run and it was successful, an empty
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// array must be returned
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return $result ? [] : false;
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}
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if (!$isRangeRequest) {
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$values = $this->extractAttributeValuesFromResult($result, $attr);
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if (!empty($values)) {
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return $values;
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}
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}
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$isRangeRequest = false;
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$result = $this->extractRangeData($result, $attr);
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if (!empty($result)) {
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$normalizedResult = $this->extractAttributeValuesFromResult(
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[ $attr => $result['values'] ],
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$attr
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);
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$values = array_merge($values, $normalizedResult);
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if($result['rangeHigh'] === '*') {
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// when server replies with * as high range value, there are
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// no more results left
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return $values;
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} else {
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$low = $result['rangeHigh'] + 1;
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$attrToRead = $result['attributeName'] . ';range=' . $low . '-*';
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$isRangeRequest = true;
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}
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}
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} while($isRangeRequest);
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\OCP\Util::writeLog('user_ldap', 'Requested attribute '.$attr.' not found for '.$dn, \OCP\Util::DEBUG);
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return false;
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}
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/**
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* Runs an read operation against LDAP
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*
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* @param resource $cr the LDAP connection
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* @param string $dn
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* @param string $attribute
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* @param string $filter
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* @param int $maxResults
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* @return array|bool false if there was any error, true if an exists check
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* was performed and the requested DN found, array with the
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* returned data on a successful usual operation
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*/
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public function executeRead($cr, $dn, $attribute, $filter, $maxResults) {
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$this->initPagedSearch($filter, array($dn), array($attribute), $maxResults, 0);
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$dn = $this->helper->DNasBaseParameter($dn);
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$rr = @$this->ldap->read($cr, $dn, $filter, array($attribute));
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if (!$this->ldap->isResource($rr)) {
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if ($attribute !== '') {
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//do not throw this message on userExists check, irritates
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\OCP\Util::writeLog('user_ldap', 'readAttribute failed for DN ' . $dn, \OCP\Util::DEBUG);
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}
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//in case an error occurs , e.g. object does not exist
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return false;
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}
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if ($attribute === '' && ($filter === 'objectclass=*' || $this->ldap->countEntries($cr, $rr) === 1)) {
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\OCP\Util::writeLog('user_ldap', 'readAttribute: ' . $dn . ' found', \OCP\Util::DEBUG);
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return true;
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}
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$er = $this->ldap->firstEntry($cr, $rr);
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if (!$this->ldap->isResource($er)) {
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//did not match the filter, return false
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return false;
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}
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//LDAP attributes are not case sensitive
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$result = \OCP\Util::mb_array_change_key_case(
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$this->ldap->getAttributes($cr, $er), MB_CASE_LOWER, 'UTF-8');
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return $result;
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}
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/**
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* Normalizes a result grom getAttributes(), i.e. handles DNs and binary
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* data if present.
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*
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* @param array $result from ILDAPWrapper::getAttributes()
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* @param string $attribute the attribute name that was read
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* @return string[]
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*/
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public function extractAttributeValuesFromResult($result, $attribute) {
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$values = [];
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if(isset($result[$attribute]) && $result[$attribute]['count'] > 0) {
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$lowercaseAttribute = strtolower($attribute);
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for($i=0;$i<$result[$attribute]['count'];$i++) {
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if($this->resemblesDN($attribute)) {
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$values[] = $this->helper->sanitizeDN($result[$attribute][$i]);
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} elseif($lowercaseAttribute === 'objectguid' || $lowercaseAttribute === 'guid') {
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$values[] = $this->convertObjectGUID2Str($result[$attribute][$i]);
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} else {
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$values[] = $result[$attribute][$i];
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}
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}
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}
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return $values;
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}
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/**
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* Attempts to find ranged data in a getAttribute results and extracts the
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* returned values as well as information on the range and full attribute
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* name for further processing.
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*
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* @param array $result from ILDAPWrapper::getAttributes()
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* @param string $attribute the attribute name that was read. Without ";range=…"
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* @return array If a range was detected with keys 'values', 'attributeName',
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* 'attributeFull' and 'rangeHigh', otherwise empty.
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*/
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public function extractRangeData($result, $attribute) {
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$keys = array_keys($result);
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foreach($keys as $key) {
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if($key !== $attribute && strpos($key, $attribute) === 0) {
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$queryData = explode(';', $key);
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if(strpos($queryData[1], 'range=') === 0) {
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$high = substr($queryData[1], 1 + strpos($queryData[1], '-'));
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$data = [
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'values' => $result[$key],
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'attributeName' => $queryData[0],
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'attributeFull' => $key,
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'rangeHigh' => $high,
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];
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return $data;
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}
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}
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}
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return [];
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}
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/**
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* Set password for an LDAP user identified by a DN
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*
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* @param string $userDN the user in question
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* @param string $password the new password
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* @return bool
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* @throws HintException
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* @throws \Exception
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*/
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public function setPassword($userDN, $password) {
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if(intval($this->connection->turnOnPasswordChange) !== 1) {
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throw new \Exception('LDAP password changes are disabled.');
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}
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$cr = $this->connection->getConnectionResource();
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if(!$this->ldap->isResource($cr)) {
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//LDAP not available
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\OCP\Util::writeLog('user_ldap', 'LDAP resource not available.', \OCP\Util::DEBUG);
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return false;
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}
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try {
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return $this->ldap->modReplace($cr, $userDN, $password);
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} catch(ConstraintViolationException $e) {
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throw new HintException('Password change rejected.', \OC::$server->getL10N('user_ldap')->t('Password change rejected. Hint: ').$e->getMessage(), $e->getCode());
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}
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}
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/**
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* checks whether the given attributes value is probably a DN
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* @param string $attr the attribute in question
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* @return boolean if so true, otherwise false
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*/
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private function resemblesDN($attr) {
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$resemblingAttributes = array(
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'dn',
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'uniquemember',
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'member',
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// memberOf is an "operational" attribute, without a definition in any RFC
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'memberof'
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);
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return in_array($attr, $resemblingAttributes);
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}
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/**
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* checks whether the given string is probably a DN
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* @param string $string
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* @return boolean
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*/
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public function stringResemblesDN($string) {
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$r = $this->ldap->explodeDN($string, 0);
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// if exploding a DN succeeds and does not end up in
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// an empty array except for $r[count] being 0.
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return (is_array($r) && count($r) > 1);
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}
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/**
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* returns a DN-string that is cleaned from not domain parts, e.g.
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* cn=foo,cn=bar,dc=foobar,dc=server,dc=org
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* becomes dc=foobar,dc=server,dc=org
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* @param string $dn
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* @return string
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*/
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public function getDomainDNFromDN($dn) {
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$allParts = $this->ldap->explodeDN($dn, 0);
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if($allParts === false) {
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//not a valid DN
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return '';
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}
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$domainParts = array();
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$dcFound = false;
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foreach($allParts as $part) {
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if(!$dcFound && strpos($part, 'dc=') === 0) {
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$dcFound = true;
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}
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if($dcFound) {
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$domainParts[] = $part;
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}
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}
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$domainDN = implode(',', $domainParts);
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return $domainDN;
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}
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/**
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* returns the LDAP DN for the given internal Nextcloud name of the group
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* @param string $name the Nextcloud name in question
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* @return string|false LDAP DN on success, otherwise false
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*/
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public function groupname2dn($name) {
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return $this->groupMapper->getDNByName($name);
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}
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/**
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* returns the LDAP DN for the given internal Nextcloud name of the user
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* @param string $name the Nextcloud name in question
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* @return string|false with the LDAP DN on success, otherwise false
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*/
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public function username2dn($name) {
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$fdn = $this->userMapper->getDNByName($name);
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//Check whether the DN belongs to the Base, to avoid issues on multi-
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//server setups
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if(is_string($fdn) && $this->isDNPartOfBase($fdn, $this->connection->ldapBaseUsers)) {
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return $fdn;
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}
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return false;
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}
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/**
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* returns the internal Nextcloud name for the given LDAP DN of the group, false on DN outside of search DN or failure
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* @param string $fdn the dn of the group object
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* @param string $ldapName optional, the display name of the object
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* @return string|false with the name to use in Nextcloud, false on DN outside of search DN
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*/
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public function dn2groupname($fdn, $ldapName = null) {
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//To avoid bypassing the base DN settings under certain circumstances
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//with the group support, check whether the provided DN matches one of
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//the given Bases
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if(!$this->isDNPartOfBase($fdn, $this->connection->ldapBaseGroups)) {
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return false;
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}
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return $this->dn2ocname($fdn, $ldapName, false);
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}
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/**
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* accepts an array of group DNs and tests whether they match the user
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* filter by doing read operations against the group entries. Returns an
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* array of DNs that match the filter.
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*
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* @param string[] $groupDNs
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* @return string[]
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*/
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public function groupsMatchFilter($groupDNs) {
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$validGroupDNs = [];
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foreach($groupDNs as $dn) {
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$cacheKey = 'groupsMatchFilter-'.$dn;
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$groupMatchFilter = $this->connection->getFromCache($cacheKey);
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if(!is_null($groupMatchFilter)) {
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if($groupMatchFilter) {
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$validGroupDNs[] = $dn;
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}
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continue;
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}
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// Check the base DN first. If this is not met already, we don't
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// need to ask the server at all.
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if(!$this->isDNPartOfBase($dn, $this->connection->ldapBaseGroups)) {
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$this->connection->writeToCache($cacheKey, false);
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continue;
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}
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$result = $this->readAttribute($dn, 'cn', $this->connection->ldapGroupFilter);
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if(is_array($result)) {
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$this->connection->writeToCache($cacheKey, true);
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$validGroupDNs[] = $dn;
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} else {
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$this->connection->writeToCache($cacheKey, false);
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}
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}
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return $validGroupDNs;
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}
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/**
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* returns the internal Nextcloud name for the given LDAP DN of the user, false on DN outside of search DN or failure
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* @param string $dn the dn of the user object
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* @param string $ldapName optional, the display name of the object
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* @return string|false with with the name to use in Nextcloud
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*/
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public function dn2username($fdn, $ldapName = null) {
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//To avoid bypassing the base DN settings under certain circumstances
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//with the group support, check whether the provided DN matches one of
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//the given Bases
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if(!$this->isDNPartOfBase($fdn, $this->connection->ldapBaseUsers)) {
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return false;
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}
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return $this->dn2ocname($fdn, $ldapName, true);
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|
}
|
|
|
|
/**
|
|
* returns an internal Nextcloud name for the given LDAP DN, false on DN outside of search DN
|
|
* @param string $dn the dn of the user object
|
|
* @param string $ldapName optional, the display name of the object
|
|
* @param bool $isUser optional, whether it is a user object (otherwise group assumed)
|
|
* @return string|false with with the name to use in Nextcloud
|
|
*/
|
|
public function dn2ocname($fdn, $ldapName = null, $isUser = true) {
|
|
if($isUser) {
|
|
$mapper = $this->getUserMapper();
|
|
$nameAttribute = $this->connection->ldapUserDisplayName;
|
|
} else {
|
|
$mapper = $this->getGroupMapper();
|
|
$nameAttribute = $this->connection->ldapGroupDisplayName;
|
|
}
|
|
|
|
//let's try to retrieve the Nextcloud name from the mappings table
|
|
$ocName = $mapper->getNameByDN($fdn);
|
|
if(is_string($ocName)) {
|
|
return $ocName;
|
|
}
|
|
|
|
//second try: get the UUID and check if it is known. Then, update the DN and return the name.
|
|
$uuid = $this->getUUID($fdn, $isUser);
|
|
if(is_string($uuid)) {
|
|
$ocName = $mapper->getNameByUUID($uuid);
|
|
if(is_string($ocName)) {
|
|
$mapper->setDNbyUUID($fdn, $uuid);
|
|
return $ocName;
|
|
}
|
|
} else {
|
|
//If the UUID can't be detected something is foul.
|
|
\OCP\Util::writeLog('user_ldap', 'Cannot determine UUID for '.$fdn.'. Skipping.', \OCP\Util::INFO);
|
|
return false;
|
|
}
|
|
|
|
if(is_null($ldapName)) {
|
|
$ldapName = $this->readAttribute($fdn, $nameAttribute);
|
|
if(!isset($ldapName[0]) && empty($ldapName[0])) {
|
|
\OCP\Util::writeLog('user_ldap', 'No or empty name for '.$fdn.'.', \OCP\Util::INFO);
|
|
return false;
|
|
}
|
|
$ldapName = $ldapName[0];
|
|
}
|
|
|
|
if($isUser) {
|
|
$usernameAttribute = strval($this->connection->ldapExpertUsernameAttr);
|
|
if ($usernameAttribute !== '') {
|
|
$username = $this->readAttribute($fdn, $usernameAttribute);
|
|
$username = $username[0];
|
|
} else {
|
|
$username = $uuid;
|
|
}
|
|
$intName = $this->sanitizeUsername($username);
|
|
} else {
|
|
$intName = $ldapName;
|
|
}
|
|
|
|
//a new user/group! Add it only if it doesn't conflict with other backend's users or existing groups
|
|
//disabling Cache is required to avoid that the new user is cached as not-existing in fooExists check
|
|
//NOTE: mind, disabling cache affects only this instance! Using it
|
|
// outside of core user management will still cache the user as non-existing.
|
|
$originalTTL = $this->connection->ldapCacheTTL;
|
|
$this->connection->setConfiguration(array('ldapCacheTTL' => 0));
|
|
if(($isUser && !\OCP\User::userExists($intName))
|
|
|| (!$isUser && !\OC::$server->getGroupManager()->groupExists($intName))) {
|
|
if($mapper->map($fdn, $intName, $uuid)) {
|
|
$this->connection->setConfiguration(array('ldapCacheTTL' => $originalTTL));
|
|
return $intName;
|
|
}
|
|
}
|
|
$this->connection->setConfiguration(array('ldapCacheTTL' => $originalTTL));
|
|
|
|
$altName = $this->createAltInternalOwnCloudName($intName, $isUser);
|
|
if(is_string($altName) && $mapper->map($fdn, $altName, $uuid)) {
|
|
return $altName;
|
|
}
|
|
|
|
//if everything else did not help..
|
|
\OCP\Util::writeLog('user_ldap', 'Could not create unique name for '.$fdn.'.', \OCP\Util::INFO);
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* gives back the user names as they are used ownClod internally
|
|
* @param array $ldapUsers as returned by fetchList()
|
|
* @return array an array with the user names to use in Nextcloud
|
|
*
|
|
* gives back the user names as they are used ownClod internally
|
|
*/
|
|
public function nextcloudUserNames($ldapUsers) {
|
|
return $this->ldap2NextcloudNames($ldapUsers, true);
|
|
}
|
|
|
|
/**
|
|
* gives back the group names as they are used ownClod internally
|
|
* @param array $ldapGroups as returned by fetchList()
|
|
* @return array an array with the group names to use in Nextcloud
|
|
*
|
|
* gives back the group names as they are used ownClod internally
|
|
*/
|
|
public function nextcloudGroupNames($ldapGroups) {
|
|
return $this->ldap2NextcloudNames($ldapGroups, false);
|
|
}
|
|
|
|
/**
|
|
* @param array $ldapObjects as returned by fetchList()
|
|
* @param bool $isUsers
|
|
* @return array
|
|
*/
|
|
private function ldap2NextcloudNames($ldapObjects, $isUsers) {
|
|
if($isUsers) {
|
|
$nameAttribute = $this->connection->ldapUserDisplayName;
|
|
$sndAttribute = $this->connection->ldapUserDisplayName2;
|
|
} else {
|
|
$nameAttribute = $this->connection->ldapGroupDisplayName;
|
|
}
|
|
$nextcloudNames = array();
|
|
|
|
foreach($ldapObjects as $ldapObject) {
|
|
$nameByLDAP = null;
|
|
if( isset($ldapObject[$nameAttribute])
|
|
&& is_array($ldapObject[$nameAttribute])
|
|
&& isset($ldapObject[$nameAttribute][0])
|
|
) {
|
|
// might be set, but not necessarily. if so, we use it.
|
|
$nameByLDAP = $ldapObject[$nameAttribute][0];
|
|
}
|
|
|
|
$ncName = $this->dn2ocname($ldapObject['dn'][0], $nameByLDAP, $isUsers);
|
|
if($ncName) {
|
|
$nextcloudNames[] = $ncName;
|
|
if($isUsers) {
|
|
//cache the user names so it does not need to be retrieved
|
|
//again later (e.g. sharing dialogue).
|
|
if(is_null($nameByLDAP)) {
|
|
continue;
|
|
}
|
|
$sndName = isset($ldapObject[$sndAttribute][0])
|
|
? $ldapObject[$sndAttribute][0] : '';
|
|
$this->cacheUserDisplayName($ncName, $nameByLDAP, $sndName);
|
|
}
|
|
}
|
|
}
|
|
return $nextcloudNames;
|
|
}
|
|
|
|
/**
|
|
* caches the user display name
|
|
* @param string $ocName the internal Nextcloud username
|
|
* @param string|false $home the home directory path
|
|
*/
|
|
public function cacheUserHome($ocName, $home) {
|
|
$cacheKey = 'getHome'.$ocName;
|
|
$this->connection->writeToCache($cacheKey, $home);
|
|
}
|
|
|
|
/**
|
|
* caches a user as existing
|
|
* @param string $ocName the internal Nextcloud username
|
|
*/
|
|
public function cacheUserExists($ocName) {
|
|
$this->connection->writeToCache('userExists'.$ocName, true);
|
|
}
|
|
|
|
/**
|
|
* caches the user display name
|
|
* @param string $ocName the internal Nextcloud username
|
|
* @param string $displayName the display name
|
|
* @param string $displayName2 the second display name
|
|
*/
|
|
public function cacheUserDisplayName($ocName, $displayName, $displayName2 = '') {
|
|
$user = $this->userManager->get($ocName);
|
|
if($user === null) {
|
|
return;
|
|
}
|
|
$displayName = $user->composeAndStoreDisplayName($displayName, $displayName2);
|
|
$cacheKeyTrunk = 'getDisplayName';
|
|
$this->connection->writeToCache($cacheKeyTrunk.$ocName, $displayName);
|
|
}
|
|
|
|
/**
|
|
* creates a unique name for internal Nextcloud use for users. Don't call it directly.
|
|
* @param string $name the display name of the object
|
|
* @return string|false with with the name to use in Nextcloud or false if unsuccessful
|
|
*
|
|
* Instead of using this method directly, call
|
|
* createAltInternalOwnCloudName($name, true)
|
|
*/
|
|
private function _createAltInternalOwnCloudNameForUsers($name) {
|
|
$attempts = 0;
|
|
//while loop is just a precaution. If a name is not generated within
|
|
//20 attempts, something else is very wrong. Avoids infinite loop.
|
|
while($attempts < 20){
|
|
$altName = $name . '_' . rand(1000,9999);
|
|
if(!\OCP\User::userExists($altName)) {
|
|
return $altName;
|
|
}
|
|
$attempts++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* creates a unique name for internal Nextcloud use for groups. Don't call it directly.
|
|
* @param string $name the display name of the object
|
|
* @return string|false with with the name to use in Nextcloud or false if unsuccessful.
|
|
*
|
|
* Instead of using this method directly, call
|
|
* createAltInternalOwnCloudName($name, false)
|
|
*
|
|
* Group names are also used as display names, so we do a sequential
|
|
* numbering, e.g. Developers_42 when there are 41 other groups called
|
|
* "Developers"
|
|
*/
|
|
private function _createAltInternalOwnCloudNameForGroups($name) {
|
|
$usedNames = $this->groupMapper->getNamesBySearch($name, "", '_%');
|
|
if(!($usedNames) || count($usedNames) === 0) {
|
|
$lastNo = 1; //will become name_2
|
|
} else {
|
|
natsort($usedNames);
|
|
$lastName = array_pop($usedNames);
|
|
$lastNo = intval(substr($lastName, strrpos($lastName, '_') + 1));
|
|
}
|
|
$altName = $name.'_'.strval($lastNo+1);
|
|
unset($usedNames);
|
|
|
|
$attempts = 1;
|
|
while($attempts < 21){
|
|
// Check to be really sure it is unique
|
|
// while loop is just a precaution. If a name is not generated within
|
|
// 20 attempts, something else is very wrong. Avoids infinite loop.
|
|
if(!\OC::$server->getGroupManager()->groupExists($altName)) {
|
|
return $altName;
|
|
}
|
|
$altName = $name . '_' . ($lastNo + $attempts);
|
|
$attempts++;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* creates a unique name for internal Nextcloud use.
|
|
* @param string $name the display name of the object
|
|
* @param boolean $isUser whether name should be created for a user (true) or a group (false)
|
|
* @return string|false with with the name to use in Nextcloud or false if unsuccessful
|
|
*/
|
|
private function createAltInternalOwnCloudName($name, $isUser) {
|
|
$originalTTL = $this->connection->ldapCacheTTL;
|
|
$this->connection->setConfiguration(array('ldapCacheTTL' => 0));
|
|
if($isUser) {
|
|
$altName = $this->_createAltInternalOwnCloudNameForUsers($name);
|
|
} else {
|
|
$altName = $this->_createAltInternalOwnCloudNameForGroups($name);
|
|
}
|
|
$this->connection->setConfiguration(array('ldapCacheTTL' => $originalTTL));
|
|
|
|
return $altName;
|
|
}
|
|
|
|
/**
|
|
* fetches a list of users according to a provided loginName and utilizing
|
|
* the login filter.
|
|
*
|
|
* @param string $loginName
|
|
* @param array $attributes optional, list of attributes to read
|
|
* @return array
|
|
*/
|
|
public function fetchUsersByLoginName($loginName, $attributes = array('dn')) {
|
|
$loginName = $this->escapeFilterPart($loginName);
|
|
$filter = str_replace('%uid', $loginName, $this->connection->ldapLoginFilter);
|
|
$users = $this->fetchListOfUsers($filter, $attributes);
|
|
return $users;
|
|
}
|
|
|
|
/**
|
|
* counts the number of users according to a provided loginName and
|
|
* utilizing the login filter.
|
|
*
|
|
* @param string $loginName
|
|
* @return array
|
|
*/
|
|
public function countUsersByLoginName($loginName) {
|
|
$loginName = $this->escapeFilterPart($loginName);
|
|
$filter = str_replace('%uid', $loginName, $this->connection->ldapLoginFilter);
|
|
$users = $this->countUsers($filter);
|
|
return $users;
|
|
}
|
|
|
|
/**
|
|
* @param string $filter
|
|
* @param string|string[] $attr
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return array
|
|
*/
|
|
public function fetchListOfUsers($filter, $attr, $limit = null, $offset = null) {
|
|
$ldapRecords = $this->searchUsers($filter, $attr, $limit, $offset);
|
|
$this->batchApplyUserAttributes($ldapRecords);
|
|
return $this->fetchList($ldapRecords, (count($attr) > 1));
|
|
}
|
|
|
|
/**
|
|
* provided with an array of LDAP user records the method will fetch the
|
|
* user object and requests it to process the freshly fetched attributes and
|
|
* and their values
|
|
* @param array $ldapRecords
|
|
*/
|
|
public function batchApplyUserAttributes(array $ldapRecords){
|
|
$displayNameAttribute = strtolower($this->connection->ldapUserDisplayName);
|
|
foreach($ldapRecords as $userRecord) {
|
|
if(!isset($userRecord[$displayNameAttribute])) {
|
|
// displayName is obligatory
|
|
continue;
|
|
}
|
|
$ocName = $this->dn2ocname($userRecord['dn'][0]);
|
|
if($ocName === false) {
|
|
continue;
|
|
}
|
|
$this->cacheUserExists($ocName);
|
|
$user = $this->userManager->get($ocName);
|
|
if($user instanceof OfflineUser) {
|
|
$user->unmark();
|
|
$user = $this->userManager->get($ocName);
|
|
}
|
|
if ($user !== null) {
|
|
$user->processAttributes($userRecord);
|
|
} else {
|
|
\OC::$server->getLogger()->debug(
|
|
"The ldap user manager returned null for $ocName",
|
|
['app'=>'user_ldap']
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $filter
|
|
* @param string|string[] $attr
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return array
|
|
*/
|
|
public function fetchListOfGroups($filter, $attr, $limit = null, $offset = null) {
|
|
return $this->fetchList($this->searchGroups($filter, $attr, $limit, $offset), (count($attr) > 1));
|
|
}
|
|
|
|
/**
|
|
* @param array $list
|
|
* @param bool $manyAttributes
|
|
* @return array
|
|
*/
|
|
private function fetchList($list, $manyAttributes) {
|
|
if(is_array($list)) {
|
|
if($manyAttributes) {
|
|
return $list;
|
|
} else {
|
|
$list = array_reduce($list, function($carry, $item) {
|
|
$attribute = array_keys($item)[0];
|
|
$carry[] = $item[$attribute][0];
|
|
return $carry;
|
|
}, array());
|
|
return array_unique($list, SORT_LOCALE_STRING);
|
|
}
|
|
}
|
|
|
|
//error cause actually, maybe throw an exception in future.
|
|
return array();
|
|
}
|
|
|
|
/**
|
|
* executes an LDAP search, optimized for Users
|
|
* @param string $filter the LDAP filter for the search
|
|
* @param string|string[] $attr optional, when a certain attribute shall be filtered out
|
|
* @param integer $limit
|
|
* @param integer $offset
|
|
* @return array with the search result
|
|
*
|
|
* Executes an LDAP search
|
|
*/
|
|
public function searchUsers($filter, $attr = null, $limit = null, $offset = null) {
|
|
return $this->search($filter, $this->connection->ldapBaseUsers, $attr, $limit, $offset);
|
|
}
|
|
|
|
/**
|
|
* @param string $filter
|
|
* @param string|string[] $attr
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return false|int
|
|
*/
|
|
public function countUsers($filter, $attr = array('dn'), $limit = null, $offset = null) {
|
|
return $this->count($filter, $this->connection->ldapBaseUsers, $attr, $limit, $offset);
|
|
}
|
|
|
|
/**
|
|
* executes an LDAP search, optimized for Groups
|
|
* @param string $filter the LDAP filter for the search
|
|
* @param string|string[] $attr optional, when a certain attribute shall be filtered out
|
|
* @param integer $limit
|
|
* @param integer $offset
|
|
* @return array with the search result
|
|
*
|
|
* Executes an LDAP search
|
|
*/
|
|
public function searchGroups($filter, $attr = null, $limit = null, $offset = null) {
|
|
return $this->search($filter, $this->connection->ldapBaseGroups, $attr, $limit, $offset);
|
|
}
|
|
|
|
/**
|
|
* returns the number of available groups
|
|
* @param string $filter the LDAP search filter
|
|
* @param string[] $attr optional
|
|
* @param int|null $limit
|
|
* @param int|null $offset
|
|
* @return int|bool
|
|
*/
|
|
public function countGroups($filter, $attr = array('dn'), $limit = null, $offset = null) {
|
|
return $this->count($filter, $this->connection->ldapBaseGroups, $attr, $limit, $offset);
|
|
}
|
|
|
|
/**
|
|
* returns the number of available objects on the base DN
|
|
*
|
|
* @param int|null $limit
|
|
* @param int|null $offset
|
|
* @return int|bool
|
|
*/
|
|
public function countObjects($limit = null, $offset = null) {
|
|
return $this->count('objectclass=*', $this->connection->ldapBase, array('dn'), $limit, $offset);
|
|
}
|
|
|
|
/**
|
|
* retrieved. Results will according to the order in the array.
|
|
* @param int $limit optional, maximum results to be counted
|
|
* @param int $offset optional, a starting point
|
|
* @return array|false array with the search result as first value and pagedSearchOK as
|
|
* second | false if not successful
|
|
*/
|
|
private function executeSearch($filter, $base, &$attr = null, $limit = null, $offset = null) {
|
|
if(!is_null($attr) && !is_array($attr)) {
|
|
$attr = array(mb_strtolower($attr, 'UTF-8'));
|
|
}
|
|
|
|
// See if we have a resource, in case not cancel with message
|
|
$cr = $this->connection->getConnectionResource();
|
|
if(!$this->ldap->isResource($cr)) {
|
|
// Seems like we didn't find any resource.
|
|
// Return an empty array just like before.
|
|
\OCP\Util::writeLog('user_ldap', 'Could not search, because resource is missing.', \OCP\Util::DEBUG);
|
|
return false;
|
|
}
|
|
|
|
//check whether paged search should be attempted
|
|
$pagedSearchOK = $this->initPagedSearch($filter, $base, $attr, intval($limit), $offset);
|
|
|
|
$linkResources = array_pad(array(), count($base), $cr);
|
|
$sr = $this->ldap->search($linkResources, $base, $filter, $attr);
|
|
$error = $this->ldap->errno($cr);
|
|
if(!is_array($sr) || $error !== 0) {
|
|
\OCP\Util::writeLog('user_ldap', 'Attempt for Paging? '.print_r($pagedSearchOK, true), \OCP\Util::ERROR);
|
|
return false;
|
|
}
|
|
|
|
return array($sr, $pagedSearchOK);
|
|
}
|
|
|
|
/**
|
|
* processes an LDAP paged search operation
|
|
* @param array $sr the array containing the LDAP search resources
|
|
* @param string $filter the LDAP filter for the search
|
|
* @param array $base an array containing the LDAP subtree(s) that shall be searched
|
|
* @param int $iFoundItems number of results in the search operation
|
|
* @param int $limit maximum results to be counted
|
|
* @param int $offset a starting point
|
|
* @param bool $pagedSearchOK whether a paged search has been executed
|
|
* @param bool $skipHandling required for paged search when cookies to
|
|
* prior results need to be gained
|
|
* @return bool cookie validity, true if we have more pages, false otherwise.
|
|
*/
|
|
private function processPagedSearchStatus($sr, $filter, $base, $iFoundItems, $limit, $offset, $pagedSearchOK, $skipHandling) {
|
|
$cookie = null;
|
|
if($pagedSearchOK) {
|
|
$cr = $this->connection->getConnectionResource();
|
|
foreach($sr as $key => $res) {
|
|
if($this->ldap->controlPagedResultResponse($cr, $res, $cookie)) {
|
|
$this->setPagedResultCookie($base[$key], $filter, $limit, $offset, $cookie);
|
|
}
|
|
}
|
|
|
|
//browsing through prior pages to get the cookie for the new one
|
|
if($skipHandling) {
|
|
return false;
|
|
}
|
|
// if count is bigger, then the server does not support
|
|
// paged search. Instead, he did a normal search. We set a
|
|
// flag here, so the callee knows how to deal with it.
|
|
if($iFoundItems <= $limit) {
|
|
$this->pagedSearchedSuccessful = true;
|
|
}
|
|
} else {
|
|
if(!is_null($limit)) {
|
|
\OCP\Util::writeLog('user_ldap', 'Paged search was not available', \OCP\Util::INFO);
|
|
}
|
|
}
|
|
/* ++ Fixing RHDS searches with pages with zero results ++
|
|
* Return cookie status. If we don't have more pages, with RHDS
|
|
* cookie is null, with openldap cookie is an empty string and
|
|
* to 386ds '0' is a valid cookie. Even if $iFoundItems == 0
|
|
*/
|
|
return !empty($cookie) || $cookie === '0';
|
|
}
|
|
|
|
/**
|
|
* executes an LDAP search, but counts the results only
|
|
* @param string $filter the LDAP filter for the search
|
|
* @param array $base an array containing the LDAP subtree(s) that shall be searched
|
|
* @param string|string[] $attr optional, array, one or more attributes that shall be
|
|
* retrieved. Results will according to the order in the array.
|
|
* @param int $limit optional, maximum results to be counted
|
|
* @param int $offset optional, a starting point
|
|
* @param bool $skipHandling indicates whether the pages search operation is
|
|
* completed
|
|
* @return int|false Integer or false if the search could not be initialized
|
|
*
|
|
*/
|
|
private function count($filter, $base, $attr = null, $limit = null, $offset = null, $skipHandling = false) {
|
|
\OCP\Util::writeLog('user_ldap', 'Count filter: '.print_r($filter, true), \OCP\Util::DEBUG);
|
|
|
|
$limitPerPage = intval($this->connection->ldapPagingSize);
|
|
if(!is_null($limit) && $limit < $limitPerPage && $limit > 0) {
|
|
$limitPerPage = $limit;
|
|
}
|
|
|
|
$counter = 0;
|
|
$count = null;
|
|
$this->connection->getConnectionResource();
|
|
|
|
do {
|
|
$search = $this->executeSearch($filter, $base, $attr,
|
|
$limitPerPage, $offset);
|
|
if($search === false) {
|
|
return $counter > 0 ? $counter : false;
|
|
}
|
|
list($sr, $pagedSearchOK) = $search;
|
|
|
|
/* ++ Fixing RHDS searches with pages with zero results ++
|
|
* countEntriesInSearchResults() method signature changed
|
|
* by removing $limit and &$hasHitLimit parameters
|
|
*/
|
|
$count = $this->countEntriesInSearchResults($sr);
|
|
$counter += $count;
|
|
|
|
$hasMorePages = $this->processPagedSearchStatus($sr, $filter, $base, $count, $limitPerPage,
|
|
$offset, $pagedSearchOK, $skipHandling);
|
|
$offset += $limitPerPage;
|
|
/* ++ Fixing RHDS searches with pages with zero results ++
|
|
* Continue now depends on $hasMorePages value
|
|
*/
|
|
$continue = $pagedSearchOK && $hasMorePages;
|
|
} while($continue && (is_null($limit) || $limit <= 0 || $limit > $counter));
|
|
|
|
return $counter;
|
|
}
|
|
|
|
/**
|
|
* @param array $searchResults
|
|
* @return int
|
|
*/
|
|
private function countEntriesInSearchResults($searchResults) {
|
|
$cr = $this->connection->getConnectionResource();
|
|
$counter = 0;
|
|
|
|
foreach($searchResults as $res) {
|
|
$count = intval($this->ldap->countEntries($cr, $res));
|
|
$counter += $count;
|
|
}
|
|
|
|
return $counter;
|
|
}
|
|
|
|
/**
|
|
* Executes an LDAP search
|
|
* @param string $filter the LDAP filter for the search
|
|
* @param array $base an array containing the LDAP subtree(s) that shall be searched
|
|
* @param string|string[] $attr optional, array, one or more attributes that shall be
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @param bool $skipHandling
|
|
* @return array with the search result
|
|
*/
|
|
private function search($filter, $base, $attr = null, $limit = null, $offset = null, $skipHandling = false) {
|
|
if($limit <= 0) {
|
|
//otherwise search will fail
|
|
$limit = null;
|
|
}
|
|
|
|
/* ++ Fixing RHDS searches with pages with zero results ++
|
|
* As we can have pages with zero results and/or pages with less
|
|
* than $limit results but with a still valid server 'cookie',
|
|
* loops through until we get $continue equals true and
|
|
* $findings['count'] < $limit
|
|
*/
|
|
$findings = array();
|
|
$savedoffset = $offset;
|
|
do {
|
|
$search = $this->executeSearch($filter, $base, $attr, $limit, $offset);
|
|
if($search === false) {
|
|
return array();
|
|
}
|
|
list($sr, $pagedSearchOK) = $search;
|
|
$cr = $this->connection->getConnectionResource();
|
|
|
|
if($skipHandling) {
|
|
//i.e. result do not need to be fetched, we just need the cookie
|
|
//thus pass 1 or any other value as $iFoundItems because it is not
|
|
//used
|
|
$this->processPagedSearchStatus($sr, $filter, $base, 1, $limit,
|
|
$offset, $pagedSearchOK,
|
|
$skipHandling);
|
|
return array();
|
|
}
|
|
|
|
foreach($sr as $res) {
|
|
$findings = array_merge($findings, $this->ldap->getEntries($cr , $res ));
|
|
}
|
|
|
|
$continue = $this->processPagedSearchStatus($sr, $filter, $base, $findings['count'],
|
|
$limit, $offset, $pagedSearchOK,
|
|
$skipHandling);
|
|
$offset += $limit;
|
|
} while ($continue && $pagedSearchOK && $findings['count'] < $limit);
|
|
// reseting offset
|
|
$offset = $savedoffset;
|
|
|
|
// if we're here, probably no connection resource is returned.
|
|
// to make Nextcloud behave nicely, we simply give back an empty array.
|
|
if(is_null($findings)) {
|
|
return array();
|
|
}
|
|
|
|
if(!is_null($attr)) {
|
|
$selection = array();
|
|
$i = 0;
|
|
foreach($findings as $item) {
|
|
if(!is_array($item)) {
|
|
continue;
|
|
}
|
|
$item = \OCP\Util::mb_array_change_key_case($item, MB_CASE_LOWER, 'UTF-8');
|
|
foreach($attr as $key) {
|
|
$key = mb_strtolower($key, 'UTF-8');
|
|
if(isset($item[$key])) {
|
|
if(is_array($item[$key]) && isset($item[$key]['count'])) {
|
|
unset($item[$key]['count']);
|
|
}
|
|
if($key !== 'dn') {
|
|
$selection[$i][$key] = $this->resemblesDN($key) ?
|
|
$this->helper->sanitizeDN($item[$key])
|
|
: $item[$key];
|
|
} else {
|
|
$selection[$i][$key] = [$this->helper->sanitizeDN($item[$key])];
|
|
}
|
|
}
|
|
|
|
}
|
|
$i++;
|
|
}
|
|
$findings = $selection;
|
|
}
|
|
//we slice the findings, when
|
|
//a) paged search unsuccessful, though attempted
|
|
//b) no paged search, but limit set
|
|
if((!$this->getPagedSearchResultState()
|
|
&& $pagedSearchOK)
|
|
|| (
|
|
!$pagedSearchOK
|
|
&& !is_null($limit)
|
|
)
|
|
) {
|
|
$findings = array_slice($findings, intval($offset), $limit);
|
|
}
|
|
return $findings;
|
|
}
|
|
|
|
/**
|
|
* @param string $name
|
|
* @return bool|mixed|string
|
|
*/
|
|
public function sanitizeUsername($name) {
|
|
if($this->connection->ldapIgnoreNamingRules) {
|
|
return $name;
|
|
}
|
|
|
|
// Transliteration
|
|
// latin characters to ASCII
|
|
$name = iconv('UTF-8', 'ASCII//TRANSLIT', $name);
|
|
|
|
// Replacements
|
|
$name = str_replace(' ', '_', $name);
|
|
|
|
// Every remaining disallowed characters will be removed
|
|
$name = preg_replace('/[^a-zA-Z0-9_.@-]/u', '', $name);
|
|
|
|
return $name;
|
|
}
|
|
|
|
/**
|
|
* escapes (user provided) parts for LDAP filter
|
|
* @param string $input, the provided value
|
|
* @param bool $allowAsterisk whether in * at the beginning should be preserved
|
|
* @return string the escaped string
|
|
*/
|
|
public function escapeFilterPart($input, $allowAsterisk = false) {
|
|
$asterisk = '';
|
|
if($allowAsterisk && strlen($input) > 0 && $input[0] === '*') {
|
|
$asterisk = '*';
|
|
$input = mb_substr($input, 1, null, 'UTF-8');
|
|
}
|
|
$search = array('*', '\\', '(', ')');
|
|
$replace = array('\\*', '\\\\', '\\(', '\\)');
|
|
return $asterisk . str_replace($search, $replace, $input);
|
|
}
|
|
|
|
/**
|
|
* combines the input filters with AND
|
|
* @param string[] $filters the filters to connect
|
|
* @return string the combined filter
|
|
*/
|
|
public function combineFilterWithAnd($filters) {
|
|
return $this->combineFilter($filters, '&');
|
|
}
|
|
|
|
/**
|
|
* combines the input filters with OR
|
|
* @param string[] $filters the filters to connect
|
|
* @return string the combined filter
|
|
* Combines Filter arguments with OR
|
|
*/
|
|
public function combineFilterWithOr($filters) {
|
|
return $this->combineFilter($filters, '|');
|
|
}
|
|
|
|
/**
|
|
* combines the input filters with given operator
|
|
* @param string[] $filters the filters to connect
|
|
* @param string $operator either & or |
|
|
* @return string the combined filter
|
|
*/
|
|
private function combineFilter($filters, $operator) {
|
|
$combinedFilter = '('.$operator;
|
|
foreach($filters as $filter) {
|
|
if ($filter !== '' && $filter[0] !== '(') {
|
|
$filter = '('.$filter.')';
|
|
}
|
|
$combinedFilter.=$filter;
|
|
}
|
|
$combinedFilter.=')';
|
|
return $combinedFilter;
|
|
}
|
|
|
|
/**
|
|
* creates a filter part for to perform search for users
|
|
* @param string $search the search term
|
|
* @return string the final filter part to use in LDAP searches
|
|
*/
|
|
public function getFilterPartForUserSearch($search) {
|
|
return $this->getFilterPartForSearch($search,
|
|
$this->connection->ldapAttributesForUserSearch,
|
|
$this->connection->ldapUserDisplayName);
|
|
}
|
|
|
|
/**
|
|
* creates a filter part for to perform search for groups
|
|
* @param string $search the search term
|
|
* @return string the final filter part to use in LDAP searches
|
|
*/
|
|
public function getFilterPartForGroupSearch($search) {
|
|
return $this->getFilterPartForSearch($search,
|
|
$this->connection->ldapAttributesForGroupSearch,
|
|
$this->connection->ldapGroupDisplayName);
|
|
}
|
|
|
|
/**
|
|
* creates a filter part for searches by splitting up the given search
|
|
* string into single words
|
|
* @param string $search the search term
|
|
* @param string[] $searchAttributes needs to have at least two attributes,
|
|
* otherwise it does not make sense :)
|
|
* @return string the final filter part to use in LDAP searches
|
|
* @throws \Exception
|
|
*/
|
|
private function getAdvancedFilterPartForSearch($search, $searchAttributes) {
|
|
if(!is_array($searchAttributes) || count($searchAttributes) < 2) {
|
|
throw new \Exception('searchAttributes must be an array with at least two string');
|
|
}
|
|
$searchWords = explode(' ', trim($search));
|
|
$wordFilters = array();
|
|
foreach($searchWords as $word) {
|
|
$word = $this->prepareSearchTerm($word);
|
|
//every word needs to appear at least once
|
|
$wordMatchOneAttrFilters = array();
|
|
foreach($searchAttributes as $attr) {
|
|
$wordMatchOneAttrFilters[] = $attr . '=' . $word;
|
|
}
|
|
$wordFilters[] = $this->combineFilterWithOr($wordMatchOneAttrFilters);
|
|
}
|
|
return $this->combineFilterWithAnd($wordFilters);
|
|
}
|
|
|
|
/**
|
|
* creates a filter part for searches
|
|
* @param string $search the search term
|
|
* @param string[]|null $searchAttributes
|
|
* @param string $fallbackAttribute a fallback attribute in case the user
|
|
* did not define search attributes. Typically the display name attribute.
|
|
* @return string the final filter part to use in LDAP searches
|
|
*/
|
|
private function getFilterPartForSearch($search, $searchAttributes, $fallbackAttribute) {
|
|
$filter = array();
|
|
$haveMultiSearchAttributes = (is_array($searchAttributes) && count($searchAttributes) > 0);
|
|
if($haveMultiSearchAttributes && strpos(trim($search), ' ') !== false) {
|
|
try {
|
|
return $this->getAdvancedFilterPartForSearch($search, $searchAttributes);
|
|
} catch(\Exception $e) {
|
|
\OCP\Util::writeLog(
|
|
'user_ldap',
|
|
'Creating advanced filter for search failed, falling back to simple method.',
|
|
\OCP\Util::INFO
|
|
);
|
|
}
|
|
}
|
|
|
|
$search = $this->prepareSearchTerm($search);
|
|
if(!is_array($searchAttributes) || count($searchAttributes) === 0) {
|
|
if ($fallbackAttribute === '') {
|
|
return '';
|
|
}
|
|
$filter[] = $fallbackAttribute . '=' . $search;
|
|
} else {
|
|
foreach($searchAttributes as $attribute) {
|
|
$filter[] = $attribute . '=' . $search;
|
|
}
|
|
}
|
|
if(count($filter) === 1) {
|
|
return '('.$filter[0].')';
|
|
}
|
|
return $this->combineFilterWithOr($filter);
|
|
}
|
|
|
|
/**
|
|
* returns the search term depending on whether we are allowed
|
|
* list users found by ldap with the current input appended by
|
|
* a *
|
|
* @return string
|
|
*/
|
|
private function prepareSearchTerm($term) {
|
|
$config = \OC::$server->getConfig();
|
|
|
|
$allowEnum = $config->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes');
|
|
|
|
$result = $term;
|
|
if ($term === '') {
|
|
$result = '*';
|
|
} else if ($allowEnum !== 'no') {
|
|
$result = $term . '*';
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* returns the filter used for counting users
|
|
* @return string
|
|
*/
|
|
public function getFilterForUserCount() {
|
|
$filter = $this->combineFilterWithAnd(array(
|
|
$this->connection->ldapUserFilter,
|
|
$this->connection->ldapUserDisplayName . '=*'
|
|
));
|
|
|
|
return $filter;
|
|
}
|
|
|
|
/**
|
|
* @param string $name
|
|
* @param string $password
|
|
* @return bool
|
|
*/
|
|
public function areCredentialsValid($name, $password) {
|
|
$name = $this->helper->DNasBaseParameter($name);
|
|
$testConnection = clone $this->connection;
|
|
$credentials = array(
|
|
'ldapAgentName' => $name,
|
|
'ldapAgentPassword' => $password
|
|
);
|
|
if(!$testConnection->setConfiguration($credentials)) {
|
|
return false;
|
|
}
|
|
return $testConnection->bind();
|
|
}
|
|
|
|
/**
|
|
* reverse lookup of a DN given a known UUID
|
|
*
|
|
* @param string $uuid
|
|
* @return string
|
|
* @throws \Exception
|
|
*/
|
|
public function getUserDnByUuid($uuid) {
|
|
$uuidOverride = $this->connection->ldapExpertUUIDUserAttr;
|
|
$filter = $this->connection->ldapUserFilter;
|
|
$base = $this->connection->ldapBaseUsers;
|
|
|
|
if ($this->connection->ldapUuidUserAttribute === 'auto' && $uuidOverride === '') {
|
|
// Sacrebleu! The UUID attribute is unknown :( We need first an
|
|
// existing DN to be able to reliably detect it.
|
|
$result = $this->search($filter, $base, ['dn'], 1);
|
|
if(!isset($result[0]) || !isset($result[0]['dn'])) {
|
|
throw new \Exception('Cannot determine UUID attribute');
|
|
}
|
|
$dn = $result[0]['dn'][0];
|
|
if(!$this->detectUuidAttribute($dn, true)) {
|
|
throw new \Exception('Cannot determine UUID attribute');
|
|
}
|
|
} else {
|
|
// The UUID attribute is either known or an override is given.
|
|
// By calling this method we ensure that $this->connection->$uuidAttr
|
|
// is definitely set
|
|
if(!$this->detectUuidAttribute('', true)) {
|
|
throw new \Exception('Cannot determine UUID attribute');
|
|
}
|
|
}
|
|
|
|
$uuidAttr = $this->connection->ldapUuidUserAttribute;
|
|
if($uuidAttr === 'guid' || $uuidAttr === 'objectguid') {
|
|
$uuid = $this->formatGuid2ForFilterUser($uuid);
|
|
}
|
|
|
|
$filter = $uuidAttr . '=' . $uuid;
|
|
$result = $this->searchUsers($filter, ['dn'], 2);
|
|
if(is_array($result) && isset($result[0]) && isset($result[0]['dn']) && count($result) === 1) {
|
|
// we put the count into account to make sure that this is
|
|
// really unique
|
|
return $result[0]['dn'][0];
|
|
}
|
|
|
|
throw new \Exception('Cannot determine UUID attribute');
|
|
}
|
|
|
|
/**
|
|
* auto-detects the directory's UUID attribute
|
|
* @param string $dn a known DN used to check against
|
|
* @param bool $isUser
|
|
* @param bool $force the detection should be run, even if it is not set to auto
|
|
* @return bool true on success, false otherwise
|
|
*/
|
|
private function detectUuidAttribute($dn, $isUser = true, $force = false) {
|
|
if($isUser) {
|
|
$uuidAttr = 'ldapUuidUserAttribute';
|
|
$uuidOverride = $this->connection->ldapExpertUUIDUserAttr;
|
|
} else {
|
|
$uuidAttr = 'ldapUuidGroupAttribute';
|
|
$uuidOverride = $this->connection->ldapExpertUUIDGroupAttr;
|
|
}
|
|
|
|
if(($this->connection->$uuidAttr !== 'auto') && !$force) {
|
|
return true;
|
|
}
|
|
|
|
if (is_string($uuidOverride) && trim($uuidOverride) !== '' && !$force) {
|
|
$this->connection->$uuidAttr = $uuidOverride;
|
|
return true;
|
|
}
|
|
|
|
// for now, supported attributes are entryUUID, nsuniqueid, objectGUID, ipaUniqueID
|
|
$testAttributes = array('entryuuid', 'nsuniqueid', 'objectguid', 'guid', 'ipauniqueid');
|
|
|
|
foreach($testAttributes as $attribute) {
|
|
$value = $this->readAttribute($dn, $attribute);
|
|
if(is_array($value) && isset($value[0]) && !empty($value[0])) {
|
|
\OCP\Util::writeLog('user_ldap',
|
|
'Setting '.$attribute.' as '.$uuidAttr,
|
|
\OCP\Util::DEBUG);
|
|
$this->connection->$uuidAttr = $attribute;
|
|
return true;
|
|
}
|
|
}
|
|
\OCP\Util::writeLog('user_ldap',
|
|
'Could not autodetect the UUID attribute',
|
|
\OCP\Util::ERROR);
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param string $dn
|
|
* @param bool $isUser
|
|
* @return string|bool
|
|
*/
|
|
public function getUUID($dn, $isUser = true) {
|
|
if($isUser) {
|
|
$uuidAttr = 'ldapUuidUserAttribute';
|
|
$uuidOverride = $this->connection->ldapExpertUUIDUserAttr;
|
|
} else {
|
|
$uuidAttr = 'ldapUuidGroupAttribute';
|
|
$uuidOverride = $this->connection->ldapExpertUUIDGroupAttr;
|
|
}
|
|
|
|
$uuid = false;
|
|
if($this->detectUuidAttribute($dn, $isUser)) {
|
|
$uuid = $this->readAttribute($dn, $this->connection->$uuidAttr);
|
|
if( !is_array($uuid)
|
|
&& $uuidOverride !== ''
|
|
&& $this->detectUuidAttribute($dn, $isUser, true)) {
|
|
$uuid = $this->readAttribute($dn,
|
|
$this->connection->$uuidAttr);
|
|
}
|
|
if(is_array($uuid) && isset($uuid[0]) && !empty($uuid[0])) {
|
|
$uuid = $uuid[0];
|
|
}
|
|
}
|
|
|
|
return $uuid;
|
|
}
|
|
|
|
/**
|
|
* converts a binary ObjectGUID into a string representation
|
|
* @param string $oguid the ObjectGUID in it's binary form as retrieved from AD
|
|
* @return string
|
|
* @link http://www.php.net/manual/en/function.ldap-get-values-len.php#73198
|
|
*/
|
|
private function convertObjectGUID2Str($oguid) {
|
|
$hex_guid = bin2hex($oguid);
|
|
$hex_guid_to_guid_str = '';
|
|
for($k = 1; $k <= 4; ++$k) {
|
|
$hex_guid_to_guid_str .= substr($hex_guid, 8 - 2 * $k, 2);
|
|
}
|
|
$hex_guid_to_guid_str .= '-';
|
|
for($k = 1; $k <= 2; ++$k) {
|
|
$hex_guid_to_guid_str .= substr($hex_guid, 12 - 2 * $k, 2);
|
|
}
|
|
$hex_guid_to_guid_str .= '-';
|
|
for($k = 1; $k <= 2; ++$k) {
|
|
$hex_guid_to_guid_str .= substr($hex_guid, 16 - 2 * $k, 2);
|
|
}
|
|
$hex_guid_to_guid_str .= '-' . substr($hex_guid, 16, 4);
|
|
$hex_guid_to_guid_str .= '-' . substr($hex_guid, 20);
|
|
|
|
return strtoupper($hex_guid_to_guid_str);
|
|
}
|
|
|
|
/**
|
|
* the first three blocks of the string-converted GUID happen to be in
|
|
* reverse order. In order to use it in a filter, this needs to be
|
|
* corrected. Furthermore the dashes need to be replaced and \\ preprended
|
|
* to every two hax figures.
|
|
*
|
|
* If an invalid string is passed, it will be returned without change.
|
|
*
|
|
* @param string $guid
|
|
* @return string
|
|
*/
|
|
public function formatGuid2ForFilterUser($guid) {
|
|
if(!is_string($guid)) {
|
|
throw new \InvalidArgumentException('String expected');
|
|
}
|
|
$blocks = explode('-', $guid);
|
|
if(count($blocks) !== 5) {
|
|
/*
|
|
* Why not throw an Exception instead? This method is a utility
|
|
* called only when trying to figure out whether a "missing" known
|
|
* LDAP user was or was not renamed on the LDAP server. And this
|
|
* even on the use case that a reverse lookup is needed (UUID known,
|
|
* not DN), i.e. when finding users (search dialog, users page,
|
|
* login, …) this will not be fired. This occurs only if shares from
|
|
* a users are supposed to be mounted who cannot be found. Throwing
|
|
* an exception here would kill the experience for a valid, acting
|
|
* user. Instead we write a log message.
|
|
*/
|
|
\OC::$server->getLogger()->info(
|
|
'Passed string does not resemble a valid GUID. Known UUID ' .
|
|
'({uuid}) probably does not match UUID configuration.',
|
|
[ 'app' => 'user_ldap', 'uuid' => $guid ]
|
|
);
|
|
return $guid;
|
|
}
|
|
for($i=0; $i < 3; $i++) {
|
|
$pairs = str_split($blocks[$i], 2);
|
|
$pairs = array_reverse($pairs);
|
|
$blocks[$i] = implode('', $pairs);
|
|
}
|
|
for($i=0; $i < 5; $i++) {
|
|
$pairs = str_split($blocks[$i], 2);
|
|
$blocks[$i] = '\\' . implode('\\', $pairs);
|
|
}
|
|
return implode('', $blocks);
|
|
}
|
|
|
|
/**
|
|
* gets a SID of the domain of the given dn
|
|
* @param string $dn
|
|
* @return string|bool
|
|
*/
|
|
public function getSID($dn) {
|
|
$domainDN = $this->getDomainDNFromDN($dn);
|
|
$cacheKey = 'getSID-'.$domainDN;
|
|
$sid = $this->connection->getFromCache($cacheKey);
|
|
if(!is_null($sid)) {
|
|
return $sid;
|
|
}
|
|
|
|
$objectSid = $this->readAttribute($domainDN, 'objectsid');
|
|
if(!is_array($objectSid) || empty($objectSid)) {
|
|
$this->connection->writeToCache($cacheKey, false);
|
|
return false;
|
|
}
|
|
$domainObjectSid = $this->convertSID2Str($objectSid[0]);
|
|
$this->connection->writeToCache($cacheKey, $domainObjectSid);
|
|
|
|
return $domainObjectSid;
|
|
}
|
|
|
|
/**
|
|
* converts a binary SID into a string representation
|
|
* @param string $sid
|
|
* @return string
|
|
*/
|
|
public function convertSID2Str($sid) {
|
|
// The format of a SID binary string is as follows:
|
|
// 1 byte for the revision level
|
|
// 1 byte for the number n of variable sub-ids
|
|
// 6 bytes for identifier authority value
|
|
// n*4 bytes for n sub-ids
|
|
//
|
|
// Example: 010400000000000515000000a681e50e4d6c6c2bca32055f
|
|
// Legend: RRNNAAAAAAAAAAAA11111111222222223333333344444444
|
|
$revision = ord($sid[0]);
|
|
$numberSubID = ord($sid[1]);
|
|
|
|
$subIdStart = 8; // 1 + 1 + 6
|
|
$subIdLength = 4;
|
|
if (strlen($sid) !== $subIdStart + $subIdLength * $numberSubID) {
|
|
// Incorrect number of bytes present.
|
|
return '';
|
|
}
|
|
|
|
// 6 bytes = 48 bits can be represented using floats without loss of
|
|
// precision (see https://gist.github.com/bantu/886ac680b0aef5812f71)
|
|
$iav = number_format(hexdec(bin2hex(substr($sid, 2, 6))), 0, '', '');
|
|
|
|
$subIDs = array();
|
|
for ($i = 0; $i < $numberSubID; $i++) {
|
|
$subID = unpack('V', substr($sid, $subIdStart + $subIdLength * $i, $subIdLength));
|
|
$subIDs[] = sprintf('%u', $subID[1]);
|
|
}
|
|
|
|
// Result for example above: S-1-5-21-249921958-728525901-1594176202
|
|
return sprintf('S-%d-%s-%s', $revision, $iav, implode('-', $subIDs));
|
|
}
|
|
|
|
/**
|
|
* checks if the given DN is part of the given base DN(s)
|
|
* @param string $dn the DN
|
|
* @param string[] $bases array containing the allowed base DN or DNs
|
|
* @return bool
|
|
*/
|
|
public function isDNPartOfBase($dn, $bases) {
|
|
$belongsToBase = false;
|
|
$bases = $this->helper->sanitizeDN($bases);
|
|
|
|
foreach($bases as $base) {
|
|
$belongsToBase = true;
|
|
if(mb_strripos($dn, $base, 0, 'UTF-8') !== (mb_strlen($dn, 'UTF-8')-mb_strlen($base, 'UTF-8'))) {
|
|
$belongsToBase = false;
|
|
}
|
|
if($belongsToBase) {
|
|
break;
|
|
}
|
|
}
|
|
return $belongsToBase;
|
|
}
|
|
|
|
/**
|
|
* resets a running Paged Search operation
|
|
*/
|
|
private function abandonPagedSearch() {
|
|
if($this->connection->hasPagedResultSupport) {
|
|
$cr = $this->connection->getConnectionResource();
|
|
$this->ldap->controlPagedResult($cr, 0, false, $this->lastCookie);
|
|
$this->getPagedSearchResultState();
|
|
$this->lastCookie = '';
|
|
$this->cookies = array();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* get a cookie for the next LDAP paged search
|
|
* @param string $base a string with the base DN for the search
|
|
* @param string $filter the search filter to identify the correct search
|
|
* @param int $limit the limit (or 'pageSize'), to identify the correct search well
|
|
* @param int $offset the offset for the new search to identify the correct search really good
|
|
* @return string containing the key or empty if none is cached
|
|
*/
|
|
private function getPagedResultCookie($base, $filter, $limit, $offset) {
|
|
if($offset === 0) {
|
|
return '';
|
|
}
|
|
$offset -= $limit;
|
|
//we work with cache here
|
|
$cacheKey = 'lc' . crc32($base) . '-' . crc32($filter) . '-' . intval($limit) . '-' . intval($offset);
|
|
$cookie = '';
|
|
if(isset($this->cookies[$cacheKey])) {
|
|
$cookie = $this->cookies[$cacheKey];
|
|
if(is_null($cookie)) {
|
|
$cookie = '';
|
|
}
|
|
}
|
|
return $cookie;
|
|
}
|
|
|
|
/**
|
|
* checks whether an LDAP paged search operation has more pages that can be
|
|
* retrieved, typically when offset and limit are provided.
|
|
*
|
|
* Be very careful to use it: the last cookie value, which is inspected, can
|
|
* be reset by other operations. Best, call it immediately after a search(),
|
|
* searchUsers() or searchGroups() call. count-methods are probably safe as
|
|
* well. Don't rely on it with any fetchList-method.
|
|
* @return bool
|
|
*/
|
|
public function hasMoreResults() {
|
|
if(!$this->connection->hasPagedResultSupport) {
|
|
return false;
|
|
}
|
|
|
|
if(empty($this->lastCookie) && $this->lastCookie !== '0') {
|
|
// as in RFC 2696, when all results are returned, the cookie will
|
|
// be empty.
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* set a cookie for LDAP paged search run
|
|
* @param string $base a string with the base DN for the search
|
|
* @param string $filter the search filter to identify the correct search
|
|
* @param int $limit the limit (or 'pageSize'), to identify the correct search well
|
|
* @param int $offset the offset for the run search to identify the correct search really good
|
|
* @param string $cookie string containing the cookie returned by ldap_control_paged_result_response
|
|
* @return void
|
|
*/
|
|
private function setPagedResultCookie($base, $filter, $limit, $offset, $cookie) {
|
|
// allow '0' for 389ds
|
|
if(!empty($cookie) || $cookie === '0') {
|
|
$cacheKey = 'lc' . crc32($base) . '-' . crc32($filter) . '-' .intval($limit) . '-' . intval($offset);
|
|
$this->cookies[$cacheKey] = $cookie;
|
|
$this->lastCookie = $cookie;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check whether the most recent paged search was successful. It flushed the state var. Use it always after a possible paged search.
|
|
* @return boolean|null true on success, null or false otherwise
|
|
*/
|
|
public function getPagedSearchResultState() {
|
|
$result = $this->pagedSearchedSuccessful;
|
|
$this->pagedSearchedSuccessful = null;
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Prepares a paged search, if possible
|
|
* @param string $filter the LDAP filter for the search
|
|
* @param string[] $bases an array containing the LDAP subtree(s) that shall be searched
|
|
* @param string[] $attr optional, when a certain attribute shall be filtered outside
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return bool|true
|
|
*/
|
|
private function initPagedSearch($filter, $bases, $attr, $limit, $offset) {
|
|
$pagedSearchOK = false;
|
|
if($this->connection->hasPagedResultSupport && ($limit !== 0)) {
|
|
$offset = intval($offset); //can be null
|
|
\OCP\Util::writeLog('user_ldap',
|
|
'initializing paged search for Filter '.$filter.' base '.print_r($bases, true)
|
|
.' attr '.print_r($attr, true). ' limit ' .$limit.' offset '.$offset,
|
|
\OCP\Util::DEBUG);
|
|
//get the cookie from the search for the previous search, required by LDAP
|
|
foreach($bases as $base) {
|
|
|
|
$cookie = $this->getPagedResultCookie($base, $filter, $limit, $offset);
|
|
if(empty($cookie) && $cookie !== "0" && ($offset > 0)) {
|
|
// no cookie known, although the offset is not 0. Maybe cache run out. We need
|
|
// to start all over *sigh* (btw, Dear Reader, did you know LDAP paged
|
|
// searching was designed by MSFT?)
|
|
// Lukas: No, but thanks to reading that source I finally know!
|
|
// '0' is valid, because 389ds
|
|
$reOffset = ($offset - $limit) < 0 ? 0 : $offset - $limit;
|
|
//a bit recursive, $offset of 0 is the exit
|
|
\OCP\Util::writeLog('user_ldap', 'Looking for cookie L/O '.$limit.'/'.$reOffset, \OCP\Util::INFO);
|
|
$this->search($filter, array($base), $attr, $limit, $reOffset, true);
|
|
$cookie = $this->getPagedResultCookie($base, $filter, $limit, $offset);
|
|
//still no cookie? obviously, the server does not like us. Let's skip paging efforts.
|
|
//TODO: remember this, probably does not change in the next request...
|
|
if(empty($cookie) && $cookie !== '0') {
|
|
// '0' is valid, because 389ds
|
|
$cookie = null;
|
|
}
|
|
}
|
|
if(!is_null($cookie)) {
|
|
//since offset = 0, this is a new search. We abandon other searches that might be ongoing.
|
|
$this->abandonPagedSearch();
|
|
$pagedSearchOK = $this->ldap->controlPagedResult(
|
|
$this->connection->getConnectionResource(), $limit,
|
|
false, $cookie);
|
|
if(!$pagedSearchOK) {
|
|
return false;
|
|
}
|
|
\OCP\Util::writeLog('user_ldap', 'Ready for a paged search', \OCP\Util::DEBUG);
|
|
} else {
|
|
\OCP\Util::writeLog('user_ldap',
|
|
'No paged search for us, Cpt., Limit '.$limit.' Offset '.$offset,
|
|
\OCP\Util::INFO);
|
|
}
|
|
|
|
}
|
|
/* ++ Fixing RHDS searches with pages with zero results ++
|
|
* We coudn't get paged searches working with our RHDS for login ($limit = 0),
|
|
* due to pages with zero results.
|
|
* So we added "&& !empty($this->lastCookie)" to this test to ignore pagination
|
|
* if we don't have a previous paged search.
|
|
*/
|
|
} else if($this->connection->hasPagedResultSupport && $limit === 0 && !empty($this->lastCookie)) {
|
|
// a search without limit was requested. However, if we do use
|
|
// Paged Search once, we always must do it. This requires us to
|
|
// initialize it with the configured page size.
|
|
$this->abandonPagedSearch();
|
|
// in case someone set it to 0 … use 500, otherwise no results will
|
|
// be returned.
|
|
$pageSize = intval($this->connection->ldapPagingSize) > 0 ? intval($this->connection->ldapPagingSize) : 500;
|
|
$pagedSearchOK = $this->ldap->controlPagedResult(
|
|
$this->connection->getConnectionResource(), $pageSize, false, ''
|
|
);
|
|
}
|
|
|
|
return $pagedSearchOK;
|
|
}
|
|
|
|
}
|