mirror of https://github.com/nextcloud/server
313 lines
9.4 KiB
PHP
313 lines
9.4 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, Roger Szabo (roger.szabo@web.de)
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*
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Roger Szabo <roger.szabo@web.de>
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* @author root <root@localhost.localdomain>
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* @author Vinicius Cubas Brand <vinicius@eita.org.br>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program 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 as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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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
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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 OCA\User_LDAP\User\DeletedUsersIndex;
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use OCP\IServerContainer;
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use OCP\LDAP\IDeletionFlagSupport;
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use OCP\LDAP\ILDAPProvider;
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/**
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* LDAP provider for pulic access to the LDAP backend.
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*/
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class LDAPProvider implements ILDAPProvider, IDeletionFlagSupport {
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private $userBackend;
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private $groupBackend;
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private $logger;
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private $helper;
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private $deletedUsersIndex;
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/**
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* Create new LDAPProvider
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* @param \OCP\IServerContainer $serverContainer
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* @param Helper $helper
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* @param DeletedUsersIndex $deletedUsersIndex
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* @throws \Exception if user_ldap app was not enabled
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*/
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public function __construct(IServerContainer $serverContainer, Helper $helper, DeletedUsersIndex $deletedUsersIndex) {
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$this->logger = $serverContainer->getLogger();
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$this->helper = $helper;
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$this->deletedUsersIndex = $deletedUsersIndex;
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$userBackendFound = false;
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$groupBackendFound = false;
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foreach ($serverContainer->getUserManager()->getBackends() as $backend){
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$this->logger->debug('instance '.get_class($backend).' user backend.', ['app' => 'user_ldap']);
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if ($backend instanceof IUserLDAP) {
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$this->userBackend = $backend;
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$userBackendFound = true;
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break;
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}
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}
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foreach ($serverContainer->getGroupManager()->getBackends() as $backend){
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$this->logger->debug('instance '.get_class($backend).' group backend.', ['app' => 'user_ldap']);
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if ($backend instanceof IGroupLDAP) {
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$this->groupBackend = $backend;
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$groupBackendFound = true;
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break;
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}
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}
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if (!$userBackendFound or !$groupBackendFound) {
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throw new \Exception('To use the LDAPProvider, user_ldap app must be enabled');
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}
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}
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/**
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* Translate an user id to LDAP DN
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* @param string $uid user id
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* @return string with the LDAP DN
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* @throws \Exception if translation was unsuccessful
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*/
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public function getUserDN($uid) {
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if(!$this->userBackend->userExists($uid)){
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throw new \Exception('User id not found in LDAP');
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}
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$result = $this->userBackend->getLDAPAccess($uid)->username2dn($uid);
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if(!$result){
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throw new \Exception('Translation to LDAP DN unsuccessful');
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}
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return $result;
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}
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/**
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* Translate a group id to LDAP DN.
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* @param string $gid group id
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* @return string
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* @throws \Exception
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*/
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public function getGroupDN($gid) {
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if(!$this->groupBackend->groupExists($gid)){
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throw new \Exception('Group id not found in LDAP');
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}
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$result = $this->groupBackend->getLDAPAccess($gid)->groupname2dn($gid);
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if(!$result){
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throw new \Exception('Translation to LDAP DN unsuccessful');
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}
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return $result;
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}
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/**
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* Translate a LDAP DN to an internal user name. If there is no mapping between
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* the DN and the user name, a new one will be created.
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* @param string $dn LDAP DN
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* @return string with the internal user name
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* @throws \Exception if translation was unsuccessful
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*/
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public function getUserName($dn) {
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$result = $this->userBackend->dn2UserName($dn);
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if(!$result){
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throw new \Exception('Translation to internal user name unsuccessful');
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}
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return $result;
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}
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/**
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* Convert a stored DN so it can be used as base parameter for LDAP queries.
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* @param string $dn the DN in question
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* @return string
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*/
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public function DNasBaseParameter($dn) {
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return $this->helper->DNasBaseParameter($dn);
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}
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/**
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* Sanitize a DN received from the LDAP server.
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* @param array $dn the DN in question
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* @return array the sanitized DN
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*/
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public function sanitizeDN($dn) {
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return $this->helper->sanitizeDN($dn);
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}
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/**
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* Return a new LDAP connection resource for the specified user.
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* The connection must be closed manually.
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* @param string $uid user id
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* @return resource of the LDAP connection
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* @throws \Exception if user id was not found in LDAP
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*/
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public function getLDAPConnection($uid) {
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if(!$this->userBackend->userExists($uid)){
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throw new \Exception('User id not found in LDAP');
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}
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return $this->userBackend->getNewLDAPConnection($uid);
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}
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/**
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* Return a new LDAP connection resource for the specified user.
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* The connection must be closed manually.
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* @param string $gid group id
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* @return resource of the LDAP connection
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* @throws \Exception if group id was not found in LDAP
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*/
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public function getGroupLDAPConnection($gid) {
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if(!$this->groupBackend->groupExists($gid)){
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throw new \Exception('Group id not found in LDAP');
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}
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return $this->groupBackend->getNewLDAPConnection($gid);
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}
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/**
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* Get the LDAP base for users.
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* @param string $uid user id
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* @return string the base for users
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* @throws \Exception if user id was not found in LDAP
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*/
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public function getLDAPBaseUsers($uid) {
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if(!$this->userBackend->userExists($uid)){
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throw new \Exception('User id not found in LDAP');
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}
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$access = $this->userBackend->getLDAPAccess($uid);
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$bases = $access->getConnection()->ldapBaseUsers;
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$dn = $this->getUserDN($uid);
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foreach ($bases as $base) {
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if($access->isDNPartOfBase($dn, [$base])) {
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return $base;
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}
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}
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// should not occur, because the user does not qualify to use NC in this case
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$this->logger->info(
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'No matching user base found for user {dn}, available: {bases}.',
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[
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'app' => 'user_ldap',
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'dn' => $dn,
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'bases' => $bases,
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]
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);
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return array_shift($bases);
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}
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/**
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* Get the LDAP base for groups.
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* @param string $uid user id
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* @return string the base for groups
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* @throws \Exception if user id was not found in LDAP
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*/
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public function getLDAPBaseGroups($uid) {
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if(!$this->userBackend->userExists($uid)){
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throw new \Exception('User id not found in LDAP');
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}
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$bases = $this->userBackend->getLDAPAccess($uid)->getConnection()->ldapBaseGroups;
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return array_shift($bases);
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}
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/**
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* Clear the cache if a cache is used, otherwise do nothing.
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* @param string $uid user id
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* @throws \Exception if user id was not found in LDAP
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*/
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public function clearCache($uid) {
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if(!$this->userBackend->userExists($uid)){
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throw new \Exception('User id not found in LDAP');
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}
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$this->userBackend->getLDAPAccess($uid)->getConnection()->clearCache();
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}
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/**
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* Clear the cache if a cache is used, otherwise do nothing.
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* Acts on the LDAP connection of a group
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* @param string $gid group id
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* @throws \Exception if user id was not found in LDAP
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*/
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public function clearGroupCache($gid) {
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if(!$this->groupBackend->groupExists($gid)){
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throw new \Exception('Group id not found in LDAP');
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}
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$this->groupBackend->getLDAPAccess($gid)->getConnection()->clearCache();
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}
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/**
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* Check whether a LDAP DN exists
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* @param string $dn LDAP DN
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* @return bool whether the DN exists
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*/
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public function dnExists($dn) {
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$result = $this->userBackend->dn2UserName($dn);
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return !$result ? false : true;
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}
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/**
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* Flag record for deletion.
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* @param string $uid user id
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*/
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public function flagRecord($uid) {
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$this->deletedUsersIndex->markUser($uid);
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}
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/**
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* Unflag record for deletion.
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* @param string $uid user id
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*/
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public function unflagRecord($uid) {
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//do nothing
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}
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/**
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* Get the LDAP attribute name for the user's display name
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* @param string $uid user id
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* @return string the display name field
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* @throws \Exception if user id was not found in LDAP
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*/
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public function getLDAPDisplayNameField($uid) {
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if(!$this->userBackend->userExists($uid)){
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throw new \Exception('User id not found in LDAP');
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}
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return $this->userBackend->getLDAPAccess($uid)->getConnection()->getConfiguration()['ldap_display_name'];
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}
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/**
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* Get the LDAP attribute name for the email
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* @param string $uid user id
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* @return string the email field
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* @throws \Exception if user id was not found in LDAP
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*/
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public function getLDAPEmailField($uid) {
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if(!$this->userBackend->userExists($uid)){
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throw new \Exception('User id not found in LDAP');
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}
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return $this->userBackend->getLDAPAccess($uid)->getConnection()->getConfiguration()['ldap_email_attr'];
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}
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/**
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* Get the LDAP type of association between users and groups
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* @param string $gid group id
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* @return string the configuration, one of: 'memberUid', 'uniqueMember', 'member', 'gidNumber', ''
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* @throws \Exception if group id was not found in LDAP
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*/
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public function getLDAPGroupMemberAssoc($gid) {
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if(!$this->groupBackend->groupExists($gid)){
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throw new \Exception('Group id not found in LDAP');
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}
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return $this->groupBackend->getLDAPAccess($gid)->getConnection()->getConfiguration()['ldap_group_member_assoc_attribute'];
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}
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}
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