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<?php
/**
* @copyright Copyright (c) 2016, Roger Szabo (roger.szabo@web.de)
*
* @author Joas Schilling <coding@schilljs.com>
* @author Roger Szabo <roger.szabo@web.de>
* @author root <root@localhost.localdomain>
* @author Vinicius Cubas Brand <vinicius@eita.org.br>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\User_LDAP;
use OCP\LDAP\ILDAPProvider;
use OCP\LDAP\IDeletionFlagSupport;
use OCP\IServerContainer;
use OCA\User_LDAP\User\DeletedUsersIndex;
/**
* LDAP provider for pulic access to the LDAP backend.
*/
class LDAPProvider implements ILDAPProvider, IDeletionFlagSupport {
private $userBackend;
private $groupBackend;
private $logger;
private $helper;
private $deletedUsersIndex;
/**
* Create new LDAPProvider
* @param \OCP\IServerContainer $serverContainer
* @param Helper $helper
* @param DeletedUsersIndex $deletedUsersIndex
* @throws \Exception if user_ldap app was not enabled
*/
public function __construct(IServerContainer $serverContainer, Helper $helper, DeletedUsersIndex $deletedUsersIndex) {
$this->logger = $serverContainer->getLogger();
$this->helper = $helper;
$this->deletedUsersIndex = $deletedUsersIndex;
$userBackendFound = false;
$groupBackendFound = false;
foreach ($serverContainer->getUserManager()->getBackends() as $backend){
$this->logger->debug('instance '.get_class($backend).' user backend.', ['app' => 'user_ldap']);
if ($backend instanceof IUserLDAP) {
$this->userBackend = $backend;
$userBackendFound = true;
break;
}
}
foreach ($serverContainer->getGroupManager()->getBackends() as $backend){
$this->logger->debug('instance '.get_class($backend).' group backend.', ['app' => 'user_ldap']);
if ($backend instanceof IGroupLDAP) {
$this->groupBackend = $backend;
$groupBackendFound = true;
break;
}
}
if (!$userBackendFound or !$groupBackendFound) {
throw new \Exception('To use the LDAPProvider, user_ldap app must be enabled');
}
}
/**
* Translate an user id to LDAP DN
* @param string $uid user id
* @return string with the LDAP DN
* @throws \Exception if translation was unsuccessful
*/
public function getUserDN($uid) {
if(!$this->userBackend->userExists($uid)){
throw new \Exception('User id not found in LDAP');
}
$result = $this->userBackend->getLDAPAccess($uid)->username2dn($uid);
if(!$result){
throw new \Exception('Translation to LDAP DN unsuccessful');
}
return $result;
}
/**
* Translate a group id to LDAP DN.
* @param string $gid group id
* @return string
* @throws \Exception
*/
public function getGroupDN($gid) {
if(!$this->groupBackend->groupExists($gid)){
throw new \Exception('Group id not found in LDAP');
}
$result = $this->groupBackend->getLDAPAccess($gid)->groupname2dn($gid);
if(!$result){
throw new \Exception('Translation to LDAP DN unsuccessful');
}
return $result;
}
/**
* Translate a LDAP DN to an internal user name. If there is no mapping between
* the DN and the user name, a new one will be created.
* @param string $dn LDAP DN
* @return string with the internal user name
* @throws \Exception if translation was unsuccessful
*/
public function getUserName($dn) {
$result = $this->userBackend->dn2UserName($dn);
if(!$result){
throw new \Exception('Translation to internal user name unsuccessful');
}
return $result;
}
/**
* Convert a stored DN so it can be used as base parameter for LDAP queries.
* @param string $dn the DN in question
* @return string
*/
public function DNasBaseParameter($dn) {
return $this->helper->DNasBaseParameter($dn);
}
/**
* Sanitize a DN received from the LDAP server.
* @param array $dn the DN in question
* @return array the sanitized DN
*/
public function sanitizeDN($dn) {
return $this->helper->sanitizeDN($dn);
}
/**
* Return a new LDAP connection resource for the specified user.
* The connection must be closed manually.
* @param string $uid user id
* @return resource of the LDAP connection
* @throws \Exception if user id was not found in LDAP
*/
public function getLDAPConnection($uid) {
if(!$this->userBackend->userExists($uid)){
throw new \Exception('User id not found in LDAP');
}
return $this->userBackend->getNewLDAPConnection($uid);
}
/**
* Return a new LDAP connection resource for the specified user.
* The connection must be closed manually.
* @param string $gid group id
* @return resource of the LDAP connection
* @throws \Exception if group id was not found in LDAP
*/
public function getGroupLDAPConnection($gid) {
if(!$this->groupBackend->groupExists($gid)){
throw new \Exception('Group id not found in LDAP');
}
return $this->groupBackend->getNewLDAPConnection($gid);
}
/**
* Get the LDAP base for users.
* @param string $uid user id
* @return string the base for users
* @throws \Exception if user id was not found in LDAP
*/
public function getLDAPBaseUsers($uid) {
if(!$this->userBackend->userExists($uid)){
throw new \Exception('User id not found in LDAP');
}
return $this->userBackend->getLDAPAccess($uid)->getConnection()->getConfiguration()['ldap_base_users'];
}
/**
* Get the LDAP base for groups.
* @param string $uid user id
* @return string the base for groups
* @throws \Exception if user id was not found in LDAP
*/
public function getLDAPBaseGroups($uid) {
if(!$this->userBackend->userExists($uid)){
throw new \Exception('User id not found in LDAP');
}
return $this->userBackend->getLDAPAccess($uid)->getConnection()->getConfiguration()['ldap_base_groups'];
}
/**
* Clear the cache if a cache is used, otherwise do nothing.
* @param string $uid user id
* @throws \Exception if user id was not found in LDAP
*/
public function clearCache($uid) {
if(!$this->userBackend->userExists($uid)){
throw new \Exception('User id not found in LDAP');
}
$this->userBackend->getLDAPAccess($uid)->getConnection()->clearCache();
}
/**
* Clear the cache if a cache is used, otherwise do nothing.
* Acts on the LDAP connection of a group
* @param string $gid group id
* @throws \Exception if user id was not found in LDAP
*/
public function clearGroupCache($gid) {
if(!$this->groupBackend->groupExists($gid)){
throw new \Exception('Group id not found in LDAP');
}
$this->groupBackend->getLDAPAccess($gid)->getConnection()->clearCache();
}
/**
* Check whether a LDAP DN exists
* @param string $dn LDAP DN
* @return bool whether the DN exists
*/
public function dnExists($dn) {
$result = $this->userBackend->dn2UserName($dn);
return !$result ? false : true;
}
/**
* Flag record for deletion.
* @param string $uid user id
*/
public function flagRecord($uid) {
$this->deletedUsersIndex->markUser($uid);
}
/**
* Unflag record for deletion.
* @param string $uid user id
*/
public function unflagRecord($uid) {
//do nothing
}
/**
* Get the LDAP attribute name for the user's display name
* @param string $uid user id
* @return string the display name field
* @throws \Exception if user id was not found in LDAP
*/
public function getLDAPDisplayNameField($uid) {
if(!$this->userBackend->userExists($uid)){
throw new \Exception('User id not found in LDAP');
}
return $this->userBackend->getLDAPAccess($uid)->getConnection()->getConfiguration()['ldap_display_name'];
}
/**
* Get the LDAP attribute name for the email
* @param string $uid user id
* @return string the email field
* @throws \Exception if user id was not found in LDAP
*/
public function getLDAPEmailField($uid) {
if(!$this->userBackend->userExists($uid)){
throw new \Exception('User id not found in LDAP');
}
return $this->userBackend->getLDAPAccess($uid)->getConnection()->getConfiguration()['ldap_email_attr'];
}
/**
* Get the LDAP type of association between users and groups
* @param string $gid group id
* @return string the configuration, one of: 'memberUid', 'uniqueMember', 'member', 'gidNumber'
* @throws \Exception if group id was not found in LDAP
*/
public function getLDAPGroupMemberAssoc($gid) {
if(!$this->groupBackend->groupExists($gid)){
throw new \Exception('Group id not found in LDAP');
}
return $this->groupBackend->getLDAPAccess($gid)->getConnection()->getConfiguration()['ldap_group_member_assoc_attribute'];
}
}