nextcloud/apps/user_ldap/lib/user/manager.php

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<?php
/**
* ownCloud LDAP User
*
* @author Arthur Schiwon
* @copyright 2014 Arthur Schiwon blizzz@owncloud.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 library. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\user_ldap\lib\user;
use OCA\user_ldap\lib\user\IUserTools;
use OCA\user_ldap\lib\user\User;
use OCA\user_ldap\lib\LogWrapper;
use OCA\user_ldap\lib\FilesystemHelper;
/**
* Manager
*
* upon request, returns an LDAP user object either by creating or from run-time
* cache
*/
class Manager {
/**
* @var IUserTools
*/
protected $access;
/**
* @var \OCP\IConfig
*/
protected $ocConfig;
/**
* @var FilesystemHelper
*/
protected $ocFilesystem;
/**
* @var LogWrapper
*/
protected $ocLog;
/**
* @var \OCP\Image
*/
protected $image;
/**
* @param \OCP\IAvatarManager
*/
protected $avatarManager;
/**
* @var string[][]
*/
protected $users = array(
'byDN' => array(),
'byUid' => array(),
);
/**
* @brief Constructor
* @param \OCP\IConfig respectively an instance that provides the methods
* setUserValue and getUserValue as implemented in \OCP\Config
* @param \OCA\user_ldap\lib\FilesystemHelper object that gives access to
* necessary functions from the OC filesystem
* @param \OCA\user_ldap\lib\LogWrapper
* @param \OCP\IAvatarManager
* @param \OCP\Image an empty image instance
* @throws Exception when the methods mentioned above do not exist
*/
public function __construct(\OCP\IConfig $ocConfig,
FilesystemHelper $ocFilesystem, LogWrapper $ocLog,
\OCP\IAvatarManager $avatarManager, \OCP\Image $image) {
if(!method_exists($ocConfig, 'setUserValue')
|| !method_exists($ocConfig, 'getUserValue')) {
throw new \Exception('Invalid ownCloud User Config object');
}
$this->ocConfig = $ocConfig;
$this->ocFilesystem = $ocFilesystem;
$this->ocLog = $ocLog;
$this->avatarManager = $avatarManager;
$this->image = $image;
}
/**
* @brief binds manager to an instance of IUserTools (implemented by
* Access). It needs to be assigned first before the manager can be used.
* @param IUserTools
*/
public function setLdapAccess(IUserTools $access) {
$this->access = $access;
}
/**
* @brief creates an instance of User and caches (just runtime) it in the
* property array
* @param string the DN of the user
* @param string the internal (owncloud) username
* @return \OCA\user_ldap\lib\User
*/
private function createAndCache($dn, $uid) {
$this->checkAccess();
$user = new User($uid, $dn, $this->access, $this->ocConfig,
$this->ocFilesystem, clone $this->image, $this->ocLog,
$this->avatarManager);
$users['byDN'][$dn] = $user;
$users['byUid'][$uid] = $user;
return $user;
}
/**
* @brief checks whether the Access instance has been set
* @throws Exception if Access has not been set
* @return null
*/
private function checkAccess() {
if(is_null($this->access)) {
throw new \Exception('LDAP Access instance must be set first');
}
}
/**
* @brief returns a User object by it's DN or ownCloud username
* @param string the DN or username of the user
* @return \OCA\user_ldap\lib\User | null
*/
public function get($id) {
$this->checkAccess();
if(isset($this->users['byDN'][$id])) {
return $this->users['byDN'][$id];
} else if(isset($this->users['byUid'][$id])) {
return $this->users['byUid'][$id];
}
if(strpos(mb_strtolower($id, 'UTF-8'), 'dc=') === false) {
//most likely a uid
$dn = $this->access->username2dn($id);
if($dn !== false) {
return $this->createAndCache($dn, $id);
}
} else {
//so it's a DN
$uid = $this->access->dn2username($id);
if($uid !== false) {
return $this->createAndCache($id, $uid);
}
}
//either funny uid or invalid. Assume funny to be on the safe side.
$dn = $this->access->username2dn($id);
if($dn !== false) {
return $this->createAndCache($dn, $id);
}
return null;
}
}