276 lines
7.5 KiB
PHP
276 lines
7.5 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 Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Roger Szabo <roger.szabo@web.de>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\User_LDAP\User;
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use OC\Cache\CappedMemoryCache;
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use OCA\User_LDAP\Access;
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use OCA\User_LDAP\LogWrapper;
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use OCA\User_LDAP\FilesystemHelper;
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use OCP\IAvatarManager;
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use OCP\IConfig;
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use OCP\IDBConnection;
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use OCP\Image;
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use OCP\IUserManager;
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use OCP\Notification\IManager as INotificationManager;
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/**
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* Manager
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*
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* upon request, returns an LDAP user object either by creating or from run-time
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* cache
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*/
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class Manager {
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/** @var Access */
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protected $access;
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/** @var IConfig */
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protected $ocConfig;
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/** @var IDBConnection */
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protected $db;
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/** @var IUserManager */
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protected $userManager;
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/** @var INotificationManager */
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protected $notificationManager;
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/** @var FilesystemHelper */
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protected $ocFilesystem;
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/** @var LogWrapper */
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protected $ocLog;
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/** @var Image */
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protected $image;
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/** @param \OCP\IAvatarManager */
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protected $avatarManager;
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/**
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* @var CappedMemoryCache $usersByDN
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*/
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protected $usersByDN;
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/**
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* @var CappedMemoryCache $usersByUid
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*/
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protected $usersByUid;
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/**
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* @param IConfig $ocConfig
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* @param \OCA\User_LDAP\FilesystemHelper $ocFilesystem object that
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* gives access to necessary functions from the OC filesystem
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* @param \OCA\User_LDAP\LogWrapper $ocLog
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* @param IAvatarManager $avatarManager
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* @param Image $image an empty image instance
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* @param IDBConnection $db
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* @throws \Exception when the methods mentioned above do not exist
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*/
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public function __construct(IConfig $ocConfig,
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FilesystemHelper $ocFilesystem, LogWrapper $ocLog,
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IAvatarManager $avatarManager, Image $image,
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IDBConnection $db, IUserManager $userManager,
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INotificationManager $notificationManager) {
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$this->ocConfig = $ocConfig;
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$this->ocFilesystem = $ocFilesystem;
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$this->ocLog = $ocLog;
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$this->avatarManager = $avatarManager;
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$this->image = $image;
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$this->db = $db;
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$this->userManager = $userManager;
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$this->notificationManager = $notificationManager;
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$this->usersByDN = new CappedMemoryCache();
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$this->usersByUid = new CappedMemoryCache();
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}
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/**
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* Binds manager to an instance of Access.
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* It needs to be assigned first before the manager can be used.
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* @param Access
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*/
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public function setLdapAccess(Access $access) {
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$this->access = $access;
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}
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/**
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* @brief creates an instance of User and caches (just runtime) it in the
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* property array
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* @param string $dn the DN of the user
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* @param string $uid the internal (owncloud) username
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* @return \OCA\User_LDAP\User\User
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*/
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private function createAndCache($dn, $uid) {
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$this->checkAccess();
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$user = new User($uid, $dn, $this->access, $this->ocConfig,
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$this->ocFilesystem, clone $this->image, $this->ocLog,
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$this->avatarManager, $this->userManager,
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$this->notificationManager);
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$this->usersByDN[$dn] = $user;
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$this->usersByUid[$uid] = $user;
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return $user;
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}
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/**
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* removes a user entry from the cache
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* @param $uid
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*/
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public function invalidate($uid) {
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if(!isset($this->usersByUid[$uid])) {
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return;
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}
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$dn = $this->usersByUid[$uid]->getDN();
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unset($this->usersByUid[$uid]);
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unset($this->usersByDN[$dn]);
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}
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/**
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* @brief checks whether the Access instance has been set
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* @throws \Exception if Access has not been set
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* @return null
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*/
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private function checkAccess() {
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if(is_null($this->access)) {
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throw new \Exception('LDAP Access instance must be set first');
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}
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}
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/**
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* returns a list of attributes that will be processed further, e.g. quota,
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* email, displayname, or others.
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*
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* @param bool $minimal - optional, set to true to skip attributes with big
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* payload
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* @return string[]
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*/
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public function getAttributes($minimal = false) {
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$attributes = array_merge(Access::UUID_ATTRIBUTES, ['dn', 'uid', 'samaccountname', 'memberof']);
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$possible = array(
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$this->access->getConnection()->ldapExpertUUIDUserAttr,
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$this->access->getConnection()->ldapQuotaAttribute,
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$this->access->getConnection()->ldapEmailAttribute,
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$this->access->getConnection()->ldapUserDisplayName,
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$this->access->getConnection()->ldapUserDisplayName2,
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);
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foreach($possible as $attr) {
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if(!is_null($attr)) {
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$attributes[] = $attr;
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}
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}
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$homeRule = $this->access->getConnection()->homeFolderNamingRule;
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if(strpos($homeRule, 'attr:') === 0) {
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$attributes[] = substr($homeRule, strlen('attr:'));
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}
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if(!$minimal) {
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// attributes that are not really important but may come with big
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// payload.
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$attributes = array_merge(
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$attributes,
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$this->access->getConnection()->resolveRule('avatar')
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);
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}
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// remove possible empty attributes
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$attributes = array_values(
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array_filter($attributes, function ($attributeName) {
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return !empty($attributeName);
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})
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);
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return $attributes;
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}
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/**
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* Checks whether the specified user is marked as deleted
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* @param string $id the Nextcloud user name
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* @return bool
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*/
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public function isDeletedUser($id) {
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$isDeleted = $this->ocConfig->getUserValue(
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$id, 'user_ldap', 'isDeleted', 0);
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return (int)$isDeleted === 1;
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}
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/**
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* creates and returns an instance of OfflineUser for the specified user
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* @param string $id
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* @return \OCA\User_LDAP\User\OfflineUser
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*/
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public function getDeletedUser($id) {
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return new OfflineUser(
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$id,
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$this->ocConfig,
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$this->db,
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$this->access->getUserMapper());
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}
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/**
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* @brief returns a User object by it's Nextcloud username
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* @param string $id the DN or username of the user
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* @return \OCA\User_LDAP\User\User|\OCA\User_LDAP\User\OfflineUser|null
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*/
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protected function createInstancyByUserName($id) {
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//most likely a uid. Check whether it is a deleted user
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if($this->isDeletedUser($id)) {
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return $this->getDeletedUser($id);
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}
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$dn = $this->access->username2dn($id);
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if($dn !== false) {
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return $this->createAndCache($dn, $id);
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}
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return null;
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}
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/**
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* @brief returns a User object by it's DN or Nextcloud username
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* @param string $id the DN or username of the user
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* @return \OCA\User_LDAP\User\User|\OCA\User_LDAP\User\OfflineUser|null
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* @throws \Exception when connection could not be established
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*/
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public function get($id) {
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$this->checkAccess();
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if(isset($this->usersByDN[$id])) {
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return $this->usersByDN[$id];
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} else if(isset($this->usersByUid[$id])) {
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return $this->usersByUid[$id];
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}
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if($this->access->stringResemblesDN($id) ) {
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$uid = $this->access->dn2username($id);
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if($uid !== false) {
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return $this->createAndCache($id, $uid);
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}
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}
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return $this->createInstancyByUserName($id);
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}
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}
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