696 lines
22 KiB
PHP
696 lines
22 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 Morris Jobke <hey@morrisjobke.de>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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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\User;
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use OCA\User_LDAP\Connection;
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use OCA\User_LDAP\FilesystemHelper;
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use OCA\User_LDAP\LogWrapper;
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use OCP\IAvatarManager;
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use OCP\IConfig;
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use OCP\Image;
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use OCP\IUserManager;
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use OCP\Util;
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use OCP\Notification\IManager as INotificationManager;
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/**
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* User
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*
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* represents an LDAP user, gets and holds user-specific information from LDAP
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*/
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class User {
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/**
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* @var IUserTools
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*/
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protected $access;
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/**
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* @var Connection
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*/
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protected $connection;
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/**
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* @var IConfig
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*/
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protected $config;
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/**
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* @var FilesystemHelper
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*/
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protected $fs;
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/**
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* @var Image
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*/
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protected $image;
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/**
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* @var LogWrapper
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*/
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protected $log;
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/**
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* @var IAvatarManager
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*/
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protected $avatarManager;
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/**
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* @var IUserManager
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*/
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protected $userManager;
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/**
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* @var INotificationManager
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*/
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protected $notificationManager;
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/**
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* @var string
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*/
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protected $dn;
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/**
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* @var string
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*/
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protected $uid;
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/**
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* @var string[]
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*/
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protected $refreshedFeatures = array();
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/**
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* @var string
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*/
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protected $avatarImage;
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/**
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* DB config keys for user preferences
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*/
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const USER_PREFKEY_FIRSTLOGIN = 'firstLoginAccomplished';
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const USER_PREFKEY_LASTREFRESH = 'lastFeatureRefresh';
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/**
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* @brief constructor, make sure the subclasses call this one!
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* @param string $username the internal username
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* @param string $dn the LDAP DN
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* @param IUserTools $access an instance that implements IUserTools for
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* LDAP interaction
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* @param IConfig $config
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* @param FilesystemHelper $fs
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* @param Image $image any empty instance
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* @param LogWrapper $log
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* @param IAvatarManager $avatarManager
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* @param IUserManager $userManager
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* @param INotificationManager $notificationManager
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*/
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public function __construct($username, $dn, IUserTools $access,
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IConfig $config, FilesystemHelper $fs, Image $image,
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LogWrapper $log, IAvatarManager $avatarManager, IUserManager $userManager,
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INotificationManager $notificationManager) {
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if ($username === null) {
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$log->log("uid for '$dn' must not be null!", Util::ERROR);
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throw new \InvalidArgumentException('uid must not be null!');
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} else if ($username === '') {
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$log->log("uid for '$dn' must not be an empty string", Util::ERROR);
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throw new \InvalidArgumentException('uid must not be an empty string!');
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}
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$this->access = $access;
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$this->connection = $access->getConnection();
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$this->config = $config;
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$this->fs = $fs;
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$this->dn = $dn;
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$this->uid = $username;
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$this->image = $image;
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$this->log = $log;
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$this->avatarManager = $avatarManager;
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$this->userManager = $userManager;
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$this->notificationManager = $notificationManager;
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\OCP\Util::connectHook('OC_User', 'post_login', $this, 'handlePasswordExpiry');
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}
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/**
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* @brief updates properties like email, quota or avatar provided by LDAP
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* @return null
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*/
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public function update() {
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if(is_null($this->dn)) {
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return null;
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}
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$hasLoggedIn = $this->config->getUserValue($this->uid, 'user_ldap',
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self::USER_PREFKEY_FIRSTLOGIN, 0);
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if($this->needsRefresh()) {
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$this->updateEmail();
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$this->updateQuota();
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if($hasLoggedIn !== 0) {
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//we do not need to try it, when the user has not been logged in
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//before, because the file system will not be ready.
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$this->updateAvatar();
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//in order to get an avatar as soon as possible, mark the user
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//as refreshed only when updating the avatar did happen
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$this->markRefreshTime();
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}
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}
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}
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/**
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* processes results from LDAP for attributes as returned by getAttributesToRead()
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* @param array $ldapEntry the user entry as retrieved from LDAP
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*/
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public function processAttributes($ldapEntry) {
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$this->markRefreshTime();
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//Quota
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$attr = strtolower($this->connection->ldapQuotaAttribute);
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if(isset($ldapEntry[$attr])) {
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$this->updateQuota($ldapEntry[$attr][0]);
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} else {
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if ($this->connection->ldapQuotaDefault !== '') {
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$this->updateQuota();
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}
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}
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unset($attr);
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//Email
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$attr = strtolower($this->connection->ldapEmailAttribute);
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if(isset($ldapEntry[$attr])) {
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$this->updateEmail($ldapEntry[$attr][0]);
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}
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unset($attr);
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//displayName
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$displayName = $displayName2 = '';
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$attr = strtolower($this->connection->ldapUserDisplayName);
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if(isset($ldapEntry[$attr])) {
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$displayName = strval($ldapEntry[$attr][0]);
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}
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$attr = strtolower($this->connection->ldapUserDisplayName2);
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if(isset($ldapEntry[$attr])) {
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$displayName2 = strval($ldapEntry[$attr][0]);
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}
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if ($displayName !== '') {
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$this->composeAndStoreDisplayName($displayName);
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$this->access->cacheUserDisplayName(
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$this->getUsername(),
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$displayName,
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$displayName2
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);
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}
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unset($attr);
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// LDAP Username, needed for s2s sharing
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if(isset($ldapEntry['uid'])) {
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$this->storeLDAPUserName($ldapEntry['uid'][0]);
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} else if(isset($ldapEntry['samaccountname'])) {
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$this->storeLDAPUserName($ldapEntry['samaccountname'][0]);
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}
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//homePath
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if(strpos($this->connection->homeFolderNamingRule, 'attr:') === 0) {
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$attr = strtolower(substr($this->connection->homeFolderNamingRule, strlen('attr:')));
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if(isset($ldapEntry[$attr])) {
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$this->access->cacheUserHome(
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$this->getUsername(), $this->getHomePath($ldapEntry[$attr][0]));
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}
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}
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//memberOf groups
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$cacheKey = 'getMemberOf'.$this->getUsername();
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$groups = false;
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if(isset($ldapEntry['memberof'])) {
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$groups = $ldapEntry['memberof'];
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}
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$this->connection->writeToCache($cacheKey, $groups);
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//Avatar
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$attrs = array('jpegphoto', 'thumbnailphoto');
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foreach ($attrs as $attr) {
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if(isset($ldapEntry[$attr])) {
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$this->avatarImage = $ldapEntry[$attr][0];
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// the call to the method that saves the avatar in the file
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// system must be postponed after the login. It is to ensure
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// external mounts are mounted properly (e.g. with login
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// credentials from the session).
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\OCP\Util::connectHook('OC_User', 'post_login', $this, 'updateAvatarPostLogin');
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break;
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}
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}
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}
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/**
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* @brief returns the LDAP DN of the user
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* @return string
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*/
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public function getDN() {
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return $this->dn;
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}
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/**
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* @brief returns the Nextcloud internal username of the user
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* @return string
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*/
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public function getUsername() {
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return $this->uid;
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}
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/**
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* returns the home directory of the user if specified by LDAP settings
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* @param string $valueFromLDAP
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* @return bool|string
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* @throws \Exception
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*/
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public function getHomePath($valueFromLDAP = null) {
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$path = strval($valueFromLDAP);
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$attr = null;
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if (is_null($valueFromLDAP)
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&& strpos($this->access->connection->homeFolderNamingRule, 'attr:') === 0
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&& $this->access->connection->homeFolderNamingRule !== 'attr:')
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{
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$attr = substr($this->access->connection->homeFolderNamingRule, strlen('attr:'));
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$homedir = $this->access->readAttribute(
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$this->access->username2dn($this->getUsername()), $attr);
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if ($homedir && isset($homedir[0])) {
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$path = $homedir[0];
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}
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}
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if ($path !== '') {
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//if attribute's value is an absolute path take this, otherwise append it to data dir
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//check for / at the beginning or pattern c:\ resp. c:/
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if( '/' !== $path[0]
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&& !(3 < strlen($path) && ctype_alpha($path[0])
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&& $path[1] === ':' && ('\\' === $path[2] || '/' === $path[2]))
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) {
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$path = $this->config->getSystemValue('datadirectory',
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\OC::$SERVERROOT.'/data' ) . '/' . $path;
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}
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//we need it to store it in the DB as well in case a user gets
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//deleted so we can clean up afterwards
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$this->config->setUserValue(
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$this->getUsername(), 'user_ldap', 'homePath', $path
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);
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return $path;
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}
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if( !is_null($attr)
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&& $this->config->getAppValue('user_ldap', 'enforce_home_folder_naming_rule', true)
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) {
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// a naming rule attribute is defined, but it doesn't exist for that LDAP user
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throw new \Exception('Home dir attribute can\'t be read from LDAP for uid: ' . $this->getUsername());
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}
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//false will apply default behaviour as defined and done by OC_User
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$this->config->setUserValue($this->getUsername(), 'user_ldap', 'homePath', '');
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return false;
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}
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public function getMemberOfGroups() {
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$cacheKey = 'getMemberOf'.$this->getUsername();
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$memberOfGroups = $this->connection->getFromCache($cacheKey);
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if(!is_null($memberOfGroups)) {
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return $memberOfGroups;
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}
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$groupDNs = $this->access->readAttribute($this->getDN(), 'memberOf');
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$this->connection->writeToCache($cacheKey, $groupDNs);
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return $groupDNs;
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}
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/**
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* @brief reads the image from LDAP that shall be used as Avatar
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* @return string data (provided by LDAP) | false
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*/
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public function getAvatarImage() {
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if(!is_null($this->avatarImage)) {
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return $this->avatarImage;
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}
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$this->avatarImage = false;
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$attributes = array('jpegPhoto', 'thumbnailPhoto');
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foreach($attributes as $attribute) {
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$result = $this->access->readAttribute($this->dn, $attribute);
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if($result !== false && is_array($result) && isset($result[0])) {
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$this->avatarImage = $result[0];
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break;
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}
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}
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return $this->avatarImage;
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}
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/**
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* @brief marks the user as having logged in at least once
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* @return null
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*/
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public function markLogin() {
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$this->config->setUserValue(
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$this->uid, 'user_ldap', self::USER_PREFKEY_FIRSTLOGIN, 1);
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}
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/**
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* @brief marks the time when user features like email have been updated
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* @return null
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*/
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public function markRefreshTime() {
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$this->config->setUserValue(
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$this->uid, 'user_ldap', self::USER_PREFKEY_LASTREFRESH, time());
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}
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/**
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* @brief checks whether user features needs to be updated again by
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* comparing the difference of time of the last refresh to now with the
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* desired interval
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* @return bool
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*/
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private function needsRefresh() {
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$lastChecked = $this->config->getUserValue($this->uid, 'user_ldap',
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self::USER_PREFKEY_LASTREFRESH, 0);
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//TODO make interval configurable
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if((time() - intval($lastChecked)) < 86400 ) {
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return false;
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}
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return true;
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}
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/**
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* Stores a key-value pair in relation to this user
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*
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* @param string $key
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* @param string $value
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*/
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private function store($key, $value) {
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$this->config->setUserValue($this->uid, 'user_ldap', $key, $value);
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}
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/**
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* Composes the display name and stores it in the database. The final
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* display name is returned.
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*
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* @param string $displayName
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* @param string $displayName2
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* @returns string the effective display name
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*/
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public function composeAndStoreDisplayName($displayName, $displayName2 = '') {
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$displayName2 = strval($displayName2);
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if($displayName2 !== '') {
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$displayName .= ' (' . $displayName2 . ')';
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}
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$this->store('displayName', $displayName);
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return $displayName;
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}
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/**
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* Stores the LDAP Username in the Database
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* @param string $userName
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*/
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public function storeLDAPUserName($userName) {
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$this->store('uid', $userName);
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}
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/**
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* @brief checks whether an update method specified by feature was run
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* already. If not, it will marked like this, because it is expected that
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* the method will be run, when false is returned.
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* @param string $feature email | quota | avatar (can be extended)
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* @return bool
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*/
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private function wasRefreshed($feature) {
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if(isset($this->refreshedFeatures[$feature])) {
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return true;
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}
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$this->refreshedFeatures[$feature] = 1;
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return false;
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}
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/**
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* fetches the email from LDAP and stores it as Nextcloud user value
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* @param string $valueFromLDAP if known, to save an LDAP read request
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* @return null
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*/
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public function updateEmail($valueFromLDAP = null) {
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if($this->wasRefreshed('email')) {
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return;
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}
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$email = strval($valueFromLDAP);
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if(is_null($valueFromLDAP)) {
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$emailAttribute = $this->connection->ldapEmailAttribute;
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if ($emailAttribute !== '') {
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$aEmail = $this->access->readAttribute($this->dn, $emailAttribute);
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if(is_array($aEmail) && (count($aEmail) > 0)) {
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$email = strval($aEmail[0]);
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}
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}
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}
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if ($email !== '') {
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$user = $this->userManager->get($this->uid);
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if (!is_null($user)) {
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$currentEmail = strval($user->getEMailAddress());
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if ($currentEmail !== $email) {
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$user->setEMailAddress($email);
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}
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}
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}
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}
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/**
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* Overall process goes as follow:
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* 1. fetch the quota from LDAP and check if it's parseable with the "verifyQuotaValue" function
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* 2. if the value can't be fetched, is empty or not parseable, use the default LDAP quota
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* 3. if the default LDAP quota can't be parsed, use the Nextcloud's default quota (use 'default')
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* 4. check if the target user exists and set the quota for the user.
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*
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* In order to improve performance and prevent an unwanted extra LDAP call, the $valueFromLDAP
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* parameter can be passed with the value of the attribute. This value will be considered as the
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* quota for the user coming from the LDAP server (step 1 of the process) It can be useful to
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* fetch all the user's attributes in one call and use the fetched values in this function.
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* The expected value for that parameter is a string describing the quota for the user. Valid
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* values are 'none' (unlimited), 'default' (the Nextcloud's default quota), '1234' (quota in
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* bytes), '1234 MB' (quota in MB - check the \OC_Helper::computerFileSize method for more info)
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*
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* fetches the quota from LDAP and stores it as Nextcloud user value
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* @param string $valueFromLDAP the quota attribute's value can be passed,
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* to save the readAttribute request
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* @return null
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*/
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public function updateQuota($valueFromLDAP = null) {
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if($this->wasRefreshed('quota')) {
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return;
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}
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$quota = false;
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if(is_null($valueFromLDAP)) {
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$quotaAttribute = $this->connection->ldapQuotaAttribute;
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if ($quotaAttribute !== '') {
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$aQuota = $this->access->readAttribute($this->dn, $quotaAttribute);
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if($aQuota && (count($aQuota) > 0)) {
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if ($this->verifyQuotaValue($aQuota[0])) {
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$quota = $aQuota[0];
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} else {
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$this->log->log('not suitable LDAP quota found for user ' . $this->uid . ': [' . $aQuota[0] . ']', \OCP\Util::WARN);
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}
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}
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}
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} else {
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if ($this->verifyQuotaValue($valueFromLDAP)) {
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$quota = $valueFromLDAP;
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} else {
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$this->log->log('not suitable LDAP quota found for user ' . $this->uid . ': [' . $valueFromLDAP . ']', \OCP\Util::WARN);
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}
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}
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if ($quota === false) {
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// quota not found using the LDAP attribute (or not parseable). Try the default quota
|
|
$defaultQuota = $this->connection->ldapQuotaDefault;
|
|
if ($this->verifyQuotaValue($defaultQuota)) {
|
|
$quota = $defaultQuota;
|
|
}
|
|
}
|
|
|
|
$targetUser = $this->userManager->get($this->uid);
|
|
if ($targetUser) {
|
|
if($quota !== false) {
|
|
$targetUser->setQuota($quota);
|
|
} else {
|
|
$this->log->log('not suitable default quota found for user ' . $this->uid . ': [' . $defaultQuota . ']', \OCP\Util::WARN);
|
|
$targetUser->setQuota('default');
|
|
}
|
|
} else {
|
|
$this->log->log('trying to set a quota for user ' . $this->uid . ' but the user is missing', \OCP\Util::ERROR);
|
|
}
|
|
}
|
|
|
|
private function verifyQuotaValue($quotaValue) {
|
|
return $quotaValue === 'none' || $quotaValue === 'default' || \OC_Helper::computerFileSize($quotaValue) !== false;
|
|
}
|
|
|
|
/**
|
|
* called by a post_login hook to save the avatar picture
|
|
*
|
|
* @param array $params
|
|
*/
|
|
public function updateAvatarPostLogin($params) {
|
|
if(isset($params['uid']) && $params['uid'] === $this->getUsername()) {
|
|
$this->updateAvatar();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief attempts to get an image from LDAP and sets it as Nextcloud avatar
|
|
* @return null
|
|
*/
|
|
public function updateAvatar() {
|
|
if($this->wasRefreshed('avatar')) {
|
|
return;
|
|
}
|
|
$avatarImage = $this->getAvatarImage();
|
|
if($avatarImage === false) {
|
|
//not set, nothing left to do;
|
|
return;
|
|
}
|
|
$this->image->loadFromBase64(base64_encode($avatarImage));
|
|
$this->setOwnCloudAvatar();
|
|
}
|
|
|
|
/**
|
|
* @brief sets an image as Nextcloud avatar
|
|
* @return null
|
|
*/
|
|
private function setOwnCloudAvatar() {
|
|
if(!$this->image->valid()) {
|
|
$this->log->log('jpegPhoto data invalid for '.$this->dn, \OCP\Util::ERROR);
|
|
return;
|
|
}
|
|
//make sure it is a square and not bigger than 128x128
|
|
$size = min(array($this->image->width(), $this->image->height(), 128));
|
|
if(!$this->image->centerCrop($size)) {
|
|
$this->log->log('croping image for avatar failed for '.$this->dn, \OCP\Util::ERROR);
|
|
return;
|
|
}
|
|
|
|
if(!$this->fs->isLoaded()) {
|
|
$this->fs->setup($this->uid);
|
|
}
|
|
|
|
try {
|
|
$avatar = $this->avatarManager->getAvatar($this->uid);
|
|
$avatar->set($this->image);
|
|
} catch (\Exception $e) {
|
|
\OC::$server->getLogger()->notice(
|
|
'Could not set avatar for ' . $this->dn . ', because: ' . $e->getMessage(),
|
|
['app' => 'user_ldap']);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* called by a post_login hook to handle password expiry
|
|
*
|
|
* @param array $params
|
|
*/
|
|
public function handlePasswordExpiry($params) {
|
|
$ppolicyDN = $this->connection->ldapDefaultPPolicyDN;
|
|
if (empty($ppolicyDN) || (intval($this->connection->turnOnPasswordChange) !== 1)) {
|
|
return;//password expiry handling disabled
|
|
}
|
|
$uid = $params['uid'];
|
|
if(isset($uid) && $uid === $this->getUsername()) {
|
|
//retrieve relevant user attributes
|
|
$result = $this->access->search('objectclass=*', $this->dn, ['pwdpolicysubentry', 'pwdgraceusetime', 'pwdreset', 'pwdchangedtime']);
|
|
|
|
if(array_key_exists('pwdpolicysubentry', $result[0])) {
|
|
$pwdPolicySubentry = $result[0]['pwdpolicysubentry'];
|
|
if($pwdPolicySubentry && (count($pwdPolicySubentry) > 0)){
|
|
$ppolicyDN = $pwdPolicySubentry[0];//custom ppolicy DN
|
|
}
|
|
}
|
|
|
|
$pwdGraceUseTime = array_key_exists('pwdgraceusetime', $result[0]) ? $result[0]['pwdgraceusetime'] : null;
|
|
$pwdReset = array_key_exists('pwdreset', $result[0]) ? $result[0]['pwdreset'] : null;
|
|
$pwdChangedTime = array_key_exists('pwdchangedtime', $result[0]) ? $result[0]['pwdchangedtime'] : null;
|
|
|
|
//retrieve relevant password policy attributes
|
|
$cacheKey = 'ppolicyAttributes' . $ppolicyDN;
|
|
$result = $this->connection->getFromCache($cacheKey);
|
|
if(is_null($result)) {
|
|
$result = $this->access->search('objectclass=*', $ppolicyDN, ['pwdgraceauthnlimit', 'pwdmaxage', 'pwdexpirewarning']);
|
|
$this->connection->writeToCache($cacheKey, $result);
|
|
}
|
|
|
|
$pwdGraceAuthNLimit = array_key_exists('pwdgraceauthnlimit', $result[0]) ? $result[0]['pwdgraceauthnlimit'] : null;
|
|
$pwdMaxAge = array_key_exists('pwdmaxage', $result[0]) ? $result[0]['pwdmaxage'] : null;
|
|
$pwdExpireWarning = array_key_exists('pwdexpirewarning', $result[0]) ? $result[0]['pwdexpirewarning'] : null;
|
|
|
|
//handle grace login
|
|
$pwdGraceUseTimeCount = count($pwdGraceUseTime);
|
|
if($pwdGraceUseTime && $pwdGraceUseTimeCount > 0) { //was this a grace login?
|
|
if($pwdGraceAuthNLimit
|
|
&& (count($pwdGraceAuthNLimit) > 0)
|
|
&&($pwdGraceUseTimeCount < intval($pwdGraceAuthNLimit[0]))) { //at least one more grace login available?
|
|
$this->config->setUserValue($uid, 'user_ldap', 'needsPasswordReset', 'true');
|
|
header('Location: '.\OC::$server->getURLGenerator()->linkToRouteAbsolute(
|
|
'user_ldap.renewPassword.showRenewPasswordForm', array('user' => $uid)));
|
|
} else { //no more grace login available
|
|
header('Location: '.\OC::$server->getURLGenerator()->linkToRouteAbsolute(
|
|
'user_ldap.renewPassword.showLoginFormInvalidPassword', array('user' => $uid)));
|
|
}
|
|
exit();
|
|
}
|
|
//handle pwdReset attribute
|
|
if($pwdReset && (count($pwdReset) > 0) && $pwdReset[0] === 'TRUE') { //user must change his password
|
|
$this->config->setUserValue($uid, 'user_ldap', 'needsPasswordReset', 'true');
|
|
header('Location: '.\OC::$server->getURLGenerator()->linkToRouteAbsolute(
|
|
'user_ldap.renewPassword.showRenewPasswordForm', array('user' => $uid)));
|
|
exit();
|
|
}
|
|
//handle password expiry warning
|
|
if($pwdChangedTime && (count($pwdChangedTime) > 0)) {
|
|
if($pwdMaxAge && (count($pwdMaxAge) > 0)
|
|
&& $pwdExpireWarning && (count($pwdExpireWarning) > 0)) {
|
|
$pwdMaxAgeInt = intval($pwdMaxAge[0]);
|
|
$pwdExpireWarningInt = intval($pwdExpireWarning[0]);
|
|
if($pwdMaxAgeInt > 0 && $pwdExpireWarningInt > 0){
|
|
$pwdChangedTimeDt = \DateTime::createFromFormat('YmdHisZ', $pwdChangedTime[0]);
|
|
$pwdChangedTimeDt->add(new \DateInterval('PT'.$pwdMaxAgeInt.'S'));
|
|
$currentDateTime = new \DateTime();
|
|
$secondsToExpiry = $pwdChangedTimeDt->getTimestamp() - $currentDateTime->getTimestamp();
|
|
if($secondsToExpiry <= $pwdExpireWarningInt) {
|
|
//remove last password expiry warning if any
|
|
$notification = $this->notificationManager->createNotification();
|
|
$notification->setApp('user_ldap')
|
|
->setUser($uid)
|
|
->setObject('pwd_exp_warn', $uid)
|
|
;
|
|
$this->notificationManager->markProcessed($notification);
|
|
//create new password expiry warning
|
|
$notification = $this->notificationManager->createNotification();
|
|
$notification->setApp('user_ldap')
|
|
->setUser($uid)
|
|
->setDateTime($currentDateTime)
|
|
->setObject('pwd_exp_warn', $uid)
|
|
->setSubject('pwd_exp_warn_days', [strval(ceil($secondsToExpiry / 60 / 60 / 24))])
|
|
;
|
|
$this->notificationManager->notify($notification);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|