nextcloud/apps/user_ldap/lib/user/user.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\Connection;
use OCA\user_ldap\lib\FilesystemHelper;
use OCA\user_ldap\lib\LogWrapper;
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/**
* User
*
* represents an LDAP user, gets and holds user-specific information from LDAP
*/
class User {
/**
* @var IUserTools
*/
protected $access;
/**
* @var Connection
*/
protected $connection;
/**
* @var \OCP\IConfig
*/
protected $config;
/**
* @var FilesystemHelper
*/
protected $fs;
/**
* @var \OCP\Image
*/
protected $image;
/**
* @var LogWrapper
*/
protected $log;
/**
* @var \OCP\IAvatarManager
*/
protected $avatarManager;
/**
* @var string
*/
protected $dn;
/**
* @var string
*/
protected $uid;
/**
* @var string[]
*/
protected $refreshedFeatures = array();
/**
* @var string
*/
protected $avatarImage;
/**
* DB config keys for user preferences
*/
const USER_PREFKEY_FIRSTLOGIN = 'firstLoginAccomplished';
const USER_PREFKEY_LASTREFRESH = 'lastFeatureRefresh';
/**
* @brief constructor, make sure the subclasses call this one!
* @param string the internal username
* @param string the LDAP DN
* @param IUserTools $access an instance that implements IUserTools for
* LDAP interaction
* @param \OCP\Config
* @param FilesystemHelper
* @param \OCP\Image any empty instance
* @param LogWrapper
* @param \OCP\IAvatarManager
*/
public function __construct($username, $dn, IUserTools $access,
\OCP\IConfig $config, FilesystemHelper $fs, \OCP\Image $image,
LogWrapper $log, \OCP\IAvatarManager $avatarManager) {
$this->access = $access;
$this->connection = $access->getConnection();
$this->config = $config;
$this->fs = $fs;
$this->dn = $dn;
$this->uid = $username;
$this->image = $image;
$this->log = $log;
$this->avatarManager = $avatarManager;
}
/**
* @brief updates properties like email, quota or avatar provided by LDAP
* @return null
*/
public function update() {
if(is_null($this->dn)) {
return null;
}
$hasLoggedIn = $this->config->getUserValue($this->uid, 'user_ldap',
self::USER_PREFKEY_FIRSTLOGIN, 0);
if($this->needsRefresh()) {
$this->updateEmail();
$this->updateQuota();
if($hasLoggedIn !== 0) {
//we do not need to try it, when the user has not been logged in
//before, because the file system will not be ready.
$this->updateAvatar();
//in order to get an avatar as soon as possible, mark the user
//as refreshed only when updating the avatar did happen
$this->markRefreshTime();
}
}
}
/**
* @brief returns the LDAP DN of the user
* @return string
*/
public function getDN() {
return $this->dn;
}
/**
* @brief returns the ownCloud internal username of the user
* @return string
*/
public function getUsername() {
return $this->uid;
}
/**
* @brief reads the image from LDAP that shall be used as Avatar
* @return string data (provided by LDAP) | false
*/
public function getAvatarImage() {
if(!is_null($this->avatarImage)) {
return $this->avatarImage;
}
$this->avatarImage = false;
$attributes = array('jpegPhoto', 'thumbnailPhoto');
foreach($attributes as $attribute) {
$result = $this->access->readAttribute($this->dn, $attribute);
if($result !== false && is_array($result) && isset($result[0])) {
$this->avatarImage = $result[0];
break;
}
}
return $this->avatarImage;
}
/**
* @brief marks the user as having logged in at least once
* @return null
*/
public function markLogin() {
$this->config->setUserValue(
$this->uid, 'user_ldap', self::USER_PREFKEY_FIRSTLOGIN, 1);
}
/**
* @brief marks the time when user features like email have been updated
* @return null
*/
private function markRefreshTime() {
$this->config->setUserValue(
$this->uid, 'user_ldap', self::USER_PREFKEY_LASTREFRESH, time());
}
/**
* @brief checks whether user features needs to be updated again by
* comparing the difference of time of the last refresh to now with the
* desired interval
* @return bool
*/
private function needsRefresh() {
$lastChecked = $this->config->getUserValue($this->uid, 'user_ldap',
self::USER_PREFKEY_LASTREFRESH, 0);
//TODO make interval configurable
if((time() - intval($lastChecked)) < 86400 ) {
return false;
}
return true;
}
/**
* @brief checks whether an update method specified by feature was run
* already. If not, it will marked like this, because it is expected that
* the method will be run, when false is returned.
* @param string email | quota | avatar (can be extended)
* @return bool
*/
private function wasRefreshed($feature) {
if(isset($this->refreshedFeatures[$feature])) {
return true;
}
$this->refreshedFeatures[$feature] = 1;
return false;
}
/**
* @brief fetches the email from LDAP and stores it as ownCloud user value
* @return null
*/
public function updateEmail() {
if($this->wasRefreshed('email')) {
return;
}
$email = null;
$emailAttribute = $this->connection->ldapEmailAttribute;
if(!empty($emailAttribute)) {
$aEmail = $this->access->readAttribute($this->dn, $emailAttribute);
if($aEmail && (count($aEmail) > 0)) {
$email = $aEmail[0];
}
if(!is_null($email)) {
$this->config->setUserValue(
$this->uid, 'settings', 'email', $email);
}
}
}
/**
* @brief fetches the quota from LDAP and stores it as ownCloud user value
* @return null
*/
public function updateQuota() {
if($this->wasRefreshed('quota')) {
return;
}
$quota = null;
$quotaDefault = $this->connection->ldapQuotaDefault;
$quotaAttribute = $this->connection->ldapQuotaAttribute;
if(!empty($quotaDefault)) {
$quota = $quotaDefault;
}
if(!empty($quotaAttribute)) {
$aQuota = $this->access->readAttribute($this->dn, $quotaAttribute);
if($aQuota && (count($aQuota) > 0)) {
$quota = $aQuota[0];
}
}
if(!is_null($quota)) {
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$this->config->setUserValue($this->uid, 'files', 'quota', $quota);
}
}
/**
* @brief attempts to get an image from LDAP and sets it as ownCloud avatar
* @return null
*/
public function updateAvatar() {
if($this->wasRefreshed('avatar')) {
return;
}
$avatarImage = $this->getAvatarImage();
if($avatarImage === false) {
//not set, nothing left to do;
return;
}
$this->image->loadFromBase64(base64_encode($avatarImage));
$this->setOwnCloudAvatar();
}
/**
* @brief sets an image as ownCloud avatar
* @return null
*/
private function setOwnCloudAvatar() {
if(!$this->image->valid()) {
$this->log->log('user_ldap', 'jpegPhoto data invalid for '.$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)) {
$this->log->log('user_ldap',
'croping image for avatar failed for '.$this->dn,
\OCP\Util::ERROR);
return;
}
if(!$this->fs->isLoaded()) {
$this->fs->setup($this->uid);
}
$avatar = $this->avatarManager->getAvatar($this->uid);
$avatar->set($this->image);
}
}