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sources/apps/user_external/lib/base.php
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<?php
/**
* Copyright (c) 2014 Christian Weiske <cweiske@cweiske.de>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OCA\user_external;
use \OC_DB;
/**
* Base class for external auth implementations that stores users
* on their first login in a local table.
* This is required for making many of the user-related ownCloud functions
* work, including sharing files with them.
*
* @category Apps
* @package UserExternal
* @author Christian Weiske <cweiske@cweiske.de>
* @license http://www.gnu.org/licenses/agpl AGPL
* @link http://github.com/owncloud/apps
*/
abstract class Base extends \OC_User_Backend{
protected $backend = '';
/**
* Create new instance, set backend name
*
* @param string $backend Identifier of the backend
*/
public function __construct($backend) {
$this->backend = $backend;
}
/**
* Delete a user
*
* @param string $uid The username of the user to delete
*
* @return bool
*/
public function deleteUser($uid) {
OC_DB::executeAudited(
'DELETE FROM `*PREFIX*users_external` WHERE `uid` = ? AND `backend` = ?',
array($uid, $this->backend)
);
return true;
}
/**
* Get display name of the user
*
* @param string $uid user ID of the user
*
* @return string display name
*/
public function getDisplayName($uid) {
$user = OC_DB::executeAudited(
'SELECT `displayname` FROM `*PREFIX*users_external`'
. ' WHERE `uid` = ? AND `backend` = ?',
array($uid, $this->backend)
)->fetchRow();
$displayName = trim($user['displayname'], ' ');
if (!empty($displayName)) {
return $displayName;
} else {
return $uid;
}
}
/**
* Get a list of all display names and user ids.
*
* @return array with all displayNames (value) and the corresponding uids (key)
*/
public function getDisplayNames($search = '', $limit = null, $offset = null) {
$result = OC_DB::executeAudited(
array(
'sql' => 'SELECT `uid`, `displayname` FROM `*PREFIX*users_external`'
. ' WHERE (LOWER(`displayname`) LIKE LOWER(?) '
. ' OR LOWER(`uid`) LIKE LOWER(?)) AND `backend` = ?',
'limit' => $limit,
'offset' => $offset
),
array($search . '%', $search . '%', $this->backend)
);
$displayNames = array();
while ($row = $result->fetchRow()) {
$displayNames[$row['uid']] = $row['displayname'];
}
return $displayNames;
}
/**
* Get a list of all users
*
* @return array with all uids
*/
public function getUsers($search = '', $limit = null, $offset = null) {
$result = OC_DB::executeAudited(
array(
'sql' => 'SELECT `uid` FROM `*PREFIX*users_external`'
. ' WHERE LOWER(`uid`) LIKE LOWER(?) AND `backend` = ?',
'limit' => $limit,
'offset' => $offset
),
array($search . '%', $this->backend)
);
$users = array();
while ($row = $result->fetchRow()) {
$users[] = $row['uid'];
}
return $users;
}
/**
* Determines if the backend can enlist users
*
* @return bool
*/
public function hasUserListings() {
return true;
}
/**
* Change the display name of a user
*
* @param string $uid The username
* @param string $displayName The new display name
*
* @return true/false
*/
public function setDisplayName($uid, $displayName) {
if (!$this->userExists($uid)) {
return false;
}
OC_DB::executeAudited(
'UPDATE `*PREFIX*users_external` SET `displayname` = ?'
. ' WHERE LOWER(`uid`) = ? AND `backend` = ?',
array($displayName, $uid, $this->backend)
);
return true;
}
/**
* Create user record in database
*
* @param string $uid The username
*
* @return void
*/
protected function storeUser($uid)
{
if (!$this->userExists($uid)) {
OC_DB::executeAudited(
'INSERT INTO `*PREFIX*users_external` ( `uid`, `backend` )'
. ' VALUES( ?, ? )',
array($uid, $this->backend)
);
}
}
/**
* Check if a user exists
*
* @param string $uid the username
*
* @return boolean
*/
public function userExists($uid) {
$result = OC_DB::executeAudited(
'SELECT COUNT(*) FROM `*PREFIX*users_external`'
. ' WHERE LOWER(`uid`) = LOWER(?) AND `backend` = ?',
array($uid, $this->backend)
);
return $result->fetchOne() > 0;
}
}
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