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<?php
/**
* @author Arthur Schiwon <blizzz@owncloud.com>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Lukas Reschke <lukas@owncloud.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Stephan Peijnik <speijnik@anexia-it.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Group;
use OCP\IUserSession;
class MetaData {
const SORT_NONE = 0;
const SORT_USERCOUNT = 1; // May have performance issues on LDAP backends
const SORT_GROUPNAME = 2;
/** @var string */
protected $user;
/** @var bool */
protected $isAdmin;
/** @var array */
protected $metaData = array();
/** @var \OCP\IGroupManager */
protected $groupManager;
/** @var bool */
protected $sorting = false;
/** @var IUserSession */
protected $userSession;
/**
* @param string $user the uid of the current user
* @param bool $isAdmin whether the current users is an admin
* @param \OCP\IGroupManager $groupManager
* @param IUserSession $userSession
*/
public function __construct(
$user,
$isAdmin,
\OCP\IGroupManager $groupManager,
IUserSession $userSession
) {
$this->user = $user;
$this->isAdmin = (bool)$isAdmin;
$this->groupManager = $groupManager;
$this->userSession = $userSession;
}
/**
* returns an array with meta data about all available groups
* the array is structured as follows:
* [0] array containing meta data about admin groups
* [1] array containing meta data about unprivileged groups
* @param string $groupSearch only effective when instance was created with
* isAdmin being true
* @param string $userSearch the pattern users are search for
* @return array
*/
public function get($groupSearch = '', $userSearch = '') {
$key = $groupSearch . '::' . $userSearch;
if(isset($this->metaData[$key])) {
return $this->metaData[$key];
}
$adminGroups = array();
$groups = array();
$sortGroupsIndex = 0;
$sortGroupsKeys = array();
$sortAdminGroupsIndex = 0;
$sortAdminGroupsKeys = array();
foreach($this->getGroups($groupSearch) as $group) {
$groupMetaData = $this->generateGroupMetaData($group, $userSearch);
if (strtolower($group->getGID()) !== 'admin') {
$this->addEntry(
$groups,
$sortGroupsKeys,
$sortGroupsIndex,
$groupMetaData);
} else {
//admin group is hard coded to 'admin' for now. In future,
//backends may define admin groups too. Then the if statement
//has to be adjusted accordingly.
$this->addEntry(
$adminGroups,
$sortAdminGroupsKeys,
$sortAdminGroupsIndex,
$groupMetaData);
}
}
//whether sorting is necessary is will be checked in sort()
$this->sort($groups, $sortGroupsKeys);
$this->sort($adminGroups, $sortAdminGroupsKeys);
$this->metaData[$key] = array($adminGroups, $groups);
return $this->metaData[$key];
}
/**
* sets the sort mode, see SORT_* constants for supported modes
*
* @param int $sortMode
*/
public function setSorting($sortMode) {
switch ($sortMode) {
case self::SORT_USERCOUNT:
case self::SORT_GROUPNAME:
$this->sorting = $sortMode;
break;
default:
$this->sorting = self::SORT_NONE;
}
}
/**
* adds an group entry to the resulting array
* @param array $entries the resulting array, by reference
* @param array $sortKeys the sort key array, by reference
* @param int $sortIndex the sort key index, by reference
* @param array $data the group's meta data as returned by generateGroupMetaData()
*/
private function addEntry(&$entries, &$sortKeys, &$sortIndex, $data) {
$entries[] = $data;
if ($this->sorting === self::SORT_USERCOUNT) {
$sortKeys[$sortIndex] = $data['usercount'];
$sortIndex++;
} else if ($this->sorting === self::SORT_GROUPNAME) {
$sortKeys[$sortIndex] = $data['name'];
$sortIndex++;
}
}
/**
* creates an array containing the group meta data
* @param \OCP\IGroup $group
* @param string $userSearch
* @return array with the keys 'id', 'name' and 'usercount'
*/
private function generateGroupMetaData(\OCP\IGroup $group, $userSearch) {
return array(
'id' => $group->getGID(),
'name' => $group->getGID(),
'usercount' => $this->sorting === self::SORT_USERCOUNT ? $group->count($userSearch) : 0,
);
}
/**
* sorts the result array, if applicable
* @param array $entries the result array, by reference
* @param array $sortKeys the array containing the sort keys
* @param return null
*/
private function sort(&$entries, $sortKeys) {
if ($this->sorting === self::SORT_USERCOUNT) {
array_multisort($sortKeys, SORT_DESC, $entries);
} else if ($this->sorting === self::SORT_GROUPNAME) {
array_multisort($sortKeys, SORT_ASC, $entries);
}
}
/**
* returns the available groups
* @param string $search a search string
* @return \OCP\IGroup[]
*/
protected function getGroups($search = '') {
if($this->isAdmin) {
return $this->groupManager->search($search);
} else {
$userObject = $this->userSession->getUser();
if($userObject !== null) {
$groups = $this->groupManager->getSubAdmin()->getSubAdminsGroups($userObject);
} else {
$groups = [];
}
return $groups;
}
}
}
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