nextcloud/lib/private/group/manager.php

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<?php
/**
* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Group;
use OC\Hooks\PublicEmitter;
/**
* Class Manager
*
* Hooks available in scope \OC\Group:
* - preAddUser(\OC\Group\Group $group, \OC\User\User $user)
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* - postAddUser(\OC\Group\Group $group, \OC\User\User $user)
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* - preRemoveUser(\OC\Group\Group $group, \OC\User\User $user)
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* - postRemoveUser(\OC\Group\Group $group, \OC\User\User $user)
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* - preDelete(\OC\Group\Group $group)
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* - postDelete(\OC\Group\Group $group)
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* - preCreate(string $groupId)
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* - postCreate(\OC\Group\Group $group)
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*
* @package OC\Group
*/
class Manager extends PublicEmitter {
/**
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* @var \OC_Group_Backend[]|\OC_Group_Database[] $backends
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*/
private $backends = array();
/**
* @var \OC\User\Manager $userManager
*/
private $userManager;
/**
* @var \OC\Group\Group[]
*/
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private $cachedGroups = array();
/**
* @var \OC\Group\Group[]
*/
private $cachedUserGroups = array();
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/**
* @param \OC\User\Manager $userManager
*/
public function __construct($userManager) {
$this->userManager = $userManager;
$cachedGroups = & $this->cachedGroups;
$cachedUserGroups = & $this->cachedUserGroups;
$this->listen('\OC\Group', 'postDelete', function ($group) use (&$cachedGroups, &$cachedUserGroups) {
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/**
* @var \OC\Group\Group $group
*/
unset($cachedGroups[$group->getGID()]);
$cachedUserGroups = array();
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});
$this->listen('\OC\Group', 'postAddUser', function ($group) use (&$cachedUserGroups) {
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/**
* @var \OC\Group\Group $group
*/
$cachedUserGroups = array();
});
$this->listen('\OC\Group', 'postRemoveUser', function ($group) use (&$cachedUserGroups) {
/**
* @var \OC\Group\Group $group
*/
$cachedUserGroups = array();
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});
}
/**
* @param \OC_Group_Backend $backend
*/
public function addBackend($backend) {
$this->backends[] = $backend;
}
public function clearBackends() {
$this->backends = array();
$this->cachedGroups = array();
}
/**
* @param string $gid
* @return \OC\Group\Group
*/
public function get($gid) {
if (isset($this->cachedGroups[$gid])) {
return $this->cachedGroups[$gid];
}
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return $this->getGroupObject($gid);
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}
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protected function getGroupObject($gid) {
$backends = array();
foreach ($this->backends as $backend) {
if ($backend->groupExists($gid)) {
$backends[] = $backend;
}
}
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if (count($backends) === 0) {
return null;
}
$this->cachedGroups[$gid] = new Group($gid, $backends, $this->userManager, $this);
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return $this->cachedGroups[$gid];
}
/**
* @param string $gid
* @return bool
*/
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public function groupExists($gid) {
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return !is_null($this->get($gid));
}
/**
* @param string $gid
* @return \OC\Group\Group
*/
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public function createGroup($gid) {
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if (!$gid) {
return false;
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} else if ($group = $this->get($gid)) {
return $group;
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} else {
$this->emit('\OC\Group', 'preCreate', array($gid));
foreach ($this->backends as $backend) {
if ($backend->implementsActions(OC_GROUP_BACKEND_CREATE_GROUP)) {
$backend->createGroup($gid);
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$group = $this->getGroupObject($gid);
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$this->emit('\OC\Group', 'postCreate', array($group));
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return $group;
}
}
return null;
}
}
/**
* @param string $search
* @param int $limit
* @param int $offset
* @return \OC\Group\Group[]
*/
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public function search($search, $limit = null, $offset = null) {
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$groups = array();
foreach ($this->backends as $backend) {
$groupIds = $backend->getGroups($search, $limit, $offset);
foreach ($groupIds as $groupId) {
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$groups[$groupId] = $this->get($groupId);
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}
if (!is_null($limit) and $limit <= 0) {
return array_values($groups);
}
}
return array_values($groups);
}
/**
* @param \OC\User\User $user
* @return \OC\Group\Group[]
*/
public function getUserGroups($user) {
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$uid = $user->getUID();
if (isset($this->cachedUserGroups[$uid])) {
return $this->cachedUserGroups[$uid];
}
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$groups = array();
foreach ($this->backends as $backend) {
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$groupIds = $backend->getUserGroups($uid);
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foreach ($groupIds as $groupId) {
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$groups[$groupId] = $this->get($groupId);
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}
}
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$this->cachedUserGroups[$uid] = array_values($groups);
return $this->cachedUserGroups[$uid];
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}
/**
* @brief get a list of all display names in a group
* @param string $gid
* @param string $search
* @param int $limit
* @param int $offset
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* @return array an array of display names (value) and user ids (key)
*/
public function displayNamesInGroup($gid, $search = '', $limit = -1, $offset = 0) {
$group = $this->get($gid);
if(is_null($group)) {
return array();
}
// only user backends have the capability to do a complex search for users
$groupUsers = $group->searchUsers('', $limit, $offset);
$search = trim($search);
if(!empty($search)) {
//TODO: for OC 7 earliest: user backend should get a method to check selected users against a pattern
$filteredUsers = $this->userManager->search($search);
$testUsers = true;
} else {
$filteredUsers = array();
$testUsers = false;
}
$matchingUsers = array();
foreach($groupUsers as $user) {
if(!$testUsers || isset($filteredUsers[$user->getUID()])) {
$matchingUsers[$user->getUID()] = $user->getDisplayName();
}
}
return $matchingUsers;
}
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}