nextcloud/lib/private/group.php

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<?php
/**
* ownCloud
*
* @author Frank Karlitschek
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* @copyright 2012 Frank Karlitschek frank@owncloud.org
*
* 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/>.
*
*/
/**
* This class provides all methods needed for managing groups.
*
* Hooks provided:
* pre_createGroup(&run, gid)
* post_createGroup(gid)
* pre_deleteGroup(&run, gid)
* post_deleteGroup(gid)
* pre_addToGroup(&run, uid, gid)
* post_addToGroup(uid, gid)
* pre_removeFromGroup(&run, uid, gid)
* post_removeFromGroup(uid, gid)
*/
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class OC_Group {
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/**
* @var \OC\Group\Manager $manager
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*/
private static $manager;
/**
* @var \OC\User\Manager
*/
private static $userManager;
/**
* @return \OC\Group\Manager
*/
public static function getManager() {
if (self::$manager) {
return self::$manager;
}
self::$userManager = \OC_User::getManager();
self::$manager = new \OC\Group\Manager(self::$userManager);
return self::$manager;
}
/**
* @brief set the group backend
* @param \OC_Group_Backend $backend The backend to use for user managment
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* @return bool
*/
public static function useBackend($backend) {
self::getManager()->addBackend($backend);
return true;
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}
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/**
* remove all used backends
*/
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public static function clearBackends() {
self::getManager()->clearBackends();
}
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/**
* @brief Try to create a new group
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* @param string $gid The name of the group to create
* @return bool
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*
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* Tries to create a new group. If the group name already exists, false will
* be returned. Basic checking of Group name
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*/
public static function createGroup($gid) {
OC_Hook::emit("OC_Group", "pre_createGroup", array("run" => true, "gid" => $gid));
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if (self::getManager()->createGroup($gid)) {
OC_Hook::emit("OC_User", "post_createGroup", array("gid" => $gid));
return true;
} else {
return false;
}
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}
/**
* @brief delete a group
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* @param string $gid gid of the group to delete
* @return bool
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*
* Deletes a group and removes it from the group_user-table
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*/
public static function deleteGroup($gid) {
// Prevent users from deleting group admin
if ($gid == "admin") {
return false;
}
OC_Hook::emit("OC_Group", "pre_deleteGroup", array("run" => true, "gid" => $gid));
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$group = self::getManager()->get($gid);
if ($group) {
if ($group->delete()) {
OC_Hook::emit("OC_User", "post_deleteGroup", array("gid" => $gid));
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return true;
}
}
return false;
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}
/**
* @brief is user in group?
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* @param string $uid uid of the user
* @param string $gid gid of the group
* @return bool
*
* Checks whether the user is member of a group or not.
*/
public static function inGroup($uid, $gid) {
$group = self::getManager()->get($gid);
$user = self::$userManager->get($uid);
if ($group and $user) {
return $group->inGroup($user);
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}
return false;
}
/**
* @brief Add a user to a group
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* @param string $uid Name of the user to add to group
* @param string $gid Name of the group in which add the user
* @return bool
*
* Adds a user to a group.
*/
public static function addToGroup($uid, $gid) {
$group = self::getManager()->get($gid);
$user = self::$userManager->get($uid);
if ($group and $user) {
OC_Hook::emit("OC_Group", "pre_addToGroup", array("run" => true, "uid" => $uid, "gid" => $gid));
$group->addUser($user);
OC_Hook::emit("OC_User", "post_addToGroup", array("uid" => $uid, "gid" => $gid));
return true;
} else {
return false;
}
}
/**
* @brief Removes a user from a group
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* @param string $uid Name of the user to remove from group
* @param string $gid Name of the group from which remove the user
* @return bool
*
* removes the user from a group.
*/
public static function removeFromGroup($uid, $gid) {
$group = self::getManager()->get($gid);
$user = self::$userManager->get($uid);
if ($group and $user) {
OC_Hook::emit("OC_Group", "pre_removeFromGroup", array("run" => true, "uid" => $uid, "gid" => $gid));
$group->removeUser($user);
OC_Hook::emit("OC_User", "post_removeFromGroup", array("uid" => $uid, "gid" => $gid));
return true;
} else {
return false;
}
}
/**
* @brief Get all groups a user belongs to
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* @param string $uid Name of the user
* @return array with group names
*
* This function fetches all groups a user belongs to. It does not check
* if the user exists at all.
*/
public static function getUserGroups($uid) {
$user = self::$userManager->get($uid);
if ($user) {
$groups = self::getManager()->getUserGroups($user);
$groupIds = array();
foreach ($groups as $group) {
$groupIds[] = $group->getGID();
}
return $groupIds;
} else {
return array();
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}
}
/**
* @brief get a list of all groups
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* @param string $search
* @param int|null $limit
* @param int|null $offset
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* @return array with group names
*
* Returns a list with all groups
*/
public static function getGroups($search = '', $limit = null, $offset = null) {
$groups = self::getManager()->search($search, $limit, $offset);
$groupIds = array();
foreach ($groups as $group) {
$groupIds[] = $group->getGID();
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}
return $groupIds;
}
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/**
* check if a group exists
*
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* @param string $gid
* @return bool
*/
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public static function groupExists($gid) {
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return self::getManager()->groupExists($gid);
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}
/**
* @brief get a list of all users in a group
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* @param string $gid
* @param string $search
* @param int $limit
* @param int $offset
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* @return array with user ids
*/
public static function usersInGroup($gid, $search = '', $limit = -1, $offset = 0) {
$group = self::getManager()->get($gid);
if ($group) {
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$users = $group->searchUsers($search, $limit, $offset);
$userIds = array();
foreach ($users as $user) {
$userIds[] = $user->getUID();
}
return $userIds;
} else {
return array();
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}
}
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/**
* @brief get a list of all users in several groups
* @param string[] $gids
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* @param string $search
* @param int $limit
* @param int $offset
* @return array with user ids
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*/
public static function usersInGroups($gids, $search = '', $limit = -1, $offset = 0) {
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$users = array();
foreach ($gids as $gid) {
// TODO Need to apply limits to groups as total
$users = array_merge(array_diff(self::usersInGroup($gid, $search, $limit, $offset), $users), $users);
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}
return $users;
}
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/**
* @brief get a list of all display names in a group
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* @param string $gid
* @param string $search
* @param int $limit
* @param int $offset
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* @return array with display names (value) and user ids(key)
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*/
public static function displayNamesInGroup($gid, $search = '', $limit = -1, $offset = 0) {
return self::getManager()->displayNamesInGroup($gid, $search, $limit, $offset);
}
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/**
* @brief get a list of all display names in several groups
* @param array $gids
* @param string $search
* @param int $limit
* @param int $offset
* @return array with display names (Key) user ids (value)
*/
public static function displayNamesInGroups($gids, $search = '', $limit = -1, $offset = 0) {
$displayNames = array();
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foreach ($gids as $gid) {
// TODO Need to apply limits to groups as total
$diff = array_diff(
self::displayNamesInGroup($gid, $search, $limit, $offset),
$displayNames
);
if ($diff) {
$displayNames = array_merge($diff, $displayNames);
}
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}
return $displayNames;
}
}