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<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @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/>.
*
*/
/**
* error code for functions not provided by the group backend
*/
define('OC_GROUP_BACKEND_NOT_IMPLEMENTED', -501);
/**
* actions that user backends can define
*/
define('OC_GROUP_BACKEND_CREATE_GROUP', 0x00000001);
define('OC_GROUP_BACKEND_DELETE_GROUP', 0x00000010);
define('OC_GROUP_BACKEND_IN_GROUP', 0x00000100);
define('OC_GROUP_BACKEND_ADD_TO_GROUP', 0x00001000);
define('OC_GROUP_BACKEND_REMOVE_FROM_GOUP', 0x00010000);
define('OC_GROUP_BACKEND_GET_USER_GROUPS', 0x00100000);
define('OC_GROUP_BACKEND_GET_USERS', 0x01000000);
define('OC_GROUP_BACKEND_GET_GROUPS', 0x10000000);
/**
* Abstract base class for user management
*/
abstract class OC_Group_Backend {
protected $possibleActions = array(
OC_GROUP_BACKEND_CREATE_GROUP => 'createGroup',
OC_GROUP_BACKEND_DELETE_GROUP => 'deleteGroup',
OC_GROUP_BACKEND_IN_GROUP => 'inGroup',
OC_GROUP_BACKEND_ADD_TO_GROUP => 'addToGroup',
OC_GROUP_BACKEND_REMOVE_FROM_GOUP => 'removeFromGroup',
OC_GROUP_BACKEND_GET_USER_GROUPS => 'getUserGroups',
OC_GROUP_BACKEND_GET_USERS => 'usersInGroup',
OC_GROUP_BACKEND_GET_GROUPS => 'getGroups'
);
/**
* @brief Get all supported actions
* @returns bitwise-or'ed actions
*
* Returns the supported actions as int to be
* compared with OC_USER_BACKEND_CREATE_USER etc.
*/
public function getSupportedActions(){
$actions = 0;
foreach($this->possibleActions AS $action => $methodName){
if(method_exists($this, $methodName)) {
$actions |= $action;
}
}
return $actions;
}
/**
* @brief Check if backend implements actions
* @param $actions bitwise-or'ed actions
* @returns boolean
*
* Returns the supported actions as int to be
* compared with OC_GROUP_BACKEND_CREATE_GROUP etc.
*/
public function implementsActions($actions){
return (bool)($this->getSupportedActions() & $actions);
}
/**
* check if a group exists
* @param string $gid
* @return bool
*/
public function groupExists($gid){
if(!$this->implementsActions(OC_GROUP_BACKEND_GET_GROUPS)){
return false;
}
return in_array($gid, $this->getGroups());
}
}
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