class.ilLearningProgressAccess.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | 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 General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

class ilLearningProgressAccess
{
        public static function checkPermission($a_permission, $a_ref_id , $a_user_id = null)
        {
                if(is_null($a_user_id))
                {
                        $a_user_id = $GLOBALS['ilUser']->getId();
                }
                
                // workaround for missing permission definitions in file object
                $type = ilObject::_lookupType($a_ref_id, true);
                if(
                        $type == 'file' && (
                                $a_permission == 'read_learning_progress' || 
                                $a_permission == 'edit_learning_progress'
                        )
                ) {
                        return $GLOBALS['ilAccess']->checkAccessOfUser($a_user_id, 'write','', $a_ref_id);
                }
                return $GLOBALS['ilAccess']->checkAccessOfUser($a_user_id, $a_permission,'', $a_ref_id);
        }
        
        
        public static function checkAccess($a_ref_id, $a_allow_only_read = true)
        {
                global $ilUser,$ilAccess;
                
                if($ilUser->getId() == ANONYMOUS_USER_ID)
                {
                        return false;
                }

                include_once("Services/Tracking/classes/class.ilObjUserTracking.php");
                if(!ilObjUserTracking::_enabledLearningProgress())
                {
                        return false;
                }
                
                // workaround for missing file object permissions
                if(ilObject::_lookupType($a_ref_id, true) == 'file' &&
                        $ilAccess->checkAccess('write','',$a_ref_id)
                )
                {
                        return true;
                }

                if($ilAccess->checkAccess('read_learning_progress','',$a_ref_id) ||
                        $ilAccess->checkAccess('edit_learning_progress','',$a_ref_id))
                {
                        return true;
                }
                
                if(!ilObjUserTracking::_hasLearningProgressLearner())
                {
                        return false;                   
                }
                
                include_once './Services/Object/classes/class.ilObjectLP.php';
                $olp = ilObjectLP::getInstance(ilObject::_lookupObjId($a_ref_id));
                if(!$olp->isActive())
                {
                        return false;
                }
                
                if(!$ilAccess->checkAccess('read','',$a_ref_id))
                {
                        return false;
                }
                
                if($a_allow_only_read)
                {
                        return true;
                }
                
                return false;
        }
}
?>