class.ilObjSAHSLearningModuleAccess.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. |
    +-----------------------------------------------------------------------------+
*/

include_once("classes/class.ilObjectAccess.php");

class ilObjSAHSLearningModuleAccess extends ilObjectAccess
{
    function _checkAccess($a_cmd, $a_permission, $a_ref_id, $a_obj_id, $a_user_id = "")
    {
        global $ilUser, $lng, $rbacsystem, $ilAccess;

        if ($a_user_id == "")
        {
            $a_user_id = $ilUser->getId();
        }

        switch ($a_cmd)
        {
            case "view":

                if(!ilObjSAHSLearningModuleAccess::_lookupOnline($a_obj_id)
                    && !$rbacsystem->checkAccessOfUser($a_user_id,'write',$a_ref_id))
                {
                    $ilAccess->addInfoItem(IL_NO_OBJECT_ACCESS, $lng->txt("offline"));
                    return false;
                }
                break;
        }

        switch ($a_permission)
        {
            case "visible":
                if (!ilObjSAHSLearningModuleAccess::_lookupOnline($a_obj_id) &&
                    (!$rbacsystem->checkAccessOfUser($a_user_id,'write', $a_ref_id)))
                {
                    $ilAccess->addInfoItem(IL_NO_OBJECT_ACCESS, $lng->txt("offline"));
                    return false;
                }
                break;
        }


        return true;
    }
    
    function _getCommands()
    {
        $commands = array
        (
            array("permission" => "read", "cmd" => "view", "lang_var" => "show",
                "default" => true),
            array("permission" => "write", "cmd" => "edit", "lang_var" => "edit"),
        );
        
        return $commands;
    }

    //
    // access relevant methods
    //

    function _lookupOnline($a_id)
    {
        global $ilDB;

        $set = $ilDB->queryF('SELECT * FROM sahs_lm WHERE id = %s', 
        array('integer'), array($a_id));
        $rec = $ilDB->fetchAssoc($set);
        
        return ilUtil::yn2tf($rec["c_online"]);
    }
    
    static function _lookupEditable($a_obj_id)
    {
                global $ilDB;
                
                $set = $ilDB->queryF('SELECT * FROM sahs_lm WHERE id = %s', 
                        array('integer'), array($a_obj_id));
                $rec = $ilDB->fetchAssoc($set);

                return $rec["editable"];
    }
    

    function _checkGoto($a_target)
    {
        global $ilAccess;
        
        $t_arr = explode("_", $a_target);

        if ($t_arr[0] != "sahs" || ((int) $t_arr[1]) <= 0)
        {
            return false;
        }

        if ($ilAccess->checkAccess("visible", "", $t_arr[1]))
        {
            return true;
        }
        return false;
    }

    function _lookupDiskUsage($a_id)
    {
        $lm_data_dir = ilUtil::getWebspaceDir('filesystem')."/lm_data";
        $lm_dir = $lm_data_dir.DIRECTORY_SEPARATOR."lm_".$a_id;
        
        return file_exists($lm_dir) ? ilUtil::dirsize($lm_dir) : 0;
        
    }

        public static function _lookupCertificate($a_id)
        {
                $certificatefile = CLIENT_WEB_DIR . "/certificates/scorm/" . $a_id . "/certificate.xml";
                if (@file_exists($certificatefile))
                {
                        return (ilSetting::_lookupValue('scorm', 'certificate_'.$a_id) == 1) ? true : false;
                }
                else
                {
                        return false;
                }
        }
        
        public static function _lookupUserCertificate($obj_id, $usr_id = 0)
        {
                global $ilUser;
                $uid = ($usr_id) ? $usr_id : $ilUser->getId();
                
                $completed = false;
                // check for certificates
                if (ilObjSAHSLearningModuleAccess::_lookupCertificate($obj_id))
                {
                        $lpdata = false;
                        include_once "./Modules/ScormAicc/classes/class.ilObjSAHSLearningModule.php";
                        $type = ilObjSAHSLearningModule::_lookupSubType($obj_id);
                        include_once("Services/Tracking/classes/class.ilObjUserTracking.php");
                        if (ilObjUserTracking::_enabledLearningProgress())
                        {
                                include_once "./Services/Tracking/classes/class.ilLPStatusWrapper.php";
                                $completed_user_ids_array = ilLPStatusWrapper::_getCompleted($obj_id);
                                if (in_array($uid, $completed_user_ids_array))
                                {
                                        $completed = true;
                                }
                                $lpdata = true;
                        }
                        switch ($type)
                        {
                                case "scorm":
                                        if (!$lpdata)
                                        {
                                                include_once "./Modules/ScormAicc/classes/class.ilObjSCORMLearningModule.php";
                                                $completed = ilObjSCORMLearningModule::_getCourseCompletionForUser($obj_id, $uid);
                                        }
                                        break;
                                case "scorm2004":
                                        if (!$lpdata)
                                        {
                                                include_once "./Modules/Scorm2004/classes/class.ilObjSCORM2004LearningModule.php";
                                                $completed = ilObjSCORM2004LearningModule::_getCourseCompletionForUser($obj_id, $uid);
                                        }
                                        break;
                                default:
                                        break;
                        }
                }
                return $completed;
        }

        static function _isOffline($a_obj_id)
        {
                return !self::_lookupOnline($a_obj_id);
        }
}

?>