class.ilObjGroupAccess.php

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<?php

/* Copyright (c) 1998-2011 ILIAS open source, Extended GPL, see docs/LICENSE */

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

class ilObjGroupAccess 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 "info":
                        
                                include_once './Modules/Group/classes/class.ilGroupParticipants.php';
                                if(ilGroupParticipants::_isParticipant($a_ref_id,$a_user_id))
                                {
                                        $ilAccess->addInfoItem(IL_STATUS_MESSAGE, $lng->txt("info_is_member"));
                                }
                                else
                                {
                                        $ilAccess->addInfoItem(IL_STATUS_MESSAGE, $lng->txt("info_is_not_member"));
                                }                                               
                                break;
                                
                        case "join":
                        
                                include_once './Modules/Group/classes/class.ilGroupWaitingList.php';
                                if(ilGroupWaitingList::_isOnList($ilUser->getId(), $a_obj_id))
                                {
                                        return false;
                                }

                                include_once './Modules/Group/classes/class.ilGroupParticipants.php';
                                if(ilGroupParticipants::_isParticipant($a_ref_id,$a_user_id))
                                {
                                        return false;
                                }
                                break;
                                
                        case 'leave':

                                // Regular member
                                if($a_permission == 'leave')
                                {
                                        include_once './Modules/Group/classes/class.ilGroupParticipants.php';
                                        if(!ilGroupParticipants::_isParticipant($a_ref_id, $a_user_id))
                                        {
                                                return false;
                                        }
                                }
                                // Waiting list
                                if($a_permission == 'join')
                                {
                                        include_once './Modules/Group/classes/class.ilGroupWaitingList.php';
                                        if(!ilGroupWaitingList::_isOnList($ilUser->getId(), $a_obj_id))
                                        {
                                                return false;
                                        }
                                }
                                break;
                                
                }

                switch ($a_permission)
                {

                }
                return true;
        }

        function _getCommands()
        {
                $commands = array();
                $commands[] = array("permission" => "read", "cmd" => "view", "lang_var" => "show", "default" => true);
                $commands[] = array("permission" => "join", "cmd" => "join", "lang_var" => "join");

                // on waiting list
                $commands[]     = array('permission' => "join", "cmd" => "leave", "lang_var" => "leave_waiting_list");
                
                // regualar users
                $commands[]     = array('permission' => "leave", "cmd" => "leave", "lang_var" => "grp_btn_unsubscribe");
                
                include_once ('Services/WebDAV/classes/class.ilDAVActivationChecker.php');
                if (ilDAVActivationChecker::_isActive())
                {
                        include_once './Services/WebDAV/classes/class.ilDAVUtils.php';
                        if(ilDAVUtils::getInstance()->isLocalPasswordInstructionRequired())
                        {
                                $commands[] = array('permission' => 'read', 'cmd' => 'showPasswordInstruction', 'lang_var' => 'mount_webfolder', 'enable_anonymous' => 'false');
                        }
                        else
                        {
                                $commands[] = array("permission" => "read", "cmd" => "mount_webfolder", "lang_var" => "mount_webfolder", "enable_anonymous" => "false");
                        }
                }

                $commands[] = array("permission" => "write", "cmd" => "edit", "lang_var" => "edit");
                
                return $commands;
        }
        
        function _checkGoto($a_target)
        {
                global $ilAccess,$ilUser;
                
                // registration codes
                if(substr($t_arr[2],0,5) == 'rcode' and $ilUser->getId() != ANONYMOUS_USER_ID)
                {
                        return true;
                }
                
                
                $t_arr = explode("_", $a_target);

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

                if ($ilAccess->checkAccess("read", "", $t_arr[1]) ||
                        $ilAccess->checkAccess("visible", "", $t_arr[1]))
                {
                        return true;
                }
                return false;
        }
        
        public static function _registrationEnabled($a_obj_id)
        {
                global $ilDB;

                $query = "SELECT * FROM grp_settings ".
                        "WHERE obj_id = ".$ilDB->quote($a_obj_id ,'integer')." ";

                $res = $ilDB->query($query);
                
                $enabled = $unlimited = false;
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $enabled = $row->registration_enabled;
                        $unlimited = $row->registration_unlimited;
                        $start = $row->registration_start;
                        $end = $row->registration_end;
                }

                if(!$enabled)
                {
                        return false;
                }
                if($unlimited)
                {
                        return true;
                }
                
                if(!$unlimited)
                {
                        $start = new ilDateTime($start,IL_CAL_DATETIME,'UTC');
                        $end = new ilDateTime($end,IL_CAL_DATETIME,'UTC');
                        $time = new ilDateTime(time(),IL_CAL_UNIX);
                        
                        return ilDateTime::_after($time, $start) and ilDateTime::_before($time,$end); 
                }
                return false;
        }
        

        function _preloadData($a_obj_ids, $a_ref_ids)
        {
                global $ilDB, $ilUser;
                
                include_once("./Modules/Group/classes/class.ilGroupWaitingList.php");
                ilGroupWaitingList::_preloadOnListInfo($ilUser->getId(), $a_obj_ids);
        }

}
?>