class.ilObjChatroomAccess.php

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<?php
/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Services/Object/classes/class.ilObjectAccess.php';
require_once 'Services/WebAccessChecker/interfaces/interface.ilWACCheckingClass.php';

class ilObjChatroomAccess extends ilObjectAccess implements ilWACCheckingClass
{
        private static $chat_enabled = null;

        public static function _getCommands()
        {
                $commands   = array();
                $commands[] = array("permission" => "read", "cmd" => "view", "lang_var" => "enter", "default" => true);
                $commands[] = array("permission" => "write", "cmd" => "settings-general", "lang_var" => "settings");

                // alex 3 Oct 2012: this leads to a blank screen, i guess it is a copy/paste bug from files
                //$commands[] = array("permission" => "write", "cmd" => "versions", "lang_var" => "versions");

                return $commands;
        }

        public static function _checkGoto($a_target)
        {
                global $rbacsystem;

                if(is_string($a_target))
                {
                        $t_arr = explode("_", $a_target);

                        if(count($t_arr) < 2 || $t_arr[0] != "chtr" || ((int)$t_arr[1]) <= 0)
                        {
                                return false;
                        }

                        if($rbacsystem->checkAccess("read", $t_arr[1]))
                        {
                                return true;
                        }
                }

                return false;
        }

        function _checkAccess($a_cmd, $a_permission, $a_ref_id, $a_obj_id, $a_user_id = "")
        {
                global $ilUser, $rbacsystem;

                if(self::$chat_enabled === null)
                {
                        $chatSetting        = new ilSetting('chatroom');
                        self::$chat_enabled = (boolean)$chatSetting->get('chat_enabled');
                }

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

                if($rbacsystem->checkAccessOfUser($a_user_id, 'write', $a_ref_id))
                {
                        return true;
                }

                return self::$chat_enabled;
        }

        public function canBeDelivered(ilWACPath $ilWACPath)
        {
                if(preg_match("/chatroom\\/smilies\\//ui", $ilWACPath->getPath()))
                {
                        return true;
                }

                return false;
        }
}