class.ilObjMediaCastAccess.php

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<?php

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

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

class ilObjMediaCastAccess extends ilObjectAccess
{
    protected $user;

    protected $lng;

    protected $rbacsystem;

    protected $access;


    public function __construct()
    {
        global $DIC;

        $this->user = $DIC->user();
        $this->lng = $DIC->language();
        $this->rbacsystem = $DIC->rbac()->system();
        $this->access = $DIC->access();
    }


    public static function _getCommands()
    {
        $commands = array(
            array("permission" => "read", "cmd" => "showContent", "lang_var" => "show",
                "default" => true),
            array("permission" => "write", "cmd" => "listItems", "lang_var" => "edit_content"),
            array("permission" => "write", "cmd" => "editSettings", "lang_var" => "settings")
        );
        
        return $commands;
    }
    
    public function _checkAccess($a_cmd, $a_permission, $a_ref_id, $a_obj_id, $a_user_id = "")
    {
        $ilUser = $this->user;
        $lng = $this->lng;
        $rbacsystem = $this->rbacsystem;
        $ilAccess = $this->access;

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

        switch ($a_cmd) {
            case "listItems":

                if (!ilObjMediaCastAccess::_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;
                
            // for permission query feature
            case "infoScreen":
                if (!ilObjMediaCastAccess::_lookupOnline($a_obj_id)) {
                    $ilAccess->addInfoItem(IL_NO_OBJECT_ACCESS, $lng->txt("offline"));
                } else {
                    $ilAccess->addInfoItem(IL_STATUS_MESSAGE, $lng->txt("online"));
                }
                break;

        }
        switch ($a_permission) {
            case "read":
            case "visible":
                if (!ilObjMediaCastAccess::_lookupOnline($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;
    }

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

        $ilAccess = $DIC->access();
        
        $t_arr = explode("_", $a_target);

        if ($t_arr[0] != "mcst" || ((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 _lookupOnline($a_id)
    {
        global $DIC;

        $ilDB = $DIC->database();

        $q = "SELECT * FROM il_media_cast_data WHERE id = " . $ilDB->quote($a_id);
        $mc_set = $ilDB->query($q);
        $mc_rec = $mc_set->fetchRow(ilDBConstants::FETCHMODE_ASSOC);

        return $mc_rec["is_online"];
    }

    public static function _lookupPublicFiles($a_id)
    {
        global $DIC;

        $ilDB = $DIC->database();

        $q = "SELECT * FROM il_media_cast_data WHERE id = " . $ilDB->quote($a_id);
        $mc_set = $ilDB->query($q);
        $mc_rec = $mc_set->fetchRow(ilDBConstants::FETCHMODE_ASSOC);

        return $mc_rec["public_files"];
    }

    public static function _lookupDiskUsage($a_id)
    {
        require_once('Modules/MediaCast/classes/class.ilObjMediaCast.php');
        require_once("./Services/News/classes/class.ilNewsItem.php");
        require_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");
        $obj = new ilObjMediaCast($a_id, false);
        $obj->read();
        $items = $obj->getItemsArray();
        $size = 0;
        foreach ($items as $item) {
            $news_item = new ilNewsItem($item["id"]);
            $news_item->read();
            $mobId = $news_item->getMobId();
            $size += ilUtil::dirsize(ilObjMediaObject::_getDirectory($mobId));
        }
        return $size;
    }
}