<?
function rewrite($db){

        /* test if first argument a username or folder */

        $name = SQLite3::escapeString("$_GET[name]");

        $name_id_db = $db->query("SELECT id FROM user WHERE name='" . $name . "';");
        $name_id_ar = $name_id_db->fetchArray(SQLITE3_NUM);

        if(empty($name_id_ar)){

                /* if first argument wasn't valid, rewrite the URL to include the username */

                if($_SESSION["login"]){
                        header("Refresh: 0; /" . $_SESSION[username] . "/" . $_GET["name"] . "/" . $_GET["folder"] . "");
                        exit;
                } else {

                        $wrong_folder = $_GET["name"];
                        $working_path = $_GET["name"];

                        get_404($working_path, $wrong_folder);
			return false;
                }
                return false;
        }

        return true;
}