phpnuxbill/system/autoload/Admin.php

<?php
/**
 *  PHP Mikrotik Billing (https://github.com/hotspotbilling/phpnuxbill/)
 *  by https://t.me/ibnux
 **/


Class Admin{

    public static function getID(){
        global $db_password;
        if(isset($_SESSION['aid'])){
            return $_SESSION['aid'];
        }else if(isset($_COOKIE['aid'])){
            // id.time.sha1
            $tmp = explode('.',$_COOKIE['aid']);
            if(sha1($tmp[0].$tmp[1].$db_password)==$tmp[2]){
                if($tmp[1] < 86400*7){
                    $_SESSION['aid'] = $tmp[0];
                    return $tmp[0];
                }
            }
        }
        return 0;
    }

    public static function setCookie($aid){
        global $db_password;
        if(isset($aid)){
            $time = time();
            setcookie('aid', $aid.'.'.$time.'.'.sha1($aid.'.'.$time.'.'.$db_password), time()+86400*7);
        }
    }

    public static function removeCookie(){
        if(isset($_COOKIE['aid'])){
            setcookie('aid', '', time()-86400);
        }
    }

    public static function _info($id = 0){
        if(empty($id) && $id==0){
            $id = Admin::getID();
        }
        return ORM::for_table('tbl_users')->find_one($id);
    }
}