<?
if(!defined("ACT"))
    die();

class auth {
    var $mysql_host = "localhost";
    var $mysql_username = "username";
    var $mysql_password = "password";
    var $mysql_db = "database";
    var $prefix = "prefix";
    var $cookiepre = "cp_";
    var $sessionLength = 10000;
    var $cache = array();
    function __construct() {
        mysql_connect($this->mysql_host,$this->mysql_username,$this->mysql_password);
        mysql_select_db($this->mysql_db);
    }
    function isLogged() {
        if(!isset($_COOKIE[$this->cookiepre."id"],$_COOKIE[$this->cookiepre."pass"]))
            return false;
        if(isset($this->cache['isLogged']))
            return $this->cache['isLogged'];
        $id = mysql_real_escape_string($_COOKIE[$this->cookiepre."id"]);
        $query = mysql_query("SELECT `password`,`salt` FROM `".$this->prefix."users` WHERE `id`='$id'");
        if(mysql_num_rows($query) == 0) {
            $this->cache['isLogged'] = false;
            return false;
        }
        $user = mysql_fetch_array($query);
        $password = md5($user['password'].$user['salt']);
        if($_COOKIE[$this->cookiepre."pass"] == $password) {
            $this->cache['isLogged'] = true;
            return true;
        }
        else {
            $this->cache['isLogged'] = false;
            return false;
        }
    }
    function login($username,$password,$remember = false) {
        if(!isset($username,$password))
            return false;
        if($remember)
            $session = 1209600;
        else
            $session = $this->sessionLength;
        $username = mysql_real_escape_string(strtolower($username));
        $password = md5($password);
        $query = mysql_query("SELECT `salt`,`id` FROM `".$this->prefix."users` WHERE `username`='$username' AND `password`='$password'") or die(mysql_error());
        if(mysql_num_rows($query) == 0)
            return false;
        $user = mysql_fetch_array($query);
        $salty = md5($password.$user['salt']);
        setcookie($this->cookiepre."id",$user['id'],time()+$session);
        setcookie($this->cookiepre."pass",$salty,time()+$session);
        return true;
    }
    function logOut() {
        if(!$this->isLogged())
            return false;
        setcookie($this->cookiepre."id",$user['id'],time()-500);
        setcookie($this->cookiepre."pass",$salty,time()-500);
        return true;
    }
}
?>