File Source for login.php

<?php
/**
* @package linea21.core
* @subpackage admin
* @author linea21 <info@linea21.com>
* @version $id SVN
* @access public
* @license http://opensource.org/licenses/gpl-3.0.html
*/
ob_start();
session_start();
include_once("../config/define.php");
include_once("../lib/no_cache.php");
include_once('../languages/' . U_L . '/lang_common.'. CHARSET .'.php');
include_once("../class/system/class." . SQL . ".php");
IncludeUserfiles();
include_once(SQL . ".inc.php");
// if page var is not empty we pass the reference to the form
if(isset($_REQUEST['page'])) $page = $_REQUEST['page'];
else $page = '';
// ////////////////////////////////////
// TENTATIVE D'AUTHENTIFICATION
// ////////////////////////////////////
if (isset($_POST['valid'])) {
$auth_res = $l21auth->logIn($_POST['login'], $_POST['password'], 'ADMIN');
if ($auth_res === true) {
// if page var is not empty we reconnect to the given page
if(!empty($_POST['page'])) {
$goto = $_POST['page'];
header("Location: ".$goto);
exit();
}
// else we reconnect to the last page (stored in cookie)
if(isset($_COOKIE['linea21_lastactivity']) && $_POST['login'] == $_COOKIE['linea21_lastuser']) {
$goto = $_COOKIE['linea21_lastpage'];
// up to 3 hours of inactivity, we send the user to the latest consulted page
$lastcon_date = (integer) date("YmdGi", $_COOKIE['linea21_lastactivity']);
$buffer_date = $lastcon_date + (3 * 60);
$current_date = (integer) date('YmdGi', time());
if($current_date < $buffer_date && isset($_COOKIE['linea21_lastpage'])) {
header("Location: ".$goto);
exit();
} else {
header("Location: index.php");
exit();
}
}
else {
header("Location: index.php");
exit();
}
}
}
include_once(THEME_ADMIN_PATH."login.php");
$sql_object -> DBClose();
if(isset($Dbg)) $Dbg->display();
ob_end_flush();
?>

Source for file login.php