<?php

defined('ALT_PATH') or exit('No direct script access allowed');
// get username and password
$username = $_REQUEST['username'] ? $_REQUEST['username'] : '';
$password = $_REQUEST['password'] ? $_REQUEST['password'] : '';
// user already login and token is still valid, return previous token
if (System_Auth::islogin()) {
    $userdata = System_Auth::get_user_data();
    // check if login using previous username, return token
    if ($userdata['username'] == $username) {
        return System_Auth::get_token();
    }
    // logout
    $dbo = new System_Session();
    $res = $dbo->delete(array('where' => 'userid = ' . $dbo->quote($userdata['userid']) . ' and token like ' . $dbo->quote(System_Auth::get_token())));
    System_Auth::clear_token();
}
// user not logged in but token is exist, try to force logout
if (!System_Auth::islogin() && System_Auth::get_token() != '') {
    try {
        include 'logout.php';
    } catch (Exception $e) {
    }
}
// validate username and password
Alt_Validation::instance()->rule(Alt_Validation::not_empty($username), 'Username harus diisi!')->rule(Alt_Validation::not_empty($password), 'Password harus diisi!')->check();
// check is exist within database
$user = new System_User();
$res = $user->get(array('where' => 'username = ' . $user->quote($username)));
// user not found
<?php

defined('ALT_PATH') or exit('No direct script access allowed');
// get from previous token
$token = System_Auth::get_token($_REQUEST['token']);
// validate token and get userdata
$userdata = System_Auth::get_user_data($token, true);
// get from session
$dbo = new System_Session();
$res = $dbo->get(array('where' => 'userid = ' . $dbo->quote($userdata['userid']) . ' and token like ' . $dbo->quote($token)), true);
// token already logout
if (count($res) != 1) {
    throw new Alt_Exception('Token already logged out!');
}
// try to force logout
try {
    include 'logout.php';
} catch (Exception $e) {
}
// generate new token
$token = System_Auth::generate_token($userdata);
System_Auth::save_token($token);
// save to session
$session = new System_Session();
$session->insert(array('userid' => $userdata['userid'], 'token' => $token));
return $token;