c_auth

<?php   class Auth extends CI_Controller {
    function __construct() {
        parent::__construct();
        $this->load->model('m_auth');
    }
    public function index() {
        $session = $this->session->userdata('isLogin');
        if($session == FALSE) {
            redirect('auth/login');
        }else {
            redirect('depan');
       }
    }
    public function login(){
        $this->form_validation->set_rules('username', 'Username', 'required|trim|min_lenght[5]|max_lenght[20]|xss_clean');
        $this->form_validation->set_rules('password', 'Password', 'required|min_lenght[5]|max_lenght[20]|xss_clean|md5');
        $this->form_validation->set_error_delimiters('<br>');
        if($this->form_validation->run() == FALSE) {
            $this->load->view('login');
        }else {
                $username = $this->input->post('username');
                $password = $this->input->post('password');
                $cek = $this->m_auth->cek_pengguna($username, $password);
                if($cek->num_rows() <> 0) {
                    $user = $cek->row();
                    $this->session->set_userdata('isLogin', TRUE);
                    $this->session->set_userdata('username', $username);
                    $this->session->set_userdata('role', $user->role);
                    $this->session->set_userdata('namalengkap', $user->namalengkap);
                    $this->session->set_userdata('logindate', $user->tgl_login);
                    $this->session->set_userdata('ip_login', $user->ip_login);

                    //input data terakhir
                    $now = date('Y-m-d h:i:s');
                    $ip = $_SERVER['REMOTE_ADDR'];
                    $data_user = array( 'tgl_login'=>$now, 'ip_login'=>$ip );
                    $this->m_auth->update_data_user($data_user, $username);
                    redirect('depan');

                }else {
                    $this->session->set_flashdata('pesan', '<div class="alert alert-danger">Username dan Password salah!</div>');
                    $this->load->view('login');
                }
        }
    }
    public function logout() {
        $this->session->sess_destroy();
        redirect('auth/login');
    }
}