login

<?php
    ob_start();
    session_start();
    if(isset($_SESSION['username'])) {
    	echo '<meta http-equiv="Refresh" Content="0; URL=error">';
        exit;
    }
?>
<!doctype html>
<html class="no-js" lang="en" dir="ltr">

<head>
    <meta charset="utf-8">
    <meta http-equiv="x-ua-compatible" content="ie=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Selamat datang di portal VPN</title>
    <link rel="stylesheet" href="css/foundation.css">
    <link rel="stylesheet" href="css/app.css">
</head>

<body class="background-login">
        <div class="grid-container">
            <div class="grid-x grid-padding-x grid-padding-y">
                <div class="large-12 text-center cell">
                    <h3>Selamat datang di portal VPN</h3>
                </div>
            </div>

            <div class="grid-x grid-padding-x">
                <div class="large-12 cell">
                    <div class="login-box">
                        <div class="row collapse expanded">
                            <form class="log-in-form" action="" method="post">
                            <div class="small-12 medium-6 column small-order-2 medium-order-1">
                                <div class="login-box-form-section">
                                    <div class="text-center">
                                        <img src="https://img.icons8.com/bubbles/50/000000/enter-2.png">
                                    </div>
                                    <input class="login-box-input" type="text" name="username" placeholder="Username" />
                                    <input class="login-box-input" type="password" name="password2" placeholder="Password" />
                                    <input class="login-box-submit-button" type="submit" name="login" value="Masuk" />
                                </div>
                            </div>
                            <div class="small-12 medium-6 column small-order-1 medium-order-2 login-box-social-section">
                                <div class="login-box-social-section-inner">
                                    <span class="login-box-social-headline">Tempat untuk mengelola VPN di manapun anda berada
                                    <?php
                                        session_start();
                                        require_once("connection/connection.php");

                                        if ($_POST['login']) {

                                        $username = $_POST['username'];
                                        $password2 = $_POST['password2'];

                                        $sql = "SELECT * FROM vpn_pengguna WHERE username = '$username'";
                                        $query = $db->query($sql);
                                        $hasil = $query->fetch(PDO::FETCH_ASSOC);

                                        if($username <> $hasil['username']) {
                                        echo "<div class='text-center'><h5>Nama pengguna belum terdaftar!</h5></div>";
                                        } else {
                                        if($password <> $hasil['password2']) {
                                        echo "<div class='text-center'><h5>Kata sandi salah!</h5></div>";
                                        } else {
                                        $_SESSION['user_id'] = $hasil['user_id'];
                                        $_SESSION['username'] = $hasil['username'];

                                        list($password2, $enc_iv) = explode("::", $password2);
                                        $cipher_method = 'aes-128-ctr';
                                        $enc_key = openssl_digest(php_uname(), 'SHA256', TRUE);
                                        $password = openssl_decrypt($password2, $cipher_method, $enc_key, 0, hex2bin($enc_iv));

                                        $_SESSION['password'] = $hasil['password'];
                                        $_SESSION['group_name'] = $hasil['group_name'];

                                        if($_SESSION['group_name'] == 'Administrator')
                                        echo '<div class="text-center"><h5>Mengarahkan ke halaman Admin</h5> <meta http-equiv="Refresh" Content="1; URL=admin"></div>';
                                        exit;
                                        }
                                    }
                                    }
                                    ?>
                                    </span>
                                </div>
                            </div>
                            </form>
                        </div>
                    </div>
            </div>
        </div>
    </div>

    <script src="js/vendor/jquery.js"></script>
    <script src="js/vendor/what-input.js"></script>
    <script src="js/vendor/foundation.js"></script>
    <script src="js/app.js"></script>
</body>

</html>