if (isset($_GET['login'])){
    require 'openid.php';
    function get_client_ip_env()
    {
        $ipaddress = '';
        if (getenv('HTTP_CLIENT_IP'))
            $ipaddress = getenv('HTTP_CLIENT_IP');
        else if(getenv('HTTP_X_FORWARDED_FOR'))
            $ipaddress = getenv('HTTP_X_FORWARDED_FOR');
        else if(getenv('HTTP_X_FORWARDED'))
            $ipaddress = getenv('HTTP_X_FORWARDED');
        else if(getenv('HTTP_FORWARDED_FOR'))
            $ipaddress = getenv('HTTP_FORWARDED_FOR');
        else if(getenv('HTTP_FORWARDED'))
            $ipaddress = getenv('HTTP_FORWARDED');
        else if(getenv('REMOTE_ADDR'))
            $ipaddress = getenv('REMOTE_ADDR');
        else
            $ipaddress = 'UNKNOWN';
        return $ipaddress;
    }
    $ipaddress=get_client_ip_env();

    try {
        require 'SteamConfig.php';
        $openid = new LightOpenID($steamauth['domainname']);

        if(!$openid->mode) {
            $openid->identity = 'http://steamcommunity.com/openid';
            header('Location: ' . $openid->authUrl());
        } elseif ($openid->mode == 'cancel') {
            echo 'User has canceled authentication!';
        } else {
            if($openid->validate()) {
                $id = $openid->identity;
                $ptn = "/^http:\/\/steamcommunity\.com\/openid\/id\/(7[0-9]{15,25}+)$/";
                preg_match($ptn, $id, $matches);

                $_SESSION['steamid'] = $matches[1];
                if (!headers_sent()) {
                            $servername = "localhost";
                            $username = "id4501784_website";
                            $password = "website";
                            $dbname = "id4501784_website";

                            $con = new mysqli($servername, $username, $password, $dbname);
                            if ($con->connect_error) {
                                die("Connection failed: " . $conn->connect_error);
                            }

                            $json_decoded = $content;
                            foreach ($json_decoded->response->players as $player)
                            {
                                $sql_fetch_id="SELECT * FROM users WHERE uid = $player->steamid";
                                $query_id = mysqli($con, $sql_fetch_id);
                                if(mysqli_num_rows($query_id) == 0)
                                {
                                    $insert=mysqli_query($con,"INSERT INTO users (uid, name, ip, playerLevel) VALUES (
                                        '".$steamprofile['steamid']."',
                                        '".$steamprofile['personaname']."',
                                        '$ipaddress',
                                        '0'
                                        )");
                                }
                            }




                    header('Location: '.$steamauth['loginpage']);
                    exit;
                } else {
                    ?>
                    <script type="text/javascript">
                        window.location.href="<?=$steamauth['loginpage']?>";
                    </script>
                    <noscript>
                        <meta http-equiv="refresh" content="0;url=<?=$steamauth['loginpage']?>" />
                    </noscript>
                    <?php
                    exit;
                }
            } else {
                echo "User is not logged in.\n";
            }
        }
    } catch(ErrorException $e) {
        echo $e->getMessage();
    }
}