<?php
if (isset($_GET['login'])){
    require 'openid.php';
    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()) {
                ///////////////////////////////////////////////////////////////
                $_STEAMAPI = "APIKEY";/////change////
                $servername = "HOST";/////change////
                $username = "USERNAME";/////change////
                $password = "PASSWORD";/////change////
                $dbname = "DATABASENAME";/////change////

                $con = new mysqli($servername, $username, $password, $dbname);
                if ($con->connect_error) {
                    die("Connection failed: " . $conn->connect_error);
                }
                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();
                ///////////////////////////////////////////////////////////////
                $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()) {
                    ///////////////////////////////////////////////////////////////
                    $url = "http://api.steampowered.com/ISteamUser/GetPlayerSummaries/v0002/?key=$_STEAMAPI&steamids=$matches[1]";
                    $json_object= file_get_contents($url);
                    $json_decoded = json_decode($json_object);

                    foreach ($json_decoded->response->players as $player)
                    {
                        $sql="SELECT * FROM users WHERE uid = $player->steamid";
                        if ($result=mysqli_query($con,$sql))
                          {
                          $finalresult=mysqli_num_rows($result);
                          mysqli_free_result($result);
                          }
                        if($finalresult == 0)
                        {
                            $insert=("INSERT INTO users (uid, name, ip, playerLevel) VALUES ('" . $player->steamid . "', '" . $player->personaname . "', '$ipaddress', '$finalresult')");
                            mysqli_query($con, $insert);
                        }
                    }
                    ///////////////////////////////////////////////////////////////
                    header('Location: '.$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();
    }
}