Steam login routine

void http::steam_login(const QString &uname, const QString &pwd)
{
    QNetworkProxy fiddler(QNetworkProxy::HttpProxy, "localhost", 8887);
    QNetworkProxy::setApplicationProxy(fiddler);
    this->login_state = 0; //log out
    delete this->cookieJar();
    this->setCookieJar(new QNetworkCookieJar());
    QString SG, emailsteamid, encrypted_password, pkey_mod, pkey_exp, timestamp;
    QByteArray buffer;
    QJsonDocument json_buffer;
    QNetworkCookie steam_timezone;
    steam_timezone.setDomain(".steampowered.com");
    steam_timezone.setPath("/");
    steam_timezone.setName("timezoneOffset");
    steam_timezone.setValue((QString::number(app::getTimeZoneOffset().toInt() * 3600) + ",0").toUtf8());
    this->cookieJar()->insertCookie(steam_timezone);
    QNetworkRequest request;
    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded; charset=utf-8");
    request.setUrl(steam_getrsa);
    this->sync_post(request, QString("l=english").toUtf8());
    this->sync_post(request, QString("l=english").toUtf8());
    app::Application->log("Started Steam login process for \""+uname+"\"",1);
    QNetworkReply *reply = this->sync_post(request, QString("username=" + uname + "&l=english").toUtf8());
    buffer = reply->readAll();
    json_buffer = QJsonDocument::fromJson(buffer);
    delete reply;
    QStringList temp = json_buffer.object().keys();
    QString tee = json_buffer.object().empty();
    if (!json_buffer.object().value("success").toBool())
    {
        app::Application->log("Login failure at stage  for user"+uname, 2);
        return;
    }
    pkey_mod = json_buffer.object().value("publickey_mod").toString();
    pkey_exp = json_buffer.object().value("publickey_exp").toString();
    timestamp = json_buffer.object().value("timestamp").toString();
    encrypted_password = get_encrypted_password(pwd, pkey_mod, pkey_exp);
    request.setUrl(steam_dologin);
    reply = this->sync_post(request, QString("username=" + uname + "&password=" + percent_encode(encrypted_password) + "&rsatimestamp=" + timestamp).toUtf8());
    buffer = reply->readAll();
    json_buffer = QJsonDocument::fromJson(buffer);
    delete reply;
    if (json_buffer.object().value("message").toString() != "SteamGuard")
    {
        app::Application->log("Login failure at stage 2 for user"+uname, 2);
        return;
    }
    emailsteamid = json_buffer.object().value("emailsteamid").toString();
    SG = app::Application->query("Enter Steam Guard code for \"" + uname+"\": ");
    SG = SG.toUpper();
    encrypted_password = get_encrypted_password(pwd, pkey_mod, pkey_exp);
    reply = this->sync_post(request, QString("username=" + uname + "&password=" + percent_encode(encrypted_password) + "&emailauth=" + SG + "&emailsteamid=" + emailsteamid + "&rsatimestamp=" + timestamp + "&remember_login=true").toUtf8());
    buffer = reply->readAll();
    json_buffer = QJsonDocument::fromJson(buffer);
    if (!json_buffer.object().value("login_complete").toBool())
    {
        app::Application->log("Login failure at stage 3 for user"+uname, 2);
        return;
    }
    pkey_mod = json_buffer.object().value("transfer_parameters").toObject().value("steamid").toString();
    pkey_exp = json_buffer.object().value("transfer_parameters").toObject().value("token").toString();
    timestamp = json_buffer.object().value("transfer_parameters").toObject().value("webcookie").toString();
    request.setUrl(steam_transfer);
    this->sync_post(request,QString("steamid="+pkey_mod+"&token="+pkey_exp+"&remember_login=true&webcookie="+timestamp).toUtf8());
    this->cookieJar()->setCookiesFromUrl(this->cookieJar()->cookiesForUrl(QUrl("https://store.steampowered.com/")),QUrl("http://steamcommunity.com/"));
    QNetworkCookie temp_cookie;
    QList<QNetworkCookie> cookies = this->cookieJar()->cookiesForUrl(steam_getrsa);
    for (int i=0;i<cookies.size();i++){
        temp_cookie=cookies[i];
        temp_cookie.setDomain(".steamcommunity.com");
        this->cookieJar()->insertCookie(temp_cookie);
    }
    app::Application->log("Successfully logged in as \""+uname+"\"",1);
}