steamwrap/main.cpp

#include <QHttpServer>
#include <QTcpServer>
#include <QCoreApplication>
#include <QJsonObject>
#include <QJsonDocument>
#include <cstdlib>
#include <iostream>
#include <steam/steam_api.h>
#include <steam/steamclientpublic.h>

static bool isInitialized = false;

int main(int argc, char *argv[]) {
    QCoreApplication app(argc, argv);

    QHttpServer server;

    server.route("/init", QHttpServerRequest::Method::Post, [] (const QHttpServerRequest &request) {
        if (isInitialized) {
            return "";
        }

        const bool freeTrial = request.query().queryItemValue(QStringLiteral("ft")) == QStringLiteral("1");

        if (freeTrial) {
            putenv("SteamAppId=312060");
            putenv("SteamGameId=312060");
        } else {
            putenv("SteamAppId=39210");
            putenv("SteamGameId=39210");
        }

        if (!SteamAPI_Init()) {
            qFatal() << "Failed to initialize Steam API!";
        }

        qInfo() << "Initialized Steam API...";

        isInitialized = true;

        return "";
    });
    server.route("/shutdown", QHttpServerRequest::Method::Post, [] () {
        if (!isInitialized) {
            return "";
        }

        SteamAPI_Shutdown();

        qInfo() << "Shutting down Steam API!";

        return "";
    });
    server.route("/ticket", QHttpServerRequest::Method::Get, [] () {
        auto user = SteamAPI_GetHSteamUser();

        const int bufsize = 1024;
        char* buf = new char[bufsize];

        unsigned int length = 0;
        HAuthTicket ret = SteamUser()->GetAuthSessionTicket(buf, bufsize, &length, nullptr);

        QJsonObject response
        {
            {QStringLiteral("ticket"), QString::fromLatin1(QByteArray::fromRawData(buf, length).toHex())},
            {QStringLiteral("time"), QString::number(SteamUtils()->GetServerRealTime())}
        };

        return QJsonDocument(response).toJson(QJsonDocument::Compact);
    });

    auto tcpserver = new QTcpServer();
    if (!tcpserver->listen(QHostAddress::Any, 50481) || !server.bind(tcpserver)) {
        delete tcpserver;
        return -1;
    }

    qInfo() << "Listening on port" << tcpserver->serverPort();

    return QCoreApplication::exec();
}