steamauth_example.cpp

#define _CRT_SECURE_NO_WARNINGS
#include <Windows.h>
#include "steam/steam_api.h"
#include <string>
#include <iostream>
#include <iomanip>
#include <sstream>

static char authTicketCallbackCalled = false;
static char authTicketCallbackError = false;


// a class that does nothing other than register itself as a Steam
// callback listener when it is constructed
class AuthTicketListener {

public:
    AuthTicketListener()
        // initializing this member object is what actually
        // registers our callback
        : mAuthSessionTicketResponse(
        this,
        &AuthTicketListener::OnAuthSessionTicketResponse) {
    }


    // callback when our AuthSessionTicket is ready
    // this macro declares our callback function for us AND
    // defines our member object
    STEAM_CALLBACK(
        // class that the callback function is in
        AuthTicketListener,
        // name of callback function
        OnAuthSessionTicketResponse,
        // type of callback
        GetAuthSessionTicketResponse_t,
        // name of the member object       
        mAuthSessionTicketResponse);


};

void AuthTicketListener::OnAuthSessionTicketResponse(
    GetAuthSessionTicketResponse_t *inCallback) {

    std::cout << "OnAuthSessionTicketResponse" << std::endl;

    authTicketCallbackCalled = true;

    if (inCallback->m_eResult != k_EResultOK) {
        authTicketCallbackError = true;
    }
}




int main() {
    if (!SteamAPI_Init()) {
        MessageBoxA(NULL, "steam init failed.", "error", 0);
        exit(1);
    }
    unsigned char buf[4096];
    unsigned int buf_size;
    AuthTicketListener *listener = new AuthTicketListener();
    
    auto ticket = SteamUser()->GetAuthSessionTicket(buf, 4096, &buf_size);
    std::ostringstream hex_ticket;

    while (!authTicketCallbackCalled) {
        Sleep(100);
        SteamAPI_RunCallbacks();
    }

    for (unsigned int i = 0; i < buf_size; i++) {
        hex_ticket << std::setfill('0') << std::setw(2) << std::uppercase << std::hex << int(buf[i]);
    }
    std::cout << "ticket: " << hex_ticket.str() << std::endl;
    return 0;
}