//  OpenVPN 3 Linux client -- Next generation OpenVPN client
//
//  SPDX-License-Identifier: AGPL-3.0-only
//
//  Copyright (C) 2017 - 2023  OpenVPN Inc <sales@openvpn.net>
//  Copyright (C) 2017 - 2023  David Sommerseth <davids@openvpn.net>
//

/**
 * @file   conncreds.cpp
 *
 * @brief  Simple test program reporting back the credentials of
 *         a running D-Bus service.  Input is the D-Bus bus name,
 *         either the well known bus name (like net.openvpn.v3.sessions)
 *         or the unique bus name (:1.39).  The output is PID and the users
 *         UID providing this service.
 */

#include <iostream>
#include "dbus/core.hpp"
#include "dbus/connection-creds.hpp"

using namespace openvpn;

int main(int argc, char **argv)
{
    if (argc != 2)
    {
        std::cerr << "Usage: " << argv[0] << " <D-Bus bus name>" << std::endl;
        return 2;
    }

    std::string busname(argv[1]);
    DBus conn(G_BUS_TYPE_SYSTEM);
    conn.Connect();
    DBusConnectionCreds creds(conn.GetConnection());

    uid_t uid = creds.GetUID(std::string(busname));
    pid_t pid = creds.GetPID(std::string(busname));
    std::string busid = creds.GetUniqueBusID(std::string(busname));

    std::cout << "Querying credential information for bus name '"
              << busname << "' ... " << std::endl
              << "      User ID: " << std::to_string(uid)
              << std::endl
              << "   Process ID: " << std::to_string(pid)
              << std::endl
              << "Unique Bus ID: " << busid
              << std::endl;
    return 0;
}