/* $Id: VBoxNetLwfUninstall.cpp $ */
/** @file
 * NetLwfUninstall - VBoxNetLwf uninstaller command line tool
 */

/*
 * Copyright (C) 2014-2023 Oracle and/or its affiliates.
 *
 * This file is part of VirtualBox base platform packages, as
 * available from https://www.virtualbox.org.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation, in version 3 of the
 * License.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <https://www.gnu.org/licenses>.
 *
 * The contents of this file may alternatively be used under the terms
 * of the Common Development and Distribution License Version 1.0
 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
 * in the VirtualBox distribution, in which case the provisions of the
 * CDDL are applicable instead of those of the GPL.
 *
 * You may elect to license modified versions of this file under the
 * terms and conditions of either the GPL or the CDDL or both.
 *
 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
 */


/*********************************************************************************************************************************
*   Header Files                                                                                                                 *
*********************************************************************************************************************************/
#include <VBox/VBoxNetCfg-win.h>

#include <iprt/initterm.h>
#include <iprt/message.h>
#include <iprt/utf16.h>


/*********************************************************************************************************************************
*   Defined Constants And Macros                                                                                                 *
*********************************************************************************************************************************/
#define VBOX_NETCFG_APP_NAME L"NetLwfUninstall"
#define VBOX_NETLWF_RETRIES 10


static DECLCALLBACK(void) winNetCfgLogger(const char *pszString)
{
    RTMsgInfo("%s", pszString);
}

static int VBoxNetLwfUninstall()
{
    int rcExit = RTEXITCODE_FAILURE;

    VBoxNetCfgWinSetLogging(winNetCfgLogger);

    HRESULT hr = CoInitialize(NULL);
    if (hr == S_OK)
    {
        for (int i = 0;; i++)
        {
            LPWSTR pwszLockedBy = NULL;
            INetCfg *pnc = NULL;
            hr = VBoxNetCfgWinQueryINetCfg(&pnc, TRUE, VBOX_NETCFG_APP_NAME, 10000, &pwszLockedBy);
            if (hr == S_OK)
            {
                hr = VBoxNetCfgWinNetLwfUninstall(pnc);
                if (hr == S_OK)
                {
                    RTMsgInfo("uninstalled successfully!");
                    rcExit = RTEXITCODE_SUCCESS;
                }
                else
                    RTMsgError("error uninstalling VBoxNetLwf: %Rhrc");

                VBoxNetCfgWinReleaseINetCfg(pnc, TRUE);
                break;
            }

            if (hr == NETCFG_E_NO_WRITE_LOCK && pwszLockedBy)
            {
                if (i < VBOX_NETLWF_RETRIES && RTUtf16ICmpAscii(pwszLockedBy, "6to4svc.dll") == 0)
                {
                    RTMsgInfo("6to4svc.dll is holding the lock - retry %d out of %d ...", i + 1, VBOX_NETLWF_RETRIES);
                    CoTaskMemFree(pwszLockedBy);
                }
                else
                {
                    RTMsgError("Write lock is owned by another application (%ls), close the application and retry uninstalling",
                               pwszLockedBy);
                    CoTaskMemFree(pwszLockedBy);
                    break;
                }
            }
            else
            {
                RTMsgError("Failed getting the INetCfg interface: %Rhrc", hr);
                break;
            }
        }

        CoUninitialize();
    }
    else
        RTMsgError("Failed initializing COM: %Rhrc", hr);

    VBoxNetCfgWinSetLogging(NULL);

    return rcExit;
}

int __cdecl main(int argc, char **argv)
{
    RTR3InitExeNoArguments(0);
    if (argc != 1)
        return RTMsgErrorExit(RTEXITCODE_SYNTAX, "This utility takes no arguments\n");
    NOREF(argv);

    return VBoxNetLwfUninstall();
}