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/* SPDX-License-Identifier: GPL-2.0
*
* Copyright (C) 2018-2021 WireGuard LLC. All Rights Reserved.
*/
#include <windows.h>
#include <delayimp.h>
#include <setupapi.h>
#include <devguid.h>
#include <shellapi.h>
#include <intsafe.h>
#include <stdlib.h>
#define EXPORT comment(linker, "/EXPORT:" __FUNCTION__ "=" __FUNCDNAME__)
static FARPROC WINAPI
DelayedLoadLibraryHook(unsigned dliNotify, PDelayLoadInfo pdli)
{
if (dliNotify != dliNotePreLoadLibrary)
return NULL;
HMODULE Library = LoadLibraryExA(pdli->szDll, NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
if (!Library)
abort();
return (FARPROC)Library;
}
const PfnDliHook __pfnDliNotifyHook2 = DelayedLoadLibraryHook;
static DWORD
WriteFormatted(_In_ DWORD StdHandle, _In_z_ LPCWSTR Template, ...)
{
LPWSTR FormattedMessage = NULL;
DWORD Size;
va_list Arguments;
va_start(Arguments, Template);
DWORD Len = FormatMessageW(
FORMAT_MESSAGE_FROM_STRING | FORMAT_MESSAGE_ALLOCATE_BUFFER,
Template,
0,
0,
(VOID *)&FormattedMessage,
0,
&Arguments);
if (SUCCEEDED(DWordMult(Len, sizeof(*FormattedMessage), &Size)))
WriteFile(GetStdHandle(StdHandle), FormattedMessage, Size, &Size, NULL);
else
Size = 0;
LocalFree(FormattedMessage);
va_end(Arguments);
return Size / sizeof(*FormattedMessage);
}
VOID __stdcall RemoveInstance(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow)
{
#pragma EXPORT
DWORD LastError = ERROR_SUCCESS;
int Argc;
LPWSTR *Argv = CommandLineToArgvW(GetCommandLineW(), &Argc);
if (Argc < 3)
goto cleanup;
WCHAR *InstanceId = Argv[2];
HDEVINFO DevInfo = SetupDiCreateDeviceInfoListExW(&GUID_DEVCLASS_NET, NULL, NULL, NULL);
if (DevInfo == INVALID_HANDLE_VALUE)
{
LastError = GetLastError();
goto cleanup;
}
SP_DEVINFO_DATA DevInfoData = { .cbSize = sizeof(DevInfoData) };
if (!SetupDiOpenDeviceInfoW(DevInfo, InstanceId, NULL, DIOD_INHERIT_CLASSDRVS, &DevInfoData))
{
LastError = GetLastError();
goto cleanupDevInfo;
}
SP_REMOVEDEVICE_PARAMS RemoveDeviceParams = { .ClassInstallHeader = { .cbSize = sizeof(SP_CLASSINSTALL_HEADER),
.InstallFunction = DIF_REMOVE },
.Scope = DI_REMOVEDEVICE_GLOBAL };
if (!SetupDiSetClassInstallParamsW(
DevInfo, &DevInfoData, &RemoveDeviceParams.ClassInstallHeader, sizeof(RemoveDeviceParams)) ||
!SetupDiCallClassInstaller(DIF_REMOVE, DevInfo, &DevInfoData))
{
LastError = GetLastError();
goto cleanupDevInfo;
}
cleanupDevInfo:
SetupDiDestroyDeviceInfoList(DevInfo);
cleanup:
LocalFree(Argv);
WriteFormatted(STD_OUTPUT_HANDLE, L"%1!X!", LastError);
}
VOID __stdcall EnableInstance(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow)
{
#pragma EXPORT
DWORD LastError = ERROR_SUCCESS;
int Argc;
LPWSTR *Argv = CommandLineToArgvW(GetCommandLineW(), &Argc);
if (Argc < 3)
goto cleanup;
WCHAR *InstanceId = Argv[2];
HDEVINFO DevInfo = SetupDiCreateDeviceInfoListExW(&GUID_DEVCLASS_NET, NULL, NULL, NULL);
if (DevInfo == INVALID_HANDLE_VALUE)
{
LastError = GetLastError();
goto cleanup;
}
SP_DEVINFO_DATA DevInfoData = { .cbSize = sizeof(DevInfoData) };
if (!SetupDiOpenDeviceInfoW(DevInfo, InstanceId, NULL, DIOD_INHERIT_CLASSDRVS, &DevInfoData))
{
LastError = GetLastError();
goto cleanupDevInfo;
}
SP_PROPCHANGE_PARAMS Params = { .ClassInstallHeader = { .cbSize = sizeof(SP_CLASSINSTALL_HEADER),
.InstallFunction = DIF_PROPERTYCHANGE },
.StateChange = DICS_ENABLE,
.Scope = DICS_FLAG_GLOBAL };
if (!SetupDiSetClassInstallParamsW(DevInfo, &DevInfoData, &Params.ClassInstallHeader, sizeof(Params)) ||
!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, DevInfo, &DevInfoData))
{
LastError = GetLastError();
goto cleanupDevInfo;
}
cleanupDevInfo:
SetupDiDestroyDeviceInfoList(DevInfo);
cleanup:
LocalFree(Argv);
WriteFormatted(STD_OUTPUT_HANDLE, L"%1!X!", LastError);
}
VOID __stdcall DisableInstance(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow)
{
#pragma EXPORT
DWORD LastError = ERROR_SUCCESS;
int Argc;
LPWSTR *Argv = CommandLineToArgvW(GetCommandLineW(), &Argc);
if (Argc < 3)
goto cleanup;
WCHAR *InstanceId = Argv[2];
HDEVINFO DevInfo = SetupDiCreateDeviceInfoListExW(&GUID_DEVCLASS_NET, NULL, NULL, NULL);
if (DevInfo == INVALID_HANDLE_VALUE)
{
LastError = GetLastError();
goto cleanup;
}
SP_DEVINFO_DATA DevInfoData = { .cbSize = sizeof(DevInfoData) };
if (!SetupDiOpenDeviceInfoW(DevInfo, InstanceId, NULL, DIOD_INHERIT_CLASSDRVS, &DevInfoData))
{
LastError = GetLastError();
goto cleanupDevInfo;
}
SP_PROPCHANGE_PARAMS Params = { .ClassInstallHeader = { .cbSize = sizeof(SP_CLASSINSTALL_HEADER),
.InstallFunction = DIF_PROPERTYCHANGE },
.StateChange = DICS_DISABLE,
.Scope = DICS_FLAG_GLOBAL };
if (!SetupDiSetClassInstallParamsW(DevInfo, &DevInfoData, &Params.ClassInstallHeader, sizeof(Params)) ||
!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, DevInfo, &DevInfoData))
{
LastError = GetLastError();
goto cleanupDevInfo;
}
cleanupDevInfo:
SetupDiDestroyDeviceInfoList(DevInfo);
cleanup:
LocalFree(Argv);
WriteFormatted(STD_OUTPUT_HANDLE, L"%1!X!", LastError);
}
#if NTDDI_VERSION == NTDDI_WIN7
#include "host_win7.h"
#endif
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