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/* SPDX-License-Identifier: GPL-2.0
*
* Copyright (C) 2018-2020 WireGuard LLC. All Rights Reserved.
*/
#include "entry.h"
#if ACCEPT_WOW64 == 1
# include "adapter.h"
# include "logger.h"
# include "wintun.h"
# include <Windows.h>
# include <cfgmgr32.h>
# include <objbase.h>
# include <assert.h>
# define EXPORT comment(linker, "/EXPORT:" __FUNCTION__ "=" __FUNCDNAME__)
static DWORD
WriteFormatted(_In_ DWORD StdHandle, _In_z_ const WCHAR *Template, ...)
{
WCHAR *FormattedMessage = NULL;
DWORD SizeWritten;
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);
WriteFile(GetStdHandle(StdHandle), FormattedMessage, Len * sizeof(WCHAR), &SizeWritten, NULL);
LocalFree(FormattedMessage);
va_end(Arguments);
return SizeWritten / sizeof(WCHAR);
}
static BOOL CALLBACK
ConsoleLogger(_In_ WINTUN_LOGGER_LEVEL Level, _In_z_ const WCHAR *LogLine)
{
const WCHAR *Template;
switch (Level)
{
case WINTUN_LOG_INFO:
Template = L"[+] %1\n";
break;
case WINTUN_LOG_WARN:
Template = L"[-] %1\n";
break;
case WINTUN_LOG_ERR:
Template = L"[!] %1\n";
break;
default:
return FALSE;
}
WriteFormatted(STD_ERROR_HANDLE, Template, LogLine);
return TRUE;
}
static int Argc;
static WCHAR **Argv;
static void
Init(void)
{
WintunSetLogger(ConsoleLogger);
Argv = CommandLineToArgvW(GetCommandLineW(), &Argc);
}
static void
Done(void)
{
LocalFree(Argv);
}
# pragma warning(disable : 4100) /* unreferenced formal parameter */
VOID __stdcall CreateAdapter(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow)
{
# pragma EXPORT
Init();
if (Argc < 4)
goto cleanup;
if (wcslen(Argv[2]) >= WINTUN_MAX_POOL)
goto cleanup;
if (wcslen(Argv[3]) >= MAX_ADAPTER_NAME)
goto cleanup;
GUID RequestedGUID;
if (Argc > 4 && FAILED(CLSIDFromString(Argv[4], &RequestedGUID)))
goto cleanup;
BOOL RebootRequired;
WINTUN_ADAPTER *Adapter = WintunCreateAdapter(Argv[2], Argv[3], Argc > 4 ? &RequestedGUID : NULL, &RebootRequired);
DWORD LastError = Adapter ? ERROR_SUCCESS : GetLastError();
WCHAR GuidStr[MAX_GUID_STRING_LEN];
WriteFormatted(
STD_OUTPUT_HANDLE,
L"%1!X! %2!.*s! %3!X!",
LastError,
StringFromGUID2(Adapter ? &Adapter->CfgInstanceID : &GUID_NULL, GuidStr, _countof(GuidStr)),
GuidStr,
RebootRequired);
if (Adapter)
WintunFreeAdapter(Adapter);
cleanup:
Done();
}
VOID __stdcall DeleteAdapter(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow)
{
# pragma EXPORT
Init();
if (Argc < 3)
goto cleanup;
WINTUN_ADAPTER Adapter = { 0 };
BOOL ForceCloseSessions = wcstoul(Argv[2], NULL, 10);
if (FAILED(CLSIDFromString(Argv[3], &Adapter.CfgInstanceID)))
goto cleanup;
BOOL RebootRequired;
DWORD LastError =
WintunDeleteAdapter(&Adapter, ForceCloseSessions, &RebootRequired) ? ERROR_SUCCESS : GetLastError();
WriteFormatted(STD_OUTPUT_HANDLE, L"%1!X! %2!X!", LastError, RebootRequired);
cleanup:
Done();
}
VOID __stdcall DeletePoolDriver(HWND hwnd, HINSTANCE hinst, LPSTR lpszCmdLine, int nCmdShow)
{
# pragma EXPORT
Init();
if (Argc < 2)
goto cleanup;
BOOL RebootRequired;
DWORD LastError = WintunDeletePoolDriver(Argv[2], &RebootRequired) ? ERROR_SUCCESS : GetLastError();
WriteFormatted(STD_OUTPUT_HANDLE, L"%1!X! %2!X!", LastError, RebootRequired);
cleanup:
Done();
}
#endif
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