351 lines
12 KiB
C
351 lines
12 KiB
C
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/* SPDX-License-Identifier: GPL-2.0
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*
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* Copyright (C) 2018-2021 WireGuard LLC. All Rights Reserved.
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*/
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static const DEVPROPKEY DEVPKEY_Wintun_OwningProcess = {
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{ 0x3361c968, 0x2f2e, 0x4660, { 0xb4, 0x7e, 0x69, 0x9c, 0xdc, 0x4c, 0x32, 0xb9 } },
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DEVPROPID_FIRST_USABLE + 3
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};
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typedef struct _OWNING_PROCESS
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{
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DWORD ProcessId;
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FILETIME CreationTime;
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} OWNING_PROCESS;
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_Must_inspect_result_
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static _Return_type_success_(return != FALSE)
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BOOL
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WaitForInterfaceWin7(_In_ HDEVINFO DevInfo, _In_ SP_DEVINFO_DATA *DevInfoData, _In_ LPCWSTR DevInstanceId)
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{
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ULONG Status, Number;
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DWORD ValType, Zero;
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WCHAR *FileName = NULL;
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HKEY Key = INVALID_HANDLE_VALUE;
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HANDLE FileHandle = INVALID_HANDLE_VALUE;
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BOOLEAN Ret = FALSE;
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for (DWORD Tries = 0; Tries < 1500; ++Tries)
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{
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if (Tries)
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Sleep(10);
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if (Key == INVALID_HANDLE_VALUE)
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Key = SetupDiOpenDevRegKey(DevInfo, DevInfoData, DICS_FLAG_GLOBAL, 0, DIREG_DRV, KEY_QUERY_VALUE);
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if (!FileName)
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FileName = AdapterGetDeviceObjectFileName(DevInstanceId);
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if (FileName && FileHandle == INVALID_HANDLE_VALUE)
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FileHandle = CreateFileW(
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FileName,
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
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NULL,
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OPEN_EXISTING,
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0,
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NULL);
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Zero = 0;
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if (FileName && FileHandle != INVALID_HANDLE_VALUE && Key != INVALID_HANDLE_VALUE && Key &&
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RegQueryValueExW(Key, L"NetCfgInstanceId", NULL, &ValType, NULL, &Zero) != ERROR_MORE_DATA &&
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CM_Get_DevNode_Status(&Status, &Number, DevInfoData->DevInst, 0) == CR_SUCCESS &&
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!(Status & DN_HAS_PROBLEM) && !Number)
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{
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Ret = TRUE;
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break;
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}
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}
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if (Key != INVALID_HANDLE_VALUE && Key)
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RegCloseKey(Key);
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if (FileHandle != INVALID_HANDLE_VALUE)
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CloseHandle(FileHandle);
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Free(FileName);
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return Ret;
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}
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_Must_inspect_result_
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static _Return_type_success_(return != FALSE)
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BOOL
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CreateAdapterWin7(_Inout_ WINTUN_ADAPTER *Adapter, _In_z_ LPCWSTR Name, _In_z_ LPCWSTR TunnelTypeName)
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{
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DWORD LastError = ERROR_SUCCESS;
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HDEVINFO DevInfo = SetupDiCreateDeviceInfoListExW(&GUID_DEVCLASS_NET, NULL, NULL, NULL);
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if (DevInfo == INVALID_HANDLE_VALUE)
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{
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LastError = LOG_LAST_ERROR(L"Failed to create empty device information set");
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goto cleanup;
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}
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SP_DEVINFO_DATA DevInfoData = { .cbSize = sizeof(DevInfoData) };
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#ifdef MAYBE_WOW64
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if (NativeMachine != IMAGE_FILE_PROCESS)
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{
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if (!CreateInstanceWin7ViaRundll32(Adapter->DevInstanceID))
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{
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LastError = LOG_LAST_ERROR(L"Failed to create device instance");
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goto cleanup;
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}
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if (!SetupDiOpenDeviceInfoW(DevInfo, Adapter->DevInstanceID, NULL, DIOD_INHERIT_CLASSDRVS, &DevInfoData))
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{
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LastError = GetLastError();
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goto cleanupDevInfo;
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}
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goto resumeAfterInstance;
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}
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#endif
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if (!SetupDiCreateDeviceInfoW(
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DevInfo, WINTUN_HWID, &GUID_DEVCLASS_NET, TunnelTypeName, NULL, DICD_GENERATE_ID, &DevInfoData))
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{
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LastError = LOG_LAST_ERROR(L"Failed to create new device information element");
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goto cleanupDevInfo;
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}
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SP_DEVINSTALL_PARAMS_W DevInstallParams = { .cbSize = sizeof(DevInstallParams) };
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if (!SetupDiGetDeviceInstallParamsW(DevInfo, &DevInfoData, &DevInstallParams))
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{
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LastError = LOG_LAST_ERROR(L"Failed to retrieve adapter device installation parameters");
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goto cleanupDevInfo;
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}
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DevInstallParams.Flags |= DI_QUIETINSTALL;
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if (!SetupDiSetDeviceInstallParamsW(DevInfo, &DevInfoData, &DevInstallParams))
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{
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LastError = LOG_LAST_ERROR(L"Failed to set adapter device installation parameters");
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goto cleanupDevInfo;
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}
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if (!SetupDiSetSelectedDevice(DevInfo, &DevInfoData))
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{
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LastError = LOG_LAST_ERROR(L"Failed to select adapter device");
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goto cleanupDevInfo;
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}
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static const WCHAR Hwids[_countof(WINTUN_HWID) + 1 /*Multi-string terminator*/] = WINTUN_HWID;
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if (!SetupDiSetDeviceRegistryPropertyW(DevInfo, &DevInfoData, SPDRP_HARDWAREID, (const BYTE *)Hwids, sizeof(Hwids)))
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{
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LastError = LOG_LAST_ERROR(L"Failed to set adapter hardware ID");
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goto cleanupDevInfo;
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}
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if (!SetupDiBuildDriverInfoList(DevInfo, &DevInfoData, SPDIT_COMPATDRIVER))
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{
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LastError = LOG_LAST_ERROR(L"Failed building adapter driver info list");
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goto cleanupDevInfo;
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}
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SP_DRVINFO_DATA_W DrvInfoData = { .cbSize = sizeof(SP_DRVINFO_DATA_W) };
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if (!SetupDiEnumDriverInfoW(DevInfo, &DevInfoData, SPDIT_COMPATDRIVER, 0, &DrvInfoData) ||
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!SetupDiSetSelectedDriverW(DevInfo, &DevInfoData, &DrvInfoData))
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{
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LastError = LOG_ERROR(ERROR_DRIVER_INSTALL_BLOCKED, L"Failed to select a driver");
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goto cleanupDriverInfo;
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}
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if (!SetupDiCallClassInstaller(DIF_REGISTERDEVICE, DevInfo, &DevInfoData))
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{
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LastError = LOG_LAST_ERROR(L"Failed to register adapter device");
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goto cleanupDevInfo;
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}
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if (!SetupDiCallClassInstaller(DIF_REGISTER_COINSTALLERS, DevInfo, &DevInfoData))
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LOG_LAST_ERROR(L"Failed to register adapter coinstallers");
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if (!SetupDiCallClassInstaller(DIF_INSTALLINTERFACES, DevInfo, &DevInfoData))
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LOG_LAST_ERROR(L"Failed to install adapter interfaces");
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if (!SetupDiCallClassInstaller(DIF_INSTALLDEVICE, DevInfo, &DevInfoData))
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{
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LastError = LOG_LAST_ERROR(L"Failed to install adapter device");
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goto cleanupDevice;
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}
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#ifdef MAYBE_WOW64
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resumeAfterInstance:;
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#endif
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OWNING_PROCESS OwningProcess = { .ProcessId = GetCurrentProcessId() };
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FILETIME Unused;
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if (!GetProcessTimes(GetCurrentProcess(), &OwningProcess.CreationTime, &Unused, &Unused, &Unused))
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{
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LastError = LOG_LAST_ERROR(L"Failed to get process creation time");
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goto cleanupDevice;
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}
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if (!SetupDiSetDeviceRegistryPropertyW(
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DevInfo,
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&DevInfoData,
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SPDRP_FRIENDLYNAME,
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(PBYTE)TunnelTypeName,
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(DWORD)((wcslen(TunnelTypeName) + 1) * sizeof(TunnelTypeName[0]))) ||
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!SetupDiSetDeviceRegistryPropertyW(
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DevInfo,
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&DevInfoData,
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SPDRP_DEVICEDESC,
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(PBYTE)TunnelTypeName,
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(DWORD)((wcslen(TunnelTypeName) + 1) * sizeof(TunnelTypeName[0]))) ||
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!SetupDiSetDevicePropertyW(
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DevInfo,
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&DevInfoData,
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&DEVPKEY_Wintun_Name,
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DEVPROP_TYPE_STRING,
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(PBYTE)Name,
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(DWORD)((wcslen(Name) + 1) * sizeof(Name[0])),
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0) ||
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!SetupDiSetDevicePropertyW(
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DevInfo,
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&DevInfoData,
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&DEVPKEY_Wintun_OwningProcess,
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DEVPROP_TYPE_BINARY,
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(PBYTE)&OwningProcess,
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sizeof(OwningProcess),
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0))
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{
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LastError = LOG_LAST_ERROR(L"Failed to set device properties");
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goto cleanupDevice;
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}
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DWORD RequiredChars = _countof(Adapter->DevInstanceID);
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if (!SetupDiGetDeviceInstanceIdW(DevInfo, &DevInfoData, Adapter->DevInstanceID, RequiredChars, &RequiredChars))
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{
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LastError = LOG_LAST_ERROR(L"Failed to get adapter instance ID");
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goto cleanupDevice;
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}
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if (!WaitForInterfaceWin7(DevInfo, &DevInfoData, Adapter->DevInstanceID))
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{
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DEVPROPTYPE PropertyType = 0;
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INT32 ProblemCode = 0;
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if (!SetupDiGetDevicePropertyW(
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DevInfo,
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&DevInfoData,
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&DEVPKEY_Device_ProblemCode,
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&PropertyType,
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(PBYTE)&ProblemCode,
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sizeof(ProblemCode),
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NULL,
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0) ||
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(PropertyType != DEVPROP_TYPE_INT32 && PropertyType != DEVPROP_TYPE_UINT32))
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ProblemCode = 0;
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LastError = LOG_ERROR(
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ERROR_DEVICE_REINITIALIZATION_NEEDED, L"Failed to setup adapter (problem code: 0x%x)", ProblemCode);
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goto cleanupDevice;
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}
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cleanupDevice:
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if (LastError != ERROR_SUCCESS)
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AdapterRemoveInstance(DevInfo, &DevInfoData);
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cleanupDriverInfo:
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SetupDiDestroyDriverInfoList(DevInfo, &DevInfoData, SPDIT_COMPATDRIVER);
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cleanupDevInfo:
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SetupDiDestroyDeviceInfoList(DevInfo);
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cleanup:
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return RET_ERROR(TRUE, LastError);
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}
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static VOID
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CreateAdapterPostWin7(_Inout_ WINTUN_ADAPTER *Adapter, _In_z_ LPCWSTR TunnelTypeName)
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{
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SetupDiSetDeviceRegistryPropertyW(
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Adapter->DevInfo,
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&Adapter->DevInfoData,
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SPDRP_FRIENDLYNAME,
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(PBYTE)TunnelTypeName,
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(DWORD)((wcslen(TunnelTypeName) + 1) * sizeof(TunnelTypeName[0])));
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SetupDiSetDeviceRegistryPropertyW(
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Adapter->DevInfo,
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&Adapter->DevInfoData,
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SPDRP_DEVICEDESC,
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(PBYTE)TunnelTypeName,
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(DWORD)((wcslen(TunnelTypeName) + 1) * sizeof(TunnelTypeName[0])));
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}
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static BOOL
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ProcessIsStale(_In_ OWNING_PROCESS *OwningProcess)
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{
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HANDLE Process = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, OwningProcess->ProcessId);
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if (!Process)
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return TRUE;
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FILETIME CreationTime, Unused;
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BOOL Ret = GetProcessTimes(Process, &CreationTime, &Unused, &Unused, &Unused);
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CloseHandle(Process);
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if (!Ret)
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return FALSE;
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return !!memcmp(&CreationTime, &OwningProcess->CreationTime, sizeof(CreationTime));
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}
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VOID AdapterCleanupOrphanedDevicesWin7(VOID)
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{
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HDEVINFO DevInfo = SetupDiGetClassDevsExW(&GUID_DEVCLASS_NET, WINTUN_ENUMERATOR, NULL, 0, NULL, NULL, NULL);
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if (DevInfo == INVALID_HANDLE_VALUE)
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{
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if (GetLastError() != ERROR_INVALID_DATA)
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LOG_LAST_ERROR(L"Failed to get adapters");
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return;
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}
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SP_DEVINFO_DATA DevInfoData = { .cbSize = sizeof(DevInfoData) };
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for (DWORD EnumIndex = 0;; ++EnumIndex)
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{
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if (!SetupDiEnumDeviceInfo(DevInfo, EnumIndex, &DevInfoData))
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{
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if (GetLastError() == ERROR_NO_MORE_ITEMS)
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break;
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continue;
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}
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OWNING_PROCESS OwningProcess;
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DEVPROPTYPE PropType;
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if (SetupDiGetDevicePropertyW(
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DevInfo,
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&DevInfoData,
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&DEVPKEY_Wintun_OwningProcess,
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&PropType,
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(PBYTE)&OwningProcess,
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sizeof(OwningProcess),
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NULL,
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0) &&
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PropType == DEVPROP_TYPE_BINARY && !ProcessIsStale(&OwningProcess))
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continue;
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WCHAR Name[MAX_ADAPTER_NAME] = L"<unknown>";
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SetupDiGetDevicePropertyW(
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DevInfo,
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&DevInfoData,
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&DEVPKEY_Wintun_Name,
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&PropType,
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(PBYTE)Name,
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MAX_ADAPTER_NAME * sizeof(Name[0]),
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NULL,
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0);
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if (!AdapterRemoveInstance(DevInfo, &DevInfoData))
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{
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LOG_LAST_ERROR(L"Failed to remove orphaned adapter \"%s\"", Name);
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continue;
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}
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LOG(WINTUN_LOG_INFO, L"Removed orphaned adapter \"%s\"", Name);
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}
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SetupDiDestroyDeviceInfoList(DevInfo);
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}
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VOID AdapterCleanupLegacyDevices(VOID)
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{
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HDEVINFO DevInfo = SetupDiGetClassDevsExW(&GUID_DEVCLASS_NET, L"ROOT\\NET", NULL, 0, NULL, NULL, NULL);
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if (DevInfo == INVALID_HANDLE_VALUE)
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return;
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SP_DEVINFO_DATA DevInfoData = { .cbSize = sizeof(DevInfoData) };
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for (DWORD EnumIndex = 0;; ++EnumIndex)
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{
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if (!SetupDiEnumDeviceInfo(DevInfo, EnumIndex, &DevInfoData))
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{
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if (GetLastError() == ERROR_NO_MORE_ITEMS)
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break;
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continue;
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}
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WCHAR HardwareIDs[0x400] = { 0 };
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DWORD ValueType, Size = sizeof(HardwareIDs) - sizeof(HardwareIDs[0]);
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if (!SetupDiGetDeviceRegistryPropertyW(
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DevInfo, &DevInfoData, SPDRP_HARDWAREID, &ValueType, (PBYTE)HardwareIDs, Size, &Size) ||
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Size > sizeof(HardwareIDs) - sizeof(HardwareIDs[0]))
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continue;
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Size /= sizeof(HardwareIDs[0]);
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for (WCHAR *P = HardwareIDs; P < HardwareIDs + Size; P += wcslen(P) + 1)
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{
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if (!_wcsicmp(P, WINTUN_HWID))
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{
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AdapterRemoveInstance(DevInfo, &DevInfoData);
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break;
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}
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}
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}
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SetupDiDestroyDeviceInfoList(DevInfo);
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}
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