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/**********************************************************************
*
* Project: CPL - Common Portability Library
* Purpose: Fetch Windows UUID using WMI COM interface.
* Author: rprinceley@esri.com
*
**********************************************************************
* Copyright (c) 2020, Robin Princeley <rprinceley@esri.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "cpl_port.h"
#if defined(HAVE_ATLBASE_H)
#define _WIN32_DCOM
#include <iostream>
#include <mutex>
#include <comdef.h>
#include <Wbemidl.h>
#include <windows.h>
#include <comutil.h>
#include <atlbase.h>
#include "cpl_string.h"
#include "cpl_multiproc.h"
static CPLString osWindowsProductUUID;
static void FetchUUIDFunc(void *)
{
HRESULT hResult = CoInitializeEx(0, COINIT_MULTITHREADED);
if (FAILED(hResult))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed to initialize COM library, HRESULT = %d", hResult);
return;
}
else
{
CComPtr<IWbemLocator> poLocator;
hResult = poLocator.CoCreateInstance(CLSID_WbemLocator, NULL,
CLSCTX_INPROC_SERVER);
if (FAILED(hResult))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed to create instance of IWbemLocator, HRESULT = %d",
hResult);
goto com_cleanup;
}
CComPtr<IWbemServices> pSvc;
hResult = poLocator->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL,
0, NULL, 0, 0, &pSvc);
if (FAILED(hResult))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed to create connect to WMI server, HRESULT = %d",
hResult);
goto com_cleanup;
}
CPLDebug("CPLFetchWindowsProductUUID",
"Connected to ROOT\\CIMV2 WMI namespace");
hResult =
CoSetProxyBlanket(pSvc, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE, NULL,
RPC_C_AUTHN_LEVEL_CALL,
RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE);
if (FAILED(hResult))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Failed to set proxy blanket, HRESULT = %d", hResult);
goto com_cleanup;
}
CComPtr<IEnumWbemClassObject> pEnumerator;
hResult = pSvc->ExecQuery(
bstr_t("WQL"),
bstr_t("SELECT UUID FROM Win32_ComputerSystemProduct"),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL,
&pEnumerator);
if (FAILED(hResult))
{
CPLError(CE_Failure, CPLE_AppDefined,
"Query for UUID in Win32_ComputerSystemProduct failed, "
"HRESULT = %d",
hResult);
goto com_cleanup;
}
if (pEnumerator)
{
CComPtr<IWbemClassObject> poClassObject;
ULONG uReturn = 0;
hResult =
pEnumerator->Next(WBEM_INFINITE, 1, &poClassObject, &uReturn);
if (SUCCEEDED(hResult) && uReturn)
{
CComVariant poVariant;
hResult = poClassObject->Get(L"UUID", 0, &poVariant, 0, 0);
if (SUCCEEDED(hResult))
{
bstr_t bString(poVariant.bstrVal);
if (bString.length())
osWindowsProductUUID =
static_cast<const char *>(bString);
}
}
}
}
if (!osWindowsProductUUID.empty())
CPLDebug("CPLFetchWindowsProductUUID",
"Succeeded in querying UUID from WMI.");
com_cleanup:
CoUninitialize();
}
bool CPLFetchWindowsProductUUID(CPLString &osStr);
bool CPLFetchWindowsProductUUID(CPLString &osStr)
{
static std::mutex gMutex;
std::lock_guard<std::mutex> oGuard(gMutex);
static bool bAttemptedGUID = false;
if (!bAttemptedGUID)
{
// All COM work is in a different thread to avoid potential problems:
// the calling thread may or may not have already initialized COM,
// and the threading model may differ.
auto pThread = CPLCreateJoinableThread(FetchUUIDFunc, nullptr);
CPLJoinThread(pThread);
bAttemptedGUID = true;
}
osStr = osWindowsProductUUID;
return !osWindowsProductUUID.empty();
}
#endif /* defined(HAVE_ATLBASE_H) */
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