Need help with my subroutine in C++

Discussion in 'Mixed Languages' started by Jachra, Dec 12, 2018.

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  1. Jachra

    Jachra MDL Member

    Apr 5, 2010
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    Hello

    I tried to convert the following from VBS to C++. I keep getting error "Failed to Initialize COM. Error code = 0x80010106" on my CoInitializeEx(NULL, COINIT_MULTITHREADED) call. What do I do wrong?
    Thanks in advance for any help.

    Code:
    strComputer = "."
    
    Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")
    Set colItems = objWMIService.ExecQuery("Select * from SoftwareLicensingProduct")
    
    For Each objItem in colItems
        If NOT objItem.ProductKeyID = "null" Then
            Wscript.Echo "Extend PID: " & objItem.ProductKeyID
            Wscript.Echo "Windows Family: " & objItem.LicenseFamily
            Wscript.Echo "Windows Type: " & objItem.ProductKeyChannel
            Wscript.Echo "Activation ID: " & objItem.ID
            Exit For
        End If
    Next
    My function in C++:

    Code:
    private: std::string GetActIDFromSystem()
        {
            HRESULT hres;
            hres = CoInitializeEx(NULL, COINIT_MULTITHREADED);
    
            if (FAILED(hres))
            {
                //std::string format_error(unsigned __int32 hres);
                std::stringstream ss;
                ss << "Failed to Initialize COM. Error code = 0x" << std::hex << hres << std::endl;
                return ss.str();
            }
    
            hres = CoInitializeSecurity(NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_DEFAULT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, NULL);
    
            if (FAILED(hres))
            {
                CoUninitialize();
                //std::string format_error(unsigned __int32 hres);
                std::stringstream ss;
                ss << "Failed to initialize security. Error code = 0x" << std::hex << hres << std::endl;
                return ss.str();
            }
    
            IWbemLocator *pLoc = NULL;
            hres = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *)&pLoc);
    
            if (FAILED(hres))
            {
                CoUninitialize();
                //std::string format_error(unsigned __int32 hres);
                std::stringstream ss;
                ss << "Failed to create IWbemLocator object. Error code = 0x" << std::hex << hres << std::endl;
                return ss.str();
            }
    
            IWbemServices *pSvc = NULL;
    
            // Connect to the root\cimv2 namespace with
            // the current user and obtain pointer pSvc
            // to make IWbemServices calls.
            hres = pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, 0, NULL, 0, 0, &pSvc);
    
            if (FAILED(hres))
            {
                pLoc->Release();
                CoUninitialize();
                //std::string format_error(unsigned __int32 hres);
                std::stringstream ss;
                ss << "Could not connect. Error code = 0x" << std::hex << hres << std::endl;
                return ss.str();
            }
    
            //cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;
    
            hres = 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(hres))
            {
                pSvc->Release();
                pLoc->Release();
                CoUninitialize();
                //std::string format_error(unsigned __int32 hres);
                std::stringstream ss;
                ss << "Could not set proxy blanket. Error code = 0x" << std::hex << hres << std::endl;
                return ss.str();
            }
    
            // For example, get the name of the operating system
            IEnumWbemClassObject* pEnumerator = NULL;
            hres = pSvc->ExecQuery(bstr_t("WQL"), bstr_t("SELECT * FROM SoftwareLicensingProduct"),
                WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumerator);
    
            if (FAILED(hres))
            {
                pSvc->Release();
                pLoc->Release();
                CoUninitialize();
                //std::string format_error(unsigned __int32 hres);
                std::stringstream ss;
                ss << "Query for SoftwareLicensingProduct failed. Error code = 0x" << std::hex << hres << std::endl;
                return ss.str();
            }
    
            IWbemClassObject *pclsObj = NULL;
            ULONG uReturn = 0;
    
            while (pEnumerator)
            {
                HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj, &uReturn);
    
                if (0 == uReturn)
                {
                    break;
                }
    
                VARIANT vtProp;
    
                // Get the value of the Name property
                hr = pclsObj->Get(L"ProductKeyID", 0, &vtProp, 0, 0);
                std::stringstream ss;
                ss << vtProp.bstrVal;
                VariantClear(&vtProp);
    
                pclsObj->Release();
            }
    
            // Cleanup
            // ========
            pSvc->Release();
            pLoc->Release();
            pEnumerator->Release();
            CoUninitialize();
            return "0";
        }
     
  2. Michaela Joy

    Michaela Joy MDL Crazy Lady

    Jul 26, 2012
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    #2 Michaela Joy, Dec 12, 2018
    Last edited: Dec 12, 2018
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  3. Jachra

    Jachra MDL Member

    Apr 5, 2010
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    Thank you for your answer. I tried that, but did get an error on CoInitializeSecurity. I disabled that part of code and then it worked.
     
  4. Michaela Joy

    Michaela Joy MDL Crazy Lady

    Jul 26, 2012
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    4,649
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    @Jachra: I'm glad I was able to help. :)

    Please describe the error that you're getting, and We'll try to figure out what's needed to fix it.
     
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  5. Muerto

    Muerto MDL Debugger

    Mar 7, 2012
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    #5 Muerto, Dec 12, 2018
    Last edited: Jan 14, 2021
    ...
     
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