SAFEARRAY - pobieranie adresu ip karty sieciowej

0

Witam,

Mam problem z pobraniem adresów ip z bazy "wmi". Z tego co wyczytałem z dokumentacji w MSDN należy do pobraniu użyć SAFEARRAY, tylko że w internecie nie ma przykładów jak użyć tej funkcji. Typ danych zwracanych z bazy to VT_BSTR + VT_ARRAY.

Kod pobierający adresy ip z bazy powinien być w tym miejscu :

if ((vtProp.vt & VT_ARRAY))
                        wcout << "IPAddress : " << "Array types not supported (yet)" << endl;

Kawałek kodu :

...

if (!localconn)
    {

        hres = CoSetProxyBlanket(
            pEnumerator,                    // Indicates the proxy to set
            RPC_C_AUTHN_DEFAULT,            // RPC_C_AUTHN_xxx
            RPC_C_AUTHZ_DEFAULT,            // RPC_C_AUTHZ_xxx
            COLE_DEFAULT_PRINCIPAL,         // Server principal name
            RPC_C_AUTHN_LEVEL_PKT_PRIVACY,  // RPC_C_AUTHN_LEVEL_xxx
            RPC_C_IMP_LEVEL_IMPERSONATE,    // RPC_C_IMP_LEVEL_xxx
            userAcct,                       // client identity
            EOAC_NONE                       // proxy capabilities
            );

        if (FAILED(hres))
        {
            cout << "Could not set proxy blanket on enumerator. Error code = 0x" << hex << hres << endl;
            cout << _com_error(hres).ErrorMessage() << endl;
            pEnumerator->Release();
            pSvc->Release();
            pLoc->Release();
            CoUninitialize();
            cout << "press enter to exit" << endl;
            cin.get();
            return 1;               // Program has failed.
        }
    }

    // Get the data from the WQL sentence
    IWbemClassObject *pclsObj = NULL;
    ULONG uReturn = 0;

    while (pEnumerator)
    {
        HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj, &uReturn);

        if(0 == uReturn || FAILED(hr))
          break;


        VARIANT vtProp;

                hr = pclsObj->Get(L"IPAddress", 0, &vtProp, 0, 0);// String
                if (!FAILED(hr))
                {
                  if ((vtProp.vt==VT_NULL) || (vtProp.vt==VT_EMPTY))
                    wcout << "IPAddress : " << ((vtProp.vt==VT_NULL) ? "NULL" : "EMPTY") << endl;
                  else{
                    if ((vtProp.vt & VT_ARRAY))
                        wcout << "IPAddress : " << "Array types not supported (yet)" << endl;
                    else
                        wcout << "IPAddress : " << vtProp.bstrVal << endl;
                  }
                }
                VariantClear(&vtProp);


        pclsObj->Release();
        pclsObj=NULL;
    }


    // Cleanup

    pSvc->Release();
    pLoc->Release();
    pEnumerator->Release();
    if (pclsObj!=NULL)
     pclsObj->Release();

    CoUninitialize();
    return 0;   // Program successfully completed.

...
0

czym jest pEnumerator? daj taki kod, który da się skompilować i testować...

0

@Azarien łap cały kod

//-----------------------------------------------------------------------------------------------------
//     This code was generated by the Wmi Delphi Code Creator (WDCC) Version 1.8.5.0
//     http://code.google.com/p/wmi-delphi-code-creator/
//     Blog http://theroadtodelphi.wordpress.com/wmi-delphi-code-creator/
//     Author Rodrigo Ruz V. (RRUZ) Copyright (C) 2011-2014
//-----------------------------------------------------------------------------------------------------
//
//     LIABILITY DISCLAIMER
//     THIS GENERATED CODE IS DISTRIBUTED "AS IS". NO WARRANTY OF ANY KIND IS EXPRESSED OR IMPLIED.
//     YOU USE IT AT YOUR OWN RISK. THE AUTHOR NOT WILL BE LIABLE FOR DATA LOSS,
//     DAMAGES AND LOSS OF PROFITS OR ANY OTHER KIND OF LOSS WHILE USING OR MISUSING THIS CODE.
//
//----------------------------------------------------------------------------------------------------

#define _WIN32_DCOM
#include <iostream>
using namespace std;
#include <comdef.h>
#include <Wbemidl.h>
# pragma comment(lib, "wbemuuid.lib")

//CREDENTIAL structure
//http://msdn.microsoft.com/en-us/library/windows/desktop/aa374788%28v=vs.85%29.aspx
#define CRED_MAX_USERNAME_LENGTH            513
#define CRED_MAX_CREDENTIAL_BLOB_SIZE       512
#define CREDUI_MAX_USERNAME_LENGTH CRED_MAX_USERNAME_LENGTH
#define CREDUI_MAX_PASSWORD_LENGTH (CRED_MAX_CREDENTIAL_BLOB_SIZE / 2)

// The Win32_NetworkAdapterConfiguration class represents the attributes and
// behaviors of a network adapter. This class has been extended to include extra
// properties and methods that support the management of the TCP/IPprotocols (and
// are independent of the network adapter).

#pragma argsused
int main(int argc, char* argv[])
{
    wchar_t pszName[CREDUI_MAX_USERNAME_LENGTH+1] = L"user";
    wchar_t pszPwd[CREDUI_MAX_PASSWORD_LENGTH+1]  = L"password";
    BSTR strNetworkResource;
    //To use a WMI remote connection set localconn to false and configure the values of the pszName, pszPwd and the name of the remote machine in strNetworkResource
    bool localconn = true;
    strNetworkResource = localconn ?  L"\\\\.\\root\\CIMV2" : L"\\\\remote--machine\\root\\CIMV2";

    COAUTHIDENTITY *userAcct =  NULL ;
    COAUTHIDENTITY authIdent;

    // Initialize COM. ------------------------------------------

    HRESULT hres;
    hres =  CoInitializeEx(0, COINIT_MULTITHREADED);
    if (FAILED(hres))
    {
        cout << "Failed to initialize COM library. Error code = 0x"	<< hex << hres << endl;
        cout << _com_error(hres).ErrorMessage() << endl;
        cout << "press enter to exit" << endl;
        cin.get();
        return 1;                  // Program has failed.
    }

    // Set general COM security levels --------------------------

    if (localconn)
        hres =  CoInitializeSecurity(
            NULL,
            -1,                          // COM authentication
            NULL,                        // Authentication services
            NULL,                        // Reserved
            RPC_C_AUTHN_LEVEL_DEFAULT,   // Default authentication
            RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation
            NULL,                        // Authentication info
            EOAC_NONE,                   // Additional capabilities
            NULL                         // Reserved
            );
    else
        hres =  CoInitializeSecurity(
            NULL,
            -1,                          // COM authentication
            NULL,                        // Authentication services
            NULL,                        // Reserved
            RPC_C_AUTHN_LEVEL_DEFAULT,   // Default authentication
            RPC_C_IMP_LEVEL_IDENTIFY,    // Default Impersonation
            NULL,                        // Authentication info
            EOAC_NONE,                   // Additional capabilities
            NULL                         // Reserved
            );

    if (FAILED(hres))
    {
        cout << "Failed to initialize security. Error code = 0x" << hex << hres << endl;
        cout << _com_error(hres).ErrorMessage() << endl;
        CoUninitialize();
        cout << "press enter to exit" << endl;
        cin.get();
        return 1;                    // Program has failed.
    }

    // Obtain the initial locator to WMI -------------------------

    IWbemLocator *pLoc = NULL;
    hres = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *) &pLoc);

    if (FAILED(hres))
    {
        cout << "Failed to create IWbemLocator object."	<< " Err code = 0x" << hex << hres << endl;
        cout << _com_error(hres).ErrorMessage() << endl;
        CoUninitialize();
        cout << "press enter to exit" << endl;
        cin.get();
        return 1;                 // Program has failed.
    }

    // Connect to WMI through the IWbemLocator::ConnectServer method

    IWbemServices *pSvc = NULL;

    if (localconn)
        hres = pLoc->ConnectServer(
             _bstr_t(strNetworkResource),      // Object path of WMI namespace
             NULL,                    // User name. NULL = current user
             NULL,                    // User password. NULL = current
             0,                       // Locale. NULL indicates current
             NULL,                    // Security flags.
             0,                       // Authority (e.g. Kerberos)
             0,                       // Context object
             &pSvc                    // pointer to IWbemServices proxy
             );
    else
        hres = pLoc->ConnectServer(
            _bstr_t(strNetworkResource),  // Object path of WMI namespace
            _bstr_t(pszName),             // User name
            _bstr_t(pszPwd),              // User password
            NULL,                // Locale
            NULL,                // Security flags
            NULL,				 // Authority
            NULL,                // Context object
            &pSvc                // IWbemServices proxy
            );

    if (FAILED(hres))
    {
        cout << "Could not connect. Error code = 0x" << hex << hres << endl;
        cout << _com_error(hres).ErrorMessage() << endl;
        pLoc->Release();
        CoUninitialize();
        cout << "press enter to exit" << endl;
        cin.get();
        return 1;                // Program has failed.
    }

    cout << "Connected to root\\CIMV2 WMI namespace" << endl;

    // Set security levels on the proxy -------------------------
    if (localconn)
        hres = CoSetProxyBlanket(
           pSvc,                        // Indicates the proxy to set
           RPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxx
           RPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxx
           NULL,                        // Server principal name
           RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx
           RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
           NULL,                        // client identity
           EOAC_NONE                    // proxy capabilities
        );
    else
    {
        // Create COAUTHIDENTITY that can be used for setting security on proxy
        memset(&authIdent, 0, sizeof(COAUTHIDENTITY));
        authIdent.PasswordLength = wcslen (pszPwd);
        authIdent.Password = (USHORT*)pszPwd;
        authIdent.User = (USHORT*)pszName;
        authIdent.UserLength = wcslen(pszName);
        authIdent.Domain = 0;
        authIdent.DomainLength = 0;
        authIdent.Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
        userAcct = &authIdent;

        hres = CoSetProxyBlanket(
           pSvc,                           // Indicates the proxy to set
           RPC_C_AUTHN_DEFAULT,            // RPC_C_AUTHN_xxx
           RPC_C_AUTHZ_DEFAULT,            // RPC_C_AUTHZ_xxx
           COLE_DEFAULT_PRINCIPAL,         // Server principal name
           RPC_C_AUTHN_LEVEL_PKT_PRIVACY,  // RPC_C_AUTHN_LEVEL_xxx
           RPC_C_IMP_LEVEL_IMPERSONATE,    // RPC_C_IMP_LEVEL_xxx
           userAcct,                       // client identity
           EOAC_NONE                       // proxy capabilities
        );
    }

    if (FAILED(hres))
    {
        cout << "Could not set proxy blanket. Error code = 0x" << hex << hres << endl;
        cout << _com_error(hres).ErrorMessage() << endl;
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        cout << "press enter to exit" << endl;
        cin.get();
        return 1;               // Program has failed.
    }

    // Use the IWbemServices pointer to make requests of WMI ----

    IEnumWbemClassObject* pEnumerator = NULL;
    hres = pSvc->ExecQuery(	L"WQL",	L"SELECT * FROM Win32_NetworkAdapterConfiguration",
    WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumerator);

    if (FAILED(hres))
    {
        cout << "ExecQuery failed" << " Error code = 0x"	<< hex << hres << endl;
        cout << _com_error(hres).ErrorMessage() << endl;
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        cout << "press enter to exit" << endl;
        cin.get();
        return 1;               // Program has failed.
    }

    // Secure the enumerator proxy
    if (!localconn)
    {

        hres = CoSetProxyBlanket(
            pEnumerator,                    // Indicates the proxy to set
            RPC_C_AUTHN_DEFAULT,            // RPC_C_AUTHN_xxx
            RPC_C_AUTHZ_DEFAULT,            // RPC_C_AUTHZ_xxx
            COLE_DEFAULT_PRINCIPAL,         // Server principal name
            RPC_C_AUTHN_LEVEL_PKT_PRIVACY,  // RPC_C_AUTHN_LEVEL_xxx
            RPC_C_IMP_LEVEL_IMPERSONATE,    // RPC_C_IMP_LEVEL_xxx
            userAcct,                       // client identity
            EOAC_NONE                       // proxy capabilities
            );

        if (FAILED(hres))
        {
            cout << "Could not set proxy blanket on enumerator. Error code = 0x" << hex << hres << endl;
            cout << _com_error(hres).ErrorMessage() << endl;
            pEnumerator->Release();
            pSvc->Release();
            pLoc->Release();
            CoUninitialize();
            cout << "press enter to exit" << endl;
            cin.get();
            return 1;               // Program has failed.
        }
    }

    // Get the data from the WQL sentence
    IWbemClassObject *pclsObj = NULL;
    ULONG uReturn = 0;

    while (pEnumerator)
    {
        HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj, &uReturn);

        if(0 == uReturn || FAILED(hr))
          break;


        VARIANT vtProp;

                hr = pclsObj->Get(L"IPAddress", 0, &vtProp, 0, 0);// String
                if (!FAILED(hr))
                {
                  if ((vtProp.vt==VT_NULL) || (vtProp.vt==VT_EMPTY))
                    wcout << "IPAddress : " << ((vtProp.vt==VT_NULL) ? "NULL" : "EMPTY") << endl;
                  else{
                    if ((vtProp.vt & VT_ARRAY))
                        wcout << "IPAddress : " << "Array types not supported (yet)" << endl;
                    else
                        wcout << "IPAddress : " << vtProp.bstrVal << endl;
                  }
                }
                VariantClear(&vtProp);


        pclsObj->Release();
        pclsObj=NULL;
    }


    // Cleanup

    pSvc->Release();
    pLoc->Release();
    pEnumerator->Release();
    if (pclsObj!=NULL)
     pclsObj->Release();

    CoUninitialize();
    return 0;   // Program successfully completed.
}
 

PS. Wygenerowane za pomocą programu, tylko dlatego że szukałem przyczyny dlaczego to nie działa. Mam swój kod napisany też.

1

Problem rozwiązany :)

Żeby nie było, że nie chcę pomagać innym to wrzucam jak udało mi się to zrobić.

SAFEARRAY *psa = vtProp.parray;

if(psa)
{
    void **p = (void **)psa->pvData;
    wchar_t *wstr = (wchar_t *)*p;
    wcout << wstr << endl;
}
0

Powyższy kod działa, ale jest kolejny problem :) A mianowicie zamiast pobrania "[8.8.8.8|194.204.152.34]" pobiera tylko "8.8.8.8"

Ps. Już działa. Ostateczny kod wygląda tak :

SAFEARRAY *psa = vtProp.parray;

                            if(psa)
                            {
                                LONG uBound = -1, lBound = 0;
                                SafeArrayGetUBound(psa,1,&uBound);
                                SafeArrayGetLBound(psa,1,&lBound);
                                int nCount = uBound - lBound +1;
                                for(int i = 0; i < nCount; ++i)
                                {
                                    wcout << ((BSTR*)(psa->pvData))[i] << endl;
                                }
                            }
0
#define _WIN32_DCOM
#include <iostream>
#include <clocale>
using namespace std;

#define _WIN32_WINNT 0x600
#include <comdef.h>
#include <Wbemidl.h>

# pragma comment(lib, "wbemuuid.lib")

#ifdef NDEBUG
#  pragma comment(lib,"comsuppw.lib")
#else
#  pragma comment(lib,"comsuppwd.lib")
#endif

//CREDENTIAL structure
//http://msdn.microsoft.com/en-us/library/windows/desktop/aa374788%28v=vs.85%29.aspx
#define CRED_MAX_USERNAME_LENGTH            513
#define CRED_MAX_CREDENTIAL_BLOB_SIZE       512
#define CREDUI_MAX_USERNAME_LENGTH CRED_MAX_USERNAME_LENGTH
#define CREDUI_MAX_PASSWORD_LENGTH (CRED_MAX_CREDENTIAL_BLOB_SIZE / 2)

_COM_SMARTPTR_TYPEDEF(IWbemLocator, __uuidof(IWbemLocator));
_COM_SMARTPTR_TYPEDEF(IWbemServices, __uuidof(IWbemServices));
_COM_SMARTPTR_TYPEDEF(IEnumWbemClassObject, __uuidof(IEnumWbemClassObject));
_COM_SMARTPTR_TYPEDEF(IWbemClassObject, __uuidof(IWbemClassObject));

struct CComError
{
	HRESULT hr;
	const char *msg;
};

struct CCoInitializeEx
{
	HRESULT hr;
	CCoInitializeEx(DWORD dwCoInit)
	{
		hr = CoInitializeEx(nullptr, dwCoInit);
	}
	~CCoInitializeEx()
	{
		if (SUCCEEDED(hr))
			CoUninitialize();
	}
};

#define HRCHECK(what, msg) { HRESULT hr = what; if FAILED(hr) throw CComError { hr, msg }; }

int main(int argc, char* argv[])
{
	setlocale(LC_CTYPE, ".ACP");

	wchar_t pszName[CREDUI_MAX_USERNAME_LENGTH + 1] = L"user";
	wchar_t pszPwd[CREDUI_MAX_PASSWORD_LENGTH + 1] = L"password";
	BSTR strNetworkResource;
	//To use a WMI remote connection set localconn to false and configure the values of the pszName, pszPwd and the name of the remote machine in strNetworkResource
	bool localconn = true;
	strNetworkResource = localconn ? L"\\\\.\\root\\CIMV2" : L"\\\\remote--machine\\root\\CIMV2";

	COAUTHIDENTITY *userAcct = NULL;
	COAUTHIDENTITY authIdent;

	HRESULT hres;

	try
	{
		// Initialize COM. ------------------------------------------

		CCoInitializeEx coinit(COINIT_MULTITHREADED);
		HRCHECK(coinit.hr, "Failed to initialize COM library.");

		// Set general COM security levels --------------------------

		DWORD impLevel = localconn ? RPC_C_IMP_LEVEL_IMPERSONATE : RPC_C_IMP_LEVEL_IDENTIFY;

		hres = CoInitializeSecurity(
			NULL,
			-1,                          // COM authentication
			NULL,                        // Authentication services
			NULL,                        // Reserved
			RPC_C_AUTHN_LEVEL_DEFAULT,   // Default authentication
			impLevel,					 // Default Impersonation
			NULL,                        // Authentication info
			EOAC_NONE,                   // Additional capabilities
			NULL                         // Reserved
			);
		HRCHECK(hres, "Failed to initialize security.");

		// Obtain the initial locator to WMI -------------------------

		IWbemLocatorPtr pLoc;
		hres = pLoc.CreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER);
		HRCHECK(hres, "Failed to create IWbemLocator object.");

		// Connect to WMI through the IWbemLocator::ConnectServer method

		IWbemServicesPtr pSvc;

		if (localconn)
			hres = pLoc->ConnectServer(
			_bstr_t(strNetworkResource),      // Object path of WMI namespace
			NULL,                    // User name. NULL = current user
			NULL,                    // User password. NULL = current
			0,                       // Locale. NULL indicates current
			NULL,                    // Security flags.
			0,                       // Authority (e.g. Kerberos)
			0,                       // Context object
			&pSvc                    // pointer to IWbemServices proxy
			);
		else
			hres = pLoc->ConnectServer(
			_bstr_t(strNetworkResource),  // Object path of WMI namespace
			_bstr_t(pszName),             // User name
			_bstr_t(pszPwd),              // User password
			NULL,                // Locale
			NULL,                // Security flags
			NULL,                 // Authority
			NULL,                // Context object
			&pSvc                // IWbemServices proxy
			);
		HRCHECK(hres, "Could not connect.");

		cout << "Connected to root\\CIMV2 WMI namespace" << endl;

		// Set security levels on the proxy -------------------------
		if (localconn)
			hres = CoSetProxyBlanket(
			pSvc,                        // Indicates the proxy to set
			RPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxx
			RPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxx
			NULL,                        // Server principal name
			RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx
			RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
			NULL,                        // client identity
			EOAC_NONE                    // proxy capabilities
			);
		else
		{
			// Create COAUTHIDENTITY that can be used for setting security on proxy
			memset(&authIdent, 0, sizeof(COAUTHIDENTITY));
			authIdent.PasswordLength = wcslen(pszPwd);
			authIdent.Password = (USHORT*)pszPwd;
			authIdent.User = (USHORT*)pszName;
			authIdent.UserLength = wcslen(pszName);
			authIdent.Domain = 0;
			authIdent.DomainLength = 0;
			authIdent.Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
			userAcct = &authIdent;

			hres = CoSetProxyBlanket(
				pSvc,                           // Indicates the proxy to set
				RPC_C_AUTHN_DEFAULT,            // RPC_C_AUTHN_xxx
				RPC_C_AUTHZ_DEFAULT,            // RPC_C_AUTHZ_xxx
				COLE_DEFAULT_PRINCIPAL,         // Server principal name
				RPC_C_AUTHN_LEVEL_PKT_PRIVACY,  // RPC_C_AUTHN_LEVEL_xxx
				RPC_C_IMP_LEVEL_IMPERSONATE,    // RPC_C_IMP_LEVEL_xxx
				userAcct,                       // client identity
				EOAC_NONE                       // proxy capabilities
				);
		}
		HRCHECK(hres, "Could not set proxy blanket.");

		// Use the IWbemServices pointer to make requests of WMI ----

		IEnumWbemClassObjectPtr pEnumerator;
		hres = pSvc->ExecQuery(L"WQL", L"SELECT * FROM Win32_NetworkAdapterConfiguration",
			WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumerator);
		HRCHECK(hres, "ExecQuery failed");

		// Secure the enumerator proxy
		if (!localconn)
		{
			hres = CoSetProxyBlanket(
				pEnumerator,                    // Indicates the proxy to set
				RPC_C_AUTHN_DEFAULT,            // RPC_C_AUTHN_xxx
				RPC_C_AUTHZ_DEFAULT,            // RPC_C_AUTHZ_xxx
				COLE_DEFAULT_PRINCIPAL,         // Server principal name
				RPC_C_AUTHN_LEVEL_PKT_PRIVACY,  // RPC_C_AUTHN_LEVEL_xxx
				RPC_C_IMP_LEVEL_IMPERSONATE,    // RPC_C_IMP_LEVEL_xxx
				userAcct,                       // client identity
				EOAC_NONE                       // proxy capabilities
				);
			HRCHECK(hres, "Could not set proxy blanket on enumerator.");
		}

		while (pEnumerator)
		{
			// Get the data from the WQL sentence
			IWbemClassObjectPtr pclsObj;
			ULONG uReturn = 0;

			HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj, &uReturn);

			if (0 == uReturn || FAILED(hr))
				break;

			_variant_t vtProp;

			hr = pclsObj->Get(L"IPAddress", 0, &vtProp, 0, 0);// String
			if (SUCCEEDED(hr))
			{
				if (vtProp.vt == VT_NULL)
					wcout << "IPAddress : NULL" << endl;
				else if (vtProp.vt == VT_EMPTY)
					wcout << "IPAddress : EMPTY" << endl;
				else if ((vtProp.vt & VT_ARRAY))
				{

					SAFEARRAY *psa = vtProp.parray;
					if (psa)
					{
						LONG uBound = -1, lBound = 0;
						SafeArrayGetUBound(psa, 1, &uBound);
						SafeArrayGetLBound(psa, 1, &lBound);
						int nCount = uBound - lBound + 1;
						for (long i = 0; i < nCount; ++i)
						{
							BSTR element;
							SafeArrayGetElement(psa, &i, &element);
							wcout << element << endl;
						}
					}
				}
				else
					wcout << "IPAddress : " << vtProp.bstrVal << endl;
			}
		}

		// Cleanup
		return 0;   // Program successfully completed.
	}
	catch (CComError err)
	{
		cout << err.msg << " Error code = 0x" << hex << err.hr << endl;
		wcout << _com_error(err.hr).ErrorMessage() << endl;
		cout << "press enter to exit" << endl;
		cin.get();
		return 1;                  // Program has failed.
	}
}

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