#include "stdafx.h"
#define _WIN32_DCOM
#include
using namespace std;
#include
#include
# pragma comment(lib, "wbemuuid.lib")
int main(int argc, char **argv)
{
HRESULT hres;
// Step 1: --------------------------------------------------
// Initialize COM. ------------------------------------------
hres = CoInitializeEx(0, COINIT_MULTITHREADED);
if (FAILED(hres))
{
cout << "Failed to initialize COM library. Error code = 0x"
<< hex << hres << endl;
return 1; // Program has failed.
}
// Step 2: --------------------------------------------------
// Set general COM security levels --------------------------
// Note: If you are using Windows 2000, you need to specify -
// the default authentication credentials for a user by using
// a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----
// parameter of CoInitializeSecurity ------------------------
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
);
if (FAILED(hres))
{
cout << "Failed to initialize security. Error code = 0x"
<< hex << hres << endl;
CoUninitialize();
return 1; // Program has failed.
}
// Step 3: ---------------------------------------------------
// 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;
CoUninitialize();
return 1; // Program has failed.
}
// Step 4: -----------------------------------------------------
// Connect to WMI through the IWbemLocator::ConnectServer method
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"), // 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
);
if (FAILED(hres))
{
cout << "Could not connect. Error code = 0x"
<< hex << hres << endl;
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}
cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;
// Step 5: --------------------------------------------------
// Set security levels on the proxy -------------------------
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
);
if (FAILED(hres))
{
cout << "Could not set proxy blanket. Error code = 0x"
<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}
// Step 6: --------------------------------------------------
// Use the IWbemServices pointer to make requests of WMI ----
// For example, get the name of the operating system
IEnumWbemClassObject* pEnumerator = NULL;
hres = pSvc->ExecQuery(
bstr_t("WQL"),
//bstr_t("SELECT * FROM Win32_SoundDevice"),
bstr_t("SELECT * FROM Win32_SoundDevice"),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator);
if (FAILED(hres))
{
cout << "Query for operating system name failed."
<< " Error code = 0x"
<< hex << hres << endl;
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}
// Step 7: -------------------------------------------------
// Get the data from the query in step 6 -------------------
IWbemClassObject *pclsObj;
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"Caption", 0, &vtProp, 0, 0);
//wcout << " Caption : " << vtProp.bstrVal << endl;
//hr = pclsObj->Get(L"Description", 0, &vtProp, 0, 0);
//wcout << " Description : " << vtProp.bstrVal << endl;
//hr = pclsObj->Get(L" Manufacturer", 0, &vtProp, 0, 0);
//wcout << " Manufacturer : " << vtProp.bstrVal << endl;
//hr = pclsObj->Get(L"SystemName", 0, &vtProp, 0, 0);
//wcout << " SystemName : " << vtProp.bstrVal << endl;
//hr = pclsObj->Get(L"SystemCreationClassName", 0, &vtProp, 0, 0);
//wcout << " SystemCreationClassName : " << vtProp.bstrVal << endl;
//VariantClear(&vtProp);
SAFEARRAY*pvNames=NULL ;
if(pclsObj->GetNames(NULL,WBEM_FLAG_ALWAYS|WBEM_MASK_CONDITION_ORIGIN,NULL,&pvNames)==S_OK)
{
long vbl,vbu ;
SafeArrayGetLBound(pvNames,1,&vbl);
SafeArrayGetUBound(pvNames,1,&vbu);
for(long idx=vbl;idx<=vbu;idx++)
{
long aidx=idx ;
wchar_t *wsName=0 ;
VARIANT vValue ;
VariantInit(&vValue);
SafeArrayGetElement(pvNames,&aidx,&wsName);
BSTR bs=SysAllocString(wsName);
hres=pclsObj->Get(bs,0,&vValue,NULL,0);
SysFreeString(bs);
if(SUCCEEDED(hres))
{
char szANSIString[MAX_PATH];
WideCharToMultiByte(CP_ACP,WC_COMPOSITECHECK,wsName,-1,
szANSIString,sizeof(szANSIString),NULL,NULL);
wcout< //wcout << vValue.bstrVal << endl;
//VariantClear(&vValue);
switch(vValue.vt)
{
case VT_BSTR :
wprintf(L"%s",V_BSTR(&vValue));
break ;
case VT_I2 :
wprintf(L"%d",V_I2(&vValue));
break ;
case VT_I4 :
wprintf(L"%d",V_I4(&vValue));
break ;
case VT_BOOL :
wprintf(L"%s",V_BOOL(&vValue)?L"TRUE":L"FALSE");
break ;
default:
/*WCHAR tmp[100];
wcscpy(tmp, V_BSTR(&vValue));
char tmp1[MAX_PATH];
WideCharToMultiByte(CP_ACP,WC_COMPOSITECHECK,tmp,-1,
tmp1,sizeof(tmp1),NULL,NULL);
cout< break;
}
cout< }
SysFreeString(wsName);
}
}
}
// Cleanup
// ========
pSvc->Release();
pLoc->Release();
pEnumerator->Release();
pclsObj->Release();
CoUninitialize();
return 0; // Program successfully completed.
}
