在VC里实现WMI编程取硬件信息

客官°小女子只卖身不卖艺 2022-10-02 13:57 170阅读 0赞

\#include "stdafx.h"  
\#define \_WIN32\_DCOM  
\#include <iostream>  
using namespace std;  
\#include <comdef.h>  
\#include <Wbemidl.h>  
\#include <conio.h>

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

BOOL ManageWMI();  
int \_tmain(int argc, \_TCHAR\* argv\[\])  
\{  
if(!ManageWMI()) printf("%WMI Error!");  
\_getch();  
return 0;  
\}

BOOL ManageWMI()  
\{  
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\_NetworkAdapterConfiguration WHERE IPEnabled = 'TRUE'"),  
WBEM\_FLAG\_FORWARD\_ONLY | WBEM\_FLAG\_RETURN\_IMMEDIATELY,  
NULL,  
&pEnumerator);  
  
if (FAILED(hres))  
\{  
cout << "Query for Network Adapter Configuration 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;  
VariantInit(&vtProp);

//hr = pclsObj->Get(L"IPSubnet", 0, &vtProp, 0, 0);  
// Get the value of the Enable property  
hr = pclsObj->Get(L"IPEnabled", 0, &vtProp, 0, 0);  
// Get the value of the MacAddress property  
if(vtProp.boolVal)  
\{  
hr = pclsObj->Get(L"MacAddress", 0, &vtProp, 0, 0);  
wcout << " MacAddress : " << vtProp.bstrVal << endl;  
\}  
  
hr = pclsObj->Get(L"IPEnabled", 0, &vtProp, 0, 0);  
if(vtProp.boolVal)  
\{  
LONG lstart, lend;  
LONG idx = -1;  
BSTR\* pbstr;  
SAFEARRAY \*sa;  
hr = pclsObj->Get(L"Description", 0, &vtProp, 0, 0);  
if(!FAILED(hr))  
\{  
wcout << "Description: " << vtProp.bstrVal << endl;  
\}  
hr = pclsObj->Get(L"DNSHostName", 0, &vtProp, 0, 0);  
if(!FAILED(hr))  
\{  
cout << "DNS:" << vtProp.bstrVal << endl;  
\}  
hr = pclsObj->Get(L"IPAddress", 0, &vtProp, 0, 0);  
if(!FAILED(hr))  
\{  
SAFEARRAY \*psa = vtProp.parray;  
cout << "IP Address::" << psa << endl;  
\}  
\}

VariantClear(&vtProp);  
\}

// Cleanup  
// ========  
  
pSvc->Release();  
pLoc->Release();  
pEnumerator->Release();  
pclsObj->Release();  
CoUninitialize();

return 0; // Program successfully completed.  
  
\}

转载于:https://blog.51cto.com/laokaddk/661141