利用WMI获取本机基本信息

Posted 2022-06-06 T20140401

一.WMI简介

WMI是一项核心的Windows管理技术，WMI作为一种规范和基础结构，通过它可以访问、配置、管理和监视几乎所有的Windows资源，比如用户可以在远程计算机器上启动一个进程；设定一个在特定日期和时间运行的进程；远程启动计算机；获得本地或远程计算机的已安装程序列表；查询本地或远程计算机的Windows事件日志等等。

二.利用WMI获取本机基本信息

在这里，主要是利用wmi提供的一些接口实现了一个简单的类，可以方便的调用，获取本机序列号信息。头文件如下：

#pragma once
#include<atlbase.h>
#include<objbase.h>
#include<WbemIdl.h>
#include<WbemCli.h>
#include<comdef.h>

#pragma comment(lib,"wbemuuid.lib")
#pragma comment(lib,"ole32.lib")

#define DEF_MAX_WBEMOBJ	20
#define DEF_MAX_PATH	260


class TClientDMI

public:
	TClientDMI();
	~TClientDMI();
public:
	CString	 getDMIInformation(TCHAR *pWin32_ClassName, TCHAR *pUniqueCaption,TCHAR *pUniqueValue, TCHAR *pTargetCaption);

private:
	HRESULT	 _initDMI();
private:
	BSTR	 m_strNameSpace;
	BOOL	 m_blDMIInit;			//DMI init flag
private:
	IWbemLocator*		    m_pIWbemLocator;
	IWbemServices*			m_pIWbemServices;
	IEnumWbemClassObject*	m_pIEnumWbem;
	IWbemClassObject*		m_szIWbemObject[DEF_MAX_WBEMOBJ];
	BSTR					m_strClassName;

;

源文件：

#include"stdafx.h"

TClientDMI::TClientDMI()

	m_blDMIInit	= FALSE;
	m_strNameSpace	= NULL;
	m_pIWbemLocator = NULL;
	m_pIWbemServices= NULL;
	m_pIEnumWbem	= NULL;
	m_strClassName	= NULL;

	for (int i=0;i<DEF_MAX_WBEMOBJ;i++)
	
		m_szIWbemObject[i] = NULL;
	


TClientDMI::~TClientDMI()

	if (m_pIEnumWbem != NULL)
	 
		m_pIEnumWbem->Release();
		m_pIEnumWbem = NULL;
	

	if (m_strClassName != NULL)
	
		SysFreeString(m_strClassName);
		m_strClassName = NULL;
	

	if (m_strNameSpace != NULL)
	
		SysFreeString(m_strNameSpace);
		m_strNameSpace = NULL;
	
	
	if (m_pIWbemServices != NULL)
	
		m_pIWbemServices->Release();
		m_pIWbemServices = NULL;
	

	if (m_pIWbemLocator != NULL)
	
		m_pIWbemLocator->Release();
		m_pIWbemLocator = NULL;
	

	CoUninitialize();


//
//	
//			init DMI interface
//
//


HRESULT TClientDMI::_initDMI()

	HRESULT hr = CoInitializeEx(0, COINIT_MULTITHREADED);
	if (FAILED(hr))
	
		return hr;
	

	hr = CoInitializeSecurity(NULL, -1, NULL, NULL,
		RPC_C_AUTHN_LEVEL_PKT_PRIVACY,
		RPC_C_IMP_LEVEL_IMPERSONATE,
		NULL, EOAC_SECURE_REFS, NULL);

	if (FAILED(hr))
	
		return hr;
	

	hr = CoCreateInstance(CLSID_WbemLocator, NULL, CLSCTX_INPROC_SERVER,
		IID_IWbemLocator, (LPVOID*)&m_pIWbemLocator);
	if (FAILED(hr))
	
		return hr;
	

	m_strNameSpace = SysAllocString(_T("\\\\\\\\.\\\\root\\\\cimv2"));
	hr = m_pIWbemLocator->ConnectServer(m_strNameSpace, NULL, NULL, 0L, 0L, NULL, NULL, &m_pIWbemServices);

	if (FAILED(hr))
	
		return hr;
	
	
	m_blDMIInit = TRUE;
	return hr;


//
//				common query process
//step1. Init DMI interface
//step2. Get ClassInformation
//step3. Get Instance
//step4. Get the property of Instance
//

CString TClientDMI::getDMIInformation(TCHAR *pWin32_ClassName, TCHAR *pUniqueCaption, TCHAR *pUniqueValue, TCHAR *pTargetCaption)

	CString strRet = _T("");
//	TCHAR szTarget[MAX_PATH] =  0 ;
	HRESULT hr = S_OK;
	if (!m_blDMIInit)
	
		hr= _initDMI();
	
	if (SUCCEEDED(hr))
	
		VARIANT var;
		ULONG uReturned;
		HRESULT hr;
		VariantInit(&var);

		m_pIEnumWbem = NULL;
		m_strClassName = NULL;
		m_strClassName = SysAllocString(pWin32_ClassName);

		if (!m_strClassName)
		
			return strRet;
		

		hr = m_pIWbemServices->CreateInstanceEnum(m_strClassName, 0, NULL, &m_pIEnumWbem);

		if (FAILED(hr))
		
			return strRet;
		

		uReturned = 1;
		hr = m_pIEnumWbem->Next(2000 * DEF_MAX_WBEMOBJ, DEF_MAX_WBEMOBJ, m_szIWbemObject, &uReturned);

		if (FAILED(hr))
		
			return strRet;
		
		VariantClear(&var);

		UINT i = 0;
		for (i = 0; i < uReturned; i++)
		
			if (m_szIWbemObject[i] != NULL)	
			
			
				VariantClear(&var);
				var.bstrVal = NULL;

				if (pUniqueCaption != NULL)
				
					hr = m_szIWbemObject[i]->Get(pUniqueCaption, 0, &var, NULL, NULL);
					if (hr != WBEM_S_NO_ERROR)
					
						return strRet;
					
				
			
				if (pUniqueCaption == NULL || var.bstrVal!=NULL && _tcsncmp((V_BSTR(&var)), 

<span style="white-space:pre">						</span>pUniqueValue, _tcslen(pUniqueValue)) == 0)
				
					VariantClear(&var);
					var.bstrVal = NULL;
					hr = m_szIWbemObject[i]->Get(pTargetCaption, 0, &var, NULL, NULL);
					if (var.bstrVal!=NULL)
					
						strRet = var.bstrVal;
//						_tcscpy(szTarget, var.bstrVal);
					
					break;
				
			

		

		VariantClear(&var);
	

	return strRet;

获取本机序列号，无线网卡设备ID，以及mac地址。

#include "stdafx.h"

int main(int argc, TCHAR* argv[])

	int ret = 0;

<span style="white-space:pre">	TCHAR szTarget[DEF_MAX_PATH] =  0 ;</span>
	CString str = _T("");
	TClientDMI *pDMI = new TClientDMI;

	str = pDMI->getDMIInformation(_T("Win32_Bios"), NULL, NULL, _T("SerialNumber"));

	_tprintf(_T("%str\\n"), str);
	_tcscpy(szTarget, pDMI->getDMIInformation(_T("Win32_NetworkAdapter"), _T("NetConnectionID"), _T("WLAN"), _T("PNPDeviceID")));
	
	_tcscpy(szTarget, pDMI->getDMIInformation(_T("Win32_DiskDrive"), NULL, NULL, _T("InterfaceType")));
	_tprintf(_T("%s\\n"), szTarget);
	_tcscpy(szTarget, pDMI->getDMIInformation(_T("Win32_NetworkAdapter"), _T("NetConnectionID"), _T("Ethernet"), _T("MACAddress")));
	_tprintf(_T("%s\\n"), szTarget);

	if (pDMI)
	
		delete pDMI;
		pDMI = NULL;
	

	return ret;

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