C++ 硬件信息 获取网卡MAC地址

获取计算机网卡MAC地址的方法很多，这里采用的是命令行的形式获取，可以获取有线网卡与无线网卡的MAC地址，很简单，直接上代码。

【1】头文件

#if !defined(AFX_95644697_C78F_4DD6_885B_3D7C40B2D55C__INCLUDED_)
#define AFX_95644697_C78F_4DD6_885B_3D7C40B2D55C__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <iostream>
#include <string>
#include <windows.h>

using namespace std;

//--------------------------------------------------------------
//            网卡MAC地址
//--------------------------------------------------------------
BOOL GetMacByCmd(char *lpszMac, int len=128);


#endif // !defined(AFX_95644697_C78F_4DD6_885B_3D7C40B2D55C__INCLUDED_)

【2】CPP文件

#include "stdafx.h"
#include "MacID.h"


//--------------------------------------------------------------
//            网卡MAC地址
//--------------------------------------------------------------
BOOL GetMacByCmd(char *lpszMac, int len/*=128*/)
{ 
  const long MAX_COMMAND_SIZE = 10000; //命令行输出缓冲大小  
  WCHAR szFetCmd[]      = L"ipconfig /all"; //获取MAC命令行  
  const string strEnSearch = "Physical Address. . . . . . . . . : "; //网卡MAC地址的前导信息
  const string strChSearch = "物理地址. . . . . . . . . . . . . : ";
  
  BOOL   bret     = FALSE;
  HANDLE hReadPipe  = NULL; //读取管道
  HANDLE hWritePipe = NULL; //写入管道  
  PROCESS_INFORMATION pi;   //进程信息  
  STARTUPINFO     si;   //控制命令行窗口信息
  SECURITY_ATTRIBUTES sa;   //安全属性

  char      szBuffer[MAX_COMMAND_SIZE+1] = {0}; //放置命令行结果的输出缓冲区
  string      strBuffer;
  unsigned long count = 0;
  long      ipos  = 0;

  pi.hProcess = NULL;
  pi.hThread  = NULL;
  si.cb   = sizeof(STARTUPINFO);
  sa.nLength  = sizeof(SECURITY_ATTRIBUTES);
  sa.lpSecurityDescriptor = NULL;
  sa.bInheritHandle   = TRUE;

  //1.0 创建管道
  bret = CreatePipe(&hReadPipe, &hWritePipe, &sa, 0);
  if(!bret)
  {
    goto END;
  }

  //2.0 设置命令行窗口的信息为指定的读写管道
  GetStartupInfo(&si);
  si.hStdError  = hWritePipe;
  si.hStdOutput = hWritePipe;
  si.wShowWindow  = SW_HIDE; //隐藏命令行窗口
  si.dwFlags    = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;

  //3.0 创建获取命令行的进程
  bret = CreateProcess(NULL, szFetCmd, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi );
  if(!bret)
  {
    goto END;
  } 

  //4.0 读取返回的数据
  WaitForSingleObject (pi.hProcess, 2000/*INFINITE*/);
  bret  =  ReadFile(hReadPipe,  szBuffer,  MAX_COMMAND_SIZE,  &count,  0);
  if(!bret)
  {
    goto END;
  }

  //5.0 查找MAC地址，默认查找第一个,一般为以太网的MAC
  strBuffer = szBuffer;
  ipos = strBuffer.find(strEnSearch);

  if (ipos < 0)//区分中英文的系统
  {   
    ipos = strBuffer.find(strChSearch);
    if (ipos < 1)
    {
      goto END;
    }
    //提取MAC地址串
    strBuffer = strBuffer.substr(ipos+strChSearch.length());
  }
  else
  {
    //提取MAC地址串
    strBuffer = strBuffer.substr(ipos+strEnSearch.length());
  }
      
  ipos = strBuffer.find("\n");
  strBuffer = strBuffer.substr(0, ipos);  

  memset(szBuffer, 0x00, sizeof(szBuffer));
  strcpy_s(szBuffer, strBuffer.c_str());

  //去掉中间的“00-50-EB-0F-27-82”中间的'-'得到0050EB0F2782
  int j = 0;
  for(int i=0; i<strlen(szBuffer); i++)
  {
    if(szBuffer[i] != '-')
    {
      lpszMac[j] = szBuffer[i];
      j++;
    }
  }

  bret = TRUE;

END:
  //关闭所有的句柄
  CloseHandle(hWritePipe);
  CloseHandle(hReadPipe);
  CloseHandle(pi.hProcess);
  CloseHandle(pi.hThread);

  return(bret);
}

【3】测试

char lpszMac[128] = {0};
  //获取MAC
  GetMacByCmd(lpszMac);
  //打印出MAC
  cout << lpszMac << endl;