获取网卡mac地址，区分虚拟机网卡

最新推荐文章于 2024-02-19 19:00:58 发布

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#虚拟机 #path #null #byte #network

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本文介绍了一个C++函数MacAddressToString，用于将网卡MAC地址转换为字符串，并提供了一个GetMacByCmd函数，通过遍历IP_ADAPTER_INFO结构来获取本地物理网卡的MAC地址，同时能避免获取到虚拟机的网卡地址。

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BOOL IsLocalAdapter( const char *pAdapterName )
{
BOOL ret_value = FALSE;
char szDataBuf[MAX_PATH+1] = {0};
DWORD dwDataLen = MAX_PATH;
DWORD dwType = REG_SZ;
HKEY hLocalNet = NULL;

#define NET_CARD_KEY (_T("System\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}"))
sprintf(szDataBuf, "%s\\%s\\Connection",NET_CARD_KEY, pAdapterName);

if(ERROR_SUCCESS != RegOpenKeyEx(HKEY_LOCAL_MACHINE ,szDataBuf ,0 ,KEY_READ, &hLocalNet))
{
return FALSE;
}

/*注册表中网卡信息有的没有该项
if (ERROR_SUCCESS != RegQueryValueEx(hLocalNet, _T("MediaSubType"), 0, &dwType, (BYTE *)szDataBuf, &dwDataLen))
{
goto ret;
}
if (*((DWORD *)szDataBuf)!=0x01)
goto ret;
*/
dwDataLen = MAX_PATH;
memset(szDataBuf,0,sizeof(szDataBuf));
if (ERROR_SUCCESS != RegQueryValueEx(hLocalNet, _T("PnpInstanceID"), 0, &dwType, (BYTE *)szDataBuf, &dwDataLen))
{
goto ret;
}

if (strncmp(szDataBuf, "PCI", strlen("PCI")))
{
//注册表中网卡信息中该项值中的"PCI"并不都位于最前
CString id = szDataBuf;
int ret = id.Find("PCI");
if ( ret == -1 )
{
goto ret;
}
}

ret_value = TRUE;

ret:
RegCloseKey(hLocalNet);

return ret_value;
}

void MacAddressToString(const LPBYTE Address, LPSTR lpsz, int nAddressLength = 6)
{
LPSTR p = lpsz;
for ( int i = 0; i < nAddressLength ; i++ )
{
p += sprintf( p, i ? ":%02x" : "%02x", Address[i]);
}
}

#if 1
#include"stdafx.h"
#include<atlbase.h>
#include<atlconv.h>
#include"iphlpapi.h"
#pragma comment(lib,"Iphlpapi.lib")
int GetMacByCmd( char* mac )
{
PIP_ADAPTER_INFO pAdapterInfo;
DWORD AdapterInfoSize = 0;
DWORD dwRetVal=0;

GetAdaptersInfo(NULL,&AdapterInfoSize);
pAdapterInfo = ( PIP_ADAPTER_INFO )GlobalAlloc(GPTR,AdapterInfoSize);

GetAdaptersInfo(pAdapterInfo,&AdapterInfoSize);

PIP_ADAPTER_INFO pAdapter = pAdapterInfo;

while(pAdapter)
{
  if ( IsLocalAdapter(pAdapter->AdapterName) )
  {
   MacAddressToString(pAdapter->Address,mac,pAdapter->AddressLength);
   break;
  }
  else
  {
   pAdapter = pAdapter->Next;
  }
}
GlobalFree(pAdapterInfo);
return 0;
}
#endif