win32 获取本机mac地址（两种方法）

直接上代码#ifdef _UNICODE
#define tString std::wstring
#else
#define tString std::string
#endif

#include <httpext.h>
#include <windef.h>
#include <nb30.h>
#pragma comment(lib,"netapi32")

#include <atlbase.h>
#include <atlconv.h>
#include "iphlpapi.h"
#pragma comment ( lib, "Iphlpapi.lib" )

bool GetMAC(tString &strMac)
{
TCHAR mac[20] = { 0 };
NCB ncb;
typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff[30];
}ASTAT, *PASTAT;

ASTAT Adapter;

typedef struct _LANA_ENUM
{
UCHAR length;
UCHAR lana[MAX_LANA];
}LANA_ENUM;

LANA_ENUM lana_enum;
UCHAR uRetCode;
memset(&ncb, 0, sizeof(ncb));
memset(&lana_enum, 0, sizeof(lana_enum));
ncb.ncb_command = NCBENUM;
ncb.ncb_buffer = (unsigned char *)&lana_enum;
ncb.ncb_length = sizeof(LANA_ENUM);
uRetCode = Netbios(&ncb);

if (uRetCode != NRC_GOODRET)
return false;

for (int lana = 0; lana < lana_enum.length; lana++)
{
ncb.ncb_command = NCBRESET;
ncb.ncb_lana_num = lana_enum.lana[lana];
uRetCode = Netbios(&ncb);
if (uRetCode == NRC_GOODRET)
break;
}

if (uRetCode != NRC_GOODRET)
return false;

memset(&ncb, 0, sizeof(ncb));
ncb.ncb_command = NCBASTAT;
ncb.ncb_lana_num = lana_enum.lana[0];
strcpy_s((char*)ncb.ncb_callname, sizeof("*"),"*");
ncb.ncb_buffer = (unsigned char *)&Adapter;
ncb.ncb_length = sizeof(Adapter);
uRetCode = Netbios(&ncb);

if (uRetCode != NRC_GOODRET)
return false;

_stprintf_s(mac,20, _T("%02X:%02X:%02X:%02X:%02X:%02X"),
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5]);

strMac = mac;

_tprintf(_T("Get local mac address!\n"));

return true;
}

bool getActiveMac(char* sMac)
{
bool bRtn = false;
PIP_ADAPTER_INFO pAdapterInfo;
PIP_ADAPTER_INFO pAdapter = NULL;
DWORD dwRetVal = 0;
pAdapterInfo = (IP_ADAPTER_INFO *)malloc(sizeof(IP_ADAPTER_INFO));
ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);
if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) != ERROR_SUCCESS)
{
free(pAdapterInfo);
pAdapterInfo = (IP_ADAPTER_INFO *)malloc(ulOutBufLen);
}
if ((dwRetVal = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen)) == NO_ERROR)
{
pAdapter = pAdapterInfo;
char szMac[20] = { 0 };
char szAddress[4] = { 0 };
while (pAdapter)
{

if (strcmp(pAdapter->IpAddressList.IpAddress.String, "0.0.0.0") != 0)
{
for (UINT i = 0; i < pAdapter->AddressLength; i++)
{
sprintf_s(szAddress, "%02X", pAdapter->Address[i]);
strcat_s(szMac, szAddress);
if (i != pAdapter->AddressLength - 1)
{
strcat_s(szMac, ":");
}
}
break;
}
pAdapter = pAdapter->Next;
}
memcpy(sMac, szMac, strlen(szMac));
bRtn = true;
}

return bRtn;
}

int _tmain(int argc, _TCHAR* argv[])
{
_tprintf(_T("one method!\n"));
tString strMac;
if (GetMAC(strMac))
{
_tprintf(_T("%s\n"), strMac.c_str());
}
else
{
_tprintf(_T("Get nothing!\n"));
}

_tprintf(_T("\ntwo method!\n"));
char sMac[20] = { 0 };
getActiveMac(sMac);
printf("%s\n", sMac);

return 0;
}