getmacadapters.cpp

利用iphlpapi的API函数GetAdaptersInfo获取MAC

// GetMACAdapters.cpp : Defines the entry point for the console application.
//
// Author:	Khalid Shaikh [[e-mail]]
// Date:	April 5th, 2002
//
// This program fetches the MAC address of the localhost by fetching the 
// information through GetAdapatersInfo.  It does not rely on the NETBIOS
// protocol and the ethernet adapter need not be connect to a network.
//
// Supported in Windows NT/2000/XP
// Supported in Windows 95/98/Me
//
// Supports multiple NIC cards on a PC.

#include "stdafx.h"
#include <Windows.h>
#include <Iphlpapi.h>
#include <Assert.h>
#pragma comment(lib, "iphlpapi.lib")

// Prints the MAC address stored in a 6 byte array to stdout
static void PrintMACaddress(unsigned char MACData[])
{
	printf("MAC Address: %02X-%02X-%02X-%02X-%02X-%02X\n", 
		MACData[0], MACData[1], MACData[2], MACData[3], MACData[4], MACData[5]);
}

// Fetches the MAC address and prints it
static void GetMACaddress(void)
{
	IP_ADAPTER_INFO AdapterInfo[16];			// Allocate information for up to 16 NICs
	DWORD dwBufLen = sizeof(AdapterInfo);		// Save the memory size of buffer

	DWORD dwStatus = GetAdaptersInfo(			// Call GetAdapterInfo
		AdapterInfo,							// [out] buffer to receive data
		&dwBufLen);								// [in] size of receive data buffer
	assert(dwStatus == ERROR_SUCCESS);			// Verify return value is valid, no buffer overflow

	PIP_ADAPTER_INFO pAdapterInfo = AdapterInfo;// Contains pointer to current adapter info
	do {
		PrintMACaddress(pAdapterInfo->Address);	// Print MAC address
		pAdapterInfo = pAdapterInfo->Next;		// Progress through linked list
	}
	while(pAdapterInfo);						// Terminate if last adapter
}

int _tmain(int argc, _TCHAR* argv[])
{
	GetMACaddress();							// Obtain MAC address of adapters

	return 0;
}