获取局域网目的主机mac

// get_mac.cpp : 定义控制台应用程序的入口点。
//




#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif


#include <winsock2.h>
#include <iphlpapi.h>
#include <stdio.h>
#include <stdlib.h>


#pragma comment(lib, "iphlpapi.lib")
#pragma comment(lib, "ws2_32.lib")




int __cdecl main(int argc, char **argv)
{
    DWORD dwRetVal;
    IPAddr DestIp = 0;
    IPAddr SrcIp = 0;       /* default for src ip */
    ULONG MacAddr[2];       /* for 6-byte hardware addresses */
    ULONG PhysAddrLen = 6;  /* default to length of six bytes */


    char *DestIpString = NULL;
    char *SrcIpString = NULL;


    BYTE *bPhysAddr;
    unsigned int i;




    DestIpString = "222.18.176.173";//输入要获取mac的Ip


    DestIp = inet_addr(DestIpString);


    memset(&MacAddr, 0xff, sizeof (MacAddr));


    printf("Sending ARP request for IP address: %s\n", DestIpString);


    dwRetVal = SendARP(DestIp, SrcIp, &MacAddr, &PhysAddrLen);


    if (dwRetVal == NO_ERROR) {
        bPhysAddr = (BYTE *) & MacAddr;
        if (PhysAddrLen) {
            for (i = 0; i < (int) PhysAddrLen; i++) {
                if (i == (PhysAddrLen - 1))
                    printf("%.2X\n", (int) bPhysAddr[i]);
                else
                    printf("%.2X-", (int) bPhysAddr[i]);
            }
        } else
            printf
                ("Warning: SendArp completed successfully, but returned length=0\n");


    } else {
        printf("Error: SendArp failed with error: %d", dwRetVal);
        switch (dwRetVal) {
        case ERROR_GEN_FAILURE:
            printf(" (ERROR_GEN_FAILURE)\n");
            break;
        case ERROR_INVALID_PARAMETER:
            printf(" (ERROR_INVALID_PARAMETER)\n");
            break;
        case ERROR_INVALID_USER_BUFFER:
            printf(" (ERROR_INVALID_USER_BUFFER)\n");
            break;
        case ERROR_BAD_NET_NAME:
            printf(" (ERROR_GEN_FAILURE)\n");
            break;
        case ERROR_BUFFER_OVERFLOW:
            printf(" (ERROR_BUFFER_OVERFLOW)\n");
            break;
        case ERROR_NOT_FOUND:
            printf(" (ERROR_NOT_FOUND)\n");
            break;
        default:
            printf("\n");
            break;
        }
    }


    return 0;
}