获取本机MAC地址

来源：互联网发布：淘宝佣金怎么计算编辑：程序博客网时间：2024/04/29 15:54

主要还是参考MSDN关于IP_ADAPTER_INFO的描述：

http://msdn.microsoft.com/en-us/library/windows/desktop/aa366062%28v=vs.85%29.aspx

#include <winsock2.h>#include <iphlpapi.h>#include <stdio.h>#include <stdlib.h>#pragma comment(lib, "IPHLPAPI.lib")#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))int GetMacAddress(char *pMacAddr){    unsigned char pMac[6];    PIP_ADAPTER_INFO pAdapterInfo = NULL;    ULONG uLong = sizeof (IP_ADAPTER_INFO);    int ret = -1;    ULONG ulOutBufLen = sizeof (IP_ADAPTER_INFO);    pAdapterInfo = (IP_ADAPTER_INFO *) MALLOC(sizeof (IP_ADAPTER_INFO));    if (pAdapterInfo == NULL) {        TRACE("Error allocating memory needed to call GetAdaptersinfo\n");        return 1;    }    // Make an initial call to GetAdaptersInfo to get    // the necessary size into the ulOutBufLen variable    if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) == ERROR_BUFFER_OVERFLOW) {        FREE(pAdapterInfo);        pAdapterInfo = (IP_ADAPTER_INFO *) MALLOC(ulOutBufLen);        if (pAdapterInfo == NULL) {            TRACE("Error allocating memory needed to call GetAdaptersinfo\n");            return 1;        }    }    if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) != NO_ERROR)    {        goto EXIT;    }    if(NULL == pAdapterInfo)    {        goto EXIT;    }    ret = 0;    sprintf(pMacAddr, "%02X:%02X:%02X:%02X:%02X:%02X",         pAdapterInfo->Address[0], pAdapterInfo->Address[1], pAdapterInfo->Address[2],         pAdapterInfo->Address[3], pAdapterInfo->Address[4], pAdapterInfo->Address[5]);EXIT:    if (NULL != pAdapterInfo)    {        FREE(pAdapterInfo);    }    return ret;}

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