#include <stdio.h>

 #include <Windows.h>

 #include <IPHlpApi.h>

 #pragma comment(lib,"ws2_32.lib")    // Socket静态库,取本机IP用

 #pragma comment(lib,"IPHlpApi.lib")    // 发送ARP报文要用的静态库,取MAC用

 /*

     取主机名

     成功返回主机名,失败返回NULL.

 */

 char *MyGetHostName(void);

 /*

     取本机IP

     成功返回本机IP,失败返回NULL.

 */

 char *MyGetHostIp(void);

 /*

     取本机MAC

     成功返回本机MAC,失败返回NULL.

 */

 char *MyGetHostMac(void);

 int main(void)

 {

     char *lpName = NULL;

     char *lpIp = NULL;

     char *lpMac = NULL;

     lpName = MyGetHostName();

     lpIp = MyGetHostIp();

     lpMac = MyGetHostMac();

     printf("PCName : %s\n", lpName);

     printf("IPAddr : %s\n", lpIp);

     printf("M A C  : %s\n", lpMac);

     free(lpName);

     free(lpIp);

     free(lpMac);

     system("pause");

     return ;

 }

 char *MyGetHostName(void)

 {

     char *lpName = NULL;

     DWORD dwLen = ;

     GetComputerName(NULL, &dwLen);

     lpName = (char *)malloc(dwLen);

     memset(lpName, , dwLen);

     GetComputerName(lpName, &dwLen);

     return (lpName ? lpName : NULL);

 }

 char *MyGetHostIp(void)

 {

     char *ip = NULL;

     WSADATA wsaData = {  };

     struct hostent *phostinfo = NULL;

     ip = (char *)malloc(sizeof(char)* );

     memset(ip, , );

     WSAStartup(MAKEWORD(, ), &wsaData);

     phostinfo = gethostbyname("");

     lstrcpyn(ip, inet_ntoa(*(struct in_addr *)(*phostinfo->h_addr_list)), );

     WSACleanup();

     if (ip)

     {

         return ip;

     }

     else {

         free(ip);

         return NULL;

     }

 }

 char *MyGetHostMac(void)

 {

     IPAddr ip = inet_addr(MyGetHostIp());

     PVOID *pMac = NULL;

     ULONG MacAddr[] = {  };    // Mac地址长度6字节

     ULONG uMacSize = ;

     // 通过ARP报文响应获取MAC地址

     DWORD dwRet = SendARP(ip, , &MacAddr, &uMacSize);

     if (dwRet == NO_ERROR)

     {

         BYTE *bPhyAddr = (BYTE *)MacAddr;

         if (uMacSize)

         {

             char *sMac = (char *)malloc(sizeof(char)* );

             int n = ;

             memset(sMac, , );

             sprintf_s(sMac, (size_t), "%.2X-%.2X-%.2X-%.2X-%.2X-%.2X", (int)bPhyAddr[], (int)bPhyAddr[], (int)bPhyAddr[], (int)bPhyAddr[], (int)bPhyAddr[], (int)bPhyAddr[]);

             return sMac;

         }

         else

         {

             printf("Mac地址获取失败！\n");

         }

     }

     else

     {

         printf("ARP报文发送失败:%d\n",dwRet);

     }

     return NULL;

 }