获取指定IP地址远程主机的计算机名和Mac地址

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#struct #include #null

本文介绍了如何使用Winsock2库获取远程机器的IP地址、主机名和MAC地址，包括输入IP地址、使用gethostbyaddr函数获取主机名、发送ARP查询包获取MAC地址等步骤。

#include "stdio.h" #include "iostream.h" #include "winsock2.h" #include <iphlpapi.h> #pragma comment(lib,"iphlpapi.lib") #pragma comment(lib,"ws2_32.lib") void main() { char szIP[100]; HRESULT iRet; WSADATA wsd; WSAStartup(MAKEWORD(2,2),&wsd); int numberOfHost=1; struct hostent *remoteHostent; cout<<"请输入IP："<<endl; cin>>szIP; int nRemoteAddr=inet_addr(szIP); remoteHostent=(struct hostent*)malloc(sizeof(struct hostent)); struct in_addr sa; for(int i=0;i<numberOfHost;i++) { //获取远程机器名 sa.s_addr=nRemoteAddr; printf("/nIpAddress:%s/n",inet_ntoa(sa)); remoteHostent=gethostbyaddr((char*)&nRemoteAddr,4,AF_INET); if(remoteHostent) { printf("HostName:%s/n",remoteHostent->h_name); } else { printf("gethostbyaddr Error:%d/n ",GetLastError()); } } //发送ARP查询包获得远程MAC地址 unsigned char macAddress[6]; ULONG macAddLen=6; iRet=SendARP(nRemoteAddr,(unsigned long)NULL,(PULONG)&macAddress,&macAddLen); if(iRet==NO_ERROR) { printf("MacAddress:"); for(int i=0;i<6;i++) { printf("%.2x",macAddress[i]); if(i<5) { printf("-"); } } printf("/n"); } else { printf("SendARP Error:%d/n ",GetLastError()); } nRemoteAddr=htonl(ntohl(nRemoteAddr)+1); }