arp.rar_arp_arp协议_c arp mac_mac查询地址_visual c

#include "WINDOWS.H" #include "STDIO.H" #include "WINSOCK.H" #include "iphlpapi.h" #include "string.h" #pragma comment(lib,"ws2_32.lib") #pragma comment ( lib, "Iphlpapi.lib" ) void main( int argc, char ** argv ) { int numberOfHost = 12; struct hostent *remoteHostent; //处理命令行参数 if ( argc == 3 ) numberOfHost = atoi( argv[2] ); /*if ( ( argc >3 ) || ( argc < 2 ) ) { printf( "RmtHost v0.2 - Get remote HostName /MacAddress\n" ); printf( "by ShotgunLabs ( Shotgun@xici.net )\n\n" ); printf( "Usage　:\n\tRmtHost.exe [RemoteIP] \n\n" ); printf( "Example:\n\tRmtHost.exe 192.168.0.3\n" ); printf( "\tRmtHost.exe 192.168.0.3 255\n\n" ); exit( 0 ); } */ //初始化SOCKET WSADATA wsaData; int iRet = WSAStartup(MAKEWORD(2,1), &wsaData); if ( iRet != 0 ) { printf( "WSAStartup Error:%d\n", GetLastError() ); exit( 0 ); } int nRemoteAddr = inet_addr("202.193.161.241"); //inet_addr()将一个点间隔地址转换成一个in_addr //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 ); } }