#include #include #include #include #include #include #include #include #include #include #include #include _cdecl main(int argc, char **argv) { WSADATA wsaData; struct hostent * lpHostEnt; char * lpTemp; BYTE AddrBuffer[1000]; BYTE AliasBuffer[1000]; DWORD AddrBufLen = 1000; DWORD AliasBufLen = 1000; LPCSADDR_INFO lpCSAddrInfo = (LPCSADDR_INFO) AddrBuffer; LPSTR lpAliases = (LPSTR) AliasBuffer; GUID dnsGuid = SVCID_DOMAIN_TCP; char ** ppHostAliases; DWORD iter; if ( argc != 2 ) { printf( "\nUseage: ghbn \n" ); return( -1 ); } WSAStartup( MAKEWORD(1, 1), &wsaData ); system( "pause" ); for ( iter = 0; iter < 10000; iter ++ ) { lpHostEnt = gethostbyname( argv[1] ); } system( "pause" ); if ( lpHostEnt ) { DWORD iter = 0; printf( "\nHost address found for %s.\n", argv[1] ); printf( "Official name of host: %s\n", lpHostEnt->h_name ); ppHostAliases = lpHostEnt->h_aliases; while ( *ppHostAliases ) printf( "Alias name: %s\n", *ppHostAliases++ ); printf( "Host address type: %d\n", lpHostEnt->h_addrtype ); printf( "Length of addresses: %d\n", lpHostEnt->h_length ); while ( lpHostEnt->h_addr_list[iter] ) { printf( "Address %d\t: [%d.%d.%d.%d]\n", iter + 1, 0x00FF & (WORD) lpHostEnt->h_addr_list[iter][0], 0x00FF & (WORD) lpHostEnt->h_addr_list[iter][1], 0x00FF & (WORD) lpHostEnt->h_addr_list[iter][2], 0x00FF & (WORD) lpHostEnt->h_addr_list[iter][3] ); iter++; } } else { printf( "\nNo host found for %s.\nError: %d", argv[1], WSAGetLastError() ); } WSACleanup(); return( 0 ); }