1 /* $NetBSD: arpaname.c,v 1.4 2014/12/10 04:37:54 christos Exp $ */ 2 3 /* 4 * Copyright (C) 2009 Internet Systems Consortium, Inc. ("ISC") 5 * 6 * Permission to use, copy, modify, and/or distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 11 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 12 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 13 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 14 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 15 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /* Id: arpaname.c,v 1.4 2009/10/27 03:05:33 marka Exp */ 20 21 #include "config.h" 22 23 #include <isc/net.h> 24 25 #include <stdio.h> 26 27 #define UNUSED(x) (void)&(x) 28 29 int 30 main(int argc, char *argv[]) { 31 unsigned char buf[16]; 32 int i; 33 34 UNUSED(argc); 35 36 while (argv[1]) { 37 if (inet_pton(AF_INET6, argv[1], buf) == 1) { 38 for (i = 15; i >= 0; i--) 39 fprintf(stdout, "%X.%X.", buf[i] & 0xf, 40 (buf[i] >> 4) & 0xf); 41 fprintf(stdout, "IP6.ARPA\n"); 42 argv++; 43 continue; 44 } 45 if (inet_pton(AF_INET, argv[1], buf) == 1) { 46 fprintf(stdout, "%u.%u.%u.%u.IN-ADDR.ARPA\n", 47 buf[3], buf[2], buf[1], buf[0]); 48 argv++; 49 continue; 50 } 51 return (1); 52 } 53 fflush(stdout); 54 return(ferror(stdout)); 55 } 56