external/bsd/bind/dist/bin/tools/arpaname.c

   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 }