text: /*
   * Copyright (C) 2009  Internet Systems Consortium, Inc. ("ISC")
   *
   * Permission to use, copy, modify, and/or distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
   * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
   * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
   * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
   * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
   * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
   * PERFORMANCE OF THIS SOFTWARE.
   */
  
  /* $Id: arpaname.c,v 1.4 2009/10/27 03:05:33 marka Exp $ */
  
  #include "config.h"
  
  #include <isc/net.h>
  
  #include <stdio.h>
  
  #define UNUSED(x) (void)(x)
  
  int
  main(int argc, char *argv[]) {
  	unsigned char buf[16];
  	int i;
  
  	UNUSED(argc);
  
  	while (argv[1]) {
  		if (inet_pton(AF_INET6, argv[1], buf) == 1) {
  			for (i = 15; i >= 0; i--)
  				fprintf(stdout, "%X.%X.", buf[i] & 0xf,
  					(buf[i] >> 4) & 0xf);
  			fprintf(stdout, "IP6.ARPA\n");
  			argv++;
  			continue;
  		}
  		if (inet_pton(AF_INET, argv[1], buf) == 1) {
  			fprintf(stdout, "%u.%u.%u.%u.IN-ADDR.ARPA\n",
  				buf[3], buf[2], buf[1], buf[0]);
  			argv++;
  			continue;
  		}
  		return (1);
  	}
  	fflush(stdout);
  	return(ferror(stdout));
  }
  