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