/* $NetBSD: arpaname.c,v 1.3.4.1 2024/02/29 12:33:01 martin Exp $ */ /* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * SPDX-License-Identifier: MPL-2.0 * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ #include #include #include #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)); }