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/* $OpenBSD: whois.c,v 1.5 2013/10/27 18:49:25 guenther Exp $ */ |
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/* |
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* Copyright (c) 2007 Henning Brauer <henning@openbsd.org> |
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* |
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* Permission to use, copy, modify, and 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 THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN |
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
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* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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/* |
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* Copyright (c) 1980, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <arpa/inet.h> |
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#include <netdb.h> |
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#include <ctype.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "irrfilter.h" |
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#define WHOIS_STDOPTS "-r -a" |
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char *qtype_opts[] = { |
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"", |
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"-T aut-num", |
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"-K -T as-set", |
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"-K -T route -i origin", |
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"-K -T route6 -i origin" |
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}; |
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char *server = "whois.radb.net"; |
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char *port = "whois"; |
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int |
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whois(const char *query, enum qtype qtype) |
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{ |
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FILE *sfw, *sfr; |
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int s, r = -1, error = 0, attempt, ret; |
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struct addrinfo hints, *res, *ai; |
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const char *reason = NULL; |
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memset(&hints, 0, sizeof(hints)); |
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hints.ai_flags = 0; |
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hints.ai_family = AF_UNSPEC; |
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hints.ai_socktype = SOCK_STREAM; |
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error = getaddrinfo(server, port, &hints, &res); |
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if (error) { |
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if (error == EAI_SERVICE) |
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warnx("%s: bad port", port); |
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else |
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warnx("%s: %s", server, gai_strerror(error)); |
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return (1); |
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} |
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for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) { |
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attempt = 0; |
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do { |
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attempt++; |
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if (s != -1) |
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close(s); |
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s = socket(ai->ai_family, ai->ai_socktype, |
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ai->ai_protocol); |
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if (s == -1) { |
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error = errno; |
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reason = "socket"; |
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} else |
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r = connect(s, ai->ai_addr, ai->ai_addrlen); |
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} while (r == -1 && errno == ETIMEDOUT && attempt <= 3); |
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if (r == -1) { |
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error = errno; |
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reason = "connect"; |
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close(s); |
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s = -1; |
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continue; |
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} |
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if (s != -1) |
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break; /*okay*/ |
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} |
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freeaddrinfo(res); |
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if (s == -1) { |
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if (reason) { |
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errno = error; |
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warn("%s: %s", server, reason); |
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} else |
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warn("unknown error in connection attempt"); |
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return (1); |
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} |
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sfr = fdopen(s, "r"); |
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sfw = fdopen(s, "w"); |
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if (sfr == NULL || sfw == NULL) |
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err(1, "fdopen"); |
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fprintf(sfw, "%s %s %s\r\n", WHOIS_STDOPTS, qtype_opts[qtype], query); |
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fflush(sfw); |
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if ((ret = parse_response(sfr, qtype)) == -1) |
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warnx("parse error, query=\"%s %s\"", qtype_opts[qtype], query); |
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fclose(sfw); |
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fclose(sfr); |
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close(s); |
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return (ret); |
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} |