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/* $OpenBSD: whois.c,v 1.3 2007/03/05 16:43:24 henning Exp $ */
/*
* Copyright (c) 2007 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and 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 THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, 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.
*/
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "irrfilter.h"
#define WHOIS_STDOPTS "-r -a"
char *qtype_opts[] = {
"",
"-T aut-num",
"-K -T as-set",
"-K -T route -i origin"
};
char *server = "whois.radb.net";
char *port = "whois";
int
whois(const char *query, enum qtype qtype)
{
FILE *sfw, *sfr;
int s, r = -1, error = 0, attempt, ret;
struct addrinfo hints, *res, *ai;
const char *reason = NULL;
char *fmt;
memset(&hints, 0, sizeof(hints));
hints.ai_flags = 0;
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
error = getaddrinfo(server, port, &hints, &res);
if (error) {
if (error == EAI_SERVICE)
warnx("%s: bad port", port);
else
warnx("%s: %s", server, gai_strerror(error));
return (1);
}
for (s = -1, ai = res; ai != NULL; ai = ai->ai_next) {
attempt = 0;
do {
attempt++;
if (s != -1)
close(s);
s = socket(ai->ai_family, ai->ai_socktype,
ai->ai_protocol);
if (s == -1) {
error = errno;
reason = "socket";
} else
r = connect(s, ai->ai_addr, ai->ai_addrlen);
} while (r == -1 && errno == ETIMEDOUT && attempt <= 3);
if (r == -1) {
error = errno;
reason = "connect";
close(s);
s = -1;
continue;
}
if (s != -1)
break; /*okay*/
}
freeaddrinfo(res);
if (s == -1) {
if (reason) {
errno = error;
warn("%s: %s", server, reason);
} else
warn("unknown error in connection attempt");
return (1);
}
sfr = fdopen(s, "r");
sfw = fdopen(s, "w");
if (sfr == NULL || sfw == NULL)
err(1, "fdopen");
fmt = "%s %s %s\r\n";
fprintf(sfw, fmt, WHOIS_STDOPTS, qtype_opts[qtype], query);
fflush(sfw);
if ((ret = parse_response(sfr, qtype)) == -1)
warnx("parse error, query=\"%s %s\"", qtype_opts[qtype], query);
fclose(sfw);
fclose(sfr);
close(s);
return (ret);
}
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