/* $OpenBSD: yppoll.c,v 1.15 2015/01/16 06:40:22 deraadt Exp $ */
/* $NetBSD: yppoll.c,v 1.5 1996/05/13 02:46:36 thorpej Exp $ */
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1992, 1993 Theo de Raadt <deraadt@openbsd.org>
* Copyright (c) 1992, 1993 John Brezak
* 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. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <ctype.h>
#include <err.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <rpc/rpc.h>
#include <rpc/xdr.h>
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>
static void
usage(void)
{
fprintf(stderr, "usage: yppoll [-d domain] [-h host] mapname\n");
exit(1);
}
static int
get_remote_info(char *indomain, char *inmap, char *server, int *outorder,
char **outname)
{
struct ypresp_order ypro;
struct ypresp_master yprm;
struct ypreq_nokey yprnk;
struct timeval tv;
struct sockaddr_in rsrv_sin;
int rsrv_sock;
CLIENT *client;
struct hostent *h;
int r;
bzero((char *)&rsrv_sin, sizeof rsrv_sin);
rsrv_sin.sin_len = sizeof rsrv_sin;
rsrv_sin.sin_family = AF_INET;
rsrv_sock = RPC_ANYSOCK;
h = gethostbyname(server);
if (h == NULL) {
if (inet_aton(server, &rsrv_sin.sin_addr) == 0)
errx(1, "unknown host %s.", server);
} else
rsrv_sin.sin_addr.s_addr = *(u_int32_t *)h->h_addr;
tv.tv_sec = 10;
tv.tv_usec = 0;
client = clntudp_create(&rsrv_sin, YPPROG, YPVERS, tv, &rsrv_sock);
if (client == NULL)
errx(1, "clntudp_create: no contact with host %s.", server);
yprnk.domain = indomain;
yprnk.map = inmap;
bzero((char *)(char *)&ypro, sizeof ypro);
r = clnt_call(client, YPPROC_ORDER, (xdrproc_t)xdr_ypreq_nokey, &yprnk,
(xdrproc_t)xdr_ypresp_order, &ypro, tv);
if (r != RPC_SUCCESS)
clnt_perror(client, "yp_order: clnt_call");
*outorder = ypro.ordernum;
xdr_free((xdrproc_t)xdr_ypresp_order, (char *)&ypro);
r = ypprot_err(ypro.status);
if (r == RPC_SUCCESS) {
bzero((char *)&yprm, sizeof yprm);
r = clnt_call(client, YPPROC_MASTER, (xdrproc_t)xdr_ypreq_nokey,
&yprnk, (xdrproc_t)xdr_ypresp_master, &yprm, tv);
if (r != RPC_SUCCESS)
clnt_perror(client, "yp_master: clnt_call");
r = ypprot_err(yprm.status);
if (r == 0)
*outname = (char *)strdup(yprm.master);
xdr_free((xdrproc_t)xdr_ypresp_master, (char *)&yprm);
}
clnt_destroy(client);
return (r);
}
int
main(int argc, char *argv[])
{
char *domainname, *hostname = NULL, *inmap, *master;
int order, c, r;
time_t torder;
yp_get_default_domain(&domainname);
while ((c = getopt(argc, argv, "h:d:")) != -1)
switch (c) {
case 'd':
domainname = optarg;
break;
case 'h':
hostname = optarg;
break;
default:
usage();
/*NOTREACHED*/
}
if (optind + 1 != argc)
usage();
inmap = argv[optind];
if (hostname != NULL) {
r = get_remote_info(domainname, inmap, hostname,
&order, &master);
} else {
r = yp_order(domainname, inmap, &order);
if (r == 0)
r = yp_master(domainname, inmap, &master);
}
if (r != 0)
errx(1, "no such map %s: reason: %s",
inmap, yperr_string(r));
torder = order;
printf("Map %s has order number %lld. %s", inmap,
(long long)order, ctime(&torder));
printf("The master server is %s.\n", master);
exit(0);
}
