1/*	$OpenBSD: yppoll.c,v 1.15 2015/01/16 06:40:22 deraadt Exp $ */
2/*	$NetBSD: yppoll.c,v 1.5 1996/05/13 02:46:36 thorpej Exp $	*/
3
4/*
5 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@openbsd.org>
6 * Copyright (c) 1992, 1993 John Brezak
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. The name of the author may not be used to endorse or promote
18 *    products derived from this software without specific prior written
19 *    permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <sys/types.h>
35#include <sys/socket.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <time.h>
39#include <netdb.h>
40#include <unistd.h>
41#include <string.h>
42#include <netinet/in.h>
43#include <arpa/inet.h>
44
45#include <rpc/rpc.h>
46#include <rpc/xdr.h>
47#include <rpcsvc/yp_prot.h>
48#include <rpcsvc/ypclnt.h>
49
50static void
51usage(void)
52{
53	fprintf(stderr, "usage: yppoll [-d domain] [-h host] mapname\n");
54	exit(1);
55}
56
57static int
58get_remote_info(char *indomain, char *inmap, char *server, int *outorder,
59    char **outname)
60{
61	struct ypresp_order ypro;
62	struct ypresp_master yprm;
63	struct ypreq_nokey yprnk;
64	struct timeval tv;
65	struct sockaddr_in rsrv_sin;
66	int rsrv_sock;
67	CLIENT *client;
68	struct hostent *h;
69	int r;
70
71	bzero((char *)&rsrv_sin, sizeof rsrv_sin);
72	rsrv_sin.sin_len = sizeof rsrv_sin;
73	rsrv_sin.sin_family = AF_INET;
74	rsrv_sock = RPC_ANYSOCK;
75
76	h = gethostbyname(server);
77	if (h == NULL) {
78		if (inet_aton(server, &rsrv_sin.sin_addr) == 0) {
79			fprintf(stderr, "unknown host %s\n", server);
80			exit(1);
81		}
82	} else
83		rsrv_sin.sin_addr.s_addr = *(u_int32_t *)h->h_addr;
84
85	tv.tv_sec = 10;
86	tv.tv_usec = 0;
87
88	client = clntudp_create(&rsrv_sin, YPPROG, YPVERS, tv, &rsrv_sock);
89	if (client == NULL) {
90		fprintf(stderr, "clntudp_create: no contact with host %s.\n",
91		    server);
92		exit(1);
93	}
94
95	yprnk.domain = indomain;
96	yprnk.map = inmap;
97
98	bzero((char *)(char *)&ypro, sizeof ypro);
99
100	r = clnt_call(client, YPPROC_ORDER, xdr_ypreq_nokey, &yprnk,
101	    xdr_ypresp_order, &ypro, tv);
102	if (r != RPC_SUCCESS)
103		clnt_perror(client, "yp_order: clnt_call");
104
105	*outorder = ypro.ordernum;
106	xdr_free(xdr_ypresp_order, (char *)&ypro);
107
108	r = ypprot_err(ypro.status);
109	if (r == RPC_SUCCESS) {
110		bzero((char *)&yprm, sizeof yprm);
111
112		r = clnt_call(client, YPPROC_MASTER, xdr_ypreq_nokey,
113		    &yprnk, xdr_ypresp_master, &yprm, tv);
114		if (r != RPC_SUCCESS)
115			clnt_perror(client, "yp_master: clnt_call");
116		r = ypprot_err(yprm.status);
117		if (r==0)
118			*outname = (char *)strdup(yprm.master);
119		xdr_free(xdr_ypresp_master, (char *)&yprm);
120	}
121	clnt_destroy(client);
122	return r;
123}
124
125int
126main(int argc, char *argv[])
127{
128	char *domainname, *hostname = NULL, *inmap, *master;
129	extern char *optarg;
130	extern int optind;
131	int order, c, r;
132	time_t torder;
133
134	yp_get_default_domain(&domainname);
135
136	while ((c=getopt(argc, argv, "h:d:")) != -1)
137		switch (c) {
138		case 'd':
139			domainname = optarg;
140			break;
141		case 'h':
142			hostname = optarg;
143			break;
144		default:
145			usage();
146			/*NOTREACHED*/
147		}
148
149	if (optind + 1 != argc )
150		usage();
151	inmap = argv[optind];
152
153	if (hostname != NULL) {
154		r = get_remote_info(domainname, inmap, hostname,
155		    &order, &master);
156	} else {
157		r = yp_order(domainname, inmap, &order);
158		if (r == 0)
159			r = yp_master(domainname, inmap, &master);
160	}
161
162	if (r != 0) {
163		fprintf(stderr, "No such map %s. Reason: %s\n",
164		    inmap, yperr_string(r));
165		exit(1);
166	}
167
168	torder = order;
169	printf("Map %s has order number %lld. %s", inmap,
170	    (long long)order, ctime(&torder));
171	printf("The master server is %s.\n", master);
172	exit(0);
173}
174