ypset.c revision 125613 
1/*
2 * Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote
14 *    products derived from this software without specific prior written
15 *    permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
18 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/usr.sbin/ypset/ypset.c 125613 2004-02-09 00:10:18Z iedowse $");
32
33#include <err.h>
34#include <netdb.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <string.h>
38#include <unistd.h>
39#include <sys/param.h>
40#include <sys/types.h>
41#include <sys/socket.h>
42#include <rpc/rpc.h>
43#include <rpc/xdr.h>
44#include <rpcsvc/yp.h>
45struct dom_binding{};
46#include <rpcsvc/ypclnt.h>
47#include <arpa/inet.h>
48
49extern bool_t xdr_domainname();
50
51static void
52usage(void)
53{
54	fprintf(stderr, "usage: ypset [-h host] [-d domain] server\n");
55	exit(1);
56}
57
58int
59bind_tohost(struct sockaddr_in *sin, char *dom, char *server)
60{
61	struct ypbind_setdom ypsd;
62	struct timeval tv;
63	struct hostent *hp;
64	CLIENT *client;
65	int sock, port;
66	int r;
67	unsigned long server_addr;
68
69	if ((port = htons(getrpcport(server, YPPROG, YPPROC_NULL, IPPROTO_UDP))) == 0)
70		errx(1, "%s not running ypserv", server);
71
72	bzero(&ypsd, sizeof ypsd);
73
74	if ((hp = gethostbyname (server)) != NULL) {
75		/* is this the most compatible way?? */
76		bcopy (hp->h_addr_list[0],
77		       (u_long *)&ypsd.ypsetdom_binding.ypbind_binding_addr,
78		       sizeof (unsigned long));
79	} else if ((long)(server_addr = inet_addr (server)) == -1) {
80		errx(1, "can't find address for %s", server);
81	} else
82		bcopy (&server_addr,
83		       (u_long *)&ypsd.ypsetdom_binding.ypbind_binding_addr,
84		       sizeof (server_addr));
85
86/*	strncpy(ypsd.ypsetdom_domain, dom, sizeof ypsd.ypsetdom_domain); */
87	ypsd.ypsetdom_domain = dom;
88	*(u_long *)&ypsd.ypsetdom_binding.ypbind_binding_port = port;
89	ypsd.ypsetdom_vers = YPVERS;
90
91	tv.tv_sec = 15;
92	tv.tv_usec = 0;
93	sock = RPC_ANYSOCK;
94	client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
95	if (client == NULL) {
96		warnx("can't yp_bind, reason: %s", yperr_string(YPERR_YPBIND));
97		return (YPERR_YPBIND);
98	}
99	client->cl_auth = authunix_create_default();
100
101	r = clnt_call(client, YPBINDPROC_SETDOM,
102		(xdrproc_t)xdr_ypbind_setdom, &ypsd,
103		(xdrproc_t)xdr_void, NULL, tv);
104	if (r) {
105		warnx("sorry, cannot ypset for domain %s on host", dom);
106		clnt_destroy(client);
107		return (YPERR_YPBIND);
108	}
109	clnt_destroy(client);
110	return (0);
111}
112
113int
114main(int argc, char *argv[])
115{
116	struct sockaddr_in sin;
117	struct hostent *hent;
118	char *domainname;
119	int c;
120
121	yp_get_default_domain(&domainname);
122
123	bzero(&sin, sizeof sin);
124	sin.sin_family = AF_INET;
125	sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
126
127	while ((c = getopt(argc, argv, "h:d:")) != -1)
128		switch (c) {
129		case 'd':
130			domainname = optarg;
131			break;
132		case 'h':
133			if ((sin.sin_addr.s_addr = inet_addr(optarg)) == -1) {
134				hent = gethostbyname(optarg);
135				if (hent == NULL)
136					errx(1, "host %s unknown", optarg);
137				bcopy(hent->h_addr_list[0], &sin.sin_addr,
138					sizeof sin.sin_addr);
139			}
140			break;
141		default:
142			usage();
143		}
144
145	if (optind + 1 != argc)
146		usage();
147
148	if (bind_tohost(&sin, domainname, argv[optind]))
149		exit(1);
150	exit(0);
151}
152