xref: /freebsd/usr.sbin/ypset/ypset.c (revision 1de7b4b805ddbf2429da511c053686ac4591ed89)
1e5763f00SMarcelo Araujo /*	$OpenBSD: ypset.c,v 1.20 2015/01/16 06:40:23 deraadt Exp $ */
2e5763f00SMarcelo Araujo /*	$NetBSD: ypset.c,v 1.8 1996/05/13 02:46:33 thorpej Exp $	*/
3e5763f00SMarcelo Araujo 
4*1de7b4b8SPedro F. Giffuni /*-
5*1de7b4b8SPedro F. Giffuni  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6*1de7b4b8SPedro F. Giffuni  *
7e5763f00SMarcelo Araujo  * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com>
8d832d691SGarrett Wollman  * All rights reserved.
9d832d691SGarrett Wollman  *
10d832d691SGarrett Wollman  * Redistribution and use in source and binary forms, with or without
11d832d691SGarrett Wollman  * modification, are permitted provided that the following conditions
12d832d691SGarrett Wollman  * are met:
13d832d691SGarrett Wollman  * 1. Redistributions of source code must retain the above copyright
14d832d691SGarrett Wollman  *    notice, this list of conditions and the following disclaimer.
15d832d691SGarrett Wollman  * 2. Redistributions in binary form must reproduce the above copyright
16d832d691SGarrett Wollman  *    notice, this list of conditions and the following disclaimer in the
17d832d691SGarrett Wollman  *    documentation and/or other materials provided with the distribution.
18d832d691SGarrett Wollman  *
19d832d691SGarrett Wollman  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
20d832d691SGarrett Wollman  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21d832d691SGarrett Wollman  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22d832d691SGarrett Wollman  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
23d832d691SGarrett Wollman  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24d832d691SGarrett Wollman  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25d832d691SGarrett Wollman  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26d832d691SGarrett Wollman  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27d832d691SGarrett Wollman  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28d832d691SGarrett Wollman  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29d832d691SGarrett Wollman  * SUCH DAMAGE.
30d832d691SGarrett Wollman  */
31d832d691SGarrett Wollman 
32b728350eSDavid E. O'Brien #include <sys/cdefs.h>
33b728350eSDavid E. O'Brien __FBSDID("$FreeBSD$");
34d832d691SGarrett Wollman 
35e5763f00SMarcelo Araujo #include <sys/param.h>
36e5763f00SMarcelo Araujo #include <sys/types.h>
37e5763f00SMarcelo Araujo #include <sys/socket.h>
38e5763f00SMarcelo Araujo 
390da8bf4aSPhilippe Charnier #include <err.h>
400da8bf4aSPhilippe Charnier #include <netdb.h>
410da8bf4aSPhilippe Charnier #include <stdio.h>
428aacd912SWarner Losh #include <stdlib.h>
430da8bf4aSPhilippe Charnier #include <string.h>
440da8bf4aSPhilippe Charnier #include <unistd.h>
45e5763f00SMarcelo Araujo 
46d832d691SGarrett Wollman #include <rpc/rpc.h>
47d832d691SGarrett Wollman #include <rpc/xdr.h>
487db881e1SBill Paul #include <rpcsvc/yp.h>
49d832d691SGarrett Wollman #include <rpcsvc/ypclnt.h>
50d832d691SGarrett Wollman #include <arpa/inet.h>
51d832d691SGarrett Wollman 
520da8bf4aSPhilippe Charnier static void
53dc584ddbSDag-Erling Smørgrav usage(void)
54d832d691SGarrett Wollman {
55e5763f00SMarcelo Araujo 	fprintf(stderr, "usage: ypset [-d domain] [-h host] server\n");
56d832d691SGarrett Wollman 	exit(1);
57d832d691SGarrett Wollman }
58d832d691SGarrett Wollman 
59e5763f00SMarcelo Araujo static int
60dc584ddbSDag-Erling Smørgrav bind_tohost(struct sockaddr_in *sin, char *dom, char *server)
61d832d691SGarrett Wollman {
62d832d691SGarrett Wollman 	struct ypbind_setdom ypsd;
63e5763f00SMarcelo Araujo 	struct in_addr iaddr;
64d832d691SGarrett Wollman 	struct hostent *hp;
65e5763f00SMarcelo Araujo 	struct timeval tv;
66d832d691SGarrett Wollman 	CLIENT *client;
67e5763f00SMarcelo Araujo 	int sock, port, r;
68d832d691SGarrett Wollman 
69e5763f00SMarcelo Araujo 	port = getrpcport(server, YPPROG, YPPROC_NULL, IPPROTO_UDP);
70e5763f00SMarcelo Araujo 	if (port == 0)
710da8bf4aSPhilippe Charnier 		errx(1, "%s not running ypserv", server);
72e5763f00SMarcelo Araujo 	port = htons(port);
73d832d691SGarrett Wollman 
74e5763f00SMarcelo Araujo 	memset(&ypsd, 0, sizeof ypsd);
75d832d691SGarrett Wollman 
76e5763f00SMarcelo Araujo 	if (inet_aton(server, &iaddr) == 0) {
77e5763f00SMarcelo Araujo 		hp = gethostbyname(server);
78e5763f00SMarcelo Araujo 		if (hp == NULL)
790da8bf4aSPhilippe Charnier 			errx(1, "can't find address for %s", server);
80e5763f00SMarcelo Araujo 		memmove(&iaddr.s_addr, hp->h_addr, sizeof(iaddr.s_addr));
81e5763f00SMarcelo Araujo 	}
827db881e1SBill Paul 	ypsd.ypsetdom_domain = dom;
83e5763f00SMarcelo Araujo 	bcopy(&iaddr.s_addr, &ypsd.ypsetdom_binding.ypbind_binding_addr,
84e5763f00SMarcelo Araujo 	    sizeof(ypsd.ypsetdom_binding.ypbind_binding_addr));
85e5763f00SMarcelo Araujo 	bcopy(&port, &ypsd.ypsetdom_binding.ypbind_binding_port,
86e5763f00SMarcelo Araujo 	    sizeof(ypsd.ypsetdom_binding.ypbind_binding_port));
87d832d691SGarrett Wollman 	ypsd.ypsetdom_vers = YPVERS;
88d832d691SGarrett Wollman 
89d832d691SGarrett Wollman 	tv.tv_sec = 15;
90d832d691SGarrett Wollman 	tv.tv_usec = 0;
91d832d691SGarrett Wollman 	sock = RPC_ANYSOCK;
92d832d691SGarrett Wollman 	client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
93d832d691SGarrett Wollman 	if (client == NULL) {
940da8bf4aSPhilippe Charnier 		warnx("can't yp_bind, reason: %s", yperr_string(YPERR_YPBIND));
95ed4d1c46SDag-Erling Smørgrav 		return (YPERR_YPBIND);
96d832d691SGarrett Wollman 	}
97d832d691SGarrett Wollman 	client->cl_auth = authunix_create_default();
98d832d691SGarrett Wollman 
99d832d691SGarrett Wollman 	r = clnt_call(client, YPBINDPROC_SETDOM,
100f249dbccSDag-Erling Smørgrav 		(xdrproc_t)xdr_ypbind_setdom, &ypsd,
101f249dbccSDag-Erling Smørgrav 		(xdrproc_t)xdr_void, NULL, tv);
102d832d691SGarrett Wollman 	if (r) {
103e5763f00SMarcelo Araujo 		warnx("cannot ypset for domain %s on host %s: %s"
104e5763f00SMarcelo Araujo                 " - make sure ypbind was started with -ypset or -ypsetme", dom,
105e5763f00SMarcelo Araujo 		    server, clnt_sperrno(r));
106d832d691SGarrett Wollman 		clnt_destroy(client);
107ed4d1c46SDag-Erling Smørgrav 		return (YPERR_YPBIND);
108d832d691SGarrett Wollman 	}
109d832d691SGarrett Wollman 	clnt_destroy(client);
110ed4d1c46SDag-Erling Smørgrav 	return (0);
111d832d691SGarrett Wollman }
112d832d691SGarrett Wollman 
113d832d691SGarrett Wollman int
114dc584ddbSDag-Erling Smørgrav main(int argc, char *argv[])
115d832d691SGarrett Wollman {
116d832d691SGarrett Wollman 	struct sockaddr_in sin;
117d832d691SGarrett Wollman 	struct hostent *hent;
118d832d691SGarrett Wollman 	char *domainname;
119d832d691SGarrett Wollman 	int c;
120d832d691SGarrett Wollman 
121d832d691SGarrett Wollman 	yp_get_default_domain(&domainname);
122d832d691SGarrett Wollman 
123d832d691SGarrett Wollman 	bzero(&sin, sizeof sin);
124d832d691SGarrett Wollman 	sin.sin_family = AF_INET;
125e8f6dea1SAlfred Perlstein 	sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
126d832d691SGarrett Wollman 
127d832d691SGarrett Wollman 	while ((c = getopt(argc, argv, "h:d:")) != -1)
128d832d691SGarrett Wollman 		switch (c) {
129d832d691SGarrett Wollman 		case 'd':
130d832d691SGarrett Wollman 			domainname = optarg;
131d832d691SGarrett Wollman 			break;
132d832d691SGarrett Wollman 		case 'h':
133e5763f00SMarcelo Araujo 			if (inet_aton(optarg, &sin.sin_addr) == 0) {
134d832d691SGarrett Wollman 				hent = gethostbyname(optarg);
1350da8bf4aSPhilippe Charnier 				if (hent == NULL)
136e5763f00SMarcelo Araujo 					errx(1, "host %s unknown\n", optarg);
137e5763f00SMarcelo Araujo 				bcopy(hent->h_addr, &sin.sin_addr,
138e5763f00SMarcelo Araujo 				    sizeof(sin.sin_addr));
139d832d691SGarrett Wollman 			}
140d832d691SGarrett Wollman 			break;
141d832d691SGarrett Wollman 		default:
142d832d691SGarrett Wollman 			usage();
143d832d691SGarrett Wollman 		}
144d832d691SGarrett Wollman 
145d832d691SGarrett Wollman 	if (optind + 1 != argc)
146d832d691SGarrett Wollman 		usage();
147d832d691SGarrett Wollman 
148d832d691SGarrett Wollman 	if (bind_tohost(&sin, domainname, argv[optind]))
149d832d691SGarrett Wollman 		exit(1);
150d832d691SGarrett Wollman 	exit(0);
151d832d691SGarrett Wollman }
152