1 /* $NetBSD: ypset.c,v 1.17 2011/08/27 22:41:35 joerg Exp $ */
2
3 /*
4 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@fsa.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 #ifndef lint
31 __RCSID("$NetBSD: ypset.c,v 1.17 2011/08/27 22:41:35 joerg Exp $");
32 #endif
33
34 #include <sys/param.h>
35 #include <sys/types.h>
36 #include <sys/socket.h>
37 #include <stdio.h>
38 #include <string.h>
39 #include <stdlib.h>
40 #include <unistd.h>
41 #include <err.h>
42 #include <netdb.h>
43
44 #include <rpc/rpc.h>
45 #include <rpc/xdr.h>
46 #include <rpcsvc/yp_prot.h>
47 #include <rpcsvc/ypclnt.h>
48 #include <arpa/inet.h>
49
50 __dead static void usage(void);
51 static void gethostaddr(const char *, struct in_addr *);
52 static int bind_tohost(struct sockaddr_in *, char *, char *);
53
54 int
main(int argc,char * argv[])55 main(int argc, char *argv[])
56 {
57 struct sockaddr_in sin;
58 char *domainname;
59 int c;
60
61 yp_get_default_domain(&domainname);
62
63 (void) memset(&sin, 0, sizeof sin);
64 sin.sin_family = AF_INET;
65 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
66
67 while ((c = getopt(argc, argv, "h:d:")) != -1) {
68 switch(c) {
69 case 'd':
70 domainname = optarg;
71 break;
72
73 case 'h':
74 gethostaddr(optarg, &sin.sin_addr);
75 break;
76
77 default:
78 usage();
79 }
80 }
81
82 if (domainname == NULL)
83 errx(1, "YP domain name not set");
84
85 argc -= optind;
86 argv += optind;
87
88 if (argc != 1)
89 usage();
90
91 return bind_tohost(&sin, domainname, argv[0]) != 0;
92 }
93
94 static void
gethostaddr(const char * host,struct in_addr * ia)95 gethostaddr(const char *host, struct in_addr *ia)
96 {
97 struct hostent *hp;
98
99 if (inet_aton(host, ia) != 0)
100 return;
101
102 hp = gethostbyname(host);
103 if (hp == NULL)
104 errx(1, "Cannot get host address for %s: %s", host,
105 hstrerror(h_errno));
106 (void) memcpy(ia, hp->h_addr, sizeof(*ia));
107 }
108
109 static int
bind_tohost(struct sockaddr_in * sin,char * dom,char * server)110 bind_tohost(struct sockaddr_in *sin, char *dom, char *server)
111 {
112 struct ypbind_setdom ypsd;
113 struct timeval tv;
114 CLIENT *client;
115 int sock, port;
116 int r;
117
118 port = htons(getrpcport(server, YPPROG, YPPROC_NULL, IPPROTO_UDP));
119 if (port == 0)
120 errx(1, "%s not running ypserv.", server);
121
122 (void) memset(&ypsd, 0, sizeof ypsd);
123
124 gethostaddr(server, &ypsd.ypsetdom_addr);
125
126 (void) strlcpy(ypsd.ypsetdom_domain, dom, sizeof ypsd.ypsetdom_domain);
127 ypsd.ypsetdom_port = port;
128 ypsd.ypsetdom_vers = YPVERS;
129
130 tv.tv_sec = 15;
131 tv.tv_usec = 0;
132 sock = RPC_ANYSOCK;
133
134 client = clntudp_create(sin, YPBINDPROG, YPBINDVERS, tv, &sock);
135 if (client == NULL) {
136 warnx("Can't yp_bind: Reason: %s", yperr_string(YPERR_YPBIND));
137 return YPERR_YPBIND;
138 }
139 client->cl_auth = authunix_create_default();
140
141 r = clnt_call(client, YPBINDPROC_SETDOM,
142 xdr_ypbind_setdom, &ypsd, xdr_void, NULL, tv);
143 if (r) {
144 warnx("Cannot ypset for domain %s on host %s: %s.",
145 dom, server, clnt_sperrno(r));
146 clnt_destroy(client);
147 return YPERR_YPBIND;
148 }
149 clnt_destroy(client);
150 return 0;
151 }
152
153 static void
usage(void)154 usage(void)
155 {
156 (void) fprintf(stderr, "usage: %s [-h host ] [-d domain] server\n",
157 getprogname());
158 exit(1);
159 }
160