1 /* $NetBSD: yppoll.c,v 1.15 2011/08/30 17:06:22 plunky 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 /*
30 * Copyright (c) 1992, 1993 John Brezak
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. The name of the author may not be used to endorse or promote
42 * products derived from this software without specific prior written
43 * permission.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
46 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
47 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
49 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * SUCH DAMAGE.
56 */
57
58 #include <sys/cdefs.h>
59 #ifndef lint
60 __RCSID("$NetBSD: yppoll.c,v 1.15 2011/08/30 17:06:22 plunky Exp $");
61 #endif /* not lint */
62
63 #include <sys/param.h>
64 #include <sys/types.h>
65 #include <sys/socket.h>
66 #include <err.h>
67 #include <stdio.h>
68 #include <stdlib.h>
69 #include <time.h>
70 #include <netdb.h>
71 #include <unistd.h>
72 #include <string.h>
73 #include <netinet/in.h>
74 #include <arpa/inet.h>
75
76 #include <rpc/rpc.h>
77 #include <rpc/xdr.h>
78 #include <rpcsvc/yp_prot.h>
79 #include <rpcsvc/ypclnt.h>
80
81 static CLIENT *mkclient(struct sockaddr_in *, unsigned long, unsigned long,
82 int);
83 static int get_remote_info(const char *, const char *, const char *, int *,
84 char **, int);
85 static void usage(void) __attribute__((__noreturn__));
86
87 int
main(int argc,char * argv[])88 main(int argc, char *argv[])
89 {
90 char *domainname;
91 char *hostname = NULL;
92 char *inmap, *master;
93 int order;
94 int c, r, tcp = 0;
95
96 (void)yp_get_default_domain(&domainname);
97
98 while ((c = getopt(argc, argv, "Th:d:")) != -1) {
99 switch (c) {
100 case 'T':
101 tcp = 1;
102 break;
103 case 'd':
104 domainname = optarg;
105 break;
106
107 case 'h':
108 hostname = optarg;
109 break;
110
111 default:
112 usage();
113 /*NOTREACHED*/
114 }
115 }
116
117 if (domainname == NULL)
118 errx(1, "YP domain name not set");
119
120 argc -= optind;
121 argv += optind;
122
123 if (argc != 1)
124 usage();
125
126 inmap = argv[0];
127
128 if (hostname != NULL)
129 r = get_remote_info(domainname, inmap, hostname,
130 &order, &master, tcp);
131 else {
132 r = yp_order(domainname, inmap, &order);
133 if (r == 0)
134 r = yp_master(domainname, inmap, &master);
135 }
136
137 if (r != 0)
138 errx(1, "no such map %s. Reason: %s",
139 inmap, yperr_string(r));
140
141 (void)printf("Map %s has order number %d. %s", inmap, order,
142 ctime((void *)&order));
143 (void)printf("The master server is %s.\n", master);
144 return 0;
145 }
146
147 static CLIENT *
mkclient(struct sockaddr_in * sin,unsigned long prog,unsigned long vers,int tcp)148 mkclient(struct sockaddr_in *sin, unsigned long prog, unsigned long vers,
149 int tcp)
150 {
151 static struct timeval tv = { 10, 0 };
152 int fd = RPC_ANYSOCK;
153
154 if (tcp)
155 return clnttcp_create(sin, prog, vers, &fd, 0, 0);
156 else
157 return clntudp_create(sin, prog, vers, tv, &fd);
158 }
159
160 static int
get_remote_info(const char * indomain,const char * inmap,const char * server,int * outorder,char ** outname,int tcp)161 get_remote_info(const char *indomain, const char *inmap, const char *server,
162 int *outorder, char **outname, int tcp)
163 {
164 struct ypresp_order ypro;
165 struct ypresp_master yprm;
166 struct ypreq_nokey yprnk;
167 struct timeval tv;
168 int r;
169 struct sockaddr_in rsrv_sin;
170 CLIENT *client;
171 struct hostent *h;
172
173 (void)memset(&rsrv_sin, 0, sizeof(rsrv_sin));
174 rsrv_sin.sin_len = sizeof rsrv_sin;
175 rsrv_sin.sin_family = AF_INET;
176
177 h = gethostbyname(server);
178 if (h == NULL) {
179 if (inet_aton(server, &rsrv_sin.sin_addr) == 0)
180 errx(1, "unknown host %s", server);
181 } else
182 (void)memcpy(&rsrv_sin.sin_addr.s_addr, h->h_addr,
183 (size_t)h->h_length);
184
185 client = mkclient(&rsrv_sin, YPPROG, YPVERS, tcp);
186 if (client == NULL)
187 errx(1, "clnt%s_create: no contact with host %s.",
188 tcp ? "tcp" : "udp", server);
189
190 yprnk.domain = indomain;
191 yprnk.map = inmap;
192
193 (void)memset(&ypro, 0, sizeof(ypro));
194
195 tv.tv_sec = 10;
196 tv.tv_usec = 0;
197
198 r = clnt_call(client, (unsigned int)YPPROC_ORDER, xdr_ypreq_nokey,
199 &yprnk, xdr_ypresp_order, &ypro, tv);
200 if (r != RPC_SUCCESS)
201 clnt_perror(client, "yp_order: clnt_call");
202
203 *outorder = ypro.ordernum;
204 xdr_free((xdrproc_t)xdr_ypresp_order, (void *)&ypro);
205
206 r = ypprot_err(ypro.status);
207 if (r == RPC_SUCCESS) {
208 (void)memset(&yprm, 0, sizeof(yprm));
209
210 r = clnt_call(client, (unsigned int)YPPROC_MASTER,
211 xdr_ypreq_nokey, &yprnk, xdr_ypresp_master, &yprm, tv);
212 if (r != RPC_SUCCESS)
213 clnt_perror(client, "yp_master: clnt_call");
214 r = ypprot_err(yprm.status);
215 if (r == 0)
216 *outname = (char *)strdup(yprm.master);
217 xdr_free((xdrproc_t)xdr_ypresp_master, (void *)&yprm);
218 }
219 clnt_destroy(client);
220 return r;
221 }
222
223 static void
usage(void)224 usage(void)
225 {
226
227 (void)fprintf(stderr,
228 "Usage: %s [-T] [-h host] [-d domainname] mapname\n",
229 getprogname());
230 exit(1);
231 }
232