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