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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/* Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <string.h>
#include <rpc/rpc.h>
#include <rpc/auth.h>
#include <rpcsvc/nis.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "nis_intern.h"
static struct timeval TIMEOUT = {25, 0};
static int const MAXTRIES = 3;
static unsigned long
inetstr2int (const char *str)
{
char buffer[strlen (str) + 3];
size_t buflen;
size_t i, j;
buflen = stpcpy (buffer, str) - buffer;
j = 0;
for (i = 0; i < buflen; ++i)
if (buffer[i] == '.')
{
++j;
if (j == 4)
{
buffer[i] = '\0';
break;
}
}
return inet_addr (buffer);
}
static CLIENT *
__nis_dobind (const nis_server *server, u_long flags)
{
struct sockaddr_in clnt_saddr;
int clnt_sock;
size_t i;
CLIENT *client = NULL;
/* XXX What is this variable for? */
void *out = NULL;
for (i = 0; i < server->ep.ep_len; i++)
{
memset (&clnt_saddr, '\0', sizeof clnt_saddr);
clnt_saddr.sin_family = AF_INET;
if (strcmp (server->ep.ep_val[i].family,"loopback") == 0)
{
if (server->ep.ep_val[i].uaddr[i] == '-')
clnt_saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
else
if (strcmp (server->ep.ep_val[i].proto,"udp") == 0)
{
if ((flags & USE_DGRAM) == USE_DGRAM)
clnt_saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
else
continue;
}
else
if (strcmp (server->ep.ep_val[i].proto,"tcp") == 0)
{
if ((flags & USE_DGRAM) == USE_DGRAM)
continue;
else
clnt_saddr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
}
}
else
if (strcmp (server->ep.ep_val[i].family,"inet") == 0)
{
if (server->ep.ep_val[i].uaddr[i] == '-')
clnt_saddr.sin_addr.s_addr =
inetstr2int (server->ep.ep_val[i].uaddr);
else
if (strcmp (server->ep.ep_val[i].proto,"udp") == 0)
{
if ((flags & USE_DGRAM) == USE_DGRAM)
clnt_saddr.sin_addr.s_addr =
inetstr2int (server->ep.ep_val[i].uaddr);
else
continue;
}
else
if (strcmp (server->ep.ep_val[i].proto,"tcp") == 0)
{
if ((flags & USE_DGRAM) == USE_DGRAM)
continue;
else
clnt_saddr.sin_addr.s_addr =
inetstr2int (server->ep.ep_val[i].uaddr);
}
}
else
continue;
clnt_sock = RPC_ANYSOCK;
if ((flags & USE_DGRAM) == USE_DGRAM)
client = clntudp_create (&clnt_saddr, NIS_PROG, NIS_VERSION,
TIMEOUT, &clnt_sock);
else
client = clnttcp_create (&clnt_saddr, NIS_PROG, NIS_VERSION,
&clnt_sock, 0, 0);
if (client == NULL)
continue;
#if 1
if (clnt_call (client, 0, (xdrproc_t) xdr_void, NULL,
(xdrproc_t) xdr_void, out, TIMEOUT) != RPC_SUCCESS)
{
clnt_destroy (client);
continue;
}
#endif
if ((flags & NO_AUTHINFO) != NO_AUTHINFO)
{
#if !defined(NO_DES_RPC)
if (server->key_type == NIS_PK_DH)
{
char netname[MAXNETNAMELEN+1];
char *p;
strcpy (netname, "unix.");
strncat (netname, server->name,MAXNETNAMELEN-5);
netname[MAXNETNAMELEN-5] = '\0';
p = strchr (netname, '.');
*p = '@';
client->cl_auth =
authdes_pk_create (netname, &server->pkey, 300, NULL, NULL);
if (!client->cl_auth)
client->cl_auth = authunix_create_default ();
}
else
#endif
client->cl_auth = authunix_create_default ();
}
return client;
}
return NULL;
}
nis_error
__do_niscall (const nis_server *serv, int serv_len, u_long prog,
xdrproc_t xargs, caddr_t req, xdrproc_t xres, caddr_t resp,
u_long flags)
{
CLIENT *clnt;
directory_obj *dir = NULL;
const nis_server *server;
int try, result, server_len;
if (serv == NULL || serv_len == 0)
{
dir = readColdStartFile ();
if (dir == NULL)
return NIS_UNAVAIL;
server = dir->do_servers.do_servers_val;
server_len = dir->do_servers.do_servers_len;
}
else
{
server = serv;
server_len = serv_len;
}
try = 0;
result = NIS_NAMEUNREACHABLE;
while (try < MAXTRIES && result != RPC_SUCCESS)
{
unsigned int i;
++try;
for (i = 0; i < server_len; i++)
{
if ((clnt = __nis_dobind (&server[i], flags)) == NULL)
continue;
result = clnt_call (clnt, prog, xargs, req, xres, resp, TIMEOUT);
if (result != RPC_SUCCESS)
{
/* XXX Grrr. The cast is needed for now since Sun code does
note know about `const'. */
clnt_perror (clnt, (char *) "do_niscall: clnt_call");
clnt_destroy (clnt);
result = NIS_RPCERROR;
}
else
clnt_destroy (clnt);
}
}
if (dir != NULL)
nis_free_directory (dir);
return result;
}
|
