1/* Get public or secret key from key server.
2 Copyright (C) 1996-2017 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
19
20#include <errno.h>
21#include <rpc/netdb.h>
22#include <rpc/auth_des.h>
23#include <shlib-compat.h>
24
25#include "nsswitch.h"
26
27
28/* Type of the lookup function for the public key. */
29typedef int (*public_function) (const char *, char *, int *);
30
31/* Type of the lookup function for the secret key. */
32typedef int (*secret_function) (const char *, char *, const char *, int *);
33
34/* The lookup function for the first entry of this service. */
35extern int __nss_publickey_lookup (service_user **nip, const char *name,
36 void **fctp) internal_function;
37
38
39int
40getpublickey (const char *name, char *key)
41{
42 static service_user *startp;
43 static public_function start_fct;
44 service_user *nip;
45 union
46 {
47 public_function f;
48 void *ptr;
49 } fct;
50 enum nss_status status = NSS_STATUS_UNAVAIL;
51 int no_more;
52
53 if (startp == NULL)
54 {
55 no_more = __nss_publickey_lookup (&nip, "getpublickey", &fct.ptr);
56 if (no_more)
57 startp = (service_user *) -1;
58 else
59 {
60 startp = nip;
61 start_fct = fct.f;
62 }
63 }
64 else
65 {
66 fct.f = start_fct;
67 no_more = (nip = startp) == (service_user *) -1;
68 }
69
70 while (! no_more)
71 {
72 status = (*fct.f) (name, key, &errno);
73
74 no_more = __nss_next2 (&nip, "getpublickey", NULL, &fct.ptr, status, 0);
75 }
76
77 return status == NSS_STATUS_SUCCESS;
78}
79libc_hidden_nolink_sunrpc (getpublickey, GLIBC_2_0)
80
81
82int
83getsecretkey (const char *name, char *key, const char *passwd)
84{
85 static service_user *startp;
86 static secret_function start_fct;
87 service_user *nip;
88 union
89 {
90 secret_function f;
91 void *ptr;
92 } fct;
93 enum nss_status status = NSS_STATUS_UNAVAIL;
94 int no_more;
95
96 if (startp == NULL)
97 {
98 no_more = __nss_publickey_lookup (&nip, "getsecretkey", &fct.ptr);
99 if (no_more)
100 startp = (service_user *) -1;
101 else
102 {
103 startp = nip;
104 start_fct = fct.f;
105 }
106 }
107 else
108 {
109 fct.f = start_fct;
110 no_more = (nip = startp) == (service_user *) -1;
111 }
112
113 while (! no_more)
114 {
115 status = (*fct.f) (name, key, passwd, &errno);
116
117 no_more = __nss_next2 (&nip, "getsecretkey", NULL, &fct.ptr, status, 0);
118 }
119
120 return status == NSS_STATUS_SUCCESS;
121}
122libc_hidden_nolink_sunrpc (getsecretkey, GLIBC_2_0)
123