1/* Get public or secret key from key server.
2 Copyright (C) 1996-2020 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 <https://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
34int
35getpublickey (const char *name, char *key)
36{
37 static service_user *startp;
38 static public_function start_fct;
39 service_user *nip;
40 union
41 {
42 public_function f;
43 void *ptr;
44 } fct;
45 enum nss_status status = NSS_STATUS_UNAVAIL;
46 int no_more;
47
48 if (startp == NULL)
49 {
50 no_more = __nss_publickey_lookup2 (&nip, "getpublickey", NULL, &fct.ptr);
51 if (no_more)
52 startp = (service_user *) -1;
53 else
54 {
55 startp = nip;
56 start_fct = fct.f;
57 }
58 }
59 else
60 {
61 fct.f = start_fct;
62 no_more = (nip = startp) == (service_user *) -1;
63 }
64
65 while (! no_more)
66 {
67 status = (*fct.f) (name, key, &errno);
68
69 no_more = __nss_next2 (&nip, "getpublickey", NULL, &fct.ptr, status, 0);
70 }
71
72 return status == NSS_STATUS_SUCCESS;
73}
74libc_hidden_nolink_sunrpc (getpublickey, GLIBC_2_0)
75
76
77int
78getsecretkey (const char *name, char *key, const char *passwd)
79{
80 static service_user *startp;
81 static secret_function start_fct;
82 service_user *nip;
83 union
84 {
85 secret_function f;
86 void *ptr;
87 } fct;
88 enum nss_status status = NSS_STATUS_UNAVAIL;
89 int no_more;
90
91 if (startp == NULL)
92 {
93 no_more = __nss_publickey_lookup2 (&nip, "getsecretkey", NULL, &fct.ptr);
94 if (no_more)
95 startp = (service_user *) -1;
96 else
97 {
98 startp = nip;
99 start_fct = fct.f;
100 }
101 }
102 else
103 {
104 fct.f = start_fct;
105 no_more = (nip = startp) == (service_user *) -1;
106 }
107
108 while (! no_more)
109 {
110 status = (*fct.f) (name, key, passwd, &errno);
111
112 no_more = __nss_next2 (&nip, "getsecretkey", NULL, &fct.ptr, status, 0);
113 }
114
115 return status == NSS_STATUS_SUCCESS;
116}
117libc_hidden_nolink_sunrpc (getsecretkey, GLIBC_2_0)
118