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. */ |
29 | typedef int (*public_function) (const char *, char *, int *); |
30 | |
31 | /* Type of the lookup function for the secret key. */ |
32 | typedef int (*secret_function) (const char *, char *, const char *, int *); |
33 | |
34 | /* The lookup function for the first entry of this service. */ |
35 | extern int __nss_publickey_lookup (service_user **nip, const char *name, |
36 | void **fctp) internal_function; |
37 | |
38 | |
39 | int |
40 | getpublickey (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 | } |
79 | libc_hidden_nolink_sunrpc (getpublickey, GLIBC_2_0) |
80 | |
81 | |
82 | int |
83 | getsecretkey (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 | } |
122 | libc_hidden_nolink_sunrpc (getsecretkey, GLIBC_2_0) |
123 | |