sunrpc/publickey.c

   1 /* Get public or secret key from key server.
   2    Copyright (C) 1996-2021 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.  */
  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 int
  35 getpublickey (const char *name, char *key)
  36 {
  37   nss_action_list nip;
  38   union
  39   {
  40     public_function f;
  41     void *ptr;
  42   } fct;
  43   enum nss_status status = NSS_STATUS_UNAVAIL;
  44   int no_more;
  45
  46   no_more = __nss_publickey_lookup2 (&nip, "getpublickey", NULL, &fct.ptr);
  47
  48   while (! no_more)
  49     {
  50       status = (*fct.f) (name, key, &errno);
  51
  52       no_more = __nss_next2 (&nip, "getpublickey", NULL, &fct.ptr, status, 0);
  53     }
  54
  55   return status == NSS_STATUS_SUCCESS;
  56 }
  57 libc_hidden_nolink_sunrpc (getpublickey, GLIBC_2_0)
  58
  59
  60 int
  61 getsecretkey (const char *name, char *key, const char *passwd)
  62 {
  63   nss_action_list nip;
  64   union
  65   {
  66     secret_function f;
  67     void *ptr;
  68   } fct;
  69   enum nss_status status = NSS_STATUS_UNAVAIL;
  70   int no_more;
  71
  72   no_more = __nss_publickey_lookup2 (&nip, "getsecretkey", NULL, &fct.ptr);
  73
  74   while (! no_more)
  75     {
  76       status = (*fct.f) (name, key, passwd, &errno);
  77
  78       no_more = __nss_next2 (&nip, "getsecretkey", NULL, &fct.ptr, status, 0);
  79     }
  80
  81   return status == NSS_STATUS_SUCCESS;
  82 }
  83 libc_hidden_nolink_sunrpc (getsecretkey, GLIBC_2_0)