sunrpc/publickey.c

   1 /* Get public or secret key from key server.
   2    Copyright (C) 1996-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <rpc/netdb.h>
  21 #include <rpc/auth_des.h>
  22 #include <shlib-compat.h>
  23
  24 #include "nsswitch.h"
  25
  26
  27 /* Type of the lookup function for the public key.  */
  28 typedef int (*public_function) (const char *, char *, int *);
  29
  30 /* Type of the lookup function for the secret key.  */
  31 typedef int (*secret_function) (const char *, char *, const char *, int *);
  32
  33 int
  34 getpublickey (const char *name, char *key)
  35 {
  36   nss_action_list nip;
  37   union
  38   {
  39     public_function f;
  40     void *ptr;
  41   } fct;
  42   enum nss_status status = NSS_STATUS_UNAVAIL;
  43   int no_more;
  44
  45   no_more = __nss_publickey_lookup2 (&nip, "getpublickey", NULL, &fct.ptr);
  46
  47   while (! no_more)
  48     {
  49       status = (*fct.f) (name, key, &errno);
  50
  51       no_more = __nss_next2 (&nip, "getpublickey", NULL, &fct.ptr, status, 0);
  52     }
  53
  54   return status == NSS_STATUS_SUCCESS;
  55 }
  56 libc_hidden_nolink_sunrpc (getpublickey, GLIBC_2_0)
  57
  58
  59 int
  60 getsecretkey (const char *name, char *key, const char *passwd)
  61 {
  62   nss_action_list nip;
  63   union
  64   {
  65     secret_function f;
  66     void *ptr;
  67   } fct;
  68   enum nss_status status = NSS_STATUS_UNAVAIL;
  69   int no_more;
  70
  71   no_more = __nss_publickey_lookup2 (&nip, "getsecretkey", NULL, &fct.ptr);
  72
  73   while (! no_more)
  74     {
  75       status = (*fct.f) (name, key, passwd, &errno);
  76
  77       no_more = __nss_next2 (&nip, "getsecretkey", NULL, &fct.ptr, status, 0);
  78     }
  79
  80   return status == NSS_STATUS_SUCCESS;
  81 }
  82 libc_hidden_nolink_sunrpc (getsecretkey, GLIBC_2_0)