sunrpc/publickey.c

   1 /* Get public or secret key from key server.
   2    Copyright (C) 1996 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 Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    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    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include <rpc/netdb.h>
  22
  23 #include "nsswitch.h"
  24
  25
  26 /* Type of the lookup function for the public key.  */
  27 typedef int (*public_function) (const char *, char *);
  28
  29 /* Type of the lookup function for the secret key.  */
  30 typedef int (*secret_function) (const char *, char *, const char *);
  31
  32 /* The lookup function for the first entry of this service.  */
  33 extern int __nss_publickey_lookup (service_user **nip, const char *name,
  34                                    void **fctp);
  35
  36
  37 int
  38 getpublickey (const char *name, char *key)
  39 {
  40   static service_user *startp = NULL;
  41   static public_function start_fct;
  42   service_user *nip;
  43   public_function fct;
  44   enum nss_status status = NSS_STATUS_UNAVAIL;
  45   int no_more;
  46
  47   if (startp == NULL)
  48     {
  49       no_more = __nss_publickey_lookup (&nip, "getpublickey", (void **) &fct);
  50       if (no_more)
  51         startp = (service_user *) -1;
  52       else
  53         {
  54           startp = nip;
  55           start_fct = fct;
  56         }
  57     }
  58   else
  59     {
  60       fct = start_fct;
  61       no_more = (nip = startp) == (service_user *) -1;
  62     }
  63
  64   while (! no_more)
  65     {
  66       status = (*fct) (name, key);
  67
  68       no_more = __nss_next (&nip, "getpublickey", (void **) &fct, status, 0);
  69     }
  70
  71   return status == NSS_STATUS_SUCCESS;
  72 }
  73
  74
  75 int
  76 getsecretkey (const char *name, char *key, const char *passwd)
  77 {
  78   static service_user *startp = NULL;
  79   static secret_function start_fct;
  80   service_user *nip;
  81   secret_function fct;
  82   enum nss_status status = NSS_STATUS_UNAVAIL;
  83   int no_more;
  84
  85   if (startp == NULL)
  86     {
  87       no_more = __nss_publickey_lookup (&nip, "getsecretkey", (void **) &fct);
  88       if (no_more)
  89         startp = (service_user *) -1;
  90       else
  91         {
  92           startp = nip;
  93           start_fct = fct;
  94         }
  95     }
  96   else
  97     {
  98       fct = start_fct;
  99       no_more = (nip = startp) == (service_user *) -1;
 100     }
 101
 102   while (! no_more)
 103     {
 104       status = (*fct) (name, key, passwd);
 105
 106       no_more = __nss_next (&nip, "getsecretkey", (void **) &fct, status, 0);
 107     }
 108
 109   return status == NSS_STATUS_SUCCESS;
 110 }