nis/nis_clone_res.c

   1 /* Copyright (c) 1997-2021 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <string.h>
  19 #include <rpc/rpc.h>
  20 #include <rpcsvc/nis.h>
  21 #include <shlib-compat.h>
  22
  23 #include "nis_xdr.h"
  24
  25 nis_result *
  26 nis_clone_result (const nis_result *src, nis_result *dest)
  27 {
  28   char *addr;
  29   unsigned int size;
  30   XDR xdrs;
  31
  32   if (src == NULL)
  33     return (NULL);
  34
  35   size = xdr_sizeof ((xdrproc_t)_xdr_nis_result, (char *)src);
  36   if ((addr = calloc(1, size)) == NULL)
  37     return NULL;
  38
  39   xdrmem_create (&xdrs, addr, size, XDR_ENCODE);
  40   if (!_xdr_nis_result (&xdrs, (nis_result *)src))
  41     {
  42       xdr_destroy (&xdrs);
  43       free (addr);
  44       return NULL;
  45     }
  46   xdr_destroy (&xdrs);
  47
  48   nis_result *res;
  49   if (dest == NULL)
  50     {
  51       if ((res = calloc (1, sizeof (nis_result))) == NULL)
  52         {
  53           free (addr);
  54           return NULL;
  55         }
  56     }
  57   else
  58     res = dest;
  59
  60   xdrmem_create (&xdrs, addr, size, XDR_DECODE);
  61   if (!_xdr_nis_result (&xdrs, res))
  62     {
  63       xdr_destroy (&xdrs);
  64       if (res != dest)
  65         free (res);
  66       free (addr);
  67       return NULL;
  68     }
  69   xdr_destroy (&xdrs);
  70   free (addr);
  71
  72   return res;
  73 }
  74 libnsl_hidden_nolink_def (nis_clone_result, GLIBC_2_1)