nis/nis_clone_res.c

   1 /* Copyright (c) 1997, 1998, 2005 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
   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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <string.h>
  21 #include <rpc/rpc.h>
  22 #include <rpcsvc/nis.h>
  23
  24 #include "nis_xdr.h"
  25
  26 nis_result *
  27 nis_clone_result (const nis_result *src, nis_result *dest)
  28 {
  29   char *addr;
  30   unsigned int size;
  31   XDR xdrs;
  32   nis_result *res;
  33
  34   if (src == NULL)
  35     return (NULL);
  36
  37   size = xdr_sizeof ((xdrproc_t)_xdr_nis_result, (char *)src);
  38   if ((addr = calloc(1, size)) == NULL)
  39     return NULL;
  40
  41   if (dest == NULL)
  42     {
  43       if ((res = calloc (1, sizeof (nis_result))) == NULL)
  44         {
  45           free (addr);
  46           return NULL;
  47         }
  48     }
  49   else
  50     res = dest;
  51
  52   xdrmem_create(&xdrs, addr, size, XDR_ENCODE);
  53   if (!_xdr_nis_result (&xdrs, (nis_result *)src))
  54     {
  55       xdr_destroy (&xdrs);
  56       free (addr);
  57       return NULL;
  58     }
  59   xdr_destroy (&xdrs);
  60   xdrmem_create(&xdrs, addr, size, XDR_DECODE);
  61   if (!_xdr_nis_result(&xdrs, res))
  62     {
  63       xdr_destroy (&xdrs);
  64       free (addr);
  65       return NULL;
  66     }
  67   xdr_destroy (&xdrs);
  68   free (addr);
  69
  70   return res;
  71 }