/* Convert a struct netent object to a string.

   Copyright (C) 2016-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <support/format_nss.h>

#include <arpa/inet.h>

#include <stdio.h>

#include <stdlib.h>

#include <support/support.h>

#include <support/xmemstream.h>

char *

support_format_netent (struct netent *e)

{

  if (e == NULL)

    {

      char *value = support_format_herrno (h_errno);

      char *result = xasprintf ("error: %s\n", value);

      free (value);

      return result;

    }

  struct xmemstream mem;

  xopen_memstream (&mem;;

  if (e->n_name != NULL)

    fprintf (mem.out, "name: %s\n", e->n_name);

  for (char **ap = e->n_aliases; *ap != NULL; ++ap)

    fprintf (mem.out, "alias: %s\n", *ap);

  if (e->n_addrtype != AF_INET)

    fprintf (mem.out, "addrtype: %d\n", e->n_addrtype);

  /* On alpha, e->n_net is an unsigned long.  */

  unsigned int n_net = e->n_net;

  fprintf (mem.out, "net: 0x%08x\n", n_net);

  xfclose_memstream (&mem;;

  return mem.buffer;

}