/* Copyright (c) 1997-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.

   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 <errno.h>

#include <string.h>

#include <rpcsvc/nis.h>

#include <shlib-compat.h>

nis_name

nis_domain_of_r (const_nis_name name, char *buffer, size_t buflen)

{

  char *cptr;

  size_t cptr_len;

  if (buffer == NULL)

    {

    erange:

      __set_errno (ERANGE);

      return NULL;

    }

  buffer[0] = '\0';

  cptr = strchr (name, '.');

  if (cptr == NULL)

    return buffer;

  ++cptr;

  cptr_len = strlen (cptr);

  if (cptr_len == 0)

    {

      if (buflen < 2)

	goto erange;

      return strcpy (buffer, ".");

    }

  if (__glibc_unlikely (cptr_len >= buflen))

    {

      __set_errno (ERANGE);

      return NULL;

    }

  return memcpy (buffer, cptr, cptr_len + 1);

}

libnsl_hidden_nolink_def (nis_domain_of_r, GLIBC_2_1)