/* Copyright (C) 2009-2018 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 <ctype.h>

#include <errno.h>

#include <gshadow.h>

#include <stdio.h>

/* Define a line parsing function using the common code

   used in the nss_files module.  */

#define STRUCTURE	sgrp

#define ENTNAME		sgent

#define	EXTERN_PARSER	1

struct sgent_data {};

#include <nss/nss_files/files-parse.c>

/* Read one shadow entry from the given stream.  */

int

__fgetsgent_r (FILE *stream, struct sgrp *resbuf, char *buffer, size_t buflen,

	       struct sgrp **result)

{

  char *p;

  _IO_flockfile (stream);

  do

    {

      buffer[buflen - 1] = '\xff';

      p = fgets_unlocked (buffer, buflen, stream);

      if (p == NULL && feof_unlocked (stream))

	{

	  _IO_funlockfile (stream);

	  *result = NULL;

	  __set_errno (ENOENT);

	  return errno;

	}

      if (p == NULL || buffer[buflen - 1] != '\xff')

	{

	  _IO_funlockfile (stream);

	  *result = NULL;

	  __set_errno (ERANGE);

	  return errno;

	}

      /* Skip leading blanks.  */

      while (isspace (*p))

	++p;

    } while (*p == '\0' || *p == '#' ||	/* Ignore empty and comment lines.  */

	     /* Parse the line.  If it is invalid, loop to

		get the next line of the file to parse.  */

	     ! parse_line (buffer, (void *) resbuf, (void *) buffer, buflen,

			   &errno));

  _IO_funlockfile (stream);

  *result = resbuf;

  return 0;

}

weak_alias (__fgetsgent_r, fgetsgent_r)