/*

 * OSS-Fuzz target for libfsfat file_entry type

 *

 * Copyright (C) 2021-2024, Joachim Metz <joachim.metz@gmail.com>

 *

 * Refer to AUTHORS for acknowledgements.

 *

 * This program 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 3 of the License, or

 * (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 *

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

 * along with this program.  If not, see <https://www.gnu.org/licenses/>.

 */

#include <stddef.h>

#include <stdint.h>

/* Note that some of the OSS-Fuzz engines use C++

 */

extern "C" {

#include "ossfuzz_libbfio.h"

#include "ossfuzz_libfsfat.h"

#if !defined( LIBFSFAT_HAVE_BFIO )

/* Opens a volume using a Basic File IO (bfio) handle

 * Returns 1 if successful or -1 on error

 */

LIBFSFAT_EXTERN \

int libfsfat_volume_open_file_io_handle(

     libfsfat_volume_t *volume,

     libbfio_handle_t *file_io_handle,

     int access_flags,

     libfsfat_error_t **error );

#endif /* !defined( LIBFSFAT_HAVE_BFIO ) */

int LLVMFuzzerTestOneInput(

     const uint8_t *data,

     size_t size )

{

  libbfio_handle_t *file_io_handle      = NULL;

  libfsfat_file_entry_t *root_directory = NULL;

  libfsfat_file_entry_t *sub_file_entry = NULL;

  libfsfat_volume_t *volume             = NULL;

  int number_of_sub_file_entries        = 0;

  if( libbfio_memory_range_initialize(

       &file_io_handle,

       NULL ) != 1 )

  {

    return( 0 );

  }

  if( libbfio_memory_range_set(

       file_io_handle,

       (uint8_t *) data,

       size,

       NULL ) != 1 )

  {

    goto on_error_libbfio;

  }

  if( libfsfat_volume_initialize(

       &volume,

       NULL ) != 1 )

  {

    goto on_error_libbfio;

  }

  if( libfsfat_volume_open_file_io_handle(

       volume,

       file_io_handle,

       LIBFSFAT_OPEN_READ,

       NULL ) != 1 )

  {

    goto on_error_libfsfat_volume;

  }

  if( libfsfat_volume_get_root_directory(

       volume,

       &root_directory,

       NULL ) == 1 )

  {

    if( libfsfat_file_entry_get_number_of_sub_file_entries(

         root_directory,

         &number_of_sub_file_entries,

         NULL ) != 1 )

    {

      goto on_error_libfsfat_root_directory;

    }

    if( number_of_sub_file_entries > 0 )

    {

      if( libfsfat_file_entry_get_sub_file_entry_by_index(

           root_directory,

           0,

           &sub_file_entry,

           NULL ) != 1 )

      {

        goto on_error_libfsfat_root_directory;

      }

      libfsfat_file_entry_free(

       &sub_file_entry,

       NULL );

    }

on_error_libfsfat_root_directory:

    libfsfat_file_entry_free(

     &root_directory,

     NULL );

  }

  libfsfat_volume_close(

   volume,

   NULL );

on_error_libfsfat_volume:

  libfsfat_volume_free(

   &volume,

   NULL );

on_error_libbfio:

  libbfio_handle_free(

   &file_io_handle,

   NULL );

  return( 0 );

}

} /* extern "C" */