/*

 * OSS-Fuzz target for libregf value type

 *

 * Copyright (C) 2009-2023, 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_libregf.h"

#if !defined( LIBREGF_HAVE_BFIO )

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

 * Returns 1 if successful or -1 on error

 */

LIBREGF_EXTERN \

int libregf_file_open_file_io_handle(

     libregf_file_t *file,

     libbfio_handle_t *file_io_handle,

     int access_flags,

     libregf_error_t **error );

#endif /* !defined( LIBREGF_HAVE_BFIO ) */

int LLVMFuzzerTestOneInput(

     const uint8_t *data,

     size_t size )

{

  libbfio_handle_t *file_io_handle = NULL;

  libregf_file_t *file             = NULL;

  libregf_key_t *root_key          = NULL;

  libregf_key_t *sub_key           = NULL;

  libregf_value_t *value           = NULL;

  uint32_t value_type              = 0;

  int number_of_sub_keys           = 0;

  int number_of_values             = 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( libregf_file_initialize(

       &file,

       NULL ) != 1 )

  {

    goto on_error_libbfio;

  }

  if( libregf_file_open_file_io_handle(

       file,

       file_io_handle,

       LIBREGF_OPEN_READ,

       NULL ) != 1 )

  {

    goto on_error_libregf_file;

  }

  if( libregf_file_get_root_key(

       file,

       &root_key,

       NULL ) == 1 )

  {

    if( libregf_key_get_number_of_sub_keys(

         root_key,

         &number_of_sub_keys,

         NULL ) != 1 )

    {

      goto on_error_libregf_root_key;

    }

    if( number_of_sub_keys > 0 )

    {

      if( libregf_key_get_sub_key(

           root_key,

           0,

           &sub_key,

           NULL ) != 1 )

      {

        goto on_error_libregf_root_key;

      }

      if( libregf_key_get_number_of_values(

           sub_key,

           &number_of_values,

           NULL ) != 1 )

      {

        goto on_error_libregf_sub_key;

      }

      if( number_of_sub_keys > 0 )

      {

        if( libregf_key_get_value(

             root_key,

             0,

             &value,

             NULL ) != 1 )

        {

          goto on_error_libregf_sub_key;

        }

        libregf_value_get_value_type(

         value,

         &value_type,

         NULL );

        libregf_value_free(

         &value,

         NULL );

      }

on_error_libregf_sub_key:

      libregf_key_free(

       &sub_key,

       NULL );

    }

on_error_libregf_root_key:

    libregf_key_free(

     &root_key,

     NULL );

  }

  libregf_file_close(

   file,

   NULL );

on_error_libregf_file:

  libregf_file_free(

   &file,

   NULL );

on_error_libbfio:

  libbfio_handle_free(

   &file_io_handle,

   NULL );

  return( 0 );

}

} /* extern "C" */