/*

 * OSS-Fuzz target for libluksde volume type

 *

 * Copyright (C) 2013-2026, 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_libluksde.h"

#if !defined( LIBLUKSDE_HAVE_BFIO )

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

 * Returns 1 if successful or -1 on error

 */

LIBLUKSDE_EXTERN \

int libluksde_volume_open_file_io_handle(

     libluksde_volume_t *volume,

     libbfio_handle_t *file_io_handle,

     int access_flags,

     libluksde_error_t **error );

#endif /* !defined( LIBLUKSDE_HAVE_BFIO ) */

int LLVMFuzzerTestOneInput(

     const uint8_t *data,

     size_t size )

{

  uint8_t buffer[ 512 ];

  uint8_t uuid[ 16 ];

  libbfio_handle_t *file_io_handle = NULL;

  libluksde_volume_t *volume       = NULL;

  off64_t volume_offset            = 0;

  size64_t volume_size             = 0;

  int encryption_chaining_mode     = 0;

  int encryption_method            = 0;

  int is_locked                    = 0;

  int read_iterator                = 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( libluksde_volume_initialize(

       &volume,

       NULL ) != 1 )

  {

    goto on_error_libbfio;

  }

  if( libluksde_volume_set_utf8_password(

       volume,

       (uint8_t *) "luksde-TEST",

       11,

       NULL ) != 1 )

  {

    goto on_error_libbfio;

  }

  if( libluksde_volume_open_file_io_handle(

       volume,

       file_io_handle,

       LIBLUKSDE_OPEN_READ,

       NULL ) != 1 )

  {

    goto on_error_libluksde;

  }

  if( libluksde_volume_get_encryption_method(

       volume,

       &encryption_method,

       &encryption_chaining_mode,

       NULL ) != 1 )

  {

    goto on_error_libluksde;

  }

  if( libluksde_volume_get_volume_identifier(

       volume,

       uuid,

       16,

       NULL ) != 1 )

  {

    goto on_error_libluksde;

  }

  is_locked = libluksde_volume_is_locked(

               volume,

         NULL );

  if( is_locked == -1 )

  {

    goto on_error_libluksde;

  }

  else if( is_locked == 0 )

  {

    if( libluksde_volume_get_size(

         volume,

         &volume_size,

         NULL ) != 1 )

    {

      goto on_error_libluksde;

    }

    for( read_iterator = 0;

         read_iterator < 128;

         read_iterator++ )

    {

      if( volume_offset >= volume_size )

      {

        break;

      }

      if( libluksde_volume_read_buffer_at_offset(

           volume,

           buffer,

           497,

           volume_offset,

           NULL ) == -1 )

      {

        goto on_error_libluksde;

      }

      volume_offset += 497;

    }

  }

  libluksde_volume_close(

   volume,

   NULL );

on_error_libluksde:

  libluksde_volume_free(

   &volume,

   NULL );

on_error_libbfio:

  libbfio_handle_free(

   &file_io_handle,

   NULL );

  return( 0 );

}

} /* extern "C" */