/*

 * Cache entry functions

 *

 * Copyright (C) 2010-2026, 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 <common.h>

#include <memory.h>

#include <types.h>

#include "libwtcdb_cache_entry.h"

#include "libwtcdb_crc.h"

#include "libwtcdb_debug.h"

#include "libwtcdb_definitions.h"

#include "libwtcdb_io_handle.h"

#include "libwtcdb_libbfio.h"

#include "libwtcdb_libcerror.h"

#include "libwtcdb_libcnotify.h"

#include "libwtcdb_libuna.h"

#include "wtcdb_cache_entry.h"

/* Creates a cache entry

 * Make sure the value cache_entry is referencing, is set to NULL

 * Returns 1 if successful or -1 on error

 */

int libwtcdb_cache_entry_initialize(

     libwtcdb_cache_entry_t **cache_entry,

     libcerror_error_t **error )

{

  static char *function = "libwtcdb_cache_entry_initialize";

  if( cache_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid cache entry.",

     function );

    return( -1 );

  }

  if( *cache_entry != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid cache entry value already set.",

     function );

    return( -1 );

  }

  *cache_entry = memory_allocate_structure(

                  libwtcdb_cache_entry_t );

  if( *cache_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create cache entry.",

     function );

    goto on_error;

  }

  if( memory_set(

       *cache_entry,

       0,

       sizeof( libwtcdb_cache_entry_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

     "%s: unable to clear cache entry.",

     function );

    goto on_error;

  }

  return( 1 );

on_error:

  if( *cache_entry != NULL )

  {

    memory_free(

     *cache_entry );

    *cache_entry = NULL;

  }

  return( -1 );

}

/* Frees a cache entry

 * Returns 1 if successful or -1 on error

 */

int libwtcdb_cache_entry_free(

     libwtcdb_cache_entry_t **cache_entry,

     libcerror_error_t **error )

{

  static char *function = "libwtcdb_cache_entry_free";

  if( cache_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid cache entry.",

     function );

    return( -1 );

  }

  if( *cache_entry != NULL )

  {

    if( ( *cache_entry )->identifier != NULL )

    {

      memory_free(

       ( *cache_entry )->identifier );

    }

    memory_free(

     *cache_entry );

    *cache_entry = NULL;

  }

  return( 1 );

}

/* Reads a cache entry header

 * Returns 1 if successful or -1 on error

 */

int libwtcdb_cache_entry_header_read_data(

     libwtcdb_cache_entry_t *cache_entry,

     libwtcdb_io_handle_t *io_handle,

     const uint8_t *data,

     size_t data_size,

     libcerror_error_t **error )

{

  static char *function          = "libwtcdb_cache_entry_header_read_data";

  size_t cache_entry_header_size = 0;

  uint64_t calculated_crc        = 0;

  uint64_t stored_header_crc     = 0;

#if defined( HAVE_DEBUG_OUTPUT )

  uint64_t value_64bit           = 0;

  uint32_t value_32bit           = 0;

#endif

  if( cache_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid cache entry.",

     function );

    return( -1 );

  }

  if( io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid IO handle.",

     function );

    return( -1 );

  }

  if( io_handle->file_type != LIBWTCDB_FILE_TYPE_CACHE )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

     "%s: invalid IO handle - unsupported file type.",

     function );

    return( -1 );

  }

  if( ( io_handle->format_version != 20 )

   && ( io_handle->format_version != 21 )

   && ( io_handle->format_version != 30 )

   && ( io_handle->format_version != 31 )

   && ( io_handle->format_version != 32 ) )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

     "%s: invalid IO handle - unsupported format version: %" PRIu32 ".",

     function,

     io_handle->format_version );

    return( -1 );

  }

  if( io_handle->format_version == 20 )

  {

    cache_entry_header_size = sizeof( wtcdb_cache_entry_v20_t );

  }

  else if( io_handle->format_version == 21 )

  {

    cache_entry_header_size = sizeof( wtcdb_cache_entry_v21_t );

  }

  else if( ( io_handle->format_version == 30 )

        || ( io_handle->format_version == 31 )

        || ( io_handle->format_version == 32 ) )

  {

    cache_entry_header_size = sizeof( wtcdb_cache_entry_v30_t );

  }

  if( data == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid data.",

     function );

    return( -1 );

  }

  if( data_size < cache_entry_header_size )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,

     "%s: invalid data size value too small.",

     function );

    return( -1 );

  }

  if( data_size > (size_t) SSIZE_MAX )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_EXCEEDS_MAXIMUM,

     "%s: invalid data size value exceeds maximum.",

     function );

    return( -1 );

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    libcnotify_printf(

     "%s: cache entry header data:\n",

     function );

    libcnotify_print_data(

     data,

     data_size,

     LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );

  }

#endif

  if( memory_compare(

       ( (wtcdb_cache_entry_v20_t *) data )->signature,

       wtcdb_cache_file_signature,

       4 ) != 0 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

     "%s: invalid signature.",

     function );

    return( -1 );

  }

  byte_stream_copy_to_uint32_little_endian(

   ( (wtcdb_cache_entry_v20_t *) data )->size,

   cache_entry->data_size );

  byte_stream_copy_to_uint64_little_endian(

   ( (wtcdb_cache_entry_v20_t *) data )->entry_hash,

   cache_entry->hash );

  if( io_handle->format_version == 20 )

  {

    byte_stream_copy_to_uint32_little_endian(

     ( (wtcdb_cache_entry_v20_t *) data )->identifier_string_size,

     cache_entry->identifier_size );

    byte_stream_copy_to_uint32_little_endian(

     ( (wtcdb_cache_entry_v20_t *) data )->padding_size,

     cache_entry->padding_size );

    byte_stream_copy_to_uint32_little_endian(

     ( (wtcdb_cache_entry_v20_t *) data )->data_size,

     cache_entry->cached_data_size );

    byte_stream_copy_to_uint64_little_endian(

     ( (wtcdb_cache_entry_v20_t *) data )->header_checksum,

     stored_header_crc );

    byte_stream_copy_to_uint64_little_endian(

     ( (wtcdb_cache_entry_v20_t *) data )->data_checksum,

     cache_entry->data_crc );

  }

  else if( io_handle->format_version == 21 )

  {

    byte_stream_copy_to_uint32_little_endian(

     ( (wtcdb_cache_entry_v21_t *) data )->identifier_string_size,

     cache_entry->identifier_size );

    byte_stream_copy_to_uint32_little_endian(

     ( (wtcdb_cache_entry_v21_t *) data )->padding_size,

     cache_entry->padding_size );

    byte_stream_copy_to_uint32_little_endian(

     ( (wtcdb_cache_entry_v21_t *) data )->data_size,

     cache_entry->cached_data_size );

    byte_stream_copy_to_uint64_little_endian(

     ( (wtcdb_cache_entry_v21_t *) data )->data_checksum,

     cache_entry->data_crc );

    byte_stream_copy_to_uint64_little_endian(

     ( (wtcdb_cache_entry_v21_t *) data )->header_checksum,

     stored_header_crc );

  }

  else if( ( io_handle->format_version == 30 )

        || ( io_handle->format_version == 31 )

        || ( io_handle->format_version == 32 ) )

  {

    byte_stream_copy_to_uint32_little_endian(

     ( (wtcdb_cache_entry_v30_t *) data )->identifier_string_size,

     cache_entry->identifier_size );

    byte_stream_copy_to_uint32_little_endian(

     ( (wtcdb_cache_entry_v30_t *) data )->padding_size,

     cache_entry->padding_size );

    byte_stream_copy_to_uint32_little_endian(

     ( (wtcdb_cache_entry_v30_t *) data )->data_size,

     cache_entry->cached_data_size );

    byte_stream_copy_to_uint64_little_endian(

     ( (wtcdb_cache_entry_v30_t *) data )->data_checksum,

     cache_entry->data_crc );

    byte_stream_copy_to_uint64_little_endian(

     ( (wtcdb_cache_entry_v30_t *) data )->header_checksum,

     stored_header_crc );

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    libcnotify_printf(

     "%s: signature\t\t\t: %c%c%c%c\n",

     function,

     ( (wtcdb_cache_entry_v20_t *) data )->signature[ 0 ],

     ( (wtcdb_cache_entry_v20_t *) data )->signature[ 1 ],

     ( (wtcdb_cache_entry_v20_t *) data )->signature[ 2 ],

     ( (wtcdb_cache_entry_v20_t *) data )->signature[ 3 ] );

    libcnotify_printf(

     "%s: size\t\t\t\t: %" PRIu32 "\n",

     function,

     cache_entry->data_size );

    libcnotify_printf(

     "%s: entry hash\t\t\t: 0x%08" PRIx64 "\n",

     function,

     cache_entry->hash );

    if( io_handle->format_version == 20 )

    {

/* TODO make a string of this ?*/

      libcnotify_printf(

       "%s: file extension\t\t\t: ",

       function );

      if( ( (wtcdb_cache_entry_v20_t *) data )->file_extension[ 0 ] == 0 )

      {

        libcnotify_printf(

         "(none)" );

      }

      else

      {

        libcnotify_printf(

         "%c",

         ( (wtcdb_cache_entry_v20_t *) data )->file_extension[ 0 ] );

      }

      if( ( (wtcdb_cache_entry_v20_t *) data )->file_extension[ 2 ] != 0 )

      {

        libcnotify_printf(

         "%c",

         ( (wtcdb_cache_entry_v20_t *) data )->file_extension[ 2 ] );

      }

      if( ( (wtcdb_cache_entry_v20_t *) data )->file_extension[ 4 ] != 0 )

      {

        libcnotify_printf(

         "%c",

         ( (wtcdb_cache_entry_v20_t *) data )->file_extension[ 4 ] );

      }

      if( ( (wtcdb_cache_entry_v20_t *) data )->file_extension[ 6 ] != 0 )

      {

        libcnotify_printf(

         "%c",

         ( (wtcdb_cache_entry_v20_t *) data )->file_extension[ 6 ] );

      }

      libcnotify_printf(

       "\n" );

    }

    libcnotify_printf(

     "%s: identifier string size\t\t: %" PRIu32 "\n",

     function,

     cache_entry->identifier_size );

    libcnotify_printf(

     "%s: padding size\t\t\t: %" PRIu32 "\n",

     function,

     cache_entry->padding_size );

    libcnotify_printf(

     "%s: data size\t\t\t: %" PRIu32 "\n",

     function,

     cache_entry->cached_data_size );

    if( io_handle->format_version == 20 )

    {

      byte_stream_copy_to_uint32_little_endian(

       ( (wtcdb_cache_entry_v20_t *) data )->unknown1,

       value_32bit );

    }

    else if( ( io_handle->format_version == 21 )

          || ( io_handle->format_version == 30 )

          || ( io_handle->format_version == 31 )

          || ( io_handle->format_version == 32 ) )

    {

      byte_stream_copy_to_uint32_little_endian(

       ( (wtcdb_cache_entry_v21_t *) data )->unknown1,

       value_32bit );

    }

    libcnotify_printf(

     "%s: unknown1\t\t\t\t: 0x%08" PRIx32 "\n",

     function,

     value_32bit );

    if( ( io_handle->format_version == 30 )

     || ( io_handle->format_version == 31 )

     || ( io_handle->format_version == 32 ) )

    {

      byte_stream_copy_to_uint64_little_endian(

       ( (wtcdb_cache_entry_v30_t *) data )->unknown2,

       value_64bit );

      libcnotify_printf(

       "%s: unknown2\t\t\t\t: 0x%08" PRIx64 "\n",

       function,

       value_64bit );

    }

    libcnotify_printf(

     "%s: data checksum\t\t\t: 0x%08" PRIx64 "\n",

     function,

     cache_entry->data_crc );

    libcnotify_printf(

     "%s: header checksum\t\t\t: 0x%08" PRIx64 "\n",

     function,

     stored_header_crc );

    libcnotify_printf(

     "\n" );

  }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

#if ( SIZEOF_SIZE_T <= 4 )

  if( ( cache_entry->data_size < cache_entry_header_size )

   || ( cache_entry->data_size > (uint32_t) SSIZE_MAX ) )

#else

  if( cache_entry->data_size < cache_entry_header_size )

#endif

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

     "%s: invalid cache entry - data value out of bounds.",

     function );

    return( -1 );

  }

  if( libwtcdb_crc64_weak_calculate(

       &calculated_crc,

       data,

       cache_entry_header_size - 8,

       (uint64_t) -1,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

     "%s: unable to calculate CRC-64.",

     function );

    return( -1 );

  }

  if( stored_header_crc != calculated_crc )

  {

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      libcnotify_printf(

       "%s: mismatch in header CRC-64 ( 0x%08" PRIx64 " != 0x%08" PRIx64 " ).\n",

       function,

       stored_header_crc,

       calculated_crc );

    }

#endif

  }

  return( 1 );

}

/* Reads a cache entry

 * Returns 1 if successful or -1 on error

 */

int libwtcdb_cache_entry_read_file_io_handle(

     libwtcdb_cache_entry_t *cache_entry,

     libwtcdb_io_handle_t *io_handle,

     libbfio_handle_t *file_io_handle,

     off64_t file_offset,

     libcerror_error_t **error )

{

  uint8_t cache_entry_data[ sizeof( wtcdb_cache_entry_v20_t ) ];

  static char *function            = "libwtcdb_cache_entry_read_file_io_handle";

  uint32_t cache_entry_header_size = 0;

  size_t data_offset               = 0;

  ssize_t read_count               = 0;

#if defined( HAVE_DEBUG_OUTPUT )

  uint8_t *padding_data            = NULL;

#endif

  if( cache_entry == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid cache entry.",

     function );

    return( -1 );

  }

  if( io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid IO handle.",

     function );

    return( -1 );

  }

  if( io_handle->file_type != LIBWTCDB_FILE_TYPE_CACHE )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

     "%s: invalid IO handle - unsupported file type.",

     function );

    return( -1 );

  }

  if( ( io_handle->format_version != 20 )

   && ( io_handle->format_version != 21 )

   && ( io_handle->format_version != 30 )

   && ( io_handle->format_version != 31 )

   && ( io_handle->format_version != 32 ) )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

     "%s: invalid IO handle - unsupported format version: %" PRIu32 ".",

     function,

     io_handle->format_version );

    return( -1 );

  }

  if( io_handle->format_version == 20 )

  {

    cache_entry_header_size = sizeof( wtcdb_cache_entry_v20_t );

  }

  else if( io_handle->format_version == 21 )

  {

    cache_entry_header_size = sizeof( wtcdb_cache_entry_v21_t );

  }

  else if( ( io_handle->format_version == 30 )

        || ( io_handle->format_version == 31 )

        || ( io_handle->format_version == 32 ) )

  {

    cache_entry_header_size = sizeof( wtcdb_cache_entry_v30_t );

  }

  if( cache_entry->identifier != NULL )

  {

    memory_free(

     cache_entry->identifier );

    cache_entry->identifier = NULL;

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    libcnotify_printf(

     "%s: reading cache entry header at offset: %" PRIi64 " (0x%08" PRIx64 ")\n",

     function,

     file_offset,

     file_offset );

  }

#endif

  read_count = libbfio_handle_read_buffer_at_offset(

                file_io_handle,

                cache_entry_data,

                cache_entry_header_size,

                file_offset,

                error );

  if( read_count != (ssize_t) cache_entry_header_size )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read cache entry header data at offset: %" PRIi64 " (0x%08" PRIx64 ").",

     function,

     file_offset,

     file_offset );

    goto on_error;

  }

  if( libwtcdb_cache_entry_header_read_data(

       cache_entry,

       io_handle,

       cache_entry_data,

       cache_entry_header_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read cache entry header.",

     function );

    goto on_error;

  }

  data_offset = cache_entry_header_size;

  if( cache_entry->identifier_size > 0 )

  {

    if( cache_entry->identifier_size > MEMORY_MAXIMUM_ALLOCATION_SIZE )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_EXCEEDS_MAXIMUM,

       "%s: invalid cache entry - identifier size value exceeds maximum allocation size.",

       function );

      goto on_error;

    }

    if( ( cache_entry->identifier_size > cache_entry->data_size )

     || ( data_offset > ( cache_entry->data_size - cache_entry->identifier_size ) ) )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

       "%s: invalid identifier size value out of bounds.",

       function );

      goto on_error;

    }

    cache_entry->identifier = (uint8_t *) memory_allocate(

                                           sizeof( uint8_t ) * cache_entry->identifier_size );

    if( cache_entry->identifier == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

       "%s: unable to create identifier string.",

       function );

      goto on_error;

    }

    read_count = libbfio_handle_read_buffer(

                  file_io_handle,

                  cache_entry->identifier,

                  cache_entry->identifier_size,

                  error );

    if( read_count != (ssize_t) cache_entry->identifier_size )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_IO,

       LIBCERROR_IO_ERROR_READ_FAILED,

       "%s: unable to read cache entry identifier string.",

       function );

      goto on_error;

    }

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      libcnotify_printf(

       "%s: identifier string data:\n",

       function );

      libcnotify_print_data(

       cache_entry->identifier,

       cache_entry->identifier_size,

       LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );

    }

#endif

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      if( libwtcdb_debug_print_utf16_string_value(

           function,

           "identifier string\t\t",

           cache_entry->identifier,

           cache_entry->identifier_size,

           LIBUNA_ENDIAN_LITTLE,

           error ) != 1 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_RUNTIME,

         LIBCERROR_RUNTIME_ERROR_PRINT_FAILED,

         "%s: unable to print UTF-16 string value.",

         function );

        goto on_error;

      }

    }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

    data_offset += cache_entry->identifier_size;

  }

  if( cache_entry->padding_size > 0 )

  {

    if( cache_entry->padding_size > MEMORY_MAXIMUM_ALLOCATION_SIZE )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_EXCEEDS_MAXIMUM,

       "%s: invalid cache entry - padding size value exceeds maximum allocation size.",

       function );

      goto on_error;

    }

    if( ( cache_entry->padding_size > cache_entry->data_size )

     || ( data_offset > ( cache_entry->data_size - cache_entry->padding_size ) ) )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

       "%s: invalid padding size value out of bounds.",

       function );

      goto on_error;

    }

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      padding_data = (uint8_t *) memory_allocate(

                                  sizeof( uint8_t ) * cache_entry->padding_size );

      if( padding_data == NULL )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_MEMORY,

         LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

         "%s: unable to create padding data.",

         function );

        goto on_error;

      }

      read_count = libbfio_handle_read_buffer(

                    file_io_handle,

                    padding_data,

                    cache_entry->padding_size,

                    error );

      if( read_count != (ssize_t) cache_entry->padding_size )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_IO,

         LIBCERROR_IO_ERROR_READ_FAILED,

         "%s: unable to read cache entry padding data.",

         function );

        goto on_error;

      }

      libcnotify_printf(

       "%s: padding data:\n",

       function );

      libcnotify_print_data(

       padding_data,

       cache_entry->padding_size,

       LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );

    }

    data_offset += cache_entry->padding_size;

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

  }

#if defined( HAVE_DEBUG_OUTPUT )

  else if( libcnotify_verbose != 0 )

  {

    libcnotify_printf(

     "\n" );

  }

#endif

  return( 1 );

on_error:

  if( cache_entry->identifier != NULL )

  {

    memory_free(

     cache_entry->identifier );

    cache_entry->identifier = NULL;

  }

  return( -1 );

}