/*

 * Logical Evidence File (LEF) extended attribute functions

 *

 * Copyright (C) 2006-2024, 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 <common.h>

#include <byte_stream.h>

#include <memory.h>

#include <types.h>

#include "libewf_debug.h"

#include "libewf_lef_extended_attribute.h"

#include "libewf_libcerror.h"

#include "libewf_libcnotify.h"

#include "libewf_libuna.h"

/* Creates an extended attribute

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

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_initialize(

     libewf_lef_extended_attribute_t **lef_extended_attribute,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_initialize";

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended attribute.",

     function );

    return( -1 );

  }

  if( *lef_extended_attribute != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid extended attribute value already set.",

     function );

    return( -1 );

  }

  *lef_extended_attribute = memory_allocate_structure(

                             libewf_lef_extended_attribute_t );

  if( *lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create extended attribute.",

     function );

    goto on_error;

  }

  if( memory_set(

       *lef_extended_attribute,

       0,

       sizeof( libewf_lef_extended_attribute_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

     "%s: unable to clear extended attribute.",

     function );

    goto on_error;

  }

  return( 1 );

on_error:

  if( *lef_extended_attribute != NULL )

  {

    memory_free(

     *lef_extended_attribute );

    *lef_extended_attribute = NULL;

  }

  return( -1 );

}

/* Frees an extended attribute

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_free(

     libewf_lef_extended_attribute_t **lef_extended_attribute,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_free";

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended attribute.",

     function );

    return( -1 );

  }

  if( *lef_extended_attribute != NULL )

  {

    if( ( *lef_extended_attribute )->name != NULL )

    {

      memory_free(

       ( *lef_extended_attribute )->name );

    }

    if( ( *lef_extended_attribute )->value != NULL )

    {

      memory_free(

       ( *lef_extended_attribute )->value );

    }

    memory_free(

     *lef_extended_attribute );

    *lef_extended_attribute = NULL;

  }

  return( 1 );

}

/* Clones the extended attribute

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_clone(

     libewf_lef_extended_attribute_t **destination_lef_extended_attribute,

     libewf_lef_extended_attribute_t *source_lef_extended_attribute,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_clone";

  if( destination_lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid destination extended attribute.",

     function );

    return( -1 );

  }

  if( *destination_lef_extended_attribute != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid destination extended attribute value already set.",

     function );

    return( -1 );

  }

  if( source_lef_extended_attribute == NULL )

  {

    *destination_lef_extended_attribute = NULL;

    return( 1 );

  }

  *destination_lef_extended_attribute = memory_allocate_structure(

                             libewf_lef_extended_attribute_t );

  if( *destination_lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

     "%s: unable to create destination extended attribute.",

     function );

    goto on_error;

  }

  ( *destination_lef_extended_attribute )->name  = NULL;

  ( *destination_lef_extended_attribute )->value = NULL;

  if( source_lef_extended_attribute->name != NULL )

  {

    ( *destination_lef_extended_attribute )->name = (uint8_t *) memory_allocate(

                                                                 sizeof( uint8_t ) * source_lef_extended_attribute->name_size );

    if( ( *destination_lef_extended_attribute )->name == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

       "%s: unable to create destination name.",

       function );

      goto on_error;

    }

    if( memory_copy(

         ( *destination_lef_extended_attribute )->name,

         source_lef_extended_attribute->name,

         source_lef_extended_attribute->name_size ) == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_COPY_FAILED,

       "%s: unable to copy source to destination name.",

       function );

      goto on_error;

    }

    ( *destination_lef_extended_attribute )->value_size = source_lef_extended_attribute->value_size;

  }

  if( source_lef_extended_attribute->value != NULL )

  {

    ( *destination_lef_extended_attribute )->value = (uint8_t *) memory_allocate(

                                                                  sizeof( uint8_t ) * source_lef_extended_attribute->value_size );

    if( ( *destination_lef_extended_attribute )->value == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

       "%s: unable to create destination value.",

       function );

      goto on_error;

    }

    if( memory_copy(

         ( *destination_lef_extended_attribute )->value,

         source_lef_extended_attribute->value,

         source_lef_extended_attribute->value_size ) == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_COPY_FAILED,

       "%s: unable to copy source to destination value.",

       function );

      goto on_error;

    }

    ( *destination_lef_extended_attribute )->value_size = source_lef_extended_attribute->value_size;

  }

  return( 1 );

on_error:

  if( *destination_lef_extended_attribute != NULL )

  {

    memory_free(

     *destination_lef_extended_attribute );

    *destination_lef_extended_attribute = NULL;

  }

  return( -1 );

}

/* Reads an extended attribute

 * Returns the number of bytes read or -1 on error

 */

ssize_t libewf_lef_extended_attribute_read_data(

         libewf_lef_extended_attribute_t *lef_extended_attribute,

         const uint8_t *data,

         size_t data_size,

         libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_read_data";

  size_t data_offset    = 0;

  uint32_t name_size    = 0;

  uint32_t value_size   = 0;

#if defined( HAVE_DEBUG_OUTPUT )

  uint32_t value_32bit  = 0;

#endif

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended attribute.",

     function );

    return( -1 );

  }

  if( lef_extended_attribute->name != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid extended attribute - name value already set.",

     function );

    return( -1 );

  }

  if( lef_extended_attribute->value != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid extended attribute - value value already set.",

     function );

    return( -1 );

  }

  if( data == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: missing data.",

     function );

    return( -1 );

  }

  if( ( data_size < 13 )

   || ( data_size > (size_t) SSIZE_MAX ) )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS,

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

     function );

    return( -1 );

  }

  byte_stream_copy_to_uint32_little_endian(

   &( data[ 5 ] ),

   name_size );

  byte_stream_copy_to_uint32_little_endian(

   &( data[ 9 ] ),

   value_size );

  data_offset = 13;

  if( name_size > 0 )

  {

#if SIZEOF_SIZE_T < 4

    if( ( (uint32_t) name_size > ( (uint32_t) SSIZE_MAX / 2 ) )

     || ( name_size > (uint32_t) ( data_size - data_offset ) ) )

#elif SIZEOF_SIZE_T == 4

    if( ( (size_t) name_size > ( (size_t) SSIZE_MAX / 2 ) )

     || ( (size_t) name_size > ( data_size - data_offset ) ) )

#else

    if( (size_t) name_size > ( data_size - data_offset ) )

#endif

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

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

       function );

      goto on_error;

    }

    name_size *= 2;

    data_offset += name_size;

  }

  if( value_size > 0 )

  {

#if SIZEOF_SIZE_T < 4

    if( ( (uint32_t) value_size > ( (uint32_t) SSIZE_MAX / 2 ) )

     || ( value_size > (uint32_t) ( data_size - data_offset ) ) )

#elif SIZEOF_SIZE_T == 4

    if( ( (size_t) value_size > ( (size_t) SSIZE_MAX / 2 ) )

     || ( (size_t) value_size > ( data_size - data_offset ) ) )

#else

    if( (size_t) value_size > ( data_size - data_offset ) )

#endif

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

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

       function );

      goto on_error;

    }

    value_size *= 2;

    data_offset += value_size;

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    libcnotify_printf(

     "%s: extended attribute data:\n",

     function );

    libcnotify_print_data(

     data,

     data_offset,

     0 );

  }

#endif

  lef_extended_attribute->is_branch = data[ 4 ];

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    byte_stream_copy_to_uint32_little_endian(

     data,

     value_32bit );

    libcnotify_printf(

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

     function,

     value_32bit );

    libcnotify_printf(

     "%s: is branch\t\t\t: 0x%02" PRIx8 "\n",

     function,

     data[ 4 ] );

    libcnotify_printf(

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

     function,

     name_size );

    libcnotify_printf(

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

     function,

     value_size );

  }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

  data_offset = 13;

  if( name_size > 0 )

  {

    if( name_size > MEMORY_MAXIMUM_ALLOCATION_SIZE )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

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

       function );

      goto on_error;

    }

    lef_extended_attribute->name = (uint8_t *) memory_allocate(

                                                sizeof( uint8_t ) * name_size );

    if( lef_extended_attribute->name == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

       "%s: unable to create name.",

       function );

      goto on_error;

    }

    if( memory_copy(

         lef_extended_attribute->name,

         &( data[ data_offset ] ),

         name_size ) == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_SET_FAILED,

       "%s: unable to set name.",

       function );

      goto on_error;

    }

    lef_extended_attribute->name_size = name_size;

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      if( libewf_debug_print_utf16_string_value(

           function,

           "name\t\t\t\t",

           lef_extended_attribute->name,

           lef_extended_attribute->name_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

    data_offset += name_size;

  }

  if( value_size > 0 )

  {

    if( value_size > MEMORY_MAXIMUM_ALLOCATION_SIZE )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS,

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

       function );

      goto on_error;

    }

    lef_extended_attribute->value = (uint8_t *) memory_allocate(

                                                 sizeof( uint8_t ) * value_size );

    if( lef_extended_attribute->value == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_INSUFFICIENT,

       "%s: unable to create value.",

       function );

      goto on_error;

    }

    if( memory_copy(

         lef_extended_attribute->value,

         &( data[ data_offset ] ),

         value_size ) == NULL )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_MEMORY,

       LIBCERROR_MEMORY_ERROR_SET_FAILED,

       "%s: unable to set value.",

       function );

      goto on_error;

    }

    lef_extended_attribute->value_size = value_size;

#if defined( HAVE_DEBUG_OUTPUT )

    if( libcnotify_verbose != 0 )

    {

      if( libewf_debug_print_utf16_string_value(

           function,

           "value\t\t\t\t",

           lef_extended_attribute->value,

           lef_extended_attribute->value_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

    data_offset += value_size;

  }

#if defined( HAVE_DEBUG_OUTPUT )

  if( libcnotify_verbose != 0 )

  {

    libcnotify_printf(

     "\n" );

  }

#endif /* defined( HAVE_DEBUG_OUTPUT ) */

  return( (ssize_t) data_offset );

on_error:

  if( lef_extended_attribute->value != NULL )

  {

    memory_free(

     lef_extended_attribute->value );

    lef_extended_attribute->value = NULL;

  }

  lef_extended_attribute->value_size = 0;

  if( lef_extended_attribute->name != NULL )

  {

    memory_free(

     lef_extended_attribute->name );

    lef_extended_attribute->name = NULL;

  }

  lef_extended_attribute->name_size = 0;

  return( -1 );

}

/* Retrieves the size of the UTF-8 encoded name

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_get_utf8_name_size(

     libewf_lef_extended_attribute_t *lef_extended_attribute,

     size_t *utf8_string_size,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_get_utf8_name_size";

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended_attribute.",

     function );

    return( -1 );

  }

  if( libuna_utf8_string_size_from_utf16_stream(

       lef_extended_attribute->name,

       lef_extended_attribute->name_size,

       LIBUNA_ENDIAN_LITTLE,

       utf8_string_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_CONVERSION,

     LIBCERROR_CONVERSION_ERROR_GENERIC,

     "%s: unable to determine UTF-8 string size.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the UTF-8 encoded name

 * The size should include the end of string character

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_get_utf8_name(

     libewf_lef_extended_attribute_t *lef_extended_attribute,

     uint8_t *utf8_string,

     size_t utf8_string_size,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_get_utf8_name";

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended_attribute.",

     function );

    return( -1 );

  }

  if( libuna_utf8_string_copy_from_utf16_stream(

       utf8_string,

       utf8_string_size,

       lef_extended_attribute->name,

       lef_extended_attribute->name_size,

       LIBUNA_ENDIAN_LITTLE,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_COPY_FAILED,

     "%s: unable to copy name to UTF-8 string.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the size of the UTF-16 encoded name

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_get_utf16_name_size(

     libewf_lef_extended_attribute_t *lef_extended_attribute,

     size_t *utf16_string_size,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_get_utf16_name_size";

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended_attribute.",

     function );

    return( -1 );

  }

  if( libuna_utf16_string_size_from_utf16_stream(

       lef_extended_attribute->name,

       lef_extended_attribute->name_size,

       LIBUNA_ENDIAN_LITTLE,

       utf16_string_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_CONVERSION,

     LIBCERROR_CONVERSION_ERROR_GENERIC,

     "%s: unable to determine UTF-16 string size.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the UTF-16 encoded name

 * The size should include the end of string character

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_get_utf16_name(

     libewf_lef_extended_attribute_t *lef_extended_attribute,

     uint16_t *utf16_string,

     size_t utf16_string_size,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_get_utf16_name";

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended_attribute.",

     function );

    return( -1 );

  }

  if( libuna_utf16_string_copy_from_utf16_stream(

       utf16_string,

       utf16_string_size,

       lef_extended_attribute->name,

       lef_extended_attribute->name_size,

       LIBUNA_ENDIAN_LITTLE,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_COPY_FAILED,

     "%s: unable to copy name to UTF-16 string.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the size of the UTF-8 encoded value

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_get_utf8_value_size(

     libewf_lef_extended_attribute_t *lef_extended_attribute,

     size_t *utf8_string_size,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_get_utf8_value_size";

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended_attribute.",

     function );

    return( -1 );

  }

  if( libuna_utf8_string_size_from_utf16_stream(

       lef_extended_attribute->value,

       lef_extended_attribute->value_size,

       LIBUNA_ENDIAN_LITTLE,

       utf8_string_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_CONVERSION,

     LIBCERROR_CONVERSION_ERROR_GENERIC,

     "%s: unable to determine UTF-8 string size.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the UTF-8 encoded value

 * The size should include the end of string character

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_get_utf8_value(

     libewf_lef_extended_attribute_t *lef_extended_attribute,

     uint8_t *utf8_string,

     size_t utf8_string_size,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_get_utf8_value";

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended_attribute.",

     function );

    return( -1 );

  }

  if( libuna_utf8_string_copy_from_utf16_stream(

       utf8_string,

       utf8_string_size,

       lef_extended_attribute->value,

       lef_extended_attribute->value_size,

       LIBUNA_ENDIAN_LITTLE,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_COPY_FAILED,

     "%s: unable to copy value to UTF-8 string.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the size of the UTF-16 encoded value

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_get_utf16_value_size(

     libewf_lef_extended_attribute_t *lef_extended_attribute,

     size_t *utf16_string_size,

     libcerror_error_t **error )

{

  static char *function = "libewf_lef_extended_attribute_get_utf16_value_size";

  if( lef_extended_attribute == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid extended_attribute.",

     function );

    return( -1 );

  }

  if( libuna_utf16_string_size_from_utf16_stream(

       lef_extended_attribute->value,

       lef_extended_attribute->value_size,

       LIBUNA_ENDIAN_LITTLE,

       utf16_string_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_CONVERSION,

     LIBCERROR_CONVERSION_ERROR_GENERIC,

     "%s: unable to determine UTF-16 string size.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the UTF-16 encoded value

 * The size should include the end of string character

 * Returns 1 if successful or -1 on error

 */

int libewf_lef_extended_attribute_get_utf16_value(

     libewf_lef_extended_attribute_t *lef_extended_attribute,

     uint16_t *utf16_string,