/*

 * Value functions

 *

 * Copyright (C) 2009-2026, 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 "libregf_definitions.h"

#include "libregf_io_handle.h"

#include "libregf_libbfio.h"

#include "libregf_libcerror.h"

#include "libregf_multi_string.h"

#include "libregf_value.h"

#include "libregf_value_item.h"

/* Creates a value

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

 * Returns 1 if successful or -1 on error

 */

int libregf_value_initialize(

     libregf_value_t **value,

     libregf_io_handle_t *io_handle,

     libbfio_handle_t *file_io_handle,

     off64_t file_offset,

     libregf_value_item_t *value_item,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_initialize";

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  if( *value != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

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

     function );

    return( -1 );

  }

  if( value_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value item.",

     function );

    return( -1 );

  }

  internal_value = memory_allocate_structure(

                    libregf_internal_value_t );

  if( internal_value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

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

     function );

    goto on_error;

  }

  if( memory_set(

       internal_value,

       0,

       sizeof( libregf_internal_value_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

     "%s: unable to clear internal value.",

     function );

    memory_free(

     internal_value );

    return( -1 );

  }

  if( libregf_value_item_clone(

       &( internal_value->value_item ),

       value_item,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to clone value item.",

     function );

    goto on_error;

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_initialize(

       &( internal_value->read_write_lock ),

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to initialize read/write lock.",

     function );

    goto on_error;

  }

#endif

  internal_value->file_io_handle = file_io_handle;

  internal_value->io_handle      = io_handle;

  internal_value->file_offset    = file_offset;

  *value = (libregf_value_t *) internal_value;

  return( 1 );

on_error:

  if( internal_value != NULL )

  {

    if( internal_value->value_item != NULL )

    {

      libregf_value_item_free(

       &( internal_value->value_item ),

       NULL );

    }

    memory_free(

     internal_value );

  }

  return( -1 );

}

/* Frees a value

 * Returns 1 if successful or -1 on error

 */

int libregf_value_free(

     libregf_value_t **value,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_free";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  if( *value != NULL )

  {

    internal_value = (libregf_internal_value_t *) *value;

    *value         = NULL;

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

    if( libcthreads_read_write_lock_free(

         &( internal_value->read_write_lock ),

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

       "%s: unable to free read/write lock.",

       function );

      result = -1;

    }

#endif

    if( libregf_value_item_free(

         &( internal_value->value_item ),

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

       "%s: unable to free value item.",

       function );

      result = -1;

    }

    /* The io_handle and file_io_handle references are freed elsewhere

     */

    memory_free(

     internal_value );

  }

  return( result );

}

/* Determine if the value corrupted

 * Returns 1 if corrupted, 0 if not or -1 on error

 */

int libregf_value_is_corrupted(

     libregf_value_t *value,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_is_corrupted";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  internal_value = (libregf_internal_value_t *) value;

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  result = libregf_value_item_is_corrupted(

            internal_value->value_item,

            error );

  if( result == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to determine if value is corrupted.",

     function );

    result = -1;

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the offset of the value

 * Returns 1 if successful or -1 on error

 */

int libregf_value_get_offset(

     libregf_value_t *value,

     off64_t *offset,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_get_offset";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  internal_value = (libregf_internal_value_t *) value;

  if( internal_value->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid value - missing IO handle.",

     function );

    return( -1 );

  }

  if( offset == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid offset.",

     function );

    return( -1 );

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  *offset = internal_value->file_offset;

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the value name size

 * Returns 1 if successful or -1 on error

 */

int libregf_value_get_name_size(

     libregf_value_t *value,

     size_t *name_size,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_get_name_size";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  internal_value = (libregf_internal_value_t *) value;

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  if( libregf_value_item_get_name_size(

       internal_value->value_item,

       name_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve name size.",

     function );

    result = -1;

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the value name

 * Returns 1 if successful or -1 on error

 */

int libregf_value_get_name(

     libregf_value_t *value,

     uint8_t *name,

     size_t name_size,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_get_name";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  internal_value = (libregf_internal_value_t *) value;

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  if( libregf_value_item_get_name(

       internal_value->value_item,

       name,

       name_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve name.",

     function );

    result = -1;

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the UTF-8 string size of the value name

 * This function uses UTF-8 RFC 2279 (or 6-byte UTF-8) to support characters outside Unicode

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libregf_value_get_utf8_name_size(

     libregf_value_t *value,

     size_t *utf8_name_size,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_get_utf8_name_size";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  internal_value = (libregf_internal_value_t *) value;

  if( internal_value->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid value - missing IO handle.",

     function );

    return( -1 );

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  if( libregf_value_item_get_utf8_name_size(

       internal_value->value_item,

       utf8_name_size,

       internal_value->io_handle->ascii_codepage,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve UTF-8 name size.",

     function );

    result = -1;

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the UTF-8 string value of the value name

 * This function uses UTF-8 RFC 2279 (or 6-byte UTF-8) to support characters outside Unicode

 * The function uses a codepage if necessary, it uses the codepage set for the library

 * The size should include the end of string character

 * Returns 1 if successful or -1 on error

 */

int libregf_value_get_utf8_name(

     libregf_value_t *value,

     uint8_t *utf8_name,

     size_t utf8_name_size,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_get_utf8_name";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  internal_value = (libregf_internal_value_t *) value;

  if( internal_value->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid value - missing IO handle.",

     function );

    return( -1 );

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  if( libregf_value_item_get_utf8_name(

       internal_value->value_item,

       utf8_name,

       utf8_name_size,

       internal_value->io_handle->ascii_codepage,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve UTF-8 name size.",

     function );

    result = -1;

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the UTF-16 string size of the value name

 * This function uses UCS-2 (with surrogates) to support characters outside Unicode

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libregf_value_get_utf16_name_size(

     libregf_value_t *value,

     size_t *utf16_name_size,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_get_utf16_name_size";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  internal_value = (libregf_internal_value_t *) value;

  if( internal_value->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid value - missing IO handle.",

     function );

    return( -1 );

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  if( libregf_value_item_get_utf16_name_size(

       internal_value->value_item,

       utf16_name_size,

       internal_value->io_handle->ascii_codepage,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve UTF-16 name size.",

     function );

    result = -1;

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the UTF-16 string value of the value name

 * This function uses UCS-2 (with surrogates) to support characters outside Unicode

 * The function uses a codepage if necessary, it uses the codepage set for the library

 * The size should include the end of string character

 * Returns 1 if successful or -1 on error

 */

int libregf_value_get_utf16_name(

     libregf_value_t *value,

     uint16_t *utf16_name,

     size_t utf16_name_size,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_get_utf16_name";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  internal_value = (libregf_internal_value_t *) value;

  if( internal_value->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid value - missing IO handle.",

     function );

    return( -1 );

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  if( libregf_value_item_get_utf16_name(

       internal_value->value_item,

       utf16_name,

       utf16_name_size,

       internal_value->io_handle->ascii_codepage,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve UTF-16 name size.",

     function );

    result = -1;

  }

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to release read/write lock for reading.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the value type

 * Returns 1 if successful or -1 on error

 */

int libregf_value_get_value_type(

     libregf_value_t *value,

     uint32_t *value_type,

     libcerror_error_t **error )

{

  libregf_internal_value_t *internal_value = NULL;

  static char *function                    = "libregf_value_get_value_type";

  int result                               = 1;

  if( value == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid value.",

     function );

    return( -1 );

  }

  internal_value = (libregf_internal_value_t *) value;

#if defined( HAVE_LIBREGF_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_read(

       internal_value->read_write_lock,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to grab read/write lock for reading.",