/*

 * Key functions

 *

 * Copyright (C) 2013-2024, 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 <memory.h>

#include <types.h>

#include "libcreg_definitions.h"

#include "libcreg_io_handle.h"

#include "libcreg_key.h"

#include "libcreg_key_descriptor.h"

#include "libcreg_key_item.h"

#include "libcreg_key_name_entry.h"

#include "libcreg_key_navigation.h"

#include "libcreg_key_tree.h"

#include "libcreg_libbfio.h"

#include "libcreg_libcerror.h"

#include "libcreg_libcthreads.h"

#include "libcreg_libuna.h"

#include "libcreg_types.h"

#include "libcreg_value.h"

#include "libcreg_value_entry.h"

#include "libcreg_value_type.h"

/* Creates a key

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

 * Returns 1 if successful or -1 on error

 */

int libcreg_key_initialize(

     libcreg_key_t **key,

     libcreg_io_handle_t *io_handle,

     libbfio_handle_t *file_io_handle,

     libcreg_key_navigation_t *key_navigation,

     uint32_t key_offset,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_initialize";

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  if( *key != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

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

     function );

    return( -1 );

  }

  internal_key = memory_allocate_structure(

                  libcreg_internal_key_t );

  if( internal_key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

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

     function );

    goto on_error;

  }

  if( memory_set(

       internal_key,

       0,

       sizeof( libcreg_internal_key_t ) ) == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_MEMORY,

     LIBCERROR_MEMORY_ERROR_SET_FAILED,

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

     function );

    memory_free(

     internal_key );

    return( -1 );

  }

  if( libcreg_key_item_initialize(

       &( internal_key->key_item ),

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to create key item.",

     function );

    goto on_error;

  }

  if( libcreg_key_item_read(

       internal_key->key_item,

       file_io_handle,

       key_navigation,

       (off64_t) key_offset,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_IO,

     LIBCERROR_IO_ERROR_READ_FAILED,

     "%s: unable to read key item at offset: %" PRIi64 " (0x%08" PRIx64 ").",

     function,

     key_offset,

     key_offset );

    goto on_error;

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_initialize(

       &( internal_key->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_key->file_io_handle = file_io_handle;

  internal_key->io_handle      = io_handle;

  internal_key->key_navigation = key_navigation;

  internal_key->key_offset     = key_offset;

  *key = (libcreg_key_t *) internal_key;

  return( 1 );

on_error:

  if( internal_key != NULL )

  {

    if( internal_key->key_item != NULL )

    {

      libcreg_key_item_free(

       &( internal_key->key_item ),

       NULL );

    }

    memory_free(

     internal_key );

  }

  return( -1 );

}

/* Frees a key

 * Returns 1 if successful or -1 on error

 */

int libcreg_key_free(

     libcreg_key_t **key,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_free";

  int result                           = 1;

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  if( *key != NULL )

  {

    internal_key = (libcreg_internal_key_t *) *key;

    *key         = NULL;

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

    if( libcthreads_read_write_lock_free(

         &( internal_key->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

    /* The io_handle and file_io_handle references are freed elsewhere

     */

    if( libcreg_key_item_free(

         &( internal_key->key_item ),

         error ) != 1 )

    {

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_FINALIZE_FAILED,

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

       function );

      result = -1;

    }

    memory_free(

     internal_key );

  }

  return( result );

}

/* Determine if the key corrupted

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

 */

int libcreg_key_is_corrupted(

     libcreg_key_t *key,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_is_corrupted";

  int result                           = 0;

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  internal_key = (libcreg_internal_key_t *) key;

  if( internal_key->key_item == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid key - key item.",

     function );

    return( -1 );

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  result = libcreg_key_item_is_corrupted(

            internal_key->key_item,

            error );

  if( result == -1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to determine if key item is corruped.",

     function );

    result = -1;

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the offset

 * Returns 1 if successful or -1 on error

 */

int libcreg_key_get_offset(

     libcreg_key_t *key,

     off64_t *offset,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_get_offset";

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  internal_key = (libcreg_internal_key_t *) key;

  if( internal_key->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

     "%s: invalid key - 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_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  /* The offset is relative from the start of the data blocks list

   * and points to the start of the corresponding key name entry

   */

  *offset = internal_key->key_offset + internal_key->io_handle->data_blocks_list_offset + 4;

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  return( 1 );

}

/* Retrieves the key name size

 * Returns 1 if successful or -1 on error

 */

int libcreg_key_get_name_size(

     libcreg_key_t *key,

     size_t *string_size,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_get_name_size";

  int result                           = 1;

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  internal_key = (libcreg_internal_key_t *) key;

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  if( libcreg_key_item_get_name_size(

       internal_key->key_item,

       string_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_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the key name

 * Returns 1 if successful or -1 on error

 */

int libcreg_key_get_name(

     libcreg_key_t *key,

     uint8_t *string,

     size_t string_size,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_get_name";

  int result                           = 1;

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  internal_key = (libcreg_internal_key_t *) key;

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  if( libcreg_key_item_get_name(

       internal_key->key_item,

       string,

       string_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_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

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

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libcreg_key_get_utf8_name_size(

     libcreg_key_t *key,

     size_t *utf8_string_size,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_get_utf8_name_size";

  int result                           = 1;

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  internal_key = (libcreg_internal_key_t *) key;

  if( internal_key->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

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

     function );

    return( -1 );

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  if( libcreg_key_item_get_utf8_name_size(

       internal_key->key_item,

       utf8_string_size,

       internal_key->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_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

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

 * 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 libcreg_key_get_utf8_name(

     libcreg_key_t *key,

     uint8_t *utf8_string,

     size_t utf8_string_size,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_get_utf8_name";

  int result                           = 1;

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  internal_key = (libcreg_internal_key_t *) key;

  if( internal_key->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

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

     function );

    return( -1 );

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  if( libcreg_key_item_get_utf8_name(

       internal_key->key_item,

       utf8_string,

       utf8_string_size,

       internal_key->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_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

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

 * The returned size includes the end of string character

 * Returns 1 if successful or -1 on error

 */

int libcreg_key_get_utf16_name_size(

     libcreg_key_t *key,

     size_t *utf16_string_size,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_get_utf16_name_size";

  int result                           = 1;

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  internal_key = (libcreg_internal_key_t *) key;

  if( internal_key->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

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

     function );

    return( -1 );

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  if( libcreg_key_item_get_utf16_name_size(

       internal_key->key_item,

       utf16_string_size,

       internal_key->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_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

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

 * 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 libcreg_key_get_utf16_name(

     libcreg_key_t *key,

     uint16_t *utf16_string,

     size_t utf16_string_size,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_value_get_utf16_name";

  int result                           = 1;

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",

     function );

    return( -1 );

  }

  internal_key = (libcreg_internal_key_t *) key;

  if( internal_key->io_handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,

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

     function );

    return( -1 );

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_grab_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  if( libcreg_key_item_get_utf16_name(

       internal_key->key_item,

       utf16_string,

       utf16_string_size,

       internal_key->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.",

     function );

    result = -1;

  }

#if defined( HAVE_LIBCREG_MULTI_THREAD_SUPPORT )

  if( libcthreads_read_write_lock_release_for_write(

       internal_key->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 writing.",

     function );

    return( -1 );

  }

#endif

  return( result );

}

/* Retrieves the number of values

 * Returns 1 if successful or -1 on error

 */

int libcreg_key_get_number_of_values(

     libcreg_key_t *key,

     int *number_of_values,

     libcerror_error_t **error )

{

  libcreg_internal_key_t *internal_key = NULL;

  static char *function                = "libcreg_key_get_number_of_values";

  int result                           = 1;

  if( key == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid key.",