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libuna_utf16_string.c
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libuna_utf16_string.c
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/*
* UTF-16 string functions
*
* Copyright (c) 2008-2009, Joachim Metz <forensics@hoffmannbv.nl>,
* Hoffmann Investigations. All rights reserved.
*
* Refer to AUTHORS for acknowledgements.
*
* This software 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 software 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 software. If not, see <http://www.gnu.org/licenses/>.
*/
#include <common.h>
#include <types.h>
#include <liberror.h>
#include "libuna_definitions.h"
#include "libuna_types.h"
#include "libuna_unicode_character.h"
#include "libuna_utf16_string.h"
/* Determines the size of a UTF-16 string from a byte stream
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_size_from_byte_stream(
const uint8_t *byte_stream,
size_t byte_stream_size,
int codepage,
size_t *utf16_string_size,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_size_from_byte_stream";
size_t byte_stream_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
if( byte_stream == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid byte stream.",
function );
return( -1 );
}
if( byte_stream_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid byte stream size value exceeds maximum.",
function );
return( -1 );
}
if( utf16_string_size == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string size.",
function );
return( -1 );
}
*utf16_string_size = 0;
/* Check if the byte stream is terminated with a zero byte
*/
if( byte_stream[ byte_stream_size - 1 ] != 0 )
{
*utf16_string_size += 1;
}
while( byte_stream_iterator < byte_stream_size )
{
/* Convert the byte stream bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_byte_stream(
&unicode_character,
byte_stream,
byte_stream_size,
&byte_stream_iterator,
codepage,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from byte stream.",
function );
return( -1 );
}
/* Determine how many UTF-16 character byte words are required
*/
if( libuna_unicode_character_size_to_utf16(
unicode_character,
utf16_string_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to unable to determine size of Unicode character in UTF-16.",
function );
return( -1 );
}
}
return( 1 );
}
/* Copies an UTF-16 string from a byte stream
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_copy_from_byte_stream(
libuna_utf16_character_t *utf16_string,
size_t utf16_string_size,
const uint8_t *byte_stream,
size_t byte_stream_size,
int codepage,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_copy_from_byte_stream";
size_t utf16_string_iterator = 0;
size_t byte_stream_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
uint8_t zero_byte = 0;
if( utf16_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string.",
function );
return( -1 );
}
if( utf16_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-16 string size value exceeds maximum.",
function );
return( -1 );
}
if( byte_stream == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid byte stream.",
function );
return( -1 );
}
if( byte_stream_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid byte stream size value exceeds maximum.",
function );
return( -1 );
}
/* Check if the byte stream is terminated with zero bytes
*/
if( byte_stream[ byte_stream_size - 1 ] != 0 )
{
zero_byte = 1;
}
while( byte_stream_iterator < byte_stream_size )
{
/* Convert the byte stream bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_byte_stream(
&unicode_character,
byte_stream,
byte_stream_size,
&byte_stream_iterator,
codepage,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from byte stream.",
function );
return( -1 );
}
/* Convert the Unicode character into UTF-16 character byte words
*/
if( libuna_unicode_character_copy_to_utf16(
unicode_character,
utf16_string,
utf16_string_size,
&utf16_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_OUTPUT_FAILED,
"%s: unable to copy Unicode character to UTF-16.",
function );
return( -1 );
}
}
if( zero_byte != 0 )
{
if( utf16_string_iterator >= utf16_string_size )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: UTF-16 string too small.",
function );
return( -1 );
}
utf16_string[ utf16_string_iterator++ ] = 0;
}
return( 1 );
}
/* Determines the size of a UTF-16 string from a UTF-8 string
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_size_from_utf8(
const libuna_utf8_character_t *utf8_string,
size_t utf8_string_size,
size_t *utf16_string_size,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_size_from_utf8";
size_t utf8_string_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
if( utf8_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-8 string.",
function );
return( -1 );
}
if( utf8_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-8 string size value exceeds maximum.",
function );
return( -1 );
}
if( utf16_string_size == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string size.",
function );
return( -1 );
}
*utf16_string_size = 0;
while( utf8_string_iterator < utf8_string_size )
{
/* Convert the UTF-8 character bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf8(
&unicode_character,
utf8_string,
utf8_string_size,
&utf8_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-8.",
function );
return( -1 );
}
/* Determine how many UTF-16 character bytes are required
*/
if( libuna_unicode_character_size_to_utf16(
unicode_character,
utf16_string_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to unable to determine size of Unicode character in UTF-16.",
function );
return( -1 );
}
}
return( 1 );
}
/* Copies an UTF-16 string from an UTF-8 string
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_copy_from_utf8(
libuna_utf16_character_t *utf16_string,
size_t utf16_string_size,
const libuna_utf8_character_t *utf8_string,
size_t utf8_string_size,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_copy_from_utf8";
size_t utf8_string_iterator = 0;
size_t utf16_string_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
if( utf16_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string.",
function );
return( -1 );
}
if( utf16_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-16 string size value exceeds maximum.",
function );
return( -1 );
}
if( utf8_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-8 string.",
function );
return( -1 );
}
if( utf8_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-8 string size value exceeds maximum.",
function );
return( -1 );
}
while( utf8_string_iterator < utf8_string_size )
{
/* Convert the UTF-8 character bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf8(
&unicode_character,
utf8_string,
utf8_string_size,
&utf8_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-8.",
function );
return( -1 );
}
/* Convert the Unicode character into UTF-16 character bytes
*/
if( libuna_unicode_character_copy_to_utf16(
unicode_character,
utf16_string,
utf16_string_size,
&utf16_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_OUTPUT_FAILED,
"%s: unable to copy Unicode character to UTF-16.",
function );
return( -1 );
}
}
return( 1 );
}
/* Determines the size of a UTF-16 string from a UTF-8 stream
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_size_from_utf8_stream(
const uint8_t *utf8_stream,
size_t utf8_stream_size,
size_t *utf16_string_size,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_size_from_utf8_stream";
size_t utf8_stream_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
if( utf8_stream == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-8 stream.",
function );
return( -1 );
}
if( utf8_stream_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-8 stream size value exceeds maximum.",
function );
return( -1 );
}
if( utf8_stream_size < 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-8 stream bytes.",
function );
return( -1 );
}
if( utf16_string_size == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string size.",
function );
return( -1 );
}
*utf16_string_size = 0;
/* Check if UTF-8 stream starts with a byte order mark (BOM)
*/
if( utf8_stream_size >= 3 )
{
if( ( utf8_stream[ 0 ] == 0x0ef )
&& ( utf8_stream[ 1 ] == 0x0bb )
&& ( utf8_stream[ 2 ] == 0x0bf ) )
{
utf8_stream_iterator += 3;
}
}
/* Check if the UTF-8 stream is terminated with a zero byte
*/
if( utf8_stream[ utf8_stream_size - 1 ] != 0 )
{
*utf16_string_size += 1;
}
while( utf8_stream_iterator < utf8_stream_size )
{
/* Convert the UTF-8 stream bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf8(
&unicode_character,
utf8_stream,
utf8_stream_size,
&utf8_stream_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-8 stream.",
function );
return( -1 );
}
/* Determine how many UTF-16 character bytes are required
*/
if( libuna_unicode_character_size_to_utf16(
unicode_character,
utf16_string_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to unable to determine size of Unicode character in UTF-16.",
function );
return( -1 );
}
}
return( 1 );
}
/* Copies an UTF-16 string from an UTF-8 stream
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_copy_from_utf8_stream(
libuna_utf16_character_t *utf16_string,
size_t utf16_string_size,
const uint8_t *utf8_stream,
size_t utf8_stream_size,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_copy_from_utf8_stream";
size_t utf16_string_iterator = 0;
size_t utf8_stream_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
uint8_t zero_byte = 0;
if( utf16_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string.",
function );
return( -1 );
}
if( utf16_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-16 string size value exceeds maximum.",
function );
return( -1 );
}
if( utf8_stream == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-8 stream.",
function );
return( -1 );
}
if( utf8_stream_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-8 stream size value exceeds maximum.",
function );
return( -1 );
}
if( utf8_stream_size < 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-8 stream bytes.",
function );
return( -1 );
}
/* Check if UTF-8 stream starts with a byte order mark (BOM)
*/
if( utf8_stream_size >= 3 )
{
if( ( utf8_stream[ 0 ] == 0x0ef )
&& ( utf8_stream[ 1 ] == 0x0bb )
&& ( utf8_stream[ 2 ] == 0x0bf ) )
{
utf8_stream_iterator += 3;
}
}
/* Check if the UTF-8 stream is terminated with zero bytes
*/
if( utf8_stream[ utf8_stream_size - 1 ] != 0 )
{
zero_byte = 1;
}
while( utf8_stream_iterator < utf8_stream_size )
{
/* Convert the UTF-8 stream bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf8(
&unicode_character,
utf8_stream,
utf8_stream_size,
&utf8_stream_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-8 stream.",
function );
return( -1 );
}
/* Convert the Unicode character into UTF-16 character bytes
*/
if( libuna_unicode_character_copy_to_utf16(
unicode_character,
utf16_string,
utf16_string_size,
&utf16_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_OUTPUT_FAILED,
"%s: unable to copy Unicode character to UTF-16.",
function );
return( -1 );
}
}
if( zero_byte != 0 )
{
if( utf16_string_iterator >= utf16_string_size )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: UTF-16 string too small.",
function );
return( -1 );
}
utf16_string[ utf16_string_iterator++ ] = 0;
}
return( 1 );
}
/* Determines the size of a UTF-16 string from a UTF-16 stream
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_size_from_utf16_stream(
const uint8_t *utf16_stream,
size_t utf16_stream_size,
uint8_t byte_order,
size_t *utf16_string_size,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_size_from_utf16_stream";
size_t utf16_stream_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
uint8_t read_byte_order = 0;
if( utf16_stream == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 stream.",
function );
return( -1 );
}
if( utf16_stream_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-16 stream size value exceeds maximum.",
function );
return( -1 );
}
if( ( utf16_stream_size < 2 )
|| ( ( utf16_stream_size % 2 ) != 0 ) )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-16 stream bytes.",
function );
return( -1 );
}
if( ( byte_order != 0 )
&& ( byte_order != LIBUNA_ENDIAN_BIG )
&& ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported byte order.",
function );
return( -1 );
}
if( utf16_string_size == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string size.",
function );
return( -1 );
}
*utf16_string_size = 0;
/* Check if UTF-16 stream is in big or little endian
*/
if( ( utf16_stream[ 0 ] == 0x0ff )
&& ( utf16_stream[ 1 ] == 0x0fe ) )
{
read_byte_order = LIBUNA_ENDIAN_LITTLE;
utf16_stream_iterator = 2;
}
else if( ( utf16_stream[ 0 ] == 0x0fe )
&& ( utf16_stream[ 1 ] == 0x0ff ) )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
utf16_stream_iterator = 2;
}
else
{
if( ( utf16_stream[ 0 ] == 0 )
&& ( utf16_stream[ 1 ] != 0 ) )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
}
else if( ( utf16_stream[ 0 ] != 0 )
&& ( utf16_stream[ 1 ] == 0 ) )
{
read_byte_order = LIBUNA_ENDIAN_LITTLE;
}
else if( byte_order == 0 )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
}
else
{
read_byte_order = byte_order;
}
utf16_stream_iterator = 0;
}
/* Check if the UTF-16 stream is terminated with zero bytes
*/
if( ( utf16_stream[ utf16_stream_size - 2 ] != 0 )
|| ( utf16_stream[ utf16_stream_size - 1 ] != 0 ) )
{
*utf16_string_size += 1;
}
while( ( utf16_stream_iterator + 1 ) < utf16_stream_size )
{
/* Convert the UTF-16 stream bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf16_stream(
&unicode_character,
utf16_stream,
utf16_stream_size,
&utf16_stream_iterator,
read_byte_order,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-16 stream.",
function );
return( -1 );
}
/* Determine how many UTF-16 character bytes are required
*/
if( libuna_unicode_character_size_to_utf16(
unicode_character,
utf16_string_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to unable to determine size of Unicode character in UTF-16.",
function );
return( -1 );
}
}
if( utf16_stream_iterator != utf16_stream_size )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-16 stream bytes.",
function );
return( -1 );
}
return( 1 );
}
/* Copies an UTF-16 string from an UTF-16 stream
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_copy_from_utf16_stream(
libuna_utf16_character_t *utf16_string,
size_t utf16_string_size,
const uint8_t *utf16_stream,
size_t utf16_stream_size,
uint8_t byte_order,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_copy_from_utf16_stream";
size_t utf16_string_iterator = 0;
size_t utf16_stream_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
uint8_t read_byte_order = 0;
uint8_t zero_byte = 0;
if( utf16_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string.",
function );
return( -1 );
}
if( utf16_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-16 string size value exceeds maximum.",
function );
return( -1 );
}
if( utf16_stream == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 stream.",
function );
return( -1 );
}
if( utf16_stream_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-16 stream size value exceeds maximum.",
function );
return( -1 );
}
if( ( utf16_stream_size < 2 )
|| ( ( utf16_stream_size % 2 ) != 0 ) )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-16 stream bytes.",
function );
return( -1 );
}
if( ( byte_order != 0 )
&& ( byte_order != LIBUNA_ENDIAN_BIG )
&& ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported byte order.",
function );
return( -1 );
}
/* Check if UTF-16 stream is in big or little endian
*/
if( ( utf16_stream[ 0 ] == 0x0ff )
&& ( utf16_stream[ 1 ] == 0x0fe ) )
{
read_byte_order = LIBUNA_ENDIAN_LITTLE;
utf16_stream_iterator = 2;
}
else if( ( utf16_stream[ 0 ] == 0x0fe )
&& ( utf16_stream[ 1 ] == 0x0ff ) )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
utf16_stream_iterator = 2;
}
else
{
if( ( utf16_stream[ 0 ] == 0 )
&& ( utf16_stream[ 1 ] != 0 ) )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
}
else if( ( utf16_stream[ 0 ] != 0 )
&& ( utf16_stream[ 1 ] == 0 ) )
{
read_byte_order = LIBUNA_ENDIAN_LITTLE;
}
else if( byte_order == 0 )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
}
else
{
read_byte_order = byte_order;
}
utf16_stream_iterator = 0;
}
/* Check if the UTF-16 stream is terminated with zero bytes
*/
if( ( utf16_stream[ utf16_stream_size - 2 ] != 0 )
|| ( utf16_stream[ utf16_stream_size - 1 ] != 0 ) )
{
zero_byte = 1;
}
while( ( utf16_stream_iterator + 1 ) < utf16_stream_size )
{
/* Convert the UTF-16 stream bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf16_stream(
&unicode_character,
utf16_stream,
utf16_stream_size,
&utf16_stream_iterator,
read_byte_order,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-16 stream.",
function );
return( -1 );
}
/* Convert the Unicode character into UTF-16 character bytes
*/
if( libuna_unicode_character_copy_to_utf16(
unicode_character,
utf16_string,
utf16_string_size,
&utf16_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_OUTPUT_FAILED,
"%s: unable to copy Unicode character to UTF-16.",
function );
return( -1 );
}
}
if( utf16_stream_iterator != utf16_stream_size )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-16 stream bytes.",
function );
return( -1 );
}
if( zero_byte != 0 )
{
if( utf16_string_iterator >= utf16_string_size )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: UTF-16 string too small.",
function );
return( -1 );
}
utf16_string[ utf16_string_iterator++ ] = 0;
}
return( 1 );
}
/* Determines the size of a UTF-16 string from a UTF-32 string
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_size_from_utf32(
const libuna_utf32_character_t *utf32_string,
size_t utf32_string_size,
size_t *utf16_string_size,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_size_from_utf32";
size_t utf32_string_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
if( utf32_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-32 string.",
function );
return( -1 );
}
if( utf32_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-32 string size value exceeds maximum.",
function );
return( -1 );
}
if( utf16_string_size == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string size.",
function );
return( -1 );
}
*utf16_string_size = 0;
while( utf32_string_iterator < utf32_string_size )
{
/* Convert the UTF-32 character bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf32(
&unicode_character,
utf32_string,
utf32_string_size,
&utf32_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-32.",
function );
return( -1 );
}
/* Determine how many UTF-16 character bytes are required
*/
if( libuna_unicode_character_size_to_utf16(
unicode_character,
utf16_string_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to unable to determine size of Unicode character in UTF-16.",
function );
return( -1 );
}
}
return( 1 );
}
/* Copies an UTF-16 string from an UTF-32 string
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_copy_from_utf32(
libuna_utf16_character_t *utf16_string,
size_t utf16_string_size,
const libuna_utf32_character_t *utf32_string,
size_t utf32_string_size,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_copy_from_utf32";
size_t utf16_string_iterator = 0;
size_t utf32_string_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
if( utf16_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string.",
function );
return( -1 );
}
if( utf16_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-16 string size value exceeds maximum.",
function );
return( -1 );
}
if( utf32_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-32 string.",
function );
return( -1 );
}
if( utf32_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-32 string size value exceeds maximum.",
function );
return( -1 );
}
while( utf32_string_iterator < utf32_string_size )
{
/* Convert the UTF-32 character bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf32(
&unicode_character,
utf32_string,
utf32_string_size,
&utf32_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-32.",
function );
return( -1 );
}
/* Convert the Unicode character into UTF-16 character bytes
*/
if( libuna_unicode_character_copy_to_utf16(
unicode_character,
utf16_string,
utf16_string_size,
&utf16_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_OUTPUT_FAILED,
"%s: unable to copy Unicode character to UTF-16.",
function );
return( -1 );
}
}
return( 1 );
}
/* Determines the size of a UTF-16 string from a UTF-32 stream
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_size_from_utf32_stream(
const uint8_t *utf32_stream,
size_t utf32_stream_size,
uint8_t byte_order,
size_t *utf16_string_size,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_size_from_utf32_stream";
size_t utf32_stream_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
uint8_t read_byte_order = 0;
if( utf32_stream == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-32 stream.",
function );
return( -1 );
}
if( utf32_stream_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-32 stream size value exceeds maximum.",
function );
return( -1 );
}
if( ( utf32_stream_size < 4 )
|| ( ( utf32_stream_size % 4 ) != 0 ) )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-32 stream bytes.",
function );
return( -1 );
}
if( ( byte_order != 0 )
&& ( byte_order != LIBUNA_ENDIAN_BIG )
&& ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported byte order.",
function );
return( -1 );
}
if( utf16_string_size == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string size.",
function );
return( -1 );
}
*utf16_string_size = 0;
/* Check if UTF-32 stream is in big or little endian
*/
if( ( utf32_stream[ 0 ] == 0x00 )
&& ( utf32_stream[ 1 ] == 0x00 )
&& ( utf32_stream[ 2 ] == 0xfe )
&& ( utf32_stream[ 3 ] == 0xff ) )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
utf32_stream_iterator = 4;
}
else if( ( utf32_stream[ 0 ] == 0xff )
&& ( utf32_stream[ 1 ] == 0xfe )
&& ( utf32_stream[ 2 ] == 0x00 )
&& ( utf32_stream[ 3 ] == 0x00 ) )
{
read_byte_order = LIBUNA_ENDIAN_LITTLE;
utf32_stream_iterator = 4;
}
else
{
if( ( utf32_stream[ 0 ] == 0 )
&& ( utf32_stream[ 1 ] == 0 )
&& ( utf32_stream[ 2 ] == 0 )
&& ( utf32_stream[ 3 ] != 0 ) )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
}
else if( ( utf32_stream[ 0 ] != 0 )
&& ( utf32_stream[ 1 ] == 0 )
&& ( utf32_stream[ 2 ] == 0 )
&& ( utf32_stream[ 3 ] == 0 ) )
{
read_byte_order = LIBUNA_ENDIAN_LITTLE;
}
else if( byte_order == 0 )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
}
else
{
read_byte_order = byte_order;
}
utf32_stream_iterator = 0;
}
/* Check if the UTF-32 stream is terminated with zero bytes
*/
if( ( utf32_stream[ utf32_stream_size - 4 ] != 0 )
|| ( utf32_stream[ utf32_stream_size - 3 ] != 0 )
|| ( utf32_stream[ utf32_stream_size - 2 ] != 0 )
|| ( utf32_stream[ utf32_stream_size - 1 ] != 0 ) )
{
*utf16_string_size += 1;
}
while( ( utf32_stream_iterator + 1 ) < utf32_stream_size )
{
/* Convert the UTF-32 stream bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf32_stream(
&unicode_character,
utf32_stream,
utf32_stream_size,
&utf32_stream_iterator,
read_byte_order,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-32 stream.",
function );
return( -1 );
}
/* Determine how many UTF-16 character bytes are required
*/
if( libuna_unicode_character_size_to_utf16(
unicode_character,
utf16_string_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to unable to determine size of Unicode character in UTF-16.",
function );
return( -1 );
}
}
if( utf32_stream_iterator != utf32_stream_size )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-32 stream bytes.",
function );
return( -1 );
}
return( 1 );
}
/* Copies an UTF-16 string from an UTF-32 stream
* Returns 1 if successful or -1 on error
*/
int libuna_utf16_string_copy_from_utf32_stream(
libuna_utf16_character_t *utf16_string,
size_t utf16_string_size,
const uint8_t *utf32_stream,
size_t utf32_stream_size,
uint8_t byte_order,
liberror_error_t **error )
{
static char *function = "libuna_utf16_string_copy_from_utf32_stream";
size_t utf16_string_iterator = 0;
size_t utf32_stream_iterator = 0;
libuna_unicode_character_t unicode_character = 0;
uint8_t read_byte_order = 0;
uint8_t zero_byte = 0;
if( utf16_string == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-16 string.",
function );
return( -1 );
}
if( utf16_string_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-16 string size value exceeds maximum.",
function );
return( -1 );
}
if( utf32_stream == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid UTF-32 stream.",
function );
return( -1 );
}
if( utf32_stream_size > (size_t) SSIZE_MAX )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: invalid UTF-32 stream size value exceeds maximum.",
function );
return( -1 );
}
if( ( utf32_stream_size < 4 )
|| ( ( utf32_stream_size % 4 ) != 0 ) )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-32 stream bytes.",
function );
return( -1 );
}
if( ( byte_order != 0 )
&& ( byte_order != LIBUNA_ENDIAN_BIG )
&& ( byte_order != LIBUNA_ENDIAN_LITTLE ) )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported byte order.",
function );
return( -1 );
}
/* Check if UTF-32 stream is in big or little endian
*/
if( ( utf32_stream[ 0 ] == 0x00 )
&& ( utf32_stream[ 1 ] == 0x00 )
&& ( utf32_stream[ 2 ] == 0xfe )
&& ( utf32_stream[ 3 ] == 0xff ) )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
utf32_stream_iterator = 4;
}
else if( ( utf32_stream[ 0 ] == 0xff )
&& ( utf32_stream[ 1 ] == 0xfe )
&& ( utf32_stream[ 2 ] == 0x00 )
&& ( utf32_stream[ 3 ] == 0x00 ) )
{
read_byte_order = LIBUNA_ENDIAN_LITTLE;
utf32_stream_iterator = 4;
}
else
{
if( ( utf32_stream[ 0 ] == 0 )
&& ( utf32_stream[ 1 ] == 0 )
&& ( utf32_stream[ 2 ] == 0 )
&& ( utf32_stream[ 3 ] != 0 ) )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
}
else if( ( utf32_stream[ 0 ] != 0 )
&& ( utf32_stream[ 1 ] == 0 )
&& ( utf32_stream[ 2 ] == 0 )
&& ( utf32_stream[ 3 ] == 0 ) )
{
read_byte_order = LIBUNA_ENDIAN_LITTLE;
}
else if( byte_order == 0 )
{
read_byte_order = LIBUNA_ENDIAN_BIG;
}
else
{
read_byte_order = byte_order;
}
utf32_stream_iterator = 0;
}
/* Check if the UTF-32 stream is terminated with zero bytes
*/
if( ( utf32_stream[ utf32_stream_size - 4 ] != 0 )
|| ( utf32_stream[ utf32_stream_size - 3 ] != 0 )
|| ( utf32_stream[ utf32_stream_size - 2 ] != 0 )
|| ( utf32_stream[ utf32_stream_size - 1 ] != 0 ) )
{
zero_byte = 1;
}
while( ( utf32_stream_iterator + 1 ) < utf32_stream_size )
{
/* Convert the UTF-32 stream bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf32_stream(
&unicode_character,
utf32_stream,
utf32_stream_size,
&utf32_stream_iterator,
read_byte_order,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_INPUT_FAILED,
"%s: unable to copy Unicode character from UTF-32 stream.",
function );
return( -1 );
}
/* Convert the Unicode character into UTF-16 character bytes
*/
if( libuna_unicode_character_copy_to_utf16(
unicode_character,
utf16_string,
utf16_string_size,
&utf16_string_iterator,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_OUTPUT_FAILED,
"%s: unable to copy Unicode character to UTF-16.",
function );
return( -1 );
}
}
if( utf32_stream_iterator != utf32_stream_size )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: missing UTF-32 stream bytes.",
function );
return( -1 );
}
if( zero_byte != 0 )
{
if( utf16_string_iterator >= utf16_string_size )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
"%s: UTF-16 string too small.",
function );
return( -1 );
}
utf16_string[ utf16_string_iterator++ ] = 0;
}
return( 1 );
}

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