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libuna_byte_stream.c
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libuna_byte_stream.c
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/*
* Byte stream functions
*
* Copyright (c) 2008-2009, Joachim Metz <forensics@hoffmannbv.nl>,
* Hoffmann Investigations.
*
* 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_byte_stream.h"
#include "libuna_definitions.h"
#include "libuna_types.h"
#include "libuna_unicode_character.h"
/* Determines the size of a byte stream from a UTF-8 string
* Returns 1 if successful or -1 on error
*/
int libuna_byte_stream_size_from_utf8(
const libuna_utf8_character_t *utf8_string,
size_t utf8_string_size,
int codepage,
size_t *byte_stream_size,
liberror_error_t **error )
{
static char *function = "libuna_byte_stream_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( byte_stream_size == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid byte stream size.",
function );
return( -1 );
}
*byte_stream_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 byte stream character bytes are required
*/
if( libuna_unicode_character_size_to_byte_stream(
unicode_character,
codepage,
byte_stream_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_OUTPUT_FAILED,
"%s: unable to unable to determine size of Unicode character in byte stream.",
function );
return( -1 );
}
}
return( 1 );
}
/* Copies a byte stream from an UTF-8 string
* Returns 1 if successful or -1 on error
*/
int libuna_byte_stream_copy_from_utf8(
uint8_t *byte_stream,
size_t byte_stream_size,
int codepage,
const libuna_utf8_character_t *utf8_string,
size_t utf8_string_size,
liberror_error_t **error )
{
static char *function = "libuna_byte_stream_copy_from_utf8";
size_t utf8_string_iterator = 0;
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( 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 string 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 string.",
function );
return( -1 );
}
/* Convert the Unicode character into a byte stream
*/
if( libuna_unicode_character_copy_to_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_OUTPUT_FAILED,
"%s: unable to copy Unicode character to byte stream.",
function );
return( -1 );
}
}
return( 1 );
}
/* Determines the size of a byte stream from a UTF-16 string
* Returns 1 if successful or -1 on error
*/
int libuna_byte_stream_size_from_utf16(
const libuna_utf16_character_t *utf16_string,
size_t utf16_string_size,
int codepage,
size_t *byte_stream_size,
liberror_error_t **error )
{
static char *function = "libuna_byte_stream_size_from_utf16";
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( byte_stream_size == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid byte stream size.",
function );
return( -1 );
}
*byte_stream_size = 0;
while( utf16_string_iterator < utf16_string_size )
{
/* Convert the UTF-16 character bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf16(
&unicode_character,
utf16_string,
utf16_string_size,
&utf16_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-16.",
function );
return( -1 );
}
/* Determine how many byte stream character bytes are required
*/
if( libuna_unicode_character_size_to_byte_stream(
unicode_character,
codepage,
byte_stream_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_OUTPUT_FAILED,
"%s: unable to unable to determine size of Unicode character in byte stream.",
function );
return( -1 );
}
}
return( 1 );
}
/* Copies a byte stream from an UTF-16 string
* Returns 1 if successful or -1 on error
*/
int libuna_byte_stream_copy_from_utf16(
uint8_t *byte_stream,
size_t byte_stream_size,
int codepage,
const libuna_utf16_character_t *utf16_string,
size_t utf16_string_size,
liberror_error_t **error )
{
static char *function = "libuna_byte_stream_copy_from_utf16";
size_t utf16_string_iterator = 0;
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 == 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 );
}
while( utf16_string_iterator < utf16_string_size )
{
/* Convert the UTF-16 string bytes into a Unicode character
*/
if( libuna_unicode_character_copy_from_utf16(
&unicode_character,
utf16_string,
utf16_string_size,
&utf16_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-16 string.",
function );
return( -1 );
}
/* Convert the Unicode character into a byte stream
*/
if( libuna_unicode_character_copy_to_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_OUTPUT_FAILED,
"%s: unable to copy Unicode character to byte stream.",
function );
return( -1 );
}
}
return( 1 );
}
/* Determines the size of a byte stream from a UTF-32 string
* Returns 1 if successful or -1 on error
*/
int libuna_byte_stream_size_from_utf32(
const libuna_utf32_character_t *utf32_string,
size_t utf32_string_size,
int codepage,
size_t *byte_stream_size,
liberror_error_t **error )
{
static char *function = "libuna_byte_stream_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( byte_stream_size == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_ARGUMENTS,
LIBERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid byte stream size.",
function );
return( -1 );
}
*byte_stream_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 byte stream character bytes are required
*/
if( libuna_unicode_character_size_to_byte_stream(
unicode_character,
codepage,
byte_stream_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_CONVERSION,
LIBERROR_CONVERSION_ERROR_OUTPUT_FAILED,
"%s: unable to unable to determine size of Unicode character in byte stream.",
function );
return( -1 );
}
}
return( 1 );
}
/* Copies a byte stream from an UTF-32 string
* Returns 1 if successful or -1 on error
*/
int libuna_byte_stream_copy_from_utf32(
uint8_t *byte_stream,
size_t byte_stream_size,
int codepage,
const libuna_utf32_character_t *utf32_string,
size_t utf32_string_size,
liberror_error_t **error )
{
static char *function = "libuna_byte_stream_copy_from_utf32";
size_t utf32_string_iterator = 0;
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( 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 string 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 string.",
function );
return( -1 );
}
/* Convert the Unicode character into a byte stream
*/
if( libuna_unicode_character_copy_to_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_OUTPUT_FAILED,
"%s: unable to copy Unicode character to byte stream.",
function );
return( -1 );
}
}
return( 1 );
}

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