Page MenuHomePhabricator
Files F7687391

ewf_test_write_chunk.c
No OneTemporary
Actions

Size
11 KB
Referenced Files
None
Subscribers
None

ewf_test_write_chunk.c
View Options

/*
* Expert Witness Compression Format (EWF) library write chunktesting program
*
* Copyright (c) 2006-2012, Joachim Metz <jbmetz@users.sourceforge.net>
*
* 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 <memory.h>
#include <libcstring.h>
#include <liberror.h>
#if defined( HAVE_STDLIB_H ) || defined( WINAPI )
#include <stdlib.h>
#endif
#include <stdio.h>
#include <libsystem.h>
#include "ewf_test_definitions.h"
#include "ewf_test_libewf.h"
/* Tests writing data of media size to EWF file(s) with a maximum segment size
* Return 1 if successful, 0 if not or -1 on error
*/
int ewf_test_write_chunk(
const char *filename,
size64_t media_size,
size64_t maximum_segment_size,
int8_t compression_level,
uint8_t compression_flags,
liberror_error_t **error )
{
libewf_handle_t *handle = NULL;
uint8_t *checksum_buffer = NULL;
uint8_t *chunk_buffer = NULL;
uint8_t *compressed_chunk_buffer = NULL;
static char *function = "ewf_test_write_chunk";
size_t chunk_buffer_size = 0;
size_t compressed_chunk_buffer_size = 0;
ssize_t process_count = 0;
ssize_t write_count = 0;
uint32_t chunk_checksum = 0;
uint32_t sectors_per_chunk = 0;
int8_t is_compressed = 0;
int8_t process_checksum = 0;
int sector_iterator = 0;
if( libewf_handle_initialize(
&handle,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
"%s: unable to create handle.",
function );
goto on_error;
}
#if defined( LIBCSTRING_HAVE_WIDE_SYSTEM_CHARACTER )
if( libewf_handle_open_wide(
handle,
(wchar_t * const *) &filename,
1,
LIBEWF_OPEN_WRITE,
error ) != 1 )
#else
if( libewf_handle_open(
handle,
(char * const *) &filename,
1,
LIBEWF_OPEN_WRITE,
error ) != 1 )
#endif
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_IO,
LIBERROR_IO_ERROR_OPEN_FAILED,
"%s: unable to open handle.",
function );
goto on_error;
}
if( media_size > 0 )
{
if( libewf_handle_set_media_size(
handle,
media_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable set media size.",
function );
goto on_error;
}
}
if( maximum_segment_size > 0 )
{
if( libewf_handle_set_maximum_segment_size(
handle,
maximum_segment_size,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable set maximum segment size.",
function );
goto on_error;
}
}
if( libewf_handle_set_compression_values(
handle,
compression_level,
compression_flags,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable set compression values.",
function );
goto on_error;
}
sectors_per_chunk = 64;
if( libewf_handle_set_sectors_per_chunk(
handle,
sectors_per_chunk,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable set sectors per chunk.",
function );
goto on_error;
}
chunk_buffer_size = sectors_per_chunk * 512;
/* Use the chunck buffer also as checksum buffer
*/
chunk_buffer = (uint8_t *) memory_allocate(
sizeof( uint8_t ) * ( chunk_buffer_size + 4 ) );
/* The compressed data can become larger than the uncompressed data
*/
compressed_chunk_buffer_size = chunk_buffer_size * 2;
compressed_chunk_buffer = (uint8_t *) memory_allocate(
sizeof( uint8_t ) * compressed_chunk_buffer_size );
if( chunk_buffer != NULL )
{
checksum_buffer = &( chunk_buffer[ chunk_buffer_size - 1 ] );
}
for( sector_iterator = 0;
sector_iterator < 26;
sector_iterator++ )
{
if( memory_set(
chunk_buffer,
(int) 'A' + sector_iterator,
chunk_buffer_size ) == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_MEMORY,
LIBERROR_MEMORY_ERROR_SET_FAILED,
"%s: unable set value in chunk buffer.",
function );
goto on_error;
}
process_count = libewf_handle_prepare_write_chunk(
handle,
chunk_buffer,
chunk_buffer_size,
compressed_chunk_buffer,
&compressed_chunk_buffer_size,
&is_compressed,
&chunk_checksum,
&process_checksum,
error );
if( process_count == -1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable to prepare chunk buffer before writing.",
function );
goto on_error;
}
if( is_compressed == 0 )
{
write_count = libewf_handle_write_chunk(
handle,
chunk_buffer,
chunk_buffer_size,
chunk_buffer_size,
is_compressed,
checksum_buffer,
chunk_checksum,
process_checksum,
error );
}
else
{
write_count = libewf_handle_write_chunk(
handle,
compressed_chunk_buffer,
compressed_chunk_buffer_size,
chunk_buffer_size,
is_compressed,
checksum_buffer,
chunk_checksum,
process_checksum,
error );
}
if( write_count < 0 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_IO,
LIBERROR_IO_ERROR_WRITE_FAILED,
"%s: unable write chunk of size: %" PRIzd ".",
function,
chunk_buffer_size );
goto on_error;
}
if( media_size > (size64_t) chunk_buffer_size )
{
media_size -= chunk_buffer_size;
}
else if( media_size > 0 )
{
media_size = 0;
}
if( media_size == 0 )
{
break;
}
}
memory_free(
compressed_chunk_buffer );
compressed_chunk_buffer = NULL;
memory_free(
chunk_buffer );
chunk_buffer = NULL;
if( libewf_handle_close(
handle,
error ) != 0 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_IO,
LIBERROR_IO_ERROR_CLOSE_FAILED,
"%s: unable to close handle.",
function );
goto on_error;
}
if( libewf_handle_free(
&handle,
error ) != 1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_FINALIZE_FAILED,
"%s: unable to free handle.",
function );
goto on_error;
}
return( 1 );
on_error:
if( compressed_chunk_buffer != NULL )
{
memory_free(
compressed_chunk_buffer );
}
if( chunk_buffer != NULL )
{
memory_free(
chunk_buffer );
}
if( handle != NULL )
{
libewf_handle_close(
handle,
NULL );
libewf_handle_free(
&handle,
NULL );
}
return( -1 );
}
/* The main program
*/
#if defined( LIBCSTRING_HAVE_WIDE_SYSTEM_CHARACTER )
int wmain( int argc, wchar_t * const argv[] )
#else
int main( int argc, char * const argv[] )
#endif
{
libcstring_system_character_t *option_chunk_size = NULL;
libcstring_system_character_t *option_compression_level = NULL;
libcstring_system_character_t *option_maximum_segment_size = NULL;
libcstring_system_character_t *option_media_size = NULL;
liberror_error_t *error = NULL;
libcstring_system_integer_t option = 0;
size64_t chunk_size = 0;
size64_t maximum_segment_size = 0;
size64_t media_size = 0;
size_t string_length = 0;
uint8_t compression_flags = 0;
int8_t compression_level = LIBEWF_COMPRESSION_NONE;
while( ( option = libsystem_getopt(
argc,
argv,
_LIBCSTRING_SYSTEM_STRING( "b:B:c:S:" ) ) ) != (libcstring_system_integer_t) -1 )
{
switch( option )
{
case (libcstring_system_integer_t) '?':
default:
fprintf(
stderr,
"Invalid argument: %" PRIs_LIBCSTRING_SYSTEM ".\n",
argv[ optind - 1 ] );
return( EXIT_FAILURE );
case (libcstring_system_integer_t) 'b':
option_chunk_size = optarg;
break;
case (libcstring_system_integer_t) 'c':
option_compression_level = optarg;
break;
case (libcstring_system_integer_t) 'B':
option_media_size = optarg;
break;
case (libcstring_system_integer_t) 'S':
option_maximum_segment_size = optarg;
break;
}
}
if( optind == argc )
{
fprintf(
stderr,
"Missing EWF image filename.\n" );
return( EXIT_FAILURE );
}
if( option_chunk_size != NULL )
{
string_length = libcstring_system_string_length(
option_chunk_size );
if( libsystem_string_decimal_copy_to_64_bit(
option_chunk_size,
string_length + 1,
&chunk_size,
&error ) != 1 )
{
fprintf(
stderr,
"Unsupported chunk size.\n" );
goto on_error;
}
}
if( option_compression_level != NULL )
{
string_length = libcstring_system_string_length(
option_compression_level );
if( string_length != 1 )
{
fprintf(
stderr,
"Unsupported compression level.\n" );
goto on_error;
}
if( option_compression_level[ 0 ] == (libcstring_system_character_t) 'n' )
{
compression_level = LIBEWF_COMPRESSION_NONE;
compression_flags = 0;
}
else if( option_compression_level[ 0 ] == (libcstring_system_character_t) 'e' )
{
compression_level = LIBEWF_COMPRESSION_NONE;
compression_flags = LIBEWF_FLAG_COMPRESS_EMPTY_BLOCK;
}
else if( option_compression_level[ 0 ] == (libcstring_system_character_t) 'f' )
{
compression_level = LIBEWF_COMPRESSION_FAST;
compression_flags = 0;
}
else if( option_compression_level[ 0 ] == (libcstring_system_character_t) 'b' )
{
compression_level = LIBEWF_COMPRESSION_BEST;
compression_flags = 0;
}
else
{
fprintf(
stderr,
"Unsupported compression level.\n" );
goto on_error;
}
}
if( option_maximum_segment_size != NULL )
{
string_length = libcstring_system_string_length(
option_maximum_segment_size );
if( libsystem_string_decimal_copy_to_64_bit(
option_maximum_segment_size,
string_length + 1,
&maximum_segment_size,
&error ) != 1 )
{
fprintf(
stderr,
"Unsupported maximum segment size.\n" );
goto on_error;
}
}
if( option_media_size != NULL )
{
string_length = libcstring_system_string_length(
option_media_size );
if( libsystem_string_decimal_copy_to_64_bit(
option_media_size,
string_length + 1,
&media_size,
&error ) != 1 )
{
fprintf(
stderr,
"Unsupported media size.\n" );
goto on_error;
}
}
if( ewf_test_write_chunk(
argv[ optind ],
media_size,
maximum_segment_size,
compression_level,
compression_flags,
&error ) != 1 )
{
fprintf(
stderr,
"Unable to test write.\n" );
goto on_error;
}
return( EXIT_SUCCESS );
on_error:
if( error != NULL )
{
libewf_error_backtrace_fprint(
error,
stderr );
libewf_error_free(
&error );
}
return( EXIT_FAILURE );
}

File Metadata

Mime Type
text/x-c
Expires
Wed, Oct 29, 11:52 AM (13 h, 43 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
1347006
Default Alt Text
ewf_test_write_chunk.c (11 KB)

Event Timeline