/* 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 libcstring_system_character_t *filename,
size64_t media_size,
size64_t maximum_segment_size,
int8_t compression_level,
uint8_t compression_flags,
libcerror_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_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
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_CLOSE_FAILED,
"%s: unable to close handle.",
function );
goto on_error;
}
if( libewf_handle_free(
&handle,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_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 );
}
/* Tests libewf_handle_read_chunk, libewf_handle_write_chunk, libewf_handle_prepare_read_chunk and libewf_handle_prepare_write_chunk
* Returns 1 if successful, 0 if not or -1 on error
*/
int ewf_test_read_write_chunk(
libewf_handle_t *handle,
uint8_t *data_buffer,
size_t data_buffer_size,
uint8_t *chunk_buffer,
size_t chunk_buffer_size,
size64_t input_size,
size64_t expected_size,
liberror_error_t **error )
{
uint8_t checksum_buffer[ 4 ];
static char *function = "ewf_test_read_write_chunk";
size64_t remaining_size = 0;
size64_t result_size = 0;
size_t chunk_data_size = 0;
size_t data_size = 0;
size_t write_size = 0;
ssize_t process_count = 0;
ssize_t read_count = 0;
ssize_t write_count = 0;
uint32_t chunk_checksum = 0;
int8_t is_compressed = 0;
int8_t process_checksum = 0;
remaining_size = input_size;
while( remaining_size > 0 )
{
read_count = libewf_handle_read_chunk(
handle,
chunk_buffer,
chunk_buffer_size,
&is_compressed,
(void *) checksum_buffer,
&chunk_checksum,
&process_checksum,
error );
if( read_count < 0 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_IO,
LIBERROR_IO_ERROR_READ_FAILED,
"%s: unable to read chunk of size: %" PRIzd ".",
function,
chunk_buffer_size );
return( -1 );
}
else if( read_count == 0 )
{
break;
}
data_size = data_buffer_size;
process_count = libewf_handle_prepare_read_chunk(
handle,
chunk_buffer,
(size_t) read_count,
data_buffer,
&data_size,
is_compressed,
chunk_checksum,
process_checksum,
error );
if( process_count < 0 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_IO,
LIBERROR_IO_ERROR_READ_FAILED,
"%s: unable to prepare chunk of size: %" PRIzd " after read.",
function,
read_count );
return( -1 );
}
if( libewf_handle_seek_offset(
handle,
-1 * (off64_t) process_count,
SEEK_CUR,
error ) == -1 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_IO,
LIBERROR_IO_ERROR_READ_FAILED,
"%s: unable to seek previous offset.",
function );
return( -1 );
}
if( memory_set(
data_buffer,
(int) 'C',
data_buffer_size ) == NULL )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_MEMORY,
LIBERROR_MEMORY_ERROR_SET_FAILED,
"%s: unable set value in buffer.",
function );
return( -1 );
}
write_size = process_count;
chunk_data_size = chunk_buffer_size;
process_count = libewf_handle_prepare_write_chunk(
handle,
data_buffer,
write_size,
chunk_buffer,
&chunk_data_size,
&is_compressed,
&chunk_checksum,
&process_checksum,
error );
if( process_count < 0 )
{
liberror_error_set(
error,
LIBERROR_ERROR_DOMAIN_RUNTIME,
LIBERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable to prepare chunk buffer before writing.",
function );
return( -1 );
}
if( is_compressed == 0 )
{
write_count = libewf_handle_write_chunk(
handle,
data_buffer,
process_count,
write_size,
is_compressed,
checksum_buffer,
chunk_checksum,
process_checksum,
error );
}
else
{
write_count = libewf_handle_write_chunk(
handle,
chunk_buffer,
chunk_data_size,
write_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_data_size );
return( -1 );
}
remaining_size -= (size64_t) write_size;
result_size += (size64_t) write_size;
}
if( expected_size != result_size )
{
fprintf(
stderr,
"%s: unexpected read/write count: %" PRIu64 "\n",
function,
result_size );
return( 0 );
}
return( 1 );
}
