/* Tests libewf_handle_read_chunk and libewf_handle_prepare_read_chunk
* Returns 1 if successful, 0 if not or -1 on error
*/
int ewf_test_read_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,
libcerror_error_t **error )
{
uint8_t checksum_buffer[ 4 ];
static char *function = "ewf_test_read_chunk";
size64_t remaining_size = 0;
size64_t result_size = 0;
size_t data_size = 0;
ssize_t process_count = 0;
ssize_t read_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_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 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_READ_FAILED,
"%s: unable to prepare chunk of size: %" PRIzd " after read.",
function,
read_count );
return( -1 );
}
remaining_size -= (size64_t) process_count;
result_size += (size64_t) process_count;
}
if( expected_size != result_size )
{
fprintf(
stderr,
"%s: unexpected read count: %" PRIu64 "\n",
function,
result_size );
return( 0 );
}
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 );
}
