/* Appends a checksum error
* Returns 1 if successful or -1 on error
*/
int libewf_chunk_table_append_checksum_error(
libewf_chunk_table_t *chunk_table,
uint64_t start_sector,
uint64_t number_of_sectors,
libcerror_error_t **error )
{
static char *function = "libewf_chunk_table_append_checksum_error";
if( chunk_table == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid chunk table.",
function );
return( -1 );
}
if( libcdata_range_list_insert_range(
chunk_table->checksum_errors,
start_sector,
number_of_sectors,
NULL,
NULL,
NULL,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_APPEND_FAILED,
"%s: unable to insert checksum error in range list.",
function );
return( -1 );
}
return( 1 );
}
/* Retrieves the chunk data of a chunk at a specific offset
* Adds a checksum error if the data is corrupted
* Returns 1 if successful or -1 on error
*/
int libewf_chunk_table_get_chunk_data_by_offset(
libewf_chunk_table_t *chunk_table,
uint64_t chunk_index,
libewf_io_handle_t *io_handle,
libbfio_pool_t *file_io_pool,
libewf_media_values_t *media_values,
libewf_segment_table_t *segment_table,
libfdata_range_list_t *delta_chunks_range_list,
libfcache_cache_t *chunk_groups_cache,
libfcache_cache_t *chunks_cache,
off64_t offset,
libewf_chunk_data_t **chunk_data,
off64_t *chunk_data_offset,
libcerror_error_t **error )
{
libewf_segment_file_t *segment_file = NULL;
libfdata_list_t *chunks_list = NULL;
static char *function = "libewf_chunk_table_get_chunk_data_by_offset";
off64_t chunk_offset = 0;
off64_t chunk_group_data_offset = 0;
off64_t segment_file_data_offset = 0;
size_t chunk_data_size = 0;
uint64_t start_sector = 0;
uint64_t number_of_sectors = 0;
uint32_t segment_number = 0;
int chunk_groups_list_index = 0;
int chunks_list_index = 0;
int result = 0;
if( chunk_table == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid chunk table.",
function );
return( -1 );
}
if( io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid IO handle.",
function );
return( -1 );
}
if( media_values == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid media values.",
function );
return( -1 );
}
if( chunk_data == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid chunk data.",
function );
return( -1 );
}
if( chunk_data_offset == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid chunk data offset.",
function );
return( -1 );
}
if( delta_chunks_range_list != NULL )
{
result = libfdata_range_list_get_element_value_at_offset(
delta_chunks_range_list,
(intptr_t *) file_io_pool,
chunks_cache,
offset,
chunk_data_offset,
(intptr_t **) chunk_data,
0,
error );
if( result == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve chunk: %" PRIu64 " from delta chunks range list.",
function,
chunk_index );
return( -1 );
}
}
if( result == 0 )
{
result = libewf_chunk_table_get_segment_file_chunk_group_by_offset(
chunk_table,
file_io_pool,
segment_table,
chunk_groups_cache,
offset,
&segment_number,
&segment_file_data_offset,
&segment_file,
&chunk_groups_list_index,
&chunk_group_data_offset,
&chunks_list,
error );
if( result == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve segment file chunk group at offset: %" PRIi64 ".",
function,
offset );
return( -1 );
}
if( result != 0 )
{
if( chunks_list == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: missing chunks list: %d.",
function,
chunk_groups_list_index );
return( -1 );
}
result = libfdata_list_get_element_value_at_offset(
chunks_list,
(intptr_t *) file_io_pool,
chunks_cache,
chunk_group_data_offset,
&chunks_list_index,
chunk_data_offset,
(intptr_t **) chunk_data,
0,
error );
if( result == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to retrieve chunk: %" PRIu64 " data from chunk group: %d in segment file: %" PRIu32 " at offset: %" PRIi64 ".",
function,
chunk_index,
chunk_groups_list_index,
segment_number,
segment_file_data_offset );
return( -1 );
}
}
}
if( result != 0 )
{
if( *chunk_data == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: missing chunk: %" PRIu64 " data.",
function,
chunk_index );
return( -1 );
}
if( libewf_chunk_data_unpack(
*chunk_data,
media_values->chunk_size,
io_handle->compression_method,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GENERIC,
"%s: unable to unpack chunk: %" PRIu64 " data.",
function,
chunk_index );
return( -1 );
}
if( ( ( *chunk_data )->range_flags & LIBEWF_RANGE_FLAG_IS_CORRUPTED ) != 0 )
{
if( io_handle->zero_on_error != 0 )
{
if( memory_set(
( *chunk_data )->data,
0,
( *chunk_data )->data_size ) == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_SET_FAILED,
"%s: unable to zero chunk: %" PRIu64 " data.",
function,
chunk_index );
return( -1 );
}
}
chunk_offset = offset - *chunk_data_offset;
}
}
else
{
chunk_offset = (off64_t) chunk_index * media_values->chunk_size;
chunk_data_size = media_values->chunk_size;
if( (size64_t) ( chunk_offset + chunk_data_size ) > media_values->media_size )
{
chunk_data_size = (size_t) ( media_values->media_size - chunk_offset );
}
if( libewf_chunk_data_initialize_clear_data(
chunk_data,
chunk_data_size,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,
"%s: unable to create chunk: %" PRIu64 " data.",
function,
chunk_index );
return( -1 );
}
if( *chunk_data == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_MISSING,
"%s: missing chunk data: %" PRIu64 ".",
function,
chunk_index );
return( -1 );
}
( *chunk_data )->data_size = chunk_data_size;
( *chunk_data )->range_flags |= LIBEWF_RANGE_FLAG_IS_CORRUPTED;
}
if( ( ( *chunk_data )->range_flags & LIBEWF_RANGE_FLAG_IS_CORRUPTED ) != 0 )
{
/* Add checksum error
*/
start_sector = chunk_offset / media_values->bytes_per_sector;
number_of_sectors = media_values->sectors_per_chunk;
if( ( start_sector + number_of_sectors ) > (uint64_t) media_values->number_of_sectors )
{
number_of_sectors = (uint64_t) media_values->number_of_sectors - start_sector;
}
if( libcdata_range_list_insert_range(
chunk_table->checksum_errors,
start_sector,
number_of_sectors,
NULL,
NULL,
NULL,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_APPEND_FAILED,
"%s: unable to insert checksum error in range list.",
function );
return( -1 );
}
}
return( 1 );
}
/* Reads an free map
* Returns 1 if successful or -1 on error
*/
int libpff_free_map_read(
libcdata_range_list_t *unallocated_block_list,
libbfio_handle_t *file_io_handle,
off64_t free_map_offset,
uint8_t file_type,
libcerror_error_t **error )
{
uint8_t *free_map_data = NULL;
uint8_t *table_data = NULL;
static char *function = "libpff_free_map_read";
off64_t back_pointer_offset = 0;
off64_t unallocated_offset = 0;
size_t read_size = 0;
size_t unallocated_size = 0;
size_t allocation_block_size = 0;
ssize_t read_count = 0;
uint32_t stored_checksum = 0;
uint32_t calculated_checksum = 0;
uint16_t table_iterator = 0;
uint8_t bit_iterator = 0;
uint8_t free_map_entry = 0;
uint8_t free_map_type = 0;
uint8_t free_map_type_copy = 0;
int result = 0;
#if defined( HAVE_DEBUG_OUTPUT )
uint16_t value_16bit = 0;
#endif
if( unallocated_block_list == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid unallocated block list.",
function );
return( -1 );
}
if( file_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid file IO handle.",
function );
return( -1 );
}
if( ( file_type != LIBPFF_FILE_TYPE_32BIT )
&& ( file_type != LIBPFF_FILE_TYPE_64BIT ) )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported file type.",
function );
return( -1 );
}
if( libbfio_handle_seek_offset(
file_io_handle,
free_map_offset,
SEEK_SET,
error ) == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_SEEK_FAILED,
"%s: unable to seek free map offset: %" PRIi64 ".",
function,
free_map_offset );
goto on_error;
}
if( file_type == LIBPFF_FILE_TYPE_32BIT )
{
read_size = sizeof( pff_free_map_32bit_t );
}
else if( file_type == LIBPFF_FILE_TYPE_64BIT )
{
read_size = sizeof( pff_free_map_64bit_t );
}
free_map_data = (uint8_t *) memory_allocate(
sizeof( uint8_t ) * read_size );
if( free_map_data == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
"%s: unable to create alloction table data.",
function );
goto on_error;
}
read_count = libbfio_handle_read_buffer(
file_io_handle,
free_map_data,
read_size,
error );
if( read_count != (ssize_t) read_size )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_READ_FAILED,
"%s: unable to read free map.",
function );
goto on_error;
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: free map:\n",
function );
libcnotify_print_data(
free_map_data,
read_size,
0 );
}
#endif
if( file_type == LIBPFF_FILE_TYPE_32BIT )
{
table_data = ( (pff_free_map_32bit_t *) free_map_data )->data;
free_map_type = ( (pff_free_map_32bit_t *) free_map_data )->type;
free_map_type_copy = ( (pff_free_map_32bit_t *) free_map_data )->type_copy;
byte_stream_copy_to_uint32_little_endian(
( (pff_free_map_32bit_t *) free_map_data )->back_pointer,
back_pointer_offset );
byte_stream_copy_to_uint32_little_endian(
( (pff_free_map_32bit_t *) free_map_data )->checksum,
stored_checksum );
}
else if( file_type == LIBPFF_FILE_TYPE_64BIT )
{
table_data = ( (pff_free_map_64bit_t *) free_map_data )->data;
free_map_type = ( (pff_free_map_64bit_t *) free_map_data )->type;
free_map_type_copy = ( (pff_free_map_64bit_t *) free_map_data )->type_copy;
byte_stream_copy_to_uint32_little_endian(
( (pff_free_map_64bit_t *) free_map_data )->checksum,
stored_checksum );
byte_stream_copy_to_uint64_little_endian(
( (pff_free_map_64bit_t *) free_map_data )->back_pointer,
back_pointer_offset );
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: type\t\t: 0x%02" PRIx8 "\n",
function,
free_map_type );
libcnotify_printf(
"%s: type copy\t: 0x%02" PRIx8 "\n",
function,
free_map_type_copy );
if( file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_free_map_32bit_t *) free_map_data )->signature,
value_16bit );
libcnotify_printf(
"%s: signature\t: 0x%04" PRIx16 "\n",
function,
value_16bit );
libcnotify_printf(
"%s: back pointer\t: %" PRIu64 "\n",
function,
back_pointer_offset );
libcnotify_printf(
"%s: checksum\t: 0x%" PRIx32 "\n",
function,
stored_checksum );
}
else if( file_type == LIBPFF_FILE_TYPE_64BIT )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_free_map_64bit_t *) free_map_data )->signature,
value_16bit );
libcnotify_printf(
"%s: signature\t: 0x%04" PRIx16 "\n",
function,
value_16bit );
libcnotify_printf(
"%s: checksum\t\t: 0x%" PRIx32 "\n",
function,
stored_checksum );
libcnotify_printf(
"%s: back pointer\t: %" PRIu64 "\n",
function,
back_pointer_offset );
}
libcnotify_printf(
"\n" );
}
#endif
if( libfmapi_checksum_calculate_weak_crc32(
&calculated_checksum,
table_data,
496,
0,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable to calculate weak CRC-32.",
function );
goto on_error;
}
if( stored_checksum != calculated_checksum )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_INPUT,
LIBCERROR_INPUT_ERROR_CHECKSUM_MISMATCH,
"%s: mismatch in checksum ( %" PRIu32 " != %" PRIu32 " ).",
function,
stored_checksum,
calculated_checksum );
/* TODO implement error tollerance
*/
goto on_error;
}
if( free_map_type != free_map_type_copy )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_INPUT,
LIBCERROR_INPUT_ERROR_CHECKSUM_MISMATCH,
"%s: mismatch in allocation table type ( 0x%02" PRIx8 " != 0x%02" PRIx8 " ).",
function,
free_map_type,
free_map_type_copy );
/* TODO implement error tollerance
*/
goto on_error;
}
if( ( free_map_type != LIBPFF_FREE_MAP_TYPE_DATA )
&& ( free_map_type != LIBPFF_FREE_MAP_TYPE_PAGE ) )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported allocation table type: 0x%08" PRIx32 "",
function,
free_map_type );
/* TODO implement error tollerance
*/
goto on_error;
}
/* TODO */
if( free_map_type == LIBPFF_FREE_MAP_TYPE_PAGE )
{
allocation_block_size = 512;
back_pointer_offset -= 0x200;
}
else if( free_map_type == LIBPFF_FREE_MAP_TYPE_DATA )
{
allocation_block_size = 64;
}
for( table_iterator = 0;
table_iterator < 496;
table_iterator++ )
{
free_map_entry = table_data[ table_iterator ];
for( bit_iterator = 0;
bit_iterator < 8;
bit_iterator++ )
{
if( ( free_map_entry & 0x80 ) == 0 )
{
if( unallocated_size == 0 )
{
unallocated_offset = back_pointer_offset;
}
unallocated_size += allocation_block_size;
}
else if( unallocated_size > 0 )
{
result = libcdata_range_list_insert_range(
unallocated_block_list,
unallocated_offset,
unallocated_size,
NULL,
NULL,
NULL,
error );
if( result == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_APPEND_FAILED,
"%s: unable to append unallocated block to list.",
function );
goto on_error;
}
unallocated_size = 0;
}
free_map_entry <<= 1;
back_pointer_offset += allocation_block_size;
}
}
if( unallocated_size > 0 )
{
result = libcdata_range_list_insert_range(
unallocated_block_list,
unallocated_offset,
unallocated_size,
NULL,
NULL,
NULL,
error );
if( result == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_APPEND_FAILED,
"%s: unable to append unallocated block to list.",
function );
goto on_error;
}
unallocated_size = 0;
}
memory_free(
free_map_data );
return( 1 );
on_error:
if( free_map_data != NULL )
{
memory_free(
free_map_data );
}
return( -1 );
}
/* Reads an allocation table
* Returns 1 if successful or -1 on error
*/
int libpff_allocation_table_read(
libcdata_range_list_t *unallocated_block_list,
libbfio_handle_t *file_io_handle,
off64_t allocation_table_offset,
uint8_t file_type,
libcerror_error_t **error )
{
uint8_t *allocation_table_data = NULL;
uint8_t *table_data = NULL;
static char *function = "libpff_allocation_table_read";
off64_t back_pointer_offset = 0;
off64_t unallocated_offset = 0;
size_t read_size = 0;
size_t unallocated_size = 0;
size_t allocation_block_size = 0;
ssize_t read_count = 0;
uint32_t stored_checksum = 0;
uint32_t calculated_checksum = 0;
uint16_t table_data_index = 0;
uint16_t table_data_size = 0;
uint8_t allocation_table_entry = 0;
uint8_t allocation_table_type = 0;
uint8_t allocation_table_type_copy = 0;
uint8_t bit_index = 0;
#if defined( HAVE_DEBUG_OUTPUT )
uint64_t value_64bit = 0;
uint16_t value_16bit = 0;
#endif
if( unallocated_block_list == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid unallocated block list.",
function );
return( -1 );
}
if( file_io_handle == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid file IO handle.",
function );
return( -1 );
}
if( ( file_type != LIBPFF_FILE_TYPE_32BIT )
&& ( file_type != LIBPFF_FILE_TYPE_64BIT )
&& ( file_type != LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported file type.",
function );
return( -1 );
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: reading allocation table at offset: 0x%08" PRIx64 "\n",
function,
allocation_table_offset );
}
#endif
if( libbfio_handle_seek_offset(
file_io_handle,
allocation_table_offset,
SEEK_SET,
error ) == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_SEEK_FAILED,
"%s: unable to seek allocation table offset: 0x%08" PRIx64 ".",
function,
allocation_table_offset );
goto on_error;
}
if( file_type == LIBPFF_FILE_TYPE_32BIT )
{
read_size = sizeof( pff_allocation_table_32bit_t );
table_data_size = 496;
}
else if( file_type == LIBPFF_FILE_TYPE_64BIT )
{
read_size = sizeof( pff_allocation_table_64bit_t );
table_data_size = 496;
}
else if( file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE )
{
read_size = sizeof( pff_allocation_table_64bit_4k_page_t );
table_data_size = 4072;
}
allocation_table_data = (uint8_t *) memory_allocate(
sizeof( uint8_t ) * read_size );
if( allocation_table_data == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
"%s: unable to create alloction table data.",
function );
goto on_error;
}
read_count = libbfio_handle_read_buffer(
file_io_handle,
allocation_table_data,
read_size,
error );
if( read_count != (ssize_t) read_size )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_READ_FAILED,
"%s: unable to read allocation table.",
function );
goto on_error;
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: allocation table:\n",
function );
libcnotify_print_data(
allocation_table_data,
read_size,
LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );
}
#endif
if( file_type == LIBPFF_FILE_TYPE_32BIT )
{
table_data = ( (pff_allocation_table_32bit_t *) allocation_table_data )->data;
allocation_table_type = ( (pff_allocation_table_32bit_t *) allocation_table_data )->type;
allocation_table_type_copy = ( (pff_allocation_table_32bit_t *) allocation_table_data )->type_copy;
byte_stream_copy_to_uint32_little_endian(
( (pff_allocation_table_32bit_t *) allocation_table_data )->back_pointer,
back_pointer_offset );
byte_stream_copy_to_uint32_little_endian(
( (pff_allocation_table_32bit_t *) allocation_table_data )->checksum,
stored_checksum );
}
else if( file_type == LIBPFF_FILE_TYPE_64BIT )
{
table_data = ( (pff_allocation_table_64bit_t *) allocation_table_data )->data;
allocation_table_type = ( (pff_allocation_table_64bit_t *) allocation_table_data )->type;
allocation_table_type_copy = ( (pff_allocation_table_64bit_t *) allocation_table_data )->type_copy;
byte_stream_copy_to_uint32_little_endian(
( (pff_allocation_table_64bit_t *) allocation_table_data )->checksum,
stored_checksum );
byte_stream_copy_to_uint64_little_endian(
( (pff_allocation_table_64bit_t *) allocation_table_data )->back_pointer,
back_pointer_offset );
}
else if( file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE )
{
table_data = ( (pff_allocation_table_64bit_4k_page_t *) allocation_table_data )->data;
allocation_table_type = ( (pff_allocation_table_64bit_4k_page_t *) allocation_table_data )->type;
allocation_table_type_copy = ( (pff_allocation_table_64bit_4k_page_t *) allocation_table_data )->type_copy;
byte_stream_copy_to_uint32_little_endian(
( (pff_allocation_table_64bit_4k_page_t *) allocation_table_data )->checksum,
stored_checksum );
byte_stream_copy_to_uint64_little_endian(
( (pff_allocation_table_64bit_4k_page_t *) allocation_table_data )->back_pointer,
back_pointer_offset );
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: type\t\t: 0x%02" PRIx8 "\n",
function,
allocation_table_type );
libcnotify_printf(
"%s: type copy\t\t: 0x%02" PRIx8 "\n",
function,
allocation_table_type_copy );
if( file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_allocation_table_32bit_t *) allocation_table_data )->signature,
value_16bit );
libcnotify_printf(
"%s: signature\t\t: 0x%04" PRIx16 "\n",
function,
value_16bit );
libcnotify_printf(
"%s: back pointer\t: %" PRIu64 "\n",
function,
back_pointer_offset );
libcnotify_printf(
"%s: checksum\t\t: 0x%" PRIx32 "\n",
function,
stored_checksum );
}
else if( ( file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
if( file_type == LIBPFF_FILE_TYPE_64BIT )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_allocation_table_64bit_t *) allocation_table_data )->signature,
value_16bit );
}
else
{
byte_stream_copy_to_uint16_little_endian(
( (pff_allocation_table_64bit_4k_page_t *) allocation_table_data )->signature,
value_16bit );
}
libcnotify_printf(
"%s: signature\t\t: 0x%04" PRIx16 "\n",
function,
value_16bit );
libcnotify_printf(
"%s: checksum\t\t: 0x%" PRIx32 "\n",
function,
stored_checksum );
libcnotify_printf(
"%s: back pointer\t: %" PRIu64 "\n",
function,
back_pointer_offset );
if( file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE )
{
byte_stream_copy_to_uint64_little_endian(
( (pff_allocation_table_64bit_4k_page_t *) allocation_table_data )->unknown1,
value_64bit );
libcnotify_printf(
"%s: unknown1\t\t: 0x%08" PRIx64 "\n",
function,
value_64bit );
}
}
libcnotify_printf(
"\n" );
}
#endif
if( libfmapi_checksum_calculate_weak_crc32(
&calculated_checksum,
table_data,
(size_t) table_data_size,
0,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_SET_FAILED,
"%s: unable to calculate weak CRC-32.",
function );
goto on_error;
}
if( stored_checksum != calculated_checksum )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_INPUT,
LIBCERROR_INPUT_ERROR_CHECKSUM_MISMATCH,
"%s: mismatch in checksum ( %" PRIu32 " != %" PRIu32 " ).",
function,
stored_checksum,
calculated_checksum );
/* TODO implement error tollerance */
goto on_error;
}
if( allocation_table_type != allocation_table_type_copy )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_INPUT,
LIBCERROR_INPUT_ERROR_CHECKSUM_MISMATCH,
"%s: mismatch in allocation table type ( 0x%02" PRIx8 " != 0x%02" PRIx8 " ).",
function,
allocation_table_type,
allocation_table_type_copy );
/* TODO implement error tollerance */
goto on_error;
}
if( ( allocation_table_type != LIBPFF_ALLOCATION_TABLE_TYPE_DATA )
&& ( allocation_table_type != LIBPFF_ALLOCATION_TABLE_TYPE_PAGE ) )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported allocation table type: 0x%08" PRIx32 "",
function,
allocation_table_type );
/* TODO implement error tollerance */
goto on_error;
}
if( allocation_table_type == LIBPFF_ALLOCATION_TABLE_TYPE_PAGE )
{
/* The page type allocation has not yet been seen i.c.w. 4k pages */
if( file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported file type.",
function );
goto on_error;
}
allocation_block_size = 512;
back_pointer_offset -= 0x200;
}
else if( allocation_table_type == LIBPFF_ALLOCATION_TABLE_TYPE_DATA )
{
allocation_block_size = 64;
}
for( table_data_index = 0;
table_data_index < table_data_size;
table_data_index++ )
{
allocation_table_entry = table_data[ table_data_index ];
for( bit_index = 0;
bit_index < 8;
bit_index++ )
{
if( ( allocation_table_entry & 0x80 ) == 0 )
{
if( unallocated_size == 0 )
{
unallocated_offset = back_pointer_offset;
}
unallocated_size += allocation_block_size;
}
else if( unallocated_size > 0 )
{
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: unallocated block: 0x%08" PRIx64 " - 0x%08" PRIx64 " (%" PRIu64 ")\n",
function,
unallocated_offset,
unallocated_offset + unallocated_size,
unallocated_size );
}
#endif
if( libcdata_range_list_insert_range(
unallocated_block_list,
unallocated_offset,
unallocated_size,
NULL,
NULL,
NULL,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_APPEND_FAILED,
"%s: unable to append unallocated block to list.",
function );
goto on_error;
}
unallocated_size = 0;
}
allocation_table_entry <<= 1;
back_pointer_offset += allocation_block_size;
}
}
if( unallocated_size > 0 )
{
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: unallocated block: 0x%08" PRIx64 " - 0x%08" PRIx64 " (%" PRIu64 ")\n",
function,
unallocated_offset,
unallocated_offset + unallocated_size,
unallocated_size );
}
#endif
if( libcdata_range_list_insert_range(
unallocated_block_list,
unallocated_offset,
unallocated_size,
NULL,
NULL,
NULL,
error ) != 1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_APPEND_FAILED,
"%s: unable to append unallocated block to list.",
function );
goto on_error;
}
unallocated_size = 0;
}
memory_free(
allocation_table_data );
return( 1 );
on_error:
if( allocation_table_data != NULL )
{
memory_free(
allocation_table_data );
}
return( -1 );
}
