/* 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 index node
* Returns 1 if successful or -1 on error
*/
int libpff_index_node_read(
libpff_index_node_t *index_node,
libpff_io_handle_t *io_handle,
libbfio_handle_t *file_io_handle,
off64_t node_offset,
libcerror_error_t **error )
{
uint8_t *index_node_footer_data = NULL;
static char *function = "libpff_index_node_read";
ssize_t read_count = 0;
uint32_t calculated_checksum = 0;
uint32_t stored_checksum = 0;
uint8_t calculated_entry_size = 0;
uint8_t calculated_maximum_number_of_entries = 0;
uint8_t index_node_type_copy = 0;
int result = 0;
#if defined( HAVE_DEBUG_OUTPUT )
uint8_t *index_node_entry_data = NULL;
uint64_t value_64bit = 0;
uint32_t value_32bit = 0;
uint16_t entry_index = 0;
uint16_t index_node_entry_data_size = 0;
uint16_t value_16bit = 0;
#endif
if( index_node == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
"%s: invalid index node.",
function );
return( -1 );
}
if( index_node->data != NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,
"%s: invalid index node - data already set.",
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( ( io_handle->file_type != LIBPFF_FILE_TYPE_32BIT )
&& ( io_handle->file_type != LIBPFF_FILE_TYPE_64BIT )
&& ( io_handle->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( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
index_node->data_size = 512;
index_node->maximum_entries_data_size = 512 - sizeof( pff_index_node_32bit_footer_t );
}
else if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
{
index_node->data_size = 512;
index_node->maximum_entries_data_size = 512 - sizeof( pff_index_node_64bit_footer_t );
}
else if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE )
{
index_node->data_size = 4096;
index_node->maximum_entries_data_size = 4096 - sizeof( pff_index_node_64bit_4k_page_footer_t );
}
index_node->data = (uint8_t *) memory_allocate(
sizeof( uint8_t ) * index_node->data_size );
if( index_node->data == NULL )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_MEMORY,
LIBCERROR_MEMORY_ERROR_INSUFFICIENT,
"%s: unable to create index node data.",
function );
goto on_error;
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: reading index node data at offset: %" PRIi64 " (0x%08" PRIx64 ")\n",
function,
node_offset,
node_offset );
}
#endif
if( libbfio_handle_seek_offset(
file_io_handle,
node_offset,
SEEK_SET,
error ) == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_SEEK_FAILED,
"%s: unable to seek node offset: %" PRIi64 ".",
function,
node_offset );
goto on_error;
}
read_count = libbfio_handle_read_buffer(
file_io_handle,
index_node->data,
index_node->data_size,
error );
if( read_count != (ssize_t) index_node->data_size )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_IO,
LIBCERROR_IO_ERROR_READ_FAILED,
"%s: unable to read index node data.",
function );
goto on_error;
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: index node data:\n",
function );
libcnotify_print_data(
index_node->data,
index_node->data_size,
LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA );
}
#endif
index_node_footer_data = &( index_node->data[ index_node->maximum_entries_data_size ] );
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
index_node->type = ( (pff_index_node_32bit_footer_t *) index_node_footer_data )->type;
index_node_type_copy = ( (pff_index_node_32bit_footer_t *) index_node_footer_data )->type_copy;
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_32bit_footer_t *) index_node_footer_data )->back_pointer,
index_node->back_pointer );
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_32bit_footer_t *) index_node_footer_data )->checksum,
stored_checksum );
index_node->number_of_entries = ( (pff_index_node_32bit_footer_t *) index_node_footer_data )->number_of_entries;
index_node->maximum_number_of_entries = ( (pff_index_node_32bit_footer_t *) index_node_footer_data )->maximum_number_of_entries;
index_node->entry_size = ( (pff_index_node_32bit_footer_t *) index_node_footer_data )->entry_size;
index_node->level = ( (pff_index_node_32bit_footer_t *) index_node_footer_data )->level;
if( ( index_node->type == LIBPFF_INDEX_TYPE_DESCRIPTOR )
&& ( index_node->level == LIBPFF_INDEX_NODE_LEVEL_LEAF ) )
{
calculated_entry_size = 16;
calculated_maximum_number_of_entries = 496 / 16;
}
else
{
calculated_entry_size = 12;
calculated_maximum_number_of_entries = 496 / 12;
}
}
else if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
{
index_node->type = ( (pff_index_node_64bit_footer_t *) index_node_footer_data )->type;
index_node_type_copy = ( (pff_index_node_64bit_footer_t *) index_node_footer_data )->type_copy;
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_64bit_footer_t *) index_node_footer_data )->checksum,
stored_checksum );
byte_stream_copy_to_uint64_little_endian(
( (pff_index_node_64bit_footer_t *) index_node_footer_data )->back_pointer,
index_node->back_pointer );
index_node->number_of_entries = ( (pff_index_node_64bit_footer_t *) index_node_footer_data )->number_of_entries;
index_node->maximum_number_of_entries = ( (pff_index_node_64bit_footer_t *) index_node_footer_data )->maximum_number_of_entries;
index_node->entry_size = ( (pff_index_node_64bit_footer_t *) index_node_footer_data )->entry_size;
index_node->level = ( (pff_index_node_64bit_footer_t *) index_node_footer_data )->level;
if( ( index_node->type == LIBPFF_INDEX_TYPE_DESCRIPTOR )
&& ( index_node->level == LIBPFF_INDEX_NODE_LEVEL_LEAF ) )
{
calculated_entry_size = 32;
calculated_maximum_number_of_entries = 488 / 32;
}
else
{
calculated_entry_size = 24;
calculated_maximum_number_of_entries = 488 / 24;
}
}
else if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE )
{
index_node->type = ( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->type;
index_node_type_copy = ( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->type_copy;
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->checksum,
stored_checksum );
byte_stream_copy_to_uint64_little_endian(
( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->back_pointer,
index_node->back_pointer );
byte_stream_copy_to_uint16_little_endian(
( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->number_of_entries,
index_node->number_of_entries );
byte_stream_copy_to_uint16_little_endian(
( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->maximum_number_of_entries,
index_node->maximum_number_of_entries );
index_node->entry_size = ( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->entry_size;
index_node->level = ( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->level;
if( ( index_node->type == LIBPFF_INDEX_TYPE_DESCRIPTOR )
&& ( index_node->level == LIBPFF_INDEX_NODE_LEVEL_LEAF ) )
{
calculated_entry_size = 32;
calculated_maximum_number_of_entries = 4056 / 32;
}
else
{
calculated_entry_size = 24;
calculated_maximum_number_of_entries = 4056 / 24;
}
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: number of entries\t\t\t\t: %" PRIu16 "\n",
function,
index_node->number_of_entries );
libcnotify_printf(
"%s: maximum number of entries\t\t\t: %" PRIu16 "\n",
function,
index_node->maximum_number_of_entries );
libcnotify_printf(
"%s: entry size\t\t\t\t\t: %" PRIu8 "\n",
function,
index_node->entry_size );
libcnotify_printf(
"%s: node level\t\t\t\t\t: %" PRIu8 "\n",
function,
index_node->level );
if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
{
libcnotify_printf(
"%s: padding:\n",
function );
libcnotify_print_data(
( (pff_index_node_64bit_footer_t *) index_node_footer_data )->padding1,
4,
0 );
}
else if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE )
{
libcnotify_printf(
"%s: padding:\n",
function );
libcnotify_print_data(
( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->padding1,
10,
0 );
}
libcnotify_printf(
"%s: index node type\t\t\t\t\t: 0x%02" PRIx8 "\n",
function,
index_node->type );
libcnotify_printf(
"%s: index node type copy\t\t\t\t: 0x%02" PRIx8 "\n",
function,
index_node_type_copy );
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_index_node_32bit_footer_t *) index_node_footer_data )->signature,
value_16bit );
libcnotify_printf(
"%s: signature\t\t\t\t\t: 0x%04" PRIx16 "\n",
function,
value_16bit );
libcnotify_printf(
"%s: back pointer\t\t\t\t\t: 0x%08" PRIx64 "\n",
function,
index_node->back_pointer );
libcnotify_printf(
"%s: checksum\t\t\t\t\t: 0x%08" PRIx32 "\n",
function,
stored_checksum );
}
else if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_index_node_64bit_footer_t *) index_node_footer_data )->signature,
value_16bit );
libcnotify_printf(
"%s: signature\t\t\t\t\t: 0x%04" PRIx16 "\n",
function,
value_16bit );
libcnotify_printf(
"%s: checksum\t\t\t\t\t: 0x%08" PRIx32 "\n",
function,
stored_checksum );
libcnotify_printf(
"%s: back pointer\t\t\t\t\t: 0x%08" PRIx64 "\n",
function,
index_node->back_pointer );
}
else if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->signature,
value_16bit );
libcnotify_printf(
"%s: signature\t\t\t\t\t: 0x%04" PRIx16 "\n",
function,
value_16bit );
libcnotify_printf(
"%s: checksum\t\t\t\t\t: 0x%08" PRIx32 "\n",
function,
stored_checksum );
libcnotify_printf(
"%s: back pointer\t\t\t\t\t: 0x%08" PRIx64 "\n",
function,
index_node->back_pointer );
byte_stream_copy_to_uint64_little_endian(
( (pff_index_node_64bit_4k_page_footer_t *) index_node_footer_data )->unknown1,
value_64bit );
libcnotify_printf(
"%s: unknown1\t\t\t\t\t: 0x%08" PRIx64 "\n",
function,
value_64bit );
}
libcnotify_printf(
"\n" );
}
#endif
if( index_node->type != index_node_type_copy )
{
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: mismatch in index node type (0x%02" PRIx8 " != 0x%02" PRIx8 ").\n",
function,
index_node->type,
index_node_type_copy );
}
#endif
if( ( index_node->type != LIBPFF_INDEX_TYPE_DESCRIPTOR )
&& ( index_node->type != LIBPFF_INDEX_TYPE_OFFSET )
&& ( ( index_node_type_copy == LIBPFF_INDEX_TYPE_DESCRIPTOR )
|| ( index_node_type_copy == LIBPFF_INDEX_TYPE_OFFSET ) ) )
{
index_node->type = index_node_type_copy;
}
}
if( ( index_node->type != LIBPFF_INDEX_TYPE_DESCRIPTOR )
&& ( index_node->type != LIBPFF_INDEX_TYPE_OFFSET ) )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE,
"%s: unsupported index node type: 0x%02" PRIx8 ".",
function,
index_node->type );
goto on_error;
}
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
result = libfmapi_checksum_calculate_weak_crc32(
&calculated_checksum,
index_node->data,
500,
0,
error );
}
else if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
{
result = libfmapi_checksum_calculate_weak_crc32(
&calculated_checksum,
index_node->data,
496,
0,
error );
}
else if( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE )
{
result = libfmapi_checksum_calculate_weak_crc32(
&calculated_checksum,
index_node->data,
4072,
0,
error );
}
if( result != 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 )
{
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: mismatch in checksum ( 0x%08" PRIx32 " != 0x%08" PRIx32 " ).\n",
function,
stored_checksum,
calculated_checksum );
}
#endif
/* TODO smart error handling */
}
if( ( index_node->entry_size != 0 )
&& ( index_node->entry_size != calculated_entry_size ) )
{
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: entry size mismatch (calculated: %" PRIu8 ", stored: %" PRIu8 ").\n",
function,
calculated_entry_size,
index_node->entry_size );
}
#endif
index_node->entry_size = calculated_entry_size;
}
if( ( index_node->maximum_number_of_entries != 0 )
&& ( index_node->maximum_number_of_entries != calculated_maximum_number_of_entries ) )
{
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: maximum number of entries mismatch (calculated: %" PRIu8 ", stored: %" PRIu8 ").\n",
function,
calculated_maximum_number_of_entries,
index_node->maximum_number_of_entries );
}
#endif
index_node->maximum_number_of_entries = calculated_maximum_number_of_entries;
}
if( index_node->number_of_entries > index_node->maximum_number_of_entries )
{
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
libcnotify_printf(
"%s: number of entries: %" PRIu8 ", exceeds maximum: %" PRIu8 ".",
function,
index_node->number_of_entries,
index_node->maximum_number_of_entries );
}
#endif
index_node->number_of_entries = index_node->maximum_number_of_entries;
}
if( ( (uint16_t) index_node->number_of_entries * (uint16_t) index_node->entry_size ) > index_node->maximum_entries_data_size )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_VALUE_EXCEEDS_MAXIMUM,
"%s: size of entries: %" PRIu16 ", exceeds maximum: %" PRIu16 ".",
function,
index_node->number_of_entries * index_node->entry_size,
index_node->maximum_entries_data_size );
goto on_error;
}
#if defined( HAVE_DEBUG_OUTPUT )
if( libcnotify_verbose != 0 )
{
index_node_entry_data = index_node->data;
index_node_entry_data_size = index_node->maximum_entries_data_size;
/* Print all the entries
*/
for( entry_index = 0;
entry_index < index_node->maximum_number_of_entries;
entry_index++ )
{
if( entry_index == index_node->number_of_entries )
{
result = libpff_index_node_check_for_empty_block(
index_node_entry_data,
index_node_entry_data_size,
error );
if( result == -1 )
{
libcerror_error_set(
error,
LIBCERROR_ERROR_DOMAIN_RUNTIME,
LIBCERROR_RUNTIME_ERROR_GET_FAILED,
"%s: unable to determine if remaining index nodes are empty.",
function );
return( -1 );
}
else if( result != 0 )
{
break;
}
libcnotify_printf(
"\n" );
libcnotify_printf(
"%s: remaining node entries\n",
function );
}
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint32_little_endian(
index_node_entry_data,
value_64bit );
}
else if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint64_little_endian(
index_node_entry_data,
value_64bit );
}
libcnotify_printf(
"%s: entry: %03" PRIu16 " index node identifier\t\t: 0x%08" PRIx64 " (%" PRIu64 ")\n",
function,
entry_index,
value_64bit,
value_64bit );
/* Process descriptor index node leaf nodes
*/
if( ( index_node->type == LIBPFF_INDEX_TYPE_DESCRIPTOR )
&& ( index_node->level == LIBPFF_INDEX_NODE_LEVEL_LEAF ) )
{
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_descriptor_entry_32bit_t *) index_node_entry_data )->data_identifier,
value_64bit );
}
else if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint64_little_endian(
( (pff_index_node_descriptor_entry_64bit_t *) index_node_entry_data )->data_identifier,
value_64bit );
}
libcnotify_printf(
"%s: entry: %03" PRIu16 " data identifier\t\t\t: 0x%08" PRIx64 " (%" PRIu64 ")\n",
function,
entry_index,
value_64bit,
value_64bit );
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_descriptor_entry_32bit_t *) index_node_entry_data )->local_descriptors_identifier,
value_64bit );
}
else if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint64_little_endian(
( (pff_index_node_descriptor_entry_64bit_t *) index_node_entry_data )->local_descriptors_identifier,
value_64bit );
}
libcnotify_printf(
"%s: entry: %03" PRIu16 " local descriptors identifier\t\t: 0x%08" PRIx64 " (%" PRIu64 ")\n",
function,
entry_index,
value_64bit,
value_64bit );
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_descriptor_entry_32bit_t *) index_node_entry_data )->parent_identifier,
value_32bit );
}
else if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_descriptor_entry_64bit_t *) index_node_entry_data )->parent_identifier,
value_32bit );
}
libcnotify_printf(
"%s: entry: %03" PRIu16 " parent identifier\t\t\t: 0x%08" PRIx32 " (%" PRIu32 ")\n",
function,
entry_index,
value_32bit,
value_32bit );
if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_descriptor_entry_64bit_t *) index_node_entry_data )->unknown1,
value_32bit );
libcnotify_printf(
"%s: entry: %03" PRIu16 " unknown1\t\t\t\t: 0x%08" PRIx32 " (%" PRIu32 ")\n",
function,
entry_index,
value_32bit,
value_32bit );
}
}
/* Process offset and descriptor index node branch nodes and offset index node leaf nodes
*/
else
{
if( index_node->level != LIBPFF_INDEX_NODE_LEVEL_LEAF )
{
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_branch_entry_32bit_t *) index_node_entry_data )->back_pointer,
value_64bit );
}
else if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint64_little_endian(
( (pff_index_node_branch_entry_64bit_t *) index_node_entry_data )->back_pointer,
value_64bit );
}
libcnotify_printf(
"%s: entry: %03" PRIu16 " back pointer\t\t\t\t: 0x%08" PRIx64 "\n",
function,
entry_index,
value_64bit );
}
if( index_node->level == LIBPFF_INDEX_NODE_LEVEL_LEAF )
{
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_offset_entry_32bit_t *) index_node_entry_data )->file_offset,
value_64bit );
}
else if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint64_little_endian(
( (pff_index_node_offset_entry_64bit_t *) index_node_entry_data )->file_offset,
value_64bit );
}
}
else
{
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_branch_entry_32bit_t *) index_node_entry_data )->file_offset,
value_64bit );
}
else if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint64_little_endian(
( (pff_index_node_branch_entry_64bit_t *) index_node_entry_data )->file_offset,
value_64bit );
}
}
libcnotify_printf(
"%s: entry: %03" PRIu16 " file offset\t\t\t\t: 0x%08" PRIx64 " (%" PRIu64 ")\n",
function,
entry_index,
value_64bit,
value_64bit );
if( index_node->level == LIBPFF_INDEX_NODE_LEVEL_LEAF )
{
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_index_node_offset_entry_32bit_t *) index_node_entry_data )->data_size,
value_16bit );
}
else if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_index_node_offset_entry_64bit_t *) index_node_entry_data )->data_size,
value_16bit );
}
libcnotify_printf(
"%s: entry: %03" PRIu16 " data size\t\t\t\t: %" PRIu16 "\n",
function,
entry_index,
value_16bit );
if( io_handle->file_type == LIBPFF_FILE_TYPE_32BIT )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_index_node_offset_entry_32bit_t *) index_node_entry_data )->reference_count,
value_16bit );
}
else if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint16_little_endian(
( (pff_index_node_offset_entry_64bit_t *) index_node_entry_data )->reference_count,
value_16bit );
}
libcnotify_printf(
"%s: entry: %03" PRIu16 " reference count\t\t\t: %" PRIu16 "\n",
function,
entry_index,
value_16bit );
if( ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT )
|| ( io_handle->file_type == LIBPFF_FILE_TYPE_64BIT_4K_PAGE ) )
{
byte_stream_copy_to_uint32_little_endian(
( (pff_index_node_offset_entry_64bit_t *) index_node_entry_data )->data_allocation_table_file_offset,
value_32bit );
libcnotify_printf(
"%s: entry: %03" PRIu16 " data allocation table offset\t\t: 0x%08" PRIx32 " (%" PRIu32 ")\n",
function,
entry_index,
value_32bit,
value_32bit );
}
}
}
index_node_entry_data += index_node->entry_size;
index_node_entry_data_size -= index_node->entry_size;
}
libcnotify_printf(
"\n" );
}
#endif
index_node->entries_data = index_node->data;
return( 1 );
on_error:
if( index_node->data != NULL )
{
memory_free(
index_node->data );
index_node->data = NULL;
}
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 );
}