# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild from pkg_resources import parse_version from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO import collections if parse_version(ks_version) < parse_version('0.7'): raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version)) class ApmPartitionTable(KaitaiStruct): """ .. seealso:: Specification taken from https://en.wikipedia.org/wiki/Apple_Partition_Map """ SEQ_FIELDS = [] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): pass class PartitionEntry(KaitaiStruct): SEQ_FIELDS = ["magic", "reserved_1", "number_of_partitions", "partition_start", "partition_size", "partition_name", "partition_type", "data_start", "data_size", "partition_status", "boot_code_start", "boot_code_size", "boot_loader_address", "reserved_2", "boot_code_entry", "reserved_3", "boot_code_cksum", "processor_type"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['magic']['start'] = self._io.pos() self.magic = self._io.ensure_fixed_contents(b"\x50\x4D") self._debug['magic']['end'] = self._io.pos() self._debug['reserved_1']['start'] = self._io.pos() self.reserved_1 = self._io.read_bytes(2) self._debug['reserved_1']['end'] = self._io.pos() self._debug['number_of_partitions']['start'] = self._io.pos() self.number_of_partitions = self._io.read_u4be() self._debug['number_of_partitions']['end'] = self._io.pos() self._debug['partition_start']['start'] = self._io.pos() self.partition_start = self._io.read_u4be() self._debug['partition_start']['end'] = self._io.pos() self._debug['partition_size']['start'] = self._io.pos() self.partition_size = self._io.read_u4be() self._debug['partition_size']['end'] = self._io.pos() self._debug['partition_name']['start'] = self._io.pos() self.partition_name = (KaitaiStream.bytes_terminate(self._io.read_bytes(32), 0, False)).decode(u"ascii") self._debug['partition_name']['end'] = self._io.pos() self._debug['partition_type']['start'] = self._io.pos() self.partition_type = (KaitaiStream.bytes_terminate(self._io.read_bytes(32), 0, False)).decode(u"ascii") self._debug['partition_type']['end'] = self._io.pos() self._debug['data_start']['start'] = self._io.pos() self.data_start = self._io.read_u4be() self._debug['data_start']['end'] = self._io.pos() self._debug['data_size']['start'] = self._io.pos() self.data_size = self._io.read_u4be() self._debug['data_size']['end'] = self._io.pos() self._debug['partition_status']['start'] = self._io.pos() self.partition_status = self._io.read_u4be() self._debug['partition_status']['end'] = self._io.pos() self._debug['boot_code_start']['start'] = self._io.pos() self.boot_code_start = self._io.read_u4be() self._debug['boot_code_start']['end'] = self._io.pos() self._debug['boot_code_size']['start'] = self._io.pos() self.boot_code_size = self._io.read_u4be() self._debug['boot_code_size']['end'] = self._io.pos() self._debug['boot_loader_address']['start'] = self._io.pos() self.boot_loader_address = self._io.read_u4be() self._debug['boot_loader_address']['end'] = self._io.pos() self._debug['reserved_2']['start'] = self._io.pos() self.reserved_2 = self._io.read_bytes(4) self._debug['reserved_2']['end'] = self._io.pos() self._debug['boot_code_entry']['start'] = self._io.pos() self.boot_code_entry = self._io.read_u4be() self._debug['boot_code_entry']['end'] = self._io.pos() self._debug['reserved_3']['start'] = self._io.pos() self.reserved_3 = self._io.read_bytes(4) self._debug['reserved_3']['end'] = self._io.pos() self._debug['boot_code_cksum']['start'] = self._io.pos() self.boot_code_cksum = self._io.read_u4be() self._debug['boot_code_cksum']['end'] = self._io.pos() self._debug['processor_type']['start'] = self._io.pos() self.processor_type = (KaitaiStream.bytes_terminate(self._io.read_bytes(16), 0, False)).decode(u"ascii") self._debug['processor_type']['end'] = self._io.pos() @property def partition(self): if hasattr(self, '_m_partition'): return self._m_partition if hasattr(self, '_m_partition') else None if (self.partition_status & 1) != 0: io = self._root._io _pos = io.pos() io.seek((self.partition_start * self._root.sector_size)) self._debug['_m_partition']['start'] = io.pos() self._m_partition = io.read_bytes((self.partition_size * self._root.sector_size)) self._debug['_m_partition']['end'] = io.pos() io.seek(_pos) return self._m_partition if hasattr(self, '_m_partition') else None @property def data(self): if hasattr(self, '_m_data'): return self._m_data if hasattr(self, '_m_data') else None io = self._root._io _pos = io.pos() io.seek((self.data_start * self._root.sector_size)) self._debug['_m_data']['start'] = io.pos() self._m_data = io.read_bytes((self.data_size * self._root.sector_size)) self._debug['_m_data']['end'] = io.pos() io.seek(_pos) return self._m_data if hasattr(self, '_m_data') else None @property def boot_code(self): if hasattr(self, '_m_boot_code'): return self._m_boot_code if hasattr(self, '_m_boot_code') else None io = self._root._io _pos = io.pos() io.seek((self.boot_code_start * self._root.sector_size)) self._debug['_m_boot_code']['start'] = io.pos() self._m_boot_code = io.read_bytes(self.boot_code_size) self._debug['_m_boot_code']['end'] = io.pos() io.seek(_pos) return self._m_boot_code if hasattr(self, '_m_boot_code') else None @property def sector_size(self): """0x200 (512) bytes for disks, 0x1000 (4096) bytes is not supported by APM 0x800 (2048) bytes for CDROM """ if hasattr(self, '_m_sector_size'): return self._m_sector_size if hasattr(self, '_m_sector_size') else None self._m_sector_size = 512 return self._m_sector_size if hasattr(self, '_m_sector_size') else None @property def partition_lookup(self): """Every partition entry contains the number of partition entries. We parse the first entry, to know how many to parse, including the first one. No logic is given what to do if other entries have a different number. """ if hasattr(self, '_m_partition_lookup'): return self._m_partition_lookup if hasattr(self, '_m_partition_lookup') else None io = self._root._io _pos = io.pos() io.seek(self._root.sector_size) self._debug['_m_partition_lookup']['start'] = io.pos() self._raw__m_partition_lookup = io.read_bytes(self.sector_size) io = KaitaiStream(BytesIO(self._raw__m_partition_lookup)) self._m_partition_lookup = self._root.PartitionEntry(io, self, self._root) self._m_partition_lookup._read() self._debug['_m_partition_lookup']['end'] = io.pos() io.seek(_pos) return self._m_partition_lookup if hasattr(self, '_m_partition_lookup') else None @property def partition_entries(self): if hasattr(self, '_m_partition_entries'): return self._m_partition_entries if hasattr(self, '_m_partition_entries') else None io = self._root._io _pos = io.pos() io.seek(self._root.sector_size) self._debug['_m_partition_entries']['start'] = io.pos() self._raw__m_partition_entries = [None] * (self._root.partition_lookup.number_of_partitions) self._m_partition_entries = [None] * (self._root.partition_lookup.number_of_partitions) for i in range(self._root.partition_lookup.number_of_partitions): if not 'arr' in self._debug['_m_partition_entries']: self._debug['_m_partition_entries']['arr'] = [] self._debug['_m_partition_entries']['arr'].append({'start': io.pos()}) self._raw__m_partition_entries[i] = io.read_bytes(self.sector_size) io = KaitaiStream(BytesIO(self._raw__m_partition_entries[i])) _t__m_partition_entries = self._root.PartitionEntry(io, self, self._root) _t__m_partition_entries._read() self._m_partition_entries[i] = _t__m_partition_entries self._debug['_m_partition_entries']['arr'][i]['end'] = io.pos() self._debug['_m_partition_entries']['end'] = io.pos() io.seek(_pos) return self._m_partition_entries if hasattr(self, '_m_partition_entries') else None