diff options
| author | Xusheng <xusheng@vector35.com> | 2021-07-01 12:34:30 +0800 |
|---|---|---|
| committer | Xusheng Li <xushengli@protonmail.com> | 2021-07-05 10:11:47 +0800 |
| commit | 13ff200ba134b8704f37eca99c42b70dab0d17dc (patch) | |
| tree | 876b3db3c53f704b31152aeaede1f2edc9d27b24 /python/examples/kaitai/vfat.py | |
| parent | 4039a800349dcd587833d3e27d9137e4649818f4 (diff) | |
Remove snippet and kaitai plugin. Note their individual links.
Diffstat (limited to 'python/examples/kaitai/vfat.py')
| -rw-r--r-- | python/examples/kaitai/vfat.py | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/python/examples/kaitai/vfat.py b/python/examples/kaitai/vfat.py deleted file mode 100644 index ff6b2cbb..00000000 --- a/python/examples/kaitai/vfat.py +++ /dev/null @@ -1,359 +0,0 @@ -# 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 Vfat(KaitaiStruct): - SEQ_FIELDS = ["boot_sector"] - 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['boot_sector']['start'] = self._io.pos() - self.boot_sector = self._root.BootSector(self._io, self, self._root) - self.boot_sector._read() - self._debug['boot_sector']['end'] = self._io.pos() - - class ExtBiosParamBlockFat32(KaitaiStruct): - """Extended BIOS Parameter Block for FAT32.""" - SEQ_FIELDS = ["ls_per_fat", "has_active_fat", "reserved1", "active_fat_id", "reserved2", "fat_version", "root_dir_start_clus", "ls_fs_info", "boot_sectors_copy_start_ls", "reserved3", "phys_drive_num", "reserved4", "ext_boot_sign", "volume_id", "partition_volume_label", "fs_type_str"] - 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['ls_per_fat']['start'] = self._io.pos() - self.ls_per_fat = self._io.read_u4le() - self._debug['ls_per_fat']['end'] = self._io.pos() - self._debug['has_active_fat']['start'] = self._io.pos() - self.has_active_fat = self._io.read_bits_int(1) != 0 - self._debug['has_active_fat']['end'] = self._io.pos() - self._debug['reserved1']['start'] = self._io.pos() - self.reserved1 = self._io.read_bits_int(3) - self._debug['reserved1']['end'] = self._io.pos() - self._debug['active_fat_id']['start'] = self._io.pos() - self.active_fat_id = self._io.read_bits_int(4) - self._debug['active_fat_id']['end'] = self._io.pos() - self._io.align_to_byte() - self._debug['reserved2']['start'] = self._io.pos() - self.reserved2 = self._io.ensure_fixed_contents(b"\x00") - self._debug['reserved2']['end'] = self._io.pos() - self._debug['fat_version']['start'] = self._io.pos() - self.fat_version = self._io.read_u2le() - self._debug['fat_version']['end'] = self._io.pos() - self._debug['root_dir_start_clus']['start'] = self._io.pos() - self.root_dir_start_clus = self._io.read_u4le() - self._debug['root_dir_start_clus']['end'] = self._io.pos() - self._debug['ls_fs_info']['start'] = self._io.pos() - self.ls_fs_info = self._io.read_u2le() - self._debug['ls_fs_info']['end'] = self._io.pos() - self._debug['boot_sectors_copy_start_ls']['start'] = self._io.pos() - self.boot_sectors_copy_start_ls = self._io.read_u2le() - self._debug['boot_sectors_copy_start_ls']['end'] = self._io.pos() - self._debug['reserved3']['start'] = self._io.pos() - self.reserved3 = self._io.read_bytes(12) - self._debug['reserved3']['end'] = self._io.pos() - self._debug['phys_drive_num']['start'] = self._io.pos() - self.phys_drive_num = self._io.read_u1() - self._debug['phys_drive_num']['end'] = self._io.pos() - self._debug['reserved4']['start'] = self._io.pos() - self.reserved4 = self._io.read_u1() - self._debug['reserved4']['end'] = self._io.pos() - self._debug['ext_boot_sign']['start'] = self._io.pos() - self.ext_boot_sign = self._io.read_u1() - self._debug['ext_boot_sign']['end'] = self._io.pos() - self._debug['volume_id']['start'] = self._io.pos() - self.volume_id = self._io.read_bytes(4) - self._debug['volume_id']['end'] = self._io.pos() - self._debug['partition_volume_label']['start'] = self._io.pos() - self.partition_volume_label = (KaitaiStream.bytes_strip_right(self._io.read_bytes(11), 32)).decode(u"ASCII") - self._debug['partition_volume_label']['end'] = self._io.pos() - self._debug['fs_type_str']['start'] = self._io.pos() - self.fs_type_str = (KaitaiStream.bytes_strip_right(self._io.read_bytes(8), 32)).decode(u"ASCII") - self._debug['fs_type_str']['end'] = self._io.pos() - - - class BootSector(KaitaiStruct): - SEQ_FIELDS = ["jmp_instruction", "oem_name", "bpb", "ebpb_fat16", "ebpb_fat32"] - 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['jmp_instruction']['start'] = self._io.pos() - self.jmp_instruction = self._io.read_bytes(3) - self._debug['jmp_instruction']['end'] = self._io.pos() - self._debug['oem_name']['start'] = self._io.pos() - self.oem_name = (KaitaiStream.bytes_strip_right(self._io.read_bytes(8), 32)).decode(u"ASCII") - self._debug['oem_name']['end'] = self._io.pos() - self._debug['bpb']['start'] = self._io.pos() - self.bpb = self._root.BiosParamBlock(self._io, self, self._root) - self.bpb._read() - self._debug['bpb']['end'] = self._io.pos() - if not (self.is_fat32): - self._debug['ebpb_fat16']['start'] = self._io.pos() - self.ebpb_fat16 = self._root.ExtBiosParamBlockFat16(self._io, self, self._root) - self.ebpb_fat16._read() - self._debug['ebpb_fat16']['end'] = self._io.pos() - - if self.is_fat32: - self._debug['ebpb_fat32']['start'] = self._io.pos() - self.ebpb_fat32 = self._root.ExtBiosParamBlockFat32(self._io, self, self._root) - self.ebpb_fat32._read() - self._debug['ebpb_fat32']['end'] = self._io.pos() - - - @property - def pos_fats(self): - """Offset of FATs in bytes from start of filesystem.""" - if hasattr(self, '_m_pos_fats'): - return self._m_pos_fats if hasattr(self, '_m_pos_fats') else None - - self._m_pos_fats = (self.bpb.bytes_per_ls * self.bpb.num_reserved_ls) - return self._m_pos_fats if hasattr(self, '_m_pos_fats') else None - - @property - def ls_per_fat(self): - if hasattr(self, '_m_ls_per_fat'): - return self._m_ls_per_fat if hasattr(self, '_m_ls_per_fat') else None - - self._m_ls_per_fat = (self.ebpb_fat32.ls_per_fat if self.is_fat32 else self.bpb.ls_per_fat) - return self._m_ls_per_fat if hasattr(self, '_m_ls_per_fat') else None - - @property - def ls_per_root_dir(self): - """Size of root directory in logical sectors. - - .. seealso:: - FAT: General Overview of On-Disk Format, section "FAT Data Structure" - """ - if hasattr(self, '_m_ls_per_root_dir'): - return self._m_ls_per_root_dir if hasattr(self, '_m_ls_per_root_dir') else None - - self._m_ls_per_root_dir = (((self.bpb.max_root_dir_rec * 32) + self.bpb.bytes_per_ls) - 1) // self.bpb.bytes_per_ls - return self._m_ls_per_root_dir if hasattr(self, '_m_ls_per_root_dir') else None - - @property - def is_fat32(self): - """Determines if filesystem is FAT32 (true) or FAT12/16 (false) - by analyzing some preliminary conditions in BPB. Used to - determine whether we should parse post-BPB data as - `ext_bios_param_block_fat16` or `ext_bios_param_block_fat32`. - """ - if hasattr(self, '_m_is_fat32'): - return self._m_is_fat32 if hasattr(self, '_m_is_fat32') else None - - self._m_is_fat32 = self.bpb.max_root_dir_rec == 0 - return self._m_is_fat32 if hasattr(self, '_m_is_fat32') else None - - @property - def size_fat(self): - """Size of one FAT in bytes.""" - if hasattr(self, '_m_size_fat'): - return self._m_size_fat if hasattr(self, '_m_size_fat') else None - - self._m_size_fat = (self.bpb.bytes_per_ls * self.ls_per_fat) - return self._m_size_fat if hasattr(self, '_m_size_fat') else None - - @property - def pos_root_dir(self): - """Offset of root directory in bytes from start of filesystem.""" - if hasattr(self, '_m_pos_root_dir'): - return self._m_pos_root_dir if hasattr(self, '_m_pos_root_dir') else None - - self._m_pos_root_dir = (self.bpb.bytes_per_ls * (self.bpb.num_reserved_ls + (self.ls_per_fat * self.bpb.num_fats))) - return self._m_pos_root_dir if hasattr(self, '_m_pos_root_dir') else None - - @property - def size_root_dir(self): - """Size of root directory in bytes.""" - if hasattr(self, '_m_size_root_dir'): - return self._m_size_root_dir if hasattr(self, '_m_size_root_dir') else None - - self._m_size_root_dir = (self.ls_per_root_dir * self.bpb.bytes_per_ls) - return self._m_size_root_dir if hasattr(self, '_m_size_root_dir') else None - - - class BiosParamBlock(KaitaiStruct): - SEQ_FIELDS = ["bytes_per_ls", "ls_per_clus", "num_reserved_ls", "num_fats", "max_root_dir_rec", "total_ls_2", "media_code", "ls_per_fat", "ps_per_track", "num_heads", "num_hidden_sectors", "total_ls_4"] - 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['bytes_per_ls']['start'] = self._io.pos() - self.bytes_per_ls = self._io.read_u2le() - self._debug['bytes_per_ls']['end'] = self._io.pos() - self._debug['ls_per_clus']['start'] = self._io.pos() - self.ls_per_clus = self._io.read_u1() - self._debug['ls_per_clus']['end'] = self._io.pos() - self._debug['num_reserved_ls']['start'] = self._io.pos() - self.num_reserved_ls = self._io.read_u2le() - self._debug['num_reserved_ls']['end'] = self._io.pos() - self._debug['num_fats']['start'] = self._io.pos() - self.num_fats = self._io.read_u1() - self._debug['num_fats']['end'] = self._io.pos() - self._debug['max_root_dir_rec']['start'] = self._io.pos() - self.max_root_dir_rec = self._io.read_u2le() - self._debug['max_root_dir_rec']['end'] = self._io.pos() - self._debug['total_ls_2']['start'] = self._io.pos() - self.total_ls_2 = self._io.read_u2le() - self._debug['total_ls_2']['end'] = self._io.pos() - self._debug['media_code']['start'] = self._io.pos() - self.media_code = self._io.read_u1() - self._debug['media_code']['end'] = self._io.pos() - self._debug['ls_per_fat']['start'] = self._io.pos() - self.ls_per_fat = self._io.read_u2le() - self._debug['ls_per_fat']['end'] = self._io.pos() - self._debug['ps_per_track']['start'] = self._io.pos() - self.ps_per_track = self._io.read_u2le() - self._debug['ps_per_track']['end'] = self._io.pos() - self._debug['num_heads']['start'] = self._io.pos() - self.num_heads = self._io.read_u2le() - self._debug['num_heads']['end'] = self._io.pos() - self._debug['num_hidden_sectors']['start'] = self._io.pos() - self.num_hidden_sectors = self._io.read_u4le() - self._debug['num_hidden_sectors']['end'] = self._io.pos() - self._debug['total_ls_4']['start'] = self._io.pos() - self.total_ls_4 = self._io.read_u4le() - self._debug['total_ls_4']['end'] = self._io.pos() - - - class RootDirectoryRec(KaitaiStruct): - SEQ_FIELDS = ["file_name", "attribute", "reserved", "time", "date", "start_clus", "file_size"] - 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['file_name']['start'] = self._io.pos() - self.file_name = self._io.read_bytes(11) - self._debug['file_name']['end'] = self._io.pos() - self._debug['attribute']['start'] = self._io.pos() - self.attribute = self._io.read_u1() - self._debug['attribute']['end'] = self._io.pos() - self._debug['reserved']['start'] = self._io.pos() - self.reserved = self._io.read_bytes(10) - self._debug['reserved']['end'] = self._io.pos() - self._debug['time']['start'] = self._io.pos() - self.time = self._io.read_u2le() - self._debug['time']['end'] = self._io.pos() - self._debug['date']['start'] = self._io.pos() - self.date = self._io.read_u2le() - self._debug['date']['end'] = self._io.pos() - self._debug['start_clus']['start'] = self._io.pos() - self.start_clus = self._io.read_u2le() - self._debug['start_clus']['end'] = self._io.pos() - self._debug['file_size']['start'] = self._io.pos() - self.file_size = self._io.read_u4le() - self._debug['file_size']['end'] = self._io.pos() - - - class RootDirectory(KaitaiStruct): - SEQ_FIELDS = ["records"] - 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['records']['start'] = self._io.pos() - self.records = [None] * (self._root.boot_sector.bpb.max_root_dir_rec) - for i in range(self._root.boot_sector.bpb.max_root_dir_rec): - if not 'arr' in self._debug['records']: - self._debug['records']['arr'] = [] - self._debug['records']['arr'].append({'start': self._io.pos()}) - _t_records = self._root.RootDirectoryRec(self._io, self, self._root) - _t_records._read() - self.records[i] = _t_records - self._debug['records']['arr'][i]['end'] = self._io.pos() - - self._debug['records']['end'] = self._io.pos() - - - class ExtBiosParamBlockFat16(KaitaiStruct): - """Extended BIOS Parameter Block (DOS 4.0+, OS/2 1.0+). Used only - for FAT12 and FAT16. - """ - SEQ_FIELDS = ["phys_drive_num", "reserved1", "ext_boot_sign", "volume_id", "partition_volume_label", "fs_type_str"] - 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['phys_drive_num']['start'] = self._io.pos() - self.phys_drive_num = self._io.read_u1() - self._debug['phys_drive_num']['end'] = self._io.pos() - self._debug['reserved1']['start'] = self._io.pos() - self.reserved1 = self._io.read_u1() - self._debug['reserved1']['end'] = self._io.pos() - self._debug['ext_boot_sign']['start'] = self._io.pos() - self.ext_boot_sign = self._io.read_u1() - self._debug['ext_boot_sign']['end'] = self._io.pos() - self._debug['volume_id']['start'] = self._io.pos() - self.volume_id = self._io.read_bytes(4) - self._debug['volume_id']['end'] = self._io.pos() - self._debug['partition_volume_label']['start'] = self._io.pos() - self.partition_volume_label = (KaitaiStream.bytes_strip_right(self._io.read_bytes(11), 32)).decode(u"ASCII") - self._debug['partition_volume_label']['end'] = self._io.pos() - self._debug['fs_type_str']['start'] = self._io.pos() - self.fs_type_str = (KaitaiStream.bytes_strip_right(self._io.read_bytes(8), 32)).decode(u"ASCII") - self._debug['fs_type_str']['end'] = self._io.pos() - - - @property - def fats(self): - if hasattr(self, '_m_fats'): - return self._m_fats if hasattr(self, '_m_fats') else None - - _pos = self._io.pos() - self._io.seek(self.boot_sector.pos_fats) - self._debug['_m_fats']['start'] = self._io.pos() - self._m_fats = [None] * (self.boot_sector.bpb.num_fats) - for i in range(self.boot_sector.bpb.num_fats): - if not 'arr' in self._debug['_m_fats']: - self._debug['_m_fats']['arr'] = [] - self._debug['_m_fats']['arr'].append({'start': self._io.pos()}) - self._m_fats[i] = self._io.read_bytes(self.boot_sector.size_fat) - self._debug['_m_fats']['arr'][i]['end'] = self._io.pos() - - self._debug['_m_fats']['end'] = self._io.pos() - self._io.seek(_pos) - return self._m_fats if hasattr(self, '_m_fats') else None - - @property - def root_dir(self): - if hasattr(self, '_m_root_dir'): - return self._m_root_dir if hasattr(self, '_m_root_dir') else None - - _pos = self._io.pos() - self._io.seek(self.boot_sector.pos_root_dir) - self._debug['_m_root_dir']['start'] = self._io.pos() - self._raw__m_root_dir = self._io.read_bytes(self.boot_sector.size_root_dir) - io = KaitaiStream(BytesIO(self._raw__m_root_dir)) - self._m_root_dir = self._root.RootDirectory(io, self, self._root) - self._m_root_dir._read() - self._debug['_m_root_dir']['end'] = self._io.pos() - self._io.seek(_pos) - return self._m_root_dir if hasattr(self, '_m_root_dir') else None - - |
