1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
# 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
from enum import Enum
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 AppleSingleDouble(KaitaiStruct):
"""AppleSingle and AppleDouble files are used by certain Mac
applications (e.g. Finder) to store Mac-specific file attributes on
filesystems that do not support that.
Syntactically, both formats are the same, the only difference is how
they are being used:
* AppleSingle means that only one file will be created on external
filesystem that will hold both the data (AKA "data fork" in Apple
terminology), and the attributes (AKA "resource fork").
* AppleDouble means that two files will be created: a normal file
that keeps the data ("data fork") is kept separately from an
auxiliary file that contains attributes ("resource fork"), which
is kept with the same name, but starting with an extra dot and
underscore `._` to keep it hidden.
In modern practice (Mac OS X), Finder only uses AppleDouble to keep
compatibility with other OSes, as virtually nobody outside of Mac
understands how to access data in AppleSingle container.
.. seealso::
Source - http://kaiser-edv.de/documents/AppleSingle_AppleDouble.pdf
"""
class FileType(Enum):
apple_single = 333312
apple_double = 333319
SEQ_FIELDS = ["magic", "version", "reserved", "num_entries", "entries"]
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 = KaitaiStream.resolve_enum(self._root.FileType, self._io.read_u4be())
self._debug['magic']['end'] = self._io.pos()
self._debug['version']['start'] = self._io.pos()
self.version = self._io.read_u4be()
self._debug['version']['end'] = self._io.pos()
self._debug['reserved']['start'] = self._io.pos()
self.reserved = self._io.read_bytes(16)
self._debug['reserved']['end'] = self._io.pos()
self._debug['num_entries']['start'] = self._io.pos()
self.num_entries = self._io.read_u2be()
self._debug['num_entries']['end'] = self._io.pos()
self._debug['entries']['start'] = self._io.pos()
self.entries = [None] * (self.num_entries)
for i in range(self.num_entries):
if not 'arr' in self._debug['entries']:
self._debug['entries']['arr'] = []
self._debug['entries']['arr'].append({'start': self._io.pos()})
_t_entries = self._root.Entry(self._io, self, self._root)
_t_entries._read()
self.entries[i] = _t_entries
self._debug['entries']['arr'][i]['end'] = self._io.pos()
self._debug['entries']['end'] = self._io.pos()
class Entry(KaitaiStruct):
class Types(Enum):
data_fork = 1
resource_fork = 2
real_name = 3
comment = 4
icon_bw = 5
icon_color = 6
file_dates_info = 8
finder_info = 9
macintosh_file_info = 10
prodos_file_info = 11
msdos_file_info = 12
afp_short_name = 13
afp_file_info = 14
afp_directory_id = 15
SEQ_FIELDS = ["type", "ofs_body", "len_body"]
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['type']['start'] = self._io.pos()
self.type = KaitaiStream.resolve_enum(self._root.Entry.Types, self._io.read_u4be())
self._debug['type']['end'] = self._io.pos()
self._debug['ofs_body']['start'] = self._io.pos()
self.ofs_body = self._io.read_u4be()
self._debug['ofs_body']['end'] = self._io.pos()
self._debug['len_body']['start'] = self._io.pos()
self.len_body = self._io.read_u4be()
self._debug['len_body']['end'] = self._io.pos()
@property
def body(self):
if hasattr(self, '_m_body'):
return self._m_body if hasattr(self, '_m_body') else None
_pos = self._io.pos()
self._io.seek(self.ofs_body)
self._debug['_m_body']['start'] = self._io.pos()
_on = self.type
if _on == self._root.Entry.Types.finder_info:
self._raw__m_body = self._io.read_bytes(self.len_body)
io = KaitaiStream(BytesIO(self._raw__m_body))
self._m_body = self._root.FinderInfo(io, self, self._root)
self._m_body._read()
else:
self._m_body = self._io.read_bytes(self.len_body)
self._debug['_m_body']['end'] = self._io.pos()
self._io.seek(_pos)
return self._m_body if hasattr(self, '_m_body') else None
class FinderInfo(KaitaiStruct):
"""Information specific to Finder.
.. seealso::
older Inside Macintosh, Volume II page 84 or Volume IV page 104.
"""
SEQ_FIELDS = ["file_type", "file_creator", "flags", "location", "folder_id"]
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_type']['start'] = self._io.pos()
self.file_type = self._io.read_bytes(4)
self._debug['file_type']['end'] = self._io.pos()
self._debug['file_creator']['start'] = self._io.pos()
self.file_creator = self._io.read_bytes(4)
self._debug['file_creator']['end'] = self._io.pos()
self._debug['flags']['start'] = self._io.pos()
self.flags = self._io.read_u2be()
self._debug['flags']['end'] = self._io.pos()
self._debug['location']['start'] = self._io.pos()
self.location = self._root.Point(self._io, self, self._root)
self.location._read()
self._debug['location']['end'] = self._io.pos()
self._debug['folder_id']['start'] = self._io.pos()
self.folder_id = self._io.read_u2be()
self._debug['folder_id']['end'] = self._io.pos()
class Point(KaitaiStruct):
"""Specifies 2D coordinate in QuickDraw grid."""
SEQ_FIELDS = ["x", "y"]
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['x']['start'] = self._io.pos()
self.x = self._io.read_u2be()
self._debug['x']['end'] = self._io.pos()
self._debug['y']['start'] = self._io.pos()
self.y = self._io.read_u2be()
self._debug['y']['end'] = self._io.pos()
|
