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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
|
# 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
import zlib
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 Swf(KaitaiStruct):
"""SWF files are used by Adobe Flash (AKA Shockwave Flash, Macromedia
Flash) to encode rich interactive multimedia content and are,
essentially, a container for special bytecode instructions to play
back that content. In early 2000s, it was dominant rich multimedia
web format (.swf files were integrated into web pages and played
back with a browser plugin), but its usage largely declined in
2010s, as HTML5 and performant browser-native solutions
(i.e. JavaScript engines and graphical approaches, such as WebGL)
emerged.
There are a lot of versions of SWF (~36), format is somewhat
documented by Adobe.
.. seealso::
Source - https://www.adobe.com/content/dam/acom/en/devnet/pdf/swf-file-format-spec.pdf
"""
class Compressions(Enum):
zlib = 67
none = 70
lzma = 90
class TagType(Enum):
end_of_file = 0
place_object = 4
remove_object = 5
set_background_color = 9
define_sound = 14
place_object2 = 26
remove_object2 = 28
frame_label = 43
export_assets = 56
script_limits = 65
file_attributes = 69
place_object3 = 70
symbol_class = 76
metadata = 77
define_scaling_grid = 78
do_abc = 82
define_scene_and_frame_label_data = 86
SEQ_FIELDS = ["compression", "signature", "version", "len_file", "plain_body", "zlib_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['compression']['start'] = self._io.pos()
self.compression = KaitaiStream.resolve_enum(self._root.Compressions, self._io.read_u1())
self._debug['compression']['end'] = self._io.pos()
self._debug['signature']['start'] = self._io.pos()
self.signature = self._io.ensure_fixed_contents(b"\x57\x53")
self._debug['signature']['end'] = self._io.pos()
self._debug['version']['start'] = self._io.pos()
self.version = self._io.read_u1()
self._debug['version']['end'] = self._io.pos()
self._debug['len_file']['start'] = self._io.pos()
self.len_file = self._io.read_u4le()
self._debug['len_file']['end'] = self._io.pos()
if self.compression == self._root.Compressions.none:
self._debug['plain_body']['start'] = self._io.pos()
self._raw_plain_body = self._io.read_bytes_full()
io = KaitaiStream(BytesIO(self._raw_plain_body))
self.plain_body = self._root.SwfBody(io, self, self._root)
self.plain_body._read()
self._debug['plain_body']['end'] = self._io.pos()
if self.compression == self._root.Compressions.zlib:
self._debug['zlib_body']['start'] = self._io.pos()
self._raw__raw_zlib_body = self._io.read_bytes_full()
self._raw_zlib_body = zlib.decompress(self._raw__raw_zlib_body)
io = KaitaiStream(BytesIO(self._raw_zlib_body))
self.zlib_body = self._root.SwfBody(io, self, self._root)
self.zlib_body._read()
self._debug['zlib_body']['end'] = self._io.pos()
class Rgb(KaitaiStruct):
SEQ_FIELDS = ["r", "g", "b"]
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['r']['start'] = self._io.pos()
self.r = self._io.read_u1()
self._debug['r']['end'] = self._io.pos()
self._debug['g']['start'] = self._io.pos()
self.g = self._io.read_u1()
self._debug['g']['end'] = self._io.pos()
self._debug['b']['start'] = self._io.pos()
self.b = self._io.read_u1()
self._debug['b']['end'] = self._io.pos()
class DoAbcBody(KaitaiStruct):
SEQ_FIELDS = ["flags", "name", "abcdata"]
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['flags']['start'] = self._io.pos()
self.flags = self._io.read_u4le()
self._debug['flags']['end'] = self._io.pos()
self._debug['name']['start'] = self._io.pos()
self.name = (self._io.read_bytes_term(0, False, True, True)).decode(u"ASCII")
self._debug['name']['end'] = self._io.pos()
self._debug['abcdata']['start'] = self._io.pos()
self.abcdata = self._io.read_bytes_full()
self._debug['abcdata']['end'] = self._io.pos()
class SwfBody(KaitaiStruct):
SEQ_FIELDS = ["rect", "frame_rate", "frame_count", "file_attributes_tag", "tags"]
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['rect']['start'] = self._io.pos()
self.rect = self._root.Rect(self._io, self, self._root)
self.rect._read()
self._debug['rect']['end'] = self._io.pos()
self._debug['frame_rate']['start'] = self._io.pos()
self.frame_rate = self._io.read_u2le()
self._debug['frame_rate']['end'] = self._io.pos()
self._debug['frame_count']['start'] = self._io.pos()
self.frame_count = self._io.read_u2le()
self._debug['frame_count']['end'] = self._io.pos()
if self._root.version >= 8:
self._debug['file_attributes_tag']['start'] = self._io.pos()
self.file_attributes_tag = self._root.Tag(self._io, self, self._root)
self.file_attributes_tag._read()
self._debug['file_attributes_tag']['end'] = self._io.pos()
self._debug['tags']['start'] = self._io.pos()
self.tags = []
i = 0
while not self._io.is_eof():
if not 'arr' in self._debug['tags']:
self._debug['tags']['arr'] = []
self._debug['tags']['arr'].append({'start': self._io.pos()})
_t_tags = self._root.Tag(self._io, self, self._root)
_t_tags._read()
self.tags.append(_t_tags)
self._debug['tags']['arr'][len(self.tags) - 1]['end'] = self._io.pos()
i += 1
self._debug['tags']['end'] = self._io.pos()
class Rect(KaitaiStruct):
SEQ_FIELDS = ["b1", "skip"]
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['b1']['start'] = self._io.pos()
self.b1 = self._io.read_u1()
self._debug['b1']['end'] = self._io.pos()
self._debug['skip']['start'] = self._io.pos()
self.skip = self._io.read_bytes(self.num_bytes)
self._debug['skip']['end'] = self._io.pos()
@property
def num_bits(self):
if hasattr(self, '_m_num_bits'):
return self._m_num_bits if hasattr(self, '_m_num_bits') else None
self._m_num_bits = (self.b1 >> 3)
return self._m_num_bits if hasattr(self, '_m_num_bits') else None
@property
def num_bytes(self):
if hasattr(self, '_m_num_bytes'):
return self._m_num_bytes if hasattr(self, '_m_num_bytes') else None
self._m_num_bytes = (((self.num_bits * 4) - 3) + 7) // 8
return self._m_num_bytes if hasattr(self, '_m_num_bytes') else None
class Tag(KaitaiStruct):
SEQ_FIELDS = ["record_header", "tag_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['record_header']['start'] = self._io.pos()
self.record_header = self._root.RecordHeader(self._io, self, self._root)
self.record_header._read()
self._debug['record_header']['end'] = self._io.pos()
self._debug['tag_body']['start'] = self._io.pos()
_on = self.record_header.tag_type
if _on == self._root.TagType.define_sound:
self._raw_tag_body = self._io.read_bytes(self.record_header.len)
io = KaitaiStream(BytesIO(self._raw_tag_body))
self.tag_body = self._root.DefineSoundBody(io, self, self._root)
self.tag_body._read()
elif _on == self._root.TagType.set_background_color:
self._raw_tag_body = self._io.read_bytes(self.record_header.len)
io = KaitaiStream(BytesIO(self._raw_tag_body))
self.tag_body = self._root.Rgb(io, self, self._root)
self.tag_body._read()
elif _on == self._root.TagType.script_limits:
self._raw_tag_body = self._io.read_bytes(self.record_header.len)
io = KaitaiStream(BytesIO(self._raw_tag_body))
self.tag_body = self._root.ScriptLimitsBody(io, self, self._root)
self.tag_body._read()
elif _on == self._root.TagType.do_abc:
self._raw_tag_body = self._io.read_bytes(self.record_header.len)
io = KaitaiStream(BytesIO(self._raw_tag_body))
self.tag_body = self._root.DoAbcBody(io, self, self._root)
self.tag_body._read()
elif _on == self._root.TagType.export_assets:
self._raw_tag_body = self._io.read_bytes(self.record_header.len)
io = KaitaiStream(BytesIO(self._raw_tag_body))
self.tag_body = self._root.SymbolClassBody(io, self, self._root)
self.tag_body._read()
elif _on == self._root.TagType.symbol_class:
self._raw_tag_body = self._io.read_bytes(self.record_header.len)
io = KaitaiStream(BytesIO(self._raw_tag_body))
self.tag_body = self._root.SymbolClassBody(io, self, self._root)
self.tag_body._read()
else:
self.tag_body = self._io.read_bytes(self.record_header.len)
self._debug['tag_body']['end'] = self._io.pos()
class SymbolClassBody(KaitaiStruct):
SEQ_FIELDS = ["num_symbols", "symbols"]
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['num_symbols']['start'] = self._io.pos()
self.num_symbols = self._io.read_u2le()
self._debug['num_symbols']['end'] = self._io.pos()
self._debug['symbols']['start'] = self._io.pos()
self.symbols = [None] * (self.num_symbols)
for i in range(self.num_symbols):
if not 'arr' in self._debug['symbols']:
self._debug['symbols']['arr'] = []
self._debug['symbols']['arr'].append({'start': self._io.pos()})
_t_symbols = self._root.SymbolClassBody.Symbol(self._io, self, self._root)
_t_symbols._read()
self.symbols[i] = _t_symbols
self._debug['symbols']['arr'][i]['end'] = self._io.pos()
self._debug['symbols']['end'] = self._io.pos()
class Symbol(KaitaiStruct):
SEQ_FIELDS = ["tag", "name"]
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['tag']['start'] = self._io.pos()
self.tag = self._io.read_u2le()
self._debug['tag']['end'] = self._io.pos()
self._debug['name']['start'] = self._io.pos()
self.name = (self._io.read_bytes_term(0, False, True, True)).decode(u"ASCII")
self._debug['name']['end'] = self._io.pos()
class DefineSoundBody(KaitaiStruct):
class SamplingRates(Enum):
rate_5_5_khz = 0
rate_11_khz = 1
rate_22_khz = 2
rate_44_khz = 3
class Bps(Enum):
sound_8_bit = 0
sound_16_bit = 1
class Channels(Enum):
mono = 0
stereo = 1
SEQ_FIELDS = ["id", "format", "sampling_rate", "bits_per_sample", "num_channels", "num_samples"]
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['id']['start'] = self._io.pos()
self.id = self._io.read_u2le()
self._debug['id']['end'] = self._io.pos()
self._debug['format']['start'] = self._io.pos()
self.format = self._io.read_bits_int(4)
self._debug['format']['end'] = self._io.pos()
self._debug['sampling_rate']['start'] = self._io.pos()
self.sampling_rate = KaitaiStream.resolve_enum(self._root.DefineSoundBody.SamplingRates, self._io.read_bits_int(2))
self._debug['sampling_rate']['end'] = self._io.pos()
self._debug['bits_per_sample']['start'] = self._io.pos()
self.bits_per_sample = KaitaiStream.resolve_enum(self._root.DefineSoundBody.Bps, self._io.read_bits_int(1))
self._debug['bits_per_sample']['end'] = self._io.pos()
self._debug['num_channels']['start'] = self._io.pos()
self.num_channels = KaitaiStream.resolve_enum(self._root.DefineSoundBody.Channels, self._io.read_bits_int(1))
self._debug['num_channels']['end'] = self._io.pos()
self._io.align_to_byte()
self._debug['num_samples']['start'] = self._io.pos()
self.num_samples = self._io.read_u4le()
self._debug['num_samples']['end'] = self._io.pos()
class RecordHeader(KaitaiStruct):
SEQ_FIELDS = ["tag_code_and_length", "big_len"]
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['tag_code_and_length']['start'] = self._io.pos()
self.tag_code_and_length = self._io.read_u2le()
self._debug['tag_code_and_length']['end'] = self._io.pos()
if self.small_len == 63:
self._debug['big_len']['start'] = self._io.pos()
self.big_len = self._io.read_s4le()
self._debug['big_len']['end'] = self._io.pos()
@property
def tag_type(self):
if hasattr(self, '_m_tag_type'):
return self._m_tag_type if hasattr(self, '_m_tag_type') else None
self._m_tag_type = KaitaiStream.resolve_enum(self._root.TagType, (self.tag_code_and_length >> 6))
return self._m_tag_type if hasattr(self, '_m_tag_type') else None
@property
def small_len(self):
if hasattr(self, '_m_small_len'):
return self._m_small_len if hasattr(self, '_m_small_len') else None
self._m_small_len = (self.tag_code_and_length & 63)
return self._m_small_len if hasattr(self, '_m_small_len') else None
@property
def len(self):
if hasattr(self, '_m_len'):
return self._m_len if hasattr(self, '_m_len') else None
self._m_len = (self.big_len if self.small_len == 63 else self.small_len)
return self._m_len if hasattr(self, '_m_len') else None
class ScriptLimitsBody(KaitaiStruct):
SEQ_FIELDS = ["max_recursion_depth", "script_timeout_seconds"]
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['max_recursion_depth']['start'] = self._io.pos()
self.max_recursion_depth = self._io.read_u2le()
self._debug['max_recursion_depth']['end'] = self._io.pos()
self._debug['script_timeout_seconds']['start'] = self._io.pos()
self.script_timeout_seconds = self._io.read_u2le()
self._debug['script_timeout_seconds']['end'] = self._io.pos()
|
