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54256267 PH |
1 | from __future__ import unicode_literals |
2 | ||
3 | import collections | |
4 | import io | |
54256267 PH |
5 | import zlib |
6 | ||
70f767dc PH |
7 | from .utils import ( |
8 | compat_str, | |
9 | ExtractorError, | |
c13bf7c8 | 10 | struct_unpack, |
70f767dc | 11 | ) |
54256267 PH |
12 | |
13 | ||
0cb20563 PH |
14 | def _extract_tags(file_contents): |
15 | if file_contents[1:3] != b'WS': | |
16 | raise ExtractorError( | |
17 | 'Not an SWF file; header is %r' % file_contents[:3]) | |
18 | if file_contents[:1] == b'C': | |
19 | content = zlib.decompress(file_contents[8:]) | |
20 | else: | |
21 | raise NotImplementedError( | |
22 | 'Unsupported compression format %r' % | |
23 | file_contents[:1]) | |
24 | ||
25 | # Determine number of bits in framesize rectangle | |
c13bf7c8 | 26 | framesize_nbits = struct_unpack('!B', content[:1])[0] >> 3 |
0cb20563 PH |
27 | framesize_len = (5 + 4 * framesize_nbits + 7) // 8 |
28 | ||
29 | pos = framesize_len + 2 + 2 | |
54256267 | 30 | while pos < len(content): |
c13bf7c8 | 31 | header16 = struct_unpack('<H', content[pos:pos + 2])[0] |
54256267 PH |
32 | pos += 2 |
33 | tag_code = header16 >> 6 | |
34 | tag_len = header16 & 0x3f | |
35 | if tag_len == 0x3f: | |
c13bf7c8 | 36 | tag_len = struct_unpack('<I', content[pos:pos + 4])[0] |
54256267 | 37 | pos += 4 |
0cb20563 PH |
38 | assert pos + tag_len <= len(content), \ |
39 | ('Tag %d ends at %d+%d - that\'s longer than the file (%d)' | |
40 | % (tag_code, pos, tag_len, len(content))) | |
54256267 PH |
41 | yield (tag_code, content[pos:pos + tag_len]) |
42 | pos += tag_len | |
43 | ||
44 | ||
45 | class _AVMClass_Object(object): | |
46 | def __init__(self, avm_class): | |
47 | self.avm_class = avm_class | |
48 | ||
49 | def __repr__(self): | |
50 | return '%s#%x' % (self.avm_class.name, id(self)) | |
51 | ||
52 | ||
0d989011 PH |
53 | class _ScopeDict(dict): |
54 | def __init__(self, avm_class): | |
55 | super(_ScopeDict, self).__init__() | |
56 | self.avm_class = avm_class | |
57 | ||
58 | def __repr__(self): | |
59 | return '%s__Scope(%s)' % ( | |
60 | self.avm_class.name, | |
61 | super(_ScopeDict, self).__repr__()) | |
62 | ||
63 | ||
54256267 | 64 | class _AVMClass(object): |
fbf94a78 | 65 | def __init__(self, name_idx, name, static_properties=None): |
54256267 PH |
66 | self.name_idx = name_idx |
67 | self.name = name | |
68 | self.method_names = {} | |
69 | self.method_idxs = {} | |
70 | self.methods = {} | |
71 | self.method_pyfunctions = {} | |
fbf94a78 | 72 | self.static_properties = static_properties if static_properties else {} |
70f767dc | 73 | |
0d989011 | 74 | self.variables = _ScopeDict(self) |
cd9ad1d7 | 75 | self.constants = {} |
54256267 PH |
76 | |
77 | def make_object(self): | |
78 | return _AVMClass_Object(self) | |
79 | ||
01b4b745 PH |
80 | def __repr__(self): |
81 | return '_AVMClass(%s)' % (self.name) | |
82 | ||
83 | def register_methods(self, methods): | |
84 | self.method_names.update(methods.items()) | |
85 | self.method_idxs.update(dict( | |
86 | (idx, name) | |
87 | for name, idx in methods.items())) | |
88 | ||
54256267 | 89 | |
decf2ae4 PH |
90 | class _Multiname(object): |
91 | def __init__(self, kind): | |
92 | self.kind = kind | |
93 | ||
94 | def __repr__(self): | |
95 | return '[MULTINAME kind: 0x%x]' % self.kind | |
96 | ||
97 | ||
54256267 PH |
98 | def _read_int(reader): |
99 | res = 0 | |
100 | shift = 0 | |
101 | for _ in range(5): | |
102 | buf = reader.read(1) | |
103 | assert len(buf) == 1 | |
c13bf7c8 | 104 | b = struct_unpack('<B', buf)[0] |
54256267 PH |
105 | res = res | ((b & 0x7f) << shift) |
106 | if b & 0x80 == 0: | |
107 | break | |
108 | shift += 7 | |
109 | return res | |
110 | ||
111 | ||
112 | def _u30(reader): | |
113 | res = _read_int(reader) | |
114 | assert res & 0xf0000000 == 0 | |
115 | return res | |
351f3738 | 116 | _u32 = _read_int |
54256267 PH |
117 | |
118 | ||
119 | def _s32(reader): | |
120 | v = _read_int(reader) | |
121 | if v & 0x80000000 != 0: | |
122 | v = - ((v ^ 0xffffffff) + 1) | |
123 | return v | |
124 | ||
125 | ||
126 | def _s24(reader): | |
127 | bs = reader.read(3) | |
128 | assert len(bs) == 3 | |
e75c24e8 | 129 | last_byte = b'\xff' if (ord(bs[2:3]) >= 0x80) else b'\x00' |
c13bf7c8 | 130 | return struct_unpack('<i', bs + last_byte)[0] |
54256267 PH |
131 | |
132 | ||
133 | def _read_string(reader): | |
134 | slen = _u30(reader) | |
135 | resb = reader.read(slen) | |
136 | assert len(resb) == slen | |
137 | return resb.decode('utf-8') | |
138 | ||
139 | ||
140 | def _read_bytes(count, reader): | |
0cb20563 | 141 | assert count >= 0 |
54256267 PH |
142 | resb = reader.read(count) |
143 | assert len(resb) == count | |
144 | return resb | |
145 | ||
146 | ||
147 | def _read_byte(reader): | |
148 | resb = _read_bytes(1, reader=reader) | |
c13bf7c8 | 149 | res = struct_unpack('<B', resb)[0] |
54256267 PH |
150 | return res |
151 | ||
152 | ||
3cbcff8a | 153 | StringClass = _AVMClass('(no name idx)', 'String') |
6b592d93 | 154 | ByteArrayClass = _AVMClass('(no name idx)', 'ByteArray') |
fbf94a78 PH |
155 | TimerClass = _AVMClass('(no name idx)', 'Timer') |
156 | TimerEventClass = _AVMClass('(no name idx)', 'TimerEvent', {'TIMER': 'timer'}) | |
6b592d93 PH |
157 | _builtin_classes = { |
158 | StringClass.name: StringClass, | |
159 | ByteArrayClass.name: ByteArrayClass, | |
fbf94a78 PH |
160 | TimerClass.name: TimerClass, |
161 | TimerEventClass.name: TimerEventClass, | |
6b592d93 | 162 | } |
3cbcff8a PH |
163 | |
164 | ||
4686ae4b | 165 | class _Undefined(object): |
fbf94a78 | 166 | def __bool__(self): |
4686ae4b | 167 | return False |
fbf94a78 | 168 | __nonzero__ = __bool__ |
4686ae4b PH |
169 | |
170 | def __hash__(self): | |
171 | return 0 | |
172 | ||
173 | undefined = _Undefined() | |
174 | ||
175 | ||
54256267 PH |
176 | class SWFInterpreter(object): |
177 | def __init__(self, file_contents): | |
fbf94a78 PH |
178 | self._patched_functions = { |
179 | (TimerClass, 'addEventListener'): lambda params: undefined, | |
180 | } | |
54256267 | 181 | code_tag = next(tag |
0cb20563 | 182 | for tag_code, tag in _extract_tags(file_contents) |
54256267 PH |
183 | if tag_code == 82) |
184 | p = code_tag.index(b'\0', 4) + 1 | |
185 | code_reader = io.BytesIO(code_tag[p:]) | |
186 | ||
187 | # Parse ABC (AVM2 ByteCode) | |
188 | ||
189 | # Define a couple convenience methods | |
190 | u30 = lambda *args: _u30(*args, reader=code_reader) | |
191 | s32 = lambda *args: _s32(*args, reader=code_reader) | |
192 | u32 = lambda *args: _u32(*args, reader=code_reader) | |
193 | read_bytes = lambda *args: _read_bytes(*args, reader=code_reader) | |
194 | read_byte = lambda *args: _read_byte(*args, reader=code_reader) | |
195 | ||
196 | # minor_version + major_version | |
197 | read_bytes(2 + 2) | |
198 | ||
199 | # Constant pool | |
200 | int_count = u30() | |
cd9ad1d7 | 201 | self.constant_ints = [0] |
54256267 | 202 | for _c in range(1, int_count): |
cd9ad1d7 PH |
203 | self.constant_ints.append(s32()) |
204 | self.constant_uints = [0] | |
54256267 PH |
205 | uint_count = u30() |
206 | for _c in range(1, uint_count): | |
cd9ad1d7 | 207 | self.constant_uints.append(u32()) |
54256267 | 208 | double_count = u30() |
0cb20563 | 209 | read_bytes(max(0, (double_count - 1)) * 8) |
54256267 | 210 | string_count = u30() |
70f767dc | 211 | self.constant_strings = [''] |
54256267 PH |
212 | for _c in range(1, string_count): |
213 | s = _read_string(code_reader) | |
70f767dc | 214 | self.constant_strings.append(s) |
54256267 PH |
215 | namespace_count = u30() |
216 | for _c in range(1, namespace_count): | |
217 | read_bytes(1) # kind | |
218 | u30() # name | |
219 | ns_set_count = u30() | |
220 | for _c in range(1, ns_set_count): | |
221 | count = u30() | |
222 | for _c2 in range(count): | |
223 | u30() | |
224 | multiname_count = u30() | |
225 | MULTINAME_SIZES = { | |
226 | 0x07: 2, # QName | |
227 | 0x0d: 2, # QNameA | |
228 | 0x0f: 1, # RTQName | |
229 | 0x10: 1, # RTQNameA | |
230 | 0x11: 0, # RTQNameL | |
231 | 0x12: 0, # RTQNameLA | |
232 | 0x09: 2, # Multiname | |
233 | 0x0e: 2, # MultinameA | |
234 | 0x1b: 1, # MultinameL | |
235 | 0x1c: 1, # MultinameLA | |
236 | } | |
237 | self.multinames = [''] | |
238 | for _c in range(1, multiname_count): | |
239 | kind = u30() | |
240 | assert kind in MULTINAME_SIZES, 'Invalid multiname kind %r' % kind | |
241 | if kind == 0x07: | |
242 | u30() # namespace_idx | |
243 | name_idx = u30() | |
70f767dc | 244 | self.multinames.append(self.constant_strings[name_idx]) |
4baafa22 PH |
245 | elif kind == 0x09: |
246 | name_idx = u30() | |
247 | u30() | |
248 | self.multinames.append(self.constant_strings[name_idx]) | |
54256267 | 249 | else: |
decf2ae4 | 250 | self.multinames.append(_Multiname(kind)) |
54256267 PH |
251 | for _c2 in range(MULTINAME_SIZES[kind]): |
252 | u30() | |
253 | ||
254 | # Methods | |
255 | method_count = u30() | |
256 | MethodInfo = collections.namedtuple( | |
257 | 'MethodInfo', | |
258 | ['NEED_ARGUMENTS', 'NEED_REST']) | |
259 | method_infos = [] | |
260 | for method_id in range(method_count): | |
261 | param_count = u30() | |
262 | u30() # return type | |
263 | for _ in range(param_count): | |
264 | u30() # param type | |
265 | u30() # name index (always 0 for youtube) | |
266 | flags = read_byte() | |
267 | if flags & 0x08 != 0: | |
268 | # Options present | |
269 | option_count = u30() | |
270 | for c in range(option_count): | |
271 | u30() # val | |
272 | read_bytes(1) # kind | |
273 | if flags & 0x80 != 0: | |
274 | # Param names present | |
275 | for _ in range(param_count): | |
276 | u30() # param name | |
277 | mi = MethodInfo(flags & 0x01 != 0, flags & 0x04 != 0) | |
278 | method_infos.append(mi) | |
279 | ||
280 | # Metadata | |
281 | metadata_count = u30() | |
282 | for _c in range(metadata_count): | |
283 | u30() # name | |
284 | item_count = u30() | |
285 | for _c2 in range(item_count): | |
286 | u30() # key | |
287 | u30() # value | |
288 | ||
289 | def parse_traits_info(): | |
290 | trait_name_idx = u30() | |
291 | kind_full = read_byte() | |
292 | kind = kind_full & 0x0f | |
293 | attrs = kind_full >> 4 | |
294 | methods = {} | |
cd9ad1d7 PH |
295 | constants = None |
296 | if kind == 0x00: # Slot | |
54256267 PH |
297 | u30() # Slot id |
298 | u30() # type_name_idx | |
299 | vindex = u30() | |
300 | if vindex != 0: | |
301 | read_byte() # vkind | |
cd9ad1d7 PH |
302 | elif kind == 0x06: # Const |
303 | u30() # Slot id | |
304 | u30() # type_name_idx | |
305 | vindex = u30() | |
306 | vkind = 'any' | |
307 | if vindex != 0: | |
308 | vkind = read_byte() | |
309 | if vkind == 0x03: # Constant_Int | |
310 | value = self.constant_ints[vindex] | |
311 | elif vkind == 0x04: # Constant_UInt | |
312 | value = self.constant_uints[vindex] | |
313 | else: | |
314 | return {}, None # Ignore silently for now | |
315 | constants = {self.multinames[trait_name_idx]: value} | |
316 | elif kind in (0x01, 0x02, 0x03): # Method / Getter / Setter | |
54256267 PH |
317 | u30() # disp_id |
318 | method_idx = u30() | |
319 | methods[self.multinames[trait_name_idx]] = method_idx | |
320 | elif kind == 0x04: # Class | |
321 | u30() # slot_id | |
322 | u30() # classi | |
323 | elif kind == 0x05: # Function | |
324 | u30() # slot_id | |
325 | function_idx = u30() | |
326 | methods[function_idx] = self.multinames[trait_name_idx] | |
327 | else: | |
328 | raise ExtractorError('Unsupported trait kind %d' % kind) | |
329 | ||
330 | if attrs & 0x4 != 0: # Metadata present | |
331 | metadata_count = u30() | |
332 | for _c3 in range(metadata_count): | |
333 | u30() # metadata index | |
334 | ||
cd9ad1d7 | 335 | return methods, constants |
54256267 PH |
336 | |
337 | # Classes | |
338 | class_count = u30() | |
339 | classes = [] | |
340 | for class_id in range(class_count): | |
341 | name_idx = u30() | |
01b4b745 PH |
342 | |
343 | cname = self.multinames[name_idx] | |
344 | avm_class = _AVMClass(name_idx, cname) | |
345 | classes.append(avm_class) | |
346 | ||
54256267 PH |
347 | u30() # super_name idx |
348 | flags = read_byte() | |
349 | if flags & 0x08 != 0: # Protected namespace is present | |
350 | u30() # protected_ns_idx | |
351 | intrf_count = u30() | |
352 | for _c2 in range(intrf_count): | |
353 | u30() | |
354 | u30() # iinit | |
355 | trait_count = u30() | |
356 | for _c2 in range(trait_count): | |
fbf94a78 | 357 | trait_methods, trait_constants = parse_traits_info() |
01b4b745 | 358 | avm_class.register_methods(trait_methods) |
fbf94a78 PH |
359 | if trait_constants: |
360 | avm_class.constants.update(trait_constants) | |
01b4b745 | 361 | |
54256267 PH |
362 | assert len(classes) == class_count |
363 | self._classes_by_name = dict((c.name, c) for c in classes) | |
364 | ||
365 | for avm_class in classes: | |
1921b245 | 366 | avm_class.cinit_idx = u30() |
54256267 PH |
367 | trait_count = u30() |
368 | for _c2 in range(trait_count): | |
cd9ad1d7 | 369 | trait_methods, trait_constants = parse_traits_info() |
01b4b745 | 370 | avm_class.register_methods(trait_methods) |
cd9ad1d7 PH |
371 | if trait_constants: |
372 | avm_class.constants.update(trait_constants) | |
54256267 PH |
373 | |
374 | # Scripts | |
375 | script_count = u30() | |
376 | for _c in range(script_count): | |
377 | u30() # init | |
378 | trait_count = u30() | |
379 | for _c2 in range(trait_count): | |
380 | parse_traits_info() | |
381 | ||
382 | # Method bodies | |
383 | method_body_count = u30() | |
384 | Method = collections.namedtuple('Method', ['code', 'local_count']) | |
1921b245 | 385 | self._all_methods = [] |
54256267 PH |
386 | for _c in range(method_body_count): |
387 | method_idx = u30() | |
388 | u30() # max_stack | |
389 | local_count = u30() | |
390 | u30() # init_scope_depth | |
391 | u30() # max_scope_depth | |
392 | code_length = u30() | |
393 | code = read_bytes(code_length) | |
1921b245 PH |
394 | m = Method(code, local_count) |
395 | self._all_methods.append(m) | |
54256267 PH |
396 | for avm_class in classes: |
397 | if method_idx in avm_class.method_idxs: | |
54256267 PH |
398 | avm_class.methods[avm_class.method_idxs[method_idx]] = m |
399 | exception_count = u30() | |
400 | for _c2 in range(exception_count): | |
401 | u30() # from | |
402 | u30() # to | |
403 | u30() # target | |
404 | u30() # exc_type | |
405 | u30() # var_name | |
406 | trait_count = u30() | |
407 | for _c2 in range(trait_count): | |
408 | parse_traits_info() | |
409 | ||
410 | assert p + code_reader.tell() == len(code_tag) | |
411 | ||
b7558d98 PH |
412 | def patch_function(self, avm_class, func_name, f): |
413 | self._patched_functions[(avm_class, func_name)] = f | |
414 | ||
1921b245 | 415 | def extract_class(self, class_name, call_cinit=True): |
54256267 | 416 | try: |
1921b245 | 417 | res = self._classes_by_name[class_name] |
54256267 PH |
418 | except KeyError: |
419 | raise ExtractorError('Class %r not found' % class_name) | |
420 | ||
1921b245 PH |
421 | if call_cinit and hasattr(res, 'cinit_idx'): |
422 | res.register_methods({'$cinit': res.cinit_idx}) | |
423 | res.methods['$cinit'] = self._all_methods[res.cinit_idx] | |
424 | cinit = self.extract_function(res, '$cinit') | |
425 | cinit([]) | |
426 | ||
427 | return res | |
428 | ||
54256267 | 429 | def extract_function(self, avm_class, func_name): |
b7558d98 PH |
430 | p = self._patched_functions.get((avm_class, func_name)) |
431 | if p: | |
432 | return p | |
54256267 PH |
433 | if func_name in avm_class.method_pyfunctions: |
434 | return avm_class.method_pyfunctions[func_name] | |
435 | if func_name in self._classes_by_name: | |
436 | return self._classes_by_name[func_name].make_object() | |
437 | if func_name not in avm_class.methods: | |
01b4b745 PH |
438 | raise ExtractorError('Cannot find function %s.%s' % ( |
439 | avm_class.name, func_name)) | |
54256267 PH |
440 | m = avm_class.methods[func_name] |
441 | ||
442 | def resfunc(args): | |
443 | # Helper functions | |
444 | coder = io.BytesIO(m.code) | |
445 | s24 = lambda: _s24(coder) | |
446 | u30 = lambda: _u30(coder) | |
447 | ||
e75c24e8 | 448 | registers = [avm_class.variables] + list(args) + [None] * m.local_count |
54256267 | 449 | stack = [] |
01b4b745 | 450 | scopes = collections.deque([ |
fbf94a78 | 451 | self._classes_by_name, avm_class.constants, avm_class.variables]) |
54256267 PH |
452 | while True: |
453 | opcode = _read_byte(coder) | |
33a266f4 PH |
454 | if opcode == 9: # label |
455 | pass # Spec says: "Do nothing." | |
456 | elif opcode == 16: # jump | |
e983cf52 PH |
457 | offset = s24() |
458 | coder.seek(coder.tell() + offset) | |
459 | elif opcode == 17: # iftrue | |
54256267 PH |
460 | offset = s24() |
461 | value = stack.pop() | |
462 | if value: | |
463 | coder.seek(coder.tell() + offset) | |
e75c24e8 PH |
464 | elif opcode == 18: # iffalse |
465 | offset = s24() | |
466 | value = stack.pop() | |
467 | if not value: | |
468 | coder.seek(coder.tell() + offset) | |
e983cf52 PH |
469 | elif opcode == 19: # ifeq |
470 | offset = s24() | |
471 | value2 = stack.pop() | |
472 | value1 = stack.pop() | |
473 | if value2 == value1: | |
474 | coder.seek(coder.tell() + offset) | |
475 | elif opcode == 20: # ifne | |
476 | offset = s24() | |
477 | value2 = stack.pop() | |
478 | value1 = stack.pop() | |
479 | if value2 != value1: | |
480 | coder.seek(coder.tell() + offset) | |
33a266f4 PH |
481 | elif opcode == 21: # iflt |
482 | offset = s24() | |
483 | value2 = stack.pop() | |
484 | value1 = stack.pop() | |
485 | if value1 < value2: | |
486 | coder.seek(coder.tell() + offset) | |
e983cf52 PH |
487 | elif opcode == 32: # pushnull |
488 | stack.append(None) | |
4686ae4b PH |
489 | elif opcode == 33: # pushundefined |
490 | stack.append(undefined) | |
54256267 PH |
491 | elif opcode == 36: # pushbyte |
492 | v = _read_byte(coder) | |
493 | stack.append(v) | |
162f54ec PH |
494 | elif opcode == 37: # pushshort |
495 | v = u30() | |
496 | stack.append(v) | |
a4bb8395 PH |
497 | elif opcode == 38: # pushtrue |
498 | stack.append(True) | |
499 | elif opcode == 39: # pushfalse | |
500 | stack.append(False) | |
4686ae4b PH |
501 | elif opcode == 40: # pushnan |
502 | stack.append(float('NaN')) | |
0cb20563 PH |
503 | elif opcode == 42: # dup |
504 | value = stack[-1] | |
505 | stack.append(value) | |
54256267 PH |
506 | elif opcode == 44: # pushstring |
507 | idx = u30() | |
70f767dc | 508 | stack.append(self.constant_strings[idx]) |
54256267 | 509 | elif opcode == 48: # pushscope |
54256267 | 510 | new_scope = stack.pop() |
e75c24e8 | 511 | scopes.append(new_scope) |
decf2ae4 PH |
512 | elif opcode == 66: # construct |
513 | arg_count = u30() | |
514 | args = list(reversed( | |
515 | [stack.pop() for _ in range(arg_count)])) | |
516 | obj = stack.pop() | |
517 | res = obj.avm_class.make_object() | |
518 | stack.append(res) | |
54256267 PH |
519 | elif opcode == 70: # callproperty |
520 | index = u30() | |
521 | mname = self.multinames[index] | |
522 | arg_count = u30() | |
523 | args = list(reversed( | |
524 | [stack.pop() for _ in range(arg_count)])) | |
525 | obj = stack.pop() | |
01b4b745 | 526 | |
6b592d93 PH |
527 | if obj == StringClass: |
528 | if mname == 'String': | |
529 | assert len(args) == 1 | |
530 | assert isinstance(args[0], ( | |
531 | int, compat_str, _Undefined)) | |
532 | if args[0] == undefined: | |
533 | res = 'undefined' | |
534 | else: | |
535 | res = compat_str(args[0]) | |
536 | stack.append(res) | |
537 | continue | |
538 | else: | |
539 | raise NotImplementedError( | |
540 | 'Function String.%s is not yet implemented' | |
541 | % mname) | |
542 | elif isinstance(obj, _AVMClass_Object): | |
01b4b745 PH |
543 | func = self.extract_function(obj.avm_class, mname) |
544 | res = func(args) | |
54256267 | 545 | stack.append(res) |
01b4b745 | 546 | continue |
6b592d93 PH |
547 | elif isinstance(obj, _AVMClass): |
548 | func = self.extract_function(obj, mname) | |
549 | res = func(args) | |
550 | stack.append(res) | |
551 | continue | |
0d989011 PH |
552 | elif isinstance(obj, _ScopeDict): |
553 | if mname in obj.avm_class.method_names: | |
554 | func = self.extract_function(obj.avm_class, mname) | |
555 | res = func(args) | |
556 | else: | |
557 | res = obj[mname] | |
558 | stack.append(res) | |
559 | continue | |
01b4b745 PH |
560 | elif isinstance(obj, compat_str): |
561 | if mname == 'split': | |
562 | assert len(args) == 1 | |
563 | assert isinstance(args[0], compat_str) | |
564 | if args[0] == '': | |
565 | res = list(obj) | |
566 | else: | |
567 | res = obj.split(args[0]) | |
568 | stack.append(res) | |
569 | continue | |
33a266f4 PH |
570 | elif mname == 'charCodeAt': |
571 | assert len(args) <= 1 | |
572 | idx = 0 if len(args) == 0 else args[0] | |
573 | assert isinstance(idx, int) | |
574 | res = ord(obj[idx]) | |
575 | stack.append(res) | |
576 | continue | |
01b4b745 PH |
577 | elif isinstance(obj, list): |
578 | if mname == 'slice': | |
579 | assert len(args) == 1 | |
580 | assert isinstance(args[0], int) | |
581 | res = obj[args[0]:] | |
582 | stack.append(res) | |
583 | continue | |
584 | elif mname == 'join': | |
585 | assert len(args) == 1 | |
586 | assert isinstance(args[0], compat_str) | |
587 | res = args[0].join(obj) | |
588 | stack.append(res) | |
589 | continue | |
590 | raise NotImplementedError( | |
591 | 'Unsupported property %r on %r' | |
592 | % (mname, obj)) | |
8d05f2c1 | 593 | elif opcode == 71: # returnvoid |
4686ae4b | 594 | res = undefined |
8d05f2c1 | 595 | return res |
54256267 PH |
596 | elif opcode == 72: # returnvalue |
597 | res = stack.pop() | |
598 | return res | |
fbf94a78 PH |
599 | elif opcode == 73: # constructsuper |
600 | # Not yet implemented, just hope it works without it | |
601 | arg_count = u30() | |
602 | args = list(reversed( | |
603 | [stack.pop() for _ in range(arg_count)])) | |
604 | obj = stack.pop() | |
54256267 PH |
605 | elif opcode == 74: # constructproperty |
606 | index = u30() | |
607 | arg_count = u30() | |
608 | args = list(reversed( | |
609 | [stack.pop() for _ in range(arg_count)])) | |
610 | obj = stack.pop() | |
611 | ||
612 | mname = self.multinames[index] | |
01b4b745 | 613 | assert isinstance(obj, _AVMClass) |
7fbf54dc | 614 | |
54256267 PH |
615 | # We do not actually call the constructor for now; |
616 | # we just pretend it does nothing | |
01b4b745 | 617 | stack.append(obj.make_object()) |
54256267 PH |
618 | elif opcode == 79: # callpropvoid |
619 | index = u30() | |
620 | mname = self.multinames[index] | |
621 | arg_count = u30() | |
622 | args = list(reversed( | |
623 | [stack.pop() for _ in range(arg_count)])) | |
624 | obj = stack.pop() | |
8d05f2c1 PH |
625 | if isinstance(obj, _AVMClass_Object): |
626 | func = self.extract_function(obj.avm_class, mname) | |
627 | res = func(args) | |
4686ae4b | 628 | assert res is undefined |
8d05f2c1 PH |
629 | continue |
630 | if isinstance(obj, _ScopeDict): | |
631 | assert mname in obj.avm_class.method_names | |
632 | func = self.extract_function(obj.avm_class, mname) | |
633 | res = func(args) | |
4686ae4b | 634 | assert res is undefined |
8d05f2c1 | 635 | continue |
54256267 PH |
636 | if mname == 'reverse': |
637 | assert isinstance(obj, list) | |
638 | obj.reverse() | |
639 | else: | |
640 | raise NotImplementedError( | |
641 | 'Unsupported (void) property %r on %r' | |
642 | % (mname, obj)) | |
643 | elif opcode == 86: # newarray | |
644 | arg_count = u30() | |
645 | arr = [] | |
646 | for i in range(arg_count): | |
647 | arr.append(stack.pop()) | |
648 | arr = arr[::-1] | |
649 | stack.append(arr) | |
70f767dc PH |
650 | elif opcode == 93: # findpropstrict |
651 | index = u30() | |
652 | mname = self.multinames[index] | |
653 | for s in reversed(scopes): | |
654 | if mname in s: | |
655 | res = s | |
656 | break | |
657 | else: | |
658 | res = scopes[0] | |
6b592d93 PH |
659 | if mname not in res and mname in _builtin_classes: |
660 | stack.append(_builtin_classes[mname]) | |
3cbcff8a PH |
661 | else: |
662 | stack.append(res[mname]) | |
54256267 PH |
663 | elif opcode == 94: # findproperty |
664 | index = u30() | |
665 | mname = self.multinames[index] | |
e75c24e8 PH |
666 | for s in reversed(scopes): |
667 | if mname in s: | |
668 | res = s | |
669 | break | |
670 | else: | |
01b4b745 | 671 | res = avm_class.variables |
54256267 PH |
672 | stack.append(res) |
673 | elif opcode == 96: # getlex | |
674 | index = u30() | |
675 | mname = self.multinames[index] | |
e75c24e8 PH |
676 | for s in reversed(scopes): |
677 | if mname in s: | |
678 | scope = s | |
679 | break | |
680 | else: | |
01b4b745 | 681 | scope = avm_class.variables |
cd9ad1d7 PH |
682 | |
683 | if mname in scope: | |
684 | res = scope[mname] | |
fbf94a78 PH |
685 | elif mname in _builtin_classes: |
686 | res = _builtin_classes[mname] | |
cd9ad1d7 | 687 | else: |
fbf94a78 PH |
688 | # Assume unitialized |
689 | res = undefined | |
54256267 PH |
690 | stack.append(res) |
691 | elif opcode == 97: # setproperty | |
692 | index = u30() | |
693 | value = stack.pop() | |
694 | idx = self.multinames[index] | |
decf2ae4 PH |
695 | if isinstance(idx, _Multiname): |
696 | idx = stack.pop() | |
54256267 PH |
697 | obj = stack.pop() |
698 | obj[idx] = value | |
699 | elif opcode == 98: # getlocal | |
700 | index = u30() | |
701 | stack.append(registers[index]) | |
702 | elif opcode == 99: # setlocal | |
703 | index = u30() | |
704 | value = stack.pop() | |
705 | registers[index] = value | |
706 | elif opcode == 102: # getproperty | |
707 | index = u30() | |
708 | pname = self.multinames[index] | |
709 | if pname == 'length': | |
710 | obj = stack.pop() | |
3cbcff8a | 711 | assert isinstance(obj, (compat_str, list)) |
54256267 | 712 | stack.append(len(obj)) |
4baafa22 PH |
713 | elif isinstance(pname, compat_str): # Member access |
714 | obj = stack.pop() | |
fbf94a78 PH |
715 | if isinstance(obj, _AVMClass): |
716 | res = obj.static_properties[pname] | |
717 | stack.append(res) | |
718 | continue | |
719 | ||
720 | assert isinstance(obj, (dict, _ScopeDict)),\ | |
0ab1ca55 | 721 | 'Accessing member %r on %r' % (pname, obj) |
4686ae4b | 722 | res = obj.get(pname, undefined) |
8d05f2c1 | 723 | stack.append(res) |
54256267 PH |
724 | else: # Assume attribute access |
725 | idx = stack.pop() | |
726 | assert isinstance(idx, int) | |
727 | obj = stack.pop() | |
728 | assert isinstance(obj, list) | |
729 | stack.append(obj[idx]) | |
1921b245 PH |
730 | elif opcode == 104: # initproperty |
731 | index = u30() | |
732 | value = stack.pop() | |
733 | idx = self.multinames[index] | |
734 | if isinstance(idx, _Multiname): | |
735 | idx = stack.pop() | |
736 | obj = stack.pop() | |
737 | obj[idx] = value | |
0cb20563 PH |
738 | elif opcode == 115: # convert_ |
739 | value = stack.pop() | |
740 | intvalue = int(value) | |
741 | stack.append(intvalue) | |
54256267 PH |
742 | elif opcode == 128: # coerce |
743 | u30() | |
4686ae4b PH |
744 | elif opcode == 130: # coerce_a |
745 | value = stack.pop() | |
746 | # um, yes, it's any value | |
747 | stack.append(value) | |
54256267 PH |
748 | elif opcode == 133: # coerce_s |
749 | assert isinstance(stack[-1], (type(None), compat_str)) | |
4686ae4b PH |
750 | elif opcode == 147: # decrement |
751 | value = stack.pop() | |
752 | assert isinstance(value, int) | |
753 | stack.append(value - 1) | |
754 | elif opcode == 149: # typeof | |
755 | value = stack.pop() | |
756 | return { | |
757 | _Undefined: 'undefined', | |
758 | compat_str: 'String', | |
759 | int: 'Number', | |
760 | float: 'Number', | |
761 | }[type(value)] | |
0cb20563 PH |
762 | elif opcode == 160: # add |
763 | value2 = stack.pop() | |
764 | value1 = stack.pop() | |
765 | res = value1 + value2 | |
766 | stack.append(res) | |
767 | elif opcode == 161: # subtract | |
768 | value2 = stack.pop() | |
769 | value1 = stack.pop() | |
770 | res = value1 - value2 | |
771 | stack.append(res) | |
33a266f4 PH |
772 | elif opcode == 162: # multiply |
773 | value2 = stack.pop() | |
774 | value1 = stack.pop() | |
775 | res = value1 * value2 | |
776 | stack.append(res) | |
54256267 PH |
777 | elif opcode == 164: # modulo |
778 | value2 = stack.pop() | |
779 | value1 = stack.pop() | |
780 | res = value1 % value2 | |
781 | stack.append(res) | |
162f54ec PH |
782 | elif opcode == 168: # bitand |
783 | value2 = stack.pop() | |
784 | value1 = stack.pop() | |
785 | assert isinstance(value1, int) | |
786 | assert isinstance(value2, int) | |
787 | res = value1 & value2 | |
788 | stack.append(res) | |
eb537604 PH |
789 | elif opcode == 171: # equals |
790 | value2 = stack.pop() | |
791 | value1 = stack.pop() | |
792 | result = value1 == value2 | |
793 | stack.append(result) | |
54256267 PH |
794 | elif opcode == 175: # greaterequals |
795 | value2 = stack.pop() | |
796 | value1 = stack.pop() | |
797 | result = value1 >= value2 | |
798 | stack.append(result) | |
33a266f4 PH |
799 | elif opcode == 192: # increment_i |
800 | value = stack.pop() | |
801 | assert isinstance(value, int) | |
802 | stack.append(value + 1) | |
54256267 PH |
803 | elif opcode == 208: # getlocal_0 |
804 | stack.append(registers[0]) | |
805 | elif opcode == 209: # getlocal_1 | |
806 | stack.append(registers[1]) | |
807 | elif opcode == 210: # getlocal_2 | |
808 | stack.append(registers[2]) | |
809 | elif opcode == 211: # getlocal_3 | |
810 | stack.append(registers[3]) | |
70f767dc PH |
811 | elif opcode == 212: # setlocal_0 |
812 | registers[0] = stack.pop() | |
813 | elif opcode == 213: # setlocal_1 | |
814 | registers[1] = stack.pop() | |
54256267 PH |
815 | elif opcode == 214: # setlocal_2 |
816 | registers[2] = stack.pop() | |
817 | elif opcode == 215: # setlocal_3 | |
818 | registers[3] = stack.pop() | |
819 | else: | |
820 | raise NotImplementedError( | |
821 | 'Unsupported opcode %d' % opcode) | |
822 | ||
823 | avm_class.method_pyfunctions[func_name] = resfunc | |
824 | return resfunc | |
825 |