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