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