1 from __future__ import unicode_literals
2
3 import collections
4 import io
5 import zlib
6
7 from .compat import (
8 compat_str,
9 compat_struct_unpack,
10 )
11 from .utils import (
12 ExtractorError,
13 )
14
15
16 def _extract_tags(file_contents):
17 if file_contents[1:3] != b'WS':
18 raise ExtractorError(
19 'Not an SWF file; header is %r' % file_contents[:3])
20 if file_contents[:1] == b'C':
21 content = zlib.decompress(file_contents[8:])
22 else:
23 raise NotImplementedError(
24 'Unsupported compression format %r' %
25 file_contents[:1])
26
27 # Determine number of bits in framesize rectangle
28 framesize_nbits = compat_struct_unpack('!B', content[:1])[0] >> 3
29 framesize_len = (5 + 4 * framesize_nbits + 7) // 8
30
31 pos = framesize_len + 2 + 2
32 while pos < len(content):
33 header16 = compat_struct_unpack('<H', content[pos:pos + 2])[0]
34 pos += 2
35 tag_code = header16 >> 6
36 tag_len = header16 & 0x3f
37 if tag_len == 0x3f:
38 tag_len = compat_struct_unpack('<I', content[pos:pos + 4])[0]
39 pos += 4
40 assert pos + tag_len <= len(content), \
41 ('Tag %d ends at %d+%d - that\'s longer than the file (%d)'
42 % (tag_code, pos, tag_len, len(content)))
43 yield (tag_code, content[pos:pos + tag_len])
44 pos += tag_len
45
46
47 class _AVMClass_Object(object):
48 def __init__(self, avm_class):
49 self.avm_class = avm_class
50
51 def __repr__(self):
52 return '%s#%x' % (self.avm_class.name, id(self))
53
54
55 class _ScopeDict(dict):
56 def __init__(self, avm_class):
57 super(_ScopeDict, self).__init__()
58 self.avm_class = avm_class
59
60 def __repr__(self):
61 return '%s__Scope(%s)' % (
62 self.avm_class.name,
63 super(_ScopeDict, self).__repr__())
64
65
66 class _AVMClass(object):
67 def __init__(self, name_idx, name, static_properties=None):
68 self.name_idx = name_idx
69 self.name = name
70 self.method_names = {}
71 self.method_idxs = {}
72 self.methods = {}
73 self.method_pyfunctions = {}
74 self.static_properties = static_properties if static_properties else {}
75
76 self.variables = _ScopeDict(self)
77 self.constants = {}
78
79 def make_object(self):
80 return _AVMClass_Object(self)
81
82 def __repr__(self):
83 return '_AVMClass(%s)' % (self.name)
84
85 def register_methods(self, methods):
86 self.method_names.update(methods.items())
87 self.method_idxs.update(dict(
88 (idx, name)
89 for name, idx in methods.items()))
90
91
92 class _Multiname(object):
93 def __init__(self, kind):
94 self.kind = kind
95
96 def __repr__(self):
97 return '[MULTINAME kind: 0x%x]' % self.kind
98
99
100 def _read_int(reader):
101 res = 0
102 shift = 0
103 for _ in range(5):
104 buf = reader.read(1)
105 assert len(buf) == 1
106 b = compat_struct_unpack('<B', buf)[0]
107 res = res | ((b & 0x7f) << shift)
108 if b & 0x80 == 0:
109 break
110 shift += 7
111 return res
112
113
114 def _u30(reader):
115 res = _read_int(reader)
116 assert res & 0xf0000000 == 0
117 return res
118
119
120 _u32 = _read_int
121
122
123 def _s32(reader):
124 v = _read_int(reader)
125 if v & 0x80000000 != 0:
126 v = - ((v ^ 0xffffffff) + 1)
127 return v
128
129
130 def _s24(reader):
131 bs = reader.read(3)
132 assert len(bs) == 3
133 last_byte = b'\xff' if (ord(bs[2:3]) >= 0x80) else b'\x00'
134 return compat_struct_unpack('<i', bs + last_byte)[0]
135
136
137 def _read_string(reader):
138 slen = _u30(reader)
139 resb = reader.read(slen)
140 assert len(resb) == slen
141 return resb.decode('utf-8')
142
143
144 def _read_bytes(count, reader):
145 assert count >= 0
146 resb = reader.read(count)
147 assert len(resb) == count
148 return resb
149
150
151 def _read_byte(reader):
152 resb = _read_bytes(1, reader=reader)
153 res = compat_struct_unpack('<B', resb)[0]
154 return res
155
156
157 StringClass = _AVMClass('(no name idx)', 'String')
158 ByteArrayClass = _AVMClass('(no name idx)', 'ByteArray')
159 TimerClass = _AVMClass('(no name idx)', 'Timer')
160 TimerEventClass = _AVMClass('(no name idx)', 'TimerEvent', {'TIMER': 'timer'})
161 _builtin_classes = {
162 StringClass.name: StringClass,
163 ByteArrayClass.name: ByteArrayClass,
164 TimerClass.name: TimerClass,
165 TimerEventClass.name: TimerEventClass,
166 }
167
168
169 class _Undefined(object):
170 def __bool__(self):
171 return False
172 __nonzero__ = __bool__
173
174 def __hash__(self):
175 return 0
176
177 def __str__(self):
178 return 'undefined'
179 __repr__ = __str__
180
181
182 undefined = _Undefined()
183
184
185 class SWFInterpreter(object):
186 def __init__(self, file_contents):
187 self._patched_functions = {
188 (TimerClass, 'addEventListener'): lambda params: undefined,
189 }
190 code_tag = next(tag
191 for tag_code, tag in _extract_tags(file_contents)
192 if tag_code == 82)
193 p = code_tag.index(b'\0', 4) + 1
194 code_reader = io.BytesIO(code_tag[p:])
195
196 # Parse ABC (AVM2 ByteCode)
197
198 # Define a couple convenience methods
199 u30 = lambda *args: _u30(*args, reader=code_reader)
200 s32 = lambda *args: _s32(*args, reader=code_reader)
201 u32 = lambda *args: _u32(*args, reader=code_reader)
202 read_bytes = lambda *args: _read_bytes(*args, reader=code_reader)
203 read_byte = lambda *args: _read_byte(*args, reader=code_reader)
204
205 # minor_version + major_version
206 read_bytes(2 + 2)
207
208 # Constant pool
209 int_count = u30()
210 self.constant_ints = [0]
211 for _c in range(1, int_count):
212 self.constant_ints.append(s32())
213 self.constant_uints = [0]
214 uint_count = u30()
215 for _c in range(1, uint_count):
216 self.constant_uints.append(u32())
217 double_count = u30()
218 read_bytes(max(0, (double_count - 1)) * 8)
219 string_count = u30()
220 self.constant_strings = ['']
221 for _c in range(1, string_count):
222 s = _read_string(code_reader)
223 self.constant_strings.append(s)
224 namespace_count = u30()
225 for _c in range(1, namespace_count):
226 read_bytes(1) # kind
227 u30() # name
228 ns_set_count = u30()
229 for _c in range(1, ns_set_count):
230 count = u30()
231 for _c2 in range(count):
232 u30()
233 multiname_count = u30()
234 MULTINAME_SIZES = {
235 0x07: 2, # QName
236 0x0d: 2, # QNameA
237 0x0f: 1, # RTQName
238 0x10: 1, # RTQNameA
239 0x11: 0, # RTQNameL
240 0x12: 0, # RTQNameLA
241 0x09: 2, # Multiname
242 0x0e: 2, # MultinameA
243 0x1b: 1, # MultinameL
244 0x1c: 1, # MultinameLA
245 }
246 self.multinames = ['']
247 for _c in range(1, multiname_count):
248 kind = u30()
249 assert kind in MULTINAME_SIZES, 'Invalid multiname kind %r' % kind
250 if kind == 0x07:
251 u30() # namespace_idx
252 name_idx = u30()
253 self.multinames.append(self.constant_strings[name_idx])
254 elif kind == 0x09:
255 name_idx = u30()
256 u30()
257 self.multinames.append(self.constant_strings[name_idx])
258 else:
259 self.multinames.append(_Multiname(kind))
260 for _c2 in range(MULTINAME_SIZES[kind]):
261 u30()
262
263 # Methods
264 method_count = u30()
265 MethodInfo = collections.namedtuple(
266 'MethodInfo',
267 ['NEED_ARGUMENTS', 'NEED_REST'])
268 method_infos = []
269 for method_id in range(method_count):
270 param_count = u30()
271 u30() # return type
272 for _ in range(param_count):
273 u30() # param type
274 u30() # name index (always 0 for youtube)
275 flags = read_byte()
276 if flags & 0x08 != 0:
277 # Options present
278 option_count = u30()
279 for c in range(option_count):
280 u30() # val
281 read_bytes(1) # kind
282 if flags & 0x80 != 0:
283 # Param names present
284 for _ in range(param_count):
285 u30() # param name
286 mi = MethodInfo(flags & 0x01 != 0, flags & 0x04 != 0)
287 method_infos.append(mi)
288
289 # Metadata
290 metadata_count = u30()
291 for _c in range(metadata_count):
292 u30() # name
293 item_count = u30()
294 for _c2 in range(item_count):
295 u30() # key
296 u30() # value
297
298 def parse_traits_info():
299 trait_name_idx = u30()
300 kind_full = read_byte()
301 kind = kind_full & 0x0f
302 attrs = kind_full >> 4
303 methods = {}
304 constants = None
305 if kind == 0x00: # Slot
306 u30() # Slot id
307 u30() # type_name_idx
308 vindex = u30()
309 if vindex != 0:
310 read_byte() # vkind
311 elif kind == 0x06: # Const
312 u30() # Slot id
313 u30() # type_name_idx
314 vindex = u30()
315 vkind = 'any'
316 if vindex != 0:
317 vkind = read_byte()
318 if vkind == 0x03: # Constant_Int
319 value = self.constant_ints[vindex]
320 elif vkind == 0x04: # Constant_UInt
321 value = self.constant_uints[vindex]
322 else:
323 return {}, None # Ignore silently for now
324 constants = {self.multinames[trait_name_idx]: value}
325 elif kind in (0x01, 0x02, 0x03): # Method / Getter / Setter
326 u30() # disp_id
327 method_idx = u30()
328 methods[self.multinames[trait_name_idx]] = method_idx
329 elif kind == 0x04: # Class
330 u30() # slot_id
331 u30() # classi
332 elif kind == 0x05: # Function
333 u30() # slot_id
334 function_idx = u30()
335 methods[function_idx] = self.multinames[trait_name_idx]
336 else:
337 raise ExtractorError('Unsupported trait kind %d' % kind)
338
339 if attrs & 0x4 != 0: # Metadata present
340 metadata_count = u30()
341 for _c3 in range(metadata_count):
342 u30() # metadata index
343
344 return methods, constants
345
346 # Classes
347 class_count = u30()
348 classes = []
349 for class_id in range(class_count):
350 name_idx = u30()
351
352 cname = self.multinames[name_idx]
353 avm_class = _AVMClass(name_idx, cname)
354 classes.append(avm_class)
355
356 u30() # super_name idx
357 flags = read_byte()
358 if flags & 0x08 != 0: # Protected namespace is present
359 u30() # protected_ns_idx
360 intrf_count = u30()
361 for _c2 in range(intrf_count):
362 u30()
363 u30() # iinit
364 trait_count = u30()
365 for _c2 in range(trait_count):
366 trait_methods, trait_constants = parse_traits_info()
367 avm_class.register_methods(trait_methods)
368 if trait_constants:
369 avm_class.constants.update(trait_constants)
370
371 assert len(classes) == class_count
372 self._classes_by_name = dict((c.name, c) for c in classes)
373
374 for avm_class in classes:
375 avm_class.cinit_idx = u30()
376 trait_count = u30()
377 for _c2 in range(trait_count):
378 trait_methods, trait_constants = parse_traits_info()
379 avm_class.register_methods(trait_methods)
380 if trait_constants:
381 avm_class.constants.update(trait_constants)
382
383 # Scripts
384 script_count = u30()
385 for _c in range(script_count):
386 u30() # init
387 trait_count = u30()
388 for _c2 in range(trait_count):
389 parse_traits_info()
390
391 # Method bodies
392 method_body_count = u30()
393 Method = collections.namedtuple('Method', ['code', 'local_count'])
394 self._all_methods = []
395 for _c in range(method_body_count):
396 method_idx = u30()
397 u30() # max_stack
398 local_count = u30()
399 u30() # init_scope_depth
400 u30() # max_scope_depth
401 code_length = u30()
402 code = read_bytes(code_length)
403 m = Method(code, local_count)
404 self._all_methods.append(m)
405 for avm_class in classes:
406 if method_idx in avm_class.method_idxs:
407 avm_class.methods[avm_class.method_idxs[method_idx]] = m
408 exception_count = u30()
409 for _c2 in range(exception_count):
410 u30() # from
411 u30() # to
412 u30() # target
413 u30() # exc_type
414 u30() # var_name
415 trait_count = u30()
416 for _c2 in range(trait_count):
417 parse_traits_info()
418
419 assert p + code_reader.tell() == len(code_tag)
420
421 def patch_function(self, avm_class, func_name, f):
422 self._patched_functions[(avm_class, func_name)] = f
423
424 def extract_class(self, class_name, call_cinit=True):
425 try:
426 res = self._classes_by_name[class_name]
427 except KeyError:
428 raise ExtractorError('Class %r not found' % class_name)
429
430 if call_cinit and hasattr(res, 'cinit_idx'):
431 res.register_methods({'$cinit': res.cinit_idx})
432 res.methods['$cinit'] = self._all_methods[res.cinit_idx]
433 cinit = self.extract_function(res, '$cinit')
434 cinit([])
435
436 return res
437
438 def extract_function(self, avm_class, func_name):
439 p = self._patched_functions.get((avm_class, func_name))
440 if p:
441 return p
442 if func_name in avm_class.method_pyfunctions:
443 return avm_class.method_pyfunctions[func_name]
444 if func_name in self._classes_by_name:
445 return self._classes_by_name[func_name].make_object()
446 if func_name not in avm_class.methods:
447 raise ExtractorError('Cannot find function %s.%s' % (
448 avm_class.name, func_name))
449 m = avm_class.methods[func_name]
450
451 def resfunc(args):
452 # Helper functions
453 coder = io.BytesIO(m.code)
454 s24 = lambda: _s24(coder)
455 u30 = lambda: _u30(coder)
456
457 registers = [avm_class.variables] + list(args) + [None] * m.local_count
458 stack = []
459 scopes = collections.deque([
460 self._classes_by_name, avm_class.constants, avm_class.variables])
461 while True:
462 opcode = _read_byte(coder)
463 if opcode == 9: # label
464 pass # Spec says: "Do nothing."
465 elif opcode == 16: # jump
466 offset = s24()
467 coder.seek(coder.tell() + offset)
468 elif opcode == 17: # iftrue
469 offset = s24()
470 value = stack.pop()
471 if value:
472 coder.seek(coder.tell() + offset)
473 elif opcode == 18: # iffalse
474 offset = s24()
475 value = stack.pop()
476 if not value:
477 coder.seek(coder.tell() + offset)
478 elif opcode == 19: # ifeq
479 offset = s24()
480 value2 = stack.pop()
481 value1 = stack.pop()
482 if value2 == value1:
483 coder.seek(coder.tell() + offset)
484 elif opcode == 20: # ifne
485 offset = s24()
486 value2 = stack.pop()
487 value1 = stack.pop()
488 if value2 != value1:
489 coder.seek(coder.tell() + offset)
490 elif opcode == 21: # iflt
491 offset = s24()
492 value2 = stack.pop()
493 value1 = stack.pop()
494 if value1 < value2:
495 coder.seek(coder.tell() + offset)
496 elif opcode == 32: # pushnull
497 stack.append(None)
498 elif opcode == 33: # pushundefined
499 stack.append(undefined)
500 elif opcode == 36: # pushbyte
501 v = _read_byte(coder)
502 stack.append(v)
503 elif opcode == 37: # pushshort
504 v = u30()
505 stack.append(v)
506 elif opcode == 38: # pushtrue
507 stack.append(True)
508 elif opcode == 39: # pushfalse
509 stack.append(False)
510 elif opcode == 40: # pushnan
511 stack.append(float('NaN'))
512 elif opcode == 42: # dup
513 value = stack[-1]
514 stack.append(value)
515 elif opcode == 44: # pushstring
516 idx = u30()
517 stack.append(self.constant_strings[idx])
518 elif opcode == 48: # pushscope
519 new_scope = stack.pop()
520 scopes.append(new_scope)
521 elif opcode == 66: # construct
522 arg_count = u30()
523 args = list(reversed(
524 [stack.pop() for _ in range(arg_count)]))
525 obj = stack.pop()
526 res = obj.avm_class.make_object()
527 stack.append(res)
528 elif opcode == 70: # callproperty
529 index = u30()
530 mname = self.multinames[index]
531 arg_count = u30()
532 args = list(reversed(
533 [stack.pop() for _ in range(arg_count)]))
534 obj = stack.pop()
535
536 if obj == StringClass:
537 if mname == 'String':
538 assert len(args) == 1
539 assert isinstance(args[0], (
540 int, compat_str, _Undefined))
541 if args[0] == undefined:
542 res = 'undefined'
543 else:
544 res = compat_str(args[0])
545 stack.append(res)
546 continue
547 else:
548 raise NotImplementedError(
549 'Function String.%s is not yet implemented'
550 % mname)
551 elif isinstance(obj, _AVMClass_Object):
552 func = self.extract_function(obj.avm_class, mname)
553 res = func(args)
554 stack.append(res)
555 continue
556 elif isinstance(obj, _AVMClass):
557 func = self.extract_function(obj, mname)
558 res = func(args)
559 stack.append(res)
560 continue
561 elif isinstance(obj, _ScopeDict):
562 if mname in obj.avm_class.method_names:
563 func = self.extract_function(obj.avm_class, mname)
564 res = func(args)
565 else:
566 res = obj[mname]
567 stack.append(res)
568 continue
569 elif isinstance(obj, compat_str):
570 if mname == 'split':
571 assert len(args) == 1
572 assert isinstance(args[0], compat_str)
573 if args[0] == '':
574 res = list(obj)
575 else:
576 res = obj.split(args[0])
577 stack.append(res)
578 continue
579 elif mname == 'charCodeAt':
580 assert len(args) <= 1
581 idx = 0 if len(args) == 0 else args[0]
582 assert isinstance(idx, int)
583 res = ord(obj[idx])
584 stack.append(res)
585 continue
586 elif isinstance(obj, list):
587 if mname == 'slice':
588 assert len(args) == 1
589 assert isinstance(args[0], int)
590 res = obj[args[0]:]
591 stack.append(res)
592 continue
593 elif mname == 'join':
594 assert len(args) == 1
595 assert isinstance(args[0], compat_str)
596 res = args[0].join(obj)
597 stack.append(res)
598 continue
599 raise NotImplementedError(
600 'Unsupported property %r on %r'
601 % (mname, obj))
602 elif opcode == 71: # returnvoid
603 res = undefined
604 return res
605 elif opcode == 72: # returnvalue
606 res = stack.pop()
607 return res
608 elif opcode == 73: # constructsuper
609 # Not yet implemented, just hope it works without it
610 arg_count = u30()
611 args = list(reversed(
612 [stack.pop() for _ in range(arg_count)]))
613 obj = stack.pop()
614 elif opcode == 74: # constructproperty
615 index = u30()
616 arg_count = u30()
617 args = list(reversed(
618 [stack.pop() for _ in range(arg_count)]))
619 obj = stack.pop()
620
621 mname = self.multinames[index]
622 assert isinstance(obj, _AVMClass)
623
624 # We do not actually call the constructor for now;
625 # we just pretend it does nothing
626 stack.append(obj.make_object())
627 elif opcode == 79: # callpropvoid
628 index = u30()
629 mname = self.multinames[index]
630 arg_count = u30()
631 args = list(reversed(
632 [stack.pop() for _ in range(arg_count)]))
633 obj = stack.pop()
634 if isinstance(obj, _AVMClass_Object):
635 func = self.extract_function(obj.avm_class, mname)
636 res = func(args)
637 assert res is undefined
638 continue
639 if isinstance(obj, _ScopeDict):
640 assert mname in obj.avm_class.method_names
641 func = self.extract_function(obj.avm_class, mname)
642 res = func(args)
643 assert res is undefined
644 continue
645 if mname == 'reverse':
646 assert isinstance(obj, list)
647 obj.reverse()
648 else:
649 raise NotImplementedError(
650 'Unsupported (void) property %r on %r'
651 % (mname, obj))
652 elif opcode == 86: # newarray
653 arg_count = u30()
654 arr = []
655 for i in range(arg_count):
656 arr.append(stack.pop())
657 arr = arr[::-1]
658 stack.append(arr)
659 elif opcode == 93: # findpropstrict
660 index = u30()
661 mname = self.multinames[index]
662 for s in reversed(scopes):
663 if mname in s:
664 res = s
665 break
666 else:
667 res = scopes[0]
668 if mname not in res and mname in _builtin_classes:
669 stack.append(_builtin_classes[mname])
670 else:
671 stack.append(res[mname])
672 elif opcode == 94: # findproperty
673 index = u30()
674 mname = self.multinames[index]
675 for s in reversed(scopes):
676 if mname in s:
677 res = s
678 break
679 else:
680 res = avm_class.variables
681 stack.append(res)
682 elif opcode == 96: # getlex
683 index = u30()
684 mname = self.multinames[index]
685 for s in reversed(scopes):
686 if mname in s:
687 scope = s
688 break
689 else:
690 scope = avm_class.variables
691
692 if mname in scope:
693 res = scope[mname]
694 elif mname in _builtin_classes:
695 res = _builtin_classes[mname]
696 else:
697 # Assume uninitialized
698 # TODO warn here
699 res = undefined
700 stack.append(res)
701 elif opcode == 97: # setproperty
702 index = u30()
703 value = stack.pop()
704 idx = self.multinames[index]
705 if isinstance(idx, _Multiname):
706 idx = stack.pop()
707 obj = stack.pop()
708 obj[idx] = value
709 elif opcode == 98: # getlocal
710 index = u30()
711 stack.append(registers[index])
712 elif opcode == 99: # setlocal
713 index = u30()
714 value = stack.pop()
715 registers[index] = value
716 elif opcode == 102: # getproperty
717 index = u30()
718 pname = self.multinames[index]
719 if pname == 'length':
720 obj = stack.pop()
721 assert isinstance(obj, (compat_str, list))
722 stack.append(len(obj))
723 elif isinstance(pname, compat_str): # Member access
724 obj = stack.pop()
725 if isinstance(obj, _AVMClass):
726 res = obj.static_properties[pname]
727 stack.append(res)
728 continue
729
730 assert isinstance(obj, (dict, _ScopeDict)),\
731 'Accessing member %r on %r' % (pname, obj)
732 res = obj.get(pname, undefined)
733 stack.append(res)
734 else: # Assume attribute access
735 idx = stack.pop()
736 assert isinstance(idx, int)
737 obj = stack.pop()
738 assert isinstance(obj, list)
739 stack.append(obj[idx])
740 elif opcode == 104: # initproperty
741 index = u30()
742 value = stack.pop()
743 idx = self.multinames[index]
744 if isinstance(idx, _Multiname):
745 idx = stack.pop()
746 obj = stack.pop()
747 obj[idx] = value
748 elif opcode == 115: # convert_
749 value = stack.pop()
750 intvalue = int(value)
751 stack.append(intvalue)
752 elif opcode == 128: # coerce
753 u30()
754 elif opcode == 130: # coerce_a
755 value = stack.pop()
756 # um, yes, it's any value
757 stack.append(value)
758 elif opcode == 133: # coerce_s
759 assert isinstance(stack[-1], (type(None), compat_str))
760 elif opcode == 147: # decrement
761 value = stack.pop()
762 assert isinstance(value, int)
763 stack.append(value - 1)
764 elif opcode == 149: # typeof
765 value = stack.pop()
766 return {
767 _Undefined: 'undefined',
768 compat_str: 'String',
769 int: 'Number',
770 float: 'Number',
771 }[type(value)]
772 elif opcode == 160: # add
773 value2 = stack.pop()
774 value1 = stack.pop()
775 res = value1 + value2
776 stack.append(res)
777 elif opcode == 161: # subtract
778 value2 = stack.pop()
779 value1 = stack.pop()
780 res = value1 - value2
781 stack.append(res)
782 elif opcode == 162: # multiply
783 value2 = stack.pop()
784 value1 = stack.pop()
785 res = value1 * value2
786 stack.append(res)
787 elif opcode == 164: # modulo
788 value2 = stack.pop()
789 value1 = stack.pop()
790 res = value1 % value2
791 stack.append(res)
792 elif opcode == 168: # bitand
793 value2 = stack.pop()
794 value1 = stack.pop()
795 assert isinstance(value1, int)
796 assert isinstance(value2, int)
797 res = value1 & value2
798 stack.append(res)
799 elif opcode == 171: # equals
800 value2 = stack.pop()
801 value1 = stack.pop()
802 result = value1 == value2
803 stack.append(result)
804 elif opcode == 175: # greaterequals
805 value2 = stack.pop()
806 value1 = stack.pop()
807 result = value1 >= value2
808 stack.append(result)
809 elif opcode == 192: # increment_i
810 value = stack.pop()
811 assert isinstance(value, int)
812 stack.append(value + 1)
813 elif opcode == 208: # getlocal_0
814 stack.append(registers[0])
815 elif opcode == 209: # getlocal_1
816 stack.append(registers[1])
817 elif opcode == 210: # getlocal_2
818 stack.append(registers[2])
819 elif opcode == 211: # getlocal_3
820 stack.append(registers[3])
821 elif opcode == 212: # setlocal_0
822 registers[0] = stack.pop()
823 elif opcode == 213: # setlocal_1
824 registers[1] = stack.pop()
825 elif opcode == 214: # setlocal_2
826 registers[2] = stack.pop()
827 elif opcode == 215: # setlocal_3
828 registers[3] = stack.pop()
829 else:
830 raise NotImplementedError(
831 'Unsupported opcode %d' % opcode)
832
833 avm_class.method_pyfunctions[func_name] = resfunc
834 return resfunc
|
