mirror of
https://github.com/ytdl-org/youtube-dl
synced 2024-11-09 16:27:04 +01:00
832 lines
31 KiB
Python
832 lines
31 KiB
Python
from __future__ import unicode_literals
|
|
|
|
import collections
|
|
import io
|
|
import zlib
|
|
|
|
from .compat import (
|
|
compat_str,
|
|
compat_struct_unpack,
|
|
)
|
|
from .utils import (
|
|
ExtractorError,
|
|
)
|
|
|
|
|
|
def _extract_tags(file_contents):
|
|
if file_contents[1:3] != b'WS':
|
|
raise ExtractorError(
|
|
'Not an SWF file; header is %r' % file_contents[:3])
|
|
if file_contents[:1] == b'C':
|
|
content = zlib.decompress(file_contents[8:])
|
|
else:
|
|
raise NotImplementedError(
|
|
'Unsupported compression format %r' %
|
|
file_contents[:1])
|
|
|
|
# Determine number of bits in framesize rectangle
|
|
framesize_nbits = compat_struct_unpack('!B', content[:1])[0] >> 3
|
|
framesize_len = (5 + 4 * framesize_nbits + 7) // 8
|
|
|
|
pos = framesize_len + 2 + 2
|
|
while pos < len(content):
|
|
header16 = compat_struct_unpack('<H', content[pos:pos + 2])[0]
|
|
pos += 2
|
|
tag_code = header16 >> 6
|
|
tag_len = header16 & 0x3f
|
|
if tag_len == 0x3f:
|
|
tag_len = compat_struct_unpack('<I', content[pos:pos + 4])[0]
|
|
pos += 4
|
|
assert pos + tag_len <= len(content), \
|
|
('Tag %d ends at %d+%d - that\'s longer than the file (%d)'
|
|
% (tag_code, pos, tag_len, len(content)))
|
|
yield (tag_code, content[pos:pos + tag_len])
|
|
pos += tag_len
|
|
|
|
|
|
class _AVMClass_Object(object):
|
|
def __init__(self, avm_class):
|
|
self.avm_class = avm_class
|
|
|
|
def __repr__(self):
|
|
return '%s#%x' % (self.avm_class.name, id(self))
|
|
|
|
|
|
class _ScopeDict(dict):
|
|
def __init__(self, avm_class):
|
|
super(_ScopeDict, self).__init__()
|
|
self.avm_class = avm_class
|
|
|
|
def __repr__(self):
|
|
return '%s__Scope(%s)' % (
|
|
self.avm_class.name,
|
|
super(_ScopeDict, self).__repr__())
|
|
|
|
|
|
class _AVMClass(object):
|
|
def __init__(self, name_idx, name, static_properties=None):
|
|
self.name_idx = name_idx
|
|
self.name = name
|
|
self.method_names = {}
|
|
self.method_idxs = {}
|
|
self.methods = {}
|
|
self.method_pyfunctions = {}
|
|
self.static_properties = static_properties if static_properties else {}
|
|
|
|
self.variables = _ScopeDict(self)
|
|
self.constants = {}
|
|
|
|
def make_object(self):
|
|
return _AVMClass_Object(self)
|
|
|
|
def __repr__(self):
|
|
return '_AVMClass(%s)' % (self.name)
|
|
|
|
def register_methods(self, methods):
|
|
self.method_names.update(methods.items())
|
|
self.method_idxs.update(dict(
|
|
(idx, name)
|
|
for name, idx in methods.items()))
|
|
|
|
|
|
class _Multiname(object):
|
|
def __init__(self, kind):
|
|
self.kind = kind
|
|
|
|
def __repr__(self):
|
|
return '[MULTINAME kind: 0x%x]' % self.kind
|
|
|
|
|
|
def _read_int(reader):
|
|
res = 0
|
|
shift = 0
|
|
for _ in range(5):
|
|
buf = reader.read(1)
|
|
assert len(buf) == 1
|
|
b = compat_struct_unpack('<B', buf)[0]
|
|
res = res | ((b & 0x7f) << shift)
|
|
if b & 0x80 == 0:
|
|
break
|
|
shift += 7
|
|
return res
|
|
|
|
|
|
def _u30(reader):
|
|
res = _read_int(reader)
|
|
assert res & 0xf0000000 == 0
|
|
return res
|
|
_u32 = _read_int
|
|
|
|
|
|
def _s32(reader):
|
|
v = _read_int(reader)
|
|
if v & 0x80000000 != 0:
|
|
v = - ((v ^ 0xffffffff) + 1)
|
|
return v
|
|
|
|
|
|
def _s24(reader):
|
|
bs = reader.read(3)
|
|
assert len(bs) == 3
|
|
last_byte = b'\xff' if (ord(bs[2:3]) >= 0x80) else b'\x00'
|
|
return compat_struct_unpack('<i', bs + last_byte)[0]
|
|
|
|
|
|
def _read_string(reader):
|
|
slen = _u30(reader)
|
|
resb = reader.read(slen)
|
|
assert len(resb) == slen
|
|
return resb.decode('utf-8')
|
|
|
|
|
|
def _read_bytes(count, reader):
|
|
assert count >= 0
|
|
resb = reader.read(count)
|
|
assert len(resb) == count
|
|
return resb
|
|
|
|
|
|
def _read_byte(reader):
|
|
resb = _read_bytes(1, reader=reader)
|
|
res = compat_struct_unpack('<B', resb)[0]
|
|
return res
|
|
|
|
|
|
StringClass = _AVMClass('(no name idx)', 'String')
|
|
ByteArrayClass = _AVMClass('(no name idx)', 'ByteArray')
|
|
TimerClass = _AVMClass('(no name idx)', 'Timer')
|
|
TimerEventClass = _AVMClass('(no name idx)', 'TimerEvent', {'TIMER': 'timer'})
|
|
_builtin_classes = {
|
|
StringClass.name: StringClass,
|
|
ByteArrayClass.name: ByteArrayClass,
|
|
TimerClass.name: TimerClass,
|
|
TimerEventClass.name: TimerEventClass,
|
|
}
|
|
|
|
|
|
class _Undefined(object):
|
|
def __bool__(self):
|
|
return False
|
|
__nonzero__ = __bool__
|
|
|
|
def __hash__(self):
|
|
return 0
|
|
|
|
def __str__(self):
|
|
return 'undefined'
|
|
__repr__ = __str__
|
|
|
|
undefined = _Undefined()
|
|
|
|
|
|
class SWFInterpreter(object):
|
|
def __init__(self, file_contents):
|
|
self._patched_functions = {
|
|
(TimerClass, 'addEventListener'): lambda params: undefined,
|
|
}
|
|
code_tag = next(tag
|
|
for tag_code, tag in _extract_tags(file_contents)
|
|
if tag_code == 82)
|
|
p = code_tag.index(b'\0', 4) + 1
|
|
code_reader = io.BytesIO(code_tag[p:])
|
|
|
|
# Parse ABC (AVM2 ByteCode)
|
|
|
|
# Define a couple convenience methods
|
|
u30 = lambda *args: _u30(*args, reader=code_reader)
|
|
s32 = lambda *args: _s32(*args, reader=code_reader)
|
|
u32 = lambda *args: _u32(*args, reader=code_reader)
|
|
read_bytes = lambda *args: _read_bytes(*args, reader=code_reader)
|
|
read_byte = lambda *args: _read_byte(*args, reader=code_reader)
|
|
|
|
# minor_version + major_version
|
|
read_bytes(2 + 2)
|
|
|
|
# Constant pool
|
|
int_count = u30()
|
|
self.constant_ints = [0]
|
|
for _c in range(1, int_count):
|
|
self.constant_ints.append(s32())
|
|
self.constant_uints = [0]
|
|
uint_count = u30()
|
|
for _c in range(1, uint_count):
|
|
self.constant_uints.append(u32())
|
|
double_count = u30()
|
|
read_bytes(max(0, (double_count - 1)) * 8)
|
|
string_count = u30()
|
|
self.constant_strings = ['']
|
|
for _c in range(1, string_count):
|
|
s = _read_string(code_reader)
|
|
self.constant_strings.append(s)
|
|
namespace_count = u30()
|
|
for _c in range(1, namespace_count):
|
|
read_bytes(1) # kind
|
|
u30() # name
|
|
ns_set_count = u30()
|
|
for _c in range(1, ns_set_count):
|
|
count = u30()
|
|
for _c2 in range(count):
|
|
u30()
|
|
multiname_count = u30()
|
|
MULTINAME_SIZES = {
|
|
0x07: 2, # QName
|
|
0x0d: 2, # QNameA
|
|
0x0f: 1, # RTQName
|
|
0x10: 1, # RTQNameA
|
|
0x11: 0, # RTQNameL
|
|
0x12: 0, # RTQNameLA
|
|
0x09: 2, # Multiname
|
|
0x0e: 2, # MultinameA
|
|
0x1b: 1, # MultinameL
|
|
0x1c: 1, # MultinameLA
|
|
}
|
|
self.multinames = ['']
|
|
for _c in range(1, multiname_count):
|
|
kind = u30()
|
|
assert kind in MULTINAME_SIZES, 'Invalid multiname kind %r' % kind
|
|
if kind == 0x07:
|
|
u30() # namespace_idx
|
|
name_idx = u30()
|
|
self.multinames.append(self.constant_strings[name_idx])
|
|
elif kind == 0x09:
|
|
name_idx = u30()
|
|
u30()
|
|
self.multinames.append(self.constant_strings[name_idx])
|
|
else:
|
|
self.multinames.append(_Multiname(kind))
|
|
for _c2 in range(MULTINAME_SIZES[kind]):
|
|
u30()
|
|
|
|
# Methods
|
|
method_count = u30()
|
|
MethodInfo = collections.namedtuple(
|
|
'MethodInfo',
|
|
['NEED_ARGUMENTS', 'NEED_REST'])
|
|
method_infos = []
|
|
for method_id in range(method_count):
|
|
param_count = u30()
|
|
u30() # return type
|
|
for _ in range(param_count):
|
|
u30() # param type
|
|
u30() # name index (always 0 for youtube)
|
|
flags = read_byte()
|
|
if flags & 0x08 != 0:
|
|
# Options present
|
|
option_count = u30()
|
|
for c in range(option_count):
|
|
u30() # val
|
|
read_bytes(1) # kind
|
|
if flags & 0x80 != 0:
|
|
# Param names present
|
|
for _ in range(param_count):
|
|
u30() # param name
|
|
mi = MethodInfo(flags & 0x01 != 0, flags & 0x04 != 0)
|
|
method_infos.append(mi)
|
|
|
|
# Metadata
|
|
metadata_count = u30()
|
|
for _c in range(metadata_count):
|
|
u30() # name
|
|
item_count = u30()
|
|
for _c2 in range(item_count):
|
|
u30() # key
|
|
u30() # value
|
|
|
|
def parse_traits_info():
|
|
trait_name_idx = u30()
|
|
kind_full = read_byte()
|
|
kind = kind_full & 0x0f
|
|
attrs = kind_full >> 4
|
|
methods = {}
|
|
constants = None
|
|
if kind == 0x00: # Slot
|
|
u30() # Slot id
|
|
u30() # type_name_idx
|
|
vindex = u30()
|
|
if vindex != 0:
|
|
read_byte() # vkind
|
|
elif kind == 0x06: # Const
|
|
u30() # Slot id
|
|
u30() # type_name_idx
|
|
vindex = u30()
|
|
vkind = 'any'
|
|
if vindex != 0:
|
|
vkind = read_byte()
|
|
if vkind == 0x03: # Constant_Int
|
|
value = self.constant_ints[vindex]
|
|
elif vkind == 0x04: # Constant_UInt
|
|
value = self.constant_uints[vindex]
|
|
else:
|
|
return {}, None # Ignore silently for now
|
|
constants = {self.multinames[trait_name_idx]: value}
|
|
elif kind in (0x01, 0x02, 0x03): # Method / Getter / Setter
|
|
u30() # disp_id
|
|
method_idx = u30()
|
|
methods[self.multinames[trait_name_idx]] = method_idx
|
|
elif kind == 0x04: # Class
|
|
u30() # slot_id
|
|
u30() # classi
|
|
elif kind == 0x05: # Function
|
|
u30() # slot_id
|
|
function_idx = u30()
|
|
methods[function_idx] = self.multinames[trait_name_idx]
|
|
else:
|
|
raise ExtractorError('Unsupported trait kind %d' % kind)
|
|
|
|
if attrs & 0x4 != 0: # Metadata present
|
|
metadata_count = u30()
|
|
for _c3 in range(metadata_count):
|
|
u30() # metadata index
|
|
|
|
return methods, constants
|
|
|
|
# Classes
|
|
class_count = u30()
|
|
classes = []
|
|
for class_id in range(class_count):
|
|
name_idx = u30()
|
|
|
|
cname = self.multinames[name_idx]
|
|
avm_class = _AVMClass(name_idx, cname)
|
|
classes.append(avm_class)
|
|
|
|
u30() # super_name idx
|
|
flags = read_byte()
|
|
if flags & 0x08 != 0: # Protected namespace is present
|
|
u30() # protected_ns_idx
|
|
intrf_count = u30()
|
|
for _c2 in range(intrf_count):
|
|
u30()
|
|
u30() # iinit
|
|
trait_count = u30()
|
|
for _c2 in range(trait_count):
|
|
trait_methods, trait_constants = parse_traits_info()
|
|
avm_class.register_methods(trait_methods)
|
|
if trait_constants:
|
|
avm_class.constants.update(trait_constants)
|
|
|
|
assert len(classes) == class_count
|
|
self._classes_by_name = dict((c.name, c) for c in classes)
|
|
|
|
for avm_class in classes:
|
|
avm_class.cinit_idx = u30()
|
|
trait_count = u30()
|
|
for _c2 in range(trait_count):
|
|
trait_methods, trait_constants = parse_traits_info()
|
|
avm_class.register_methods(trait_methods)
|
|
if trait_constants:
|
|
avm_class.constants.update(trait_constants)
|
|
|
|
# Scripts
|
|
script_count = u30()
|
|
for _c in range(script_count):
|
|
u30() # init
|
|
trait_count = u30()
|
|
for _c2 in range(trait_count):
|
|
parse_traits_info()
|
|
|
|
# Method bodies
|
|
method_body_count = u30()
|
|
Method = collections.namedtuple('Method', ['code', 'local_count'])
|
|
self._all_methods = []
|
|
for _c in range(method_body_count):
|
|
method_idx = u30()
|
|
u30() # max_stack
|
|
local_count = u30()
|
|
u30() # init_scope_depth
|
|
u30() # max_scope_depth
|
|
code_length = u30()
|
|
code = read_bytes(code_length)
|
|
m = Method(code, local_count)
|
|
self._all_methods.append(m)
|
|
for avm_class in classes:
|
|
if method_idx in avm_class.method_idxs:
|
|
avm_class.methods[avm_class.method_idxs[method_idx]] = m
|
|
exception_count = u30()
|
|
for _c2 in range(exception_count):
|
|
u30() # from
|
|
u30() # to
|
|
u30() # target
|
|
u30() # exc_type
|
|
u30() # var_name
|
|
trait_count = u30()
|
|
for _c2 in range(trait_count):
|
|
parse_traits_info()
|
|
|
|
assert p + code_reader.tell() == len(code_tag)
|
|
|
|
def patch_function(self, avm_class, func_name, f):
|
|
self._patched_functions[(avm_class, func_name)] = f
|
|
|
|
def extract_class(self, class_name, call_cinit=True):
|
|
try:
|
|
res = self._classes_by_name[class_name]
|
|
except KeyError:
|
|
raise ExtractorError('Class %r not found' % class_name)
|
|
|
|
if call_cinit and hasattr(res, 'cinit_idx'):
|
|
res.register_methods({'$cinit': res.cinit_idx})
|
|
res.methods['$cinit'] = self._all_methods[res.cinit_idx]
|
|
cinit = self.extract_function(res, '$cinit')
|
|
cinit([])
|
|
|
|
return res
|
|
|
|
def extract_function(self, avm_class, func_name):
|
|
p = self._patched_functions.get((avm_class, func_name))
|
|
if p:
|
|
return p
|
|
if func_name in avm_class.method_pyfunctions:
|
|
return avm_class.method_pyfunctions[func_name]
|
|
if func_name in self._classes_by_name:
|
|
return self._classes_by_name[func_name].make_object()
|
|
if func_name not in avm_class.methods:
|
|
raise ExtractorError('Cannot find function %s.%s' % (
|
|
avm_class.name, func_name))
|
|
m = avm_class.methods[func_name]
|
|
|
|
def resfunc(args):
|
|
# Helper functions
|
|
coder = io.BytesIO(m.code)
|
|
s24 = lambda: _s24(coder)
|
|
u30 = lambda: _u30(coder)
|
|
|
|
registers = [avm_class.variables] + list(args) + [None] * m.local_count
|
|
stack = []
|
|
scopes = collections.deque([
|
|
self._classes_by_name, avm_class.constants, avm_class.variables])
|
|
while True:
|
|
opcode = _read_byte(coder)
|
|
if opcode == 9: # label
|
|
pass # Spec says: "Do nothing."
|
|
elif opcode == 16: # jump
|
|
offset = s24()
|
|
coder.seek(coder.tell() + offset)
|
|
elif opcode == 17: # iftrue
|
|
offset = s24()
|
|
value = stack.pop()
|
|
if value:
|
|
coder.seek(coder.tell() + offset)
|
|
elif opcode == 18: # iffalse
|
|
offset = s24()
|
|
value = stack.pop()
|
|
if not value:
|
|
coder.seek(coder.tell() + offset)
|
|
elif opcode == 19: # ifeq
|
|
offset = s24()
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
if value2 == value1:
|
|
coder.seek(coder.tell() + offset)
|
|
elif opcode == 20: # ifne
|
|
offset = s24()
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
if value2 != value1:
|
|
coder.seek(coder.tell() + offset)
|
|
elif opcode == 21: # iflt
|
|
offset = s24()
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
if value1 < value2:
|
|
coder.seek(coder.tell() + offset)
|
|
elif opcode == 32: # pushnull
|
|
stack.append(None)
|
|
elif opcode == 33: # pushundefined
|
|
stack.append(undefined)
|
|
elif opcode == 36: # pushbyte
|
|
v = _read_byte(coder)
|
|
stack.append(v)
|
|
elif opcode == 37: # pushshort
|
|
v = u30()
|
|
stack.append(v)
|
|
elif opcode == 38: # pushtrue
|
|
stack.append(True)
|
|
elif opcode == 39: # pushfalse
|
|
stack.append(False)
|
|
elif opcode == 40: # pushnan
|
|
stack.append(float('NaN'))
|
|
elif opcode == 42: # dup
|
|
value = stack[-1]
|
|
stack.append(value)
|
|
elif opcode == 44: # pushstring
|
|
idx = u30()
|
|
stack.append(self.constant_strings[idx])
|
|
elif opcode == 48: # pushscope
|
|
new_scope = stack.pop()
|
|
scopes.append(new_scope)
|
|
elif opcode == 66: # construct
|
|
arg_count = u30()
|
|
args = list(reversed(
|
|
[stack.pop() for _ in range(arg_count)]))
|
|
obj = stack.pop()
|
|
res = obj.avm_class.make_object()
|
|
stack.append(res)
|
|
elif opcode == 70: # callproperty
|
|
index = u30()
|
|
mname = self.multinames[index]
|
|
arg_count = u30()
|
|
args = list(reversed(
|
|
[stack.pop() for _ in range(arg_count)]))
|
|
obj = stack.pop()
|
|
|
|
if obj == StringClass:
|
|
if mname == 'String':
|
|
assert len(args) == 1
|
|
assert isinstance(args[0], (
|
|
int, compat_str, _Undefined))
|
|
if args[0] == undefined:
|
|
res = 'undefined'
|
|
else:
|
|
res = compat_str(args[0])
|
|
stack.append(res)
|
|
continue
|
|
else:
|
|
raise NotImplementedError(
|
|
'Function String.%s is not yet implemented'
|
|
% mname)
|
|
elif isinstance(obj, _AVMClass_Object):
|
|
func = self.extract_function(obj.avm_class, mname)
|
|
res = func(args)
|
|
stack.append(res)
|
|
continue
|
|
elif isinstance(obj, _AVMClass):
|
|
func = self.extract_function(obj, mname)
|
|
res = func(args)
|
|
stack.append(res)
|
|
continue
|
|
elif isinstance(obj, _ScopeDict):
|
|
if mname in obj.avm_class.method_names:
|
|
func = self.extract_function(obj.avm_class, mname)
|
|
res = func(args)
|
|
else:
|
|
res = obj[mname]
|
|
stack.append(res)
|
|
continue
|
|
elif isinstance(obj, compat_str):
|
|
if mname == 'split':
|
|
assert len(args) == 1
|
|
assert isinstance(args[0], compat_str)
|
|
if args[0] == '':
|
|
res = list(obj)
|
|
else:
|
|
res = obj.split(args[0])
|
|
stack.append(res)
|
|
continue
|
|
elif mname == 'charCodeAt':
|
|
assert len(args) <= 1
|
|
idx = 0 if len(args) == 0 else args[0]
|
|
assert isinstance(idx, int)
|
|
res = ord(obj[idx])
|
|
stack.append(res)
|
|
continue
|
|
elif isinstance(obj, list):
|
|
if mname == 'slice':
|
|
assert len(args) == 1
|
|
assert isinstance(args[0], int)
|
|
res = obj[args[0]:]
|
|
stack.append(res)
|
|
continue
|
|
elif mname == 'join':
|
|
assert len(args) == 1
|
|
assert isinstance(args[0], compat_str)
|
|
res = args[0].join(obj)
|
|
stack.append(res)
|
|
continue
|
|
raise NotImplementedError(
|
|
'Unsupported property %r on %r'
|
|
% (mname, obj))
|
|
elif opcode == 71: # returnvoid
|
|
res = undefined
|
|
return res
|
|
elif opcode == 72: # returnvalue
|
|
res = stack.pop()
|
|
return res
|
|
elif opcode == 73: # constructsuper
|
|
# Not yet implemented, just hope it works without it
|
|
arg_count = u30()
|
|
args = list(reversed(
|
|
[stack.pop() for _ in range(arg_count)]))
|
|
obj = stack.pop()
|
|
elif opcode == 74: # constructproperty
|
|
index = u30()
|
|
arg_count = u30()
|
|
args = list(reversed(
|
|
[stack.pop() for _ in range(arg_count)]))
|
|
obj = stack.pop()
|
|
|
|
mname = self.multinames[index]
|
|
assert isinstance(obj, _AVMClass)
|
|
|
|
# We do not actually call the constructor for now;
|
|
# we just pretend it does nothing
|
|
stack.append(obj.make_object())
|
|
elif opcode == 79: # callpropvoid
|
|
index = u30()
|
|
mname = self.multinames[index]
|
|
arg_count = u30()
|
|
args = list(reversed(
|
|
[stack.pop() for _ in range(arg_count)]))
|
|
obj = stack.pop()
|
|
if isinstance(obj, _AVMClass_Object):
|
|
func = self.extract_function(obj.avm_class, mname)
|
|
res = func(args)
|
|
assert res is undefined
|
|
continue
|
|
if isinstance(obj, _ScopeDict):
|
|
assert mname in obj.avm_class.method_names
|
|
func = self.extract_function(obj.avm_class, mname)
|
|
res = func(args)
|
|
assert res is undefined
|
|
continue
|
|
if mname == 'reverse':
|
|
assert isinstance(obj, list)
|
|
obj.reverse()
|
|
else:
|
|
raise NotImplementedError(
|
|
'Unsupported (void) property %r on %r'
|
|
% (mname, obj))
|
|
elif opcode == 86: # newarray
|
|
arg_count = u30()
|
|
arr = []
|
|
for i in range(arg_count):
|
|
arr.append(stack.pop())
|
|
arr = arr[::-1]
|
|
stack.append(arr)
|
|
elif opcode == 93: # findpropstrict
|
|
index = u30()
|
|
mname = self.multinames[index]
|
|
for s in reversed(scopes):
|
|
if mname in s:
|
|
res = s
|
|
break
|
|
else:
|
|
res = scopes[0]
|
|
if mname not in res and mname in _builtin_classes:
|
|
stack.append(_builtin_classes[mname])
|
|
else:
|
|
stack.append(res[mname])
|
|
elif opcode == 94: # findproperty
|
|
index = u30()
|
|
mname = self.multinames[index]
|
|
for s in reversed(scopes):
|
|
if mname in s:
|
|
res = s
|
|
break
|
|
else:
|
|
res = avm_class.variables
|
|
stack.append(res)
|
|
elif opcode == 96: # getlex
|
|
index = u30()
|
|
mname = self.multinames[index]
|
|
for s in reversed(scopes):
|
|
if mname in s:
|
|
scope = s
|
|
break
|
|
else:
|
|
scope = avm_class.variables
|
|
|
|
if mname in scope:
|
|
res = scope[mname]
|
|
elif mname in _builtin_classes:
|
|
res = _builtin_classes[mname]
|
|
else:
|
|
# Assume uninitialized
|
|
# TODO warn here
|
|
res = undefined
|
|
stack.append(res)
|
|
elif opcode == 97: # setproperty
|
|
index = u30()
|
|
value = stack.pop()
|
|
idx = self.multinames[index]
|
|
if isinstance(idx, _Multiname):
|
|
idx = stack.pop()
|
|
obj = stack.pop()
|
|
obj[idx] = value
|
|
elif opcode == 98: # getlocal
|
|
index = u30()
|
|
stack.append(registers[index])
|
|
elif opcode == 99: # setlocal
|
|
index = u30()
|
|
value = stack.pop()
|
|
registers[index] = value
|
|
elif opcode == 102: # getproperty
|
|
index = u30()
|
|
pname = self.multinames[index]
|
|
if pname == 'length':
|
|
obj = stack.pop()
|
|
assert isinstance(obj, (compat_str, list))
|
|
stack.append(len(obj))
|
|
elif isinstance(pname, compat_str): # Member access
|
|
obj = stack.pop()
|
|
if isinstance(obj, _AVMClass):
|
|
res = obj.static_properties[pname]
|
|
stack.append(res)
|
|
continue
|
|
|
|
assert isinstance(obj, (dict, _ScopeDict)),\
|
|
'Accessing member %r on %r' % (pname, obj)
|
|
res = obj.get(pname, undefined)
|
|
stack.append(res)
|
|
else: # Assume attribute access
|
|
idx = stack.pop()
|
|
assert isinstance(idx, int)
|
|
obj = stack.pop()
|
|
assert isinstance(obj, list)
|
|
stack.append(obj[idx])
|
|
elif opcode == 104: # initproperty
|
|
index = u30()
|
|
value = stack.pop()
|
|
idx = self.multinames[index]
|
|
if isinstance(idx, _Multiname):
|
|
idx = stack.pop()
|
|
obj = stack.pop()
|
|
obj[idx] = value
|
|
elif opcode == 115: # convert_
|
|
value = stack.pop()
|
|
intvalue = int(value)
|
|
stack.append(intvalue)
|
|
elif opcode == 128: # coerce
|
|
u30()
|
|
elif opcode == 130: # coerce_a
|
|
value = stack.pop()
|
|
# um, yes, it's any value
|
|
stack.append(value)
|
|
elif opcode == 133: # coerce_s
|
|
assert isinstance(stack[-1], (type(None), compat_str))
|
|
elif opcode == 147: # decrement
|
|
value = stack.pop()
|
|
assert isinstance(value, int)
|
|
stack.append(value - 1)
|
|
elif opcode == 149: # typeof
|
|
value = stack.pop()
|
|
return {
|
|
_Undefined: 'undefined',
|
|
compat_str: 'String',
|
|
int: 'Number',
|
|
float: 'Number',
|
|
}[type(value)]
|
|
elif opcode == 160: # add
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
res = value1 + value2
|
|
stack.append(res)
|
|
elif opcode == 161: # subtract
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
res = value1 - value2
|
|
stack.append(res)
|
|
elif opcode == 162: # multiply
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
res = value1 * value2
|
|
stack.append(res)
|
|
elif opcode == 164: # modulo
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
res = value1 % value2
|
|
stack.append(res)
|
|
elif opcode == 168: # bitand
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
assert isinstance(value1, int)
|
|
assert isinstance(value2, int)
|
|
res = value1 & value2
|
|
stack.append(res)
|
|
elif opcode == 171: # equals
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
result = value1 == value2
|
|
stack.append(result)
|
|
elif opcode == 175: # greaterequals
|
|
value2 = stack.pop()
|
|
value1 = stack.pop()
|
|
result = value1 >= value2
|
|
stack.append(result)
|
|
elif opcode == 192: # increment_i
|
|
value = stack.pop()
|
|
assert isinstance(value, int)
|
|
stack.append(value + 1)
|
|
elif opcode == 208: # getlocal_0
|
|
stack.append(registers[0])
|
|
elif opcode == 209: # getlocal_1
|
|
stack.append(registers[1])
|
|
elif opcode == 210: # getlocal_2
|
|
stack.append(registers[2])
|
|
elif opcode == 211: # getlocal_3
|
|
stack.append(registers[3])
|
|
elif opcode == 212: # setlocal_0
|
|
registers[0] = stack.pop()
|
|
elif opcode == 213: # setlocal_1
|
|
registers[1] = stack.pop()
|
|
elif opcode == 214: # setlocal_2
|
|
registers[2] = stack.pop()
|
|
elif opcode == 215: # setlocal_3
|
|
registers[3] = stack.pop()
|
|
else:
|
|
raise NotImplementedError(
|
|
'Unsupported opcode %d' % opcode)
|
|
|
|
avm_class.method_pyfunctions[func_name] = resfunc
|
|
return resfunc
|