SickGear/lib/hachoir/parser/container/action_script.py
2023-02-09 13:41:15 +00:00

741 lines
24 KiB
Python

"""
SWF (Macromedia/Adobe Flash) file parser.
Documentation:
- Alexis' SWF Reference:
http://www.m2osw.com/swf_alexref.html
- Tamarin ABC format:
http://www.m2osw.com/abc_format.html
Authors: Sebastien Ponce, Robert Xiao
Creation date: 26 April 2008
"""
from hachoir.field import (FieldSet, ParserError,
Bit, Bits, UInt8, UInt32, Int16, UInt16, Float32, Float64, CString, Enum,
RawBytes, String)
from hachoir.core.endian import LITTLE_ENDIAN
from hachoir.field.float import FloatExponent
from struct import unpack
class FlashPackedInteger(Bits):
def __init__(self, parent, name, signed=False, nbits=30, description=None):
Bits.__init__(self, parent, name, 8, description)
stream = self._parent.stream
addr = self.absolute_address
size = 0
value = 0
mult = 1
while True:
byte = stream.readBits(addr + size, 8, LITTLE_ENDIAN)
value += mult * (byte & 0x7f)
size += 8
mult <<= 7
if byte < 128:
break
self._size = size
if signed and (1 << (nbits - 1)) <= value:
value -= (1 << nbits)
self.createValue = lambda: value
class FlashU30(FlashPackedInteger):
def __init__(self, parent, name, description=None):
FlashPackedInteger.__init__(
self, parent, name, signed=False, nbits=30, description=description)
class FlashS32(FlashPackedInteger):
def __init__(self, parent, name, description=None):
FlashPackedInteger.__init__(
self, parent, name, signed=True, nbits=32, description=description)
class FlashU32(FlashPackedInteger):
def __init__(self, parent, name, description=None):
FlashPackedInteger.__init__(
self, parent, name, signed=False, nbits=32, description=description)
class FlashFloat64(FieldSet):
def createFields(self):
yield Bits(self, "mantissa_high", 20)
yield FloatExponent(self, "exponent", 11)
yield Bit(self, "negative")
yield Bits(self, "mantissa_low", 32)
def createValue(self):
# Manual computation:
# mantissa = mantissa_high * 2^32 + mantissa_low
# float = 2^exponent + (1 + mantissa / 2^52)
# (and float is negative if negative=True)
bytes = self.parent.stream.readBytes(
self.absolute_address, self.size // 8)
# Mix bytes: xxxxyyyy <=> yyyyxxxx
bytes = bytes[4:8] + bytes[0:4]
return unpack('<d', bytes)[0]
TYPE_INFO = {
0x00: (CString, "Cstring[]"),
0x01: (Float32, "Float[]"),
0x02: (None, "Null[]"),
0x03: (None, "Undefined[]"),
0x04: (UInt8, "Register[]"),
0x05: (UInt8, "Boolean[]"),
0x06: (FlashFloat64, "Double[]"),
0x07: (UInt32, "Integer[]"),
0x08: (UInt8, "Dictionary_Lookup_Index[]"),
0x09: (UInt16, "Large_Dictionary_Lookup_Index[]"),
}
def parseBranch(parent, size):
yield Int16(parent, "offset")
def parseDeclareFunction(parent, size):
yield CString(parent, "name")
argCount = UInt16(parent, "arg_count")
yield argCount
for i in range(argCount.value):
yield CString(parent, "arg[]")
yield UInt16(parent, "function_length")
def parseDeclareFunctionV7(parent, size):
yield CString(parent, "name")
argCount = UInt16(parent, "arg_count")
yield argCount
yield UInt8(parent, "reg_count")
yield Bits(parent, "reserved", 7)
yield Bit(parent, "preload_global")
yield Bit(parent, "preload_parent")
yield Bit(parent, "preload_root")
yield Bit(parent, "suppress_super")
yield Bit(parent, "preload_super")
yield Bit(parent, "suppress_arguments")
yield Bit(parent, "preload_arguments")
yield Bit(parent, "suppress_this")
yield Bit(parent, "preload_this")
for i in range(argCount.value):
yield UInt8(parent, "register[]")
yield CString(parent, "arg[]")
yield UInt16(parent, "function_length")
def parseTry(parent, size):
yield Bits(parent, "reserved", 5)
catchInReg = Bit(parent, "catch_in_register")
yield catchInReg
yield Bit(parent, "finally")
yield Bit(parent, "catch")
yield UInt8(parent, "try_size")
yield UInt8(parent, "catch_size")
yield UInt8(parent, "finally_size")
if catchInReg.value:
yield CString(parent, "name")
else:
yield UInt8(parent, "register")
def parsePushData(parent, size):
while not parent.eof:
codeobj = UInt8(parent, "data_type[]")
yield codeobj
code = codeobj.value
if code not in TYPE_INFO:
raise ParserError("Unknown type in Push_Data : " + hex(code))
parser, name = TYPE_INFO[code]
if parser:
yield parser(parent, name)
def parseSetTarget(parent, size):
yield CString(parent, "target")
def parseWith(parent, size):
yield UInt16(parent, "size")
def parseGetURL(parent, size):
yield CString(parent, "url")
yield CString(parent, "target")
def parseGetURL2(parent, size):
yield UInt8(parent, "method")
def parseGotoExpression(parent, size):
yield UInt8(parent, "play")
def parseGotoFrame(parent, size):
yield UInt16(parent, "frame_no")
def parseGotoLabel(parent, size):
yield CString(parent, "label")
def parseWaitForFrame(parent, size):
yield UInt16(parent, "frame")
yield UInt8(parent, "skip")
def parseWaitForFrameDyn(parent, size):
yield UInt8(parent, "skip")
def parseDeclareDictionary(parent, size):
count = UInt16(parent, "count")
yield count
for i in range(count.value):
yield CString(parent, "dictionnary[]")
def parseStoreRegister(parent, size):
yield UInt8(parent, "register")
def parseStrictMode(parent, size):
yield UInt8(parent, "strict")
class Instruction(FieldSet):
ACTION_INFO = {
0x00: ("end[]", "End", None),
0x99: ("Branch_Always[]", "Branch Always", parseBranch),
0x9D: ("Branch_If_True[]", "Branch If True", parseBranch),
0x3D: ("Call_Function[]", "Call Function", None),
0x52: ("Call_Method[]", "Call Method", None),
0x9B: ("Declare_Function[]", "Declare Function", parseDeclareFunction),
0x8E: ("Declare_Function_V7[]", "Declare Function (V7)", parseDeclareFunctionV7),
0x3E: ("Return[]", "Return", None),
0x2A: ("Throw[]", "Throw", None),
0x8F: ("Try[]", "Try", parseTry),
# Stack Control
0x4C: ("Duplicate[]", "Duplicate", None),
0x96: ("Push_Data[]", "Push Data", parsePushData),
0x4D: ("Swap[]", "Swap", None),
# Action Script Context
0x8B: ("Set_Target[]", "Set Target", parseSetTarget),
0x20: ("Set_Target_dynamic[]", "Set Target (dynamic)", None),
0x94: ("With[]", "With", parseWith),
# Movie Control
0x9E: ("Call_Frame[]", "Call Frame", None),
0x83: ("Get_URL[]", "Get URL", parseGetURL),
0x9A: ("Get_URL2[]", "Get URL2", parseGetURL2),
0x9F: ("Goto_Expression[]", "Goto Expression", parseGotoExpression),
0x81: ("Goto_Frame[]", "Goto Frame", parseGotoFrame),
0x8C: ("Goto_Label[]", "Goto Label", parseGotoLabel),
0x04: ("Next_Frame[]", "Next Frame", None),
0x06: ("Play[]", "Play", None),
0x05: ("Previous_Frame[]", "Previous Frame", None),
0x07: ("Stop[]", "Stop", None),
0x08: ("Toggle_Quality[]", "Toggle Quality", None),
0x8A: ("Wait_For_Frame[]", "Wait For Frame", parseWaitForFrame),
0x8D: ("Wait_For_Frame_dynamic[]", "Wait For Frame (dynamic)", parseWaitForFrameDyn),
# Sound
0x09: ("Stop_Sound[]", "Stop Sound", None),
# Arithmetic
0x0A: ("Add[]", "Add", None),
0x47: ("Add_typed[]", "Add (typed)", None),
0x51: ("Decrement[]", "Decrement", None),
0x0D: ("Divide[]", "Divide", None),
0x50: ("Increment[]", "Increment", None),
0x18: ("Integral_Part[]", "Integral Part", None),
0x3F: ("Modulo[]", "Modulo", None),
0x0C: ("Multiply[]", "Multiply", None),
0x4A: ("Number[]", "Number", None),
0x0B: ("Subtract[]", "Subtract", None),
# Comparisons
0x0E: ("Equal[]", "Equal", None),
0x49: ("Equal_typed[]", "Equal (typed)", None),
0x66: ("Strict_Equal[]", "Strict Equal", None),
0x67: ("Greater_Than_typed[]", "Greater Than (typed)", None),
0x0F: ("Less_Than[]", "Less Than", None),
0x48: ("Less_Than_typed[]", "Less Than (typed)", None),
0x13: ("String_Equal[]", "String Equal", None),
0x68: ("String_Greater_Than[]", "String Greater Than", None),
0x29: ("String_Less_Than[]", "String Less Than", None),
# Logical and Bit Wise
0x60: ("And[]", "And", None),
0x10: ("Logical_And[]", "Logical And", None),
0x12: ("Logical_Not[]", "Logical Not", None),
0x11: ("Logical_Or[]", "Logical Or", None),
0x61: ("Or[]", "Or", None),
0x63: ("Shift_Left[]", "Shift Left", None),
0x64: ("Shift_Right[]", "Shift Right", None),
0x65: ("Shift_Right_Unsigned[]", "Shift Right Unsigned", None),
0x62: ("Xor[]", "Xor", None),
# Strings & Characters (See the String Object also)
0x33: ("Chr[]", "Chr", None),
0x37: ("Chr_multi-bytes[]", "Chr (multi-bytes)", None),
0x21: ("Concatenate_Strings[]", "Concatenate Strings", None),
0x32: ("Ord[]", "Ord", None),
0x36: ("Ord_multi-bytes[]", "Ord (multi-bytes)", None),
0x4B: ("String[]", "String", None),
0x14: ("String_Length[]", "String Length", None),
0x31: ("String_Length_multi-bytes[]", "String Length (multi-bytes)", None),
0x15: ("SubString[]", "SubString", None),
0x35: ("SubString_multi-bytes[]", "SubString (multi-bytes)", None),
# Properties
0x22: ("Get_Property[]", "Get Property", None),
0x23: ("Set_Property[]", "Set Property", None),
# Objects
0x2B: ("Cast_Object[]", "Cast Object", None),
0x42: ("Declare_Array[]", "Declare Array", None),
0x88: ("Declare_Dictionary[]", "Declare Dictionary", parseDeclareDictionary),
0x43: ("Declare_Object[]", "Declare Object", None),
0x3A: ("Delete[]", "Delete", None),
0x3B: ("Delete_All[]", "Delete All", None),
0x24: ("Duplicate_Sprite[]", "Duplicate Sprite", None),
0x46: ("Enumerate[]", "Enumerate", None),
0x55: ("Enumerate_Object[]", "Enumerate Object", None),
0x69: ("Extends[]", "Extends", None),
0x4E: ("Get_Member[]", "Get Member", None),
0x45: ("Get_Target[]", "Get Target", None),
0x2C: ("Implements[]", "Implements", None),
0x54: ("Instance_Of[]", "Instance Of", None),
0x40: ("New[]", "New", None),
0x53: ("New_Method[]", "New Method", None),
0x25: ("Remove_Sprite[]", "Remove Sprite", None),
0x4F: ("Set_Member[]", "Set Member", None),
0x44: ("Type_Of[]", "Type Of", None),
# Variables
0x41: ("Declare_Local_Variable[]", "Declare Local Variable", None),
0x1C: ("Get_Variable[]", "Get Variable", None),
0x3C: ("Set_Local_Variable[]", "Set Local Variable", None),
0x1D: ("Set_Variable[]", "Set Variable", None),
# Miscellaneous
0x2D: ("FSCommand2[]", "FSCommand2", None),
0x34: ("Get_Timer[]", "Get Timer", None),
0x30: ("Random[]", "Random", None),
0x27: ("Start_Drag[]", "Start Drag", None),
0x28: ("Stop_Drag[]", "Stop Drag", None),
0x87: ("Store_Register[]", "Store Register", parseStoreRegister),
0x89: ("Strict_Mode[]", "Strict Mode", parseStrictMode),
0x26: ("Trace[]", "Trace", None),
}
def __init__(self, *args):
FieldSet.__init__(self, *args)
code = self["action_id"].value
if code & 128:
self._size = (3 + self["action_length"].value) * 8
else:
self._size = 8
if code in self.ACTION_INFO:
self._name, self._description, self.parser = self.ACTION_INFO[code]
else:
self.parser = None
def createFields(self):
yield Bits(self, "action_id", 8)
if not (self["action_id"].value & 128):
return
yield UInt16(self, "action_length")
size = self["action_length"].value
if not size:
return
if self.parser:
yield from self.parser(self, size)
else:
yield RawBytes(self, "action_data", size)
def createDescription(self):
return self._description
def __str__(self):
r = str(self._description)
for f in self:
if f.name not in ("action_id", "action_length", "count") and not f.name.startswith("data_type"):
r = r + "\n " + \
str((self.address + f.address) // 8) + \
" " + str(f.name) + "=" + str(f.value)
return r
class ActionScript(FieldSet):
def createFields(self):
while not self.eof:
yield Instruction(self, "instr[]")
def __str__(self):
r = ""
for f in self:
r = r + str(f.address // 8) + " " + str(f) + "\n"
return r
def parseActionScript(parent, size):
yield ActionScript(parent, "action", size=size * 8)
def FindABC(field):
while not getattr(field, "isABC", False):
field = field.parent
if field is None:
return None
return field
def GetConstant(field, pool, index):
if index == 0:
return None
return FindABC(field)["constant_%s_pool/constant[%i]" % (pool, index)]
def GetMultiname(field, index):
fld = GetConstant(field, "multiname", index)
if fld is None:
return "*"
if "name_index" not in fld:
return "?"
fld2 = GetConstant(fld, "string", fld["name_index"].value)
if fld2 is None:
return "*"
return fld2.value
class ABCStringIndex(FlashU30):
def createDisplay(self):
fld = GetConstant(self, "string", self.value)
if fld is None:
return "*"
return fld.value
class ABCNSIndex(FlashU30):
def createDisplay(self):
fld = GetConstant(self, "namespace", self.value)
if fld is None:
return "*"
return fld.display
class ABCMethodIndex(FlashU30):
def createDisplay(self):
fld = FindABC(self)["method_array/method[%i]" % self.value]
if fld is None:
return "*"
return fld.description
class ABCMultinameIndex(FlashU30):
def createDisplay(self):
return GetMultiname(self, self.value)
class ABCConstantPool(FieldSet):
def __init__(self, parent, name, klass):
FieldSet.__init__(self, parent, 'constant_%s_pool' % name)
self.klass = klass
def createFields(self):
ctr = FlashU30(self, "count")
yield ctr
for i in range(ctr.value - 1):
yield self.klass(self, "constant[%i]" % (i + 1))
class ABCObjectArray(FieldSet):
def __init__(self, parent, name, klass):
self.arrname = name
FieldSet.__init__(self, parent, name + '_array')
self.klass = klass
def createFields(self):
ctr = FlashU30(self, "count")
yield ctr
for i in range(ctr.value):
yield self.klass(self, self.arrname + "[]")
class ABCClassArray(FieldSet):
def __init__(self, parent, name):
FieldSet.__init__(self, parent, name + '_array')
def createFields(self):
ctr = FlashU30(self, "count")
yield ctr
for i in range(ctr.value):
yield ABCInstanceInfo(self, "instance[]")
for i in range(ctr.value):
yield ABCClassInfo(self, "class[]")
class ABCConstantString(FieldSet):
def createFields(self):
yield FlashU30(self, "length")
size = self["length"].value
if size:
yield String(self, "data", size, charset="UTF-8")
def createDisplay(self):
if "data" in self:
return self["data"].display
else:
return "<empty>"
def createValue(self):
if "data" in self:
return self["data"].value
else:
return ""
class ABCConstantNamespace(FieldSet):
NAMESPACE_KIND = {8: "Namespace",
5: "PrivateNamespace",
22: "PackageNamespace",
23: "PacakgeInternalNamespace",
24: "ProtectedNamespace",
25: "ExplicitNamespace",
26: "MultinameL"}
def createFields(self):
yield Enum(UInt8(self, "kind"), self.NAMESPACE_KIND)
yield ABCStringIndex(self, "name_index")
def createDisplay(self):
return "%s %s" % (self["kind"].display, self["name_index"].display)
def createValue(self):
return self["name_index"].value
class ABCConstantNamespaceSet(FieldSet):
def createFields(self):
ctr = FlashU30(self, "namespace_count")
yield ctr
for i in range(ctr.value):
yield ABCNSIndex(self, "namespace_index[]")
def createDescription(self):
ret = [fld.display for fld in self.array("namespace_index")]
return ', '.join(ret)
class ABCConstantMultiname(FieldSet):
MULTINAME_KIND = {7: "Qname",
13: "QnameA",
9: "Multiname",
14: "MultinameA",
15: "RTQname",
16: "RTQnameA",
27: "MultinameL",
17: "RTQnameL",
18: "RTQnameLA"}
def createFields(self):
yield Enum(UInt8(self, "kind"), self.MULTINAME_KIND)
kind = self["kind"].value
if kind in (7, 13): # Qname
yield FlashU30(self, "namespace_index")
yield ABCStringIndex(self, "name_index")
elif kind in (9, 14): # Multiname
yield ABCStringIndex(self, "name_index")
yield FlashU30(self, "namespace_set_index")
elif kind in (15, 16): # RTQname
yield ABCStringIndex(self, "name_index")
elif kind == 27: # MultinameL
yield FlashU30(self, "namespace_set_index")
elif kind in (17, 18): # RTQnameL
pass
def createDisplay(self):
kind = self["kind"].display
if "name_index" in self:
return kind + " " + self["name_index"].display
return kind
def createValue(self):
return self["kind"].value
class ABCTrait(FieldSet):
TRAIT_KIND = {0: "slot",
1: "method",
2: "getter",
3: "setter",
4: "class",
5: "function",
6: "const", }
def createFields(self):
yield ABCMultinameIndex(self, "name_index")
yield Enum(Bits(self, "kind", 4), self.TRAIT_KIND)
yield Enum(Bit(self, "is_final"), {True: 'final', False: 'virtual'})
yield Enum(Bit(self, "is_override"), {True: 'override', False: 'new'})
yield Bit(self, "has_metadata")
yield Bits(self, "unused", 1)
kind = self["kind"].value
if kind in (0, 6): # slot, const
yield FlashU30(self, "slot_id")
yield ABCMultinameIndex(self, "type_index")
# TODO reference appropriate constant pool using value_kind
yield FlashU30(self, "value_index")
if self['value_index'].value != 0:
yield UInt8(self, "value_kind")
elif kind in (1, 2, 3): # method, getter, setter
yield FlashU30(self, "disp_id")
yield ABCMethodIndex(self, "method_info")
elif kind == 4: # class
yield FlashU30(self, "disp_id")
yield FlashU30(self, "class_info")
elif kind == 5: # function
yield FlashU30(self, "disp_id")
yield ABCMethodIndex(self, "method_info")
if self['has_metadata'].value:
yield ABCObjectArray(self, "metadata", FlashU30)
class ABCValueKind(FieldSet):
def createFields(self):
yield FlashU30(self, "value_index")
yield UInt8(self, "value_kind")
class ABCMethodInfo(FieldSet):
def createFields(self):
yield FlashU30(self, "param_count")
yield ABCMultinameIndex(self, "ret_type")
for i in range(self["param_count"].value):
yield ABCMultinameIndex(self, "param_type[]")
yield ABCStringIndex(self, "name_index")
yield Bit(self, "need_arguments")
yield Bit(self, "need_activation")
yield Bit(self, "need_rest")
yield Bit(self, "has_optional")
yield Bit(self, "ignore_rest")
yield Bit(self, "explicit")
yield Bit(self, "setsdxns")
yield Bit(self, "has_paramnames")
if self["has_optional"].value:
yield ABCObjectArray(self, "optional", ABCValueKind)
if self["has_paramnames"].value:
for i in range(self["param_count"].value):
yield FlashU30(self, "param_name[]")
def createDescription(self):
ret = GetMultiname(self, self["ret_type"].value)
ret += " " + self["name_index"].display
ret += "(" + ", ".join(GetMultiname(self, fld.value)
for fld in self.array("param_type")) + ")"
return ret
class ABCMetadataInfo(FieldSet):
def createFields(self):
yield ABCStringIndex(self, "name_index")
yield FlashU30(self, "values_count")
count = self["values_count"].value
for i in range(count):
yield FlashU30(self, "key[]")
for i in range(count):
yield FlashU30(self, "value[]")
class ABCInstanceInfo(FieldSet):
def createFields(self):
yield ABCMultinameIndex(self, "name_index")
yield ABCMultinameIndex(self, "super_index")
yield Bit(self, "is_sealed")
yield Bit(self, "is_final")
yield Bit(self, "is_interface")
yield Bit(self, "is_protected")
yield Bits(self, "unused", 4)
if self['is_protected'].value:
yield ABCNSIndex(self, "protectedNS")
yield FlashU30(self, "interfaces_count")
for i in range(self["interfaces_count"].value):
yield ABCMultinameIndex(self, "interface[]")
yield ABCMethodIndex(self, "iinit_index")
yield ABCObjectArray(self, "trait", ABCTrait)
class ABCClassInfo(FieldSet):
def createFields(self):
yield ABCMethodIndex(self, "cinit_index")
yield ABCObjectArray(self, "trait", ABCTrait)
class ABCScriptInfo(FieldSet):
def createFields(self):
yield ABCMethodIndex(self, "init_index")
yield ABCObjectArray(self, "trait", ABCTrait)
class ABCException(FieldSet):
def createFields(self):
yield FlashU30(self, "start")
yield FlashU30(self, "end")
yield FlashU30(self, "target")
yield FlashU30(self, "type_index")
yield FlashU30(self, "name_index")
class ABCMethodBody(FieldSet):
def createFields(self):
yield ABCMethodIndex(self, "method_info")
yield FlashU30(self, "max_stack")
yield FlashU30(self, "max_regs")
yield FlashU30(self, "scope_depth")
yield FlashU30(self, "max_scope")
yield FlashU30(self, "code_length")
yield RawBytes(self, "code", self['code_length'].value)
yield ABCObjectArray(self, "exception", ABCException)
yield ABCObjectArray(self, "trait", ABCTrait)
def parseABC(parent, size):
code = parent["code"].value
if code == parent.TAG_DO_ABC_DEFINE:
yield UInt32(parent, "action_flags")
yield CString(parent, "action_name")
yield UInt16(parent, "minor_version")
yield UInt16(parent, "major_version")
parent.isABC = True
yield ABCConstantPool(parent, "int", FlashS32)
yield ABCConstantPool(parent, "uint", FlashU32)
yield ABCConstantPool(parent, "double", Float64)
yield ABCConstantPool(parent, "string", ABCConstantString)
yield ABCConstantPool(parent, "namespace", ABCConstantNamespace)
yield ABCConstantPool(parent, "namespace_set", ABCConstantNamespaceSet)
yield ABCConstantPool(parent, "multiname", ABCConstantMultiname)
yield ABCObjectArray(parent, "method", ABCMethodInfo)
yield ABCObjectArray(parent, "metadata", ABCMetadataInfo)
yield ABCClassArray(parent, "class")
yield ABCObjectArray(parent, "script", ABCScriptInfo)
yield ABCObjectArray(parent, "body", ABCMethodBody)