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Copy pathSerializedFile.py
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582 lines (481 loc) · 19.9 KB
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from __future__ import annotations
import re
from ntpath import basename
from typing import TYPE_CHECKING, Dict, Generator, Iterator, List, Optional, Tuple
from attrs import define
from .. import config
from ..enums import BuildTarget, ClassIDType, CommonString
from ..helpers.TypeTreeHelper import TypeTreeNode
from ..streams import EndianBinaryWriter
from . import BundleFile, File, ObjectReader
if TYPE_CHECKING:
from ..classes import AssetBundle, AssetInfo, Object, PPtr
from ..files import ObjectReader
from ..streams.EndianBinaryReader import EndianBinaryReader
@define(slots=True)
class SerializedFileHeader:
metadata_size: int
file_size: int
version: int
data_offset: int
endian: str
reserved: bytes
def __init__(self, reader: EndianBinaryReader):
(
self.metadata_size,
self.file_size,
self.version,
self.data_offset,
) = reader.read_u_int_array(4)
@define(slots=True)
class LocalSerializedObjectIdentifier: # script type
local_serialized_file_index: int
local_identifier_in_file: int
def __init__(self, header: SerializedFileHeader, reader: EndianBinaryReader):
self.local_serialized_file_index = reader.read_int()
if header.version < 14:
self.local_identifier_in_file = reader.read_int()
else:
reader.align_stream()
self.local_identifier_in_file = reader.read_long()
def write(self, header: SerializedFileHeader, writer: EndianBinaryWriter):
writer.write_int(self.local_serialized_file_index)
if header.version < 14:
writer.write_int(self.local_identifier_in_file)
else:
writer.align_stream()
writer.write_long(self.local_identifier_in_file)
@define(slots=True)
class FileIdentifier: # external
path: str
temp_empty: Optional[str] = None
guid: Optional[bytes] = None
type: Optional[int] = None
# enum { kNonAssetType = 0, kDeprecatedCachedAssetType = 1, kSerializedAssetType = 2, kMetaAssetType = 3 };
@property
def name(self):
return basename(self.path)
def __repr__(self):
return f"<{self.__class__.__name__}({self.path})>"
def __init__(self, header: SerializedFileHeader, reader: EndianBinaryReader):
if header.version >= 6:
self.temp_empty = reader.read_string_to_null()
if header.version >= 5:
self.guid = reader.read_bytes(16)
self.type = reader.read_int()
self.path = reader.read_string_to_null()
def write(self, header: SerializedFileHeader, writer: EndianBinaryWriter):
if header.version >= 6:
assert self.temp_empty is not None
writer.write_string_to_null(self.temp_empty)
if header.version >= 5:
assert (
self.guid is not None
and self.type is not None
)
writer.write_bytes(self.guid)
writer.write_int(self.type)
writer.write_string_to_null(self.path)
@define(slots=True)
class BuildType:
build_type: str
def __init__(self, build_type):
self.build_type = build_type
@property
def IsAlpha(self):
return self.build_type == "a"
@property
def IsPatch(self):
return self.build_type == "p"
@define(slots=True, init=False)
class SerializedType:
class_id: int
is_stripped_type: Optional[bool] = None
script_type_index: int = -1
script_id: Optional[bytes] = None # Hash128
old_type_hash: Optional[bytes] = None # Hash128
node: Optional[TypeTreeNode] = None
# ref type
m_ClassName: Optional[str] = None
m_NameSpace: Optional[str] = None
m_AssemblyName: Optional[str] = None
# 21+
type_dependencies: Optional[Tuple[int, ...]] = None
def __init__(
self,
reader: EndianBinaryReader,
serialized_file: SerializedFile,
is_ref_type: bool,
):
version = serialized_file.header.version
self.class_id = reader.read_int()
self.__attrs_init__(self.class_id)
if version >= 16:
self.is_stripped_type = reader.read_boolean()
if version >= 17:
self.script_type_index = reader.read_short()
if version >= 13:
if (
(is_ref_type and self.script_type_index >= 0)
or (version < 16 and self.class_id < 0)
or (version >= 16 and self.class_id == 114)
):
self.script_id = reader.read_bytes(16)
self.old_type_hash = reader.read_bytes(16)
if serialized_file._enable_type_tree:
if version >= 12 or version == 10:
self.node = TypeTreeNode.parse_blob(reader, version)
else:
self.node = TypeTreeNode.parse(reader, version)
if version >= 21:
if is_ref_type:
self.m_ClassName = reader.read_string_to_null()
self.m_NameSpace = reader.read_string_to_null()
self.m_AssemblyName = reader.read_string_to_null()
else:
self.type_dependencies = reader.read_int_array()
def write(
self,
serialized_file: SerializedFile,
writer: EndianBinaryWriter,
is_ref_type: bool,
):
version = serialized_file.header.version
writer.write_int(self.class_id)
if version >= 16:
assert self.is_stripped_type is not None
writer.write_boolean(self.is_stripped_type)
if version >= 17:
assert self.script_type_index is not None
writer.write_short(self.script_type_index)
if version >= 13:
if (
(is_ref_type and self.script_type_index >= 0)
or (version < 16 and self.class_id < 0)
or (version >= 16 and self.class_id == 114)
):
assert self.script_id is not None
writer.write_bytes(self.script_id) # Hash128
assert self.old_type_hash is not None
writer.write_bytes(self.old_type_hash) # Hash128
if serialized_file._enable_type_tree:
assert self.node is not None
if version >= 12 or version == 10:
self.node.dump_blob(writer, version)
else:
serialized_file.dump(writer, version)
if version >= 21:
if is_ref_type:
assert (
self.m_ClassName is not None
and self.m_NameSpace is not None
and self.m_AssemblyName is not None
)
writer.write_string_to_null(self.m_ClassName)
writer.write_string_to_null(self.m_NameSpace)
writer.write_string_to_null(self.m_AssemblyName)
else:
assert self.type_dependencies is not None
writer.write_int_array(self.type_dependencies, True)
@property
def nodes(self) -> Optional[TypeTreeNode]:
# for compatibility with old versions
return self.node
class SerializedFile(File.File):
reader: EndianBinaryReader
unity_version: str
build_type: BuildType
target_platform: BuildTarget
_enable_type_tree: bool
types: List[SerializedType]
script_types: List[LocalSerializedObjectIdentifier]
externals: List[FileIdentifier]
ref_types: Optional[List[SerializedType]]
objects: Dict[int, ObjectReader]
unknown: int
header: SerializedFileHeader
_m_target_platform: int
big_id_enabled: int
userInformation: Optional[str]
assetbundle: Optional[AssetBundle]
_cache: Dict[str, Object]
@property
def files(self):
if self.objects:
return self.objects
return {}
@files.setter
def files(self, value):
self.objects = value
def __init__(self, reader: EndianBinaryReader, parent=None, name=None, **kwargs):
super().__init__(parent=parent, name=name, **kwargs)
self.reader = reader
self.unity_version = "2.5.0f5"
self.version = (0, 0, 0, 0)
self.build_type = BuildType("")
self.target_platform = BuildTarget.UnknownPlatform
self._enable_type_tree = True
self.types = []
self.script_types = []
self.externals = []
self.objects = {}
# used to speed up mass asset extraction
# some assets refer to each other, so by keeping the result
# of specific assets cached the extraction can be speed up by a lot.
# used by: Sprite (Texture2D (with alpha) cached),
self._cache = {}
self.unknown = 0
# ReadHeader
header = SerializedFileHeader(reader)
self.header = header
if header.version >= 9:
header.endian = ">" if reader.read_boolean() else "<"
header.reserved = reader.read_bytes(3)
if header.version >= 22:
header.metadata_size = reader.read_u_int()
header.file_size = reader.read_long()
header.data_offset = reader.read_long()
self.unknown = reader.read_long() # unknown
else:
reader.Position = header.file_size - header.metadata_size
header.endian = ">" if reader.read_boolean() else "<"
reader.endian = header.endian
if header.version >= 7:
unity_version = reader.read_string_to_null()
self.set_version(unity_version)
if header.version >= 8:
self._m_target_platform = reader.read_int()
self.target_platform = BuildTarget(self._m_target_platform)
if header.version >= 13:
self._enable_type_tree = reader.read_boolean()
# ReadTypes
type_count = reader.read_int()
self.types = [SerializedType(reader, self, False) for _ in range(type_count)]
self.big_id_enabled = 0
if 7 <= header.version < 14:
self.big_id_enabled = reader.read_int()
# ReadObjects
object_count = reader.read_int()
self.objects = {}
for _ in range(object_count):
obj = ObjectReader.ObjectReader(self, reader)
self.objects[obj.path_id] = obj
# Read Scripts
if header.version >= 11:
script_count = reader.read_int()
self.script_types = [
LocalSerializedObjectIdentifier(header, reader)
for _ in range(script_count)
]
# Read Externals
externals_count = reader.read_int()
self.externals = [
FileIdentifier(header, reader) for _ in range(externals_count)
]
if header.version >= 20:
ref_type_count = reader.read_int()
self.ref_types = [
SerializedType(reader, self, True) for _ in range(ref_type_count)
]
if config.SERIALIZED_FILE_PARSE_TYPETREE is False:
self._enable_type_tree = False
if header.version >= 5:
self.userInformation = reader.read_string_to_null()
# read the asset_bundles to get the containers
for obj in self.objects.values():
if obj.type == ClassIDType.AssetBundle:
self.assetbundle = obj.read()
self._container = ContainerHelper(self.assetbundle)
break
else:
self.assetbundle = None
self._container = ContainerHelper()
@property
def container(self):
return self._container
def load_dependencies(self, possible_dependencies: list = []):
"""Load all external dependencies.
Parameters
----------
possible_dependencies : list
List of possible dependencies for cases
where the target file is not listed as external.
"""
for file_id in self.externals:
self.environment.load_file(file_id.path, True)
for dependency in possible_dependencies:
try:
self.environment.load_file(dependency, True)
except FileNotFoundError:
pass
def set_version(self, string_version: str):
self.unity_version = string_version
if not string_version or string_version == "0.0.0":
# weird case, but apparently can happen?
# check "cant read Texture2D by 2020.3.13 f1 AssetBundle #77" for details
if isinstance(self.parent, BundleFile.BundleFile):
string_version = self.parent.version_engine
if not string_version or string_version == "0.0.0":
string_version = config.get_fallback_version()
build_type = re.findall(r"([^\d.])", string_version)
self.build_type = BuildType(build_type[0] if build_type else "")
version_split = re.split(r"\D", string_version)
self.version = tuple(int(x) for x in version_split[:4])
def get_writeable_cab(self, name: str = "CAB-UnityPy_Mod.resS"):
"""
Creates a new cab file in the bundle that contains the given data.
This is usefull for asset types that use resource files.
"""
if not isinstance(
self.parent, (File.BundleFile.BundleFile, File.WebFile.WebFile)
):
return None
cab = self.parent.get_writeable_cab(name)
cab.path = f"archive:/{self.name}/{name}"
if not any(cab.path == x.path for x in self.externals):
# register as external
class FileIdentifierFake:
pass
file_identifier = FileIdentifierFake()
file_identifier.__class__ = FileIdentifier
file_identifier.temp_empty = ""
import uuid
file_identifier.guid = uuid.uuid1().urn[-16:].encode("ascii")
file_identifier.path = cab.path
file_identifier.type = 0
self.externals.append(file_identifier)
return cab
def save(self, packer: Optional[str] = None) -> bytes:
# 1. header -> has to be delayed until the very end
# 2. data -> types, objects, scripts, ...
# so write the data first
header = self.header
meta_writer = EndianBinaryWriter(endian=header.endian)
data_writer = EndianBinaryWriter(endian=header.endian)
if header.version >= 7:
meta_writer.write_string_to_null(self.unity_version)
if header.version >= 8:
meta_writer.write_int(self._m_target_platform)
if header.version >= 13:
meta_writer.write_boolean(self._enable_type_tree)
# ReadTypes
meta_writer.write_int(len(self.types))
for typ in self.types:
typ.write(self, meta_writer, False)
if 7 <= header.version < 14:
meta_writer.write_int(self.big_id_enabled)
# ReadObjects
meta_writer.write_int(len(self.objects))
for obj in self.objects.values():
obj.write(header, meta_writer, data_writer)
data_writer.align_stream(8)
# Read Scripts
if header.version >= 11:
meta_writer.write_int(len(self.script_types))
for script_type in self.script_types:
script_type.write(header, meta_writer)
# Read Externals
meta_writer.write_int(len(self.externals))
for external in self.externals:
external.write(header, meta_writer)
if header.version >= 20:
assert self.ref_types is not None
meta_writer.write_int(len(self.ref_types))
for ref_type in self.ref_types:
ref_type.write(self, meta_writer, True)
if header.version >= 5:
assert self.userInformation is not None
meta_writer.write_string_to_null(self.userInformation)
# prepare header
writer = EndianBinaryWriter()
header_size = 16 # 4*4
metadata_size = meta_writer.Length
data_size = data_writer.Length
if header.version >= 9:
# 1 bool + 3 reserved + extra header 4 + 3*8
header_size += 4 if header.version < 22 else 4 + 28
data_offset = header_size + metadata_size
# align data_offset
data_offset += (16 - data_offset % 16) % 16
file_size = data_offset + data_size
if header.version < 22:
writer.write_u_int(metadata_size)
writer.write_u_int(file_size)
writer.write_u_int(header.version)
# reader.Position = header.file_size - header.metadata_size
# so data follows right after this header -> after 32
writer.write_u_int(data_offset)
writer.write_boolean(">" == header.endian)
writer.write_bytes(header.reserved)
else:
# old header
writer.write_u_int(0)
writer.write_u_int(0)
writer.write_u_int(header.version)
writer.write_u_int(0)
writer.write_boolean(">" == header.endian)
writer.write_bytes(header.reserved)
writer.write_u_int(metadata_size)
writer.write_long(file_size)
writer.write_long(data_offset)
writer.write_long(self.unknown)
writer.write_bytes(meta_writer.bytes)
writer.align_stream(16)
writer.write_bytes(data_writer.bytes)
else:
metadata_size += 1 # endian boolean
file_size = header_size + metadata_size + data_size
writer.write_u_int(metadata_size)
writer.write_u_int(file_size)
writer.write_u_int(header.version)
# reader.Position = header.file_size - header.metadata_size
# so data follows right after this header -> after 32
writer.write_u_int(32)
writer.write_bytes(data_writer.bytes)
writer.write_boolean(">" == header.endian)
writer.write_bytes(meta_writer.bytes)
return writer.bytes
def read_string(string_buffer_reader: EndianBinaryReader, value: int) -> str:
is_offset = (value & 0x80000000) == 0
if is_offset:
string_buffer_reader.Position = value
return string_buffer_reader.read_string_to_null()
offset = value & 0x7FFFFFFF
return CommonString.get(offset, str(offset))
@define(slots=True)
class ContainerHelper:
"""Helper class to allow multidict containers
without breaking compatibility with old versions"""
container: List[Tuple[str, AssetInfo]]
container_dict: Dict[str, PPtr[Object]]
path_dict: Dict[int, str]
def __init__(self, assetbundle: Optional[AssetBundle] = None) -> None:
if assetbundle is None:
self.container = []
else:
self.container = assetbundle.m_Container
# support for getitem
self.container_dict = {key: value.asset for key, value in self.container}
self.path_dict = {value.asset.m_PathID: key for key, value in self.container}
def items(self) -> Generator[Tuple[str, PPtr[Object]], None, None]:
return ((key, value.asset) for key, value in self.container)
def keys(self) -> list[str]:
return list({key for key, value in self.container})
def values(self) -> list[PPtr[Object]]:
return list({value.asset for key, value in self.container})
def __getitem__(self, key) -> PPtr[Object]:
return self.container_dict[key]
def __setitem__(self, key, value) -> None:
raise NotImplementedError("Assigning to container is not allowed!")
def __delitem__(self, key) -> None:
raise NotImplementedError("Deleting from the container is not allowed!")
def __iter__(self) -> Iterator[str]:
return iter(self.keys())
def __len__(self) -> int:
return len(self.container)
def __getattr__(self, name: str) -> PPtr[Object]:
return self.container_dict[name]
def __str__(self) -> str:
return f'{{{", ".join(f"{key}: {value}" for key, value in self.items())}}}'
def __dict__(self) -> Dict[str, PPtr[Object]]:
return self.container_dict
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