mirror of
https://github.com/Virtual-World-RE/NeoGF.git
synced 2024-11-15 02:05:34 +01:00
831 lines
45 KiB
Python
831 lines
45 KiB
Python
#!/usr/bin/env python3
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from configparser import ConfigParser
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from datetime import datetime
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import logging
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from math import ceil
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import os
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from pathlib import Path
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import re
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import time
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__version__ = "0.2.0"
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__author__ = "rigodron, algoflash, GGLinnk"
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__license__ = "MIT"
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__status__ = "developpement"
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# Creating afstool.py was a challenge because there is many implementations
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# and configurations possible. In one hand allowing to configure the rebuild
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# was usefull but in another it was also important to control errors generated
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# by those conf files. Using custom exceptions was necessary.
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# Not tested by afstest.py:
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class AfsInvalidFileLenError(Exception): pass
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class AfsEmptyAfsError(Exception): pass
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class AfsInvalidFilenameDirectoryLengthError(Exception): pass
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class AfsInvalidAfsFolderError(Exception): pass
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# Tested by afstest.py:
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class AfsInvalidMagicNumberError(Exception): pass
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class AfsInvalidFilesRebuildStrategy(Exception): pass
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class AfsFilenameDirectoryValueError(Exception): pass
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class AfsInvalidFilePathError(Exception): pass
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class AfsInvalidFieldsCountError(Exception): pass
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class AfsIndexValueError(Exception): pass
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class AfsIndexOverflowError(Exception): pass
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class AfsIndexCollisionError(Exception): pass
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class AfsOffsetValueError(Exception): pass
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class AfsOffsetAlignError(Exception): pass
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class AfsOffsetCollisionError(Exception): pass
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class AfsFdOffsetOffsetValueError(Exception): pass
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class AfsFdOffsetValueError(Exception): pass
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class AfsFdLastAttributeTypeValueError(Exception): pass
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class AfsFdOffsetCollisionError(Exception): pass
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class AfsEmptyBlockValueError(Exception): pass
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class AfsEmptyBlockAlignError(Exception): pass
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def normalize_parent(path_str:str):
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"Normalize the parent of a path to avoid out of extract folder access."
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if Path(path_str).parent == Path("."): return path_str
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parent_str = str(Path(path_str).parent).replace(".", "")
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while parent_str[0] == "/" or parent_str[0] == "\\":
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parent_str = parent_str[1:]
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return parent_str + "/" + Path(path_str).name
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class FilenameResolver:
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"""
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Constructor: system path of the unpack folder
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DESCRIPTION
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Use sys/filename_resolver.csv to resolve filename to their index
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in the TOC. Allow also to rename files since the FD and the TOC
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are not rebuild during pack.
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The resolver is necessary in multiple cases:
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* When multiple packed files have the same name in the FD
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* When there is no FD
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* When names contains invalid path operator (not implemented yet)
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"""
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__sys_path = None
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# names_dict: {unpacked_filename: toc_index, ... }
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__names_dict = None
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__resolve_buffer = ""
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__separator = '?'
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def __init__(self, sys_path:Path):
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self.__sys_path = sys_path
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self.__names_dict = {}
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self.__load()
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def __load(self):
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"Load names_dict if there is a csv"
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if (self.__sys_path / "filename_resolver.csv").is_file():
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self.__resolve_buffer = (self.__sys_path / "filename_resolver.csv").read_text()
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for line in self.__resolve_buffer.split('\n'):
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name_tuple = line.split(self.__separator)
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self.__names_dict[name_tuple[1]] = int(name_tuple[0])
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def save(self):
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"Save the resolve_buffer containing formated names_dict to the csv if not empty"
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if len(self.__resolve_buffer) > 0:
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logging.info(f"Writting {Path('sys/filename_resolver.csv')}")
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(self.__sys_path / "filename_resolver.csv").write_text(self.__resolve_buffer[:-1])
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def resolve_new(self, file_index:int, filename:str):
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"""
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Resolve generate a unique filename when unpacking
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input: file_index = int
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input: filename = string
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return the filename or new generated filename if duplicated
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"""
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normalized_str = normalize_parent(filename)
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if filename != normalized_str:
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filename = normalized_str
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if filename not in self.__names_dict:
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self.__names_dict[filename] = file_index
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self.__resolve_buffer += f"{file_index}{self.__separator}{filename}\n"
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return filename
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if filename in self.__names_dict:
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i = 1
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new_filename = f"{Path(filename).parent / Path(filename).stem} ({i}){Path(filename).suffix}"
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while new_filename in self.__names_dict:
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i+=1
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new_filename = f"{Path(filename).parent / Path(filename).stem} ({i}){Path(filename).suffix}"
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self.__names_dict[new_filename] = file_index
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self.__resolve_buffer += f"{file_index}{self.__separator}{new_filename}\n"
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return new_filename
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self.__names_dict[filename] = file_index
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return filename
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def add(self, file_index:int, unpacked_filename:str):
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"Add new entry forcing the unpacked_filename"
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self.__names_dict[unpacked_filename] = file_index
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self.__resolve_buffer += f"{file_index}{self.__separator}{unpacked_filename}\n"
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def resolve_from_index(self, file_index:int, filename:str):
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"""
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input: file_index = int
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input: filename = str
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return previously generated filename using the index of the file in the TOC
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else return filename
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"""
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for filename_key, fileindex_value in self.__names_dict.items():
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if fileindex_value == file_index:
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return filename_key
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return filename
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class Afs:
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"""
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DESCRIPTION Afs handle all operations needed by the command parser
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http://wiki.xentax.com/index.php/GRAF:AFS_AFS
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"""
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MAGIC_00 = b"AFS\x00"
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MAGIC_20 = b"AFS\x20"
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# The header and each files are aligned to 0x800
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ALIGN = 0x800
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# magic number and number of files
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HEADER_LEN = 8
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# Each entry in the FD have 32 chars for filename and the rest for date and last_fd_attribute
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FILENAMEDIRECTORY_ENTRY_LEN = 0x30
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__file_count = None
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# this offset is at the end of the TOC and sometimes there is pad
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__filenamedirectory_offset_offset = None
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# if there is a FD at the end of the AFS
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__filenamedirectory_offset = None
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__filenamedirectory_len = None
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__filenamedirectory = None
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__tableofcontent = None
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def __get_magic(self):
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return bytes(self.__tableofcontent[0:4])
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def __get_file_count(self):
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return int.from_bytes(self.__tableofcontent[4:8], "little")
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def __get_filenamedirectory_offset(self):
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return int.from_bytes(self.__tableofcontent[self.__filenamedirectory_offset_offset:self.__filenamedirectory_offset_offset+4], "little")
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def __get_filenamedirectory_len(self):
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return int.from_bytes(self.__tableofcontent[self.__filenamedirectory_offset_offset+4:self.__filenamedirectory_offset_offset+8], "little")
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def __get_file_offset(self, fileindex:int):
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return int.from_bytes(self.__tableofcontent[Afs.HEADER_LEN+fileindex*8:Afs.HEADER_LEN+fileindex*8+4], "little")
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def __get_file_len(self, fileindex:int):
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return int.from_bytes(self.__tableofcontent[Afs.HEADER_LEN+fileindex*8+4:Afs.HEADER_LEN+fileindex*8+8], "little")
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def __get_file_name(self, fileindex:int):
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return self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+32].split(b"\x00")[0].decode("utf-8")
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def __get_file_fdlast(self, fileindex:int):
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return int.from_bytes(self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+44:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+48], "little")
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def __get_file_mtime(self, fileindex:int):
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mtime_data = self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+32:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+44]
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year = int.from_bytes(mtime_data[0:2], "little")
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month = int.from_bytes(mtime_data[2:4], "little")
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day = int.from_bytes(mtime_data[4:6], "little")
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hour = int.from_bytes(mtime_data[6:8], "little")
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minute = int.from_bytes(mtime_data[8:10], "little")
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second = int.from_bytes(mtime_data[10:12], "little")
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return time.mktime(datetime(year=year, month=month, day=day, hour=hour, minute=minute, second=second).timetuple())
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def __patch_file_len(self, fileindex:int, file_len:int): # Patch file_len in the TOC
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self.__tableofcontent[Afs.HEADER_LEN+fileindex*8+4:Afs.HEADER_LEN+fileindex*8+8] = file_len.to_bytes(4, "little")
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def __patch_file_mtime(self, fileindex:int, mtime):
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mtime = datetime.fromtimestamp(mtime)
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self.__filenamedirectory[Afs.FILENAMEDIRECTORY_ENTRY_LEN*fileindex+32:Afs.FILENAMEDIRECTORY_ENTRY_LEN*fileindex+44] = \
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mtime.year.to_bytes(2,"little")+ \
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mtime.month.to_bytes(2,"little")+ \
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mtime.day.to_bytes(2,"little")+ \
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mtime.hour.to_bytes(2,"little")+ \
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mtime.minute.to_bytes(2,"little")+\
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mtime.second.to_bytes(2,"little")
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def __patch_fdlasts(self, fileindex:int, fd_last_attribute_type):
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"Patch FD last attributes according to the type"
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if type(fd_last_attribute_type) == int: # every entry has the same const value
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self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+44:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+48] = fd_last_attribute_type.to_bytes(4, "little")
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elif fd_last_attribute_type == "length": #
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self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+44:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+48] = self.__get_file_len(fileindex).to_bytes(4, "little")
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elif fd_last_attribute_type == "offset-length":
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# every odd index is changed according to the TOC lengths values with the serie: 0->updated_index=1 1->updated_index=3 2->updated_index=5
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# updated_index = index*2+1 with index*2+1 < self.__file_count
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updated_fdlast_index = fileindex*2+1
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if updated_fdlast_index < self.__file_count:
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self.__filenamedirectory[updated_fdlast_index*Afs.FILENAMEDIRECTORY_ENTRY_LEN+44:updated_fdlast_index*Afs.FILENAMEDIRECTORY_ENTRY_LEN+48] = self.__get_file_len(fileindex).to_bytes(4, "little")
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# fd_last_attribute_type == unknown
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def __pad(self, data:bytes):
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"Add padding to align datas to next block"
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if len(data) % Afs.ALIGN != 0:
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data += b"\x00" * (Afs.ALIGN - (len(data) % Afs.ALIGN))
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return data
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def __clean_filenamedirectory(self):
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"""
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We can't know if there is a FD without searching and loading data for it
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So we have to clean loaded data if values are invalid
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"""
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self.__filenamedirectory = None
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self.__filenamedirectory_offset = None
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self.__filenamedirectory_len = None
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def __loadsys_from_afs(self, afs_file, afs_len:int):
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"""
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Load the TOC and the FD from an AFS file
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this operation is difficult because there are many cases possible:
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is there or not a FD?
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is there padding at the end of files offset/length list in the TOC?
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So we have to search and control values and test it for errors
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If there is no FD self.__filename_directory is None
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return True if there is a FD else None
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"""
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self.__tableofcontent = afs_file.read(Afs.HEADER_LEN)
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if self.__get_magic() not in [Afs.MAGIC_00, Afs.MAGIC_20]:
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raise AfsInvalidMagicNumberError("Error - Invalid AFS magic number.")
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self.__file_count = self.__get_file_count()
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self.__tableofcontent += afs_file.read(self.__file_count*8)
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tableofcontent_len = len(self.__tableofcontent)
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offset = tableofcontent_len
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# Now we have read the TOC and seeked to the end of it
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# next values could be FD offset and length if there is one
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# So we read 4 bytes to test if there is padding or not
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tmp_block = int.from_bytes(afs_file.read(4), "little")
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if tmp_block != 0:
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self.__filenamedirectory_offset_offset = offset
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self.__filenamedirectory_offset = tmp_block
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# Here it could be padding
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# If filenamedirectory_offset is not directly after the files offsets and lens
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# --> we search the next uint32 != 0
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else:
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offset += 4
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# We read by 0x800 blocks for better performances
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block_len = 0x800
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tmp_block = afs_file.read(block_len)
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while tmp_block:
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match = re.search(b"^(?:\x00{4})*(?!\x00{4})(.{4})", tmp_block) # match next uint32
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if match:
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self.__filenamedirectory_offset_offset = offset + match.start(1)
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self.__filenamedirectory_offset = int.from_bytes(match[1], "little")
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break
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offset += block_len
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tmp_block = afs_file.read(block_len)
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# This because we retrieve an int valid or not into fd offset
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if self.__filenamedirectory_offset is None:
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raise AfsEmptyAfsError("Error - Empty AFS.")
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afs_file.seek(self.__filenamedirectory_offset_offset+4)
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self.__filenamedirectory_len = int.from_bytes(afs_file.read(4), "little")
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# Test if offset of filenamedirectory is valid and if number of entries match between filenamedirectory and tableofcontent
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if self.__filenamedirectory_offset + self.__filenamedirectory_len > afs_len or \
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self.__filenamedirectory_offset < self.__filenamedirectory_offset_offset or \
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(tableofcontent_len - self.HEADER_LEN) / 8 != self.__filenamedirectory_len / Afs.FILENAMEDIRECTORY_ENTRY_LEN:
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self.__clean_filenamedirectory()
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return False
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afs_file.seek(self.__filenamedirectory_offset)
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self.__filenamedirectory = afs_file.read(self.__filenamedirectory_len)
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# Test if filename is correct by very basic pattern matching
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pattern = re.compile(b"^(?=.{32}$)[^\x00]+\x00+$")
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for i in range(self.__file_count):
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if not pattern.fullmatch(self.__filenamedirectory[i*Afs.FILENAMEDIRECTORY_ENTRY_LEN:i*Afs.FILENAMEDIRECTORY_ENTRY_LEN+32]):
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self.__clean_filenamedirectory()
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return False
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afs_file.seek(tableofcontent_len)
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# Here FD is valid and we read it's length
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self.__tableofcontent += afs_file.read(self.__filenamedirectory_offset_offset+8 - tableofcontent_len)
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return True
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def __loadsys_from_folder(self, sys_path:Path):
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"Load the TOC and FD from an unpacked afs. This time it's easier"
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self.__tableofcontent = bytearray( (sys_path / "tableofcontent.bin").read_bytes() )
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self.__file_count = self.__get_file_count()
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# If there is a filenamedirectory we load it
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if (sys_path / "filenamedirectory.bin").is_file():
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self.__filenamedirectory = bytearray((sys_path / "filenamedirectory.bin").read_bytes())
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self.__filenamedirectory_offset_offset = len(self.__tableofcontent) - 8
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self.__filenamedirectory_offset = self.__get_filenamedirectory_offset()
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self.__filenamedirectory_len = self.__get_filenamedirectory_len()
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if self.__filenamedirectory_len != len(self.__filenamedirectory):
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raise AfsInvalidFilenameDirectoryLengthError("Error - Tableofcontent filenamedirectory length does not match real filenamedirectory length.")
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def __print(self, title:str, lines_tuples, columns:list = list(range(7)), infos:str = ""):
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"Print is used for stats"
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stats_buffer = "#"*100+f"\n# {title}\n"+"#"*100+f"\n{infos}|"+"-"*99+"\n"
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if 0 in columns: stats_buffer += "| Index ";
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if 1 in columns: stats_buffer += "| b offset ";
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if 2 in columns: stats_buffer += "| e offset ";
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if 3 in columns: stats_buffer += "| length ";
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if 4 in columns: stats_buffer += "| YYYY-mm-dd HH:MM:SS ";
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if 5 in columns: stats_buffer += "| FD last ";
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if 6 in columns: stats_buffer += "| Filename";
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stats_buffer += "\n|"+"-"*99+"\n"
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for line in lines_tuples:
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stats_buffer += line if type(line) == str else "| "+" | ".join(line)+"\n"
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print(stats_buffer, end='')
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def __get_offsets_map(self):
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"""
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This method is used to check the next file offset and control if there is overlapping during pack
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end offset not included (0,1) -> len=1
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return a list of offsets where files and sys files begin
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"""
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# offsets_map is used to check next used offset when updating files
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# we also check if there is intersect between files
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offsets_map = [(0, len(self.__tableofcontent))]
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for i in range(self.__file_count):
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file_offset = self.__get_file_offset(i)
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offsets_map.append( (file_offset, file_offset + self.__get_file_len(i)) )
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if self.__filenamedirectory:
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filenamedirectory_offset = self.__get_filenamedirectory_offset()
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offsets_map.append( (filenamedirectory_offset, filenamedirectory_offset + self.__get_filenamedirectory_len()) )
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offsets_map.sort(key=lambda x: x[0])
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# Check if there is problems in file memory mapping
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last_tuple = (-1, -1)
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for i, offsets_tuple in enumerate(offsets_map):
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if offsets_tuple[0] < last_tuple[1]:
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raise AfsOffsetCollisionError(f"Error - Multiple files use same file offsets ranges.")
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last_tuple = offsets_tuple
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offsets_map[i] = offsets_tuple[0]
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return offsets_map
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def __get_formated_map(self):
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"""
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This method is used for stats command
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end offset not included (0,1) -> len=1
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"""
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files_map = [("SYS TOC ", "00000000", f"{len(self.__tableofcontent):08x}", f"{len(self.__tableofcontent):08x}", "SYS TOC"+' '*12, "SYS TOC ", "SYS TOC")]
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for i in range(self.__file_count):
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file_offset = self.__get_file_offset(i)
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file_len = self.__get_file_len(i)
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file_date = datetime.fromtimestamp(self.__get_file_mtime(i)).strftime("%Y-%m-%d %H:%M:%S") if self.__filenamedirectory else " "*19
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filename = self.__get_file_name(i) if self.__filenamedirectory else f"{i:08}"
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fdlast = f"{self.__get_file_fdlast(i):08x}" if self.__filenamedirectory else " "*8
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files_map.append((f"{i:08x}", f"{file_offset:08x}", f"{file_offset + file_len:08x}", f"{file_len:08x}", file_date, fdlast, filename))
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if self.__filenamedirectory:
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files_map.append(("SYS FD ", f"{self.__filenamedirectory_offset:08x}", \
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f"{self.__filenamedirectory_offset + len(self.__filenamedirectory):08x}", \
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f"{len(self.__filenamedirectory):08x}", "SYS FD"+' '*13, "SYS FD ", "SYS FD"))
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return files_map
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def __get_fdlast_type(self):
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"""
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At the end of the FD there is 4 bytes used for different purposes
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To keep data we search what kind of data it is:
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return one of this values:
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* length
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* offset-length
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* 0x123 # (hex constant)
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* unknwon
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"""
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# Try to get the type of FD last attribute
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length_type = True
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offset_length_type = True
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constant_type = self.__get_file_fdlast(0)
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for i in range(self.__file_count):
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fd_last_attribute = self.__get_file_fdlast(i)
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if fd_last_attribute != self.__get_file_len(i):
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length_type = None
|
|
if fd_last_attribute != self.__tableofcontent[8+i*4:8+i*4+4]:
|
|
offset_length_type = None
|
|
if fd_last_attribute != constant_type:
|
|
constant_type = None
|
|
if length_type: return "length"
|
|
if offset_length_type: return "offset-length"
|
|
if constant_type: return f"0x{constant_type:x}"
|
|
logging.info("Unknown FD last attribute type.")
|
|
return "unknown"
|
|
def __write_rebuild_config(self, sys_path:Path, resolver:FilenameResolver):
|
|
"""
|
|
At the end of unpack we use this function to write the 2 files:
|
|
* "sys/afs_rebuild.conf"
|
|
* "sys/afs_rebuild.csv"
|
|
this file will contains every parameters of the AFS to allow exact pack copy when possible (fd_last_atribute != unknown)
|
|
see documentation for further informations
|
|
"""
|
|
config = ConfigParser(allow_no_value=True) # allow_no_value to allow adding comments
|
|
config.optionxform = str # makes options case sensitive
|
|
config.add_section("Default")
|
|
config.set("Default", "# Documentation available here: https://github.com/Virtual-World-RE/NeoGF/tree/main/afstool#afs_rebuildconf")
|
|
config.set("Default", "AFS_MAGIC", f"0x{self.__get_magic().hex()}")
|
|
config.set("Default", "files_rebuild_strategy", "mixed")
|
|
config.set("Default", "filename_directory", "True" if self.__filenamedirectory else "False")
|
|
if self.__filenamedirectory:
|
|
config.add_section("FilenameDirectory")
|
|
config.set("FilenameDirectory", "toc_offset_of_fd_offset", f"0x{self.__filenamedirectory_offset_offset:x}")
|
|
config.set("FilenameDirectory", "fd_offset", f"0x{self.__filenamedirectory_offset:x}")
|
|
config.set("FilenameDirectory", "fd_last_attribute_type", self.__get_fdlast_type())
|
|
config.write((sys_path / "afs_rebuild.conf").open("w"))
|
|
|
|
rebuild_csv = ""
|
|
# generate and save afs_rebuild.csv
|
|
for i in range(self.__file_count):
|
|
filename = self.__get_file_name(i) if self.__filenamedirectory else f"{i:08}"
|
|
unpacked_filename = resolver.resolve_from_index(i, filename) if self.__filenamedirectory else f"{i:08}"
|
|
rebuild_csv += f"{unpacked_filename}?0x{i:x}?0x{self.__get_file_offset(i):x}?{filename}\n"
|
|
if len(rebuild_csv) > 0:
|
|
(sys_path / "afs_rebuild.csv").write_text(rebuild_csv[:-1])
|
|
def unpack(self, afs_path:Path, folder_path:Path):
|
|
"Method used to unpack an AFS inside a folder"
|
|
sys_path = folder_path / "sys"
|
|
root_path = folder_path / "root"
|
|
sys_path.mkdir(parents=True)
|
|
root_path.mkdir()
|
|
|
|
resolver = None
|
|
with afs_path.open("rb") as afs_file:
|
|
if not self.__loadsys_from_afs(afs_file, afs_path.stat().st_size):
|
|
logging.info("There is no filename directory. Creating new names and dates for files.")
|
|
else:
|
|
logging.debug(f"filenamedirectory_offset:0x{self.__filenamedirectory_offset:x}, filenamedirectory_len:0x{self.__filenamedirectory_len:x}.")
|
|
logging.info("Writting sys/filenamedirectory.bin")
|
|
(sys_path / "filenamedirectory.bin").write_bytes(self.__filenamedirectory)
|
|
resolver = FilenameResolver(sys_path)
|
|
|
|
logging.info("Writting sys/tableofcontent.bin")
|
|
(sys_path / "tableofcontent.bin").write_bytes(self.__tableofcontent)
|
|
|
|
logging.info(f"Extracting {self.__file_count} files.")
|
|
for i in range(self.__file_count):
|
|
file_offset = self.__get_file_offset(i)
|
|
file_len = self.__get_file_len(i)
|
|
filename = resolver.resolve_new(i, self.__get_file_name(i)) if self.__filenamedirectory else f"{i:08}"
|
|
|
|
if Path(filename).parent != Path("."):
|
|
(root_path / Path(filename).parent).mkdir(parents=True, exist_ok=True)
|
|
|
|
logging.debug(f"Writting {root_path / filename} 0x{file_offset:x}:0x{file_offset + file_len:x}")
|
|
afs_file.seek(file_offset)
|
|
(root_path / filename).write_bytes(afs_file.read(file_len))
|
|
|
|
if self.__filenamedirectory:
|
|
mtime = self.__get_file_mtime(i)
|
|
os.utime(root_path / filename, (mtime, mtime))
|
|
|
|
if self.__filenamedirectory:
|
|
resolver.save()
|
|
self.__write_rebuild_config(sys_path, resolver)
|
|
def pack(self, folder_path:Path, afs_path:Path = None):
|
|
"""
|
|
Methood used to pack un unpacked folder inside a new AFS file
|
|
for a file pack will use the next file offset as max file length an raise an exception if the length overflow
|
|
pack keep FD and TOC inchanged except for file length, FD dates, fd_last_attribute updates
|
|
"""
|
|
if afs_path is None:
|
|
afs_path = folder_path / Path(folder_path.name).with_suffix(".afs")
|
|
elif afs_path.suffix != ".afs":
|
|
logging.warning("Dest file should have .afs file extension.")
|
|
|
|
sys_path = folder_path / "sys"
|
|
root_path = folder_path / "root"
|
|
|
|
self.__loadsys_from_folder(sys_path)
|
|
resolver = FilenameResolver(sys_path)
|
|
offsets_map = self.__get_offsets_map()
|
|
|
|
if self.__filenamedirectory:
|
|
fd_last_attribute_type = self.__get_fdlast_type()
|
|
if fd_last_attribute_type[:2] == "0x":
|
|
fd_last_attribute_type = int(fd_last_attribute_type, 16)
|
|
|
|
try:
|
|
with afs_path.open("wb") as afs_file:
|
|
# We update files
|
|
for i in range(self.__file_count):
|
|
file_offset = self.__get_file_offset(i)
|
|
file_len = self.__get_file_len(i)
|
|
filename = resolver.resolve_from_index(i, self.__get_file_name(i) if self.__filenamedirectory else f"{i:08}")
|
|
|
|
file_path = root_path / filename
|
|
new_file_len = file_path.stat().st_size
|
|
|
|
if new_file_len != file_len:
|
|
# If no FD, we can raise AFS length without constraint
|
|
if offsets_map.index(file_offset) + 1 < len(offsets_map):
|
|
next_offset = offsets_map[offsets_map.index(file_offset)+1]
|
|
if file_offset + new_file_len > next_offset:
|
|
raise AfsInvalidFileLenError(f"File {file_path} as a new file_len giving an end offset (0x{file_offset + new_file_len:x}) > next file offset (0x{next_offset:x}). "\
|
|
"This means that we have to rebuild the AFS using -r and changing offset of all next files and this could lead to bugs if the main dol use AFS relative file offsets.")
|
|
self.__patch_file_len(i, new_file_len)
|
|
if self.__filenamedirectory:
|
|
self.__patch_fdlasts(i, fd_last_attribute_type)
|
|
# If there is a filenamedirectory we update mtime:
|
|
if self.__filenamedirectory:
|
|
self.__patch_file_mtime(i, round(file_path.stat().st_mtime))
|
|
logging.debug(f"Packing {file_path} 0x{file_offset:x}:0x{file_offset+new_file_len:x} in AFS.")
|
|
afs_file.seek(file_offset)
|
|
afs_file.write(self.__pad(file_path.read_bytes()))
|
|
if self.__filenamedirectory:
|
|
afs_file.seek(self.__filenamedirectory_offset)
|
|
afs_file.write(self.__pad(self.__filenamedirectory))
|
|
logging.debug(f"Packing {sys_path / 'tableofcontent.bin'} at the beginning of the AFS.")
|
|
afs_file.seek(0)
|
|
afs_file.write(self.__tableofcontent)
|
|
except AfsInvalidFileLenError:
|
|
afs_path.unlink()
|
|
raise
|
|
def rebuild(self, folder_path:Path):
|
|
"""
|
|
Rebuild will use following config files:
|
|
* "sys/afs_rebuild.conf"
|
|
* "sys/afs_rebuild.csv"
|
|
It will rebuild the unpacked AFS sys files (TOC and FD) in the sys folder
|
|
"""
|
|
config = ConfigParser()
|
|
root_path = folder_path / "root"
|
|
sys_path = folder_path / "sys"
|
|
config.read(sys_path / "afs_rebuild.conf")
|
|
if config["Default"]["AFS_MAGIC"] not in ["0x41465300", "0x41465320"]:
|
|
raise AfsInvalidMagicNumberError("Error - Invalid [Default] AFS_MAGIC: must be 0x41465300 or 0x41465320.")
|
|
if config["Default"]["files_rebuild_strategy"] not in ["index", "offset", "mixed", "auto"]:
|
|
raise AfsInvalidFilesRebuildStrategy("Error - Invalid [Default] files_rebuild_strategy: must be index, offset, mixed or auto.")
|
|
if config["Default"]["filename_directory"] not in ["True", "False"]:
|
|
raise AfsFilenameDirectoryValueError("Error - Invalid [Default] filename_directory: must be True or False.")
|
|
|
|
for path in [sys_path / "tableofcontent.bin", sys_path / "filenamedirectory.bin", sys_path / "filename_resolver.csv"]:
|
|
if path.is_file():
|
|
logging.info(f"Removing {path}.")
|
|
path.unlink()
|
|
|
|
files_paths = [path for path in root_path.glob("**/*") if path.is_file()]
|
|
self.__file_count = len(files_paths)
|
|
max_offset = None
|
|
|
|
if config["Default"]["filename_directory"] == "True":
|
|
if config["FilenameDirectory"]["toc_offset_of_fd_offset"] != "auto":
|
|
if config["FilenameDirectory"]["toc_offset_of_fd_offset"][:2] != "0x" or len(config["FilenameDirectory"]["toc_offset_of_fd_offset"]) < 3:
|
|
raise AfsFdOffsetOffsetValueError("Error - Invalid [FilenameDirectory] toc_offset_of_fd_offset: must use hex format 0xabcdef or auto.")
|
|
self.__filenamedirectory_offset_offset = int(config["FilenameDirectory"]["toc_offset_of_fd_offset"][2:], 16)
|
|
else:
|
|
self.__filenamedirectory_offset_offset = self.__file_count*8 + 8
|
|
max_offset = int(ceil((self.__filenamedirectory_offset_offset + 8) / Afs.ALIGN)) * Afs.ALIGN # TOC length
|
|
self.__filenamedirectory_len = self.__file_count * Afs.FILENAMEDIRECTORY_ENTRY_LEN
|
|
|
|
if config["FilenameDirectory"]["fd_offset"] != "auto":
|
|
if config["FilenameDirectory"]["fd_offset"][:2] != "0x" or len(config["FilenameDirectory"]["fd_offset"]) < 3:
|
|
raise AfsFdOffsetValueError("Error - Invalid [FilenameDirectory] fd_offset: must use hex format 0xabcdef or auto.")
|
|
self.__filenamedirectory_offset = int(config["FilenameDirectory"]["fd_offset"][2:], 16)
|
|
|
|
if config["FilenameDirectory"]["fd_last_attribute_type"] not in ["length", "offset-length", "unknown"]:
|
|
if config["FilenameDirectory"]["fd_last_attribute_type"][0:2] != "0x" or len(config["FilenameDirectory"]["fd_last_attribute_type"]) < 3:
|
|
raise AfsFdLastAttributeTypeValueError("Error - Invalid [FilenameDirectory] fd_last_attribute_type: must be length, offset-length, 0xabcdef offset or unknown.")
|
|
else:
|
|
max_offset = int(ceil((self.__file_count*8 + 8) / Afs.ALIGN)) * Afs.ALIGN # TOC length
|
|
|
|
self.__tableofcontent = bytearray.fromhex( config["Default"]["AFS_MAGIC"][2:] ) + self.__file_count.to_bytes(4, "little")
|
|
files_rebuild_strategy = config["Default"]["files_rebuild_strategy"]
|
|
|
|
csv_files_lists = []
|
|
reserved_indexes = []
|
|
empty_blocks_list = []
|
|
|
|
# We parse the file csv and verify entries retrieving length for files
|
|
if (sys_path / "afs_rebuild.csv").is_file():
|
|
for line in (sys_path / "afs_rebuild.csv").read_text().split('\n'):
|
|
line_splited = line.split('?')
|
|
if len(line_splited) == 4:
|
|
unpacked_filename = line_splited[0]
|
|
index = None
|
|
if files_rebuild_strategy in ["index", "mixed"]:
|
|
if line_splited[1] != "auto":
|
|
index = line_splited[1]
|
|
if index[:2] != "0x" or len(index) < 3:
|
|
raise AfsIndexValueError(f"Error - Invalid entry index in afs_rebuild.csv: {index} - \"{line}\"")
|
|
index = int(index[2:], 16)
|
|
if index >= self.__file_count:
|
|
raise AfsIndexOverflowError(f"Error - Invalid entry index in afs_rebuild.csv: 0x{index:x} - \"{line}\" - index must be < files_count.")
|
|
if index in reserved_indexes:
|
|
raise AfsIndexCollisionError("Error - Multiple files using same index: 0x{index:x}")
|
|
reserved_indexes.append( index )
|
|
|
|
file_path = root_path / unpacked_filename
|
|
if not file_path.is_file():
|
|
raise AfsInvalidFilePathError(f"Error - File {file_path} doesn't exist.")
|
|
file_length = file_path.stat().st_size
|
|
|
|
offset = None
|
|
if files_rebuild_strategy in ["offset", "mixed"]:
|
|
if line_splited[2] != "auto":
|
|
offset = line_splited[2]
|
|
if offset[:2] != "0x" or len(offset) < 3:
|
|
raise AfsOffsetValueError(f"Error - Invalid entry offset in afs_rebuild.csv: {offset} - \"{line}\"")
|
|
offset = int(offset[2:], 16)
|
|
if offset % Afs.ALIGN > 0:
|
|
raise AfsOffsetAlignError(f"Error - Invalid entry offset in afs_rebuild.csv: 0x{offset:x} - \"{line}\" - offset must be aligned to 0x800.")
|
|
|
|
csv_files_lists.append( [unpacked_filename, index, offset, line_splited[3], file_length] )
|
|
|
|
files_paths.remove( root_path / unpacked_filename )
|
|
elif len(line_splited) == 2: # empty block
|
|
if line_splited[0][:2] != "0x" or line_splited[1][:2] != "0x" or len(line_splited[0]) < 3 or len(line_splited[1]) < 3:
|
|
raise AfsEmptyBlockValueError(f"Error - Invalid empty block values: \"{line}\"")
|
|
offset = int(line_splited[0][2:], 16)
|
|
length = int(line_splited[1][2:], 16)
|
|
if offset % Afs.ALIGN > 0 or length % Afs.ALIGN > 0:
|
|
raise AfsEmptyBlockAlignError(f"Error - Invalid empty block offset or length in afs_rebuild.csv: \"{line}\" - offset and length must be aligned to 0x800.")
|
|
empty_blocks_list.append([None, None, offset, None, length])
|
|
else:
|
|
raise AfsInvalidFieldsCountError(f"Error - Invalid entry fields count in afs_rebuild.csv: \"{line}\"")
|
|
|
|
# We generate file memory map with offsets:
|
|
# available_space_ranges is then used to put files that have an adapted length
|
|
# max_offset is used here to find memory collisions between files and next available space
|
|
available_space_ranges = []
|
|
tmp_ranges = empty_blocks_list
|
|
if files_rebuild_strategy in ["offset", "mixed"]:
|
|
tmp_ranges += csv_files_lists
|
|
|
|
# We have to sort offsets before merging to avoid complex algorithm
|
|
# TOC is already present with max_offset
|
|
for file_tuple in sorted(tmp_ranges, key=lambda x: (x[2] is not None, x[2])):
|
|
offset = file_tuple[2]
|
|
if offset is None:
|
|
continue
|
|
if offset < max_offset:
|
|
raise AfsOffsetCollisionError(f"Error - Offsets collision with offset \"0x{offset:x}\".")
|
|
elif offset > max_offset:
|
|
available_space_ranges.append( [max_offset, offset] )
|
|
max_offset = int(ceil((offset + file_tuple[4]) / Afs.ALIGN)) * Afs.ALIGN
|
|
|
|
for file_path in files_paths:
|
|
csv_files_lists.append( [file_path.name, None, None, file_path.name, file_path.stat().st_size] )
|
|
|
|
# sort by filename
|
|
csv_files_lists.sort(key=lambda x: x[3])
|
|
current_offset = max_offset
|
|
|
|
# if index==None -> Assign an index not in reserved_indexes
|
|
reserved_indexes.sort()
|
|
next_index = 0
|
|
for i in range(len(csv_files_lists)):
|
|
if csv_files_lists[i][1] is None and files_rebuild_strategy in ["index", "mixed"] or files_rebuild_strategy in ["auto", "offset"]:
|
|
for j in range(next_index, len(csv_files_lists)):
|
|
if j not in reserved_indexes:
|
|
next_index = j + 1
|
|
csv_files_lists[i][1] = j
|
|
break
|
|
# sort by index
|
|
csv_files_lists.sort(key=lambda x: x[1])
|
|
|
|
# if offset==None -> Assign an offset in available_space_ranges or at the end of file allocated space
|
|
for i in range(len(csv_files_lists)):
|
|
if files_rebuild_strategy in ["offset", "mixed"] and csv_files_lists[i][2] is None or files_rebuild_strategy in ["auto", "index"]:
|
|
block_len = int(ceil(csv_files_lists[i][4] / Afs.ALIGN)) * Afs.ALIGN
|
|
for j in range(len(available_space_ranges)):
|
|
available_block_len = int(ceil((available_space_ranges[j][1] - available_space_ranges[j][0]) / Afs.ALIGN)) * Afs.ALIGN
|
|
if block_len <= available_block_len:
|
|
csv_files_lists[i][2] = available_space_ranges[j][0]
|
|
if block_len == available_block_len:
|
|
del available_space_ranges[j]
|
|
else:
|
|
available_space_ranges[j][0] += block_len
|
|
break
|
|
else:
|
|
# Here we have a bigger file than available ranges so we pick current_offset at the end of allocated space
|
|
csv_files_lists[i][2] = current_offset
|
|
current_offset += block_len
|
|
|
|
if self.__filenamedirectory_offset_offset:
|
|
self.__filenamedirectory = b""
|
|
fd_last_attribute_type = config["FilenameDirectory"]["fd_last_attribute_type"]
|
|
if fd_last_attribute_type[:2] == "0x":
|
|
fd_last_attribute_type = int(fd_last_attribute_type[2:], 16)
|
|
|
|
# Have to be sorted by index
|
|
# current_offset contains now fd offset if not already set
|
|
resolver = FilenameResolver(sys_path)
|
|
for i in range(len(csv_files_lists)):
|
|
self.__tableofcontent += csv_files_lists[i][2].to_bytes(4, "little") + csv_files_lists[i][4].to_bytes(4, "little")
|
|
# unpacked_filename, index, offset, filename, file_length
|
|
if self.__filenamedirectory_offset_offset:
|
|
mtime = b"\x00" * 12 # will be patched next pack
|
|
fd_last_attribute = None
|
|
if type(fd_last_attribute_type) == int:
|
|
fd_last_attribute = fd_last_attribute_type.to_bytes(4, "little")
|
|
elif fd_last_attribute_type == "length":
|
|
fd_last_attribute = csv_files_lists[i][4].to_bytes(4, "little")
|
|
elif fd_last_attribute_type == "offset-length":
|
|
fd_last_attribute = self.__tableofcontent[8+i*4:8+i*4+4]
|
|
else: # == unknown
|
|
fd_last_attribute = b"\x00"*4
|
|
self.__filenamedirectory += bytes(csv_files_lists[i][3], "utf-8").ljust(32, b"\x00") + mtime + fd_last_attribute
|
|
# if unpacked_filename != filename we store it into the resolver
|
|
if csv_files_lists[i][0] != csv_files_lists[i][3] or not self.__filenamedirectory_offset_offset:
|
|
resolver.add(i, csv_files_lists[i][0])
|
|
resolver.save()
|
|
if self.__filenamedirectory:
|
|
if not self.__filenamedirectory_offset:
|
|
self.__filenamedirectory_offset = current_offset
|
|
elif self.__filenamedirectory_offset < current_offset:
|
|
raise AfsFdOffsetCollisionError(f"Error - Invalid FD offset 0x{self.__filenamedirectory_offset:x} < last used file block end 0x{current_offset:x}.")
|
|
self.__tableofcontent = self.__tableofcontent.ljust(self.__filenamedirectory_offset_offset+8, b"\x00") # Add pad if needed
|
|
self.__tableofcontent[self.__filenamedirectory_offset_offset:self.__filenamedirectory_offset_offset+8] = self.__filenamedirectory_offset.to_bytes(4, "little") + self.__filenamedirectory_len.to_bytes(4, "little")
|
|
|
|
logging.info(f"Writting {Path('sys/filenamedirectory.bin')}")
|
|
(sys_path / "filenamedirectory.bin").write_bytes(self.__filenamedirectory)
|
|
logging.info(f"Writting {Path('sys/tableofcontent.bin')}")
|
|
(sys_path / "tableofcontent.bin").write_bytes(self.__tableofcontent)
|
|
def stats(self, path:Path):
|
|
"""
|
|
Stats will print the AFS stats:
|
|
Get full informations about header, TOC, FD, full memory mapping
|
|
sorted by offsets (files and sys files), addresses space informations,
|
|
and duplicated filenames grouped by filenames.
|
|
"""
|
|
if path.is_file():
|
|
with path.open("rb") as afs_file:
|
|
self.__loadsys_from_afs(afs_file, path.stat().st_size)
|
|
else:
|
|
self.__loadsys_from_folder(path / "sys")
|
|
|
|
files_map = self.__get_formated_map()
|
|
files_map.sort(key=lambda x: x[1]) # sort by offset (str with fixed len=8)
|
|
|
|
# Offsets intersect
|
|
dup_offsets_tuples = []
|
|
last_tuple = (-1, "-1", "0") # empty space search init
|
|
new_set = True
|
|
# Filenames duplicates
|
|
dup_names_dict = {} # tmp dict for grouping by filename
|
|
dup_names_tuples = []
|
|
# For empty blocks
|
|
empty_space_tuples = []
|
|
for file_tuple in files_map:
|
|
# Filenames duplicates
|
|
if not file_tuple[6] in dup_names_dict:
|
|
dup_names_dict[file_tuple[6]] = [file_tuple]
|
|
else:
|
|
dup_names_dict[file_tuple[6]].append(file_tuple)
|
|
# Offsets intersect
|
|
if file_tuple[1] < last_tuple[1]:
|
|
if new_set:
|
|
dup_offsets_tuples.append("Files sharing same offsets:\n")
|
|
new_set = False
|
|
dup_offsets_tuples.append(file_tuple)
|
|
else:
|
|
new_set = True
|
|
# Empty blocks
|
|
last_block_end = ceil(int(last_tuple[2], base=16) / Afs.ALIGN) * Afs.ALIGN
|
|
if int(file_tuple[1], base=16) - last_block_end >= Afs.ALIGN:
|
|
empty_space_tuples.append( (last_tuple[2], file_tuple[1], f"{int(file_tuple[1], base=16) - int(last_tuple[2], base=16):08x}", file_tuple[6]) )
|
|
last_tuple = file_tuple
|
|
|
|
for filename in dup_names_dict:
|
|
if len(dup_names_dict[filename]) > 1:
|
|
dup_names_tuples += ["Files sharing same name:\n"] + [file_tuple for file_tuple in dup_names_dict[filename]]
|
|
|
|
dup_offsets = "Yes" if len(dup_offsets_tuples) > 1 else "No"
|
|
dup_names = "Yes" if len(dup_names_tuples) > 1 else "No"
|
|
empty_space = "Yes" if len(empty_space_tuples) > 1 else "No"
|
|
|
|
files_info = f"AFS Magic/Version : {str(self.__get_magic())[2:-1]}\n"
|
|
files_info += f"TOC offset of the FD offset : 0x{self.__filenamedirectory_offset_offset:x}\n" if self.__filenamedirectory else ""
|
|
files_info += f"Multiple files using same offsets: {dup_offsets}\n"
|
|
files_info += f"Multiple files using same name : {dup_names}\n" if self.__filenamedirectory else ""
|
|
files_info += f"Empty blocks : {empty_space}\n"
|
|
self.__print("Global infos and AFS space mapping:", files_map, infos=files_info)
|
|
if dup_offsets_tuples:
|
|
self.__print("Files sharing same AFS offsets:", dup_offsets_tuples)
|
|
if dup_names_tuples:
|
|
self.__print("Files using same filenames:", dup_names_tuples)
|
|
if empty_space_tuples:
|
|
self.__print("Empty blocks between files (filename = name of the previous file):", empty_space_tuples, columns=[1,2,3,6])
|
|
|
|
|
|
def get_argparser():
|
|
import argparse
|
|
parser = argparse.ArgumentParser(description='AFS packer & unpacker - [GameCube] v' + __version__)
|
|
parser.add_argument('--version', action='version', version='%(prog)s ' + __version__)
|
|
parser.add_argument('-v', '--verbose', action='store_true', help='verbose mode')
|
|
parser.add_argument('input_path', metavar='INPUT', help='')
|
|
parser.add_argument('output_path', metavar='OUTPUT', help='', nargs='?', default="")
|
|
|
|
group = parser.add_mutually_exclusive_group(required=True)
|
|
group.add_argument('-p', '--pack', action='store_true', help="-p source_folder (dest_file.afs): Pack source_folder in new file source_folder.afs or dest_file.afs if specified.")
|
|
group.add_argument('-u', '--unpack', action='store_true', help="-u source_afs.afs (dest_folder): Unpack the AFS in new folder source_afs or dest_folder if specified.")
|
|
group.add_argument('-s', '--stats', action='store_true', help="-s source_afs.afs or source_folder: Get stats about AFS, files, memory, lengths and offsets.")
|
|
group.add_argument('-r', '--rebuild', action='store_true', help="-r source_folder: Rebuild AFS tableofcontent (TOC) and filenamedirectory (FD) using afs_rebuild.conf file and afs_rebuild.csv.")
|
|
return parser
|
|
|
|
|
|
if __name__ == '__main__':
|
|
logging.basicConfig(format='%(levelname)s:%(message)s', level=logging.INFO)
|
|
args = get_argparser().parse_args()
|
|
|
|
p_input = Path(args.input_path)
|
|
p_output = Path(args.output_path)
|
|
|
|
afs = Afs()
|
|
if args.verbose:
|
|
logging.getLogger().setLevel(logging.DEBUG)
|
|
|
|
if args.pack:
|
|
logging.info("### Pack in new AFS")
|
|
if(p_output == Path(".")):
|
|
p_output = Path(p_input.with_suffix(".afs"))
|
|
logging.info(f"packing folder {p_input} in {p_output}")
|
|
afs.pack( p_input, p_output )
|
|
elif args.unpack:
|
|
logging.info("### Unpack AFS in new folder")
|
|
if p_output == Path("."):
|
|
p_output = p_input.parent / p_input.stem
|
|
logging.info(f"unpacking AFS {p_input} in {p_output}")
|
|
afs.unpack( p_input, p_output )
|
|
elif args.stats:
|
|
afs.stats(p_input)
|
|
elif args.rebuild:
|
|
if not (p_input / "sys").is_dir():
|
|
raise AfsInvalidAfsFolderError(f"Error - Invalid unpacked AFS: {p_input}.")
|
|
logging.info(f"rebuilding {p_input}")
|
|
afs.rebuild(p_input)
|