diff --git a/afstool/afstool.py b/afstool/afstool.py new file mode 100644 index 0000000..634ee0a --- /dev/null +++ b/afstool/afstool.py @@ -0,0 +1,705 @@ +#!/usr/bin/env python3 +from configparser import ConfigParser +from datetime import datetime +import logging +from math import ceil +import os +from pathlib import Path +import re +import time + + +__version__ = "0.1.1" +__author__ = "rigodron, algoflash, GGLinnk" +__license__ = "MIT" +__status__ = "developpement" + + +# Not tested: +class AfsInvalidFileLenError(Exception): pass +class AfsEmptyAfsError(Exception): pass +class AfsInvalidFilenameDirectoryLengthError(Exception): pass +class AfsInvalidAfsFolderError(Exception): pass +# Tested: +class AfsInvalidMagicNumberError(Exception): pass +class AfsInvalidFilesRebuildStrategy(Exception): pass +class AfsFilenameDirectoryValueError(Exception): pass +class AfsInvalidFilePathError(Exception): pass +class AfsInvalidFieldsCountError(Exception): pass +class AfsIndexValueError(Exception): pass +class AfsIndexOverflowError(Exception): pass +class AfsIndexCollisionError(Exception): pass +class AfsOffsetValueError(Exception): pass +class AfsOffsetAlignError(Exception): pass +class AfsOffsetCollisionError(Exception): pass +class AfsFdOffsetOffsetValueError(Exception): pass +class AfsFdOffsetValueError(Exception): pass +class AfsFdLastAttributeTypeValueError(Exception): pass +class AfsFdOffsetCollisionError(Exception): pass +class AfsEmptyBlockValueError(Exception): pass +class AfsEmptyBlockAlignError(Exception): pass + + +class FilenameResolver: + __sys_path = None + __names_tuples = None + __resolve_buffer = "" + __separator = '/' + def __init__(self, sys_path:Path): + self.__sys_path = sys_path + self.__names_tuples = {} + self.__load() + def __load(self): + if (self.__sys_path / "filename_resolver.csv").is_file(): + self.__resolve_buffer = (self.__sys_path / "filename_resolver.csv").read_text() + for line in self.__resolve_buffer.split('\n'): + name_tuple = line.split(self.__separator) + self.__names_tuples[name_tuple[1]] = int(name_tuple[0]) + def save(self): + if len(self.__resolve_buffer) > 0: + logging.info(f"Writting {Path('sys/filename_resolver.csv')}") + (self.__sys_path / "filename_resolver.csv").write_text(self.__resolve_buffer[:-1]) + # resolve generate a unique filename when unpacking + def resolve_new(self, fileindex:int, filename:str): + if filename in self.__names_tuples: + i = 1 + new_filename = f"{Path(filename).stem} ({i}){Path(filename).suffix}" + while new_filename in self.__names_tuples: + i+=1 + new_filename = f"{Path(filename).stem} ({i}){Path(filename).suffix}" + self.__names_tuples[new_filename] = fileindex + self.__resolve_buffer += f"{fileindex}{self.__separator}{new_filename}\n" + return new_filename + self.__names_tuples[filename] = fileindex + return filename + # Add new entry forcing the unpacked_filename² + def add(self, fileindex:int, unpacked_filename:str): + self.__names_tuples[unpacked_filename] = fileindex + self.__resolve_buffer += f"{fileindex}{self.__separator}{unpacked_filename}\n" + # return generated filename if it exist else filename + def resolve_from_index(self, fileindex:int, filename:str): + for filename_key, fileindex_value in self.__names_tuples.items(): + if fileindex_value == fileindex: + return filename_key + return filename + + +# http://wiki.xentax.com/index.php/GRAF:AFS_AFS +class Afs: + MAGIC_00 = b"AFS\x00" + MAGIC_20 = b"AFS\x20" + ALIGN = 0x800 + HEADER_LEN = 8 + FILENAMEDIRECTORY_ENTRY_LEN = 0x30 + __file_count = None + __filenamedirectory_offset_offset = None + __filenamedirectory_offset = None + __filenamedirectory_len = None + __filenamedirectory = None + __tableofcontent = None + def __get_magic(self): + return bytes(self.__tableofcontent[0:4]) + def __get_file_count(self): + return int.from_bytes(self.__tableofcontent[4:8], "little") + def __get_filenamedirectory_offset(self): + return int.from_bytes(self.__tableofcontent[self.__filenamedirectory_offset_offset:self.__filenamedirectory_offset_offset+4], "little") + def __get_filenamedirectory_len(self): + return int.from_bytes(self.__tableofcontent[self.__filenamedirectory_offset_offset+4:self.__filenamedirectory_offset_offset+8], "little") + def __get_file_offset(self, fileindex:int): + return int.from_bytes(self.__tableofcontent[Afs.HEADER_LEN+fileindex*8:Afs.HEADER_LEN+fileindex*8+4], "little") + def __get_file_len(self, fileindex:int): + return int.from_bytes(self.__tableofcontent[Afs.HEADER_LEN+fileindex*8+4:Afs.HEADER_LEN+fileindex*8+8], "little") + def __get_file_name(self, fileindex:int): + return self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+32].split(b"\x00")[0].decode("utf-8") + def __get_file_fdlast(self, fileindex:int): + return int.from_bytes(self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+44:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+48], "little") + def __get_file_mtime(self, fileindex:int): + mtime_data = self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+32:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+44] + year = int.from_bytes(mtime_data[0:2], "little") + month = int.from_bytes(mtime_data[2:4], "little") + day = int.from_bytes(mtime_data[4:6], "little") + hour = int.from_bytes(mtime_data[6:8], "little") + minute = int.from_bytes(mtime_data[8:10], "little") + second = int.from_bytes(mtime_data[10:12], "little") + return time.mktime(datetime(year=year, month=month, day=day, hour=hour, minute=minute, second=second).timetuple()) + def __patch_file_len(self, fileindex:int, file_len:int): # Patch file_len in the TOC + self.__tableofcontent[Afs.HEADER_LEN+fileindex*8+4:Afs.HEADER_LEN+fileindex*8+8] = file_len.to_bytes(4, "little") + def __patch_file_mtime(self, fileindex:int, mtime): + mtime = datetime.fromtimestamp(mtime) + self.__filenamedirectory[Afs.FILENAMEDIRECTORY_ENTRY_LEN*fileindex+32:Afs.FILENAMEDIRECTORY_ENTRY_LEN*fileindex+44] = \ + mtime.year.to_bytes(2,"little")+ \ + mtime.month.to_bytes(2,"little")+ \ + mtime.day.to_bytes(2,"little")+ \ + mtime.hour.to_bytes(2,"little")+ \ + mtime.minute.to_bytes(2,"little")+\ + mtime.second.to_bytes(2,"little") + def __patch_fdlasts(self, fileindex:int, fd_last_attribute_type): # Patch FD last attributes according to the type + if type(fd_last_attribute_type) == int: # every entry has the same const value + self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+44:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+48] = fd_last_attribute_type.to_bytes(4, "little") + elif fd_last_attribute_type == "length": # + self.__filenamedirectory[fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+44:fileindex*Afs.FILENAMEDIRECTORY_ENTRY_LEN+48] = self.__get_file_len(fileindex).to_bytes(4, "little") + elif fd_last_attribute_type == "offset-length": + # 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 + # updated_index = index*2+1 with index*2+1 < self.__file_count + updated_fdlast_index = fileindex*2+1 + if updated_fdlast_index < self.__file_count: + 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") + # fd_last_attribute_type == unknown + def __pad(self, data:bytes): + if len(data) % Afs.ALIGN != 0: + data += b"\x00" * (Afs.ALIGN - (len(data) % Afs.ALIGN)) + return data + def __clean_filenamedirectory(self): + self.__filenamedirectory = None + self.__filenamedirectory_offset = None + self.__filenamedirectory_len = None + def __loadsys_from_afs(self, afs_file, afs_len:int): + self.__tableofcontent = afs_file.read(Afs.HEADER_LEN) + if self.__get_magic() not in [Afs.MAGIC_00, Afs.MAGIC_20]: + raise AfsInvalidMagicNumberError("Error - Invalid AFS magic number.") + self.__file_count = self.__get_file_count() + self.__tableofcontent += afs_file.read(self.__file_count*8) + tableofcontent_len = len(self.__tableofcontent) + + offset = tableofcontent_len + + tmp_block = int.from_bytes(afs_file.read(4), "little") + if tmp_block != 0: + self.__filenamedirectory_offset_offset = offset + self.__filenamedirectory_offset = tmp_block + else: + # If filenamedirectory_offset is not directly after the files offsets and lens + # --> we search the next uint32 != 0 + offset += 4 + block_len = 0x800 + tmp_block = afs_file.read(block_len) + while tmp_block: + match = re.search(b"^(?:\x00{4})*(?!\x00{4})(.{4})", tmp_block) # match next uint32 + if match: + self.__filenamedirectory_offset_offset = offset + match.start(1) + self.__filenamedirectory_offset = int.from_bytes(match[1], "little") + break + offset += block_len + tmp_block = afs_file.read(block_len) + + # This because we retrieve an int valid or not into fd offset + if self.__filenamedirectory_offset is None: + raise AfsEmptyAfsError("Error - Empty AFS.") + + afs_file.seek(self.__filenamedirectory_offset_offset+4) + self.__filenamedirectory_len = int.from_bytes(afs_file.read(4), "little") + + # Test if offset of filenamedirectory is valid and if number of entries match between filenamedirectory and tableofcontent + if self.__filenamedirectory_offset + self.__filenamedirectory_len > afs_len or \ + self.__filenamedirectory_offset < self.__filenamedirectory_offset_offset or \ + (tableofcontent_len - self.HEADER_LEN) / 8 != self.__filenamedirectory_len / Afs.FILENAMEDIRECTORY_ENTRY_LEN: + self.__clean_filenamedirectory() + return False + + afs_file.seek(self.__filenamedirectory_offset) + self.__filenamedirectory = afs_file.read(self.__filenamedirectory_len) + + # Test if filename is correct by very basic pattern matching + pattern = re.compile(b"^(?=.{32}$)[^\x00]+\x00+$") + for i in range(self.__file_count): + if not pattern.fullmatch(self.__filenamedirectory[i*Afs.FILENAMEDIRECTORY_ENTRY_LEN:i*Afs.FILENAMEDIRECTORY_ENTRY_LEN+32]): + self.__clean_filenamedirectory() + return False + + afs_file.seek(tableofcontent_len) + self.__tableofcontent += afs_file.read(self.__filenamedirectory_offset_offset+8 - tableofcontent_len) + return True + def __loadsys_from_folder(self, sys_path:Path): + self.__tableofcontent = bytearray( (sys_path / "tableofcontent.bin").read_bytes() ) + self.__file_count = self.__get_file_count() + + # If there is a filenamedirectory we load it + if (sys_path / "filenamedirectory.bin").is_file(): + self.__filenamedirectory = bytearray((sys_path / "filenamedirectory.bin").read_bytes()) + self.__filenamedirectory_offset_offset = len(self.__tableofcontent) - 8 + self.__filenamedirectory_offset = self.__get_filenamedirectory_offset() + self.__filenamedirectory_len = self.__get_filenamedirectory_len() + if self.__filenamedirectory_len != len(self.__filenamedirectory): + raise AfsInvalidFilenameDirectoryLengthError("Error - Tableofcontent filenamedirectory length does not match real filenamedirectory length.") + def __print(self, title:str, lines_tuples, columns:list = list(range(7)), infos:str = ""): + stats_buffer = "#"*100+f"\n# {title}\n"+"#"*100+f"\n{infos}|"+"-"*99+"\n" + if 0 in columns: stats_buffer += "| Index "; + if 1 in columns: stats_buffer += "| b offset "; + if 2 in columns: stats_buffer += "| e offset "; + if 3 in columns: stats_buffer += "| length "; + if 4 in columns: stats_buffer += "| YYYY-mm-dd HH:MM:SS "; + if 5 in columns: stats_buffer += "| FD last "; + if 6 in columns: stats_buffer += "| Filename"; + stats_buffer += "\n|"+"-"*99+"\n" + for line in lines_tuples: + stats_buffer += line if type(line) == str else "| "+" | ".join(line)+"\n" + print(stats_buffer, end='') + # end offset not included (0,1) -> len=1 + # return a list of offsets where files and sys files begin + def __get_offsets_map(self): + # offsets_map is used to check next used offset when updating files + # we also check if there is intersect between files + offsets_map = [(0, len(self.__tableofcontent))] + for i in range(self.__file_count): + file_offset = self.__get_file_offset(i) + offsets_map.append( (file_offset, file_offset + self.__get_file_len(i)) ) + if self.__filenamedirectory: + filenamedirectory_offset = self.__get_filenamedirectory_offset() + offsets_map.append( (filenamedirectory_offset, filenamedirectory_offset + self.__get_filenamedirectory_len()) ) + offsets_map.sort(key=lambda x: x[0]) + + # Check if there is problems in file memory mapping + last_tuple = (-1, -1) + for i, offsets_tuple in enumerate(offsets_map): + if offsets_tuple[0] < last_tuple[1]: + raise AfsOffsetCollisionError(f"Error - Multiple files use same file offsets ranges.") + last_tuple = offsets_tuple + offsets_map[i] = offsets_tuple[0] + return offsets_map + # end offset not included (0,1) -> len=1 + def __get_formated_map(self): + files_map = [("SYS TOC ", "00000000", f"{len(self.__tableofcontent):08x}", f"{len(self.__tableofcontent):08x}", "SYS TOC"+' '*12, "SYS TOC ", "SYS TOC")] + + for i in range(self.__file_count): + file_offset = self.__get_file_offset(i) + file_len = self.__get_file_len(i) + file_date = datetime.fromtimestamp(self.__get_file_mtime(i)).strftime("%Y-%m-%d %H:%M:%S") if self.__filenamedirectory else " "*19 + filename = self.__get_file_name(i) if self.__filenamedirectory else f"{i:08}" + fdlast = f"{self.__get_file_fdlast(i):08x}" if self.__filenamedirectory else " "*8 + files_map.append((f"{i:08x}", f"{file_offset:08x}", f"{file_offset + file_len:08x}", f"{file_len:08x}", file_date, fdlast, filename)) + + if self.__filenamedirectory: + files_map.append(("SYS FD ", f"{self.__filenamedirectory_offset:08x}", \ + f"{self.__filenamedirectory_offset + len(self.__filenamedirectory):08x}", \ + f"{len(self.__filenamedirectory):08x}", "SYS FD"+' '*13, "SYS FD ", "SYS FD")) + return files_map + def __get_fdlast_type(self): + # Try to get the type of FD last attribute + length_type = True + offset_length_type = True + constant_type = self.__get_file_fdlast(0) + + for i in range(self.__file_count): + fd_last_attribute = self.__get_file_fdlast(i) + if fd_last_attribute != self.__get_file_len(i): + 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): + 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/blob/main/README.md#afs_rebuildconf--afs_rebuildcsv") + 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): + 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(f"Writting {Path('sys/filenamedirectory.bin')}") + (sys_path / "filenamedirectory.bin").write_bytes(self.__filenamedirectory) + resolver = FilenameResolver(sys_path) + + logging.info(f"Writting {Path('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}" + + 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): + 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) + + 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) + def rebuild(self, folder_path:Path): + 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 = list(root_path.glob("*")) + 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): + 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)