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https://github.com/Virtual-World-RE/NeoGF.git
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Update afstool.py
fix bugs with specifics situations
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tmpz23
GitHub
parent
f08c3c8038
commit
745e4db98d
74
afstool.py
74
afstool.py
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@ -3,9 +3,10 @@ from datetime import datetime
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from pathlib import Path
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import logging
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import os
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import re
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import time
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__version__ = "0.0.1"
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__version__ = "0.0.2"
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__author__ = "rigodron, algoflash, GGLinnk"
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__license__ = "MIT"
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__status__ = "developpement"
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@ -13,7 +14,8 @@ __status__ = "developpement"
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# http://wiki.xentax.com/index.php/GRAF:AFS_AFS
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class Afs:
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MAGIC = b"AFS\x00"
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MAGIC_00 = b"AFS\x00"
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MAGIC_20 = b"AFS\x20"
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ALIGN = 0x800
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HEADER_LEN = 8
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FILENAMEBLOCK_ENTRY_LEN = 0x30
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@ -32,28 +34,28 @@ class Afs:
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self.__len = afs_path.stat().st_size
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with afs_path.open("rb") as afs_file:
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self.__tableofcontent = afs_file.read(Afs.HEADER_LEN)
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if self.__get_magic() != Afs.MAGIC:
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raise Exception("Invalid AFS magic number")
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if self.__get_magic() not in [Afs.MAGIC_00, Afs.MAGIC_20]:
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raise Exception("Invalid AFS magic number.")
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self.__file_number = int.from_bytes(self.__tableofcontent[4:8], "little")
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self.__tableofcontent += afs_file.read(self.__file_number*8)
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(self.__filenameblock_offset_offset, self.__filenameblock_offset) = self.__get_next_uint32(afs_file, Afs.HEADER_LEN+self.__file_number*8)
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afs_file.seek(self.__filenameblock_offset_offset+4)
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self.__filenameblock_len = int.from_bytes(afs_file.read(4), "little")
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if not self.__load_filenameblock(afs_file):
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logging.info("There is no filename block. Creating new names and dates for files.")
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else:
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logging.debug(f"Filenameblock offset:0x{self.__filenameblock_offset:x}, filenameblock len:0x{self.__filenameblock_len}.")
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logging.debug(f"Filenameblock_offset:0x{self.__filenameblock_offset:x}, filenameblock_len:0x{self.__filenameblock_len:x}.")
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afs_file.seek(len(self.__tableofcontent))
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self.__tableofcontent += afs_file.read(self.__filenameblock_offset_offset+8 - len(self.__tableofcontent))
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with (sys_path / "filenameblock.bin").open("wb") as filenameblock_file:
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logging.info("Writting sys/filenameblock.bin")
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filenameblock_file.write(self.__filenameblock)
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with (sys_path / "tableofcontent.bin").open("wb") as tableofcontent_file:
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logging.info("Writting sys/tableofcontent.bin")
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tableofcontent_file.write(self.__tableofcontent)
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self.__extract_files(root_path, afs_file)
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logging.info("Writting sys/filenameblock.bin")
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(sys_path / "filenameblock.bin").write_bytes(self.__filenameblock)
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logging.info("Writting sys/tableofcontent.bin")
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(sys_path / "tableofcontent.bin").write_bytes(self.__tableofcontent)
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self.__extract_files(root_path, afs_file)
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def pack(self, folder_path:Path, afs_path:Path = None):
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if afs_path == None:
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afs_path = folder_path / Path(folder_path.name).with_suffix(".afs")
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@ -67,20 +69,19 @@ class Afs:
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if (sys_path / "filenameblock.bin").is_file():
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(self.__filenameblock_offset_offset, self.__filenameblock_offset) = self.__get_next_uint32(tableofcontent_file, Afs.HEADER_LEN+self.__file_number*8, (sys_path / "tableofcontent.bin").stat().st_size)
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self.__filenameblock_len = int.from_bytes(self.__tableofcontent[self.__filenameblock_offset_offset+4:self.__filenameblock_offset_offset+8], "little")
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with (sys_path / "filenameblock.bin").open("rb") as filenameblock_file:
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self.__filenameblock = filenameblock_file.read()
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self.__filenameblock = (sys_path / "filenameblock.bin").read_bytes()
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for i in range(0, self.__file_number):
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file_offset = int.from_bytes(self.__tableofcontent[Afs.HEADER_LEN+i*8:Afs.HEADER_LEN+i*8+4], "little")
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file_len = int.from_bytes(self.__tableofcontent[Afs.HEADER_LEN+i*8+4:Afs.HEADER_LEN+i*8+8], "little")
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if self.__filenameblock != None :
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filename = self.__filenameblock[i*Afs.FILENAMEBLOCK_ENTRY_LEN:i*Afs.FILENAMEBLOCK_ENTRY_LEN+32].split(b"\x00")[0].decode("utf-8")
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else:
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filename = f"unknown_{i}.bin"
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with (root_path / filename).open("rb") as new_file:
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logging.debug(f"Packing {root_path/filename} 0x{file_offset:x}:0x{file_offset+file_len:x} in iso.")
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afs_file.seek(file_offset)
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afs_file.write(self.__pad(new_file.read()))
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afs_file.write(self.__pad(self.__filenameblock))
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filename = f"{i:08}"
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logging.debug(f"Packing {root_path/filename} 0x{file_offset:x}:0x{file_offset+file_len:x} in iso.")
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afs_file.seek(file_offset)
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afs_file.write(self.__pad((root_path / filename).read_bytes()))
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if self.__filenameblock != None:
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afs_file.write(self.__pad(self.__filenameblock))
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def rebuild(self, folder_path:Path):
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raise Exception("Not implemented yet")
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def list(self, path:Path):
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@ -108,26 +109,25 @@ class Afs:
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second = int.from_bytes(self.__filenameblock[i*Afs.FILENAMEBLOCK_ENTRY_LEN+42:i*Afs.FILENAMEBLOCK_ENTRY_LEN+44], "little")
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mtime = time.mktime(datetime(year=year, month=month, day=day, hour=hour, minute=minute, second=second).timetuple())
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else:
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filename = f"unknown_{i}.bin"
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with (root_path / filename).open("wb") as new_file:
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logging.debug(f"Writting {root_path/filename} 0x{file_offset:x}:0x{file_offset+file_len:x}")
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afs_file.seek(file_offset)
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new_file.write(afs_file.read(file_len))
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filename = f"{i:08}"
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logging.debug(f"Writting {root_path/filename} 0x{file_offset:x}:0x{file_offset+file_len:x}")
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afs_file.seek(file_offset)
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(root_path / filename).write_bytes(afs_file.read(file_len))
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if self.__filenameblock != None :
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os.utime(root_path/filename, (mtime, mtime))
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def __load_filenameblock(self, afs_file):
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if self.__filenameblock_offset + self.__filenameblock_len > self.__len or self.__filenameblock_offset < self.__filenameblock_offset_offset:
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if self.__filenameblock_offset + self.__filenameblock_len > self.__len or \
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self.__filenameblock_offset < self.__filenameblock_offset_offset or \
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(len(self.__tableofcontent) - self.HEADER_LEN) / 8 != self.__filenameblock_len / Afs.FILENAMEBLOCK_ENTRY_LEN:
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self.__clean_filenameblock()
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return False
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afs_file.seek(self.__filenameblock_offset)
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self.__filenameblock = afs_file.read(self.__filenameblock_len)
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if (len(self.__tableofcontent) - self.HEADER_LEN) / 8 != self.__filenameblock_len / Afs.FILENAMEBLOCK_ENTRY_LEN:
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self.__clean_filenameblock()
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return False
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for i in range(0, len(self.__tableofcontent)):
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if self.__tableofcontent[Afs.HEADER_LEN+i*8+4:Afs.HEADER_LEN+i*8+8] != self.__filenameblock[i*Afs.FILENAMEBLOCK_ENTRY_LEN+44:i*Afs.FILENAMEBLOCK_ENTRY_LEN+48]:
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pattern = re.compile(b"^(?=.{32}$)[^\x00]+\x00+$")
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for i in range(0, self.__file_number):
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if not pattern.fullmatch(self.__filenameblock[i*Afs.FILENAMEBLOCK_ENTRY_LEN:i*Afs.FILENAMEBLOCK_ENTRY_LEN+32]):
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self.__clean_filenameblock()
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return False
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return True
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@ -143,9 +143,9 @@ class Afs:
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file_len = self.__len
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file.seek(offset)
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next_uint32 = int.from_bytes(file.read(4), "little")
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offset += 4
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if next_uint32 != 0:
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return (offset, next_uint32)
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offset += 4
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# If filename_block_offset is not directly after the files offsets and lens
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# --> we search the next uint32 != 0
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while offset < file_len:
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@ -174,10 +174,10 @@ def get_argparser():
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parser.add_argument('output_path', metavar='OUTPUT', help='', nargs='?', default="")
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group = parser.add_mutually_exclusive_group(required=True)
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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")
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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")
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group.add_argument('-l', '--list', action='store_true', help="-l source_afs.afs or source_folder : List AFS files, length and offsets")
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group.add_argument('-r', '--rebuild', help="-r source_folder fndo_offset : Rebuild AFS tableofcontent and filenamedirectory using fndo_offset as filenamedirectory_offset_offset (the offset in the TOC)")
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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.")
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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.")
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group.add_argument('-l', '--list', action='store_true', help="-l source_afs.afs or source_folder : List AFS files, length and offsets.")
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group.add_argument('-r', '--rebuild', help="-r source_folder fndo_offset : Rebuild AFS tableofcontent (TOC) and filenamedirectory (FND) using filenamedirectory_offset_offset=fndo_offset (the offset in the TOC).")
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return parser
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