mirror of
https://github.com/Virtual-World-RE/NeoGF.git
synced 2024-11-15 05:35:34 +01:00
Create gcmtool.py
This commit is contained in:
tmpz23
GitHub
parent
c20b743952
commit
272774cbd4
538
gcmtool/gcmtool.py
Normal file
538
gcmtool/gcmtool.py
Normal file
|
|
@ -0,0 +1,538 @@
|
|||
#!/usr/bin/env python3
|
||||
from pathlib import Path
|
||||
import logging
|
||||
|
||||
|
||||
__version__ = "0.1.0"
|
||||
__author__ = "rigodron, algoflash, GGLinnk"
|
||||
__license__ = "MIT"
|
||||
__status__ = "developpement"
|
||||
|
||||
|
||||
def align_offset(offset:int, align:int):
|
||||
if offset % align != 0:
|
||||
offset += align - (offset % align)
|
||||
return offset
|
||||
|
||||
|
||||
class Fst:
|
||||
TYPE_FILE = 0
|
||||
TYPE_DIR = 1
|
||||
|
||||
|
||||
class Node:
|
||||
__id = None
|
||||
__name = None
|
||||
__name_offset = None
|
||||
def __init__(self, name:str):
|
||||
self.__name = name
|
||||
def id(self): return self.__id
|
||||
def name(self): return self.__name
|
||||
def name_offset(self): return self.__name_offset
|
||||
def set_id(self, id:int): self.__id = id
|
||||
def set_name_offset(self, name_offset:int): self.__name_offset = name_offset
|
||||
|
||||
|
||||
class File(Node):
|
||||
__type = Fst.TYPE_FILE
|
||||
__size = None
|
||||
__offset = None
|
||||
def __init__(self, name:str, size:int):
|
||||
super().__init__(name)
|
||||
self.__size = size
|
||||
def __str__(self):
|
||||
return f"{self.id()};{self.name()};{self.size()};{self.offset()};{self.name_offset()}"
|
||||
def type(self): return self.__type
|
||||
def size(self): return self.__size
|
||||
def offset(self): return self.__offset
|
||||
def set_offset(self, offset:int): self.__offset = offset
|
||||
def format(self):
|
||||
return self.type().to_bytes(1, "big") + self.name_offset().to_bytes(3, "big") + self.offset().to_bytes(4, "big") + self.size().to_bytes(4, "big")
|
||||
|
||||
|
||||
class Folder(Node):
|
||||
__type = Fst.TYPE_DIR
|
||||
__parent = None
|
||||
__next_dir = None
|
||||
__childs = None
|
||||
def __init__(self, name:str, parent:Node):
|
||||
super().__init__(name)
|
||||
self.__parent = parent
|
||||
self.__childs = []
|
||||
def __str__(self):
|
||||
return f"{self.id()};{self.name()};{self.next_dir()};{self.name_offset()}"
|
||||
def type(self): return self.__type
|
||||
def parent(self): return self.__parent
|
||||
def next_dir(self): return self.__next_dir
|
||||
def childs(self): return self.__childs
|
||||
def set_next_dir(self, next_dir): self.__next_dir = next_dir
|
||||
# Search child by name an return existing if found or new if not existing
|
||||
def add_child(self, node:Node):
|
||||
for child in self.__childs:
|
||||
if node.name() == child.name():
|
||||
return child
|
||||
self.__childs.append(node)
|
||||
return node
|
||||
def format(self):
|
||||
return self.type().to_bytes(1, "big") + self.name_offset().to_bytes(3, "big") + self.parent().id().to_bytes(4, "big") + self.next_dir().to_bytes(4, "big")
|
||||
|
||||
|
||||
class FstTree(Fst):
|
||||
__root_path_length = None
|
||||
__root_node = None
|
||||
__current_id = 0
|
||||
__current_file_offset = None
|
||||
__align = None
|
||||
__fst_block = None
|
||||
__name_block = None
|
||||
__nameblock_length = None # Used to find min file_offset when fst is at the end of the iso beginning
|
||||
def __init__(self, root_path:Path, fst_offset:int, align:int = 4):
|
||||
self.__root_path_length = len(root_path.parts)
|
||||
self.__root_node = Folder(root_path.name, None)
|
||||
self.__align = align
|
||||
self.__name_block = b""
|
||||
self.__fst_block = b""
|
||||
self.__nameblock_length = 0
|
||||
self.__current_file_offset = fst_offset
|
||||
def __str__(self):
|
||||
return self.__to_str(self.__root_node)
|
||||
def __to_str(self, node:Node, depth=0):
|
||||
result = (depth * " ") + str(node) +"\n"
|
||||
if node.type() == FstTree.TYPE_DIR:
|
||||
for child in node.childs():
|
||||
result += self.__to_str(child, depth+1)
|
||||
return result
|
||||
# Needed to know where we can begin to write files
|
||||
def __get_fst_length(self):
|
||||
self.__generate_nameblock_length()
|
||||
return align_offset(self.__count_childs(self.__root_node)*12 + 12 + self.__nameblock_length, self.__align)
|
||||
def __generate_nameblock_length(self, node:Node = None):
|
||||
if node is None:
|
||||
node = self.__root_node
|
||||
else:
|
||||
self.__nameblock_length += len(node.name()) + 1
|
||||
if node.type() == FstTree.TYPE_DIR:
|
||||
for child in node.childs():
|
||||
self.__generate_nameblock_length(child)
|
||||
def __prepare(self, node:Node = None):
|
||||
name_offset = 0
|
||||
if node is None:
|
||||
node = self.__root_node
|
||||
else:
|
||||
name_offset = len(self.__name_block)
|
||||
self.__name_block += node.name().encode("utf-8")+b"\x00"
|
||||
node.set_name_offset(name_offset)
|
||||
node.set_id(self.__current_id)
|
||||
self.__current_id += 1
|
||||
|
||||
if node.type() == FstTree.TYPE_DIR:
|
||||
node.set_next_dir(self.__current_id + self.__count_childs(node))
|
||||
if node == self.__root_node:
|
||||
self.__fst_block = b"\x01\x00\x00\x00\x00\x00\x00\x00" + node.next_dir().to_bytes(4, "big")
|
||||
else:
|
||||
self.__fst_block += node.format()
|
||||
for child in node.childs():
|
||||
self.__prepare(child)
|
||||
else:
|
||||
node.set_offset(self.__current_file_offset)
|
||||
self.__fst_block += node.format()
|
||||
self.__current_file_offset = align_offset(self.__current_file_offset + node.size(), self.__align)
|
||||
def __count_childs(self, node:Folder):
|
||||
count = 0
|
||||
for child in node.childs():
|
||||
if child.type() == FstTree.TYPE_DIR:
|
||||
count += self.__count_childs(child)
|
||||
return count + len(node.childs())
|
||||
def add_node_by_path(self, node_path:Path):
|
||||
parent = self.__root_node
|
||||
node = None
|
||||
for i in range(self.__root_path_length, len(node_path.parts)-1):
|
||||
node = Folder(node_path.parts[i], parent)
|
||||
parent = parent.add_child(node)
|
||||
if node_path.is_file():
|
||||
node = File(node_path.name, node_path.stat().st_size)
|
||||
else:
|
||||
node = Folder(node_path.name, parent)
|
||||
parent.add_child(node)
|
||||
def generate_fst(self):
|
||||
self.__current_file_offset += self.__get_fst_length()
|
||||
self.__prepare()
|
||||
return self.__fst_block + self.__name_block
|
||||
|
||||
|
||||
class BootBin:
|
||||
LEN = 0x440
|
||||
DOLOFFSET_OFFSET = 0x420
|
||||
FSTOFFSET_OFFSET = 0x424
|
||||
FSTLEN_OFFSET = 0x428
|
||||
MAXFSTLEN_OFFSET = 0x42c
|
||||
__data = None
|
||||
def __init__(self, data:bytes):
|
||||
self.__data = bytearray(data)
|
||||
def data(self): return self.__data
|
||||
def dvd_magic(self):
|
||||
return self.__data[0x1c:0x20]
|
||||
def fstbin_offset(self):
|
||||
return int.from_bytes(self.__data[BootBin.FSTOFFSET_OFFSET:BootBin.FSTOFFSET_OFFSET+4],"big", signed=False)
|
||||
def fstbin_len(self):
|
||||
return int.from_bytes(self.__data[BootBin.FSTLEN_OFFSET:BootBin.FSTLEN_OFFSET+4],"big", signed=False)
|
||||
def dol_offset(self):
|
||||
return int.from_bytes(self.__data[BootBin.DOLOFFSET_OFFSET:BootBin.DOLOFFSET_OFFSET+4],"big", signed=False)
|
||||
def game_code(self):
|
||||
return self.__data[:4].decode('utf-8')
|
||||
def disc_number(self):
|
||||
return int.from_bytes(self.__data[6:7], 'big', signed=False)
|
||||
def set_dol_offset(self, offset:int):
|
||||
self.__data[BootBin.DOLOFFSET_OFFSET:BootBin.DOLOFFSET_OFFSET+4] = offset.to_bytes(4, "big")
|
||||
def set_fst_offset(self, offset:int):
|
||||
self.__data[BootBin.FSTOFFSET_OFFSET:BootBin.FSTOFFSET_OFFSET+4] = offset.to_bytes(4, "big")
|
||||
def set_fst_len(self, size:int):
|
||||
self.__data[BootBin.FSTLEN_OFFSET:BootBin.FSTLEN_OFFSET+4] = size.to_bytes(4, "big")
|
||||
def set_max_fst_len(self, size:int):
|
||||
self.__data[BootBin.MAXFSTLEN_OFFSET:BootBin.MAXFSTLEN_OFFSET+4] = size.to_bytes(4, "big")
|
||||
|
||||
|
||||
class Dol:
|
||||
HEADER_LEN = 0x100
|
||||
HEADER_SECTIONLENTABLE_OFFSET = 0x90
|
||||
# Get total length using the sum of the 18 sections length and dol header length
|
||||
def get_dol_len(self, dolheader_data:bytes):
|
||||
dol_len = Dol.HEADER_LEN
|
||||
for i in range(18):
|
||||
dol_len += int.from_bytes(dolheader_data[Dol.HEADER_SECTIONLENTABLE_OFFSET+i*4:Dol.HEADER_SECTIONLENTABLE_OFFSET+(i+1)*4], "big", signed=False)
|
||||
return dol_len
|
||||
|
||||
|
||||
# https://sudonull.com/post/68549-Gamecube-file-system-device
|
||||
class Gcm:
|
||||
BI2BIN_LEN = 0x2000
|
||||
APPLOADER_HEADER_LEN = 0x20
|
||||
APPLOADER_OFFSET = 0x2440
|
||||
APPLOADERSIZE_OFFSET = 0x2454
|
||||
DVD_MAGIC = b"\xC2\x33\x9F\x3D"
|
||||
def unpack(self, iso_path:Path, folder_path:Path):
|
||||
with iso_path.open("rb") as iso_file:
|
||||
bootbin = BootBin(iso_file.read(BootBin.LEN))
|
||||
if bootbin.dvd_magic() != Gcm.DVD_MAGIC:
|
||||
raise Exception("Error - Invalid DVD format - this tool is for ISO/GCM files")
|
||||
|
||||
bi2bin_data = iso_file.read(Gcm.BI2BIN_LEN)
|
||||
|
||||
iso_file.seek(Gcm.APPLOADERSIZE_OFFSET)
|
||||
size = int.from_bytes(iso_file.read(4), "big", signed=False)
|
||||
trailerSize = int.from_bytes(iso_file.read(4), "big", signed=False)
|
||||
|
||||
apploader_size = Gcm.APPLOADER_HEADER_LEN + size + trailerSize
|
||||
|
||||
iso_file.seek(Gcm.APPLOADER_OFFSET)
|
||||
apploaderimg_data = iso_file.read(apploader_size)
|
||||
|
||||
fstbin_offset = bootbin.fstbin_offset()
|
||||
fstbin_len = bootbin.fstbin_len()
|
||||
iso_file.seek( fstbin_offset )
|
||||
fstbin_data = iso_file.read( fstbin_len )
|
||||
|
||||
dol_offset = bootbin.dol_offset()
|
||||
iso_file.seek( dol_offset )
|
||||
dol = Dol()
|
||||
dolheader_data = iso_file.read(Dol.HEADER_LEN)
|
||||
dol_len = dol.get_dol_len( dolheader_data )
|
||||
bootdol_data = dolheader_data + iso_file.read( dol_len - Dol.HEADER_LEN )
|
||||
|
||||
if folder_path == Path("."):
|
||||
folder_path = Path(f"{bootbin.game_code()}-{bootbin.disc_number():02}")
|
||||
if folder_path.is_dir():
|
||||
raise Exception(f"Error - \"{folder_path}\" already exist. Remove this folder or use another name for the unpack folder.")
|
||||
|
||||
logging.info(f"unpacking \"{iso_path}\" in \"{folder_path}\"")
|
||||
sys_path = folder_path / "sys"
|
||||
sys_path.mkdir(parents=True)
|
||||
|
||||
logging.debug(f"{iso_path}(0x0:0x{BootBin.LEN:x}) -> {sys_path / 'boot.bin'}")
|
||||
(sys_path / "boot.bin").write_bytes(bootbin.data())
|
||||
logging.debug(f"{iso_path}(0x440:0x{Gcm.APPLOADER_OFFSET:x}) -> {sys_path / 'bi2.bin'}")
|
||||
(sys_path / "bi2.bin" ).write_bytes(bi2bin_data)
|
||||
logging.debug(f"{iso_path}(0x{Gcm.APPLOADER_OFFSET:x}:0x{Gcm.APPLOADER_OFFSET + apploader_size:x} -> {sys_path / 'apploader.img'}")
|
||||
(sys_path / "apploader.img").write_bytes(apploaderimg_data)
|
||||
logging.debug(f"{iso_path}(0x{fstbin_offset:x}:0x{fstbin_offset + fstbin_len:x}) -> {sys_path / 'fst.bin'}")
|
||||
(sys_path / "fst.bin").write_bytes(fstbin_data)
|
||||
logging.debug(f"{iso_path}(0x{dol_offset:x}:0x{dol_offset + dol_len:x}) -> {sys_path / 'boot.dol'}")
|
||||
(sys_path / "boot.dol").write_bytes(bootdol_data)
|
||||
|
||||
root_path = folder_path / "root"
|
||||
root_path.mkdir()
|
||||
|
||||
# And now we parse FST data to unpack all files in the GCM iso file
|
||||
dir_id_path = {0: root_path}
|
||||
currentdir_path = root_path
|
||||
|
||||
# root: id=0 so nextdir is the end
|
||||
nextdir = int.from_bytes(fstbin_data[8:12], "big", signed=False)
|
||||
# offset of filenames block
|
||||
base_names = nextdir * 12
|
||||
# go to parent when id reach next dir
|
||||
nextdir_arr = [ nextdir ]
|
||||
|
||||
for id in range(1, base_names // 12):
|
||||
i = id * 12
|
||||
file_type = int.from_bytes(fstbin_data[i:i+1], "big", signed=False)
|
||||
name = fstbin_data[base_names + int.from_bytes(fstbin_data[i+1:i+4], "big", signed=False):].split(b"\x00")[0].decode("utf-8")
|
||||
|
||||
while id == nextdir_arr[-1]:
|
||||
currentdir_path = currentdir_path.parent
|
||||
nextdir_arr.pop()
|
||||
|
||||
if file_type == FstTree.TYPE_DIR:
|
||||
nextdir = int.from_bytes(fstbin_data[i+8:i+12], "big", signed=False)
|
||||
parentdir = int.from_bytes(fstbin_data[i+4:i+8], "big", signed=False)
|
||||
|
||||
nextdir_arr.append( nextdir )
|
||||
currentdir_path = dir_id_path[parentdir] / name
|
||||
dir_id_path[id] = currentdir_path
|
||||
currentdir_path.mkdir(exist_ok=True)
|
||||
else:
|
||||
fileoffset = int.from_bytes(fstbin_data[i+4:i+8], "big", signed=False)
|
||||
filesize = int.from_bytes(fstbin_data[i+8:i+12], "big", signed=False)
|
||||
|
||||
iso_file.seek(fileoffset)
|
||||
(currentdir_path / name).write_bytes( iso_file.read(filesize) )
|
||||
|
||||
logging.debug(f"{iso_path}(0x{fileoffset:x}:0x{fileoffset + filesize:x}) -> {currentdir_path / name}")
|
||||
def pack(self, folder_path:Path, iso_path:Path = None):
|
||||
if iso_path is None:
|
||||
iso_path = folder_path.parent / Path(folder_path.name).with_suffix(".iso")
|
||||
if iso_path.is_file():
|
||||
raise Exception(f"Error - {iso_path} already exist. Remove this file or use another GCM file name.")
|
||||
|
||||
with iso_path.open("wb") as iso_file:
|
||||
sys_path = folder_path / "sys"
|
||||
logging.debug(f"{sys_path / 'boot.bin'} -> {iso_path}(0x0:0x{BootBin.LEN:x})")
|
||||
logging.debug(f"{sys_path / 'bi2.bin'} -> {iso_path}(0x{BootBin.LEN:x}:0x{Gcm.APPLOADER_OFFSET:x})")
|
||||
logging.debug(f"{sys_path / 'apploader.img'} -> {iso_path}(0x{Gcm.APPLOADER_OFFSET:x}:0x{Gcm.APPLOADER_OFFSET + (sys_path / 'apploader.img').stat().st_size:x}")
|
||||
|
||||
bootbin = BootBin((sys_path / "boot.bin").read_bytes())
|
||||
iso_file.write(bootbin.data())
|
||||
iso_file.write((sys_path / "bi2.bin").read_bytes())
|
||||
iso_file.write((sys_path / "apploader.img").read_bytes())
|
||||
|
||||
fstbin_offset = bootbin.fstbin_offset()
|
||||
fstbin_len = bootbin.fstbin_len()
|
||||
if (sys_path / "fst.bin").stat().st_size != fstbin_len:
|
||||
raise Exception(f"Error - Invalid fst.bin size in boot.bin offset 0x{BootBin.FSTLEN_OFFSET:x}:0x{BootBin.FSTLEN_OFFSET+4:x}!")
|
||||
logging.debug(f"{sys_path / 'fst.bin'} -> {iso_path}(0x{fstbin_offset:x}:0x{fstbin_offset + fstbin_len:x})")
|
||||
iso_file.seek( fstbin_offset )
|
||||
fstbin_data = (sys_path / "fst.bin").read_bytes()
|
||||
iso_file.write( fstbin_data )
|
||||
|
||||
dol_offset = bootbin.dol_offset()
|
||||
logging.debug(f"{sys_path / 'boot.dol'} -> {iso_path}(0x{dol_offset:x}:0x{dol_offset + (sys_path / 'boot.dol').stat().st_size:x})")
|
||||
iso_file.seek( dol_offset )
|
||||
iso_file.write( (sys_path / "boot.dol").read_bytes() )
|
||||
|
||||
# Now parse fst.bin for writing files in the iso
|
||||
dir_id_path = {0: folder_path / "root"}
|
||||
currentdir_path = folder_path / "root"
|
||||
|
||||
# root: id=0 so nextdir is the end
|
||||
nextdir = int.from_bytes(fstbin_data[8:12], "big", signed=False)
|
||||
# offset of filenames block
|
||||
base_names = nextdir * 12
|
||||
# go to parent when id reach next dir
|
||||
nextdir_arr = [ nextdir ]
|
||||
|
||||
# Check if there is new / removed files or dirs in the root folder
|
||||
if nextdir - 1 != len(list(currentdir_path.glob("**/*"))):
|
||||
raise Exception(f"Error - Invalid file count inside {currentdir_path}. Use --rebuild-fst to update the FST before packing.")
|
||||
|
||||
for id in range(1, base_names // 12):
|
||||
i = id * 12
|
||||
file_type = int.from_bytes(fstbin_data[i:i+1], "big", signed=False)
|
||||
name = fstbin_data[base_names + int.from_bytes(fstbin_data[i+1:i+4], "big", signed=False):].split(b"\x00")[0].decode("utf-8")
|
||||
|
||||
while id == nextdir_arr[-1]:
|
||||
currentdir_path = currentdir_path.parent
|
||||
nextdir_arr.pop()
|
||||
|
||||
if file_type == FstTree.TYPE_DIR:
|
||||
nextdir = int.from_bytes(fstbin_data[i+8:i+12], "big", signed=False)
|
||||
parentdir = int.from_bytes(fstbin_data[i+4:i+8], "big", signed=False)
|
||||
|
||||
nextdir_arr.append( nextdir )
|
||||
currentdir_path = dir_id_path[parentdir] / name
|
||||
dir_id_path[id] = currentdir_path
|
||||
currentdir_path.mkdir(exist_ok=True)
|
||||
else:
|
||||
file_offset = int.from_bytes(fstbin_data[i+4:i+8], "big", signed=False)
|
||||
file_len = int.from_bytes(fstbin_data[i+8:i+12], "big", signed=False)
|
||||
|
||||
if (currentdir_path / name).stat().st_size != file_len:
|
||||
raise Exception(f"Error - Invalid file size: {currentdir_path / name} - use --rebuild-fst before packing files in the iso.")
|
||||
logging.debug(f"{currentdir_path / name} -> {iso_path}(0x{file_offset:x}:0x{file_offset + file_len:x})")
|
||||
iso_file.seek(file_offset)
|
||||
iso_file.write( (currentdir_path / name).read_bytes() )
|
||||
def rebuild_fst(self, folder_path:Path, align:int):
|
||||
root_path = folder_path / "root"
|
||||
sys_path = folder_path / "sys"
|
||||
|
||||
dol_offset = align_offset(Gcm.APPLOADER_OFFSET + (sys_path / "apploader.img").stat().st_size, align)
|
||||
logging.info(f"Patching {Path('sys/boot.bin')} offset 0x{BootBin.DOLOFFSET_OFFSET:x} with new dol offset (0x{dol_offset:x})")
|
||||
bootbin = BootBin((sys_path / "boot.bin").read_bytes())
|
||||
bootbin.set_dol_offset(dol_offset)
|
||||
|
||||
fst_offset = align_offset(dol_offset + (sys_path / "boot.dol").stat().st_size, align)
|
||||
logging.info(f"Patching {Path('sys/boot.bin')} offset 0x{BootBin.FSTOFFSET_OFFSET:x} with new FST offset (0x{fst_offset:x})")
|
||||
bootbin.set_fst_offset(fst_offset)
|
||||
|
||||
fst_tree = FstTree(root_path, fst_offset, align=align)
|
||||
|
||||
# Sorting paths approach original fst sort, but in original fst specials chars are after and not before chars
|
||||
path_list = sorted([path for path in root_path.glob('**/*')], key=lambda s:Path(str(s).upper()))
|
||||
for path in path_list:
|
||||
fst_tree.add_node_by_path(path)
|
||||
logging.debug(fst_tree)
|
||||
|
||||
fst_path = sys_path / "fst.bin"
|
||||
|
||||
logging.info(f"Writing fst in {Path('sys/fst.bin')}")
|
||||
fst_path.write_bytes( fst_tree.generate_fst() )
|
||||
|
||||
fst_size = fst_path.stat().st_size
|
||||
logging.info(f"Patching {Path('sys/boot.bin')} offset 0x{BootBin.FSTLEN_OFFSET:x} with new FST size (0x{fst_size:x})")
|
||||
bootbin.set_fst_len(fst_size)
|
||||
logging.info(f"Patching {Path('sys/boot.bin')} offset 0x{BootBin.MAXFSTLEN_OFFSET:x} with new FST max size (0x{fst_size:x})")
|
||||
bootbin.set_max_fst_len(fst_size)
|
||||
|
||||
(sys_path / "boot.bin").write_bytes(bootbin.data())
|
||||
def __get_sys_from_folder(self, file_path:Path):
|
||||
sys_path = file_path / "sys"
|
||||
bootbin = BootBin((sys_path / "boot.bin").read_bytes())
|
||||
apploader_size = (sys_path / "apploader.img").stat().st_size
|
||||
dol_len = (sys_path / "boot.dol").stat().st_size
|
||||
fstbin_data = (sys_path / "fst.bin").read_bytes()
|
||||
return (bootbin, apploader_size, dol_len, fstbin_data)
|
||||
def __get_sys_from_file(self, file_path:Path):
|
||||
bootbin = None
|
||||
apploader_size = None
|
||||
dol_len = None
|
||||
fstbin_data = None
|
||||
with file_path.open("rb") as iso_file:
|
||||
bootbin = BootBin(iso_file.read(BootBin.LEN))
|
||||
iso_file.seek(Gcm.APPLOADERSIZE_OFFSET)
|
||||
apploader_size = Gcm.APPLOADER_HEADER_LEN + int.from_bytes(iso_file.read(4), "big", signed=False) + int.from_bytes(iso_file.read(4), "big", signed=False)
|
||||
|
||||
dol = Dol()
|
||||
iso_file.seek( bootbin.dol_offset() )
|
||||
dol_len = dol.get_dol_len( iso_file.read(Dol.HEADER_LEN) )
|
||||
iso_file.seek( bootbin.fstbin_offset() )
|
||||
fstbin_data = iso_file.read(bootbin.fstbin_len())
|
||||
return (bootbin, apploader_size, dol_len, fstbin_data)
|
||||
def stats(self, path:Path, align:int = 4):
|
||||
(bootbin, apploader_size, dol_len, fstbin_data) = self.__get_sys_from_folder(path) if path.is_dir() else self.__get_sys_from_file(path)
|
||||
|
||||
# Begin offset - end offset - length - name
|
||||
mapping_lists = [
|
||||
[0, BootBin.LEN, f"{BootBin.LEN:08x}", "boot.bin"],
|
||||
[0x440, Gcm.APPLOADER_OFFSET, f"{Gcm.BI2BIN_LEN:08x}", "bi2.bin"],
|
||||
[Gcm.APPLOADER_OFFSET, Gcm.APPLOADER_OFFSET + apploader_size, f"{apploader_size:08x}", "apploader.img"],
|
||||
[bootbin.fstbin_offset(), bootbin.fstbin_offset() + bootbin.fstbin_len(), f"{bootbin.fstbin_len():08x}", "fst.bin"],
|
||||
[bootbin.dol_offset(), bootbin.dol_offset() + dol_len, f"{dol_len:08x}", "boot.dol"]]
|
||||
|
||||
dir_id_path = {0: Path(".")}
|
||||
currentdir_path = Path(".")
|
||||
|
||||
# root: id=0 so nextdir is the end
|
||||
nextdir = int.from_bytes(fstbin_data[8:12], "big", signed=False)
|
||||
# offset of filenames block
|
||||
base_names = nextdir * 12
|
||||
# go to parent when id reach next dir
|
||||
nextdir_arr = [ nextdir ]
|
||||
|
||||
for id in range(1, base_names // 12):
|
||||
i = id * 12
|
||||
file_type = int.from_bytes(fstbin_data[i:i+1], "big", signed=False)
|
||||
name = fstbin_data[base_names + int.from_bytes(fstbin_data[i+1:i+4], "big", signed=False):].split(b"\x00")[0].decode("utf-8")
|
||||
|
||||
while id == nextdir_arr[-1]:
|
||||
currentdir_path = currentdir_path.parent
|
||||
nextdir_arr.pop()
|
||||
|
||||
if file_type == FstTree.TYPE_DIR:
|
||||
nextdir = int.from_bytes(fstbin_data[i+8:i+12], "big", signed=False)
|
||||
parentdir = int.from_bytes(fstbin_data[i+4:i+8], "big", signed=False)
|
||||
|
||||
nextdir_arr.append( nextdir )
|
||||
currentdir_path = dir_id_path[parentdir] / name
|
||||
dir_id_path[id] = currentdir_path
|
||||
else:
|
||||
fileoffset = int.from_bytes(fstbin_data[i+4:i+8], "big", signed=False)
|
||||
filesize = int.from_bytes(fstbin_data[i+8:i+12], "big", signed=False)
|
||||
mapping_lists.append( [fileoffset, fileoffset + filesize, f"{filesize:08x}", str(currentdir_path / name)] )
|
||||
|
||||
mapping_lists.sort(key=lambda x: x[0])
|
||||
|
||||
empty_space_tuples = []
|
||||
last_offset = 0
|
||||
for i in range(len(mapping_lists)):
|
||||
if last_offset < mapping_lists[i][0]:
|
||||
empty_space_tuples.append( (f"{last_offset:08x}", f"{mapping_lists[i][0]:08x}", f"{mapping_lists[i][0] - last_offset:08x}", "") )
|
||||
elif last_offset > mapping_lists[i][0]:
|
||||
raise Exception(f"Error - Bad align ({align})! Offsets collision.")
|
||||
last_offset = align_offset(mapping_lists[i][1], align)
|
||||
mapping_lists[i][0] = f"{mapping_lists[i][0]:08x}"
|
||||
mapping_lists[i][1] = f"{mapping_lists[i][1]:08x}"
|
||||
|
||||
print(f"# Stats for \"{path}\":")
|
||||
self.__print("Global memory mapping:", mapping_lists)
|
||||
self.__print(f"Empty spaces (align={align}):", empty_space_tuples)
|
||||
def __print(self, title:str, lines_tuples):#, columns:list = list(range(3))):
|
||||
stats_buffer = "#"*70+f"\n# {title}\n"+"#"*70+"\n| b offset | e offset | length | Name\n|"+"-"*69+"\n"
|
||||
for line in lines_tuples:
|
||||
stats_buffer += "| "+" | ".join(line)+"\n"
|
||||
print(stats_buffer, end='')
|
||||
|
||||
|
||||
def get_argparser():
|
||||
import argparse
|
||||
parser = argparse.ArgumentParser(description='ISO/GCM 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('-a', '--align', type=int, help='-a=10: alignment of files in the GCM ISO (default value is 4)', default=4)
|
||||
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.iso): Pack source_folder in new file source_folder.iso or dest_file.iso if specified")
|
||||
group.add_argument('-u', '--unpack', action='store_true', help="-u source_iso.iso (dest_folder): Unpack the GCM/ISO in new folder source_iso or dest_folder if specified")
|
||||
group.add_argument('-s', '--stats', action='store_true', help="-s source_iso.iso or source_folder: Get stats about GCM, FST, memory, lengths and offsets.")
|
||||
group.add_argument('-r', '--rebuild-fst', action='store_true', help="-r game_folder: Rebuild the game_folder/sys/fst.bin using files in game_folder/root")
|
||||
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)
|
||||
|
||||
gcm = Gcm()
|
||||
if args.verbose:
|
||||
logging.getLogger().setLevel(logging.DEBUG)
|
||||
|
||||
if args.pack:
|
||||
logging.info("### Pack in new GCM iso")
|
||||
if(p_output == Path(".")):
|
||||
p_output = Path(p_input.with_suffix(".iso"))
|
||||
logging.info(f"packing folder \"{p_input}\" in \"{p_output}\"")
|
||||
gcm.pack(p_input, p_output)
|
||||
elif args.unpack:
|
||||
logging.info("### Unpack GCM iso in new folder")
|
||||
gcm.unpack(p_input, p_output)
|
||||
elif args.stats:
|
||||
gcm.stats(p_input)
|
||||
elif args.rebuild_fst:
|
||||
logging.info("### Rebuilding FST and patching boot.bin")
|
||||
if args.align < 1:
|
||||
raise Exception("Error - Align must be > 0.")
|
||||
logging.info(f"Using alignment: {args.align}")
|
||||
gcm.rebuild_fst(p_input, args.align)
|
||||
Loading…
Reference in New Issue
Block a user