213 lines
8.5 KiB
Python
213 lines
8.5 KiB
Python
# TODO: convert this into a system like AutoWorld
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import bsdiff4
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import yaml
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import os
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import lzma
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import threading
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import concurrent.futures
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import zipfile
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import sys
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from typing import Tuple, Optional
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import Utils
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current_patch_version = 3
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GAME_ALTTP = "A Link to the Past"
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GAME_SM = "Super Metroid"
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GAME_SOE = "Secret of Evermore"
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supported_games = {"A Link to the Past", "Super Metroid", "Secret of Evermore"}
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preferred_endings = {
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GAME_ALTTP: "apbp",
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GAME_SM: "apm3",
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GAME_SOE: "apsoe"
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}
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def generate_yaml(patch: bytes, metadata: Optional[dict] = None, game: str = GAME_ALTTP) -> bytes:
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if game == GAME_ALTTP:
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from worlds.alttp.Rom import JAP10HASH as HASH
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elif game == GAME_SM:
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from worlds.sm.Rom import JAP10HASH as HASH
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elif game == GAME_SOE:
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from worlds.soe.Patch import USHASH as HASH
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else:
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raise RuntimeError(f"Selected game {game} for base rom not found.")
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patch = yaml.dump({"meta": metadata,
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"patch": patch,
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"game": game,
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# minimum version of patch system expected for patching to be successful
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"compatible_version": 3,
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"version": current_patch_version,
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"base_checksum": HASH})
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return patch.encode(encoding="utf-8-sig")
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def generate_patch(rom: bytes, metadata: Optional[dict] = None, game: str = GAME_ALTTP) -> bytes:
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if metadata is None:
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metadata = {}
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patch = bsdiff4.diff(get_base_rom_data(game), rom)
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return generate_yaml(patch, metadata, game)
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def create_patch_file(rom_file_to_patch: str, server: str = "", destination: str = None,
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player: int = 0, player_name: str = "", game: str = GAME_ALTTP) -> str:
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meta = {"server": server, # allow immediate connection to server in multiworld. Empty string otherwise
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"player_id": player,
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"player_name": player_name}
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bytes = generate_patch(load_bytes(rom_file_to_patch),
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meta,
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game)
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target = destination if destination else os.path.splitext(rom_file_to_patch)[0] + (
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".apbp" if game == GAME_ALTTP else ".apm3")
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write_lzma(bytes, target)
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return target
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def create_rom_bytes(patch_file: str, ignore_version: bool = False) -> Tuple[dict, str, bytearray]:
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data = Utils.parse_yaml(lzma.decompress(load_bytes(patch_file)).decode("utf-8-sig"))
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game_name = data["game"]
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if not ignore_version and data["compatible_version"] > current_patch_version:
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raise RuntimeError("Patch file is incompatible with this patcher, likely an update is required.")
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patched_data = bsdiff4.patch(get_base_rom_data(game_name), data["patch"])
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rom_hash = patched_data[int(0x7FC0):int(0x7FD5)]
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data["meta"]["hash"] = "".join(chr(x) for x in rom_hash)
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target = os.path.splitext(patch_file)[0] + ".sfc"
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return data["meta"], target, patched_data
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def get_base_rom_data(game: str):
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if game == GAME_ALTTP:
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from worlds.alttp.Rom import get_base_rom_bytes
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elif game == "alttp": # old version for A Link to the Past
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from worlds.alttp.Rom import get_base_rom_bytes
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elif game == GAME_SM:
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from worlds.sm.Rom import get_base_rom_bytes
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elif game == GAME_SOE:
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file_name = Utils.get_options()["soe_options"]["rom_file"]
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get_base_rom_bytes = lambda: bytes(read_rom(open(file_name, "rb")))
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else:
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raise RuntimeError("Selected game for base rom not found.")
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return get_base_rom_bytes()
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def create_rom_file(patch_file: str) -> Tuple[dict, str]:
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data, target, patched_data = create_rom_bytes(patch_file)
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with open(target, "wb") as f:
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f.write(patched_data)
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return data, target
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def update_patch_data(patch_data: bytes, server: str = "") -> bytes:
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data = Utils.parse_yaml(lzma.decompress(patch_data).decode("utf-8-sig"))
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data["meta"]["server"] = server
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bytes = generate_yaml(data["patch"], data["meta"], data["game"])
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return lzma.compress(bytes)
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def load_bytes(path: str) -> bytes:
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with open(path, "rb") as f:
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return f.read()
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def write_lzma(data: bytes, path: str):
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with lzma.LZMAFile(path, 'wb') as f:
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f.write(data)
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def read_rom(stream, strip_header=True) -> bytearray:
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"""Reads rom into bytearray and optionally strips off any smc header"""
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buffer = bytearray(stream.read())
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if strip_header and len(buffer) % 0x400 == 0x200:
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return buffer[0x200:]
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return buffer
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if __name__ == "__main__":
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host = Utils.get_public_ipv4()
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options = Utils.get_options()['server_options']
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if options['host']:
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host = options['host']
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address = f"{host}:{options['port']}"
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ziplock = threading.Lock()
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print(f"Host for patches to be created is {address}")
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with concurrent.futures.ThreadPoolExecutor() as pool:
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for rom in sys.argv:
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try:
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if rom.endswith(".sfc"):
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print(f"Creating patch for {rom}")
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result = pool.submit(create_patch_file, rom, address)
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result.add_done_callback(lambda task: print(f"Created patch {task.result()}"))
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elif rom.endswith(".apbp"):
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print(f"Applying patch {rom}")
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data, target = create_rom_file(rom)
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romfile, adjusted = Utils.get_adjuster_settings(target)
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if adjusted:
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try:
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os.replace(romfile, target)
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romfile = target
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except Exception as e:
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print(e)
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print(f"Created rom {romfile if adjusted else target}.")
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if 'server' in data:
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Utils.persistent_store("servers", data['hash'], data['server'])
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print(f"Host is {data['server']}")
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elif rom.endswith(".apm3"):
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print(f"Applying patch {rom}")
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data, target = create_rom_file(rom)
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print(f"Created rom {target}.")
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if 'server' in data:
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Utils.persistent_store("servers", data['hash'], data['server'])
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print(f"Host is {data['server']}")
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elif rom.endswith(".archipelago"):
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import json
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import zlib
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with open(rom, 'rb') as fr:
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multidata = zlib.decompress(fr.read()).decode("utf-8")
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with open(rom + '.txt', 'w') as fw:
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fw.write(multidata)
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multidata = json.loads(multidata)
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for romname in multidata['roms']:
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Utils.persistent_store("servers", "".join(chr(byte) for byte in romname[2]), address)
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from Utils import get_options
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multidata["server_options"] = get_options()["server_options"]
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multidata = zlib.compress(json.dumps(multidata).encode("utf-8"), 9)
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with open(rom + "_updated.archipelago", 'wb') as f:
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f.write(multidata)
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elif rom.endswith(".zip"):
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print(f"Updating host in patch files contained in {rom}")
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def _handle_zip_file_entry(zfinfo: zipfile.ZipInfo, server: str):
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data = zfr.read(zfinfo)
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if zfinfo.filename.endswith(".apbp") or zfinfo.filename.endswith(".apm3"):
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data = update_patch_data(data, server)
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with ziplock:
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zfw.writestr(zfinfo, data)
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return zfinfo.filename
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futures = []
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with zipfile.ZipFile(rom, "r") as zfr:
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updated_zip = os.path.splitext(rom)[0] + "_updated.zip"
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with zipfile.ZipFile(updated_zip, "w", compression=zipfile.ZIP_DEFLATED,
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compresslevel=9) as zfw:
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for zfname in zfr.namelist():
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futures.append(pool.submit(_handle_zip_file_entry, zfr.getinfo(zfname), address))
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for future in futures:
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print(f"File {future.result()} added to {os.path.split(updated_zip)[1]}")
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except:
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import traceback
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traceback.print_exc()
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input("Press enter to close.") |