forked from Hay1tsme/artemis
253 lines
9.4 KiB
Python
253 lines
9.4 KiB
Python
from twisted.web.http import Request
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import logging, coloredlogs
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from logging.handlers import TimedRotatingFileHandler
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import zlib
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import yaml
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import json
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import inflection
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import string
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from Crypto.Cipher import AES
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from Crypto.Util.Padding import pad
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from Crypto.Protocol.KDF import PBKDF2
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from Crypto.Hash import SHA1
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from os import path
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from typing import Tuple, Dict
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from core import CoreConfig, Utils
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from titles.chuni.config import ChuniConfig
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from titles.chuni.const import ChuniConstants
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from titles.chuni.base import ChuniBase
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from titles.chuni.plus import ChuniPlus
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from titles.chuni.air import ChuniAir
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from titles.chuni.airplus import ChuniAirPlus
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from titles.chuni.star import ChuniStar
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from titles.chuni.starplus import ChuniStarPlus
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from titles.chuni.amazon import ChuniAmazon
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from titles.chuni.amazonplus import ChuniAmazonPlus
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from titles.chuni.crystal import ChuniCrystal
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from titles.chuni.crystalplus import ChuniCrystalPlus
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from titles.chuni.paradise import ChuniParadise
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from titles.chuni.new import ChuniNew
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from titles.chuni.newplus import ChuniNewPlus
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class ChuniServlet:
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def __init__(self, core_cfg: CoreConfig, cfg_dir: str) -> None:
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self.core_cfg = core_cfg
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self.game_cfg = ChuniConfig()
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self.hash_table: Dict[Dict[str, str]] = {}
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if path.exists(f"{cfg_dir}/{ChuniConstants.CONFIG_NAME}"):
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self.game_cfg.update(
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yaml.safe_load(open(f"{cfg_dir}/{ChuniConstants.CONFIG_NAME}"))
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)
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self.versions = [
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ChuniBase,
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ChuniPlus,
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ChuniAir,
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ChuniAirPlus,
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ChuniStar,
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ChuniStarPlus,
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ChuniAmazon,
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ChuniAmazonPlus,
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ChuniCrystal,
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ChuniCrystalPlus,
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ChuniParadise,
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ChuniNew,
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ChuniNewPlus,
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]
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for version, keys in self.game_cfg.crypto.keys.items():
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if len(keys) < 3:
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continue
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self.hash_table[version] = {}
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method_list = [method for method in dir(self.versions[version]) if not method.startswith('__')]
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for method in method_list:
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method_fixed = inflection.camelize(method)
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hash = PBKDF2(method_fixed, bytes.fromhex(keys[2]), 128, count=44, hmac_hash_module=SHA1)
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self.hash_table[version][hash.hex()] = method_fixed
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self.logger.debug(f"Hashed v{version} method {method_fixed} with {bytes.fromhex(keys[2])} to get {hash.hex()}")
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self.logger = logging.getLogger("chuni")
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if not hasattr(self.logger, "inited"):
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log_fmt_str = "[%(asctime)s] Chunithm | %(levelname)s | %(message)s"
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log_fmt = logging.Formatter(log_fmt_str)
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fileHandler = TimedRotatingFileHandler(
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"{0}/{1}.log".format(self.core_cfg.server.log_dir, "chuni"),
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encoding="utf8",
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when="d",
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backupCount=10,
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)
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fileHandler.setFormatter(log_fmt)
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consoleHandler = logging.StreamHandler()
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consoleHandler.setFormatter(log_fmt)
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self.logger.addHandler(fileHandler)
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self.logger.addHandler(consoleHandler)
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self.logger.setLevel(self.game_cfg.server.loglevel)
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coloredlogs.install(
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level=self.game_cfg.server.loglevel, logger=self.logger, fmt=log_fmt_str
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)
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self.logger.inited = True
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@classmethod
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def get_allnet_info(
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cls, game_code: str, core_cfg: CoreConfig, cfg_dir: str
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) -> Tuple[bool, str, str]:
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game_cfg = ChuniConfig()
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if path.exists(f"{cfg_dir}/{ChuniConstants.CONFIG_NAME}"):
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game_cfg.update(
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yaml.safe_load(open(f"{cfg_dir}/{ChuniConstants.CONFIG_NAME}"))
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)
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if not game_cfg.server.enable:
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return (False, "", "")
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if core_cfg.server.is_develop:
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return (
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True,
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f"http://{core_cfg.title.hostname}:{core_cfg.title.port}/{game_code}/$v/",
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"",
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)
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return (True, f"http://{core_cfg.title.hostname}/{game_code}/$v/", "")
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def render_POST(self, request: Request, version: int, url_path: str) -> bytes:
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if url_path.lower() == "ping":
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return zlib.compress(b'{"returnCode": "1"}')
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req_raw = request.content.getvalue()
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url_split = url_path.split("/")
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encrtped = False
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internal_ver = 0
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endpoint = url_split[len(url_split) - 1]
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client_ip = Utils.get_ip_addr(request)
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if version < 105: # 1.0
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internal_ver = ChuniConstants.VER_CHUNITHM
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elif version >= 105 and version < 110: # Plus
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internal_ver = ChuniConstants.VER_CHUNITHM_PLUS
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elif version >= 110 and version < 115: # Air
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internal_ver = ChuniConstants.VER_CHUNITHM_AIR
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elif version >= 115 and version < 120: # Air Plus
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internal_ver = ChuniConstants.VER_CHUNITHM_AIR_PLUS
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elif version >= 120 and version < 125: # Star
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internal_ver = ChuniConstants.VER_CHUNITHM_STAR
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elif version >= 125 and version < 130: # Star Plus
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internal_ver = ChuniConstants.VER_CHUNITHM_STAR_PLUS
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elif version >= 130 and version < 135: # Amazon
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internal_ver = ChuniConstants.VER_CHUNITHM_AMAZON
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elif version >= 135 and version < 140: # Amazon Plus
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internal_ver = ChuniConstants.VER_CHUNITHM_AMAZON_PLUS
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elif version >= 140 and version < 145: # Crystal
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internal_ver = ChuniConstants.VER_CHUNITHM_CRYSTAL
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elif version >= 145 and version < 150: # Crystal Plus
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internal_ver = ChuniConstants.VER_CHUNITHM_CRYSTAL_PLUS
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elif version >= 150 and version < 200: # Paradise
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internal_ver = ChuniConstants.VER_CHUNITHM_PARADISE
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elif version >= 200 and version < 205: # New
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internal_ver = ChuniConstants.VER_CHUNITHM_NEW
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elif version >= 205 and version < 210: # New Plus
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internal_ver = ChuniConstants.VER_CHUNITHM_NEW_PLUS
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if all(c in string.hexdigits for c in endpoint) and len(endpoint) == 32:
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# If we get a 32 character long hex string, it's a hash and we're
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# doing encrypted. The likelyhood of false positives is low but
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# technically not 0
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if internal_ver < ChuniConstants.VER_CHUNITHM_NEW:
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endpoint = request.getHeader("User-Agent").split("#")[0]
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else:
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if internal_ver not in self.hash_table:
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self.logger.error(f"v{version} does not support encryption or no keys entered")
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return zlib.compress(b'{"stat": "0"}')
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elif endpoint.lower() not in self.hash_table[internal_ver]:
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self.logger.error(f"No hash found for v{version} endpoint {endpoint}")
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return zlib.compress(b'{"stat": "0"}')
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endpoint = self.hash_table[internal_ver][endpoint.lower()]
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try:
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crypt = AES.new(
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bytes.fromhex(self.game_cfg.crypto.keys[internal_ver][0]),
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AES.MODE_CBC,
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bytes.fromhex(self.game_cfg.crypto.keys[internal_ver][1]),
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)
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req_raw = crypt.decrypt(req_raw)
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except Exception as e:
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self.logger.error(
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f"Failed to decrypt v{version} request to {endpoint} -> {e}"
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)
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return zlib.compress(b'{"stat": "0"}')
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encrtped = True
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if not encrtped and self.game_cfg.crypto.encrypted_only and internal_ver >= ChuniConstants.VER_CHUNITHM_CRYSTAL_PLUS:
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self.logger.error(
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f"Unencrypted v{version} {endpoint} request, but config is set to encrypted only: {req_raw}"
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)
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return zlib.compress(b'{"stat": "0"}')
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try:
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unzip = zlib.decompress(req_raw)
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except zlib.error as e:
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self.logger.error(
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f"Failed to decompress v{version} {endpoint} request -> {e}"
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)
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return b""
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req_data = json.loads(unzip)
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self.logger.info(
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f"v{version} {endpoint} request from {client_ip}"
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)
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self.logger.debug(req_data)
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func_to_find = "handle_" + inflection.underscore(endpoint) + "_request"
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handler_cls = self.versions[internal_ver](self.core_cfg, self.game_cfg)
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if not hasattr(handler_cls, func_to_find):
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self.logger.warning(f"Unhandled v{version} request {endpoint}")
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resp = {"returnCode": 1}
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else:
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try:
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handler = getattr(handler_cls, func_to_find)
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resp = handler(req_data)
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except Exception as e:
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self.logger.error(f"Error handling v{version} method {endpoint} - {e}")
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return zlib.compress(b'{"stat": "0"}')
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if resp == None:
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resp = {"returnCode": 1}
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self.logger.debug(f"Response {resp}")
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zipped = zlib.compress(json.dumps(resp, ensure_ascii=False).encode("utf-8"))
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if not encrtped:
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return zipped
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padded = pad(zipped, 16)
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crypt = AES.new(
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bytes.fromhex(self.game_cfg.crypto.keys[internal_ver][0]),
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AES.MODE_CBC,
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bytes.fromhex(self.game_cfg.crypto.keys[internal_ver][1]),
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)
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return crypt.encrypt(padded)
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