151 lines
5.6 KiB
Python
151 lines
5.6 KiB
Python
from typing import Tuple, Dict, List
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from twisted.web.http import Request
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import yaml
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import logging, coloredlogs
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from logging.handlers import TimedRotatingFileHandler
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from os import path
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from Crypto.Cipher import Blowfish
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from hashlib import md5
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import secrets
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from core import CoreConfig, Utils
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from core.title import BaseServlet
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from titles.sao.config import SaoConfig
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from titles.sao.const import SaoConstants
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from titles.sao.base import SaoBase
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from titles.sao.handlers.base import *
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class SaoServlet(BaseServlet):
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def __init__(self, core_cfg: CoreConfig, cfg_dir: str) -> None:
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super().__init__(core_cfg, cfg_dir)
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self.config_dir = cfg_dir
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self.game_cfg = SaoConfig()
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if path.exists(f"{cfg_dir}/sao.yaml"):
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self.game_cfg.update(yaml.safe_load(open(f"{cfg_dir}/sao.yaml")))
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self.logger = logging.getLogger("sao")
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if not hasattr(self.logger, "inited"):
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log_fmt_str = "[%(asctime)s] SAO | %(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, "sao"),
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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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self.base = SaoBase(core_cfg, self.game_cfg)
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self.static_hash = None
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if self.game_cfg.hash.verify_hash:
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self.static_hash = md5(self.game_cfg.hash.hash_base.encode()).digest() # Greate hashing guys, really validates the data
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def get_endpoint_matchers(self) -> Tuple[List[Tuple[str, str, Dict]], List[Tuple[str, str, Dict]]]:
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return (
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[],
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[("render_POST", "/{datecode}/proto/if/{category}/{endpoint}", {})]
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)
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@classmethod
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def is_game_enabled(cls, game_code: str, core_cfg: CoreConfig, cfg_dir: str) -> bool:
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game_cfg = SaoConfig()
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if path.exists(f"{cfg_dir}/{SaoConstants.CONFIG_NAME}"):
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game_cfg.update(
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yaml.safe_load(open(f"{cfg_dir}/{SaoConstants.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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return True
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def get_allnet_info(self, game_code: str, game_ver: int, keychip: str) -> Tuple[str, str]:
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if not self.core_cfg.server.is_using_proxy and Utils.get_title_port_ssl(self.core_cfg):
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return (
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f"https://{self.core_cfg.title.hostname}:{self.core_cfg.title.port_ssl}/",
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f"{self.core_cfg.title.hostname}/",
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)
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return (f"http://{self.core_cfg.title.hostname}:{self.core_cfg.title.port}/", "")
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def get_mucha_info(self, core_cfg: CoreConfig, cfg_dir: str) -> Tuple[bool, str]:
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if not self.game_cfg.server.enable:
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return (False, "")
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return (True, "SAO1")
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def render_POST(self, request: Request, game_code: str, matchers: Dict) -> bytes:
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endpoint = matchers.get('endpoint', '')
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request.responseHeaders.addRawHeader(b"content-type", b"text/html; charset=utf-8")
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iv = b""
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req_raw = request.content.read()
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sao_request = req_raw.hex()
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req_header = SaoRequestHeader(req_raw)
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cmd_str = f"{req_header.cmd:04x}"
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if self.game_cfg.hash.verify_hash and self.static_hash != req_header.hash:
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self.logger.error(f"Hash mismatch! Expecting {self.static_hash} but recieved {req_header.hash}")
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return b""
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if self.game_cfg.crypt.enable:
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iv = req_raw[40:48]
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cipher = Blowfish.new(self.game_cfg.crypt.key.encode(), Blowfish.MODE_CBC, iv)
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crypt_data = req_raw[48:]
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req_data = cipher.decrypt(crypt_data)
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self.logger.debug(f"Decrypted {req_data.hex()} with IV {iv.hex()}")
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else:
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req_data = req_raw[40:]
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handler = getattr(self.base, f"handle_{cmd_str}", self.base.handle_noop)
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self.logger.info(f"{endpoint} - {cmd_str} request")
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self.logger.debug(f"Request: {req_raw.hex()}")
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resp = handler(req_header, req_data)
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if resp is None:
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resp = SaoNoopResponse(req_header.cmd + 1).make()
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if type(resp) == bytes:
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pass
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elif issubclass(resp, SaoBaseResponse):
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resp = resp.make()
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else:
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self.logger.error(f"Unknown response type {type(resp)}")
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return b""
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self.logger.debug(f"Response: {resp.hex()}")
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if self.game_cfg.crypt.enable:
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iv = secrets.token_bytes(8)
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data_to_crypt = resp[24:]
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while len(data_to_crypt) % 8 != 0:
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data_to_crypt += b"\x00"
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cipher = Blowfish.new(self.game_cfg.crypt.key.encode(), Blowfish.MODE_CBC, iv)
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data_crypt = cipher.encrypt(data_to_crypt)
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crypt_data_len = len(data_crypt) + len(iv)
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tmp = struct.pack("!I", crypt_data_len) # does it want the length of the encrypted response??
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resp = resp[:20] + tmp + iv + data_crypt
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self.logger.debug(f"Encrypted Response: {resp.hex()}")
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return resp |