267 lines
9.7 KiB
Python
267 lines
9.7 KiB
Python
from starlette.requests import Request
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from starlette.routing import Route
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from starlette.responses import Response
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import json
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import inflection
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import yaml
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import string
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import logging
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import coloredlogs
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import zlib
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from logging.handlers import TimedRotatingFileHandler
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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, List
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from core.config import CoreConfig
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from core.utils import Utils
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from core.title import BaseServlet
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from .config import OngekiConfig
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from .const import OngekiConstants
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from .base import OngekiBase
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from .plus import OngekiPlus
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from .summer import OngekiSummer
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from .summerplus import OngekiSummerPlus
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from .red import OngekiRed
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from .redplus import OngekiRedPlus
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from .bright import OngekiBright
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from .brightmemory import OngekiBrightMemory
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class OngekiServlet(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.game_cfg = OngekiConfig()
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self.hash_table: Dict[Dict[str, str]] = {}
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if path.exists(f"{cfg_dir}/{OngekiConstants.CONFIG_NAME}"):
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self.game_cfg.update(
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yaml.safe_load(open(f"{cfg_dir}/{OngekiConstants.CONFIG_NAME}"))
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)
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self.versions = [
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OngekiBase(core_cfg, self.game_cfg),
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OngekiPlus(core_cfg, self.game_cfg),
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OngekiSummer(core_cfg, self.game_cfg),
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OngekiSummerPlus(core_cfg, self.game_cfg),
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OngekiRed(core_cfg, self.game_cfg),
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OngekiRedPlus(core_cfg, self.game_cfg),
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OngekiBright(core_cfg, self.game_cfg),
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OngekiBrightMemory(core_cfg, self.game_cfg),
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]
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self.logger = logging.getLogger("ongeki")
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if not hasattr(self.logger, "inited"):
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log_fmt_str = "[%(asctime)s] Ongeki | %(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, "ongeki"),
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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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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 = [
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method
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for method in dir(self.versions[version])
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if not method.startswith("__")
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]
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for method in method_list:
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method_fixed = inflection.camelize(method)[6:-7]
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# number of iterations is 64 on Bright Memory
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iter_count = 64
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hash = PBKDF2(
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method_fixed,
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bytes.fromhex(keys[2]),
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128,
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count=iter_count,
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hmac_hash_module=SHA1,
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)
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hashed_name = hash.hex()[:32] # truncate unused bytes like the game does
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self.hash_table[version][hashed_name] = method_fixed
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self.logger.debug(
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f"Hashed v{version} method {method_fixed} with {bytes.fromhex(keys[2])} to get {hash.hex()[:32]}"
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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 = OngekiConfig()
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if path.exists(f"{cfg_dir}/{OngekiConstants.CONFIG_NAME}"):
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game_cfg.update(
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yaml.safe_load(open(f"{cfg_dir}/{OngekiConstants.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_routes(self) -> List[Route]:
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return [
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Route("/SDDT/{version:int}/{endpoint:str}", self.render_POST, methods=['POST'])
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]
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def get_allnet_info(self, game_code: str, game_ver: int, keychip: str) -> Tuple[str, str]:
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title_port_int = Utils.get_title_port(self.core_cfg)
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title_port_ssl_int = Utils.get_title_port_ssl(self.core_cfg)
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proto = "https" if self.game_cfg.server.use_https and game_ver >= 120 else "http"
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if proto == "https":
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t_port = f":{title_port_ssl_int}" if title_port_ssl_int != 443 else ""
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else:
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t_port = f":{title_port_int}" if title_port_int != 80 else ""
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return (
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f"{proto}://{self.core_cfg.server.hostname}{t_port}/{game_code}/{game_ver}/",
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f"{self.core_cfg.server.hostname}{t_port}/",
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)
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async def render_POST(self, request: Request) -> bytes:
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endpoint: str = request.path_params.get('endpoint', '')
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version: int = request.path_params.get('version', 0)
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if endpoint.lower() == "ping":
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return Response(zlib.compress(b'{"returnCode": 1}'))
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req_raw = await request.body()
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encrtped = False
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internal_ver = 0
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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 = OngekiConstants.VER_ONGEKI
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elif version >= 105 and version < 110: # Plus
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internal_ver = OngekiConstants.VER_ONGEKI_PLUS
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elif version >= 110 and version < 115: # Summer
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internal_ver = OngekiConstants.VER_ONGEKI_SUMMER
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elif version >= 115 and version < 120: # Summer Plus
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internal_ver = OngekiConstants.VER_ONGEKI_SUMMER_PLUS
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elif version >= 120 and version < 125: # Red
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internal_ver = OngekiConstants.VER_ONGEKI_RED
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elif version >= 125 and version < 130: # Red Plus
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internal_ver = OngekiConstants.VER_ONGEKI_RED_PLUS
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elif version >= 130 and version < 135: # Bright
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internal_ver = OngekiConstants.VER_ONGEKI_BRIGHT
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elif version >= 135 and version < 145: # Bright Memory
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internal_ver = OngekiConstants.VER_ONGEKI_BRIGHT_MEMORY
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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 not in self.hash_table:
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self.logger.error(
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f"v{version} does not support encryption or no keys entered"
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)
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return Response(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(
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f"No hash found for v{version} endpoint {endpoint}"
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)
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return Response(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 Response(zlib.compress(b'{"stat": "0"}'))
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encrtped = True
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if (
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not encrtped
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and self.game_cfg.crypto.encrypted_only
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and version >= 120
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):
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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 Response(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 Response(zlib.compress(b'{"stat": "0"}'))
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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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if not hasattr(self.versions[internal_ver], func_to_find):
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self.logger.warning(f"Unhandled v{version} request {endpoint}")
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return Response(zlib.compress(b'{"returnCode": 1}'))
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try:
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handler = getattr(self.versions[internal_ver], func_to_find)
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resp = await 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 Response(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 or version < 120:
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return Response(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 Response(crypt.encrypt(padded)) |