# -*- coding: utf-8 -*- import asyncio import datetime import hashlib import hmac import json import logging import random import re from typing import * import aiohttp import cachetools import tornado.web import api.base import config import utils.request logger = logging.getLogger(__name__) START_GAME_OPEN_LIVE_URL = 'https://live-open.biliapi.com/v2/app/start' END_GAME_OPEN_LIVE_URL = 'https://live-open.biliapi.com/v2/app/end' GAME_HEARTBEAT_OPEN_LIVE_URL = 'https://live-open.biliapi.com/v2/app/heartbeat' COMMON_SERVER_BASE_URL = 'https://chat.bilisc.com' START_GAME_COMMON_SERVER_URL = COMMON_SERVER_BASE_URL + '/api/internal/open_live/start_game' END_GAME_COMMON_SERVER_URL = COMMON_SERVER_BASE_URL + '/api/internal/open_live/end_game' GAME_HEARTBEAT_COMMON_SERVER_URL = COMMON_SERVER_BASE_URL + '/api/internal/open_live/game_heartbeat' _error_auth_code_cache = cachetools.LRUCache(256) class TransportError(Exception): """网络错误或HTTP状态码错误""" class BusinessError(Exception): """业务返回码错误""" def __init__(self, data: dict): super().__init__(f"code={data['code']}, message={data['message']}, request_id={data['request_id']}") self.data = data @property def code(self) -> int: return self.data['code'] async def request_open_live_or_common_server(open_live_url, common_server_url, body: dict) -> dict: """如果配置了开放平台，则直接请求，否则转发请求到公共服务器的内部接口""" cfg = config.get_config() if cfg.is_open_live_configured: return await _request_open_live(open_live_url, body) try: req_ctx_mgr = utils.request.http_session.post(common_server_url, json=body) return await _read_response(req_ctx_mgr) except TransportError: logger.exception('Request common server failed:') raise except BusinessError as e: logger.warning('Request common server failed: %s', e) raise async def _request_open_live(url, body: dict) -> dict: cfg = config.get_config() assert cfg.is_open_live_configured # 输错身份码的人太多了，屏蔽掉明显错误的请求，防止B站抱怨 if url == START_GAME_OPEN_LIVE_URL: auth_code = body.get('code', '') _validate_auth_code(auth_code) else: auth_code = '' body_bytes = json.dumps(body).encode('utf-8') headers = { 'x-bili-accesskeyid': cfg.open_live_access_key_id, 'x-bili-content-md5': hashlib.md5(body_bytes).hexdigest(), 'x-bili-signature-method': 'HMAC-SHA256', 'x-bili-signature-nonce': str(random.randint(0, 999999999)), 'x-bili-signature-version': '1.0', 'x-bili-timestamp': str(int(datetime.datetime.now().timestamp())), } str_to_sign = '\n'.join( f'{key}:{value}' for key, value in headers.items() ) signature = hmac.new( cfg.open_live_access_key_secret.encode('utf-8'), str_to_sign.encode('utf-8'), hashlib.sha256 ).hexdigest() headers['Authorization'] = signature headers['Content-Type'] = 'application/json' headers['Accept'] = 'application/json' try: req_ctx_mgr = utils.request.http_session.post(url, headers=headers, data=body_bytes) return await _read_response(req_ctx_mgr) except TransportError: logger.exception('Request open live failed:') raise except BusinessError as e: logger.warning('Request open live failed: %s', e) if e.code == 7007: _error_auth_code_cache[auth_code] = True raise async def _read_response(req_ctx_mgr: AsyncContextManager[aiohttp.ClientResponse]) -> dict: try: async with req_ctx_mgr as r: r.raise_for_status() data = await r.json() code = data['code'] if code != 0: raise BusinessError(data) return data except (aiohttp.ClientError, asyncio.TimeoutError) as e: raise TransportError(f'{type(e).__name__}: {e}') def _validate_auth_code(auth_code): if ( auth_code in _error_auth_code_cache # 我也不知道是不是一定是这个格式，先这么处理 or not re.fullmatch(r'[0-9A-Z]{12,14}', auth_code) ): raise BusinessError({ 'code': 7007, 'message': 'oi！oi！oi！你的身份码错误了！别再重试了！！！！！！！！！！', 'request_id': '0', 'data': None }) class _OpenLiveHandlerBase(api.base.ApiHandler): def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.res: Optional[dict] = None def prepare(self): super().prepare() if not isinstance(self.json_args, dict): raise tornado.web.MissingArgumentError('body') if 'app_id' in self.json_args: cfg = config.get_config() self.json_args['app_id'] = cfg.open_live_app_id logger.info('client=%s requesting open live, cls=%s', self.request.remote_ip, type(self).__name__) class _PublicHandlerBase(_OpenLiveHandlerBase): """外部接口，如果配置了开放平台，则直接请求，否则转发请求到公共服务器的内部接口""" _OPEN_LIVE_URL: str _COMMON_SERVER_URL: str async def post(self): try: self.res = await request_open_live_or_common_server( self._OPEN_LIVE_URL, self._COMMON_SERVER_URL, self.json_args ) except TransportError: raise tornado.web.HTTPError(500) except BusinessError as e: self.res = e.data self.write(self.res) class _PrivateHandlerBase(_OpenLiveHandlerBase): """内部接口，如果配置了开放平台，则直接请求，否则响应错误""" _OPEN_LIVE_URL: str async def post(self): cfg = config.get_config() if not cfg.is_open_live_configured: raise tornado.web.HTTPError(501) try: self.res = await _request_open_live(self._OPEN_LIVE_URL, self.json_args) except TransportError: raise tornado.web.HTTPError(500) except BusinessError as e: self.res = e.data self.write(self.res) class _StartGameMixin(_OpenLiveHandlerBase): _OPEN_LIVE_URL = START_GAME_OPEN_LIVE_URL _COMMON_SERVER_URL = START_GAME_COMMON_SERVER_URL async def post(self): await super().post() # noqa if self.res is None: return try: room_id = self.res['data']['anchor_info']['room_id'] except (TypeError, KeyError): room_id = None code = self.res['code'] logger.info('room_id=%s start game res: %s %s', room_id, code, self.res['message']) if code == 7007: # 身份码错误 # 让我看看是哪个混蛋把房间ID、UID当做身份码 logger.info('Auth code error! auth_code=%s', self.json_args.get('code', None)) class StartGamePublicHandler(_StartGameMixin, _PublicHandlerBase): pass class StartGamePrivateHandler(_StartGameMixin, _PrivateHandlerBase): pass class EndGamePublicHandler(_PublicHandlerBase): _OPEN_LIVE_URL = END_GAME_OPEN_LIVE_URL _COMMON_SERVER_URL = END_GAME_COMMON_SERVER_URL class EndGamePrivateHandler(_PrivateHandlerBase): _OPEN_LIVE_URL = END_GAME_OPEN_LIVE_URL class GameHeartbeatPublicHandler(_PublicHandlerBase): _OPEN_LIVE_URL = GAME_HEARTBEAT_OPEN_LIVE_URL _COMMON_SERVER_URL = GAME_HEARTBEAT_COMMON_SERVER_URL class GameHeartbeatPrivateHandler(_PrivateHandlerBase): _OPEN_LIVE_URL = GAME_HEARTBEAT_OPEN_LIVE_URL ROUTES = [ (r'/api/open_live/start_game', StartGamePublicHandler), (r'/api/internal/open_live/start_game', StartGamePrivateHandler), (r'/api/open_live/end_game', EndGamePublicHandler), (r'/api/internal/open_live/end_game', EndGamePrivateHandler), (r'/api/open_live/game_heartbeat', GameHeartbeatPublicHandler), (r'/api/internal/open_live/game_heartbeat', GameHeartbeatPrivateHandler), ]