mirror of
https://github.com/xfgryujk/blivechat.git
synced 2024-12-27 13:20:29 +08:00
246 lines
7.9 KiB
Python
246 lines
7.9 KiB
Python
# -*- coding: utf-8 -*-
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import asyncio
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import datetime
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import hashlib
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import hmac
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import json
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import logging
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import random
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import re
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from typing import *
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import aiohttp
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import cachetools
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import tornado.web
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import api.base
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import config
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import utils.request
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logger = logging.getLogger(__name__)
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START_GAME_OPEN_LIVE_URL = 'https://live-open.biliapi.com/v2/app/start'
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END_GAME_OPEN_LIVE_URL = 'https://live-open.biliapi.com/v2/app/end'
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GAME_HEARTBEAT_OPEN_LIVE_URL = 'https://live-open.biliapi.com/v2/app/heartbeat'
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COMMON_SERVER_BASE_URL = 'https://chat.bilisc.com'
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START_GAME_COMMON_SERVER_URL = COMMON_SERVER_BASE_URL + '/api/internal/open_live/start_game'
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END_GAME_COMMON_SERVER_URL = COMMON_SERVER_BASE_URL + '/api/internal/open_live/end_game'
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GAME_HEARTBEAT_COMMON_SERVER_URL = COMMON_SERVER_BASE_URL + '/api/internal/open_live/game_heartbeat'
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_error_auth_code_cache = cachetools.LRUCache(256)
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class TransportError(Exception):
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"""网络错误或HTTP状态码错误"""
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class BusinessError(Exception):
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"""业务返回码错误"""
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def __init__(self, data: dict):
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super().__init__(f"code={data['code']}, message={data['message']}, request_id={data['request_id']}")
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self.data = data
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@property
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def code(self) -> int:
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return self.data['code']
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async def request_open_live_or_common_server(open_live_url, common_server_url, body: dict) -> dict:
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"""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"""
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cfg = config.get_config()
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if cfg.is_open_live_configured:
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return await _request_open_live(open_live_url, body)
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try:
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req_ctx_mgr = utils.request.http_session.post(common_server_url, json=body)
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return await _read_response(req_ctx_mgr)
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except TransportError:
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logger.exception('Request common server failed:')
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raise
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except BusinessError as e:
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logger.warning('Request common server failed: %s', e)
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raise
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async def _request_open_live(url, body: dict) -> dict:
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cfg = config.get_config()
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assert cfg.is_open_live_configured
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# 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
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if url == START_GAME_OPEN_LIVE_URL:
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auth_code = body.get('code', '')
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_validate_auth_code(auth_code)
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else:
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auth_code = ''
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body_bytes = json.dumps(body).encode('utf-8')
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headers = {
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'x-bili-accesskeyid': cfg.open_live_access_key_id,
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'x-bili-content-md5': hashlib.md5(body_bytes).hexdigest(),
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'x-bili-signature-method': 'HMAC-SHA256',
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'x-bili-signature-nonce': str(random.randint(0, 999999999)),
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'x-bili-signature-version': '1.0',
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'x-bili-timestamp': str(int(datetime.datetime.now().timestamp())),
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}
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str_to_sign = '\n'.join(
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f'{key}:{value}'
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for key, value in headers.items()
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)
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signature = hmac.new(
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cfg.open_live_access_key_secret.encode('utf-8'), str_to_sign.encode('utf-8'), hashlib.sha256
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).hexdigest()
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headers['Authorization'] = signature
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headers['Content-Type'] = 'application/json'
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headers['Accept'] = 'application/json'
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try:
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req_ctx_mgr = utils.request.http_session.post(url, headers=headers, data=body_bytes)
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return await _read_response(req_ctx_mgr)
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except TransportError:
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logger.exception('Request open live failed:')
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raise
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except BusinessError as e:
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logger.warning('Request open live failed: %s', e)
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if e.code == 7007:
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_error_auth_code_cache[auth_code] = True
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raise
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async def _read_response(req_ctx_mgr: AsyncContextManager[aiohttp.ClientResponse]) -> dict:
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try:
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async with req_ctx_mgr as r:
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r.raise_for_status()
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data = await r.json()
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code = data['code']
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if code != 0:
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raise BusinessError(data)
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return data
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except (aiohttp.ClientError, asyncio.TimeoutError) as e:
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raise TransportError(f'{type(e).__name__}: {e}')
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def _validate_auth_code(auth_code):
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if (
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auth_code in _error_auth_code_cache
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# 我也不知道是不是一定是这个格式，先这么处理
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or not re.fullmatch(r'[0-9A-Z]{12,14}', auth_code)
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):
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raise BusinessError({
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'code': 7007,
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'message': 'oi！oi！oi！你的身份码错误了！别再重试了！！！！！！！！！！',
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'request_id': '0',
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'data': None
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})
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class _OpenLiveHandlerBase(api.base.ApiHandler):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.res: Optional[dict] = None
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def prepare(self):
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super().prepare()
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if not isinstance(self.json_args, dict):
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raise tornado.web.MissingArgumentError('body')
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if 'app_id' in self.json_args:
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cfg = config.get_config()
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self.json_args['app_id'] = cfg.open_live_app_id
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logger.info('client=%s requesting open live, cls=%s', self.request.remote_ip, type(self).__name__)
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class _PublicHandlerBase(_OpenLiveHandlerBase):
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"""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"""
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_OPEN_LIVE_URL: str
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_COMMON_SERVER_URL: str
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async def post(self):
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try:
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self.res = await request_open_live_or_common_server(
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self._OPEN_LIVE_URL, self._COMMON_SERVER_URL, self.json_args
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)
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except TransportError:
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raise tornado.web.HTTPError(500)
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except BusinessError as e:
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self.res = e.data
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self.write(self.res)
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class _PrivateHandlerBase(_OpenLiveHandlerBase):
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"""内部接口，如果配置了开放平台，则直接请求，否则响应错误"""
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_OPEN_LIVE_URL: str
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async def post(self):
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cfg = config.get_config()
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if not cfg.is_open_live_configured:
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raise tornado.web.HTTPError(501)
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try:
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self.res = await _request_open_live(self._OPEN_LIVE_URL, self.json_args)
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except TransportError:
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raise tornado.web.HTTPError(500)
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except BusinessError as e:
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self.res = e.data
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self.write(self.res)
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class _StartGameMixin(_OpenLiveHandlerBase):
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_OPEN_LIVE_URL = START_GAME_OPEN_LIVE_URL
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_COMMON_SERVER_URL = START_GAME_COMMON_SERVER_URL
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async def post(self):
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await super().post() # noqa
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if self.res is None:
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return
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try:
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room_id = self.res['data']['anchor_info']['room_id']
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except (TypeError, KeyError):
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room_id = None
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code = self.res['code']
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logger.info('room_id=%s start game res: %s %s', room_id, code, self.res['message'])
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if code == 7007:
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# 身份码错误
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# 让我看看是哪个混蛋把房间ID、UID当做身份码
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logger.info('Auth code error! auth_code=%s', self.json_args.get('code', None))
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class StartGamePublicHandler(_StartGameMixin, _PublicHandlerBase):
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pass
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class StartGamePrivateHandler(_StartGameMixin, _PrivateHandlerBase):
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pass
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class EndGamePublicHandler(_PublicHandlerBase):
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_OPEN_LIVE_URL = END_GAME_OPEN_LIVE_URL
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_COMMON_SERVER_URL = END_GAME_COMMON_SERVER_URL
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class EndGamePrivateHandler(_PrivateHandlerBase):
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_OPEN_LIVE_URL = END_GAME_OPEN_LIVE_URL
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class GameHeartbeatPublicHandler(_PublicHandlerBase):
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_OPEN_LIVE_URL = GAME_HEARTBEAT_OPEN_LIVE_URL
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_COMMON_SERVER_URL = GAME_HEARTBEAT_COMMON_SERVER_URL
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class GameHeartbeatPrivateHandler(_PrivateHandlerBase):
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_OPEN_LIVE_URL = GAME_HEARTBEAT_OPEN_LIVE_URL
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ROUTES = [
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(r'/api/open_live/start_game', StartGamePublicHandler),
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(r'/api/internal/open_live/start_game', StartGamePrivateHandler),
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(r'/api/open_live/end_game', EndGamePublicHandler),
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(r'/api/internal/open_live/end_game', EndGamePrivateHandler),
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(r'/api/open_live/game_heartbeat', GameHeartbeatPublicHandler),
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(r'/api/internal/open_live/game_heartbeat', GameHeartbeatPrivateHandler),
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]
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