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"""账号凭证检测：静态 Cookie 分析 + IM 运行时校验"""
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import asyncio
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import json
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import logging
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from typing import Optional
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from rpa_engine.douyin_im.auth import DouyinAuth
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from rpa_engine.douyin_im.frontier import ensure_frontier_ws
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from rpa_engine.douyin_im.http_client import DouyinImHttpClient
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from rpa_engine.douyin_im.session import DouyinImSession
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from utils.cookie_store import analyze_cookie
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logger = logging.getLogger("credential")
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def _should_reset_credentials(assessment: dict) -> bool:
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"""凭证全面失效时需清空 Cookie/IM 数据并重新登录。"""
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if not assessment.get("has_cookie"):
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return False
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if not assessment.get("cookie_valid"):
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return True
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message = assessment.get("message") or ""
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# 仅缺 ticket/签名/浏览器采集 — 保留 Cookie，走浏览器补全即可
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if any(
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token in message
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for token in ("ticket", "签名密钥", "浏览器模式", "web_protect")
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):
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return False
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if (
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not assessment.get("im_ready")
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and not assessment.get("can_skip_browser")
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and assessment.get("has_sessionid")
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):
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return True
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return False
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def build_im_session_from_storage(
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storage: dict,
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saved_im_data: Optional[str] = None,
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) -> DouyinImSession:
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session = DouyinImSession.from_storage_state(storage or {})
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if saved_im_data:
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try:
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saved = DouyinImSession.from_dict(json.loads(saved_im_data))
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# 新粘贴的 storage_state（含真实 frontier_ws_url）优先；只有它没带时才用缓存的。
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if saved.ws_urls and not session.ws_urls:
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session.ws_urls = saved.ws_urls
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if saved.sdk_cert and not session.sdk_cert:
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session.sdk_cert = saved.sdk_cert
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if saved.frontier_ts_sign and not session.frontier_ts_sign:
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session.frontier_ts_sign = saved.frontier_ts_sign
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if saved.keys_str and not session.keys_str:
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session.keys_str = saved.keys_str
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if saved.web_protect_str and not session.web_protect_str:
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session.web_protect_str = saved.web_protect_str
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if saved.my_uid and not session.my_uid:
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session.my_uid = saved.my_uid
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if saved.device_id and not session.device_id:
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session.device_id = saved.device_id
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if saved.web_id and not session.web_id:
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session.web_id = saved.web_id
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if saved.conv_meta:
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session.conv_meta = {**saved.conv_meta, **session.conv_meta}
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except Exception:
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pass
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session.sanitize_ws_urls()
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# Keep this builder pure and non-blocking. Frontier discovery can perform
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# a synchronous network request (up to 15 seconds); callers that need it
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# already do so from validate_im_session() through asyncio.to_thread() and
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# the shared background-traffic limiter. Running it here made a large
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# batch freeze the FastAPI event loop before any limiter was acquired.
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return session
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def has_im_session_token(session: DouyinImSession) -> bool:
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return bool(session.cookies.get("sessionid") or session.cookies.get("sessionid_ss"))
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def extract_sessionid_info(session: DouyinImSession) -> dict:
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sessionid = session.cookies.get("sessionid") or ""
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sessionid_ss = session.cookies.get("sessionid_ss") or ""
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return {
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"has_sessionid": bool(sessionid or sessionid_ss),
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"sessionid": sessionid,
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"sessionid_ss": sessionid_ss,
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}
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async def build_cookie_credential_detail(
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cookie_data: Optional[str],
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im_session_data: Optional[str] = None,
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runtime_check: bool = True,
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) -> dict:
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"""供编辑账号页展示 IM 凭证与 sessionid 信息"""
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sessionid_info = {
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"has_sessionid": False,
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"sessionid": "",
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"sessionid_ss": "",
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"im_ready": False,
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"im_status": "未保存 Cookie",
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"can_skip_browser": False,
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"should_reset": False,
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}
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if not cookie_data:
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return sessionid_info
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try:
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storage = json.loads(cookie_data)
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session = build_im_session_from_storage(storage, im_session_data)
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sessionid_info.update(extract_sessionid_info(session))
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except Exception:
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sessionid_info["im_status"] = "Cookie 格式错误"
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return sessionid_info
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if not runtime_check:
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if sessionid_info["has_sessionid"]:
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sessionid_info["im_status"] = "已检测到 sessionid（未做运行时验证）"
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else:
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sessionid_info["im_status"] = "缺少 sessionid，无法 IM 直连"
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return sessionid_info
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assessment = await assess_account_credential(cookie_data, im_session_data)
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sessionid_info["im_ready"] = assessment["im_ready"]
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sessionid_info["im_status"] = assessment["message"]
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sessionid_info["can_skip_browser"] = assessment["can_skip_browser"]
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sessionid_info["should_reset"] = assessment["should_reset"]
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return sessionid_info
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async def validate_im_session(
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session: DouyinImSession,
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_bypass_global_limit: bool = False,
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) -> tuple[bool, str]:
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if not _bypass_global_limit:
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from rpa_engine.douyin_im.traffic_control import get_traffic_controller
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controller = get_traffic_controller()
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async with controller.background_slot(0, "credential validation"):
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return await validate_im_session(session, _bypass_global_limit=True)
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if not session.can_direct_im():
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if not has_im_session_token(session):
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return False, "缺少 sessionid，无法直连 IM"
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return False, "Cookie 不满足 IM 直连条件"
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await asyncio.to_thread(ensure_frontier_ws, session)
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try:
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auth = DouyinAuth.from_im_session(session)
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# 优先用已持久化的 my_uid，避免每次都发起网络 query_my_uid（uid_tt 是加密串，
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# int() 解析必然失败而回退到网络请求；该请求偶发失败会误判为“未就绪”）。
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uid = session.my_uid or auth.get_uid()
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if not uid:
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return False, "服务端未认可当前 Cookie（无法获取用户 UID）"
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if not auth.is_sign_ready():
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return False, "缺少 IM 签名密钥（web_protect/keys），请用浏览器登录补全"
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session.my_uid = int(uid)
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async with DouyinImHttpClient(session) as http:
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await http.get_unread_count()
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# 若已缓存到会话票据，优先校验其是否仍新鲜（最理想）。
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if session.conv_meta:
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ok, reason = await http.verify_messaging_capability(auth, session.my_uid)
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if ok:
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return True, reason
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# 没有缓存会话票据是首次登录的正常情况：会话 ticket 会在发送时即时
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# 创建/获取（resolve_conversation_meta），因此只要 Cookie + sessionid +
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# 签名密钥(web_protect/keys) + UID 齐全，就视为可 IM 直连托管，不必再开浏览器。
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return True, "IM 凭证就绪（Cookie 与签名密钥齐全，可直连托管）"
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except Exception as e:
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logger.warning(f"IM session validation failed: {e}")
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return False, f"IM 运行时验证失败: {e}"
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async def assess_account_credential(
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cookie_data: Optional[str],
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im_session_data: Optional[str] = None,
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) -> dict:
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cookie_info = analyze_cookie(cookie_data)
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result = {
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"has_cookie": cookie_info.get("has_cookie", False),
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"cookie_valid": cookie_info.get("cookie_valid", False),
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"cookie_status": cookie_info.get("reason", ""),
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"has_sessionid": False,
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"im_ready": False,
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"can_skip_browser": False,
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"login_mode": "browser",
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"message": "未保存 Cookie，需浏览器扫码登录",
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"should_reset": False,
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}
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if not cookie_data:
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return result
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try:
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storage = json.loads(cookie_data)
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except Exception:
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result["message"] = "Cookie 格式错误"
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result["should_reset"] = _should_reset_credentials(result)
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return result
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session = build_im_session_from_storage(storage, im_session_data)
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result["has_sessionid"] = has_im_session_token(session)
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if not cookie_info.get("cookie_valid"):
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result["message"] = cookie_info.get("reason") or "Cookie 无效，需重新登录"
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result["should_reset"] = _should_reset_credentials(result)
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return result
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if not result["has_sessionid"]:
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result["login_mode"] = "browser"
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result["message"] = "Cookie 已保存但缺少 sessionid，需浏览器刷新登录态"
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result["should_reset"] = _should_reset_credentials(result)
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return result
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im_ok, im_reason = await validate_im_session(session)
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result["im_ready"] = im_ok
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if im_ok:
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result["can_skip_browser"] = True
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result["login_mode"] = "im_direct"
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result["message"] = im_reason
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else:
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result["login_mode"] = "browser"
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result["message"] = im_reason
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result["should_reset"] = _should_reset_credentials(result)
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return result
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