拆分补CK逻辑

2026-06-24 09:38:17 +08:00
parent d87aa7c1e6
commit 72248eb3cc
2 changed files with 144 additions and 129 deletions
@@ -0,0 +1,137 @@
+"""斗鱼 Web Cookie 补齐逻辑。"""
+
+from __future__ import annotations
+
+import json
+from collections.abc import Callable
+
+import requests
+from loguru import logger
+
+
+class CookieEnricher:
+    """补齐登录后 Web 侧需要的 Cookie。"""
+
+    CSRF_API = "https://www.douyu.com/japi/carnival/nc/common/generateCsrf"
+    CSRF_REFERER = "https://www.douyu.com/pages/live-peace-handbook/web/shop?ditchname=pass0&roomId=9263298"
+    ACF_CCN_API = "https://www.douyu.com/curl/csrfNlApi/getCsrfCookie"
+    ACF_CCN_REFERER = "https://www.douyu.com/pages/ord-task-center?clientType=web&panelSource=1&rid=0"
+    TIMEOUT = (5, 10)
+    RETRIES = 3
+
+    def __init__(
+        self,
+        session: requests.Session,
+        request_func: Callable[..., requests.Response],
+        ensure_not_stopped: Callable[[], None],
+        sleep_interruptible: Callable[[float], None],
+    ):
+        self.session = session
+        self.request = request_func
+        self.ensure_not_stopped = ensure_not_stopped
+        self.sleep_interruptible = sleep_interruptible
+
+    def enrich_with_retry(self, max_attempts: int = RETRIES) -> None:
+        """独立重试补齐 cvl_csrf_token 和 acf_ccn，不触发整条登录链路重跑。"""
+        last_error: Exception | None = None
+        for attempt in range(1, max_attempts + 1):
+            self.ensure_not_stopped()
+            try:
+                logger.info(f"补CK尝试 {attempt}/{max_attempts}...")
+                self.generate_csrf_cookie()
+                self.generate_acf_ccn_cookie()
+                logger.info("补CK完成")
+                return
+            except Exception as e:
+                last_error = e
+                logger.warning(f"补CK失败 {attempt}/{max_attempts}: {e}")
+                if attempt < max_attempts:
+                    self.sleep_interruptible(1)
+        raise ValueError(f"已重试 {max_attempts} 次仍未补齐CK: {last_error}") from last_error
+
+    def generate_csrf_cookie(self) -> str:
+        """访问 generateCsrf 接口，从 Set-Cookie 中同步 cvl_csrf_token。"""
+        logger.info("补齐CSRF Cookie...")
+        headers = {
+            'Accept': 'application/json, text/plain, */*',
+            'Accept-Language': 'zh-CN,zh;q=0.9,en-US;q=0.6,en;q=0.5',
+            'Origin': 'https://www.douyu.com',
+            'Referer': self.CSRF_REFERER,
+            'Sec-Fetch-Dest': 'empty',
+            'Sec-Fetch-Mode': 'cors',
+            'Sec-Fetch-Site': 'same-origin',
+            # 覆盖登录接口的默认表单头，尽量贴近浏览器抓包。
+            'Content-Type': None,
+            'X-Requested-With': None,
+        }
+        response = self.request(
+            'post',
+            self.CSRF_API,
+            headers=headers,
+            timeout=self.TIMEOUT,
+            max_retries=1,
+        )
+        response.raise_for_status()
+
+        body = response.text.strip()
+        if not body:
+            raise ValueError("生成CSRF失败: 响应为空")
+
+        try:
+            payload = response.json()
+        except json.JSONDecodeError as exc:
+            preview = body[:200].replace("\n", "\\n")
+            raise ValueError(f"生成CSRF失败: 响应不是有效 JSON: {preview}") from exc
+
+        if payload.get('error') != 0:
+            raise ValueError(f"生成CSRF失败: {payload.get('msg', '未知错误')}")
+
+        cookies = self.session.cookies.get_dict()
+        csrf_token = cookies.get('cvl_csrf_token', '')
+        if not csrf_token:
+            raise ValueError("生成CSRF失败: 响应没有 cvl_csrf_token")
+
+        logger.info("CSRF Cookie已补齐")
+        return csrf_token
+
+    def generate_acf_ccn_cookie(self) -> str:
+        """访问 getCsrfCookie 接口，从 Set-Cookie 中同步 acf_ccn。"""
+        logger.info("补齐 acf_ccn Cookie...")
+        headers = {
+            'Accept': 'application/json, text/plain, */*',
+            'Accept-Language': 'zh-CN,zh;q=0.9',
+            'Cache-Control': 'no-cache',
+            'Pragma': 'no-cache',
+            'Priority': 'u=1, i',
+            'Referer': self.ACF_CCN_REFERER,
+            'Sec-CH-UA': '"Google Chrome";v="149", "Chromium";v="149", "Not)A;Brand";v="24"',
+            'Sec-CH-UA-Mobile': '?0',
+            'Sec-CH-UA-Platform': '"macOS"',
+            'Sec-Fetch-Dest': 'empty',
+            'Sec-Fetch-Mode': 'cors',
+            'Sec-Fetch-Site': 'same-origin',
+            # 该接口抓包没有 Origin、表单 Content-Type 和 X-Requested-With。
+            'Origin': None,
+            'Content-Type': None,
+            'X-Requested-With': None,
+        }
+        response = self.request(
+            'get',
+            self.ACF_CCN_API,
+            headers=headers,
+            timeout=self.TIMEOUT,
+            max_retries=1,
+        )
+        response.raise_for_status()
+
+        cookies = self.session.cookies.get_dict()
+        acf_ccn = cookies.get('acf_ccn', '') or response.cookies.get('acf_ccn', '')
+        if acf_ccn and not cookies.get('acf_ccn'):
+            # 极少数情况下响应 Cookie 未合入 get_dict，手动补到斗鱼域名下。
+            self.session.cookies.set('acf_ccn', acf_ccn, domain='.douyu.com', path='/')
+
+        if not acf_ccn:
+            raise ValueError("补齐 acf_ccn 失败: 响应没有 acf_ccn")
+
+        logger.info("acf_ccn Cookie已补齐")
+        return acf_ccn