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Cloudflare 5s 盾自动求解 + 页面批量抓取工具(基于 CloakBrowser)

Project description

CF Killer

基于 CloakBrowser(Chromium C++ 源码级反检测浏览器)的 Cloudflare 5 秒盾自动求解 + 页面批量抓取 工具。


1. 运行环境

项目 说明
OS Windows 10+ / Linux / macOS
Python 3.9+(推荐 3.11)
浏览器 CloakBrowser 专用 Chromium(自动下载,~200MB)

2. 依赖安装

# 1. 安装 cloakbrowser(含 Playwright)
pip install cloakbrowser

# 2. 下载特制 Chromium 二进制(首次运行前执行一次)
python -c "import cloakbrowser; cloakbrowser.ensure_binary()"

核心依赖链:

cloakbrowser (C++ 源码级反检测 Chromium)
  ├── playwright >= 1.40        # 浏览器自动化
  ├── httpx >= 0.24             # HTTP 客户端
  └── greenlet >= 3.1.1         # 协程支持

3. 功能概述

3.1 Cloudflare 自动解盾 (CFSolver)

自动检测并求解 Cloudflare Turnstile 挑战,支持多种 challenge 类型:

类型 策略
non-interactive 纯轮询等待 CF 自动放行
managed 等待 iframe → 点击 checkbox → 轮询消失
interactive 同上,带更复杂的点击路径
embedded 嵌入式 Turnstile 求解

点击采用四路径递进策略:iframe 内精确选择器 → iframe 坐标点击 → 主页面容器坐标 → Tab+Space 兜底。

3.2 页面批量抓取 (CFPageFetcher)

  • 基于 CloakBrowser 持久化上下文,复用浏览器指纹和 cookie
  • 内置 CF 检测(支持 JS 延迟写入标题的站点,如 ScienceDirect)
  • 自动 context 回收:处理 N 页后重建浏览器上下文,防止内存泄漏
  • 延迟回收机制:并发场景下等活跃页面全部完成后再回收,避免竞态崩溃
  • 支持代理(单实例/多实例/callable 三种模式)

3.3 文件下载 (download_file)

过 CF 后,通过页内 fetch() 直接下载二进制文件(PDF、图片等),复用浏览器 cookie 和 TLS 指纹,绕过反爬限制。

3.4 多实例并行 (fetch_all)

将 URL 均匀分配到多个浏览器实例,每个实例独立 event loop + 独立代理,ThreadPoolExecutor 并行执行,最大化吞吐量。

3.5 主入口函数

函数 用途
fetch_url(url, ...) 同步抓取单个 URL
fetch_urls(urls, ...) 同步批量抓取(fetch_all 别名)
fetch_all(urls, ...) 多实例并行抓取,支持分片代理

4. 测试案例

案例 A:批量页面抓取

测试 31 个混合 URL(Gut 医学期刊 + American Football Wiki + ScienceDirect),验证 CF 解盾和页面抓取能力。

# -*- coding: utf-8 -*-
"""CF 自动解盾 + 页面抓取 — 测试脚本"""
import os
import sys

if sys.platform == "win32":
    import io
    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding="utf-8", errors="replace")
    sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding="utf-8", errors="replace")

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from cf_killer import fetch_all

HEADLESS               = True
PROXY                  = None
CONCURRENCY            = 3
INSTANCES              = 2
MAX_PAGES_PER_CONTEXT  = 10
RETURN_COOKIES         = False

URLS = [
    "https://gut.bmj.com/content/75/6/1085",
    "https://gut.bmj.com/content/75/6/1087",
    "https://gut.bmj.com/content/75/6/1090",
    "https://gut.bmj.com/content/75/6/1092",
    "https://gut.bmj.com/content/75/6/1094",
    "https://gut.bmj.com/content/75/6/1097",
    "https://gut.bmj.com/content/75/6/1110",
    "https://gut.bmj.com/content/75/6/1123",
    "https://gut.bmj.com/content/75/6/1136",
    "https://gut.bmj.com/content/75/6/1147",
    "https://gut.bmj.com/content/75/6/1160",
    "https://gut.bmj.com/content/75/6/1169",
    "https://gut.bmj.com/content/75/6/1186",
    "https://gut.bmj.com/content/75/6/1201",
    "https://gut.bmj.com/content/75/6/1211",
    "https://gut.bmj.com/content/75/6/1226",
    "https://gut.bmj.com/content/75/6/1237",
    "https://gut.bmj.com/content/75/6/1248",
    "https://gut.bmj.com/content/75/6/1264",
    "https://gut.bmj.com/content/75/6/1266.1",
    "https://gut.bmj.com/content/75/6/1266.2",
    "https://gut.bmj.com/content/75/6/1267",
    "https://gut.bmj.com/content/75/6/1109",
    "http://americanfootball.fandom.com/1993_Kentucky_vs._Mississippi",
    "http://americanfootball.fandom.com/Isaiah_Foskey",
    "http://americanfootball.fandom.com/wiki/2014_Susquehanna_Crusaders",
    "http://americanfootball.fandom.com/wiki/2015_Lake_Forest_Foresters",
    "http://americanfootball.fandom.com/wiki/2023_Colorado_State_Rams",
    "http://americanfootballdatabase.fandom.com/Paul_Hackett_(American_football)",
    "http://americanfootballdatabase.fandom.com/wiki/100th_Grey_Cup",
    "https://www.sciencedirect.com/science/article/pii/S0039606025002491",
]

if __name__ == "__main__":
    print(f"测试: {len(URLS)} 个 URL")

    results = fetch_all(
        URLS,
        instances=INSTANCES,
        concurrency=CONCURRENCY,
        max_pages_per_context=MAX_PAGES_PER_CONTEXT,
        headless=HEADLESS,
        solve_cf=True,
        proxy=PROXY,
        return_cookies=RETURN_COOKIES,
        verbose=False,
    )

    ok = sum(1 for r in results if r["success"])
    print(f"\n{'='*50}")
    for r in results:
        status = "✓" if r["success"] else "✗"
        print(f"  {status}  {(r['title'] or 'FAILED')[:60]}")
    print(f"{'='*50}")
    print(f"结果: {ok}/{len(results)} 成功")

运行:python test.py

预期输出:

测试: 31 个 URL

==================================================
  ✓  Gut-peritoneal-multisystem axis in endometriosis | Gut
  ✓  Hitting the mitotic spot of fibrolamellar carcinoma | Gut
  ...
  ✓  100th Grey Cup | American Football Database | Fandom
  ✓  Guidelines for perioperative care in elective colorectal sur
==================================================
结果: 31/31 成功

案例 B:PDF 文件下载

通过过 CF 后的浏览器页面发起 fetch() 下载 PDF,复用 TLS 指纹和 cookie。

# -*- coding: utf-8 -*-
"""测试 download_file 方法 — PDF 下载"""
import asyncio
import os
import sys

if sys.platform == "win32":
    import io
    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding="utf-8", errors="replace")
    sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding="utf-8", errors="replace")

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from cf_killer import CFPageFetcher

PDF_URL = "https://www.myavls.org/assets/pdf/SuperficialVenousDiseaseGuidelinesPMS313-02.03.16.pdf"
OUTPUT = os.path.join(os.path.dirname(os.path.abspath(__file__)), "SuperficialVenousDiseaseGuidelines.pdf")


async def main():
    print(f"目标: {PDF_URL}")
    print(f"保存: {OUTPUT}")

    async with CFPageFetcher(
        headless=True,
        verbose=True,
        solve_cf=True,
    ) as fetcher:
        ok = await fetcher.download_file(PDF_URL, OUTPUT)
        if ok:
            size_kb = os.path.getsize(OUTPUT) / 1024
            print(f"\n✅ 下载成功! 文件: {OUTPUT} ({size_kb:.0f} KB)")
        else:
            print(f"\n❌ 下载失败")


if __name__ == "__main__":
    asyncio.run(main())

运行:python test_download.py

预期输出:

目标: https://www.myavls.org/assets/pdf/SuperficialVenousDiseaseGuidelinesPMS313-02.03.16.pdf
保存: ...\SuperficialVenousDiseaseGuidelines.pdf
[上下文] 已创建
[下载] 预热: https://www.myavls.org/
非 CF url=https://www.myavls.org/
[下载] 已保存: ...\SuperficialVenousDiseaseGuidelines.pdf (121KB)

✅ 下载成功! ... (121 KB)

5. 主要 API 参数

CFPageFetcher

参数 类型 默认值 说明
headless bool True 无头模式
humanize bool False 人类化鼠标轨迹/键盘时序
solve_cf bool True 自动求解 CF 挑战
cf_max_retries int 5 CF 求解最大重试次数
timeout int 90000 页面导航超时 (ms)
proxy str None 代理 URL
max_pages_per_context int 20 每 N 页回收浏览器上下文
return_cookies bool False 结果中是否包含 cookies

fetch_all

参数 类型 默认值 说明
urls list - URL 列表
instances int 1 并行浏览器实例数
concurrency int 3 每实例并发 tab 数
max_pages_per_context int 20 每 N 页自动回收
proxy str/list/callable None 单代理/代理列表/代理工厂函数

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