root
133 lines
4.2 KiB
JavaScript
Executable File
133 lines
4.2 KiB
JavaScript
Executable File
/**
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* Cloudflare / Turnstile 挑战页检测
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*
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* antiBot.cfClearanceRequired === false（A2C 业务域）：仅真实 CF 中间页算 blocked，
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* 不因页面引用 turnstile.js 或缺少 cf_clearance cookie 误判。
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*/
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/**
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* URL 是否处于 CF Managed Challenge 中间态（Whatshub 短链常见 __cf_chl_rt_tk）
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* @param {string} url
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*/
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function urlIndicatesCfChallenge(url) {
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if (!url || typeof url !== 'string') {
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return false;
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}
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return url.includes('__cf_chl_rt_tk')
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|| url.includes('__cf_chl_tk')
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|| url.includes('__cf_chl_f_tk')
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|| url.includes('/cdn-cgi/challenge-platform')
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|| url.includes('/cdn-cgi/challenge');
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}
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/**
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* 是否要求 cf_clearance 才视为过盾完成（A2C user.a2c.chat 为 false）
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* @param {object|null|undefined} antiBot
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*/
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function isCfClearanceRequired(antiBot) {
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return antiBot?.cfClearanceRequired !== false;
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}
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/**
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* @typedef {Object} CloudflareState
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* @property {boolean} blocked 是否处于 CF 挑战中
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* @property {string|null} challengeType turnstile|js_challenge|unknown|null
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* @property {boolean} hasCfClearance 是否已有 cf_clearance cookie
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* @property {string} url 当前页面 URL
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* @property {string} title 页面 title
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*/
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/**
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* 检测页面是否被 Cloudflare 拦截
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* @param {import('puppeteer').Page} page
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* @param {object|null} [antiBot]
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* @returns {Promise<CloudflareState>}
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*/
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async function detectCloudflare(page, antiBot = null) {
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const url = page.url();
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const title = await page.title().catch(() => '');
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const cookies = await page.cookies().catch(() => []);
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const hasCfClearance = cookies.some((c) => c.name === 'cf_clearance');
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const domSignals = await page.evaluate(() => {
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const hasTurnstileInput = !!document.querySelector('[name="cf-turnstile-response"]');
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const hasTurnstileWidget = !!document.querySelector('.cf-turnstile, [data-sitekey]');
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const hasChallengeRunning = !!document.querySelector('#challenge-running, #cf-challenge-running');
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const titleText = document.title || '';
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const bodyText = (document.body && document.body.innerText) ? document.body.innerText.slice(0, 500) : '';
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return {
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hasTurnstileInput,
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hasTurnstileWidget,
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hasChallengeRunning,
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titleHasJustAMoment: titleText.includes('Just a moment'),
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bodyHasJustAMoment: bodyText.includes('Just a moment') || bodyText.includes('Checking your browser'),
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};
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}).catch(() => ({
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hasTurnstileInput: false,
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hasTurnstileWidget: false,
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hasChallengeRunning: false,
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titleHasJustAMoment: false,
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bodyHasJustAMoment: false,
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}));
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const urlChallenge = urlIndicatesCfChallenge(url);
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const realChallenge = urlChallenge
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|| domSignals.titleHasJustAMoment
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|| domSignals.bodyHasJustAMoment
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|| domSignals.hasChallengeRunning
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|| title.includes('Just a moment');
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const turnstileSignals = domSignals.hasTurnstileInput || domSignals.hasTurnstileWidget;
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let challengeType = null;
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if (turnstileSignals || url.includes('__cf_chl')) {
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challengeType = 'turnstile';
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} else if (realChallenge) {
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challengeType = 'js_challenge';
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}
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const requireClearance = isCfClearanceRequired(antiBot);
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let blocked;
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if (requireClearance) {
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blocked = !hasCfClearance && (realChallenge || turnstileSignals);
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} else {
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blocked = realChallenge;
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}
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return {
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blocked,
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challengeType,
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hasCfClearance,
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url,
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title,
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};
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}
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/**
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* 检测 Turnstile 是否已通过
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* @param {import('puppeteer').Page} page
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* @returns {Promise<boolean>}
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*/
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async function isTurnstileSolved(page) {
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const cookies = await page.cookies().catch(() => []);
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if (cookies.some((c) => c.name === 'cf_clearance')) {
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return true;
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}
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const tokenLen = await page.evaluate(() => {
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const input = document.querySelector('[name="cf-turnstile-response"]');
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return input && input.value ? input.value.length : 0;
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}).catch(() => 0);
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return tokenLen > 20;
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}
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module.exports = {
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detectCloudflare,
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isTurnstileSolved,
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urlIndicatesCfChallenge,
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isCfClearanceRequired,
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};
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