Added DOM-based fallback detection for when network requests fail due to CORS or other security policies. 新增基于DOM的回退检测机制，以应对因CORS等安全策略导致网络请求失败的情况。
当前为
// ==UserScript==
// @name CDN & Server Info Displayer Enhanced (增强版CDN及服务器信息显示)
// @namespace http://tampermonkey.net/
// @version 2025.06.11.16
// @description Added DOM-based fallback detection for when network requests fail due to CORS or other security policies. 新增基于DOM的回退检测机制，以应对因CORS等安全策略导致网络请求失败的情况。
// @author Claude (Enhanced by AI)
// @license MIT
// @match *://*/*
// @grant GM_addStyle
// @run-at document-end
// ==/UserScript==
(function() {
'use strict';
// --- 配置项 ---
const config = {
initialPosition: { bottom: '15px', right: '15px' },
panelBgColor: 'rgba(44, 62, 80, 0.95)',
panelTextColor: '#ffffff',
borderColor: '#3498db',
opacity: '0.9',
animationDuration: '0.3s',
minWindowSize: { width: 400, height: 300 },
excludePatterns: [
/pay(pal|ment)/i, /checkout/i, /billing/i,
/login/i, /signin/i, /auth/i, /oauth/i,
/ads/i, /advertisement/i, /doubleclick/i,
/facebook\.com\/plugins/i, /twitter\.com\/widgets/i,
/widget/i, /embed/i, /popup/i, /modal/i
]
};
// --- CDN 服务商检测规则 (基于HTTP头) ---
const cdnProviders = {
'Cloudflare': {
headers: ['cf-ray', 'cf-cache-status', 'cf-request-id'], serverHeaders: ['cloudflare'], priority: 10,
getInfo: (h) => ({ provider: 'Cloudflare', cache: h.get('cf-cache-status')?.toUpperCase() || 'N/A', pop: h.get('cf-ray')?.slice(-3).toUpperCase() || 'N/A', extra: `Ray ID: ${h.get('cf-ray') || 'N/A'}` })
},
'Tencent EdgeOne': {
serverHeaders: ['TencentEdgeOne'], headers: ['eo-cache-status', 'eo-log-uuid'], priority: 10,
getInfo: (h) => ({ provider: 'Tencent EdgeOne', cache: h.get('eo-cache-status')?.toUpperCase() || 'N/A', pop: 'N/A', extra: `Log-UUID: ${h.get('eo-log-uuid') || 'N/A'}` })
},
'Fastly': {
headers: ['x-fastly-request-id', 'x-served-by'], priority: 9,
getInfo: (h) => ({ provider: 'Fastly', cache: h.get('x-cache')?.split(',')[0].toUpperCase() || 'N/A', pop: h.get('x-served-by')?.split('-')[0] || 'N/A', extra: `ReqID: ${h.get('x-fastly-request-id') || 'N/A'}` })
},
'AWS CloudFront': {
headers: ['x-amz-cf-pop', 'x-amz-cf-id'], priority: 9,
getInfo: (h) => ({ provider: 'AWS CloudFront', cache: h.get('x-cache')?.split(' from ')[0].toUpperCase() || 'N/A', pop: h.get('x-amz-cf-pop') || 'N/A', extra: `CF ID: ${h.get('x-amz-cf-id') || 'N/A'}` })
},
'Qiniu CDN': {
headers: ['x-qiniu-zone', 'x-qnm-cache'], priority: 9,
getInfo: (h) => ({ provider: 'Qiniu CDN', cache: h.get('x-qnm-cache')?.toUpperCase() || h.get('x-cache')?.split(' ')[0].toUpperCase() || 'N/A', pop: `Zone ${h.get('x-qiniu-zone') || 'N/A'}`, extra: `ReqID: ${h.get('x-reqid') || 'N/A'}` })
},
'Alibaba Cloud CDN': {
headers: ['eagleid', 'eagleeye-traceid'], serverHeaders: ['tengine', 'alicdn'], priority: 9,
getInfo: (h) => {
let cacheStatus = 'N/A';
if (h.get('x-cache-remote')?.includes('HIT')) cacheStatus = 'HIT'; else if (h.get('x-cache-remote')?.includes('MISS')) cacheStatus = 'MISS';
const traceId = h.get('eagleid') || h.get('eagleeye-traceid');
return { provider: 'Alibaba Cloud CDN', cache: cacheStatus, pop: 'N/A', extra: `TraceID: ${traceId || 'N/A'}` };
}
},
'Tencent Cloud CDN': {
headers: ['x-cache-lookup', 'x-nws-log-uuid'], serverHeaders: ['nws'], priority: 9,
getInfo: (h) => ({ provider: 'Tencent Cloud CDN', cache: h.get('x-cache-lookup')?.toUpperCase() || 'N/A', pop: h.get('x-nws-log-uuid') ? 'Available' : 'N/A', extra: null })
},
'Akamai': {
headers: ['x-akamai-transformed', 'x-check-cacheable'], priority: 9,
getInfo: (h) => ({ provider: 'Akamai', cache: (h.get('x-check-cacheable') || h.get('x-cache'))?.toUpperCase() || 'N/A', pop: 'N/A', extra: h.get('x-akamai-transformed') ? 'Content transformed' : null })
},
'QUIC.cloud': {
headers: ['x-qc-cache', 'x-qc-pop'], serverHeaders: ['litespeed'], priority: 8,
getInfo: (h) => ({ provider: 'QUIC.cloud', cache: h.get('x-qc-cache')?.toUpperCase() || 'N/A', pop: h.get('x-qc-pop')?.toUpperCase() || 'N/A', extra: null })
},
'Vercel': {
headers: ['x-vercel-id', 'x-vercel-cache'], priority: 8,
getInfo: (h) => {
let pop = 'N/A';
const vercelId = h.get('x-vercel-id');
if (vercelId) { const parts = vercelId.split('::'); if (parts.length > 1) pop = parts[1].split('-')[0].toUpperCase(); }
return { provider: 'Vercel', cache: h.get('x-vercel-cache')?.toUpperCase() || 'N/A', pop: pop, extra: null };
}
},
};
function parseInfo(headers) {
const lowerCaseHeaders = new Map();
for (const [key, value] of headers.entries()) { lowerCaseHeaders.set(key.toLowerCase(), value); }
let detectedProviders = [];
for (const [cdnName, cdn] of Object.entries(cdnProviders)) {
let isMatch = false;
if (cdn.serverHeaders) { const serverHeader = lowerCaseHeaders.get('server') || ''; if (cdn.serverHeaders.some(server => serverHeader.toLowerCase().includes(server.toLowerCase()))) isMatch = true; }
if (!isMatch && cdn.headers?.some(header => lowerCaseHeaders.has(header.toLowerCase()))) isMatch = true;
if (isMatch) { detectedProviders.push({ ...cdn.getInfo(lowerCaseHeaders), priority: cdn.priority || 5 }); }
}
if (detectedProviders.length > 0) { detectedProviders.sort((a, b) => b.priority - a.priority); return detectedProviders[0]; }
const server = lowerCaseHeaders.get('server');
if (server) { return { provider: server, cache: 'N/A', pop: 'N/A', extra: 'No CDN detected' }; }
return { provider: 'Unknown', cache: 'N/A', pop: 'N/A', extra: 'No CDN or Server info' };
}
function addStyles() {
GM_addStyle(`
#cdn-info-panel-enhanced { position: fixed; z-index: 99999; padding: 12px 16px; border-radius: 12px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; font-size: 13px; color: ${config.panelTextColor}; background: ${config.panelBgColor}; backdrop-filter: blur(10px); border: 1px solid ${config.borderColor}; box-shadow: 0 8px 32px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.1); cursor: move; user-select: none; transition: opacity ${config.animationDuration}, transform ${config.animationDuration}; opacity: ${config.opacity}; transform: scale(1); min-width: 220px; }
#cdn-info-panel-enhanced:hover { opacity: 1; transform: scale(1.02); }
#cdn-info-panel-enhanced .panel-header { font-weight: 600; font-size: 14px; margin-bottom: 8px; color: ${config.borderColor}; text-align: center; border-bottom: 1px solid rgba(52, 152, 219, 0.3); padding-bottom: 6px; }
#cdn-info-panel-enhanced .info-line { display: flex; justify-content: space-between; align-items: center; margin: 6px 0; padding: 2px 0; }
#cdn-info-panel-enhanced .info-label { font-weight: 500; color: #a9cce3; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
#cdn-info-panel-enhanced .info-value { font-weight: 600; color: #ffffff; max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-align: right; }
#cdn-info-panel-enhanced .extra-info { font-size: 11px; color: #95a5a6; font-style: italic; text-align: center; margin-top: 8px; padding-top: 6px; border-top: 1px solid rgba(149, 165, 166, 0.2); word-break: break-all; }
#cdn-info-panel-enhanced .cache-HIT { color: #2ecc71 !important; }
#cdn-info-panel-enhanced .cache-MISS { color: #e74c3c !important; }
#cdn-info-panel-enhanced .close-btn { position: absolute; top: -8px; right: -8px; width: 20px; height: 20px; border-radius: 50%; background: #e74c3c; color: white; border: none; cursor: pointer; font-size: 12px; display: none; align-items: center; justify-content: center; transition: all 0.2s; }
#cdn-info-panel-enhanced:hover .close-btn { display: flex; }
#cdn-info-panel-enhanced .close-btn:hover { background: #c0392b; transform: scale(1.1); }
`);
}
function createDisplayPanel(info) {
if (!info || document.getElementById('cdn-info-panel-enhanced')) return;
addStyles();
const panel = document.createElement('div');
panel.id = 'cdn-info-panel-enhanced';
const cacheStatus = info.cache.toUpperCase();
const cacheClass = cacheStatus.includes('HIT') ? 'cache-HIT' : (cacheStatus.includes('MISS') ? 'cache-MISS' : '');
const providerLabel = info.provider.includes('CDN') || info.provider.includes('Cloud') || info.provider.includes('Edge') || info.provider.includes('(inferred)') ? 'CDN' : 'Server';
panel.innerHTML = `
<button class="close-btn" title="Close" onclick="this.parentElement.remove()">×</button>
<div class="panel-header">CDN & Server Info</div>
<div class="info-line">
<span class="info-label">${providerLabel}</span>
<span class="info-value" title="${info.provider}">${info.provider}</span>
</div>
<div class="info-line">
<span class="info-label">Cache</span>
<span class="info-value ${cacheClass}">${info.cache}</span>
</div>
<div class="info-line">
<span class="info-label">POP</span>
<span class="info-value" title="${info.pop}">${info.pop}</span>
</div>
${info.extra ? `<div class="extra-info" title="${info.extra}">${info.extra}</div>` : ''}
`;
Object.assign(panel.style, config.initialPosition);
document.body.appendChild(panel);
makeDraggable(panel);
}
function makeDraggable(element) {
let isDragging = false, startX = 0, startY = 0, elementX = 0, elementY = 0;
element.addEventListener('mousedown', (e) => {
if (e.target.classList.contains('close-btn')) return;
isDragging = true; startX = e.clientX; startY = e.clientY; const rect = element.getBoundingClientRect(); elementX = rect.left; elementY = rect.top;
element.style.transition = 'none'; document.addEventListener('mousemove', drag); document.addEventListener('mouseup', dragEnd);
});
function drag(e) {
if (!isDragging) return;
const newX = elementX + e.clientX - startX; const newY = elementY + e.clientY - startY;
const maxX = window.innerWidth - element.offsetWidth; const maxY = window.innerHeight - element.offsetHeight;
element.style.left = `${Math.max(0, Math.min(newX, maxX))}px`; element.style.top = `${Math.max(0, Math.min(newY, maxY))}px`;
element.style.right = 'auto'; element.style.bottom = 'auto';
}
function dragEnd() {
isDragging = false; element.style.transition = `opacity ${config.animationDuration}, transform ${config.animationDuration}`;
document.removeEventListener('mousemove', drag); document.removeEventListener('mouseup', dragEnd);
}
}
function isElementVisible(el) {
if (!el) return false;
const rect = el.getBoundingClientRect();
return (rect.width > 1 && rect.height > 1 && getComputedStyle(el).visibility !== 'hidden' && getComputedStyle(el).display !== 'none');
}
function shouldShowPanel() {
if (window !== window.top && (window.innerWidth < config.minWindowSize.width || window.innerHeight < config.minWindowSize.height)) return false;
const url = window.location.href.toLowerCase();
if (config.excludePatterns.some(pattern => pattern.test(url))) return false;
const captchaSelectors = {
strict: [/challenge/i, /verify/i, /security check/i],
lenient: ['[id*="captcha"]', '[class*="captcha"]', '[id*="recaptcha"]', '[class*="recaptcha"]', '[id*="hcaptcha"]', '[class*="hcaptcha"]', '[class*="cf-turnstile"]', '[id*="turnstile"]']
};
if (captchaSelectors.strict.some(pattern => pattern.test(document.title.toLowerCase()))) return false;
if (captchaSelectors.lenient.some(selector => isElementVisible(document.querySelector(selector)))) return false;
const excludeDomains = ['accounts.google.com', 'login.microsoftonline.com', 'challenges.cloudflare.com'];
if (excludeDomains.some(domain => window.location.hostname.toLowerCase().includes(domain))) return false;
return true;
}
/**
* [新增] Plan B: 当网络请求失败时，从DOM中寻找线索
* @returns {boolean} - 如果从DOM中成功识别并显示了面板，返回 true
*/
function detectFromDOM() {
try {
const html = document.documentElement.innerHTML.toLowerCase();
// Cloudflare 的线索: /cdn-cgi/ 是其常用路径, privacy-policy链接是您案例中的关键
if (html.includes('/cdn-cgi/') || html.includes('cloudflare.com/privacypolicy')) {
createDisplayPanel({ provider: 'Cloudflare (inferred)', cache: 'N/A', pop: 'N/A', extra: 'From page content' });
return true;
}
// Vercel 的线索: 通常在页脚有 "Powered by Vercel" 的链接
const vercelLink = Array.from(document.querySelectorAll('a[href="https://vercel.com"]')).find(a => a.innerText.toLowerCase().includes('powered by'));
if (vercelLink) {
createDisplayPanel({ provider: 'Vercel (inferred)', cache: 'N/A', pop: 'N/A', extra: 'From page footer' });
return true;
}
// 可在此处为其他CDN添加更多DOM识别规则...
} catch (e) {
console.error('[CDN Detector] DOM detection failed:', e);
}
return false;
}
async function main() {
if (document.readyState !== "complete") {
await new Promise(resolve => window.addEventListener("load", resolve, { once: true }));
}
if (!shouldShowPanel()) {
console.log('[CDN Detector] Page does not meet display criteria.');
return;
}
try { // Plan A: 网络请求
const response = await fetch(window.location.href, { method: 'HEAD', cache: 'no-cache', redirect: 'follow' });
const info = parseInfo(response.headers);
console.log('[CDN Detector] Result from Headers:', info);
createDisplayPanel(info);
} catch (error) {
console.warn('[CDN Detector] HEAD request failed, trying DOM-based fallback.', error.message);
// Plan B: DOM 内容检测
if (!detectFromDOM()) {
// Plan C: 最终的备用方案
createDisplayPanel({
provider: 'Detection Limited',
cache: 'N/A', pop: 'N/A',
extra: 'CORS policy may have blocked analysis'
});
}
}
}
main().catch(error => {
console.error('[CDN Detector] Initialization failed:', error);
});
})();