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| const config = { no_ref: "off", cors: "on", unique_link: true, safe_browsing_api_key: "", expiration_ttl: 0, }
const html404 = `<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>404 未找到 - 短链接系统</title> <style> body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; text-align: center; padding: 80px 20px; background: #f3f4f6; color: #333; } .card { background: white; max-width: 450px; margin: 0 auto; padding: 40px; border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); } h1 { font-size: 64px; color: #ef4444; margin: 0 0 10px 0; } p { font-size: 16px; color: #666; margin-bottom: 30px; } a { color: #667eea; text-decoration: none; font-weight: bold; } a:hover { text-decoration: underline; } .footer { margin-top: 40px; font-size: 13px; color: #999; border-top: 1px solid #eee; padding-top: 20px; } </style> </head> <body> <div class="card"> <h1>404</h1> <p>抱歉,您访问的短链接不存在或已过期。</p> <p><a href="/">返回首页生成新链接</a></p> <div class="footer"> Powered by Cloudflare Workers | <a href="https://www.cunzhangblog.com" target="_blank">Web3村长博客</a> </div> </div> </body> </html>`
const htmlIndex = `<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>极简短链接生成器</title> <style> * { box-sizing: border-box; margin: 0; padding: 0; } body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); min-height: 100vh; display: flex; flex-direction: column; justify-content: space-between; align-items: center; padding: 20px; color: #fff; } .container { background: rgba(255, 255, 255, 0.96); border-radius: 16px; padding: 40px 30px; width: 100%; max-width: 500px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); text-align: center; color: #333; margin: auto; } h1 { font-size: 26px; margin-bottom: 10px; color: #2d3748; } p.subtitle { color: #718096; font-size: 14px; margin-bottom: 30px; } .input-group { display: flex; flex-direction: column; gap: 15px; } input[type="url"] { width: 100%; padding: 14px; border: 2px solid #e2e8f0; border-radius: 8px; font-size: 15px; outline: none; transition: border-color 0.2s; } input[type="url"]:focus { border-color: #667eea; } button { width: 100%; padding: 14px; background: #667eea; color: white; border: none; border-radius: 8px; font-size: 16px; font-weight: bold; cursor: pointer; transition: background 0.2s; } button:hover { background: #5a67d8; } .result-box { margin-top: 25px; padding: 15px; background: #f7fafc; border-radius: 8px; border: 1px dashed #cbd5e0; display: none; word-break: break-all; } .result-title { font-size: 13px; color: #4a5568; font-weight: bold; margin-bottom: 8px; } .result-url { font-size: 18px; color: #2b6cb0; margin-bottom: 12px; display: block; word-break: break-all; text-decoration: none; font-weight: 500; } .copy-btn { padding: 8px 16px; background: #48bb78; color: white; border: none; border-radius: 6px; font-size: 13px; cursor: pointer; transition: background 0.2s; } .copy-btn:hover { background: #38a169; } footer { text-align: center; font-size: 13px; color: rgba(255,255,255,0.8); margin-top: 20px; } footer a { color: #fff; text-decoration: underline; font-weight: 500; } </style> </head> <body> <div class="container"> <h1>极简短链接生成器</h1> <p class="subtitle">请输入要缩短的长链接(须包含 http:// 或 https://)</p> <div class="input-group"> <input type="url" id="longUrl" placeholder="https://example.com" required> <button onclick="shortenUrl()">立即生成</button> </div> <div class="result-box" id="resultBox"> <div class="result-title">🎉 短链接生成成功:</div> <a href="#" id="shortUrl" target="_blank" class="result-url"></a> <button class="copy-btn" id="copyBtn" onclick="copyToClipboard()">复制链接</button> </div> </div> <footer> <p>由 Cloudflare Workers 强力驱动 | <a href="https://www.cunzhangblog.com" target="_blank">Web3村长博客</a></p> </footer> <script> async function shortenUrl() { const longUrl = document.getElementById('longUrl').value.trim(); if(!longUrl) { alert('请输入有效的网址!'); return; } if(!longUrl.startsWith('http://') && !longUrl.startsWith('https://')) { alert('网址格式错误!必须以 http:// 或 https:// 开头'); return; } const btn = document.querySelector('button'); btn.disabled = true; btn.innerText = '生成中...'; try { const res = await fetch(window.location.pathname, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ url: longUrl }) }); const data = await res.json(); if(res.ok && data.short_url) { const finalUrl = window.location.origin + data.short_url; const shortUrlLink = document.getElementById('shortUrl'); shortUrlLink.href = finalUrl; shortUrlLink.innerText = finalUrl; document.getElementById('resultBox').style.display = 'block'; } else { alert('生成失败: ' + (data.error || '未知错误')); } } catch(e) { alert('网络错误,请稍后重试'); } finally { btn.disabled = false; btn.innerText = '立即生成'; } } function copyToClipboard() { const urlText = document.getElementById('shortUrl').innerText; navigator.clipboard.writeText(urlText).then(() => { const copyBtn = document.getElementById('copyBtn'); copyBtn.innerText = '复制成功!'; copyBtn.style.background = '#38a169'; setTimeout(() => { copyBtn.innerText = '复制链接'; copyBtn.style.background = '#48bb78'; }, 2000); }).catch(err => { alert('复制失败,请手动选择链接进行复制'); }); } </script> </body> </html>`
let response_header = { "content-type": "text/html;charset=UTF-8", }
if (config.cors == "on") { response_header = { "content-type": "application/json;charset=UTF-8", "Access-Control-Allow-Origin": "*", "Access-Control-Allow-Methods": "POST, OPTIONS", "Access-Control-Allow-Headers": "Content-Type", } }
async function randomString(len) { len = len || 6; let $chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'; let maxPos = $chars.length; let result = ''; for (let i = 0; i < len; i++) { result += $chars.charAt(Math.floor(Math.random() * maxPos)); } return result; }
async function sha512(url) { url = new TextEncoder().encode(url) const url_digest = await crypto.subtle.digest({ name: "SHA-512" }, url) const hashArray = Array.from(new Uint8Array(url_digest)); return hashArray.map(b => b.toString(16).padStart(2, '0')).join(''); }
async function checkURL(URL) { let str = URL; let Expression = /http(s)?:\/\/([\w-]+\.)+[\w-]+(\/[\w- .\/?%&=]*)?/; let objExp = new RegExp(Expression); if (objExp.test(str) == true) { return str[0] == 'h'; } else { return false; } }
function getKvPutOptions() { const MIN_TTL = 60; const rawTtl = Number(config.expiration_ttl); const hasValidTtl = Number.isFinite(rawTtl) && rawTtl >= MIN_TTL; return hasValidTtl ? { expirationTtl: Math.floor(rawTtl) } : {}; }
async function save_url(URL) { let random_key = await randomString() let is_exist = await LINKS.get(random_key) if (is_exist == null) { await LINKS.put(random_key, URL, getKvPutOptions()); return random_key; } else { return save_url(URL); } }
async function is_url_exist(url_sha512) { let is_exist = await LINKS.get(url_sha512) return is_exist || false; }
async function is_url_safe(url) { let raw = JSON.stringify({ "client": { "clientId": "Url-Shorten-Worker", "clientVersion": "1.0.7" }, "threatInfo": { "threatTypes": ["MALWARE", "SOCIAL_ENGINEERING", "POTENTIALLY_HARMFUL_APPLICATION", "UNWANTED_SOFTWARE"], "platformTypes": ["ANY_PLATFORM"], "threatEntryTypes": ["URL"], "threatEntries": [{ "url": url }] } });
let requestOptions = { method: 'POST', body: raw, redirect: 'follow' }; try { let result = await fetch("https://safebrowsing.googleapis.com/v4/threatMatches:find?key=" + config.safe_browsing_api_key, requestOptions) result = await result.json() return Object.keys(result).length === 0; } catch (e) { return true; } }
async function handleRequest(request) { if (request.method === "OPTIONS") { return new Response("", { headers: response_header }) }
if (request.method === "POST") { let req = await request.json() if (!await checkURL(req["url"])) { return new Response(JSON.stringify({ status: 400, error: "网址格式不正确(必须包含 http:// 或 https://)" }), { headers: response_header, status: 400 }) }
let random_key if (config.unique_link) { let url_sha512 = await sha512(req["url"]) let url_key = await is_url_exist(url_sha512) if (url_key) { random_key = url_key } else { random_key = await save_url(req["url"]) await LINKS.put(url_sha512, random_key, getKvPutOptions()) } } else { random_key = await save_url(req["url"]) } return new Response(JSON.stringify({ status: 200, key: "/" + random_key, short_url: "/" + random_key }), { headers: response_header }) }
const requestURL = new URL(request.url) const path = requestURL.pathname.split("/")[1] const params = requestURL.search
if (!path) { return new Response(htmlIndex, { headers: { "content-type": "text/html;charset=UTF-8" }, }) }
const value = await LINKS.get(path) let location = params ? value + params : value
if (location) { if (config.safe_browsing_api_key) { if (!(await is_url_safe(location))) { let warning_page = await fetch("https://xytom.github.io/Url-Shorten-Worker/safe-browsing.html") warning_page = await warning_page.text() warning_page = warning_page.replace(/{Replace}/gm, location) return new Response(warning_page, { headers: { "content-type": "text/html;charset=UTF-8" } }) } }
if (config.no_ref == "on") { let no_ref = await fetch("https://xytom.github.io/Url-Shorten-Worker/no-ref.html") no_ref = await no_ref.text() no_ref = no_ref.replace(/{Replace}/gm, location) return new Response(no_ref, { headers: { "content-type": "text/html;charset=UTF-8" } }) } else { return Response.redirect(location, 302) } } return new Response(html404, { headers: { "content-type": "text/html;charset=UTF-8" }, status: 404 }) }
addEventListener("fetch", async event => { event.respondWith(handleRequest(event.request)) })
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