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worker.js
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addEventListener('fetch', event => {
event.respondWith(handleRequest(event.request))
})
async function handleRequest(request) {
const url = new URL(request.url);
// 处理 OPTIONS 请求（CORS 预检）
if (request.method === 'OPTIONS') {
return new Response(null, {
headers: {
'Access-Control-Allow-Origin': '*',
'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS, HEAD, PATCH',
'Access-Control-Allow-Headers': '*',
'Access-Control-Max-Age': '86400',
},
status: 200,
});
}
// 当请求根路径时，显示引导页面
if (url.pathname === '/') {
return createLandingPage();
}
try {
// 解码并构建实际 URL
const actualUrlStr = decodeURIComponent(url.pathname.slice(1)) + url.search + url.hash;
const actualUrl = new URL(actualUrlStr);
// 构建新的请求头
const headers = new Headers(request.headers);
// 设置必要的请求头
headers.set('Origin', `${actualUrl.protocol}//${actualUrl.host}`);
headers.set('Referer', `${actualUrl.protocol}//${actualUrl.host}/`);
headers.set('Host', actualUrl.host);
// 如果没有 User-Agent，设置默认值
if (!headers.get('User-Agent')) {
headers.set('User-Agent', 'Mozilla/5.0');
}
// 创建新的请求
const modifiedRequest = new Request(actualUrl, {
method: request.method,
headers: headers,
body: request.body,
redirect: 'follow',
});
// 发送请求
const response = await fetch(modifiedRequest);
// 构建新的响应头
const responseHeaders = new Headers(response.headers);
responseHeaders.set('Access-Control-Allow-Origin', '*');
// 创建新的响应
const modifiedResponse = new Response(response.body, {
status: response.status,
statusText: response.statusText,
headers: responseHeaders,
});
return modifiedResponse;
} catch (error) {
// 错误处理
console.error(`Error: ${error.message}`);
return new Response(`Error: ${error.message}`, {
status: 500,
headers: {
'Content-Type': 'text/plain',
'Access-Control-Allow-Origin': '*',
},
});
}
}
function createLandingPage() {
const html = `<!DOCTYPE html>
<html lang="en">
<head>
<link rel="shortcut icon" href="https://i-aws.czl.net/r2/2023/06/20/649168ec9d6a8.ico">
<style>
body {
background-color: #fbfbfb;
background-image: url(https://i-aws.czl.net/r2/2023/05/23/pjbczr.webp);
background-size:cover;
font-family: Arial, sans-serif;
display: flex;
flex-direction: column;
justify-content: center;
height: 100vh; /* 让body占据整个视口高度 */
margin: 0;
}
h1 {
text-align: center;
color: white;
}
.container {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}
form {
background-color: white;
box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
padding: 2rem;
border-radius: 8px;
width:100%;
max-width:800px;
margin-left:auto;
margin-right:auto;
}
input {
display: block;
width: 100%;
font-size: 18px;
padding: 15px;
border: solid 1px #ccc;
border-radius: 8px;
margin-bottom:1rem;
}
button {
padding: 15px;
background-color: #0288d1;
color: white;
font-size: 18px;
border: none;
border-radius: 4px;
cursor: pointer;
width: 100%;
}
button:hover {
background-color: #039BE5;
}
input,
button {
box-sizing: border-box;
}
</style>
<meta charset="UTF-8">
<title>CZL镜像</title>
</head>
<body>
<div class="container">
<h1>输入需要镜像的地址</h1>
<form id="proxy-form">
<input type="text" id="url" name="url" placeholder="https://q58.org" required />
<button type="submit">访问</button>
</form>
</div>
<script>
const form = document.getElementById('proxy-form');
form.addEventListener('submit', event => {
event.preventDefault();
const input = document.getElementById('url');
const actualUrl = input.value;
const proxyUrl = '/' + actualUrl;
location.href = proxyUrl;
});
</script>
</body>
</html>`;
return new Response(html, {
headers: {
'Content-Type': 'text/html',
'Access-Control-Allow-Origin': '*',
}
});
}