cloudflare-safeproxy/worker.js at main · eraycc/cloudflare-safeproxy · GitHub

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/*
name: cloudflare安全代理
author: eray
version: v1.0
blog: blog.eray.cc
email: admin#eray.cc

desp: 本项目可以给cf代理设置一个密码，使代理更安全，调用更方便

config set:
需要替换：

密码验证路径（可选）：
/your-pwd-verify-path

越权Api代理前缀路径[用于代理openai等api]
（可以直接注释删除，不使用）:
/your-safe-api-prefix/

访问密码（推荐设置复杂一些）：
your-access-pwd

*/

addEventListener('fetch', event => {
	event.respondWith(handleRequest(event.request))
})

async function handleRequest(request) {

	const url = new URL(request.url);

	// Check if some api direct browse, the path should be hard to guess, u can comment it out if you don't need it
	if (url.pathname.includes('/your-safe-api-prefix/')) {
		return handleApiRequest(request);
	}

	// Check if the request is for password verification
	if (url.pathname === '/your-pwd-verify-path' && request.method === 'POST') {
		const password = await request.text();
		if (verifyPassword(password)) {
			return new Response('success', {
				headers: {
					'Content-Type': 'text/plain'
				},
			});
		} else {
			return new Response('failure', {
				headers: {
					'Content-Type': 'text/plain'
				},
			});
		}
	}

	// Check if password cookie exists
	const savedPassword = request.headers.get('Cookie');

	if (!savedPassword) {
		return createPasswordPage();
	}

	//if exists cookie but is not pwd
	if (savedPassword) {
		const parsedCookies = parseCookies(savedPassword);
		const passwordValue = parsedCookies['password'];
		if (!verifyPassword(passwordValue)) {
			return createPasswordPage();
		}
	}

	// Check if accessing path
	if (url.pathname === '/' || url.pathname === '/proxy/' || url.pathname === '/proxy') {
		return createLandingPage();
	}

	// If password cookie exists and accessing other paths, handle proxying
	return handleProxyRequest(request);
}

async function handleProxyRequest(request) {
	const url = new URL(request.url);

	// Use fixUrl function to ensure valid URL protocol
	const actualUrlStr = fixUrl(url.pathname.replace("/proxy/", "")) + url.search + url.hash;
	const actualUrl = new URL(actualUrlStr);

	const modifiedRequest = new Request(actualUrl, {
		headers: request.headers,
		method: request.method,
		body: request.body,
		redirect: 'follow'
	});

	const response = await fetch(modifiedRequest);
	const modifiedResponse = new Response(response.body, response);

	// Add headers for CORS
	modifiedResponse.headers.set('Access-Control-Allow-Origin', '*');

	return modifiedResponse;
}

async function handleApiRequest(request) {
	const url = new URL(request.url);
	// Use fixUrl function to ensure valid URL protocol
	const actualUrlStr = fixUrl(url.pathname.replace("/your-safe-api-prefix/", "")) + url.search + url.hash;
	const actualUrl = new URL(actualUrlStr);

	const modifiedRequest = new Request(actualUrl, {
		headers: request.headers,
		method: request.method,
		body: request.body,
		redirect: 'follow'
	});

	const response = await fetch(modifiedRequest);
	const modifiedResponse = new Response(response.body, response);

	// Add headers for CORS
	modifiedResponse.headers.set('Access-Control-Allow-Origin', '*');

	return modifiedResponse;
}

function fixUrl(url) {
	if (url.includes("://")) {
		return url;
	} else if (url.includes(':/')) {
		return url.replace(':/', '://');
	} else {
		return "http://" + url;
	}
}

// parse cookie
function parseCookies(cookieString) {
	return cookieString.split(';')
		.reduce((cookies, cookie) => {
			const [name, value] = cookie.trim()
				.split('=');
			cookies[name] = value;
			return cookies;
		}, {});
}

// Create the password verification page
function createPasswordPage() {
	const html = `
    <!DOCTYPE html>
    <html lang="zh-CN">
    <head>
      <meta charset="UTF-8">
      <title>密码验证</title>
    </head>
    <style>
    body {
    background-color: #fbfbfb;
    font-family: Arial, sans-serif;
  }

  h1 {
    text-align: center;
    color: #444;
  }

  .container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }

  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;
  }

  input {
    display: block;
    width: 100%;
    font-size: 18px;
    padding: 15px;
    border: solid 1px #ccc;
    border-radius: 4px;
    margin: 1rem 0;
  }

  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;
  }
    </style>
    <body>
      <h1>密码验证</h1>
      <form id="password-form">
        <input type="password" id="password" name="password" placeholder="请输入访问密码" required />
        <button type="submit">验证密码</button>
      </form>
      <script>
        const form = document.getElementById('password-form');
        form.addEventListener('submit', event => {
          event.preventDefault();
          const input = document.getElementById('password');
          const password = input.value;

          // Send password for verification
          fetch('/your-pwd-verify-path', { method: 'POST', body: password })
            .then(response => response.text())
            .then(result => {
              if (result === 'success') {
                // Password verification successful, set cookie, and redirect to the landing page
                document.cookie = 'password=' + password + '; expires=' + new Date(Date.now() + 7 * 24 * 60 * 60 * 1000).toUTCString();
                location.href = '/proxy/';
              } else {
                alert('密码验证失败！');
              }
            });
        });
      </script>
    </body>
    </html>
  `;

	return new Response(html, {
		headers: {
			'Content-Type': 'text/html'
		}
	});
}

// Create the landing page
function createLandingPage() {
	const html = `
  <!DOCTYPE html>
  <html lang="zh-CN">
  <head>
  <style>
  body {
    background-color: #fbfbfb;
    font-family: Arial, sans-serif;
  }

  h1 {
    text-align: center;
    color: #444;
  }

  .container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }

  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;
  }

  input {
    display: block;
    width: 100%;
    font-size: 18px;
    padding: 15px;
    border: solid 1px #ccc;
    border-radius: 4px;
    margin: 1rem 0;
  }

  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;
  }
  </style>
    <meta charset="UTF-8">
    <title>安全访问</title>
  </head>
  <body>
    <h1>请输入安全访问路径</h1>
    <form id="proxy-form">
      <input type="text" id="url" name="url" placeholder="请输入路径" required />
      <button type="submit">安全访问</button>
    </form>
    <script>
      const form = document.getElementById('proxy-form');
      form.addEventListener('submit', event => {
        event.preventDefault();
        const input = document.getElementById('url');
        const actualUrl = input.value;
        const proxyUrl = '/proxy/' + actualUrl;
        location.href = proxyUrl;
      });
    </script>
  </body>
  </html>
  `;

	return new Response(html, {
		headers: {
			'Content-Type': 'text/html'
		}
	});
}

// Verify the password function
function verifyPassword(savedPassword) {
	// Replace this logic with your actual password verification
	return savedPassword === "your-access-pwd";
}