247 lines
8.1 KiB
TypeScript
247 lines
8.1 KiB
TypeScript
import { getDNS, isLocalhost } from '@/utils/dns.ts';
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import http from 'http';
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import { UserApp } from './get-user-app.ts';
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import { config, fileStore } from '../module/config.ts';
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import path from 'path';
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import fs from 'fs';
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import { getContentType } from './get-content-type.ts';
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import { createRefreshHtml } from './html/create-refresh-html.ts';
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const api = config?.api || { host: 'kevisual.xiongxiao.me', path: '/api/router' };
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const domain = config?.proxy?.domain || 'kevisual.xiongxiao.me';
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const allowedOrigins = config?.proxy?.allowOrigin || [];
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const home = config?.proxy?.home || '/ai/chat';
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const noProxyUrl = ['/', '/favicon.ico'];
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export const handleRequest = async (req: http.IncomingMessage, res: http.ServerResponse) => {
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if (req.url === '/favicon.ico') {
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res.writeHead(200, { 'Content-Type': 'image/x-icon' });
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res.end('proxy no favicon.ico\n');
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return;
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}
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if (req.url.startsWith('/api/proxy')) {
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return;
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}
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if (req.url.startsWith('/api')) {
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// 代理到 http://codeflow.xiongxiao.me/api
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const _u = new URL(req.url, `http://${api.host}`);
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// 设置代理请求的目标 URL 和请求头
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let header: any = {};
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if (req.headers?.['Authorization']) {
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header.authorization = req.headers['Authorization'];
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} else if (req.headers?.['authorization']) {
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header.authorization = req.headers['authorization'];
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}
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if (req.headers?.['Content-Type']) {
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header['Content-Type'] = req.headers?.['Content-Type'];
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}
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const options = {
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host: _u.hostname,
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path: req.url,
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method: req.method,
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headers: {
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...header,
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},
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};
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if (_u.port) {
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// @ts-ignore
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options.port = _u.port;
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}
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// 创建代理请求
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const proxyReq = http.request(options, (proxyRes) => {
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// 将代理服务器的响应头和状态码返回给客户端
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res.writeHead(proxyRes.statusCode, proxyRes.headers);
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// 将代理响应流写入客户端响应
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proxyRes.pipe(res, { end: true });
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});
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// 处理代理请求的错误事件
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proxyReq.on('error', (err) => {
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console.error(`Proxy request error: ${err.message}`);
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res.writeHead(500, { 'Content-Type': 'text/plain' });
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res.write(`Proxy request error: ${err.message}`);
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});
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// 处理 POST 请求的请求体（传递数据到目标服务器）
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req.pipe(proxyReq, { end: true });
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return;
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}
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if (req.url.startsWith('/api')) {
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res.end('not catch api');
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return;
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}
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const dns = getDNS(req);
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// 配置可以跨域
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// 配置可以访问的域名 localhost, xiongxiao.me
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const _orings = allowedOrigins || [];
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const host = dns.hostName;
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if (
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_orings.some((item) => {
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return host.includes(item);
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})
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) {
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res.setHeader('Access-Control-Allow-Origin', '*');
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}
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res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
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let user, app;
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let domainApp = false;
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if (isLocalhost(dns.hostName)) {
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// 本地开发环境 测试
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// user = 'root';
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// app = 'codeflow';
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// domainApp = true;
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} else {
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// 验证域名
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if (dns.hostName !== domain) {
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// redis获取域名对应的用户和应用
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domainApp = true;
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const data = await UserApp.getDomainApp(dns.hostName);
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if (!data) {
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res.writeHead(404, { 'Content-Type': 'text/plain' });
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res.end('Invalid domain\n');
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return;
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}
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if (!data.user || !data.app) {
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res.writeHead(404, { 'Content-Type': 'text/plain' });
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res.end('Invalid domain config\n');
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return;
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}
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user = data.user;
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app = data.app;
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}
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}
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// const url = req.url;
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const pathname = new URL(req.url, `http://${dns.hostName}`).pathname;
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const url = pathname;
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if (!domainApp && noProxyUrl.includes(url)) {
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if (url === '/') {
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// 获取一下登陆用户，如果没有登陆用户，重定向到ai-chat页面
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// 重定向到
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res.writeHead(302, { Location: home });
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return res.end();
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}
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// 不是域名代理，且是在不代理的url当中
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res.write('No proxy for this URL\n');
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return res.end();
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}
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if (!domainApp) {
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// 原始url地址
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const urls = url.split('/');
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if (urls.length < 3) {
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console.log('urls errpr', urls);
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res.writeHead(404, { 'Content-Type': 'text/html' });
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res.write('Invalid Proxy URL\n');
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return res.end();
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}
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const [_, _user, _app] = urls;
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if (_app && urls.length === 3) {
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// 重定向到
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res.writeHead(302, { Location: `${url}/` });
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return res.end();
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}
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if (!_user || !_app) {
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res.write('Invalid URL\n');
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return res.end();
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}
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user = _user;
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app = _app;
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}
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const userApp = new UserApp({ user, app });
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let isExist = await userApp.getExist();
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if (!isExist) {
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try {
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const { code, loading } = await userApp.setCacheData();
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if (loading || code === 20000) {
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res.writeHead(200, { 'Content-Type': 'text/html; charset=utf-8' });
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res.end(createRefreshHtml(user, app));
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return;
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}
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res.writeHead(500, { 'Content-Type': 'text/html; charset=utf-8' });
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res.write('Not Found App\n');
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res.end();
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// 不存在就一定先返回loading状态。
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return;
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} catch (error) {
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console.error('setCacheData error', error);
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res.writeHead(500, { 'Content-Type': 'text/html; charset=utf-8' });
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res.write('Server Error\n');
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res.end();
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userApp.setLoaded('error', 'setCacheData error');
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return;
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}
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}
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const indexFile = isExist; // 已经必定存在了
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try {
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let appFileUrl: string;
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if (domainApp) {
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appFileUrl = (url + '').replace(`/`, '');
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} else {
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appFileUrl = (url + '').replace(`/${user}/${app}/`, '');
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}
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const appFile = await userApp.getFile(appFileUrl);
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if (!appFile) {
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const [indexFilePath, etag] = indexFile.split('||');
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const contentType = getContentType(indexFilePath);
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const isHTML = contentType.includes('html');
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const filePath = path.join(fileStore, indexFilePath);
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if (!userApp.fileCheck(filePath)) {
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res.writeHead(500, { 'Content-Type': 'text/html; charset=utf-8' });
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res.write('File expired, Not Found\n');
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res.end();
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await userApp.clearCacheData();
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return;
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}
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// 如果 content是 'application/octet-stream' 会下载文件, 添加文件后缀
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if (contentType === 'application/octet-stream') {
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// 提取文件名，只保留文件名而不是整个路径
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const fileName = path.basename(indexFilePath);
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res.setHeader('Content-Disposition', `attachment; filename=${fileName}`);
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}
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// 不存在的文件,返回indexFile的文件
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res.writeHead(200, { 'Content-Type': contentType, 'Cache-Control': isHTML ? 'no-cache' : 'public, max-age=3600' });
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const readStream = fs.createReadStream(filePath);
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readStream.pipe(res);
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return;
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} else {
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const [appFilePath, eTag] = appFile.split('||');
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// 检查 If-None-Match 头判断缓存是否有效
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if (req.headers['if-none-match'] === eTag) {
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res.statusCode = 304; // 内容未修改
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res.end();
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return;
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}
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const filePath = path.join(fileStore, appFilePath);
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let contentType = getContentType(filePath);
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const isHTML = contentType.includes('html');
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// 如果 content是 'application/octet-stream' 会下载文件, 添加文件后缀
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if (contentType === 'application/octet-stream') {
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// 提取文件名，只保留文件名而不是整个路径
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const fileName = path.basename(appFilePath);
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res.setHeader('Content-Disposition', `attachment; filename=${fileName}`);
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}
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res.writeHead(200, {
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'Content-Type': contentType,
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'Cache-Control': isHTML ? 'no-cache' : 'public, max-age=3600', // 设置缓存时间为 1 小时
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ETag: eTag,
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});
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if (!userApp.fileCheck(filePath)) {
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console.error('File expired', filePath);
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res.end('File expired\n');
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await userApp.clearCacheData();
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return;
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}
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const readStream = fs.createReadStream(filePath);
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readStream.pipe(res);
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return;
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}
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} catch (error) {
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console.error('getFile error', error);
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}
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};
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