update
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// @ts-ignore - Still need this for the import as no types exist
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import GuacamoleLite from 'guacamole-lite';
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import express, { Request, Response } from 'express';
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import http from 'http';
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import crypto from 'crypto';
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import cors from 'cors';
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// --- 配置 ---
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const GUAC_WS_PORT = process.env.VNC_WS_PORT || 8082;
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const API_PORT = process.env.VNC_PORT || 9091;
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const GUACD_HOST = process.env.GUACD_HOST || 'localhost';
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const GUACD_PORT = parseInt(process.env.GUACD_PORT || '4822', 10);
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// --- 启动时生成内存加密密钥 ---
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console.log("正在为此会话生成新的内存加密密钥...");
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const ENCRYPTION_KEY_STRING = crypto.randomBytes(32).toString('hex');
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const ENCRYPTION_KEY_BUFFER = Buffer.from(ENCRYPTION_KEY_STRING, 'hex');
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console.log("内存加密密钥已生成。");
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// --- Express 应用设置 ---
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const app = express();
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const apiServer = http.createServer(app);
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const allowedOrigins = [
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process.env.FRONTEND_URL || 'http://localhost:5173',
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process.env.MAIN_BACKEND_URL || 'http://localhost:3000'
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];
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app.use(cors({ origin: allowedOrigins }));
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const guacdOptions = {
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host: GUACD_HOST,
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port: GUACD_PORT,
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};
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const websocketOptions = {
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port: GUAC_WS_PORT,
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host: '0.0.0.0',
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};
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const clientOptions = {
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crypt: {
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// 将实际的密钥 Buffer 传递给 guacamole-lite 用于其内部加密操作
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key: ENCRYPTION_KEY_BUFFER,
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cypher: 'aes-256-cbc' // 确保加密和解密之间的密码算法一致
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},
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// 默认连接设置
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connectionDefaultSettings: {
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// VNC 通常不需要像 RDP 那样的特定默认连接设置
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// 参数将主要通过 API 请求提供
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},
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};
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let guacServer: any;
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try {
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console.log(`[VNC 服务] 正在使用选项初始化 GuacamoleLite: WS 端口=${websocketOptions.port}, Guacd=${guacdOptions.host}:${guacdOptions.port}`);
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guacServer = new GuacamoleLite(websocketOptions, guacdOptions, clientOptions);
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console.log(`[VNC 服务] GuacamoleLite 初始化成功。`);
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if (guacServer.on) {
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guacServer.on('error', (error: Error) => {
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console.error(`[VNC 服务] GuacamoleLite 服务器错误:`, error);
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});
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guacServer.on('connection', (client: any) => {
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const clientId = client.id || '未知客户端ID';
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console.log(`[VNC 服务] Guacd 连接事件触发。客户端 ID: ${clientId}`);
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if (client && typeof client.on === 'function') {
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client.on('disconnect', (reason: string) => {
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console.log(`[VNC 服务] Guacd 连接断开。客户端 ID: ${clientId}, 原因: ${reason || '未知'}`);
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});
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client.on('error', (err: Error) => {
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console.error(`[VNC 服务] Guacd 客户端错误。客户端 ID: ${clientId}, 错误:`, err);
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});
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client.on('message', (message: Buffer | string) => {
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// 在回滚状态下移除了消息处理
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});
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} else {
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// 对没有 'on' 方法的客户端进行最小化处理
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}
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});
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}
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} catch (error) {
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console.error(`[VNC 服务] 初始化 GuacamoleLite 失败:`, error);
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process.exit(1);
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}
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// 更新了 encryptToken 以匹配 guacamole-lite 期望的格式 (aes-256-cbc 和特定的 JSON 结构)
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// 现在直接接受密钥 Buffer 以进行正确的加密操作
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const encryptToken = (data: string, keyBuffer: Buffer): string => {
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try {
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const iv = crypto.randomBytes(16); // AES-CBC 通常使用 16 字节的 IV
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// 使用密钥 Buffer 进行 Node.js 加密操作
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const cipher = crypto.createCipheriv('aes-256-cbc', keyBuffer, iv);
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let encrypted = cipher.update(data, 'utf8', 'base64');
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encrypted += cipher.final('base64');
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// 构建 guacamole-lite 的解密函数期望的 JSON 对象
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const output = {
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iv: iv.toString('base64'),
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value: encrypted
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};
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// 将 JSON 字符串化,然后对整个字符串进行 Base64 编码
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const jsonString = JSON.stringify(output);
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return Buffer.from(jsonString).toString('base64');
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} catch (e) {
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console.error("令牌加密失败:", e);
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throw new Error("令牌加密失败。");
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}
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};
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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app.get('/api/get-vnc-token', (req: any, res: any) => {
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const { hostname, port, password } = req.query; // VNC 主要参数
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if (!hostname || !port || typeof password === 'undefined') {
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return res.status(400).json({ error: '缺少必需的 VNC 参数 (hostname, port, password)' });
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}
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const connectionParams: any = { // 使用 any 类型以允许动态添加参数
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connection: {
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type: 'vnc',
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settings: {
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hostname: hostname as string,
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port: port as string,
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password: password as string,
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// 从查询中包含动态(或默认)的大小参数
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width: String(req.query.width || '1024'),
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height: String(req.query.height || '768'),
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// VNC 特有的参数可以根据需要在这里添加
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// 例如: 'username': req.query.username (如果 VNC 服务器需要)
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}
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}
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};
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// 如果提供了 username,则添加到 settings 中
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if (req.query.username) {
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connectionParams.connection.settings.username = req.query.username as string;
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}
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// Guacamole VNC 支持的其他参数可以类似地添加
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// 例如: 'enable-audio': req.query.enableAudio || 'false'
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try {
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const tokenData = JSON.stringify(connectionParams);
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const encryptedToken = encryptToken(tokenData, ENCRYPTION_KEY_BUFFER);
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res.json({ token: encryptedToken });
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} catch (error) {
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console.error("/api/get-vnc-token 接口出错:", error);
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res.status(500).json({ error: '生成令牌失败' });
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}
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});
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apiServer.listen(API_PORT, () => {
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console.log(`[VNC 服务] API 服务器正在监听端口 ${API_PORT}`);
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console.log(`[VNC 服务] Guacamole WebSocket 服务器应在端口 ${GUAC_WS_PORT} 上运行 (由 GuacamoleLite 管理)`);
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});
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const gracefulShutdown = (signal: string) => {
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console.log(`收到 ${signal} 信号。正在优雅地关闭...`);
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let guacClosed = false;
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let apiClosed = false;
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const tryExit = () => {
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if (guacClosed && apiClosed) {
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console.log("所有服务器已关闭。正在退出。");
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process.exit(0);
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}
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};
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apiServer.close((err) => {
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if (err) {
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console.error("关闭 API 服务器时出错:", err);
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} else {
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console.log("API 服务器已关闭。");
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}
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apiClosed = true;
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tryExit();
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});
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// @ts-ignore - 假设基于通用模式存在 close 方法
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if (typeof guacServer !== 'undefined' && guacServer && typeof guacServer.close === 'function') {
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console.log("正在关闭 Guacamole 服务器..."); // 添加了关闭日志
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// @ts-ignore
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guacServer.close(() => {
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console.log("Guacamole 服务器已关闭。"); // 添加了关闭日志
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guacClosed = true;
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tryExit();
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});
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} else {
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console.log("Guacamole 服务器未运行或不支持 close() 方法。");
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guacClosed = true;
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tryExit();
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}
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// 超时后强制退出
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setTimeout(() => {
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console.error("关闭超时。强制退出。");
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process.exit(1);
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}, 10000); // 10 秒超时
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};
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process.on('SIGINT', () => gracefulShutdown('SIGINT'));
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process.on('SIGTERM', () => gracefulShutdown('SIGTERM'));
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process.on('SIGUSR2', () => {
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gracefulShutdown('SIGUSR2 (nodemon restart)');
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});
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