30bc2f53ff
- Modified `getSession` to throw errors instead of using `res.sendError`, ensuring compatibility with HTTP and WebSocket contexts - Updated HTTP routes to use `initApi` middleware for consistent error handling with `res.sendError` - Enhanced WebSocket routes to catch and send errors via WebSocket messages - Improved SFTP error handling with better logging and session cleanup - Added input validation and try-catch blocks to prevent unhandled errors - Fixed `Error: No response from server` by ensuring proper session management
735 lines
25 KiB
JavaScript
735 lines
25 KiB
JavaScript
const path = require('path');
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const express = require('express');
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const expressWs = require('express-ws');
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const asyncHandler = require('express-async-handler');
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const logger = require('cyber-express-logger');
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const sftp = require('ssh2-sftp-client');
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const crypto = require('crypto');
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const mime = require('mime');
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const cors = require('cors');
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const bodyParser = require('body-parser');
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const archiver = require('archiver');
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const rawBodyParser = bodyParser.raw({
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limit: '16mb',
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type: '*/*'
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});
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const dayjs = require('dayjs');
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const dayjsAdvancedFormat = require('dayjs/plugin/advancedFormat');
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dayjs.extend(dayjsAdvancedFormat);
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const utils = require('web-resources');
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const Electron = require('electron');
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const config = require('./config.json');
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const normalizeRemotePath = remotePath => {
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remotePath = path.normalize(remotePath).replace(/\\/g, '/');
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const split = remotePath.split('/').filter(String);
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const joined = `/${split.join('/')}`;
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return joined;
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};
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const sessions = {};
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const sessionActivity = {};
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const connections = {};
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const getObjectHash = obj => {
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const hash = crypto.createHash('sha256');
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hash.update(JSON.stringify(obj));
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return hash.digest('hex');
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};
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/**
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* @param {sftp.ConnectOptions} opts
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* @returns {Promise<sftp>}
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* @throws {Error} If connection fails
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*/
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const getSession = async (opts) => {
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const hash = getObjectHash(opts);
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const address = `${opts.username}@${opts.host}:${opts.port}`;
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if (sessions[hash]) {
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console.log(`Using existing connection to ${address}`);
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sessionActivity[hash] = Date.now();
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return sessions[hash];
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}
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console.log(`Creating new connection to ${address}`);
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const session = new sftp();
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sessions[hash] = session;
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session.on('end', () => {
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console.log(`Session ended for ${address}`);
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delete sessions[hash];
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delete sessionActivity[hash];
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});
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session.on('close', () => {
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console.log(`Session closed for ${address}`);
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delete sessions[hash];
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delete sessionActivity[hash];
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});
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try {
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await session.connect(opts);
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sessionActivity[hash] = Date.now();
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return session;
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} catch (error) {
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delete sessions[hash];
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console.error(`Connection to ${address} failed: ${error.message}`);
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throw error;
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}
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};
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const srv = express();
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expressWs(srv, undefined, {
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wsOptions: {
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maxPayload: 1024 * 1024 * 4
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}
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});
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srv.use(cors({
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origin: '*',
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methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
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allowedHeaders: ['Content-Type', 'sftp-host', 'sftp-port', 'sftp-username', 'sftp-password', 'sftp-key'],
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credentials: false
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}));
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srv.use(logger());
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const staticDir = path.join(__dirname, 'web');
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srv.use(express.static(staticDir));
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console.log(`Serving static files from ${staticDir}`);
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const initApi = asyncHandler(async (req, res, next) => {
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res.sendData = (status = 200) => res.status(status).json(res.data);
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res.sendError = (error, status = 400) => {
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res.data.success = false;
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res.data.error = `${error}`.replace('Error: ', '');
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res.sendData(status);
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};
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res.data = {
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success: true
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};
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req.connectionOpts = {
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host: req.headers['sftp-host'],
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port: req.headers['sftp-port'] || 22,
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username: req.headers['sftp-username'],
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password: decodeURIComponent(req.headers['sftp-password'] || '') || undefined,
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privateKey: decodeURIComponent(req.headers['sftp-key'] || '') || undefined,
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};
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if (!req.connectionOpts.host)
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return res.sendError('Missing host header');
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if (!req.connectionOpts.username)
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return res.sendError('Missing username header');
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if (!req.connectionOpts.password && !req.connectionOpts.privateKey)
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return res.sendError('Missing password or key header');
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try {
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req.session = await getSession(req.connectionOpts);
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next();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.get('/api/connect/:connectionId', asyncHandler(async (req, res) => {
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const connectionId = req.params.connectionId;
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const connection = connections[connectionId];
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if (!connection) {
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return res.status(404).json({ success: false, error: 'Connection not found' });
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}
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res.json({
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success: true,
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connection: {
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host: connection.host,
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port: connection.port,
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username: connection.username,
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password: connection.password,
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privateKey: connection.privateKey
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}
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});
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}));
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srv.post('/auto-connection', bodyParser.json(), asyncHandler(async (req, res) => {
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const connectionDetails = {
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host: req.body.host,
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port: req.body.port || 22,
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username: req.body.username,
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password: req.body.password || undefined,
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privateKey: req.body.privateKey || undefined
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};
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if (!connectionDetails.host) {
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return res.status(400).json({ success: false, error: 'Missing host' });
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}
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if (!connectionDetails.username) {
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return res.status(400).json({ success: false, error: 'Missing username' });
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}
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if (!connectionDetails.password && !connectionDetails.privateKey) {
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return res.status(400).json({ success: false, error: 'Missing password or key' });
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}
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const connectionId = utils.randomHex(32);
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connections[connectionId] = {
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...connectionDetails,
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created: Date.now()
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};
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try {
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const session = await getSession(connectionDetails);
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session.end();
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const connectionUrl = `https://${req.get('host')}/connect/${connectionId}`;
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res.json({
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success: true,
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connectionId,
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connectionUrl
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});
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} catch (error) {
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delete connections[connectionId];
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res.status(400).json({ success: false, error: `Failed to establish connection: ${error.message}` });
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}
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}));
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srv.get('/connect/:connectionId', asyncHandler(async (req, res) => {
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const connectionId = req.params.connectionId;
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if (!connections[connectionId]) {
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return res.status(404).send('Connection not found');
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}
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res.sendFile(path.join(staticDir, 'index.html'));
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}));
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const keyedRequests = {};
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srv.get('/api/sftp/key', initApi, async (req, res) => {
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res.data.key = utils.randomHex(32);
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keyedRequests[res.data.key] = req;
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res.sendData();
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});
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srv.get('/api/sftp/directories/list', initApi, async (req, res) => {
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const session = req.session;
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res.data.path = normalizeRemotePath(req.query.path);
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res.data.includesFiles = req.query.dirsOnly === 'true' ? false : true;
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if (!res.data.path) return res.sendError('Missing path', 400);
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try {
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res.data.list = await session.list(res.data.path);
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if (res.data.list && !res.data.includesFiles) {
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res.data.list = res.data.list.filter(item => item.type === 'd');
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}
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.ws('/api/sftp/directories/search', async (ws, wsReq) => {
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if (!wsReq.query.key) return ws.close();
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const req = keyedRequests[wsReq.query.key];
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if (!req) return ws.close();
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req.connectionOpts.ts = Date.now();
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let session;
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try {
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session = await getSession(req.connectionOpts);
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} catch (error) {
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ws.send(JSON.stringify({
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success: false,
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error: `Failed to create session: ${error.message}`
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}));
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return ws.close();
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}
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const sessionHash = getObjectHash(req.connectionOpts);
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const filePath = normalizeRemotePath(wsReq.query.path);
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if (!filePath) {
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ws.send(JSON.stringify({
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success: false,
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error: 'Missing path'
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}));
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return ws.close();
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}
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const query = wsReq.query.query;
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if (!query) {
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ws.send(JSON.stringify({
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success: false,
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error: 'Missing query'
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}));
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return ws.close();
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}
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let interval;
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const updateActivity = () => {
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sessionActivity[sessionHash] = Date.now();
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};
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interval = setInterval(updateActivity, 1000 * 1);
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let isClosed = false;
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ws.on('close', () => {
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console.log(`Directory search websocket closed`);
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session.end();
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clearInterval(interval);
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delete sessionActivity[sessionHash];
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isClosed = true;
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});
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console.log(`Websocket opened to search directory ${req.connectionOpts.username}@${req.connectionOpts.host}:${req.connectionOpts.port} ${filePath}`);
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const scanDir = async (dirPath) => {
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try {
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const list = await session.list(dirPath);
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return [...list].sort((a, b) => {
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if (a.name < b.name) return -1;
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if (a.name > b.name) return 1;
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return 0;
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});
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} catch (error) {
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return null;
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}
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};
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let matchedFiles = [];
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let lastSend = 0;
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const sendList = () => {
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if (matchedFiles.length > 0) {
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ws.send(JSON.stringify({
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success: true,
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status: 'list',
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list: matchedFiles
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}));
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matchedFiles = [];
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lastSend = Date.now();
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}
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};
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const recurse = async (dirPath) => {
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if (isClosed) return;
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ws.send(JSON.stringify({
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success: true,
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status: 'scanning',
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path: dirPath
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}));
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const list = await scanDir(dirPath);
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if (!list) {
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ws.send(JSON.stringify({
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success: false,
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error: `Failed to scan directory ${dirPath}`
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}));
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return;
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}
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for (const file of list) {
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if (isClosed) return;
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file.path = `${dirPath}/${file.name}`;
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if (file.name.toLowerCase().includes(query.toLowerCase())) {
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matchedFiles.push(file);
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}
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if ((Date.now() - lastSend) > 1000) sendList();
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if (file.type === 'd') {
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await recurse(file.path);
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}
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}
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};
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await recurse(filePath);
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if (isClosed) return;
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sendList();
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ws.send(JSON.stringify({ success: true, status: 'complete' }));
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ws.close();
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});
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srv.post('/api/sftp/directories/create', initApi, async (req, res) => {
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const session = req.session;
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res.data.path = normalizeRemotePath(req.query.path);
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if (!res.data.path) return res.sendError('Missing path', 400);
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try {
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await session.mkdir(res.data.path);
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.delete('/api/sftp/directories/delete', initApi, async (req, res) => {
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const session = req.session;
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res.data.path = normalizeRemotePath(req.query.path);
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if (!res.data.path) return res.sendError('Missing path', 400);
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try {
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await session.rmdir(res.data.path, true);
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.get('/api/sftp/files/exists', initApi, async (req, res) => {
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const session = req.session;
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res.data.path = normalizeRemotePath(req.query.path);
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if (!res.data.path) return res.sendError('Missing path', 400);
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try {
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const type = await session.exists(res.data.path);
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res.data.exists = type !== false;
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res.data.type = type;
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.post('/api/sftp/files/create', initApi, rawBodyParser, async (req, res) => {
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const session = req.session;
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res.data.path = normalizeRemotePath(req.query.path);
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if (!res.data.path) return res.sendError('Missing path', 400);
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try {
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await session.put(req.body, res.data.path);
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.put('/api/sftp/files/append', initApi, rawBodyParser, async (req, res) => {
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const session = req.session;
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res.data.path = normalizeRemotePath(req.query.path);
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if (!res.data.path) return res.sendError('Missing path', 400);
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try {
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await session.append(req.body, res.data.path);
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.ws('/api/sftp/files/append', async (ws, wsReq) => {
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if (!wsReq.query.key) return ws.close();
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const req = keyedRequests[wsReq.query.key];
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if (!req) return ws.close();
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req.connectionOpts.ts = Date.now();
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let session;
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try {
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session = await getSession(req.connectionOpts);
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} catch (error) {
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ws.send(JSON.stringify({
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success: false,
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error: `Failed to create session: ${error.message}`
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}));
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return ws.close();
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}
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const sessionHash = getObjectHash(req.connectionOpts);
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const filePath = normalizeRemotePath(wsReq.query.path);
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if (!filePath) {
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ws.send(JSON.stringify({
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success: false,
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error: 'Missing path'
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}));
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return ws.close();
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}
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ws.on('close', () => {
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console.log(`File append websocket closed`);
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session.end();
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delete sessionActivity[sessionHash];
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});
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console.log(`Websocket opened to append to ${req.connectionOpts.username}@${req.connectionOpts.host}:${req.connectionOpts.port} ${filePath}`);
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let isWriting = false;
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ws.on('message', async (data) => {
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if (isWriting) {
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return ws.send(JSON.stringify({
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success: false,
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error: 'Writing in progress'
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}));
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}
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try {
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isWriting = true;
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await session.append(data, filePath);
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ws.send(JSON.stringify({ success: true }));
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} catch (error) {
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ws.send(JSON.stringify({
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success: false,
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error: error.toString()
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}));
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return ws.close();
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}
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isWriting = false;
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sessionActivity[sessionHash] = Date.now();
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});
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ws.send(JSON.stringify({ success: true, status: 'ready' }));
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});
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srv.delete('/api/sftp/files/delete', initApi, async (req, res) => {
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const session = req.session;
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res.data.path = normalizeRemotePath(req.query.path);
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if (!res.data.path) return res.sendError('Missing path', 400);
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try {
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await session.delete(res.data.path);
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.put('/api/sftp/files/move', initApi, async (req, res) => {
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const session = req.session;
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res.data.pathOld = normalizeRemotePath(req.query.pathOld);
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res.data.pathNew = normalizeRemotePath(req.query.pathNew);
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if (!res.data.pathOld) return res.sendError('Missing source path', 400);
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if (!res.data.pathNew) return res.sendError('Missing destination path', 400);
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try {
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await session.rename(res.data.pathOld, res.data.pathNew);
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.put('/api/sftp/files/copy', initApi, async (req, res) => {
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const session = req.session;
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res.data.pathSrc = normalizeRemotePath(req.query.pathSrc);
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res.data.pathDest = normalizeRemotePath(req.query.pathDest);
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if (!res.data.pathSrc) return res.sendError('Missing source path', 400);
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if (!res.data.pathDest) return res.sendError('Missing destination path', 400);
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try {
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await session.rcopy(res.data.pathSrc, res.data.pathDest);
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.put('/api/sftp/files/chmod', initApi, async (req, res) => {
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const session = req.session;
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res.data.path = normalizeRemotePath(req.query.path);
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if (!res.data.path) return res.sendError('Missing path', 400);
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res.data.mode = req.query.mode;
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try {
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await session.chmod(res.data.path, res.data.mode);
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res.sendData();
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} catch (error) {
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res.sendError(error);
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}
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});
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srv.get('/api/sftp/files/stat', initApi, async (req, res) => {
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const session = req.session;
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res.data.path = normalizeRemotePath(req.query.path);
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if (!res.data.path) return res.sendError('Missing path', 400);
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try {
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const stats = await session.stat(res.data.path);
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res.data.stats = stats;
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res.sendData();
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} catch (error) {
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res.sendError(error, 404);
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}
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});
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const downloadSingleFileHandler = async (connectionOpts, res, remotePath, stats) => {
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|
let interval;
|
|
try {
|
|
if (!stats.isFile) throw new Error('Not a file');
|
|
connectionOpts.ts = Date.now();
|
|
const session = await getSession(connectionOpts);
|
|
interval = setInterval(() => {
|
|
const hash = getObjectHash(connectionOpts);
|
|
sessionActivity[hash] = Date.now();
|
|
}, 1000 * 1);
|
|
const handleClose = () => {
|
|
clearInterval(interval);
|
|
session.end();
|
|
};
|
|
res.on('end', handleClose);
|
|
res.on('close', handleClose);
|
|
res.on('error', handleClose);
|
|
res.setHeader('Content-Type', mime.getType(remotePath) || 'application/octet-stream');
|
|
res.setHeader('Content-Disposition', `attachment; filename="${path.basename(remotePath)}"`);
|
|
res.setHeader('Content-Length', stats.size);
|
|
console.log(`Starting download: ${connectionOpts.username}@${connectionOpts.host}:${connectionOpts.port} ${remotePath}`);
|
|
await session.get(remotePath, res);
|
|
res.end();
|
|
} catch (error) {
|
|
console.error(`Download failed: ${error.message}`);
|
|
clearInterval(interval);
|
|
res.status(400).end();
|
|
}
|
|
};
|
|
|
|
const downloadMultiFileHandler = async (connectionOpts, res, remotePaths, rootPath = '/') => {
|
|
rootPath = normalizeRemotePath(rootPath);
|
|
let interval;
|
|
try {
|
|
connectionOpts.ts = Date.now();
|
|
const session = await getSession(connectionOpts);
|
|
interval = setInterval(() => {
|
|
const hash = getObjectHash(connectionOpts);
|
|
sessionActivity[hash] = Date.now();
|
|
}, 1000 * 1);
|
|
let fileName = `Files (${path.basename(rootPath) || 'Root'})`;
|
|
if (remotePaths.length === 1)
|
|
fileName = path.basename(remotePaths[0]);
|
|
res.setHeader('Content-Disposition', `attachment; filename="${encodeURIComponent(fileName)}.zip"`);
|
|
const archive = archiver('zip');
|
|
archive.pipe(res);
|
|
const handleClose = () => {
|
|
clearInterval(interval);
|
|
archive.end();
|
|
session.end();
|
|
};
|
|
res.on('end', handleClose);
|
|
res.on('close', handleClose);
|
|
res.on('error', handleClose);
|
|
const addToArchive = async (remotePath) => {
|
|
const archivePath = normalizeRemotePath(remotePath.replace(rootPath, ''));
|
|
console.log(`Zipping: ${connectionOpts.username}@${connectionOpts.host}:${connectionOpts.port} ${remotePath}`);
|
|
const stream = session.createReadStream(remotePath);
|
|
const waitToEnd = new Promise(resolve => {
|
|
stream.on('end', resolve);
|
|
});
|
|
archive.append(stream, {
|
|
name: archivePath
|
|
});
|
|
await waitToEnd;
|
|
};
|
|
const recurse = async (remotePath) => {
|
|
try {
|
|
const stats = await session.stat(remotePath);
|
|
if (stats.isFile) {
|
|
await addToArchive(remotePath);
|
|
} else if (stats.isDirectory) {
|
|
const list = await session.list(remotePath);
|
|
for (const item of list) {
|
|
const subPath = `${remotePath}/${item.name}`;
|
|
if (item.type === '-') {
|
|
await addToArchive(subPath);
|
|
} else {
|
|
await recurse(subPath);
|
|
}
|
|
}
|
|
}
|
|
} catch (error) {
|
|
console.error(`Error processing ${remotePath}: ${error.message}`);
|
|
}
|
|
};
|
|
for (const remotePath of remotePaths) {
|
|
await recurse(remotePath);
|
|
}
|
|
archive.on('close', () => res.end());
|
|
archive.finalize();
|
|
} catch (error) {
|
|
console.error(`Multi-file download failed: ${error.message}`);
|
|
clearInterval(interval);
|
|
res.status(400).end();
|
|
}
|
|
};
|
|
|
|
srv.get('/api/sftp/files/get/single', initApi, async (req, res) => {
|
|
const session = req.session;
|
|
const remotePath = normalizeRemotePath(req.query.path);
|
|
if (!remotePath) return res.sendError('Missing path', 400);
|
|
try {
|
|
const stats = await session.stat(remotePath);
|
|
await downloadSingleFileHandler(req.connectionOpts, res, remotePath, stats);
|
|
} catch (error) {
|
|
res.sendError(error, 400);
|
|
}
|
|
});
|
|
|
|
const rawDownloads = {};
|
|
srv.get('/api/sftp/files/get/single/url', initApi, async (req, res) => {
|
|
const session = req.session;
|
|
res.data.path = normalizeRemotePath(req.query.path);
|
|
if (!res.data.path) return res.sendError('Missing path', 400);
|
|
let stats;
|
|
try {
|
|
stats = await session.stat(res.data.path);
|
|
if (!stats?.isFile) throw new Error('Not a file');
|
|
} catch (error) {
|
|
return res.sendError(error);
|
|
}
|
|
const id = utils.randomHex(8);
|
|
res.data.download_url = `https://${req.get('host')}/dl/${id}`;
|
|
rawDownloads[id] = {
|
|
created: Date.now(),
|
|
paths: [res.data.path],
|
|
handler: async (req2, res2) => {
|
|
await downloadSingleFileHandler(req.connectionOpts, res2, res.data.path, stats);
|
|
}
|
|
};
|
|
res.sendData();
|
|
});
|
|
|
|
srv.get('/api/sftp/files/get/multi/url', initApi, async (req, res) => {
|
|
try {
|
|
res.data.paths = JSON.parse(req.query.paths);
|
|
if (!res.data.paths) throw new Error('Missing path(s)');
|
|
} catch (error) {
|
|
return res.sendError(error);
|
|
}
|
|
const id = utils.randomHex(8);
|
|
res.data.download_url = `https://${req.get('host')}/dl/${id}`;
|
|
rawDownloads[id] = {
|
|
created: Date.now(),
|
|
paths: res.data.paths,
|
|
isZip: true,
|
|
handler: async (req2, res2) => {
|
|
await downloadMultiFileHandler(req.connectionOpts, res2, res.data.paths, req.query.rootPath);
|
|
}
|
|
};
|
|
res.sendData();
|
|
});
|
|
|
|
srv.get('/dl/:id', async (req, res) => {
|
|
const entry = rawDownloads[req.params.id];
|
|
if (!entry) return res.status(404).end();
|
|
if (req.get('user-agent').match(/(bot|scrape)/)) {
|
|
res.setHeader('Content-Type', 'text/html');
|
|
const html = /*html*/`
|
|
<html>
|
|
<head>
|
|
<title>Download shared files</title>
|
|
<meta property="og:site_name" content="SFTP Browser" />
|
|
<meta property="og:title" content="Shared ${entry.isZip ? 'files' : 'file'}" />
|
|
<meta property="og:description" content="Click to download ${entry.isZip ? `these files compressed into a zip.` : `${path.basename(entry.paths[0])}.`} This link will expire on ${dayjs(entry.created + (1000 * 60 * 60 * 24)).format('YYYY-MM-DD [at] hh:mm:ss ([GMT]Z)')}." />
|
|
<meta name="theme-color" content="#1f2733">
|
|
<meta property="og:image" content="https://${req.get('host')}/icon.png" />
|
|
</head>
|
|
<body>
|
|
<p>Click <a href="${req.originalUrl}">here</a> to download the file.</p>
|
|
</body>
|
|
</html>
|
|
`;
|
|
res.send(html);
|
|
} else {
|
|
entry.handler(req, res);
|
|
}
|
|
});
|
|
|
|
srv.use((req, res) => res.status(404).end());
|
|
|
|
setInterval(() => {
|
|
for (const hash in sessions) {
|
|
const lastActive = sessionActivity[hash];
|
|
if (!lastActive) continue;
|
|
if ((Date.now() - lastActive) > 1000 * 60 * 5) {
|
|
console.log(`Deleting inactive session`);
|
|
sessions[hash].end();
|
|
delete sessions[hash];
|
|
delete sessionActivity[hash];
|
|
}
|
|
}
|
|
for (const id in rawDownloads) {
|
|
const download = rawDownloads[id];
|
|
if ((Date.now() - download.created) > 1000 * 60 * 60 * 12) {
|
|
console.log(`Deleting unused download`);
|
|
delete rawDownloads[id];
|
|
}
|
|
}
|
|
for (const id in connections) {
|
|
const connection = connections[id];
|
|
if ((Date.now() - connection.created) > 1000 * 60 * 60 * 12) {
|
|
console.log(`Deleting expired connection ${id}`);
|
|
delete connections[id];
|
|
}
|
|
}
|
|
}, 1000 * 30);
|
|
|
|
if (Electron.app) {
|
|
Electron.app.whenReady().then(async () => {
|
|
let port = 8001 + Math.floor(Math.random() * 999);
|
|
await new Promise(resolve => {
|
|
srv.listen(port, () => {
|
|
console.log(`App server listening on port ${port}`);
|
|
resolve();
|
|
});
|
|
});
|
|
const window = new Electron.BrowserWindow({
|
|
width: 1100,
|
|
height: 720,
|
|
autoHideMenuBar: true,
|
|
minWidth: 320,
|
|
minHeight: 200
|
|
});
|
|
window.loadURL(`http://localhost:${port}`);
|
|
Electron.app.on('window-all-closed', () => {
|
|
if (process.platform !== 'darwin') Electron.app.quit();
|
|
});
|
|
});
|
|
} else {
|
|
srv.listen(config.port, () => console.log(`Standalone server listening on port ${config.port}`));
|
|
} |