412 regels
12 KiB
JavaScript
412 regels
12 KiB
JavaScript
'use strict';
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var net = require('net');
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var tls = require('tls');
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var http = require('http');
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var sni = require('sni');
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var url = require('url');
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var jwt = require('jsonwebtoken');
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//var packer = require('tunnel-packer');
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//var Transform = require('stream').Transform;
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var tlsOpts = require('localhost.daplie.com-certificates').merge({});
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var Duplex = require('stream').Duplex;
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var WebSocketServer = require('ws').Server;
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/*
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*
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* Tunnel Packer
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*
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*/
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var packer = require('tunnel-packer');
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var Transform = require('stream').Transform;
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var util = require('util');
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function MyTransform(options) {
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if (!(this instanceof MyTransform)) {
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return new MyTransform(options);
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}
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this.__my_addr = options.address;
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this.__my_service = options.service;
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Transform.call(this, options);
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}
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util.inherits(MyTransform, Transform);
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function transform(me, data, encoding, callback) {
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var address = me.__my_addr;
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address.service = address.service || me.__my_service;
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me.push(packer.pack(address, data));
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callback();
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}
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MyTransform.prototype._transform = function (data, encoding, callback) {
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return transform(this, data, encoding, callback);
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};
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function socketToAddr(socket) {
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return {
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family: socket.remoteFamily || socket._remoteFamily
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, address: socket.remoteAddress || socket._remoteAddress
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, port: socket.remotePort || socket._remotePort
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};
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}
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function addrToId(address) {
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return address.family + ',' + address.address + ',' + address.port;
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}
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function socketToId(socket) {
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return addrToId(socketToAddr(socket));
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}
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require('cluster-store').create().then(function (store) {
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var remotes = {};
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var selfname = 'pokemap.hellabit.com';
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var secret = 'shhhhh';
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var httpServer = http.createServer(function (req, res) {
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console.log('req.socket.encrypted', req.socket.encrypted);
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res.end('Hello, World!');
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});
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var wss = new WebSocketServer({ server: httpServer });
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var tcp3000 = net.createServer();
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wss.on('connection', function (ws) {
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var location = url.parse(ws.upgradeReq.url, true);
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//var token = jwt.decode(location.query.access_token);
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var token;
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try {
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token = jwt.verify(location.query.access_token, secret);
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} catch(e) {
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token = null;
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}
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/*
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if (!token || !token.name) {
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console.log('location, token');
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console.log(location.query.access_token);
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console.log(token);
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}
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*/
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if (!token) {
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ws.send(JSON.stringify({ error: { message: "invalid access token", code: "E_INVALID_TOKEN" } }));
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ws.close();
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return;
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}
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if (!token.name) {
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ws.send(JSON.stringify({ error: { message: "invalid server name", code: "E_INVALID_NAME" } }));
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ws.close();
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return;
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}
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var remote = remotes[token.name] = remotes[token.name] || {};
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var handlers = {
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onmessage: function (opts) {
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// opts.data
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var cid = addrToId(opts);
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var cstream = remote.clients[cid];
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console.log("remote '" + remote.servername + " : " + remote.id + "' has data for '" + cid + "'", opts.data.byteLength);
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if (!cstream) {
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remote.ws.send(packer.pack(opts, null, 'error'));
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return;
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}
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cstream.browser.write(opts.data);
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}
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, onend: function (opts) {
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var cid = addrToId(opts);
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console.log('[TunnelEnd]', cid);
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handlers._onend(cid);
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}
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, onerror: function (opts) {
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var cid = addrToId(opts);
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console.log('[TunnelError]', cid);
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handlers._onend(cid);
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}
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, _onend: function (cid) {
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var c = remote.clients[cid];
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delete remote.clients[cid];
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try {
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c.browser.end();
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} catch(e) {
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// ignore
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}
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try {
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c.wrapped.end();
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} catch(e) {
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// ignore
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}
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}
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};
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// TODO allow more than one remote per servername
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remote.ws = ws;
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remote.servername = token.name;
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remote.id = socketToId(ws.upgradeReq.socket);
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console.log("remote.id", remote.id);
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// TODO allow tls to be decrypted by server if client is actually a browser
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// and we haven't implemented tls in the browser yet
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remote.decrypt = token.decrypt;
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// TODO how to allow a child process to communicate with this one?
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remote.clients = {};
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remote.handle = { address: null, handle: null };
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remote.unpacker = packer.create(handlers);
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ws.on('message', function (chunk) {
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console.log('message from home cloud to tunneler to browser', chunk.byteLength);
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//console.log(chunk.toString());
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remote.unpacker.fns.addChunk(chunk);
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});
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ws.on('close', function () {
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// the remote will handle closing its local connections
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Object.keys(remote.clients).forEach(function (cid) {
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try {
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remote.clients[cid].browser.end();
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} catch(e) {
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// ignore
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}
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});
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});
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ws.on('error', function () {
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// ignore
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// the remote will retry if it wants to
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});
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store.set(token.name, remote.handle);
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});
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tcp3000.listen(3000, function () {
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console.log('listening on 3000');
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});
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var tls3000 = tls.createServer(tlsOpts, function (tlsSocket) {
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console.log('tls connection');
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tlsSocket._remoteFamily = tlsSocket._handle._parentWrap._handle.owner.stream.remoteFamily;
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tlsSocket._remoteAddress = tlsSocket._handle._parentWrap._handle.owner.stream.remoteAddress;
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tlsSocket._remotePort = tlsSocket._handle._parentWrap._handle.owner.stream.remotePort;
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// TODO BUG XXX
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// https://github.com/nodejs/node/issues/8854
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// tlsSocket.remoteAddress = remoteAddress; // causes core dump
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// console.log(tlsSocket.remoteAddress);
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console.log('s', tlsSocket._remoteAddress);
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httpServer.emit('connection', tlsSocket);
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});
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var Dup = {
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write: function (chunk, encoding, cb) {
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//console.log('_write', chunk.byteLength);
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this.__my_socket.write(chunk, encoding);
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cb();
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}
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, read: function (size) {
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//console.log('_read');
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var x = this.__my_socket.read(size);
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if (x) {
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console.log('_read', size);
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this.push(x);
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}
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}
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};
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function connectHttp(servername, socket) {
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console.log("connectHttp('" + servername + "', socket)");
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socket.__my_servername = servername;
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httpServer.emit('connection', socket);
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}
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function connectHttps(servername, socket) {
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// none of these methods work:
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// httpsServer.emit('connection', socket); // this didn't work
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// tlsServer.emit('connection', socket); // this didn't work either
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//console.log('chunkLen', firstChunk.byteLength);
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var myDuplex = new Duplex();
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myDuplex.__my_socket = socket;
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myDuplex._write = Dup.write;
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myDuplex._read = Dup.read;
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console.log('plainSocket.*Address');
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console.log('remote:', socket.remoteAddress);
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console.log('local:', socket.localAddress);
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console.log('address():', socket.address());
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myDuplex.remoteFamily = socket.remoteFamily;
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myDuplex.remoteAddress = socket.remoteAddress;
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myDuplex.remotePort = socket.remotePort;
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myDuplex.localFamily = socket.localFamily;
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myDuplex.localAddress = socket.localAddress;
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myDuplex.localPort = socket.localPort;
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console.log('connectHttps servername', servername);
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tls3000.emit('connection', myDuplex);
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socket.on('data', function (chunk) {
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console.log('[' + Date.now() + '] socket data', chunk.byteLength);
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myDuplex.push(chunk);
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});
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socket.on('error', function (err) {
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console.error('[error] connectHttps TODO close');
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console.error(err);
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});
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}
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function pipeWs(servername, service, browser, remote) {
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console.log('pipeWs');
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//var remote = remotes[servername];
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var ws = remote.ws;
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//var address = socketToAddr(ws.upgradeReq.socket);
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var baddress = socketToAddr(browser);
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var cid = addrToId(baddress);
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console.log('servername:', servername);
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console.log('service:', service);
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baddress.service = service;
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var wrapForRemote = new MyTransform({
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id: cid
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//, remoteId: remote.id
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, address: baddress
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, servername: servername
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, service: service
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});
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console.log('home-cloud is', socketToId(remote));
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console.log('browser is', cid);
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var bstream = remote.clients[cid] = {
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wrapped: browser.pipe(wrapForRemote)
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, browser: browser
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, address: baddress
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};
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//var bstream = remote.clients[cid] = wrapForRemote.pipe(browser);
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bstream.wrapped.on('data', function (pchunk) {
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// var chunk = socket.read();
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console.log('[bstream] data from browser to tunneler', pchunk.byteLength);
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//console.log(JSON.stringify(pchunk.toString()));
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ws.send(pchunk, { binary: true });
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});
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bstream.wrapped.on('error', function (err) {
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console.error('[error] bstream.wrapped.error');
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console.error(err);
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try {
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ws.send(packer.pack(baddress, null, 'error'), { binary: true });
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} catch(e) {
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// ignore
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}
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try {
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bstream.browser.end();
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} catch(e) {
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// ignore
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}
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delete remote.clients[cid];
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});
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bstream.wrapped.on('end', function () {
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try {
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ws.send(packer.pack(baddress, null, 'end'), { binary: true });
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} catch(e) {
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// ignore
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}
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try {
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bstream.browser.end();
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} catch(e) {
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// ignore
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}
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delete remote.clients[cid];
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});
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}
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tcp3000.on('connection', function (browser) {
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// this works when I put it here, but I don't know if it's tls yet here
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// httpsServer.emit('connection', socket);
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//tls3000.emit('connection', socket);
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//var tlsSocket = new tls.TLSSocket(socket, { secureContext: tls.createSecureContext(tlsOpts) });
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//tlsSocket.on('data', function (chunk) {
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// console.log('dummy', chunk.byteLength);
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//});
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//return;
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browser.once('data', function (firstChunk) {
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// BUG XXX: this assumes that the packet won't be chunked smaller
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// than the 'hello' or the point of the 'Host' header.
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// This is fairly reasonable, but there are edge cases where
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// it does not hold (such as manual debugging with telnet)
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// and so it should be fixed at some point in the future
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// defer after return (instead of being in many places)
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process.nextTick(function () {
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browser.unshift(firstChunk);
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});
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var service = 'tcp';
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var servername;
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var str;
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var m;
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function tryTls() {
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if (!servername || selfname === servername || !remotes[servername]) {
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console.log('this is a server or an unknown');
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connectHttps(servername, browser);
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return;
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}
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console.log("pipeWs(servername, service, socket, remotes['" + servername + "'])");
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pipeWs(servername, service, browser, remotes[servername]);
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}
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// https://github.com/mscdex/httpolyglot/issues/3#issuecomment-173680155
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if (22 === firstChunk[0]) {
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// TLS
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service = 'https';
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servername = (sni(firstChunk)||'').toLowerCase();
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console.log("tls hello servername:", servername);
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tryTls();
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return;
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}
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if (firstChunk[0] > 32 && firstChunk[0] < 127) {
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str = firstChunk.toString();
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m = str.match(/(?:^|[\r\n])Host: ([^\r\n]+)[\r\n]*/im);
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servername = (m && m[1].toLowerCase() || '').split(':')[0];
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console.log('servername', servername);
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if (/HTTP\//i.test(str)) {
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service = 'http';
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if (/\/\.well-known\//.test(str)) {
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// HTTP
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if (remotes[servername]) {
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pipeWs(servername, service, browser, remotes[servername]);
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return;
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}
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connectHttp(servername, browser);
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}
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else {
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// redirect to https
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connectHttp(servername, browser);
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}
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return;
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}
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}
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console.error("Got unexpected connection", str);
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browser.write(JSON.stringify({ error: {
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message: "not sure what you were trying to do there..."
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, code: 'E_INVALID_PROTOCOL' }
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}));
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browser.end();
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});
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browser.on('error', function (err) {
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console.error('[error] tcp socket raw TODO forward and close');
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console.error(err);
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});
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});
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});
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