changed token handling to allow multiple per websocket
This commit is contained in:
tigerbot
parent
65df12ecb3
commit
40c797b729
225
wstunneld.js
225
wstunneld.js
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@ -23,8 +23,7 @@ Devices.remove = function (store, servername, device) {
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var index = devices.indexOf(device);
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if (index < 0) {
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var id = device.deviceId || device.servername || device.id;
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console.warn('attempted to remove non-present device', id, 'from', servername);
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console.warn('attempted to remove non-present device', device.deviceId, 'from', servername);
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return null;
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}
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return devices.splice(index, 1)[0];
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@ -55,75 +54,26 @@ module.exports.create = function (copts) {
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var pongTimeout = copts.pongTimeout || 10*1000;
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function onWsConnection(ws) {
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var location = url.parse(ws.upgradeReq.url, true);
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var authn = (ws.upgradeReq.headers.authorization||'').split(/\s+/);
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var jwtoken;
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var token;
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var socketId = packer.socketToId(ws.upgradeReq.socket);
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var remotes = {};
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try {
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if (authn[0]) {
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if ('basic' === authn[0].toLowerCase()) {
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authn = new Buffer(authn[1], 'base64').toString('ascii').split(':');
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}
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/*
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if (-1 !== [ 'bearer', 'jwk' ].indexOf(authn[0].toLowerCase())) {
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jwtoken = authn[1];
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}
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*/
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}
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jwtoken = authn[1] || location.query.access_token;
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} catch(e) {
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jwtoken = null;
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function logName() {
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var result = Object.keys(remotes).map(function (jwtoken) {
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return remotes[jwtoken].deviceId;
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}).join(';');
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return result || socketId;
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}
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try {
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token = jwt.verify(jwtoken, copts.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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//console.log('[wstunneld.js] DEBUG', token);
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if (!Array.isArray(token.domains)) {
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if ('string' === typeof token.name) {
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token.domains = [ token.name ];
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}
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}
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if (!Array.isArray(token.domains)) {
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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 = {};
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remote.ws = ws;
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remote.servername = (token.device && token.device.hostname) || token.domains.join(',');
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remote.deviceId = (token.device && token.device.id) || null;
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remote.id = packer.socketToId(ws.upgradeReq.socket);
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console.log("remote.id", remote.id);
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remote.domains = token.domains;
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remote.clients = {};
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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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function closeBrowserConn(cid) {
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if (!remote.clients[cid]) {
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var remote;
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Object.keys(remotes).some(function (jwtoken) {
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if (remotes[jwtoken].clients[cid]) {
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remote = remotes[jwtoken];
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return true;
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}
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});
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if (!remote) {
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return;
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}
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@ -151,20 +101,110 @@ module.exports.create = function (copts) {
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;
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}
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function addToken(jwtoken) {
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if (remotes[jwtoken]) {
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ws.send(JSON.stringify({ error: { message: "token sent multiple times", code: "E_TOKEN_REPEAT" } }));
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return false;
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}
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var token;
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try {
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token = jwt.verify(jwtoken, copts.secret);
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} catch (e) {
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token = null;
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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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return false;
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}
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if (!Array.isArray(token.domains)) {
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if ('string' === typeof token.name) {
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token.domains = [ token.name ];
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}
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}
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if (!Array.isArray(token.domains)) {
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ws.send(JSON.stringify({ error: { message: "invalid server name", code: "E_INVALID_NAME" } }));
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return false;
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}
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if (token.domains.some(function (name) { return typeof name !== 'string'; })) {
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ws.send(JSON.stringify({ error: { message: "invalid server name", code: "E_INVALID_NAME" } }));
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return false;
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}
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// Add the custom properties we need to manage this remote, then add it to all the relevant
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// domains and the list of all this websocket's remotes.
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token.deviceId = (token.device && (token.device.id || token.device.hostname)) || token.domains.join(',');
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token.ws = ws;
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token.clients = {};
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token.domains.forEach(function (domainname) {
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console.log('domainname', domainname);
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Devices.add(deviceLists, domainname, token);
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});
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remotes[jwtoken] = token;
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console.log("added token '" + token.deviceId + "' to websocket", socketId);
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return true;
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}
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function removeToken(jwtoken) {
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var remote = remotes[jwtoken];
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if (!remote) {
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return false;
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}
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// Prevent any more browser connections being sent to this remote, and any existing
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// connections from trying to send more data across the connection.
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remote.domains.forEach(function (domainname) {
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Devices.remove(deviceLists, domainname, remote);
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});
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remote.ws = null;
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// Close all of the existing browser connections associated with this websocket connection.
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Object.keys(remote.clients).forEach(function (cid) {
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closeBrowserConn(cid);
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});
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delete remotes[jwtoken];
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console.log("removed token '" + remote.deviceId + "' from websocket", socketId);
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}
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var firstToken;
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var authn = (ws.upgradeReq.headers.authorization||'').split(/\s+/);
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if (authn[0] && 'basic' === authn[0].toLowerCase()) {
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try {
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authn = new Buffer(authn[1], 'base64').toString('ascii').split(':');
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firstToken = authn[1];
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} catch (err) { }
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}
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if (!firstToken) {
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firstToken = url.parse(ws.upgradeReq.url, true).query.access_token;
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}
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if (firstToken && !addToken(firstToken)) {
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ws.close();
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return;
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}
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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 = packer.addrToId(opts);
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var browserConn = remote.clients[cid];
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console.log("remote '" + logName() + "' has data for '" + cid + "'", opts.data.byteLength);
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console.log("remote '" + remote.servername + " : " + remote.id + "' has data for '" + cid + "'", opts.data.byteLength);
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var browserConn;
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Object.keys(remotes).some(function (jwtoken) {
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if (remotes[jwtoken].clients[cid]) {
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browserConn = remotes[jwtoken].clients[cid];
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return true;
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}
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});
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if (!browserConn) {
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remote.ws.send(packer.pack(opts, null, 'error'));
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return;
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if (browserConn) {
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browserConn.write(opts.data);
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}
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else {
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ws.send(packer.pack(opts, null, 'error'));
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}
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browserConn.write(opts.data);
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}
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, onend: function (opts) {
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var cid = packer.addrToId(opts);
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@ -177,14 +217,7 @@ module.exports.create = function (copts) {
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closeBrowserConn(cid);
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}
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};
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remote.unpacker = packer.create(handlers);
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// Now that we have created our remote object we need to store it in the deviceList for
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// each domainname we are supposed to be handling.
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token.domains.forEach(function (domainname) {
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console.log('domainname', domainname);
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Devices.add(deviceLists, domainname, remote);
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});
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var unpacker = packer.create(handlers);
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var lastActivity = Date.now();
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var timeoutId;
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@ -204,11 +237,11 @@ module.exports.create = function (copts) {
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// Otherwise we check to see if the pong has also timed out, and if not we send a ping
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// and call this function again when the pong will have timed out.
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else if (silent < activityTimeout + pongTimeout) {
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console.log('pinging', remote.deviceId || remote.servername);
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console.log('pinging', logName());
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try {
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remote.ws.ping();
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ws.ping();
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} catch (err) {
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console.warn('failed to ping home cloud', remote.deviceId || remote.servername);
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console.warn('failed to ping home cloud', logName());
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}
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timeoutId = setTimeout(checkTimeout, pongTimeout);
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}
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@ -216,8 +249,8 @@ module.exports.create = function (copts) {
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// Last case means the ping we sent before didn't get a response soon enough, so we
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// need to close the websocket connection.
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else {
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console.log('home cloud', remote.deviceId || remote.servername, 'connection timed out');
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remote.ws.close(1013, 'connection timeout');
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console.log('home cloud', logName(), 'connection timed out');
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ws.close(1013, 'connection timeout');
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}
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}
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timeoutId = setTimeout(checkTimeout, activityTimeout);
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@ -230,22 +263,14 @@ module.exports.create = function (copts) {
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refreshTimeout();
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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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unpacker.fns.addChunk(chunk);
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});
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function hangup() {
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clearTimeout(timeoutId);
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console.log('home cloud', remote.deviceId || remote.servername, 'connection closing');
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// Prevent any more browser connections being sent to this remote, and any existing
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// connections from trying to send more data across the connection.
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token.domains.forEach(function (domainname) {
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Devices.remove(deviceLists, domainname, remote);
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});
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remote.ws = null;
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// Close all of the existing browser connections associated with this websocket connection.
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Object.keys(remote.clients).forEach(function (cid) {
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closeBrowserConn(cid);
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console.log('home cloud', logName(), 'connection closing');
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Object.keys(remotes).forEach(function (jwtoken) {
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removeToken(jwtoken);
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});
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}
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