125 lines
4.1 KiB
JavaScript
125 lines
4.1 KiB
JavaScript
'use strict';
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module.exports.create = function (deps, config) {
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var stunnel = require('stunnel');
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var activeTunnels = {};
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function addToken(data) {
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if (typeof data === 'string') {
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data = { jwt: data };
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}
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if (!data.jwt) {
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return deps.PromiseA.reject(new Error("missing 'jwt' from tunnel data"));
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}
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if (!data.tunnelUrl) {
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var decoded;
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try {
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decoded = JSON.parse(new Buffer(data.jwt.split('.')[1], 'base64').toString('ascii'));
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} catch (err) {
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console.warn('invalid web token given to tunnel manager', err);
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return deps.PromiseA.reject(err);
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}
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if (!decoded.aud) {
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console.warn('tunnel manager given token with no tunnelUrl or audience');
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var err = new Error('missing tunnelUrl and audience');
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return deps.PromiseA.reject(err);
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}
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data.tunnelUrl = 'wss://' + decoded.aud + '/';
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}
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if (!activeTunnels[data.tunnelUrl]) {
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console.log('creating new tunnel client for', data.tunnelUrl);
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// We create the tunnel without an initial token so we can append the token and
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// get the promise that should tell us more about if it worked or not.
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activeTunnels[data.tunnelUrl] = stunnel.connect({
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stunneld: data.tunnelUrl
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, net: deps.tunnel.net
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// NOTE: the ports here aren't that important since we are providing a custom
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// `net.createConnection` that doesn't actually use the port. What is important
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// is that any services we are interested in are listed in this object and have
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// a '*' sub-property.
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, services: {
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https: { '*': 443 }
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, http: { '*': 80 }
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, smtp: { '*': 25 }
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, smtps: { '*': 587 /*also 465/starttls*/ }
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, ssh: { '*': 22 }
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}
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});
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}
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console.log('appending token to tunnel at', data.tunnelUrl);
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return activeTunnels[data.tunnelUrl].append(data.jwt);
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}
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function acquireToken(session, domains) {
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var OAUTH3 = deps.OAUTH3;
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// The OAUTH3 library stores some things on the root session object that we usually
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// just leave inside the token, but we need to pull those out before we use it here
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session.provider_uri = session.provider_uri || session.token.provider_uri || session.token.iss;
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session.client_uri = session.client_uri || session.token.azp;
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session.scope = session.scope || session.token.scp;
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console.log('asking for tunnel token from', session.token.aud);
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return OAUTH3.discover(session.token.aud).then(function (directives) {
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var opts = {
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api: 'tunnel.token'
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, session: session
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, data: {
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domains: domains
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, device: {
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hostname: config.device.hostname
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, id: config.device.uid || config.device.id
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}
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}
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};
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return OAUTH3.api(directives.api, opts).then(addToken);
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});
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}
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function removeToken(data) {
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if (typeof data === 'string') {
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data = { jwt: data };
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}
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if (!data.tunnelUrl) {
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var decoded;
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try {
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decoded = JSON.parse(new Buffer(data.jwt.split('.')[1], 'base64').toString('ascii'));
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} catch (err) {
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console.warn('invalid web token given to tunnel manager', err);
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return deps.PromiseA.reject(err);
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}
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if (!decoded.aud) {
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console.warn('tunnel manager given token with no tunnelUrl or audience');
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var err = new Error('missing tunnelUrl and audience');
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return deps.PromiseA.reject(err);
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}
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data.tunnelUrl = 'wss://' + decoded.aud + '/';
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}
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// Not sure if we actually want to return an error that the token didn't even belong to a
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// server that existed, but since it never existed we can consider it as "removed".
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if (!activeTunnels[data.tunnelUrl]) {
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return deps.PromiseA.resolve();
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}
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console.log('removing token from tunnel at', data.tunnelUrl);
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return activeTunnels[data.tunnelUrl].clear(data.jwt);
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}
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function disconnectAll() {
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Object.keys(activeTunnels).forEach(function (key) {
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activeTunnels[key].end();
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});
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}
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return {
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start: acquireToken
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, startDirect: addToken
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, remove: removeToken
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, disconnect: disconnectAll
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};
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};
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