Girish Ramakrishnan
119 lines
3.7 KiB
JavaScript
Executable File
119 lines
3.7 KiB
JavaScript
Executable File
#!/usr/bin/env node
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'use strict';
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require('supererror')({ splatchError: true });
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var express = require('express'),
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url = require('url'),
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async = require('async'),
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assert = require('assert'),
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debug = require('debug')('box:proxy'),
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proxy = require('proxy-middleware'),
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session = require('cookie-session'),
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database = require('./src/database.js'),
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appdb = require('./src/appdb.js'),
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clientdb = require('./src/clientdb.js'),
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config = require('./config.js'),
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http = require('http');
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var gSessions = {};
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var gProxyMiddlewareCache = {};
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var gApp = express();
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var gHttpServer = http.createServer(gApp);
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var CALLBACK_URI = '/callback';
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var PORT = 4000;
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function startServer(callback) {
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assert(typeof callback === 'function');
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gHttpServer.on('error', console.error);
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gApp.use(session({
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keys: ['blue', 'cheese', 'is', 'something']
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}));
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gApp.use(function (req, res, next) {
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if (req.session && gSessions[req.session.sessid]) return next();
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if (req.path === CALLBACK_URI) {
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// FIXME we need to exchange the authCode and verify it
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req.session.sessid = req.query.authCode;
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// this is a simple in memory auth store
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gSessions[req.session.sessid] = 'ok';
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debug('user verified.');
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// now redirect to the actual initially requested URL
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res.redirect(req.session.returnTo);
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} else {
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var port = parseInt(req.headers['x-cloudron-proxy-port'], 10);
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if (!Number.isFinite(port)) {
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console.error('Failed to parse nginx proxy header to get app port.');
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return res.send(500, 'Routing error. No forwarded port.');
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}
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debug('begin verifying user for app on port %s.', port);
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appdb.getByHttpPort(port, function (error, result) {
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if (error) {
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console.error('Unknown app.', error);
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return res.send(500, 'Unknown app.');
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}
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clientdb.getByAppId('proxy-' + result.id, function (error, result) {
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if (error) {
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console.error('Unkonwn OAuth client.', error);
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return res.send(500, 'Unknown OAuth client.');
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}
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req.session.port = port;
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req.session.returnTo = result.redirectURI + req.path;
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var callbackUrl = result.redirectURI + CALLBACK_URI;
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var scope = 'profile,roleUser';
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var oauthLogin = config.adminOrigin() + '/api/v1/oauth/dialog/authorize?response_type=code&client_id=' + result.id + '&redirect_uri=' + callbackUrl + '&scope=' + scope;
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debug('begin OAuth flow for client %s.', result.name);
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// begin the OAuth flow
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res.redirect(oauthLogin);
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});
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});
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}
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});
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gApp.use(function (req, res, next) {
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var port = req.session.port;
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debug('proxy request for port %s with path %s.', port, req.path);
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var proxyMiddleware = gProxyMiddlewareCache[port];
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if (!proxyMiddleware) {
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console.log('Adding proxy middleware for port %d', port);
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proxyMiddleware = proxy(url.parse('http://127.0.0.1:' + port));
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gProxyMiddlewareCache[port] = proxyMiddleware;
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}
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proxyMiddleware(req, res, next);
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});
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gHttpServer.listen(PORT, callback);
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}
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async.series([
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database.initialize,
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startServer
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], function (error) {
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if (error) {
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console.error('Failed to start proxy server.', error);
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process.exit(1);
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}
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console.log('Proxy server listening...');
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});
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