424 lines
15 KiB
JavaScript
424 lines
15 KiB
JavaScript
'use strict';
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module.exports.create = function (securePort, certsPath, vhostsdir) {
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var PromiseA = require('bluebird').Promise;
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var https = require('https');
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var fs = require('fs');
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var path = require('path');
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var dummyCerts;
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var serveFavicon;
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var secureContexts = {};
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function loadDummyCerts() {
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if (dummyCerts) {
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return dummyCerts;
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}
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dummyCerts = {
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key: fs.readFileSync(path.join(certsPath, 'server', 'dummy-server.key.pem'))
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, cert: fs.readFileSync(path.join(certsPath, 'server', 'dummy-server.crt.pem'))
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, ca: fs.readdirSync(path.join(certsPath, 'ca')).filter(function (node) {
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return /crt\.pem$/.test(node);
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}).map(function (node) {
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console.log('[log dummy ca]', node);
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return fs.readFileSync(path.join(certsPath, 'ca', node));
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})
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};
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return dummyCerts;
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}
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function createSecureContext(certs) {
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// workaround for v0.12 / v1.2 backwards compat
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try {
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return require('tls').createSecureContext(certs);
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} catch(e) {
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return require('crypto').createCredentials(certs).context;
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}
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}
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function createPromiseApps(secureServer) {
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return new PromiseA(function (resolve) {
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var forEachAsync = require('foreachasync').forEachAsync.create(PromiseA);
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var connect = require('connect');
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var app = connect();
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var vhost = require('vhost');
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var domainMergeMap = {};
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var domainMerged = [];
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function getDomainInfo(apppath) {
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var parts = apppath.split(/[#%]+/);
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var hostname = parts.shift();
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var pathname = parts.join('/').replace(/\/+/g, '/').replace(/^\//, '');
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return {
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hostname: hostname
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, pathname: pathname
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, dirpathname: parts.join('#')
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, dirname: apppath
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, isRoot: apppath === hostname
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};
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}
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function loadDomainMounts(domaininfo) {
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var appContext;
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// should order and group by longest domain, then longest path
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if (!domainMergeMap[domaininfo.hostname]) {
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// create an connect / express app exclusive to this domain
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// TODO express??
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domainMergeMap[domaininfo.hostname] = {
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hostname: domaininfo.hostname
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, apps: connect()
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, mountsMap: {}
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};
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domainMerged.push(domainMergeMap[domaininfo.hostname]);
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}
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if (domainMergeMap[domaininfo.hostname].mountsMap['/' + domaininfo.dirpathname]) {
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return;
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}
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console.log('[log] [once] Preparing mount for', domaininfo.hostname + '/' + domaininfo.dirpathname);
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domainMergeMap[domaininfo.hostname].mountsMap['/' + domaininfo.dirpathname] = function (req, res, next) {
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if (appContext) {
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appContext(req, res, next);
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return;
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}
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console.log('[log] LOADING "' + domaininfo.hostname + '/' + domaininfo.pathname + '"', req.url);
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getAppContext(domaininfo).then(function (localApp) {
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//if (localApp.arity >= 2) { /* connect uses .apply(null, arguments)*/ }
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if ('function' !== typeof localApp) {
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localApp = getDummyAppContext(null, "[ERROR] no connect-style export from " + domaininfo.dirname);
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}
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// Note: pathname should NEVER have a leading '/' on its own
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// we always add it explicitly
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function localAppWrapped(req, res) {
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console.log('[debug]', domaininfo.hostname + '/' + domaininfo.pathname, req.url);
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localApp(req, res, function (err) {
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if (!serveFavicon) {
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serveFavicon = require('serve-favicon')(path.join(__dirname, '..', 'public', 'favicon.ico'));
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}
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// TODO redirect GET /favicon.ico to GET (req.headers.referer||'') + /favicon.ico
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// TODO other common root things - robots.txt, app-icon, etc
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serveFavicon(req, res, function (err2) {
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res.writeHead(404);
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res.end(
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"<html>"
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+ "<head>"
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+ '<link rel="icon" href="favicon.ico" />'
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+ "</head>"
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+ "<body>"
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+ "Cannot "
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+ req.method
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+ " '"
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+ domaininfo.hostname
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+ '/'
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+ (domaininfo.pathname ? (domaininfo.pathname + '/') : '')
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+ req.url.replace(/^\//, '')
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+ "'"
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+ "</body>"
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+ "</html>"
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);
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/*
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res.end('{ "error": { "messages": "Route matched '
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+ domaininfo.hostname + '/' + domaininfo.pathname
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+ ', but was not handled. Forcing hard stop to prevent fallthru." } }');
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*/
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});
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});
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}
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try {
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domainMergeMap[domaininfo.hostname].apps.use('/' + domaininfo.pathname, localAppWrapped);
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console.info('Loaded ' + domaininfo.hostname + ':' + securePort + '/' + domaininfo.pathname);
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appContext = localAppWrapped;
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appContext(req, res, next);
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} catch(e) {
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console.error('[ERROR] ' + domaininfo.hostname + ':' + securePort + '/' + domaininfo.pathname);
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console.error(e);
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res.end('{ "error": { "message": "[ERROR] could not load '
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+ domaininfo.hostname + ':' + securePort + '/' + domaininfo.pathname
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+ 'or default error app." } }');
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}
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});
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};
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domainMergeMap[domaininfo.hostname].apps.use(
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'/' + domaininfo.pathname
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, domainMergeMap[domaininfo.hostname].mountsMap['/' + domaininfo.dirpathname]
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);
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return PromiseA.resolve();
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}
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function readNewVhosts() {
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return fs.readdirSync(vhostsdir).filter(function (node) {
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// not a hidden or private file
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return '.' !== node[0] && '_' !== node[0];
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}).map(getDomainInfo).sort(function (a, b) {
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var hlen = b.hostname.length - a.hostname.length;
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var plen = b.pathname.length - a.pathname.length;
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// A directory could be named example.com, example.com# example.com##
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// to indicate order of preference (for API addons, for example)
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var dlen = b.dirname.length - a.dirname.length;
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if (!hlen) {
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if (!plen) {
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return dlen;
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}
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return plen;
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}
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return plen;
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});
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}
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function getDummyAppContext(err, msg) {
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console.error('[ERROR] getDummyAppContext');
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console.error(err);
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console.error(msg);
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return function (req, res) {
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res.end('{ "error": { "message": "' + msg + '" } }');
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}
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}
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function getAppContext(domaininfo) {
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var localApp;
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try {
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// TODO live reload required modules
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localApp = require(path.join(vhostsdir, domaininfo.dirname, 'app.js'));
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if (localApp.create) {
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// TODO read local config.yml and pass it in
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// TODO pass in websocket
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localApp = localApp.create(secureServer, {
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dummyCerts: dummyCerts
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, hostname: domaininfo.hostname
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, port: securePort
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, url: domaininfo.pathname
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});
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if (!localApp) {
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localApp = getDummyAppContext(null, "[ERROR] no app was returned by app.js for " + domaininfo.dirname);
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}
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}
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if (!localApp.then) {
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localApp = PromiseA.resolve(localApp);
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} else {
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return localApp.catch(function (e) {
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return getDummyAppContext(e, "[ERROR] initialization failed during create() for " + domaininfo.dirname);
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});
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}
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} catch(e) {
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localApp = getDummyAppContext(e, "[ERROR] could not load app.js for " + domaininfo.dirname);
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localApp = PromiseA.resolve(localApp);
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}
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return localApp;
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}
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function loadDomainVhosts() {
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domainMerged.forEach(function (domainApp) {
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if (domainApp._loaded) {
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return;
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}
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console.log('[log] [once] Loading all mounts for ' + domainApp.hostname);
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domainApp._loaded = true;
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app.use(vhost(domainApp.hostname, domainApp.apps));
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app.use(vhost('www.' + domainApp.hostname, domainApp.apps));
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});
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}
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function hotloadApp(req, res, next) {
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var forEachAsync = require('foreachasync').forEachAsync.create(PromiseA);
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var vhost = (req.headers.host || '').split(':')[0];
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// the matching domain didn't catch it
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console.log('[log] vhost:', vhost);
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if (domainMergeMap[vhost]) {
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next();
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return;
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}
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return forEachAsync(readNewVhosts(), loadDomainMounts).then(loadDomainVhosts).then(function () {
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// no matching domain was added
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if (!domainMergeMap[vhost]) {
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next();
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return;
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}
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return forEachAsync(domainMergeMap[vhost].apps, function (fn) {
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return new PromiseA(function (resolve) {
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function next(err) {
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if (err) {
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reject(err);
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}
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resolve();
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}
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try {
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fn(req, res, next);
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} catch(e) {
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reject(e);
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}
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});
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}).catch(function (e) {
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next(e);
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});
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});
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/*
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// TODO loop through mounts and see if any fit
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domainMergeMap[vhost].mountsMap['/' + domaininfo.dirpathname]
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if (!domainMergeMap[domaininfo.hostname]) {
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// TODO reread directories
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}
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*/
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}
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// TODO pre-cache these once the server has started?
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// return forEachAsync(rootDomains, loadCerts);
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// TODO load these even more lazily
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return forEachAsync(readNewVhosts(), loadDomainMounts).then(loadDomainVhosts).then(function () {
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console.log('[log] TODO fix and use hotload');
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//app.use(hotloadApp);
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resolve(app);
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return;
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});
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});
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};
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function loadCerts(domainname) {
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// TODO make async
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// WARNING: This must be SYNC until we KNOW we're not going to be running on v0.10
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// Also, once we load Let's Encrypt, it's lights out for v0.10
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var certsPath = path.join(vhostsdir, domainname, 'certs');
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try {
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var nodes = fs.readdirSync(path.join(certsPath, 'server'));
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var keyNode = nodes.filter(function (node) { return /\.key\.pem$/.test(node); })[0];
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var crtNode = nodes.filter(function (node) { return /\.crt\.pem$/.test(node); })[0];
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var secOpts = {
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key: fs.readFileSync(path.join(certsPath, 'server', keyNode))
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, cert: fs.readFileSync(path.join(certsPath, 'server', crtNode))
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}
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if (fs.existsSync(path.join(certsPath, 'ca'))) {
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secOpts.ca = fs.readdirSync(path.join(certsPath, 'ca')).filter(function (node) {
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console.log('[log ca]', node);
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return /crt\.pem$/.test(node);
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}).map(function (node) {
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return fs.readFileSync(path.join(certsPath, 'ca', node));
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});
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}
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} catch(err) {
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// TODO Let's Encrypt / ACME HTTPS
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console.error("[ERROR] Couldn't READ HTTPS certs from '" + certsPath + "':");
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// this will be a simple file-read error
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console.error(err.message);
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return null;
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}
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try {
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secureContexts[domainname] = createSecureContext(secOpts);
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} catch(err) {
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console.error("[ERROR] Certificates in '" + certsPath + "' could not be used:");
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console.error(err);
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return null;
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}
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if (!secureContexts[domainname]) {
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console.error("[ERROR] Sanity check fail, no cert for '" + domainname + "'");
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return null;
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}
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return secureContexts[domainname];
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}
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function createSecureServer() {
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var localDummyCerts = loadDummyCerts();
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var secureOpts = {
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// fallback / default dummy certs
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key: localDummyCerts.key
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, cert: localDummyCerts.cert
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, ca: localDummyCerts.ca
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};
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function addSniWorkaroundCallback() {
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//SNICallback is passed the domain name, see NodeJS docs on TLS
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secureOpts.SNICallback = function (domainname, cb) {
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if (/(^|\.)proxyable\./.test(domainname)) {
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// device-id-12345678.proxyable.myapp.mydomain.com => myapp.mydomain.com
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// proxyable.myapp.mydomain.com => myapp.mydomain.com
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// TODO myapp.mydomain.com.proxyable.com => myapp.mydomain.com
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domainname = domainname.replace(/.*\.?proxyable\./, '');
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}
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if (!secureContexts.dummy) {
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console.log('[log] Loading dummy certs');
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secureContexts.dummy = createSecureContext(localDummyCerts);
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}
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if (!secureContexts[domainname]) {
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console.log('[log] Loading certs for', domainname);
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secureContexts[domainname] = loadCerts(domainname);
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}
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// workaround for v0.12 / v1.2 backwards compat bug
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if ('function' === typeof cb) {
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cb(null, secureContexts[domainname] || secureContexts.dummy);
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} else {
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return secureContexts[domainname] || secureContexts.dummy;
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}
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};
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}
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addSniWorkaroundCallback();
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return https.createServer(secureOpts);
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}
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function runServer() {
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return new PromiseA(function (resolve) {
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var secureServer = createSecureServer();
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var promiseApps;
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function loadPromise() {
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if (!promiseApps) {
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promiseApps = createPromiseApps(secureServer);
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}
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return promiseApps;
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}
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secureServer.listen(securePort, function () {
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resolve(secureServer);
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console.log("Listening on https://localhost:" + secureServer.address().port, '\n');
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loadPromise();
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});
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// Get up and listening as absolutely quickly as possible
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secureServer.on('request', function (req, res) {
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if (/(^|\.)proxyable\./.test(req.headers.host)) {
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// device-id-12345678.proxyable.myapp.mydomain.com => myapp.mydomain.com
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// proxyable.myapp.mydomain.com => myapp.mydomain.com
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// TODO myapp.mydomain.com.proxyable.com => myapp.mydomain.com
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req.headers.host = req.headers.host.replace(/.*\.?proxyable\./, '');
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}
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loadPromise().then(function (app) {
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app(req, res);
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});
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});
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return secureServer;
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});
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}
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return runServer();
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}
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