344 lines
12 KiB
JavaScript
344 lines
12 KiB
JavaScript
'use strict';
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module.exports.create = function (securePort, vhostsdir) {
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var PromiseA = require('bluebird').Promise;
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var serveStatic;
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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 loopbackToken = require('crypto').randomBytes(32).toString('hex');
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function handleAppScopedError(tag, domaininfo, req, res, fn) {
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function next(err) {
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if (!err) {
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fn(req, res);
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return;
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}
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if (res.headersSent) {
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console.error('[ERROR] handleAppScopedError headersSent');
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console.log(err);
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console.log(err.stack);
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return;
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}
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console.error('[ERROR] handleAppScopedError');
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console.log(err);
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console.log(err.stack);
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res.writeHead(500);
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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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+ "<pre>"
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+ "<code>"
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+ "Method: " + encodeURI(req.method)
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+ '\n'
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+ "Hostname: " + encodeURI(domaininfo.hostname)
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+ '\n'
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+ "App: " + encodeURI(domaininfo.pathname ? (domaininfo.pathname + '/') : '')
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+ '\n'
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+ "Route: " + encodeURI(req.url)//.replace(/^\//, '')
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+ '\n'
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// TODO better sanatization
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+ 'Error: ' + (err.message || err.toString()).replace(/</g, '<')
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+ "</code>"
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+ "</pre>"
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+ "</body>"
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+ "</html>"
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);
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}
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return next;
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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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// TODO make lazy
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var app = connect().use(require('compression')());
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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 connectContext = {};
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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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res.setHeader('Strict-Transport-Security', 'max-age=10886400; includeSubDomains; preload');
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function loadThatApp() {
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var time = Date.now();
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console.log('[log] LOADING "' + domaininfo.hostname + '/' + domaininfo.pathname + '"', req.url);
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return getAppContext(domaininfo).then(function (localApp) {
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console.info((Date.now() - time) + 'ms Loaded ' + domaininfo.hostname + ':' + securePort + '/' + domaininfo.pathname);
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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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function fourohfour(req, res) {
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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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+ encodeURI(req.method)
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+ " 'https://"
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+ encodeURI(domaininfo.hostname)
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+ '/'
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+ encodeURI(domaininfo.pathname ? (domaininfo.pathname + '/') : '')
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+ encodeURI(req.url.replace(/^\//, ''))
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+ "'"
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+ "<br/>"
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+ "<br/>"
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+ "Domain: " + encodeURI(domaininfo.hostname)
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+ "<br/>"
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+ "App: " + encodeURI(domaininfo.pathname)
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+ "<br/>"
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+ "Route : " + encodeURI(req.url)
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+ "</body>"
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+ "</html>"
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);
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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, handleAppScopedError('localApp', domaininfo, req, res, fourohfour));
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}
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try {
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var localConnect = connect();
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localConnect.use(require('connect-query')());
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localConnect.use(localAppWrapped);
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domainMergeMap[domaininfo.hostname].apps.use('/' + domaininfo.pathname, localConnect);
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return localConnect;
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} catch(e) {
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console.error('[ERROR] '
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+ domaininfo.hostname + ':' + securePort
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+ '/' + domaininfo.pathname
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);
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console.error(e);
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// TODO this may not work in web apps (due to 500), probably okay
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res.writeHead(500);
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res.end('{ "error": { "message": "[ERROR] could not load '
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+ encodeURI(domaininfo.hostname) + ':' + securePort + '/' + encodeURI(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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function suckItDubDubDub(req, res) {
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var newLoc = 'https://' + (req.headers.host||'').replace(/^www\./) + req.url;
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res.statusCode = 301;
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res.setHeader('Location', newLoc);
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res.end("<html><head><title></title></head><body><!-- redirecting nowww --></body><html>");
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}
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function nextify() {
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if (!appContext) {
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appContext = loadThatApp();
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}
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if (!appContext.then) {
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appContext(req, res, next);
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} else {
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appContext.then(function (localConnect) {
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appContext = localConnect;
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appContext(req, res, next);
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});
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}
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}
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if (!serveStatic) {
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serveStatic = require('serve-static');
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}
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if (!connectContext.static) {
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console.log('[static]', path.join(vhostsdir, domaininfo.dirname, 'public'));
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connectContext.static = serveStatic(path.join(vhostsdir, domaininfo.dirname, 'public'));
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}
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if (/^www\./.test(req.headers.host)) {
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if (/\.appcache\b/.test(req.url)) {
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res.setHeader('Content-Type', 'text/cache-manifest');
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res.end('CACHE MANIFEST\n\n# v0__DELETE__CACHE__MANIFEST__\n\nNETWORK:\n*');
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return;
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}
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suckItDubDubDub(req, res);
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return;
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}
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if (/^\/api\//.test(req.url)) {
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nextify();
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return;
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}
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connectContext.static(req, res, nextify);
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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.writeHead(500);
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res.end('{ "error": { "message": "' + msg + '" } }');
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};
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}
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function getLoopbackApp() {
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return function (req, res) {
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res.setHeader('Content-Type', 'application/json; charset=utf-8');
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res.end(JSON.stringify({ "success": true, "token": loopbackToken }));
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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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if ('loopback.daplie.invalid' === domaininfo.dirname) {
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return getLoopbackApp();
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}
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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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console.error("[ERROR] initialization failed during create() for " + domaininfo.dirname);
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console.error(e);
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throw 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, function (req, res) {
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res.send({
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error: {
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message: "this is an api. ain't no www belong here"
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, code: "E_WWW"
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}
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});
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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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return { create: createPromiseApps };
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};
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