'use strict';
module.exports.create = function (securePort, certsPath, vhostsdir) {
var PromiseA = require('bluebird').Promise;
var serveStatic;
var https = require('https');
var fs = require('fs');
var path = require('path');
var dummyCerts;
var serveFavicon;
var secureContexts = {};
function loadDummyCerts() {
if (dummyCerts) {
return dummyCerts;
}
dummyCerts = {
key: fs.readFileSync(path.join(certsPath, 'server', 'dummy-server.key.pem'))
, cert: fs.readFileSync(path.join(certsPath, 'server', 'dummy-server.crt.pem'))
, ca: fs.readdirSync(path.join(certsPath, 'ca')).filter(function (node) {
return /crt\.pem$/.test(node);
}).map(function (node) {
console.log('[log dummy ca]', node);
return fs.readFileSync(path.join(certsPath, 'ca', node));
})
};
return dummyCerts;
}
function handleAppScopedError(domaininfo, req, res, fn) {
function next(err) {
if (!err) {
fn(req, res);
return;
}
console.error(err);
res.writeHead(500);
res.end(
""
+ ""
+ ''
+ ""
+ ""
+ ""
+ ""
+ "Method: " + encodeURI(req.method)
+ '\n'
+ "Hostname: " + encodeURI(domaininfo.hostname)
+ '\n'
+ "App: " + encodeURI(domaininfo.pathname ? (domaininfo.pathname + '/') : '')
+ '\n'
+ "Route: " + encodeURI(req.url)//.replace(/^\//, '')
+ '\n'
// TODO better sanatization
+ 'Error: ' + (err.message || err.toString()).replace(/"
+ ""
+ ""
+ ""
);
}
return next;
}
function createSecureContext(certs) {
// workaround for v0.12 / v1.2 backwards compat
try {
return require('tls').createSecureContext(certs);
} catch(e) {
return require('crypto').createCredentials(certs).context;
}
}
function createPromiseApps(secureServer) {
return new PromiseA(function (resolve) {
var forEachAsync = require('foreachasync').forEachAsync.create(PromiseA);
var connect = require('connect');
var app = connect();
var vhost = require('vhost');
var domainMergeMap = {};
var domainMerged = [];
function getDomainInfo(apppath) {
var parts = apppath.split(/[#%]+/);
var hostname = parts.shift();
var pathname = parts.join('/').replace(/\/+/g, '/').replace(/^\//, '');
return {
hostname: hostname
, pathname: pathname
, dirpathname: parts.join('#')
, dirname: apppath
, isRoot: apppath === hostname
};
}
function loadDomainMounts(domaininfo) {
var connectContext = {};
var appContext;
// should order and group by longest domain, then longest path
if (!domainMergeMap[domaininfo.hostname]) {
// create an connect / express app exclusive to this domain
// TODO express??
domainMergeMap[domaininfo.hostname] = {
hostname: domaininfo.hostname
, apps: connect()
, mountsMap: {}
};
domainMerged.push(domainMergeMap[domaininfo.hostname]);
}
if (domainMergeMap[domaininfo.hostname].mountsMap['/' + domaininfo.dirpathname]) {
return;
}
console.log('[log] [once] Preparing mount for', domaininfo.hostname + '/' + domaininfo.dirpathname);
domainMergeMap[domaininfo.hostname].mountsMap['/' + domaininfo.dirpathname] = function (req, res, next) {
function nextify() {
if (appContext) {
appContext(req, res, next);
return;
}
console.log('[log] LOADING "' + domaininfo.hostname + '/' + domaininfo.pathname + '"', req.url);
getAppContext(domaininfo).then(function (localApp) {
//if (localApp.arity >= 2) { /* connect uses .apply(null, arguments)*/ }
if ('function' !== typeof localApp) {
localApp = getDummyAppContext(null, "[ERROR] no connect-style export from " + domaininfo.dirname);
}
// Note: pathname should NEVER have a leading '/' on its own
// we always add it explicitly
function localAppWrapped(req, res) {
console.log('[debug]', domaininfo.hostname + '/' + domaininfo.pathname, req.url);
localApp(req, res, handleAppScopedError(domaininfo, req, res, function (req, res) {
if (!serveFavicon) {
serveFavicon = require('serve-favicon')(path.join(__dirname, '..', 'public', 'favicon.ico'));
}
// TODO redirect GET /favicon.ico to GET (req.headers.referer||'') + /favicon.ico
// TODO other common root things - robots.txt, app-icon, etc
serveFavicon(req, res, handleAppScopedError(domaininfo, req, res, function (req, res) {
res.writeHead(404);
res.end(
""
+ ""
+ ''
+ ""
+ ""
+ "Cannot "
+ encodeURI(req.method)
+ " 'https://"
+ encodeURI(domaininfo.hostname)
+ '/'
+ encodeURI(domaininfo.pathname ? (domaininfo.pathname + '/') : '')
+ encodeURI(req.url.replace(/^\//, ''))
+ "'"
+ "
"
+ "
"
+ "Domain: " + encodeURI(domaininfo.hostname)
+ "
"
+ "App: " + encodeURI(domaininfo.pathname)
+ "
"
+ "Route : " + encodeURI(req.url)
+ ""
+ ""
);
/*
res.end('{ "error": { "messages": "Route matched '
+ domaininfo.hostname + '/' + domaininfo.pathname
+ ', but was not handled. Forcing hard stop to prevent fallthru." } }');
*/
}));
}));
}
try {
domainMergeMap[domaininfo.hostname].apps.use('/' + domaininfo.pathname, localAppWrapped);
console.info('Loaded ' + domaininfo.hostname + ':' + securePort + '/' + domaininfo.pathname);
appContext = localAppWrapped;
appContext(req, res, next);
} catch(e) {
console.error('[ERROR] '
+ domaininfo.hostname + ':' + securePort
+ '/' + domaininfo.pathname
);
console.error(e);
// TODO this may not work in web apps (due to 500), probably okay
res.writeHead(500);
res.end('{ "error": { "message": "[ERROR] could not load '
+ encodeURI(domaininfo.hostname) + ':' + securePort + '/' + encodeURI(domaininfo.pathname)
+ 'or default error app." } }');
}
});
}
if (!serveStatic) {
serveStatic = require('serve-static');
}
if (!connectContext.static) {
console.log('[static]', path.join(vhostsdir, domaininfo.dirname, 'public'));
connectContext.static = serveStatic(path.join(vhostsdir, domaininfo.dirname, 'public'));
}
if (/^\/api\//.test(req.url)) {
nextify();
return;
}
connectContext.static(req, res, nextify);
};
domainMergeMap[domaininfo.hostname].apps.use(
'/' + domaininfo.pathname
, domainMergeMap[domaininfo.hostname].mountsMap['/' + domaininfo.dirpathname]
);
return PromiseA.resolve();
}
function readNewVhosts() {
return fs.readdirSync(vhostsdir).filter(function (node) {
// not a hidden or private file
return '.' !== node[0] && '_' !== node[0];
}).map(getDomainInfo).sort(function (a, b) {
var hlen = b.hostname.length - a.hostname.length;
var plen = b.pathname.length - a.pathname.length;
// A directory could be named example.com, example.com# example.com##
// to indicate order of preference (for API addons, for example)
var dlen = b.dirname.length - a.dirname.length;
if (!hlen) {
if (!plen) {
return dlen;
}
return plen;
}
return plen;
});
}
function getDummyAppContext(err, msg) {
console.error('[ERROR] getDummyAppContext');
console.error(err);
console.error(msg);
return function (req, res) {
res.writeHead(500);
res.end('{ "error": { "message": "' + msg + '" } }');
}
}
function getAppContext(domaininfo) {
var localApp;
try {
// TODO live reload required modules
localApp = require(path.join(vhostsdir, domaininfo.dirname, 'app.js'));
if (localApp.create) {
// TODO read local config.yml and pass it in
// TODO pass in websocket
localApp = localApp.create(secureServer, {
dummyCerts: dummyCerts
, hostname: domaininfo.hostname
, port: securePort
, url: domaininfo.pathname
});
if (!localApp) {
localApp = getDummyAppContext(null, "[ERROR] no app was returned by app.js for " + domaininfo.dirname);
}
}
if (!localApp.then) {
localApp = PromiseA.resolve(localApp);
} else {
return localApp.catch(function (e) {
return getDummyAppContext(e, "[ERROR] initialization failed during create() for " + domaininfo.dirname);
});
}
} catch(e) {
localApp = getDummyAppContext(e, "[ERROR] could not load app.js for " + domaininfo.dirname);
localApp = PromiseA.resolve(localApp);
}
return localApp;
}
function loadDomainVhosts() {
domainMerged.forEach(function (domainApp) {
if (domainApp._loaded) {
return;
}
console.log('[log] [once] Loading all mounts for ' + domainApp.hostname);
domainApp._loaded = true;
app.use(vhost(domainApp.hostname, domainApp.apps));
app.use(vhost('www.' + domainApp.hostname, domainApp.apps));
});
}
function hotloadApp(req, res, next) {
var forEachAsync = require('foreachasync').forEachAsync.create(PromiseA);
var vhost = (req.headers.host || '').split(':')[0];
// the matching domain didn't catch it
console.log('[log] vhost:', vhost);
if (domainMergeMap[vhost]) {
next();
return;
}
return forEachAsync(readNewVhosts(), loadDomainMounts).then(loadDomainVhosts).then(function () {
// no matching domain was added
if (!domainMergeMap[vhost]) {
next();
return;
}
return forEachAsync(domainMergeMap[vhost].apps, function (fn) {
return new PromiseA(function (resolve, reject) {
function next(err) {
if (err) {
reject(err);
}
resolve();
}
try {
fn(req, res, next);
} catch(e) {
reject(e);
}
});
}).catch(function (e) {
next(e);
});
});
/*
// TODO loop through mounts and see if any fit
domainMergeMap[vhost].mountsMap['/' + domaininfo.dirpathname]
if (!domainMergeMap[domaininfo.hostname]) {
// TODO reread directories
}
*/
}
// TODO pre-cache these once the server has started?
// return forEachAsync(rootDomains, loadCerts);
// TODO load these even more lazily
return forEachAsync(readNewVhosts(), loadDomainMounts).then(loadDomainVhosts).then(function () {
console.log('[log] TODO fix and use hotload');
//app.use(hotloadApp);
resolve(app);
return;
});
});
}
function loadCerts(domainname) {
// TODO make async
// WARNING: This must be SYNC until we KNOW we're not going to be running on v0.10
// Also, once we load Let's Encrypt, it's lights out for v0.10
var certsPath = path.join(vhostsdir, domainname, 'certs');
var secOpts;
try {
var nodes = fs.readdirSync(path.join(certsPath, 'server'));
var keyNode = nodes.filter(function (node) { return /\.key\.pem$/.test(node); })[0];
var crtNode = nodes.filter(function (node) { return /\.crt\.pem$/.test(node); })[0];
secOpts = {
key: fs.readFileSync(path.join(certsPath, 'server', keyNode))
, cert: fs.readFileSync(path.join(certsPath, 'server', crtNode))
};
if (fs.existsSync(path.join(certsPath, 'ca'))) {
secOpts.ca = fs.readdirSync(path.join(certsPath, 'ca')).filter(function (node) {
console.log('[log ca]', node);
return /crt\.pem$/.test(node);
}).map(function (node) {
return fs.readFileSync(path.join(certsPath, 'ca', node));
});
}
} catch(err) {
// TODO Let's Encrypt / ACME HTTPS
console.error("[ERROR] Couldn't READ HTTPS certs from '" + certsPath + "':");
// this will be a simple file-read error
console.error(err.message);
return null;
}
try {
secureContexts[domainname] = createSecureContext(secOpts);
} catch(err) {
console.error("[ERROR] Certificates in '" + certsPath + "' could not be used:");
console.error(err);
return null;
}
if (!secureContexts[domainname]) {
console.error("[ERROR] Sanity check fail, no cert for '" + domainname + "'");
return null;
}
return secureContexts[domainname];
}
function createSecureServer() {
var localDummyCerts = loadDummyCerts();
var secureOpts = {
// fallback / default dummy certs
key: localDummyCerts.key
, cert: localDummyCerts.cert
, ca: localDummyCerts.ca
// changes from default: disallow RC4
, ciphers: "ECDHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA256:AES128-GCM-SHA256:!RC4:HIGH:!MD5:!aNULL"
};
function addSniWorkaroundCallback() {
//SNICallback is passed the domain name, see NodeJS docs on TLS
secureOpts.SNICallback = function (domainname, cb) {
if (/(^|\.)proxyable\./.test(domainname)) {
// device-id-12345678.proxyable.myapp.mydomain.com => myapp.mydomain.com
// proxyable.myapp.mydomain.com => myapp.mydomain.com
// TODO myapp.mydomain.com.proxyable.com => myapp.mydomain.com
domainname = domainname.replace(/.*\.?proxyable\./, '');
}
if (!secureContexts.dummy) {
console.log('[log] Loading dummy certs');
secureContexts.dummy = createSecureContext(localDummyCerts);
}
if (!secureContexts[domainname]) {
console.log('[log] Loading certs for', domainname);
// TODO keep trying to find the cert in case it's uploaded late?
secureContexts[domainname] = loadCerts(domainname) || secureContexts.dummy;
}
// workaround for v0.12 / v1.2 backwards compat bug
if ('function' === typeof cb) {
cb(null, secureContexts[domainname] || secureContexts.dummy);
} else {
return secureContexts[domainname] || secureContexts.dummy;
}
};
}
addSniWorkaroundCallback();
return https.createServer(secureOpts);
}
function runServer() {
return new PromiseA(function (resolve) {
var secureServer = createSecureServer();
var promiseApps;
function loadPromise() {
if (!promiseApps) {
promiseApps = createPromiseApps(secureServer);
}
return promiseApps;
}
secureServer.listen(securePort, function () {
resolve(secureServer);
console.log("Listening on https://localhost:" + secureServer.address().port, '\n');
loadPromise();
});
// Get up and listening as absolutely quickly as possible
secureServer.on('request', function (req, res) {
if (/(^|\.)proxyable\./.test(req.headers.host)) {
// device-id-12345678.proxyable.myapp.mydomain.com => myapp.mydomain.com
// proxyable.myapp.mydomain.com => myapp.mydomain.com
// TODO myapp.mydomain.com.proxyable.com => myapp.mydomain.com
req.headers.host = req.headers.host.replace(/.*\.?proxyable\./, '');
}
loadPromise().then(function (app) {
app(req, res);
});
});
return secureServer;
});
}
return runServer();
};