59 lines
2.3 KiB
JavaScript
59 lines
2.3 KiB
JavaScript
'use strict';
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// Note the odd use of callbacks here.
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// We're targetting low-power platforms and so we're trying to
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// require everything as lazily as possible until our server
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// is actually listening on the socket. Bluebird is heavy.
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// Even the built-in modules can take dozens of milliseconds to require
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module.exports.create = function (lex, certPaths, serverCallback) {
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// Recognize that this secureContexts cache is local to this CPU core
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var secureContexts = {};
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var ciphers = 'ECDH+AESGCM:DH+AESGCM:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS:!AES256';
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function createSecureServer() {
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var domainname = 'www.example.com';
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var fs = require('fs');
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var secureOpts = {
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// TODO create backup file just in case this one is ever corrupted
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// NOTE synchronous is faster in this case of initialization
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// NOTE certsPath[0] must be the default (LE) directory (another may be used for OV and EV certs)
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key: fs.readFileSync(certPaths[0] + '/' + domainname + '/privkey.pem', 'ascii')
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, cert: fs.readFileSync(certPaths[0] + '/' + domainname + '/fullchain.pem', 'ascii')
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// https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/
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// https://nodejs.org/api/tls.html
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// removed :ECDH+AES256:DH+AES256 and added :!AES256 because AES-256 wastes CPU
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, ciphers: ciphers
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, honorCipherOrder: true
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};
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secureContexts['www.example.com'] = require('tls').createSecureContext(secureOpts);
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secureContexts['example.com'] = secureContexts['www.example.com'];
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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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// NOTE: '*.proxyable.*' domains will be truncated
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require('./load-certs').load(secureContexts, certPaths, domainname).then(function (context) {
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cb(null, context);
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}, function (err) {
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console.error('[SNI Callback]');
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console.error(err.stack);
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cb(err);
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});
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};
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serverCallback(null, require('https').createServer(secureOpts));
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}
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function createLeServer() {
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lex.httpsOptions.ciphers = ciphers;
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lex.httpsOptions.honorCipherOrder = true;
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serverCallback(null, require('https').createServer(lex.httpsOptions));
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}
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if (lex) {
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createLeServer();
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} else {
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createSecureServer();
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}
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};
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