mirror of
https://github.com/Ylianst/MeshCentral.git
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325 lines
19 KiB
JavaScript
325 lines
19 KiB
JavaScript
/**
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* @description MeshCentral letsEncrypt module, uses GreenLock to do all the work.
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* @author Ylian Saint-Hilaire
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* @copyright Intel Corporation 2018-2020
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* @license Apache-2.0
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* @version v0.0.2
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*/
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/*xjslint node: true */
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/*xjslint plusplus: true */
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/*xjslint maxlen: 256 */
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/*jshint node: true */
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/*jshint strict: false */
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/*jshint esversion: 6 */
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'use strict';
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var globalLetsEncrypt = null;
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module.exports.CreateLetsEncrypt = function (parent) {
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try {
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// Get the GreenLock version
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var greenLockVersion = null;
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try { greenLockVersion = require('greenlock/package.json').version; } catch (ex) { }
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if (greenLockVersion == null) {
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parent.debug('cert', "Initializing Let's Encrypt support");
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} else {
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parent.debug('cert', "Initializing Let's Encrypt support, using GreenLock v" + greenLockVersion);
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}
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// Check the current node version and support for generateKeyPair
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if (require('crypto').generateKeyPair == null) { return null; }
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if (Number(process.version.match(/^v(\d+\.\d+)/)[1]) < 10) { return null; }
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// Try to delete the "./ursa-optional" or "./node_modules/ursa-optional" folder if present.
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// This is an optional module that GreenLock uses that causes issues.
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try {
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const fs = require('fs');
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if (fs.existsSync(parent.path.join(__dirname, 'ursa-optional'))) { fs.unlinkSync(obj.path.join(__dirname, 'ursa-optional')); }
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if (fs.existsSync(parent.path.join(__dirname, 'node_modules', 'ursa-optional'))) { fs.unlinkSync(obj.path.join(__dirname, 'node_modules', 'ursa-optional')); }
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} catch (ex) { }
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// Get GreenLock setup and running.
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const greenlock = require('greenlock');
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var obj = {};
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globalLetsEncrypt = obj;
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obj.parent = parent;
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obj.path = require('path');
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obj.redirWebServerHooked = false;
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obj.leDomains = null;
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obj.leResults = null;
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obj.leResultsStaging = null;
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obj.performRestart = false; // Indicates we need to restart the server
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obj.performMoveToProduction = false; // Indicates we just got a staging certificate and need to move to production
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obj.runAsProduction = false; // This starts at false and moves to true if staging cert is ok.
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// Setup the certificate storage paths
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obj.configPath = obj.path.join(obj.parent.datapath, 'letsencrypt3');
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try { obj.parent.fs.mkdirSync(obj.configPath); } catch (e) { }
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obj.configPathStaging = obj.path.join(obj.parent.datapath, 'letsencrypt3-staging');
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try { obj.parent.fs.mkdirSync(obj.configPathStaging); } catch (e) { }
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// Setup Let's Encrypt default configuration
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obj.leDefaults = { agreeToTerms: true, store: { module: 'greenlock-store-fs', basePath: obj.configPath } };
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obj.leDefaultsStaging = { agreeToTerms: true, store: { module: 'greenlock-store-fs', basePath: obj.configPathStaging } };
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// Get package and maintainer email
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const pkg = require('./package.json');
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var maintainerEmail = null;
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if (typeof pkg.author == 'string') {
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// Older NodeJS
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maintainerEmail = pkg.author;
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var i = maintainerEmail.indexOf('<');
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if (i >= 0) { maintainerEmail = maintainerEmail.substring(i + 1); }
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var i = maintainerEmail.indexOf('>');
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if (i >= 0) { maintainerEmail = maintainerEmail.substring(0, i); }
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} else if (typeof pkg.author == 'object') {
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// Latest NodeJS
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maintainerEmail = pkg.author.email;
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}
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// Check if we need to be in debug mode
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var ledebug = false;
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try { ledebug = ((obj.parent.args.debug != null) || (obj.parent.args.debug.indexOf('cert'))); } catch (ex) { }
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// Create the main GreenLock code module for production.
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var greenlockargs = {
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parent: obj,
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packageRoot: __dirname,
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packageAgent: pkg.name + '/' + pkg.version,
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manager: obj.path.join(__dirname, 'letsencrypt.js'),
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maintainerEmail: maintainerEmail,
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notify: function (ev, args) { if (typeof args == 'string') { parent.debug('cert', ev + ': ' + args); } else { parent.debug('cert', ev + ': ' + JSON.stringify(args)); } },
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staging: false,
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debug: ledebug
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};
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if (obj.parent.args.debug == null) { greenlockargs.log = function (debug) { }; } // If not in debug mode, ignore all console output from greenlock (makes things clean).
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obj.le = greenlock.create(greenlockargs);
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// Create the main GreenLock code module for staging.
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var greenlockargsstaging = {
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parent: obj,
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packageRoot: __dirname,
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packageAgent: pkg.name + '/' + pkg.version,
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manager: obj.path.join(__dirname, 'letsencrypt.js'),
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maintainerEmail: maintainerEmail,
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notify: function (ev, args) { if (typeof args == 'string') { parent.debug('cert', 'Notify: ' + ev + ': ' + args); } else { parent.debug('cert', 'Notify: ' + ev + ': ' + JSON.stringify(args)); } },
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staging: true,
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debug: ledebug
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};
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if (obj.parent.args.debug == null) { greenlockargsstaging.log = function (debug) { }; } // If not in debug mode, ignore all console output from greenlock (makes things clean).
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obj.leStaging = greenlock.create(greenlockargsstaging);
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// Hook up GreenLock to the redirection server
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if (obj.parent.config.settings.rediraliasport === 80) { obj.redirWebServerHooked = true; }
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else if ((obj.parent.config.settings.rediraliasport == null) && (obj.parent.redirserver.port == 80)) { obj.redirWebServerHooked = true; }
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// Respond to a challenge
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obj.challenge = function (token, hostname, func) {
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if (obj.runAsProduction === true) {
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// Production
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parent.debug('cert', "Challenge " + hostname + "/" + token);
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obj.le.challenges.get({ type: 'http-01', servername: hostname, token: token })
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.then(function (results) { func(results.keyAuthorization); })
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.catch(function (e) { console.log('LE-ERROR', e); func(null); }); // unexpected error, not related to renewal
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} else {
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// Staging
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parent.debug('cert', "Challenge " + hostname + "/" + token);
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obj.leStaging.challenges.get({ type: 'http-01', servername: hostname, token: token })
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.then(function (results) { func(results.keyAuthorization); })
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.catch(function (e) { console.log('LE-ERROR', e); func(null); }); // unexpected error, not related to renewal
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}
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}
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obj.getCertificate = function(certs, func) {
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parent.debug('cert', "Getting certs from local store");
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if (certs.CommonName.indexOf('.') == -1) { console.log("ERROR: Use --cert to setup the default server name before using Let's Encrypt."); func(certs); return; }
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if (obj.parent.config.letsencrypt == null) { func(certs); return; }
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if (obj.parent.config.letsencrypt.email == null) { console.log("ERROR: Let's Encrypt email address not specified."); func(certs); return; }
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if ((obj.parent.redirserver == null) || ((typeof obj.parent.config.settings.rediraliasport === 'number') && (obj.parent.config.settings.rediraliasport !== 80)) || ((obj.parent.config.settings.rediraliasport == null) && (obj.parent.redirserver.port !== 80))) { console.log("ERROR: Redirection web server must be active on port 80 for Let's Encrypt to work."); func(certs); return; }
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if (obj.redirWebServerHooked !== true) { console.log("ERROR: Redirection web server not setup for Let's Encrypt to work."); func(certs); return; }
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if ((obj.parent.config.letsencrypt.rsakeysize != null) && (obj.parent.config.letsencrypt.rsakeysize !== 2048) && (obj.parent.config.letsencrypt.rsakeysize !== 3072)) { console.log("ERROR: Invalid Let's Encrypt certificate key size, must be 2048 or 3072."); func(certs); return; }
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// Get the list of domains
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obj.leDomains = [ certs.CommonName ];
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if (obj.parent.config.letsencrypt.names != null) {
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if (typeof obj.parent.config.letsencrypt.names == 'string') { obj.parent.config.letsencrypt.names = obj.parent.config.letsencrypt.names.split(','); }
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obj.parent.config.letsencrypt.names.map(function (s) { return s.trim(); }); // Trim each name
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if ((typeof obj.parent.config.letsencrypt.names != 'object') || (obj.parent.config.letsencrypt.names.length == null)) { console.log("ERROR: Let's Encrypt names must be an array in config.json."); func(certs); return; }
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obj.leDomains = obj.parent.config.letsencrypt.names;
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}
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if (obj.parent.config.letsencrypt.production !== true) {
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// We are in staging mode, just go ahead
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obj.getCertificateEx(certs, func);
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} else {
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// We are really in production mode
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if (obj.runAsProduction === true) {
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// Staging cert check must have been done already, move to production
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obj.getCertificateEx(certs, func);
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} else {
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// Perform staging certificate check
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parent.debug('cert', "Checking staging certificate " + obj.leDomains[0] + "...");
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obj.leStaging.get({ servername: obj.leDomains[0] })
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.then(function (results) {
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if (results != null) {
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// We have a staging certificate, move to production for real
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parent.debug('cert', "Staging certificate is present, moving to production...");
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obj.runAsProduction = true;
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obj.getCertificateEx(certs, func);
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} else {
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// No staging certificate
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parent.debug('cert', "No staging certificate present");
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func(certs);
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setTimeout(obj.checkRenewCertificate, 10000); // Check the certificate in 10 seconds.
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}
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})
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.catch(function (e) {
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// No staging certificate
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parent.debug('cert', "No staging certificate present");
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func(certs);
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setTimeout(obj.checkRenewCertificate, 10000); // Check the certificate in 10 seconds.
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});
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}
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}
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}
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obj.getCertificateEx = function (certs, func) {
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// Get the Let's Encrypt certificate from our own storage
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const xle = (obj.runAsProduction === true)? obj.le : obj.leStaging;
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xle.get({ servername: obj.leDomains[0] })
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.then(function (results) {
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// If we already have real certificates, use them
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if (results) {
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if (results.site.altnames.indexOf(certs.CommonName) >= 0) {
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certs.web.cert = results.pems.cert;
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certs.web.key = results.pems.privkey;
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certs.web.ca = [results.pems.chain];
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}
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for (var i in obj.parent.config.domains) {
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if ((obj.parent.config.domains[i].dns != null) && (obj.parent.certificateOperations.compareCertificateNames(results.site.altnames, obj.parent.config.domains[i].dns))) {
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certs.dns[i].cert = results.pems.cert;
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certs.dns[i].key = results.pems.privkey;
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certs.dns[i].ca = [results.pems.chain];
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}
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}
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}
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parent.debug('cert', "Got certs from local store (" + (obj.runAsProduction ? "Production" : "Staging") + ")");
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func(certs);
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// Check if the Let's Encrypt certificate needs to be renewed.
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setTimeout(obj.checkRenewCertificate, 60000); // Check in 1 minute.
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setInterval(obj.checkRenewCertificate, 86400000); // Check again in 24 hours and every 24 hours.
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return;
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})
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.catch(function (e) {
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parent.debug('cert', "Unable to get certs from local store (" + (obj.runAsProduction ? "Production" : "Staging") + ")");
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setTimeout(obj.checkRenewCertificate, 10000); // Check the certificate in 10 seconds.
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func(certs);
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});
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}
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// Check if we need to renew the certificate, call this every day.
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obj.checkRenewCertificate = function () {
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parent.debug('cert', "Checking certificate for " + obj.leDomains[0] + " (" + (obj.runAsProduction ? "Production" : "Staging") + ")");
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// Setup renew options
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obj.certCheckStart = Date.now();
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const xle = (obj.runAsProduction === true) ? obj.le : obj.leStaging;
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var renewOptions = { servername: obj.leDomains[0], altnames: obj.leDomains };
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try {
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xle.renew(renewOptions)
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.then(function (results) {
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if ((results == null) || (typeof results != 'object') || (results.length == 0) || (results[0].error != null)) {
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parent.debug('cert', "Unable to get a certificate (" + (obj.runAsProduction ? "Production" : "Staging") + ", " + (Date.now() - obj.certCheckStart) + "ms): " + JSON.stringify(results));
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} else {
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parent.debug('cert', "Checks completed (" + (obj.runAsProduction ? "Production" : "Staging") + ", " + (Date.now() - obj.certCheckStart) + "ms): " + JSON.stringify(results));
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if (obj.performRestart === true) { parent.debug('cert', "Certs changed, restarting..."); obj.parent.performServerCertUpdate(); } // Reset the server, TODO: Reset all peers
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else if (obj.performMoveToProduction == true) {
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parent.debug('cert', "Staging certificate received, moving to production...");
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obj.runAsProduction = true;
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obj.performMoveToProduction = false;
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obj.performRestart = true;
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setTimeout(obj.checkRenewCertificate, 10000); // Check the certificate in 10 seconds.
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}
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}
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})
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.catch(function (ex) {
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parent.debug('cert', "checkCertificate exception: (" + JSON.stringify(ex) + ")");
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console.log(ex);
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});
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} catch (ex) {
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parent.debug('cert', "checkCertificate main exception: (" + JSON.stringify(ex) + ")");
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console.log(ex);
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return ex;
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}
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return null;
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}
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return obj;
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} catch (ex) { console.log(ex); } // Unable to start Let's Encrypt
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return null;
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};
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// GreenLock v3 Manager
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module.exports.create = function (options) {
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//console.log('xxx-create', options);
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var manager = { parent: globalLetsEncrypt };
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manager.find = async function (options) {
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try {
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// GreenLock sometimes has the bad behavior of adding a wildcard cert request, remove it here if needed.
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if ((options.wildname != null) && (options.wildname != '')) { options.wildname = ''; }
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if (options.altnames) {
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var altnames2 = [];
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for (var i in options.altnames) { if (options.altnames[i].indexOf('*') == -1) { altnames2.push(options.altnames[i]); } }
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options.altnames = altnames2;
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}
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if (options.servernames) {
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var servernames2 = [];
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for (var i in options.servernames) { if (options.servernames[i].indexOf('*') == -1) { servernames2.push(options.servernames[i]); } }
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options.servernames = servernames2;
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}
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} catch (ex) { console.log(ex); }
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return Promise.resolve([{ subject: options.servername, altnames: options.altnames }]);
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};
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manager.set = function (options) {
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//console.log('xxx-set', options);
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manager.parent.parent.debug('cert', "Certificate has been set: " + JSON.stringify(options));
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if (manager.parent.parent.config.letsencrypt.production == manager.parent.runAsProduction) { manager.parent.performRestart = true; }
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else if ((manager.parent.parent.config.letsencrypt.production === true) && (manager.parent.runAsProduction === false)) { manager.parent.performMoveToProduction = true; }
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return null;
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};
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manager.remove = function (options) {
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//console.log('xxx-remove', options);
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manager.parent.parent.debug('cert', "Certificate has been removed: " + JSON.stringify(options));
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if (manager.parent.parent.config.letsencrypt.production == manager.parent.runAsProduction) { manager.parent.performRestart = true; }
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else if ((manager.parent.parent.config.letsencrypt.production === true) && (manager.parent.runAsProduction === false)) { manager.parent.performMoveToProduction = true; }
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return null;
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};
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// set the global config
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manager.defaults = async function (options) {
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//console.log('xxx-defaults', options);
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var r;
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if (manager.parent.runAsProduction === true) {
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// Production
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//console.log('LE-DEFAULTS-Production', options);
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if (options != null) { for (var i in options) { if (manager.parent.leDefaults[i] == null) { manager.parent.leDefaults[i] = options[i]; } } }
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r = manager.parent.leDefaults;
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r.subscriberEmail = manager.parent.parent.config.letsencrypt.email;
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r.sites = { mainsite: { subject: manager.parent.leDomains[0], altnames: manager.parent.leDomains } };
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} else {
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// Staging
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//console.log('LE-DEFAULTS-Staging', options);
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if (options != null) { for (var i in options) { if (manager.parent.leDefaultsStaging[i] == null) { manager.parent.leDefaultsStaging[i] = options[i]; } } }
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r = manager.parent.leDefaultsStaging;
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r.subscriberEmail = manager.parent.parent.config.letsencrypt.email;
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r.sites = { mainsite: { subject: manager.parent.leDomains[0], altnames: manager.parent.leDomains } };
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}
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return r;
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};
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return manager;
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}; |