386 lines
17 KiB
JavaScript
386 lines
17 KiB
JavaScript
'use strict';
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exports = module.exports = {
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ensureFallbackCertificate: ensureFallbackCertificate,
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renewAll: renewAll,
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setFallbackCertificate: setFallbackCertificate,
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setAdminCertificate: setAdminCertificate,
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CertificatesError: CertificatesError,
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validateCertificate: validateCertificate,
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ensureCertificate: ensureCertificate,
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getAdminCertificatePath: getAdminCertificatePath,
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adminCertificateExists: adminCertificateExists,
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// exported for testing
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_getApi: getApi
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};
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var acme = require('./cert/acme.js'),
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apps = require('./apps.js'),
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assert = require('assert'),
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async = require('async'),
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caas = require('./cert/caas.js'),
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config = require('./config.js'),
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constants = require('./constants.js'),
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debug = require('debug')('box:src/certificates'),
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eventlog = require('./eventlog.js'),
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fallback = require('./cert/fallback.js'),
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fs = require('fs'),
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mailer = require('./mailer.js'),
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nginx = require('./nginx.js'),
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path = require('path'),
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paths = require('./paths.js'),
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safe = require('safetydance'),
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settings = require('./settings.js'),
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user = require('./user.js'),
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util = require('util'),
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x509 = require('x509');
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function CertificatesError(reason, errorOrMessage) {
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assert.strictEqual(typeof reason, 'string');
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assert(errorOrMessage instanceof Error || typeof errorOrMessage === 'string' || typeof errorOrMessage === 'undefined');
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Error.call(this);
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Error.captureStackTrace(this, this.constructor);
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this.name = this.constructor.name;
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this.reason = reason;
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if (typeof errorOrMessage === 'undefined') {
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this.message = reason;
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} else if (typeof errorOrMessage === 'string') {
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this.message = errorOrMessage;
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} else {
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this.message = 'Internal error';
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this.nestedError = errorOrMessage;
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}
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}
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util.inherits(CertificatesError, Error);
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CertificatesError.INTERNAL_ERROR = 'Internal Error';
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CertificatesError.INVALID_CERT = 'Invalid certificate';
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CertificatesError.NOT_FOUND = 'Not Found';
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function getApi(app, callback) {
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assert.strictEqual(typeof app, 'object');
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assert.strictEqual(typeof callback, 'function');
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settings.getTlsConfig(function (error, tlsConfig) {
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if (error) return callback(error);
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if (tlsConfig.provider === 'fallback') return callback(null, fallback, {});
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// use acme if we have altDomain or the tlsConfig is not caas
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var api = (app.altDomain || tlsConfig.provider) !== 'caas' ? acme : caas;
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var options = { };
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if (tlsConfig.provider === 'caas') {
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options.prod = !config.isDev(); // with altDomain, we will choose acme setting based on this
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} else { // acme
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options.prod = tlsConfig.provider.match(/.*-prod/) !== null;
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}
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// registering user with an email requires A or MX record (https://github.com/letsencrypt/boulder/issues/1197)
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// we cannot use admin@fqdn because the user might not have set it up.
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// we simply update the account with the latest email we have each time when getting letsencrypt certs
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// https://github.com/ietf-wg-acme/acme/issues/30
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user.getOwner(function (error, owner) {
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options.email = error ? 'support@cloudron.io' : (owner.alternateEmail || owner.email); // can error if not activated yet
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callback(null, api, options);
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});
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});
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}
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function ensureFallbackCertificate(callback) {
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// ensure a fallback certificate that much of our code requires
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var certFilePath = path.join(paths.APP_CERTS_DIR, 'host.cert');
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var keyFilePath = path.join(paths.APP_CERTS_DIR, 'host.key');
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var fallbackCertPath = path.join(paths.NGINX_CERT_DIR, 'host.cert');
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var fallbackKeyPath = path.join(paths.NGINX_CERT_DIR, 'host.key');
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if (fs.existsSync(certFilePath) && fs.existsSync(keyFilePath)) { // existing custom fallback certs (when restarting, restoring, updating)
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debug('ensureFallbackCertificate: using fallback certs provided by user');
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if (!safe.child_process.execSync('cp ' + certFilePath + ' ' + fallbackCertPath)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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if (!safe.child_process.execSync('cp ' + keyFilePath + ' ' + fallbackKeyPath)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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return callback();
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}
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if (config.tlsCert() && config.tlsKey()) {
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// cert from CaaS or cloudron-setup. these files should _not_ be part of the backup
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debug('ensureFallbackCertificate: using CaaS/cloudron-setup fallback certs');
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if (!safe.fs.writeFileSync(fallbackCertPath, config.tlsCert())) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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if (!safe.fs.writeFileSync(fallbackKeyPath, config.tlsKey())) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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return callback();
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}
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// generate a self-signed cert. it's in backup dir so that we don't create a new cert across restarts
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// FIXME: this cert does not cover the naked domain. needs SAN
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if (config.fqdn()) {
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debug('ensureFallbackCertificate: generating self-signed certificate');
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var certCommand = util.format('openssl req -x509 -newkey rsa:2048 -keyout %s -out %s -days 3650 -subj /CN=*.%s -nodes', keyFilePath, certFilePath, config.fqdn());
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safe.child_process.execSync(certCommand);
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if (!safe.child_process.execSync('cp ' + certFilePath + ' ' + fallbackCertPath)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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if (!safe.child_process.execSync('cp ' + keyFilePath + ' ' + fallbackKeyPath)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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return callback();
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} else {
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debug('ensureFallbackCertificate: cannot generate fallback certificate without domain');
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return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, 'No domain set'));
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}
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}
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function isExpiringSync(certFilePath, hours) {
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assert.strictEqual(typeof certFilePath, 'string');
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assert.strictEqual(typeof hours, 'number');
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if (!fs.existsSync(certFilePath)) return 2; // not found
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var result = safe.child_process.spawnSync('/usr/bin/openssl', [ 'x509', '-checkend', String(60 * 60 * hours), '-in', certFilePath ]);
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debug('isExpiringSync: %s %s %s', certFilePath, result.stdout.toString('utf8').trim(), result.status);
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return result.status === 1; // 1 - expired 0 - not expired
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}
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function renewAll(auditSource, callback) {
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assert.strictEqual(typeof auditSource, 'object');
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assert.strictEqual(typeof callback, 'function');
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debug('renewAll: Checking certificates for renewal');
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apps.getAll(function (error, allApps) {
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if (error) return callback(error);
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allApps.push({ location: constants.ADMIN_LOCATION }); // inject fake webadmin app
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var expiringApps = [ ];
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for (var i = 0; i < allApps.length; i++) {
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var appDomain = allApps[i].altDomain || config.appFqdn(allApps[i].location);
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var certFilePath = path.join(paths.APP_CERTS_DIR, appDomain + '.user.cert');
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var keyFilePath = path.join(paths.APP_CERTS_DIR, appDomain + '.user.key');
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if (safe.fs.existsSync(certFilePath) && safe.fs.existsSync(keyFilePath)) {
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debug('renewAll: existing user key file for %s. skipping', appDomain);
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continue;
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}
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// check if we have an auto cert to be renewed
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certFilePath = path.join(paths.APP_CERTS_DIR, appDomain + '.cert');
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keyFilePath = path.join(paths.APP_CERTS_DIR, appDomain + '.key');
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if (!safe.fs.existsSync(keyFilePath)) {
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debug('renewAll: no existing key file for %s. skipping', appDomain);
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continue;
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}
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if (isExpiringSync(certFilePath, 24 * 30)) { // expired or not found
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expiringApps.push(allApps[i]);
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}
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}
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debug('renewAll: %j needs to be renewed', expiringApps.map(function (a) { return a.altDomain || config.appFqdn(a.location); }));
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async.eachSeries(expiringApps, function iterator(app, iteratorCallback) {
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var domain = app.altDomain || config.appFqdn(app.location);
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getApi(app, function (error, api, apiOptions) {
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if (error) return callback(error);
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debug('renewAll: renewing cert for %s with options %j', domain, apiOptions);
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api.getCertificate(domain, apiOptions, function (error) {
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var certFilePath = path.join(paths.APP_CERTS_DIR, domain + '.cert');
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var keyFilePath = path.join(paths.APP_CERTS_DIR, domain + '.key');
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var errorMessage = error ? error.message : '';
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eventlog.add(eventlog.ACTION_CERTIFICATE_RENEWAL, auditSource, { domain: domain, errorMessage: errorMessage });
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if (error) {
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debug('renewAll: could not renew cert for %s because %s', domain, error);
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mailer.certificateRenewalError(domain, errorMessage);
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// check if we should fallback if we expire in the coming day
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if (!isExpiringSync(certFilePath, 24 * 1)) return iteratorCallback();
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debug('renewAll: using fallback certs for %s since it expires soon', domain, error);
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certFilePath = 'cert/host.cert';
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keyFilePath = 'cert/host.key';
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} else {
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debug('renewAll: certificate for %s renewed', domain);
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}
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// reconfigure and reload nginx. this is required for the case where we got a renewed cert after fallback
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var configureFunc = app.location === constants.ADMIN_LOCATION ?
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nginx.configureAdmin.bind(null, certFilePath, keyFilePath, constants.NGINX_ADMIN_CONFIG_FILE_NAME, config.adminFqdn())
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: nginx.configureApp.bind(null, app, certFilePath, keyFilePath);
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configureFunc(function (ignoredError) {
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if (ignoredError) debug('fallbackExpiredCertificates: error reconfiguring app', ignoredError);
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iteratorCallback(); // move to next app
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});
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});
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});
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});
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});
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}
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// note: https://tools.ietf.org/html/rfc4346#section-7.4.2 (certificate_list) requires that the
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// servers certificate appears first (and not the intermediate cert)
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function validateCertificate(cert, key, fqdn) {
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assert(cert === null || typeof cert === 'string');
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assert(key === null || typeof key === 'string');
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assert.strictEqual(typeof fqdn, 'string');
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if (cert === null && key === null) return null;
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if (!cert && key) return new Error('missing cert');
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if (cert && !key) return new Error('missing key');
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var content;
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try {
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content = x509.parseCert(cert);
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} catch (e) {
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return new Error('invalid cert: ' + e.message);
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}
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// check expiration
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if (content.notAfter < new Date()) return new Error('cert expired');
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function matchesDomain(domain) {
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if (domain === fqdn) return true;
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if (domain.indexOf('*') === 0 && domain.slice(2) === fqdn.slice(fqdn.indexOf('.') + 1)) return true;
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return false;
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}
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// check domain
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var domains = content.altNames.concat(content.subject.commonName);
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if (!domains.some(matchesDomain)) return new Error(util.format('cert is not valid for this domain. Expecting %s in %j', fqdn, domains));
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// http://httpd.apache.org/docs/2.0/ssl/ssl_faq.html#verify
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var certModulus = safe.child_process.execSync('openssl x509 -noout -modulus', { encoding: 'utf8', input: cert });
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var keyModulus = safe.child_process.execSync('openssl rsa -noout -modulus', { encoding: 'utf8', input: key });
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if (certModulus !== keyModulus) return new Error('key does not match the cert');
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return null;
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}
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function setFallbackCertificate(cert, key, callback) {
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assert.strictEqual(typeof cert, 'string');
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assert.strictEqual(typeof key, 'string');
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assert.strictEqual(typeof callback, 'function');
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var error = validateCertificate(cert, key, '*.' + config.fqdn());
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if (error) return callback(new CertificatesError(CertificatesError.INVALID_CERT, error.message));
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// backup the cert
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if (!safe.fs.writeFileSync(path.join(paths.APP_CERTS_DIR, 'host.cert'), cert)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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if (!safe.fs.writeFileSync(path.join(paths.APP_CERTS_DIR, 'host.key'), key)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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// copy over fallback cert
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if (!safe.fs.writeFileSync(path.join(paths.NGINX_CERT_DIR, 'host.cert'), cert)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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if (!safe.fs.writeFileSync(path.join(paths.NGINX_CERT_DIR, 'host.key'), key)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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nginx.reload(function (error) {
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if (error) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, error));
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return callback(null);
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});
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}
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function getFallbackCertificatePath(callback) {
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assert.strictEqual(typeof callback, 'function');
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// any user fallback cert is always copied over to nginx cert dir
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callback(null, path.join(paths.NGINX_CERT_DIR, 'host.cert'), path.join(paths.NGINX_CERT_DIR, 'host.key'));
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}
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// FIXME: setting admin cert needs to restart the mail container because it uses admin cert
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function setAdminCertificate(cert, key, callback) {
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assert.strictEqual(typeof cert, 'string');
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assert.strictEqual(typeof key, 'string');
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assert.strictEqual(typeof callback, 'function');
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var vhost = config.adminFqdn();
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var certFilePath = path.join(paths.APP_CERTS_DIR, vhost + '.cert');
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var keyFilePath = path.join(paths.APP_CERTS_DIR, vhost + '.key');
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var error = validateCertificate(cert, key, vhost);
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if (error) return callback(new CertificatesError(CertificatesError.INVALID_CERT, error.message));
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// backup the cert
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if (!safe.fs.writeFileSync(certFilePath, cert)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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if (!safe.fs.writeFileSync(keyFilePath, key)) return callback(new CertificatesError(CertificatesError.INTERNAL_ERROR, safe.error.message));
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nginx.configureAdmin(certFilePath, keyFilePath, constants.NGINX_ADMIN_CONFIG_FILE_NAME, config.adminFqdn(), callback);
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}
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function getAdminCertificatePath(callback) {
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assert.strictEqual(typeof callback, 'function');
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var vhost = config.adminFqdn();
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var certFilePath = path.join(paths.APP_CERTS_DIR, vhost + '.cert');
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var keyFilePath = path.join(paths.APP_CERTS_DIR, vhost + '.key');
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if (fs.existsSync(certFilePath) && fs.existsSync(keyFilePath)) return callback(null, certFilePath, keyFilePath);
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getFallbackCertificatePath(callback);
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}
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function adminCertificateExists() {
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var vhost = config.adminFqdn();
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var certFilePath = path.join(paths.APP_CERTS_DIR, vhost + '.cert');
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var keyFilePath = path.join(paths.APP_CERTS_DIR, vhost + '.key');
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return (fs.existsSync(certFilePath) && fs.existsSync(keyFilePath));
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}
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function ensureCertificate(app, callback) {
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assert.strictEqual(typeof app, 'object');
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assert.strictEqual(typeof callback, 'function');
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var domain = app.altDomain || config.appFqdn(app.location);
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var certFilePath = path.join(paths.APP_CERTS_DIR, domain + '.user.cert');
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var keyFilePath = path.join(paths.APP_CERTS_DIR, domain + '.user.key');
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if (fs.existsSync(certFilePath) && fs.existsSync(keyFilePath)) {
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debug('ensureCertificate: %s. user certificate already exists at %s', domain, keyFilePath);
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return callback(null, certFilePath, keyFilePath);
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}
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certFilePath = path.join(paths.APP_CERTS_DIR, domain + '.cert');
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keyFilePath = path.join(paths.APP_CERTS_DIR, domain + '.key');
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if (fs.existsSync(certFilePath) && fs.existsSync(keyFilePath)) {
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debug('ensureCertificate: %s. certificate already exists at %s', domain, keyFilePath);
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if (!isExpiringSync(certFilePath, 24 * 1)) return callback(null, certFilePath, keyFilePath);
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debug('ensureCertificate: %s cert require renewal', domain);
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} else {
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debug('ensureCertificate: %s cert does not exist', domain);
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}
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getApi(app, function (error, api, apiOptions) {
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if (error) return callback(error);
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debug('ensureCertificate: getting certificate for %s with options %j', domain, apiOptions);
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api.getCertificate(domain, apiOptions, function (error, certFilePath, keyFilePath) {
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if (error) {
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debug('ensureCertificate: could not get certificate. using fallback certs', error);
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return callback(null, 'cert/host.cert', 'cert/host.key'); // use fallback certs
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}
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callback(null, certFilePath, keyFilePath);
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});
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});
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}
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