ACME dns-01 challenge reference implementation for Greenlock v2.7+ (and v3).
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
'use strict';
var le;
var fetch = require('node-fetch');
var LE = require('greenlock');
var leChallengeDns = require('./index.js').create({ debug: false })
// Storage Backend
var leStore = require('le-store-certbot').create({
configDir: '~/letsencrypt/etc' // or /etc/letsencrypt or wherever
, debug: true
, logsDir: '~/letsencrypt/var/log'
});
function leAgree(opts, agreeCb) {
// opts = { email, domains, tosUrl }
agreeCb(null, opts.tosUrl);
}
let subdomain = String(Math.random()).replace('.','');
le = LE.create({
server: LE.productionServerUrl // Change to LE.productionServerUrl in production
, challengeType: 'dns-01'
, challenges: {
'dns-01': leChallengeDns
}
, approveDomains: [ subdomain + '.box.knilxof.org' ]
, agreeToTerms: leAgree // hook to allow user to view and accept LE TOS
, debug: true
, store: leStore
});
// Check in-memory cache of certificates for the named domain
le.check({ domains: [ subdomain + '.box.knilxof.org' ] }).then(function (results) {
if (results) {
// we already have certificates
return;
}
let token;
let challenge;
// promise to be called when LE has the dns challenge ready for us
leChallengeDns.leDnsResponse = function(challenge, keyAuthorization, keyAuthDigest, challengeDomain, domain){
console.info("");
console.info("Challenge for '" + domain + "'");
console.info("");
console.info("We now present (for you copy-and-paste pleasure) your ACME Challenge");
console.info("public Challenge and secret KeyAuthorization and Digest, in that order, respectively:");
console.info(challenge);
console.info(keyAuthorization);
console.info(keyAuthDigest);
console.info("");
console.info(challengeDomain + "\tTXT " + keyAuthDigest + "\tTTL 60");
console.info("");
console.info(JSON.stringify({
domain: domain
, challenge: challenge
, keyAuthorization: keyAuthorization
, keyAuthDigest: keyAuthDigest
}, null, ' ').replace(/^/gm, '\t'));
console.info("");
return new Promise((resolve, reject) => {
// ok now that we have a challenge, we call our gateway to setup the TXT record
fetch('http://knilxof.org//dnsconfig?token=' + token + '&challenge=' + keyAuthDigest)
.then(function(res) { return res.text(); }).then(function(body) {
console.log(body);
resolve("Success!");
});
});
}
fetch('http://knilxof.org/subscribe?name=' + subdomain)
.then(function (res) { return res.text(); })
.then(function (body) {
const jsonBody = JSON.parse(body);
token = jsonBody.token;
// Register Let's Encrypt
le.register({
domains: [subdomain + '.box.knilxof.org'] // CHANGE TO YOUR DOMAIN (list for SANS)
, email: 'john.doe@example.com' // CHANGE TO YOUR EMAIL
, agreeTos: true // set to tosUrl string (or true) to pre-approve (and skip agreeToTerms)
, rsaKeySize: 2048 // 2048 or higher
, challengeType: 'dns-01' // http-01, tls-sni-01, or dns-01
}).then(function (results) {
console.log('success');
}, function (err) {
console.error('[Error]: node-greenlock/examples/standalone');
console.error(err.stack);
});
});
});