forked from root/acme.js
531 lines
17 KiB
JavaScript
531 lines
17 KiB
JavaScript
/*!
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* acme-v2.js
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* Copyright(c) 2018 AJ ONeal <aj@ppl.family> https://ppl.family
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* Apache-2.0 OR MIT (and hence also MPL 2.0)
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*/
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'use strict';
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/* globals Promise */
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var ACME = module.exports.ACME = {};
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ACME.acmeChallengePrefix = '/.well-known/acme-challenge/';
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ACME.acmeChallengeDnsPrefix = '_acme-challenge';
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ACME.acmeChallengePrefixes = {
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'http-01': '/.well-known/acme-challenge/'
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, 'dns-01': '_acme-challenge'
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};
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ACME._getUserAgentString = function (deps) {
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var uaDefaults = {
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pkg: "Greenlock/" + deps.pkg.version
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, os: "(" + deps.os.type() + "; " + deps.process.arch + " " + deps.os.platform() + " " + deps.os.release() + ")"
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, node: "Node.js/" + deps.process.version
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, user: ''
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};
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var userAgent = [];
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//Object.keys(currentUAProps)
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Object.keys(uaDefaults).forEach(function (key) {
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if (uaDefaults[key]) {
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userAgent.push(uaDefaults[key]);
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}
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});
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return userAgent.join(' ').trim();
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};
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ACME._directory = function (me) {
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return me._request({ url: me.directoryUrl, json: true });
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};
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ACME._getNonce = function (me) {
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if (me._nonce) { return new Promise(function (resolve) { resolve(me._nonce); return; }); }
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return me._request({ method: 'HEAD', url: me._directoryUrls.newNonce }).then(function (resp) {
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me._nonce = resp.toJSON().headers['replay-nonce'];
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return me._nonce;
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});
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};
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// ACME RFC Section 7.3 Account Creation
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/*
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{
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"protected": base64url({
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"alg": "ES256",
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"jwk": {...},
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"nonce": "6S8IqOGY7eL2lsGoTZYifg",
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"url": "https://example.com/acme/new-account"
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}),
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"payload": base64url({
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"termsOfServiceAgreed": true,
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"onlyReturnExisting": false,
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"contact": [
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"mailto:cert-admin@example.com",
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"mailto:admin@example.com"
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]
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}),
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"signature": "RZPOnYoPs1PhjszF...-nh6X1qtOFPB519I"
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}
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*/
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ACME._registerAccount = function (me, options) {
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if (me.debug) { console.log('[acme-v2] accounts.create'); }
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return ACME._getNonce(me).then(function () {
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return new Promise(function (resolve, reject) {
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function agree(tosUrl) {
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var err;
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if (me._tos !== tosUrl) {
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err = new Error("You must agree to the ToS at '" + me._tos + "'");
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err.code = "E_AGREE_TOS";
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reject(err);
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return;
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}
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var jwk = me.RSA.exportPublicJwk(options.accountKeypair);
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var body = {
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termsOfServiceAgreed: tosUrl === me._tos
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, onlyReturnExisting: false
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, contact: [ 'mailto:' + options.email ]
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};
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if (options.externalAccount) {
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body.externalAccountBinding = me.RSA.signJws(
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options.externalAccount.secret
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, undefined
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, { alg: "HS256"
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, kid: options.externalAccount.id
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, url: me._directoryUrls.newAccount
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}
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, new Buffer(JSON.stringify(jwk))
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);
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}
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var payload = JSON.stringify(body);
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var jws = me.RSA.signJws(
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options.accountKeypair
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, undefined
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, { nonce: me._nonce
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, alg: 'RS256'
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, url: me._directoryUrls.newAccount
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, jwk: jwk
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}
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, new Buffer(payload)
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);
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delete jws.header;
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if (me.debug) { console.log('[acme-v2] accounts.create JSON body:'); }
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if (me.debug) { console.log(jws); }
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me._nonce = null;
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return me._request({
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method: 'POST'
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, url: me._directoryUrls.newAccount
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, headers: { 'Content-Type': 'application/jose+json' }
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, json: jws
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}).then(function (resp) {
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me._nonce = resp.toJSON().headers['replay-nonce'];
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var location = resp.toJSON().headers.location;
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if (me.debug) {
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// the account id url
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console.log('[DEBUG] new account location:');
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console.log(location); // the account id url
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console.log(resp.toJSON());
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}
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me._kid = location;
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return resp.body;
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}).then(resolve, reject);
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}
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if (me.debug) { console.log('[acme-v2] agreeToTerms'); }
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if (1 === options.agreeToTerms.length) {
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return options.agreeToTerms(me._tos).then(agree, reject);
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}
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else if (2 === options.agreeToTerms.length) {
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return options.agreeToTerms(me._tos, function (err, tosUrl) {
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if (!err) { agree(tosUrl); return; }
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reject(err);
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});
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}
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else {
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reject(new Error('agreeToTerms has incorrect function signature.'
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+ ' Should be fn(tos) { return Promise<tos>; }'));
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}
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});
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});
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};
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/*
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POST /acme/new-order HTTP/1.1
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Host: example.com
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Content-Type: application/jose+json
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{
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"protected": base64url({
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"alg": "ES256",
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"kid": "https://example.com/acme/acct/1",
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"nonce": "5XJ1L3lEkMG7tR6pA00clA",
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"url": "https://example.com/acme/new-order"
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}),
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"payload": base64url({
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"identifiers": [{"type:"dns","value":"example.com"}],
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"notBefore": "2016-01-01T00:00:00Z",
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"notAfter": "2016-01-08T00:00:00Z"
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}),
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"signature": "H6ZXtGjTZyUnPeKn...wEA4TklBdh3e454g"
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}
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*/
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ACME._getChallenges = function (me, options, auth) {
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if (me.debug) { console.log('\n[DEBUG] getChallenges\n'); }
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return me._request({ method: 'GET', url: auth, json: true }).then(function (resp) {
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return resp.body;
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});
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};
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ACME._wait = function wait(ms) {
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return new Promise(function (resolve) {
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setTimeout(resolve, (ms || 1100));
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});
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};
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// https://tools.ietf.org/html/draft-ietf-acme-acme-10#section-7.5.1
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ACME._postChallenge = function (me, options, identifier, ch) {
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var body = { };
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var payload = JSON.stringify(body);
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var thumbprint = me.RSA.thumbprint(options.accountKeypair);
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var keyAuthorization = ch.token + '.' + thumbprint;
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// keyAuthorization = token || '.' || base64url(JWK_Thumbprint(accountKey))
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// /.well-known/acme-challenge/:token
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return new Promise(function (resolve, reject) {
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function failChallenge(err) {
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if (err) { reject(err); return; }
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testChallenge();
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}
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function testChallenge() {
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// TODO put check dns / http checks here?
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// http-01: GET https://example.org/.well-known/acme-challenge/{{token}} => {{keyAuth}}
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// dns-01: TXT _acme-challenge.example.org. => "{{urlSafeBase64(sha256(keyAuth))}}"
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function pollStatus() {
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if (me.debug) { console.log('\n[DEBUG] statusChallenge\n'); }
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return me._request({ method: 'GET', url: ch.url, json: true }).then(function (resp) {
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console.error('poll: resp.body:');
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console.error(resp.body);
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if ('pending' === resp.body.status) {
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if (me.debug) { console.log('poll: again'); }
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return ACME._wait(1 * 1000).then(pollStatus);
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}
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if ('valid' === resp.body.status) {
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if (me.debug) { console.log('poll: valid'); }
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try {
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if (1 === options.removeChallenge.length) {
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options.removeChallenge(
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{ identifier: identifier
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, hostname: identifier.value
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, type: ch.type
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, token: ch.token
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, thumbprint: thumbprint
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, keyAuthorization: keyAuthorization
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, dnsAuthorization: me.RSA.utils.toWebsafeBase64(
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require('crypto').createHash('sha256').update(keyAuthorization).digest('base64')
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)
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}
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).then(function () {}, function () {});
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} else if (2 === options.removeChallenge.length) {
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options.removeChallenge(
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{ identifier: identifier
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, hostname: identifier.value
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, type: ch.type
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, token: ch.token
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, thumbprint: thumbprint
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, keyAuthorization: keyAuthorization
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, dnsAuthorization: me.RSA.utils.toWebsafeBase64(
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require('crypto').createHash('sha256').update(keyAuthorization).digest('base64')
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)
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}
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, function (err) { return err; }
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);
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} else {
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options.removeChallenge(identifier.value, ch.token, function () {});
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}
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} catch(e) {}
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return resp.body;
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}
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if (!resp.body.status) {
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console.error("[acme-v2] (y) bad challenge state:");
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}
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else if ('invalid' === resp.body.status) {
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console.error("[acme-v2] (x) invalid challenge state:");
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}
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else {
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console.error("[acme-v2] (z) bad challenge state:");
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}
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return Promise.reject(new Error("[acme-v2] bad challenge state"));
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});
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}
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if (me.debug) {console.log('\n[DEBUG] postChallenge\n'); }
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//console.log('\n[DEBUG] stop to fix things\n'); return;
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function post() {
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var jws = me.RSA.signJws(
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options.accountKeypair
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, undefined
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, { nonce: me._nonce, alg: 'RS256', url: ch.url, kid: me._kid }
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, new Buffer(payload)
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);
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me._nonce = null;
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return me._request({
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method: 'POST'
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, url: ch.url
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, headers: { 'Content-Type': 'application/jose+json' }
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, json: jws
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}).then(function (resp) {
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me._nonce = resp.toJSON().headers['replay-nonce'];
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if (me.debug) { console.log('respond to challenge: resp.body:'); }
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if (me.debug) { console.log(resp.body); }
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return ACME._wait(1 * 1000).then(pollStatus).then(resolve, reject);
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});
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}
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return ACME._wait(1 * 1000).then(post);
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}
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try {
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if (1 === options.setChallenge.length) {
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options.setChallenge(
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{ identifier: identifier
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, hostname: identifier.value
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, type: ch.type
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, token: ch.token
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, thumbprint: thumbprint
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, keyAuthorization: keyAuthorization
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, dnsAuthorization: me.RSA.utils.toWebsafeBase64(
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require('crypto').createHash('sha256').update(keyAuthorization).digest('base64')
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)
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}
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).then(testChallenge, reject);
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} else if (2 === options.setChallenge.length) {
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options.setChallenge(
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{ identifier: identifier
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, hostname: identifier.value
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, type: ch.type
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, token: ch.token
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, thumbprint: thumbprint
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, keyAuthorization: keyAuthorization
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, dnsAuthorization: me.RSA.utils.toWebsafeBase64(
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require('crypto').createHash('sha256').update(keyAuthorization).digest('base64')
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)
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}
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, failChallenge
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);
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} else {
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options.setChallenge(identifier.value, ch.token, keyAuthorization, failChallenge);
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}
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} catch(e) {
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reject(e);
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}
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});
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};
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ACME._finalizeOrder = function (me, options, validatedDomains) {
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if (me.debug) { console.log('finalizeOrder:'); }
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var csr = me.RSA.generateCsrWeb64(options.domainKeypair, validatedDomains);
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var body = { csr: csr };
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var payload = JSON.stringify(body);
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function pollCert() {
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var jws = me.RSA.signJws(
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options.accountKeypair
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, undefined
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, { nonce: me._nonce, alg: 'RS256', url: me._finalize, kid: me._kid }
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, new Buffer(payload)
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);
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if (me.debug) { console.log('finalize:', me._finalize); }
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me._nonce = null;
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return me._request({
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method: 'POST'
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, url: me._finalize
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, headers: { 'Content-Type': 'application/jose+json' }
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, json: jws
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}).then(function (resp) {
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me._nonce = resp.toJSON().headers['replay-nonce'];
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if (me.debug) { console.log('order finalized: resp.body:'); }
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if (me.debug) { console.log(resp.body); }
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if ('processing' === resp.body.status) {
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return ACME._wait().then(pollCert);
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}
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if ('valid' === resp.body.status) {
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me._expires = resp.body.expires;
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me._certificate = resp.body.certificate;
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return resp.body;
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}
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if ('invalid' === resp.body.status) {
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console.error('cannot finalize: badness');
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return;
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}
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console.error('(x) cannot finalize: badness');
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return;
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});
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}
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return pollCert();
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};
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ACME._getCertificate = function (me, options) {
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if (me.debug) { console.log('[acme-v2] DEBUG get cert 1'); }
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if (!options.challengeTypes) {
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if (!options.challengeType) {
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return Promise.reject(new Error("challenge type must be specified"));
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}
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options.challengeTypes = [ options.challengeType ];
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}
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if (me.debug) { console.log('[acme-v2] certificates.create'); }
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return ACME._getNonce(me).then(function () {
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if (me.debug) { console.log("27 &#&#&#&#&#&#&&##&#&#&#&#&#&#&#&"); }
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var body = {
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identifiers: options.domains.map(function (hostname) {
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return { type: "dns" , value: hostname };
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})
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//, "notBefore": "2016-01-01T00:00:00Z"
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//, "notAfter": "2016-01-08T00:00:00Z"
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};
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var payload = JSON.stringify(body);
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var jws = me.RSA.signJws(
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options.accountKeypair
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, undefined
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, { nonce: me._nonce, alg: 'RS256', url: me._directoryUrls.newOrder, kid: me._kid }
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, new Buffer(payload)
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);
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if (me.debug) { console.log('\n[DEBUG] newOrder\n'); }
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me._nonce = null;
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return me._request({
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method: 'POST'
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, url: me._directoryUrls.newOrder
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, headers: { 'Content-Type': 'application/jose+json' }
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, json: jws
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}).then(function (resp) {
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me._nonce = resp.toJSON().headers['replay-nonce'];
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var location = resp.toJSON().headers.location;
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var auths;
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if (me.debug) {
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console.log(location); // the account id url
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console.log(resp.toJSON());
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}
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me._authorizations = resp.body.authorizations;
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me._order = location;
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me._finalize = resp.body.finalize;
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//console.log('[DEBUG] finalize:', me._finalize); return;
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if (!me._authorizations) {
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console.error("[acme-v2.js] authorizations were not fetched");
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}
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if (me.debug) { console.log("47 &#&#&#&#&#&#&&##&#&#&#&#&#&#&#&"); }
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//return resp.body;
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auths = me._authorizations.slice(0);
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function next() {
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var authUrl = auths.shift();
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if (!authUrl) { return; }
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return ACME._getChallenges(me, options, authUrl).then(function (results) {
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// var domain = options.domains[i]; // results.identifier.value
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var chType = options.challengeTypes.filter(function (chType) {
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return results.challenges.some(function (ch) {
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return ch.type === chType;
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});
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})[0];
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var challenge = results.challenges.filter(function (ch) {
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if (chType === ch.type) {
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return ch;
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}
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})[0];
|
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|
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if (!challenge) {
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return Promise.reject(new Error("Server didn't offer any challenge we can handle."));
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}
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return ACME._postChallenge(me, options, results.identifier, challenge);
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}).then(function () {
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return next();
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});
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}
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return next().then(function () {
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if (me.debug) { console.log("37 &#&#&#&#&#&#&&##&#&#&#&#&#&#&#&"); }
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var validatedDomains = body.identifiers.map(function (ident) {
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return ident.value;
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});
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return ACME._finalizeOrder(me, options, validatedDomains);
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}).then(function () {
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return me._request({ method: 'GET', url: me._certificate, json: true }).then(function (resp) {
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return resp.body;
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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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ACME.create = function create(me) {
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if (!me) { me = {}; }
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me.acmeChallengePrefix = ACME.acmeChallengePrefix;
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me.acmeChallengeDnsPrefix = ACME.acmeChallengeDnsPrefix;
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me.acmeChallengePrefixes = ACME.acmeChallengePrefixes;
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me.RSA = me.RSA || require('rsa-compat').RSA;
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me.request = me.request || require('request');
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me.promisify = me.promisify || require('util').promisify;
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|
|
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if ('function' !== typeof me.getUserAgentString) {
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me.pkg = me.pkg || require('./package.json');
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me.os = me.os || require('os');
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me.process = me.process || require('process');
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me.userAgent = ACME._getUserAgentString(me);
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}
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|
function getRequest(opts) {
|
|
if (!opts) { opts = {}; }
|
|
|
|
return me.request.defaults({
|
|
headers: {
|
|
'User-Agent': opts.userAgent || me.userAgent || me.getUserAgentString(me)
|
|
}
|
|
});
|
|
}
|
|
|
|
if ('function' !== typeof me._request) {
|
|
me._request = me.promisify(getRequest({}));
|
|
}
|
|
|
|
me.init = function (_directoryUrl) {
|
|
me.directoryUrl = me.directoryUrl || _directoryUrl;
|
|
return ACME._directory(me).then(function (resp) {
|
|
me._directoryUrls = resp.body;
|
|
me._tos = me._directoryUrls.meta.termsOfService;
|
|
return me._directoryUrls;
|
|
});
|
|
};
|
|
me.accounts = {
|
|
create: function (options) {
|
|
return ACME._registerAccount(me, options);
|
|
}
|
|
};
|
|
me.certificates = {
|
|
create: function (options) {
|
|
return ACME._getCertificate(me, options);
|
|
}
|
|
};
|
|
return me;
|
|
};
|