/*! * acme-v2.js * Copyright(c) 2018 AJ ONeal https://ppl.family * Apache-2.0 OR MIT (and hence also MPL 2.0) */ 'use strict'; /* globals Promise */ var ACME = module.exports.ACME = {}; ACME.formatPemChain = function formatPemChain(str) { return str.trim().replace(/[\r\n]+/g, '\n').replace(/\-\n\-/g, '-\n\n-') + '\n'; }; ACME.splitPemChain = function splitPemChain(str) { return str.trim().split(/[\r\n]{2,}/g).map(function (str) { return str + '\n'; }); }; ACME.challengePrefixes = { 'http-01': '/.well-known/acme-challenge' , 'dns-01': '_acme-challenge' }; ACME.challengeTests = { 'http-01': function (me, auth) { var url = 'http://' + auth.hostname + ACME.challengePrefixes['http-01'] + '/' + auth.token; return me._request({ url: url }).then(function (resp) { var err; if (auth.keyAuthorization === resp.body.toString('utf8').trim()) { return true; } err = new Error( "Error: Failed HTTP-01 Dry Run.\n" + "curl '" + url + "' does not return '" + auth.keyAuthorization + "'\n" + "See https://git.coolaj86.com/coolaj86/acme-v2.js/issues/4" ); err.code = 'E_FAIL_DRY_CHALLENGE'; return Promise.reject(err); }); } , 'dns-01': function (me, auth) { var hostname = ACME.challengePrefixes['dns-01'] + '.' + auth.hostname; return me._dig({ type: 'TXT' , name: hostname }).then(function (ans) { var err; if (ans.answer.some(function (txt) { return auth.dnsAuthorization === txt.data[0]; })) { return true; } err = new Error( "Error: Failed DNS-01 Dry Run.\n" + "dig TXT '" + hostname + "' does not return '" + auth.dnsAuthorization + "'\n" + "See https://git.coolaj86.com/coolaj86/acme-v2.js/issues/4" ); err.code = 'E_FAIL_DRY_CHALLENGE'; return Promise.reject(err); }); } }; ACME._getUserAgentString = function (deps) { var uaDefaults = { pkg: "Greenlock/" + deps.pkg.version , os: "(" + deps.os.type() + "; " + deps.process.arch + " " + deps.os.platform() + " " + deps.os.release() + ")" , node: "Node.js/" + deps.process.version , user: '' }; var userAgent = []; //Object.keys(currentUAProps) Object.keys(uaDefaults).forEach(function (key) { if (uaDefaults[key]) { userAgent.push(uaDefaults[key]); } }); return userAgent.join(' ').trim(); }; ACME._directory = function (me) { return me._request({ url: me.directoryUrl, json: true }); }; ACME._getNonce = function (me) { if (me._nonce) { return new Promise(function (resolve) { resolve(me._nonce); return; }); } return me._request({ method: 'HEAD', url: me._directoryUrls.newNonce }).then(function (resp) { me._nonce = resp.toJSON().headers['replay-nonce']; return me._nonce; }); }; // ACME RFC Section 7.3 Account Creation /* { "protected": base64url({ "alg": "ES256", "jwk": {...}, "nonce": "6S8IqOGY7eL2lsGoTZYifg", "url": "https://example.com/acme/new-account" }), "payload": base64url({ "termsOfServiceAgreed": true, "onlyReturnExisting": false, "contact": [ "mailto:cert-admin@example.com", "mailto:admin@example.com" ] }), "signature": "RZPOnYoPs1PhjszF...-nh6X1qtOFPB519I" } */ ACME._registerAccount = function (me, options) { if (me.debug) { console.debug('[acme-v2] accounts.create'); } return ACME._getNonce(me).then(function () { return new Promise(function (resolve, reject) { function agree(tosUrl) { var err; if (me._tos !== tosUrl) { err = new Error("You must agree to the ToS at '" + me._tos + "'"); err.code = "E_AGREE_TOS"; reject(err); return; } var jwk = me.RSA.exportPublicJwk(options.accountKeypair); var contact; if (options.contact) { contact = options.contact.slice(0); } else if (options.email) { contact = [ 'mailto:' + options.email ]; } var body = { termsOfServiceAgreed: tosUrl === me._tos , onlyReturnExisting: false , contact: contact }; if (options.externalAccount) { body.externalAccountBinding = me.RSA.signJws( options.externalAccount.secret , undefined , { alg: "HS256" , kid: options.externalAccount.id , url: me._directoryUrls.newAccount } , Buffer.from(JSON.stringify(jwk)) ); } var payload = JSON.stringify(body); var jws = me.RSA.signJws( options.accountKeypair , undefined , { nonce: me._nonce , alg: 'RS256' , url: me._directoryUrls.newAccount , jwk: jwk } , Buffer.from(payload) ); delete jws.header; if (me.debug) { console.debug('[acme-v2] accounts.create JSON body:'); } if (me.debug) { console.debug(jws); } me._nonce = null; return me._request({ method: 'POST' , url: me._directoryUrls.newAccount , headers: { 'Content-Type': 'application/jose+json' } , json: jws }).then(function (resp) { var account = resp.body; me._nonce = resp.toJSON().headers['replay-nonce']; var location = resp.toJSON().headers.location; // the account id url me._kid = location; if (me.debug) { console.debug('[DEBUG] new account location:'); } if (me.debug) { console.debug(location); } if (me.debug) { console.debug(resp.toJSON()); } /* { id: 5925245, key: { kty: 'RSA', n: 'tBr7m1hVaUNQjUeakznGidnrYyegVUQrsQjNrcipljI9Vxvxd0baHc3vvRZWFyFO5BlS7UDl-KHQdbdqb-MQzfP6T2sNXsOHARQ41pCGY5BYzIPRJF0nD48-CY717is-7BKISv8rf9yx5iSjvK1wZ3Ke3YIpxzK2fWRqccVxXQ92VYioxOfGObACgEUSvdoEttWV2B0Uv4Sdi6zZbk5eo2zALvyGb1P4fKVfQycGLXC41AyhHOAuTqzNCyIkiWEkbfh2lZNcYClP2epS0pHRFXYyjJN6-c8InfM3PISo4k6Qew65HZ-oqUow0tTIgNwuen9q5O6Hc73GvU-2npGJVQ', e: 'AQAB' }, contact: [], initialIp: '198.199.82.211', createdAt: '2018-04-16T00:41:00.720584972Z', status: 'valid' } */ if (!account) { account = { _emptyResponse: true, key: {} }; } account.key.kid = me._kid; return account; }).then(resolve, reject); } if (me.debug) { console.debug('[acme-v2] agreeToTerms'); } if (1 === options.agreeToTerms.length) { // newer promise API return options.agreeToTerms(me._tos).then(agree, reject); } else if (2 === options.agreeToTerms.length) { // backwards compat cb API return options.agreeToTerms(me._tos, function (err, tosUrl) { if (!err) { agree(tosUrl); return; } reject(err); }); } else { reject(new Error('agreeToTerms has incorrect function signature.' + ' Should be fn(tos) { return Promise; }')); } }); }); }; /* POST /acme/new-order HTTP/1.1 Host: example.com Content-Type: application/jose+json { "protected": base64url({ "alg": "ES256", "kid": "https://example.com/acme/acct/1", "nonce": "5XJ1L3lEkMG7tR6pA00clA", "url": "https://example.com/acme/new-order" }), "payload": base64url({ "identifiers": [{"type:"dns","value":"example.com"}], "notBefore": "2016-01-01T00:00:00Z", "notAfter": "2016-01-08T00:00:00Z" }), "signature": "H6ZXtGjTZyUnPeKn...wEA4TklBdh3e454g" } */ ACME._getChallenges = function (me, options, auth) { if (me.debug) { console.debug('\n[DEBUG] getChallenges\n'); } return me._request({ method: 'GET', url: auth, json: true }).then(function (resp) { return resp.body; }); }; ACME._wait = function wait(ms) { return new Promise(function (resolve) { setTimeout(resolve, (ms || 1100)); }); }; // https://tools.ietf.org/html/draft-ietf-acme-acme-10#section-7.5.1 ACME._postChallenge = function (me, options, identifier, ch) { var count = 0; var thumbprint = me.RSA.thumbprint(options.accountKeypair); var keyAuthorization = ch.token + '.' + thumbprint; // keyAuthorization = token || '.' || base64url(JWK_Thumbprint(accountKey)) // /.well-known/acme-challenge/:token var auth = { identifier: identifier , hostname: identifier.value , type: ch.type , token: ch.token , thumbprint: thumbprint , keyAuthorization: keyAuthorization , dnsAuthorization: me.RSA.utils.toWebsafeBase64( require('crypto').createHash('sha256').update(keyAuthorization).digest('base64') ) }; return new Promise(function (resolve, reject) { /* POST /acme/authz/1234 HTTP/1.1 Host: example.com Content-Type: application/jose+json { "protected": base64url({ "alg": "ES256", "kid": "https://example.com/acme/acct/1", "nonce": "xWCM9lGbIyCgue8di6ueWQ", "url": "https://example.com/acme/authz/1234" }), "payload": base64url({ "status": "deactivated" }), "signature": "srX9Ji7Le9bjszhu...WTFdtujObzMtZcx4" } */ function deactivate() { var jws = me.RSA.signJws( options.accountKeypair , undefined , { nonce: me._nonce, alg: 'RS256', url: ch.url, kid: me._kid } , Buffer.from(JSON.stringify({ "status": "deactivated" })) ); me._nonce = null; return me._request({ method: 'POST' , url: ch.url , headers: { 'Content-Type': 'application/jose+json' } , json: jws }).then(function (resp) { if (me.debug) { console.debug('[acme-v2.js] deactivate:'); } if (me.debug) { console.debug(resp.headers); } if (me.debug) { console.debug(resp.body); } if (me.debug) { console.debug(); } me._nonce = resp.toJSON().headers['replay-nonce']; if (me.debug) { console.debug('deactivate challenge: resp.body:'); } if (me.debug) { console.debug(resp.body); } return ACME._wait(10 * 1000); }); } function pollStatus() { if (count >= 5) { return Promise.reject(new Error("[acme-v2] stuck in bad pending/processing state")); } count += 1; if (me.debug) { console.debug('\n[DEBUG] statusChallenge\n'); } return me._request({ method: 'GET', url: ch.url, json: true }).then(function (resp) { if ('processing' === resp.body.status) { if (me.debug) { console.debug('poll: again'); } return ACME._wait(1 * 1000).then(pollStatus); } // This state should never occur if ('pending' === resp.body.status) { if (count >= 4) { return ACME._wait(1 * 1000).then(deactivate).then(testChallenge); } if (me.debug) { console.debug('poll: again'); } return ACME._wait(1 * 1000).then(testChallenge); } if ('valid' === resp.body.status) { if (me.debug) { console.debug('poll: valid'); } try { if (1 === options.removeChallenge.length) { options.removeChallenge(auth).then(function () {}, function () {}); } else if (2 === options.removeChallenge.length) { options.removeChallenge(auth, function (err) { return err; }); } else { options.removeChallenge(identifier.value, ch.token, function () {}); } } catch(e) {} return resp.body; } if (!resp.body.status) { console.error("[acme-v2] (E_STATE_EMPTY) empty challenge state:"); } else if ('invalid' === resp.body.status) { console.error("[acme-v2] (E_STATE_INVALID) invalid challenge state:"); } else { console.error("[acme-v2] (E_STATE_UKN) unkown challenge state:"); } return Promise.reject(new Error("[acme-v2] challenge state error")); }); } function respondToChallenge() { var jws = me.RSA.signJws( options.accountKeypair , undefined , { nonce: me._nonce, alg: 'RS256', url: ch.url, kid: me._kid } , Buffer.from(JSON.stringify({ })) ); me._nonce = null; return me._request({ method: 'POST' , url: ch.url , headers: { 'Content-Type': 'application/jose+json' } , json: jws }).then(function (resp) { if (me.debug) { console.debug('[acme-v2.js] challenge accepted!'); } if (me.debug) { console.debug(resp.headers); } if (me.debug) { console.debug(resp.body); } if (me.debug) { console.debug(); } me._nonce = resp.toJSON().headers['replay-nonce']; if (me.debug) { console.debug('respond to challenge: resp.body:'); } if (me.debug) { console.debug(resp.body); } return ACME._wait(1 * 1000).then(pollStatus); }); } function testChallenge() { // TODO put check dns / http checks here? // http-01: GET https://example.org/.well-known/acme-challenge/{{token}} => {{keyAuth}} // dns-01: TXT _acme-challenge.example.org. => "{{urlSafeBase64(sha256(keyAuth))}}" if (me.debug) {console.debug('\n[DEBUG] postChallenge\n'); } //if (me.debug) console.debug('\n[DEBUG] stop to fix things\n'); return; return ACME._wait(1 * 1000).then(function () { if (!me.skipChallengeTest) { return ACME.challengeTests[ch.type](me, auth); } }).then(respondToChallenge); } try { if (1 === options.setChallenge.length) { options.setChallenge(auth).then(testChallenge).then(resolve, reject); } else if (2 === options.setChallenge.length) { options.setChallenge(auth, function(err) { if(err) { reject(err); } else { testChallenge().then(resolve, reject); } }); } else { options.setChallenge(identifier.value, ch.token, keyAuthorization, function(err) { if(err) { reject(err); } else { testChallenge().then(resolve, reject); } }); } } catch(e) { reject(e); } }); }; ACME._finalizeOrder = function (me, options, validatedDomains) { if (me.debug) { console.debug('finalizeOrder:'); } var csr = me.RSA.generateCsrWeb64(options.domainKeypair, validatedDomains); var body = { csr: csr }; var payload = JSON.stringify(body); function pollCert() { var jws = me.RSA.signJws( options.accountKeypair , undefined , { nonce: me._nonce, alg: 'RS256', url: me._finalize, kid: me._kid } , Buffer.from(payload) ); if (me.debug) { console.debug('finalize:', me._finalize); } me._nonce = null; return me._request({ method: 'POST' , url: me._finalize , headers: { 'Content-Type': 'application/jose+json' } , json: jws }).then(function (resp) { // https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-7.1.3 // Possible values are: "pending" => ("invalid" || "ready") => "processing" => "valid" me._nonce = resp.toJSON().headers['replay-nonce']; if (me.debug) { console.debug('order finalized: resp.body:'); } if (me.debug) { console.debug(resp.body); } if ('valid' === resp.body.status) { me._expires = resp.body.expires; me._certificate = resp.body.certificate; return resp.body; // return order } if ('processing' === resp.body.status) { return ACME._wait().then(pollCert); } if (me.debug) { console.debug("Error: bad status:\n" + JSON.stringify(resp.body, null, 2)); } if ('pending' === resp.body.status) { return Promise.reject(new Error( "Did not finalize order: status 'pending'." + " Best guess: You have not accepted at least one challenge for each domain." + "\n\n" + JSON.stringify(resp.body, null, 2) )); } if ('invalid' === resp.body.status) { return Promise.reject(new Error( "Did not finalize order: status 'invalid'." + " Best guess: One or more of the domain challenges could not be verified" + " (or the order was canceled)." + "\n\n" + JSON.stringify(resp.body, null, 2) )); } if ('ready' === resp.body.status) { return Promise.reject(new Error( "Did not finalize order: status 'ready'." + " Hmmm... this state shouldn't be possible here. That was the last state." + " This one should at least be 'processing'." + "\n\n" + JSON.stringify(resp.body, null, 2) + "\n\n" + "Please open an issue at https://git.coolaj86.com/coolaj86/acme-v2.js" )); } return Promise.reject(new Error( "Didn't finalize order: Unhandled status '" + resp.body.status + "'." + " This is not one of the known statuses...\n\n" + JSON.stringify(resp.body, null, 2) + "\n\n" + "Please open an issue at https://git.coolaj86.com/coolaj86/acme-v2.js" )); }); } return pollCert(); }; ACME._getCertificate = function (me, options) { if (me.debug) { console.debug('[acme-v2] DEBUG get cert 1'); } if (!options.challengeTypes) { if (!options.challengeType) { return Promise.reject(new Error("challenge type must be specified")); } options.challengeTypes = [ options.challengeType ]; } if (!me._kid) { if (options.accountKid) { me._kid = options.accountKid; } else { //return Promise.reject(new Error("must include KeyID")); return ACME._registerAccount(me, options).then(function () { return ACME._getCertificate(me, options); }); } } if (me.debug) { console.debug('[acme-v2] certificates.create'); } return ACME._getNonce(me).then(function () { var body = { identifiers: options.domains.map(function (hostname) { return { type: "dns" , value: hostname }; }) //, "notBefore": "2016-01-01T00:00:00Z" //, "notAfter": "2016-01-08T00:00:00Z" }; var payload = JSON.stringify(body); var jws = me.RSA.signJws( options.accountKeypair , undefined , { nonce: me._nonce, alg: 'RS256', url: me._directoryUrls.newOrder, kid: me._kid } , Buffer.from(payload) ); if (me.debug) { console.debug('\n[DEBUG] newOrder\n'); } me._nonce = null; return me._request({ method: 'POST' , url: me._directoryUrls.newOrder , headers: { 'Content-Type': 'application/jose+json' } , json: jws }).then(function (resp) { me._nonce = resp.toJSON().headers['replay-nonce']; var location = resp.toJSON().headers.location; var auths; if (me.debug) { console.debug(location); } // the account id url if (me.debug) { console.debug(resp.toJSON()); } me._authorizations = resp.body.authorizations; me._order = location; me._finalize = resp.body.finalize; //if (me.debug) console.debug('[DEBUG] finalize:', me._finalize); return; if (!me._authorizations) { console.error("[acme-v2.js] authorizations were not fetched:"); console.error(resp.body); return Promise.reject(new Error("authorizations were not fetched")); } if (me.debug) { console.debug("[acme-v2] POST newOrder has authorizations"); } //return resp.body; auths = me._authorizations.slice(0); function next() { var authUrl = auths.shift(); if (!authUrl) { return; } return ACME._getChallenges(me, options, authUrl).then(function (results) { // var domain = options.domains[i]; // results.identifier.value var chType = options.challengeTypes.filter(function (chType) { return results.challenges.some(function (ch) { return ch.type === chType; }); })[0]; var challenge = results.challenges.filter(function (ch) { if (chType === ch.type) { return ch; } })[0]; if (!challenge) { return Promise.reject(new Error("Server didn't offer any challenge we can handle.")); } return ACME._postChallenge(me, options, results.identifier, challenge); }).then(function () { return next(); }); } return next().then(function () { if (me.debug) { console.debug("[getCertificate] next.then"); } var validatedDomains = body.identifiers.map(function (ident) { return ident.value; }); return ACME._finalizeOrder(me, options, validatedDomains); }).then(function (order) { if (me.debug) { console.debug('acme-v2: order was finalized'); } return me._request({ method: 'GET', url: me._certificate, json: true }).then(function (resp) { if (me.debug) { console.debug('acme-v2: csr submitted and cert received:'); } // https://github.com/certbot/certbot/issues/5721 var certsarr = ACME.splitPemChain(ACME.formatPemChain((resp.body||''))); var certs = { expires: order.expires , identifiers: order.identifiers //, authorizations: order.authorizations , cert: certsarr.shift() //, privkey: privkeyPem , chain: certsarr.join('\n') }; if (me.debug) { console.debug(certs); } return certs; }); }); }); }); }; ACME.create = function create(me) { if (!me) { me = {}; } // me.debug = true; me.challengePrefixes = ACME.challengePrefixes; me.RSA = me.RSA || require('rsa-compat').RSA; me.request = me.request || require('@coolaj86/urequest'); me._dig = function (query) { // TODO use digd.js return new Promise(function (resolve, reject) { var dns = require('dns'); dns.resolveTxt(query.name, function (err, records) { if (err) { reject(err); return; } resolve({ answer: records.map(function (rr) { return { data: rr }; }) }); }); }); }; me.promisify = me.promisify || require('util').promisify /*node v8+*/ || require('bluebird').promisify /*node v6*/; if ('function' !== typeof me.getUserAgentString) { me.pkg = me.pkg || require('./package.json'); me.os = me.os || require('os'); me.process = me.process || require('process'); me.userAgent = ACME._getUserAgentString(me); } 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; };