722 lines
23 KiB
JavaScript
722 lines
23 KiB
JavaScript
// Copyright 2018 AJ ONeal. All rights reserved
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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.formatPemChain = function formatPemChain(str) {
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return str.trim().replace(/[\r\n]+/g, '\n').replace(/\-\n\-/g, '-\n\n-') + '\n';
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};
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ACME.splitPemChain = function splitPemChain(str) {
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return str.trim().split(/[\r\n]{2,}/g).map(function (str) {
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return str + '\n';
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});
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};
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ACME.challengePrefixes = {
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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.challengeTests = {
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'http-01': function (me, auth) {
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var url = 'http://' + auth.hostname + ACME.challengePrefixes['http-01'] + '/' + auth.token;
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return me._request({ url: url }).then(function (resp) {
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var err;
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// TODO limit the number of bytes that are allowed to be downloaded
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if (auth.keyAuthorization === resp.body.toString('utf8').trim()) {
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return true;
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}
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err = new Error(
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"Error: Failed HTTP-01 Dry Run.\n"
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+ "curl '" + url + "'\n"
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+ "Expected: '" + auth.keyAuthorization + "'\n"
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+ "Got: '" + resp.body + "'\n"
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+ "See https://git.coolaj86.com/coolaj86/acme-v2.js/issues/4"
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);
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err.code = 'E_FAIL_DRY_CHALLENGE';
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return Promise.reject(err);
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});
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}
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, 'dns-01': function (me, auth) {
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var hostname = ACME.challengePrefixes['dns-01'] + '.' + auth.hostname;
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return me._dig({
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type: 'TXT'
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, name: hostname
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}).then(function (ans) {
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var err;
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if (ans.answer.some(function (txt) {
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return auth.dnsAuthorization === txt.data[0];
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})) {
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return true;
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}
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err = new Error(
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"Error: Failed DNS-01 Dry Run.\n"
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+ "dig TXT '" + hostname + "' does not return '" + auth.dnsAuthorization + "'\n"
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+ "See https://git.coolaj86.com/coolaj86/acme-v2.js/issues/4"
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);
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err.code = 'E_FAIL_DRY_CHALLENGE';
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return Promise.reject(err);
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});
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}
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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.debug('[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 contact;
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if (options.contact) {
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contact = options.contact.slice(0);
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} else if (options.email) {
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contact = [ 'mailto:' + options.email ];
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}
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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: contact
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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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, Buffer.from(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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, Buffer.from(payload)
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);
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delete jws.header;
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if (me.debug) { console.debug('[acme-v2] accounts.create JSON body:'); }
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if (me.debug) { console.debug(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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var account = resp.body;
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if (2 !== Math.floor(resp.statusCode / 100)) {
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throw new Error('account error: ' + JSON.stringify(body));
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}
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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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// the account id url
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me._kid = location;
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if (me.debug) { console.debug('[DEBUG] new account location:'); }
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if (me.debug) { console.debug(location); }
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if (me.debug) { console.debug(resp.toJSON()); }
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/*
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{
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contact: ["mailto:jon@example.com"],
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orders: "https://some-url",
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status: 'valid'
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}
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*/
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if (!account) { account = { _emptyResponse: true, key: {} }; }
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// https://git.coolaj86.com/coolaj86/acme-v2.js/issues/8
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if (!account.key) { account.key = {}; }
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account.key.kid = me._kid;
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return account;
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}).then(resolve, reject);
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}
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if (me.debug) { console.debug('[acme-v2] agreeToTerms'); }
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if (1 === options.agreeToTerms.length) {
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// newer promise API
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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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// backwards compat cb API
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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.debug('\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 RETRY_INTERVAL = me.retryInterval || 1000;
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var DEAUTH_INTERVAL = me.deauthWait || 10 * 1000;
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var MAX_POLL = me.retryPoll || 8;
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var MAX_PEND = me.retryPending || 4;
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var count = 0;
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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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var auth = {
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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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return new Promise(function (resolve, reject) {
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/*
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POST /acme/authz/1234 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": "xWCM9lGbIyCgue8di6ueWQ",
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"url": "https://example.com/acme/authz/1234"
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}),
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"payload": base64url({
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"status": "deactivated"
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}),
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"signature": "srX9Ji7Le9bjszhu...WTFdtujObzMtZcx4"
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}
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*/
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function deactivate() {
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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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, Buffer.from(JSON.stringify({ "status": "deactivated" }))
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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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if (me.debug) { console.debug('[acme-v2.js] deactivate:'); }
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if (me.debug) { console.debug(resp.headers); }
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if (me.debug) { console.debug(resp.body); }
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if (me.debug) { console.debug(); }
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me._nonce = resp.toJSON().headers['replay-nonce'];
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if (me.debug) { console.debug('deactivate challenge: resp.body:'); }
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if (me.debug) { console.debug(resp.body); }
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return ACME._wait(DEAUTH_INTERVAL);
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});
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}
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function pollStatus() {
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if (count >= MAX_POLL) {
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return Promise.reject(new Error("[acme-v2] stuck in bad pending/processing state"));
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}
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count += 1;
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if (me.debug) { console.debug('\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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if ('processing' === resp.body.status) {
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if (me.debug) { console.debug('poll: again'); }
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return ACME._wait(RETRY_INTERVAL).then(pollStatus);
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}
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// This state should never occur
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if ('pending' === resp.body.status) {
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if (count >= MAX_PEND) {
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return ACME._wait(RETRY_INTERVAL).then(deactivate).then(testChallenge);
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}
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if (me.debug) { console.debug('poll: again'); }
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return ACME._wait(RETRY_INTERVAL).then(testChallenge);
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}
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if ('valid' === resp.body.status) {
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if (me.debug) { console.debug('poll: valid'); }
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try {
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if (1 === options.removeChallenge.length) {
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options.removeChallenge(auth).then(function () {}, function () {});
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} else if (2 === options.removeChallenge.length) {
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options.removeChallenge(auth, function (err) { return err; });
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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] (E_STATE_EMPTY) empty challenge state:");
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}
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else if ('invalid' === resp.body.status) {
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console.error("[acme-v2] (E_STATE_INVALID) challenge state: '" + resp.body.status + "'");
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}
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else {
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console.error("[acme-v2] (E_STATE_UKN) challenge state: '" + resp.body.status + "'");
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}
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return Promise.reject(new Error("[acme-v2] [error] unacceptable challenge state '" + resp.body.status + "'"));
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});
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}
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function respondToChallenge() {
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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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, Buffer.from(JSON.stringify({ }))
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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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if (me.debug) { console.debug('[acme-v2.js] challenge accepted!'); }
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if (me.debug) { console.debug(resp.headers); }
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if (me.debug) { console.debug(resp.body); }
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if (me.debug) { console.debug(); }
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me._nonce = resp.toJSON().headers['replay-nonce'];
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if (me.debug) { console.debug('respond to challenge: resp.body:'); }
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if (me.debug) { console.debug(resp.body); }
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return ACME._wait(RETRY_INTERVAL).then(pollStatus);
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});
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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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if (me.debug) {console.debug('\n[DEBUG] postChallenge\n'); }
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//if (me.debug) console.debug('\n[DEBUG] stop to fix things\n'); return;
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return ACME._wait(RETRY_INTERVAL).then(function () {
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if (!me.skipChallengeTest) {
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return ACME.challengeTests[ch.type](me, auth);
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}
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}).then(respondToChallenge);
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}
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try {
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if (1 === options.setChallenge.length) {
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options.setChallenge(auth).then(testChallenge).then(resolve, reject);
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} else if (2 === options.setChallenge.length) {
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options.setChallenge(auth, function (err) {
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if(err) {
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reject(err);
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} else {
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testChallenge().then(resolve, reject);
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}
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});
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} else {
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var challengeCb = function(err) {
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if(err) {
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reject(err);
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} else {
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testChallenge().then(resolve, reject);
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}
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};
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Object.keys(auth).forEach(function (key) {
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challengeCb[key] = auth[key];
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});
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options.setChallenge(identifier.value, ch.token, keyAuthorization, challengeCb);
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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.debug('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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, Buffer.from(payload)
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);
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if (me.debug) { console.debug('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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// https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-7.1.3
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// Possible values are: "pending" => ("invalid" || "ready") => "processing" => "valid"
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me._nonce = resp.toJSON().headers['replay-nonce'];
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if (me.debug) { console.debug('order finalized: resp.body:'); }
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if (me.debug) { console.debug(resp.body); }
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if ('valid' === resp.body.status) {
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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||'')));
|
|
// cert, chain, fullchain, privkey, /*TODO, subject, altnames, issuedAt, expiresAt */
|
|
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;
|
|
};
|