acme.js-ARCHIVED/acme.js

1673 lines
41 KiB
JavaScript

// Copyright 2018-present AJ ONeal. All rights reserved
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
'use strict';
/* globals Promise */
require('@root/encoding/bytes');
var Enc = require('@root/encoding/base64');
var ACME = module.exports;
//var Keypairs = exports.Keypairs || {};
//var CSR = exports.CSR;
var sha2 = require('./lib/node/sha2.js');
var http = require('./lib/node/http.js');
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';
});
};
// http-01: GET https://example.org/.well-known/acme-challenge/{{token}} => {{keyAuth}}
// dns-01: TXT _acme-challenge.example.org. => "{{urlSafeBase64(sha256(keyAuth))}}"
ACME.challengePrefixes = {
'http-01': '/.well-known/acme-challenge',
'dns-01': '_acme-challenge'
};
ACME.challengeTests = {
'http-01': function(me, auth) {
var ch = auth.challenge;
return me.http01(ch).then(function(keyAuth) {
var err;
// TODO limit the number of bytes that are allowed to be downloaded
if (ch.keyAuthorization === (keyAuth || '').trim()) {
return true;
}
err = new Error(
'Error: Failed HTTP-01 Pre-Flight / Dry Run.\n' +
"curl '" +
ch.challengeUrl +
"'\n" +
"Expected: '" +
ch.keyAuthorization +
"'\n" +
"Got: '" +
keyAuth +
"'\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) {
// remove leading *. on wildcard domains
var ch = auth.challenge;
return me.dns01(ch).then(function(ans) {
var err;
if (
ans.answer.some(function(txt) {
return ch.dnsAuthorization === txt.data[0];
})
) {
return true;
}
err = new Error(
'Error: Failed DNS-01 Pre-Flight Dry Run.\n' +
"dig TXT '" +
ch.dnsHost +
"' does not return '" +
ch.dnsAuthorization +
"'\n" +
'See https://git.coolaj86.com/coolaj86/acme-v2.js/issues/4'
);
err.code = 'E_FAIL_DRY_CHALLENGE';
return Promise.reject(err);
});
}
};
ACME._directory = function(me) {
// GET-as-GET ok
return me.request({ method: 'GET', url: me.directoryUrl, json: true });
};
ACME._getNonce = function(me) {
// GET-as-GET, HEAD-as-HEAD ok
var nonce;
while (true) {
nonce = me._nonces.shift();
if (!nonce) {
break;
}
if (Date.now() - nonce.createdAt > 15 * 60 * 1000) {
nonce = null;
} else {
break;
}
}
if (nonce) {
return Promise.resolve(nonce.nonce);
}
return me
.request({ method: 'HEAD', url: me._directoryUrls.newNonce })
.then(function(resp) {
return resp.headers['replay-nonce'];
});
};
ACME._setNonce = function(me, nonce) {
me._nonces.unshift({ nonce: nonce, createdAt: Date.now() });
};
// 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 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;
}
return ACME._importKeypair(me, options.accountKeypair).then(
function(pair) {
var contact;
if (options.contact) {
contact = options.contact.slice(0);
} else if (options.subscriberEmail || options.email) {
contact = [
'mailto:' +
(options.subscriberEmail || options.email)
];
}
var accountRequest = {
termsOfServiceAgreed: tosUrl === me._tos,
onlyReturnExisting: false,
contact: contact
};
var pExt;
if (options.externalAccount) {
pExt = me.Keypairs.signJws({
// TODO is HMAC the standard, or is this arbitrary?
secret: options.externalAccount.secret,
protected: {
alg: options.externalAccount.alg || 'HS256',
kid: options.externalAccount.id,
url: me._directoryUrls.newAccount
},
payload: Enc.strToBuf(JSON.stringify(pair.public))
}).then(function(jws) {
accountRequest.externalAccountBinding = jws;
return accountRequest;
});
} else {
pExt = Promise.resolve(accountRequest);
}
return pExt.then(function(accountRequest) {
var payload = JSON.stringify(accountRequest);
return ACME._jwsRequest(me, {
options: options,
url: me._directoryUrls.newAccount,
protected: { kid: false, jwk: pair.public },
payload: Enc.strToBuf(payload)
})
.then(function(resp) {
var account = resp.body;
if (
resp.statusCode < 200 ||
resp.statusCode >= 300
) {
if ('string' !== typeof account) {
account = JSON.stringify(account);
}
throw new Error(
'account error: ' +
resp.statusCode +
' ' +
account +
'\n' +
JSON.stringify(accountRequest)
);
}
var location = resp.headers.location;
// the account id url
options._kid = location;
if (me.debug) {
console.debug(
'[DEBUG] new account location:'
);
}
if (me.debug) {
console.debug(location);
}
if (me.debug) {
console.debug(resp);
}
/*
{
contact: ["mailto:jon@example.com"],
orders: "https://some-url",
status: 'valid'
}
*/
if (!account) {
account = { _emptyResponse: true };
}
// https://git.coolaj86.com/coolaj86/acme-v2.js/issues/8
if (!account.key) {
account.key = {};
}
account.key.kid = options._kid;
return account;
})
.then(resolve, reject);
});
}
);
}
if (me.debug) {
console.debug('[acme-v2] agreeToTerms');
}
if (1 === options.agreeToTerms.length) {
// newer promise API
return Promise.resolve(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<tos>; }'
)
);
}
});
};
/*
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, authUrl) {
if (me.debug) {
console.debug('\n[DEBUG] getChallenges\n');
}
// TODO POST-as-GET
return ACME._jwsRequest(me, {
options: options,
protected: {},
payload: '',
url: authUrl
}).then(function(resp) {
return resp.body;
});
};
ACME._wait = function wait(ms) {
return new Promise(function(resolve) {
setTimeout(resolve, ms || 1100);
});
};
ACME._testChallengeOptions = function() {
var chToken = ACME._prnd(16);
return [
{
type: 'http-01',
status: 'pending',
url: 'https://acme-staging-v02.example.com/0',
token: 'test-' + chToken + '-0'
},
{
type: 'dns-01',
status: 'pending',
url: 'https://acme-staging-v02.example.com/1',
token: 'test-' + chToken + '-1',
_wildcard: true
},
{
type: 'tls-sni-01',
status: 'pending',
url: 'https://acme-staging-v02.example.com/2',
token: 'test-' + chToken + '-2'
},
{
type: 'tls-alpn-01',
status: 'pending',
url: 'https://acme-staging-v02.example.com/3',
token: 'test-' + chToken + '-3'
}
];
};
ACME._testChallenges = function(me, options) {
var CHECK_DELAY = 0;
// memoized so that it doesn't run until it's first called
var getThumbnail = function() {
var thumbPromise = ACME._importKeypair(me, options.accountKeypair).then(
function(pair) {
return me.Keypairs.thumbprint({
jwk: pair.public
});
}
);
getThumbnail = function() {
return thumbPromise;
};
return thumbPromise;
};
return Promise.all(
options.domains.map(function(identifierValue) {
// TODO we really only need one to pass, not all to pass
var challenges = ACME._testChallengeOptions();
if (identifierValue.includes('*')) {
challenges = challenges.filter(function(ch) {
return ch._wildcard;
});
}
var challenge = ACME._chooseChallenge(options, {
challenges: challenges
});
if (!challenge) {
// For example, wildcards require dns-01 and, if we don't have that, we have to bail
var enabled = options.challengeTypes.join(', ') || 'none';
var suitable =
challenges
.map(function(r) {
return r.type;
})
.join(', ') || 'none';
return Promise.reject(
new Error(
"None of the challenge types that you've enabled ( " +
enabled +
' )' +
" are suitable for validating the domain you've selected (" +
identifierValue +
').' +
' You must enable one of ( ' +
suitable +
' ).'
)
);
}
// TODO remove skipChallengeTest
if (me.skipDryRun || me.skipChallengeTest) {
return null;
}
if ('dns-01' === challenge.type) {
// Give the nameservers a moment to propagate
// TODO get this value from the plugin
CHECK_DELAY = 7 * 1000;
}
return getThumbnail().then(function(accountKeyThumb) {
var results = {
identifier: {
type: 'dns',
value: identifierValue.replace(/^\*\./, '')
},
challenges: [challenge],
expires: new Date(Date.now() + 60 * 1000).toISOString(),
wildcard: identifierValue.includes('*.') || undefined
};
// The dry-run comes first in the spirit of "fail fast"
// (and protecting against challenge failure rate limits)
var dryrun = true;
return ACME._challengeToAuth(
me,
options,
accountKeyThumb,
results,
challenge,
dryrun
).then(function(auth) {
if (!me._canUse[auth.type]) {
return;
}
return ACME._setChallenge(me, options, auth).then(
function() {
return auth;
}
);
});
});
})
).then(function(auths) {
auths = auths.filter(Boolean);
if (!auths.length) {
/*skip actual test*/ return;
}
return ACME._wait(CHECK_DELAY).then(function() {
return Promise.all(
auths.map(function(auth) {
return ACME.challengeTests[auth.type](me, auth)
.then(function(result) {
// not a blocker
ACME._removeChallenge(me, options, auth);
return result;
})
.catch(function(err) {
ACME._removeChallenge(me, options, auth);
throw err;
});
})
);
});
});
};
ACME._chooseChallenge = function(options, results) {
// For each of the challenge types that we support
var challenge;
options.challengeTypes.some(function(chType) {
// And for each of the challenge types that are allowed
return results.challenges.some(function(ch) {
// Check to see if there are any matches
if (ch.type === chType) {
challenge = ch;
return true;
}
});
});
return challenge;
};
ACME._challengeToAuth = function(
me,
options,
accountKeyThumb,
request,
challenge,
dryrun
) {
// we don't poison the dns cache with our dummy request
var dnsPrefix = ACME.challengePrefixes['dns-01'];
if (dryrun) {
dnsPrefix = dnsPrefix.replace(
'acme-challenge',
'greenlock-dryrun-' + ACME._prnd(4)
);
}
var auth = {};
// straight copy from the new order response
// { identifier, status, expires, challenges, wildcard }
Object.keys(request).forEach(function(key) {
auth[key] = request[key];
});
// copy from the challenge we've chosen
// { type, status, url, token }
// (note the duplicate status overwrites the one above, but they should be the same)
Object.keys(challenge).forEach(function(key) {
// don't confused devs with the id url
auth[key] = challenge[key];
});
var zone = pluckZone(options.zonenames || [], auth.identifier.value);
// batteries-included helpers
auth.hostname = auth.identifier.value;
// because I'm not 100% clear if the wildcard identifier does or doesn't have the leading *. in all cases
auth.altname = ACME._untame(auth.identifier.value, auth.wildcard);
// we must accept JWKs that we didn't generate and we can't guarantee
// that they properly set kid to thumbnail (especially since ACME doesn't do this)
// so we have to regenerate it every time we need it, which is quite often
auth.thumbprint = accountKeyThumb;
// keyAuthorization = token || '.' || base64url(JWK_Thumbprint(accountKey))
auth.keyAuthorization = challenge.token + '.' + auth.thumbprint;
// conflicts with ACME challenge id url is already in use, so we call this challengeUrl instead
// TODO auth.http01Url ?
auth.challengeUrl =
'http://' +
auth.identifier.value +
ACME.challengePrefixes['http-01'] +
'/' +
auth.token;
auth.dnsHost = dnsPrefix + '.' + auth.hostname.replace('*.', '');
// Always calculate dnsAuthorization because we
// may need to present to the user for confirmation / instruction
// _as part of_ the decision making process
return sha2
.sum(256, auth.keyAuthorization)
.then(function(hash) {
return Enc.bufToUrlBase64(new Uint8Array(hash));
})
.then(function(hash64) {
auth.dnsAuthorization = hash64;
if (zone) {
auth.dnsZone = zone;
auth.dnsPrefix = auth.dnsHost
.replace(newZoneRegExp(zone), '')
.replace(/\.$/, '');
}
// For backwards compat with the v2.7 plugins
auth.challenge = auth;
// TODO can we use just { challenge: auth }?
// auth.request = ;
// TODO get rid of no-challenge backwards compat challenge
return {
challenge: auth,
request: function() {
// TODO see https://git.rootprojects.org/root/acme.js/issues/###
console.warn(
"[warn] deprecated use of request on '" +
auth.type +
"' challenge object. Receive from challenger.init() instead."
);
me.request.apply(null, arguments);
}
};
});
};
ACME._untame = function(name, wild) {
if (wild) {
name = '*.' + name.replace('*.', '');
}
return name;
};
// https://tools.ietf.org/html/draft-ietf-acme-acme-10#section-7.5.1
ACME._postChallenge = function(me, options, auth) {
var RETRY_INTERVAL = me.retryInterval || 1000;
var DEAUTH_INTERVAL = me.deauthWait || 10 * 1000;
var MAX_POLL = me.retryPoll || 8;
var MAX_PEND = me.retryPending || 4;
var count = 0;
var ch = auth.challenge;
var altname = ACME._untame(ch.identifier.value, ch.wildcard);
/*
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() {
if (me.debug) {
console.debug('[acme-v2.js] deactivate:');
}
return ACME._jwsRequest(me, {
options: options,
url: ch.url,
protected: { kid: options._kid },
payload: Enc.strToBuf(JSON.stringify({ status: 'deactivated' }))
}).then(function(resp) {
if (me.debug) {
console.debug('deactivate challenge: resp.body:');
}
if (me.debug) {
console.debug(resp.body);
}
return ACME._wait(DEAUTH_INTERVAL);
});
}
function pollStatus() {
if (count >= MAX_POLL) {
return Promise.reject(
new Error(
"[acme-v2] stuck in bad pending/processing state for '" +
altname +
"'"
)
);
}
count += 1;
if (me.debug) {
console.debug('\n[DEBUG] statusChallenge\n');
}
// TODO POST-as-GET
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', ch.url);
}
return ACME._wait(RETRY_INTERVAL).then(pollStatus);
}
// This state should never occur
if ('pending' === resp.body.status) {
if (count >= MAX_PEND) {
return ACME._wait(RETRY_INTERVAL)
.then(deactivate)
.then(respondToChallenge);
}
if (me.debug) {
console.debug('poll: again', ch.url);
}
return ACME._wait(RETRY_INTERVAL).then(respondToChallenge);
}
// REMOVE DNS records as soon as the state is non-processing
try {
ACME._removeChallenge(me, options, auth);
} catch (e) {}
if ('valid' === resp.body.status) {
if (me.debug) {
console.debug('poll: valid');
}
return resp.body;
}
var errmsg;
if (!resp.body.status) {
errmsg =
"[acme-v2] (E_STATE_EMPTY) empty challenge state for '" +
altname +
"':";
} else if ('invalid' === resp.body.status) {
errmsg =
"[acme-v2] (E_STATE_INVALID) challenge state for '" +
altname +
"': '" +
//resp.body.status +
JSON.stringify(resp.body) +
"'";
} else {
errmsg =
"[acme-v2] (E_STATE_UKN) challenge state for '" +
altname +
"': '" +
resp.body.status +
"'";
}
return Promise.reject(new Error(errmsg));
});
}
function respondToChallenge() {
if (me.debug) {
console.debug('[acme-v2.js] responding to accept challenge:');
}
return ACME._jwsRequest(me, {
options: options,
url: ch.url,
protected: { kid: options._kid },
payload: Enc.strToBuf(JSON.stringify({}))
}).then(function(resp) {
if (me.debug) {
console.debug('respond to challenge: resp.body:');
}
if (me.debug) {
console.debug(resp.body);
}
return ACME._wait(RETRY_INTERVAL).then(pollStatus);
});
}
return respondToChallenge();
};
ACME._setChallenge = function(me, options, auth) {
var ch = auth.challenge;
return Promise.resolve().then(function() {
var challengers = options.challenges || {};
var challenger = challengers[ch.type] && challengers[ch.type].set;
if (!challenger) {
throw new Error(
"options.challenges did not have a valid entry for '" +
ch.type +
"'"
);
}
if (1 === challenger.length) {
return Promise.resolve(challenger(auth));
} else if (2 === challenger.length) {
return new Promise(function(resolve, reject) {
challenger(auth, function(err) {
if (err) {
reject(err);
} else {
resolve();
}
});
});
} else {
throw new Error(
"Bad function signature for '" + ch.type + "' challenge.set()"
);
}
});
};
ACME._finalizeOrder = function(me, options, validatedDomains) {
if (me.debug) {
console.debug('finalizeOrder:');
}
return ACME._generateCsrWeb64(me, options, validatedDomains).then(function(
csr
) {
var body = { csr: csr };
var payload = JSON.stringify(body);
function pollCert() {
if (me.debug) {
console.debug('[acme-v2.js] pollCert:');
}
return ACME._jwsRequest(me, {
options: options,
url: options._finalize,
protected: { kid: options._kid },
payload: Enc.strToBuf(payload)
}).then(function(resp) {
if (me.debug) {
console.debug('order finalized: resp.body:');
}
if (me.debug) {
console.debug(resp.body);
}
// https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-7.1.3
// Possible values are: "pending" => ("invalid" || "ready") => "processing" => "valid"
if ('valid' === resp.body.status) {
options._expires = resp.body.expires;
options._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' +
"Requested: '" +
options.domains.join(', ') +
"'\n" +
"Validated: '" +
validatedDomains.join(', ') +
"'\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' +
"Requested: '" +
options.domains.join(', ') +
"'\n" +
"Validated: '" +
validatedDomains.join(', ') +
"'\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" +
"Requested: '" +
options.domains.join(', ') +
"'\n" +
"Validated: '" +
validatedDomains.join(', ') +
"'\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' +
"Requested: '" +
options.domains.join(', ') +
"'\n" +
"Validated: '" +
validatedDomains.join(', ') +
"'\n" +
JSON.stringify(resp.body, null, 2) +
'\n\n' +
'Please open an issue at https://git.coolaj86.com/coolaj86/acme-v2.js'
)
);
});
}
return pollCert();
});
};
// _kid
// registerAccount
// postChallenge
// finalizeOrder
// getCertificate
ACME._getCertificate = function(me, options) {
if (me.debug) {
console.debug('[acme-v2] DEBUG get cert 1');
}
// Lot's of error checking to inform the user of mistakes
if (!(options.challengeTypes || []).length) {
options.challengeTypes = Object.keys(options.challenges || {});
}
if (!options.challengeTypes.length) {
options.challengeTypes = [options.challengeType].filter(Boolean);
}
if (options.challengeType) {
options.challengeTypes.sort(function(a, b) {
if (a === options.challengeType) {
return -1;
}
if (b === options.challengeType) {
return 1;
}
return 0;
});
if (options.challengeType !== options.challengeTypes[0]) {
return Promise.reject(
new Error(
"options.challengeType is '" +
options.challengeType +
"'," +
" which does not exist in the supplied types '" +
options.challengeTypes.join(',') +
"'"
)
);
}
}
// TODO check that all challengeTypes are represented in challenges
if (!options.challengeTypes.length) {
return Promise.reject(
new Error(
'options.challengeTypes (string array) must be specified' +
' (and in order of preferential priority).'
)
);
}
if (options.csr) {
// TODO validate csr signature
options._csr = me.CSR._info(options.csr);
options.domains = options._csr.altnames;
if (options._csr.subject !== options.domains[0]) {
return Promise.reject(
new Error(
'certificate subject (commonName) does not match first altname (SAN)'
)
);
}
}
if (!(options.domains && options.domains.length)) {
return Promise.reject(
new Error(
'options.domains must be a list of string domain names,' +
' with the first being the subject of the certificate (or options.subject must specified).'
)
);
}
// a cheap check to see if there are non-ascii characters in any of the domains
var nonAsciiDomains = options.domains.some(function(d) {
// IDN / unicode / utf-8 / punycode
return Enc.strToBin(d) !== d;
});
if (nonAsciiDomains) {
throw new Error(
"please use the 'punycode' module to convert unicode domain names to punycode"
);
}
// It's just fine if there's no account, we'll go get the key id we need via the existing key
options._kid =
options._kid ||
options.accountKid ||
(options.account &&
(options.account.kid ||
(options.account.key && options.account.key.kid)));
if (!options._kid) {
//return Promise.reject(new Error("must include KeyID"));
// This is an idempotent request. It'll return the same account for the same public key.
return ACME._registerAccount(me, options).then(function(account) {
options._kid = account.key.kid;
// start back from the top
return ACME._getCertificate(me, options);
});
}
// TODO Promise.all()?
Object.keys(options.challenges).forEach(function(key) {
var presenter = options.challenges[key];
if ('function' === typeof presenter.init && !presenter._initialized) {
presenter._initialized = true;
return ACME._depInit(me, presenter);
}
});
var promiseZones;
if (options.challenges['dns-01']) {
// a little bit of random to ensure that getZones()
// actually returns the zones and not the hosts as zones
var dnsHosts = options.domains.map(function(d) {
var rnd = parseInt(
Math.random()
.toString()
.slice(2),
10
)
.toString(16)
.slice(0, 4);
return rnd + '.' + d;
});
promiseZones = ACME._getZones(
me,
options.challenges['dns-01'],
dnsHosts
);
} else {
promiseZones = Promise.resolve([]);
}
return promiseZones
.then(function(zonenames) {
options.zonenames = zonenames;
// Do a little dry-run / self-test
return ACME._testChallenges(me, options);
})
.then(function() {
if (me.debug) {
console.debug('[acme-v2] certificates.create');
}
var certOrder = {
// raw wildcard syntax MUST be used here
identifiers: options.domains
.sort(function(a, b) {
// the first in the list will be the subject of the certificate, I believe (and hope)
if (!options.subject) {
return 0;
}
if (options.subject === a) {
return -1;
}
if (options.subject === b) {
return 1;
}
return 0;
})
.map(function(hostname) {
return {
type: 'dns',
value: hostname
};
})
//, "notBefore": "2016-01-01T00:00:00Z"
//, "notAfter": "2016-01-08T00:00:00Z"
};
var payload = JSON.stringify(certOrder);
if (me.debug) {
console.debug('\n[DEBUG] newOrder\n');
}
return ACME._jwsRequest(me, {
options: options,
url: me._directoryUrls.newOrder,
protected: { kid: options._kid },
payload: Enc.strToBuf(payload)
}).then(function(resp) {
var location = resp.headers.location;
var setAuths;
var validAuths = [];
var auths = [];
if (me.debug) {
console.debug('[ordered]', location);
} // the account id url
if (me.debug) {
console.debug(resp);
}
options._authorizations = resp.body.authorizations;
options._order = location;
options._finalize = resp.body.finalize;
//if (me.debug) console.debug('[DEBUG] finalize:', options._finalize); return;
if (!options._authorizations) {
return Promise.reject(
new Error(
"[acme-v2.js] authorizations were not fetched for '" +
options.domains.join() +
"':\n" +
JSON.stringify(resp.body)
)
);
}
if (me.debug) {
console.debug('[acme-v2] POST newOrder has authorizations');
}
setAuths = options._authorizations.slice(0);
var accountKeyThumb;
function setThumbnail() {
return ACME._importKeypair(me, options.accountKeypair).then(
function(pair) {
return me.Keypairs.thumbprint({
jwk: pair.public
}).then(function(_thumb) {
accountKeyThumb = _thumb;
});
}
);
}
function setNext() {
var authUrl = setAuths.shift();
if (!authUrl) {
return;
}
return ACME._getChallenges(me, options, authUrl).then(
function(results) {
// var domain = options.domains[i]; // results.identifier.value
// If it's already valid, we're golden it regardless
if (
results.challenges.some(function(ch) {
return 'valid' === ch.status;
})
) {
return setNext();
}
var challenge = ACME._chooseChallenge(
options,
results
);
if (!challenge) {
// For example, wildcards require dns-01 and, if we don't have that, we have to bail
return Promise.reject(
new Error(
"Server didn't offer any challenge we can handle for '" +
options.domains.join() +
"'."
)
);
}
return ACME._challengeToAuth(
me,
options,
accountKeyThumb,
results,
challenge,
false
).then(function(auth) {
auths.push(auth);
return ACME._setChallenge(
me,
options,
auth
).then(setNext);
});
}
);
}
function waitAll() {
// TODO take the max wait of all challenge plugins and wait that long, or 1000ms
var DELAY = me.setChallengeWait || 7000;
if (true || me.debug) {
console.debug(
'\n[DEBUG] waitChallengeDelay %s\n',
DELAY
);
}
return ACME._wait(DELAY);
}
function checkNext() {
var auth = auths.shift();
if (!auth) {
return;
}
var ch = auth.challenge;
if (!me._canUse[ch.type] || me.skipChallengeTest) {
// not so much "valid" as "not invalid"
// but in this case we can't confirm either way
validAuths.push(auth);
return checkNext();
}
return ACME.challengeTests[ch.type](me, auth)
.then(function() {
validAuths.push(auth);
})
.then(checkNext);
}
function presentNext() {
var auth = validAuths.shift();
if (!auth) {
return;
}
return ACME._postChallenge(me, options, auth).then(
presentNext
);
}
function finalizeOrder() {
if (me.debug) {
console.debug('[getCertificate] next.then');
}
var validatedDomains = certOrder.identifiers.map(function(
ident
) {
return ident.value;
});
return ACME._finalizeOrder(me, options, validatedDomains);
}
function retrieveCerts(order) {
if (me.debug) {
console.debug('acme-v2: order was finalized');
}
// TODO POST-as-GET
return me
.request({
method: 'GET',
url: options._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;
});
}
// First we set each and every challenge
// Then we ask for each challenge to be checked
// Doing otherwise would potentially cause us to poison our own DNS cache with misses
return setThumbnail()
.then(setNext)
.then(waitAll)
.then(checkNext)
.then(presentNext)
.then(finalizeOrder)
.then(retrieveCerts);
});
});
};
ACME._generateCsrWeb64 = function(me, options, validatedDomains) {
var csr;
if (options.csr) {
csr = options.csr;
// if der, convert to base64
if ('string' !== typeof csr) {
csr = Enc.bufToUrlBase64(csr);
}
// TODO PEM.parseBlock()
// nix PEM headers, if any
if ('-' === csr[0]) {
csr = csr
.split(/\n+/)
.slice(1, -1)
.join('');
}
csr = Enc.base64ToUrlBase64(csr.trim().replace(/\s+/g, ''));
return Promise.resolve(csr);
}
return ACME._importKeypair(me, options.serverKeypair).then(function(pair) {
return me.CSR.csr({
jwk: pair.private,
domains: validatedDomains,
encoding: 'der'
}).then(function(der) {
return Enc.bufToUrlBase64(der);
});
});
};
ACME.create = function create(me) {
if (!me) {
me = {};
}
// me.debug = true;
me.challengePrefixes = ACME.challengePrefixes;
me.Keypairs = me.Keypairs || require('@root/keypairs');
me.CSR = me.CSR || require('./csr.js');
me._nonces = [];
me._canUse = {};
if (!me._baseUrl) {
me._baseUrl = '';
}
//me.Keypairs = me.Keypairs || require('keypairs');
//me.request = me.request || require('@root/request');
if (!me.dns01) {
me.dns01 = function(ch) {
return ACME._dns01(me, ch);
};
}
// backwards compat
if (!me.dig) {
me.dig = me.dns01;
}
if (!me.http01) {
me.http01 = function(ch) {
return ACME._http01(me, ch);
};
}
if ('function' !== typeof me.request) {
me.request = ACME._defaultRequest;
}
me.init = function(opts) {
function fin(dir) {
me._directoryUrls = dir;
me._tos = dir.meta.termsOfService;
return dir;
}
if (opts && opts.meta && opts.termsOfService) {
return Promise.resolve(fin(opts));
}
if (!me.directoryUrl) {
me.directoryUrl = opts;
}
if ('string' !== typeof me.directoryUrl) {
throw new Error(
'you must supply either the ACME directory url as a string or an object of the ACME urls'
);
}
var p = Promise.resolve();
if (!me.skipChallengeTest) {
p = me
.request({ url: me._baseUrl + '/api/_acme_api_/' })
.then(function(resp) {
if (resp.body.success) {
me._canCheck['http-01'] = true;
me._canCheck['dns-01'] = true;
}
})
.catch(function() {
// ignore
});
}
return p.then(function() {
return ACME._directory(me).then(function(resp) {
return fin(resp.body);
});
});
};
me.accounts = {
create: function(options) {
return ACME._registerAccount(me, options);
}
};
me.certificates = {
create: function(options) {
return ACME._getCertificate(me, options);
}
};
return me;
};
// Handle nonce, signing, and request altogether
ACME._jwsRequest = function(me, bigopts) {
return ACME._getNonce(me).then(function(nonce) {
bigopts.protected.nonce = nonce;
bigopts.protected.url = bigopts.url;
// protected.alg: added by Keypairs.signJws
if (!bigopts.protected.jwk) {
// protected.kid must be overwritten due to ACME's interpretation of the spec
if (!bigopts.protected.kid) {
bigopts.protected.kid = bigopts.options._kid;
}
}
// this will shasum the thumbnail the 2nd time
return me.Keypairs.signJws({
jwk: bigopts.options.accountKeypair.privateKeyJwk,
protected: bigopts.protected,
payload: bigopts.payload
}).then(function(jws) {
if (me.debug) {
console.debug('[acme-v2] ' + bigopts.url + ':');
}
if (me.debug) {
console.debug(jws);
}
return ACME._request(me, { url: bigopts.url, json: jws });
});
});
};
// Handle some ACME-specific defaults
ACME._request = function(me, opts) {
if (!opts.headers) {
opts.headers = {};
}
if (opts.json && true !== opts.json) {
opts.headers['Content-Type'] = 'application/jose+json';
opts.body = JSON.stringify(opts.json);
if (!opts.method) {
opts.method = 'POST';
}
}
return me.request(opts).then(function(resp) {
resp = resp.toJSON();
if (resp.headers['replay-nonce']) {
ACME._setNonce(me, resp.headers['replay-nonce']);
}
return resp;
});
};
// A very generic, swappable request lib
ACME._defaultRequest = function(opts) {
// Note: normally we'd have to supply a User-Agent string, but not here in a browser
if (!opts.headers) {
opts.headers = {};
}
if (opts.json) {
opts.headers.Accept = 'application/json';
if (true !== opts.json) {
opts.body = JSON.stringify(opts.json);
}
}
if (!opts.method) {
opts.method = 'GET';
if (opts.body) {
opts.method = 'POST';
}
}
opts.cors = true;
return http.request(opts);
};
ACME._importKeypair = function(me, kp) {
var jwk = kp.privateKeyJwk;
var p;
if (jwk) {
// nix the browser jwk extras
jwk.key_ops = undefined;
jwk.ext = undefined;
p = Promise.resolve({
private: jwk,
public: me.Keypairs.neuter({ jwk: jwk })
});
} else {
p = me.Keypairs.import({ pem: kp.privateKeyPem });
}
return p.then(function(pair) {
kp.privateKeyJwk = pair.private;
kp.publicKeyJwk = pair.public;
if (pair.public.kid) {
pair = JSON.parse(JSON.stringify(pair));
delete pair.public.kid;
delete pair.private.kid;
}
return pair;
});
};
/*
TODO
Per-Order State Params
_kty
_alg
_finalize
_expires
_certificate
_order
_authorizations
*/
ACME._toWebsafeBase64 = function(b64) {
return b64
.replace(/\+/g, '-')
.replace(/\//g, '_')
.replace(/=/g, '');
};
// In v8 this is crypto random, but we're just using it for pseudorandom
ACME._prnd = function(n) {
var rnd = '';
while (rnd.length / 2 < n) {
var num = Math.random()
.toString()
.substr(2);
if (num.length % 2) {
num = '0' + num;
}
var pairs = num.match(/(..?)/g);
rnd += pairs.map(ACME._toHex).join('');
}
return rnd.substr(0, n * 2);
};
ACME._toHex = function(pair) {
return parseInt(pair, 10).toString(16);
};
ACME._dns01 = function(me, ch) {
return new me.request({
url: me._baseUrl + '/api/dns/' + ch.dnsHost + '?type=TXT'
}).then(function(resp) {
var err;
if (!resp.body || !Array.isArray(resp.body.answer)) {
err = new Error('failed to get DNS response');
console.error(err);
throw err;
}
if (!resp.body.answer.length) {
err = new Error('failed to get DNS answer record in response');
console.error(err);
throw err;
}
return {
answer: resp.body.answer.map(function(ans) {
return { data: ans.data, ttl: ans.ttl };
})
};
});
};
ACME._http01 = function(me, ch) {
var url = encodeURIComponent(ch.challengeUrl);
return new me.request({
url: me._baseUrl + '/api/http?url=' + url
}).then(function(resp) {
return resp.body;
});
};
ACME._removeChallenge = function(me, options, auth) {
var challengers = options.challenges || {};
var ch = auth.challenge;
var removeChallenge = challengers[ch.type] && challengers[ch.type].remove;
if (!removeChallenge) {
throw new Error('challenge plugin is missing remove()');
}
if (1 === removeChallenge.length) {
return Promise.resolve(removeChallenge(auth)).then(
function() {},
function(e) {
console.error('Error during remove challenge:');
console.error(e);
}
);
} else if (2 === removeChallenge.length) {
return new Promise(function(resolve) {
removeChallenge(auth, function(err) {
resolve();
if (err) {
console.error('Error during remove challenge:');
console.error(err);
}
return err;
});
});
} else {
throw new Error(
"Bad function signature for '" + auth.type + "' challenge.remove()"
);
}
};
ACME._depInit = function(me, presenter) {
if ('function' !== typeof presenter.init) {
return Promise.resolve(null);
}
return ACME._wrapCb(
me,
presenter,
'init',
{ type: '*', request: me.request },
'null'
);
};
ACME._getZones = function(me, presenter, dnsHosts) {
if ('function' !== typeof presenter.zones) {
presenter.zones = function() {
return Promise.resolve([]);
};
}
var challenge = {
type: 'dns-01',
dnsHosts: dnsHosts,
request: me.request
};
return ACME._wrapCb(
me,
presenter,
'zones',
{ challenge: challenge },
'an array of zone names'
);
};
ACME._wrapCb = function(me, options, _name, args, _desc) {
return new Promise(function(resolve, reject) {
if (options[_name].length <= 1) {
return Promise.resolve(options[_name](args))
.then(resolve)
.catch(reject);
} else if (2 === options[_name].length) {
options[_name](args, function(err, results) {
if (err) {
reject(err);
} else {
resolve(results);
}
});
} else {
throw new Error(
'options.' + _name + ' should accept opts and Promise ' + _desc
);
}
});
};
function newZoneRegExp(zonename) {
// (^|\.)example\.com$
// which matches:
// foo.example.com
// example.com
// but not:
// fooexample.com
return new RegExp('(^|\\.)' + zonename.replace(/\./g, '\\.') + '$');
}
function pluckZone(zonenames, dnsHost) {
return zonenames
.filter(function(zonename) {
// the only character that needs to be escaped for regex
// and is allowed in a domain name is '.'
return newZoneRegExp(zonename).test(dnsHost);
})
.sort(function(a, b) {
// longest match first
return b.length - a.length;
})[0];
}