v1.7.1: don't self-poison dns cache, more consistency
This commit is contained in:
parent
b1182457cd
commit
e5e7377712
194
node.js
194
node.js
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@ -47,10 +47,9 @@ ACME.challengeTests = {
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}
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, 'dns-01': function (me, auth) {
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// remove leading *. on wildcard domains
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var hostname = ACME.challengePrefixes['dns-01'] + '.' + auth.hostname.replace(/^\*\./, '');
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return me._dig({
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type: 'TXT'
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, name: hostname
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, name: auth.dnsHost
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}).then(function (ans) {
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var err;
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@ -62,7 +61,7 @@ ACME.challengeTests = {
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err = new Error(
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"Error: Failed DNS-01 Pre-Flight Dry Run.\n"
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+ "dig TXT '" + hostname + "' does not return '" + auth.dnsAuthorization + "'\n"
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+ "dig TXT '" + auth.dnsHost + "' 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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@ -164,7 +163,7 @@ ACME._registerAccount = function (me, options) {
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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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, alg: (me._alg || 'RS256')
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, url: me._directoryUrls.newAccount
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, jwk: jwk
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}
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@ -296,48 +295,58 @@ ACME._testChallenges = function (me, options) {
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return Promise.resolve();
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}
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var CHECK_DELAY = 0;
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return Promise.all(options.domains.map(function (identifierValue) {
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// TODO we really only need one to pass, not all to pass
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var results = ACME._testChallengeOptions();
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if (identifierValue.inludes("*")) {
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results = results.filter(function (ch) { return ch._wildcard; });
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var challenges = ACME._testChallengeOptions();
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if (identifierValue.includes("*")) {
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challenges = challenges.filter(function (ch) { return ch._wildcard; });
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}
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var challenge = ACME._chooseChallenge(options, results);
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var challenge = ACME._chooseChallenge(options, { challenges: challenges });
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if (!challenge) {
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// For example, wildcards require dns-01 and, if we don't have that, we have to bail
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var enabled = options.challengeTypes.join(', ') || 'none';
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var suitable = results.map(function (r) { return r.type; }).join(', ') || 'none';
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var suitable = challenges.map(function (r) { return r.type; }).join(', ') || 'none';
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return Promise.reject(new Error(
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"None of the challenge types that you've enabled ( " + enabled + " )"
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+ " are suitable for validating the domain you've selected (" + identifierValue + ")."
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+ " You must enable one of ( " + suitable + " )."
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));
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}
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return Promise.resolve().then(function () {
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var thumbprint = me.RSA.thumbprint(options.accountKeypair);
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var keyAuthorization = challenge.token + '.' + thumbprint;
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var auth = {
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identifier: { type: "dns", value: identifierValue }
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, hostname: identifierValue
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, type: challenge.type
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, token: challenge.token
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, thumbprint: thumbprint
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, keyAuthorization: keyAuthorization
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, dnsAuthorization: ACME._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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if ('dns-01' === challenge.type) {
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// nameservers take a second to propagate
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CHECK_DELAY = 5 * 1000;
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}
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return Promise.resolve().then(function () {
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var results = {
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identifier: {
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type: "dns"
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, value: identifierValue.replace(/^\*\./, '')
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, wildcard: identifierValue.includes('*.') || undefined
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}
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, challenges: [ challenge ]
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, expires: new Date(Date.now() + (60 * 1000)).toISOString()
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};
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var dryrun = true;
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var auth = ACME._challengeToAuth(me, options, results, challenge, dryrun);
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return ACME._setChallenge(me, options, auth).then(function () {
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return ACME.challengeTests[challenge.type](me, auth);
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return auth;
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});
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});
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})).then(function (auths) {
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return ACME._wait(CHECK_DELAY).then(function () {
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return Promise.all(auths.map(function (auth) {
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return ACME.challengeTests[auth.type](me, auth);
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}));
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});
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});
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};
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ACME._chooseChallenge = function(options, results) {
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// For each of the challenge types that we support
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var challenge;
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options.challengesTypes.some(function (chType) {
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options.challengeTypes.some(function (chType) {
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// And for each of the challenge types that are allowed
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return results.challenges.some(function (ch) {
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// Check to see if there are any matches
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@ -350,30 +359,57 @@ ACME._chooseChallenge = function(options, results) {
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return challenge;
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};
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ACME._challengeToAuth = function (me, options, request, challenge, dryrun) {
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// we don't poison the dns cache with our dummy request
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var dnsPrefix = ACME.challengePrefixes['dns-01'];
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if (dryrun) {
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dnsPrefix = dnsPrefix.replace('acme-challenge', 'greenlock-dryrun-' + Math.random().toString().slice(2,6));
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}
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var auth = {};
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// straight copy from the new order response
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// { identifier, status, expires, challenges, wildcard }
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Object.keys(request).forEach(function (key) {
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auth[key] = request[key];
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});
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// copy from the challenge we've chosen
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// { type, status, url, token }
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// (note the duplicate status overwrites the one above, but they should be the same)
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Object.keys(challenge).forEach(function (key) {
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auth[key] = challenge[key];
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});
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// batteries-included helpers
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auth.hostname = request.identifier.value;
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auth.thumbprint = me.RSA.thumbprint(options.accountKeypair);
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// keyAuthorization = token || '.' || base64url(JWK_Thumbprint(accountKey))
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auth.keyAuthorization = challenge.token + '.' + auth.thumbprint;
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auth.dnsHost = dnsPrefix + '.' + auth.hostname.replace('*.', '');
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auth.dnsAuthorization = ACME._toWebsafeBase64(
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require('crypto').createHash('sha256').update(auth.keyAuthorization).digest('base64')
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);
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// because I'm not 100% clear if the wildcard identifier does or doesn't have the leading *. in all cases
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auth.altname = ACME._untame(request.identifier.value, request.wildcard);
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return auth;
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};
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ACME._untame = function (name, wild) {
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if (wild) { name = '*.' + name.replace('*.', ''); }
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return name;
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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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ACME._postChallenge = function (me, options, auth) {
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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: ACME._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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var altname = ACME._untame(auth.identifier.value, auth.wildcard);
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/*
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POST /acme/authz/1234 HTTP/1.1
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@ -397,13 +433,13 @@ ACME._postChallenge = function (me, options, identifier, ch) {
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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: (me._alg || 'RS256'), url: ch.url, kid: me._kid }
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, { nonce: me._nonce, alg: (me._alg || 'RS256'), url: auth.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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, url: auth.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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@ -422,14 +458,14 @@ ACME._postChallenge = function (me, options, identifier, ch) {
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function pollStatus() {
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if (count >= MAX_POLL) {
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return Promise.reject(new Error(
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"[acme-v2] stuck in bad pending/processing state for '" + identifier.value + "'"
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"[acme-v2] stuck in bad pending/processing state for '" + altname + "'"
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));
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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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return me._request({ method: 'GET', url: auth.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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@ -453,7 +489,12 @@ ACME._postChallenge = function (me, options, identifier, ch) {
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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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if (!ACME._removeChallengeWarn) {
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console.warn("Please update to acme-v2 removeChallenge(options) <Promise> or removeChallenge(options, cb).");
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console.warn("The API has been changed for compatibility with all ACME / Let's Encrypt challenge types.");
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ACME._removeChallengeWarn = true;
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}
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options.removeChallenge(auth.request.identifier, auth.token, function () {});
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}
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} catch(e) {}
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return resp.body;
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@ -461,13 +502,13 @@ ACME._postChallenge = function (me, options, identifier, ch) {
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var errmsg;
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if (!resp.body.status) {
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errmsg = "[acme-v2] (E_STATE_EMPTY) empty challenge state for '" + identifier.value + "':";
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errmsg = "[acme-v2] (E_STATE_EMPTY) empty challenge state for '" + altname + "':";
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}
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else if ('invalid' === resp.body.status) {
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errmsg = "[acme-v2] (E_STATE_INVALID) challenge state for '" + identifier.value + "': '" + resp.body.status + "'";
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errmsg = "[acme-v2] (E_STATE_INVALID) challenge state for '" + altname + "': '" + resp.body.status + "'";
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}
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else {
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errmsg = "[acme-v2] (E_STATE_UKN) challenge state for '" + identifier.value + "': '" + resp.body.status + "'";
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errmsg = "[acme-v2] (E_STATE_UKN) challenge state for '" + altname + "': '" + resp.body.status + "'";
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}
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return Promise.reject(new Error(errmsg));
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@ -478,13 +519,13 @@ ACME._postChallenge = function (me, options, identifier, ch) {
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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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, { nonce: me._nonce, alg: (me._alg || 'RS256'), url: auth.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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, url: auth.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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@ -519,6 +560,11 @@ ACME._setChallenge = function (me, options, auth) {
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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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if (!ACME._setChallengeWarn) {
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console.warn("Please update to acme-v2 setChallenge(options) <Promise> or setChallenge(options, cb).");
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console.warn("The API has been changed for compatibility with all ACME / Let's Encrypt challenge types.");
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ACME._setChallengeWarn = true;
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}
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options.setChallenge(auth.identifier.value, auth.token, auth.keyAuthorization, challengeCb);
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}
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} catch(e) {
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@ -541,7 +587,7 @@ ACME._finalizeOrder = function (me, options, validatedDomains) {
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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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, { nonce: me._nonce, alg: (me._alg || 'RS256'), url: me._finalize, kid: me._kid }
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, Buffer.from(payload)
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);
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@ -642,14 +688,13 @@ ACME._getCertificate = function (me, options) {
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}
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// TODO check that all challengeTypes are represented in challenges
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if (!options.challengeTypes.length) {
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return Promise.reject(new Error("options.challengesTypes (string array) must be specified"
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return Promise.reject(new Error("options.challengeTypes (string array) must be specified"
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+ " (and in order of preferential priority)."));
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}
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if (!(options.domains && options.domains.length)) {
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return Promise.reject(new Error("options.domains must be a list of string domain names,"
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+ " with the first being the subject of the domain (or options.subject must specified)."));
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}
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if (!options.subject) { options.subject = options.domains[0]; }
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// It's just fine if there's no account, we'll go get the key id we need via the public key
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if (!me._kid) {
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@ -670,8 +715,15 @@ ACME._getCertificate = function (me, options) {
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if (me.debug) { console.debug('[acme-v2] certificates.create'); }
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return ACME._getNonce(me).then(function () {
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var body = {
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identifiers: options.domains.map(function (hostname) {
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return { type: "dns" , value: hostname };
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// raw wildcard syntax MUST be used here
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identifiers: options.domains.sort(function (a, b) {
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// the first in the list will be the subject of the certificate, I believe (and hope)
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if (!options.subject) { return 0; }
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if (options.subject === a) { return -1; }
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if (options.subject === b) { return 1; }
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return 0;
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}).map(function (hostname) {
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return { type: "dns", value: hostname };
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})
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//, "notBefore": "2016-01-01T00:00:00Z"
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//, "notAfter": "2016-01-08T00:00:00Z"
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@ -698,7 +750,8 @@ ACME._getCertificate = function (me, options) {
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}).then(function (resp) {
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me._nonce = resp.toJSON().headers['replay-nonce'];
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var location = resp.toJSON().headers.location;
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var auths;
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var setAuths;
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var auths = [];
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if (me.debug) { console.debug(location); } // the account id url
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if (me.debug) { console.debug(resp.toJSON()); }
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me._authorizations = resp.body.authorizations;
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@ -713,12 +766,10 @@ ACME._getCertificate = function (me, options) {
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));
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}
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if (me.debug) { console.debug("[acme-v2] POST newOrder has authorizations"); }
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setAuths = me._authorizations.slice(0);
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//return resp.body;
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auths = me._authorizations.slice(0);
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function next() {
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var authUrl = auths.shift();
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function setNext() {
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var authUrl = setAuths.shift();
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if (!authUrl) { return; }
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return ACME._getChallenges(me, options, authUrl).then(function (results) {
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@ -726,7 +777,7 @@ ACME._getCertificate = function (me, options) {
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// If it's already valid, we're golden it regardless
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if (results.challenges.some(function (ch) { return 'valid' === ch.status; })) {
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return;
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return setNext();
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}
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var challenge = ACME._chooseChallenge(options, results);
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@ -737,13 +788,22 @@ ACME._getCertificate = function (me, options) {
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));
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}
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return ACME._postChallenge(me, options, results.identifier, challenge);
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}).then(function () {
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return next();
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var auth = ACME._challengeToAuth(me, options, results, challenge);
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auths.push(auth);
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return ACME._setChallenge(me, options, auth).then(setNext);
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});
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}
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return next().then(function () {
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function challengeNext() {
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var auth = auths.shift();
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if (!auth) { return; }
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return ACME._postChallenge(me, options, auth).then(challengeNext);
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}
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// First we set every challenge
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// Then we ask for each challenge to be checked
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// Doing otherwise would potentially cause us to poison our own DNS cache with misses
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return setNext().then(challengeNext).then(function () {
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if (me.debug) { console.debug("[getCertificate] next.then"); }
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var validatedDomains = body.identifiers.map(function (ident) {
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return ident.value;
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@ -1,6 +1,6 @@
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{
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"name": "acme-v2",
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"version": "1.7.0",
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"version": "1.7.1",
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"description": "Free SSL. A framework for building Let's Encrypt v2 clients, and other ACME v2 (draft 11) clients. Successor to le-acme-core.js",
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"homepage": "https://git.coolaj86.com/coolaj86/acme-v2.js",
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"main": "node.js",
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