646 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			646 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| /*!
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|  * acme-v2.js
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|  * Copyright(c) 2018 AJ ONeal <aj@ppl.family> https://ppl.family
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|  * Apache-2.0 OR MIT (and hence also MPL 2.0)
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|  */
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| 'use strict';
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| /* globals Promise */
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| 
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| var ACME = module.exports.ACME = {};
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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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| 
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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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| 
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|       err = new Error("self check does not pass");
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|       err.code = 'E_RETRY';
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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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|     return me._dig({
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|       type: 'TXT'
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|     , name: ACME.challengePrefixes['dns-01'] + '.' + auth.hostname
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|     }).then(function (ans) {
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|       var err;
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| 
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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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| 
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|       err = new Error("self check does not pass");
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|       err.code = 'E_RETRY';
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|       return Promise.reject(err);
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|     });
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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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| 
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|   var userAgent = [];
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| 
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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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| 
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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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| 
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|   return ACME._getNonce(me).then(function () {
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|     return new Promise(function (resolve, reject) {
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| 
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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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| 
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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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|           , new Buffer(JSON.stringify(jwk))
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|           );
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|         }
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|         var payload = JSON.stringify(body);
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|         var jws = me.RSA.signJws(
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|           options.accountKeypair
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|         , undefined
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|         , { nonce: me._nonce
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|           , alg: 'RS256'
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|           , url: me._directoryUrls.newAccount
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|           , jwk: jwk
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|           }
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|         , new Buffer(payload)
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|         );
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| 
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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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| 
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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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|           {
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|             id: 5925245,
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|             key:
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|              { kty: 'RSA',
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|                n: 'tBr7m1hVaUNQjUeakznGidnrYyegVUQrsQjNrcipljI9Vxvxd0baHc3vvRZWFyFO5BlS7UDl-KHQdbdqb-MQzfP6T2sNXsOHARQ41pCGY5BYzIPRJF0nD48-CY717is-7BKISv8rf9yx5iSjvK1wZ3Ke3YIpxzK2fWRqccVxXQ92VYioxOfGObACgEUSvdoEttWV2B0Uv4Sdi6zZbk5eo2zALvyGb1P4fKVfQycGLXC41AyhHOAuTqzNCyIkiWEkbfh2lZNcYClP2epS0pHRFXYyjJN6-c8InfM3PISo4k6Qew65HZ-oqUow0tTIgNwuen9q5O6Hc73GvU-2npGJVQ',
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|                e: 'AQAB' },
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|             contact: [],
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|             initialIp: '198.199.82.211',
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|             createdAt: '2018-04-16T00:41:00.720584972Z',
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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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|           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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| 
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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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|  {
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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 count = 0;
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| 
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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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| 
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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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|      {
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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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|       , new Buffer(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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| 
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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(10 * 1000);
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|       });
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|     }
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| 
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|     function pollStatus() {
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|       if (count >= 5) {
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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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| 
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|       count += 1;
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| 
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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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| 
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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(1 * 1000).then(pollStatus);
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|         }
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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 >= 4) {
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|             return ACME._wait(1 * 1000).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(1 * 1000).then(testChallenge);
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|         }
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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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| 
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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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| 
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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) invalid challenge state:");
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|         }
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|         else {
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|           console.error("[acme-v2] (E_STATE_UKN) unkown challenge state:");
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|         }
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| 
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|         return Promise.reject(new Error("[acme-v2] challenge state error"));
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|       });
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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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|       , new Buffer(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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| 
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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(1 * 1000).then(pollStatus).then(resolve, reject);
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|       });
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|     }
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| 
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|     function failChallenge(err) {
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|       if (err) { reject(err); return; }
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|       return testChallenge();
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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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| 
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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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| 
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|       return ACME._wait(1 * 1000).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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| 
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|     try {
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|       if (1 === options.setChallenge.length) {
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|         options.setChallenge(auth).then(testChallenge, reject);
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|       } else if (2 === options.setChallenge.length) {
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|         options.setChallenge(auth, failChallenge);
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|       } else {
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|         options.setChallenge(identifier.value, ch.token, keyAuthorization, failChallenge);
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|       }
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|     } catch(e) {
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|       reject(e);
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|     }
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|   });
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| };
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| ACME._finalizeOrder = function (me, options, validatedDomains) {
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|   if (me.debug) console.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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| 
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|   function pollCert() {
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|     var jws = me.RSA.signJws(
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|       options.accountKeypair
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|     , undefined
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|     , { nonce: me._nonce, alg: 'RS256', url: me._finalize, kid: me._kid }
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|     , new Buffer(payload)
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|     );
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| 
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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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|       me._nonce = resp.toJSON().headers['replay-nonce'];
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| 
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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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| 
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|       if ('processing' === resp.body.status) {
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|         return ACME._wait().then(pollCert);
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|       }
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| 
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|       if ('valid' === resp.body.status) {
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|         me._expires = resp.body.expires;
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|         me._certificate = resp.body.certificate;
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| 
 | |
|         return resp.body;
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|       }
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| 
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|       if ('invalid' === resp.body.status) {
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|         console.error('cannot finalize: badness');
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|         return;
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|       }
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| 
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|       console.error('(x) cannot finalize: badness');
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|       return;
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|     });
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|   }
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| 
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|   return pollCert();
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| };
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| ACME._getCertificate = function (me, options) {
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|   if (me.debug) console.debug('[acme-v2] DEBUG get cert 1');
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| 
 | |
|   if (!options.challengeTypes) {
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|     if (!options.challengeType) {
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|       return Promise.reject(new Error("challenge type must be specified"));
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|     }
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|     options.challengeTypes = [ options.challengeType ];
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|   }
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| 
 | |
|   if (!me._kid) {
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|     if (options.accountKid) {
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|       me._kid = options.accountKid;
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|     } else {
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|       //return Promise.reject(new Error("must include KeyID"));
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|       return ACME._registerAccount(me, options).then(function () {
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|         return ACME._getCertificate(me, options);
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|       });
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|     }
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|   }
 | |
| 
 | |
|   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 }
 | |
|     , new Buffer(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("47 &#&#&#&#&#&#&&##&#&#&#&#&#&#&#&");
 | |
| 
 | |
|       //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("37 &#&#&#&#&#&#&&##&#&#&#&#&#&#&#&");
 | |
|         var validatedDomains = body.identifiers.map(function (ident) {
 | |
|           return ident.value;
 | |
|         });
 | |
| 
 | |
|         return ACME._finalizeOrder(me, options, validatedDomains);
 | |
|       }).then(function () {
 | |
|         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:');
 | |
|           if (me.debug) console.debug(resp.body);
 | |
|           return resp.body;
 | |
|         });
 | |
|       });
 | |
|     });
 | |
|   });
 | |
| };
 | |
| 
 | |
| 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('request');
 | |
|   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;
 | |
| };
 |