430 lines
		
	
	
		
			16 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			430 lines
		
	
	
		
			16 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
'use strict';
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function _log(debug) {
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  if (debug) {
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    var args = Array.prototype.slice.call(arguments);
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    args.shift();
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    args.unshift("[greenlock/lib/core.js]");
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    console.log.apply(console, args);
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  }
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}
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module.exports.create = function (gl) {
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  var PromiseA = require('bluebird');
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  var utils = require('./utils');
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  var RSA = PromiseA.promisifyAll(require('rsa-compat').RSA);
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  var log = gl.log || _log; // allow custom log
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  var pendingRegistrations = {};
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  var core = {
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    //
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    // Helpers
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    //
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    getAcmeUrlsAsync: function (args) {
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      var now = Date.now();
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      // TODO check response header on request for cache time
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      if ((now - gl._ipc.acmeUrlsUpdatedAt) < 10 * 60 * 1000) {
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        return PromiseA.resolve(gl._ipc.acmeUrls);
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      }
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      return gl.acme.getAcmeUrlsAsync(args.server).then(function (data) {
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        gl._ipc.acmeUrlsUpdatedAt = Date.now();
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        gl._ipc.acmeUrls = data;
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        return gl._ipc.acmeUrls;
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      });
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    }
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    //
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    // The Main Enchilada
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    //
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    //
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    // Accounts
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    //
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  , accounts: {
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      // Accounts
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      registerAsync: function (args) {
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        var err;
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        var copy = utils.merge(args, gl);
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        var disagreeTos;
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        args = utils.tplCopy(copy);
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        disagreeTos = (!args.agreeTos && 'undefined' !== typeof args.agreeTos);
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        if (!args.email || disagreeTos || (parseInt(args.rsaKeySize, 10) < 2048)) {
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          err = new Error(
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            "In order to register an account both 'email' and 'agreeTos' must be present"
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              + " and 'rsaKeySize' must be 2048 or greater."
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          );
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          err.code = 'E_ARGS';
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          return PromiseA.reject(err);
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        }
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        return utils.testEmail(args.email).then(function () {
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          var keypairOpts = { public: true, pem: true };
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          var promise = gl.store.accounts.checkKeypairAsync(args).then(function (keypair) {
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            if (keypair) {
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              return RSA.import(keypair);
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            }
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            if (args.accountKeypair) {
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              return gl.store.accounts.setKeypairAsync(args, RSA.import(args.accountKeypair));
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            }
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            return RSA.generateKeypairAsync(args.rsaKeySize, 65537, keypairOpts).then(function (keypair) {
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              keypair.privateKeyPem = RSA.exportPrivatePem(keypair);
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              keypair.publicKeyPem = RSA.exportPublicPem(keypair);
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              keypair.privateKeyJwk = RSA.exportPrivateJwk(keypair);
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              return gl.store.accounts.setKeypairAsync(args, keypair);
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            });
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          });
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          return promise.then(function (keypair) {
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            // Note: the ACME urls are always fetched fresh on purpose
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            // TODO is this the right place for this?
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            return core.getAcmeUrlsAsync(args).then(function (urls) {
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              args._acmeUrls = urls;
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              return gl.acme.registerNewAccountAsync({
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                email: args.email
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              , newRegUrl: args._acmeUrls.newReg
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              , newAuthzUrl: args._acmeUrls.newAuthz
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              , agreeToTerms: function (tosUrl, agreeCb) {
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                  if (true === args.agreeTos || tosUrl === args.agreeTos || tosUrl === gl.agreeToTerms) {
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                    agreeCb(null, tosUrl);
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                    return;
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                  }
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                  // args.email = email;      // already there
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                  // args.domains = domains   // already there
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                  args.tosUrl = tosUrl;
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                  gl.agreeToTerms(args, agreeCb);
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                }
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              , accountKeypair: keypair
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              , debug: gl.debug || args.debug
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              }).then(function (receipt) {
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                var reg = {
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                  keypair: keypair
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                , receipt: receipt
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                , email: args.email
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                , newRegUrl: args._acmeUrls.newReg
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                , newAuthzUrl: args._acmeUrls.newAuthz
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                };
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                // TODO move templating of arguments to right here?
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                return gl.store.accounts.setAsync(args, reg).then(function (account) {
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                  // should now have account.id and account.accountId
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                  args.account = account;
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                  args.accountId = account.id;
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                  return account;
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                });
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              });
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            });
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          });
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        });
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      }
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      // Accounts
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    , getAsync: function (args) {
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        return core.accounts.checkAsync(args).then(function (account) {
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          if (account) {
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            return account;
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          } else {
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            return core.accounts.registerAsync(args);
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          }
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        });
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      }
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      // Accounts
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    , checkAsync: function (args) {
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        var requiredArgs = ['accountId', 'email', 'domains', 'domain'];
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        if (!requiredArgs.some(function (key) { return -1 !== Object.keys(args).indexOf(key); })) {
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          return PromiseA.reject(new Error(
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            "In order to register or retrieve an account one of '" + requiredArgs.join("', '") + "' must be present"
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          ));
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        }
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        var copy = utils.merge(args, gl);
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        args = utils.tplCopy(copy);
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        return gl.store.accounts.checkAsync(args).then(function (account) {
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          if (!account) {
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            return null;
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          }
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          args.account = account;
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          args.accountId = account.id;
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          return account;
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        });
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      }
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    }
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  , certificates: {
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      // Certificates
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      registerAsync: function (args) {
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        var err;
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        var challengeDefaults = gl['_challengeOpts_' + (args.challengeType || gl.challengeType)] || {};
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        var copy = utils.merge(args, challengeDefaults || {});
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        copy = utils.merge(copy, gl);
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        args = utils.tplCopy(copy);
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        if (!Array.isArray(args.domains)) {
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          return PromiseA.reject(new Error('args.domains should be an array of domains'));
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        }
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        if (!(args.domains.length && args.domains.every(utils.isValidDomain))) {
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          // NOTE: this library can't assume to handle the http loopback
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          // (or dns-01 validation may be used)
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          // so we do not check dns records or attempt a loopback here
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          err = new Error("invalid domain name(s): '" + args.domains + "'");
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          err.code = "INVALID_DOMAIN";
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          return PromiseA.reject(err);
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        }
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        // If a previous request to (re)register a certificate is already underway we need
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        // to return the same promise created before rather than registering things twice.
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        // I'm not 100% sure how to properly handle the case where someone registers domain
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        // lists with some but not all elements common, nor am I sure that's even a case that
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        // is allowed to happen anyway. But for now we act like the list is completely the
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        // same if any elements are the same.
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        var promise;
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        args.domains.some(function (name) {
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          if (pendingRegistrations.hasOwnProperty(name)) {
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            promise = pendingRegistrations[name];
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            return true;
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          }
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        });
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        if (promise) {
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          return promise;
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        }
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        promise = core.certificates._runRegistration(args);
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        // Now that the registration is actually underway we need to make sure any subsequent
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        // registration attempts return the same promise until it is completed (but not after
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        // it is completed).
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        args.domains.forEach(function (name) {
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          pendingRegistrations[name] = promise;
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        });
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        function clearPending() {
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          args.domains.forEach(function (name) {
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            delete pendingRegistrations[name];
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          });
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        }
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        promise.then(clearPending, clearPending);
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        return promise;
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      }
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    , _runRegistration: function (args) {
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        // TODO renewal cb
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        // accountId and or email
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        return core.accounts.getAsync(args).then(function (account) {
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          args.account = account;
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          var promise = gl.store.certificates.checkKeypairAsync(args).then(function (keypair) {
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            if (keypair) {
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              return RSA.import(keypair);
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            }
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            if (args.domainKeypair) {
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              return gl.store.certificates.setKeypairAsync(args, RSA.import(args.domainKeypair));
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            }
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            var keypairOpts = { public: true, pem: true };
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            return RSA.generateKeypairAsync(args.rsaKeySize, 65537, keypairOpts).then(function (keypair) {
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              keypair.privateKeyPem = RSA.exportPrivatePem(keypair);
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              keypair.publicKeyPem = RSA.exportPublicPem(keypair);
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              keypair.privateKeyJwk = RSA.exportPrivateJwk(keypair);
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              return gl.store.certificates.setKeypairAsync(args, keypair);
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            });
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          });
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          return promise.then(function (domainKeypair) {
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            args.domainKeypair = domainKeypair;
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            //args.registration = domainKey;
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            // Note: the ACME urls are always fetched fresh on purpose
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            // TODO is this the right place for this?
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            return core.getAcmeUrlsAsync(args).then(function (urls) {
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              args._acmeUrls = urls;
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              var certReq = {
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                debug: args.debug || gl.debug
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              , newAuthzUrl: args._acmeUrls.newAuthz
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              , newCertUrl: args._acmeUrls.newCert
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              , accountKeypair: RSA.import(account.keypair)
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              , domainKeypair: domainKeypair
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              , domains: args.domains
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              , challengeType: args.challengeType
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              };
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              //
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              // IMPORTANT
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              //
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              // setChallenge and removeChallenge are handed defaults
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              // instead of args because getChallenge does not have
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              // access to args
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              // (args is per-request, defaults is per instance)
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              //
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              // Each of these fires individually for each domain,
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              // even though the certificate on the whole may have many domains
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              //
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              certReq.setChallenge = function (domain, key, value, done) {
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                log(args.debug, "setChallenge called for '" + domain + "'");
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                var copy = utils.merge({ domains: [domain] }, args);
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                copy = utils.merge(copy, gl);
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                utils.tplCopy(copy);
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                // TODO need to save challengeType
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                gl.challenges[args.challengeType].set(copy, domain, key, value, done);
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              };
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              certReq.removeChallenge = function (domain, key, done) {
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                log(args.debug, "removeChallenge called for '" + domain + "'");
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                var copy = utils.merge({ domains: [domain] }, gl);
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                utils.tplCopy(copy);
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                gl.challenges[args.challengeType].remove(copy, domain, key, done);
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              };
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              log(args.debug, 'calling greenlock.acme.getCertificateAsync', certReq.domains);
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              return gl.acme.getCertificateAsync(certReq).then(utils.attachCertInfo);
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            });
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          }).then(function (results) {
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            // { cert, chain, privkey /*TODO, subject, altnames, issuedAt, expiresAt */ }
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            args.certs = results;
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            // args.pems is deprecated
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            args.pems = results;
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            return gl.store.certificates.setAsync(args).then(function () {
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              return results;
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            });
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          });
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        });
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      }
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      // Certificates
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    , renewAsync: function (args, certs) {
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        var renewableAt = core.certificates._getRenewableAt(args, certs);
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        var err;
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        //var halfLife = (certs.expiresAt - certs.issuedAt) / 2;
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        //var renewable = (Date.now() - certs.issuedAt) > halfLife;
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        log(args.debug, "(Renew) Expires At", new Date(certs.expiresAt).toISOString());
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        log(args.debug, "(Renew) Renewable At", new Date(renewableAt).toISOString());
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        if (!args.duplicate && Date.now() < renewableAt) {
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          err = new Error(
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              "[ERROR] Certificate issued at '"
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            + new Date(certs.issuedAt).toISOString() + "' and expires at '"
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            + new Date(certs.expiresAt).toISOString() + "'. Ignoring renewal attempt until '"
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            + new Date(renewableAt).toISOString() + "'. Set { duplicate: true } to force."
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          );
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          err.code = 'E_NOT_RENEWABLE';
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          return PromiseA.reject(err);
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        }
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        // Either the cert has entered its renewal period
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        // or we're forcing a refresh via 'dupliate: true'
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        log(args.debug, "Renewing!");
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        // TODO fetch email address / accountId (accountBydomain) if not present
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        // store.config.getAsync(args.domains).then(function (config) { /*...*/ });
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        if (!args.domains || (args.domains.length || 0) <= 2) {
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          // this is a renewal, therefore we should renewal ALL of the domains
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          // associated with this certificate, unless args.domains is a list larger
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          // than example.com,www.example.com
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          // TODO check www. prefix
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          args.domains = certs.altnames;
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          if (Array.isArray(certs.domains) && certs.domains.length) {
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            args.domains = certs.domains;
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          }
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        }
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        return core.certificates.registerAsync(args);
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      }
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      // Certificates
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    , _isRenewable: function (args, certs) {
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        var renewableAt = core.certificates._getRenewableAt(args, certs);
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        log(args.debug, "Check Expires At", new Date(certs.expiresAt).toISOString());
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        log(args.debug, "Check Renewable At", new Date(renewableAt).toISOString());
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        if (args.duplicate || Date.now() >= renewableAt) {
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          log(args.debug, "certificates are renewable");
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          return true;
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        }
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        return false;
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      }
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    , _getRenewableAt: function (args, certs) {
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        return certs.expiresAt - (args.renewWithin || gl.renewWithin);
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      }
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    , checkAsync: function (args) {
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        var copy = utils.merge(args, gl);
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        utils.tplCopy(copy);
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        // returns pems
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        return gl.store.certificates.checkAsync(copy).then(function (cert) {
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          if (cert) {
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            log(args.debug, 'checkAsync found existing certificates');
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            return utils.attachCertInfo(cert);
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          }
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          log(args.debug, 'checkAsync failed to find certificates');
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          return null;
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        });
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      }
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      // Certificates
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    , getAsync: function (args) {
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        var copy = utils.merge(args, gl);
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        args = utils.tplCopy(copy);
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        return core.certificates.checkAsync(args).then(function (certs) {
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          if (!certs) {
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            // There is no cert available
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            if (args.communityMember && !args._communityMemberAdded) {
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              try {
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                require('./community').add(args._communityPackage + ' reg', args.email, args.domains);
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              } catch(e) { /* ignore */ }
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              args._communityMemberAdded = true;
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            }
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            return core.certificates.registerAsync(args);
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          }
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          if (core.certificates._isRenewable(args, certs)) {
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            // it's time to renew the available cert
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            if (args.communityMember && !args._communityMemberAdded) {
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              try {
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                require('./community').add(args._communityPackage + ' renew', args.email, args.domains);
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              } catch(e) { /* ignore */ }
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              args._communityMemberAdded = true;
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            }
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            certs.renewing = core.certificates.renewAsync(args, certs);
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            if (args.waitForRenewal) {
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              return certs.renewing;
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            }
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          }
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          // return existing unexpired (although potentially stale) certificates when available
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          // there will be an additional .renewing property if the certs are being asynchronously renewed
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          return certs;
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        }).then(function (results) {
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          // returns pems
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          return results;
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        });
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      }
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    }
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  };
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  return core;
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};
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