Node JS version

node_modules/cassandra-driver/lib/auth/base-dse-authenticator.js

@@ -0,0 +1,76 @@
+/*
+ * Copyright DataStax, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+'use strict';
+const util = require('util');
+const { Authenticator } = require('./provider');
+
+const dseAuthenticatorName = 'com.datastax.bdp.cassandra.auth.DseAuthenticator';
+
+/**
+ * Base class for Authenticator implementations that want to make use of
+ * the authentication scheme negotiation in the DseAuthenticator
+ * @param {String} authenticatorName
+ * @extends Authenticator
+ * @constructor
+ * @ignore
+ */
+function BaseDseAuthenticator(authenticatorName) {
+  this.authenticatorName = authenticatorName;
+}
+
+util.inherits(BaseDseAuthenticator, Authenticator);
+
+/**
+ * Return a Buffer containing the required SASL mechanism.
+ * @abstract
+ * @returns {Buffer}
+ */
+BaseDseAuthenticator.prototype.getMechanism = function () {
+  throw new Error('Not implemented');
+};
+
+/**
+ * Return a byte array containing the expected successful server challenge.
+ * @abstract
+ * @returns {Buffer}
+ */
+BaseDseAuthenticator.prototype.getInitialServerChallenge = function () {
+  throw new Error('Not implemented');
+};
+
+/**
+ * @param {Function} callback
+ * @override
+ */
+BaseDseAuthenticator.prototype.initialResponse = function (callback) {
+  if (!this._isDseAuthenticator()) {
+    //fallback
+    return this.evaluateChallenge(this.getInitialServerChallenge(), callback);
+  }
+  //send the mechanism as a first auth message
+  callback(null, this.getMechanism());
+};
+
+/**
+ * Determines if the name of the authenticator matches DSE 5+
+ * @protected
+ * @ignore
+ */
+BaseDseAuthenticator.prototype._isDseAuthenticator = function () {
+  return this.authenticatorName === dseAuthenticatorName;
+};
+
+module.exports = BaseDseAuthenticator;