| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| package org.apache.hadoop.gateway.shell; |
| |
| import java.io.Console; |
| |
| /** |
| * |
| */ |
| public abstract class AbstractJavaConsoleCredentialCollector extends AbstractCredentialCollector { |
| |
| public AbstractJavaConsoleCredentialCollector() { |
| super(); |
| } |
| |
| protected String collectClearCredential(String prompt) { |
| Console c = System.console(); |
| if (c == null) { |
| System.err.println("No console."); |
| System.exit(1); |
| } |
| |
| String username = c.readLine(prompt); |
| value = username; |
| |
| return value; |
| } |
| |
| protected String collectHiddenCredential(String prompt) { |
| char[] response = null; |
| Console c = System.console(); |
| if (c == null) { |
| System.err.println("No console."); |
| System.exit(1); |
| } |
| |
| response = c.readPassword(prompt); |
| value = new String(response); |
| |
| return value; |
| } |
| |
| @Override |
| public boolean validate() { |
| boolean rc = true; |
| if (value == null || value.isEmpty()) { |
| rc = false; |
| } |
| return rc; |
| } |
| } |