| /* |
| * 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.ranger.authentication.unix.jaas; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| |
| import javax.security.auth.callback.Callback; |
| import javax.security.auth.callback.CallbackHandler; |
| import javax.security.auth.callback.NameCallback; |
| import javax.security.auth.callback.PasswordCallback; |
| import javax.security.auth.callback.UnsupportedCallbackException; |
| |
| public class ConsolePromptCallbackHandler implements CallbackHandler { |
| |
| |
| @Override |
| public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException { |
| |
| BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); |
| |
| for(Callback cb : callbacks) { |
| if (cb instanceof NameCallback) { |
| NameCallback nc = (NameCallback)cb; |
| System.out.print(nc.getPrompt()); |
| System.out.flush(); |
| String line = null; |
| |
| while (line == null) { |
| line = reader.readLine(); |
| } |
| nc.setName(line); |
| } |
| else if (cb instanceof PasswordCallback) { |
| PasswordCallback pc = (PasswordCallback)cb; |
| System.out.print(pc.getPrompt()); |
| System.out.flush(); |
| |
| String line = null; |
| while (line == null) { |
| line = reader.readLine(); |
| } |
| pc.setPassword(line.toCharArray()); |
| } |
| else { |
| System.out.println("Unknown callbacl [" + cb.getClass().getName() + "]"); |
| } |
| } |
| } |
| |
| } |