/* | |
* 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.tools.ant.input; | |
import org.apache.tools.ant.BuildException; | |
import org.apache.tools.ant.util.ReflectUtil; | |
/** | |
* Prompts and requests input. May loop until a valid input has | |
* been entered. Doesn't echo input (requires Java6). If Java6 is not | |
* available, fallsback to the DefaultHandler (insecure). | |
* @since Ant 1.7.1 | |
*/ | |
public class SecureInputHandler extends DefaultInputHandler { | |
/** | |
* Default no-args constructor | |
*/ | |
public SecureInputHandler() { | |
} | |
/** | |
* Handle the input | |
* @param request the request to handle | |
* @throws BuildException if not possible to read from console | |
*/ | |
public void handleInput(InputRequest request) throws BuildException { | |
String prompt = getPrompt(request); | |
try { | |
Class system = Class.forName("java.lang.System"); | |
Object console = ReflectUtil.invokeStatic(system, "console"); | |
do { | |
char[] input = (char[]) ReflectUtil.invoke( | |
console, "readPassword", String.class, prompt, | |
Object[].class, (Object[]) null); | |
request.setInput(new String(input)); | |
/* for security zero char array after retrieving value */ | |
java.util.Arrays.fill(input, ' '); | |
} while (!request.isInputValid()); | |
} catch (Exception e) { | |
/* Java6 not present use default handler */ | |
super.handleInput(request); | |
} | |
} | |
} |