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/*
*
* 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.qpid.server.security.auth.sasl.plain;
import java.util.Arrays;
import javax.security.auth.callback.PasswordCallback;
/**
* Custom PasswordCallback for use during the PLAIN authentication process.
*
* To be used in combination with PrincipalDatabase implementations that
* can either set a plain text value in the parent callback, or use the
* setAuthenticated(bool) method after observing the incoming plain text.
*
* isAuthenticated() should then be used to determine the final result.
*
*/
public class PlainPasswordCallback extends PasswordCallback
{
private char[] _plainPassword;
private boolean _authenticated = false;
/**
* Constructs a new PlainPasswordCallback with the incoming plain text password.
*
* @throws NullPointerException if the incoming plain text is null
*/
public PlainPasswordCallback(String prompt, boolean echoOn, String plainPassword)
{
super(prompt, echoOn);
if(plainPassword == null)
{
throw new NullPointerException("Incoming plain text cannot be null");
}
_plainPassword = plainPassword.toCharArray();
}
public String getPlainPassword()
{
return new String(_plainPassword);
}
public void setAuthenticated(boolean authenticated)
{
_authenticated = authenticated;
}
/**
* Method to determine if the incoming plain password is authenticated
*
* @return true if the stored password matches the incoming text, or setAuthenticated(true) has been called
*/
public boolean isAuthenticated()
{
char[] storedPassword = getPassword();
return Arrays.equals(_plainPassword, storedPassword) || _authenticated;
}
}
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