javax.security.auth.message.callback.PasswordValidationCallback.java Source code

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Here is the source code for javax.security.auth.message.callback.PasswordValidationCallback.java

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/*
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 *
 * Copyright (c) 1997-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
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 * file and include the License file at packager/legal/LICENSE.txt.
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 * GPL Classpath Exception:
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 *
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package javax.security.auth.message.callback;

import java.util.Arrays;
import javax.security.auth.Subject;
import javax.security.auth.callback.Callback;

/**
 * Callback for PasswordValidation. 
 * This callback may be used by an authentication module 
 * to employ the password validation facilities of its containing runtime.
 * This Callback would typically be called by a <code>ServerAuthModule</code>
 * during <code>validateRequest</code> processing.
 *
 */
public class PasswordValidationCallback implements Callback {

    private Subject subject;
    private String username;
    private char[] password;
    private boolean result = false;

    /**
     * Create a PasswordValidationCallback.
     *
     * @param subject The subject for authentication
     *
     * @param username The username to authenticate
     *
     * @param password tTe user's password, which may be null.
     */
    public PasswordValidationCallback(Subject subject, String username, char[] password) {
        this.subject = subject;
        this.username = username;
        if (password != null) {
            this.password = (char[]) password.clone();
        }
    }

    /**
     * Get the subject.
     *
     * @return The subject.
     */
    public Subject getSubject() {
        return subject;
    }

    /**
     * Get the username.
     *
     * @return The username.
     */
    public String getUsername() {
        return username;
    }

    /**
     * Get the password.
     *
     * <p> Note that this method returns a reference to the password.
     * If a clone of the array is created it is the caller's
     * responsibility to zero out the password information after
     * it is no longer needed.
     *
     * @return The password, which may be null.
     */
    public char[] getPassword() {
        return password;
    }

    /**
     * Clear the password.
     */
    public void clearPassword() {
        if (password != null) {
            Arrays.fill(password, ' ');
        }
    }

    /**
     * Set the authentication result.
     *
     * @param result True if authentication succeeded, false otherwise
     */
    public void setResult(boolean result) {
        this.result = result;
    }

    /**
     * Get the authentication result.
     *
     * @return True if authentication succeeded, false otherwise
     */
    public boolean getResult() {
        return result;
    }
}