/*

 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package com.sun.security.auth.callback;

/* JAAS imports */

import javax.security.auth.callback.Callback;

import javax.security.auth.callback.CallbackHandler;

import javax.security.auth.callback.NameCallback;        // javadoc

import javax.security.auth.callback.PasswordCallback;    // javadoc

import javax.security.auth.callback.UnsupportedCallbackException;

/* Java imports */

import java.io.IOException;

import sun.security.util.ConsoleCallbackHandler;

/**

 * <p>

 * Prompts and reads from the command line for answers to authentication

 * questions.

 * This can be used by a JAAS application to instantiate a

 * CallbackHandler

 * @see javax.security.auth.callback

 */

@jdk.Exported

public class TextCallbackHandler implements CallbackHandler {

    private final CallbackHandler consoleHandler;

    /**

     * <p>Creates a callback handler that prompts and reads from the

     * command line for answers to authentication questions.

     * This can be used by JAAS applications to instantiate a

     * CallbackHandler.

     */

    public TextCallbackHandler() {

        this.consoleHandler = new ConsoleCallbackHandler();

    }

    /**

     * Handles the specified set of callbacks.

     *

     * @param callbacks the callbacks to handle

     * @throws IOException if an input or output error occurs.

     * @throws UnsupportedCallbackException if the callback is not an

     * instance of NameCallback or PasswordCallback

     */

    public void handle(Callback[] callbacks)

        throws IOException, UnsupportedCallbackException

    {

        // delegate to console handler

        consoleHandler.handle(callbacks);

    }

}