login/LoginContext/DefaultHandlerModule.java

/*
 * Copyright (c) 2000, 2004, 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.
 *
 * 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

import java.util.*;
import java.io.IOException;
import javax.security.auth.*;
import javax.security.auth.callback.*;
import javax.security.auth.login.*;
import javax.security.auth.spi.*;

public class DefaultHandlerModule implements LoginModule {

    // initial state
    private Subject subject;
    private CallbackHandler callbackHandler;
    private Map sharedState;
    private Map options;

    // username and password
    private String username;
    private char[] password;

    public void initialize(Subject subject, CallbackHandler callbackHandler,
                        Map<String,?> sharedState, Map<String,?> options) {

        this.subject = subject;
        this.callbackHandler = callbackHandler;
        this.sharedState = sharedState;
        this.options = options;
    }

    public boolean login() throws LoginException {

        // prompt for a username and password
        if (callbackHandler == null) {
            throw new LoginException("Error: no CallbackHandler available " +
                        "to garner authentication information from the user");
        } else {
            System.out.println("DefaultHandlerModule got CallbackHandler: " +
                        callbackHandler.toString());
        }

        return true;
    }

    public boolean commit() throws LoginException {
        return true;
    }

    public boolean abort() throws LoginException {
        return true;
    }

    public boolean logout() throws LoginException {
        return true;
    }
}