/*

 * Copyright (c) 2006, 2015, 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.Map;

import javax.security.auth.Subject;

import javax.security.auth.callback.Callback;

import javax.security.auth.callback.CallbackHandler;

import javax.security.auth.callback.NameCallback;

import javax.security.auth.callback.PasswordCallback;

import javax.security.auth.login.LoginException;

import javax.security.auth.spi.LoginModule;

public final class TestSampleLoginModule implements LoginModule {

    private Subject subject;

    private CallbackHandler callbackHandler;

    private Map<String, ?> sharedState;

    private Map<String, ?> options;

    public TestSampleLoginModule() {

    }

    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;

    }

  /*

   * Authenticate the user by comparing the values of the java properties

   * (username and password) against the values of the credentials.

   * */

    public boolean login() throws LoginException {

        String credentials_username = null;

        String credentials_password = null;

        String authenticated_username = System.getProperty("susername");

        String authenticated_password = System.getProperty("spassword");

        System.out.println("TestSampleLoginModule::login: Start");

        // First retreive the credentials {username, password} from

        // the callback handler

        Callback[] callbacks = new Callback[2];

        callbacks[0] = new NameCallback("username");

        callbacks[1] = new PasswordCallback("password", false);

        try {

            callbackHandler.handle(callbacks);

            credentials_username = ((NameCallback)callbacks[0]).getName();

            credentials_password = new String(((PasswordCallback)callbacks[1]).

                    getPassword());

        } catch (Exception e) {

            throw new LoginException(e.toString());

        }

        System.out.println("TestSampleLoginModule::login: credentials username = " +

                credentials_username);

        System.out.println("TestSampleLoginModule::login: credentials password = " +

                credentials_password);

        System.out.println("TestSampleLoginModule::login: authenticated username = " +

                authenticated_username);

        System.out.println("TestSampleLoginModule::login: authenticated password = " +

                authenticated_password);

        if (credentials_username.equals(authenticated_username) &&

                credentials_password.equals(authenticated_password)) {

            System.out.println("TestSampleLoginModule::login: " +

                    "Authentication should succeed");

            return true;

        } else {

            System.out.println("TestSampleLoginModule::login: " +

                    "Authentication should reject");

            throw new LoginException("TestSampleLoginModule throws EXCEPTION");

        }

    }

    public boolean commit() throws LoginException {

        return true;

    }

    public boolean abort() throws LoginException {

        return true;

    }

    public boolean logout() throws LoginException {

        return true;

    }

}