Jetty example source code file (JDBCLoginModule.java)

This example Jetty source code file (JDBCLoginModule.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Jetty tags/keywords

callbackhandler, classnotfoundexception, connecting, connecting, connection, illegalaccessexception, illegalstateexception, illegalstateexception, instantiationexception, jdbc, jdbcloginmodule, map, map, sql, string, string, util

The Jetty JDBCLoginModule.java source code

// ========================================================================
// $Id: JDBCLoginModule.java 478 2006-04-23 22:00:17Z gregw $
// Copyright 2002-2004 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed 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.mortbay.jetty.plus.jaas.spi;

import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Map;

import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;

import org.mortbay.log.Log;
import org.mortbay.util.Loader;



/* ---------------------------------------------------- */
/** JDBCLoginModule
 * <p>JAAS LoginModule to retrieve user information from
 *  a database and authenticate the user.
 *
 * <p>
Notes
 * <p>This version uses plain old JDBC connections NOT
 * Datasources.
 *
 * <p>
Usage
 * <pre>
 */
/*
 * </pre>
 *
 * @see 
 * @version 1.0 Tue Apr 15 2003
 * @author Jan Bartel (janb)
 */
public class JDBCLoginModule extends AbstractDatabaseLoginModule
{
    private String dbDriver;
    private String dbUrl;
    private String dbUserName;
    private String dbPassword;

    

  

    
    /** 
     * Get a connection from the DriverManager
     * @see org.mortbay.jetty.plus.jaas.spi.AbstractDatabaseLoginModule#getConnection()
     * @return
     * @throws Exception
     */
    public Connection getConnection ()
    throws Exception
    {
        if (!((dbDriver != null)
                &&
                (dbUrl != null)))
            throw new IllegalStateException ("Database connection information not configured");
        
        if(Log.isDebugEnabled())Log.debug("Connecting using dbDriver="+dbDriver+"+ dbUserName="+dbUserName+", dbPassword="+dbUrl);
        
        return DriverManager.getConnection (dbUrl,
                dbUserName,
                dbPassword);
    }
   
   
    
    /* ------------------------------------------------ */
    /** Init LoginModule.
     * Called once by JAAS after new instance created.
     * @param subject 
     * @param callbackHandler 
     * @param sharedState 
     * @param options 
     */
    public void initialize(Subject subject,
                           CallbackHandler callbackHandler,
                           Map sharedState,
                           Map options)
    {
        try
        {
            super.initialize(subject, callbackHandler, sharedState, options);
            
            //get the jdbc  username/password, jdbc url out of the options
            dbDriver = (String)options.get("dbDriver");
            dbUrl = (String)options.get("dbUrl");
            dbUserName = (String)options.get("dbUserName");
            dbPassword = (String)options.get("dbPassword");

            if (dbUserName == null)
                dbUserName = "";

            if (dbPassword == null)
                dbPassword = "";
            
            if (dbDriver != null)
                Loader.loadClass(this.getClass(), dbDriver).newInstance();
        }
        catch (ClassNotFoundException e)
        {
            throw new IllegalStateException (e.toString());
        }
        catch (InstantiationException e)
        {
            throw new IllegalStateException (e.toString());
        }
        catch (IllegalAccessException e)
        {
            throw new IllegalStateException (e.toString());
        }
    }
}