home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

ActiveMQ example source code file (JaasAuthenticationBroker.java)

This example ActiveMQ source code file (JaasAuthenticationBroker.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 - ActiveMQ tags/keywords

copyonwritearraylist, exception, exception, jaasauthenticationbroker, jaassecuritycontext, jasscredentialcallbackhandler, logincontext, logincontext, security, securitycontext, securitycontext, securityexception, string, subject, subject, threading, threads, util

The ActiveMQ JaasAuthenticationBroker.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.activemq.security;

import java.security.Principal;
import java.util.Iterator;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArrayList;

import javax.security.auth.Subject;
import javax.security.auth.login.LoginContext;

import org.apache.activemq.broker.Broker;
import org.apache.activemq.broker.BrokerFilter;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.command.ConnectionInfo;
import org.apache.activemq.jaas.JassCredentialCallbackHandler;

/**
 * Logs a user in using JAAS.
 * 
 * 
 */
public class JaasAuthenticationBroker extends BrokerFilter {

    private final String jassConfiguration;
    private final CopyOnWriteArrayList<SecurityContext> securityContexts = new CopyOnWriteArrayList();

    public JaasAuthenticationBroker(Broker next, String jassConfiguration) {
        super(next);
        this.jassConfiguration = jassConfiguration;
    }

    static class JaasSecurityContext extends SecurityContext {

        private final Subject subject;

        public JaasSecurityContext(String userName, Subject subject) {
            super(userName);
            this.subject = subject;
        }

        public Set<Principal> getPrincipals() {
            return subject.getPrincipals();
        }

    }

    public void addConnection(ConnectionContext context, ConnectionInfo info) throws Exception {

        if (context.getSecurityContext() == null) {
            // Set the TCCL since it seems JAAS needs it to find the login
            // module classes.
            ClassLoader original = Thread.currentThread().getContextClassLoader();
            Thread.currentThread().setContextClassLoader(JaasAuthenticationBroker.class.getClassLoader());
            try {
                // Do the login.
                try {
                    JassCredentialCallbackHandler callback = new JassCredentialCallbackHandler(info
                        .getUserName(), info.getPassword());
                    LoginContext lc = new LoginContext(jassConfiguration, callback);
                    lc.login();
                    Subject subject = lc.getSubject();

                    SecurityContext s = new JaasSecurityContext(info.getUserName(), subject);
                    context.setSecurityContext(s);
                    securityContexts.add(s);
                } catch (Exception e) {
                    throw (SecurityException)new SecurityException("User name or password is invalid.")
                        .initCause(e);
                }
            } finally {
                Thread.currentThread().setContextClassLoader(original);
            }
        }
        super.addConnection(context, info);
    }

    public void removeConnection(ConnectionContext context, ConnectionInfo info, Throwable error)
        throws Exception {
        super.removeConnection(context, info, error);
        if (securityContexts.remove(context.getSecurityContext())) {
            context.setSecurityContext(null);
        }
    }

    /**
     * Previously logged in users may no longer have the same access anymore.
     * Refresh all the logged into users.
     */
    public void refresh() {
        for (Iterator<SecurityContext> iter = securityContexts.iterator(); iter.hasNext();) {
            SecurityContext sc = iter.next();
            sc.getAuthorizedReadDests().clear();
            sc.getAuthorizedWriteDests().clear();
        }
    }
}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ JaasAuthenticationBroker.java source code file:

new blog posts

 

Copyright 1998-2016 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.