/**
* 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<SecurityContext>();
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 [" + info.getUserName() + "] 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();
}
}
}