| /** |
| * 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.security.cert.X509Certificate; |
| import java.util.Iterator; |
| |
| import javax.security.auth.Subject; |
| import javax.security.auth.callback.CallbackHandler; |
| 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.JaasCertificateCallbackHandler; |
| import org.apache.activemq.jaas.UserPrincipal; |
| |
| /** |
| * A JAAS Authentication Broker that uses SSL Certificates. This class will |
| * provide the JAAS framework with a JaasCertificateCallbackHandler that will |
| * grant JAAS access to incoming connections' SSL certificate chains. NOTE: |
| * There is a chance that the incoming connection does not have a valid |
| * certificate (has null). |
| * |
| * @author sepandm@gmail.com (Sepand) |
| */ |
| public class JaasCertificateAuthenticationBroker extends BrokerFilter { |
| private final String jaasConfiguration; |
| |
| /** |
| * Simple constructor. Leaves everything to superclass. |
| * |
| * @param next The Broker that does the actual work for this Filter. |
| * @param jassConfiguration The JAAS domain configuration name (refere to |
| * JAAS documentation). |
| */ |
| public JaasCertificateAuthenticationBroker(Broker next, String jaasConfiguration) { |
| super(next); |
| |
| this.jaasConfiguration = jaasConfiguration; |
| } |
| |
| /** |
| * Overridden to allow for authentication based on client certificates. |
| * Connections being added will be authenticated based on their certificate |
| * chain and the JAAS module specified through the JAAS framework. NOTE: The |
| * security context's username will be set to the first UserPrincipal |
| * created by the login module. |
| * |
| * @param context The context for the incoming Connection. |
| * @param info The ConnectionInfo Command representing the incoming |
| * connection. |
| */ |
| public void addConnection(ConnectionContext context, ConnectionInfo info) throws Exception { |
| |
| if (context.getSecurityContext() == null) { |
| if (!(info.getTransportContext() instanceof X509Certificate[])) { |
| throw new SecurityException("Unable to authenticate transport without SSL certificate."); |
| } |
| |
| // 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 { |
| CallbackHandler callback = new JaasCertificateCallbackHandler((X509Certificate[])info.getTransportContext()); |
| LoginContext lc = new LoginContext(jaasConfiguration, callback); |
| lc.login(); |
| Subject subject = lc.getSubject(); |
| |
| String dnName = ""; |
| |
| for (Iterator iter = subject.getPrincipals().iterator(); iter.hasNext();) { |
| Principal nextPrincipal = (Principal)iter.next(); |
| if (nextPrincipal instanceof UserPrincipal) { |
| dnName = ((UserPrincipal)nextPrincipal).getName(); |
| break; |
| } |
| } |
| SecurityContext s = new JaasCertificateSecurityContext(dnName, subject, (X509Certificate[])info.getTransportContext()); |
| context.setSecurityContext(s); |
| } catch (Exception e) { |
| throw new SecurityException("User name or password is invalid: " + e.getMessage(), e); |
| } |
| } finally { |
| Thread.currentThread().setContextClassLoader(original); |
| } |
| } |
| super.addConnection(context, info); |
| } |
| |
| /** |
| * Overriding removeConnection to make sure the security context is cleaned. |
| */ |
| public void removeConnection(ConnectionContext context, ConnectionInfo info, Throwable error) throws Exception { |
| super.removeConnection(context, info, error); |
| |
| context.setSecurityContext(null); |
| } |
| } |