001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.security;
018
019import java.security.Principal;
020import java.util.Set;
021
022import javax.security.auth.Subject;
023import javax.security.auth.login.LoginContext;
024
025import org.apache.activemq.broker.Broker;
026import org.apache.activemq.broker.ConnectionContext;
027import org.apache.activemq.command.ConnectionInfo;
028import org.apache.activemq.jaas.JassCredentialCallbackHandler;
029
030/**
031 * Logs a user in using JAAS.
032 *
033 *
034 */
035public class JaasAuthenticationBroker extends AbstractAuthenticationBroker {
036
037    private final String jassConfiguration;
038
039    public JaasAuthenticationBroker(Broker next, String jassConfiguration) {
040        super(next);
041        this.jassConfiguration = jassConfiguration;
042    }
043
044    static class JaasSecurityContext extends SecurityContext {
045
046        private final Subject subject;
047
048        public JaasSecurityContext(String userName, Subject subject) {
049            super(userName);
050            this.subject = subject;
051        }
052
053        @Override
054        public Set<Principal> getPrincipals() {
055            return subject.getPrincipals();
056        }
057    }
058
059    @Override
060    public void addConnection(ConnectionContext context, ConnectionInfo info) throws Exception {
061
062        if (context.getSecurityContext() == null) {
063            // Set the TCCL since it seems JAAS needs it to find the login
064            // module classes.
065            ClassLoader original = Thread.currentThread().getContextClassLoader();
066            Thread.currentThread().setContextClassLoader(JaasAuthenticationBroker.class.getClassLoader());
067            try {
068                // Do the login.
069                try {
070                    JassCredentialCallbackHandler callback = new JassCredentialCallbackHandler(info
071                        .getUserName(), info.getPassword());
072                    LoginContext lc = new LoginContext(jassConfiguration, callback);
073                    lc.login();
074                    Subject subject = lc.getSubject();
075
076                    SecurityContext s = new JaasSecurityContext(info.getUserName(), subject);
077                    context.setSecurityContext(s);
078                    securityContexts.add(s);
079                } catch (Exception e) {
080                    throw (SecurityException)new SecurityException("User name [" + info.getUserName() + "] or password is invalid.")
081                        .initCause(e);
082                }
083            } finally {
084                Thread.currentThread().setContextClassLoader(original);
085            }
086        }
087        super.addConnection(context, info);
088    }
089}