| /** |
| * 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 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(); |
| } |
| } |
| } |