| /** |
| * 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.shiro.authc; |
| |
| import org.apache.activemq.broker.ConnectionContext; |
| import org.apache.activemq.command.ConnectionInfo; |
| import org.apache.activemq.security.SecurityContext; |
| import org.apache.activemq.shiro.ConnectionReference; |
| import org.apache.activemq.shiro.env.EnvironmentFilter; |
| import org.apache.activemq.shiro.subject.ConnectionSubjectResolver; |
| import org.apache.activemq.shiro.subject.SubjectConnectionReference; |
| import org.apache.activemq.shiro.subject.SubjectSecurityContext; |
| import org.apache.shiro.authc.AuthenticationException; |
| import org.apache.shiro.authc.AuthenticationToken; |
| import org.apache.shiro.subject.Subject; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * The {@code AuthenticationFilter} enforces if authentication is required before allowing the broker filter chain |
| * to continue. |
| * <p/> |
| * This implementation performs a connection-level authentication assertion: If the {@link Subject} associated with the |
| * connection<b>*</b> is not authenticated, and the |
| * {@link AuthenticationPolicy AuthenticationPolicy} requires the {@code Subject} to be authenticated, it will attempt |
| * to {@link Subject#login(org.apache.shiro.authc.AuthenticationToken) login} the Subject automatically. The |
| * {@link AuthenticationToken} used to login is created by the |
| * {@link #getAuthenticationTokenFactory() authenticationTokenFactory}, typically by acquiring any credentials |
| * associated with the connection. |
| * <p/> |
| * Once the connection's {@code Subject} is authenticated as necessary, the broker filter chain will continue |
| * as expected. |
| * <p/> |
| * <b>*</b>: The upstream {@link org.apache.activemq.shiro.subject.SubjectFilter} is expected to execute before this one, ensuring a Subject instance |
| * is already associated with the connection. |
| * |
| * @since 5.10.0 |
| */ |
| public class AuthenticationFilter extends EnvironmentFilter { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(AuthenticationFilter.class); |
| |
| private AuthenticationPolicy authenticationPolicy; |
| private AuthenticationTokenFactory authenticationTokenFactory; |
| |
| public AuthenticationFilter() { |
| this.authenticationPolicy = new DefaultAuthenticationPolicy(); |
| this.authenticationTokenFactory = new DefaultAuthenticationTokenFactory(); |
| } |
| |
| public AuthenticationPolicy getAuthenticationPolicy() { |
| return authenticationPolicy; |
| } |
| |
| public void setAuthenticationPolicy(AuthenticationPolicy authenticationPolicy) { |
| this.authenticationPolicy = authenticationPolicy; |
| } |
| |
| public AuthenticationTokenFactory getAuthenticationTokenFactory() { |
| return authenticationTokenFactory; |
| } |
| |
| public void setAuthenticationTokenFactory(AuthenticationTokenFactory authenticationTokenFactory) { |
| this.authenticationTokenFactory = authenticationTokenFactory; |
| } |
| |
| protected Subject getSubject(ConnectionReference conn) { |
| return new ConnectionSubjectResolver(conn).getSubject(); |
| } |
| |
| @Override |
| public void addConnection(ConnectionContext context, ConnectionInfo info) throws Exception { |
| |
| if (isEnabled()) { //disabled means don't enforce authentication (i.e. allow anonymous access): |
| |
| Subject subject = getSubject(new ConnectionReference(context, info, getEnvironment())); |
| |
| if (!subject.isAuthenticated()) { |
| |
| SubjectConnectionReference connection = new SubjectConnectionReference(context, info, getEnvironment(), subject); |
| |
| if (this.authenticationPolicy.isAuthenticationRequired(connection)) { |
| AuthenticationToken token = this.authenticationTokenFactory.getAuthenticationToken(connection); |
| if (token == null) { |
| String msg = "Unable to obtain authentication credentials for newly established connection. " + |
| "Authentication is required."; |
| throw new AuthenticationException(msg); |
| } |
| //token is not null - login the current subject: |
| subject.login(token); |
| } |
| } |
| } |
| |
| super.addConnection(context, info); |
| } |
| |
| @Override |
| public void removeConnection(ConnectionContext context, ConnectionInfo info, Throwable error) throws Exception { |
| try { |
| super.removeConnection(context, info, error); |
| } finally { |
| SecurityContext secCtx = context.getSecurityContext(); |
| |
| if (secCtx instanceof SubjectSecurityContext) { |
| |
| SubjectSecurityContext subjectSecurityContext = (SubjectSecurityContext) secCtx; |
| Subject subject = subjectSecurityContext.getSubject(); |
| |
| if (subject != null) { |
| try { |
| subject.logout(); |
| } catch (Throwable t) { |
| String msg = "Unable to cleanly logout connection Subject during connection removal. This is " + |
| "unexpected but not critical: it can be safely ignored because the " + |
| "connection will no longer be used."; |
| LOG.info(msg, t); |
| } |
| } |
| } |
| } |
| } |
| } |