| /* |
| * |
| * 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.qpid.server.security.access.plugins; |
| |
| import javax.security.auth.Subject; |
| |
| import org.apache.commons.configuration.ConfigurationException; |
| import org.apache.log4j.Logger; |
| import org.apache.qpid.server.configuration.plugins.ConfigurationPlugin; |
| import org.apache.qpid.server.security.AbstractPlugin; |
| import org.apache.qpid.server.security.Result; |
| import org.apache.qpid.server.security.SecurityManager; |
| import org.apache.qpid.server.security.SecurityPluginFactory; |
| import org.apache.qpid.server.security.access.ObjectProperties; |
| import org.apache.qpid.server.security.access.ObjectType; |
| import org.apache.qpid.server.security.access.Operation; |
| import org.apache.qpid.server.security.access.config.RuleSet; |
| |
| /** |
| * This access control plugin implements version two plain text access control. |
| */ |
| public class AccessControl extends AbstractPlugin |
| { |
| public static final Logger _logger = Logger.getLogger(AccessControl.class); |
| |
| private RuleSet _ruleSet; |
| |
| public static final SecurityPluginFactory<AccessControl> FACTORY = new SecurityPluginFactory<AccessControl>() |
| { |
| public Class<AccessControl> getPluginClass() |
| { |
| return AccessControl.class; |
| } |
| |
| public String getPluginName() |
| { |
| return AccessControl.class.getName(); |
| } |
| |
| public AccessControl newInstance(ConfigurationPlugin config) throws ConfigurationException |
| { |
| AccessControlConfiguration configuration = config.getConfiguration(AccessControlConfiguration.class.getName()); |
| |
| // If there is no configuration for this plugin then don't load it. |
| if (configuration == null) |
| { |
| return null; |
| } |
| |
| AccessControl plugin = new AccessControl(); |
| plugin.configure(configuration); |
| return plugin; |
| } |
| }; |
| |
| public Result getDefault() |
| { |
| return _ruleSet.getDefault(); |
| } |
| |
| /** |
| * Object instance access authorisation. |
| * |
| * Delegate to the {@link #authorise(Operation, ObjectType, ObjectProperties)} method, with |
| * the operation set to ACCESS and no object properties. |
| */ |
| public Result access(ObjectType objectType, Object instance) |
| { |
| return authorise(Operation.ACCESS, objectType, ObjectProperties.EMPTY); |
| } |
| |
| /** |
| * Check if an operation is authorised by asking the configuration object about the access |
| * control rules granted to the current thread's {@link Subject}. If there is no current |
| * user the plugin will abstain. |
| */ |
| public Result authorise(Operation operation, ObjectType objectType, ObjectProperties properties) |
| { |
| final Subject subject = SecurityManager.getThreadSubject(); |
| // Abstain if there is no subject/principal associated with this thread |
| if (subject == null || subject.getPrincipals().size() == 0) |
| { |
| return Result.ABSTAIN; |
| } |
| |
| _logger.debug("Checking " + operation + " " + objectType); |
| return _ruleSet.check(subject, operation, objectType, properties); |
| } |
| |
| public void configure(ConfigurationPlugin config) |
| { |
| super.configure(config); |
| |
| AccessControlConfiguration accessConfig = (AccessControlConfiguration) getConfig(); |
| |
| _ruleSet = accessConfig.getRuleSet(); |
| } |
| } |