| /* |
| * |
| * 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.security; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.qpid.QpidConfig; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class CallbackHandlerRegistry |
| { |
| private static final Logger _logger = LoggerFactory.getLogger(CallbackHandlerRegistry.class); |
| private static CallbackHandlerRegistry _instance = new CallbackHandlerRegistry(); |
| |
| private Map<String,Class> _mechanismToHandlerClassMap = new HashMap<String,Class>(); |
| |
| private StringBuilder _mechanisms; |
| |
| public static CallbackHandlerRegistry getInstance() |
| { |
| return _instance; |
| } |
| |
| public Class getCallbackHandlerClass(String mechanism) |
| { |
| return _mechanismToHandlerClassMap.get(mechanism); |
| } |
| |
| public String getMechanisms() |
| { |
| return _mechanisms.toString(); |
| } |
| |
| private CallbackHandlerRegistry() |
| { |
| // first we register any Sasl client factories |
| DynamicSaslRegistrar.registerSaslProviders(); |
| registerMechanisms(); |
| } |
| |
| private void registerMechanisms() |
| { |
| for (QpidConfig.SecurityMechanism securityMechanism: QpidConfig.get().getSecurityMechanisms() ) |
| { |
| Class clazz = null; |
| try |
| { |
| clazz = Class.forName(securityMechanism.getHandler()); |
| if (!AMQPCallbackHandler.class.isAssignableFrom(clazz)) |
| { |
| _logger.debug("SASL provider " + clazz + " does not implement " + AMQPCallbackHandler.class + |
| ". Skipping"); |
| continue; |
| } |
| _mechanismToHandlerClassMap.put(securityMechanism.getType(), clazz); |
| if (_mechanisms == null) |
| { |
| |
| _mechanisms = new StringBuilder(); |
| _mechanisms.append(securityMechanism.getType()); |
| } |
| else |
| { |
| _mechanisms.append(" " + securityMechanism.getType()); |
| } |
| } |
| catch (ClassNotFoundException ex) |
| { |
| _logger.debug("Unable to load class " + securityMechanism.getHandler() + ". Skipping that SASL provider"); |
| continue; |
| } |
| } |
| } |
| } |