| /** |
| * 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 backtype.storm.security.auth.digest; |
| |
| import java.io.IOException; |
| import javax.security.auth.callback.Callback; |
| import javax.security.auth.callback.CallbackHandler; |
| import javax.security.auth.callback.NameCallback; |
| import javax.security.auth.callback.PasswordCallback; |
| import javax.security.auth.callback.UnsupportedCallbackException; |
| import javax.security.sasl.AuthorizeCallback; |
| import javax.security.sasl.RealmCallback; |
| import javax.security.auth.login.AppConfigurationEntry; |
| import javax.security.auth.login.Configuration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import backtype.storm.security.auth.AuthUtils; |
| |
| /** |
| * client side callback handler. |
| */ |
| public class ClientCallbackHandler implements CallbackHandler { |
| private static final String USERNAME = "username"; |
| private static final String PASSWORD = "password"; |
| private static final Logger LOG = LoggerFactory.getLogger(ClientCallbackHandler.class); |
| private String _username = null; |
| private String _password = null; |
| |
| /** |
| * Constructor based on a JAAS configuration |
| * |
| * For digest, you should have a pair of user name and password defined. |
| * |
| * @param configuration |
| * @throws IOException |
| */ |
| public ClientCallbackHandler(Configuration configuration) throws IOException { |
| if (configuration == null) return; |
| AppConfigurationEntry configurationEntries[] = configuration.getAppConfigurationEntry(AuthUtils.LOGIN_CONTEXT_CLIENT); |
| if (configurationEntries == null) { |
| String errorMessage = "Could not find a '"+AuthUtils.LOGIN_CONTEXT_CLIENT |
| + "' entry in this configuration: Client cannot start."; |
| throw new IOException(errorMessage); |
| } |
| |
| _password = ""; |
| for(AppConfigurationEntry entry: configurationEntries) { |
| if (entry.getOptions().get(USERNAME) != null) { |
| _username = (String)entry.getOptions().get(USERNAME); |
| } |
| if (entry.getOptions().get(PASSWORD) != null) { |
| _password = (String)entry.getOptions().get(PASSWORD); |
| } |
| } |
| } |
| |
| /** |
| * This method is invoked by SASL for authentication challenges |
| * @param callbacks a collection of challenge callbacks |
| */ |
| public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException { |
| for (Callback c : callbacks) { |
| if (c instanceof NameCallback) { |
| LOG.debug("name callback"); |
| NameCallback nc = (NameCallback) c; |
| nc.setName(_username); |
| } else if (c instanceof PasswordCallback) { |
| LOG.debug("password callback"); |
| PasswordCallback pc = (PasswordCallback)c; |
| if (_password != null) { |
| pc.setPassword(_password.toCharArray()); |
| } |
| } else if (c instanceof AuthorizeCallback) { |
| LOG.debug("authorization callback"); |
| AuthorizeCallback ac = (AuthorizeCallback) c; |
| String authid = ac.getAuthenticationID(); |
| String authzid = ac.getAuthorizationID(); |
| if (authid.equals(authzid)) { |
| ac.setAuthorized(true); |
| } else { |
| ac.setAuthorized(false); |
| } |
| if (ac.isAuthorized()) { |
| ac.setAuthorizedID(authzid); |
| } |
| } else if (c instanceof RealmCallback) { |
| RealmCallback rc = (RealmCallback) c; |
| ((RealmCallback) c).setText(rc.getDefaultText()); |
| } else { |
| throw new UnsupportedCallbackException(c); |
| } |
| } |
| } |
| } |