| /** |
| * 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.kerberos; |
| |
| import backtype.storm.security.auth.AuthUtils; |
| import backtype.storm.security.auth.ReqContext; |
| import backtype.storm.security.auth.SaslTransportPlugin; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.security.auth.Subject; |
| import javax.security.auth.callback.*; |
| import javax.security.auth.login.AppConfigurationEntry; |
| import javax.security.auth.login.Configuration; |
| import javax.security.sasl.AuthorizeCallback; |
| import java.io.IOException; |
| import java.util.Map; |
| |
| /** |
| * SASL server side callback handler |
| */ |
| public class ServerCallbackHandler implements CallbackHandler { |
| private static final Logger LOG = LoggerFactory.getLogger(ServerCallbackHandler.class); |
| |
| private String userName; |
| |
| public ServerCallbackHandler(Configuration configuration, Map stormConf) throws IOException { |
| if (configuration==null) return; |
| |
| AppConfigurationEntry configurationEntries[] = configuration.getAppConfigurationEntry(AuthUtils.LOGIN_CONTEXT_SERVER); |
| if (configurationEntries == null) { |
| String errorMessage = "Could not find a '"+AuthUtils.LOGIN_CONTEXT_SERVER+"' entry in this configuration: Server cannot start."; |
| LOG.error(errorMessage); |
| throw new IOException(errorMessage); |
| } |
| |
| } |
| |
| public void handle(Callback[] callbacks) throws UnsupportedCallbackException { |
| for (Callback callback : callbacks) { |
| if (callback instanceof NameCallback) { |
| handleNameCallback((NameCallback) callback); |
| } else if (callback instanceof PasswordCallback) { |
| handlePasswordCallback((PasswordCallback) callback); |
| } else if (callback instanceof AuthorizeCallback) { |
| handleAuthorizeCallback((AuthorizeCallback) callback); |
| } |
| } |
| } |
| |
| private void handleNameCallback(NameCallback nc) { |
| LOG.debug("handleNameCallback"); |
| userName = nc.getDefaultName(); |
| nc.setName(nc.getDefaultName()); |
| } |
| |
| private void handlePasswordCallback(PasswordCallback pc) { |
| LOG.warn("No password found for user: " + userName); |
| } |
| |
| private void handleAuthorizeCallback(AuthorizeCallback ac) { |
| String authenticationID = ac.getAuthenticationID(); |
| LOG.info("Successfully authenticated client: authenticationID=" + authenticationID + " authorizationID= " + ac.getAuthorizationID()); |
| |
| //if authorizationId is not set, set it to authenticationId. |
| if(ac.getAuthorizationID() == null) { |
| ac.setAuthorizedID(authenticationID); |
| } |
| |
| //When authNid and authZid are not equal , authNId is attempting to impersonate authZid, We |
| //add the authNid as the real user in reqContext's subject which will be used during authorization. |
| if(!ac.getAuthenticationID().equals(ac.getAuthorizationID())) { |
| ReqContext.context().setRealPrincipal(new SaslTransportPlugin.User(ac.getAuthenticationID())); |
| } |
| |
| ac.setAuthorized(true); |
| } |
| } |