| /** |
| * 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.kerby.has.common.util; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.security.auth.Subject; |
| import javax.security.auth.login.AppConfigurationEntry; |
| import javax.security.auth.login.Configuration; |
| import javax.security.auth.login.LoginContext; |
| import javax.security.auth.login.LoginException; |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * JAAS utilities for Has login. |
| */ |
| public class HasJaasLoginUtil { |
| public static final Logger LOG = LoggerFactory.getLogger(HasJaasLoginUtil.class); |
| |
| public static final boolean ENABLE_DEBUG = true; |
| |
| private static String getKrb5LoginModuleName() { |
| return System.getProperty("java.vendor").contains("IBM") |
| ? "com.ibm.security.auth.module.Krb5LoginModule" |
| : "org.apache.kerby.has.client.HasLoginModule"; |
| } |
| |
| /** |
| * Log a user in from a tgt ticket. |
| * |
| * @throws IOException |
| */ |
| public static synchronized Subject loginUserFromTgtTicket(String hadoopSecurityHas) throws IOException { |
| |
| TICKET_KERBEROS_OPTIONS.put("hadoopSecurityHas", hadoopSecurityHas); |
| Subject subject = new Subject(); |
| Configuration conf = new HasJaasConf(); |
| String confName = "ticket-kerberos"; |
| LoginContext loginContext = null; |
| try { |
| loginContext = new LoginContext(confName, subject, null, conf); |
| } catch (LoginException e) { |
| throw new IOException("Fail to create LoginContext for " + e); |
| } |
| try { |
| loginContext.login(); |
| LOG.info("Login successful for user " |
| + subject.getPrincipals().iterator().next().getName()); |
| } catch (LoginException e) { |
| throw new IOException("Login failure for " + e); |
| } |
| return loginContext.getSubject(); |
| } |
| |
| /** |
| * Has Jaas config. |
| */ |
| static class HasJaasConf extends Configuration { |
| @Override |
| public AppConfigurationEntry[] getAppConfigurationEntry(String name) { |
| |
| return new AppConfigurationEntry[]{ |
| TICKET_KERBEROS_LOGIN}; |
| } |
| } |
| |
| private static final Map<String, String> BASIC_JAAS_OPTIONS = |
| new HashMap<String, String>(); |
| |
| static { |
| String jaasEnvVar = System.getenv("HADOOP_JAAS_DEBUG"); |
| if (jaasEnvVar != null && "true".equalsIgnoreCase(jaasEnvVar)) { |
| BASIC_JAAS_OPTIONS.put("debug", String.valueOf(ENABLE_DEBUG)); |
| } |
| } |
| |
| private static final Map<String, String> TICKET_KERBEROS_OPTIONS = |
| new HashMap<String, String>(); |
| |
| static { |
| TICKET_KERBEROS_OPTIONS.put("doNotPrompt", "true"); |
| TICKET_KERBEROS_OPTIONS.put("useTgtTicket", "true"); |
| TICKET_KERBEROS_OPTIONS.putAll(BASIC_JAAS_OPTIONS); |
| } |
| |
| private static final AppConfigurationEntry TICKET_KERBEROS_LOGIN = |
| new AppConfigurationEntry(getKrb5LoginModuleName(), |
| AppConfigurationEntry.LoginModuleControlFlag.OPTIONAL, |
| TICKET_KERBEROS_OPTIONS); |
| } |