| /** |
| * 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.sqoop.security.Authentication; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.security.SecurityUtil; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.log4j.Logger; |
| import org.apache.sqoop.common.MapContext; |
| import org.apache.sqoop.common.SqoopException; |
| import org.apache.sqoop.core.SqoopConfiguration; |
| import org.apache.sqoop.security.AuthenticationHandler; |
| import org.apache.sqoop.security.SecurityConstants; |
| import org.apache.sqoop.security.SecurityError; |
| |
| import java.io.IOException; |
| |
| public class KerberosAuthenticationHandler extends AuthenticationHandler { |
| |
| private static final Logger LOG = Logger.getLogger(KerberosAuthenticationHandler.class); |
| |
| /** |
| * Principal for Kerberos option value |
| */ |
| private String keytabPrincipal; |
| |
| public String getKeytabPrincipal() { |
| return keytabPrincipal; |
| } |
| |
| /** |
| * Keytab for Kerberos option value |
| */ |
| private String keytabFile; |
| |
| public String getKeytabFile() { |
| return keytabFile; |
| } |
| |
| public void doInitialize() { |
| securityEnabled = true; |
| } |
| |
| public void secureLogin() { |
| MapContext mapContext = SqoopConfiguration.getInstance().getContext(); |
| String keytab = mapContext.getString( |
| SecurityConstants.AUTHENTICATION_KERBEROS_KEYTAB).trim(); |
| if (keytab.length() == 0) { |
| throw new SqoopException(SecurityError.AUTH_0001, |
| SecurityConstants.AUTHENTICATION_KERBEROS_KEYTAB); |
| } |
| keytabFile = keytab; |
| |
| String principal = mapContext.getString( |
| SecurityConstants.AUTHENTICATION_KERBEROS_PRINCIPAL).trim(); |
| if (principal.length() == 0) { |
| throw new SqoopException(SecurityError.AUTH_0002, |
| SecurityConstants.AUTHENTICATION_KERBEROS_PRINCIPAL); |
| } |
| keytabPrincipal = principal; |
| |
| Configuration conf = new Configuration(); |
| conf.set(get_hadoop_security_authentication(), |
| SecurityConstants.TYPE.KERBEROS.name()); |
| UserGroupInformation.setConfiguration(conf); |
| try { |
| String hostPrincipal = SecurityUtil.getServerPrincipal(principal, "0.0.0.0"); |
| UserGroupInformation.loginUserFromKeytab(hostPrincipal, keytab); |
| } catch (IOException ex) { |
| throw new SqoopException(SecurityError.AUTH_0003, ex); |
| } |
| LOG.info("Using Kerberos authentication, principal [" |
| + principal + "] keytab [" + keytab + "]"); |
| } |
| } |