| /** |
| * 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.hadoop.security; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| |
| import org.junit.Test; |
| |
| public class TestProxyUserFromEnv { |
| /** Test HADOOP_PROXY_USER for impersonation */ |
| @Test |
| public void testProxyUserFromEnvironment() throws IOException { |
| String proxyUser = "foo.bar"; |
| System.setProperty(UserGroupInformation.HADOOP_PROXY_USER, proxyUser); |
| UserGroupInformation ugi = UserGroupInformation.getLoginUser(); |
| assertEquals(proxyUser, ugi.getUserName()); |
| |
| UserGroupInformation realUgi = ugi.getRealUser(); |
| assertNotNull(realUgi); |
| // get the expected real user name |
| Process pp = Runtime.getRuntime().exec("whoami"); |
| BufferedReader br = new BufferedReader |
| (new InputStreamReader(pp.getInputStream())); |
| String realUser = br.readLine().trim(); |
| |
| // On Windows domain joined machine, whoami returns the username |
| // in the DOMAIN\\username format, so we trim the domain part before |
| // the comparison. We don't have to special case for Windows |
| // given that Unix systems do not allow slashes in usernames. |
| int backslashIndex = realUser.indexOf('\\'); |
| if (backslashIndex != -1) { |
| realUser = realUser.substring(backslashIndex + 1); |
| } |
| assertEquals(realUser, realUgi.getUserName()); |
| } |
| } |