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HADOOP-8561. Introduce HADOOP_PROXY_USER for secure impersonation in child hadoop client processes. (Yu Gao via llu)

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1422429 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Luke Lu 2012-12-16 00:38:59 +00:00
parent 8329fae686
commit db09dba7ae
2 changed files with 60 additions and 4 deletions
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17
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java
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@ -81,6 +81,7 @@ public class UserGroupInformation {
*/
private static final float TICKET_RENEW_WINDOW = 0.80f;
static final String HADOOP_USER_NAME = "HADOOP_USER_NAME";
static final String HADOOP_PROXY_USER = "HADOOP_PROXY_USER";
/**
* UgiMetrics maintains UGI activity statistics
@ -641,10 +642,18 @@ static UserGroupInformation getLoginUser() throws IOException {
newLoginContext(authenticationMethod.getLoginAppName(),
subject, new HadoopConfiguration());
login.login();
loginUser = new UserGroupInformation(subject);
loginUser.setLogin(login);
loginUser.setAuthenticationMethod(authenticationMethod);
loginUser = new UserGroupInformation(login.getSubject());
UserGroupInformation realUser = new UserGroupInformation(subject);
realUser.setLogin(login);
realUser.setAuthenticationMethod(authenticationMethod);
realUser = new UserGroupInformation(login.getSubject());
// If the HADOOP_PROXY_USER environment variable or property
// is specified, create a proxy user as the logged in user.
String proxyUser = System.getenv(HADOOP_PROXY_USER);
if (proxyUser == null) {
proxyUser = System.getProperty(HADOOP_PROXY_USER);
}
loginUser = proxyUser == null ? realUser : createProxyUser(proxyUser, realUser);
String fileLocation = System.getenv(HADOOP_TOKEN_FILE_LOCATION);
if (fileLocation != null) {
// load the token storage file and put all of the tokens into the

47
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/security/TestProxyUserFromEnv.java Normal file
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@ -0,0 +1,47 @@
/**
* 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();
assertEquals(realUser, realUgi.getUserName());
}
}