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From t...@apache.org
Subject svn commit: r1619552 - in /hadoop/common/branches/branch-2/hadoop-common-project: hadoop-common/ hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/ hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/ hadoop-kms/src/site/apt/ ha...
Date Thu, 21 Aug 2014 19:00:07 GMT
Author: tucu
Date: Thu Aug 21 19:00:06 2014
New Revision: 1619552

URL: http://svn.apache.org/r1619552
Log:
HADOOP-10698. KMS, add proxyuser support. (tucu)


Conflicts:
	hadoop-common-project/hadoop-common/CHANGES.txt

Modified:
    hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt
    hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/KMSClientProvider.java
    hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSAuthenticationFilter.java
    hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/site/apt/index.apt.vm
    hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMS.java

Modified: hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt?rev=1619552&r1=1619551&r2=1619552&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt (original)
+++ hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt Thu Aug
21 19:00:06 2014
@@ -127,6 +127,8 @@ Release 2.6.0 - UNRELEASED
 
     HADOOP-10770. KMS add delegation token support. (tucu)
 
+    HADOOP-10698. KMS, add proxyuser support. (tucu)
+
   OPTIMIZATIONS
 
     HADOOP-10838. Byte array native checksumming. (James Thomas via todd)

Modified: hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/KMSClientProvider.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/KMSClientProvider.java?rev=1619552&r1=1619551&r2=1619552&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/KMSClientProvider.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/KMSClientProvider.java
Thu Aug 21 19:00:06 2014
@@ -28,6 +28,7 @@ import org.apache.hadoop.fs.CommonConfig
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.ProviderUtils;
+import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authentication.client.AuthenticationException;
 import org.apache.hadoop.security.authentication.client.ConnectionConfigurator;
 import org.apache.hadoop.security.ssl.SSLFactory;
@@ -52,6 +53,7 @@ import java.net.URL;
 import java.net.URLEncoder;
 import java.security.GeneralSecurityException;
 import java.security.NoSuchAlgorithmException;
+import java.security.PrivilegedExceptionAction;
 import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.Date;
@@ -235,6 +237,7 @@ public class KMSClientProvider extends K
   private SSLFactory sslFactory;
   private ConnectionConfigurator configurator;
   private DelegationTokenAuthenticatedURL.Token authToken;
+  private UserGroupInformation loginUgi;
 
   @Override
   public String toString() {
@@ -316,6 +319,7 @@ public class KMSClientProvider extends K
                     KMS_CLIENT_ENC_KEY_CACHE_NUM_REFILL_THREADS_DEFAULT),
             new EncryptedQueueRefiller());
     authToken = new DelegationTokenAuthenticatedURL.Token();
+    loginUgi = UserGroupInformation.getCurrentUser();
   }
 
   private String createServiceURL(URL url) throws IOException {
@@ -374,14 +378,29 @@ public class KMSClientProvider extends K
     return conn;
   }
 
-  private HttpURLConnection createConnection(URL url, String method)
+  private HttpURLConnection createConnection(final URL url, String method)
       throws IOException {
     HttpURLConnection conn;
     try {
-      DelegationTokenAuthenticatedURL authUrl =
-          new DelegationTokenAuthenticatedURL(configurator);
-      conn = authUrl.openConnection(url, authToken);
-    } catch (AuthenticationException ex) {
+      // if current UGI is different from UGI at constructor time, behave as
+      // proxyuser
+      UserGroupInformation currentUgi = UserGroupInformation.getCurrentUser();
+      final String doAsUser =
+          (loginUgi.getShortUserName().equals(currentUgi.getShortUserName()))
+          ? null : currentUgi.getShortUserName();
+
+      // creating the HTTP connection using the current UGI at constructor time
+      conn = loginUgi.doAs(new PrivilegedExceptionAction<HttpURLConnection>() {
+        @Override
+        public HttpURLConnection run() throws Exception {
+          DelegationTokenAuthenticatedURL authUrl =
+              new DelegationTokenAuthenticatedURL(configurator);
+          return authUrl.openConnection(url, authToken, doAsUser);
+        }
+      });
+    } catch (IOException ex) {
+      throw ex;
+    } catch (Exception ex) {
       throw new IOException(ex);
     }
     conn.setUseCaches(false);
@@ -412,20 +431,27 @@ public class KMSClientProvider extends K
     if (status != expected) {
       InputStream es = null;
       try {
-        es = conn.getErrorStream();
-        ObjectMapper mapper = new ObjectMapper();
-        Map json = mapper.readValue(es, Map.class);
-        String exClass = (String) json.get(
-            KMSRESTConstants.ERROR_EXCEPTION_JSON);
-        String exMsg = (String)
-            json.get(KMSRESTConstants.ERROR_MESSAGE_JSON);
         Exception toThrow;
-        try {
-          ClassLoader cl = KMSClientProvider.class.getClassLoader();
-          Class klass = cl.loadClass(exClass);
-          Constructor constr = klass.getConstructor(String.class);
-          toThrow = (Exception) constr.newInstance(exMsg);
-        } catch (Exception ex) {
+        String contentType = conn.getHeaderField(CONTENT_TYPE);
+        if (contentType != null &&
+            contentType.toLowerCase().startsWith(APPLICATION_JSON_MIME)) {
+          es = conn.getErrorStream();
+          ObjectMapper mapper = new ObjectMapper();
+          Map json = mapper.readValue(es, Map.class);
+          String exClass = (String) json.get(
+              KMSRESTConstants.ERROR_EXCEPTION_JSON);
+          String exMsg = (String)
+              json.get(KMSRESTConstants.ERROR_MESSAGE_JSON);
+          try {
+            ClassLoader cl = KMSClientProvider.class.getClassLoader();
+            Class klass = cl.loadClass(exClass);
+            Constructor constr = klass.getConstructor(String.class);
+            toThrow = (Exception) constr.newInstance(exMsg);
+          } catch (Exception ex) {
+            toThrow = new IOException(MessageFormat.format(
+                "HTTP status [{0}], {1}", status, conn.getResponseMessage()));
+          }
+        } else {
           toThrow = new IOException(MessageFormat.format(
               "HTTP status [{0}], {1}", status, conn.getResponseMessage()));
         }

Modified: hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSAuthenticationFilter.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSAuthenticationFilter.java?rev=1619552&r1=1619551&r2=1619552&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSAuthenticationFilter.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/main/java/org/apache/hadoop/crypto/key/kms/server/KMSAuthenticationFilter.java
Thu Aug 21 19:00:06 2014
@@ -75,6 +75,17 @@ public class KMSAuthenticationFilter
     return props;
   }
 
+  protected Configuration getProxyuserConfiguration(FilterConfig filterConfig) {
+    Map<String, String> proxyuserConf = KMSWebApp.getConfiguration().
+        getValByRegex("hadoop\\.kms\\.proxyuser\\.");
+    Configuration conf = new Configuration(false);
+    for (Map.Entry<String, String> entry : proxyuserConf.entrySet()) {
+      conf.set(entry.getKey().substring("hadoop.kms.".length()),
+          entry.getValue());
+    }
+    return conf;
+  }
+
   private static class KMSResponse extends HttpServletResponseWrapper {
     public int statusCode;
     public String msg;

Modified: hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/site/apt/index.apt.vm
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/site/apt/index.apt.vm?rev=1619552&r1=1619551&r2=1619552&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/site/apt/index.apt.vm
(original)
+++ hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/site/apt/index.apt.vm
Thu Aug 21 19:00:06 2014
@@ -195,6 +195,46 @@ hadoop-${project.version} $ sbin/kms.sh 
   NOTE: You need to restart the KMS for the configuration changes to take
   effect.
 
+*** KMS Proxyuser Configuration
+
+  Each proxyusers must be configured in <<<etc/hadoop/kms-site.xml>>> using
the
+  following properties:
+
++---+
+  <property>
+    <name>hadoop.kms.proxyusers.#USER#.users</name>
+    <value>*</value>
+  </property>
+
+  <property>
+    <name>hadoop.kms.proxyusers.#USER#.groups</name>
+    <value>*</value>
+  </property>
+
+  <property>
+    <name>hadoop.kms.proxyusers.#USER#.hosts</name>
+    <value>*</value>
+  </property>
++---+
+
+  <<<#USER#>>> is the username of the proxyuser to configure.
+
+  The <<<users>>> property indicates the users that can be impersonated.
+
+  The <<<groups>>> property indicates the groups users being impersonated
must
+  belong to.
+
+  At least one of the <<<users>>> or <<<groups>>> properties
must be defined.
+  If both are specified, then the configured proxyuser will be able to
+  impersonate and user in the <<<users>>> list and any user belonging to
one of
+  the groups in the <<<groups>>> list.
+
+  The <<<hosts>>> property indicates from which host the proxyuser can
make
+  impersonation requests.
+
+  If <<<users>>>, <<<groups>>> or <<<hosts>>>
has a <<<*>>>, it means there are
+  no restrictions for the proxyuser regarding users, groups or hosts.
+
 *** KMS over HTTPS (SSL)
 
   To configure KMS to work over HTTPS the following 2 properties must be

Modified: hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMS.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMS.java?rev=1619552&r1=1619551&r2=1619552&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMS.java
(original)
+++ hadoop/common/branches/branch-2/hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMS.java
Thu Aug 21 19:00:06 2014
@@ -33,6 +33,7 @@ import org.apache.hadoop.security.author
 import org.apache.hadoop.security.ssl.KeyStoreTestUtil;
 import org.junit.AfterClass;
 import org.junit.Assert;
+import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.mortbay.jetty.Connector;
@@ -71,6 +72,13 @@ import java.util.concurrent.Callable;
 
 public class TestKMS {
 
+  @Before
+  public void cleanUp() {
+    // resetting kerberos security
+    Configuration conf = new Configuration();
+    UserGroupInformation.setConfiguration(conf);
+  }
+
   public static File getTestDir() throws Exception {
     File file = new File("dummy");
     file = file.getAbsoluteFile();
@@ -261,6 +269,7 @@ public class TestKMS {
     principals.add("HTTP/localhost");
     principals.add("client");
     principals.add("client/host");
+    principals.add("client1");
     for (KMSACLs.Type type : KMSACLs.Type.values()) {
       principals.add(type.toString());
     }
@@ -290,7 +299,9 @@ public class TestKMS {
     try {
       loginContext.login();
       subject = loginContext.getSubject();
-      return Subject.doAs(subject, action);
+      UserGroupInformation ugi =
+          UserGroupInformation.getUGIFromSubject(subject);
+      return ugi.doAs(action);
     } finally {
       loginContext.logout();
     }
@@ -298,8 +309,13 @@ public class TestKMS {
 
   public void testStartStop(final boolean ssl, final boolean kerberos)
       throws Exception {
+    Configuration conf = new Configuration();
+    if (kerberos) {
+      conf.set("hadoop.security.authentication", "kerberos");
+    }
+    UserGroupInformation.setConfiguration(conf);
     File testDir = getTestDir();
-    Configuration conf = createBaseKMSConf(testDir);
+    conf = createBaseKMSConf(testDir);
 
     final String keystore;
     final String password;
@@ -327,18 +343,18 @@ public class TestKMS {
     runServer(keystore, password, testDir, new KMSCallable() {
       @Override
       public Void call() throws Exception {
-        Configuration conf = new Configuration();
+        final Configuration conf = new Configuration();
         URL url = getKMSUrl();
         Assert.assertEquals(keystore != null,
             url.getProtocol().equals("https"));
-        URI uri = createKMSUri(getKMSUrl());
-        final KeyProvider kp = new KMSClientProvider(uri, conf);
+        final URI uri = createKMSUri(getKMSUrl());
 
         if (kerberos) {
           for (String user : new String[]{"client", "client/host"}) {
             doAs(user, new PrivilegedExceptionAction<Void>() {
               @Override
               public Void run() throws Exception {
+                final KeyProvider kp = new KMSClientProvider(uri, conf);
                 // getKeys() empty
                 Assert.assertTrue(kp.getKeys().isEmpty());
                 return null;
@@ -346,6 +362,7 @@ public class TestKMS {
             });
           }
         } else {
+          KeyProvider kp = new KMSClientProvider(uri, conf);
           // getKeys() empty
           Assert.assertTrue(kp.getKeys().isEmpty());
         }
@@ -376,8 +393,11 @@ public class TestKMS {
 
   @Test
   public void testKMSProvider() throws Exception {
+    Configuration conf = new Configuration();
+    conf.set("hadoop.security.authentication", "kerberos");
+    UserGroupInformation.setConfiguration(conf);
     File confDir = getTestDir();
-    Configuration conf = createBaseKMSConf(confDir);
+    conf = createBaseKMSConf(confDir);
     writeConf(confDir, conf);
 
     runServer(null, null, confDir, new KMSCallable() {
@@ -589,8 +609,11 @@ public class TestKMS {
 
   @Test
   public void testACLs() throws Exception {
+    Configuration conf = new Configuration();
+    conf.set("hadoop.security.authentication", "kerberos");
+    UserGroupInformation.setConfiguration(conf);
     final File testDir = getTestDir();
-    Configuration conf = createBaseKMSConf(testDir);
+    conf = createBaseKMSConf(testDir);
     conf.set("hadoop.kms.authentication.type", "kerberos");
     conf.set("hadoop.kms.authentication.kerberos.keytab",
         keytab.getAbsolutePath());
@@ -626,7 +649,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             try {
               kp.createKey("k", new byte[16], new KeyProvider.Options(conf));
@@ -634,7 +657,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             try {
               kp.rollNewVersion("k");
@@ -642,7 +665,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             try {
               kp.rollNewVersion("k", new byte[16]);
@@ -650,7 +673,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             try {
               kp.getKeys();
@@ -658,7 +681,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             try {
               kp.getKeysMetadata("k");
@@ -666,7 +689,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             try {
               // we are using JavaKeyStoreProvider for testing, so we know how
@@ -676,7 +699,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             try {
               kp.getCurrentKey("k");
@@ -684,7 +707,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             try {
               kp.getMetadata("k");
@@ -692,7 +715,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             try {
               kp.getKeyVersions("k");
@@ -700,7 +723,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
 
             return null;
@@ -716,7 +739,7 @@ public class TestKMS {
                   new KeyProvider.Options(conf));
               Assert.assertNull(kv.getMaterial());
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -729,7 +752,7 @@ public class TestKMS {
             try {
               kp.deleteKey("k0");
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -744,7 +767,7 @@ public class TestKMS {
                   new KeyProvider.Options(conf));
               Assert.assertNull(kv.getMaterial());
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -758,7 +781,7 @@ public class TestKMS {
               KeyProvider.KeyVersion kv = kp.rollNewVersion("k1");
               Assert.assertNull(kv.getMaterial());
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -773,7 +796,7 @@ public class TestKMS {
                   kp.rollNewVersion("k1", new byte[16]);
               Assert.assertNull(kv.getMaterial());
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -823,7 +846,7 @@ public class TestKMS {
                       createKeyProviderCryptoExtension(kp);
               kpCE.decryptEncryptedKey(encKv);
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -836,7 +859,7 @@ public class TestKMS {
             try {
               kp.getKeys();
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -850,7 +873,7 @@ public class TestKMS {
               kp.getMetadata("k1");
               kp.getKeysMetadata("k1");
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -879,7 +902,7 @@ public class TestKMS {
             } catch (AuthorizationException ex) {
               //NOP
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
 
             return null;
@@ -893,8 +916,11 @@ public class TestKMS {
 
   @Test
   public void testServicePrincipalACLs() throws Exception {
+    Configuration conf = new Configuration();
+    conf.set("hadoop.security.authentication", "kerberos");
+    UserGroupInformation.setConfiguration(conf);
     File testDir = getTestDir();
-    Configuration conf = createBaseKMSConf(testDir);
+    conf = createBaseKMSConf(testDir);
     conf.set("hadoop.kms.authentication.type", "kerberos");
     conf.set("hadoop.kms.authentication.kerberos.keytab",
         keytab.getAbsolutePath());
@@ -912,18 +938,19 @@ public class TestKMS {
       public Void call() throws Exception {
         final Configuration conf = new Configuration();
         conf.setInt(KeyProvider.DEFAULT_BITLENGTH_NAME, 128);
-        URI uri = createKMSUri(getKMSUrl());
-        final KeyProvider kp = new KMSClientProvider(uri, conf);
+        conf.setInt(KeyProvider.DEFAULT_BITLENGTH_NAME, 64);
+        final URI uri = createKMSUri(getKMSUrl());
 
         doAs("client", new PrivilegedExceptionAction<Void>() {
           @Override
           public Void run() throws Exception {
             try {
+              KeyProvider kp = new KMSClientProvider(uri, conf);
               KeyProvider.KeyVersion kv = kp.createKey("ck0",
                   new KeyProvider.Options(conf));
               Assert.assertNull(kv.getMaterial());
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -933,11 +960,12 @@ public class TestKMS {
           @Override
           public Void run() throws Exception {
             try {
+              KeyProvider kp = new KMSClientProvider(uri, conf);
               KeyProvider.KeyVersion kv = kp.createKey("ck1",
                   new KeyProvider.Options(conf));
               Assert.assertNull(kv.getMaterial());
             } catch (Exception ex) {
-              Assert.fail(ex.toString());
+              Assert.fail(ex.getMessage());
             }
             return null;
           }
@@ -1014,8 +1042,11 @@ public class TestKMS {
 
   @Test
   public void testDelegationTokenAccess() throws Exception {
+    Configuration conf = new Configuration();
+    conf.set("hadoop.security.authentication", "kerberos");
+    UserGroupInformation.setConfiguration(conf);
     final File testDir = getTestDir();
-    Configuration conf = createBaseKMSConf(testDir);
+    conf = createBaseKMSConf(testDir);
     conf.set("hadoop.kms.authentication.type", "kerberos");
     conf.set("hadoop.kms.authentication.kerberos.keytab",
         keytab.getAbsolutePath());
@@ -1076,4 +1107,74 @@ public class TestKMS {
     });
   }
 
+  @Test
+  public void testProxyUser() throws Exception {
+    Configuration conf = new Configuration();
+    conf.set("hadoop.security.authentication", "kerberos");
+    UserGroupInformation.setConfiguration(conf);
+    final File testDir = getTestDir();
+    conf = createBaseKMSConf(testDir);
+    conf.set("hadoop.kms.authentication.type", "kerberos");
+    conf.set("hadoop.kms.authentication.kerberos.keytab",
+        keytab.getAbsolutePath());
+    conf.set("hadoop.kms.authentication.kerberos.principal", "HTTP/localhost");
+    conf.set("hadoop.kms.authentication.kerberos.name.rules", "DEFAULT");
+    conf.set("hadoop.kms.proxyuser.client.users", "foo");
+    conf.set("hadoop.kms.proxyuser.client.hosts", "*");
+    writeConf(testDir, conf);
+
+    runServer(null, null, testDir, new KMSCallable() {
+      @Override
+      public Void call() throws Exception {
+        final Configuration conf = new Configuration();
+        conf.setInt(KeyProvider.DEFAULT_BITLENGTH_NAME, 64);
+        final URI uri = createKMSUri(getKMSUrl());
+
+        // proxyuser client using kerberos credentials
+        UserGroupInformation clientUgi = UserGroupInformation.
+            loginUserFromKeytabAndReturnUGI("client", keytab.getAbsolutePath());
+        clientUgi.doAs(new PrivilegedExceptionAction<Void>() {
+          @Override
+          public Void run() throws Exception {
+            final KeyProvider kp = new KMSClientProvider(uri, conf);
+            kp.createKey("kAA", new KeyProvider.Options(conf));
+
+            // authorized proxyuser
+            UserGroupInformation fooUgi =
+                UserGroupInformation.createRemoteUser("foo");
+            fooUgi.doAs(new PrivilegedExceptionAction<Void>() {
+              @Override
+              public Void run() throws Exception {
+                Assert.assertNotNull(kp.createKey("kBB",
+                    new KeyProvider.Options(conf)));
+                return null;
+              }
+            });
+
+            // unauthorized proxyuser
+            UserGroupInformation foo1Ugi =
+                UserGroupInformation.createRemoteUser("foo1");
+            foo1Ugi.doAs(new PrivilegedExceptionAction<Void>() {
+              @Override
+              public Void run() throws Exception {
+                try {
+                  kp.createKey("kCC", new KeyProvider.Options(conf));
+                  Assert.fail();
+                } catch (AuthorizationException ex) {
+                  // OK
+                } catch (Exception ex) {
+                  Assert.fail(ex.getMessage());
+                }
+                return null;
+              }
+            });
+            return null;
+          }
+        });
+
+        return null;
+      }
+    });
+  }
+
 }



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