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1   /**
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *     http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  package org.apache.hadoop.hbase.security;
20  
21  import org.apache.commons.codec.binary.Base64;
22  
23  import java.util.Map;
24  import java.util.TreeMap;
25  
26  import javax.security.sasl.Sasl;
27  
28  public class SaslUtil {
29    public static final String SASL_DEFAULT_REALM = "default";
30    public static final Map<String, String> SASL_PROPS =
31        new TreeMap<String, String>();
32    public static final int SWITCH_TO_SIMPLE_AUTH = -88;
33  
34    public static enum QualityOfProtection {
35      AUTHENTICATION("auth"),
36      INTEGRITY("auth-int"),
37      PRIVACY("auth-conf");
38  
39      public final String saslQop;
40  
41      private QualityOfProtection(String saslQop) {
42        this.saslQop = saslQop;
43      }
44  
45      public String getSaslQop() {
46        return saslQop;
47      }
48    }
49  
50    /** Splitting fully qualified Kerberos name into parts */
51    public static String[] splitKerberosName(String fullName) {
52      return fullName.split("[/@]");
53    }
54  
55    static String encodeIdentifier(byte[] identifier) {
56      return new String(Base64.encodeBase64(identifier));
57    }
58  
59    static byte[] decodeIdentifier(String identifier) {
60      return Base64.decodeBase64(identifier.getBytes());
61    }
62  
63    static char[] encodePassword(byte[] password) {
64      return new String(Base64.encodeBase64(password)).toCharArray();
65    }
66  
67    static void initSaslProperties(String rpcProtection) {
68      QualityOfProtection saslQOP = QualityOfProtection.AUTHENTICATION;
69      if (QualityOfProtection.INTEGRITY.name().toLowerCase()
70          .equals(rpcProtection)) {
71        saslQOP = QualityOfProtection.INTEGRITY;
72      } else if (QualityOfProtection.PRIVACY.name().toLowerCase().equals(
73          rpcProtection)) {
74        saslQOP = QualityOfProtection.PRIVACY;
75      }
76  
77      SaslUtil.SASL_PROPS.put(Sasl.QOP, saslQOP.getSaslQop());
78      SaslUtil.SASL_PROPS.put(Sasl.SERVER_AUTH, "true");
79    }
80  }