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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,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  package org.apache.hc.client5.http.impl.auth;
28  
29  import org.apache.hc.client5.http.DnsResolver;
30  import org.apache.hc.client5.http.auth.StandardAuthScheme;
31  import org.apache.hc.core5.annotation.Experimental;
32  import org.ietf.jgss.GSSException;
33  import org.ietf.jgss.Oid;
34  
35  /**
36   * Kerberos authentication scheme.
37   * <p>
38   * Please note this class is considered experimental and may be discontinued or removed
39   * in the future.
40   * </p>
41   *
42   * @since 4.2
43   *
44   * @deprecated Do not use. The GGS based experimental authentication schemes are no longer
45   * supported. Consider using Basic or Bearer authentication with TLS instead.
46   *
47   * @see BasicScheme
48   * @see BearerScheme
49   */
50  @Deprecated
51  @Experimental
52  public class KerberosScheme extends GGSSchemeBase {
53  
54      private static final String KERBEROS_OID = "1.2.840.113554.1.2.2";
55  
56      /**
57       * @since 5.0
58       */
59      public KerberosScheme(final org.apache.hc.client5.http.auth.KerberosConfig config, final DnsResolver dnsResolver) {
60          super(config, dnsResolver);
61      }
62  
63      public KerberosScheme() {
64          super();
65      }
66  
67      @Override
68      public String getName() {
69          return StandardAuthScheme.KERBEROS;
70      }
71  
72      @Override
73      protected byte[] generateToken(final byte[] input, final String serviceName, final String authServer) throws GSSException {
74          return generateGSSToken(input, new Oid(KERBEROS_OID), serviceName, authServer);
75      }
76  
77      @Override
78      public boolean isConnectionBased() {
79          return true;
80      }
81  
82  }