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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  
28  package org.apache.http.impl.client;
29  
30  import java.util.List;
31  import java.util.Map;
32  
33  import org.apache.http.Header;
34  import org.apache.http.HttpResponse;
35  import org.apache.http.HttpStatus;
36  import org.apache.http.annotation.Immutable;
37  import org.apache.http.auth.AUTH;
38  import org.apache.http.auth.MalformedChallengeException;
39  import org.apache.http.auth.params.AuthPNames;
40  import org.apache.http.protocol.HttpContext;
41  import org.apache.http.util.Args;
42  
43  /**
44   * Default {@link org.apache.http.client.AuthenticationHandler} implementation
45   * for target host authentication.
46   *
47   * @since 4.0
48   *
49   * @deprecated (4.2)  use {@link TargetAuthenticationStrategy}
50   */
51  @Deprecated
52  @Immutable
53  public class DefaultTargetAuthenticationHandler extends AbstractAuthenticationHandler {
54  
55      public DefaultTargetAuthenticationHandler() {
56          super();
57      }
58  
59      public boolean isAuthenticationRequested(
60              final HttpResponse response,
61              final HttpContext context) {
62          Args.notNull(response, "HTTP response");
63          final int status = response.getStatusLine().getStatusCode();
64          return status == HttpStatus.SC_UNAUTHORIZED;
65      }
66  
67      public Map<String, Header> getChallenges(
68              final HttpResponse response,
69              final HttpContext context) throws MalformedChallengeException {
70          Args.notNull(response, "HTTP response");
71          final Header[] headers = response.getHeaders(AUTH.WWW_AUTH);
72          return parseChallenges(headers);
73      }
74  
75      @Override
76      protected List<String> getAuthPreferences(
77              final HttpResponse response,
78              final HttpContext context) {
79          @SuppressWarnings("unchecked")
80          final
81          List<String> authpref = (List<String>) response.getParams().getParameter(
82                  AuthPNames.TARGET_AUTH_PREF);
83          if (authpref != null) {
84              return authpref;
85          } else {
86              return super.getAuthPreferences(response, context);
87          }
88      }
89  
90  }
91