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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.annotation.Immutable;
34  
35  import org.apache.http.Header;
36  import org.apache.http.HttpResponse;
37  import org.apache.http.HttpStatus;
38  import org.apache.http.auth.AUTH;
39  import org.apache.http.auth.MalformedChallengeException;
40  import org.apache.http.auth.params.AuthPNames;
41  import org.apache.http.client.AuthenticationHandler;
42  import org.apache.http.protocol.HttpContext;
43  
44  /**
45   * Default {@link AuthenticationHandler} implementation for proxy host
46   * authentication.
47   *
48   * @since 4.0
49   *
50   * @deprecated (4.2)  use {@link ProxyAuthenticationStrategy}
51   */
52  @Deprecated 
53  @Immutable
54  public class DefaultProxyAuthenticationHandler extends AbstractAuthenticationHandler {
55  
56      public DefaultProxyAuthenticationHandler() {
57          super();
58      }
59  
60      public boolean isAuthenticationRequested(
61              final HttpResponse response,
62              final HttpContext context) {
63          if (response == null) {
64              throw new IllegalArgumentException("HTTP response may not be null");
65          }
66          int status = response.getStatusLine().getStatusCode();
67          return status == HttpStatus.SC_PROXY_AUTHENTICATION_REQUIRED;
68      }
69  
70      public Map<String, Header> getChallenges(
71              final HttpResponse response,
72              final HttpContext context) throws MalformedChallengeException {
73          if (response == null) {
74              throw new IllegalArgumentException("HTTP response may not be null");
75          }
76          Header[] headers = response.getHeaders(AUTH.PROXY_AUTH);
77          return parseChallenges(headers);
78      }
79  
80      @Override
81      protected List<String> getAuthPreferences(
82              final HttpResponse response,
83              final HttpContext context) {
84          @SuppressWarnings("unchecked")
85          List<String> authpref = (List<String>) response.getParams().getParameter(
86                  AuthPNames.PROXY_AUTH_PREF);
87          if (authpref != null) {
88              return authpref;
89          } else {
90              return super.getAuthPreferences(response, context);
91          }
92      }
93  
94  }