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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.client.protocol;
29  
30  import java.io.IOException;
31  
32  import org.apache.http.HttpException;
33  import org.apache.http.HttpRequest;
34  import org.apache.http.annotation.Immutable;
35  import org.apache.http.auth.AUTH;
36  import org.apache.http.auth.AuthState;
37  import org.apache.http.conn.HttpRoutedConnection;
38  import org.apache.http.conn.routing.HttpRoute;
39  import org.apache.http.protocol.ExecutionContext;
40  import org.apache.http.protocol.HttpContext;
41  import org.apache.http.util.Args;
42  
43  /**
44   * Generates authentication header for the proxy host, if required,
45   * based on the actual state of the HTTP authentication context.
46   *
47   * @since 4.0
48   *
49   * @deprecated (4.3) use {@link org.apache.http.impl.auth.HttpAuthenticator}.
50   */
51  @Deprecated
52  @Immutable
53  public class RequestProxyAuthentication extends RequestAuthenticationBase {
54  
55      public RequestProxyAuthentication() {
56          super();
57      }
58  
59      public void process(final HttpRequest request, final HttpContext context)
60              throws HttpException, IOException {
61          Args.notNull(request, "HTTP request");
62          Args.notNull(context, "HTTP context");
63  
64          if (request.containsHeader(AUTH.PROXY_AUTH_RESP)) {
65              return;
66          }
67  
68          final HttpRoutedConnection conn = (HttpRoutedConnection) context.getAttribute(
69                  ExecutionContext.HTTP_CONNECTION);
70          if (conn == null) {
71              this.log.debug("HTTP connection not set in the context");
72              return;
73          }
74          final HttpRoute route = conn.getRoute();
75          if (route.isTunnelled()) {
76              return;
77          }
78  
79          // Obtain authentication state
80          final AuthState authState = (AuthState) context.getAttribute(
81                  ClientContext.PROXY_AUTH_STATE);
82          if (authState == null) {
83              this.log.debug("Proxy auth state not set in the context");
84              return;
85          }
86          if (this.log.isDebugEnabled()) {
87              this.log.debug("Proxy auth state: " + authState.getState());
88          }
89          process(authState, request, context);
90      }
91  
92  }