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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.Contract;
35  import org.apache.http.annotation.ThreadingBehavior;
36  import org.apache.http.auth.AUTH;
37  import org.apache.http.auth.AuthState;
38  import org.apache.http.protocol.HttpContext;
39  import org.apache.http.util.Args;
40  
41  /**
42   * Generates authentication header for the target host, if required,
43   * based on the actual state of the HTTP authentication context.
44   *
45   * @since 4.0
46   *
47   * @deprecated (4.3) use {@link org.apache.http.impl.auth.HttpAuthenticator}.
48   */
49  @Deprecated
50  @Contract(threading = ThreadingBehavior.IMMUTABLE)
51  public class RequestTargetAuthentication extends RequestAuthenticationBase {
52  
53      public RequestTargetAuthentication() {
54          super();
55      }
56  
57      @Override
58      public void process(final HttpRequest request, final HttpContext context)
59              throws HttpException, IOException {
60          Args.notNull(request, "HTTP request");
61          Args.notNull(context, "HTTP context");
62  
63          final String method = request.getRequestLine().getMethod();
64          if (method.equalsIgnoreCase("CONNECT")) {
65              return;
66          }
67  
68          if (request.containsHeader(AUTH.WWW_AUTH_RESP)) {
69              return;
70          }
71  
72          // Obtain authentication state
73          final AuthState authState = (AuthState) context.getAttribute(
74                  ClientContext.TARGET_AUTH_STATE);
75          if (authState == null) {
76              this.log.debug("Target auth state not set in the context");
77              return;
78          }
79          if (this.log.isDebugEnabled()) {
80              this.log.debug("Target auth state: " + authState.getState());
81          }
82          process(authState, request, context);
83      }
84  
85  }