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