1 /*
2  * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/client/protocol/RequestProxyAuthentication.java $
3  * $Revision: 673450 $
4  * $Date: 2008-07-02 10:35:05 -0700 (Wed, 02 Jul 2008) $
5  *
6  * ====================================================================
7  * Licensed to the Apache Software Foundation (ASF) under one
8  * or more contributor license agreements.  See the NOTICE file
9  * distributed with this work for additional information
10  * regarding copyright ownership.  The ASF licenses this file
11  * to you under the Apache License, Version 2.0 (the
12  * "License"); you may not use this file except in compliance
13  * with the License.  You may obtain a copy of the License at
14  *
15  *   http://www.apache.org/licenses/LICENSE-2.0
16  *
17  * Unless required by applicable law or agreed to in writing,
18  * software distributed under the License is distributed on an
19  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
20  * KIND, either express or implied.  See the License for the
21  * specific language governing permissions and limitations
22  * under the License.
23  * ====================================================================
24  *
25  * This software consists of voluntary contributions made by many
26  * individuals on behalf of the Apache Software Foundation.  For more
27  * information on the Apache Software Foundation, please see
28  * <http://www.apache.org/>.
29  *
30  */
31 
32 package org.apache.http.client.protocol;
33 
34 import java.io.IOException;
35 
36 import org.apache.commons.logging.Log;
37 import org.apache.commons.logging.LogFactory;
38 import org.apache.http.HttpException;
39 import org.apache.http.HttpRequest;
40 import org.apache.http.HttpRequestInterceptor;
41 import org.apache.http.auth.AUTH;
42 import org.apache.http.auth.AuthScheme;
43 import org.apache.http.auth.AuthState;
44 import org.apache.http.auth.AuthenticationException;
45 import org.apache.http.auth.Credentials;
46 import org.apache.http.protocol.HttpContext;
47 
48 /**
49  * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
50  *
51  * @version $Revision: 673450 $
52  *
53  * @since 4.0
54  *
55  * @deprecated Please use {@link java.net.URL#openConnection} instead.
56  *     Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a>
57  *     for further details.
58  */
59 @Deprecated
60 public class RequestProxyAuthentication implements HttpRequestInterceptor {
61 
62     private final Log log = LogFactory.getLog(getClass());
63 
RequestProxyAuthentication()64     public RequestProxyAuthentication() {
65         super();
66     }
67 
process(final HttpRequest request, final HttpContext context)68     public void process(final HttpRequest request, final HttpContext context)
69             throws HttpException, IOException {
70         if (request == null) {
71             throw new IllegalArgumentException("HTTP request may not be null");
72         }
73         if (context == null) {
74             throw new IllegalArgumentException("HTTP context may not be null");
75         }
76 
77         if (request.containsHeader(AUTH.PROXY_AUTH_RESP)) {
78             return;
79         }
80 
81         // Obtain authentication state
82         AuthState authState = (AuthState) context.getAttribute(
83                 ClientContext.PROXY_AUTH_STATE);
84         if (authState == null) {
85             return;
86         }
87 
88         AuthScheme authScheme = authState.getAuthScheme();
89         if (authScheme == null) {
90             return;
91         }
92 
93         Credentials creds = authState.getCredentials();
94         if (creds == null) {
95             this.log.debug("User credentials not available");
96             return;
97         }
98         if (authState.getAuthScope() != null || !authScheme.isConnectionBased()) {
99             try {
100                 request.addHeader(authScheme.authenticate(creds, request));
101             } catch (AuthenticationException ex) {
102                 if (this.log.isErrorEnabled()) {
103                     this.log.error("Proxy authentication error: " + ex.getMessage());
104                 }
105             }
106         }
107     }
108 
109 }
110