RequestProxyAuthentication.java revision d42abb2fd917184764daf22f5f299e848b8701d7 
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
32package org.apache.http.client.protocol;
33
34import java.io.IOException;
35
36import org.apache.commons.logging.Log;
37import org.apache.commons.logging.LogFactory;
38import org.apache.http.HttpException;
39import org.apache.http.HttpRequest;
40import org.apache.http.HttpRequestInterceptor;
41import org.apache.http.auth.AUTH;
42import org.apache.http.auth.AuthScheme;
43import org.apache.http.auth.AuthState;
44import org.apache.http.auth.AuthenticationException;
45import org.apache.http.auth.Credentials;
46import 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
60public class RequestProxyAuthentication implements HttpRequestInterceptor {
61
62    private final Log log = LogFactory.getLog(getClass());
63
64    public RequestProxyAuthentication() {
65        super();
66    }
67
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