1/*
2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/impl/client/DefaultTargetAuthenticationHandler.java $
3 * $Revision: 603615 $
4 * $Date: 2007-12-12 06:03:21 -0800 (Wed, 12 Dec 2007) $
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.impl.client;
33
34import java.util.Map;
35
36import org.apache.http.Header;
37import org.apache.http.HttpResponse;
38import org.apache.http.HttpStatus;
39import org.apache.http.auth.AUTH;
40import org.apache.http.auth.MalformedChallengeException;
41import org.apache.http.protocol.HttpContext;
42
43/**
44 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
45 */
46public class DefaultTargetAuthenticationHandler extends AbstractAuthenticationHandler {
47
48    public DefaultTargetAuthenticationHandler() {
49        super();
50    }
51
52    public boolean isAuthenticationRequested(
53            final HttpResponse response,
54            final HttpContext context) {
55        if (response == null) {
56            throw new IllegalArgumentException("HTTP response may not be null");
57        }
58        int status = response.getStatusLine().getStatusCode();
59        return status == HttpStatus.SC_UNAUTHORIZED;
60    }
61
62    public Map<String, Header> getChallenges(
63            final HttpResponse response,
64            final HttpContext context) throws MalformedChallengeException {
65        if (response == null) {
66            throw new IllegalArgumentException("HTTP response may not be null");
67        }
68        Header[] headers = response.getHeaders(AUTH.WWW_AUTH);
69        return parseChallenges(headers);
70    }
71
72}
73