StrictHostnameVerifier.java revision 069490a5ca2fd1988d29daf45d892f47ad665115 
1/*
2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/ssl/StrictHostnameVerifier.java $
3 * $Revision: 617642 $
4 * $Date: 2008-02-01 12:54:07 -0800 (Fri, 01 Feb 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.conn.ssl;
33
34import javax.net.ssl.SSLException;
35
36/**
37 * The Strict HostnameVerifier works the same way as Sun Java 1.4, Sun
38 * Java 5, Sun Java 6-rc.  It's also pretty close to IE6.  This
39 * implementation appears to be compliant with RFC 2818 for dealing with
40 * wildcards.
41 * <p/>
42 * The hostname must match either the first CN, or any of the subject-alts.
43 * A wildcard can occur in the CN, and in any of the subject-alts.  The
44 * one divergence from IE6 is how we only check the first CN.  IE6 allows
45 * a match against any of the CNs present.  We decided to follow in
46 * Sun Java 1.4's footsteps and only check the first CN.  (If you need
47 * to check all the CN's, feel free to write your own implementation!).
48 * <p/>
49 * A wildcard such as "*.foo.com" matches only subdomains in the same
50 * level, for example "a.foo.com".  It does not match deeper subdomains
51 * such as "a.b.foo.com".
52 *
53 * @author Julius Davies
54 */
55public class StrictHostnameVerifier extends AbstractVerifier {
56
57    public final void verify(
58            final String host,
59            final String[] cns,
60            final String[] subjectAlts) throws SSLException {
61        verify(host, cns, subjectAlts, true);
62    }
63
64    @Override
65    public final String toString() {
66        return "STRICT";
67    }
68
69}
70