1 /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 package org.springframework.security.util;
17
18 import org.springframework.util.Assert;
19
20 import javax.servlet.ServletRequest;
21
22
23 /**
24 * Concrete implementation of {@link PortResolver} that obtains the port from <tt>ServletRequest.getServerPort()</tt>.
25 * <p>
26 * This class is capable of handling the IE bug which results in an
27 * incorrect URL being presented in the header subsequent to a redirect to a different scheme and port where the port
28 * is not a well-known number (ie 80 or 443). Handling involves detecting an incorrect response from
29 * <code>ServletRequest.getServerPort()</code> for the scheme (eg a HTTP request on 8443) and then determining the
30 * real server port (eg HTTP request is really on 8080). The map of valid ports is obtained from the configured
31 * {@link PortMapper}.
32 *
33 * @author Ben Alex
34 * @version $Id: PortResolverImpl.java 2458 2008-01-15 17:22:10Z luke_t $
35 */
36 public class PortResolverImpl implements PortResolver {
37 //~ Instance fields ================================================================================================
38
39 private PortMapper portMapper = new PortMapperImpl();
40
41 //~ Methods ========================================================================================================
42
43 public PortMapper getPortMapper() {
44 return portMapper;
45 }
46
47 public int getServerPort(ServletRequest request) {
48 int serverPort = request.getServerPort();
49 Integer portLookup = null;
50
51 String scheme = request.getScheme().toLowerCase();
52
53 if ("http".equals(scheme)) {
54 portLookup = portMapper.lookupHttpPort(new Integer(serverPort));
55
56 } else if ("https".equals(scheme)) {
57 portLookup = portMapper.lookupHttpsPort(new Integer(serverPort));
58 }
59
60 if (portLookup != null) {
61 // IE 6 bug
62 serverPort = portLookup.intValue();
63 }
64
65 return serverPort;
66 }
67
68 public void setPortMapper(PortMapper portMapper) {
69 Assert.notNull(portMapper, "portMapper cannot be null");
70 this.portMapper = portMapper;
71 }
72 }