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Java > Open Source Codes > org > apache > jetspeed > modules > actions > MarkRefPage


1 /*
2  * Copyright 2000-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.apache.jetspeed.modules.actions;
18  
19 // Java Core Classes
20 import java.util.Enumeration;
21
22 // Jetspeed Modules
23 import org.apache.jetspeed.util.URILookup;
24
25 // Turbine Modules
26 import org.apache.turbine.modules.Action;
27 import org.apache.turbine.util.RunData;
28
29 /**
30  * Marks the referer page to enable buttons as "back"
31  *
32  * @author <A HREF="shesmer@raleigh.ibm.com">Stephan Hesmer</A>
33 */
34 public class MarkRefPage extends Action
35 {
36     public void doPerform( RunData data ) throws Exception
37     {
38         Enumeration enum = data.getRequest().getHeaderNames();
39         while (enum.hasMoreElements()) {
40             String name = (String)enum.nextElement();
41             if ("referer".equalsIgnoreCase(name)) {
42                 // check name case insensitive, because getHeader checks case-sensitive,
43 // though it is defined as case-insensitive in the servlet specification
44 String uri = data.getRequest().getHeader(name);
45                 if (uri!=null) {
46                     // remove sessionid, if exists
47 if (uri.indexOf(";jsessionid")!=-1) {
48                         uri = uri.substring(0,uri.indexOf(";jsessionid"));
49                     }
50                     // adds sessionid if necessary
51 uri = data.getResponse().encodeURL( uri );
52                     URILookup.markPage( uri, data);
53                 }
54                 break;
55             }
56         }
57     }
58
59 }
60
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