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1 // Copyright 2008 The Apache Software Foundation
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 package org.apache.tapestry5.internal.services;
16
17 import org.apache.tapestry5.services.HttpServletRequestFilter;
18 import org.apache.tapestry5.services.HttpServletRequestHandler;
19
20 import javax.servlet.http.HttpServletRequest;
21 import javax.servlet.http.HttpServletResponse;
22 import java.io.IOException;
23 import java.util.Collection;
24 import java.util.regex.Pattern;
25
26 public class IgnoredPathsFilter implements HttpServletRequestFilter
27 {
28 private final Pattern[] ignoredPatterns;
29
30 public IgnoredPathsFilter(Collection<String> configuration)
31 {
32 ignoredPatterns = new Pattern[configuration.size()];
33
34 int i = 0;
35
36 for (String regexp : configuration)
37 {
38 Pattern p = Pattern.compile(regexp, Pattern.CASE_INSENSITIVE);
39
40 ignoredPatterns[i++] = p;
41 }
42 }
43
44 public boolean service(HttpServletRequest request, HttpServletResponse response, HttpServletRequestHandler handler)
45 throws IOException
46 {
47 // The servlet path should be "/", and path info is everything after that.
48
49 String path = request.getServletPath();
50 String pathInfo = request.getPathInfo();
51
52 if (pathInfo != null) path += pathInfo;
53
54
55 for (Pattern p : ignoredPatterns)
56 {
57 if (p.matcher(path).matches()) return false;
58 }
59
60 // Not a match, so let it go.
61
62 return handler.service(request, response);
63 }
64 }