Source code: org/acegisecurity/wrapper/SecurityContextHolderAwareRequestFilter.java
1 /* Copyright 2004, 2005 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.acegisecurity.wrapper;
17
18 import java.io.IOException;
19
20 import javax.servlet.Filter;
21 import javax.servlet.FilterChain;
22 import javax.servlet.FilterConfig;
23 import javax.servlet.ServletException;
24 import javax.servlet.ServletRequest;
25 import javax.servlet.ServletResponse;
26 import javax.servlet.http.HttpServletRequest;
27
28
29 /**
30 * A <code>Filter</code> which populates the <code>ServletRequest</code> with
31 * an {@link SecurityContextHolderAwareRequestWrapper}.
32 *
33 * @author Orlando Garcia Carmona
34 * @version $Id: SecurityContextHolderAwareRequestFilter.java,v 1.2 2005/11/17 00:56:30 benalex Exp $
35 */
36 public class SecurityContextHolderAwareRequestFilter implements Filter {
37 //~ Methods ================================================================
38
39 public void destroy() {}
40
41 public void doFilter(ServletRequest servletRequest,
42 ServletResponse servletResponse, FilterChain filterChain)
43 throws IOException, ServletException {
44 HttpServletRequest request = (HttpServletRequest) servletRequest;
45
46 if (!(request instanceof SecurityContextHolderAwareRequestWrapper)) {
47 request = new SecurityContextHolderAwareRequestWrapper(request);
48 }
49
50 filterChain.doFilter(request, servletResponse);
51 }
52
53 public void init(FilterConfig filterConfig) throws ServletException {}
54 }