1 /**
2 * This file Copyright (c) 2003-2010 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.cms.security;
35
36 import info.magnolia.cms.filters.AbstractMgnlFilter;
37 import info.magnolia.cms.security.auth.callback.HttpClientCallback;
38
39 import javax.servlet.FilterChain;
40 import javax.servlet.ServletException;
41 import javax.servlet.http.HttpServletRequest;
42 import javax.servlet.http.HttpServletResponse;
43 import java.io.IOException;
44
45 /**
46 * Provides basic infrastructure to authenticate request using form or basic realm
47 *
48 * @author Sameer Charles
49 * $Id: BaseSecurityFilter.java 32667 2010-03-13 00:37:06Z gjoseph $
50 */
51 public abstract class BaseSecurityFilter extends AbstractMgnlFilter {
52
53 private HttpClientCallback clientCallback;
54
55 /**
56 * Continue with the magnolia defined filter chain if isAllowed returns true
57 * else send an authentication request to the client as configured
58 */
59 public void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, ServletException {
60 if (isAllowed(request, response)) {
61 chain.doFilter(request, response);
62 } else {
63 doAuthenticate(request, response);
64 }
65 }
66
67 protected abstract boolean isAllowed(HttpServletRequest request, HttpServletResponse response) throws IOException;
68
69 /**
70 * In most cases this will provide a standard login mechanism, override this to support
71 * other login strategies
72 */
73 protected void doAuthenticate(HttpServletRequest request, HttpServletResponse response) {
74 /*
75 HttpSession httpsession = request.getSession(false);
76 if (httpsession != null) {
77 httpsession.invalidate();
78 }
79 */
80 getClientCallback().handle(request, response);
81 }
82
83 public HttpClientCallback getClientCallback() {
84 return clientCallback;
85 }
86
87 public void setClientCallback(HttpClientCallback clientCallback) {
88 this.clientCallback = clientCallback;
89 }
90
91 }