1 /**
2 * This file Copyright (c) 2008-2015 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.voting.voters;
35
36 import info.magnolia.context.MgnlContext;
37
38 import java.util.ArrayList;
39 import java.util.List;
40
41 import javax.servlet.http.HttpServletResponse;
42
43 import org.apache.commons.lang.StringUtils;
44
45 /**
46 * A voter which checks the content type set on the <strong>response</strong>
47 * object against a list of allowed and/or rejected content types.
48 */
49 public class ResponseContentTypeVoter extends AbstractBoolVoter {
50 private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(ResponseContentTypeVoter.class);
51
52 private final List<String> allowed = new ArrayList<String>();
53 private final List<String> rejected = new ArrayList<String>();
54
55 public List<String> getAllowed() {
56 return allowed;
57 }
58
59 public void setAllowed(List<String> allowed) {
60 this.allowed.addAll(allowed);
61 }
62
63 public void addAllowed(String contentType) {
64 allowed.add(contentType);
65 }
66
67 public List<String> getRejected() {
68 return rejected;
69 }
70
71 public void setRejected(List<String> rejected) {
72 this.rejected.addAll(rejected);
73 }
74
75 public void addRejected(String contentType) {
76 rejected.add(contentType);
77 }
78
79 @Override
80 protected boolean boolVote(Object value) {
81 final HttpServletResponse response;
82 if (value instanceof HttpServletResponse) {
83 response = (HttpServletResponse) value;
84 } else {
85 if (MgnlContext.isWebContext()) {
86 response = MgnlContext.getWebContext().getResponse();
87 } else {
88 return false;
89 }
90 }
91
92 // strip the encoding off of the content type:
93 final String contentType = StringUtils.substringBefore(response.getContentType(), ";");
94 if (contentType == null) {
95 log.warn("No content type set on the response, can't vote.");
96 return false;
97 }
98 if (allowed.size() > 0 && !allowed.contains(contentType)) {
99 return false;
100 }
101 if (rejected.size() > 0 && rejected.contains(contentType)) {
102 return false;
103 }
104 return true;
105 }
106 }