| XSSUtil.java |
1 /**
2 * Copyright (c) 2000-2007 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.util;
24
25 import com.liferay.portal.kernel.util.GetterUtil;
26 import com.liferay.portal.kernel.util.StringPool;
27
28 import java.util.regex.Matcher;
29 import java.util.regex.Pattern;
30
31 /**
32 * <a href="XSSUtil.java.html"><b><i>View Source</i></b></a>
33 *
34 * @author Brian Wing Shun Chan
35 * @author Clarence Shen
36 *
37 */
38 public class XSSUtil {
39
40 public static final String XSS_REGEXP_PATTERN = GetterUtil.getString(
41 SystemProperties.get(XSSUtil.class.getName() + ".regexp.pattern"));
42
43 public static final Pattern XSS_PATTERN =
44 Pattern.compile(XSS_REGEXP_PATTERN);
45
46 public static String strip(String text) {
47 if (text == null) {
48 return null;
49 }
50
51 CharSequence sequence = text.subSequence(0, text.length());
52
53 Matcher matcher = XSS_PATTERN.matcher(sequence);
54
55 return matcher.replaceAll(StringPool.BLANK);
56 }
57
58 }