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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| HTMLFilter.java | 0% | 0% | 0% | 0% |
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| 1 | /* | |
| 2 | * Copyright 2004 The Apache Software Foundation | |
| 3 | * | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 | * you may not use this file except in compliance with the License. | |
| 6 | * You may obtain a copy of the License at | |
| 7 | * | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 | * | |
| 10 | * Unless required by applicable law or agreed to in writing, software | |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 | * See the License for the specific language governing permissions and | |
| 14 | * limitations under the License. | |
| 15 | */ | |
| 16 | ||
| 17 | package util; | |
| 18 | ||
| 19 | /** | |
| 20 | * HTML filter utility. | |
| 21 | * | |
| 22 | * @author Craig R. McClanahan | |
| 23 | * @author Tim Tye | |
| 24 | * @version $Revision: 267129 $ $Date: 2004-03-18 08:40:35 -0800 (Thu, 18 Mar 2004) $ | |
| 25 | */ | |
| 26 | ||
| 27 | public final class HTMLFilter { | |
| 28 | ||
| 29 | ||
| 30 | /** | |
| 31 | * Filter the specified message string for characters that are sensitive | |
| 32 | * in HTML. This avoids potential attacks caused by including JavaScript | |
| 33 | * codes in the request URL that is often reported in error messages. | |
| 34 | * | |
| 35 | * @param message The message string to be filtered | |
| 36 | */ | |
| 37 | 0 | public static String filter(String message) { |
| 38 | ||
| 39 | 0 | if (message == null) |
| 40 | 0 | return (null); |
| 41 | ||
| 42 | 0 | char content[] = new char[message.length()]; |
| 43 | 0 | message.getChars(0, message.length(), content, 0); |
| 44 | 0 | StringBuffer result = new StringBuffer(content.length + 50); |
| 45 | 0 | for (int i = 0; i < content.length; i++) { |
| 46 | 0 | switch (content[i]) { |
| 47 | 0 | case '<': |
| 48 | 0 | result.append("<"); |
| 49 | 0 | break; |
| 50 | 0 | case '>': |
| 51 | 0 | result.append(">"); |
| 52 | 0 | break; |
| 53 | 0 | case '&': |
| 54 | 0 | result.append("&"); |
| 55 | 0 | break; |
| 56 | 0 | case '"': |
| 57 | 0 | result.append("""); |
| 58 | 0 | break; |
| 59 | 0 | default: |
| 60 | 0 | result.append(content[i]); |
| 61 | } | |
| 62 | } | |
| 63 | 0 | return (result.toString()); |
| 64 | ||
| 65 | } | |
| 66 | ||
| 67 | ||
| 68 | } | |
| 69 |
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