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  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
Util class for Security related operations.

Jean-Francois Arcand
public final class SecurityUtil{
    private static boolean packageDefinitionEnabled =  
         System.getProperty("package.definition") == null ? false : true;
Return the SecurityManager only if Security is enabled AND package protection mechanism is enabled.
    public static boolean isPackageProtectionEnabled(){
            return true;
        return false;

Filter the specified message string for characters that are sensitive in HTML. This avoids potential attacks caused by including JavaScript codes in the request URL that is often reported in error messages.

message The message string to be filtered
    public static String filter(String message) {
        if (message == null)
            return (null);
        char content[] = new char[message.length()];
        message.getChars(0, message.length(), content, 0);
        StringBuilder result = new StringBuilder(content.length + 50);
        for (int i = 0; i < content.lengthi++) {
            switch (content[i]) {
            case '<':
            case '>':
            case '&':
            case '"':
        return (result.toString());
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