/*
* SiteAction.java
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Author: Winter Lau
* http://dlog4j.sourceforge.net
*/
package com.liusoft.dlog4j;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletContext;
import org.apache.commons.lang.StringUtils;
/**
* DLOG�ڰ�ȫ�����һЩ������
* ���дʻ��/WEB-INF/conf/illegal_glossary.dat
*
* @author Winter Lau
*/
public class DLOGSecurityManager {
/**
* ��ʼ��
* @param sc
* @throws IOException
*
* @see com.liusoft.dlog4j.servlet.DLOG_ActionServlet#init()
*/
public static void init(ServletContext sc) throws IOException {
IllegalGlossary.init(sc);
}
public static void destroy(){
IllegalGlossary.destroy();
}
/**
* �����ֻ�
* @author Winter Lau
*/
public static class IllegalGlossary {
private final static String file_glossary = "/WEB-INF/conf/illegal_glossary.dat";
private static List glossary = null;
public static void init(ServletContext sc) throws IOException {
glossary = new ArrayList(1000);
if(sc!=null)
loadIllegalGlossary(sc);
}
public static void destroy(){
if(glossary!=null)
glossary.clear();
}
/**
* �������дʻ��
* @param sc
* @throws IOException
*/
private synchronized static void loadIllegalGlossary(ServletContext sc) throws IOException {
InputStream in = sc.getResourceAsStream(file_glossary);
BufferedReader reader = null;
try{
reader = new BufferedReader(new InputStreamReader(in));
do{
String line = reader.readLine();
if(line==null)
break;
glossary.add(line.trim());
}while(true);
}finally{
in.close();
}
}
/**
* �Զ������дʻ���XXX�滻
*
* @param content
* @return
*/
public static String autoGlossaryFiltrate(String content) {
if(StringUtils.isEmpty(content))
return content;
for (int i = 0; i < glossary.size(); i++) {
String word = (String)glossary.get(i);
content = StringUtils.replace(content, word, StringUtils
.repeat("X", word.length()));
}
return content;
}
/**
* �ж��Ƿ���ڷǷ�����
* @param content
* @return
*/
public static boolean existIllegalWord(String content){
if(StringUtils.isEmpty(content))
return false;
for (int i = 0; i < glossary.size(); i++) {
String word = (String) glossary.get(i);
if(content.indexOf(word)>=0)
return true;
}
return false;
}
/**
* ɾ�������д��ڵĹؼ���
* @param content
* @return
*/
public static String deleteIllegalWord(String content){
if(StringUtils.isEmpty(content))
return content;
for (int i = 0; i < glossary.size(); i++) {
String word = (String) glossary.get(i);
content = StringUtils.remove(content, word);
}
return content;
}
}
public static void main(String[] args) throws IOException{
init(null);
String text = "�л�����������ϯë�����ǽ���ë��ϯ";
System.out.println(IllegalGlossary.autoGlossaryFiltrate(text));
}
}