| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. 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 |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. For additional information regarding |
| * copyright in this work, please see the NOTICE file in the top level |
| * directory of this distribution. |
| */ |
| |
| package org.apache.roller.weblogger.ui.core.filters; |
| |
| import java.io.IOException; |
| import javax.servlet.Filter; |
| import javax.servlet.FilterChain; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.roller.weblogger.util.IPBanList; |
| |
| |
| /** |
| * Simple IP restriction filter. Denied clients get a 404 reponse. |
| * |
| * @web.filter name="IPBanFilter" |
| */ |
| public class IPBanFilter implements Filter { |
| |
| private static Log log = LogFactory.getLog(IPBanFilter.class); |
| |
| |
| public void init(FilterConfig filterConfig) throws ServletException { |
| |
| log.info("INIT IPBanFilter"); |
| } |
| |
| |
| public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) |
| throws IOException, ServletException { |
| |
| HttpServletRequest request = (HttpServletRequest) req; |
| HttpServletResponse response = (HttpServletResponse) res; |
| |
| // check if client is allowed |
| if(IPBanList.getInstance().isBanned(request.getRemoteAddr())) { |
| log.debug("BANNED "+request.getRemoteAddr()); |
| response.sendError(HttpServletResponse.SC_NOT_FOUND); |
| return; |
| } else { |
| chain.doFilter(request, response); |
| } |
| } |
| |
| |
| public void destroy() {} |
| |
| } |