1d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen/** 2d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * $RCSfile$ 3d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * $Revision$ 4d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * $Date$ 5d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 6d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Copyright 2003-2007 Jive Software. 7d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 8d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); 9d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * you may not use this file except in compliance with the License. 10d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * You may obtain a copy of the License at 11d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 12d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * http://www.apache.org/licenses/LICENSE-2.0 13d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 14d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Unless required by applicable law or agreed to in writing, software 15d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * distributed under the License is distributed on an "AS IS" BASIS, 16d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * See the License for the specific language governing permissions and 18d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * limitations under the License. 19d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 20d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 21d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenpackage org.jivesoftware.smack.filter; 22d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 23d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport org.jivesoftware.smack.packet.Packet; 24d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 25d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport java.util.List; 26d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenimport java.util.ArrayList; 27d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 28d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen/** 29d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Implements the logical AND operation over two or more packet filters. 30d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * In other words, packets pass this filter if they pass <b>all</b> of the filters. 31d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 32d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @author Matt Tucker 33d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 34d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenpublic class AndFilter implements PacketFilter { 35d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 36d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 37d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * The list of filters. 38d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 39d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen private List<PacketFilter> filters = new ArrayList<PacketFilter>(); 40d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 41d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 42d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Creates an empty AND filter. Filters should be added using the 43d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * {@link #addFilter(PacketFilter)} method. 44d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 45d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public AndFilter() { 46d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 47d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 48d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 49d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 50d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Creates an AND filter using the specified filters. 51d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 52d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param filters the filters to add. 53d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 54d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public AndFilter(PacketFilter... filters) { 55d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (filters == null) { 56d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen throw new IllegalArgumentException("Parameter cannot be null."); 57d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 58d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen for(PacketFilter filter : filters) { 59d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if(filter == null) { 60d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen throw new IllegalArgumentException("Parameter cannot be null."); 61d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 62d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen this.filters.add(filter); 63d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 64d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 65d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 66d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen /** 67d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Adds a filter to the filter list for the AND operation. A packet 68d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * will pass the filter if all of the filters in the list accept it. 69d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 70d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @param filter a filter to add to the filter list. 71d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 72d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public void addFilter(PacketFilter filter) { 73d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (filter == null) { 74d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen throw new IllegalArgumentException("Parameter cannot be null."); 75d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 76d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen filters.add(filter); 77d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 78d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 79d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public boolean accept(Packet packet) { 80d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen for (PacketFilter filter : filters) { 81d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen if (!filter.accept(packet)) { 82d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return false; 83d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 84d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 85d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return true; 86d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 87d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 88d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String toString() { 89d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return filters.toString(); 90d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 91d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen} 92