1 /** 2 * $RCSfile$ 3 * $Revision$ 4 * $Date$ 5 * 6 * Copyright 2003-2007 Jive Software. 7 * 8 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21 package org.jivesoftware.smack.filter; 22 23 import org.jivesoftware.smack.packet.Packet; 24 import org.jivesoftware.smack.util.StringUtils; 25 26 /** 27 * Filter for packets where the "from" field exactly matches a specified JID. If the specified 28 * address is a bare JID then the filter will match any address whose bare JID matches the 29 * specified JID. But if the specified address is a full JID then the filter will only match 30 * if the sender of the packet matches the specified resource. 31 * 32 * @author Gaston Dombiak 33 */ 34 public class FromMatchesFilter implements PacketFilter { 35 36 private String address; 37 /** 38 * Flag that indicates if the checking will be done against bare JID addresses or full JIDs. 39 */ 40 private boolean matchBareJID = false; 41 42 /** 43 * Creates a "from" filter using the "from" field part. If the specified address is a bare JID 44 * then the filter will match any address whose bare JID matches the specified JID. But if the 45 * specified address is a full JID then the filter will only match if the sender of the packet 46 * matches the specified resource. 47 * 48 * @param address the from field value the packet must match. Could be a full or bare JID. 49 */ 50 public FromMatchesFilter(String address) { 51 if (address == null) { 52 throw new IllegalArgumentException("Parameter cannot be null."); 53 } 54 this.address = address.toLowerCase(); 55 matchBareJID = "".equals(StringUtils.parseResource(address)); 56 } 57 58 public boolean accept(Packet packet) { 59 if (packet.getFrom() == null) { 60 return false; 61 } 62 else if (matchBareJID) { 63 // Check if the bare JID of the sender of the packet matches the specified JID 64 return packet.getFrom().toLowerCase().startsWith(address); 65 } 66 else { 67 // Check if the full JID of the sender of the packet matches the specified JID 68 return address.equals(packet.getFrom().toLowerCase()); 69 } 70 } 71 72 public String toString() { 73 return "FromMatchesFilter: " + address; 74 } 75 } 76
