Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 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 | } |