Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | /**
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| 2 | * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
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| 3 | * you may not use this file except in compliance with the License.
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| 4 | * You may obtain a copy of the License at
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| 5 | *
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| 6 | * http://www.apache.org/licenses/LICENSE-2.0
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| 7 | *
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| 8 | * Unless required by applicable law or agreed to in writing, software
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| 9 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 10 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 11 | * See the License for the specific language governing permissions and
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| 12 | * limitations under the License.
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| 13 | */
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| 14 | package org.jivesoftware.smackx.bytestreams.ibb;
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| 15 |
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| 16 | import org.jivesoftware.smack.PacketListener;
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| 17 | import org.jivesoftware.smack.filter.AndFilter;
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| 18 | import org.jivesoftware.smack.filter.PacketFilter;
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| 19 | import org.jivesoftware.smack.filter.PacketTypeFilter;
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| 20 | import org.jivesoftware.smack.packet.Packet;
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| 21 | import org.jivesoftware.smackx.bytestreams.ibb.packet.Data;
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| 22 |
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| 23 | /**
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| 24 | * DataListener handles all In-Band Bytestream IQ stanzas containing a data
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| 25 | * packet extension that don't belong to an existing session.
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| 26 | * <p>
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| 27 | * If a data packet is received it looks if a stored In-Band Bytestream session
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| 28 | * exists. If no session with the given session ID exists an
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| 29 | * <item-not-found/> error is returned to the sender.
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| 30 | * <p>
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| 31 | * Data packets belonging to a running In-Band Bytestream session are processed
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| 32 | * by more specific listeners registered when an {@link InBandBytestreamSession}
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| 33 | * is created.
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| 34 | *
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| 35 | * @author Henning Staib
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| 36 | */
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| 37 | class DataListener implements PacketListener {
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| 38 |
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| 39 | /* manager containing the listeners and the XMPP connection */
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| 40 | private final InBandBytestreamManager manager;
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| 41 |
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| 42 | /* packet filter for all In-Band Bytestream data packets */
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| 43 | private final PacketFilter dataFilter = new AndFilter(
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| 44 | new PacketTypeFilter(Data.class));
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| 45 |
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| 46 | /**
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| 47 | * Constructor.
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| 48 | *
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| 49 | * @param manager the In-Band Bytestream manager
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| 50 | */
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| 51 | public DataListener(InBandBytestreamManager manager) {
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| 52 | this.manager = manager;
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| 53 | }
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| 54 |
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| 55 | public void processPacket(Packet packet) {
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| 56 | Data data = (Data) packet;
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| 57 | InBandBytestreamSession ibbSession = this.manager.getSessions().get(
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| 58 | data.getDataPacketExtension().getSessionID());
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| 59 | if (ibbSession == null) {
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| 60 | this.manager.replyItemNotFoundPacket(data);
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| 61 | }
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| 62 | }
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| 63 |
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| 64 | /**
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| 65 | * Returns the packet filter for In-Band Bytestream data packets.
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| 66 | *
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| 67 | * @return the packet filter for In-Band Bytestream data packets
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| 68 | */
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| 69 | protected PacketFilter getFilter() {
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| 70 | return this.dataFilter;
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| 71 | }
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| 72 |
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| 73 | }
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