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https://github.com/vanitasvitae/Smack.git
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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@11821 b35dd754-fafc-0310-a699-88a17e54d16e
120 lines
4.4 KiB
Java
120 lines
4.4 KiB
Java
/**
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* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.bytestreams.socks5;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import org.jivesoftware.smack.PacketListener;
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import org.jivesoftware.smack.filter.AndFilter;
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import org.jivesoftware.smack.filter.IQTypeFilter;
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import org.jivesoftware.smack.filter.PacketFilter;
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import org.jivesoftware.smack.filter.PacketTypeFilter;
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import org.jivesoftware.smack.packet.IQ;
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import org.jivesoftware.smack.packet.Packet;
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import org.jivesoftware.smackx.bytestreams.BytestreamListener;
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import org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream;
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/**
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* InitiationListener handles all incoming SOCKS5 Bytestream initiation requests. If there are no
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* listeners for a SOCKS5 bytestream request InitiationListener will always refuse the request and
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* reply with a <not-acceptable/> error (<a
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* href="http://xmpp.org/extensions/xep-0065.html#usecase-alternate">XEP-0065</a> Section 5.2.A2).
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*
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* @author Henning Staib
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*/
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final class InitiationListener implements PacketListener {
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/* manager containing the listeners and the XMPP connection */
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private final Socks5BytestreamManager manager;
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/* packet filter for all SOCKS5 Bytestream requests */
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private final PacketFilter initFilter = new AndFilter(new PacketTypeFilter(Bytestream.class),
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new IQTypeFilter(IQ.Type.SET));
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/* executor service to process incoming requests concurrently */
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private final ExecutorService initiationListenerExecutor;
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/**
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* Constructor
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*
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* @param manager the SOCKS5 Bytestream manager
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*/
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protected InitiationListener(Socks5BytestreamManager manager) {
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this.manager = manager;
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initiationListenerExecutor = Executors.newCachedThreadPool();
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}
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public void processPacket(final Packet packet) {
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initiationListenerExecutor.execute(new Runnable() {
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public void run() {
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processRequest(packet);
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}
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});
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}
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private void processRequest(Packet packet) {
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Bytestream byteStreamRequest = (Bytestream) packet;
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// ignore request if in ignore list
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if (this.manager.getIgnoredBytestreamRequests().remove(byteStreamRequest.getSessionID())) {
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return;
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}
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// build bytestream request from packet
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Socks5BytestreamRequest request = new Socks5BytestreamRequest(this.manager,
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byteStreamRequest);
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// notify listeners for bytestream initiation from a specific user
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BytestreamListener userListener = this.manager.getUserListener(byteStreamRequest.getFrom());
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if (userListener != null) {
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userListener.incomingBytestreamRequest(request);
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}
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else if (!this.manager.getAllRequestListeners().isEmpty()) {
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/*
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* if there is no user specific listener inform listeners for all initiation requests
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*/
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for (BytestreamListener listener : this.manager.getAllRequestListeners()) {
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listener.incomingBytestreamRequest(request);
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}
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}
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else {
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/*
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* if there is no listener for this initiation request, reply with reject message
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*/
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this.manager.replyRejectPacket(byteStreamRequest);
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}
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}
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/**
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* Returns the packet filter for SOCKS5 Bytestream initialization requests.
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*
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* @return the packet filter for SOCKS5 Bytestream initialization requests
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*/
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protected PacketFilter getFilter() {
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return this.initFilter;
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}
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/**
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* Shuts down the listeners executor service.
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*/
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protected void shutdown() {
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this.initiationListenerExecutor.shutdownNow();
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}
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}
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