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172 lines
6.8 KiB
Java
172 lines
6.8 KiB
Java
/**
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*
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* Copyright 2017 Paul Schaub
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*
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* 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.jingle.transports.jingle_s5b;
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import java.io.IOException;
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import java.net.Socket;
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import java.util.Collections;
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import java.util.List;
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import java.util.concurrent.TimeoutException;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import org.jivesoftware.smack.SmackException;
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import org.jivesoftware.smack.XMPPException;
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import org.jivesoftware.smack.packet.IQ;
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import org.jivesoftware.smackx.bytestreams.socks5.Socks5Client;
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import org.jivesoftware.smackx.bytestreams.socks5.Socks5Utils;
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import org.jivesoftware.smackx.bytestreams.socks5.packet.Bytestream;
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import org.jivesoftware.smackx.jingle.JingleManager;
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import org.jivesoftware.smackx.jingle.JingleSession;
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import org.jivesoftware.smackx.jingle.element.Jingle;
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import org.jivesoftware.smackx.jingle.element.JingleContent;
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import org.jivesoftware.smackx.jingle.element.JingleContentTransportCandidate;
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import org.jivesoftware.smackx.jingle.transports.JingleTransportInitiationCallback;
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import org.jivesoftware.smackx.jingle.transports.JingleTransportManager;
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import org.jivesoftware.smackx.jingle.transports.JingleTransportSession;
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import org.jivesoftware.smackx.jingle.transports.jingle_s5b.elements.JingleS5BTransport;
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import org.jivesoftware.smackx.jingle.transports.jingle_s5b.elements.JingleS5BTransportCandidate;
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/**
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* LOL.
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*/
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public class JingleS5BTransportSession extends JingleTransportSession<JingleS5BTransport> {
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private static final Logger LOGGER = Logger.getLogger(JingleS5BTransportSession.class.getName());
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private final JingleS5BTransportManager transportManager;
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private Socket connectedSocket;
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private JingleS5BTransportCandidate usedCandidate;
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public JingleS5BTransportSession(JingleSession jingleSession) {
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super(jingleSession);
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transportManager = JingleS5BTransportManager.getInstanceFor(jingleSession.getConnection());
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}
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@Override
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public JingleS5BTransport createTransport() {
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if (localTransport != null) {
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return (JingleS5BTransport) localTransport;
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}
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return createTransport(JingleManager.randomId(), Bytestream.Mode.tcp);
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}
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private JingleS5BTransport createTransport(String sid, Bytestream.Mode mode) {
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JingleS5BTransport.Builder builder = JingleS5BTransport.getBuilder();
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for (Bytestream.StreamHost host : transportManager.getLocalStreamHosts()) {
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JingleS5BTransportCandidate candidate = new JingleS5BTransportCandidate(host, 100);
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builder.addTransportCandidate(candidate);
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}
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List<Bytestream.StreamHost> availableStreamHosts = null;
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try {
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availableStreamHosts = transportManager.getAvailableStreamHosts();
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} catch (XMPPException.XMPPErrorException | SmackException.NoResponseException | InterruptedException | SmackException.NotConnectedException e) {
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LOGGER.log(Level.WARNING, "Could not get available StreamHosts: " + e, e);
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}
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for (Bytestream.StreamHost host : availableStreamHosts != null ?
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availableStreamHosts : Collections.<Bytestream.StreamHost>emptyList()) {
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JingleS5BTransportCandidate candidate = new JingleS5BTransportCandidate(host, 0);
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builder.addTransportCandidate(candidate);
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}
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builder.setStreamId(sid);
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builder.setMode(mode);
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builder.setDestinationAddress(Socks5Utils.createDigest(sid, jingleSession.get().getLocal(), jingleSession.get().getRemote()));
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return builder.build();
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}
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@Override
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public void initiateOutgoingSession(JingleTransportInitiationCallback callback) {
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JingleSession jSession = jingleSession.get();
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if (jSession == null) {
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throw new NullPointerException("Lost reference to jingleSession.");
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}
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JingleS5BTransport receivedTransport = (JingleS5BTransport) remoteTransport;
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Socket socket = null;
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JingleS5BTransportCandidate workedForUs = null;
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for (JingleContentTransportCandidate c : receivedTransport.getCandidates()) {
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JingleS5BTransportCandidate candidate = (JingleS5BTransportCandidate) c;
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Bytestream.StreamHost streamHost = candidate.getStreamHost();
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String address = streamHost.getAddress();
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try {
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Socks5Client socks5Client = new Socks5Client(streamHost, receivedTransport.getDestinationAddress());
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socket = socks5Client.getSocket(10 * 1000);
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workedForUs = candidate;
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} catch (IOException | XMPPException | InterruptedException | TimeoutException | SmackException e) {
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LOGGER.log(Level.WARNING, "Could not connect to remotes address " + address + " with dstAddr "
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+ receivedTransport.getDestinationAddress());
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}
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JingleContent content = jSession.getContents().get(0);
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Jingle response;
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if (socket != null) {
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connectedSocket = socket;
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usedCandidate = workedForUs;
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response = transportManager.createCandidateUsed(jSession.getRemote(),
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jSession.getSessionId(), content.getSenders(), content.getCreator(),
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content.getName(), receivedTransport.getStreamId(), usedCandidate.getCandidateId());
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} else {
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response = transportManager.createCandidateError(jSession.getRemote(),
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jSession.getSessionId(), content.getSenders(), content.getCreator(),
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content.getName(), receivedTransport.getStreamId());
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}
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try {
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jSession.getConnection().sendStanza(response);
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} catch (SmackException.NotConnectedException | InterruptedException e) {
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LOGGER.log(Level.WARNING, "Could not send candidate-used.", e);
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}
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}
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}
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@Override
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public void initiateIncomingSession(JingleTransportInitiationCallback callback) {
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}
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@Override
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public String getNamespace() {
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return transportManager.getNamespace();
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}
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@Override
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public IQ handleTransportInfo(Jingle transportInfo) {
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return null;
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}
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@Override
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public JingleTransportManager<JingleS5BTransport> transportManager() {
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return JingleS5BTransportManager.getInstanceFor(jingleSession.get().getConnection());
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}
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}
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