258 lines
11 KiB
Java
258 lines
11 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_filetransfer;
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import java.io.File;
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import java.util.concurrent.Future;
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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.XMPPConnection;
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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.BytestreamSession;
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import org.jivesoftware.smackx.jingle.JingleManager;
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import org.jivesoftware.smackx.jingle.JingleTransportMethodManager;
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import org.jivesoftware.smackx.jingle.Role;
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import org.jivesoftware.smackx.jingle3.element.JingleContentElement;
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import org.jivesoftware.smackx.jingle3.element.JingleElement;
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import org.jivesoftware.smackx.jingle3.element.JingleReasonElement;
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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_filetransfer.callback.IncomingFileOfferCallback;
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import org.jivesoftware.smackx.jingle_filetransfer.element.JingleFileTransfer;
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import org.jivesoftware.smackx.jingle_filetransfer.handler.FileTransferHandler;
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import org.jxmpp.jid.FullJid;
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/**
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* We are the responder and we are the recipient.
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*/
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public class IncomingJingleFileOffer extends JingleFileTransferSession implements IncomingFileOfferCallback {
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private static final Logger LOGGER = Logger.getLogger(IncomingJingleFileOffer.class.getName());
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private JingleElement pendingSessionInitiate = null;
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private ReceiveTask receivingThread;
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private File target;
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@Override
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public void cancel() {
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if (state == State.active) {
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Future<?> task = queued.get(0);
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if (task != null) {
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task.cancel(true);
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queued.remove(task);
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}
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notifyEndedListeners(JingleReasonElement.Reason.cancel);
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}
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}
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public enum State {
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fresh,
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pending,
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sent_transport_replace,
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active,
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terminated
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}
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private State state;
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public IncomingJingleFileOffer(XMPPConnection connection, FullJid initiator, String sid) {
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super(connection, initiator, connection.getUser().asFullJidOrThrow(), Role.responder, sid, Type.offer);
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state = State.fresh;
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}
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public IncomingJingleFileOffer(XMPPConnection connection, JingleElement request) {
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this(connection, request.getInitiator(), request.getSid());
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}
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@Override
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public IQ handleSessionInitiate(final JingleElement initiate)
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throws InterruptedException, XMPPException.XMPPErrorException, SmackException.NotConnectedException,
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SmackException.NoResponseException {
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JingleTransportMethodManager tm = JingleTransportMethodManager.getInstanceFor(connection);
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if (state != State.fresh) {
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//Out of order (initiate after accept)
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LOGGER.log(Level.WARNING, "Action " + initiate.getAction() + " is out of order!");
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return jutil.createErrorOutOfOrder(initiate);
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}
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this.contents.addAll(initiate.getContents());
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this.file = (JingleFileTransfer) contents.get(0).getDescription();
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JingleTransportManager<?> transportManager = tm.getTransportManager(initiate);
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if (transportManager == null) {
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//Try fallback.
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pendingSessionInitiate = initiate;
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transportManager = tm.getBestAvailableTransportManager();
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if (transportManager == null) {
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//No usable transports.
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LOGGER.log(Level.WARNING, "No usable transports.");
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connection.createStanzaCollectorAndSend(jutil.createSessionTerminateUnsupportedTransports(getInitiator(), getSessionId()));
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state = State.terminated;
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return jutil.createAck(initiate);
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}
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transportSession = transportManager.transportSession(this);
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jutil.sendTransportReplace(initiate.getFrom().asFullJidOrThrow(), getInitiator(),
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getSessionId(), contents.get(0).getCreator(), contents.get(0).getName(),
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transportSession.createTransport());
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state = State.sent_transport_replace;
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return jutil.createAck(initiate);
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}
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transportSession = transportManager.transportSession(this);
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transportSession.processJingle(initiate);
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state = State.pending;
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JingleFileTransferManager.getInstanceFor(connection).notifyIncomingFileOffer(initiate,
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IncomingJingleFileOffer.this);
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return jutil.createAck(initiate);
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}
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@Override
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public IQ handleTransportReplace(final JingleElement transportReplace)
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throws InterruptedException, XMPPException.XMPPErrorException,
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SmackException.NotConnectedException, SmackException.NoResponseException {
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final JingleTransportManager<?> replacementManager = JingleTransportMethodManager.getInstanceFor(connection)
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.getTransportManager(transportReplace);
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queued.add(JingleManager.getThreadPool().submit(new Runnable() {
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@Override
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public void run() {
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try {
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if (replacementManager != null) {
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LOGGER.log(Level.INFO, "Accept transport-replace.");
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IncomingJingleFileOffer.this.transportSession = replacementManager.transportSession(IncomingJingleFileOffer.this);
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transportSession.processJingle(transportReplace);
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transportSession.initiateIncomingSession(new JingleTransportInitiationCallback() {
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@Override
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public void onSessionInitiated(BytestreamSession bytestreamSession) {
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LOGGER.log(Level.INFO, "Bytestream initiated. Start receiving.");
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receivingThread = new ReceiveTask(IncomingJingleFileOffer.this, bytestreamSession, file, target);
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queued.add(JingleManager.getThreadPool().submit(receivingThread));
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}
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@Override
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public void onException(Exception e) {
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LOGGER.log(Level.SEVERE, "EXCEPTION IN INCOMING SESSION: ", e);
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}
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});
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jutil.sendTransportAccept(transportReplace.getFrom().asFullJidOrThrow(),
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transportReplace.getInitiator(), transportReplace.getSid(),
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getContents().get(0).getCreator(), getContents().get(0).getName(),
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transportSession.createTransport());
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} else {
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LOGGER.log(Level.INFO, "Unsupported transport. Reject transport-replace.");
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jutil.sendTransportReject(transportReplace.getFrom().asFullJidOrThrow(), transportReplace.getInitiator(),
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transportReplace.getSid(), getContents().get(0).getCreator(),
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getContents().get(0).getName(), transportReplace.getContents().get(0).getTransport());
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}
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} catch (InterruptedException | XMPPException.XMPPErrorException | SmackException.NotConnectedException | SmackException.NoResponseException e) {
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LOGGER.log(Level.SEVERE, "Help me please!", e);
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}
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}
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}));
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return jutil.createAck(transportReplace);
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}
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@Override
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public IQ handleTransportAccept(JingleElement transportAccept) {
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LOGGER.log(Level.INFO, "Received transport-accept.");
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if (state != State.sent_transport_replace) {
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LOGGER.log(Level.WARNING, "Session is in state " + state + ", so the transport-accept is out of order.");
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return jutil.createErrorOutOfOrder(transportAccept);
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}
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JingleFileTransferManager.getInstanceFor(connection)
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.notifyIncomingFileOffer(pendingSessionInitiate, this);
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transportSession.processJingle(transportAccept);
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state = State.pending;
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return jutil.createAck(transportAccept);
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}
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@Override
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public void onTransportMethodFailed(String namespace) {
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//Nothing to do.
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}
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@Override
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public FileTransferHandler acceptIncomingFileOffer(final JingleElement request, final File target) {
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this.target = target;
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LOGGER.log(Level.INFO, "Client accepted incoming file offer. Try to start receiving.");
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if (transportSession == null) {
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//Unsupported transport
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LOGGER.log(Level.WARNING, "Unsupported Transport method.");
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try {
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jutil.sendSessionTerminateUnsupportedTransports(request.getFrom().asFullJidOrThrow(), sid);
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} catch (InterruptedException | SmackException.NoResponseException |
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SmackException.NotConnectedException | XMPPException.XMPPErrorException e) {
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LOGGER.log(Level.SEVERE, "Could not send session-terminate: " + e, e);
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}
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return null;
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}
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state = State.active;
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try {
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jutil.sendSessionAccept(getInitiator(), sid, getContents().get(0).getCreator(),
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getContents().get(0).getName(), JingleContentElement.Senders.initiator, file,
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transportSession.createTransport());
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} catch (SmackException.NotConnectedException | SmackException.NoResponseException |
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XMPPException.XMPPErrorException | InterruptedException e) {
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LOGGER.log(Level.WARNING, "Could not send session-accept.", e);
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}
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transportSession.initiateIncomingSession(new JingleTransportInitiationCallback() {
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@Override
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public void onSessionInitiated(BytestreamSession bytestreamSession) {
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LOGGER.log(Level.INFO, "Bytestream initiated. Start receiving.");
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receivingThread = new ReceiveTask(IncomingJingleFileOffer.this, bytestreamSession, file, target);
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queued.add(JingleManager.getThreadPool().submit(receivingThread));
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started = true;
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notifyStartedListeners();
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}
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@Override
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public void onException(Exception e) {
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LOGGER.log(Level.SEVERE, "EXCEPTION IN INCOMING SESSION: ", e);
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}
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});
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return this;
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}
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@Override
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public void declineIncomingFileOffer(JingleElement request) {
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state = State.terminated;
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try {
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jutil.sendSessionTerminateDecline(request.getInitiator(), request.getSid());
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} catch (SmackException.NotConnectedException | SmackException.NoResponseException |
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XMPPException.XMPPErrorException | InterruptedException e) {
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LOGGER.log(Level.SEVERE, "Could not send session-terminate: " + e, e);
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}
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}
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}
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