129 lines
5.6 KiB
Java
129 lines
5.6 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_ibb;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.WeakHashMap;
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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.Manager;
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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.util.StringUtils;
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import org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamListener;
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import org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamManager;
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import org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamRequest;
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import org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamSession;
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import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
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import org.jivesoftware.smackx.jingle.JingleContentTransportManager;
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import org.jivesoftware.smackx.jingle.JingleInputStream;
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import org.jivesoftware.smackx.jingle.JingleTransportInputStreamCallback;
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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.JingleContentTransport;
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import org.jivesoftware.smackx.jingle.provider.JingleContentProviderManager;
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import org.jivesoftware.smackx.jingle_ibb.element.JingleInBandBytestreamTransport;
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import org.jivesoftware.smackx.jingle_ibb.provider.JingleInBandByteStreamTransportProvider;
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/**
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* Manager for Jingle In-Band-Bytestreams.
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*/
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public final class JingleInBandBytestreamTransportManager extends Manager implements JingleContentTransportManager {
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private static final Logger LOGGER = Logger.getLogger(JingleInBandBytestreamTransportManager.class.getName());
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public static final String NAMESPACE_V1 = "urn:xmpp:jingle:transports:ibb:1";
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private static final WeakHashMap<XMPPConnection, JingleInBandBytestreamTransportManager> INSTANCES = new WeakHashMap<>();
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private JingleInBandBytestreamTransportManager(XMPPConnection connection) {
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super(connection);
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JingleContentProviderManager.addJingleContentTransportProvider(NAMESPACE_V1, new JingleInBandByteStreamTransportProvider());
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ServiceDiscoveryManager.getInstanceFor(connection).addFeature(NAMESPACE_V1);
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}
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public static JingleInBandBytestreamTransportManager getInstanceFor(XMPPConnection connection) {
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JingleInBandBytestreamTransportManager manager = INSTANCES.get(connection);
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if (manager == null) {
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manager = new JingleInBandBytestreamTransportManager(connection);
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INSTANCES.put(connection, manager);
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}
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return manager;
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}
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@Override
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public void acceptInputStream(final Jingle jingle, final JingleTransportInputStreamCallback callback) {
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final int blockSize = ((JingleInBandBytestreamTransport)
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jingle.getContents().get(0).getJingleTransports().get(0)).getBlockSize();
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InBandBytestreamListener bytestreamListener = new InBandBytestreamListener() {
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@Override
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public void incomingBytestreamRequest(InBandBytestreamRequest request) {
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if (request.getSessionID().equals(jingle.getSid())) {
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try {
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InBandBytestreamSession ibs = request.accept();
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InputStream inputStream = ibs.getInputStream();
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callback.onInputStream(new JingleInputStream(inputStream, blockSize));
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} catch (SmackException.NotConnectedException | InterruptedException e) {
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LOGGER.log(Level.SEVERE, "Could not accept IBB session: " + e, e);
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}
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}
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}
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};
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InBandBytestreamManager.getByteStreamManager(connection())
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.addIncomingBytestreamListener(bytestreamListener);
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}
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@Override
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public OutputStream createOutputStream(Jingle jingle) {
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JingleInBandBytestreamTransport transport = null;
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JingleContent content = jingle.getContents().get(0);
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for (JingleContentTransport t : content.getJingleTransports()) {
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if (t.getNamespace().equals(NAMESPACE_V1)) {
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transport = (JingleInBandBytestreamTransport) t;
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}
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}
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if (transport == null) {
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//TODO: Transport-failed
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return null;
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}
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InBandBytestreamManager ibm = InBandBytestreamManager.getByteStreamManager(connection());
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ibm.setMaximumBlockSize(transport.getBlockSize());
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InBandBytestreamSession ibs;
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try {
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ibs = ibm.establishSession(jingle.getFrom(), jingle.getSid());
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} catch (SmackException.NoResponseException | InterruptedException | SmackException.NotConnectedException | XMPPException.XMPPErrorException e) {
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LOGGER.log(Level.SEVERE, "Fail in handle request: " + e, e);
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return null;
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}
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return ibs.getOutputStream();
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}
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/**
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* Generate a random session id.
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* @return
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*/
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public static String generateSessionId() {
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return StringUtils.randomString(24);
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}
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}
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