279 lines
11 KiB
Java
279 lines
11 KiB
Java
/**
|
|
*
|
|
* Copyright 2017 Paul Schaub
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
package org.jivesoftware.smackx.jingle.components;
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.Collections;
|
|
import java.util.HashSet;
|
|
import java.util.List;
|
|
import java.util.Set;
|
|
import java.util.logging.Level;
|
|
import java.util.logging.Logger;
|
|
|
|
import org.jivesoftware.smack.SmackException;
|
|
import org.jivesoftware.smack.XMPPConnection;
|
|
import org.jivesoftware.smack.XMPPException;
|
|
import org.jivesoftware.smack.util.StringUtils;
|
|
import org.jivesoftware.smackx.bytestreams.BytestreamSession;
|
|
import org.jivesoftware.smackx.jingle.JingleManager;
|
|
import org.jivesoftware.smackx.jingle.adapter.JingleDescriptionAdapter;
|
|
import org.jivesoftware.smackx.jingle.adapter.JingleTransportAdapter;
|
|
import org.jivesoftware.smackx.jingle.callbacks.JingleTransportCallback;
|
|
import org.jivesoftware.smackx.jingle.element.JingleContentDescriptionElement;
|
|
import org.jivesoftware.smackx.jingle.element.JingleContentSecurityElement;
|
|
import org.jivesoftware.smackx.jingle.element.JingleContentTransportElement;
|
|
import org.jivesoftware.smackx.jingle.Callback;
|
|
import org.jivesoftware.smackx.jingle.adapter.JingleSecurityAdapter;
|
|
import org.jivesoftware.smackx.jingle.element.JingleContentElement;
|
|
import org.jivesoftware.smackx.jingle.element.JingleElement;
|
|
import org.jivesoftware.smackx.jingle.element.JingleReasonElement;
|
|
import org.jivesoftware.smackx.jingle.JingleTransportManager;
|
|
|
|
/**
|
|
* Internal class that holds the state of a content in a modifiable form.
|
|
*/
|
|
public class JingleContent implements JingleTransportCallback {
|
|
|
|
private static final Logger LOGGER = Logger.getLogger(JingleContent.class.getName());
|
|
|
|
private JingleSession parent;
|
|
private JingleContentElement.Creator creator;
|
|
private String name;
|
|
private String disposition;
|
|
private JingleContentElement.Senders senders;
|
|
private JingleDescription<?> description;
|
|
private JingleTransport<?> transport;
|
|
private JingleSecurity<?> security;
|
|
|
|
private final List<Callback> callbacks = Collections.synchronizedList(new ArrayList<Callback>());
|
|
private final Set<String> transportBlacklist = Collections.synchronizedSet(new HashSet<String>());
|
|
|
|
public enum STATE {
|
|
pending_accept,
|
|
pending_transmission_start,
|
|
pending_transport_replace,
|
|
transmission_in_progress,
|
|
transmission_successful,
|
|
transmission_failed,
|
|
transmission_cancelled
|
|
}
|
|
|
|
public JingleContent(JingleContentElement.Creator creator, JingleContentElement.Senders senders) {
|
|
this(null, null, null, randomName(), null, creator, senders);
|
|
}
|
|
|
|
public JingleContent(JingleDescription<?> description, JingleTransport<?> transport, JingleSecurity<?> security, String name, String disposition, JingleContentElement.Creator creator, JingleContentElement.Senders senders) {
|
|
this.description = description;
|
|
this.transport = transport;
|
|
this.security = security;
|
|
this.name = name;
|
|
this.disposition = disposition;
|
|
this.creator = creator;
|
|
this.senders = senders;
|
|
}
|
|
|
|
public static JingleContent fromElement(JingleContentElement content) {
|
|
JingleDescription<?> description = null;
|
|
JingleTransport<?> transport = null;
|
|
JingleSecurity<?> security = null;
|
|
|
|
JingleContentDescriptionElement descriptionElement = content.getDescription();
|
|
if (descriptionElement != null) {
|
|
JingleDescriptionAdapter<?> descriptionAdapter = JingleManager.getJingleDescriptionAdapter(content.getDescription().getNamespace());
|
|
if (descriptionAdapter != null) {
|
|
description = descriptionAdapter.descriptionFromElement(descriptionElement);
|
|
} else {
|
|
throw new AssertionError("DescriptionProvider for " + descriptionElement.getNamespace() +
|
|
" seems to be registered, but no corresponding JingleDescriptionAdapter was found.");
|
|
}
|
|
}
|
|
|
|
JingleContentTransportElement transportElement = content.getTransport();
|
|
if (transportElement != null) {
|
|
JingleTransportAdapter<?> transportAdapter = JingleManager.getJingleTransportAdapter(content.getTransport().getNamespace());
|
|
if (transportAdapter != null) {
|
|
transport = transportAdapter.transportFromElement(transportElement);
|
|
} else {
|
|
throw new AssertionError("DescriptionProvider for " + transportElement.getNamespace() +
|
|
" seems to be registered, but no corresponding JingleTransportAdapter was found.");
|
|
}
|
|
}
|
|
|
|
JingleContentSecurityElement securityElement = content.getSecurity();
|
|
if (securityElement != null) {
|
|
JingleSecurityAdapter<?> securityAdapter = JingleManager.getJingleSecurityAdapter(content.getSecurity().getNamespace());
|
|
if (securityAdapter != null) {
|
|
security = securityAdapter.securityFromElement(securityElement);
|
|
} else {
|
|
throw new AssertionError("SecurityProvider for " + securityElement.getNamespace() +
|
|
" seems to be registered, but no corresponding JingleSecurityAdapter was found.");
|
|
}
|
|
}
|
|
|
|
return new JingleContent(description, transport, security, content.getName(), content.getDisposition(), content.getCreator(), content.getSenders());
|
|
}
|
|
|
|
public void addCallback(Callback callback) {
|
|
callbacks.add(callback);
|
|
}
|
|
|
|
public JingleContentElement getElement() {
|
|
return JingleContentElement.getBuilder()
|
|
.setName(name)
|
|
.setCreator(creator)
|
|
.setSenders(senders)
|
|
.setDescription(description.getElement())
|
|
.setTransport(transport.getElement())
|
|
.setSecurity(security.getElement())
|
|
.setDisposition(disposition)
|
|
.build();
|
|
}
|
|
|
|
public Set<String> getTransportBlacklist() {
|
|
return transportBlacklist;
|
|
}
|
|
|
|
public JingleContentElement.Creator getCreator() {
|
|
return creator;
|
|
}
|
|
|
|
public String getName() {
|
|
return name;
|
|
}
|
|
|
|
public JingleContentElement.Senders getSenders() {
|
|
return senders;
|
|
}
|
|
|
|
public void setParent(JingleSession session) {
|
|
if (this.parent != session) {
|
|
this.parent = session;
|
|
}
|
|
}
|
|
|
|
public JingleSession getParent() {
|
|
return parent;
|
|
}
|
|
|
|
public JingleDescription<?> getDescription() {
|
|
return description;
|
|
}
|
|
|
|
public void setDescription(JingleDescription<?> description) {
|
|
if (this.description != description) {
|
|
this.description = description;
|
|
description.setParent(this);
|
|
}
|
|
}
|
|
|
|
public JingleTransport<?> getTransport() {
|
|
return transport;
|
|
}
|
|
|
|
public void setTransport(JingleTransport<?> transport) {
|
|
if (this.transport != transport) {
|
|
this.transport = transport;
|
|
transport.setParent(this);
|
|
}
|
|
}
|
|
|
|
public JingleSecurity<?> getSecurity() {
|
|
return security;
|
|
}
|
|
|
|
public void setSecurity(JingleSecurity<?> security) {
|
|
if (this.security != security) {
|
|
this.security = security;
|
|
security.setParent(this);
|
|
}
|
|
}
|
|
|
|
private boolean isSending() {
|
|
return (getSenders() == JingleContentElement.Senders.initiator && getParent().isInitiator()) ||
|
|
(getSenders() == JingleContentElement.Senders.responder && getParent().isResponder()) ||
|
|
getSenders() == JingleContentElement.Senders.both;
|
|
}
|
|
|
|
private boolean isReceiving() {
|
|
return (getSenders() == JingleContentElement.Senders.initiator && getParent().isResponder()) ||
|
|
(getSenders() == JingleContentElement.Senders.responder && getParent().isInitiator()) ||
|
|
getSenders() == JingleContentElement.Senders.both;
|
|
}
|
|
|
|
@Override
|
|
public void onTransportReady(BytestreamSession bytestreamSession) {
|
|
|
|
if (bytestreamSession == null) {
|
|
throw new AssertionError("bytestreamSession MUST NOT be null at this point.");
|
|
}
|
|
|
|
description.onTransportReady(bytestreamSession);
|
|
}
|
|
|
|
@Override
|
|
public void onTransportFailed(Exception e) {
|
|
//Add current transport to blacklist.
|
|
getTransportBlacklist().add(transport.getNamespace());
|
|
|
|
//Replace transport.
|
|
if (getParent().isInitiator()) {
|
|
try {
|
|
replaceTransport(getTransportBlacklist(), getParent().getJingleManager().getConnection());
|
|
} catch (SmackException.NotConnectedException | InterruptedException | SmackException.NoResponseException | XMPPException.XMPPErrorException e1) {
|
|
LOGGER.log(Level.SEVERE, "Could not send transport-replace: " + e, e);
|
|
}
|
|
}
|
|
}
|
|
|
|
private void replaceTransport(Set<String> blacklist, XMPPConnection connection)
|
|
throws SmackException.NotConnectedException, InterruptedException,
|
|
XMPPException.XMPPErrorException, SmackException.NoResponseException {
|
|
|
|
JingleSession session = getParent();
|
|
JingleManager jingleManager = session.getJingleManager();
|
|
|
|
JingleTransportManager rManager = jingleManager.getBestAvailableTransportManager(blacklist);
|
|
if (rManager == null) {
|
|
JingleElement failedTransport = JingleElement.createSessionTerminate(session.getPeer(),
|
|
session.getSessionId(), JingleReasonElement.Reason.failed_transport);
|
|
connection.createStanzaCollectorAndSend(failedTransport).nextResultOrThrow();
|
|
return;
|
|
}
|
|
|
|
JingleTransport<?> rTransport = rManager.createTransport(this);
|
|
|
|
JingleElement transportReplace = JingleElement.createTransportReplace(session.getInitiator(), session.getPeer(),
|
|
session.getSessionId(), getCreator(), getName(), rTransport.getElement());
|
|
|
|
connection.createStanzaCollectorAndSend(transportReplace).nextResultOrThrow();
|
|
}
|
|
|
|
public void onContentAccept(XMPPConnection connection)
|
|
throws SmackException.NotConnectedException, InterruptedException {
|
|
//Establish transport
|
|
if (isReceiving()) {
|
|
getTransport().establishIncomingBytestreamSession(connection, this);
|
|
} else if (isSending()) {
|
|
getTransport().establishOutgoingBytestreamSession(connection, this);
|
|
}
|
|
}
|
|
|
|
public static String randomName() {
|
|
return "cont-" + StringUtils.randomString(16);
|
|
}
|
|
}
|