/*
* Copyright (C) 2015 Tom Evans. All rights reserved.
*
* 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.openfire.websocket;
import java.net.InetSocketAddress;
import org.dom4j.Namespace;
import org.jivesoftware.openfire.PacketDeliverer;
import org.jivesoftware.openfire.auth.UnauthorizedException;
import org.jivesoftware.openfire.net.VirtualConnection;
import org.jivesoftware.openfire.nio.OfflinePacketDeliverer;
import org.jivesoftware.openfire.spi.ConnectionConfiguration;
import org.xmpp.packet.Packet;
import org.xmpp.packet.StreamError;
/**
* Following the conventions of the BOSH implementation, this class extends {@link VirtualConnection}
* and delegates the expected XMPP connection behaviors to the corresponding {@link XmppWebSocket}.
*/
public class WebSocketConnection extends VirtualConnection
{
private InetSocketAddress remotePeer;
private XmppWebSocket socket;
private PacketDeliverer backupDeliverer;
public WebSocketConnection(XmppWebSocket socket, InetSocketAddress remotePeer) {
this.socket = socket;
this.remotePeer = remotePeer;
}
@Override
public void closeVirtualConnection()
{
socket.closeSession();
}
@Override
public byte[] getAddress() {
return remotePeer.getAddress().getAddress();
}
@Override
public String getHostAddress() {
return remotePeer.getAddress().getHostAddress();
}
@Override
public String getHostName() {
return remotePeer.getHostName();
}
@Override
public void systemShutdown() {
deliverRawText(new StreamError(StreamError.Condition.system_shutdown).toXML());
close();
}
@Override
public void deliver(Packet packet) throws UnauthorizedException
{
final String xml;
if (Namespace.NO_NAMESPACE.equals(packet.getElement().getNamespace())) {
// use string-based operation here to avoid cascading xmlns wonkery
StringBuilder packetXml = new StringBuilder(packet.toXML());
packetXml.insert(packetXml.indexOf(" "), " xmlns=\"jabber:client\"");
xml = packetXml.toString();
} else {
xml = packet.toXML();
}
if (validate()) {
deliverRawText(xml);
} else {
// use fallback delivery mechanism (offline)
getPacketDeliverer().deliver(packet);
}
}
@Override
public void deliverRawText(String text)
{
socket.deliver(text);
}
@Override
public boolean validate() {
return socket.isWebSocketOpen();
}
@Override
public boolean isSecure() {
return socket.isWebSocketSecure();
}
@Override
public PacketDeliverer getPacketDeliverer() {
if (backupDeliverer == null) {
backupDeliverer = new OfflinePacketDeliverer();
}
return backupDeliverer;
}
@Override
public ConnectionConfiguration getConfiguration()
{
// TODO Here we run into an issue with the ConnectionConfiguration introduced in Openfire 4:
// it is not extensible in the sense that unforeseen connection types can be added.
// For now, null is returned, as this object is likely to be unused (its lifecycle is
// not managed by a ConnectionListener instance).
return null;
}
@Override
public boolean isCompressed() {
return XmppWebSocket.isCompressionEnabled();
}
}