// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License. Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
//
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.consoleproxy.vnc;
import java.awt.Toolkit;
import java.awt.datatransfer.StringSelection;
import java.io.DataInputStream;
import java.io.IOException;
import com.cloud.consoleproxy.ConsoleProxyClientListener;
import com.cloud.consoleproxy.util.Logger;
import com.cloud.consoleproxy.vnc.packet.server.FramebufferUpdatePacket;
import com.cloud.consoleproxy.vnc.packet.server.ServerCutText;
public class VncServerPacketReceiver implements Runnable {
private static final Logger s_logger = Logger.getLogger(VncServerPacketReceiver.class);
private final VncScreenDescription screen;
private BufferedImageCanvas canvas;
private DataInputStream is;
private boolean connectionAlive = true;
private VncClient vncConnection;
private final FrameBufferUpdateListener fburListener;
private final ConsoleProxyClientListener clientListener;
public VncServerPacketReceiver(DataInputStream is, BufferedImageCanvas canvas, VncScreenDescription screen, VncClient vncConnection,
FrameBufferUpdateListener fburListener, ConsoleProxyClientListener clientListener) {
this.screen = screen;
this.canvas = canvas;
this.is = is;
this.vncConnection = vncConnection;
this.fburListener = fburListener;
this.clientListener = clientListener;
}
public BufferedImageCanvas getCanvas() {
return canvas;
}
@Override
public void run() {
try {
while (connectionAlive) {
// Read server message type
int messageType = is.readUnsignedByte();
// Invoke packet handler by packet type.
switch (messageType) {
case RfbConstants.SERVER_FRAMEBUFFER_UPDATE: {
// Notify sender that frame buffer update is received,
// so it can send another frame buffer update request
fburListener.frameBufferPacketReceived();
// Handle frame buffer update
new FramebufferUpdatePacket(canvas, screen, is, clientListener);
break;
}
case RfbConstants.SERVER_BELL: {
serverBell();
break;
}
case RfbConstants.SERVER_CUT_TEXT: {
serverCutText(is);
break;
}
default:
throw new RuntimeException("Unknown server packet type: " + messageType + ".");
}
}
} catch (Throwable e) {
s_logger.error("Unexpected exception: ", e);
if (connectionAlive) {
closeConnection();
vncConnection.shutdown();
}
}
}
public void closeConnection() {
connectionAlive = false;
}
public boolean isConnectionAlive() {
return connectionAlive;
}
/**
* Handle server bell packet.
*/
private void serverBell() {
Toolkit.getDefaultToolkit().beep();
}
/**
* Handle packet with server clip-board.
*/
private void serverCutText(DataInputStream is) throws IOException {
ServerCutText clipboardContent = new ServerCutText(is);
StringSelection contents = new StringSelection(clipboardContent.getContent());
Toolkit.getDefaultToolkit().getSystemClipboard().setContents(contents, null);
s_logger.info("Server clipboard buffer: "+clipboardContent.getContent());
}
}