// 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;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.UnknownHostException;
import org.apache.log4j.Logger;
import com.cloud.consoleproxy.vnc.FrameBufferCanvas;
import com.cloud.consoleproxy.vnc.RfbConstants;
import com.cloud.consoleproxy.vnc.VncClient;
/**
*
* @author Kelven Yang
* ConsoleProxyVncClient bridges a VNC engine with the front-end AJAX viewer
*
*/
public class ConsoleProxyVncClient extends ConsoleProxyClientBase {
private static final Logger s_logger = Logger.getLogger(ConsoleProxyVncClient.class);
private VncClient client;
private Thread worker;
private boolean workerDone = false;
public ConsoleProxyVncClient() {
}
public boolean isHostConnected() {
if(client != null)
return client.isHostConnected();
return false;
}
@Override
public boolean isFrontEndAlive() {
if(workerDone || System.currentTimeMillis() - getClientLastFrontEndActivityTime() > ConsoleProxy.VIEWER_LINGER_SECONDS*1000) {
s_logger.info("Front end has been idle for too long");
return false;
}
return true;
}
@Override
public void initClient(ConsoleProxyClientParam param) {
setClientParam(param);
client = new VncClient(this);
worker = new Thread(new Runnable() {
public void run() {
String tunnelUrl = getClientParam().getClientTunnelUrl();
String tunnelSession = getClientParam().getClientTunnelSession();
for(int i = 0; i < 15; i++) {
try {
if(tunnelUrl != null && !tunnelUrl.isEmpty() && tunnelSession != null && !tunnelSession.isEmpty()) {
URI uri = new URI(tunnelUrl);
s_logger.info("Connect to VNC server via tunnel. url: " + tunnelUrl + ", session: " + tunnelSession);
client.connectTo(
uri.getHost(), uri.getPort(),
uri.getPath() + "?" + uri.getQuery(),
tunnelSession, "https".equalsIgnoreCase(uri.getScheme()),
getClientHostPassword());
} else {
s_logger.info("Connect to VNC server directly. host: " + getClientHostAddress() + ", port: " + getClientHostPort());
client.connectTo(getClientHostAddress(), getClientHostPort(), getClientHostPassword());
}
} catch (UnknownHostException e) {
s_logger.error("Unexpected exception (will retry until timeout)", e);
} catch (IOException e) {
s_logger.error("Unexpected exception (will retry until timeout) ", e);
} catch (Throwable e) {
s_logger.error("Unexpected exception (will retry until timeout) ", e);
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
if(tunnelUrl != null && !tunnelUrl.isEmpty() && tunnelSession != null && !tunnelSession.isEmpty()) {
ConsoleProxyAuthenticationResult authResult = ConsoleProxy.reAuthenticationExternally(getClientParam());
if(authResult != null && authResult.isSuccess()) {
if(authResult.getTunnelUrl() != null && !authResult.getTunnelUrl().isEmpty() &&
authResult.getTunnelSession() != null && !authResult.getTunnelSession().isEmpty()) {
tunnelUrl = authResult.getTunnelUrl();
tunnelSession = authResult.getTunnelSession();
s_logger.info("Reset XAPI session. url: " + tunnelUrl + ", session: " + tunnelSession);
}
}
}
}
s_logger.info("Receiver thread stopped.");
workerDone = true;
client.getClientListener().onClientClose();
}
});
worker.setDaemon(true);
worker.start();
}
@Override
public void closeClient() {
if(client != null)
client.shutdown();
}
@Override
public void onClientConnected() {
}
public void onClientClose() {
s_logger.info("Received client close indication. remove viewer from map.");
ConsoleProxy.removeViewer(this);
}
@Override
public void onFramebufferUpdate(int x, int y, int w, int h) {
super.onFramebufferUpdate(x, y, w, h);
client.requestUpdate(false);
}
public void sendClientRawKeyboardEvent(InputEventType event, int code, int modifiers) {
if(client == null)
return;
updateFrontEndActivityTime();
switch(event) {
case KEY_DOWN :
client.sendClientKeyboardEvent(RfbConstants.KEY_DOWN, code, 0);
break;
case KEY_UP :
client.sendClientKeyboardEvent(RfbConstants.KEY_UP, code, 0);
break;
case KEY_PRESS :
break;
default :
assert(false);
break;
}
}
public void sendClientMouseEvent(InputEventType event, int x, int y, int code, int modifiers) {
if(client == null)
return;
updateFrontEndActivityTime();
int pointerMask = 0;
int mask = 1;
if(code == 2)
mask = 4;
if(event == InputEventType.MOUSE_DOWN) {
pointerMask = mask;
}
client.sendClientMouseEvent(pointerMask, x, y, code, modifiers);
}
@Override
protected FrameBufferCanvas getFrameBufferCavas() {
if(client != null)
return client.getFrameBufferCanvas();
return null;
}
}