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GUAC-587: Remove ancient eventing system - it's been partially broken since 0.9.4, and really should be replaced with a true eventing subsystem.

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This commit is contained in:
Michael Jumper
2015-05-11 14:43:33 -07:00
parent 3d924873f1
commit 8cbad4e151
4 changed files with 0 additions and 240 deletions
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61
guacamole/src/main/java/org/glyptodon/guacamole/net/basic/GuacamoleSession.java
View File

@@ -60,11 +60,6 @@ public class GuacamoleSession {
*/
private UserContext userContext;
/**
* Collection of all event listeners configured in guacamole.properties.
*/
private final Collection<Object> listeners = new ArrayList<Object>();
/**
* The current clipboard state.
*/
@@ -98,52 +93,9 @@ public class GuacamoleSession {
*/
public GuacamoleSession(Environment environment, Credentials credentials,
UserContext userContext) throws GuacamoleException {
this.lastAccessedTime = System.currentTimeMillis();
this.credentials = credentials;
this.userContext = userContext;
// Load listeners from guacamole.properties
try {
// Get all listener classes from properties
Collection<Class> listenerClasses =
environment.getProperty(BasicGuacamoleProperties.EVENT_LISTENERS);
// Add an instance of each class to the list
if (listenerClasses != null) {
for (Class<?> listenerClass : listenerClasses) {
// Instantiate listener
Object listener = listenerClass.getConstructor().newInstance();
// Add listener to collection of listeners
listeners.add(listener);
}
}
}
catch (InstantiationException e) {
throw new GuacamoleException("Listener class is abstract.", e);
}
catch (IllegalAccessException e) {
throw new GuacamoleException("No access to listener constructor.", e);
}
catch (IllegalArgumentException e) {
// This should not happen, given there ARE no arguments
throw new GuacamoleException("Illegal arguments to listener constructor.", e);
}
catch (InvocationTargetException e) {
throw new GuacamoleException("Error while instantiating listener.", e);
}
catch (NoSuchMethodException e) {
throw new GuacamoleException("Listener has no default constructor.", e);
}
catch (SecurityException e) {
throw new GuacamoleException("Security restrictions prevent instantiation of listener.", e);
}
}
/**
@@ -198,19 +150,6 @@ public class GuacamoleSession {
return clipboardState;
}
/**
* Returns a collection which iterates over instances of all listeners
* defined in guacamole.properties. For each listener defined in
* guacamole.properties, a new instance is created and stored in this
* collection.
*
* @return A collection which iterates over instances of all listeners
* defined in guacamole.properties.
*/
public Collection<Object> getListeners() {
return Collections.unmodifiableCollection(listeners);
}
/**
* Returns whether this session has any associated active tunnels.
*

92
guacamole/src/main/java/org/glyptodon/guacamole/net/basic/TunnelRequestService.java
View File

@@ -38,10 +38,6 @@ import org.glyptodon.guacamole.net.auth.ConnectionGroup;
import org.glyptodon.guacamole.net.auth.Directory;
import org.glyptodon.guacamole.net.auth.UserContext;
import org.glyptodon.guacamole.net.basic.rest.auth.AuthenticationService;
import org.glyptodon.guacamole.net.event.TunnelCloseEvent;
import org.glyptodon.guacamole.net.event.TunnelConnectEvent;
import org.glyptodon.guacamole.net.event.listener.TunnelCloseListener;
import org.glyptodon.guacamole.net.event.listener.TunnelConnectListener;
import org.glyptodon.guacamole.protocol.GuacamoleClientInformation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -76,84 +72,6 @@ public class TunnelRequestService {
@Inject
private AuthenticationService authenticationService;
/**
* Notifies all listeners in the given session that a tunnel has been
* connected.
*
* @param session The session associated with the listeners to be notified.
* @param tunnel The tunnel being connected.
* @return true if all listeners are allowing the tunnel to connect,
* or if there are no listeners, and false if any listener is
* canceling the connection. Note that once one listener cancels,
* no other listeners will run.
* @throws GuacamoleException If any listener throws an error while being
* notified. Note that if any listener throws an
* error, the connect is canceled, and no other
* listeners will run.
*/
private boolean notifyConnect(GuacamoleSession session, GuacamoleTunnel tunnel)
throws GuacamoleException {
// Build event for auth success
TunnelConnectEvent event = new TunnelConnectEvent(
session.getUserContext(),
session.getCredentials(),
tunnel);
// Notify all listeners
for (Object listener : session.getListeners()) {
if (listener instanceof TunnelConnectListener) {
// Cancel immediately if hook returns false
if (!((TunnelConnectListener) listener).tunnelConnected(event))
return false;
}
}
return true;
}
/**
* Notifies all listeners in the given session that a tunnel has been
* closed.
*
* @param session The session associated with the listeners to be notified.
* @param tunnel The tunnel being closed.
* @return true if all listeners are allowing the tunnel to close,
* or if there are no listeners, and false if any listener is
* canceling the close. Note that once one listener cancels,
* no other listeners will run.
* @throws GuacamoleException If any listener throws an error while being
* notified. Note that if any listener throws an
* error, the close is canceled, and no other
* listeners will run.
*/
private boolean notifyClose(GuacamoleSession session, GuacamoleTunnel tunnel)
throws GuacamoleException {
// Build event for auth success
TunnelCloseEvent event = new TunnelCloseEvent(
session.getUserContext(),
session.getCredentials(),
tunnel);
// Notify all listeners
for (Object listener : session.getListeners()) {
if (listener instanceof TunnelCloseListener) {
// Cancel immediately if hook returns false
if (!((TunnelCloseListener) listener).tunnelClosed(event))
return false;
}
}
return true;
}
/**
* Reads and returns the client information provided within the given
* request.
@@ -335,10 +253,6 @@ public class TunnelRequestService {
@Override
public void close() throws GuacamoleException {
// Signal listeners
if (!notifyClose(session, this))
throw new GuacamoleException("Tunnel close canceled by listener.");
session.removeTunnel(getUUID().toString());
// Close if no exception due to listener
@@ -348,12 +262,6 @@ public class TunnelRequestService {
};
// Notify listeners about connection
if (!notifyConnect(session, monitoredTunnel)) {
logger.info("Successful connection canceled by hook.");
return null;
}
// Associate tunnel with session
session.addTunnel(monitoredTunnel);
return monitoredTunnel;

12
guacamole/src/main/java/org/glyptodon/guacamole/net/basic/properties/BasicGuacamoleProperties.java
View File

@@ -63,18 +63,6 @@ public class BasicGuacamoleProperties {
};
/**
* The comma-separated list of all classes to use as event listeners. This
* property is currently supported, but deprecated in favor of declared
* event listeners within extension manifests.
*/
public static final EventListenersProperty EVENT_LISTENERS = new EventListenersProperty() {
@Override
public String getName() { return "event-listeners"; }
};
/**
* The session timeout for the API, in minutes.
*/

75
guacamole/src/main/java/org/glyptodon/guacamole/net/basic/properties/EventListenersProperty.java
View File

@@ -1,75 +0,0 @@
/*
* Copyright (C) 2013 Glyptodon LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.glyptodon.guacamole.net.basic.properties;
import java.util.ArrayList;
import java.util.Collection;
import org.glyptodon.guacamole.GuacamoleException;
import org.glyptodon.guacamole.net.basic.GuacamoleClassLoader;
import org.glyptodon.guacamole.properties.GuacamoleProperty;
/**
* A GuacamoleProperty whose value is a comma-separated list of class names,
* where each class will be used as a listener for events. This type of
* property is deprecated in favor of declaring event listeners within
* extension manifests.
*
* @author Michael Jumper
*/
@SuppressWarnings("deprecation")
public abstract class EventListenersProperty implements GuacamoleProperty<Collection<Class>> {
@Override
public Collection<Class> parseValue(String classNameList) throws GuacamoleException {
// If no property provided, return null.
if (classNameList == null)
return null;
// Parse list
String[] classNames = classNameList.split(",[\\s]*");
// Fill list of classes
Collection<Class> listeners = new ArrayList<Class>();
try {
// Load all classes in list
for (String className : classNames) {
Class clazz = GuacamoleClassLoader.getInstance().loadClass(className);
listeners.add(clazz);
}
}
catch (ClassNotFoundException e) {
throw new GuacamoleException("Listener class not found.", e);
}
catch (SecurityException e) {
throw new GuacamoleException("Security settings prevent loading of listener class.", e);
}
return listeners;
}
}