public static GuacamoleTunnel createTunnel(TunnelRequest request)
throws GuacamoleException {
HttpSession httpSession = request.getSession();
if (httpSession == null)
throw new GuacamoleSecurityException("Cannot connect - user not logged in.");
// Get listeners
final SessionListenerCollection listeners;
try {
listeners = new SessionListenerCollection(httpSession);
}
catch (GuacamoleException e) {
logger.error("Creation of tunnel to guacd aborted: Failed to retrieve listeners: {}", e.getMessage());
logger.debug("Error retrieving listeners.", e);
throw e;
}
// Get ID of connection
String id = request.getParameter("id");
TunnelRequest.IdentifierType id_type = TunnelRequest.IdentifierType.getType(id);
// Do not continue if unable to determine type
if (id_type == null)
throw new GuacamoleClientException("Illegal identifier - unknown type.");
// Remove prefix
id = id.substring(id_type.PREFIX.length());
// Get credentials
final Credentials credentials = AuthenticatingFilter.getCredentials(httpSession);
// Get context
final UserContext context = AuthenticatingFilter.getUserContext(httpSession);
// If no context or no credentials, not logged in
if (context == null || credentials == null)
throw new GuacamoleSecurityException("Cannot connect - user not logged in.");
// Get clipboard
final ClipboardState clipboard = AuthenticatingFilter.getClipboardState(httpSession);
// Get client information
GuacamoleClientInformation info = new GuacamoleClientInformation();
// Set width if provided
String width = request.getParameter("width");
if (width != null)
info.setOptimalScreenWidth(Integer.parseInt(width));
// Set height if provided
String height = request.getParameter("height");
if (height != null)
info.setOptimalScreenHeight(Integer.parseInt(height));
// Set resolution if provided
String dpi = request.getParameter("dpi");
if (dpi != null)
info.setOptimalResolution(Integer.parseInt(dpi));
// Add audio mimetypes
List<String> audio_mimetypes = request.getParameterValues("audio");
if (audio_mimetypes != null)
info.getAudioMimetypes().addAll(audio_mimetypes);
// Add video mimetypes
List<String> video_mimetypes = request.getParameterValues("video");
if (video_mimetypes != null)
info.getVideoMimetypes().addAll(video_mimetypes);
// Create connected socket from identifier
GuacamoleSocket socket;
switch (id_type) {
// Connection identifiers
case CONNECTION: {
// Get connection directory
Directory<String, Connection> directory =
context.getRootConnectionGroup().getConnectionDirectory();
// Get authorized connection
Connection connection = directory.get(id);
if (connection == null) {
logger.info("Connection \"{}\" does not exist for user \"{}\".", id, context.self().getUsername());
throw new GuacamoleSecurityException("Requested connection is not authorized.");
}
// Connect socket
socket = connection.connect(info);
logger.info("User \"{}\" successfully connected to \"{}\".", context.self().getUsername(), id);
break;
}
// Connection group identifiers
case CONNECTION_GROUP: {
// Get connection group directory
Directory<String, ConnectionGroup> directory =
context.getRootConnectionGroup().getConnectionGroupDirectory();
// Get authorized connection group
ConnectionGroup group = directory.get(id);
if (group == null) {
logger.info("Connection group \"{}\" does not exist for user \"{}\".", id, context.self().getUsername());
throw new GuacamoleSecurityException("Requested connection group is not authorized.");
}
// Connect socket
socket = group.connect(info);
logger.info("User \"{}\" successfully connected to group \"{}\".", context.self().getUsername(), id);