private void configureConnection(final Connection connection) {
connection.addConnectionListener(
new ConnectionListener() {
@Override
public void connectionClosed() {
cleanup(connection);
}
@Override
public void connectionClosedOnError(Exception e) {
cleanup(connection);
}
@Override
public void reconnectingIn(int seconds) {
// ignore
}
@Override
public void reconnectionFailed(Exception e) {
// ignore
}
@Override
public void reconnectionSuccessful() {
// ignore
}
});
}
/**
* Initializes the packet listeners of the connection that will answer to any service discovery
* request.
*/
private void init() {
// Register the new instance and associate it with the connection
instances.put(connection, this);
// Add a listener to the connection that removes the registered instance when
// the connection is closed
connection.addConnectionListener(
new ConnectionListener() {
public void connectionClosed() {
// Unregister this instance since the connection has been closed
instances.remove(connection);
}
public void connectionClosedOnError(Exception e) {
// ignore
}
public void reconnectionFailed(Exception e) {
// ignore
}
public void reconnectingIn(int seconds) {
// ignore
}
public void reconnectionSuccessful() {
// ignore
}
});
// Intercept presence packages and add caps data when inteded.
// XEP-0115 specifies that a client SHOULD include entity capabilities
// with every presence notification it sends.
PacketFilter capsPacketFilter = new PacketTypeFilter(Presence.class);
PacketInterceptor packetInterceptor =
new PacketInterceptor() {
public void interceptPacket(Packet packet) {
if (capsManager != null) {
String ver = getEntityCapsVersion();
CapsExtension caps = new CapsExtension(capsManager.getNode(), ver, "sha-1");
packet.addExtension(caps);
}
}
};
connection.addPacketInterceptor(packetInterceptor, capsPacketFilter);
// Listen for disco#items requests and answer with an empty result
PacketFilter packetFilter = new PacketTypeFilter(DiscoverItems.class);
PacketListener packetListener =
new PacketListener() {
public void processPacket(Packet packet) {
DiscoverItems discoverItems = (DiscoverItems) packet;
// Send back the items defined in the client if the request is of type GET
if (discoverItems != null && discoverItems.getType() == IQ.Type.GET) {
DiscoverItems response = new DiscoverItems();
response.setType(IQ.Type.RESULT);
response.setTo(discoverItems.getFrom());
response.setPacketID(discoverItems.getPacketID());
response.setNode(discoverItems.getNode());
// Add the defined items related to the requested node. Look for
// the NodeInformationProvider associated with the requested node.
NodeInformationProvider nodeInformationProvider =
getNodeInformationProvider(discoverItems.getNode());
if (nodeInformationProvider != null) {
// Specified node was found
List<DiscoverItems.Item> items = nodeInformationProvider.getNodeItems();
if (items != null) {
for (DiscoverItems.Item item : items) {
response.addItem(item);
}
}
} else if (discoverItems.getNode() != null) {
// Return <item-not-found/> error since client doesn't contain
// the specified node
response.setType(IQ.Type.ERROR);
response.setError(new XMPPError(XMPPError.Condition.item_not_found));
}
connection.sendPacket(response);
}
}
};
connection.addPacketListener(packetListener, packetFilter);
// Listen for disco#info requests and answer the client's supported features
// To add a new feature as supported use the #addFeature message
packetFilter = new PacketTypeFilter(DiscoverInfo.class);
packetListener =
new PacketListener() {
public void processPacket(Packet packet) {
DiscoverInfo discoverInfo = (DiscoverInfo) packet;
// Answer the client's supported features if the request is of the GET type
if (discoverInfo != null && discoverInfo.getType() == IQ.Type.GET) {
DiscoverInfo response = new DiscoverInfo();
response.setType(IQ.Type.RESULT);
response.setTo(discoverInfo.getFrom());
response.setPacketID(discoverInfo.getPacketID());
response.setNode(discoverInfo.getNode());
// Add the client's identity and features if "node" is
// null or our entity caps version.
if (discoverInfo.getNode() == null
|| (capsManager == null
? true
: (capsManager.getNode() + "#" + getEntityCapsVersion())
.equals(discoverInfo.getNode()))) {
addDiscoverInfoTo(response);
} else {
// Disco#info was sent to a node. Check if we have information of the
// specified node
NodeInformationProvider nodeInformationProvider =
getNodeInformationProvider(discoverInfo.getNode());
if (nodeInformationProvider != null) {
// Node was found. Add node features
List<String> features = nodeInformationProvider.getNodeFeatures();
if (features != null) {
for (String feature : features) {
response.addFeature(feature);
}
}
// Add node identities
List<DiscoverInfo.Identity> identities =
nodeInformationProvider.getNodeIdentities();
if (identities != null) {
for (DiscoverInfo.Identity identity : identities) {
response.addIdentity(identity);
}
}
} else {
// Return <item-not-found/> error since specified node was not found
response.setType(IQ.Type.ERROR);
response.setError(new XMPPError(XMPPError.Condition.item_not_found));
}
}
connection.sendPacket(response);
}
}
};
connection.addPacketListener(packetListener, packetFilter);
}
/**
*
*
* <ul>
* <li>Adds listeners to the connection
* <li>Registers the ad-hoc command feature to the ServiceDiscoveryManager
* <li>Registers the items of the feature
* <li>Adds packet listeners to handle execution requests
* <li>Creates and start the session sweeper
* </ul>
*/
private void init() {
// Register the new instance and associate it with the connection
synchronized (instances) {
instances.put(connection, this);
}
// Add a listener to the connection that removes the registered instance
// when the connection is closed
connection.addConnectionListener(
new ConnectionListener() {
public void connectionClosed() {
synchronized (instances) {
instances.remove(connection);
}
}
public void connectionClosedOnError(Exception e) {
synchronized (instances) {
instances.remove(connection);
}
}
public void reconnectionSuccessful() {
synchronized (instances) {
instances.put(connection, AdHocCommandManager.this);
}
}
public void reconnectingIn(int seconds) {}
public void reconnectionFailed(Exception e) {}
});
// Add the feature to the service discovery manage to show that this
// connection supports the AdHoc-Commands protocol.
// This information will be used when another client tries to
// discover whether this client supports AdHoc-Commands or not.
ServiceDiscoveryManager.getInstanceFor(connection).addFeature(DISCO_NAMESPACE);
// Set the NodeInformationProvider that will provide information about
// which AdHoc-Commands are registered, whenever a disco request is
// received
ServiceDiscoveryManager.getInstanceFor(connection)
.setNodeInformationProvider(
discoNode,
new NodeInformationProvider() {
public List<DiscoverItems.Item> getNodeItems() {
List<DiscoverItems.Item> answer = new ArrayList<DiscoverItems.Item>();
Collection<AdHocCommandInfo> commandsList = getRegisteredCommands();
for (AdHocCommandInfo info : commandsList) {
DiscoverItems.Item item = new DiscoverItems.Item(info.getOwnerJID());
item.setName(info.getName());
item.setNode(info.getNode());
answer.add(item);
}
return answer;
}
public List<String> getNodeFeatures() {
return null;
}
public List<Identity> getNodeIdentities() {
return null;
}
});
// The packet listener and the filter for processing some AdHoc Commands
// Packets
PacketListener listener =
new PacketListener() {
public void processPacket(Packet packet) {
AdHocCommandData requestData = (AdHocCommandData) packet;
processAdHocCommand(requestData);
}
};
PacketFilter filter = new PacketTypeFilter(AdHocCommandData.class);
connection.addPacketListener(listener, filter);
// Create a thread to reap sessions. But, we'll only start it later when commands are
// actually registered.
sessionsSweeper =
new Thread(
new Runnable() {
public void run() {
while (true) {
for (String sessionId : executingCommands.keySet()) {
LocalCommand command = executingCommands.get(sessionId);
// Since the command could be removed in the meanwhile
// of getting the key and getting the value - by a
// processed packet. We must check if it still in the
// map.
if (command != null) {
long creationStamp = command.getCreationDate();
// Check if the Session data has expired (default is
// 10 minutes)
// To remove it from the session list it waits for
// the double of the of time out time. This is to
// let
// the requester know why his execution request is
// not accepted. If the session is removed just
// after the time out, then whe the user request to
// continue the execution he will recieved an
// invalid session error and not a time out error.
if (System.currentTimeMillis() - creationStamp > SESSION_TIMEOUT * 1000 * 2) {
// Remove the expired session
executingCommands.remove(sessionId);
}
}
}
try {
Thread.sleep(1000);
} catch (InterruptedException ie) {
// Ignore.
}
}
}
});
sessionsSweeper.setDaemon(true);
}