/**
* Add a record telling what entity caps node a user has.
*
* @param user the user (Full JID)
* @param node the node (of the caps packet extension)
* @param hash the hashing algorithm used to calculate <tt>ver</tt>
* @param ver the version (of the caps packet extension)
* @param ext the ext (of the caps packet extension)
* @param online indicates if the user is online
*/
private void addUserCapsNode(
String user, String node, String hash, String ver, String ext, boolean online) {
if ((user != null) && (node != null) && (hash != null) && (ver != null)) {
Caps caps = userCaps.get(user);
if ((caps == null)
|| !caps.node.equals(node)
|| !caps.hash.equals(hash)
|| !caps.ver.equals(ver)) {
caps = new Caps(node, hash, ver, ext);
userCaps.put(user, caps);
} else return;
// Fire userCapsNodeAdded.
UserCapsNodeListener[] listeners;
synchronized (userCapsNodeListeners) {
listeners = userCapsNodeListeners.toArray(NO_USER_CAPS_NODE_LISTENERS);
}
if (listeners.length != 0) {
String nodeVer = caps.getNodeVer();
for (UserCapsNodeListener listener : listeners)
listener.userCapsNodeAdded(user, nodeVer, online);
}
}
}
@Override
public void disconnected(boolean onError) {
final XMPPConnection connection = myFacade.getConnection();
LOG.info("Jabber disconnected: " + connection.getUser());
connection.removePacketListener(mySubscribeListener);
mySubscribeListener = null;
connection.removePacketListener(myMessageListener);
myMessageListener = null;
final Roster roster = connection.getRoster();
if (roster != null) {
roster.removeRosterListener(myRosterListener);
}
myRosterListener = null;
myIDEtalkUsers.clear();
myUser2Presence.clear();
myUser2Thread.clear();
if (onError && reconnectEnabledAndNotStarted()) {
LOG.warn(getMsg("jabber.server.was.disconnected", myReconnectTimeout / 1000));
myReconnectProcess = myIdeFacade.runOnPooledThread(new MyReconnectRunnable());
}
}
/**
* Returns the discovered information of a given XMPP entity addressed by its JID.
*
* @param entityID the address of the XMPP entity.
* @return the discovered information.
* @throws XMPPException if the operation failed for some reason.
*/
public DiscoverInfo discoverInfo(String entityID) throws XMPPException {
// Check if the have it cached in the Entity Capabilities Manager
DiscoverInfo info = discoverInfoByCaps(entityID);
if (info != null) {
return info;
} else {
// If the caps node is known, use it in the request.
String node = null;
if (capsManager != null) {
// Get the newest node#version
node = capsManager.getNodeVersionByUser(entityID);
}
// Check if we cached DiscoverInfo for nonCaps entity
if (cacheNonCaps && node == null && nonCapsCache.containsKey(entityID)) {
return nonCapsCache.get(entityID);
}
// Discover by requesting from the remote client
info = discoverInfo(entityID, node);
// If the node version is known, store the new entry.
if (node != null && capsManager != null) {
EntityCapsManager.addDiscoverInfoByNode(node, info);
}
// If this is a non caps entity store the discover in nonCapsCache map
else if (cacheNonCaps && node == null) {
nonCapsCache.put(entityID, info);
}
return info;
}
}
/**
* Remove records telling what entity caps node a contact has.
*
* @param contact the contact
*/
public void removeContactCapsNode(Contact contact) {
Caps caps = null;
String lastRemovedJid = null;
Iterator<String> iter = userCaps.keySet().iterator();
while (iter.hasNext()) {
String jid = iter.next();
if (StringUtils.parseBareAddress(jid).equals(contact.getAddress())) {
caps = userCaps.get(jid);
lastRemovedJid = jid;
iter.remove();
}
}
// fire only for the last one, at the end the event out
// of the protocol will be one and for the contact
if (caps != null) {
UserCapsNodeListener[] listeners;
synchronized (userCapsNodeListeners) {
listeners = userCapsNodeListeners.toArray(NO_USER_CAPS_NODE_LISTENERS);
}
if (listeners.length != 0) {
String nodeVer = caps.getNodeVer();
for (UserCapsNodeListener listener : listeners)
listener.userCapsNodeRemoved(lastRemovedJid, nodeVer, false);
}
}
}
String getThreadId(User user) {
String id = myUser2Thread.get(user.getName());
if (id == null) {
id = myThreadIdPrefix + myCurrentThreadId++;
myUser2Thread.put(user.getName(), id);
}
return id;
}
@Override
public UserPresence getUserPresence(User user) {
UserPresence presence = myUser2Presence.get(user);
if (presence == null) {
presence = new UserPresence(false);
myUser2Presence.put(user, presence);
}
return presence;
}
/**
* Returns the ServiceDiscoveryManager instance associated with a given Connection.
*
* @param connection the connection used to look for the proper ServiceDiscoveryManager.
* @return the ServiceDiscoveryManager associated with a given Connection.
*/
public static synchronized ServiceDiscoveryManager getInstanceFor(Connection connection) {
ServiceDiscoveryManager sdm = instances.get(connection);
if (sdm == null) {
sdm = new ServiceDiscoveryManager(connection);
}
return sdm;
}
/**
* Add {@link DiscoverInfo} to our caps database.
*
* <p><b>Warning</b>: The specified <tt>DiscoverInfo</tt> is trusted to be valid with respect to
* the specified <tt>Caps</tt> for performance reasons because the <tt>DiscoverInfo</tt> should
* have already been validated in order to be used elsewhere anyway.
*
* @param caps the <tt>Caps<tt/> i.e. the node, the hash and the ver for which a
* <tt>DiscoverInfo</tt> is to be added to our caps database.
* @param info {@link DiscoverInfo} for the specified <tt>Caps</tt>.
*/
public static void addDiscoverInfoByCaps(Caps caps, DiscoverInfo info) {
cleanupDiscoverInfo(info);
/*
* DiscoverInfo carries the node we're now associating it with a
* specific node so we'd better keep them in sync.
*/
info.setNode(caps.getNodeVer());
synchronized (caps2discoverInfo) {
DiscoverInfo oldInfo = caps2discoverInfo.put(caps, info);
/*
* If the specified info is a new association for the specified
* node, remember it across application instances in order to not
* query for it over the network.
*/
if ((oldInfo == null) || !oldInfo.equals(info)) {
String xml = info.getChildElementXML();
if ((xml != null) && (xml.length() != 0)) {
getConfigService().setProperty(getCapsPropertyName(caps), xml);
}
}
}
}
/**
* Maps the specified <tt>address</tt> to <tt>jid</tt>. The point of this method is to allow us to
* send all messages destined to the contact with the specified <tt>address</tt> to the
* <tt>jid</tt> that they last contacted us from.
*
* @param threadID the threadID of conversation.
* @param jid the jid (i.e. address/resource) that the contact with the specified <tt>address</tt>
* last contacted us from.
*/
private void putJidForAddress(String jid, String threadID) {
synchronized (jids) {
purgeOldJids();
StoredThreadID ta = jids.get(jid);
if (ta == null) {
ta = new StoredThreadID();
jids.put(jid, ta);
}
recentJIDForAddress.put(StringUtils.parseBareAddress(jid), jid);
ta.lastUpdatedTime = System.currentTimeMillis();
ta.threadID = threadID;
}
}
/**
* Returns the last jid that the party with the specified <tt>address</tt> contacted us from or
* <tt>null</tt>(or bare jid) if we don't have a jid for the specified <tt>address</tt> yet. The
* method would also purge all entries that haven't seen any activity (i.e. no one has tried to
* get or remap it) for a delay longer than <tt>JID_INACTIVITY_TIMEOUT</tt>.
*
* @param jid the <tt>jid</tt> that we'd like to obtain a threadID for.
* @return the last jid that the party with the specified <tt>address</tt> contacted us from or
* <tt>null</tt> if we don't have a jid for the specified <tt>address</tt> yet.
*/
String getThreadIDForAddress(String jid) {
synchronized (jids) {
purgeOldJids();
StoredThreadID ta = jids.get(jid);
if (ta == null) return null;
ta.lastUpdatedTime = System.currentTimeMillis();
return ta.threadID;
}
}
/**
* Remove from our <tt>jids</tt> map all entries that have not seen any activity (i.e. neither
* outgoing nor incoming messags) for more than JID_INACTIVITY_TIMEOUT. Note that this method is
* not synchronous and that it is only meant for use by the {@link #getThreadIDForAddress(String)}
* and {@link #putJidForAddress(String, String)}
*/
private void purgeOldJids() {
long currentTime = System.currentTimeMillis();
Iterator<Map.Entry<String, StoredThreadID>> entries = jids.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry<String, StoredThreadID> entry = entries.next();
StoredThreadID target = entry.getValue();
if (currentTime - target.lastUpdatedTime > JID_INACTIVITY_TIMEOUT) entries.remove();
}
}
/** 发送消息 */
public void sendMessage(String sessionJID, String sessionName, String message, String type)
throws RemoteException {
ChatManager chatManager = ChatManager.getInstanceFor(connection);
Chat chat;
// 查找Chat对策
if (jidChats.containsKey(sessionJID)) {
chat = jidChats.get(sessionJID);
// 创建Chat
} else {
chat = chatManager.createChat(sessionJID, null);
// 添加到集合
jidChats.put(sessionJID, chat);
}
if (chat != null) {
try {
// 发送消息
chat.sendMessage(message);
// 保存聊天记录
ContentValues values = new ContentValues();
values.put(SMSProvider.SMSColumns.BODY, message);
values.put(SMSProvider.SMSColumns.TYPE, type);
values.put(SMSProvider.SMSColumns.TIME, System.currentTimeMillis());
values.put(SMSProvider.SMSColumns.WHO_ID, IM.getString(IM.ACCOUNT_JID));
values.put(SMSProvider.SMSColumns.SESSION_ID, sessionJID);
values.put(SMSProvider.SMSColumns.SESSION_NAME, sessionName);
imService.getContentResolver().insert(SMSProvider.SMS_URI, values);
} catch (XMPPException e) {
e.printStackTrace();
} catch (SmackException.NotConnectedException e) {
e.printStackTrace();
}
}
}
private void updateUserPresence(String jabberId) {
LOG.debug("Presence changed for " + jabberId);
final User user = myUserModel.findUser(getSimpleId(jabberId), getName());
if (user != null) {
updateIsIDEtalkClient(jabberId, user);
final UserPresence presence = _getUserPresence(user);
IDEtalkEvent event = createPresenceChangeEvent(user, presence);
if (event != null) {
getBroadcaster().doChange(event, () -> myUser2Presence.put(user, presence));
}
}
}
/**
* Determines whether the protocol supports the supplied content type for the given contact.
*
* @param contentType the type we want to check
* @param contact contact which is checked for supported contentType
* @return <tt>true</tt> if the contact supports it and <tt>false</tt> otherwise.
*/
@Override
public boolean isContentTypeSupported(String contentType, Contact contact) {
// by default we support default mime type, for other mimetypes
// method must be overriden
if (contentType.equals(DEFAULT_MIME_TYPE)) return true;
else if (contentType.equals(HTML_MIME_TYPE)) {
String toJID = recentJIDForAddress.get(contact.getAddress());
if (toJID == null) toJID = contact.getAddress();
return jabberProvider.isFeatureListSupported(toJID, HTML_NAMESPACE);
}
return false;
}
/**
* Remove a record telling what entity caps node a user has.
*
* @param user the user (Full JID)
*/
public void removeUserCapsNode(String user) {
Caps caps = userCaps.remove(user);
// Fire userCapsNodeRemoved.
if (caps != null) {
UserCapsNodeListener[] listeners;
synchronized (userCapsNodeListeners) {
listeners = userCapsNodeListeners.toArray(NO_USER_CAPS_NODE_LISTENERS);
}
if (listeners.length != 0) {
String nodeVer = caps.getNodeVer();
for (UserCapsNodeListener listener : listeners)
listener.userCapsNodeRemoved(user, nodeVer, false);
}
}
}
public String getRecentJIDForAddress(String address) {
return recentJIDForAddress.get(address);
}
/**
* Gets the <tt>Caps</tt> i.e. the node, the hash and the ver of a user.
*
* @param user the user (Full JID)
* @return the <tt>Caps</tt> i.e. the node, the hash and the ver of <tt>user</tt>
*/
public Caps getCapsByUser(String user) {
return userCaps.get(user);
}
/**
* Get the discover info given a user name. The discover info is returned if the user has a
* node#ver associated with it and the node#ver has a discover info associated with it.
*
* @param user user name (Full JID)
* @return the discovered info
*/
public DiscoverInfo getDiscoverInfoByUser(String user) {
Caps caps = userCaps.get(user);
return (caps == null) ? null : getDiscoverInfoByCaps(caps);
}
/**
* Retrieve DiscoverInfo for a specific node.
*
* @param caps the <tt>Caps</tt> i.e. the node, the hash and the ver
* @return The corresponding DiscoverInfo or null if none is known.
*/
public static DiscoverInfo getDiscoverInfoByCaps(Caps caps) {
synchronized (caps2discoverInfo) {
DiscoverInfo discoverInfo = caps2discoverInfo.get(caps);
/*
* If we don't have the discoverInfo in the runtime cache yet, we
* may have it remembered in a previous application instance.
*/
if (discoverInfo == null) {
ConfigurationService configurationService = getConfigService();
String capsPropertyName = getCapsPropertyName(caps);
String xml = configurationService.getString(capsPropertyName);
if ((xml != null) && (xml.length() != 0)) {
IQProvider discoverInfoProvider =
(IQProvider)
ProviderManager.getInstance()
.getIQProvider("query", "http://jabber.org/protocol/disco#info");
if (discoverInfoProvider != null) {
XmlPullParser parser = new MXParser();
try {
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
parser.setInput(new StringReader(xml));
// Start the parser.
parser.next();
} catch (XmlPullParserException xppex) {
parser = null;
} catch (IOException ioex) {
parser = null;
}
if (parser != null) {
try {
discoverInfo = (DiscoverInfo) discoverInfoProvider.parseIQ(parser);
} catch (Exception ex) {
}
if (discoverInfo != null) {
if (caps.isValid(discoverInfo)) caps2discoverInfo.put(caps, discoverInfo);
else {
logger.error(
"Invalid DiscoverInfo for " + caps.getNodeVer() + ": " + discoverInfo);
/*
* The discoverInfo doesn't seem valid
* according to the caps which means that we
* must have stored invalid information.
* Delete the invalid information in order
* to not try to validate it again.
*/
configurationService.removeProperty(capsPropertyName);
}
}
}
}
}
}
return discoverInfo;
}
}
/**
* Removes the NodeInformationProvider responsible for providing information (ie items) related to
* a given node. This means that no more information will be available for the specified node.
*
* <p>In MUC, a node could be 'http://jabber.org/protocol/muc#rooms' which means that the
* NodeInformationProvider will provide information about the rooms where the user has joined.
*
* @param node the node to remove the associated NodeInformationProvider.
*/
public void removeNodeInformationProvider(String node) {
nodeInformationProviders.remove(node);
}
/**
* Sets the NodeInformationProvider responsible for providing information (ie items) related to a
* given node. Every time this client receives a disco request regarding the items of a given
* node, the provider associated to that node will be the responsible for providing the requested
* information.
*
* <p>In MUC, a node could be 'http://jabber.org/protocol/muc#rooms' which means that the
* NodeInformationProvider will provide information about the rooms where the user has joined.
*
* @param node the node whose items will be provided by the NodeInformationProvider.
* @param listener the NodeInformationProvider responsible for providing items related to the
* node.
*/
public void setNodeInformationProvider(String node, NodeInformationProvider listener) {
nodeInformationProviders.put(node, listener);
}
/**
* Returns the NodeInformationProvider responsible for providing information (ie items) related to
* a given node or <tt>null</null> if none.
*
* <p>In MUC, a node could be 'http://jabber.org/protocol/muc#rooms' which means that the
* NodeInformationProvider will provide information about the rooms where the user has joined.
*
* @param node the node that contains items associated with an entity not addressable as a JID.
* @return the NodeInformationProvider responsible for providing information related to a given
* node.
*/
private NodeInformationProvider getNodeInformationProvider(String node) {
if (node == null) {
return null;
}
return nodeInformationProviders.get(node);
}
/**
* 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);
}
/**
* Returns the ServiceDiscoveryManager instance associated with a given connection.
*
* @param connection the connection used to look for the proper ServiceDiscoveryManager.
* @return the ServiceDiscoveryManager associated with a given connection.
*/
public static ServiceDiscoveryManager getInstanceFor(Connection connection) {
return instances.get(connection);
}
/**
* Creates a new ServiceDiscoveryManager for a given Connection. This means that the service
* manager will respond to any service discovery request that the connection may receive.
*
* @param connection the connection to which a ServiceDiscoveryManager is going to be created.
*/
private ServiceDiscoveryManager(Connection connection) {
this.connection = new WeakReference<Connection>(connection);
// Register the new instance and associate it with the connection
instances.put(connection, this);
addFeature(DiscoverInfo.NAMESPACE);
addFeature(DiscoverItems.NAMESPACE);
// 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) {
Connection connection = ServiceDiscoveryManager.this.connection.get();
if (connection == null) return;
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, add node items
response.addItems(nodeInformationProvider.getNodeItems());
// Add packet extensions
response.addExtensions(nodeInformationProvider.getNodePacketExtensions());
} 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) {
Connection connection = ServiceDiscoveryManager.this.connection.get();
if (connection == null) return;
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 only if "node" is null
// and if the request was not send to a node. If Entity Caps are
// enabled the client's identity and features are may also added
// if the right node is chosen
if (discoverInfo.getNode() == null) {
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
response.addFeatures(nodeInformationProvider.getNodeFeatures());
// Add node identities
response.addIdentities(nodeInformationProvider.getNodeIdentities());
// Add packet extensions
response.addExtensions(nodeInformationProvider.getNodePacketExtensions());
} 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);
}
/**
* 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
}
});
// 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 only if "node" is null
if (discoverInfo.getNode() == null) {
// Set this client identity
DiscoverInfo.Identity identity =
new DiscoverInfo.Identity("client", getIdentityName());
identity.setType(getIdentityType());
response.addIdentity(identity);
// Add the registered features to the response
synchronized (features) {
for (Iterator<String> it = getFeatures(); it.hasNext(); ) {
response.addFeature(it.next());
}
}
} 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);
}
