private void processIQ(IQ iq) {
long start = System.currentTimeMillis();
Element childElement = iq.getChildElement();
String namespace = childElement.getNamespaceURI();
// 构造返回dom
IQ reply = IQ.createResultIQ(iq);
Element childElementCopy = childElement.createCopy();
reply.setChildElement(childElementCopy);
if (XConstants.PROTOCOL_DISCO_INFO.equals(namespace)) {
generateDisco(childElementCopy); // 构造disco反馈信息
if (LOG.isInfoEnabled()) {
LOG.info(
"[spend time:{}ms],reqId: {},IRComponent服务发现,response:{}",
System.currentTimeMillis() - start,
iq.getID(),
reply.toXML());
}
}
try {
ComponentManagerFactory.getComponentManager().sendPacket(this, reply);
} catch (Throwable t) {
LOG.error(
"[spend time:{}ms],reqId: {},IRComponent IQ处理异常! iq:{},replay:{}",
System.currentTimeMillis() - start,
iq.getID(),
reply.toXML(),
t);
}
}
public String getRelatedNodeForRemotePacket(IQ packet) {
String id = null;
if (nodeMap.containsKey(packet.getID())) {
id = (String) nodeMap.get(packet.getID());
nodeMap.remove(packet.getID());
}
return id;
}
public void passResponseToRequester(IQ packet) throws Exception {
if (!sentRemotePackets.containsKey(packet.getID())) {
throw new UnknownFederatedPacketException(
"Can not find original requesting packet! (ID:" + packet.getID() + ")");
}
String uniqueId = packet.getID();
packet.setID(idMap.get(uniqueId));
packet.setTo((JID) sentRemotePackets.get(uniqueId));
packet.setFrom(localServer);
sentRemotePackets.remove(packet.getID());
idMap.remove(uniqueId);
component.sendPacket(packet);
}
public void receivedAnswer(IQ packet) {
String packetId = packet.getID();
if (isValid(packet)) {
// The packet was validated, so it can be added to the Entity
// Capabilities cache map.
// Add the resolved identities and features to the entity
// EntityCapabilitiesManager.capabilities object and add it
// to the cache map...
EntityCapabilities caps = verAttributes.get(packetId);
// Store identities.
List<String> identities = getIdentitiesFrom(packet);
for (String identity : identities) {
caps.addIdentity(identity);
}
// Store features.
List<String> features = getFeaturesFrom(packet);
for (String feature : features) {
caps.addFeature(feature);
}
entityCapabilitiesMap.put(caps.getVerAttribute(), caps);
entityCapabilitiesUserMap.put(packet.getFrom(), caps.getVerAttribute());
}
// Remove cached 'ver' attribute.
verAttributes.remove(packetId);
}
@Override
public IQ query(Component component, IQ packet, long timeout) throws ComponentException {
final LinkedBlockingQueue<IQ> answer = new LinkedBlockingQueue<>(8);
XMPPServer.getInstance()
.getIQRouter()
.addIQResultListener(
packet.getID(),
new IQResultListener() {
@Override
public void receivedAnswer(IQ packet) {
answer.offer(packet);
}
@Override
public void answerTimeout(String packetId) {
Log.warn(
"An answer to a previously sent IQ stanza was never received. Packet id: "
+ packetId);
}
});
sendPacket(component, packet);
IQ reply = null;
try {
reply = answer.poll(timeout, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
// Ignore
}
return reply;
}
public void process(Presence packet) {
// Ignore unavailable presences
if (Presence.Type.unavailable == packet.getType()) {
return;
}
// Examine the packet and check if it has caps info,
// if not -- do nothing by returning.
Element capsElement = packet.getChildElement("c", "http://jabber.org/protocol/caps");
if (capsElement == null) {
return;
}
// Examine the packet and check if it's in legacy format (pre version 1.4
// of XEP-0115). If so, do nothing by returning.
// TODO: if this packet is in legacy format, we SHOULD check the 'node',
// 'ver', and 'ext' combinations as specified in the archived version
// 1.3 of the specification, and cache the results. See JM-1447
final String hashAttribute = capsElement.attributeValue("hash");
if (hashAttribute == null || hashAttribute.trim().length() == 0) {
return;
}
// Examine the packet and check if it has and a 'ver' hash
// if not -- do nothing by returning.
final String newVerAttribute = capsElement.attributeValue("ver");
if (newVerAttribute == null || newVerAttribute.trim().length() == 0) {
return;
}
// Check to see if the 'ver' hash is already in our cache.
if (isInCapsCache(newVerAttribute)) {
// The 'ver' hash is in the cache already, so let's update the
// entityCapabilitiesUserMap for the user that sent the caps
// packet.
entityCapabilitiesUserMap.put(packet.getFrom(), newVerAttribute);
} else {
// The 'ver' hash is not in the cache so send out a disco#info query
// so that we may begin recognizing this 'ver' hash.
IQ iq = new IQ(IQ.Type.get);
iq.setTo(packet.getFrom());
String serverName = XmppServer.getInstance().getServerInfo().getXMPPDomain();
iq.setFrom(serverName);
iq.setChildElement("query", "http://jabber.org/protocol/disco#info");
String packetId = iq.getID();
final EntityCapabilities caps = new EntityCapabilities();
caps.setHashAttribute(hashAttribute);
caps.setVerAttribute(newVerAttribute);
verAttributes.put(packetId, caps);
final IQRouter iqRouter = XmppServer.getInstance().getIQRouter();
iqRouter.addIQResultListener(packetId, this);
iqRouter.route(iq);
}
}
/**
* Determines whether or not the packet received from a disco#info result was valid by comparing
* its 'ver' hash (identites+features encapsulated hash) with the 'ver' hash of the original caps
* packet that the disco#info query was sent on behalf of.
*
* @param packet the disco#info result packet.
* @return true if the packet's generated 'ver' hash matches the 'ver' hash of the original caps
* packet.
*/
private boolean isValid(IQ packet) {
final EntityCapabilities original = verAttributes.get(packet.getID());
if (original == null) {
return false;
}
final String newVerHash = generateVerHash(packet, original.getHashAttribute());
return newVerHash.equals(original.getVerAttribute());
}
/**
* Creates an error response for a given IQ request.
*
* @param request
* @param message
* @param condition
* @param type
* @return
*/
public static IQ createErrorResponse(
final IQ request, final String message, Condition condition, Type type) {
final IQ result = request.createCopy();
result.setID(request.getID());
result.setFrom(request.getTo());
result.setTo(request.getFrom());
PacketError e = new PacketError(condition, type);
if (message != null) {
e.setText(message);
}
result.setError(e);
return result;
}
/**
* Sends an IQ packet to the Clearspace external component and returns the IQ packet returned by
* CS or <tt>null</tt> if no answer was received before the specified timeout.
*
* @param packet IQ packet to send.
* @param timeout milliseconds to wait before timing out.
* @return IQ packet returned by Clearspace responsing the packet we sent.
*/
public IQ query(final IQ packet, int timeout) {
// Complain if FROM is empty
if (packet.getFrom() == null) {
throw new IllegalStateException("IQ packets with no FROM cannot be sent to Clearspace");
}
// If CS is not connected then return null
if (clearspaces.isEmpty()) {
return null;
}
// Set the target address to the IQ packet. Roate list so we distribute load
String component;
synchronized (clearspaces) {
component = clearspaces.get(0);
Collections.rotate(clearspaces, 1);
}
packet.setTo(component);
final LinkedBlockingQueue<IQ> answer = new LinkedBlockingQueue<IQ>(8);
final IQRouter router = XMPPServer.getInstance().getIQRouter();
router.addIQResultListener(
packet.getID(),
new IQResultListener() {
public void receivedAnswer(IQ packet) {
answer.offer(packet);
}
public void answerTimeout(String packetId) {
Log.warn("No answer from Clearspace was received for IQ stanza: " + packet);
}
});
XMPPServer.getInstance().getIQRouter().route(packet);
IQ reply = null;
try {
reply = answer.poll(timeout, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
// Ignore
}
return reply;
}
@Override
public void query(Component component, IQ packet, IQResultListener listener)
throws ComponentException {
XMPPServer.getInstance().getIQRouter().addIQResultListener(packet.getID(), listener);
sendPacket(component, packet);
}