RoomInfo(DiscoverInfo info) {
super();
this.room = info.getFrom();
// Get the information based on the discovered features
this.membersOnly = info.containsFeature("muc_membersonly");
this.moderated = info.containsFeature("muc_moderated");
this.nonanonymous = info.containsFeature("muc_nonanonymous");
this.passwordProtected = info.containsFeature("muc_passwordprotected");
this.persistent = info.containsFeature("muc_persistent");
// Get the information based on the discovered extended information
Form form = Form.getFormFrom(info);
if (form != null) {
FormField descField = form.getField("muc#roominfo_description");
this.description =
(descField == null || !(descField.getValues().hasNext()))
? ""
: descField.getValues().next();
FormField subjField = form.getField("muc#roominfo_subject");
this.subject =
(subjField == null || !(subjField.getValues().hasNext()))
? ""
: subjField.getValues().next();
FormField occCountField = form.getField("muc#roominfo_occupants");
this.occupantsCount =
occCountField == null ? -1 : Integer.parseInt(occCountField.getValues().next());
}
}
/**
* The workgroup service may be configured to send email. This queries the Workgroup Service to
* see if the email service has been configured and is available.
*
* @return true if the email service is available, otherwise return false.
*/
public boolean isEmailAvailable() {
ServiceDiscoveryManager discoManager = ServiceDiscoveryManager.getInstanceFor(connection);
try {
String workgroupService = StringUtils.parseServer(workgroupJID);
DiscoverInfo infoResult = discoManager.discoverInfo(workgroupService);
return infoResult.containsFeature("jive:email:provider");
} catch (XMPPException e) {
return false;
}
}
/**
* Returns true if XMPP Carbons are supported by the server.
*
* @return true if supported
*/
public boolean isSupportedByServer() {
Connection connection = weakRefConnection.get();
try {
DiscoverInfo result =
ServiceDiscoveryManager.getInstanceFor(connection)
.discoverInfo(connection.getServiceName());
return result.containsFeature(CarbonExtension.NAMESPACE);
} catch (XMPPException e) {
return false;
}
}
/**
* Returns the address of the multiple recipients service. To obtain such address service
* discovery is going to be used on the connected server and if none was found then another
* attempt will be tried on the server items. The discovered information is going to be cached for
* 24 hours.
*
* @param connection the connection to use for disco. The connected server is going to be queried.
* @return the address of the multiple recipients service or <tt>null</tt> if none was found.
*/
private static String getMultipleRecipienServiceAddress(Connection connection) {
String serviceName = connection.getServiceName();
String serviceAddress = (String) services.get(serviceName);
if (serviceAddress == null) {
synchronized (services) {
serviceAddress = (String) services.get(serviceName);
if (serviceAddress == null) {
// Send the disco packet to the server itself
try {
DiscoverInfo info =
ServiceDiscoveryManager.getInstanceFor(connection).discoverInfo(serviceName);
// Check if the server supports JEP-33
if (info.containsFeature("http://jabber.org/protocol/address")) {
serviceAddress = serviceName;
} else {
// Get the disco items and send the disco packet to each server item
DiscoverItems items =
ServiceDiscoveryManager.getInstanceFor(connection).discoverItems(serviceName);
for (Iterator<DiscoverItems.Item> it = items.getItems(); it.hasNext(); ) {
DiscoverItems.Item item = it.next();
info =
ServiceDiscoveryManager.getInstanceFor(connection)
.discoverInfo(item.getEntityID(), item.getNode());
if (info.containsFeature("http://jabber.org/protocol/address")) {
serviceAddress = serviceName;
break;
}
}
}
// Cache the discovered information
services.put(serviceName, serviceAddress == null ? "" : serviceAddress);
} catch (XMPPException e) {
LOGGER.log(Level.SEVERE, "Error occurred retrieving multiple recipients service", e);
}
}
}
}
return "".equals(serviceAddress) ? null : serviceAddress;
}
/** * Returns true if the server supports publishing of items. A client may wish to publish items to * the server so that the server can provide items associated to the client. These items will be * returned by the server whenever the server receives a disco request targeted to the bare * address of the client (i.e. [email protected]). * * @param DiscoverInfo the discover info packet to check. * @return true if the server supports publishing of items. */ public static boolean canPublishItems(DiscoverInfo info) { return info.containsFeature("http://jabber.org/protocol/disco#publish"); }
/**
* Find all services under the users service that provide a given feature.
*
* @param feature the feature to search for
* @param stopOnFirst if true, stop searching after the first service was found
* @param useCache if true, query a cache first to avoid network I/O
* @return a possible empty list of services providing the given feature
* @throws NoResponseException
* @throws XMPPErrorException
* @throws NotConnectedException
*/
public List<String> findServices(String feature, boolean stopOnFirst, boolean useCache)
throws NoResponseException, XMPPErrorException, NotConnectedException {
List<String> serviceAddresses = null;
String serviceName = connection().getServiceName();
if (useCache) {
serviceAddresses = (List<String>) services.get(feature);
if (serviceAddresses != null) {
return serviceAddresses;
}
}
serviceAddresses = new LinkedList<String>();
// Send the disco packet to the server itself
DiscoverInfo info;
try {
info = discoverInfo(serviceName);
} catch (XMPPErrorException e) {
// Be extra robust here: Return the empty linked list and log this situation
LOGGER.log(Level.WARNING, "Could not discover information about service", e);
return serviceAddresses;
}
// Check if the server supports XEP-33
if (info.containsFeature(feature)) {
serviceAddresses.add(serviceName);
if (stopOnFirst) {
if (useCache) {
// Cache the discovered information
services.put(feature, serviceAddresses);
}
return serviceAddresses;
}
}
DiscoverItems items;
try {
// Get the disco items and send the disco packet to each server item
items = discoverItems(serviceName);
} catch (XMPPErrorException e) {
LOGGER.log(Level.WARNING, "Could not discover items about service", e);
return serviceAddresses;
}
for (DiscoverItems.Item item : items.getItems()) {
try {
// TODO is it OK here in all cases to query without the node attribute?
// MultipleRecipientManager queried initially also with the node attribute, but this
// could be simply a fault instead of intentional.
info = discoverInfo(item.getEntityID());
} catch (XMPPErrorException | NoResponseException e) {
// Don't throw this exceptions if one of the server's items fail
LOGGER.log(
Level.WARNING,
"Exception while discovering info for feature "
+ feature
+ " of "
+ item.getEntityID()
+ " node: "
+ item.getNode(),
e);
continue;
}
if (info.containsFeature(feature)) {
serviceAddresses.add(item.getEntityID());
if (stopOnFirst) {
break;
}
}
}
if (useCache) {
// Cache the discovered information
services.put(feature, serviceAddresses);
}
return serviceAddresses;
}
/**
* Queries the remote entity for it's features and returns true if the given feature is found.
*
* @param jid the JID of the remote entity
* @param feature
* @return true if the entity supports the feature, false otherwise
* @throws XMPPErrorException
* @throws NoResponseException
* @throws NotConnectedException
*/
public boolean supportsFeature(String jid, String feature)
throws NoResponseException, XMPPErrorException, NotConnectedException {
DiscoverInfo result = discoverInfo(jid);
return result.containsFeature(feature);
}