/**
* Test if entity caps actually prevent a disco info request and reply
*
* @throws XMPPException
*/
public void testPreventDiscoInfo() throws XMPPException {
con0.addPacketSendingListener(
new PacketListener() {
@Override
public void processPacket(Packet packet) {
discoInfoSend = true;
}
},
new AndFilter(new PacketTypeFilter(DiscoverInfo.class), new IQTypeFilter(IQ.Type.get)));
// add a bogus feature so that con1 ver won't match con0's
sdm1.addFeature(DISCOVER_TEST_FEATURE);
dropCapsCache();
// discover that
DiscoverInfo info = sdm0.discoverInfo(con1.getUser());
// that discovery should cause a disco#info
assertTrue(discoInfoSend);
assertTrue(info.containsFeature(DISCOVER_TEST_FEATURE));
discoInfoSend = false;
// discover that
info = sdm0.discoverInfo(con1.getUser());
// that discovery shouldn't cause a disco#info
assertFalse(discoInfoSend);
assertTrue(info.containsFeature(DISCOVER_TEST_FEATURE));
}
static {
instance = new ConnectionManager();
Application.getInstance().addManager(instance);
SmackConfiguration.setPacketReplyTimeout(PACKET_REPLY_TIMEOUT);
ServiceDiscoveryManager.setIdentityType("handheld");
ServiceDiscoveryManager.setIdentityName(
Application.getInstance().getString(R.string.client_name));
SASLAuthentication.registerSASLMechanism("X-MESSENGER-OAUTH2", XMessengerOAuth2.class);
SASLAuthentication.supportSASLMechanism("X-MESSENGER-OAUTH2");
String path = System.getProperty("javax.net.ssl.trustStore");
if (path == null)
TRUST_STORE_PATH =
System.getProperty("java.home")
+ File.separator
+ "etc"
+ File.separator
+ "security"
+ File.separator
+ "cacerts.bks";
else TRUST_STORE_PATH = path;
Connection.addConnectionCreationListener(
new ConnectionCreationListener() {
@Override
public void connectionCreated(final Connection connection) {
ServiceDiscoveryManager.getInstanceFor(connection).addFeature("sslc2s");
}
});
}
private void browse(String serviceName) {
browsePanel.removeAll();
ServiceDiscoveryManager discoManager = ServiceDiscoveryManager.getInstanceFor(con);
DiscoverItems result;
try {
result = discoManager.discoverItems(serviceName);
} catch (XMPPException e) {
Log.error(e);
return;
}
addAddress(serviceName);
Iterator<DiscoverItems.Item> discoverItems = result.getItems();
while (discoverItems.hasNext()) {
DiscoverItems.Item item = discoverItems.next();
Entity entity = new Entity(item);
browsePanel.add(entity);
}
browsePanel.invalidate();
browsePanel.validate();
browsePanel.repaint();
}
private void browseItem(DiscoverItems.Item discoveredItem) {
addAddress(discoveredItem.getEntityID());
browsePanel.removeAll();
ServiceDiscoveryManager discoManager = ServiceDiscoveryManager.getInstanceFor(con);
DiscoverItems result;
try {
result = discoManager.discoverItems(discoveredItem.getEntityID());
} catch (XMPPException e) {
browsePanel.invalidate();
browsePanel.validate();
browsePanel.repaint();
return;
}
Iterator<DiscoverItems.Item> discoverItems = result.getItems();
List<Entity> list = new ArrayList<Entity>();
while (discoverItems.hasNext()) {
DiscoverItems.Item item = discoverItems.next();
Entity entity = new Entity(item);
browsePanel.add(entity);
list.add(entity);
}
GraphicUtils.makeSameSize((JComponent[]) list.toArray(new JComponent[list.size()]));
browsePanel.invalidate();
browsePanel.validate();
browsePanel.repaint();
}
/** Creates a destination for a service that receives XMPP messages. */
public Destination getDestination(EndpointInfo endpointInfo) throws IOException {
// The node name is the full name of the service.
String nodeName = endpointInfo.getService().getName().toString();
pepProvider.registerPEPParserExtension(nodeName, soapProvider);
PEPDestination dest = new PEPDestination(endpointInfo);
try {
XMPPConnection conn = destinationConnectionFactory.login(endpointInfo);
// Advertise interest in receiving information.
ServiceDiscoveryManager disco = ServiceDiscoveryManager.getInstanceFor(conn);
disco.addFeature(nodeName + "+notify");
// Create destination.
dest.setXmppConnection(conn);
conn.addPacketListener(
dest, new PacketExtensionFilter("event", "http://jabber.org/protocol/pubsub#event"));
} catch (XMPPException e) {
throw new IOException(e);
}
return dest;
}
/**
* Enables or disables the XHTML support on a given connection.
*
* <p>Before starting to send XHTML messages to a user, check that the user can handle XHTML
* messages. Enable the XHTML support to indicate that this client handles XHTML messages.
*
* @param connection the connection where the service will be enabled or disabled
* @param enabled indicates if the service will be enabled or disabled
*/
public static synchronized void setServiceEnabled(Connection connection, boolean enabled) {
if (isServiceEnabled(connection) == enabled) return;
if (enabled) {
ServiceDiscoveryManager.getInstanceFor(connection).addFeature(namespace);
} else {
ServiceDiscoveryManager.getInstanceFor(connection).removeFeature(namespace);
}
}
@Override
protected void setUp() throws Exception {
super.setUp();
SmackConfiguration.setAutoEnableEntityCaps(true);
con0 = getConnection(0);
con1 = getConnection(1);
ecm0 = EntityCapsManager.getInstanceFor(getConnection(0));
ecm1 = EntityCapsManager.getInstanceFor(getConnection(1));
sdm0 = ServiceDiscoveryManager.getInstanceFor(con0);
sdm1 = ServiceDiscoveryManager.getInstanceFor(con1);
letsAllBeFriends();
}
/**
* Get the Discover Information send by your own connection.
*
* @return your own DiscoverInfo
*/
private DiscoverInfo getOwnInformation() {
DiscoverInfo result = new DiscoverInfo();
DiscoverInfo.Identity id =
new DiscoverInfo.Identity("client", ServiceDiscoveryManager.getIdentityName());
id.setType(ServiceDiscoveryManager.getIdentityType());
result.addIdentity(id);
Iterator<String> it = mSdm.getFeatures();
while (it.hasNext()) {
result.addFeature(it.next());
}
return result;
}
public boolean initFileTransport() {
if (connection == null) {
return false;
} else if (fileTransferManager != null) {
return true;
} else {
fileTransferManager = new FileTransferManager(connection);
ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(connection);
if (sdm == null) sdm = new ServiceDiscoveryManager(connection);
sdm.addFeature("http://jabber.org/protocol/disco#info");
sdm.addFeature("jabber:iq:privacy");
FileTransferNegotiator.setServiceEnabled(connection, true);
return true;
}
}
private void initServiceDiscovery() {
// register connection features
ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(mXMPPConnection);
// init Entity Caps manager with storage in app's cache dir
try {
if (capsCacheDir == null) {
capsCacheDir = new File(mService.getCacheDir(), "entity-caps-cache");
capsCacheDir.mkdirs();
EntityCapsManager.setPersistentCache(new SimpleDirectoryPersistentCache(capsCacheDir));
}
} catch (java.io.IOException e) {
Log.e(TAG, "Could not init Entity Caps cache: " + e.getLocalizedMessage());
}
// reference PingManager, set ping flood protection to 10s
PingManager.getInstanceFor(mXMPPConnection).setPingMinimumInterval(10 * 1000);
// set Version for replies
String app_name = mService.getString(org.yaxim.androidclient.R.string.app_name);
String build_revision = mService.getString(org.yaxim.androidclient.R.string.build_revision);
Version.Manager.getInstanceFor(mXMPPConnection)
.setVersion(new Version(app_name, build_revision, "Android"));
// reference DeliveryReceiptManager, add listener
DeliveryReceiptManager dm = DeliveryReceiptManager.getInstanceFor(mXMPPConnection);
dm.enableAutoReceipts();
dm.addReceiptReceivedListener(
new ReceiptReceivedListener() { // DOES NOT WORK IN CARBONS
public void onReceiptReceived(String fromJid, String toJid, String receiptId) {
Log.d(TAG, "got delivery receipt for " + receiptId);
changeMessageDeliveryStatus(receiptId, ChatConstants.DS_ACKED);
}
});
}
/** Discover the features provided by the server. */
private void discoverServerFeatures() {
try {
// jid et server
ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(mAdaptee);
DiscoverInfo info = sdm.discoverInfo(mAdaptee.getServiceName());
Iterator<DiscoverInfo.Identity> it = info.getIdentities();
while (it.hasNext()) {
DiscoverInfo.Identity identity = it.next();
if ("pubsub".equals(identity.getCategory()) && "pep".equals(identity.getType())) {
initPEP();
}
}
} catch (XMPPException e) {
Log.w(TAG, "Unable to discover server features", e);
}
}
public void testCapsChanged() {
String nodeVerBefore = EntityCapsManager.getNodeVersionByJid(con1.getUser());
sdm1.addFeature(DISCOVER_TEST_FEATURE);
String nodeVerAfter = EntityCapsManager.getNodeVersionByJid(con1.getUser());
assertFalse(nodeVerBefore.equals(nodeVerAfter));
}
static void registerSmackProviders() {
ProviderManager pm = ProviderManager.getInstance();
// add IQ handling
pm.addIQProvider("query", "http://jabber.org/protocol/disco#info", new DiscoverInfoProvider());
pm.addIQProvider(
"query", "http://jabber.org/protocol/disco#items", new DiscoverItemsProvider());
// add delayed delivery notifications
pm.addExtensionProvider("delay", "urn:xmpp:delay", new DelayInfoProvider());
pm.addExtensionProvider("x", "jabber:x:delay", new DelayInfoProvider());
// add XEP-0092 Software Version
pm.addIQProvider("query", Version.NAMESPACE, new Version.Provider());
// add carbons and forwarding
pm.addExtensionProvider("forwarded", Forwarded.NAMESPACE, new Forwarded.Provider());
pm.addExtensionProvider("sent", Carbon.NAMESPACE, new Carbon.Provider());
pm.addExtensionProvider("received", Carbon.NAMESPACE, new Carbon.Provider());
// add delivery receipts
pm.addExtensionProvider(
DeliveryReceipt.ELEMENT, DeliveryReceipt.NAMESPACE, new DeliveryReceipt.Provider());
pm.addExtensionProvider(
DeliveryReceiptRequest.ELEMENT,
DeliveryReceipt.NAMESPACE,
new DeliveryReceiptRequest.Provider());
// add XMPP Ping (XEP-0199)
pm.addIQProvider("ping", "urn:xmpp:ping", new PingProvider());
ServiceDiscoveryManager.setDefaultIdentity(YAXIM_IDENTITY);
// XEP-0115 Entity Capabilities
pm.addExtensionProvider("c", "http://jabber.org/protocol/caps", new CapsExtensionProvider());
XmppStreamHandler.addExtensionProviders();
}
public void testLocalEntityCaps() throws InterruptedException {
DiscoverInfo info = EntityCapsManager.getDiscoveryInfoByNodeVer(ecm1.getLocalNodeVer());
assertFalse(info.containsFeature(DISCOVER_TEST_FEATURE));
dropWholeEntityCapsCache();
// This should cause a new presence stanza from con1 with and updated
// 'ver' String
sdm1.addFeature(DISCOVER_TEST_FEATURE);
// Give the server some time to handle the stanza and send it to con0
Thread.sleep(2000);
// The presence stanza should get received by con0 and the data should
// be recorded in the map
// Note that while both connections use the same static Entity Caps
// cache,
// it's assured that *not* con1 added the data to the Entity Caps cache.
// Every time the entities features
// and identities change only a new caps 'ver' is calculated and send
// with the presence stanza
// The other connection has to receive this stanza and record the
// information in order for this test to succeed.
info = EntityCapsManager.getDiscoveryInfoByNodeVer(ecm1.getLocalNodeVer());
assertNotNull(info);
assertTrue(info.containsFeature(DISCOVER_TEST_FEATURE));
}
/**
* Registers a new command with this command manager, which is related to a connection. The
* <tt>node</tt> is an unique identifier of that command for the connection related to this
* command manager. The <tt>name</tt> is the human readeale name of the command. The
* <tt>factory</tt> generates new instances of the command.
*
* @param node the unique identifier of the command.
* @param name the human readable name of the command.
* @param factory a factory to create new instances of the command.
*/
public void registerCommand(String node, final String name, LocalCommandFactory factory) {
AdHocCommandInfo commandInfo = new AdHocCommandInfo(node, name, connection.getUser(), factory);
commands.put(node, commandInfo);
// Set the NodeInformationProvider that will provide information about
// the added command
ServiceDiscoveryManager.getInstanceFor(connection)
.setNodeInformationProvider(
node,
new NodeInformationProvider() {
public List<DiscoverItems.Item> getNodeItems() {
return null;
}
public List<String> getNodeFeatures() {
List<String> answer = new ArrayList<String>();
answer.add(DISCO_NAMESPACE);
// TODO: check if this service is provided by the
// TODO: current connection.
answer.add("jabber:x:data");
return answer;
}
public List<DiscoverInfo.Identity> getNodeIdentities() {
List<DiscoverInfo.Identity> answer = new ArrayList<DiscoverInfo.Identity>();
DiscoverInfo.Identity identity = new DiscoverInfo.Identity("automation", name);
identity.setType("command-node");
answer.add(identity);
return answer;
}
});
}
private void initServiceDiscovery() {
ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(extXMPPConnection);
try {
if (capsCacheDir == null) {
capsCacheDir = new File(service.getCacheDir(), "entity-caps-cache");
capsCacheDir.mkdirs();
EntityCapsManager.setPersistentCache(new SimpleDirectoryPersistentCache(capsCacheDir));
}
} catch (java.io.IOException e) {
Log.e(TAG, "Could not init : " + e.getLocalizedMessage());
}
PingManager.getInstanceFor(extXMPPConnection).setPingMinimumInterval(10 * 1000);
String app_name = service.getString(R.string.app_name);
String build_revision = service.getString(R.string.build_revision);
Version.Manager.getInstanceFor(extXMPPConnection)
.setVersion(new Version(app_name, build_revision, Constant.ANDROID));
DeliveryReceiptManager dm = DeliveryReceiptManager.getInstanceFor(extXMPPConnection);
dm.enableAutoReceipts();
dm.addReceiptReceivedListener(
new ReceiptReceivedListener() { // DOES NOT WORK IN CARBONS
public void onReceiptReceived(String fromJid, String toJid, String receiptId) {
changeMessageDeliveryStatus(receiptId, ChatConstants.DS_ACKED);
}
});
}
public void testEntityCaps() throws XMPPException, InterruptedException {
dropWholeEntityCapsCache();
sdm1.addFeature(DISCOVER_TEST_FEATURE);
Thread.sleep(3000);
DiscoverInfo info = sdm0.discoverInfo(con1.getUser());
assertTrue(info.containsFeature(DISCOVER_TEST_FEATURE));
String u1ver = EntityCapsManager.getNodeVersionByJid(con1.getUser());
assertNotNull(u1ver);
DiscoverInfo entityInfo = EntityCapsManager.caps.get(u1ver);
assertNotNull(entityInfo);
assertEquals(info.toXML(), entityInfo.toXML());
}
/**
* Checks to see if all file transfer related services are enabled on the connection.
*
* @param connection The connection to check
* @return True if all related services are enabled, false if they are not.
*/
public static boolean isServiceEnabled(final Connection connection) {
final ServiceDiscoveryManager manager = ServiceDiscoveryManager.getInstanceFor(connection);
final List<String> namespaces = new ArrayList<String>();
namespaces.addAll(Arrays.asList(NAMESPACE));
namespaces.add(InBandBytestreamManager.NAMESPACE);
if (!IBB_ONLY) {
namespaces.add(Socks5BytestreamManager.NAMESPACE);
}
for (final String namespace : namespaces) {
if (!manager.includesFeature(namespace)) {
return false;
}
}
return true;
}
/**
* Publish the commands to an specific JID.
*
* @param jid the full JID to publish the commands to.
* @throws XMPPException if the operation failed for some reason.
*/
public void publishCommands(String jid) throws XMPPException {
ServiceDiscoveryManager serviceDiscoveryManager =
ServiceDiscoveryManager.getInstanceFor(connection);
// Collects the commands to publish as items
DiscoverItems discoverItems = new DiscoverItems();
Collection<AdHocCommandInfo> xCommandsList = getRegisteredCommands();
for (AdHocCommandInfo info : xCommandsList) {
DiscoverItems.Item item = new DiscoverItems.Item(info.getOwnerJID());
item.setName(info.getName());
item.setNode(info.getNode());
discoverItems.addItem(item);
}
serviceDiscoveryManager.publishItems(jid, discoNode, discoverItems);
}
/**
* Tries to discover if the server of the given XMPPConnection provides also a MUC component. Will
* return the MUCs Component ID if one is found otherwise returns null
*
* @param connection
* @return
* @throws XMPPException
*/
public static String disocverMUC(XMPPConnection connection) throws XMPPException {
ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(connection);
DiscoverItems ditem = sdm.discoverItems(connection.getServiceName());
Iterator<Item> it = ditem.getItems();
while (it.hasNext()) {
Item i = it.next();
DiscoverInfo dinfo = sdm.discoverInfo(i.getEntityID());
Iterator<Feature> itFeatures = dinfo.getFeatures();
while (itFeatures.hasNext()) {
Feature f = itFeatures.next();
if (f.getVar().equals(MUC_FEATURE)) {
return i.getEntityID();
}
}
}
return null;
}
/** * Returns true if the specified user handles XHTML messages. * * @param connection the connection to use to perform the service discovery * @param userID the user to check. A fully qualified xmpp ID, e.g. [email protected] * @return a boolean indicating whether the specified user handles XHTML messages */ public static boolean isServiceEnabled(Connection connection, String userID) { try { DiscoverInfo result = ServiceDiscoveryManager.getInstanceFor(connection).discoverInfo(userID); return result.containsFeature(namespace); } catch (XMPPException e) { e.printStackTrace(); return false; } }
/**
* Returns the number of offline messages for the user of the connection.
*
* @return the number of offline messages for the user of the connection.
* @throws XMPPException If the user is not allowed to make this request or the server does not
* support offline message retrieval.
*/
public int getMessageCount() throws XMPPException {
DiscoverInfo info =
ServiceDiscoveryManager.getInstanceFor(connection).discoverInfo(null, namespace);
Form extendedInfo = Form.getFormFrom(info);
if (extendedInfo != null) {
String value = (String) extendedInfo.getField("number_of_messages").getValues().next();
return Integer.parseInt(value);
}
return 0;
}
/**
* Returns an iterator on <tt>OfflineMessageHeader</tt> that keep information about the offline
* message. The OfflineMessageHeader includes a stamp that could be used to retrieve the complete
* message or delete the specific message.
*
* @return an iterator on <tt>OfflineMessageHeader</tt> that keep information about the offline
* message.
* @throws XMPPException If the user is not allowed to make this request or the server does not
* support offline message retrieval.
*/
public Iterator getHeaders() throws XMPPException {
List answer = new ArrayList();
DiscoverItems items =
ServiceDiscoveryManager.getInstanceFor(connection).discoverItems(null, namespace);
for (Iterator it = items.getItems(); it.hasNext(); ) {
DiscoverItems.Item item = (DiscoverItems.Item) it.next();
answer.add(new OfflineMessageHeader(item));
}
return answer.iterator();
}
/**
* Deletes the session agent account, frees all resources and disconnects the XMPP connection.
*
* @throws org.jivesoftware.smack.XMPPException
*/
public void shutdown() throws XMPPException {
ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(mConnection);
// ServiceDiscovery (feature) http://rn.inf.tu-dresden.de/mobilis
try {
sdm.removeFeature(MobilisManager.discoNamespace);
} catch (Exception e) {
MobilisManager.getLogger().warning("Problem with ServiceDiscoveryManager: " + e.getMessage());
}
// ServiceDiscovery (info+items) http://rn.inf.tu-dresden.de/mobilis#services
try {
sdm.removeNodeInformationProvider(MobilisManager.discoServicesNode);
} catch (Exception e) {
MobilisManager.getLogger()
.warning(
"Problem with NodeInformationProvider: "
+ MobilisManager.discoServicesNode
+ " ("
+ getIdent()
+ ") "
+ e.getMessage());
}
for (MobilisService service : mServices) {
try {
sdm.removeNodeInformationProvider(service.getNode());
service.shutdown();
} catch (Exception e) {
// TODO Auto-generated catch block
}
}
if ((mConnection != null) && mConnection.isConnected()) {
mConnection.removeConnectionListener(this);
mConnection.disconnect();
}
mConnection = null;
// logging
MobilisManager.getLogger().info("Mobilis Agent (" + getIdent() + ") shut down.");
}
private void populateFeatureSet() {
final ServiceDiscoveryManager disco =
ServiceDiscoveryManager.getInstanceFor(ChatsyManager.getConnection());
final DiscoverItems items = ChatsyManager.getSessionManager().getDiscoveredItems();
Iterator<DiscoverItems.Item> iter = items.getItems();
while (iter.hasNext()) {
DiscoverItems.Item item = iter.next();
String entity = item.getEntityID();
if (entity != null) {
if (entity.startsWith("manager.")) {
chatsyManagerInstalled = true;
try {
featureInfo = disco.discoverInfo(item.getEntityID());
} catch (XMPPException e) {
Log.error("Error while retrieving feature list for ChatsyManager.", e);
}
}
}
}
}
/**
* Enable the Jabber services related to file transfer on the particular connection.
*
* @param connection The connection on which to enable or disable the services.
* @param isEnabled True to enable, false to disable.
*/
public static void setServiceEnabled(final Connection connection, final boolean isEnabled) {
final ServiceDiscoveryManager manager = ServiceDiscoveryManager.getInstanceFor(connection);
final List<String> namespaces = new ArrayList<String>();
namespaces.addAll(Arrays.asList(NAMESPACE));
namespaces.add(InBandBytestreamManager.NAMESPACE);
if (!IBB_ONLY) {
namespaces.add(Socks5BytestreamManager.NAMESPACE);
}
for (final String namespace : namespaces) {
if (isEnabled) {
if (!manager.includesFeature(namespace)) {
manager.addFeature(namespace);
}
} else {
manager.removeFeature(namespace);
}
}
}
private void initProxies() {
proxies = new ArrayList<String>();
ServiceDiscoveryManager manager = ServiceDiscoveryManager.getInstanceFor(connection);
try {
DiscoverItems discoItems = manager.discoverItems(connection.getServiceName());
Iterator it = discoItems.getItems();
while (it.hasNext()) {
DiscoverItems.Item item = (DiscoverItems.Item) it.next();
String proxy = checkIsProxy(manager, item);
if (proxy != null) {
proxies.add(proxy);
}
}
} catch (XMPPException e) {
return;
}
if (proxies.size() > 0) {
initStreamHosts();
}
}
private boolean checkIfPrivacyIsSupported(XMPPConnection conn) {
ServiceDiscoveryManager servDisc = ServiceDiscoveryManager.getInstanceFor(conn);
DiscoverInfo info = null;
try {
String xmppHost = DNSUtil.resolveXMPPDomain(conn.getServiceName()).getHost();
info = servDisc.discoverInfo(xmppHost);
} catch (XMPPException e) {
// We could not query the server
return false;
}
if (info != null) {
for (Iterator<Feature> i = info.getFeatures(); i.hasNext(); ) {
String s = i.next().getVar();
if (s.contains("jabber:iq:privacy")) {
return true;
}
}
}
return false;
}
/**
* Perform a ServiceDiscovery [1] and check if the given resource is among the features supported
* by the given recipient.
*
* <p>[1] XEP-0030 http://xmpp.org/extensions/xep-0030.html
*
* @param jid The JID must have a resource identifier (user@host/resource), otherwise you get a
* blame StackTrace in your logs.
* @return DiscoverInfo from recipient or null if an XMPPException was thrown.
* @blocking This method blocks until the ServiceDiscovery returns.
* @reentrant This method can be called concurrently.
* @nonCaching This method does not use a cache, but queries the server directly.
*/
private DiscoverInfo performServiceDiscovery(final JID jid) {
if (jid.isBareJID()) {
LOG.warn(
"cannot perform service discovery on a non resource qualified jid: " + jid.toString(),
new StackTrace());
return null;
}
final Connection connection = connectionService.getConnection();
if (connection == null) {
LOG.warn("cannot not perform a service discovery because not connected to a XMPP server");
return null;
}
ServiceDiscoveryManager sdm = ServiceDiscoveryManager.getInstanceFor(connection);
try {
return sdm.discoverInfo(jid.toString());
} catch (XMPPException e) {
LOG.warn(
"Service Discovery failed on recipient "
+ jid.toString()
+ " server: "
+ connection.getHost(),
e);
/*
* FIXME handle timeouts and error conditions differently ! see
* http://xmpp.org/extensions/xep-0030.html#errors
*/
return null;
}
}
/**
* Checks the service discovery item returned from a server component to verify if it is a File
* Transfer proxy or not.
*
* @param manager the service discovery manager which will be used to query the component
* @param item the discovered item on the server relating
* @return returns the JID of the proxy if it is a proxy or null if the item is not a proxy.
*/
private String checkIsProxy(ServiceDiscoveryManager manager, DiscoverItems.Item item) {
DiscoverInfo info;
try {
info = manager.discoverInfo(item.getEntityID());
} catch (XMPPException e) {
return null;
}
Iterator itx = info.getIdentities();
while (itx.hasNext()) {
DiscoverInfo.Identity identity = (DiscoverInfo.Identity) itx.next();
if ("proxy".equalsIgnoreCase(identity.getCategory())
&& "bytestreams".equalsIgnoreCase(identity.getType())) {
return info.getFrom();
}
}
return null;
}