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Code Issues Releases Wiki Activity

SMACK-361 Added support for Entity Capabilities.

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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/branches/smack_3_3_0@13560 b35dd754-fafc-0310-a699-88a17e54d16e
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Florian Schmaus 2013-03-18 08:50:48 +00:00 • committed by flow
parent 1cdb86989a
commit 21be8c55ee
33 changed files with 2395 additions and 88 deletions
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238
source/org/jivesoftware/smackx/ServiceDiscoveryManager.java
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@ -26,8 +26,11 @@ import org.jivesoftware.smack.filter.PacketIDFilter;
import org.jivesoftware.smack.filter.PacketTypeFilter;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.packet.XMPPError;
import org.jivesoftware.smackx.entitycaps.EntityCapsManager;
import org.jivesoftware.smackx.packet.DiscoverInfo;
import org.jivesoftware.smackx.packet.DiscoverInfo.Identity;
import org.jivesoftware.smackx.packet.DiscoverItems;
import org.jivesoftware.smackx.packet.DataForm;
@ -47,8 +50,13 @@ import java.util.concurrent.ConcurrentHashMap;
*/
public class ServiceDiscoveryManager {
private static String identityName = "Smack";
private static String identityType = "pc";
private static final String DEFAULT_IDENTITY_NAME = "Smack";
private static final String DEFAULT_IDENTITY_CATEGORY = "client";
private static final String DEFAULT_IDENTITY_TYPE = "pc";
private static List<DiscoverInfo.Identity> identities = new LinkedList<DiscoverInfo.Identity>();
private EntityCapsManager capsManager;
private static Map<Connection, ServiceDiscoveryManager> instances =
new ConcurrentHashMap<Connection, ServiceDiscoveryManager>();
@ -66,6 +74,7 @@ public class ServiceDiscoveryManager {
new ServiceDiscoveryManager(connection);
}
});
identities.add(new Identity(DEFAULT_IDENTITY_CATEGORY, DEFAULT_IDENTITY_NAME, DEFAULT_IDENTITY_TYPE));
}
/**
@ -77,6 +86,7 @@ public class ServiceDiscoveryManager {
*/
public ServiceDiscoveryManager(Connection connection) {
this.connection = connection;
init();
}
@ -98,7 +108,12 @@ public class ServiceDiscoveryManager {
* in a disco request.
*/
public static String getIdentityName() {
return identityName;
DiscoverInfo.Identity identity = identities.get(0);
if (identity != null) {
return identity.getName();
} else {
return null;
}
}
/**
@ -109,7 +124,9 @@ public class ServiceDiscoveryManager {
* in a disco request.
*/
public static void setIdentityName(String name) {
identityName = name;
DiscoverInfo.Identity identity = identities.remove(0);
identity = new DiscoverInfo.Identity(DEFAULT_IDENTITY_CATEGORY, name, DEFAULT_IDENTITY_TYPE);
identities.add(identity);
}
/**
@ -121,7 +138,12 @@ public class ServiceDiscoveryManager {
* disco request.
*/
public static String getIdentityType() {
return identityType;
DiscoverInfo.Identity identity = identities.get(0);
if (identity != null) {
return identity.getType();
} else {
return null;
}
}
/**
@ -133,7 +155,22 @@ public class ServiceDiscoveryManager {
* disco request.
*/
public static void setIdentityType(String type) {
identityType = type;
DiscoverInfo.Identity identity = identities.get(0);
if (identity != null) {
identity.setType(type);
} else {
identity = new DiscoverInfo.Identity(DEFAULT_IDENTITY_CATEGORY, DEFAULT_IDENTITY_NAME, type);
identities.add(identity);
}
}
/**
* Returns all identities of this client as unmodifiable Collection
*
* @return
*/
public static List<DiscoverInfo.Identity> getIdentities() {
return Collections.unmodifiableList(identities);
}
/**
@ -190,13 +227,10 @@ public class ServiceDiscoveryManager {
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);
}
}
// 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
@ -222,22 +256,12 @@ public class ServiceDiscoveryManager {
response.setTo(discoverInfo.getFrom());
response.setPacketID(discoverInfo.getPacketID());
response.setNode(discoverInfo.getNode());
// Add the client's identity and features only if "node" is null
// 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) {
// 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());
}
if (extendedInfo != null) {
response.addExtension(extendedInfo);
}
}
addDiscoverInfoTo(response);
}
else {
// Disco#info was sent to a node. Check if we have information of the
@ -246,20 +270,11 @@ public class ServiceDiscoveryManager {
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);
}
}
response.addFeatures(nodeInformationProvider.getNodeFeatures());
// Add node identities
List<DiscoverInfo.Identity> identities =
nodeInformationProvider.getNodeIdentities();
if (identities != null) {
for (DiscoverInfo.Identity identity : identities) {
response.addIdentity(identity);
}
}
response.addIdentities(nodeInformationProvider.getNodeIdentities());
// Add packet extensions
response.addExtensions(nodeInformationProvider.getNodePacketExtensions());
}
else {
// Return <item-not-found/> error since specified node was not found
@ -274,6 +289,26 @@ public class ServiceDiscoveryManager {
connection.addPacketListener(packetListener, packetFilter);
}
/**
* Add discover info response data.
*
* @see <a href="http://xmpp.org/extensions/xep-0030.html#info-basic">XEP-30 Basic Protocol; Example 2</a>
*
* @param response the discover info response packet
*/
public void addDiscoverInfoTo(DiscoverInfo response) {
// First add the identities of the connection
response.addIdentities(identities);
// Add the registered features to the response
synchronized (features) {
for (Iterator<String> it = getFeatures(); it.hasNext();) {
response.addFeature(it.next());
}
response.addExtension(extendedInfo);
}
}
/**
* Returns the NodeInformationProvider responsible for providing information
* (ie items) related to a given node or <tt>null</null> if none.<p>
@ -334,6 +369,17 @@ public class ServiceDiscoveryManager {
}
}
/**
* Returns the supported features by this XMPP entity.
*
* @return a copy of the List on the supported features by this XMPP entity.
*/
public List<String> getFeaturesList() {
synchronized (features) {
return new LinkedList<String>(features);
}
}
/**
* Registers that a new feature is supported by this XMPP entity. When this client is
* queried for its information the registered features will be answered.<p>
@ -348,6 +394,7 @@ public class ServiceDiscoveryManager {
public void addFeature(String feature) {
synchronized (features) {
features.add(feature);
renewEntityCapsVersion();
}
}
@ -362,6 +409,7 @@ public class ServiceDiscoveryManager {
public void removeFeature(String feature) {
synchronized (features) {
features.remove(feature);
renewEntityCapsVersion();
}
}
@ -394,10 +442,36 @@ public class ServiceDiscoveryManager {
*/
public void setExtendedInfo(DataForm info) {
extendedInfo = info;
renewEntityCapsVersion();
}
/**
* Removes the dataform containing extended service discovery information
* Returns the data form that is set as extended information for this Service Discovery instance (XEP-0128)
*
* @see <a href="http://xmpp.org/extensions/xep-0128.html">XEP-128: Service Discovery Extensions</a>
* @return
*/
public DataForm getExtendedInfo() {
return extendedInfo;
}
/**
* Returns the data form as List of PacketExtensions, or null if no data form is set.
* This representation is needed by some classes (e.g. EntityCapsManager, NodeInformationProvider)
*
* @return
*/
public List<PacketExtension> getExtendedInfoAsList() {
List<PacketExtension> res = null;
if (extendedInfo != null) {
res = new ArrayList<PacketExtension>(1);
res.add(extendedInfo);
}
return res;
}
/**
* Removes the data form containing extended service discovery information
* from the information returned by this XMPP entity.<p>
*
* Since no packet is actually sent to the server it is safe to perform this
@ -405,17 +479,45 @@ public class ServiceDiscoveryManager {
*/
public void removeExtendedInfo() {
extendedInfo = null;
renewEntityCapsVersion();
}
/**
* Returns the discovered information of a given XMPP entity addressed by its JID.
* Use null as entityID to query the server
*
* @param entityID the address of the XMPP entity.
* @param entityID the address of the XMPP entity or null.
* @return the discovered information.
* @throws XMPPException if the operation failed for some reason.
*/
public DiscoverInfo discoverInfo(String entityID) throws XMPPException {
return discoverInfo(entityID, null);
if (entityID == null)
return discoverInfo(null, null);
// Check if the have it cached in the Entity Capabilities Manager
DiscoverInfo info = EntityCapsManager.getDiscoverInfoByUser(entityID);
if (info != null) {
// We were able to retrieve the information from Entity Caps and
// avoided a disco request, hurray!
return info;
}
// Try to get the newest node#version if it's known, otherwise null is
// returned
EntityCapsManager.NodeVerHash nvh = EntityCapsManager.getNodeVerHashByJid(entityID);
// Discover by requesting the information from the remote entity
// Note that wee need to use NodeVer as argument for Node if it exists
info = discoverInfo(entityID, nvh != null ? nvh.getNodeVer() : null);
// If the node version is known, store the new entry.
if (nvh != null) {
if (EntityCapsManager.verifyDiscvoerInfoVersion(nvh.getVer(), nvh.getHash(), info))
EntityCapsManager.addDiscoverInfoByNode(nvh.getNodeVer(), info);
}
return info;
}
/**
@ -423,8 +525,11 @@ public class ServiceDiscoveryManager {
* note attribute. Use this message only when trying to query information which is not
* directly addressable.
*
* @see <a href="http://xmpp.org/extensions/xep-0030.html#info-basic">XEP-30 Basic Protocol</a>
* @see <a href="http://xmpp.org/extensions/xep-0030.html#info-nodes">XEP-30 Info Nodes</a>
*
* @param entityID the address of the XMPP entity.
* @param node the attribute that supplements the 'jid' attribute.
* @param node the optional attribute that supplements the 'jid' attribute.
* @return the discovered information.
* @throws XMPPException if the operation failed for some reason.
*/
@ -471,7 +576,7 @@ public class ServiceDiscoveryManager {
* directly addressable.
*
* @param entityID the address of the XMPP entity.
* @param node the attribute that supplements the 'jid' attribute.
* @param node the optional attribute that supplements the 'jid' attribute.
* @return the discovered items.
* @throws XMPPException if the operation failed for some reason.
*/
@ -513,8 +618,21 @@ public class ServiceDiscoveryManager {
*/
public boolean canPublishItems(String entityID) throws XMPPException {
DiscoverInfo info = discoverInfo(entityID);
return info.containsFeature("http://jabber.org/protocol/disco#publish");
}
return canPublishItems(info);
}
/**
* 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. user@host.com).
*
* @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");
}
/**
* Publishes new items to a parent entity. The item elements to publish MUST have at least
@ -565,4 +683,26 @@ public class ServiceDiscoveryManager {
throw new XMPPException(result.getError());
}
}
}
/**
* Entity Capabilities
*/
/**
* Loads the ServiceDiscoveryManager with an EntityCapsManger
* that speeds up certain lookups
* @param manager
*/
public void setEntityCapsManager(EntityCapsManager manager) {
capsManager = manager;
}
/**
* Updates the Entity Capabilities Verification String
* if EntityCaps is enabled
*/
private void renewEntityCapsVersion() {
if (capsManager != null && capsManager.entityCapsEnabled())
capsManager.updateLocalEntityCaps();
}
}