mirror of
https://codeberg.org/Mercury-IM/Smack
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953 lines
41 KiB
Java
953 lines
41 KiB
Java
/**
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*
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* Copyright 2003-2007 Jive Software, 2018-2019 Florian Schmaus.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.disco;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.WeakHashMap;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.CopyOnWriteArraySet;
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import org.jivesoftware.smack.ConnectionCreationListener;
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import org.jivesoftware.smack.Manager;
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import org.jivesoftware.smack.SmackException.NoResponseException;
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import org.jivesoftware.smack.SmackException.NotConnectedException;
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import org.jivesoftware.smack.XMPPConnection;
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import org.jivesoftware.smack.XMPPConnectionRegistry;
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import org.jivesoftware.smack.XMPPException.XMPPErrorException;
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import org.jivesoftware.smack.iqrequest.AbstractIqRequestHandler;
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import org.jivesoftware.smack.iqrequest.IQRequestHandler.Mode;
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import org.jivesoftware.smack.packet.ExtensionElement;
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import org.jivesoftware.smack.packet.IQ;
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import org.jivesoftware.smack.packet.Stanza;
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import org.jivesoftware.smack.packet.StanzaError;
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import org.jivesoftware.smack.util.Objects;
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import org.jivesoftware.smack.util.StringUtils;
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import org.jivesoftware.smackx.disco.packet.DiscoverInfo;
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import org.jivesoftware.smackx.disco.packet.DiscoverInfo.Identity;
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import org.jivesoftware.smackx.disco.packet.DiscoverItems;
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import org.jivesoftware.smackx.xdata.packet.DataForm;
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import org.jxmpp.jid.DomainBareJid;
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import org.jxmpp.jid.EntityBareJid;
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import org.jxmpp.jid.Jid;
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import org.jxmpp.util.cache.Cache;
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import org.jxmpp.util.cache.ExpirationCache;
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/**
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* Manages discovery of services in XMPP entities. This class provides:
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* <ol>
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* <li>A registry of supported features in this XMPP entity.
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* <li>Automatic response when this XMPP entity is queried for information.
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* <li>Ability to discover items and information of remote XMPP entities.
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* <li>Ability to publish publicly available items.
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* </ol>
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*
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* @author Gaston Dombiak
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* @author Florian Schmaus
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*/
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public final class ServiceDiscoveryManager extends Manager {
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private static final String DEFAULT_IDENTITY_NAME = "Smack";
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private static final String DEFAULT_IDENTITY_CATEGORY = "client";
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private static final String DEFAULT_IDENTITY_TYPE = "pc";
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private static final List<DiscoInfoLookupShortcutMechanism> discoInfoLookupShortcutMechanisms = new ArrayList<>(2);
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private static DiscoverInfo.Identity defaultIdentity = new Identity(DEFAULT_IDENTITY_CATEGORY,
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DEFAULT_IDENTITY_NAME, DEFAULT_IDENTITY_TYPE);
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private final Set<DiscoverInfo.Identity> identities = new HashSet<>();
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private DiscoverInfo.Identity identity = defaultIdentity;
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private final Set<EntityCapabilitiesChangedListener> entityCapabilitiesChangedListeners = new CopyOnWriteArraySet<>();
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private static final Map<XMPPConnection, ServiceDiscoveryManager> instances = new WeakHashMap<>();
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private final Set<String> features = new HashSet<>();
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private DataForm extendedInfo = null;
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private final Map<String, NodeInformationProvider> nodeInformationProviders = new ConcurrentHashMap<>();
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// Create a new ServiceDiscoveryManager on every established connection
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static {
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XMPPConnectionRegistry.addConnectionCreationListener(new ConnectionCreationListener() {
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@Override
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public void connectionCreated(XMPPConnection connection) {
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getInstanceFor(connection);
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}
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});
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}
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/**
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* Set the default identity all new connections will have. If unchanged the default identity is an
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* identity where category is set to 'client', type is set to 'pc' and name is set to 'Smack'.
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*
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* @param identity
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*/
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public static void setDefaultIdentity(DiscoverInfo.Identity identity) {
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defaultIdentity = identity;
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}
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/**
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* Creates a new ServiceDiscoveryManager for a given XMPPConnection. This means that the
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* service manager will respond to any service discovery request that the connection may
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* receive.
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*
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* @param connection the connection to which a ServiceDiscoveryManager is going to be created.
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*/
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private ServiceDiscoveryManager(XMPPConnection connection) {
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super(connection);
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addFeature(DiscoverInfo.NAMESPACE);
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addFeature(DiscoverItems.NAMESPACE);
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// Listen for disco#items requests and answer with an empty result
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connection.registerIQRequestHandler(new AbstractIqRequestHandler(DiscoverItems.ELEMENT, DiscoverItems.NAMESPACE, IQ.Type.get, Mode.async) {
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@Override
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public IQ handleIQRequest(IQ iqRequest) {
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DiscoverItems discoverItems = (DiscoverItems) iqRequest;
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DiscoverItems response = new DiscoverItems();
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response.setType(IQ.Type.result);
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response.setTo(discoverItems.getFrom());
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response.setStanzaId(discoverItems.getStanzaId());
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response.setNode(discoverItems.getNode());
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// Add the defined items related to the requested node. Look for
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// the NodeInformationProvider associated with the requested node.
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NodeInformationProvider nodeInformationProvider = getNodeInformationProvider(discoverItems.getNode());
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if (nodeInformationProvider != null) {
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// Specified node was found, add node items
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response.addItems(nodeInformationProvider.getNodeItems());
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// Add packet extensions
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response.addExtensions(nodeInformationProvider.getNodePacketExtensions());
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} else if (discoverItems.getNode() != null) {
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// Return <item-not-found/> error since client doesn't contain
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// the specified node
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response.setType(IQ.Type.error);
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response.setError(StanzaError.getBuilder(StanzaError.Condition.item_not_found));
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}
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return response;
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}
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});
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// Listen for disco#info requests and answer the client's supported features
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// To add a new feature as supported use the #addFeature message
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connection.registerIQRequestHandler(new AbstractIqRequestHandler(DiscoverInfo.ELEMENT, DiscoverInfo.NAMESPACE, IQ.Type.get, Mode.async) {
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@Override
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public IQ handleIQRequest(IQ iqRequest) {
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DiscoverInfo discoverInfo = (DiscoverInfo) iqRequest;
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// Answer the client's supported features if the request is of the GET type
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DiscoverInfo response = new DiscoverInfo();
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response.setType(IQ.Type.result);
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response.setTo(discoverInfo.getFrom());
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response.setStanzaId(discoverInfo.getStanzaId());
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response.setNode(discoverInfo.getNode());
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// Add the client's identity and features only if "node" is null
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// and if the request was not send to a node. If Entity Caps are
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// enabled the client's identity and features are may also added
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// if the right node is chosen
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if (discoverInfo.getNode() == null) {
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addDiscoverInfoTo(response);
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} else {
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// Disco#info was sent to a node. Check if we have information of the
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// specified node
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NodeInformationProvider nodeInformationProvider = getNodeInformationProvider(discoverInfo.getNode());
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if (nodeInformationProvider != null) {
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// Node was found. Add node features
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response.addFeatures(nodeInformationProvider.getNodeFeatures());
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// Add node identities
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response.addIdentities(nodeInformationProvider.getNodeIdentities());
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// Add packet extensions
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response.addExtensions(nodeInformationProvider.getNodePacketExtensions());
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} else {
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// Return <item-not-found/> error since specified node was not found
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response.setType(IQ.Type.error);
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response.setError(StanzaError.getBuilder(StanzaError.Condition.item_not_found));
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}
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}
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return response;
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}
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});
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}
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/**
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* Returns the name of the client that will be returned when asked for the client identity
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* in a disco request. The name could be any value you need to identity this client.
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*
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* @return the name of the client that will be returned when asked for the client identity
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* in a disco request.
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*/
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public String getIdentityName() {
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return identity.getName();
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}
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/**
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* Sets the default identity the client will report.
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*
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* @param identity
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*/
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public synchronized void setIdentity(Identity identity) {
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this.identity = Objects.requireNonNull(identity, "Identity can not be null");
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// Notify others of a state change of SDM. In order to keep the state consistent, this
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// method is synchronized
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renewEntityCapsVersion();
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}
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/**
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* Return the default identity of the client.
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*
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* @return the default identity.
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*/
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public Identity getIdentity() {
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return identity;
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}
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/**
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* Returns the type of client that will be returned when asked for the client identity in a
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* disco request. The valid types are defined by the category client. Follow this link to learn
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* the possible types: <a href="https://xmpp.org/registrar/disco-categories.html">XMPP Registry for Service Discovery Identities</a>
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*
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* @return the type of client that will be returned when asked for the client identity in a
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* disco request.
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*/
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public String getIdentityType() {
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return identity.getType();
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}
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/**
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* Add an further identity to the client.
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*
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* @param identity
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*/
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public synchronized void addIdentity(DiscoverInfo.Identity identity) {
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identities.add(identity);
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// Notify others of a state change of SDM. In order to keep the state consistent, this
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// method is synchronized
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renewEntityCapsVersion();
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}
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/**
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* Remove an identity from the client. Note that the client needs at least one identity, the default identity, which
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* can not be removed.
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*
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* @param identity
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* @return true, if successful. Otherwise the default identity was given.
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*/
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public synchronized boolean removeIdentity(DiscoverInfo.Identity identity) {
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if (identity.equals(this.identity)) return false;
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identities.remove(identity);
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// Notify others of a state change of SDM. In order to keep the state consistent, this
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// method is synchronized
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renewEntityCapsVersion();
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return true;
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}
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/**
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* Returns all identities of this client as unmodifiable Collection.
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*
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* @return all identies as set
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*/
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public Set<DiscoverInfo.Identity> getIdentities() {
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Set<Identity> res = new HashSet<>(identities);
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// Add the main identity that must exist
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res.add(identity);
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return Collections.unmodifiableSet(res);
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}
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/**
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* Returns the ServiceDiscoveryManager instance associated with a given XMPPConnection.
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*
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* @param connection the connection used to look for the proper ServiceDiscoveryManager.
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* @return the ServiceDiscoveryManager associated with a given XMPPConnection.
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*/
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public static synchronized ServiceDiscoveryManager getInstanceFor(XMPPConnection connection) {
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ServiceDiscoveryManager sdm = instances.get(connection);
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if (sdm == null) {
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sdm = new ServiceDiscoveryManager(connection);
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// Register the new instance and associate it with the connection
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instances.put(connection, sdm);
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}
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return sdm;
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}
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/**
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* Add discover info response data.
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*
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* @see <a href="http://xmpp.org/extensions/xep-0030.html#info-basic">XEP-30 Basic Protocol; Example 2</a>
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*
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* @param response the discover info response packet
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*/
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public synchronized void addDiscoverInfoTo(DiscoverInfo response) {
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// First add the identities of the connection
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response.addIdentities(getIdentities());
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// Add the registered features to the response
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for (String feature : getFeatures()) {
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response.addFeature(feature);
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}
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response.addExtension(extendedInfo);
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}
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/**
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* Returns the NodeInformationProvider responsible for providing information
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* (ie items) related to a given node or <tt>null</null> if none.<p>
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*
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* In MUC, a node could be 'http://jabber.org/protocol/muc#rooms' which means that the
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* NodeInformationProvider will provide information about the rooms where the user has joined.
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*
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* @param node the node that contains items associated with an entity not addressable as a JID.
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* @return the NodeInformationProvider responsible for providing information related
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* to a given node.
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*/
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private NodeInformationProvider getNodeInformationProvider(String node) {
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if (node == null) {
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return null;
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}
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return nodeInformationProviders.get(node);
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}
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/**
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* Sets the NodeInformationProvider responsible for providing information
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* (ie items) related to a given node. Every time this client receives a disco request
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* regarding the items of a given node, the provider associated to that node will be the
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* responsible for providing the requested information.<p>
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*
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* In MUC, a node could be 'http://jabber.org/protocol/muc#rooms' which means that the
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* NodeInformationProvider will provide information about the rooms where the user has joined.
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*
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* @param node the node whose items will be provided by the NodeInformationProvider.
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* @param listener the NodeInformationProvider responsible for providing items related
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* to the node.
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*/
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public void setNodeInformationProvider(String node, NodeInformationProvider listener) {
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nodeInformationProviders.put(node, listener);
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}
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/**
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* Removes the NodeInformationProvider responsible for providing information
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* (ie items) related to a given node. This means that no more information will be
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* available for the specified node.
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*
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* In MUC, a node could be 'http://jabber.org/protocol/muc#rooms' which means that the
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* NodeInformationProvider will provide information about the rooms where the user has joined.
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*
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* @param node the node to remove the associated NodeInformationProvider.
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*/
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public void removeNodeInformationProvider(String node) {
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nodeInformationProviders.remove(node);
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}
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/**
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* Returns the supported features by this XMPP entity.
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* <p>
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* The result is a copied modifiable list of the original features.
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* </p>
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*
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* @return a List of the supported features by this XMPP entity.
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*/
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public synchronized List<String> getFeatures() {
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return new ArrayList<>(features);
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}
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/**
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* Registers that a new feature is supported by this XMPP entity. When this client is
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* queried for its information the registered features will be answered.<p>
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*
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* Since no stanza is actually sent to the server it is safe to perform this operation
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* before logging to the server. In fact, you may want to configure the supported features
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* before logging to the server so that the information is already available if it is required
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* upon login.
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*
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* @param feature the feature to register as supported.
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*/
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public synchronized void addFeature(String feature) {
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features.add(feature);
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// Notify others of a state change of SDM. In order to keep the state consistent, this
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// method is synchronized
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renewEntityCapsVersion();
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}
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/**
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* Removes the specified feature from the supported features by this XMPP entity.<p>
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*
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* Since no stanza is actually sent to the server it is safe to perform this operation
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* before logging to the server.
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*
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* @param feature the feature to remove from the supported features.
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*/
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public synchronized void removeFeature(String feature) {
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features.remove(feature);
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// Notify others of a state change of SDM. In order to keep the state consistent, this
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// method is synchronized
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renewEntityCapsVersion();
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}
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/**
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* Returns true if the specified feature is registered in the ServiceDiscoveryManager.
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*
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* @param feature the feature to look for.
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* @return a boolean indicating if the specified featured is registered or not.
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*/
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public synchronized boolean includesFeature(String feature) {
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return features.contains(feature);
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}
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/**
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* Registers extended discovery information of this XMPP entity. When this
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* client is queried for its information this data form will be returned as
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* specified by XEP-0128.
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* <p>
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*
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* Since no stanza is actually sent to the server it is safe to perform this
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* operation before logging to the server. In fact, you may want to
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* configure the extended info before logging to the server so that the
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* information is already available if it is required upon login.
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*
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* @param info
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* the data form that contains the extend service discovery
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* information.
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*/
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public synchronized void setExtendedInfo(DataForm info) {
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extendedInfo = info;
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// Notify others of a state change of SDM. In order to keep the state consistent, this
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// method is synchronized
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renewEntityCapsVersion();
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}
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/**
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* Returns the data form that is set as extended information for this Service Discovery instance (XEP-0128).
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*
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* @see <a href="http://xmpp.org/extensions/xep-0128.html">XEP-128: Service Discovery Extensions</a>
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* @return the data form
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*/
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public DataForm getExtendedInfo() {
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return extendedInfo;
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}
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/**
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* Returns the data form as List of PacketExtensions, or null if no data form is set.
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* This representation is needed by some classes (e.g. EntityCapsManager, NodeInformationProvider)
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*
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* @return the data form as List of PacketExtensions
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*/
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public List<ExtensionElement> getExtendedInfoAsList() {
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List<ExtensionElement> res = null;
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if (extendedInfo != null) {
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res = new ArrayList<>(1);
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res.add(extendedInfo);
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}
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return res;
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}
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/**
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* Removes the data form containing extended service discovery information
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* from the information returned by this XMPP entity.<p>
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*
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* Since no stanza is actually sent to the server it is safe to perform this
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* operation before logging to the server.
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*/
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public synchronized void removeExtendedInfo() {
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extendedInfo = null;
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// Notify others of a state change of SDM. In order to keep the state consistent, this
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// method is synchronized
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renewEntityCapsVersion();
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}
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/**
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* Returns the discovered information of a given XMPP entity addressed by its JID.
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* Use null as entityID to query the server
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*
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* @param entityID the address of the XMPP entity or null.
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* @return the discovered information.
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* @throws XMPPErrorException
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* @throws NoResponseException
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* @throws NotConnectedException
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* @throws InterruptedException
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*/
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public DiscoverInfo discoverInfo(Jid entityID) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
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if (entityID == null)
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return discoverInfo(null, null);
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synchronized (discoInfoLookupShortcutMechanisms) {
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|
for (DiscoInfoLookupShortcutMechanism discoInfoLookupShortcutMechanism : discoInfoLookupShortcutMechanisms) {
|
|
DiscoverInfo info = discoInfoLookupShortcutMechanism.getDiscoverInfoByUser(this, entityID);
|
|
if (info != null) {
|
|
// We were able to retrieve the information from Entity Caps and
|
|
// avoided a disco request, hurray!
|
|
return info;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Last resort: Standard discovery.
|
|
return discoverInfo(entityID, null);
|
|
}
|
|
|
|
/**
|
|
* Returns the discovered information of a given XMPP entity addressed by its JID and
|
|
* 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 optional attribute that supplements the 'jid' attribute.
|
|
* @return the discovered information.
|
|
* @throws XMPPErrorException if the operation failed for some reason.
|
|
* @throws NoResponseException if there was no response from the server.
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
*/
|
|
public DiscoverInfo discoverInfo(Jid entityID, String node) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
// Discover the entity's info
|
|
DiscoverInfo disco = new DiscoverInfo();
|
|
disco.setType(IQ.Type.get);
|
|
disco.setTo(entityID);
|
|
disco.setNode(node);
|
|
|
|
Stanza result = connection().createStanzaCollectorAndSend(disco).nextResultOrThrow();
|
|
|
|
return (DiscoverInfo) result;
|
|
}
|
|
|
|
/**
|
|
* Returns the discovered items of a given XMPP entity addressed by its JID.
|
|
*
|
|
* @param entityID the address of the XMPP entity.
|
|
* @return the discovered information.
|
|
* @throws XMPPErrorException if the operation failed for some reason.
|
|
* @throws NoResponseException if there was no response from the server.
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
*/
|
|
public DiscoverItems discoverItems(Jid entityID) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
return discoverItems(entityID, null);
|
|
}
|
|
|
|
/**
|
|
* Returns the discovered items of a given XMPP entity addressed by its JID and
|
|
* note attribute. Use this message only when trying to query information which is not
|
|
* directly addressable.
|
|
*
|
|
* @param entityID the address of the XMPP entity.
|
|
* @param node the optional attribute that supplements the 'jid' attribute.
|
|
* @return the discovered items.
|
|
* @throws XMPPErrorException if the operation failed for some reason.
|
|
* @throws NoResponseException if there was no response from the server.
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
*/
|
|
public DiscoverItems discoverItems(Jid entityID, String node) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
// Discover the entity's items
|
|
DiscoverItems disco = new DiscoverItems();
|
|
disco.setType(IQ.Type.get);
|
|
disco.setTo(entityID);
|
|
disco.setNode(node);
|
|
|
|
Stanza result = connection().createStanzaCollectorAndSend(disco).nextResultOrThrow();
|
|
return (DiscoverItems) result;
|
|
}
|
|
|
|
/**
|
|
* 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 entityID the address of the XMPP entity.
|
|
* @return true if the server supports publishing of items.
|
|
* @throws XMPPErrorException
|
|
* @throws NoResponseException
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
* @deprecated The disco-publish feature was removed from XEP-0030 in 2008 in favor of XEP-0060: Publish-Subscribe.
|
|
*/
|
|
@Deprecated
|
|
// TODO: Remove in Smack 4.4
|
|
public boolean canPublishItems(Jid entityID) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
DiscoverInfo info = discoverInfo(entityID);
|
|
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 info the discover info stanza to check.
|
|
* @return true if the server supports publishing of items.
|
|
* @deprecated The disco-publish feature was removed from XEP-0030 in 2008 in favor of XEP-0060: Publish-Subscribe.
|
|
*/
|
|
@Deprecated
|
|
// TODO: Remove in Smack 4.4
|
|
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
|
|
* a 'jid' attribute specifying the Entity ID of the item, and an action attribute which
|
|
* specifies the action being taken for that item. Possible action values are: "update" and
|
|
* "remove".
|
|
*
|
|
* @param entityID the address of the XMPP entity.
|
|
* @param discoverItems the DiscoveryItems to publish.
|
|
* @throws XMPPErrorException
|
|
* @throws NoResponseException
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
* @deprecated The disco-publish feature was removed from XEP-0030 in 2008 in favor of XEP-0060: Publish-Subscribe.
|
|
*/
|
|
@Deprecated
|
|
// TODO: Remove in Smack 4.4
|
|
public void publishItems(Jid entityID, DiscoverItems discoverItems) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
publishItems(entityID, null, discoverItems);
|
|
}
|
|
|
|
/**
|
|
* Publishes new items to a parent entity and node. The item elements to publish MUST have at
|
|
* least a 'jid' attribute specifying the Entity ID of the item, and an action attribute which
|
|
* specifies the action being taken for that item. Possible action values are: "update" and
|
|
* "remove".
|
|
*
|
|
* @param entityID the address of the XMPP entity.
|
|
* @param node the attribute that supplements the 'jid' attribute.
|
|
* @param discoverItems the DiscoveryItems to publish.
|
|
* @throws XMPPErrorException if the operation failed for some reason.
|
|
* @throws NoResponseException if there was no response from the server.
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
* @deprecated The disco-publish feature was removed from XEP-0030 in 2008 in favor of XEP-0060: Publish-Subscribe.
|
|
*/
|
|
@Deprecated
|
|
// TODO: Remove in Smack 4.4
|
|
public void publishItems(Jid entityID, String node, DiscoverItems discoverItems) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
discoverItems.setType(IQ.Type.set);
|
|
discoverItems.setTo(entityID);
|
|
discoverItems.setNode(node);
|
|
|
|
connection().createStanzaCollectorAndSend(discoverItems).nextResultOrThrow();
|
|
}
|
|
|
|
/**
|
|
* Returns true if the server supports the given feature.
|
|
*
|
|
* @param feature
|
|
* @return true if the server supports the given feature.
|
|
* @throws NoResponseException
|
|
* @throws XMPPErrorException
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
* @since 4.1
|
|
*/
|
|
public boolean serverSupportsFeature(CharSequence feature) throws NoResponseException, XMPPErrorException,
|
|
NotConnectedException, InterruptedException {
|
|
return serverSupportsFeatures(feature);
|
|
}
|
|
|
|
public boolean serverSupportsFeatures(CharSequence... features) throws NoResponseException,
|
|
XMPPErrorException, NotConnectedException, InterruptedException {
|
|
return serverSupportsFeatures(Arrays.asList(features));
|
|
}
|
|
|
|
public boolean serverSupportsFeatures(Collection<? extends CharSequence> features)
|
|
throws NoResponseException, XMPPErrorException, NotConnectedException,
|
|
InterruptedException {
|
|
return supportsFeatures(connection().getXMPPServiceDomain(), features);
|
|
}
|
|
|
|
/**
|
|
* Check if the given features are supported by the connection account. This means that the discovery information
|
|
* lookup will be performed on the bare JID of the connection managed by this ServiceDiscoveryManager.
|
|
*
|
|
* @param features the features to check
|
|
* @return <code>true</code> if all features are supported by the connection account, <code>false</code> otherwise
|
|
* @throws NoResponseException
|
|
* @throws XMPPErrorException
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
* @since 4.2.2
|
|
*/
|
|
public boolean accountSupportsFeatures(CharSequence... features)
|
|
throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
return accountSupportsFeatures(Arrays.asList(features));
|
|
}
|
|
|
|
/**
|
|
* Check if the given collection of features are supported by the connection account. This means that the discovery
|
|
* information lookup will be performed on the bare JID of the connection managed by this ServiceDiscoveryManager.
|
|
*
|
|
* @param features a collection of features
|
|
* @return <code>true</code> if all features are supported by the connection account, <code>false</code> otherwise
|
|
* @throws NoResponseException
|
|
* @throws XMPPErrorException
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
* @since 4.2.2
|
|
*/
|
|
public boolean accountSupportsFeatures(Collection<? extends CharSequence> features)
|
|
throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
EntityBareJid accountJid = connection().getUser().asEntityBareJid();
|
|
return supportsFeatures(accountJid, features);
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* @throws InterruptedException
|
|
*/
|
|
public boolean supportsFeature(Jid jid, CharSequence feature) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
return supportsFeatures(jid, feature);
|
|
}
|
|
|
|
public boolean supportsFeatures(Jid jid, CharSequence... features) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
return supportsFeatures(jid, Arrays.asList(features));
|
|
}
|
|
|
|
public boolean supportsFeatures(Jid jid, Collection<? extends CharSequence> features) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
DiscoverInfo result = discoverInfo(jid);
|
|
for (CharSequence feature : features) {
|
|
if (!result.containsFeature(feature)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Create a cache to hold the 25 most recently lookup services for a given feature for a period
|
|
* of 24 hours.
|
|
*/
|
|
private final Cache<String, List<DiscoverInfo>> services = new ExpirationCache<>(25,
|
|
24 * 60 * 60 * 1000);
|
|
|
|
/**
|
|
* 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
|
|
* @throws InterruptedException
|
|
*/
|
|
public List<DiscoverInfo> findServicesDiscoverInfo(String feature, boolean stopOnFirst, boolean useCache)
|
|
throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
return findServicesDiscoverInfo(feature, stopOnFirst, useCache, null);
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* @param encounteredExceptions an optional map which will be filled with the exceptions encountered
|
|
* @return a possible empty list of services providing the given feature
|
|
* @throws NoResponseException
|
|
* @throws XMPPErrorException
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
* @since 4.2.2
|
|
*/
|
|
public List<DiscoverInfo> findServicesDiscoverInfo(String feature, boolean stopOnFirst, boolean useCache, Map<? super Jid, Exception> encounteredExceptions)
|
|
throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
DomainBareJid serviceName = connection().getXMPPServiceDomain();
|
|
return findServicesDiscoverInfo(serviceName, feature, stopOnFirst, useCache, encounteredExceptions);
|
|
}
|
|
|
|
/**
|
|
* Find all services under a given service that provide a given feature.
|
|
*
|
|
* @param serviceName the service to query
|
|
* @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
|
|
* @param encounteredExceptions an optional map which will be filled with the exceptions encountered
|
|
* @return a possible empty list of services providing the given feature
|
|
* @throws NoResponseException
|
|
* @throws XMPPErrorException
|
|
* @throws NotConnectedException
|
|
* @throws InterruptedException
|
|
* @since 4.3.0
|
|
*/
|
|
public List<DiscoverInfo> findServicesDiscoverInfo(DomainBareJid serviceName, String feature, boolean stopOnFirst,
|
|
boolean useCache, Map<? super Jid, Exception> encounteredExceptions)
|
|
throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
List<DiscoverInfo> serviceDiscoInfo;
|
|
if (useCache) {
|
|
serviceDiscoInfo = services.lookup(feature);
|
|
if (serviceDiscoInfo != null) {
|
|
return serviceDiscoInfo;
|
|
}
|
|
}
|
|
serviceDiscoInfo = new LinkedList<>();
|
|
// Send the disco packet to the server itself
|
|
DiscoverInfo info;
|
|
try {
|
|
info = discoverInfo(serviceName);
|
|
} catch (XMPPErrorException e) {
|
|
if (encounteredExceptions != null) {
|
|
encounteredExceptions.put(serviceName, e);
|
|
}
|
|
return serviceDiscoInfo;
|
|
}
|
|
// Check if the server supports the feature
|
|
if (info.containsFeature(feature)) {
|
|
serviceDiscoInfo.add(info);
|
|
if (stopOnFirst) {
|
|
if (useCache) {
|
|
// Cache the discovered information
|
|
services.put(feature, serviceDiscoInfo);
|
|
}
|
|
return serviceDiscoInfo;
|
|
}
|
|
}
|
|
DiscoverItems items;
|
|
try {
|
|
// Get the disco items and send the disco packet to each server item
|
|
items = discoverItems(serviceName);
|
|
} catch (XMPPErrorException e) {
|
|
if (encounteredExceptions != null) {
|
|
encounteredExceptions.put(serviceName, e);
|
|
}
|
|
return serviceDiscoInfo;
|
|
}
|
|
for (DiscoverItems.Item item : items.getItems()) {
|
|
Jid address = item.getEntityID();
|
|
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(address);
|
|
}
|
|
catch (XMPPErrorException | NoResponseException e) {
|
|
if (encounteredExceptions != null) {
|
|
encounteredExceptions.put(address, e);
|
|
}
|
|
continue;
|
|
}
|
|
if (info.containsFeature(feature)) {
|
|
serviceDiscoInfo.add(info);
|
|
if (stopOnFirst) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (useCache) {
|
|
// Cache the discovered information
|
|
services.put(feature, serviceDiscoInfo);
|
|
}
|
|
return serviceDiscoInfo;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* @throws InterruptedException
|
|
*/
|
|
public List<DomainBareJid> findServices(String feature, boolean stopOnFirst, boolean useCache) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
|
|
List<DiscoverInfo> services = findServicesDiscoverInfo(feature, stopOnFirst, useCache);
|
|
List<DomainBareJid> res = new ArrayList<>(services.size());
|
|
for (DiscoverInfo info : services) {
|
|
res.add(info.getFrom().asDomainBareJid());
|
|
}
|
|
return res;
|
|
}
|
|
|
|
public DomainBareJid findService(String feature, boolean useCache, String category, String type)
|
|
throws NoResponseException, XMPPErrorException, NotConnectedException,
|
|
InterruptedException {
|
|
boolean noCategory = StringUtils.isNullOrEmpty(category);
|
|
boolean noType = StringUtils.isNullOrEmpty(type);
|
|
if (noType != noCategory) {
|
|
throw new IllegalArgumentException("Must specify either both, category and type, or none");
|
|
}
|
|
|
|
List<DiscoverInfo> services = findServicesDiscoverInfo(feature, false, useCache);
|
|
if (services.isEmpty()) {
|
|
return null;
|
|
}
|
|
|
|
if (!noCategory && !noType) {
|
|
for (DiscoverInfo info : services) {
|
|
if (info.hasIdentity(category, type)) {
|
|
return info.getFrom().asDomainBareJid();
|
|
}
|
|
}
|
|
}
|
|
|
|
return services.get(0).getFrom().asDomainBareJid();
|
|
}
|
|
|
|
public DomainBareJid findService(String feature, boolean useCache) throws NoResponseException,
|
|
XMPPErrorException, NotConnectedException, InterruptedException {
|
|
return findService(feature, useCache, null, null);
|
|
}
|
|
|
|
public boolean addEntityCapabilitiesChangedListener(EntityCapabilitiesChangedListener entityCapabilitiesChangedListener) {
|
|
return entityCapabilitiesChangedListeners.add(entityCapabilitiesChangedListener);
|
|
}
|
|
|
|
/**
|
|
* Notify the {@link EntityCapabilitiesChangedListener} about changed capabilities.
|
|
*/
|
|
private void renewEntityCapsVersion() {
|
|
for (EntityCapabilitiesChangedListener entityCapabilitiesChangedListener : entityCapabilitiesChangedListeners) {
|
|
entityCapabilitiesChangedListener.onEntityCapailitiesChanged();
|
|
}
|
|
}
|
|
|
|
public static void addDiscoInfoLookupShortcutMechanism(DiscoInfoLookupShortcutMechanism discoInfoLookupShortcutMechanism) {
|
|
synchronized (discoInfoLookupShortcutMechanisms) {
|
|
discoInfoLookupShortcutMechanisms.add(discoInfoLookupShortcutMechanism);
|
|
Collections.sort(discoInfoLookupShortcutMechanisms);
|
|
}
|
|
}
|
|
|
|
public static void removeDiscoInfoLookupShortcutMechanism(DiscoInfoLookupShortcutMechanism discoInfoLookupShortcutMechanism) {
|
|
synchronized (discoInfoLookupShortcutMechanisms) {
|
|
discoInfoLookupShortcutMechanisms.remove(discoInfoLookupShortcutMechanism);
|
|
}
|
|
}
|
|
}
|