mirror of
https://codeberg.org/Mercury-IM/Smack
synced 2024-06-11 22:24:53 +02:00
c81cd34561
Introducing a clean split between the constant connection configuration parameters, which are now all in ConnectionConfiguration and the dynamic connection state (e.g. hostAddresses) which are now in AbstractXMPPConnection. Also removed all arguments of login() since the username, password, resource and callback handler need now to be configured via ConnectionConfiguration. Also remove documentation/extensions/messageevents.md, as it's already in documentation/legacy
1227 lines
46 KiB
Java
1227 lines
46 KiB
Java
/**
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*
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* Copyright 2009 Jive Software.
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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.smack;
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import java.io.IOException;
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import java.io.Reader;
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import java.io.Writer;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashMap;
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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.concurrent.ArrayBlockingQueue;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.concurrent.CopyOnWriteArraySet;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.ScheduledThreadPoolExecutor;
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import java.util.concurrent.ThreadFactory;
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import java.util.concurrent.ThreadPoolExecutor;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.locks.Lock;
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import java.util.concurrent.locks.ReentrantLock;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import org.jivesoftware.smack.ConnectionConfiguration.ConnectionConfigurationBuilder;
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import org.jivesoftware.smack.ConnectionConfiguration.SecurityMode;
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import org.jivesoftware.smack.SmackException.AlreadyConnectedException;
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import org.jivesoftware.smack.SmackException.AlreadyLoggedInException;
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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.SmackException.ConnectionException;
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import org.jivesoftware.smack.SmackException.ResourceBindingNotOfferedException;
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import org.jivesoftware.smack.SmackException.SecurityRequiredException;
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import org.jivesoftware.smack.XMPPException.XMPPErrorException;
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import org.jivesoftware.smack.compress.packet.Compress;
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import org.jivesoftware.smack.compression.XMPPInputOutputStream;
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import org.jivesoftware.smack.debugger.SmackDebugger;
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import org.jivesoftware.smack.filter.IQReplyFilter;
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import org.jivesoftware.smack.filter.PacketFilter;
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import org.jivesoftware.smack.filter.PacketIDFilter;
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import org.jivesoftware.smack.packet.Bind;
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import org.jivesoftware.smack.packet.IQ;
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import org.jivesoftware.smack.packet.Mechanisms;
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import org.jivesoftware.smack.packet.Packet;
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import org.jivesoftware.smack.packet.PacketExtension;
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import org.jivesoftware.smack.packet.Presence;
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import org.jivesoftware.smack.packet.RosterVer;
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import org.jivesoftware.smack.packet.Session;
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import org.jivesoftware.smack.packet.StartTls;
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import org.jivesoftware.smack.packet.PlainStreamElement;
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import org.jivesoftware.smack.provider.PacketExtensionProvider;
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import org.jivesoftware.smack.provider.ProviderManager;
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import org.jivesoftware.smack.rosterstore.RosterStore;
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import org.jivesoftware.smack.util.Async;
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import org.jivesoftware.smack.util.DNSUtil;
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import org.jivesoftware.smack.util.PacketParserUtils;
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import org.jivesoftware.smack.util.dns.HostAddress;
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import org.jxmpp.util.XmppStringUtils;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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public abstract class AbstractXMPPConnection implements XMPPConnection {
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private static final Logger LOGGER = Logger.getLogger(AbstractXMPPConnection.class.getName());
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/**
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* Counter to uniquely identify connections that are created.
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*/
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private final static AtomicInteger connectionCounter = new AtomicInteger(0);
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static {
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// Ensure the SmackConfiguration class is loaded by calling a method in it.
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SmackConfiguration.getVersion();
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}
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/**
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* Get the collection of listeners that are interested in connection creation events.
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*
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* @return a collection of listeners interested on new connections.
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*/
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protected static Collection<ConnectionCreationListener> getConnectionCreationListeners() {
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return XMPPConnectionRegistry.getConnectionCreationListeners();
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}
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/**
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* A collection of ConnectionListeners which listen for connection closing
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* and reconnection events.
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*/
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protected final Set<ConnectionListener> connectionListeners =
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new CopyOnWriteArraySet<ConnectionListener>();
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/**
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* A collection of PacketCollectors which collects packets for a specified filter
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* and perform blocking and polling operations on the result queue.
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* <p>
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* We use a ConcurrentLinkedQueue here, because its Iterator is weakly
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* consistent and we want {@link #invokePacketCollectors(Packet)} for-each
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* loop to be lock free. As drawback, removing a PacketCollector is O(n).
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* The alternative would be a synchronized HashSet, but this would mean a
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* synchronized block around every usage of <code>collectors</code>.
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* </p>
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*/
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private final Collection<PacketCollector> collectors = new ConcurrentLinkedQueue<PacketCollector>();
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/**
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* List of PacketListeners that will be notified when a new packet was received.
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*/
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private final Map<PacketListener, ListenerWrapper> recvListeners =
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new HashMap<PacketListener, ListenerWrapper>();
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/**
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* List of PacketListeners that will be notified when a new packet was sent.
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*/
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private final Map<PacketListener, ListenerWrapper> sendListeners =
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new HashMap<PacketListener, ListenerWrapper>();
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/**
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* List of PacketListeners that will be notified when a new packet is about to be
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* sent to the server. These interceptors may modify the packet before it is being
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* actually sent to the server.
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*/
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private final Map<PacketListener, InterceptorWrapper> interceptors =
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new HashMap<PacketListener, InterceptorWrapper>();
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protected final Lock connectionLock = new ReentrantLock();
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protected final Map<String, PacketExtension> streamFeatures = new HashMap<String, PacketExtension>();
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/**
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* The full JID of the authenticated user.
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*/
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protected String user;
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protected boolean connected = false;
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/**
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*
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*/
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private long packetReplyTimeout = SmackConfiguration.getDefaultPacketReplyTimeout();
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/**
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* The SmackDebugger allows to log and debug XML traffic.
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*/
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protected SmackDebugger debugger = null;
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/**
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* The Reader which is used for the debugger.
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*/
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protected Reader reader;
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/**
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* The Writer which is used for the debugger.
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*/
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protected Writer writer;
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/**
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* Set to success if the last features stanza from the server has been parsed. A XMPP connection
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* handshake can invoke multiple features stanzas, e.g. when TLS is activated a second feature
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* stanza is send by the server. This is set to true once the last feature stanza has been
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* parsed.
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*/
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protected final SynchronizationPoint<Exception> lastFeaturesReceived = new SynchronizationPoint<Exception>(
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AbstractXMPPConnection.this);
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/**
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* Set to success if the sasl feature has been received.
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*/
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protected final SynchronizationPoint<SmackException> saslFeatureReceived = new SynchronizationPoint<SmackException>(
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AbstractXMPPConnection.this);
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/**
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* The SASLAuthentication manager that is responsible for authenticating with the server.
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*/
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protected SASLAuthentication saslAuthentication = new SASLAuthentication(this);
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/**
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* A number to uniquely identify connections that are created. This is distinct from the
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* connection ID, which is a value sent by the server once a connection is made.
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*/
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protected final int connectionCounterValue = connectionCounter.getAndIncrement();
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/**
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* Holds the initial configuration used while creating the connection.
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*/
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protected final ConnectionConfiguration config;
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/**
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* Defines how the from attribute of outgoing stanzas should be handled.
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*/
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private FromMode fromMode = FromMode.OMITTED;
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protected XMPPInputOutputStream compressionHandler;
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/**
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* ExecutorService used to invoke the PacketListeners on newly arrived and parsed stanzas. It is
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* important that we use a <b>single threaded ExecutorService</b> in order to guarantee that the
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* PacketListeners are invoked in the same order the stanzas arrived.
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*/
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private final ThreadPoolExecutor executorService = new ThreadPoolExecutor(1, 1, 0, TimeUnit.SECONDS,
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new ArrayBlockingQueue<Runnable>(100), new SmackExecutorThreadFactory(connectionCounterValue));
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/**
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* SmackExecutorThreadFactory is a *static* inner class of XMPPConnection. Note that we must not
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* use anonymous classes in order to prevent threads from leaking.
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*/
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private static final class SmackExecutorThreadFactory implements ThreadFactory {
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private final int connectionCounterValue;
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private int count = 0;
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private SmackExecutorThreadFactory(int connectionCounterValue) {
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this.connectionCounterValue = connectionCounterValue;
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}
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@Override
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public Thread newThread(Runnable runnable) {
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Thread thread = new Thread(runnable, "Smack Executor Service " + count++ + " ("
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+ connectionCounterValue + ")");
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thread.setDaemon(true);
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return thread;
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}
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}
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private Roster roster;
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/**
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* The used host to establish the connection to
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*/
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protected String host;
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/**
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* The used port to establish the connection to
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*/
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protected int port;
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/**
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* Flag that indicates if the user is currently authenticated with the server.
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*/
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protected boolean authenticated = false;
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/**
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* Flag that indicates if the user was authenticated with the server when the connection
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* to the server was closed (abruptly or not).
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*/
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protected boolean wasAuthenticated = false;
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/**
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* Create a new XMPPConnection to a XMPP server.
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*
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* @param configuration The configuration which is used to establish the connection.
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*/
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protected AbstractXMPPConnection(ConnectionConfiguration configuration) {
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config = configuration;
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}
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protected ConnectionConfiguration getConfiguration() {
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return config;
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}
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@Override
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public String getServiceName() {
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if (serviceName != null) {
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return serviceName;
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}
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return config.getServiceName();
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}
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@Override
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public String getHost() {
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return host;
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}
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@Override
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public int getPort() {
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return port;
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}
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@Override
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public abstract String getConnectionID();
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@Override
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public abstract boolean isSecureConnection();
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protected abstract void sendPacketInternal(Packet packet) throws NotConnectedException;
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@Override
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public abstract void send(PlainStreamElement element) throws NotConnectedException;
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@Override
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public abstract boolean isUsingCompression();
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/**
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* Establishes a connection to the XMPP server and performs an automatic login
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* only if the previous connection state was logged (authenticated). It basically
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* creates and maintains a connection to the server.
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* <p>
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* Listeners will be preserved from a previous connection.
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*
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* @throws XMPPException if an error occurs on the XMPP protocol level.
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* @throws SmackException if an error occurs somewhere else besides XMPP protocol level.
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* @throws IOException
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* @throws ConnectionException with detailed information about the failed connection.
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*/
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public void connect() throws SmackException, IOException, XMPPException {
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throwAlreadyConnectedExceptionIfAppropriate();
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saslAuthentication.init();
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saslFeatureReceived.init();
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lastFeaturesReceived.init();
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connectInternal();
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}
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/**
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* Abstract method that concrete subclasses of XMPPConnection need to implement to perform their
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* way of XMPP connection establishment. Implementations are required to perform an automatic
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* login if the previous connection state was logged (authenticated).
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*
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* @throws SmackException
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* @throws IOException
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* @throws XMPPException
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*/
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protected abstract void connectInternal() throws SmackException, IOException, XMPPException;
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/**
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* Logs in to the server using the strongest authentication mode supported by
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* the server, then sets presence to available. If the server supports SASL authentication
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* then the user will be authenticated using SASL if not Non-SASL authentication will
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* be tried. If more than five seconds (default timeout) elapses in each step of the
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* authentication process without a response from the server, or if an error occurs, a
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* XMPPException will be thrown.<p>
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*
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* Before logging in (i.e. authenticate) to the server the connection must be connected.
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*
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* It is possible to log in without sending an initial available presence by using
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* {@link ConnectionConfigurationBuilder#setSendPresence(boolean)}. If this connection is
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* not interested in loading its roster upon login then use
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* {@link ConnectionConfigurationBuilder#setRosterLoadedAtLogin(boolean)}.
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* Finally, if you want to not pass a password and instead use a more advanced mechanism
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* while using SASL then you may be interested in using
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* {@link ConnectionConfigurationBuilder#setCallbackHandler(javax.security.auth.callback.CallbackHandler)}.
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* For more advanced login settings see {@link ConnectionConfiguration}.
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*
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* @throws XMPPException if an error occurs on the XMPP protocol level.
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* @throws SmackException if an error occurs somehwere else besides XMPP protocol level.
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* @throws IOException
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*/
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public void login() throws XMPPException, SmackException, IOException {
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throwNotConnectedExceptionIfAppropriate();
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throwAlreadyLoggedInExceptionIfAppropriate();
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if (isAnonymous()) {
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loginAnonymously();
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} else {
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loginNonAnonymously();
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}
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}
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protected abstract void loginNonAnonymously() throws XMPPException, SmackException, IOException;
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protected abstract void loginAnonymously() throws XMPPException, SmackException, IOException;
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@Override
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public final boolean isConnected() {
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return connected;
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}
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@Override
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public final boolean isAuthenticated() {
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return authenticated;
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}
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@Override
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public final String getUser() {
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return user;
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}
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protected void bindResourceAndEstablishSession(String resource) throws XMPPErrorException,
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IOException, SmackException {
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// Wait until either:
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// - the servers last features stanza has been parsed
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// - the timeout occurs
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LOGGER.finer("Waiting for last features to be received before continuing with resource binding");
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lastFeaturesReceived.checkIfSuccessOrWait();
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if (!hasFeature(Bind.ELEMENT, Bind.NAMESPACE)) {
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// Server never offered resource binding, which is REQURIED in XMPP client and
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// server implementations as per RFC6120 7.2
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throw new ResourceBindingNotOfferedException();
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}
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// Resource binding, see RFC6120 7.
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// Note that we can not use IQReplyFilter here, since the users full JID is not yet
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// available. It will become available right after the resource has been successfully bound.
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Bind bindResource = Bind.newSet(resource);
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PacketCollector packetCollector = createPacketCollectorAndSend(new PacketIDFilter(bindResource), bindResource);
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Bind response = packetCollector.nextResultOrThrow();
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user = response.getJid();
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serviceName = XmppStringUtils.parseDomain(user);
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if (hasFeature(Session.ELEMENT, Session.NAMESPACE) && !getConfiguration().isLegacySessionDisabled()) {
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Session session = new Session();
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packetCollector = createPacketCollectorAndSend(new PacketIDFilter(session), session);
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packetCollector.nextResultOrThrow();
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}
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}
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protected void afterSuccessfulLogin(final boolean resumed) throws NotConnectedException {
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// Indicate that we're now authenticated.
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this.authenticated = true;
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// If debugging is enabled, change the the debug window title to include the
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// name we are now logged-in as.
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// If DEBUG_ENABLED was set to true AFTER the connection was created the debugger
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// will be null
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if (config.isDebuggerEnabled() && debugger != null) {
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debugger.userHasLogged(user);
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}
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callConnectionAuthenticatedListener();
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// Set presence to online. It is important that this is done after
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// callConnectionAuthenticatedListener(), as this call will also
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// eventually load the roster. And we should load the roster before we
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// send the initial presence.
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if (config.isSendPresence() && !resumed) {
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if (!isAnonymous()) {
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// Make sure that the roster has setup its listeners prior sending the initial presence by calling
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// getRoster()
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getRoster();
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}
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sendPacket(new Presence(Presence.Type.available));
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}
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}
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@Override
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public boolean isAnonymous() {
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return config.isAnonymous();
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}
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private String serviceName;
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protected List<HostAddress> hostAddresses;
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protected void populateHostAddresses() throws Exception {
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// N.B.: Important to use config.serviceName and not AbstractXMPPConnection.serviceName
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if (config.host != null) {
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hostAddresses = new ArrayList<HostAddress>(1);
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HostAddress hostAddress;
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hostAddress = new HostAddress(config.host, config.port);
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hostAddresses.add(hostAddress);
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} else {
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hostAddresses = DNSUtil.resolveXMPPDomain(config.serviceName);
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}
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}
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protected Lock getConnectionLock() {
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return connectionLock;
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}
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protected void throwNotConnectedExceptionIfAppropriate() throws NotConnectedException {
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if (!isConnected()) {
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throw new NotConnectedException();
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}
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}
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protected void throwAlreadyConnectedExceptionIfAppropriate() throws AlreadyConnectedException {
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if (isConnected()) {
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throw new AlreadyConnectedException();
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}
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}
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protected void throwAlreadyLoggedInExceptionIfAppropriate() throws AlreadyLoggedInException {
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if (isAuthenticated()) {
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throw new AlreadyLoggedInException();
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}
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}
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@Override
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public void sendPacket(Packet packet) throws NotConnectedException {
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if (packet == null) {
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throw new IllegalArgumentException("Packet must not be null");
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}
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throwNotConnectedExceptionIfAppropriate();
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switch (fromMode) {
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case OMITTED:
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packet.setFrom(null);
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break;
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case USER:
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packet.setFrom(getUser());
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break;
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case UNCHANGED:
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default:
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break;
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}
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// Invoke interceptors for the new packet that is about to be sent. Interceptors may modify
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// the content of the packet.
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firePacketInterceptors(packet);
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|
sendPacketInternal(packet);
|
|
}
|
|
|
|
@Override
|
|
public Roster getRoster() {
|
|
if (isAnonymous()) {
|
|
throw new IllegalStateException("Anonymous users can't have a roster");
|
|
}
|
|
// synchronize against login()
|
|
synchronized(this) {
|
|
if (roster == null) {
|
|
roster = new Roster(this);
|
|
}
|
|
if (!isAuthenticated()) {
|
|
return roster;
|
|
}
|
|
}
|
|
|
|
// If this is the first time the user has asked for the roster after calling
|
|
// login, we want to wait for the server to send back the user's roster. This
|
|
// behavior shields API users from having to worry about the fact that roster
|
|
// operations are asynchronous, although they'll still have to listen for
|
|
// changes to the roster. Note: because of this waiting logic, internal
|
|
// Smack code should be wary about calling the getRoster method, and may need to
|
|
// access the roster object directly.
|
|
// Also only check for rosterInitalized is isRosterLoadedAtLogin is set, otherwise the user
|
|
// has to manually call Roster.reload() before he can expect a initialized roster.
|
|
if (!roster.rosterInitialized && config.isRosterLoadedAtLogin()) {
|
|
try {
|
|
synchronized (roster) {
|
|
long waitTime = getPacketReplyTimeout();
|
|
long start = System.currentTimeMillis();
|
|
while (!roster.rosterInitialized) {
|
|
if (waitTime <= 0) {
|
|
break;
|
|
}
|
|
roster.wait(waitTime);
|
|
long now = System.currentTimeMillis();
|
|
waitTime -= now - start;
|
|
start = now;
|
|
}
|
|
}
|
|
}
|
|
catch (InterruptedException ie) {
|
|
// Ignore.
|
|
}
|
|
}
|
|
return roster;
|
|
}
|
|
|
|
/**
|
|
* Returns the SASLAuthentication manager that is responsible for authenticating with
|
|
* the server.
|
|
*
|
|
* @return the SASLAuthentication manager that is responsible for authenticating with
|
|
* the server.
|
|
*/
|
|
protected SASLAuthentication getSASLAuthentication() {
|
|
return saslAuthentication;
|
|
}
|
|
|
|
/**
|
|
* Closes the connection by setting presence to unavailable then closing the connection to
|
|
* the XMPP server. The XMPPConnection can still be used for connecting to the server
|
|
* again.
|
|
*
|
|
* @throws NotConnectedException
|
|
*/
|
|
public void disconnect() throws NotConnectedException {
|
|
disconnect(new Presence(Presence.Type.unavailable));
|
|
}
|
|
|
|
/**
|
|
* Closes the connection. A custom unavailable presence is sent to the server, followed
|
|
* by closing the stream. The XMPPConnection can still be used for connecting to the server
|
|
* again. A custom unavailable presence is useful for communicating offline presence
|
|
* information such as "On vacation". Typically, just the status text of the presence
|
|
* packet is set with online information, but most XMPP servers will deliver the full
|
|
* presence packet with whatever data is set.
|
|
*
|
|
* @param unavailablePresence the presence packet to send during shutdown.
|
|
* @throws NotConnectedException
|
|
*/
|
|
public synchronized void disconnect(Presence unavailablePresence) throws NotConnectedException {
|
|
if (!isConnected()) {
|
|
return;
|
|
}
|
|
|
|
sendPacket(unavailablePresence);
|
|
shutdown();
|
|
callConnectionClosedListener();
|
|
}
|
|
|
|
/**
|
|
* Shuts the current connection down.
|
|
*/
|
|
protected abstract void shutdown();
|
|
|
|
@Override
|
|
public void addConnectionListener(ConnectionListener connectionListener) {
|
|
if (connectionListener == null) {
|
|
return;
|
|
}
|
|
connectionListeners.add(connectionListener);
|
|
}
|
|
|
|
@Override
|
|
public void removeConnectionListener(ConnectionListener connectionListener) {
|
|
connectionListeners.remove(connectionListener);
|
|
}
|
|
|
|
/**
|
|
* Get the collection of listeners that are interested in connection events.
|
|
*
|
|
* @return a collection of listeners interested on connection events.
|
|
*/
|
|
protected Collection<ConnectionListener> getConnectionListeners() {
|
|
return connectionListeners;
|
|
}
|
|
|
|
@Override
|
|
public PacketCollector createPacketCollectorAndSend(IQ packet) throws NotConnectedException {
|
|
PacketFilter packetFilter = new IQReplyFilter(packet, this);
|
|
// Create the packet collector before sending the packet
|
|
PacketCollector packetCollector = createPacketCollectorAndSend(packetFilter, packet);
|
|
return packetCollector;
|
|
}
|
|
|
|
@Override
|
|
public PacketCollector createPacketCollectorAndSend(PacketFilter packetFilter, Packet packet)
|
|
throws NotConnectedException {
|
|
// Create the packet collector before sending the packet
|
|
PacketCollector packetCollector = createPacketCollector(packetFilter);
|
|
try {
|
|
// Now we can send the packet as the collector has been created
|
|
sendPacket(packet);
|
|
}
|
|
catch (NotConnectedException | RuntimeException e) {
|
|
packetCollector.cancel();
|
|
throw e;
|
|
}
|
|
return packetCollector;
|
|
}
|
|
|
|
@Override
|
|
public PacketCollector createPacketCollector(PacketFilter packetFilter) {
|
|
PacketCollector collector = new PacketCollector(this, packetFilter);
|
|
// Add the collector to the list of active collectors.
|
|
collectors.add(collector);
|
|
return collector;
|
|
}
|
|
|
|
@Override
|
|
public void removePacketCollector(PacketCollector collector) {
|
|
collectors.remove(collector);
|
|
}
|
|
|
|
@Override
|
|
public void addPacketListener(PacketListener packetListener, PacketFilter packetFilter) {
|
|
if (packetListener == null) {
|
|
throw new NullPointerException("Packet listener is null.");
|
|
}
|
|
ListenerWrapper wrapper = new ListenerWrapper(packetListener, packetFilter);
|
|
synchronized (recvListeners) {
|
|
recvListeners.put(packetListener, wrapper);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean removePacketListener(PacketListener packetListener) {
|
|
synchronized (recvListeners) {
|
|
return recvListeners.remove(packetListener) != null;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void addPacketSendingListener(PacketListener packetListener, PacketFilter packetFilter) {
|
|
if (packetListener == null) {
|
|
throw new NullPointerException("Packet listener is null.");
|
|
}
|
|
ListenerWrapper wrapper = new ListenerWrapper(packetListener, packetFilter);
|
|
synchronized (sendListeners) {
|
|
sendListeners.put(packetListener, wrapper);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void removePacketSendingListener(PacketListener packetListener) {
|
|
synchronized (sendListeners) {
|
|
sendListeners.remove(packetListener);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Process all packet listeners for sending packets.
|
|
* <p>
|
|
* Compared to {@link #firePacketInterceptors(Packet)}, the listeners will be invoked in a new thread.
|
|
* </p>
|
|
*
|
|
* @param packet the packet to process.
|
|
*/
|
|
@SuppressWarnings("javadoc")
|
|
protected void firePacketSendingListeners(final Packet packet) {
|
|
final List<PacketListener> listenersToNotify = new LinkedList<PacketListener>();
|
|
synchronized (sendListeners) {
|
|
for (ListenerWrapper listenerWrapper : sendListeners.values()) {
|
|
if (listenerWrapper.filterMatches(packet)) {
|
|
listenersToNotify.add(listenerWrapper.getListener());
|
|
}
|
|
}
|
|
}
|
|
if (listenersToNotify.isEmpty()) {
|
|
return;
|
|
}
|
|
// Notify in a new thread, because we can
|
|
Async.go(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
for (PacketListener listener : listenersToNotify) {
|
|
try {
|
|
listener.processPacket(packet);
|
|
}
|
|
catch (Exception e) {
|
|
LOGGER.log(Level.WARNING, "Sending listener threw exception", e);
|
|
continue;
|
|
}
|
|
}
|
|
}}
|
|
, "Smack Sending Listeners Notification (" + getConnectionCounter() + ')');
|
|
}
|
|
|
|
@Override
|
|
public void addPacketInterceptor(PacketListener packetInterceptor,
|
|
PacketFilter packetFilter) {
|
|
if (packetInterceptor == null) {
|
|
throw new NullPointerException("Packet interceptor is null.");
|
|
}
|
|
InterceptorWrapper interceptorWrapper = new InterceptorWrapper(packetInterceptor, packetFilter);
|
|
synchronized (interceptors) {
|
|
interceptors.put(packetInterceptor, interceptorWrapper);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void removePacketInterceptor(PacketListener packetInterceptor) {
|
|
synchronized (interceptors) {
|
|
interceptors.remove(packetInterceptor);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Process interceptors. Interceptors may modify the packet that is about to be sent.
|
|
* Since the thread that requested to send the packet will invoke all interceptors, it
|
|
* is important that interceptors perform their work as soon as possible so that the
|
|
* thread does not remain blocked for a long period.
|
|
*
|
|
* @param packet the packet that is going to be sent to the server
|
|
*/
|
|
private void firePacketInterceptors(Packet packet) {
|
|
List<PacketListener> interceptorsToInvoke = new LinkedList<PacketListener>();
|
|
synchronized (interceptors) {
|
|
for (InterceptorWrapper interceptorWrapper : interceptors.values()) {
|
|
if (interceptorWrapper.filterMatches(packet)) {
|
|
interceptorsToInvoke.add(interceptorWrapper.getInterceptor());
|
|
}
|
|
}
|
|
}
|
|
for (PacketListener interceptor : interceptorsToInvoke) {
|
|
try {
|
|
interceptor.processPacket(packet);
|
|
} catch (Exception e) {
|
|
LOGGER.log(Level.SEVERE, "Packet interceptor threw exception", e);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Initialize the {@link #debugger}. You can specify a customized {@link SmackDebugger}
|
|
* by setup the system property <code>smack.debuggerClass</code> to the implementation.
|
|
*
|
|
* @throws IllegalStateException if the reader or writer isn't yet initialized.
|
|
* @throws IllegalArgumentException if the SmackDebugger can't be loaded.
|
|
*/
|
|
protected void initDebugger() {
|
|
if (reader == null || writer == null) {
|
|
throw new NullPointerException("Reader or writer isn't initialized.");
|
|
}
|
|
// If debugging is enabled, we open a window and write out all network traffic.
|
|
if (config.isDebuggerEnabled()) {
|
|
if (debugger == null) {
|
|
debugger = SmackConfiguration.createDebugger(this, writer, reader);
|
|
}
|
|
|
|
if (debugger == null) {
|
|
LOGGER.severe("Debugging enabled but could not find debugger class");
|
|
} else {
|
|
// Obtain new reader and writer from the existing debugger
|
|
reader = debugger.newConnectionReader(reader);
|
|
writer = debugger.newConnectionWriter(writer);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public long getPacketReplyTimeout() {
|
|
return packetReplyTimeout;
|
|
}
|
|
|
|
@Override
|
|
public void setPacketReplyTimeout(long timeout) {
|
|
packetReplyTimeout = timeout;
|
|
}
|
|
|
|
/**
|
|
* Processes a packet after it's been fully parsed by looping through the installed
|
|
* packet collectors and listeners and letting them examine the packet to see if
|
|
* they are a match with the filter.
|
|
*
|
|
* @param packet the packet to process.
|
|
*/
|
|
protected void processPacket(Packet packet) {
|
|
// Deliver the incoming packet to listeners.
|
|
executorService.submit(new ListenerNotification(packet));
|
|
}
|
|
|
|
/**
|
|
* A runnable to notify all listeners and packet collectors of a packet.
|
|
*/
|
|
private class ListenerNotification implements Runnable {
|
|
|
|
private final Packet packet;
|
|
|
|
public ListenerNotification(Packet packet) {
|
|
this.packet = packet;
|
|
}
|
|
|
|
public void run() {
|
|
invokePacketCollectorsAndNotifyRecvListeners(packet);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Invoke {@link PacketCollector#processPacket(Packet)} for every
|
|
* PacketCollector with the given packet. Also notify the receive listeners with a matching packet filter about the packet.
|
|
*
|
|
* @param packet the packet to notify the PacketCollectors and receive listeners about.
|
|
*/
|
|
protected void invokePacketCollectorsAndNotifyRecvListeners(Packet packet) {
|
|
// Loop through all collectors and notify the appropriate ones.
|
|
for (PacketCollector collector: collectors) {
|
|
collector.processPacket(packet);
|
|
}
|
|
|
|
// Notify the receive listeners interested in the packet
|
|
List<PacketListener> listenersToNotify = new LinkedList<PacketListener>();
|
|
synchronized (recvListeners) {
|
|
for (ListenerWrapper listenerWrapper : recvListeners.values()) {
|
|
if (listenerWrapper.filterMatches(packet)) {
|
|
listenersToNotify.add(listenerWrapper.getListener());
|
|
}
|
|
}
|
|
}
|
|
|
|
for (PacketListener listener : listenersToNotify) {
|
|
try {
|
|
listener.processPacket(packet);
|
|
} catch(NotConnectedException e) {
|
|
LOGGER.log(Level.WARNING, "Got not connected exception, aborting", e);
|
|
break;
|
|
} catch (Exception e) {
|
|
LOGGER.log(Level.SEVERE, "Exception in packet listener", e);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets whether the connection has already logged in the server. This method assures that the
|
|
* {@link #wasAuthenticated} flag is never reset once it has ever been set.
|
|
*
|
|
*/
|
|
protected void setWasAuthenticated() {
|
|
// Never reset the flag if the connection has ever been authenticated
|
|
if (!wasAuthenticated) {
|
|
wasAuthenticated = authenticated;
|
|
}
|
|
}
|
|
|
|
protected void callConnectionConnectedListener() {
|
|
for (ConnectionListener listener : getConnectionListeners()) {
|
|
listener.connected(this);
|
|
}
|
|
}
|
|
|
|
protected void callConnectionAuthenticatedListener() {
|
|
for (ConnectionListener listener : getConnectionListeners()) {
|
|
listener.authenticated(this);
|
|
}
|
|
}
|
|
|
|
void callConnectionClosedListener() {
|
|
for (ConnectionListener listener : getConnectionListeners()) {
|
|
try {
|
|
listener.connectionClosed();
|
|
}
|
|
catch (Exception e) {
|
|
// Catch and print any exception so we can recover
|
|
// from a faulty listener and finish the shutdown process
|
|
LOGGER.log(Level.SEVERE, "Error in listener while closing connection", e);
|
|
}
|
|
}
|
|
}
|
|
|
|
protected void callConnectionClosedOnErrorListener(Exception e) {
|
|
LOGGER.log(Level.WARNING, "Connection closed with error", e);
|
|
for (ConnectionListener listener : getConnectionListeners()) {
|
|
try {
|
|
listener.connectionClosedOnError(e);
|
|
}
|
|
catch (Exception e2) {
|
|
// Catch and print any exception so we can recover
|
|
// from a faulty listener
|
|
LOGGER.log(Level.SEVERE, "Error in listener while closing connection", e2);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A wrapper class to associate a packet filter with a listener.
|
|
*/
|
|
protected static class ListenerWrapper {
|
|
|
|
private final PacketListener packetListener;
|
|
private final PacketFilter packetFilter;
|
|
|
|
/**
|
|
* Create a class which associates a packet filter with a listener.
|
|
*
|
|
* @param packetListener the packet listener.
|
|
* @param packetFilter the associated filter or null if it listen for all packets.
|
|
*/
|
|
public ListenerWrapper(PacketListener packetListener, PacketFilter packetFilter) {
|
|
this.packetListener = packetListener;
|
|
this.packetFilter = packetFilter;
|
|
}
|
|
|
|
public boolean filterMatches(Packet packet) {
|
|
return packetFilter == null || packetFilter.accept(packet);
|
|
}
|
|
|
|
public PacketListener getListener() {
|
|
return packetListener;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A wrapper class to associate a packet filter with an interceptor.
|
|
*/
|
|
protected static class InterceptorWrapper {
|
|
|
|
private final PacketListener packetInterceptor;
|
|
private final PacketFilter packetFilter;
|
|
|
|
/**
|
|
* Create a class which associates a packet filter with an interceptor.
|
|
*
|
|
* @param packetInterceptor the interceptor.
|
|
* @param packetFilter the associated filter or null if it intercepts all packets.
|
|
*/
|
|
public InterceptorWrapper(PacketListener packetInterceptor, PacketFilter packetFilter) {
|
|
this.packetInterceptor = packetInterceptor;
|
|
this.packetFilter = packetFilter;
|
|
}
|
|
|
|
public boolean filterMatches(Packet packet) {
|
|
return packetFilter == null || packetFilter.accept(packet);
|
|
}
|
|
|
|
public PacketListener getInterceptor() {
|
|
return packetInterceptor;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public int getConnectionCounter() {
|
|
return connectionCounterValue;
|
|
}
|
|
|
|
@Override
|
|
public void setFromMode(FromMode fromMode) {
|
|
this.fromMode = fromMode;
|
|
}
|
|
|
|
@Override
|
|
public FromMode getFromMode() {
|
|
return this.fromMode;
|
|
}
|
|
|
|
@Override
|
|
protected void finalize() throws Throwable {
|
|
try {
|
|
// It's usually not a good idea to rely on finalize. But this is the easiest way to
|
|
// avoid the "Smack Listener Processor" leaking. The thread(s) of the executor have a
|
|
// reference to their ExecutorService which prevents the ExecutorService from being
|
|
// gc'ed. It is possible that the XMPPConnection instance is gc'ed while the
|
|
// listenerExecutor ExecutorService call not be gc'ed until it got shut down.
|
|
executorService.shutdownNow();
|
|
removeCallbacksService.shutdownNow();
|
|
}
|
|
finally {
|
|
super.finalize();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public RosterStore getRosterStore() {
|
|
return config.getRosterStore();
|
|
}
|
|
|
|
@Override
|
|
public boolean isRosterLoadedAtLogin() {
|
|
return config.isRosterLoadedAtLogin();
|
|
}
|
|
|
|
protected final void parseFeatures(XmlPullParser parser) throws XmlPullParserException,
|
|
IOException, SmackException {
|
|
streamFeatures.clear();
|
|
final int initialDepth = parser.getDepth();
|
|
while (true) {
|
|
int eventType = parser.next();
|
|
|
|
if (eventType == XmlPullParser.START_TAG && parser.getDepth() == initialDepth + 1) {
|
|
PacketExtension streamFeature = null;
|
|
String name = parser.getName();
|
|
String namespace = parser.getNamespace();
|
|
switch (name) {
|
|
case StartTls.ELEMENT:
|
|
streamFeature = PacketParserUtils.parseStartTlsFeature(parser);
|
|
break;
|
|
case Mechanisms.ELEMENT:
|
|
streamFeature = new Mechanisms(PacketParserUtils.parseMechanisms(parser));
|
|
break;
|
|
case Bind.ELEMENT:
|
|
streamFeature = Bind.Feature.INSTANCE;
|
|
break;
|
|
case Session.ELEMENT:
|
|
streamFeature = Session.Feature.INSTANCE;
|
|
break;
|
|
case RosterVer.ELEMENT:
|
|
if(namespace.equals(RosterVer.NAMESPACE)) {
|
|
streamFeature = RosterVer.INSTANCE;
|
|
}
|
|
else {
|
|
LOGGER.severe("Unkown Roster Versioning Namespace: "
|
|
+ namespace
|
|
+ ". Roster versioning not enabled");
|
|
}
|
|
break;
|
|
case Compress.Feature.ELEMENT:
|
|
streamFeature = PacketParserUtils.parseCompressionFeature(parser);
|
|
break;
|
|
default:
|
|
PacketExtensionProvider<PacketExtension> provider = ProviderManager.getStreamFeatureProvider(name, namespace);
|
|
if (provider != null) {
|
|
streamFeature = provider.parse(parser);
|
|
}
|
|
break;
|
|
}
|
|
if (streamFeature != null) {
|
|
addStreamFeature(streamFeature);
|
|
}
|
|
}
|
|
else if (eventType == XmlPullParser.END_TAG && parser.getDepth() == initialDepth) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (hasFeature(Mechanisms.ELEMENT, Mechanisms.NAMESPACE)) {
|
|
// Only proceed with SASL auth if TLS is disabled or if the server doesn't announce it
|
|
if (!hasFeature(StartTls.ELEMENT, StartTls.NAMESPACE)
|
|
|| config.getSecurityMode() == SecurityMode.disabled) {
|
|
saslFeatureReceived.reportSuccess();
|
|
}
|
|
}
|
|
|
|
// If the server reported the bind feature then we are that that we did SASL and maybe
|
|
// STARTTLS. We can then report that the last 'stream:features' have been parsed
|
|
if (hasFeature(Bind.ELEMENT, Bind.NAMESPACE)) {
|
|
if (!hasFeature(Compress.Feature.ELEMENT, Compress.NAMESPACE)
|
|
|| !config.isCompressionEnabled()) {
|
|
// This was was last features from the server is either it did not contain
|
|
// compression or if we disabled it
|
|
lastFeaturesReceived.reportSuccess();
|
|
}
|
|
}
|
|
afterFeaturesReceived();
|
|
}
|
|
|
|
protected void afterFeaturesReceived() throws SecurityRequiredException, NotConnectedException {
|
|
// Default implementation does nothing
|
|
}
|
|
|
|
@SuppressWarnings("unchecked")
|
|
@Override
|
|
public <F extends PacketExtension> F getFeature(String element, String namespace) {
|
|
return (F) streamFeatures.get(XmppStringUtils.generateKey(element, namespace));
|
|
}
|
|
|
|
@Override
|
|
public boolean hasFeature(String element, String namespace) {
|
|
return getFeature(element, namespace) != null;
|
|
}
|
|
|
|
private void addStreamFeature(PacketExtension feature) {
|
|
String key = XmppStringUtils.generateKey(feature.getElementName(), feature.getNamespace());
|
|
streamFeatures.put(key, feature);
|
|
}
|
|
|
|
private final ScheduledExecutorService removeCallbacksService = new ScheduledThreadPoolExecutor(1,
|
|
new SmackExecutorThreadFactory(connectionCounterValue));
|
|
|
|
@Override
|
|
public void sendStanzaWithResponseCallback(Packet stanza, PacketFilter replyFilter,
|
|
PacketListener callback) throws NotConnectedException {
|
|
sendStanzaWithResponseCallback(stanza, replyFilter, callback, null);
|
|
}
|
|
|
|
@Override
|
|
public void sendStanzaWithResponseCallback(Packet stanza, PacketFilter replyFilter,
|
|
PacketListener callback, ExceptionCallback exceptionCallback)
|
|
throws NotConnectedException {
|
|
sendStanzaWithResponseCallback(stanza, replyFilter, callback, exceptionCallback,
|
|
getPacketReplyTimeout());
|
|
}
|
|
|
|
@Override
|
|
public void sendStanzaWithResponseCallback(Packet stanza, PacketFilter replyFilter,
|
|
final PacketListener callback, final ExceptionCallback exceptionCallback,
|
|
long timeout) throws NotConnectedException {
|
|
if (stanza == null) {
|
|
throw new IllegalArgumentException("stanza must not be null");
|
|
}
|
|
if (replyFilter == null) {
|
|
// While Smack allows to add PacketListeners with a PacketFilter value of 'null', we
|
|
// disallow it here in the async API as it makes no sense
|
|
throw new IllegalArgumentException("replyFilter must not be null");
|
|
}
|
|
if (callback == null) {
|
|
throw new IllegalArgumentException("callback must not be null");
|
|
}
|
|
final PacketListener packetListener = new PacketListener() {
|
|
@Override
|
|
public void processPacket(Packet packet) throws NotConnectedException {
|
|
try {
|
|
XMPPErrorException.ifHasErrorThenThrow(packet);
|
|
callback.processPacket(packet);
|
|
}
|
|
catch (XMPPErrorException e) {
|
|
if (exceptionCallback != null) {
|
|
exceptionCallback.processException(e);
|
|
}
|
|
}
|
|
finally {
|
|
removePacketListener(this);
|
|
}
|
|
}
|
|
};
|
|
removeCallbacksService.schedule(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
boolean removed = removePacketListener(packetListener);
|
|
// If the packetListener got removed, then it was never run and
|
|
// we never received a response, inform the exception callback
|
|
if (removed && exceptionCallback != null) {
|
|
exceptionCallback.processException(new NoResponseException());
|
|
}
|
|
}
|
|
}, timeout, TimeUnit.MILLISECONDS);
|
|
addPacketListener(packetListener, replyFilter);
|
|
sendPacket(stanza);
|
|
}
|
|
|
|
@Override
|
|
public void sendIqWithResponseCallback(IQ iqRequest, PacketListener callback)
|
|
throws NotConnectedException {
|
|
sendIqWithResponseCallback(iqRequest, callback, null);
|
|
}
|
|
|
|
@Override
|
|
public void sendIqWithResponseCallback(IQ iqRequest, PacketListener callback,
|
|
ExceptionCallback exceptionCallback) throws NotConnectedException {
|
|
sendIqWithResponseCallback(iqRequest, callback, exceptionCallback, getPacketReplyTimeout());
|
|
}
|
|
|
|
@Override
|
|
public void sendIqWithResponseCallback(IQ iqRequest, final PacketListener callback,
|
|
final ExceptionCallback exceptionCallback, long timeout)
|
|
throws NotConnectedException {
|
|
PacketFilter replyFilter = new IQReplyFilter(iqRequest, this);
|
|
sendStanzaWithResponseCallback(iqRequest, replyFilter, callback, exceptionCallback, timeout);
|
|
}
|
|
|
|
private long lastStanzaReceived;
|
|
|
|
public long getLastStanzaReceived() {
|
|
return lastStanzaReceived;
|
|
}
|
|
|
|
protected void reportStanzaReceived() {
|
|
this.lastStanzaReceived = System.currentTimeMillis();
|
|
}
|
|
|
|
}
|