/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright (C) 2002-2003 Jive Software. All rights reserved.
* ====================================================================
* The Jive Software License (based on Apache Software License, Version 1.1)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by
* Jive Software (http://www.jivesoftware.com)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Smack" and "Jive Software" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please
* contact webmaster@jivesoftware.com.
*
* 5. Products derived from this software may not be called "Smack",
* nor may "Smack" appear in their name, without prior written
* permission of Jive Software.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL JIVE SOFTWARE OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*/
package org.jivesoftware.smack;
import org.jivesoftware.smack.packet.*;
import org.jivesoftware.smack.filter.*;
import javax.swing.*;
import java.net.*;
import java.io.*;
import java.awt.*;
import java.security.*;
import java.util.PropertyPermission;
/**
* Creates a connection to a XMPP server. A simple use of this API might
* look like the following:
*
* // Create a connection to the jivesoftware.com XMPP server.
* XMPPConnection con = new XMPPConnection("jivesoftware.com");
* // Most servers require you to login before performing other tasks.
* con.login("jsmith", "mypass");
* // Start a new conversation with John Doe and send him a message.
* Chat chat = con.createChat("jdoe@jabber.org");
* chat.sendMessage("Hey, how's it going?");
*
*
* @author Matt Tucker
*/
public class XMPPConnection {
private static final String NEWLINE = "\n";
/**
* Value that indicates whether debugging is enabled. When enabled, a debug
* window will apear for each new connection that will contain the following
* information:
* - Client Traffic -- raw XML traffic generated by Smack and sent to the server.
*
- Server Traffic -- raw XML traffic sent by the server to the client.
*
- Interpreted Packets -- shows XML packets from the server as parsed by Smack.
*
*
* Debugging can be enabled by setting this field to true, or by setting the Java system
* property smack.debugEnabled to true. The system property can be set on the
* command line such as "java SomeApp -Dsmack.debugEnabled=true".
*/
public static boolean DEBUG_ENABLED = false;
static {
try {
// See if we're allowed to access the debug flag system property. This will
// not be allowed on applets, so we need to do a special check.
AccessController.checkPermission(new PropertyPermission("smack.debugEnabled", "read"));
// Passed permission check, so must be allowed. Get the value of the flag.
DEBUG_ENABLED = Boolean.getBoolean("smack.debugEnabled");
}
catch (AccessControlException ace) { }
}
private JFrame debugFrame = null;
protected String host;
protected int port;
protected Socket socket;
String connectionID;
private String username = null;
private String resource = null;
private boolean connected = false;
private boolean authenticated = false;
private PacketWriter packetWriter;
private PacketReader packetReader;
Roster roster = null;
private AccountManager accountManager = null;
Writer writer;
Reader reader;
/**
* Constructor for use by classes extending this one.
*/
protected XMPPConnection() {
}
/**
* Creates a new connection to the specified XMPP server. The default port of 5222 will
* be used.
*
* @param host the name of the XMPP server to connect to; e.g. jivesoftware.com.
* @throws XMPPException if an error occurs while trying to establish a connection.
*/
public XMPPConnection(String host) throws XMPPException {
this(host, 5222);
}
/**
* Creates a new connection to the to the specified XMPP server on the given port.
*
* @param host the name of the XMPP server to connect to; e.g. jivesoftware.com.
* @param port the port on the server that should be used; e.g. 5222.
* @throws XMPPException if an error occurs while trying to establish a connection.
*/
public XMPPConnection(String host, int port) throws XMPPException {
this.host = host;
this.port = port;
try {
this.socket = new Socket(host, port);
}
catch (UnknownHostException uhe) {
throw new XMPPException("Could not connect to " + host + ":" + port + ".", uhe);
}
catch (IOException ioe) {
throw new XMPPException("XMPPError connecting to " + host + ":" + port + ".", ioe);
}
init();
}
/**
* Returns the connection ID for this connection, which is the value set by the server
* when opening a XMPP stream. If the server does not set a connection ID, this value
* will be null.
*
* @return the ID of this connection returned from the XMPP server.
*/
public String getConnectionID() {
return connectionID;
}
/**
* Returns the host name of the XMPP server for this connection.
*
* @return the host name of the XMPP server.
*/
public String getHost() {
return host;
}
/**
* Returns the port number of the XMPP server for this connection. The default port
* for normal connections is 5222. The default port for SSL connections is 5223.
*
* @return the port number of the XMPP server.
*/
public int getPort() {
return port;
}
/**
* Returns the username that was used to login or null if not logged in yet.
*
* @return the username used to login.
*/
public String getUsername() {
if (!isAuthenticated()) {
return null;
}
return username;
}
/**
* Returns the resource that was used to login or null if not logged in yet.
* If no resource was used to login, the default resource "Smack" will be returned.
*
* @return the resource used to login.
*/
public String getResource() {
if (!isAuthenticated()) {
return null;
}
return resource;
}
/**
* Logs in to the server using the strongest authentication mode supported by
* the server, then set our presence to available. If more than five seconds
* elapses in each step of the authentication process without a response from
* the server, or if an error occurs, a XMPPException will be thrown.
*
* @param username the username.
* @param password the password.
* @throws XMPPException if an error occurs.
*/
public void login(String username, String password) throws XMPPException {
login(username, password, "Smack");
}
/**
* Logs in to the server using the strongest authentication mode supported by
* the server, then set our presence to available. If more than five seconds
* elapses in each step of the authentication process without a response from
* the server, or if an error occurs, a XMPPException will be thrown.
*
* @param username the username.
* @param password the password.
* @param resource the resource.
* @throws XMPPException if an error occurs.
* @throws IllegalStateException if not connected to the server, or already logged in
* to the serrver.
*/
public synchronized void login(String username, String password, String resource)
throws XMPPException
{
if (!isConnected()) {
throw new IllegalStateException("Not connected to server.");
}
if (authenticated) {
throw new IllegalStateException("Already logged in to server.");
}
this.username = username;
this.resource = resource;
// If we send an authentication packet in "get" mode with just the username,
// the server will return the list of authentication protocols it supports.
Authentication discoveryAuth = new Authentication();
discoveryAuth.setType(IQ.Type.GET);
discoveryAuth.setUsername(username);
PacketCollector collector = packetReader.createPacketCollector(
new PacketIDFilter(discoveryAuth.getPacketID()));
// Send the packet
packetWriter.sendPacket(discoveryAuth);
// Wait up to five seconds for a response from the server.
IQ response = (IQ)collector.nextResult(5000);
if (response == null) {
throw new XMPPException("No response from the server.");
}
// If the server replied with an error, throw an exception.
else if (response.getType() == IQ.Type.ERROR) {
throw new XMPPException(response.getError());
}
// Otherwise, no error so continue processing.
Authentication authTypes = (Authentication)response;
collector.cancel();
// Now, create the authentication packet we'll send to the server.
Authentication auth = new Authentication();
auth.setUsername(username);
// Figure out if we should use digest or plain text authentication.
if (authTypes.getDigest() != null) {
auth.setDigest(connectionID, password);
}
else if (authTypes.getPassword() != null) {
auth.setPassword(password);
}
else {
throw new XMPPException("Server does not support compatible authentication mechanism.");
}
auth.setResource(resource);
collector = packetReader.createPacketCollector(
new PacketIDFilter(auth.getPacketID()));
// Send the packet.
packetWriter.sendPacket(auth);
// Wait up to five seconds for a response from the server.
response = (IQ)collector.nextResult(5000);
if (response == null) {
throw new XMPPException("Authentication failed.");
}
else if (response.getType() == IQ.Type.ERROR) {
throw new XMPPException(response.getError());
}
// We're done with the collector, so explicitly cancel it.
collector.cancel();
// Set presence to online.
packetWriter.sendPacket(new Presence(Presence.Type.AVAILABLE));
// Finally, create the roster.
this.roster = new Roster(this);
roster.reload();
// Indicate that we're now authenticated.
authenticated = true;
// If debugging is enabled, change the the debug window title to include the
// name we are now logged-in as.
if (DEBUG_ENABLED) {
String title = "Smack Debug Window -- " + username + "@" + getHost() + ":" + getPort();
if (resource != null) {
title += "/" + resource;
}
debugFrame.setTitle(title);
}
}
/**
* Returns the roster for the user logged into the server. If the user has not yet
* logged into the server, this method will return null.
*
* @return the user's roster, or null if the user has not logged in yet.
*/
public Roster getRoster() {
if (roster == null) {
return null;
}
// If this is the first time the user has asked for the roster after calling
// login, we want to wait up to 2 seconds 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.
int elapsed = 0;
while (!roster.rosterInitialized && elapsed <= 2000) {
try {
Thread.sleep(500);
}
catch (Exception e) { }
elapsed += 500;
}
return roster;
}
/**
* Returns an account manager instance for this connection.
*
* @return an account manager for this connection.
*/
public synchronized AccountManager getAccountManager() {
if (accountManager == null) {
accountManager = new AccountManager(this);
}
return accountManager;
}
/**
* Creates a new chat with the specified participant. The participant should
* be a valid XMPP user such as jdoe@jivesoftware.com or
* jdoe@jivesoftware.com/work.
*
* @param participant the person to start the conversation with.
* @return a new Chat object.
*/
public Chat createChat(String participant) {
if (!isConnected()) {
throw new IllegalStateException("Not connected to server.");
}
return new Chat(this, participant);
}
/**
* Creates a new group chat connected to the specified room. The room name
* should be a valid conference id, such as chatroom@jivesoftware.com.
*
* @param room the name of the room.
* @return a new GroupChat object.
*/
public GroupChat createGroupChat(String room) {
if (!isConnected()) {
throw new IllegalStateException("Not connected to server.");
}
return new GroupChat(this, room);
}
/**
* Returns true if currently connected to the XMPP server.
*
* @return true if connected.
*/
public boolean isConnected() {
return connected;
}
/**
* Returns true if currently authenticated by successfully calling the login method.
*
* @return true if authenticated.
*/
public boolean isAuthenticated() {
return authenticated;
}
/**
* Closes the connection by setting presence to unavailable then closing the stream to
* the XMPP server. Once a connection has been closed, it cannot be re-opened.
*/
public void close() {
// Set presence to offline.
packetWriter.sendPacket(new Presence(Presence.Type.UNAVAILABLE));
packetWriter.shutdown();
packetReader.shutdown();
// Wait 100 ms for processes to clean-up, then shutdown.
try {
Thread.sleep(100);
}
catch (Exception e) { }
try {
socket.close();
}
catch (Exception e) { }
authenticated = false;
connected = false;
}
/**
* Sends the specified packet to the server.
*
* @param packet the packet to send.
*/
public void sendPacket(Packet packet) {
if (!isConnected()) {
throw new IllegalStateException("Not connected to server.");
}
packetWriter.sendPacket(packet);
}
/**
* Registers a packet listener with this connection. A packet filter determines
* which packets will be delivered to the listener.
*
* @param packetListener the packet listener to notify of new packets.
* @param packetFilter the packet filter to use.
*/
public void addPacketListener(PacketListener packetListener, PacketFilter packetFilter) {
if (!isConnected()) {
throw new IllegalStateException("Not connected to server.");
}
packetReader.addPacketListener(packetListener, packetFilter);
}
/**
* Removes a packet listener from this connection.
*
* @param packetListener the packet listener to remove.
*/
public void removePacketListener(PacketListener packetListener) {
packetReader.removePacketListener(packetListener);
}
/**
* Creates a new packet collector for this connection. A packet filter determines
* which packets will be accumulated by the collector.
*
* @param packetFilter the packet filter to use.
* @return a new packet collector.
*/
public PacketCollector createPacketCollector(PacketFilter packetFilter) {
return packetReader.createPacketCollector(packetFilter);
}
/**
* Initializes the connection by creating a packet reader and writer and opening a
* XMPP stream to the server.
*
* @throws XMPPException if establishing a connection to the server fails.
*/
void init() throws XMPPException {
try {
reader = new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF-8"));
writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF-8"));
}
catch (IOException ioe) {
throw new XMPPException("XMPPError establishing connection with server.", ioe);
}
// If debugging is enabled, we open a window and write out all network traffic.
// The method that creates the debug GUI returns PacketListener that we must add
// after the packet reader and writer are created.
PacketListener debugListener = null;
if (DEBUG_ENABLED) {
debugListener = createDebug();
}
packetWriter = new PacketWriter(this);
packetReader = new PacketReader(this);
// If debugging is enabled, we should start the thread that will listen for
// all packets and then log them.
if (DEBUG_ENABLED) {
packetReader.addPacketListener(debugListener, null);
}
// Start the packet writer. This will open a XMPP stream to the server
packetWriter.startup();
// Start the packet reader. The startup() method will block until we
// get an opening stream packet back from server.
packetReader.startup();
// Make note of the fact that we're now connected.
connected = true;
}
/**
* Creates the debug process, which is a GUI window that displays XML traffic.
* This method must be called before the packet reader and writer are created because
* it wraps the reader and writer objects with special logging implementations.
* The method returns a PacketListner that must be added after the packet reader is
* created.
*
* @return a PacketListener used by the debugging process that must be added after the packet
* reader is created.
*/
private PacketListener createDebug() {
// Use the native look and feel.
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}
catch (Exception e) {
e.printStackTrace();
}
debugFrame = new JFrame("Smack Debug Window -- " + getHost() + ":" + getPort());
// We'll arrange the UI into four tabs. The first tab contains all data, the second
// client generated XML, the third server generated XML, and the fourth is packet
// data from the server as seen by Smack.
JTabbedPane tabbedPane = new JTabbedPane();
JPanel allPane = new JPanel();
allPane.setLayout(new GridLayout(3, 1));
tabbedPane.add("All", allPane);
// Create UI elements for client generated XML traffic.
final JTextArea sentText1 = new JTextArea();
final JTextArea sentText2 = new JTextArea();
sentText1.setEditable(false);
sentText2.setEditable(false);
sentText1.setForeground(new Color(112, 3, 3));
sentText2.setForeground(new Color(112, 3, 3));
allPane.add(new JScrollPane(sentText1));
tabbedPane.add("Client", new JScrollPane(sentText2));
// Create UI elements for server generated XML traffic.
final JTextArea receivedText1 = new JTextArea();
final JTextArea receivedText2 = new JTextArea();
receivedText1.setEditable(false);
receivedText2.setEditable(false);
receivedText1.setForeground(new Color(6, 76, 133));
receivedText2.setForeground(new Color(6, 76, 133));
allPane.add(new JScrollPane(receivedText1));
tabbedPane.add("Server", new JScrollPane(receivedText2));
// Create UI elements for interpreted XML traffic.
final JTextArea interpretedText1 = new JTextArea();
final JTextArea interpretedText2 = new JTextArea();
interpretedText1.setEditable(false);
interpretedText2.setEditable(false);
interpretedText1.setForeground(new Color(1, 94, 35));
interpretedText2.setForeground(new Color(1, 94, 35));
allPane.add(new JScrollPane(interpretedText1));
tabbedPane.add("Interpreted Packets", new JScrollPane(interpretedText2));
debugFrame.getContentPane().add(tabbedPane);
debugFrame.setSize(550, 400);
debugFrame.setVisible(true);
// Create a special Reader that wraps the main Reader and logs data to the GUI.
Reader debugReader = new Reader() {
Reader myReader = reader;
public int read(char cbuf[], int off, int len) throws IOException {
int count = myReader.read(cbuf, off, len);
if (count > 0) {
String str = new String(cbuf, off, count);
int index = str.lastIndexOf(">");
if (index != -1) {
receivedText1.append(str.substring(0, index+1));
receivedText2.append(str.substring(0, index+1));
receivedText1.append(NEWLINE);
receivedText2.append(NEWLINE);
if (str.length() > index) {
receivedText1.append(str.substring(index+1));
receivedText2.append(str.substring(index+1));
}
}
else {
receivedText1.append(str);
receivedText2.append(str);
}
}
return count;
}
public void close() throws IOException {
myReader.close();
}
public int read() throws IOException {
return myReader.read();
}
public int read(char cbuf[]) throws IOException {
return myReader.read(cbuf);
}
public long skip(long n) throws IOException {
return myReader.skip(n);
}
public boolean ready() throws IOException {
return myReader.ready();
}
public boolean markSupported() {
return myReader.markSupported();
}
public void mark(int readAheadLimit) throws IOException {
myReader.mark(readAheadLimit);
}
public void reset() throws IOException {
myReader.reset();
}
};
// Create a special Writer that wraps the main Writer and logs data to the GUI.
Writer debugWriter = new Writer() {
Writer myWriter = writer;
public void write(char cbuf[], int off, int len) throws IOException {
myWriter.write(cbuf, off, len);
String str = new String(cbuf, off, len);
sentText1.append(str);
sentText2.append(str);
if (str.endsWith(">")) {
sentText1.append(NEWLINE);
sentText2.append(NEWLINE);
}
}
public void flush() throws IOException {
myWriter.flush();
}
public void close() throws IOException {
myWriter.close();
}
public void write(int c) throws IOException {
myWriter.write(c);
}
public void write(char cbuf[]) throws IOException {
myWriter.write(cbuf);
String str = new String(cbuf);
sentText1.append(str);
sentText2.append(str);
if (str.endsWith(">")) {
sentText1.append(NEWLINE);
sentText2.append(NEWLINE);
}
}
public void write(String str) throws IOException {
myWriter.write(str);
sentText1.append(str);
sentText2.append(str);
if (str.endsWith(">")) {
sentText1.append(NEWLINE);
sentText2.append(NEWLINE);
}
}
public void write(String str, int off, int len) throws IOException {
myWriter.write(str, off, len);
str = str.substring(off, off + len);
sentText1.append(str);
sentText2.append(str);
if (str.endsWith(">")) {
sentText1.append(NEWLINE);
sentText2.append(NEWLINE);
}
}
};
// Assign the reader/writer objects to use the debug versions. The packet reader
// and writer will use the debug versions when they are created.
reader = debugReader;
writer = debugWriter;
// Create a thread that will listen for all incoming packets and write them to
// the GUI. This is what we call "interpreted" packet data, since it's the packet
// data as Smack sees it and not as it's coming in as raw XML.
PacketListener debugListener = new PacketListener() {
public void processPacket(Packet packet) {
interpretedText1.append(packet.toXML());
interpretedText2.append(packet.toXML());
interpretedText1.append(NEWLINE);
interpretedText2.append(NEWLINE);
}
};
return debugListener;
}
}