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Code Issues Releases Wiki Activity

1. Added support for TLS. SMACK-76

Browse source 
2. Added support for SASL. SMACK-24
3. Modified constructors to include serviceName. SMACK-75

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2733 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Gaston Dombiak 2005-08-27 02:33:08 +00:00 committed by gato
parent ad6be5887c
commit c914101965
1 changed files with 259 additions and 161 deletions
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360
source/org/jivesoftware/smack/XMPPConnection.java
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@ -20,15 +20,21 @@
package org.jivesoftware.smack;
import org.jivesoftware.smack.debugger.SmackDebugger;
import org.jivesoftware.smack.filter.PacketFilter;
import org.jivesoftware.smack.filter.PacketIDFilter;
import org.jivesoftware.smack.packet.*;
import org.jivesoftware.smack.debugger.*;
import org.jivesoftware.smack.filter.*;
import org.jivesoftware.smack.util.StringUtils;
import javax.net.SocketFactory;
import java.lang.reflect.Constructor;
import java.net.*;
import java.util.*;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import java.io.*;
import java.lang.reflect.Constructor;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
/**
* Creates a connection to a XMPP server. A simple use of this API might
@ -77,42 +83,56 @@ public class XMPPConnection {
}
private SmackDebugger debugger = null;
/**
* IP address or host name of the server. This information is only used when
* creating new socket connections to the server. If this information is not
* configured then it will be assumed that the host name matches the service name.
*/
String host;
int port;
Socket socket;
/**
* Hostname of the XMPP server. Usually servers use the same service name as the name
* of the server. However, there are some servers like google where host would be
* talk.google.com and the serviceName would be gmail.com.
*/
String serviceName;
String connectionID;
private String user = null;
private boolean connected = false;
private boolean authenticated = false;
private boolean anonymous = false;
private boolean usingTLS = false;
PacketWriter packetWriter;
PacketReader packetReader;
Roster roster = null;
private AccountManager accountManager = null;
private SASLAuthentication saslAuthentication = new SASLAuthentication(this);
Writer writer;
Reader reader;
/**
* Creates a new connection to the specified XMPP server. The default port of 5222 will
* be used.
* be used. The IP address of the server is assumed to match the service name.
*
* @param host the name of the XMPP server to connect to; e.g. <tt>jivesoftware.com</tt>.
* @param serviceName the name of the XMPP server to connect to; e.g. <tt>jivesoftware.com</tt>.
* @throws XMPPException if an error occurs while trying to establish the connection.
* Two possible errors can occur which will be wrapped by an XMPPException --
* UnknownHostException (XMPP error code 504), and IOException (XMPP error code
* 502). The error codes and wrapped exceptions can be used to present more
* appropiate error messages to end-users.
*/
public XMPPConnection(String host) throws XMPPException {
this(host, 5222);
public XMPPConnection(String serviceName) throws XMPPException {
this(serviceName, 5222, serviceName);
}
/**
* Creates a new connection to the specified XMPP server on the given port.
* Creates a new connection to the specified XMPP server on the given port. The IP address
* of the server is assumed to match the service name.
*
* @param host the name of the XMPP server to connect to; e.g. <tt>jivesoftware.com</tt>.
* @param port the port on the server that should be used; e.g. <tt>5222</tt>.
@ -123,6 +143,22 @@ public class XMPPConnection {
* appropiate error messages to end-users.
*/
public XMPPConnection(String host, int port) throws XMPPException {
this(host, port, host);
}
/**
* Creates a new connection to the specified XMPP server on the given host and port.
*
* @param host the host name, or null for the loopback address.
* @param port the port on the server that should be used; e.g. <tt>5222</tt>.
* @param serviceName the name of the XMPP server to connect to; e.g. <tt>jivesoftware.com</tt>.
* @throws XMPPException if an error occurs while trying to establish the connection.
* Two possible errors can occur which will be wrapped by an XMPPException --
* UnknownHostException (XMPP error code 504), and IOException (XMPP error code
* 502). The error codes and wrapped exceptions can be used to present more
* appropiate error messages to end-users.
*/
public XMPPConnection(String host, int port, String serviceName) throws XMPPException {
this.host = host;
this.port = port;
try {
@ -140,6 +176,7 @@ public class XMPPConnection {
new XMPPError(502),
ioe);
}
this.serviceName = serviceName;
init();
}
@ -151,16 +188,19 @@ public class XMPPConnection {
* XMPP server. A typical use for a custom SocketFactory is when connecting through a
* SOCKS proxy.
*
* @param host the name of the XMPP server to connect to; e.g. <tt>jivesoftware.com</tt>.
* @param host the host name, or null for the loopback address.
* @param port the port on the server that should be used; e.g. <tt>5222</tt>.
* @param socketFactory a SocketFactory that will be used to create the socket to the XMPP server.
* @param serviceName the name of the XMPP server to connect to; e.g. <tt>jivesoftware.com</tt>.
* @param socketFactory a SocketFactory that will be used to create the socket to the XMPP
* server.
* @throws XMPPException if an error occurs while trying to establish the connection.
* Two possible errors can occur which will be wrapped by an XMPPException --
* UnknownHostException (XMPP error code 504), and IOException (XMPP error code
* 502). The error codes and wrapped exceptions can be used to present more
* appropiate error messages to end-users.
*/
public XMPPConnection(String host, int port, SocketFactory socketFactory) throws XMPPException {
public XMPPConnection(String host, int port, String serviceName, SocketFactory socketFactory)
throws XMPPException {
this.host = host;
this.port = port;
try {
@ -178,6 +218,7 @@ public class XMPPConnection {
new XMPPError(502),
ioe);
}
this.serviceName = serviceName;
init();
}
@ -187,7 +228,6 @@ public class XMPPConnection {
* one of the other constructors.
*/
XMPPConnection() {
}
/**
@ -202,9 +242,20 @@ public class XMPPConnection {
}
/**
* Returns the host name of the XMPP server for this connection.
* Returns the name of the service provided by the XMPP server for this connection. After
* authenticating with the server the returned value may be different.
*
* @return the host name of the XMPP server.
* @return the name of the service provided by the XMPP server.
*/
public String getServiceName() {
return serviceName;
}
/**
* Returns the host name of the server where the XMPP server is running. This would be the
* IP address of the server or a name that may be resolved by a DNS server.
*
* @return the host name of the server where the XMPP server is running.
*/
public String getHost() {
return host;
@ -294,69 +345,29 @@ public class XMPPConnection {
}
// Do partial version of nameprep on the username.
username = username.toLowerCase().trim();
// 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 a certain number of seconds for a response from the server.
IQ response = (IQ) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
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);
String response = null;
if (usingTLS) {
// Authenticate using SASL
response = saslAuthentication.authenticate(username, password, resource);
}
else {
throw new XMPPException("Server does not support compatible authentication mechanism.");
// Authenticate using Non-SASL
response = new NonSASLAuthentication(this).authenticate(username, password, resource);
}
auth.setResource(resource);
collector = packetReader.createPacketCollector(new PacketIDFilter(auth.getPacketID()));
// Send the packet.
packetWriter.sendPacket(auth);
// Wait up to a certain number of seconds for a response from the server.
response = (IQ) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
if (response == null) {
throw new XMPPException("Authentication failed.");
}
else if (response.getType() == IQ.Type.ERROR) {
throw new XMPPException(response.getError());
}
// Set the user.
if (response.getTo() != null) {
this.user = response.getTo();
if (response != null) {
this.user = response;
// Update the serviceName with the one returned by the server
this.serviceName = StringUtils.parseServer(response);
}
else {
this.user = username + "@" + this.host;
this.user = username + "@" + this.serviceName;
if (resource != null) {
this.user += "/" + resource;
}
}
// We're done with the collector, so explicitly cancel it.
collector.cancel();
// Create the roster.
this.roster = new Roster(this);
@ -383,8 +394,8 @@ public class XMPPConnection {
/**
* Logs in to the server anonymously. Very few servers are configured to support anonymous
* authentication, so it's fairly likely logging in anonymously will fail. If anonymous login
* does succeed, your XMPP address will likely be in the form "server/123ABC" (where "123ABC" is a
* random value generated by the server).
* does succeed, your XMPP address will likely be in the form "server/123ABC" (where "123ABC"
* is a random value generated by the server).
*
* @throws XMPPException if an error occurs or anonymous logins are not supported by the server.
* @throws IllegalStateException if not connected to the server, or already logged in
@ -418,7 +429,7 @@ public class XMPPConnection {
this.user = response.getTo();
}
else {
this.user = this.host + "/" + ((Authentication) response).getResource();
this.user = this.serviceName + "/" + ((Authentication) response).getResource();
}
// We're done with the collector, so explicitly cancel it.
collector.cancel();
@ -732,67 +743,8 @@ public class XMPPConnection {
* @throws XMPPException if establishing a connection to the server fails.
*/
private 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.",
new XMPPError(502),
ioe);
}
// If debugging is enabled, we open a window and write out all network traffic.
if (DEBUG_ENABLED) {
// Detect the debugger class to use.
String className = null;
// Use try block since we may not have permission to get a system
// property (for example, when an applet).
try {
className = System.getProperty("smack.debuggerClass");
}
catch (Throwable t) {
}
Class debuggerClass = null;
if (className != null) {
try {
debuggerClass = Class.forName(className);
}
catch (Exception e) {
e.printStackTrace();
}
}
if (debuggerClass == null) {
try {
debuggerClass =
Class.forName("org.jivesoftware.smackx.debugger.EnhancedDebugger");
}
catch (Exception ex) {
try {
debuggerClass = Class.forName("org.jivesoftware.smack.debugger.LiteDebugger");
}
catch (Exception ex2) {
ex2.printStackTrace();
}
}
}
// Create a new debugger instance. If an exception occurs then disable the debugging
// option
try {
Constructor constructor =
debuggerClass.getConstructor(
new Class[] { XMPPConnection.class, Writer.class, Reader.class });
debugger =
(SmackDebugger) constructor.newInstance(new Object[] { this, writer, reader });
reader = debugger.getReader();
writer = debugger.getWriter();
}
catch (Exception e) {
e.printStackTrace();
DEBUG_ENABLED = false;
}
}
// Set the reader and writer instance variables
initReaderAndWriter();
try
{
@ -851,6 +803,77 @@ public class XMPPConnection {
}
}
private void initReaderAndWriter() 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.",
new XMPPError(502),
ioe);
}
// If debugging is enabled, we open a window and write out all network traffic.
if (DEBUG_ENABLED) {
if (debugger == null) {
// Detect the debugger class to use.
String className = null;
// Use try block since we may not have permission to get a system
// property (for example, when an applet).
try {
className = System.getProperty("smack.debuggerClass");
}
catch (Throwable t) {
}
Class debuggerClass = null;
if (className != null) {
try {
debuggerClass = Class.forName(className);
}
catch (Exception e) {
e.printStackTrace();
}
}
if (debuggerClass == null) {
try {
debuggerClass =
Class.forName("org.jivesoftware.smackx.debugger.EnhancedDebugger");
}
catch (Exception ex) {
try {
debuggerClass = Class.forName("org.jivesoftware.smack.debugger.LiteDebugger");
}
catch (Exception ex2) {
ex2.printStackTrace();
}
}
}
// Create a new debugger instance. If an exception occurs then disable the debugging
// option
try {
Constructor constructor =
debuggerClass.getConstructor(
new Class[] { XMPPConnection.class, Writer.class, Reader.class });
debugger = (SmackDebugger) constructor
.newInstance(new Object[]{this, writer, reader});
reader = debugger.getReader();
writer = debugger.getWriter();
}
catch (Exception e) {
e.printStackTrace();
DEBUG_ENABLED = false;
}
}
else {
// Obtain new reader and writer from the existing debugger
reader = debugger.newConnectionReader(reader);
writer = debugger.newConnectionWriter(writer);
}
}
}
/**
* Fires listeners on connection established events.
*/
@ -864,4 +887,79 @@ public class XMPPConnection {
listeners[i].connectionEstablished(connection);
}
}
/***********************************************
* TLS code below
**********************************************/
/**
* Returns true if the connection to the server has successfully negotiated TLS. Once TLS
* has been negotiatied the connection has been secured.
*
* @return true if the connection to the server has successfully negotiated TLS.
*/
public boolean isUsingTLS() {
return usingTLS;
}
/**
* Returns the SASLAuthentication manager that is responsible for authenticating with
* the server.
*
* @return the SASLAuthentication manager that is responsible for authenticating with
* the server.
*/
public SASLAuthentication getSASLAuthentication() {
return saslAuthentication;
}
/**
* Notification message saying that the server supports TLS so confirm the server that we
* want to secure the connection.
*/
void startTLSReceived() {
try {
writer.write("<starttls xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\"/>");
writer.flush();
} catch (IOException e) {
packetReader.notifyConnectionError(e);
}
}
/**
* The server has indicated that TLS negotiation can start. We now need to secure the
* existing plain connection and perform a handshake. This method won't return until the
* connection has finished the handshake or an error occured while securing the connection.
*/
void proceedTLSReceived() {
try {
SSLContext context = SSLContext.getInstance("TLS");
// Accept any certificate presented by the server
context.init(null, // KeyManager not required
new javax.net.ssl.TrustManager[] { new OpenTrustManager() },
new java.security.SecureRandom());
Socket plain = socket;
// Secure the plain connection
socket = context.getSocketFactory().createSocket(plain,
plain.getInetAddress().getHostName(), plain.getPort(), true);
socket.setSoTimeout(0);
socket.setKeepAlive(true);
// Initialize the reader and writer with the new secured version
initReaderAndWriter();
// Proceed to do the handshake
((SSLSocket)socket).startHandshake();
// Set that TLS was successful
usingTLS = true;
// Set the new writer to use
packetWriter.setWriter(writer);
// Send a new opening stream to the server
packetWriter.openStream();
}
catch (Exception e) {
packetReader.notifyConnectionError(e);
}
}
}