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Code Issues Releases Wiki Activity

1. Added anonymous authentication. SMACK-84

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2. Fixed possible delay waiting for server reply. SMACK-85

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2783 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Gaston Dombiak 2005-09-05 22:00:16 +00:00 committed by gato
parent 6d6fdcf9b6
commit b94d041bba
1 changed files with 135 additions and 1 deletions
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136
source/org/jivesoftware/smack/SASLAuthentication.java
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@ -24,6 +24,7 @@ import org.jivesoftware.smack.filter.PacketIDFilter;
import org.jivesoftware.smack.packet.Bind;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.packet.Session;
import org.jivesoftware.smack.sasl.SASLAnonymous;
import org.jivesoftware.smack.sasl.SASLMechanism;
import org.jivesoftware.smack.sasl.SASLPlainMechanism;
@ -68,6 +69,7 @@ public class SASLAuthentication implements UserAuthentication {
* Boolean indicating if SASL negotiation has finished and was successful.
*/
private boolean saslNegotiated = false;
private boolean resourceBinded = false;
private boolean sessionSupported = false;
static {
@ -121,6 +123,45 @@ public class SASLAuthentication implements UserAuthentication {
this.connection = connection;
}
/**
* Returns true if the server offered ANONYMOUS SASL as a way to authenticate users.
*
* @return true if the server offered ANONYMOUS SASL as a way to authenticate users.
*/
public boolean hasAnonymousAuthentication() {
return serverMechanisms.contains("ANONYMOUS");
}
/**
* Returns true if the server offered SASL authentication besides ANONYMOUS SASL.
*
* @return true if the server offered SASL authentication besides ANONYMOUS SASL.
*/
public boolean hasNonAnonymousAuthentication() {
if (!serverMechanisms.isEmpty()) {
// Check that anonymous sasl is not the only supported mechanism
if (serverMechanisms.size() == 1) {
return !hasAnonymousAuthentication();
}
return true;
}
return false;
}
/**
* Performs SASL authentication of the specified user. If SASL authentication was successful
* then resource binding and session establishment will be performed. This method will return
* the full JID provided by the server while binding a resource to the connection.<p>
*
* The server may assign a full JID with a username or resource different than the requested
* by this method.
*
* @param username the username that is authenticating with the server.
* @param password the password to send to the server.
* @param resource the desired resource.
* @return the full JID provided by the server while binding a resource to the connection.
* @throws XMPPException if an error occures while authenticating.
*/
public String authenticate(String username, String password, String resource)
throws XMPPException {
// Locate the SASLMechanism to use
@ -221,6 +262,98 @@ public class SASLAuthentication implements UserAuthentication {
}
}
/**
* Performs ANONYMOUS SASL authentication. If SASL authentication was successful
* then resource binding and session establishment will be performed. This method will return
* the full JID provided by the server while binding a resource to the connection.<p>
*
* The server will assign a full JID with a randomly generated resource and possibly with
* no username.
*
* @return the full JID provided by the server while binding a resource to the connection.
* @throws XMPPException if an error occures while authenticating.
*/
public String authenticateAnonymously() throws XMPPException {
try {
currentMechanism = new SASLAnonymous(this);
currentMechanism.authenticate(null, null, null);
// Wait until SASL negotiation finishes
synchronized (this) {
if (!saslNegotiated) {
try {
wait(5000);
} catch (InterruptedException e) {
}
}
}
if (saslNegotiated) {
// Bind a resource for this connection and
return bindResourceAndEstablishSession(null);
}
else {
return new NonSASLAuthentication(connection).authenticateAnonymously();
}
} catch (IOException e) {
return new NonSASLAuthentication(connection).authenticateAnonymously();
}
}
private String bindResourceAndEstablishSession(String resource) throws IOException,
XMPPException {
// We now need to bind a resource for the connection
// Open a new stream and wait for the response
connection.packetWriter.openStream();
// Wait until server sends response containing the <bind> element
synchronized (this) {
if (!resourceBinded) {
try {
wait(30000);
} catch (InterruptedException e) {
}
}
}
Bind bindResource = new Bind();
bindResource.setResource(resource);
PacketCollector collector = connection
.createPacketCollector(new PacketIDFilter(bindResource.getPacketID()));
// Send the packet
connection.sendPacket(bindResource);
// Wait up to a certain number of seconds for a response from the server.
Bind response = (Bind) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
collector.cancel();
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());
}
String userJID = response.getJid();
if (sessionSupported) {
Session session = new Session();
collector = connection.createPacketCollector(new PacketIDFilter(session.getPacketID()));
// Send the packet
connection.sendPacket(session);
// Wait up to a certain number of seconds for a response from the server.
IQ ack = (IQ) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());
collector.cancel();
if (ack == null) {
throw new XMPPException("No response from the server.");
}
// If the server replied with an error, throw an exception.
else if (ack.getType() == IQ.Type.ERROR) {
throw new XMPPException(ack.getError());
}
}
return userJID;
}
/**
* Sets the available SASL mechanism reported by the server. The server will report the
* available SASL mechanism once the TLS negotiation was successful. This information is
@ -251,8 +384,8 @@ public class SASLAuthentication implements UserAuthentication {
* would be to bind the resource.
*/
void authenticated() {
saslNegotiated = true;
synchronized (this) {
saslNegotiated = true;
// Wake up the thread that is waiting in the #authenticate method
notify();
}
@ -264,6 +397,7 @@ public class SASLAuthentication implements UserAuthentication {
*/
void bindingRequired() {
synchronized (this) {
resourceBinded = true;
// Wake up the thread that is waiting in the #authenticate method
notify();
}