org.wildfly.security.sasl.scram.ScramSaslClient Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.wildfly.security.sasl.scram;
import static org.wildfly.security.mechanism._private.ElytronMessages.saslScram;
import javax.security.auth.callback.CallbackHandler;
import javax.security.sasl.SaslException;
import org.wildfly.common.Assert;
import org.wildfly.security.mechanism.AuthenticationMechanismException;
import org.wildfly.security.mechanism.scram.ScramClient;
import org.wildfly.security.mechanism.scram.ScramFinalClientMessage;
import org.wildfly.security.mechanism.scram.ScramFinalServerMessage;
import org.wildfly.security.mechanism.scram.ScramInitialClientMessage;
import org.wildfly.security.mechanism.scram.ScramInitialServerMessage;
import org.wildfly.security.sasl.util.AbstractSaslClient;
/**
* @author David M. Lloyd
*/
final class ScramSaslClient extends AbstractSaslClient {
private static final int ST_NEW = 1;
private static final int ST_R1_SENT = 2;
private static final int ST_R2_SENT = 3;
private final ScramClient scramClient;
private ScramInitialClientMessage initialResponse;
private ScramFinalClientMessage finalResponse;
ScramSaslClient(final String mechanismName, final String protocol, final String serverName, final CallbackHandler callbackHandler, final String authorizationId, final ScramClient scramClient) {
super(mechanismName, protocol, serverName, callbackHandler, authorizationId, true, saslScram);
this.scramClient = scramClient;
setNegotiationState(ST_NEW);
}
public void dispose() throws SaslException {
initialResponse = null;
finalResponse = null;
setNegotiationState(FAILED_STATE);
}
protected byte[] evaluateMessage(final int state, final byte[] challenge) throws SaslException {
boolean ok = false;
try {
switch (state) {
case ST_NEW: {
// initial response
if (challenge.length != 0) throw saslScram.mechInitialChallengeMustBeEmpty().toSaslException();
this.initialResponse = scramClient.getInitialResponse();
setNegotiationState(ST_R1_SENT);
ok = true;
return initialResponse.getMessageBytes();
}
case ST_R1_SENT: {
final ScramInitialServerMessage initialChallenge = scramClient.parseInitialServerMessage(initialResponse, challenge);
this.finalResponse = scramClient.handleInitialChallenge(initialResponse, initialChallenge);
setNegotiationState(ST_R2_SENT);
ok = true;
return finalResponse.getMessageBytes();
}
case ST_R2_SENT: {
final ScramFinalServerMessage finalChallenge = scramClient.parseFinalServerMessage(challenge);
scramClient.verifyFinalChallenge(finalResponse, finalChallenge);
negotiationComplete();
ok = true;
return null;
}
}
throw Assert.impossibleSwitchCase(state);
} catch (AuthenticationMechanismException e) {
throw e.toSaslException();
} finally {
if (! ok) {
setNegotiationState(FAILED_STATE);
}
}
}
}