org.wildfly.security.sasl.scram.ScramSaslServer 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).
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/*
* 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.auth.callback.ChannelBindingCallback;
import org.wildfly.security.mechanism.AuthenticationMechanismException;
import org.wildfly.security.mechanism.ScramServerException;
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.ScramInitialServerResult;
import org.wildfly.security.mechanism.scram.ScramServer;
import org.wildfly.security.sasl.util.AbstractSaslServer;
/**
* @author David M. Lloyd
* @author Jan Kalina
*/
final class ScramSaslServer extends AbstractSaslServer {
private static final int S_NO_MESSAGE = 1;
private static final int S_FIRST_MESSAGE = 2;
private static final int S_FINAL_MESSAGE = 3;
private final ScramServer scramServer;
private final ChannelBindingCallback bindingCallback;
private String authorizationId;
private ScramInitialServerResult initialServerResult;
private ScramInitialClientMessage initialClientMessage;
ScramSaslServer(final String mechanismName, final String protocol, final String serverName, final CallbackHandler callbackHandler, final ScramServer scramServer, final ChannelBindingCallback bindingCallback) {
super(mechanismName, protocol, serverName, callbackHandler, saslScram);
this.scramServer = scramServer;
this.bindingCallback = bindingCallback;
setNegotiationState(S_NO_MESSAGE);
}
public String getAuthorizationID() {
return authorizationId;
}
protected byte[] evaluateMessage(final int state, final byte[] response) throws SaslException {
boolean ok = false;
try {
switch (state) {
case S_NO_MESSAGE: {
if (response == null || response.length == 0) {
setNegotiationState(S_FIRST_MESSAGE);
// initial challenge
ok = true;
return NO_BYTES;
}
// fall through
}
case S_FIRST_MESSAGE: {
if (response == null || response.length == 0) {
throw saslScram.mechClientRefusesToInitiateAuthentication().toSaslException();
}
final ScramInitialClientMessage initialClientMessage = scramServer.parseInitialClientMessage(bindingCallback, response);
final ScramInitialServerResult initialServerResult = scramServer.evaluateInitialResponse(initialClientMessage);
this.initialClientMessage = initialClientMessage;
this.initialServerResult = initialServerResult;
final String authorizationId = initialClientMessage.getAuthorizationId();
this.authorizationId = authorizationId == null ? initialClientMessage.getAuthenticationName() : authorizationId;
setNegotiationState(S_FINAL_MESSAGE);
ok = true;
return initialServerResult.getScramInitialChallenge().getMessageBytes();
}
case S_FINAL_MESSAGE: {
final ScramFinalClientMessage finalClientMessage = scramServer.parseFinalClientMessage(initialClientMessage, initialServerResult, response);
final ScramFinalServerMessage finalServerMessage = scramServer.evaluateFinalClientMessage(initialServerResult, finalClientMessage);
negotiationComplete();
ok = true;
return finalServerMessage.getMessageBytes();
}
case COMPLETE_STATE: {
if (response != null && response.length != 0) {
throw saslScram.mechClientSentExtraMessage().toSaslException();
}
ok = true;
return null;
}
case FAILED_STATE: {
throw saslScram.mechAuthenticationFailed().toSaslException();
}
}
throw Assert.impossibleSwitchCase(state);
} catch (ScramServerException cause) {
ok = false;
setNegotiationState(FAILED_STATE);
if (saslScram.isDebugEnabled()) {
saslScram.debugf(cause, "[%s] error when evaluating message from client during state [%s]: %s", getMechanismName(), state, cause.getError().getText());
}
return cause.getError().getMessageBytes();
} catch (AuthenticationMechanismException e) {
throw e.toSaslException();
} finally {
if (! ok) {
setNegotiationState(FAILED_STATE);
}
}
}
public void dispose() throws SaslException {
initialServerResult = null;
initialClientMessage = null;
setNegotiationState(FAILED_STATE);
}
}