org.wildfly.security.sasl.anonymous.AnonymousSaslClient 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.anonymous;
import static org.wildfly.security.mechanism._private.ElytronMessages.saslAnonymous;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.sasl.SaslException;
import org.wildfly.common.Assert;
import org.wildfly.common.bytes.ByteStringBuilder;
import org.wildfly.security.auth.principal.AnonymousPrincipal;
import org.wildfly.security.sasl.WildFlySasl;
import org.wildfly.security.sasl.util.AbstractSaslClient;
import org.wildfly.security.sasl.util.SaslMechanismInformation;
import org.wildfly.security.sasl.util.StringPrep;
/**
* A client implementation of the RFC 4505 {@code ANONYMOUS} mechanism.
*
* @author David M. Lloyd
*/
public final class AnonymousSaslClient extends AbstractSaslClient {
private static final int INITIAL_STATE = 1;
/**
* Construct a new instance.
*
* @param protocol the protocol
* @param serverName the server name
* @param callbackHandler the callback handler to use for authentication
* @param authorizationId the possibly {@code null} protocol-dependent name used for authorization
*/
AnonymousSaslClient(final String protocol, final String serverName, final CallbackHandler callbackHandler, final String authorizationId) {
super(SaslMechanismInformation.Names.ANONYMOUS, protocol, serverName, callbackHandler, authorizationId, true, saslAnonymous);
setNegotiationState(INITIAL_STATE);
}
@Override
protected byte[] evaluateMessage(int state, final byte[] message) throws SaslException {
switch (state) {
case INITIAL_STATE:
if (message != null && message.length > 0) {
throw saslAnonymous.mechInvalidServerMessage().toSaslException();
}
NameCallback nameCallback = new NameCallback("Authentication name", "anonymous");
handleCallbacks(nameCallback);
String name = nameCallback.getName();
if (name == null) {
throw saslAnonymous.mechNotProvidedUserName().toSaslException();
}
if (name.length() > 255) {
throw saslAnonymous.mechAuthenticationNameTooLong().toSaslException();
}
if (name.isEmpty()) {
throw saslAnonymous.mechAuthenticationNameIsEmpty().toSaslException();
}
ByteStringBuilder b = new ByteStringBuilder();
StringPrep.encode(name, b, 0
| StringPrep.MAP_TO_NOTHING
| StringPrep.MAP_TO_SPACE
| StringPrep.FORBID_ASCII_CONTROL
| StringPrep.FORBID_NON_ASCII_CONTROL
| StringPrep.FORBID_PRIVATE_USE
| StringPrep.FORBID_NON_CHARACTER
| StringPrep.FORBID_SURROGATE
| StringPrep.FORBID_INAPPROPRIATE_FOR_PLAIN_TEXT
| StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED
| StringPrep.FORBID_TAGGING
| StringPrep.NORMALIZE_KC
);
negotiationComplete();
return b.toArray();
}
throw Assert.impossibleSwitchCase(state);
}
public Object getNegotiatedProperty(final String propName) {
assertComplete();
// Our principal is always anonymous, even if an authz name was requested.
return WildFlySasl.PRINCIPAL.equals(propName) ? AnonymousPrincipal.getInstance() : super.getNegotiatedProperty(propName);
}
}