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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 2015 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.util;

import static org.wildfly.security.sasl._private.ElytronMessages.sasl;

import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;

import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.sasl.SaslException;
import javax.security.sasl.SaslServer;
import javax.security.sasl.SaslServerFactory;

import org.wildfly.security.auth.callback.SecurityIdentityCallback;
import org.wildfly.security.auth.server.SecurityIdentity;
import org.wildfly.security.sasl.WildFlySasl;

/**
 * A SASL server factory which makes the authenticated {@link SecurityIdentity} available to the caller.
 *
 * @author David M. Lloyd
 */
public final class SecurityIdentitySaslServerFactory extends AbstractDelegatingSaslServerFactory {

    /**
     * Construct a new instance.
     *
     * @param delegate the delegate SASL server factory
     */
    public SecurityIdentitySaslServerFactory(final SaslServerFactory delegate) {
        super(delegate);
    }

    public SaslServer createSaslServer(final String mechanism, final String protocol, final String serverName, final Map props, final CallbackHandler cbh) throws SaslException {
        final SaslServer delegateSaslServer = delegate.createSaslServer(mechanism, protocol, serverName, props, cbh);
        return delegateSaslServer == null ? null : new AbstractDelegatingSaslServer(delegateSaslServer) {
            private final AtomicBoolean complete = new AtomicBoolean();
            private volatile SecurityIdentity securityIdentity;

            public byte[] evaluateResponse(final byte[] response) throws SaslException {
                final byte[] challenge = delegate.evaluateResponse(response);
                if (isComplete() && complete.compareAndSet(false, true)) try {
                    final SecurityIdentityCallback ric = new SecurityIdentityCallback();
                    cbh.handle(new Callback[] { ric });
                    securityIdentity = ric.getSecurityIdentity();
                } catch (Throwable ignored) {
                }
                return challenge;
            }

            public Object getNegotiatedProperty(final String propName) {
                if (! isComplete()) {
                    throw sasl.mechAuthenticationNotComplete();
                }
                return propName.equals(WildFlySasl.SECURITY_IDENTITY) ? securityIdentity : super.getNegotiatedProperty(propName);
            }

            public void dispose() throws SaslException {
                try {
                    super.dispose();
                } finally {
                    securityIdentity = null;
                }
            }
        };
    }
}