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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 2013 Red Hat, Inc. and/or its affiliates.
 *
 * 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.xnio.sasl;

import java.io.IOException;
import java.nio.ByteBuffer;
import org.xnio.Buffers;
import org.xnio.conduits.AbstractMessageSinkConduit;
import org.xnio.conduits.Conduits;
import org.xnio.conduits.MessageSinkConduit;

/**
 * @author David M. Lloyd
 */
public final class SaslUnwrappingConduit extends AbstractMessageSinkConduit implements MessageSinkConduit {
    private final SaslWrapper wrapper;
    private ByteBuffer buffer;

    public SaslUnwrappingConduit(final MessageSinkConduit next, final SaslWrapper wrapper) {
        super(next);
        this.wrapper = wrapper;
    }

    public boolean send(final ByteBuffer src) throws IOException {
        if (! doSend()) {
            return false;
        }
        ByteBuffer wrapped = ByteBuffer.wrap(wrapper.unwrap(src));
        if (! next.send(wrapped)) {
            buffer = wrapped;
        }
        return true;
    }

    public boolean send(final ByteBuffer[] srcs, final int offs, final int len) throws IOException {
        if (! doSend()) {
            return false;
        }
        final byte[] bytes = Buffers.take(srcs, offs, len);
        final ByteBuffer wrapped = ByteBuffer.wrap(wrapper.unwrap(bytes));
        if (! next.send(wrapped)) {
            this.buffer = wrapped;
        }
        return true;
    }

    @Override
    public boolean sendFinal(ByteBuffer src) throws IOException {
        return Conduits.sendFinalBasic(this, src);
    }

    @Override
    public boolean sendFinal(ByteBuffer[] srcs, int offs, int len) throws IOException {
        return Conduits.sendFinalBasic(this, srcs, offs, len);
    }

    private boolean doSend() throws IOException {
        final ByteBuffer buffer = this.buffer;
        if (buffer != null && next.send(buffer)) {
            this.buffer = null;
            return true;
        }
        return false;
    }

    public boolean flush() throws IOException {
        return doSend() && next.flush();
    }
}