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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.ssl;

import static org.xnio._private.Messages.msg;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.concurrent.TimeUnit;

import org.xnio.Buffers;
import org.xnio.channels.StreamSinkChannel;
import org.xnio.conduits.AbstractStreamSourceConduit;
import org.xnio.conduits.ConduitReadableByteChannel;
import org.xnio.conduits.Conduits;
import org.xnio.conduits.StreamSourceConduit;

/**
 * Jsse SSL source conduit implementation based on {@link JsseSslConduitEngine}.
 * 
 * @author Flavia Rainone
 *
 */
final class JsseSslStreamSourceConduit extends AbstractStreamSourceConduit {

    private final JsseSslConduitEngine sslEngine;
    private volatile boolean tls;

    protected JsseSslStreamSourceConduit(StreamSourceConduit next, JsseSslConduitEngine sslEngine, boolean tls) {
        super(next);
        if (sslEngine == null) {
            throw msg.nullParameter("sslEngine");
        }
        this.sslEngine = sslEngine;
        this.tls = tls;
    }

    void enableTls() {
        tls = true;
        if (isReadResumed()) {
            wakeupReads();
        }
    }

    @Override
    public long transferTo(final long position, final long count, final FileChannel target) throws IOException {
        return target.transferFrom(new ConduitReadableByteChannel(this), position, count);
    }

    @Override
    public long transferTo(final long count, final ByteBuffer throughBuffer, final StreamSinkChannel target) throws IOException {
        return Conduits.transfer(this, count, throughBuffer, target);
    }

    @Override
    public int read(ByteBuffer dst) throws IOException {
        if (!tls) {
            return super.read(dst);
        }
        if ((!sslEngine.isDataAvailable() && sslEngine.isInboundClosed()) || sslEngine.isClosed()) {
            return -1;
        }
        final int readResult;
        final int unwrapResult;
        synchronized(sslEngine.getUnwrapLock()) {
            final ByteBuffer unwrapBuffer = sslEngine.getUnwrapBuffer().compact();
            try {
                readResult = super.read(unwrapBuffer);
            } finally {
                unwrapBuffer.flip();
            }
        }
        unwrapResult = sslEngine.unwrap(dst);
        if (unwrapResult == 0 && readResult == -1) {
            return -1;
        }
        return unwrapResult;
    }

    @Override
    public long read(ByteBuffer[] dsts, int offs, int len) throws IOException {
        if (!tls) {
            return super.read(dsts, offs, len);
        }
        if (offs < 0 || offs > len || len < 0 || offs + len > dsts.length) {
            throw new ArrayIndexOutOfBoundsException();
        }
        if ((!sslEngine.isDataAvailable() && sslEngine.isInboundClosed()) || sslEngine.isClosed()) {
            return -1;
        }
        final int readResult;
        final long unwrapResult;
        synchronized (sslEngine.getUnwrapLock()) {
            // retrieve buffer from sslEngine, to save some memory space
            final ByteBuffer unwrapBuffer = sslEngine.getUnwrapBuffer().compact();
            try {
                readResult = super.read(unwrapBuffer);
            } finally {
                unwrapBuffer.flip();
            }
        }
        unwrapResult = sslEngine.unwrap(dsts, offs, len);
        if (unwrapResult == 0 && readResult == -1) {
            return -1;
        }
        return unwrapResult;
    }

    @Override
    public void resumeReads() {
        if (tls && sslEngine.isFirstHandshake()) {
            super.wakeupReads();
        } else {
            super.resumeReads();
        }
    }

    @Override
    public void terminateReads() throws IOException {
        if (tls) {
            // do not close inbound, this will have the effect of closing outbound too sslEngine.closeInbound();
            super.suspendReads();
            return;
        }
        super.terminateReads();
    }

    @Override
    public void awaitReadable() throws IOException {
        if (tls) {
            sslEngine.awaitCanUnwrap();
        }
        if(sslEngine.isDataAvailable()) {
            return;
        }
        super.awaitReadable();
    }

    @Override
    public void awaitReadable(long time, TimeUnit timeUnit) throws IOException {
        if (!tls) {
            super.awaitReadable(time, timeUnit);
            return;
        }
        synchronized (sslEngine.getUnwrapLock()) {
            if(sslEngine.getUnwrapBuffer().hasRemaining()) {
                return;
            }
        }
        long duration = timeUnit.toNanos(time);
        long awaited = System.nanoTime();
        sslEngine.awaitCanUnwrap(time, timeUnit);
        awaited = System.nanoTime() - awaited;
        if (awaited > duration) {
            return;
        }
        super.awaitReadable(duration - awaited, TimeUnit.NANOSECONDS);
    }
}