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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging 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 io.undertow.protocols.ssl;

import javax.net.ssl.SSLEngine;
import java.io.ByteArrayOutputStream;

/**
 * Super hacky class that allows the client and server hello message to be modified and the corresponding hash generated
 * at runtime.
 *
 *
 * @author Stuart Douglas
 */
class ALPNHackClientByteArrayOutputStream extends ByteArrayOutputStream {

    private final SSLEngine sslEngine;
    private boolean ready = true;
    /**
     * the server hello that was sent over the wire, before we messed with it
     */
    private byte[] receivedServerHello;
    private byte[] sentClientHello;

    ALPNHackClientByteArrayOutputStream(SSLEngine sslEngine) {
        this.sslEngine = sslEngine;
    }

    @Override
    public void write(byte[] b, int off, int len) {
        if(ready) {
            if(b[off] == 2) { // server hello
                ready = false; //we are done processing
                byte[] newData;
                if(receivedServerHello != null) {
                    int b1 = b[off + 1];
                    int b2 = b[off + 2];
                    int b3 = b[off + 3];
                    int length = (b1 & 0xFF) << 16 | (b2 & 0xFF) << 8 | b3 & 0xFF;
                    if(length + 4 == len) {
                        newData = receivedServerHello;
                    } else {
                        newData = new byte[receivedServerHello.length + len - 4 - length];
                        System.arraycopy(receivedServerHello, 0, newData, 0, receivedServerHello.length);
                        System.arraycopy(b, length + 4, newData, receivedServerHello.length, len - 4 -length);
                    }
                } else {
                    newData = new byte[len];
                    System.arraycopy(b, off, newData, 0, len);
                }
                ALPNHackSSLEngine.regenerateHashes(sslEngine, this, sentClientHello, newData);
                return;
            }
        }
        super.write(b, off, len);
    }

    byte[] getSentClientHello() {
        return sentClientHello;
    }

    void setSentClientHello(byte[] sentClientHello) {
        this.sentClientHello = sentClientHello;
    }

    byte[] getReceivedServerHello() {
        return receivedServerHello;
    }

    void setReceivedServerHello(byte[] receivedServerHello) {
        this.receivedServerHello = receivedServerHello;
    }
}