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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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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you 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:
 *
 *   https://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.netty.handler.codec.marshalling;

import static io.netty.util.internal.ObjectUtil.checkPositive;

import org.jboss.marshalling.ByteInput;

import java.io.IOException;

/**
 * {@link ByteInput} implementation which wraps another {@link ByteInput} and throws a {@link TooBigObjectException}
 * if the read limit was reached.
 */
class LimitingByteInput implements ByteInput {

    // Use a static instance here to remove the overhead of fillStacktrace
    private static final TooBigObjectException EXCEPTION = new TooBigObjectException();

    private final ByteInput input;
    private final long limit;
    private long read;

    LimitingByteInput(ByteInput input, long limit) {
        this.input = input;
        this.limit = checkPositive(limit, "limit");
    }

    @Override
    public void close() throws IOException {
        // Nothing to do
    }

    @Override
    public int available() throws IOException {
        return readable(input.available());
    }

    @Override
    public int read() throws IOException {
        int readable = readable(1);
        if (readable > 0) {
            int b = input.read();
            read++;
            return b;
        } else {
            throw EXCEPTION;
        }
    }

    @Override
    public int read(byte[] array) throws IOException {
        return read(array, 0, array.length);
    }

    @Override
    public int read(byte[] array, int offset, int length) throws IOException {
        int readable = readable(length);
        if (readable > 0) {
            int i = input.read(array, offset, readable);
            read += i;
            return i;
        } else {
            throw EXCEPTION;
        }
    }

    @Override
    public long skip(long bytes) throws IOException {
        int readable = readable((int) bytes);
        if (readable > 0) {
            long i = input.skip(readable);
            read += i;
            return i;
        } else {
            throw EXCEPTION;
        }
    }

    private int readable(int length) {
        return (int) Math.min(length, limit - read);
    }

    /**
     * Exception that will get thrown if the {@link Object} is too big to unmarshall
     *
     */
    static final class TooBigObjectException extends IOException {
        private static final long serialVersionUID = 1L;
    }
}