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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2020 Payara Foundation and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://github.com/payara/Payara/blob/main/LICENSE.txt
 * See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * The Payara Foundation designates this particular file as subject to the "Classpath"
 * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 */
package fish.payara.ejb.opentracing;

import java.io.IOException;
import java.io.InputStream;
import java.io.InvalidClassException;
import java.io.ObjectInputStream;
import java.io.ObjectStreamClass;
import java.util.HashMap;

import static fish.payara.ejb.opentracing.OpenTracingIiopInterceptorFactory.OPENTRACING_IIOP_SERIAL_VERSION_UID;

/**
 * Extension of ObjectInputStream for deserialising {@link OpenTracingIiopTextMap}
 *
 * @author Andrew Pielage 
 */
public class OpenTracingIiopObjectInputStream extends ObjectInputStream {

    public OpenTracingIiopObjectInputStream(InputStream inputStream) throws IOException {
        super(inputStream);
    }

    @Override
    protected Class resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException {
        // Only deserialise main transport class and its required field types
        if ((desc.getName().equals(OpenTracingIiopTextMap.class.getName())
                && desc.getSerialVersionUID() == OPENTRACING_IIOP_SERIAL_VERSION_UID)
                || desc.getName().equals(HashMap.class.getName())) {
            return super.resolveClass(desc);
        } else {
            throw new InvalidClassException("Not an authorised class", desc.getName());
        }
    }

}