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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2009-2015 Oracle 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://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/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 packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 *
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package org.glassfish.grizzly.portunif.finders;

import java.util.logging.Level;

import java.util.logging.Logger;
import javax.net.ssl.SSLException;
import org.glassfish.grizzly.Buffer;
import org.glassfish.grizzly.Grizzly;
import org.glassfish.grizzly.filterchain.FilterChainContext;
import org.glassfish.grizzly.portunif.PUContext;
import org.glassfish.grizzly.portunif.ProtocolFinder;
import org.glassfish.grizzly.ssl.SSLEngineConfigurator;
import static org.glassfish.grizzly.ssl.SSLUtils.*;

/**
 *
 * @author Alexey Stashok
 */
public class SSLProtocolFinder implements ProtocolFinder {

    private static final Logger LOGGER = Grizzly.logger(SSLProtocolFinder.class);

    private final SSLEngineConfigurator sslEngineConfigurator;

    public SSLProtocolFinder(final SSLEngineConfigurator sslEngineConfigurator) {
        this.sslEngineConfigurator = sslEngineConfigurator;
    }

    @Override
    public Result find(final PUContext puContext, final FilterChainContext ctx) {
        final Buffer buffer = ctx.getMessage();
        try {
            final int expectedLength = getSSLPacketSize(buffer);
            if (expectedLength == -1
                    || buffer.remaining() < expectedLength) {
                return Result.NEED_MORE_DATA;
            }
        } catch (SSLException e) {
            LOGGER.log(Level.FINE, "Packet header is not SSL", e);
            return Result.NOT_FOUND;
        }

        return Result.FOUND;
    }
}