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 *
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 * 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
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package org.glassfish.grizzly.http.server.util;

import java.io.File;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.glassfish.grizzly.Grizzly;
import org.glassfish.grizzly.GrizzlyFuture;
import org.glassfish.grizzly.http.server.Request;
import org.glassfish.grizzly.http.server.Response;
import org.glassfish.grizzly.localization.LogMessages;
import org.glassfish.grizzly.ssl.SSLBaseFilter.CertificateEvent;
import org.glassfish.grizzly.ssl.SSLSupport;
import org.glassfish.grizzly.ssl.SSLSupportImpl;

public class RequestUtils {

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


    public static Object populateCertificateAttribute(final Request request) {
        Object certificates = null;

        if (request.getRequest().isSecure()) {
            if (!request.getRequest().isUpgrade()) {
                // It's normal HTTP request, not upgraded one
                try {
                    request.getInputBuffer().fillFully(
                            request.getHttpFilter().getConfiguration().getMaxBufferedPostSize());
                } catch (IOException e) {
                    throw new IllegalStateException("Can't complete SSL re-negotation", e);
                }
            }

            GrizzlyFuture certFuture =
                    new CertificateEvent(true).trigger(request.getContext());
            try {
                // TODO: make the timeout configurable
                certificates = certFuture.get(30, TimeUnit.SECONDS);
            } catch (Exception e) {
                if (LOGGER.isLoggable(Level.FINE)) {
                    LOGGER.log(Level.FINE,
                               "Unable to obtain certificates from peer.",
                               e);
                }
            }
            request.setAttribute(SSLSupport.CERTIFICATE_KEY, certificates);
        }

        return certificates;
    }

    public static void populateSSLAttributes(final Request request) {
        if (request.isSecure()) {
            try {
                SSLSupport sslSupport = new SSLSupportImpl(request.getContext().getConnection());
                Object sslO = sslSupport.getCipherSuite();
                if (sslO != null) {
                    request.setAttribute(SSLSupport.CIPHER_SUITE_KEY, sslO);
                }
                sslO = sslSupport.getPeerCertificateChain(false);
                if (sslO != null) {
                    request.setAttribute(SSLSupport.CERTIFICATE_KEY, sslO);
                }
                sslO = sslSupport.getKeySize();
                if (sslO != null) {
                    request.setAttribute(SSLSupport.KEY_SIZE_KEY, sslO);
                }
                sslO = sslSupport.getSessionId();
                if (sslO != null) {
                    request.setAttribute(SSLSupport.SESSION_ID_KEY, sslO);
                }
            } catch (Exception ioe) {
                if (LOGGER.isLoggable(Level.FINE)) {
                    LOGGER.log(Level.FINE,
                            "Unable to populate SSL attributes",
                            ioe);
                }
            }
        }
    }


    public static void handleSendFile(final Request request) {
        final Object f = request.getAttribute(Request.SEND_FILE_ATTR);
        if (f != null) {
            final Response response = request.getResponse();
            if (response.isCommitted()) {
                if (LOGGER.isLoggable(Level.WARNING)) {
                    LOGGER.log(Level.WARNING,
                            LogMessages.WARNING_GRIZZLY_HTTP_SERVER_REQUESTUTILS_SENDFILE_FAILED());
                }

                return;
            }

            final File file = (File) f;
            Long offset = (Long) request.getAttribute(Request.SEND_FILE_START_OFFSET_ATTR);
            Long len = (Long) request.getAttribute(Request.SEND_FILE_WRITE_LEN_ATTR);
            if (offset == null) {
                offset = 0L;
            }
            if (len == null) {
                len = file.length();
            }
            // let the sendfile() method suspend/resume the response.
            response.getOutputBuffer().sendfile(file, offset, len, null);
        }
    }
}




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