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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2023 Cloud Software Group, Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.engine.export.ooxml;
import java.nio.charset.StandardCharsets;
import java.security.DigestException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.PrintPageFormat;
import net.sf.jasperreports.engine.export.ooxml.type.PaperSizeEnum;
/**
* @author Sanda Zaharia ([email protected])
*/
public final class OoxmlUtils
{
public static PaperSizeEnum getSuitablePaperSize(PrintPageFormat pageFormat)
{
if (pageFormat != null && pageFormat.getPageWidth() != 0 && pageFormat.getPageHeight() != 0)
{
long mmPageWidth = Math.round(((double)pageFormat.getPageWidth() / 72d) * 25.4);
long mmPageHeight = Math.round(((double)pageFormat.getPageHeight() / 72d) * 25.4);
for (PaperSizeEnum paperSize : PaperSizeEnum.values())
{
if (
((paperSize.getWidth() == mmPageWidth) && (paperSize.getHeight() == mmPageHeight))
|| ((paperSize.getHeight() == mmPageWidth) && (paperSize.getWidth() == mmPageHeight))
)
{
return paperSize;
}
}
}
return PaperSizeEnum.UNDEFINED;
}
public static byte[] sha512(String text, byte[] salt, int spinCount)
{
MessageDigest digest = null;
try
{
digest = MessageDigest.getInstance("SHA-512");
}
catch (NoSuchAlgorithmException e)
{
throw new JRRuntimeException(e);
}
digest.update(salt);
byte[] hash = digest.digest(text.getBytes(StandardCharsets.UTF_16LE));
byte[] spin = new byte[4]; // int size
try
{
for (int i = 0; i < spinCount; i++)
{
spin[0] = (byte) ( ( i ) & 0xFF );
spin[1] = (byte) ( ( i >>> 8 ) & 0xFF );
spin[2] = (byte) ( ( i >>> 16 ) & 0xFF );
spin[3] = (byte) ( ( i >>> 24 ) & 0xFF );
digest.reset();
digest.update(hash);
digest.update(spin);
digest.digest(hash, 0, hash.length);
}
}
catch (DigestException e)
{
throw new JRRuntimeException(e);
}
return hash;
}
public static byte[] getSalt()
{
SecureRandom random = new SecureRandom();
byte[] salt = new byte[16];
random.nextBytes(salt);
return salt;
}
}