com.leclercb.taskunifier.gui.components.license.LicenseUtils.java Source code

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Here is the source code for com.leclercb.taskunifier.gui.components.license.LicenseUtils.java

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/*
 * TaskUnifier
 * Copyright (c) 2013, Benjamin Leclerc
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 
 *   - Neither the name of TaskUnifier or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.leclercb.taskunifier.gui.components.license;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.Calendar;
import java.util.logging.Level;

import org.apache.commons.io.FileUtils;

import com.leclercb.commons.api.license.License;
import com.leclercb.commons.api.license.LicenseManager;
import com.leclercb.commons.api.license.LicenseType;
import com.leclercb.commons.api.license.exceptions.LicenseException;
import com.leclercb.commons.api.license.exceptions.NoLicenseException;
import com.leclercb.commons.api.utils.CheckUtils;
import com.leclercb.commons.gui.logger.GuiLogger;
import com.leclercb.taskunifier.gui.constants.Constants;
import com.leclercb.taskunifier.gui.main.Main;

public final class LicenseUtils {

    public static final String PUBLIC_KEY = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKC"
            + "AQEAhohNXK6blnWsh24Mc+RrehiTlIWLHZNV5sWx" + "6h2TlPK6uufHJpx9SrQbln8CSJzQ8c1UayXTL8KH"
            + "LwJ743BGTqsWXUXYiGYqjAQL/KE03UrebRifuVL3" + "Fada+hmzF8NYMfKKDUqv++MA0zknzMywGk2bB0gx"
            + "4l2oO7g5psBc1XjWPaE0LV3b0hbKTCUxHqLTqBwN" + "i39hIfKZ+gTlzRriUZLWc/AUmbRTvFzyA9EYHOWP"
            + "rTprRRcoOcvsnkSNODQFcpoiIV4EvK03JuIBGK+S" + "sS/yZrLtaWrV5HUzzkdKWqjES3iU3xnsGGh+Z5XD"
            + "dF2GXHHvbQKNLEF/C1TVs4RusQIDAQAB";

    private static License LICENSE;

    private LicenseUtils() {

    }

    public static License loadLicense() {
        if (LICENSE != null)
            return LICENSE;

        try {
            File file = new File(Main.getLicenseFile());
            String license = FileUtils.readFileToString(file, "UTF-8");

            InputStream publicKey = LicenseManager.keyDecoder(PUBLIC_KEY);
            LicenseManager lm = new LicenseManager(publicKey, null);
            License l = lm.readLicense(license);

            if (l.getLicenseType() == LicenseType.TRIAL)
                Main.getSettings().setBooleanProperty("license.trial.used", true);

            return l;
        } catch (FileNotFoundException e) {

        } catch (Exception e) {
            GuiLogger.getLogger().log(Level.SEVERE, "Cannot load license", e);
        }

        return null;
    }

    public static void saveLicense(String license) throws Exception {
        try {
            CheckUtils.isNotNull(license);

            license = license.trim();

            File file = new File(Main.getLicenseFile());
            FileUtils.writeStringToFile(file, license);

            LICENSE = null;

            Main.reloadProVersion();
        } catch (Exception e) {
            GuiLogger.getLogger().log(Level.SEVERE, "Cannot save license", e);
        }
    }

    public static void checkLicense() throws LicenseException {
        License license = loadLicense();

        checkLicense(license);
    }

    public static void checkLicense(License license) throws LicenseException {
        if (license == null)
            throw new NoLicenseException();

        try {
            license.validate(Calendar.getInstance(), Constants.getVersion());
        } catch (LicenseException e) {
            GuiLogger.getLogger().log(Level.SEVERE, "License validation failed", e);

            throw e;
        }
    }

    public static boolean isFirstTrialLicense() {
        return !Main.getSettings().getBooleanProperty("license.trial.used");
    }

}