processing.app.UpdateCheck.java Source code

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Here is the source code for processing.app.UpdateCheck.java

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/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */

/*
  Part of the Processing project - http://processing.org
    
  Copyright (c) 2005-06 Ben Fry and Casey Reas
    
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
    
  This program 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 General Public License for more details.
    
  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software Foundation,
  Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

package processing.app;

import org.apache.commons.compress.utils.IOUtils;
import processing.app.legacy.PApplet;

import javax.swing.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Random;

import static processing.app.I18n.tr;

/**
 * Threaded class to check for updates in the background.
 * <P>
 * This is the class that handles the mind control and stuff for
 * spying on our users and stealing their personal information.
 * A random ID number is generated for each user, and hits the server
 * to check for updates. Also included is the operating system and
 * its version and the version of Java being used to run Processing.
 * <P>
 * The ID number also helps provide us a general idea of how many
 * people are using Processing, which helps us when writing grant
 * proposals and that kind of thing so that we can keep Processing free.
 */
public class UpdateCheck implements Runnable {
    Base base;
    String downloadURL = tr("http://www.arduino.cc/latest.txt");

    static final long ONE_DAY = 24 * 60 * 60 * 1000;

    public UpdateCheck(Base base) {
        Thread thread = new Thread(this);
        this.base = base;
        thread.start();
    }

    public void run() {
        //System.out.println("checking for updates...");

        // generate a random id in case none exists yet
        Random r = new Random();
        long id = r.nextLong();

        String idString = PreferencesData.get("update.id");
        if (idString != null) {
            id = Long.parseLong(idString);
        } else {
            PreferencesData.set("update.id", String.valueOf(id));
        }

        try {
            String info;
            info = URLEncoder.encode(
                    id + "\t" + PApplet.nf(BaseNoGui.REVISION, 4) + "\t" + System.getProperty("java.version") + "\t"
                            + System.getProperty("java.vendor") + "\t" + System.getProperty("os.name") + "\t"
                            + System.getProperty("os.version") + "\t" + System.getProperty("os.arch"),
                    "UTF-8");

            int latest = readInt(downloadURL + "?" + info);

            String lastString = PreferencesData.get("update.last");
            long now = System.currentTimeMillis();
            if (lastString != null) {
                long when = Long.parseLong(lastString);
                if (now - when < ONE_DAY) {
                    // don't annoy the shit outta people
                    return;
                }
            }
            PreferencesData.set("update.last", String.valueOf(now));

            String prompt = tr("A new version of Arduino is available,\n"
                    + "would you like to visit the Arduino download page?");

            if (base.activeEditor != null) {
                if (latest > BaseNoGui.REVISION) {
                    Object[] options = { tr("Yes"), tr("No") };
                    int result = JOptionPane.showOptionDialog(base.activeEditor, prompt, tr("Update"),
                            JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[0]);
                    if (result == JOptionPane.YES_OPTION) {
                        Base.openURL(tr("http://www.arduino.cc/en/Main/Software"));
                    }
                }
            }
        } catch (Exception e) {
            //e.printStackTrace();
            //System.err.println("Error while trying to check for an update.");
        }
    }

    protected int readInt(String filename) throws IOException {
        URL url = new URL(filename);
        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new InputStreamReader(url.openStream()));
            return Integer.parseInt(reader.readLine());
        } finally {
            IOUtils.closeQuietly(reader);
        }
    }
}