simpleserver.thread.Statistics.java Source code

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Here is the source code for simpleserver.thread.Statistics.java

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/*
 * Copyright (c) 2010 SimpleServer authors (see CONTRIBUTORS)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package simpleserver.thread;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;

import org.json.JSONException;
import org.json.JSONObject;

import simpleserver.Main;
import simpleserver.Server;
import simpleserver.nbt.WorldFile;

/*
 * This class is used to collect usage statistics of all SimpleServer users. To fulfill
 * this task it is necessary to send a short request to our server when starting SimpleServer
 * and then an even shorter one every minute it runs. This only uses a negligible amount of
 * computational power and bandwidth and should not impair your gaming experience in any way.
 * 
 * In order to preserve your privacy the gathered data is stored anonymously which means
 * your server is only identified by your random map seed and the first two bytes of your
 * IP address (if your IP is 135.42.67.166 only 135.42 is stored).
 * 
 * The collected data consists of the following information:
 *   SimpleServer version
 *   Server options: alternativeJar, onlineMode, customAuth, maxPlayers
 *   Server statistics: number of registered players, total playing hours
 *  
 * Your data will not be used in any evil plots to take over the world. Before publishing
 * it in any way your server identifier (see above) is removed to guarantee complete anonymity.
 * 
 * If you are paranoid or just don't want to support the developers of SimpleServer you can turn
 * this feature off by adding the property "disableStatistics" with value "true" to your
 * simpleserver.proeprties file.
 * 
 */

public class Statistics extends Thread {
    private static final int VERSION = 1;
    private static final String URL = "simpleserver.ceilingcat.ch";
    private static final String PATH = "/api/" + VERSION;

    private Server server;
    private boolean run = true;
    private int id;

    public Statistics(Server server) {
        this.server = server;
    }

    private void getSessionId() {
        WorldFile world = null;
        try {
            world = new WorldFile(server);
        } catch (Exception ex) {
        }
        long seed = world.seed();

        JSONObject data = new JSONObject();
        JSONObject stats = new JSONObject();
        JSONObject options = new JSONObject();
        try {
            data.put("options", options);
            data.put("stats", stats);
            data.put("version", Main.version);

            options.put("jar", server.options.get("alternateJarFile"));
            options.put("onlineMode", server.config.properties.getBoolean("onlineMode"));
            options.put("custAuth", server.config.properties.getBoolean("custAuth"));
            options.put("maxPlayers", server.config.properties.getInt("maxPlayers"));

            stats.put("registeredPlayers", server.data.players.count());
            stats.put("totalHours", server.data.players.stats.totalHours());

            JSONObject response = getRemoteJSONObject(data, "connect", Long.toHexString(seed));
            id = response.getInt("id");
        } catch (Exception e) {
            run = false;
        }
    }

    private void heartbeat() {
        try {
            getRemoteJSONObject("heartbeat", Integer.toString(id));
        } catch (Exception e) {
        }
    }

    public void halt() {
        run = false;
        interrupt();
    }

    @Override
    public void run() {
        if (server.options.getBoolean("disableStatistics")) {
            return;
        }
        getSessionId();
        while (run) {
            try {
                heartbeat();
                Thread.sleep(60000);
            } catch (InterruptedException e) {
            }
        }
    }

    private static JSONObject getRemoteJSONObject(String... params)
            throws JSONException, IOException, URISyntaxException {
        return getRemoteJSONObject(null, params);
    }

    private static JSONObject getRemoteJSONObject(JSONObject data, String... params)
            throws JSONException, IOException, URISyntaxException {
        StringBuilder path = new StringBuilder(PATH);
        for (String param : params) {
            path.append('/');
            path.append(param);
        }

        return new JSONObject(getRemoteContent(new URI("http", URL, path.toString(), null).toURL(), data));
    }

    private static String getRemoteContent(URL url, JSONObject data) throws IOException {
        URLConnection con = url.openConnection();
        if (data != null) {
            String post = "data=" + URLEncoder.encode(data.toString(), "UTF-8");
            con.setDoOutput(true);
            OutputStreamWriter writer = new OutputStreamWriter(con.getOutputStream());
            writer.write(post);
            writer.flush();
        }
        BufferedReader reader = new BufferedReader(new InputStreamReader(con.getInputStream()));

        StringBuilder content = new StringBuilder();

        while (reader.ready()) {
            content.append(reader.readLine());
        }

        return content.toString();
    }
}