net.mohatu.bloocoin.miner.Miner.java Source code

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Here is the source code for net.mohatu.bloocoin.miner.Miner.java

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/*
 * Copyright (C) 2013 Mohatu.net
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>
 * @author Mohatu
 * @version 2.9
 */

package net.mohatu.bloocoin.miner;

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.security.NoSuchAlgorithmException;
import java.util.Random;

import org.apache.commons.codec.digest.DigestUtils;

public final class Miner implements Runnable {

    private String difficulty = "";

    public Miner(int diff) {
        for (int i = 0; i < diff; i++)
            difficulty += "0";
    }

    @Override
    public void run() {
        try {
            mine();
        } catch (NoSuchAlgorithmException e) {
            System.out.println("No such algorithm found: SHA-512");
        }
    }

    public void mine() throws NoSuchAlgorithmException {
        // String testString = "dx3NAa"; //dx3NAa257363
        while (Main.getStatus()) {
            String startString = randomString();
            System.out.println("Starting: " + startString);

            for (int counter = 0; counter <= 10000000; counter++) {
                Main.updateCounter();
                String currentString = startString + counter;
                String hash = DigestUtils.sha512Hex(currentString);

                if (hash.startsWith(difficulty)) {
                    new Thread(new Submitter(hash, currentString)).start();

                    Main.updateSolved(currentString);
                    System.out.println("Success: " + currentString);

                    try {
                        PrintWriter out = new PrintWriter(new BufferedWriter(
                                new FileWriter(System.getProperty("user.home") + "/.bloocoin/solved.dat", true)));
                        out.println(currentString);
                        out.close();
                    } catch (IOException e) {
                        // Error
                        System.out.println("Unable to save to BLC_Solved.txt, check permissions.");
                    }

                }

                if (!Main.getStatus()) {
                    counter = 10000000;
                    System.out.println("STOPPING");
                }
            }
        }
    }

    public String randomString() {
        String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        Random r = new Random();
        int limit = 5;
        StringBuffer buf = new StringBuffer();

        buf.append(chars.charAt(r.nextInt(chars.length())));
        for (int i = 0; i < limit; i++) {
            buf.append(chars.charAt(r.nextInt(chars.length())));
        }
        return buf.toString();
    }

    public void submit() {

    }

}