Java tutorial
/** * Copyright (C) 2014 * keybits@gmx.de * * 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 https://www.gnu.org/licenses/gpl-3.0.txt. * */ package com.github.chrbayer84.keybits; import java.io.BufferedReader; import java.io.File; import java.io.InputStreamReader; import java.math.BigInteger; import org.apache.commons.cli.BasicParser; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.Option; import org.apache.commons.cli.OptionBuilder; import org.apache.commons.cli.Options; import org.bouncycastle.openpgp.PGPPublicKeyRing; import com.google.bitcoin.core.Wallet.SendRequest; public class KeyBits { /** * @param args */ public static void main(String[] args) throws Exception { int number_of_addresses = 1; int depth = 1; String usage = "java -jar KeyBits.jar [options]"; // create parameters which can be chosen Option help = new Option("h", "print this message"); Option verbose = new Option("v", "verbose"); Option exprt = new Option("e", "export public key to blockchain"); Option imprt = OptionBuilder.withArgName("string").hasArg() .withDescription("import public key from blockchain").create("i"); Option blockchain_address = OptionBuilder.withArgName("string").hasArg().withDescription("bitcoin address") .create("a"); Option create_wallet = OptionBuilder.withArgName("file name").hasArg().withDescription("create wallet") .create("c"); Option update_wallet = OptionBuilder.withArgName("file name").hasArg().withDescription("update wallet") .create("u"); Option balance_wallet = OptionBuilder.withArgName("file name").hasArg() .withDescription("return balance of wallet").create("b"); Option show_wallet = OptionBuilder.withArgName("file name").hasArg() .withDescription("show content of wallet").create("w"); Option send_coins = OptionBuilder.withArgName("file name").hasArg().withDescription("send satoshis") .create("s"); Option monitor_pending = OptionBuilder.withArgName("file name").hasArg() .withDescription("monitor pending transactions of wallet").create("p"); Option monitor_depth = OptionBuilder.withArgName("file name").hasArg() .withDescription("monitor transaction depths of wallet").create("d"); Option number = OptionBuilder.withArgName("integer").hasArg() .withDescription("in combination with -c, -d, -r or -s").create("n"); Option reset = OptionBuilder.withArgName("file name").hasArg().withDescription("reset wallet").create("r"); Options options = new Options(); options.addOption(help); options.addOption(verbose); options.addOption(imprt); options.addOption(exprt); options.addOption(blockchain_address); options.addOption(create_wallet); options.addOption(update_wallet); options.addOption(balance_wallet); options.addOption(show_wallet); options.addOption(send_coins); options.addOption(monitor_pending); options.addOption(monitor_depth); options.addOption(number); options.addOption(reset); BasicParser parser = new BasicParser(); CommandLine cmd = null; String header = "This is KeyBits v0.01b.1412953962" + System.getProperty("line.separator"); // show help if wrong usage try { cmd = parser.parse(options, args); } catch (Exception e) { printHelp(usage, options, header); } if (cmd.getOptions().length == 0) printHelp(usage, options, header); if (cmd.hasOption("h")) printHelp(usage, options, header); if (cmd.hasOption("v")) System.out.println(header); if (cmd.hasOption("c") && cmd.hasOption("n")) number_of_addresses = new Integer(cmd.getOptionValue("n")).intValue(); if (cmd.hasOption("d") && cmd.hasOption("n")) depth = new Integer(cmd.getOptionValue("n")).intValue(); String checkpoints_file_name = "checkpoints"; if (!new File(checkpoints_file_name).exists()) checkpoints_file_name = null; // --------------------------------------------------------------------- if (cmd.hasOption("c")) { String wallet_file_name = cmd.getOptionValue("c"); String passphrase = HelpfulStuff.insertPassphrase("enter password for " + wallet_file_name); if (!new File(wallet_file_name).exists()) { String passphrase_ = HelpfulStuff.reInsertPassphrase("enter password for " + wallet_file_name); if (!passphrase.equals(passphrase_)) { System.out.println("passwords do not match"); System.exit(0); } } MyWallet.createWallet(wallet_file_name, wallet_file_name + ".chain", number_of_addresses, passphrase); System.exit(0); } if (cmd.hasOption("u")) { String wallet_file_name = cmd.getOptionValue("u"); MyWallet.updateWallet(wallet_file_name, wallet_file_name + ".chain", checkpoints_file_name); System.exit(0); } if (cmd.hasOption("b")) { String wallet_file_name = cmd.getOptionValue("b"); System.out.println( MyWallet.getBalanceOfWallet(wallet_file_name, wallet_file_name + ".chain").longValue()); System.exit(0); } if (cmd.hasOption("w")) { String wallet_file_name = cmd.getOptionValue("w"); System.out.println(MyWallet.showContentOfWallet(wallet_file_name, wallet_file_name + ".chain")); System.exit(0); } if (cmd.hasOption("p")) { System.out.println("monitoring of pending transactions ... "); String wallet_file_name = cmd.getOptionValue("p"); MyWallet.monitorPendingTransactions(wallet_file_name, wallet_file_name + ".chain", checkpoints_file_name); System.exit(0); } if (cmd.hasOption("d")) { System.out.println("monitoring of transaction depth ... "); String wallet_file_name = cmd.getOptionValue("d"); MyWallet.monitorTransactionDepth(wallet_file_name, wallet_file_name + ".chain", checkpoints_file_name, depth); System.exit(0); } if (cmd.hasOption("r") && cmd.hasOption("n")) { long epoch = new Long(cmd.getOptionValue("n")); System.out.println("resetting wallet ... "); String wallet_file_name = cmd.getOptionValue("r"); File chain_file = (new File(wallet_file_name + ".chain")); if (chain_file.exists()) chain_file.delete(); MyWallet.setCreationTime(wallet_file_name, epoch); MyWallet.updateWallet(wallet_file_name, wallet_file_name + ".chain", checkpoints_file_name); System.exit(0); } if (cmd.hasOption("s") && cmd.hasOption("a") && cmd.hasOption("n")) { String wallet_file_name = cmd.getOptionValue("s"); String address = cmd.getOptionValue("a"); Integer amount = new Integer(cmd.getOptionValue("n")); String wallet_passphrase = HelpfulStuff.insertPassphrase("enter password for " + wallet_file_name); MyWallet.sendCoins(wallet_file_name, wallet_file_name + ".chain", checkpoints_file_name, address, new BigInteger(amount + ""), wallet_passphrase); System.out.println("waiting ..."); Thread.sleep(10000); System.out.println("monitoring of transaction depth ... "); MyWallet.monitorTransactionDepth(wallet_file_name, wallet_file_name + ".chain", checkpoints_file_name, 1); System.out.println("transaction fixed in blockchain with depth " + depth); System.exit(0); } // ---------------------------------------------------------------------------------------- // creates public key // ---------------------------------------------------------------------------------------- GnuPGP gpg = new GnuPGP(); if (cmd.hasOption("e")) { BufferedReader input = new BufferedReader(new InputStreamReader(System.in)); String line = null; StringBuffer sb = new StringBuffer(); while ((line = input.readLine()) != null) sb.append(line + "\n"); PGPPublicKeyRing public_key_ring = gpg.getDearmored(sb.toString()); //System.out.println(gpg.showPublicKeys(public_key_ring)); byte[] public_key_ring_encoded = gpg.getEncoded(public_key_ring); String[] addresses = (new Encoding()).encodePublicKey(public_key_ring_encoded); // System.out.println(gpg.showPublicKey(gpg.getDecoded(encoding.decodePublicKey(addresses)))); // file names for message String public_key_file_name = Long.toHexString(public_key_ring.getPublicKey().getKeyID()) + ".wallet"; String public_key_wallet_file_name = public_key_file_name; String public_key_chain_file_name = public_key_wallet_file_name + ".chain"; // hier muss dass passwort noch nach encodeAddresses weitergeleitet werden da sonst zweimal abfrage String public_key_wallet_passphrase = HelpfulStuff .insertPassphrase("enter password for " + public_key_wallet_file_name); if (!new File(public_key_wallet_file_name).exists()) { String public_key_wallet_passphrase_ = HelpfulStuff .reInsertPassphrase("enter password for " + public_key_wallet_file_name); if (!public_key_wallet_passphrase.equals(public_key_wallet_passphrase_)) { System.out.println("passwords do not match"); System.exit(0); } } MyWallet.createWallet(public_key_wallet_file_name, public_key_chain_file_name, 1, public_key_wallet_passphrase); MyWallet.updateWallet(public_key_wallet_file_name, public_key_chain_file_name, checkpoints_file_name); String public_key_address = MyWallet.getAddress(public_key_wallet_file_name, public_key_chain_file_name, 0); System.out.println("address of public key: " + public_key_address); // 10000 additional satoshis for sending transaction to address of recipient of message and 10000 for fees KeyBits.encodeAddresses(public_key_wallet_file_name, public_key_chain_file_name, checkpoints_file_name, addresses, 2 * SendRequest.DEFAULT_FEE_PER_KB.intValue(), depth, public_key_wallet_passphrase); } if (cmd.hasOption("i")) { String location = cmd.getOptionValue("i"); String[] addresses = null; if (location.indexOf(",") > -1) { String[] locations = location.split(","); addresses = MyWallet.getAddressesFromBlockAndTransaction("main.wallet", "main.wallet.chain", checkpoints_file_name, locations[0], locations[1]); } else { addresses = BlockchainDotInfo.getKeys(location); } byte[] encoded = (new Encoding()).decodePublicKey(addresses); PGPPublicKeyRing public_key_ring = gpg.getDecoded(encoded); System.out.println(gpg.getArmored(public_key_ring)); System.exit(0); } } public static void encodeAddresses(String wallet_file_name, String chain_file_name, String checkpoints_file_name, String[] addresses, int amount, int depth, String passphrase) throws Exception { // compute necessary amount of satoshis for encoding addresses using second wallet (keypair or message wallet) double satoshis_of_bitcoin = 100000000.0; int fee = MyWallet.getFees(1, addresses.length); int amount_per_address = SendRequest.DEFAULT_FEE_PER_KB.intValue(); int number_of_addresses = addresses.length; BigInteger needed = new BigInteger("" + (number_of_addresses * amount_per_address + fee + amount)); // create or update second wallet and get available funds BigInteger available = MyWallet.getBalanceOfWallet(wallet_file_name, chain_file_name); System.out.println("number of outputs: " + number_of_addresses); System.out.println("available funds : " + available + " satoshis (" + available.longValue() / satoshis_of_bitcoin + " XBT)"); System.out.println("needed fees : " + fee + " satoshis (" + fee / satoshis_of_bitcoin + " XBT)"); System.out.println("needed funds : " + needed + " satoshis (" + needed.longValue() / satoshis_of_bitcoin + " XBT)"); // test if there are enough funds in second wallet // if yes, create addresses, else move enough founds to second wallet if (available.longValue() >= needed.longValue()) { createAddresses(wallet_file_name, chain_file_name, checkpoints_file_name, addresses, new BigInteger(fee + ""), new BigInteger(amount_per_address + ""), depth, passphrase); } else { // get first (and only) address in second wallet String address = MyWallet.getAddress(wallet_file_name, chain_file_name, 0); //System.out.println(address); BigInteger to_send = new BigInteger("" + (needed.longValue() - available.longValue())); System.out.println(); System.out.println("please send " + to_send.longValue() + " satoshis (" + to_send.longValue() / satoshis_of_bitcoin + " XBT) to address " + address); System.exit(0); } } public static void createAddresses(String wallet_file_name, String chain_file_name, String checkpoints_file_name, String[] addresses, BigInteger transaction_cost, BigInteger amount_per_address, int depth, String passphrase) throws Exception { if (HelpfulStuff.yesNo("create addresses?") == 1) { try { System.out.println("creating addresses of keys ... "); MyWallet.createKeys(wallet_file_name, chain_file_name, checkpoints_file_name, addresses, transaction_cost, amount_per_address, passphrase); // wait until transaction is not pending anymore //System.out.println("monitoring of pending transactions ... "); //MyWallet.monitorPendingTransactions(usr_dir + wallet, usr_dir + chain, passphrase); System.out.println("waiting ..."); Thread.sleep(10000); System.out.println("monitoring of transaction depth ... "); MyWallet.monitorTransactionDepth(wallet_file_name, chain_file_name, checkpoints_file_name, depth); System.out.println("transaction fixed in blockchain with depth " + depth); System.exit(0); } catch (Exception e) { e.printStackTrace(); System.exit(-1); } } else System.exit(0); } public static void printHelp(String usage, Options options, String header) { System.out.println(header); HelpFormatter formatter = new HelpFormatter(); formatter.printHelp(usage, options); System.exit(0); } }