public Transaction PerformBreezeRegistration(BreezeConfiguration config, DBUtils db)
{
var network = Network.StratisMain;
if (config.IsTestNet)
{
// TODO: Change to StratisTest when support is added to NStratis
network = Network.TestNet;
}
RPCHelper stratisHelper = null;
RPCClient stratisRpc = null;
BitcoinSecret privateKeyEcdsa = null;
try {
stratisHelper = new RPCHelper(network);
stratisRpc = stratisHelper.GetClient(config.RpcUser, config.RpcPassword, config.RpcUrl);
privateKeyEcdsa = stratisRpc.DumpPrivKey(BitcoinAddress.Create(config.TumblerEcdsaKeyAddress));
}
catch (Exception e) {
Console.WriteLine("ERROR: Unable to retrieve private key to fund registration transaction");
Console.WriteLine("Is the wallet unlocked?");
Console.WriteLine(e);
Environment.Exit(0);
}
// Retrieve tumbler's parameters so that the registration details can be constructed
//var tumblerApi = new TumblerApiAccess(config.TumblerApiBaseUrl);
//string json = tumblerApi.GetParameters().Result;
//var tumblerParameters = JsonConvert.DeserializeObject<TumblerParameters>(json);
var registrationToken = new RegistrationToken(255, config.Ipv4Address, config.Ipv6Address, config.OnionAddress, config.Port, config.TumblerRsaKeyPath);
var msgBytes = registrationToken.GetRegistrationTokenBytes(privateKeyEcdsa);
// Create the registration transaction using the bytes generated above
var rawTx = CreateBreezeRegistrationTx(network, msgBytes, config.TxOutputValueSetting);
var txUtils = new TransactionUtils();
try {
// Replace fundrawtransaction with C# implementation. The legacy wallet
// software does not support the RPC call.
var fundedTx = txUtils.FundRawTx(stratisRpc, rawTx, config.TxFeeValueSetting, BitcoinAddress.Create(config.TumblerEcdsaKeyAddress));
var signedTx = stratisRpc.SendCommand("signrawtransaction", fundedTx.ToHex());
var txToSend = new Transaction(((JObject)signedTx.Result)["hex"].Value <string>());
db.UpdateOrInsert <string>("RegistrationTransactions", DateTime.Now.ToString("yyyyMMddHHmmss"), txToSend.ToHex(), (o, n) => n);
stratisRpc.SendRawTransaction(txToSend);
return(txToSend);
}
catch (Exception e)
{
Console.WriteLine("ERROR: Unable to broadcast registration transaction");
Console.WriteLine(e);
}
return(null);
}
public static void Main(string[] args)
{
var serviceProvider = new ServiceCollection()
.AddLogging()
.AddSingleton <ITumblerService, TumblerService>()
.BuildServiceProvider();
serviceProvider
.GetService <ILoggerFactory>()
.AddConsole(LogLevel.Debug);
// TODO: It is messy having both a BreezeD logger and an NTumbleBit logger
var logger = serviceProvider.GetService <ILoggerFactory>()
.CreateLogger <Program>();
logger.LogInformation("{Time} Reading Breeze server configuration", DateTime.Now);
// Check OS-specific default config path for the config file. Create default file if it does not exist
var configDir = BreezeConfiguration.GetDefaultDataDir("BreezeD");
var configPath = Path.Combine(configDir, "breeze.conf");
logger.LogInformation("{Time} Configuration file path {Path}", DateTime.Now, configPath);
var config = new BreezeConfiguration(configPath);
var dbPath = Path.Combine(configDir, "db");
logger.LogInformation("{Time} Database path {Path}", DateTime.Now, dbPath);
var db = new DBUtils(dbPath);
logger.LogInformation("{Time} Checking node registration on the blockchain", DateTime.Now);
var registration = new BreezeRegistration();
if (!registration.CheckBreezeRegistration(config, db))
{
logger.LogInformation("{Time} Creating or updating node registration", DateTime.Now);
var regTx = registration.PerformBreezeRegistration(config, db);
if (regTx != null)
{
logger.LogInformation("{Time} Submitted transaction {TxId} via RPC for broadcast", DateTime.Now, regTx.GetHash().ToString());
}
else
{
logger.LogInformation("{Time} Unable to broadcast transaction via RPC", DateTime.Now);
Environment.Exit(0);
}
}
else
{
logger.LogInformation("{Time} Node registration has already been performed", DateTime.Now);
}
logger.LogInformation("{Time} Starting Tumblebit server", DateTime.Now);
db.UpdateOrInsert <string>("TumblerStartupLog", DateTime.Now.ToString("yyyyMMddHHmmss"), "Tumbler starting", (o, n) => n);
var tumbler = serviceProvider.GetService <ITumblerService>();
tumbler.StartTumbler(config.IsTestNet);
}
public bool CheckBreezeRegistration(BreezeConfiguration config, DBUtils db)
{
var network = Network.StratisMain;
if (config.IsTestNet)
{
// TODO: Change to StratisTest when it is added to NStratis
network = Network.TestNet;
}
// In order to determine if the registration sequence has been performed
// before, and to see if a previous performance is still valid, interrogate
// the database to see if any transactions have been recorded.
var transactions = db.GetDictionary <string, string>("RegistrationTransactions");
// If no transactions exist, the registration definitely needs to be done
if (transactions == null || transactions.Count == 0)
{
return(false);
}
string highestKey = null;
foreach (var txn in transactions)
{
// Find most recent transaction. Assume that the rowKeys are ordered
// lexicographically.
if (highestKey == null)
{
highestKey = txn.Key;
}
if (String.Compare(txn.Key, highestKey) == 1)
{
highestKey = txn.Key;
}
}
var mostRecentTxn = new Transaction(transactions[highestKey]);
// Decode transaction and check if the decoded bitstream matches the
// current configuration
// TODO: Check if transaction is actually confirmed on the blockchain?
var registrationToken = new RegistrationToken();
registrationToken.ParseTransaction(mostRecentTxn, network);
if (!config.Ipv4Address.Equals(registrationToken.Ipv4Addr))
{
return(false);
}
if (!config.Ipv6Address.Equals(registrationToken.Ipv6Addr))
{
return(false);
}
if (config.OnionAddress != registrationToken.OnionAddress)
{
return(false);
}
if (config.Port != registrationToken.Port)
{
return(false);
}
return(true);
}
