/// <summary>
/// Create a P2PKH wallet with one key
/// </summary>
/// <param name="rootKey">The master key to use</param>
public WalletCreation(BitcoinExtPubKey rootKey)
{
Network = rootKey.Network;
RootKeys = new[] { rootKey.ExtPubKey };
SignatureRequired = 1;
UseP2SH = false;
}
/// <summary>
/// Create a P2PKH wallet with one key
/// </summary>
/// <param name="rootKey">The master key to use</param>
public WalletCreation(BitcoinExtPubKey rootKey)
{
Network = rootKey.Network;
RootKeys = new[] { rootKey.ExtPubKey };
SignatureRequired = 1;
UseP2SH = false;
Name = Guid.NewGuid().ToString();
}
public DerivationStrategyBase Parse(string str)
{
if (str == null)
{
throw new ArgumentNullException(nameof(str));
}
str = str.Trim();
HashSet <string> hintedLabels = new HashSet <string>();
var hintDestination = HintScriptPubKey?.GetDestination();
if (hintDestination != null)
{
if (hintDestination is KeyId)
{
hintedLabels.Add("legacy");
}
if (hintDestination is ScriptId)
{
hintedLabels.Add("p2sh");
}
}
try
{
var result = new DerivationStrategyFactory(Network).Parse(str);
return(FindMatch(hintedLabels, result));
}
catch
{
}
Dictionary <uint, string[]> electrumMapping = new Dictionary <uint, string[]>();
//Source https://github.com/spesmilo/electrum/blob/9edffd17542de5773e7284a8c8a2673c766bb3c3/lib/bitcoin.py
var standard = 0x0488b21eU;
electrumMapping.Add(standard, new[] { "legacy" });
var p2wpkh_p2sh = 0x049d7cb2U;
electrumMapping.Add(p2wpkh_p2sh, new string[] { "p2sh" });
var p2wpkh = 0x4b24746U;
electrumMapping.Add(p2wpkh, Array.Empty <string>());
var parts = str.Split('-');
for (int i = 0; i < parts.Length; i++)
{
if (IsLabel(parts[i]))
{
hintedLabels.Add(parts[i].Substring(1, parts[i].Length - 2).ToLowerInvariant());
continue;
}
try
{
var data = Encoders.Base58Check.DecodeData(parts[i]);
if (data.Length < 4)
{
continue;
}
var prefix = Utils.ToUInt32(data, false);
var standardPrefix = Utils.ToBytes(ChainType == NBXplorer.ChainType.Main ? 0x0488b21eU : 0x043587cf, false);
for (int ii = 0; ii < 4; ii++)
{
data[ii] = standardPrefix[ii];
}
var derivationScheme = new BitcoinExtPubKey(Encoders.Base58Check.EncodeData(data), Network).ToString();
electrumMapping.TryGetValue(prefix, out string[] labels);
if (labels != null)
{
foreach (var label in labels)
{
hintedLabels.Add(label.ToLowerInvariant());
}
}
parts[i] = derivationScheme;
}
catch { continue; }
}
if (hintDestination != null)
{
if (hintDestination is WitKeyId)
{
hintedLabels.Remove("legacy");
hintedLabels.Remove("p2sh");
}
}
str = string.Join('-', parts.Where(p => !IsLabel(p)));
foreach (var label in hintedLabels)
{
str = $"{str}-[{label}]";
}
return(FindMatch(hintedLabels, new DerivationStrategyFactory(Network).Parse(str)));
}
/// <inheritdoc />
public async Task TumbleAsync(string originWalletName, string destinationWalletName, string originWalletPassword)
{
// Make sure it won't start new tumbling round if already started
if (this.State == TumbleState.Tumbling)
{
this.logger.LogDebug("Tumbler is already running");
throw new Exception("Tumbling is already running");
}
this.TumblingState.TumblerUri = new Uri(this.TumblerAddress);
// Check if in initial block download
if (!this.chain.IsDownloaded())
{
this.logger.LogDebug("Chain is still being downloaded: " + this.chain.Tip);
throw new Exception("Chain is still being downloaded");
}
Wallet originWallet = this.walletManager.GetWallet(originWalletName);
Wallet destinationWallet = this.walletManager.GetWallet(destinationWalletName);
// Check if password is valid before starting any cycles
try
{
HdAddress tempAddress = originWallet.GetAccountsByCoinType(this.TumblingState.CoinType).First()
.GetFirstUnusedReceivingAddress();
originWallet.GetExtendedPrivateKeyForAddress(originWalletPassword, tempAddress);
}
catch (Exception)
{
this.logger.LogDebug("Origin wallet password appears to be invalid");
throw new Exception("Origin wallet password appears to be invalid");
}
// Update the state and save
this.TumblingState.DestinationWallet = destinationWallet ?? throw new Exception($"Destination wallet not found. Have you created a wallet with name {destinationWalletName}?");
this.TumblingState.DestinationWalletName = destinationWalletName;
this.TumblingState.OriginWallet = originWallet ?? throw new Exception($"Origin wallet not found. Have you created a wallet with name {originWalletName}?");
this.TumblingState.OriginWalletName = originWalletName;
this.TumblingState.OriginWalletPassword = originWalletPassword;
var accounts = this.TumblingState.DestinationWallet.GetAccountsByCoinType(this.TumblingState.CoinType);
// TODO: Possibly need to preserve destination account name in tumbling state. Default to first account for now
string accountName = accounts.First().Name;
HdAccount destAccount = this.TumblingState.DestinationWallet.GetAccountByCoinType(accountName, this.TumblingState.CoinType);
string key = destAccount.ExtendedPubKey;
KeyPath keyPath = new KeyPath("0");
// Stop and dispose onlymonitor
if (this.broadcasterJob != null && this.broadcasterJob.Started)
{
await this.broadcasterJob.Stop().ConfigureAwait(false);
}
this.runtime?.Dispose();
// Bypass Tor for integration tests
FullNodeTumblerClientConfiguration config;
if (this.TumblerAddress.Contains("127.0.0.1"))
{
config = new FullNodeTumblerClientConfiguration(this.TumblingState, onlyMonitor: false,
connectionTest: false, useProxy: false);
}
else
{
config = new FullNodeTumblerClientConfiguration(this.TumblingState, onlyMonitor: false,
connectionTest: false, useProxy: true);
}
this.runtime = await TumblerClientRuntime.FromConfigurationAsync(config).ConfigureAwait(false);
// Check if origin wallet has a sufficient balance to begin tumbling at least 1 cycle
if (!runtime.HasEnoughFundsForCycle(true))
{
this.logger.LogDebug("Insufficient funds in origin wallet");
throw new Exception("Insufficient funds in origin wallet");
}
BitcoinExtPubKey extPubKey = new BitcoinExtPubKey(key, this.runtime.Network);
if (key != null)
{
this.runtime.DestinationWallet =
new ClientDestinationWallet(extPubKey, keyPath, this.runtime.Repository, this.runtime.Network);
}
this.TumblerParameters = this.runtime.TumblerParameters;
// Run onlymonitor mode
this.broadcasterJob = this.runtime.CreateBroadcasterJob();
this.broadcasterJob.Start();
// Run tumbling mode
this.stateMachine = new StateMachinesExecutor(this.runtime);
this.stateMachine.Start();
}
private async Task FetchTransactionDetails(WalletId walletId, WalletPSBTReadyViewModel vm, BTCPayNetwork network)
{
var psbtObject = PSBT.Parse(vm.PSBT, network.NBitcoinNetwork);
IHDKey signingKey = null;
RootedKeyPath signingKeyPath = null;
try
{
signingKey = new BitcoinExtPubKey(vm.SigningKey, network.NBitcoinNetwork);
}
catch { }
try
{
signingKey = signingKey ?? new BitcoinExtKey(vm.SigningKey, network.NBitcoinNetwork);
}
catch { }
try
{
signingKeyPath = RootedKeyPath.Parse(vm.SigningKeyPath);
}
catch { }
var derivationSchemeSettings = await GetDerivationSchemeSettings(walletId);
if (signingKey == null || signingKeyPath == null)
{
var signingKeySettings = derivationSchemeSettings.GetSigningAccountKeySettings();
if (signingKey == null)
{
signingKey = signingKeySettings.AccountKey;
vm.SigningKey = signingKey.ToString();
}
if (vm.SigningKeyPath == null)
{
signingKeyPath = signingKeySettings.GetRootedKeyPath();
vm.SigningKeyPath = signingKeyPath?.ToString();
}
}
if (psbtObject.IsAllFinalized())
{
vm.CanCalculateBalance = false;
}
else
{
var balanceChange = psbtObject.GetBalance(derivationSchemeSettings.AccountDerivation, signingKey, signingKeyPath);
vm.BalanceChange = ValueToString(balanceChange, network);
vm.CanCalculateBalance = true;
vm.Positive = balanceChange >= Money.Zero;
}
foreach (var output in psbtObject.Outputs)
{
var dest = new WalletPSBTReadyViewModel.DestinationViewModel();
vm.Destinations.Add(dest);
var mine = output.HDKeysFor(derivationSchemeSettings.AccountDerivation, signingKey, signingKeyPath).Any();
var balanceChange2 = output.Value;
if (!mine)
{
balanceChange2 = -balanceChange2;
}
dest.Balance = ValueToString(balanceChange2, network);
dest.Positive = balanceChange2 >= Money.Zero;
dest.Destination = output.ScriptPubKey.GetDestinationAddress(network.NBitcoinNetwork)?.ToString() ?? output.ScriptPubKey.ToString();
}
if (psbtObject.TryGetFee(out var fee))
{
vm.Destinations.Add(new WalletPSBTReadyViewModel.DestinationViewModel()
{
Positive = false,
Balance = ValueToString(-fee, network),
Destination = "Mining fees"
});
}
if (psbtObject.TryGetEstimatedFeeRate(out var feeRate))
{
vm.FeeRate = feeRate.ToString();
}
if (!psbtObject.IsAllFinalized() && !psbtObject.TryFinalize(out var errors))
{
vm.SetErrors(errors);
}
}
private void CreateCoin(TransactionBuilder builder, List <Transaction> knownTransactions, ScriptPubKeyType addressType, Money money, BitcoinExtPubKey xpub, string path)
{
var pubkey = xpub.Derive(new KeyPath(path)).ExtPubKey.PubKey;
if (addressType == ScriptPubKeyType.Legacy)
{
var prevTx = xpub.Network.CreateTransaction();
prevTx.Inputs.Add(RandomOutpoint(), new Key().ScriptPubKey);
var txout = prevTx.Outputs.Add(money, pubkey.GetScriptPubKey(addressType));
var coin = new Coin(new OutPoint(prevTx, 0), txout);
builder.AddCoins(coin);
knownTransactions.Add(prevTx);
}
if (addressType == ScriptPubKeyType.Segwit)
{
var outpoint = RandomOutpoint();
var txout = xpub.Network.Consensus.ConsensusFactory.CreateTxOut();
txout.Value = money;
txout.ScriptPubKey = pubkey.GetScriptPubKey(addressType);
var coin = new Coin(outpoint, txout);
builder.AddCoins(coin);
}
if (addressType == ScriptPubKeyType.SegwitP2SH)
{
var outpoint = RandomOutpoint();
var txout = xpub.Network.Consensus.ConsensusFactory.CreateTxOut();
txout.Value = money;
txout.ScriptPubKey = pubkey.GetScriptPubKey(addressType);
var coin = new Coin(outpoint, txout).ToScriptCoin(pubkey.GetScriptPubKey(ScriptPubKeyType.Segwit));
builder.AddCoins(coin);
}
}
private async Task FetchTransactionDetails(DerivationSchemeSettings derivationSchemeSettings, WalletPSBTReadyViewModel vm, BTCPayNetwork network)
{
var psbtObject = PSBT.Parse(vm.PSBT, network.NBitcoinNetwork);
if (!psbtObject.IsAllFinalized())
{
psbtObject = await ExplorerClientProvider.UpdatePSBT(derivationSchemeSettings, psbtObject) ?? psbtObject;
}
IHDKey signingKey = null;
RootedKeyPath signingKeyPath = null;
try
{
signingKey = new BitcoinExtPubKey(vm.SigningKey, network.NBitcoinNetwork);
}
catch { }
try
{
signingKey = signingKey ?? new BitcoinExtKey(vm.SigningKey, network.NBitcoinNetwork);
}
catch { }
try
{
signingKeyPath = RootedKeyPath.Parse(vm.SigningKeyPath);
}
catch { }
if (signingKey == null || signingKeyPath == null)
{
var signingKeySettings = derivationSchemeSettings.GetSigningAccountKeySettings();
if (signingKey == null)
{
signingKey = signingKeySettings.AccountKey;
vm.SigningKey = signingKey.ToString();
}
if (vm.SigningKeyPath == null)
{
signingKeyPath = signingKeySettings.GetRootedKeyPath();
vm.SigningKeyPath = signingKeyPath?.ToString();
}
}
if (psbtObject.IsAllFinalized())
{
vm.CanCalculateBalance = false;
}
else
{
var balanceChange = psbtObject.GetBalance(derivationSchemeSettings.AccountDerivation, signingKey, signingKeyPath);
vm.BalanceChange = ValueToString(balanceChange, network);
vm.CanCalculateBalance = true;
vm.Positive = balanceChange >= Money.Zero;
}
vm.Inputs = new List <WalletPSBTReadyViewModel.InputViewModel>();
foreach (var input in psbtObject.Inputs)
{
var inputVm = new WalletPSBTReadyViewModel.InputViewModel();
vm.Inputs.Add(inputVm);
var mine = input.HDKeysFor(derivationSchemeSettings.AccountDerivation, signingKey, signingKeyPath).Any();
var balanceChange2 = input.GetTxOut()?.Value ?? Money.Zero;
if (mine)
{
balanceChange2 = -balanceChange2;
}
inputVm.BalanceChange = ValueToString(balanceChange2, network);
inputVm.Positive = balanceChange2 >= Money.Zero;
inputVm.Index = (int)input.Index;
}
vm.Destinations = new List <WalletPSBTReadyViewModel.DestinationViewModel>();
foreach (var output in psbtObject.Outputs)
{
var dest = new WalletPSBTReadyViewModel.DestinationViewModel();
vm.Destinations.Add(dest);
var mine = output.HDKeysFor(derivationSchemeSettings.AccountDerivation, signingKey, signingKeyPath).Any();
var balanceChange2 = output.Value;
if (!mine)
{
balanceChange2 = -balanceChange2;
}
dest.Balance = ValueToString(balanceChange2, network);
dest.Positive = balanceChange2 >= Money.Zero;
dest.Destination = output.ScriptPubKey.GetDestinationAddress(network.NBitcoinNetwork)?.ToString() ?? output.ScriptPubKey.ToString();
}
if (psbtObject.TryGetFee(out var fee))
{
vm.Destinations.Add(new WalletPSBTReadyViewModel.DestinationViewModel()
{
Positive = false,
Balance = ValueToString(-fee, network),
Destination = "Mining fees"
});
}
if (psbtObject.TryGetEstimatedFeeRate(out var feeRate))
{
vm.FeeRate = feeRate.ToString();
}
var sanityErrors = psbtObject.CheckSanity();
if (sanityErrors.Count != 0)
{
vm.SetErrors(sanityErrors);
}
else if (!psbtObject.IsAllFinalized() && !psbtObject.TryFinalize(out var errors))
{
vm.SetErrors(errors);
}
}
/// <summary>
/// WARNING: ONLY CHECKS CONFIRMED KEYPATHS
/// </summary>
public static IEnumerable <BitcoinWitPubKeyAddress> GetUnusedBech32Keys(int count, bool isInternal, BitcoinExtPubKey bitcoinExtPubKey, IEnumerable <FilterModel> filters)
{
var change = isInternal ? 1 : 0;
var filterArray = filters.ToArray();
var startingKey = 0; // Where to start getting keys one by one.
int i = 0;
while (true)
{
if (Match(bitcoinExtPubKey, change, i, filterArray, out _))
{
startingKey = i + 1;
if (i == 0)
{
i = 1;
}
else
{
i *= 2;
}
}
else
{
break;
}
}
i = startingKey;
int returnedNum = 0;
while (true)
{
if (!Match(bitcoinExtPubKey, change, i, filterArray, out PubKey pubKey))
{
yield return(pubKey.GetSegwitAddress(bitcoinExtPubKey.Network));
returnedNum++;
if (returnedNum >= count)
{
yield break;
}
}
i++;
}
}
/// <inheritdoc />
public async Task TumbleAsync(string originWalletName, string destinationWalletName, string originWalletPassword)
{
// Make sure it won't start new tumbling round if already started
if (this.State == TumbleState.Tumbling)
{
this.logger.LogDebug("Tumbler is already running");
throw new Exception("Tumbling is already running");
}
this.tumblingState.TumblerUri = new Uri(this.TumblerAddress);
// Check if in initial block download
if (!this.chain.IsDownloaded())
{
this.logger.LogDebug("Chain is still being downloaded: " + this.chain.Tip);
throw new Exception("Chain is still being downloaded");
}
Wallet destinationWallet = this.walletManager.GetWallet(destinationWalletName);
Wallet originWallet = this.walletManager.GetWallet(originWalletName);
// Check if origin wallet has a balance
WalletBalanceModel model = new WalletBalanceModel();
var originWalletAccounts = this.walletManager.GetAccounts(originWallet.Name).ToList();
var originConfirmed = new Money(0);
var originUnconfirmed = new Money(0);
foreach (var originAccount in originWallet.GetAccountsByCoinType(this.tumblingState.CoinType))
{
var result = originAccount.GetSpendableAmount();
originConfirmed += result.ConfirmedAmount;
originUnconfirmed += result.UnConfirmedAmount;
}
// Should ideally take network transaction fee into account too, but that is dynamic
if ((originConfirmed + originUnconfirmed) <= (this.TumblerParameters.Denomination + this.TumblerParameters.Fee))
{
this.logger.LogDebug("Insufficient funds in origin wallet");
throw new Exception("Insufficient funds in origin wallet");
}
// TODO: Check if password is valid before starting any cycles
// Update the state and save
this.tumblingState.DestinationWallet = destinationWallet ?? throw new Exception($"Destination wallet not found. Have you created a wallet with name {destinationWalletName}?");
this.tumblingState.DestinationWalletName = destinationWalletName;
this.tumblingState.OriginWallet = originWallet ?? throw new Exception($"Origin wallet not found. Have you created a wallet with name {originWalletName}?");
this.tumblingState.OriginWalletName = originWalletName;
this.tumblingState.OriginWalletPassword = originWalletPassword;
var accounts = this.tumblingState.DestinationWallet.GetAccountsByCoinType(this.tumblingState.CoinType);
// TODO: Possibly need to preserve destination account name in tumbling state. Default to first account for now
string accountName = null;
foreach (var account in accounts)
{
if (account.Index == 0)
{
accountName = account.Name;
}
}
var destAccount = this.tumblingState.DestinationWallet.GetAccountByCoinType(accountName, this.tumblingState.CoinType);
var key = destAccount.ExtendedPubKey;
var keyPath = new KeyPath("0");
// Stop and dispose onlymonitor
if (this.broadcasterJob != null && this.broadcasterJob.Started)
{
await this.broadcasterJob.Stop().ConfigureAwait(false);
}
this.runtime?.Dispose();
var config = new FullNodeTumblerClientConfiguration(this.tumblingState, onlyMonitor: false);
this.runtime = await TumblerClientRuntime.FromConfigurationAsync(config).ConfigureAwait(false);
var extPubKey = new BitcoinExtPubKey(key, this.runtime.Network);
if (key != null)
{
this.runtime.DestinationWallet =
new ClientDestinationWallet(extPubKey, keyPath, this.runtime.Repository, this.runtime.Network);
}
this.TumblerParameters = this.runtime.TumblerParameters;
// Run onlymonitor mode
this.broadcasterJob = this.runtime.CreateBroadcasterJob();
this.broadcasterJob.Start();
// Run tumbling mode
this.stateMachine = new StateMachinesExecutor(this.runtime);
this.stateMachine.Start();
this.State = TumbleState.Tumbling;
return;
}
public async Task <IActionResult> VaultBridgeConnection(string cryptoCode = null,
[ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId = null)
{
if (!HttpContext.WebSockets.IsWebSocketRequest)
{
return(NotFound());
}
cryptoCode = cryptoCode ?? walletId.CryptoCode;
using (var cts = new CancellationTokenSource(TimeSpan.FromMinutes(10)))
{
var cancellationToken = cts.Token;
var network = Networks.GetNetwork <BTCPayNetwork>(cryptoCode);
if (network == null)
{
return(NotFound());
}
var websocket = await HttpContext.WebSockets.AcceptWebSocketAsync();
var hwi = new Hwi.HwiClient(network.NBitcoinNetwork)
{
Transport = new HwiWebSocketTransport(websocket)
};
Hwi.HwiDeviceClient device = null;
HwiEnumerateEntry deviceEntry = null;
HDFingerprint? fingerprint = null;
string password = null;
int? pin = null;
var websocketHelper = new WebSocketHelper(websocket);
async Task <bool> RequireDeviceUnlocking()
{
if (deviceEntry == null)
{
await websocketHelper.Send("{ \"error\": \"need-device\"}", cancellationToken);
return(true);
}
if (deviceEntry.NeedsPinSent is true && pin is null)
{
await websocketHelper.Send("{ \"error\": \"need-pin\"}", cancellationToken);
return(true);
}
if (deviceEntry.NeedsPassphraseSent is true && password == null)
{
await websocketHelper.Send("{ \"error\": \"need-passphrase\"}", cancellationToken);
return(true);
}
return(false);
}
JObject o = null;
try
{
while (true)
{
var command = await websocketHelper.NextMessageAsync(cancellationToken);
switch (command)
{
case "set-passphrase":
device.Password = await websocketHelper.NextMessageAsync(cancellationToken);
password = device.Password;
break;
case "ask-sign":
if (await RequireDeviceUnlocking())
{
continue;
}
if (walletId == null)
{
await websocketHelper.Send("{ \"error\": \"invalid-walletId\"}", cancellationToken);
continue;
}
if (fingerprint is null)
{
fingerprint = (await device.GetXPubAsync(new KeyPath("44'"), cancellationToken)).ExtPubKey.ParentFingerprint;
}
await websocketHelper.Send("{ \"info\": \"ready\"}", cancellationToken);
o = JObject.Parse(await websocketHelper.NextMessageAsync(cancellationToken));
var authorization = await _authorizationService.AuthorizeAsync(User, Policies.CanModifyStoreSettings.Key);
if (!authorization.Succeeded)
{
await websocketHelper.Send("{ \"error\": \"not-authorized\"}", cancellationToken);
continue;
}
var psbt = PSBT.Parse(o["psbt"].Value <string>(), network.NBitcoinNetwork);
var derivationSettings = GetDerivationSchemeSettings(walletId);
derivationSettings.RebaseKeyPaths(psbt);
var signing = derivationSettings.GetSigningAccountKeySettings();
if (signing.GetRootedKeyPath()?.MasterFingerprint != fingerprint)
{
await websocketHelper.Send("{ \"error\": \"wrong-wallet\"}", cancellationToken);
continue;
}
try
{
psbt = await device.SignPSBTAsync(psbt, cancellationToken);
}
catch (Hwi.HwiException)
{
await websocketHelper.Send("{ \"error\": \"user-reject\"}", cancellationToken);
continue;
}
o = new JObject();
o.Add("psbt", psbt.ToBase64());
await websocketHelper.Send(o.ToString(), cancellationToken);
break;
case "ask-pin":
if (device == null)
{
await websocketHelper.Send("{ \"error\": \"need-device\"}", cancellationToken);
continue;
}
await device.PromptPinAsync(cancellationToken);
await websocketHelper.Send("{ \"info\": \"prompted, please input the pin\"}", cancellationToken);
pin = int.Parse(await websocketHelper.NextMessageAsync(cancellationToken), CultureInfo.InvariantCulture);
if (await device.SendPinAsync(pin.Value, cancellationToken))
{
await websocketHelper.Send("{ \"info\": \"the pin is correct\"}", cancellationToken);
}
else
{
await websocketHelper.Send("{ \"error\": \"incorrect-pin\"}", cancellationToken);
continue;
}
break;
case "ask-xpubs":
if (await RequireDeviceUnlocking())
{
continue;
}
JObject result = new JObject();
var factory = network.NBXplorerNetwork.DerivationStrategyFactory;
var keyPath = new KeyPath("84'").Derive(network.CoinType).Derive(0, true);
BitcoinExtPubKey xpub = await device.GetXPubAsync(keyPath);
if (fingerprint is null)
{
fingerprint = (await device.GetXPubAsync(new KeyPath("44'"), cancellationToken)).ExtPubKey.ParentFingerprint;
}
result["fingerprint"] = fingerprint.Value.ToString();
var strategy = factory.CreateDirectDerivationStrategy(xpub, new DerivationStrategyOptions()
{
ScriptPubKeyType = ScriptPubKeyType.Segwit
});
AddDerivationSchemeToJson("segwit", result, keyPath, xpub, strategy);
keyPath = new KeyPath("49'").Derive(network.CoinType).Derive(0, true);
xpub = await device.GetXPubAsync(keyPath);
strategy = factory.CreateDirectDerivationStrategy(xpub, new DerivationStrategyOptions()
{
ScriptPubKeyType = ScriptPubKeyType.SegwitP2SH
});
AddDerivationSchemeToJson("segwitWrapped", result, keyPath, xpub, strategy);
keyPath = new KeyPath("44'").Derive(network.CoinType).Derive(0, true);
xpub = await device.GetXPubAsync(keyPath);
strategy = factory.CreateDirectDerivationStrategy(xpub, new DerivationStrategyOptions()
{
ScriptPubKeyType = ScriptPubKeyType.Legacy
});
AddDerivationSchemeToJson("legacy", result, keyPath, xpub, strategy);
await websocketHelper.Send(result.ToString(), cancellationToken);
break;
case "ask-device":
password = null;
pin = null;
deviceEntry = null;
device = null;
var entries = (await hwi.EnumerateEntriesAsync(cancellationToken)).ToList();
deviceEntry = entries.FirstOrDefault();
if (deviceEntry == null)
{
await websocketHelper.Send("{ \"error\": \"no-device\"}", cancellationToken);
continue;
}
device = new HwiDeviceClient(hwi, deviceEntry.DeviceSelector, deviceEntry.Model, deviceEntry.Fingerprint);
fingerprint = device.Fingerprint;
JObject json = new JObject();
json.Add("model", device.Model.ToString());
json.Add("fingerprint", device.Fingerprint?.ToString());
await websocketHelper.Send(json.ToString(), cancellationToken);
break;
}
}
}
catch (Exception ex)
{
JObject obj = new JObject();
obj.Add("error", "unknown-error");
obj.Add("details", ex.ToString());
try
{
await websocketHelper.Send(obj.ToString(), cancellationToken);
}
catch { }
}
finally
{
await websocketHelper.DisposeAsync(cancellationToken);
}
}
return(new EmptyResult());
}
private void AddDerivationSchemeToJson(string propertyName, JObject result, KeyPath keyPath, BitcoinExtPubKey xpub, DerivationStrategyBase strategy)
{
result.Add(new JProperty(propertyName, new JObject()
{
new JProperty("strategy", strategy.ToString()),
new JProperty("accountKey", xpub.ToString()),
new JProperty("keyPath", keyPath.ToString()),
}));
}
/// <summary>
/// Create a taproot signature derivation strategy from public key
/// </summary>
/// <param name="publicKey">The public key of the wallet</param>
/// <param name="options">Derivation options</param>
/// <returns></returns>
public TaprootDerivationStrategy CreateTaprootDerivationStrategy(BitcoinExtPubKey publicKey, ReadOnlyDictionary <string, bool> options = null)
{
return(new TaprootDerivationStrategy(publicKey, options));
}
/// <summary>
/// Create a new wallet P2PKH with one key
/// </summary>
/// <param name="rootKey"></param>
/// <param name="keyPoolSize"></param>
public Wallet(BitcoinExtPubKey rootKey, int keyPoolSize = 500)
#pragma warning disable CS0612 // Type or member is obsolete
: this(new WalletCreation(rootKey), keyPoolSize)
#pragma warning restore CS0612 // Type or member is obsolete
{
}
public DerivationStrategyBase Parse(string str)
{
if (str == null)
{
throw new ArgumentNullException(nameof(str));
}
str = str.Trim();
HashSet <string> hintedLabels = new HashSet <string>();
var hintDestination = HintScriptPubKey?.GetDestination();
if (hintDestination != null)
{
if (hintDestination is KeyId)
{
hintedLabels.Add("legacy");
}
if (hintDestination is ScriptId)
{
hintedLabels.Add("p2sh");
}
}
if (!Network.Consensus.SupportSegwit)
{
hintedLabels.Add("legacy");
}
try
{
var result = BtcPayNetwork.NBXplorerNetwork.DerivationStrategyFactory.Parse(str);
return(FindMatch(hintedLabels, result));
}
catch
{
}
var parts = str.Split('-');
bool hasLabel = false;
for (int i = 0; i < parts.Length; i++)
{
if (IsLabel(parts[i]))
{
if (!hasLabel)
{
hintedLabels.Clear();
if (!Network.Consensus.SupportSegwit)
{
hintedLabels.Add("legacy");
}
}
hasLabel = true;
hintedLabels.Add(parts[i].Substring(1, parts[i].Length - 2).ToLowerInvariant());
continue;
}
try
{
var data = Network.GetBase58CheckEncoder().DecodeData(parts[i]);
if (data.Length < 4)
{
continue;
}
var prefix = Utils.ToUInt32(data, false);
var standardPrefix = Utils.ToBytes(0x0488b21eU, false);
for (int ii = 0; ii < 4; ii++)
{
data[ii] = standardPrefix[ii];
}
var derivationScheme = new BitcoinExtPubKey(Network.GetBase58CheckEncoder().EncodeData(data), Network.Main).ToNetwork(Network).ToString();
if (BtcPayNetwork.ElectrumMapping.TryGetValue(prefix, out var type))
{
switch (type)
{
case DerivationType.Legacy:
hintedLabels.Add("legacy");
break;
case DerivationType.SegwitP2SH:
hintedLabels.Add("p2sh");
break;
}
}
parts[i] = derivationScheme;
}
catch { continue; }
}
if (hintDestination != null)
{
if (hintDestination is WitKeyId)
{
hintedLabels.Remove("legacy");
hintedLabels.Remove("p2sh");
}
}
str = string.Join('-', parts.Where(p => !IsLabel(p)));
foreach (var label in hintedLabels)
{
str = $"{str}-[{label}]";
}
return(FindMatch(hintedLabels, BtcPayNetwork.NBXplorerNetwork.DerivationStrategyFactory.Parse(str)));
}
/// <summary>
/// Create a new wallet P2PKH with one key
/// </summary>
/// <param name="rootKey"></param>
/// <param name="keyPoolSize"></param>
public Wallet(BitcoinExtPubKey rootKey, int keyPoolSize = 500)
: this(new WalletCreation(rootKey), keyPoolSize)
{
}
/// <summary>
/// Create a new wallet P2PKH with one key
/// </summary>
/// <param name="rootKey"></param>
/// <param name="keyPoolSize"></param>
public Wallet(BitcoinExtPubKey rootKey, int keyPoolSize = 500)
: this(new WalletCreation(rootKey), keyPoolSize)
{
}
public KeyPair(ExtPubKey pubKey)
{
PubKey = new BitcoinExtPubKey(pubKey, Network.TestNet);
Address = PubKey.ScriptPubKey.GetDestinationAddress(Network.TestNet);
}
public async Task <IActionResult> VaultBridgeConnection(string cryptoCode = null,
[ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId = null)
{
if (!HttpContext.WebSockets.IsWebSocketRequest)
{
return(NotFound());
}
cryptoCode = cryptoCode ?? walletId.CryptoCode;
bool versionChecked = false;
using (var cts = new CancellationTokenSource(TimeSpan.FromMinutes(10)))
{
var cancellationToken = cts.Token;
var network = Networks.GetNetwork <BTCPayNetwork>(cryptoCode);
if (network == null)
{
return(NotFound());
}
var websocket = await HttpContext.WebSockets.AcceptWebSocketAsync();
var hwi = new Hwi.HwiClient(network.NBitcoinNetwork)
{
Transport = new HwiWebSocketTransport(websocket)
};
Hwi.HwiDeviceClient device = null;
HwiEnumerateEntry deviceEntry = null;
HDFingerprint? fingerprint = null;
string password = null;
var websocketHelper = new WebSocketHelper(websocket);
async Task <bool> RequireDeviceUnlocking()
{
if (deviceEntry == null)
{
await websocketHelper.Send("{ \"error\": \"need-device\"}", cancellationToken);
return(true);
}
if (deviceEntry.Code is HwiErrorCode.DeviceNotInitialized)
{
await websocketHelper.Send("{ \"error\": \"need-initialized\"}", cancellationToken);
return(true);
}
if (deviceEntry.Code is HwiErrorCode.DeviceNotReady)
{
if (IsTrezorT(deviceEntry))
{
await websocketHelper.Send("{ \"error\": \"need-passphrase-on-device\"}", cancellationToken);
return(true);
}
else if (deviceEntry.NeedsPinSent is true)
{
await websocketHelper.Send("{ \"error\": \"need-pin\"}", cancellationToken);
return(true);
}
else if (deviceEntry.NeedsPassphraseSent is true && password is null)
{
await websocketHelper.Send("{ \"error\": \"need-passphrase\"}", cancellationToken);
return(true);
}
}
return(false);
}
JObject o = null;
try
{
while (true)
{
var command = await websocketHelper.NextMessageAsync(cancellationToken);
switch (command)
{
case "set-passphrase":
device.Password = await websocketHelper.NextMessageAsync(cancellationToken);
password = device.Password;
break;
case "ask-sign":
if (await RequireDeviceUnlocking())
{
continue;
}
if (walletId == null)
{
await websocketHelper.Send("{ \"error\": \"invalid-walletId\"}", cancellationToken);
continue;
}
if (fingerprint is null)
{
fingerprint = (await device.GetXPubAsync(new KeyPath("44'"), cancellationToken)).ExtPubKey.ParentFingerprint;
}
await websocketHelper.Send("{ \"info\": \"ready\"}", cancellationToken);
o = JObject.Parse(await websocketHelper.NextMessageAsync(cancellationToken));
var authorization = await _authorizationService.AuthorizeAsync(User, Policies.CanModifyStoreSettings);
if (!authorization.Succeeded)
{
await websocketHelper.Send("{ \"error\": \"not-authorized\"}", cancellationToken);
continue;
}
var psbt = PSBT.Parse(o["psbt"].Value <string>(), network.NBitcoinNetwork);
var derivationSettings = GetDerivationSchemeSettings(walletId);
derivationSettings.RebaseKeyPaths(psbt);
var signing = derivationSettings.GetSigningAccountKeySettings();
if (signing.GetRootedKeyPath()?.MasterFingerprint != fingerprint)
{
await websocketHelper.Send("{ \"error\": \"wrong-wallet\"}", cancellationToken);
continue;
}
var signableInputs = psbt.Inputs
.SelectMany(i => i.HDKeyPaths)
.Where(i => i.Value.MasterFingerprint == fingerprint)
.ToArray();
if (signableInputs.Length > 0)
{
var actualPubKey = (await device.GetXPubAsync(signableInputs[0].Value.KeyPath)).GetPublicKey();
if (actualPubKey != signableInputs[0].Key)
{
await websocketHelper.Send("{ \"error\": \"wrong-keypath\"}", cancellationToken);
continue;
}
}
try
{
psbt = await device.SignPSBTAsync(psbt, cancellationToken);
}
catch (Hwi.HwiException)
{
await websocketHelper.Send("{ \"error\": \"user-reject\"}", cancellationToken);
continue;
}
o = new JObject();
o.Add("psbt", psbt.ToBase64());
await websocketHelper.Send(o.ToString(), cancellationToken);
break;
case "display-address":
if (await RequireDeviceUnlocking())
{
continue;
}
var k = RootedKeyPath.Parse(await websocketHelper.NextMessageAsync(cancellationToken));
await device.DisplayAddressAsync(GetScriptPubKeyType(k), k.KeyPath, cancellationToken);
await websocketHelper.Send("{ \"info\": \"ok\"}", cancellationToken);
break;
case "ask-pin":
if (device == null)
{
await websocketHelper.Send("{ \"error\": \"need-device\"}", cancellationToken);
continue;
}
try
{
await device.PromptPinAsync(cancellationToken);
}
catch (HwiException ex) when(ex.ErrorCode == HwiErrorCode.DeviceAlreadyUnlocked)
{
await websocketHelper.Send("{ \"error\": \"device-already-unlocked\"}", cancellationToken);
continue;
}
await websocketHelper.Send("{ \"info\": \"prompted, please input the pin\"}", cancellationToken);
var pin = int.Parse(await websocketHelper.NextMessageAsync(cancellationToken), CultureInfo.InvariantCulture);
if (await device.SendPinAsync(pin, cancellationToken))
{
goto askdevice;
}
else
{
await websocketHelper.Send("{ \"error\": \"incorrect-pin\"}", cancellationToken);
continue;
}
case "ask-xpub":
if (await RequireDeviceUnlocking())
{
continue;
}
await websocketHelper.Send("{ \"info\": \"ok\"}", cancellationToken);
var askedXpub = JObject.Parse(await websocketHelper.NextMessageAsync(cancellationToken));
var addressType = askedXpub["addressType"].Value <string>();
var accountNumber = askedXpub["accountNumber"].Value <int>();
JObject result = new JObject();
var factory = network.NBXplorerNetwork.DerivationStrategyFactory;
if (fingerprint is null)
{
fingerprint = (await device.GetXPubAsync(new KeyPath("44'"), cancellationToken)).ExtPubKey.ParentFingerprint;
}
result["fingerprint"] = fingerprint.Value.ToString();
DerivationStrategyBase strategy = null;
KeyPath keyPath = null;
BitcoinExtPubKey xpub = null;
if (!network.NBitcoinNetwork.Consensus.SupportSegwit && addressType != "legacy")
{
await websocketHelper.Send("{ \"error\": \"segwit-notsupported\"}", cancellationToken);
continue;
}
if (addressType == "segwit")
{
keyPath = new KeyPath("84'").Derive(network.CoinType).Derive(accountNumber, true);
xpub = await device.GetXPubAsync(keyPath);
strategy = factory.CreateDirectDerivationStrategy(xpub, new DerivationStrategyOptions()
{
ScriptPubKeyType = ScriptPubKeyType.Segwit
});
}
else if (addressType == "segwitWrapped")
{
keyPath = new KeyPath("49'").Derive(network.CoinType).Derive(accountNumber, true);
xpub = await device.GetXPubAsync(keyPath);
strategy = factory.CreateDirectDerivationStrategy(xpub, new DerivationStrategyOptions()
{
ScriptPubKeyType = ScriptPubKeyType.SegwitP2SH
});
}
else if (addressType == "legacy")
{
keyPath = new KeyPath("44'").Derive(network.CoinType).Derive(accountNumber, true);
xpub = await device.GetXPubAsync(keyPath);
strategy = factory.CreateDirectDerivationStrategy(xpub, new DerivationStrategyOptions()
{
ScriptPubKeyType = ScriptPubKeyType.Legacy
});
}
else
{
await websocketHelper.Send("{ \"error\": \"invalid-addresstype\"}", cancellationToken);
continue;
}
result.Add(new JProperty("strategy", strategy.ToString()));
result.Add(new JProperty("accountKey", xpub.ToString()));
result.Add(new JProperty("keyPath", keyPath.ToString()));
await websocketHelper.Send(result.ToString(), cancellationToken);
break;
case "ask-passphrase":
if (command == "ask-passphrase")
{
if (deviceEntry == null)
{
await websocketHelper.Send("{ \"error\": \"need-device\"}", cancellationToken);
continue;
}
// The make the trezor T ask for password
await device.GetXPubAsync(new KeyPath("44'"), cancellationToken);
}
goto askdevice;
case "ask-device":
askdevice:
if (!versionChecked)
{
var version = await hwi.GetVersionAsync(cancellationToken);
if (version.Major < 2)
{
await websocketHelper.Send("{ \"error\": \"vault-outdated\"}", cancellationToken);
continue;
}
versionChecked = true;
}
password = null;
deviceEntry = null;
device = null;
var entries = (await hwi.EnumerateEntriesAsync(cancellationToken)).ToList();
deviceEntry = entries.FirstOrDefault();
if (deviceEntry == null)
{
await websocketHelper.Send("{ \"error\": \"no-device\"}", cancellationToken);
continue;
}
device = new HwiDeviceClient(hwi, deviceEntry.DeviceSelector, deviceEntry.Model, deviceEntry.Fingerprint);
fingerprint = device.Fingerprint;
JObject json = new JObject();
json.Add("model", device.Model.ToString());
json.Add("fingerprint", device.Fingerprint?.ToString());
await websocketHelper.Send(json.ToString(), cancellationToken);
break;
}
}
}
catch (FormatException ex)
{
JObject obj = new JObject();
obj.Add("error", "invalid-network");
obj.Add("details", ex.ToString());
try
{
await websocketHelper.Send(obj.ToString(), cancellationToken);
}
catch { }
}
catch (Exception ex)
{
JObject obj = new JObject();
obj.Add("error", "unknown-error");
obj.Add("message", ex.Message);
obj.Add("details", ex.ToString());
try
{
await websocketHelper.Send(obj.ToString(), cancellationToken);
}
catch { }
}
finally
{
await websocketHelper.DisposeAsync(cancellationToken);
}
}
return(new EmptyResult());
}
// Constructor
public WalletBase(BitcoinExtPubKey rootKey) : base(rootKey, 1000)
{
}
public BitcoinWallet(string extPubKeyString, bool isTestNetwork)
{
extPubKey = new BitcoinExtPubKey(extPubKeyString);
network = isTestNetwork ? Network.TestNet : Network.Main;
}
public abstract Task <PSBT> SignTransactionAsync(PSBT psbt, RootedKeyPath accountKeyPath, BitcoinExtPubKey accountKey, Script changeHint, CancellationToken cancellationToken);
public async Task <IActionResult> UpdateWallet(WalletSetupViewModel vm)
{
var checkResult = IsAvailable(vm.CryptoCode, out var store, out var network);
if (checkResult != null)
{
return(checkResult);
}
vm.Network = network;
DerivationSchemeSettings strategy = null;
var wallet = _WalletProvider.GetWallet(network);
if (wallet == null)
{
return(NotFound());
}
if (vm.WalletFile != null)
{
if (!DerivationSchemeSettings.TryParseFromWalletFile(await ReadAllText(vm.WalletFile), network, out strategy))
{
ModelState.AddModelError(nameof(vm.WalletFile), "Wallet file was not in the correct format");
return(View(vm.ViewName, vm));
}
}
else if (!string.IsNullOrEmpty(vm.WalletFileContent))
{
if (!DerivationSchemeSettings.TryParseFromWalletFile(vm.WalletFileContent, network, out strategy))
{
ModelState.AddModelError(nameof(vm.WalletFileContent), "QR import was not in the correct format");
return(View(vm.ViewName, vm));
}
}
else if (!string.IsNullOrEmpty(vm.DerivationScheme))
{
try
{
strategy = ParseDerivationStrategy(vm.DerivationScheme, network);
strategy.Source = "ManualDerivationScheme";
if (!string.IsNullOrEmpty(vm.AccountKey))
{
var accountKey = new BitcoinExtPubKey(vm.AccountKey, network.NBitcoinNetwork);
var accountSettings =
strategy.AccountKeySettings.FirstOrDefault(a => a.AccountKey == accountKey);
if (accountSettings != null)
{
accountSettings.AccountKeyPath =
vm.KeyPath == null ? null : KeyPath.Parse(vm.KeyPath);
accountSettings.RootFingerprint = string.IsNullOrEmpty(vm.RootFingerprint)
? (HDFingerprint?)null
: new HDFingerprint(
NBitcoin.DataEncoders.Encoders.Hex.DecodeData(vm.RootFingerprint));
}
}
vm.DerivationScheme = strategy.AccountDerivation.ToString();
ModelState.Remove(nameof(vm.DerivationScheme));
}
catch
{
ModelState.AddModelError(nameof(vm.DerivationScheme), "Invalid wallet format");
return(View(vm.ViewName, vm));
}
}
else if (!string.IsNullOrEmpty(vm.Config))
{
if (!DerivationSchemeSettings.TryParseFromJson(UnprotectString(vm.Config), network, out strategy))
{
ModelState.AddModelError(nameof(vm.Config), "Config file was not in the correct format");
return(View(vm.ViewName, vm));
}
}
if (strategy is null)
{
ModelState.AddModelError(nameof(vm.DerivationScheme), "Please provide your extended public key");
return(View(vm.ViewName, vm));
}
vm.Config = ProtectString(strategy.ToJson());
ModelState.Remove(nameof(vm.Config));
PaymentMethodId paymentMethodId = new PaymentMethodId(network.CryptoCode, PaymentTypes.BTCLike);
var storeBlob = store.GetStoreBlob();
if (vm.Confirmation)
{
try
{
await wallet.TrackAsync(strategy.AccountDerivation);
store.SetSupportedPaymentMethod(paymentMethodId, strategy);
storeBlob.SetExcluded(paymentMethodId, false);
storeBlob.PayJoinEnabled = strategy.IsHotWallet && !(vm.SetupRequest?.PayJoinEnabled is false);
store.SetStoreBlob(storeBlob);
}
catch
{
ModelState.AddModelError(nameof(vm.DerivationScheme), "Invalid derivation scheme");
return(View(vm.ViewName, vm));
}
await _Repo.UpdateStore(store);
_EventAggregator.Publish(new WalletChangedEvent {
WalletId = new WalletId(vm.StoreId, vm.CryptoCode)
});
TempData[WellKnownTempData.SuccessMessage] = $"Wallet settings for {network.CryptoCode} have been updated.";
// This is success case when derivation scheme is added to the store
return(RedirectToAction(nameof(WalletSettings), new { storeId = vm.StoreId, cryptoCode = vm.CryptoCode }));
}
return(ConfirmAddresses(vm, strategy));
}
public async Task <FileContentResult> Sync(
[ModelBinder(BinderType = typeof(DestinationModelBinder))]
BitcoinExtPubKey extPubKey,
[ModelBinder(BinderType = typeof(UInt256ModelBinding))]
uint256 lastBlockHash = null,
[ModelBinder(BinderType = typeof(UInt256ModelBinding))]
uint256 unconfirmedHash = null,
bool noWait = false)
{
lastBlockHash = lastBlockHash ?? uint256.Zero;
var actualLastBlockHash = uint256.Zero;
var waitingTransaction = noWait ? Task.FromResult(false) : WaitingTransaction(extPubKey);
Runtime.Repository.MarkAsUsed(new KeyInformation(extPubKey));
UTXOChanges changes = null;
UTXOChanges previousChanges = null;
List <TrackedTransaction> cleanList = null;
var getKeyPath = GetKeyPaths(extPubKey);
while (true)
{
cleanList = new List <TrackedTransaction>();
HashSet <uint256> conflictedUnconf = new HashSet <uint256>();
changes = new UTXOChanges();
List <AnnotatedTransaction> transactions = GetAnnotatedTransactions(extPubKey);
var unconf = transactions.Where(tx => tx.Height == MempoolHeight);
var conf = transactions.Where(tx => tx.Height != MempoolHeight);
conf = conf.TopologicalSort(DependsOn(conf.ToList())).ToList();
unconf = unconf.TopologicalSort(DependsOn(unconf.ToList())).ToList();
foreach (var item in conf.Concat(unconf))
{
var record = item.Record;
if (record.BlockHash == null)
{
if ( //A parent conflicted with the current utxo
record.Transaction.Inputs.Any(i => conflictedUnconf.Contains(i.PrevOut.Hash))
||
//Conflict with the confirmed utxo
changes.Confirmed.HasConflict(record.Transaction))
{
cleanList.Add(record);
conflictedUnconf.Add(record.Transaction.GetHash());
continue;
}
if (changes.Unconfirmed.HasConflict(record.Transaction))
{
Logs.Explorer.LogInformation($"Conflicts in the mempool. {record.Transaction.GetHash()} ignored");
continue;
}
changes.Unconfirmed.LoadChanges(record.Transaction, getKeyPath);
}
else
{
if (changes.Confirmed.HasConflict(record.Transaction))
{
Logs.Explorer.LogError("A conflict among confirmed transaction happened, this should be impossible");
throw new InvalidOperationException("The impossible happened");
}
changes.Unconfirmed.LoadChanges(record.Transaction, getKeyPath);
changes.Confirmed.LoadChanges(record.Transaction, getKeyPath);
changes.Confirmed.Hash = record.BlockHash;
actualLastBlockHash = record.BlockHash;
if (record.BlockHash == lastBlockHash)
{
previousChanges = changes.Clone();
}
}
}
changes.Unconfirmed = changes.Unconfirmed.Diff(changes.Confirmed);
changes.Unconfirmed.Hash = changes.Unconfirmed.GetHash();
if (changes.Unconfirmed.Hash == unconfirmedHash)
{
changes.Unconfirmed.Clear();
}
else
{
changes.Unconfirmed.Reset = true;
}
if (actualLastBlockHash == lastBlockHash)
{
changes.Confirmed.Clear();
}
else if (previousChanges != null)
{
changes.Confirmed.Reset = false;
changes.Confirmed = changes.Confirmed.Diff(previousChanges.Confirmed);
}
else
{
changes.Confirmed.Reset = true;
changes.Confirmed.SpentOutpoints.Clear();
}
if (changes.HasChanges || !(await waitingTransaction))
{
break;
}
waitingTransaction = Task.FromResult(false); //next time, will not wait
}
Runtime.Repository.CleanTransactions(extPubKey.ExtPubKey, cleanList);
return(new FileContentResult(changes.ToBytes(), "application/octet-stream"));
}