public static async Task <PSBT> SignTxAsync(HardwareWalletInfo hardwareWalletInfo, PSBT psbt)
{
var psbtString = psbt.ToBase64();
var networkString = Network == Network.Main ? "" : "--testnet";
JToken jtok = await SendCommandAsync($"{networkString} --device-type \"{hardwareWalletInfo.Type.ToString().ToLowerInvariant()}\" --device-path \"{hardwareWalletInfo.Path}\" signtx {psbtString}");
JObject json = jtok as JObject;
var signedPsbtString = json.Value <string>("psbt");
var signedPsbt = PSBT.Parse(signedPsbtString, Network);
signedPsbt.Finalize();
return(signedPsbt);
}
public async Task <WalletProcessPSBTResponse> WalletProcessPSBTAsync(PSBT psbt, bool sign = true, SigHash sighashType = SigHash.All, bool bip32derivs = false)
{
if (psbt == null)
{
throw new ArgumentNullException(nameof(psbt));
}
var response = await SendCommandAsync(RPCOperations.walletprocesspsbt, psbt.ToBase64(), sign, SigHashToString(sighashType), bip32derivs).ConfigureAwait(false);
var result = (JObject)response.Result;
var psbt2 = PSBT.Parse(result.Property("psbt").Value.Value <string>(), Network.Main);
var complete = result.Property("complete").Value.Value <bool>();
return(new WalletProcessPSBTResponse(psbt2, complete));
}
public async Task <PSBT> SignPSBTAsync(PSBT psbt, CancellationToken cancellationToken = default)
{
if (psbt == null)
{
throw new ArgumentNullException(nameof(psbt));
}
var psbtString = psbt.ToBase64();
var response = await SendCommandAsync(
command : HwiCommands.SignTx,
commandArguments : new string[] { psbtString },
cancellationToken : cancellationToken).ConfigureAwait(false);
return(HwiParser.ParsePsbt(response, HwiClient.Network));
}
private async Task <IActionResult> TryHandleSigningCommands(WalletId walletId, PSBT psbt, string command,
SigningContextModel signingContext, string actionBack)
{
signingContext.PSBT = psbt.ToBase64();
switch (command)
{
case "sign":
var routeBack = new Dictionary <string, string>
{
{ "action", actionBack }, { "walletId", walletId.ToString() }
};
return(View("WalletSigningOptions", new WalletSigningOptionsModel(signingContext, routeBack)));
case "vault":
return(ViewVault(walletId, signingContext));
case "seed":
return(SignWithSeed(walletId, signingContext));
case "nbx-seed":
if (await CanUseHotWallet())
{
var derivationScheme = GetDerivationSchemeSettings(walletId);
if (derivationScheme.IsHotWallet)
{
var extKey = await ExplorerClientProvider.GetExplorerClient(walletId.CryptoCode)
.GetMetadataAsync <string>(derivationScheme.AccountDerivation,
WellknownMetadataKeys.MasterHDKey);
return(SignWithSeed(walletId,
new SignWithSeedViewModel {
SeedOrKey = extKey, SigningContext = signingContext
}));
}
}
TempData.SetStatusMessageModel(new StatusMessageModel
{
Severity = StatusMessageModel.StatusSeverity.Error,
Message = "NBX seed functionality is not available"
});
break;
}
return(null);
}
private IActionResult RedirectToWalletPSBT(WalletId walletId, PSBT psbt, string fileName = null)
{
var vm = new PostRedirectViewModel()
{
AspController = "Wallets",
AspAction = nameof(WalletPSBT),
Parameters =
{
new KeyValuePair <string, string>("psbt", psbt.ToBase64())
}
};
if (!string.IsNullOrEmpty(fileName))
{
vm.Parameters.Add(new KeyValuePair <string, string>("fileName", fileName));
}
return(View("PostRedirect", vm));
}
private async Task <PSBT> SignTxImplAsync(HardwareWalletModels?deviceType, string devicePath, HDFingerprint?fingerprint, PSBT psbt, CancellationToken cancel)
{
var psbtString = psbt.ToBase64();
var response = await SendCommandAsync(
options : BuildOptions(deviceType, devicePath, fingerprint),
command : HwiCommands.SignTx,
commandArguments : psbtString,
openConsole : false,
cancel).ConfigureAwait(false);
PSBT signedPsbt = HwiParser.ParsePsbt(response, Network);
if (!signedPsbt.IsAllFinalized())
{
signedPsbt.Finalize();
}
return(signedPsbt);
}
public async Task <IActionResult> LedgerConnection(
[ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId,
string command,
// getinfo
// getxpub
int account = 0,
// sendtoaddress
string hintChange = null
)
{
if (!HttpContext.WebSockets.IsWebSocketRequest)
{
return(NotFound());
}
var storeData = CurrentStore;
var network = NetworkProvider.GetNetwork <BTCPayNetwork>(walletId.CryptoCode);
if (network == null)
{
throw new FormatException("Invalid value for crypto code");
}
PSBT psbt = GetAmbientPSBT(network.NBitcoinNetwork, true);
var derivationSettings = GetDerivationSchemeSettings(walletId);
var webSocket = await HttpContext.WebSockets.AcceptWebSocketAsync();
using (var normalOperationTimeout = new CancellationTokenSource())
using (var signTimeout = new CancellationTokenSource())
{
normalOperationTimeout.CancelAfter(TimeSpan.FromMinutes(30));
var hw = new LedgerHardwareWalletService(webSocket);
object result = null;
try
{
if (command == "test")
{
result = await hw.Test(normalOperationTimeout.Token);
}
if (command == "sendtoaddress")
{
if (!_dashboard.IsFullySynched(network.CryptoCode, out var summary))
{
throw new Exception($"{network.CryptoCode}: not started or fully synched");
}
var accountKey = derivationSettings.GetSigningAccountKeySettings();
// Some deployment does not have the AccountKeyPath set, let's fix this...
if (accountKey.AccountKeyPath == null)
{
// If the saved wallet key path is not present or incorrect, let's scan the wallet to see if it can sign strategy
var foundKeyPath = await hw.FindKeyPathFromDerivation(network,
derivationSettings.AccountDerivation,
normalOperationTimeout.Token);
accountKey.AccountKeyPath = foundKeyPath ?? throw new HardwareWalletException($"This store is not configured to use this ledger");
storeData.SetSupportedPaymentMethod(derivationSettings);
await Repository.UpdateStore(storeData);
}
// If it has already the AccountKeyPath, we did not looked up for it, so we need to check if we are on the right ledger
else
{
// Checking if ledger is right with the RootFingerprint is faster as it does not need to make a query to the parent xpub,
// but some deployment does not have it, so let's use AccountKeyPath instead
if (accountKey.RootFingerprint == null)
{
var actualPubKey = await hw.GetExtPubKey(network, accountKey.AccountKeyPath, normalOperationTimeout.Token);
if (!derivationSettings.AccountDerivation.GetExtPubKeys().Any(p => p.GetPublicKey() == actualPubKey.GetPublicKey()))
{
throw new HardwareWalletException($"This store is not configured to use this ledger");
}
}
// We have the root fingerprint, we can check the root from it
else
{
var actualPubKey = await hw.GetPubKey(network, new KeyPath(), normalOperationTimeout.Token);
if (actualPubKey.GetHDFingerPrint() != accountKey.RootFingerprint.Value)
{
throw new HardwareWalletException($"This store is not configured to use this ledger");
}
}
}
// Some deployment does not have the RootFingerprint set, let's fix this...
if (accountKey.RootFingerprint == null)
{
accountKey.RootFingerprint = (await hw.GetPubKey(network, new KeyPath(), normalOperationTimeout.Token)).GetHDFingerPrint();
storeData.SetSupportedPaymentMethod(derivationSettings);
await Repository.UpdateStore(storeData);
}
derivationSettings.RebaseKeyPaths(psbt);
var changeAddress = string.IsNullOrEmpty(hintChange) ? null : BitcoinAddress.Create(hintChange, network.NBitcoinNetwork);
signTimeout.CancelAfter(TimeSpan.FromMinutes(5));
psbt = await hw.SignTransactionAsync(psbt, accountKey.GetRootedKeyPath(), accountKey.AccountKey, changeAddress?.ScriptPubKey, signTimeout.Token);
SetAmbientPSBT(null);
result = new SendToAddressResult()
{
PSBT = psbt.ToBase64()
};
}
}
catch (OperationCanceledException)
{ result = new LedgerTestResult()
{
Success = false, Error = "Timeout"
}; }
catch (Exception ex)
{ result = new LedgerTestResult()
{
Success = false, Error = ex.Message
}; }
finally { hw.Dispose(); }
try
{
if (result != null)
{
UTF8Encoding UTF8NOBOM = new UTF8Encoding(false);
var bytes = UTF8NOBOM.GetBytes(JsonConvert.SerializeObject(result, _serializerSettings));
await webSocket.SendAsync(new ArraySegment <byte>(bytes), WebSocketMessageType.Text, true, new CancellationTokenSource(2000).Token);
}
}
catch { }
finally
{
await webSocket.CloseSocket();
}
}
return(new EmptyResult());
}
public async Task <IActionResult> WalletPSBTReady(
[ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId, WalletPSBTViewModel vm, string command, CancellationToken cancellationToken = default)
{
var network = NetworkProvider.GetNetwork <BTCPayNetwork>(walletId.CryptoCode);
PSBT psbt = await vm.GetPSBT(network.NBitcoinNetwork);
if (vm.InvalidPSBT || psbt is null)
{
if (vm.InvalidPSBT)
{
vm.GlobalError = "Invalid PSBT";
}
return(View(nameof(WalletPSBT), vm));
}
DerivationSchemeSettings derivationSchemeSettings = GetDerivationSchemeSettings(walletId);
if (derivationSchemeSettings == null)
{
return(NotFound());
}
await FetchTransactionDetails(derivationSchemeSettings, vm, network);
switch (command)
{
case "payjoin":
string error;
try
{
var proposedPayjoin = await GetPayjoinProposedTX(new BitcoinUrlBuilder(vm.SigningContext.PayJoinBIP21, network.NBitcoinNetwork), psbt,
derivationSchemeSettings, network, cancellationToken);
try
{
proposedPayjoin.Settings.SigningOptions = new SigningOptions
{
EnforceLowR = !(vm.SigningContext?.EnforceLowR is false)
};
var extKey = ExtKey.Parse(vm.SigningKey, network.NBitcoinNetwork);
proposedPayjoin = proposedPayjoin.SignAll(derivationSchemeSettings.AccountDerivation,
extKey,
RootedKeyPath.Parse(vm.SigningKeyPath));
vm.SigningContext.PSBT = proposedPayjoin.ToBase64();
vm.SigningContext.OriginalPSBT = psbt.ToBase64();
proposedPayjoin.Finalize();
var hash = proposedPayjoin.ExtractTransaction().GetHash();
_EventAggregator.Publish(new UpdateTransactionLabel(walletId, hash, UpdateTransactionLabel.PayjoinLabelTemplate()));
TempData.SetStatusMessageModel(new StatusMessageModel
{
Severity = StatusMessageModel.StatusSeverity.Success,
AllowDismiss = false,
Html = $"The payjoin transaction has been successfully broadcasted ({proposedPayjoin.ExtractTransaction().GetHash()})"
});
return(await WalletPSBTReady(walletId, vm, "broadcast"));
}
catch (Exception)
{
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Warning,
AllowDismiss = false,
Html =
"This transaction has been coordinated between the receiver and you to create a <a href='https://en.bitcoin.it/wiki/PayJoin' target='_blank'>payjoin transaction</a> by adding inputs from the receiver.<br/>" +
"The amount being sent may appear higher but is in fact almost same.<br/><br/>" +
"If you cancel or refuse to sign this transaction, the payment will proceed without payjoin"
});
vm.SigningContext.PSBT = proposedPayjoin.ToBase64();
vm.SigningContext.OriginalPSBT = psbt.ToBase64();
return(ViewVault(walletId, vm.SigningContext));
}
}
catch (PayjoinReceiverException ex)
{
error = $"The payjoin receiver could not complete the payjoin: {ex.Message}";
}
catch (PayjoinSenderException ex)
{
error = $"We rejected the receiver's payjoin proposal: {ex.Message}";
}
catch (Exception ex)
{
error = $"Unexpected payjoin error: {ex.Message}";
}
//we possibly exposed the tx to the receiver, so we need to broadcast straight away
psbt.Finalize();
TempData.SetStatusMessageModel(new StatusMessageModel
{
Severity = StatusMessageModel.StatusSeverity.Warning,
AllowDismiss = false,
Html = $"The payjoin transaction could not be created.<br/>" +
$"The original transaction was broadcasted instead. ({psbt.ExtractTransaction().GetHash()})<br/><br/>" +
$"{error}"
});
return(await WalletPSBTReady(walletId, vm, "broadcast"));
case "broadcast" when !psbt.IsAllFinalized() && !psbt.TryFinalize(out var errors):
vm.SetErrors(errors);
return(View(nameof(WalletPSBT), vm));
case "broadcast":
{
var transaction = psbt.ExtractTransaction();
try
{
var broadcastResult = await ExplorerClientProvider.GetExplorerClient(network).BroadcastAsync(transaction);
if (!broadcastResult.Success)
{
if (!string.IsNullOrEmpty(vm.SigningContext.OriginalPSBT))
{
TempData.SetStatusMessageModel(new StatusMessageModel
{
Severity = StatusMessageModel.StatusSeverity.Warning,
AllowDismiss = false,
Html = $"The payjoin transaction could not be broadcasted.<br/>({broadcastResult.RPCCode} {broadcastResult.RPCCodeMessage} {broadcastResult.RPCMessage}).<br/>The transaction has been reverted back to its original format and has been broadcast."
});
vm.SigningContext.PSBT = vm.SigningContext.OriginalPSBT;
vm.SigningContext.OriginalPSBT = null;
return(await WalletPSBTReady(walletId, vm, "broadcast"));
}
vm.GlobalError = $"RPC Error while broadcasting: {broadcastResult.RPCCode} {broadcastResult.RPCCodeMessage} {broadcastResult.RPCMessage}";
return(View(nameof(WalletPSBT), vm));
}
else
{
var wallet = _walletProvider.GetWallet(network);
var derivationSettings = GetDerivationSchemeSettings(walletId);
wallet.InvalidateCache(derivationSettings.AccountDerivation);
}
}
catch (Exception ex)
{
vm.GlobalError = "Error while broadcasting: " + ex.Message;
return(View(nameof(WalletPSBT), vm));
}
if (!TempData.HasStatusMessage())
{
TempData[WellKnownTempData.SuccessMessage] = $"Transaction broadcasted successfully ({transaction.GetHash()})";
}
var returnUrl = this.HttpContext.Request.Query["returnUrl"].FirstOrDefault();
if (returnUrl is not null)
{
return(Redirect(returnUrl));
}
return(RedirectToAction(nameof(WalletTransactions), new { walletId = walletId.ToString() }));
}
case "analyze-psbt":
return(RedirectToWalletPSBT(new WalletPSBTViewModel()
{
PSBT = psbt.ToBase64()
}));
case "decode":
await FetchTransactionDetails(derivationSchemeSettings, vm, network);
return(View("WalletPSBTDecoded", vm));
default:
vm.GlobalError = "Unknown command";
return(View(nameof(WalletPSBT), vm));
}
}
public TransactionBroadcasterViewModel() : base("Transaction Broadcaster")
{
Global = Locator.Current.GetService <Global>();
ButtonText = "Broadcast Transaction";
PasteCommand = ReactiveCommand.CreateFromTask(async() =>
{
if (!string.IsNullOrEmpty(TransactionString))
{
return;
}
var textToPaste = await Application.Current.Clipboard.GetTextAsync();
TransactionString = textToPaste;
});
IObservable <bool> broadcastTransactionCanExecute = this
.WhenAny(x => x.TransactionString, (transactionString) => !string.IsNullOrWhiteSpace(transactionString.Value))
.ObserveOn(RxApp.MainThreadScheduler);
BroadcastTransactionCommand = ReactiveCommand.CreateFromTask(
async() => await OnDoTransactionBroadcastAsync(),
broadcastTransactionCanExecute);
ImportTransactionCommand = ReactiveCommand.CreateFromTask(
async() =>
{
try
{
var ofd = new OpenFileDialog
{
AllowMultiple = false,
Title = "Import Transaction"
};
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
var initialDirectory = Path.Combine("/media", Environment.UserName);
if (!Directory.Exists(initialDirectory))
{
initialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
}
ofd.Directory = initialDirectory;
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
ofd.Directory = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
}
var window = (Application.Current.ApplicationLifetime as IClassicDesktopStyleApplicationLifetime).MainWindow;
var selected = await ofd.ShowAsync(window, fallBack: true);
if (selected != null && selected.Any())
{
var path = selected.First();
var psbtBytes = await File.ReadAllBytesAsync(path);
PSBT psbt = null;
Transaction transaction = null;
try
{
psbt = PSBT.Load(psbtBytes, Global.Network);
}
catch
{
var text = await File.ReadAllTextAsync(path);
text = text.Trim();
try
{
psbt = PSBT.Parse(text, Global.Network);
}
catch
{
transaction = Transaction.Parse(text, Global.Network);
}
}
if (psbt != null)
{
if (!psbt.IsAllFinalized())
{
psbt.Finalize();
}
TransactionString = psbt.ToBase64();
}
else
{
TransactionString = transaction.ToHex();
}
}
}
catch (Exception ex)
{
Logger.LogError(ex);
NotificationHelpers.Error(ex.ToUserFriendlyString());
}
},
outputScheduler: RxApp.MainThreadScheduler);
Observable
.Merge(PasteCommand.ThrownExceptions)
.Merge(BroadcastTransactionCommand.ThrownExceptions)
.Merge(ImportTransactionCommand.ThrownExceptions)
.ObserveOn(RxApp.TaskpoolScheduler)
.Subscribe(ex =>
{
NotificationHelpers.Error(ex.ToUserFriendlyString());
Logger.LogError(ex);
});
}
public async Task <IActionResult> WalletPSBTReady(
[ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId, WalletPSBTReadyViewModel vm, string command = null, CancellationToken cancellationToken = default)
{
if (command == null)
{
return(await WalletPSBTReady(walletId, vm));
}
PSBT psbt = null;
var network = NetworkProvider.GetNetwork <BTCPayNetwork>(walletId.CryptoCode);
DerivationSchemeSettings derivationSchemeSettings = null;
try
{
psbt = PSBT.Parse(vm.SigningContext.PSBT, network.NBitcoinNetwork);
derivationSchemeSettings = GetDerivationSchemeSettings(walletId);
if (derivationSchemeSettings == null)
{
return(NotFound());
}
await FetchTransactionDetails(derivationSchemeSettings, vm, network);
}
catch
{
vm.GlobalError = "Invalid PSBT";
return(View(nameof(WalletPSBTReady), vm));
}
switch (command)
{
case "payjoin":
string error = null;
try
{
var proposedPayjoin = await GetPayjoinProposedTX(new BitcoinUrlBuilder(vm.SigningContext.PayJoinBIP21, network.NBitcoinNetwork), psbt,
derivationSchemeSettings, network, cancellationToken);
try
{
var extKey = ExtKey.Parse(vm.SigningKey, network.NBitcoinNetwork);
proposedPayjoin = proposedPayjoin.SignAll(derivationSchemeSettings.AccountDerivation,
extKey,
RootedKeyPath.Parse(vm.SigningKeyPath), new SigningOptions()
{
EnforceLowR = !(vm.SigningContext?.EnforceLowR is false)
});
vm.SigningContext.PSBT = proposedPayjoin.ToBase64();
vm.SigningContext.OriginalPSBT = psbt.ToBase64();
proposedPayjoin.Finalize();
var hash = proposedPayjoin.ExtractTransaction().GetHash();
_EventAggregator.Publish(new UpdateTransactionLabel(walletId, hash, UpdateTransactionLabel.PayjoinLabelTemplate()));
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Success,
AllowDismiss = false,
Html = $"The payjoin transaction has been successfully broadcasted ({proposedPayjoin.ExtractTransaction().GetHash()})"
});
return(await WalletPSBTReady(walletId, vm, "broadcast"));
}
catch (Exception)
{
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Warning,
AllowDismiss = false,
Html =
$"This transaction has been coordinated between the receiver and you to create a <a href='https://en.bitcoin.it/wiki/PayJoin' target='_blank'>payjoin transaction</a> by adding inputs from the receiver.<br/>" +
$"The amount being sent may appear higher but is in fact almost same.<br/><br/>" +
$"If you cancel or refuse to sign this transaction, the payment will proceed without payjoin"
});
vm.SigningContext.PSBT = proposedPayjoin.ToBase64();
vm.SigningContext.OriginalPSBT = psbt.ToBase64();
return(ViewVault(walletId, vm.SigningContext));
}
}
public SigningContextModel(PSBT psbt)
{
PSBT = psbt.ToBase64();
}
public async Task <IActionResult> WalletPSBTReady(
[ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId, WalletPSBTReadyViewModel vm, string command = null, CancellationToken cancellationToken = default)
{
if (command == null)
{
return(await WalletPSBTReady(walletId, vm.PSBT, vm.SigningKey, vm.SigningKeyPath, vm.OriginalPSBT, vm.PayJoinEndpointUrl));
}
PSBT psbt = null;
var network = NetworkProvider.GetNetwork <BTCPayNetwork>(walletId.CryptoCode);
DerivationSchemeSettings derivationSchemeSettings = null;
try
{
psbt = PSBT.Parse(vm.PSBT, network.NBitcoinNetwork);
derivationSchemeSettings = GetDerivationSchemeSettings(walletId);
if (derivationSchemeSettings == null)
{
return(NotFound());
}
await FetchTransactionDetails(derivationSchemeSettings, vm, network);
}
catch
{
vm.GlobalError = "Invalid PSBT";
return(View(nameof(WalletPSBTReady), vm));
}
switch (command)
{
case "payjoin":
string error = null;
try
{
var proposedPayjoin = await GetPayjoinProposedTX(vm.PayJoinEndpointUrl, psbt,
derivationSchemeSettings, network, cancellationToken);
try
{
var extKey = ExtKey.Parse(vm.SigningKey, network.NBitcoinNetwork);
proposedPayjoin = proposedPayjoin.SignAll(derivationSchemeSettings.AccountDerivation,
extKey,
RootedKeyPath.Parse(vm.SigningKeyPath));
vm.PSBT = proposedPayjoin.ToBase64();
vm.OriginalPSBT = psbt.ToBase64();
proposedPayjoin.Finalize();
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Success,
AllowDismiss = false,
Html = $"The payjoin transaction has been successfully broadcasted ({proposedPayjoin.ExtractTransaction().GetHash()})"
});
return(await WalletPSBTReady(walletId, vm, "broadcast"));
}
catch (Exception)
{
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Warning,
AllowDismiss = false,
Html =
$"This transaction has been coordinated between the receiver and you to create a <a href='https://en.bitcoin.it/wiki/PayJoin' target='_blank'>payjoin transaction</a> by adding inputs from the receiver.<br/>" +
$"The amount being sent may appear higher but is in fact almost same.<br/><br/>" +
$"If you cancel refuse to sign this transaction, the payment will proceed without payjoin"
});
return(ViewVault(walletId, proposedPayjoin, vm.PayJoinEndpointUrl, psbt));
}
}
catch (PayjoinReceiverException ex)
{
error = $"The payjoin receiver could not complete the payjoin: {ex.Message}";
}
catch (PayjoinSenderException ex)
{
error = $"We rejected the receiver's payjoin proposal: {ex.Message}";
}
catch (Exception ex)
{
error = $"Unexpected payjoin error: {ex.Message}";
}
//we possibly exposed the tx to the receiver, so we need to broadcast straight away
psbt.Finalize();
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Warning,
AllowDismiss = false,
Html = $"The payjoin transaction could not be created.<br/>" +
$"The original transaction was broadcasted instead. ({psbt.ExtractTransaction().GetHash()})<br/><br/>" +
$"{error}"
});
return(await WalletPSBTReady(walletId, vm, "broadcast"));
case "broadcast" when !psbt.IsAllFinalized() && !psbt.TryFinalize(out var errors):
vm.SetErrors(errors);
return(View(nameof(WalletPSBTReady), vm));
case "broadcast":
{
var transaction = psbt.ExtractTransaction();
try
{
var broadcastResult = await ExplorerClientProvider.GetExplorerClient(network).BroadcastAsync(transaction);
if (!broadcastResult.Success)
{
if (!string.IsNullOrEmpty(vm.OriginalPSBT))
{
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Warning,
AllowDismiss = false,
Html = $"The payjoin transaction could not be broadcasted.<br/>({broadcastResult.RPCCode} {broadcastResult.RPCCodeMessage} {broadcastResult.RPCMessage}).<br/>The transaction has been reverted back to its original format and has been broadcast."
});
vm.PSBT = vm.OriginalPSBT;
vm.OriginalPSBT = null;
return(await WalletPSBTReady(walletId, vm, "broadcast"));
}
vm.GlobalError = $"RPC Error while broadcasting: {broadcastResult.RPCCode} {broadcastResult.RPCCodeMessage} {broadcastResult.RPCMessage}";
return(View(nameof(WalletPSBTReady), vm));
}
}
catch (Exception ex)
{
vm.GlobalError = "Error while broadcasting: " + ex.Message;
return(View(nameof(WalletPSBTReady), vm));
}
if (!TempData.HasStatusMessage())
{
TempData[WellKnownTempData.SuccessMessage] = $"Transaction broadcasted successfully ({transaction.GetHash()})";
}
return(RedirectToWalletTransaction(walletId, transaction));
}
case "analyze-psbt":
return(RedirectToWalletPSBT(psbt));
default:
vm.GlobalError = "Unknown command";
return(View(nameof(WalletPSBTReady), vm));
}
}
public async Task <IActionResult> WalletPSBTReady(
[ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId, WalletPSBTReadyViewModel vm, string command = null)
{
PSBT psbt = null;
var network = NetworkProvider.GetNetwork <BTCPayNetwork>(walletId.CryptoCode);
try
{
psbt = PSBT.Parse(vm.PSBT, network.NBitcoinNetwork);
var derivationSchemeSettings = await GetDerivationSchemeSettings(walletId);
if (derivationSchemeSettings == null)
{
return(NotFound());
}
await FetchTransactionDetails(derivationSchemeSettings, vm, network);
}
catch
{
vm.GlobalError = "Invalid PSBT";
return(View(vm));
}
if (command == "broadcast")
{
if (!psbt.IsAllFinalized() && !psbt.TryFinalize(out var errors))
{
vm.SetErrors(errors);
return(View(vm));
}
var transaction = psbt.ExtractTransaction();
try
{
var broadcastResult = await ExplorerClientProvider.GetExplorerClient(network).BroadcastAsync(transaction);
if (!broadcastResult.Success)
{
vm.GlobalError = $"RPC Error while broadcasting: {broadcastResult.RPCCode} {broadcastResult.RPCCodeMessage} {broadcastResult.RPCMessage}";
return(View(vm));
}
}
catch (Exception ex)
{
vm.GlobalError = "Error while broadcasting: " + ex.Message;
return(View(vm));
}
return(await RedirectToWalletTransaction(walletId, transaction));
}
else if (command == "analyze-psbt")
{
return(RedirectToAction(nameof(WalletPSBT), new { walletId = walletId, psbt = psbt.ToBase64() }));
}
else
{
vm.GlobalError = "Unknown command";
return(View(vm));
}
}
public static async Task <PSBT> UTXOUpdatePSBT(this RPCClient rpcClient, PSBT psbt)
{
if (psbt == null)
{
throw new ArgumentNullException(nameof(psbt));
}
var response = await rpcClient.SendCommandAsync("utxoupdatepsbt", new object[] { psbt.ToBase64() });
response.ThrowIfError();
if (response.Error == null && response.Result is JValue rpcResult && rpcResult.Value is string psbtStr)
{
return(PSBT.Parse(psbtStr, psbt.Network));
}
throw new Exception("This should never happen");
}
public async Task <IActionResult> WalletPSBTReady(
[ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId, WalletPSBTReadyViewModel vm, string command = null, CancellationToken cancellationToken = default)
{
if (command == null)
{
return(await WalletPSBTReady(walletId, vm));
}
PSBT psbt = null;
var network = NetworkProvider.GetNetwork <BTCPayNetwork>(walletId.CryptoCode);
DerivationSchemeSettings derivationSchemeSettings = null;
try
{
psbt = PSBT.Parse(vm.SigningContext.PSBT, network.NBitcoinNetwork);
derivationSchemeSettings = GetDerivationSchemeSettings(walletId);
if (derivationSchemeSettings == null)
{
return(NotFound());
}
await FetchTransactionDetails(derivationSchemeSettings, vm, network);
}
catch
{
vm.GlobalError = "Invalid PSBT";
return(View(nameof(WalletPSBTReady), vm));
}
switch (command)
{
case "payjoin":
string error = null;
try
{
var proposedPayjoin = await GetPayjoinProposedTX(vm.SigningContext.PayJoinEndpointUrl, psbt,
derivationSchemeSettings, network, cancellationToken);
try
{
var extKey = ExtKey.Parse(vm.SigningKey, network.NBitcoinNetwork);
proposedPayjoin = proposedPayjoin.SignAll(derivationSchemeSettings.AccountDerivation,
extKey,
RootedKeyPath.Parse(vm.SigningKeyPath), new SigningOptions()
{
EnforceLowR = !(vm.SigningContext?.EnforceLowR is false)
});
vm.SigningContext.PSBT = proposedPayjoin.ToBase64();
vm.SigningContext.OriginalPSBT = psbt.ToBase64();
proposedPayjoin.Finalize();
var hash = proposedPayjoin.ExtractTransaction().GetHash();
_EventAggregator.Publish(new UpdateTransactionLabel()
{
WalletId = walletId,
TransactionLabels = new Dictionary <uint256, List <(string color, string label)> >()
{
{
hash,
new List <(string color, string label)>
{
UpdateTransactionLabel.PayjoinLabelTemplate()
}
}
}
});
TempData.SetStatusMessageModel(new StatusMessageModel()
{
Severity = StatusMessageModel.StatusSeverity.Success,
AllowDismiss = false,
Html = $"The payjoin transaction has been successfully broadcasted ({proposedPayjoin.ExtractTransaction().GetHash()})"
});
return(await WalletPSBTReady(walletId, vm, "broadcast"));
}
public async Task <IActionResult> WalletPSBTReady(
[ModelBinder(typeof(WalletIdModelBinder))]
WalletId walletId, WalletPSBTReadyViewModel vm, string command = null)
{
PSBT psbt = null;
var network = NetworkProvider.GetNetwork(walletId.CryptoCode);
try
{
psbt = PSBT.Parse(vm.PSBT, network.NBitcoinNetwork);
await FetchTransactionDetails(walletId, vm, network);
}
catch
{
vm.Errors = new List <string>();
vm.Errors.Add("Invalid PSBT");
return(View(vm));
}
if (command == "broadcast")
{
if (!psbt.IsAllFinalized() && !psbt.TryFinalize(out var errors))
{
vm.Errors = new List <string>();
vm.Errors.AddRange(errors.Select(e => e.ToString()));
return(View(vm));
}
var transaction = psbt.ExtractTransaction();
try
{
var broadcastResult = await ExplorerClientProvider.GetExplorerClient(network).BroadcastAsync(transaction);
if (!broadcastResult.Success)
{
vm.Errors = new List <string>();
vm.Errors.Add($"RPC Error while broadcasting: {broadcastResult.RPCCode} {broadcastResult.RPCCodeMessage} {broadcastResult.RPCMessage}");
return(View(vm));
}
}
catch (Exception ex)
{
vm.Errors = new List <string>();
vm.Errors.Add("Error while broadcasting: " + ex.Message);
return(View(vm));
}
return(await RedirectToWalletTransaction(walletId, transaction));
}
else if (command == "analyze-psbt")
{
return(RedirectToAction(nameof(WalletPSBT), new { walletId = walletId, psbt = psbt.ToBase64() }));
}
else
{
vm.Errors = new List <string>();
vm.Errors.Add("Unknown command");
return(View(vm));
}
}
