public void CanHandleEmptyKeyPath()
{
var rKeyPath = RootedKeyPath.Parse("01234567");
Assert.Equal(rKeyPath.KeyPath, KeyPath.Empty);
Assert.Equal("", KeyPath.Empty.ToString());
Assert.Equal(new byte[0], KeyPath.Empty.ToBytes());
Assert.Equal("01234567", rKeyPath.ToStringWithEmptyKeyPathAware());
}
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));
}
}
private async Task FetchTransactionDetails(DerivationSchemeSettings derivationSchemeSettings, WalletPSBTReadyViewModel vm, BTCPayNetwork network)
{
var psbtObject = PSBT.Parse(vm.SigningContext.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);
}
}
public void CanSerializeInJson()
{
Key k = new Key();
CanSerializeInJsonCore(DateTimeOffset.UtcNow);
CanSerializeInJsonCore(new byte[] { 1, 2, 3 });
CanSerializeInJsonCore(k);
CanSerializeInJsonCore(Money.Coins(5.0m));
CanSerializeInJsonCore(k.PubKey.GetAddress(ScriptPubKeyType.Legacy, Network.Main), Network.Main);
CanSerializeInJsonCore(new KeyPath("1/2"));
CanSerializeInJsonCore(RootedKeyPath.Parse("7b09d780/0'/0'/2'"));
CanSerializeInJsonCore(Network.Main);
CanSerializeInJsonCore(new uint256(RandomUtils.GetBytes(32)));
CanSerializeInJsonCore(new uint160(RandomUtils.GetBytes(20)));
CanSerializeInJsonCore(new AssetId(k.PubKey));
CanSerializeInJsonCore(k.PubKey.ScriptPubKey);
CanSerializeInJsonCore(new Key().PubKey.WitHash.GetAddress(Network.Main), Network.Main);
CanSerializeInJsonCore(new Key().PubKey.WitHash.ScriptPubKey.WitHash.GetAddress(Network.Main), Network.Main);
var sig = k.Sign(new uint256(RandomUtils.GetBytes(32)));
CanSerializeInJsonCore(sig);
CanSerializeInJsonCore(new TransactionSignature(sig, SigHash.All));
CanSerializeInJsonCore(k.PubKey.Hash);
CanSerializeInJsonCore(k.PubKey.ScriptPubKey.Hash);
CanSerializeInJsonCore(k.PubKey.WitHash);
CanSerializeInJsonCore(k);
CanSerializeInJsonCore(k.PubKey);
CanSerializeInJsonCore(new WitScript(new Script(Op.GetPushOp(sig.ToDER()), Op.GetPushOp(sig.ToDER()))));
CanSerializeInJsonCore(new WitScript(OpcodeType.OP_0, OpcodeType.OP_0));
CanSerializeInJsonCore(new LockTime(1));
CanSerializeInJsonCore(new LockTime(130), out var str);
Assert.Equal("130", str);
var chain = CanSerializeInJsonCore(new ChainName("lol"), out str);
Assert.Equal("Lol", chain.ToString());
Assert.Equal("\"Lol\"", str);
CanSerializeInJsonCore(new LockTime(DateTime.UtcNow));
CanSerializeInJsonCore(new Sequence(1));
CanSerializeInJsonCore(new Sequence?(1));
CanSerializeInJsonCore(new Sequence?());
CanSerializeInJsonCore(new FeeRate(Money.Satoshis(1), 1000));
CanSerializeInJsonCore(new FeeRate(Money.Satoshis(1000), 1000));
CanSerializeInJsonCore(new FeeRate(0.5m));
CanSerializeInJsonCore(new HDFingerprint(0x0a), out str);
Assert.Equal("\"0a000000\"", str);
var feerate = Serializer.ToObject <FeeRate>("1");
Assert.Equal(new FeeRate(Money.Satoshis(1.0m), 1), feerate);
feerate = Serializer.ToObject <FeeRate>("1.0");
Assert.Equal("1 Sat/B", feerate.ToString());
Assert.Equal(new FeeRate(Money.Satoshis(1.0m), 1), feerate);
feerate = Serializer.ToObject <FeeRate>("0.001");
Assert.Equal("0.001 Sat/B", feerate.ToString());
var print = Serializer.ToObject <HDFingerprint>("\"0a000000\"");
var print2 = Serializer.ToObject <HDFingerprint>("10");
Assert.Equal(print, print2);
var printn = Serializer.ToObject <HDFingerprint?>("\"0a000000\"");
var print2n = Serializer.ToObject <HDFingerprint?>("10");
Assert.Equal(printn, print2n);
Assert.Null(Serializer.ToObject <HDFingerprint?>(""));
var psbt = PSBT.Parse("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", Network.Main);
var psbtJson = Serializer.ToString(psbt, Network.Main);
var psbt2 = Serializer.ToObject <PSBT>(psbtJson, Network.Main);
Assert.Equal(psbt, psbt2);
var expectedOutpoint = OutPoint.Parse("44f69ca74088d6d88e30156da85aae54543a87f67cdfdabbe9b53a92d6d7027c01000000");
var actualOutpoint = Serializer.ToObject <OutPoint>("\"44f69ca74088d6d88e30156da85aae54543a87f67cdfdabbe9b53a92d6d7027c01000000\"", Network.Main);
Assert.Equal(expectedOutpoint, actualOutpoint);
actualOutpoint = Serializer.ToObject <OutPoint>("\"7c02d7d6923ab5e9bbdadf7cf6873a5454ae5aa86d15308ed8d68840a79cf644-1\"", Network.Main);
Assert.Equal(expectedOutpoint, actualOutpoint);
CanSerializeInJsonCore(expectedOutpoint, out str);
Assert.Equal("\"44f69ca74088d6d88e30156da85aae54543a87f67cdfdabbe9b53a92d6d7027c01000000\"", str);
var key = new Key(Encoders.Hex.DecodeData("ce71d1851c03cc6c0331020391113acbf6843b32065e53e4308984537630eee1"));
var pubkey = new PubKey(Encoders.Hex.DecodeData("02eae22800451728c177244a79be8ff22e92d08ec3a5cdd0b6d4b54fa7a90bb44c"));
var internalKey = new TaprootInternalPubKey(Encoders.Hex.DecodeData("eae22800451728c177244a79be8ff22e92d08ec3a5cdd0b6d4b54fa7a90bb44c"));
var outputKey = new TaprootPubKey(Encoders.Hex.DecodeData("6bf657f19f5917eb6197ae123caf435611a1d35ba23a2d3394e579208d0f18d4"));
CanSerializeInJsonCore(key, out str);
CanSerializeInJsonCore(internalKey, out str);
CanSerializeInJsonCore(outputKey, out str);
CanSerializeInJsonCore(key.PubKey, out str);
Assert.Throws <JsonObjectException>(() =>
{
Serializer.ToObject <OutPoint>("1");
});
}
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 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;
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.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;
}
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:
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());
}
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));
}
}
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);
}
}
public async Task CanBuildTaprootSingleSigTransactions()
{
using (var nodeBuilder = NodeBuilderEx.Create())
{
var rpc = nodeBuilder.CreateNode().CreateRPCClient();
nodeBuilder.StartAll();
rpc.Generate(102);
var change = new Key();
var rootKey = new ExtKey();
var accountKeyPath = new KeyPath("86'/0'/0'");
var accountRootKeyPath = new RootedKeyPath(rootKey.GetPublicKey().GetHDFingerPrint(), accountKeyPath);
var accountKey = rootKey.Derive(accountKeyPath);
var key = accountKey.Derive(new KeyPath("0/0")).PrivateKey;
var address = key.PubKey.GetAddress(ScriptPubKeyType.TaprootBIP86, nodeBuilder.Network);
var destination = new Key();
var amount = new Money(1, MoneyUnit.BTC);
uint256 id = null;
Transaction tx = null;
ICoin coin = null;
TransactionBuilder builder = null;
var rate = new FeeRate(Money.Satoshis(1), 1);
async Task RefreshCoin()
{
id = await rpc.SendToAddressAsync(address, Money.Coins(1));
tx = await rpc.GetRawTransactionAsync(id);
coin = tx.Outputs.AsCoins().Where(o => o.ScriptPubKey == address.ScriptPubKey).Single();
builder = Network.Main.CreateTransactionBuilder(0);
}
await RefreshCoin();
var signedTx = builder
.AddCoins(coin)
.AddKeys(key)
.Send(destination, amount)
.SubtractFees()
.SetChange(change)
.SendEstimatedFees(rate)
.BuildTransaction(true);
rpc.SendRawTransaction(signedTx);
await RefreshCoin();
// Let's try again, but this time with PSBT
var psbt = builder
.AddCoins(coin)
.Send(destination, amount)
.SubtractFees()
.SetChange(change)
.SendEstimatedFees(rate)
.BuildPSBT(false);
var tk = key.PubKey.GetTaprootFullPubKey();
psbt.Inputs[0].HDTaprootKeyPaths.Add(tk.OutputKey, new TaprootKeyPath(accountRootKeyPath.Derive(KeyPath.Parse("0/0"))));
psbt.SignAll(ScriptPubKeyType.TaprootBIP86, accountKey, accountRootKeyPath);
// Check if we can roundtrip
psbt = CanRoundtripPSBT(psbt);
psbt.Finalize();
rpc.SendRawTransaction(psbt.ExtractTransaction());
// Let's try again, but this time with BuildPSBT(true)
await RefreshCoin();
psbt = builder
.AddCoins(coin)
.AddKeys(key)
.Send(destination, amount)
.SubtractFees()
.SetChange(change)
.SendEstimatedFees(rate)
.BuildPSBT(true);
psbt.Finalize();
rpc.SendRawTransaction(psbt.ExtractTransaction());
// Let's try again, this time with a merkle root
var merkleRoot = RandomUtils.GetUInt256();
address = key.PubKey.GetTaprootFullPubKey(merkleRoot).GetAddress(nodeBuilder.Network);
await RefreshCoin();
psbt = builder
.AddCoins(coin)
.AddKeys(key.CreateTaprootKeyPair(merkleRoot))
.Send(destination, amount)
.SubtractFees()
.SetChange(change)
.SendEstimatedFees(rate)
.BuildPSBT(true);
Assert.NotNull(psbt.Inputs[0].TaprootMerkleRoot);
Assert.NotNull(psbt.Inputs[0].TaprootInternalKey);
Assert.NotNull(psbt.Inputs[0].TaprootKeySignature);
psbt = CanRoundtripPSBT(psbt);
psbt.Finalize();
rpc.SendRawTransaction(psbt.ExtractTransaction());
// Can we sign the PSBT separately?
await RefreshCoin();
psbt = builder
.AddCoins(coin)
.Send(destination, amount)
.SubtractFees()
.SetChange(change)
.SendEstimatedFees(rate)
.BuildPSBT(false);
var taprootKeyPair = key.CreateTaprootKeyPair(merkleRoot);
psbt.Inputs[0].Sign(taprootKeyPair);
Assert.NotNull(psbt.Inputs[0].TaprootMerkleRoot);
Assert.NotNull(psbt.Inputs[0].TaprootInternalKey);
Assert.NotNull(psbt.Inputs[0].TaprootKeySignature);
// This line is useless, we just use it to test the PSBT roundtrip
psbt.Inputs[0].HDTaprootKeyPaths.Add(taprootKeyPair.PubKey,
new TaprootKeyPath(RootedKeyPath.Parse("12345678/86'/0'/0'/0/0"),
new uint256[] { RandomUtils.GetUInt256() }));
psbt = CanRoundtripPSBT(psbt);
psbt.Finalize();
rpc.SendRawTransaction(psbt.ExtractTransaction());
// Can we sign the transaction separately?
await RefreshCoin();
var coin1 = coin;
await RefreshCoin();
var coin2 = coin;
builder = Network.Main.CreateTransactionBuilder(0);
signedTx = builder
.AddCoins(coin1, coin2)
.Send(destination, amount)
.SubtractFees()
.SetChange(change)
.SendEstimatedFees(rate)
.BuildTransaction(false);
var unsignedTx = signedTx.Clone();
builder = Network.Main.CreateTransactionBuilder(0);
builder.AddKeys(key.CreateTaprootKeyPair(merkleRoot));
builder.AddCoins(coin1);
var ex = Assert.Throws <InvalidOperationException>(() => builder.SignTransactionInPlace(signedTx));
Assert.Contains("taproot", ex.Message);
builder.AddCoin(coin2);
builder.SignTransactionInPlace(signedTx);
Assert.True(!WitScript.IsNullOrEmpty(signedTx.Inputs.FindIndexedInput(coin2.Outpoint).WitScript));
// Another solution is to set the precomputed transaction data.
signedTx = unsignedTx;
builder = Network.Main.CreateTransactionBuilder(0);
builder.AddKeys(key.CreateTaprootKeyPair(merkleRoot));
builder.AddCoins(coin2);
builder.SetSigningOptions(new SigningOptions()
{
PrecomputedTransactionData = signedTx.PrecomputeTransactionData(new ICoin[] { coin1, coin2 })
});
builder.SignTransactionInPlace(signedTx);
Assert.True(!WitScript.IsNullOrEmpty(signedTx.Inputs.FindIndexedInput(coin2.Outpoint).WitScript));
// Let's check if we estimate precisely the size of a taproot transaction.
await RefreshCoin();
signedTx = builder
.AddCoins(coin)
.AddKeys(key.CreateTaprootKeyPair(merkleRoot))
.Send(destination, amount)
.SubtractFees()
.SetChange(change)
.SendEstimatedFees(rate)
.BuildTransaction(false);
var actualvsize = builder.EstimateSize(signedTx, true);
builder.SignTransactionInPlace(signedTx);
var expectedvsize = signedTx.GetVirtualSize();
// The estimator can't assume the sighash to be default
// for all inputs, so we likely overestimate 1 bytes per input
Assert.Equal(expectedvsize, actualvsize - 1);
}
}
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"));
}
