private DerivationSchemeSettings ParseDerivationStrategy(string derivationScheme, Script hint, BTCPayNetwork network)
{
var parser = new DerivationSchemeParser(network);
parser.HintScriptPubKey = hint;
return(new DerivationSchemeSettings(parser.Parse(derivationScheme), network));
}
private DerivationStrategy ParseDerivationStrategy(string derivationScheme, Script hint, BTCPayNetwork network)
{
var parser = new DerivationSchemeParser(network.NBitcoinNetwork, network.DefaultSettings.ChainType);
parser.HintScriptPubKey = hint;
return(new DerivationStrategy(parser.Parse(derivationScheme), network));
}
public async Task <NBXplorerPublicWallet> ConstructClient()
{
var data = GetData();
var explorerClient = _nbXplorerClientProvider.GetClient(data.CryptoCode);
var factory = explorerClient.Network.DerivationStrategyFactory;
if (string.IsNullOrEmpty(data
.DerivationStrategy))
{
return(await _nbXplorerPublicWalletProvider.Get(data.CryptoCode,
BitcoinAddress.Create(
data.Address,
explorerClient.Network.NBitcoinNetwork)));
}
else
{
return(await _nbXplorerPublicWalletProvider.Get(data.CryptoCode,
_derivationSchemeParser.Parse(factory,
data.DerivationStrategy)));
}
}
public async Task <IActionResult> Create(CreatePaymentForwarderViewModel viewModel)
{
var services = await _externalServiceManager.GetExternalServicesData(new ExternalServicesDataQuery()
{
UserId = _userManager.GetUserId(User),
Type = new[] { NBXplorerWalletService.NBXplorerWalletServiceType }
});
if (services.Any())
{
var newServices = services.ToList();
newServices.Insert(0, new ExternalServiceData()
{
Id = null,
Name = "None"
});
services = newServices;
}
viewModel.Services =
new SelectList(services, nameof(ExternalServiceData.Id), nameof(ExternalServiceData.Name));
viewModel.CryptoCodes = new SelectList(_nbXplorerOptions.Cryptos?.ToList() ?? new List <string>(),
viewModel.CryptoCode);
viewModel.PaymentDestinations = viewModel.PaymentDestinations ??
new List <CreatePaymentForwarderViewModel.PaymentDestination>();
if (!string.IsNullOrEmpty(viewModel.Action))
{
if (viewModel.Action == "add-destination")
{
viewModel.PaymentDestinations.Add(new CreatePaymentForwarderViewModel.PaymentDestination());
return(View(viewModel));
}
if (viewModel.Action.StartsWith("remove-destination", StringComparison.InvariantCultureIgnoreCase))
{
var index = int.Parse(viewModel.Action.Substring(viewModel.Action.IndexOf(":") + 1));
viewModel.PaymentDestinations.RemoveAt(index);
return(View(viewModel));
}
}
if ((string.IsNullOrEmpty(viewModel.SelectedSourceWalletExternalServiceId) &&
!viewModel.GenerateSourceWallet) ||
!string.IsNullOrEmpty(viewModel.SelectedSourceWalletExternalServiceId) &&
viewModel.GenerateSourceWallet)
{
if (viewModel.Services.Items.Any())
{
ModelState.AddModelError(nameof(viewModel.SelectedSourceWalletExternalServiceId),
"Please select a source nbxplorer wallet OR check the generate wallet checkbox");
}
ModelState.AddModelError(nameof(viewModel.GenerateSourceWallet),
"Please select a source nbxplorer wallet OR check the generate wallet checkbox");
}
else if (!string.IsNullOrEmpty(viewModel.SelectedSourceWalletExternalServiceId))
{
var service = services.SingleOrDefault(data =>
data.Id == viewModel.SelectedSourceWalletExternalServiceId);
if (service == null)
{
viewModel.AddModelError(
nameof(viewModel.SelectedSourceWalletExternalServiceId),
"Wallet chosen is wrong... ヽ༼ ಠ益ಠ ༽ﾉ ", ModelState);
}
else
{
var data = new NBXplorerWalletService(service, _nbXplorerPublicWalletProvider,
_derivationSchemeParser, _nbXplorerClientProvider).GetData();
if (data.CryptoCode != viewModel.CryptoCode)
{
viewModel.AddModelError(
nameof(viewModel.SelectedSourceWalletExternalServiceId),
"Wallet chosen not the same crypto", ModelState);
}
else if (!data.PrivateKeys.Any())
{
viewModel.AddModelError(
nameof(viewModel.SelectedSourceWalletExternalServiceId),
"Wallet chosen has so signing keys which would make forwarding txs impossible", ModelState);
}
}
}
if (!viewModel.PaymentDestinations.Any())
{
ModelState.AddModelError(string.Empty,
"Please add at least one transaction destination");
}
else
{
var totalSumIssue = viewModel.PaymentDestinations.Sum(output => output.AmountPercentage) > 100;
var subtractFeesOutputs = viewModel.PaymentDestinations.Select((output, i) => (output, i))
.Where(tuple => tuple.Item1.SubtractFeesFromOutput);
if (subtractFeesOutputs.Count() > 1)
{
foreach (var subtractFeesOutput in subtractFeesOutputs)
{
viewModel.AddModelError(
nameof(CreatePaymentForwarderViewModel.PaymentDestination.SubtractFeesFromOutput),
"You can only subtract fees from one destination", ModelState);
}
}
for (var index = 0; index < viewModel.PaymentDestinations.Count; index++)
{
if (totalSumIssue)
{
viewModel.AddModelError(
nameof(CreatePaymentForwarderViewModel.PaymentDestination.AmountPercentage),
"Your total amounts across all outputs exceeds 100%. We're not a central bank and can't print more money than you own, sorry.",
ModelState);
}
var viewModelPaymentDestination = viewModel.PaymentDestinations[index];
var check =
(string.IsNullOrEmpty(viewModelPaymentDestination.DerivationStrategy) ? 0 : 1) +
(string.IsNullOrEmpty(viewModelPaymentDestination.DestinationAddress) ? 0 : 1) +
(string.IsNullOrEmpty(viewModelPaymentDestination.SelectedDestinationWalletExternalServiceId)
? 0
: 1);
if (check != 1)
{
viewModel.AddModelError(
nameof(CreatePaymentForwarderViewModel.PaymentDestination.DestinationAddress),
"Please choose to track either an address OR a derivation scheme OR an existing NBXplorer Wallet External Service",
ModelState);
viewModel.AddModelError(
nameof(CreatePaymentForwarderViewModel.PaymentDestination.DerivationStrategy),
"Please choose to track either an address OR a derivation scheme OR an existing NBXplorer Wallet External Service",
ModelState);
viewModel.AddModelError(
nameof(CreatePaymentForwarderViewModel.PaymentDestination.SelectedDestinationWalletExternalServiceId),
"Please choose to track either an address OR a derivation scheme OR an existing NBXplorer Wallet External Service",
ModelState);
}
if (!string.IsNullOrEmpty(viewModelPaymentDestination.SelectedDestinationWalletExternalServiceId) &&
!string.IsNullOrEmpty(viewModel.CryptoCode))
{
var service = services.SingleOrDefault(data =>
data.Id == viewModelPaymentDestination.SelectedDestinationWalletExternalServiceId);
if (service == null)
{
viewModel.AddModelError(
nameof(CreatePaymentForwarderViewModel.PaymentDestination.SelectedDestinationWalletExternalServiceId),
"Wallet chosen is wrong... ヽ༼ ಠ益ಠ ༽ﾉ ", ModelState);
}
else if (
new NBXplorerWalletService(service, _nbXplorerPublicWalletProvider, _derivationSchemeParser, _nbXplorerClientProvider).GetData().CryptoCode !=
viewModel.CryptoCode)
{
viewModel.AddModelError(
nameof(CreatePaymentForwarderViewModel.PaymentDestination.SelectedDestinationWalletExternalServiceId),
"Wallet chosen not the same crypto", ModelState);
}
}
BitcoinAddress address = null;
DerivationStrategyBase derivationStrategy = null;
if (!string.IsNullOrEmpty(viewModelPaymentDestination.DestinationAddress) &&
!string.IsNullOrEmpty(viewModel.CryptoCode))
{
try
{
address = BitcoinAddress.Create(viewModelPaymentDestination.DestinationAddress,
_nbXplorerClientProvider.GetClient(viewModel.CryptoCode).Network.NBitcoinNetwork);
}
catch (Exception)
{
viewModel.AddModelError(
nameof(CreatePaymentForwarderViewModel.PaymentDestination.DestinationAddress),
"Invalid Address", ModelState);
}
}
if (!string.IsNullOrEmpty(viewModelPaymentDestination.DerivationStrategy) &&
!string.IsNullOrEmpty(viewModel.CryptoCode))
{
try
{
var factory = _nbXplorerClientProvider.GetClient(viewModel.CryptoCode).Network
.DerivationStrategyFactory;
derivationStrategy = _derivationSchemeParser.Parse(factory,
viewModelPaymentDestination.DerivationStrategy);
}
catch
{
viewModel.AddModelError(
nameof(CreatePaymentForwarderViewModel.PaymentDestination.DerivationStrategy),
"Invalid Derivation Scheme", ModelState);
}
}
}
}
if (!ModelState.IsValid)
{
return(View(viewModel));
}
return(await SetItUp(viewModel));
}
private DerivationStrategy ParseDerivationStrategy(string derivationScheme, Script hint, BTCPayNetwork network)
{
var parser = new DerivationSchemeParser(network.NBitcoinNetwork);
parser.HintScriptPubKey = hint;
return new DerivationStrategy(parser.Parse(derivationScheme), network);
}