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fixes

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This commit is contained in:
Kukks 2020-04-17 11:55:24 +02:00
parent 514b695907
commit 51db617584
2 changed files with 33 additions and 5 deletions
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5
BTCPayServer/Payments/PayJoin/PayJoinEndpointController.cs
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@ -451,8 +451,11 @@ namespace BTCPayServer.Payments.PayJoin
foreach (var selectedUtxo in selectedUTXOs.Select(o => o.Value))
{
var signedInput = newPsbt.Inputs.FindIndexedInput(selectedUtxo.Outpoint);
signedInput.UpdateFromCoin(selectedUtxo.AsCoin());
var coin = selectedUtxo.AsCoin(derivationSchemeSettings.AccountDerivation);
signedInput.UpdateFromCoin(coin);
var privateKey = accountKey.Derive(selectedUtxo.KeyPath).PrivateKey;
//hack until UpdateFromCoin is fixed in NBitcoin when the coin is p2sh
signedInput.WitnessUtxo = coin.TxOut;
signedInput.Sign(privateKey);
signedInput.FinalizeInput();
newTx.Inputs[signedInput.Index].WitScript = newPsbt.Inputs[(int)signedInput.Index].FinalScriptWitness;

31
BTCPayServer/Services/PayjoinClient.cs
View file

@ -34,9 +34,9 @@ namespace BTCPayServer.Services
if (i.WitnessUtxo.ScriptPubKey.IsScriptType(ScriptType.P2WPKH))
return ScriptPubKeyType.Segwit;
if (i.WitnessUtxo.ScriptPubKey.IsScriptType(ScriptType.P2SH) &&
i.FinalScriptWitness.GetSigner().ScriptPubKey.IsScriptType(ScriptType.P2WPKH))
PayToWitPubKeyHashTemplate.Instance.ExtractWitScriptParameters(i.FinalScriptWitness) is {})
return ScriptPubKeyType.SegwitP2SH;
return null as ScriptPubKeyType?;
return null;
}
}
@ -212,8 +212,33 @@ namespace BTCPayServer.Services
if (sentAfter > sentBefore)
{
var overPaying = sentAfter - sentBefore;
if (!newPSBT.TryGetEstimatedFeeRate(out var newFeeRate) || !newPSBT.TryGetVirtualSize(out var newVirtualSize))
//hack until GetAllCoins is fixed in NBitcoin when the coin is p2sh (redeem needs to be loaded from RedeemScript and fallback to i.FinalScriptSig extraction)
int newVirtualSize = 0;
if (type == ScriptPubKeyType.SegwitP2SH)
{
if (!newPSBT.TryGetFee(out var fee))
{
throw new PayjoinSenderException("The payjoin receiver did not included UTXO information to calculate fee correctly");
}
var transactionBuilder = originalTx.Network.CreateTransactionBuilder();
transactionBuilder.AddCoins(newPSBT.Inputs.Select(i =>i.GetCoin().ToScriptCoin(i.RedeemScript??PayToScriptHashTemplate.Instance.ExtractScriptSigParameters(i.FinalScriptSig).RedeemScript)));
try
{
newVirtualSize = transactionBuilder.EstimateSize(newPSBT.GetGlobalTransaction(), true);
}
catch
{
throw new PayjoinSenderException("The payjoin receiver did not included UTXO information to calculate fee correctly");
}
}
else
{
if (!newPSBT.TryGetEstimatedFeeRate(out var newFeeRate) || !newPSBT.TryGetVirtualSize(out newVirtualSize))
throw new PayjoinSenderException("The payjoin receiver did not included UTXO information to calculate fee correctly");
}
var additionalFee = newPSBT.GetFee() - originalFee;
if (overPaying > additionalFee)
throw new PayjoinSenderException("The payjoin receiver is sending more money to himself");