public bool TryFinalizeInput(out IList <PSBTError> errors)
{
errors = null;
if (IsFinalized())
{
return(true);
}
var isSane = this.CheckSanity();
if (isSane.Count != 0)
{
errors = isSane;
return(false);
}
if (witness_utxo == null && non_witness_utxo == null)
{
errors = new List <PSBTError>()
{
new PSBTError(Index, "Neither witness_utxo nor non_witness_output is set")
};
return(false);
}
var coin = this.GetSignableCoin(out var getSignableCoinError) ?? this.GetCoin(); // GetCoin can't be null at this stage.
TransactionBuilder transactionBuilder = Parent.CreateTransactionBuilder();
transactionBuilder.AddCoins(coin);
foreach (var sig in PartialSigs)
{
transactionBuilder.AddKnownSignature(sig.Key, sig.Value, coin.Outpoint);
}
Transaction signed = null;
try
{
var signedTx = Parent.Settings.IsSmart ? Parent.GetOriginalTransaction() : Transaction.Clone();
signed = transactionBuilder.SignTransaction(signedTx, SigHash.All);
}
catch (Exception ex)
{
errors = new List <PSBTError>()
{
new PSBTError(Index, $"Error while finalizing the input \"{getSignableCoinError ?? ex.Message}\"")
};
return(false);
}
var indexedInput = signed.Inputs.FindIndexedInput(coin.Outpoint);
if (!indexedInput.VerifyScript(coin, out var error))
{
errors = new List <PSBTError>()
{
new PSBTError(Index, $"The finalized input script does not properly validate \"{error}\"")
};
return(false);
}
FinalScriptSig = indexedInput.ScriptSig is Script oo && oo != Script.Empty ? oo : null;
FinalScriptWitness = indexedInput.WitScript is WitScript o && o != WitScript.Empty ? o : null;
if (transactionBuilder.FindSignableCoin(indexedInput) is ScriptCoin scriptCoin)
{
if (scriptCoin.IsP2SH)
{
RedeemScript = scriptCoin.GetP2SHRedeem();
}
if (scriptCoin.RedeemType == RedeemType.WitnessV0)
{
WitnessScript = scriptCoin.Redeem;
}
}
ClearForFinalize();
errors = null;
return(true);
}
