public void SetToMultiSig_ArgumentExceptionTest(Signature sig, IRedeemScript rdm, ITransaction tx, int index, string expErr)
{
var scr = new SignatureScript();
Exception ex = Assert.Throws <ArgumentException>(() => scr.SetToMultiSig(sig, rdm, tx, index));
Assert.Contains(expErr, ex.Message);
}
public void SetToMultiSigTest(byte[] scrData, Signature sig, IRedeemScript rdm, ITransaction tx, int index, byte[] expected)
{
var scr = new SignatureScript(scrData);
scr.SetToMultiSig(sig, rdm, tx, index);
Assert.Equal(expected, scr.Data);
}
/// <inheritdoc/>
/// <exception cref="ArgumentException"/>
/// <exception cref="ArgumentNullException"/>
/// <exception cref="ArgumentOutOfRangeException"/>
public void SetToMultiSig(Signature sig, IRedeemScript redeem, ITransaction tx, int inputIndex)
{
if (sig is null)
{
throw new ArgumentNullException(nameof(sig), "Signature can not be null.");
}
if (redeem is null)
{
throw new ArgumentNullException(nameof(redeem), "Redeem script can not be null.");
}
if (tx is null)
{
throw new ArgumentNullException(nameof(tx), "Transaction can not be null.");
}
if (inputIndex < 0 || inputIndex >= tx.TxInList.Length)
{
throw new ArgumentOutOfRangeException(nameof(inputIndex), "Invalid input index.");
}
if (redeem.Data.Length > Constants.MaxScriptItemLength)
{
throw new ArgumentOutOfRangeException(nameof(redeem), "Redeem script is bigger than allowed length.");
}
if (redeem.GetRedeemScriptType() != RedeemScriptType.MultiSig)
{
throw new ArgumentException("Invalid redeem script type.");
}
if (!redeem.TryEvaluate(out IOperation[] rdmOps, out _, out string error))
{
throw new ArgumentException($"Can not evaluate redeem script: {error}");
}
// OP_m | pub1 | pub2 | ... | pub(n) | OP_n | OP_CheckMultiSig
if (!((PushDataOp)rdmOps[0]).TryGetNumber(out long m, out error))
{
throw new ArgumentException($"Invalid m ({error}).");
}
if (m < 0)
{
throw new ArgumentOutOfRangeException(nameof(m), "M can not be negative.");
}
if (m == 0)
{
throw new ArgumentOutOfRangeException(nameof(m), "M value zero is not allowed to prevent funds being stolen.");
}
if (!((PushDataOp)rdmOps[^ 2]).TryGetNumber(out long n, out error))
public virtual void SetToP2SH_P2WSH(IRedeemScript redeem) => throw new NotImplementedException();
public virtual void SetToMultiSig(Signature sig, IRedeemScript redeem, ITransaction tx, int inputIndex) => throw new NotImplementedException();
public virtual void SetToCheckLocktimeVerify(Signature sig, IRedeemScript redeem) => throw new NotImplementedException();
public void GetRedeemScriptTypeTest(IRedeemScript scr, RedeemScriptType expected)
{
RedeemScriptType actual = scr.GetRedeemScriptType();
Assert.Equal(expected, actual);
}
private bool VerifyP2wsh(ITransaction tx, int index, IRedeemScript redeem, ReadOnlySpan <byte> expectedHash,
ulong amount, out string error)
{
ReadOnlySpan <byte> actualHash = sha256.ComputeHash(redeem.Data);
if (!actualHash.SequenceEqual(expectedHash))
{
error = "Invalid hash.";
return(false);
}
if (!redeem.TryEvaluate(out IOperation[] redeemOps, out int redeemOpCount, out error))
{
error = $"Script evaluation failed." +
$"{Environment.NewLine}TxId: {tx.GetTransactionId()}" +
$"{Environment.NewLine}More info: {error}";
return(false);
}
// Note that there is no *Constants.WitnessScaleFactor here anymore
TotalSigOpCount += redeem.CountSigOps(redeemOps);
var stack = new OpData()
{
Tx = tx,
TxInIndex = index,
ForceLowS = ForceLowS,
StrictNumberEncoding = StrictNumberEncoding,
IsBip65Enabled = consensus.IsBip65Enabled(BlockHeight),
IsBip112Enabled = consensus.IsBip112Enabled(BlockHeight),
IsStrictDerSig = consensus.IsStrictDerSig(BlockHeight),
IsBip147Enabled = consensus.IsBip147Enabled(BlockHeight),
};
for (int j = 0; j < tx.WitnessList[index].Items.Length - 1; j++)
{
if (!tx.WitnessList[index].Items[j].Run(stack, out error))
{
error = $"Script evaluation failed." +
$"{Environment.NewLine}TxId: {tx.GetTransactionId()}" +
$"{Environment.NewLine}More info: {error}";
return(false);
}
}
stack.AmountBeingSpent = amount;
stack.IsSegWit = true;
stack.OpCount = redeemOpCount;
stack.ExecutingScript = redeemOps;
foreach (var op in redeemOps)
{
if (!op.Run(stack, out error))
{
error = $"Script evaluation failed." +
$"{Environment.NewLine}TxId: {tx.GetTransactionId()}" +
$"{Environment.NewLine}More info: {error}";
return(false);
}
}
// Stack has to only have 1 item left
if (stack.ItemCount == 1 && IsNotZero(stack.Pop()))
{
error = null;
return(true);
}
else
{
error = stack.ItemCount != 1 ?
"Stack has to have only 1 item after witness execution." :
"Top stack item is not true";
return(false);
}
}
