public override bool Equals(object obj)
{
EscrowScriptPubKeyParameters item = obj as EscrowScriptPubKeyParameters;
if (item == null)
{
return(false);
}
return(ToScript().Equals(item.ToScript()));
}
private static EscrowScriptPubKeyParameters GetFromScript(Script script)
{
EscrowScriptPubKeyParameters parameters = new EscrowScriptPubKeyParameters();
try
{
var data = script.ToOps().Where(o => o.PushData != null).ToArray();
parameters.Initiator = new PubKey(data[0].PushData);
parameters.Receiver = new PubKey(data[2].PushData);
parameters.LockTime = new LockTime(data[3].GetInt().Value);
//Verify it is the same as if we had done it
if (parameters.ToScript() != script)
{
throw new Exception();
}
return(parameters);
}
catch { return(null); }
}
public virtual void ConfigureEscrowedCoin(uint160 channelId, ScriptCoin escrowedCoin, Key escrowKey, Script redeemDestination)
{
if (escrowedCoin == null)
{
throw new ArgumentNullException(nameof(escrowedCoin));
}
if (escrowKey == null)
{
throw new ArgumentNullException(nameof(escrowKey));
}
var escrow = EscrowScriptPubKeyParameters.GetFromCoin(escrowedCoin);
if (escrow == null ||
escrow.Initiator != escrowKey.PubKey)
{
throw new PuzzleException("Invalid escrow");
}
InternalState.ChannelId = channelId ?? throw new ArgumentNullException(nameof(channelId));
InternalState.EscrowedCoin = escrowedCoin;
InternalState.EscrowKey = escrowKey;
InternalState.RedeemDestination = redeemDestination ?? throw new ArgumentNullException(nameof(redeemDestination));
}
public TrustedBroadcastRequest CreateRedeemTransaction(Network network, FeeRate feeRate)
{
if (feeRate == null)
{
throw new ArgumentNullException(nameof(feeRate));
}
var escrow = EscrowScriptPubKeyParameters.GetFromCoin(InternalState.EscrowedCoin);
var escrowCoin = InternalState.EscrowedCoin;
Transaction tx = new Transaction();
tx.LockTime = escrow.LockTime;
tx.Inputs.Add(new TxIn());
//Put a dummy signature and the redeem script
tx.Inputs[0].ScriptSig =
new Script(
Op.GetPushOp(TrustedBroadcastRequest.PlaceholderSignature),
Op.GetPushOp(escrowCoin.Redeem.ToBytes()));
tx.Inputs[0].Witnessify();
tx.Inputs[0].Sequence = 0;
tx.Outputs.Add(new TxOut(escrowCoin.Amount, InternalState.RedeemDestination));
var virtualSize = tx.HasWitness ? tx.GetVirtualSize(network.Consensus.Options.WitnessScaleFactor) : tx.GetSerializedSize();
tx.Outputs[0].Value -= feeRate.GetFee(tx.GetVirtualSize(virtualSize));
var redeemTransaction = new TrustedBroadcastRequest
{
Key = InternalState.EscrowKey,
PreviousScriptPubKey = escrowCoin.ScriptPubKey,
Transaction = tx,
KnownPrevious = new Coin[] { escrowCoin }
};
return(redeemTransaction);
}