private void CheckTransaction(Transaction transaction, Money suppliedBudget)
{
if (!transaction.IsSmartContractExecTransaction())
{
return;
}
TxOut scTxOut = transaction.TryGetSmartContractTxOut();
if (scTxOut == null)
{
new ConsensusError("no-smart-contract-tx-out", "No smart contract TxOut").Throw();
}
ICallDataSerializer serializer = CallDataSerializer.Default;
Result <ContractTxData> callDataDeserializationResult = serializer.Deserialize(scTxOut.ScriptPubKey.ToBytes());
if (callDataDeserializationResult.IsFailure)
{
new ConsensusError("invalid-calldata-format", string.Format("Invalid {0} format", typeof(ContractTxData).Name)).Throw();
}
ContractTxData callData = callDataDeserializationResult.Value;
if (callData.GasPrice < GasPriceMinimum)
{
// Supplied gas price is too low.
this.ThrowGasPriceLessThanMinimum();
}
if (callData.GasPrice > GasPriceMaximum)
{
// Supplied gas price is too high.
this.ThrowGasPriceMoreThanMaximum();
}
// TODO: When checking gas limit, if checking for a CREATE, do BaseFee + CreationAndValidationFee
if (callData.GasLimit < GasLimitMinimum)
{
// Supplied gas limit is too low.
this.ThrowGasLessThanBaseFee();
}
if (callData.GasLimit > GasLimitMaximum)
{
// Supplied gas limit is too high - at a certain point we deem that a contract is taking up too much time.
this.ThrowGasGreaterThanHardLimit();
}
// Note carrier.GasCostBudget cannot overflow given values are within constraints above.
if (suppliedBudget < new Money(callData.GasCostBudget))
{
// Supplied satoshis are less than the budget we said we had for the contract execution
this.ThrowGasGreaterThanFee();
}
}
public static ContractTxData GetContractTxData(ICallDataSerializer callDataSerializer, TxOut scTxOut)
{
Result <ContractTxData> callDataDeserializationResult = callDataSerializer.Deserialize(scTxOut.ScriptPubKey.ToBytes());
if (callDataDeserializationResult.IsFailure)
{
new ConsensusError("invalid-calldata-format", string.Format("Invalid {0} format", typeof(ContractTxData).Name)).Throw();
}
ContractTxData txData = callDataDeserializationResult.Value;
return(txData);
}