public static string DoSignVTHOTx(List <string[]> transactions, string privateKey, bool isSend, int?gasLimit)
{
byte chainTag = 0;
byte[] blockRef = null;
var clauses = new List <ToClause>();
foreach (var transaction in transactions)
{
var amount = Amount.VTHO();
amount.SetDecimalAmount(transaction[1]);
clauses.Add(
ERC20Contract.BuildTranferToClause(ERC20Token.VTHO, Address.FromHexString(transaction[0]), amount));
chainTag = ByteUtils.ToByteArray(transaction[2])[0];
blockRef = transaction[3] == null?BlockchainClient.GetBlockRef(null).ToByteArray() : ByteUtils.ToByteArray(transaction[3]);
}
int gas = clauses.Count * gasLimit ?? 80000;
var rawTransaction = RawTransactionFactory.Instance.CreateRawTransaction(chainTag, blockRef,
720, gas, (byte)0x0, CryptoUtils.GenerateTxNonce(), clauses.ToArray());
if (isSend)
{
var result = TransactionClient.SignThenTransfer(rawTransaction, ECKeyPair.Create(privateKey));
return(JsonConvert.SerializeObject(result));
}
else
{
var result = TransactionClient.Sign(rawTransaction, ECKeyPair.Create(privateKey));
return(ByteUtils.ToHexString(result.Encode(), Prefix.ZeroLowerX));
}
}
private static void ParseERC20(string hexRawTxn)
{
var rawTransaction = RLPUtils.Decode(hexRawTxn);
var rawClauses = rawTransaction.Clauses;
int index = 1;
WriteLine("----------------------------------------------------------");
WriteLine("ChainTag:" + rawTransaction.ChainTag);
WriteLine("BlockRef:" + ByteUtils.ToHexString(rawTransaction.BlockRef, Prefix.ZeroLowerX));
WriteLine("Expiration:" + ByteUtils.BytesToBigInt(rawTransaction.Expiration));
WriteLine("Gas:" + ByteUtils.BytesToBigInt(rawTransaction.Gas));
foreach (var rawClause in rawClauses)
{
WriteLine("No." + index);
var addressBytes = rawClause.To;
var dataBytes = rawClause.Data;
if (dataBytes.Length != 68)
{
throw new Exception("The data length is not 68 bytes");
}
var methodId = new byte[4];
var address = new byte[20];
var value = new byte[32];
Array.Copy(dataBytes, 0, methodId, 0, 4);
Array.Copy(dataBytes, 16, address, 0, 20);
Array.Copy(dataBytes, 36, value, 0, 32);
string methodIdHex = ByteUtils.ToHexString(methodId, Prefix.ZeroLowerX);
var contract = new ERC20Contract();
var abiDefinition = contract.FindAbiDefinition("transfer");
String transferMethodId = "0x" + abiDefinition.GetHexMethodCodeNoPrefix();
if (!methodIdHex.Equals(transferMethodId, StringComparison.OrdinalIgnoreCase))
{
throw new Exception("the method id is not transfer");
}
var erc2Amount = Amount.VTHO();
erc2Amount.SetHexAmount(ByteUtils.ToHexString(value, Prefix.ZeroLowerX));
WriteLine("ERC20 Contract:" + ByteUtils.ToHexString(addressBytes, Prefix.ZeroLowerX));
WriteLine("To Address:" + ByteUtils.ToHexString(address, Prefix.ZeroLowerX));
WriteLine("To Value:" + erc2Amount.Value);
WriteLine("-----");
index++;
}
WriteLine("----------------------------------------------------------");
}
