public async static Task <EthereumTransactionInfo> GetEthTransactionDetails(ConnectionState connectionState, CancellationToken token, TlsClientProtocol tls)
{
byte[] apdu = { 0x80, 0xE0, 0x00, 0x00 };
byte[] response;
try
{
response = await SendWrappedAPDU(apdu, 29, connectionState, token, tls);
}
catch (Non9000SwException)
{
throw new TransactionNotActiveException();
}
EthereumTransactionInfo transactionInfo = new EthereumTransactionInfo();
transactionInfo.type = Helper.MakeUint16(response, 0);
if (response[2] != 0x00)
{
transactionInfo.transactionTooBigToDisplay = true;
}
else
{
transactionInfo.transactionTooBigToDisplay = false;
}
transactionInfo.currentOffset = Helper.MakeUint16(response, 3);
transactionInfo.address = new byte[20];
Array.Copy(response, 5, transactionInfo.address, 0, 20);
transactionInfo.remainingTime = Helper.MakeUint32(response, 25);
return(transactionInfo);
}
public static string ParseEthereumTransaction(EthereumTransactionInfo info, byte[] input)
{
string htmlOutput = "";
string details = "";
Dictionary <int, string> chainIDDict = new Dictionary <int, string>()
{
{ 1, "Ethereum mainnet" },
{ 2, "Morden(disused), Expanse mainnet" },
{ 3, "Ropsten" },
{ 4, "Rinkeby" },
{ 30, "Rootstock mainnet" },
{ 31, "Rootstock testnet" },
{ 42, "Kovan" },
{ 61, "Ethereum Classic mainnet" },
{ 62, "Ethereum Classic testnet" },
{ 1337, "Geth private chains (default)" },
};
if (info.transactionTooBigToDisplay == true)
{
throw new EthParserException("Transaction too big to display.");
}
if (info.type == 0x6666)
{
throw new EthParserException("A message is being signed. Cannot display.");
}
else
{
RLPCollection collection = RLP.Decode(input);
if (collection.Count != 1)
{
throw new EthParserException("Invalid transaction.");
}
collection = (RLPCollection)collection[0];
if (collection.Count != 9)
{
throw new EthParserException("Invalid transaction.");
}
string fromAddress = "0x" + string.Join(string.Empty, Array.ConvertAll(info.address, b => b.ToString("x2")));
string nonce = new BigInteger(collection[0].RLPData).ToString(10);
string gasPrice = "";
var gasPriceInGwei = new BigInteger(collection[1].RLPData).DivideAndRemainder(new BigInteger("1000000000"));
var gasPriceInGweiRemainder = gasPriceInGwei[1].ToString(10).PadLeft(9, '0').TrimEnd('0');
if (gasPriceInGweiRemainder == "")
{
gasPrice = gasPriceInGwei[0].ToString(10) + " GWEI";
}
else
{
gasPrice = gasPriceInGwei[0].ToString(10) + "." + gasPriceInGweiRemainder + " GWEI";
}
string gasLimit = new BigInteger(collection[2].RLPData).ToString(10);
string toAddress = "0x" + string.Join(string.Empty, Array.ConvertAll(collection[3].RLPData, b => b.ToString("x2")));
string value = "";
var valueInEth = new BigInteger(collection[4].RLPData).DivideAndRemainder(new BigInteger("1000000000000000000"));
var valueInEthRemainder = valueInEth[1].ToString(10).PadLeft(18, '0').TrimEnd('0');
if (valueInEthRemainder == "")
{
value = valueInEth[0].ToString(10) + " ETH";
}
else
{
value = valueInEth[0].ToString(10) + "." + valueInEthRemainder + " ETH";
}
string data = "None";
if (collection[5].RLPData != null)
{
data = "0x" + string.Join(string.Empty, Array.ConvertAll(collection[5].RLPData, b => b.ToString("x2")));
}
int v = collection[6].RLPData.ToIntFromRLPDecoded();
string chainID = "";
if (chainIDDict.ContainsKey(v))
{
chainID = chainIDDict[v];
}
else
{
chainID = v.ToString();
}
if ((collection[7].RLPData != null) || (collection[8].RLPData != null))
{
throw new EthParserException("Invalid transaction.");
}
details += "<b>Send to: </b>" + toAddress + "<br>";
details += "<b>Send from: </b>" + fromAddress + "<br>";
details += "<b>Value: </b>" + value + "<br>";
details += "<b>ChainID: </b>" + chainID + "<br>";
details += "<b>Gas limit: </b>" + gasLimit + "<br>";
details += "<b>Gas price: </b>" + gasPrice + "<br>";
details += "<b>Nonce: </b>" + nonce + "<br>";
details += "<b>Data: </b>" + data + "<br><br>";
}
htmlOutput += details;
htmlOutput += "Time remaining to confirm: <b>" + (info.remainingTime / 1000).ToString() + "</b> seconds. <br><br>";
return(htmlOutput);
}
