public async Task ProcessConfirmedTransactionAsync(Transaction tx)
{
// This should not be needed until we would only accept unconfirmed CJ outputs an no other unconf outs. But it'll be more bulletproof for future extensions.
// Turns out you shouldn't accept RBF at all never. (See below.)
// https://github.com/zkSNACKs/WalletWasabi/issues/145
// if it spends a banned output AND it's not CJ output
// ban all the outputs of the transaction
tx.PrecomputeHash(false, true);
UnconfirmedCoinJoins.Remove(tx.GetHash()); // Locked outside.
if (RoundConfig.DosSeverity <= 1)
{
return;
}
foreach (TxIn input in tx.Inputs)
{
OutPoint prevOut = input.PrevOut;
// if coin is not banned
var foundElem = await UtxoReferee.TryGetBannedAsync(prevOut, notedToo : true).ConfigureAwait(false);
if (foundElem is { })
public async Task <bool> IsUnconfirmedCoinJoinLimitReachedAsync()
{
using (await CoinJoinsLock.LockAsync())
{
if (UnconfirmedCoinJoins.Count() < 24)
{
return(false);
}
else
{
foreach (var cjHash in UnconfirmedCoinJoins)
{
RPCResponse getRawTransactionResponse = await RpcClient.SendCommandAsync(RPCOperations.getrawtransaction, cjHash.ToString(), true);
// if failed remove from everywhere (should not happen normally)
if (string.IsNullOrWhiteSpace(getRawTransactionResponse?.ResultString))
{
UnconfirmedCoinJoins.Remove(cjHash);
CoinJoins.Remove(cjHash);
await File.WriteAllLinesAsync(CoinJoinsFilePath, CoinJoins.Select(x => x.ToString()));
}
// if confirmed remove only from unconfirmed
if (getRawTransactionResponse.Result.Value <int>("confirmations") > 0)
{
UnconfirmedCoinJoins.Remove(cjHash);
}
}
}
return(UnconfirmedCoinJoins.Count() >= 24);
}
}
public async Task <bool> IsUnconfirmedCoinJoinLimitReachedAsync()
{
using (await CoinJoinsLock.LockAsync())
{
if (UnconfirmedCoinJoins.Count < 24)
{
return(false);
}
foreach (var cjHash in UnconfirmedCoinJoins.ToArray())
{
try
{
var txInfo = await RpcClient.GetRawTransactionInfoAsync(cjHash);
// if confirmed remove only from unconfirmed
if (txInfo.Confirmations > 0)
{
UnconfirmedCoinJoins.Remove(cjHash);
}
}
catch (Exception ex)
{
// If aborted remove from everywhere (should not happen normally).
UnconfirmedCoinJoins.Remove(cjHash);
CoinJoins.Remove(cjHash);
await File.WriteAllLinesAsync(CoinJoinsFilePath, CoinJoins.Select(x => x.ToString()));
Logger.LogWarning <CcjCoordinator>(ex);
}
}
return(UnconfirmedCoinJoins.Count >= 24);
}
}
public async Task ProcessConfirmedTransactionAsync(Transaction tx)
{
// This should not be needed until we would only accept unconfirmed CJ outputs an no other unconf outs. But it'll be more bulletproof for future extensions.
// Turns out you shouldn't accept RBF at all never. (See below.)
// https://github.com/zkSNACKs/WalletWasabi/issues/145
// if it spends a banned output AND it's not CJ output
// ban all the outputs of the transaction
tx.PrecomputeHash(false, true);
UnconfirmedCoinJoins.Remove(tx.GetHash()); // Locked outside.
if (RoundConfig.DosSeverity <= 1)
{
return;
}
foreach (TxIn input in tx.Inputs)
{
OutPoint prevOut = input.PrevOut;
// if coin is not banned
var foundElem = await UtxoReferee.TryGetBannedAsync(prevOut, notedToo : true).ConfigureAwait(false);
if (foundElem != null)
{
if (!AnyRunningRoundContainsInput(prevOut, out _))
{
int newSeverity = foundElem.Severity + 1;
await UtxoReferee.UnbanAsync(prevOut).ConfigureAwait(false); // since it's not an UTXO anymore
if (RoundConfig.DosSeverity >= newSeverity)
{
var txCoins = tx.Outputs.AsIndexedOutputs().Select(x => x.ToCoin().Outpoint);
await UtxoReferee.BanUtxosAsync(newSeverity, foundElem.TimeOfBan, forceNoted : foundElem.IsNoted, foundElem.BannedForRound, txCoins.ToArray()).ConfigureAwait(false);
}
}
}
}
}