protected virtual void HandleChannelMessageOrAction(object sender, IChannelMessageEventArgs e, MessageFlags flags)
{
BounceCriterion crit = InterestingCriterion(e.SenderNickname, channel: null);
if (crit != null && crit.ForgetOnChannelMessage)
{
RelevantJoins.RemoveAll(j => j.Nickname == e.SenderNickname);
}
}
protected virtual void HandleStandardCriterion(string channel, string nickname, BounceCriterion criterion)
{
// add this join
DateTimeOffset now = DateTimeOffset.Now;
RelevantJoins.Add(new JoinQuitEvent(channel, nickname, now));
// calculate unban time
DateTimeOffset unbanTimestamp = now.AddMinutes(criterion.BanDurationMinutes.Value);
// check if the criterion is fulfilled
if (CheckAndDebounce(channel, nickname, criterion, now))
{
// unban after the set duration
ConnectionManager.Timers.Register(unbanTimestamp, () => Unban(channel, nickname));
}
}
protected virtual bool CheckAndDebounce(string channel, string nickname, BounceCriterion criterion, DateTimeOffset now)
{
// clear out all entries older than the time slice
DateTimeOffset sliceStart = now.AddMinutes(-criterion.TimeSliceMinutes);
RelevantJoins.RemoveAll(j => j.Timestamp < sliceStart);
// how many are left?
int count = RelevantJoins.Count(j => j.Nickname == nickname && j.Channel == channel);
if (count < criterion.MaxJoinsQuitsInTimeSlice)
{
return(false);
}
// kickban!
string message = (criterion.KickMessages.Count > 0)
? criterion.KickMessages[RNG.Next(criterion.KickMessages.Count)]
: null;
ConnectionManager.ChangeChannelMode(channel, $"+b {nickname}!*@*");
ConnectionManager.KickChannelUser(channel, nickname, message);
return(true);
}
protected virtual void HandleHourCriterion(string channel, string nickname, BounceCriterion criterion)
{
// find the starting hour relative to today
DateTimeOffset now = DateTimeOffset.Now;
DateTimeOffset today = new DateTimeOffset(now.Date, now.Offset);
DateTimeOffset todayStart = today.AddHours(criterion.StartingHour.Value);
DateTimeOffset todayEnd = today.AddHours(criterion.EndingHour.Value);
if (todayEnd == todayStart)
{
// no time range
return;
}
DateTimeOffset cutoff = (now >= todayStart)
? todayStart
: todayStart.AddDays(-1);
DateTimeOffset currentEnd;
bool isActive;
if (todayEnd > todayStart)
{
// daytime hours
isActive = (now >= todayStart && now < todayEnd);
currentEnd = todayEnd;
}
else
{
Debug.Assert(todayEnd < todayStart);
// overnight hours
if (now < todayEnd)
{
isActive = true;
currentEnd = todayEnd;
}
else if (now >= todayStart)
{
isActive = true;
currentEnd = todayEnd.AddDays(1);
}
else
{
isActive = false;
}
}
if (!isActive)
{
// the entries are not interesting anymore
RelevantJoins.Clear();
return;
}
// add this join
RelevantJoins.Add(new JoinQuitEvent(channel, nickname, now));
// check if the criterion is fulfilled
if (CheckAndDebounce(channel, nickname, criterion, now))
{
// unban at the end time
ConnectionManager.Timers.Register(currentEnd, () => Unban(channel, nickname));
}
}
