/// <summary>
/// Performs a ban
/// </summary>
/// <param name="hostmask">The mask to ban</param>
/// <param name="duration_or_null">The duration, or null</param>
/// <param name="reason">The reason for the ban</param>
/// <param name="by">The user who set the ban</param>
public static void PerformBan(string hostmask, string duration_or_null, string reason, string by)
{
lock (State.GlobalSync)
{
if (state != BanSystemState.Synchronized) throw new Exception("Bad state");
if (State.UseQEnforce.Value && CanQBan())
{
//if we use Q enforcement, queue a Q command
if (duration_or_null == null) new PermBanCommand(hostmask, reason);
else new TempBanCommand(hostmask, duration_or_null, reason);
}
else
{
//hostmask
HostMask mask = new HostMask(hostmask);
//add to list
Ban ban = new Ban();
TimeSpan actual_duration = duration_or_null == null ? TimeSpan.FromSeconds(0) : ParseDuration(duration_or_null);
ban.Expires = duration_or_null == null ? DateTime.MaxValue : DateTime.UtcNow + actual_duration;
ban.Enforcer = BanEnforcement.ByMe;
ban.Affected = GetAffectedNicks(mask);
ban.Mask = mask;
ban.Reason = reason;
ban.SetBy = by;
//check if a longer ban already in place
Ban existing = State.BanList.Lookup(ban.Mask.Mask);
if (existing != null && existing.Expires > ban.Expires)
{
throw new Exception("A ban with a longer duration is already in place");
}
//add to banlist
if (existing != null) State.BanList.Remove(existing);
State.BanList.Add(ban);
//ban from channel
if (!CanChannelBan() && FreeBanSlot(1) == 0)
{
foreach (User user in State.UserList.GetItems())
{
if (user.Left == DateTime.MaxValue && mask.Matches(user.HostMask))
{
//kick from channel
Irc.Kick(user.Nick, "Enforcing ban: " + reason);
}
}
}
else
{
Irc.Ban(hostmask);
if (State.UseQuietBan.Value == false || duration_or_null == null)
{
foreach (User user in State.UserList.GetItems())
{
if (user.Left == DateTime.MaxValue && mask.Matches(user.HostMask))
{
//kick from channel
Irc.Kick(user.Nick, "Enforcing ban: " + reason);
}
}
}
else
{
//put channel message
Irc.SendChannelMessage(GetAffectedNicks(mask) + " has been timed out from chatting for " + ((int)(actual_duration.TotalMinutes + 0.5)).ToString() + " minutes: " + reason, false);
}
}
}
}
}
/// <summary>
/// Gets a user-friendly display of nicknames affected by a ban
/// </summary>
/// <param name="banmask">The banmask being searched</param>
/// <returns>User-friendly string</returns>
public static string GetAffectedNicks(HostMask banmask)
{
lock (State.GlobalSync)
{
string result = null;
foreach (User user in State.UserList.GetItems())
{
if (banmask.Matches(user.HostMask)) result = (result == null ? user.Nick : result + ", " + user.Nick);
}
return result == null ? "" : result;
}
}