Shuffle the modules about a bit.

1 files changed, 266 insertions, 0 deletions

diff --git a/modules/timedbans.cpp b/modules/timedbans.cpp
new file mode 100644
index 000000000..27d476f7d
--- /dev/null
+++ b/modules/timedbans.cpp
@@ -0,0 +1,266 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2020 iwalkalone <iwalkalone69@gmail.com>
+ *   Copyright (C) 2018 linuxdaemon <linuxdaemon.irc@gmail.com>
+ *   Copyright (C) 2017 B00mX0r <b00mx0r@aureus.pw>
+ *   Copyright (C) 2016, 2019 Matt Schatz <genius3000@g3k.solutions>
+ *   Copyright (C) 2013, 2017, 2019-2023 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
+ *   Copyright (C) 2012-2016 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2009 John Brooks <john@jbrooks.io>
+ *   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2005, 2007-2008 Craig Edwards <brain@inspircd.org>
+ *
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "inspircd.h"
+#include "listmode.h"
+#include "modules/extban.h"
+#include "numerichelper.h"
+#include "timeutils.h"
+
+// Holds a timed ban
+class TimedBan final
+{
+public:
+	std::string mask;
+	std::string setter;
+	time_t expire;
+	Channel* chan;
+};
+
+typedef std::vector<TimedBan> timedbans;
+timedbans TimedBanList;
+
+class CommandTban final
+	: public Command
+{
+private:
+	ChanModeReference banmode;
+	ExtBan::ManagerRef extbanmgr;
+
+	bool IsBanSet(Channel* chan, const std::string& mask)
+	{
+		ListModeBase* banlm = static_cast<ListModeBase*>(*banmode);
+		if (!banlm)
+			return false;
+
+		const ListModeBase::ModeList* bans = banlm->GetList(chan);
+		if (bans)
+		{
+			for (const auto& ban : *bans)
+			{
+				if (banlm->CompareEntry(ban.mask, mask))
+					return true;
+			}
+		}
+
+		return false;
+	}
+
+public:
+	bool sendnotice;
+
+	CommandTban(Module* Creator)
+		: Command(Creator, "TBAN", 3)
+		, banmode(Creator, "ban")
+		, extbanmgr(Creator)
+	{
+		syntax = { "<channel> <duration> <banmask>" };
+	}
+
+	CmdResult Handle(User* user, const Params& parameters) override
+	{
+		auto* channel = ServerInstance->Channels.Find(parameters[0]);
+		if (!channel)
+		{
+			user->WriteNumeric(Numerics::NoSuchChannel(parameters[0]));
+			return CmdResult::FAILURE;
+		}
+
+		ModeHandler::Rank cm = channel->GetPrefixValue(user);
+		if (cm < HALFOP_VALUE)
+		{
+			user->WriteNumeric(Numerics::ChannelPrivilegesNeeded(channel, HALFOP_VALUE, "set timed bans"));
+			return CmdResult::FAILURE;
+		}
+
+		TimedBan T;
+		unsigned long duration;
+		if (!Duration::TryFrom(parameters[1], duration))
+		{
+			user->WriteNotice("Invalid ban time");
+			return CmdResult::FAILURE;
+		}
+		unsigned long expire = duration + ServerInstance->Time();
+
+		std::string mask = parameters[2];
+		if (!extbanmgr || !extbanmgr->Canonicalize(mask))
+			ModeParser::CleanMask(mask);
+
+		if (IsBanSet(channel, mask))
+		{
+			user->WriteNotice("Ban already set");
+			return CmdResult::FAILURE;
+		}
+
+		Modes::ChangeList setban;
+		setban.push_add(*banmode, mask);
+
+		// Pass the user (instead of ServerInstance->FakeClient) to ModeHandler::Process() to
+		// make it so that the user sets the mode themselves
+		ServerInstance->Modes.Process(user, channel, nullptr, setban);
+		if (ServerInstance->Modes.GetLastChangeList().empty())
+		{
+			user->WriteNotice("Invalid ban mask");
+			return CmdResult::FAILURE;
+		}
+
+		// Attempt to find the actual set ban mask.
+		for (const auto& mc : ServerInstance->Modes.GetLastChangeList().getlist())
+		{
+			if (mc.mh == *banmode)
+			{
+				// We found the actual mask.
+				mask = mc.param;
+				break;
+			}
+		}
+
+		T.mask = mask;
+		T.setter = user->nick;
+		T.expire = expire + (IS_REMOTE(user) ? 5 : 0);
+		T.chan = channel;
+		TimedBanList.push_back(T);
+
+		if (sendnotice)
+		{
+			const std::string message = fmt::format("Timed ban {} added by {} on {} lasting for {}.",
+				mask, user->nick, channel->name, Duration::ToString(duration));
+
+			// If halfop is loaded, send notice to halfops and above, otherwise send to ops and above
+			PrefixMode* mh = ServerInstance->Modes.FindNearestPrefixMode(HALFOP_VALUE);
+			char pfxchar = mh ? mh->GetPrefix() : '@';
+
+			channel->WriteRemoteNotice(message, pfxchar);
+		}
+
+		return CmdResult::SUCCESS;
+	}
+
+	RouteDescriptor GetRouting(User* user, const Params& parameters) override
+	{
+		return ROUTE_BROADCAST;
+	}
+};
+
+class BanWatcher final
+	: public ModeWatcher
+{
+public:
+	BanWatcher(Module* parent)
+		: ModeWatcher(parent, "ban", MODETYPE_CHANNEL)
+	{
+	}
+
+	void AfterMode(User* source, User* dest, Channel* chan, const Modes::Change& change) override
+	{
+		if (change.adding)
+			return;
+
+		for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end(); ++i)
+		{
+			if (i->chan != chan)
+				continue;
+
+			const std::string& target = i->mask;
+			if (irc::equals(change.param, target))
+			{
+				TimedBanList.erase(i);
+				break;
+			}
+		}
+	}
+};
+
+class ModuleTimedBans final
+	: public Module
+{
+private:
+	ChanModeReference banmode;
+	CommandTban cmd;
+	BanWatcher banwatcher;
+
+public:
+	ModuleTimedBans()
+		: Module(VF_VENDOR | VF_COMMON, "Adds the /TBAN command which allows channel operators to add bans which will be expired after the specified period.")
+		, banmode(this, "ban")
+		, cmd(this)
+		, banwatcher(this)
+	{
+	}
+
+	void ReadConfig(ConfigStatus& status) override
+	{
+		const auto& tag = ServerInstance->Config->ConfValue("timedbans");
+		cmd.sendnotice = tag->getBool("sendnotice", true);
+	}
+
+	void OnBackgroundTimer(time_t curtime) override
+	{
+		timedbans expired;
+		for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end();)
+		{
+			if (curtime > i->expire)
+			{
+				expired.push_back(*i);
+				i = TimedBanList.erase(i);
+			}
+			else
+				++i;
+		}
+
+		for (const auto& timedban : expired)
+		{
+			if (cmd.sendnotice)
+			{
+				const std::string message = fmt::format("Timed ban {} set by {} on {} has expired.",
+					timedban.mask, timedban.setter, timedban.chan->name);
+
+				// If halfop is loaded, send notice to halfops and above, otherwise send to ops and above
+				PrefixMode* mh = ServerInstance->Modes.FindNearestPrefixMode(HALFOP_VALUE);
+				char pfxchar = mh ? mh->GetPrefix() : '@';
+
+				timedban.chan->WriteRemoteNotice(message, pfxchar);
+			}
+
+			Modes::ChangeList setban;
+			setban.push_remove(*banmode, timedban.mask);
+			ServerInstance->Modes.Process(ServerInstance->FakeClient, timedban.chan, nullptr, setban);
+		}
+	}
+
+	void OnChannelDelete(Channel* chan) override
+	{
+		// Remove all timed bans affecting the channel from internal bookkeeping
+		std::erase_if(TimedBanList, [chan](const TimedBan& tb) { return tb.chan == chan; });
+	}
+};
+
+MODULE_INIT(ModuleTimedBans)