Shuffle the modules about a bit.

1 files changed, 152 insertions, 0 deletions

diff --git a/modules/banexception.cpp b/modules/banexception.cpp
new file mode 100644
index 000000000..9e90e7f31
--- /dev/null
+++ b/modules/banexception.cpp
@@ -0,0 +1,152 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2017-2023 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012-2013 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2007 Craig Edwards <brain@inspircd.org>
+ *   Copyright (C) 2006 Oliver Lupton <om@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 "modules/isupport.h"
+
+enum
+{
+	// From RFC 2812.
+	RPL_EXCEPTLIST = 348,
+	RPL_ENDOFEXCEPTLIST = 349
+};
+
+class BanException final
+	: public ListModeBase
+{
+private:
+	ExtBan::ManagerRef extbanmgr;
+
+public:
+	BanException(Module* Creator)
+		: ListModeBase(Creator, "banexception", 'e', RPL_EXCEPTLIST, RPL_ENDOFEXCEPTLIST)
+		, extbanmgr(Creator)
+	{
+		syntax = "<mask>";
+	}
+
+	bool CompareEntry(const std::string& entry, const std::string& value) const override
+	{
+		if (extbanmgr)
+		{
+			auto res = extbanmgr->CompareEntry(this, entry, value);
+			if (res != ExtBan::Comparison::NOT_AN_EXTBAN)
+				return res == ExtBan::Comparison::MATCH;
+		}
+		return irc::equals(entry, value);
+	}
+
+	bool ValidateParam(LocalUser* user, Channel* channel, std::string& parameter) override
+	{
+		if (!extbanmgr || !extbanmgr->Canonicalize(parameter))
+			ModeParser::CleanMask(parameter);
+		return true;
+	}
+};
+
+class ModuleBanException final
+	: public Module
+	, public ExtBan::EventListener
+	, public ISupport::EventListener
+{
+private:
+	BanException be;
+
+public:
+	ModuleBanException()
+		: Module(VF_VENDOR, "Adds channel mode e (banexception) which allows channel operators to exempt user masks from channel mode b (ban).")
+		, ExtBan::EventListener(this)
+		, ISupport::EventListener(this)
+		, be(this)
+	{
+	}
+
+	void OnBuildISupport(ISupport::TokenMap& tokens) override
+	{
+		tokens["EXCEPTS"] = ConvToStr(be.GetModeChar());
+	}
+
+	ModResult OnExtBanCheck(User* user, Channel* chan, ExtBan::Base* extban) override
+	{
+		ListModeBase::ModeList* list = be.GetList(chan);
+		if (!list)
+			return MOD_RES_PASSTHRU;
+
+		for (const auto& ban : *list)
+		{
+			bool inverted;
+			std::string name;
+			std::string value;
+			if (!ExtBan::Parse(ban.mask, name, value, inverted))
+				continue;
+
+			if (name.size() == 1)
+			{
+				// It is an extban but not this extban.
+				if (name[0] != extban->GetLetter())
+					continue;
+			}
+			else
+			{
+				// It is an extban but not this extban.
+				if (!irc::equals(name, extban->GetName()))
+					continue;
+			}
+
+			return extban->IsMatch(user, chan, value) != inverted ? MOD_RES_ALLOW : MOD_RES_PASSTHRU;
+		}
+		return MOD_RES_PASSTHRU;
+	}
+
+	ModResult OnCheckChannelBan(User* user, Channel* chan) override
+	{
+		ListModeBase::ModeList* list = be.GetList(chan);
+		if (!list)
+		{
+			// No list, proceed normally
+			return MOD_RES_PASSTHRU;
+		}
+
+		for (const auto& entry : *list)
+		{
+			if (chan->CheckBan(user, entry.mask))
+			{
+				// They match an entry on the list, so let them in.
+				return MOD_RES_ALLOW;
+			}
+		}
+		return MOD_RES_PASSTHRU;
+	}
+
+	void ReadConfig(ConfigStatus& status) override
+	{
+		be.DoRehash();
+	}
+};
+
+MODULE_INIT(ModuleBanException)