From 889d521e05f2e922683d48c74eb00290e7a2f548 Mon Sep 17 00:00:00 2001
From: Sadie Powell
Date: Wed, 17 Jul 2024 00:06:50 +0100
Subject: Shuffle the modules about a bit.

---
 modules/hidelist.cpp | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 modules/hidelist.cpp

(limited to 'modules/hidelist.cpp')

diff --git a/modules/hidelist.cpp b/modules/hidelist.cpp
new file mode 100644
index 000000000..c165cd8f1
--- /dev/null
+++ b/modules/hidelist.cpp
@@ -0,0 +1,96 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2019-2023 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2018 linuxdaemon <linuxdaemon.irc@gmail.com>
+ *   Copyright (C) 2014 Attila Molnar <attilamolnar@hush.com>
+ *
+ * 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 "numerichelper.h"
+
+class ListWatcher final
+	: public ModeWatcher
+{
+	// Minimum rank required to view the list
+	const ModeHandler::Rank minrank;
+
+public:
+	ListWatcher(Module* mod, const std::string& modename, ModeHandler::Rank rank)
+		: ModeWatcher(mod, modename, MODETYPE_CHANNEL)
+		, minrank(rank)
+	{
+	}
+
+	bool BeforeMode(User* user, User* destuser, Channel* chan, Modes::Change& change) override
+	{
+		// Only handle listmode list requests
+		if (!change.param.empty())
+			return true;
+
+		// If the user requesting the list is a member of the channel see if they have the
+		// rank required to view the list
+		Membership* memb = chan->GetUser(user);
+		if ((memb) && (memb->GetRank() >= minrank))
+			return true;
+
+		if (user->HasPrivPermission("channels/auspex"))
+			return true;
+
+		user->WriteNumeric(Numerics::ChannelPrivilegesNeeded(chan, minrank, fmt::format("view the channel {} list", GetModeName())));
+		return false;
+	}
+};
+
+class ModuleHideList final
+	: public Module
+{
+	std::vector<ListWatcher*> watchers;
+
+public:
+	void ReadConfig(ConfigStatus& status) override
+	{
+		std::vector<std::pair<std::string, unsigned int>> newconfigs;
+		for (const auto& [_, tag] : ServerInstance->Config->ConfTags("hidelist"))
+		{
+			std::string modename = tag->getString("mode");
+			if (modename.empty())
+				throw ModuleException(this, "Empty <hidelist:mode> at " + tag->source.str());
+			// If rank is set to 0 everyone inside the channel can view the list,
+			// but non-members may not
+			ModeHandler::Rank rank = tag->getNum<ModeHandler::Rank>("rank", HALFOP_VALUE);
+			newconfigs.emplace_back(modename, rank);
+		}
+
+		stdalgo::delete_all(watchers);
+		watchers.clear();
+
+		for (const auto& [mode, rank] : newconfigs)
+			watchers.push_back(new ListWatcher(this, mode, rank));
+	}
+
+	ModuleHideList()
+		: Module(VF_VENDOR, "Allows list mode lists to be hidden from users without a prefix mode ranked equal to or higher than a defined level.")
+	{
+	}
+
+	~ModuleHideList() override
+	{
+		stdalgo::delete_all(watchers);
+	}
+};
+
+MODULE_INIT(ModuleHideList)
-- 
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