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/operprefix.cpp | 134 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 modules/operprefix.cpp

(limited to 'modules/operprefix.cpp')

diff --git a/modules/operprefix.cpp b/modules/operprefix.cpp
new file mode 100644
index 000000000..e1258ede0
--- /dev/null
+++ b/modules/operprefix.cpp
@@ -0,0 +1,134 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2019-2022 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012-2016 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2009-2010 Craig Edwards <brain@inspircd.org>
+ *   Copyright (C) 2009 Uli Schlachter <psychon@znc.in>
+ *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
+ *
+ * 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/>.
+ */
+
+
+/*
+ * Originally by Chernov-Phoenix Alexey (Phoenix@RusNet) mailto:phoenix /email address separator/ pravmail.ru
+ */
+
+#include "inspircd.h"
+
+#define OPERPREFIX_VALUE 1000000
+
+class OperPrefixMode final
+	: public PrefixMode
+{
+public:
+	OperPrefixMode(Module* Creator)
+		: PrefixMode(Creator, "operprefix", 'y', OPERPREFIX_VALUE)
+	{
+		prefix = ServerInstance->Config->ConfValue("operprefix")->getCharacter("prefix", '!');
+		ranktoset = ranktounset = std::numeric_limits<ModeHandler::Rank>::max();
+	}
+};
+
+class ModuleOperPrefixMode;
+class HideOperWatcher final
+	: public ModeWatcher
+{
+	ModuleOperPrefixMode* parentmod;
+
+public:
+	HideOperWatcher(ModuleOperPrefixMode* parent);
+	void AfterMode(User* source, User* dest, Channel* channel, const Modes::Change& change) override;
+};
+
+class ModuleOperPrefixMode final
+	: public Module
+{
+private:
+	OperPrefixMode opm;
+	HideOperWatcher hideoperwatcher;
+	UserModeReference hideopermode;
+
+public:
+	ModuleOperPrefixMode()
+		: Module(VF_VENDOR, "Adds the server operator-only y (operprefix) channel prefix mode.")
+		, opm(this)
+		, hideoperwatcher(this)
+		, hideopermode(this, "hideoper")
+	{
+		/* To give clients a chance to learn about the new prefix we don't give +y to opers
+		 * right now. That means if the module was loaded after opers have joined channels
+		 * they need to rejoin them in order to get the oper prefix.
+		 */
+	}
+
+	ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven, bool override) override
+	{
+		if ((user->IsOper()) && (!user->IsModeSet(hideopermode)))
+			privs.push_back('y');
+		return MOD_RES_PASSTHRU;
+	}
+
+	void OnPostJoin(Membership* memb) override
+	{
+		if ((!IS_LOCAL(memb->user)) || (!memb->user->IsOper()) || (memb->user->IsModeSet(hideopermode)))
+			return;
+
+		if (memb->HasMode(&opm))
+			return;
+
+		// The user was force joined and OnUserPreJoin() did not run. Set the operprefix now.
+		Modes::ChangeList changelist;
+		changelist.push_add(&opm, memb->user->nick);
+		ServerInstance->Modes.Process(ServerInstance->FakeClient, memb->chan, nullptr, changelist);
+	}
+
+	void SetOperPrefix(User* user, bool add)
+	{
+		Modes::ChangeList changelist;
+		changelist.push(&opm, add, user->nick);
+		for (const auto* memb : user->chans)
+			ServerInstance->Modes.Process(ServerInstance->FakeClient, memb->chan, nullptr, changelist);
+	}
+
+	void OnPostOperLogin(User* user, bool automatic) override
+	{
+		if (IS_LOCAL(user) && (!user->IsModeSet(hideopermode)))
+			SetOperPrefix(user, true);
+	}
+
+	void Prioritize() override
+	{
+		// m_opermodes may set +H on the oper to hide him, we don't want to set the oper prefix in that case
+		Module* opermodes = ServerInstance->Modules.Find("opermodes");
+		ServerInstance->Modules.SetPriority(this, I_OnPostOperLogin, PRIORITY_AFTER, opermodes);
+	}
+};
+
+HideOperWatcher::HideOperWatcher(ModuleOperPrefixMode* parent)
+	: ModeWatcher(parent, "hideoper", MODETYPE_USER)
+	, parentmod(parent)
+{
+}
+
+void HideOperWatcher::AfterMode(User* source, User* dest, Channel* channel, const Modes::Change& change)
+{
+	// If hideoper is being unset because the user is deopering, don't set +y
+	if (IS_LOCAL(dest) && dest->IsOper())
+		parentmod->SetOperPrefix(dest, !change.adding);
+}
+
+MODULE_INIT(ModuleOperPrefixMode)
-- 
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