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/nonicks.cpp | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 modules/nonicks.cpp

(limited to 'modules/nonicks.cpp')

diff --git a/modules/nonicks.cpp b/modules/nonicks.cpp
new file mode 100644
index 000000000..5ad7ca19f
--- /dev/null
+++ b/modules/nonicks.cpp
@@ -0,0 +1,71 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2017-2021, 2023 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2012 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2004 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 "modules/exemption.h"
+#include "modules/extban.h"
+
+class ModuleNoNickChange final
+	: public Module
+{
+private:
+	CheckExemption::EventProvider exemptionprov;
+	ExtBan::Acting extban;
+	SimpleChannelMode nn;
+
+public:
+	ModuleNoNickChange()
+		: Module(VF_VENDOR, "Adds channel mode N (nonick) which prevents users from changing their nickname whilst in the channel.")
+		, exemptionprov(this)
+		, extban(this, "nonick", 'N')
+		, nn(this, "nonick", 'N')
+	{
+	}
+
+	ModResult OnUserPreNick(LocalUser* user, const std::string& newnick) override
+	{
+		for (const auto* memb : user->chans)
+		{
+			ModResult res = exemptionprov.Check(user, memb->chan, "nonick");
+			if (res == MOD_RES_ALLOW)
+				continue;
+
+			if (user->HasPrivPermission("channels/ignore-nonicks"))
+				continue;
+
+			bool modeset = memb->chan->IsModeSet(nn);
+			if (!extban.GetStatus(user, memb->chan).check(!modeset))
+			{
+				user->WriteNumeric(ERR_CANTCHANGENICK, fmt::format("Can't change nickname while on {} ({})",
+					memb->chan->name, modeset ? "+N is set" : "you're extbanned"));
+				return MOD_RES_DENY;
+			}
+		}
+
+		return MOD_RES_PASSTHRU;
+	}
+};
+
+MODULE_INIT(ModuleNoNickChange)
-- 
cgit v1.3.1-10-gc9f91