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/samode.cpp | 142 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 modules/samode.cpp

(limited to 'modules/samode.cpp')

diff --git a/modules/samode.cpp b/modules/samode.cpp
new file mode 100644
index 000000000..5ebe8319c
--- /dev/null
+++ b/modules/samode.cpp
@@ -0,0 +1,142 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2018-2023 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2013-2014, 2016, 2018 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2006 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 "clientprotocolmsg.h"
+#include "numerichelper.h"
+#include "utility/string.h"
+
+class CommandSamode final
+	: public Command
+{
+	bool logged;
+
+public:
+	bool active;
+	CommandSamode(Module* Creator)
+		: Command(Creator, "SAMODE", 2)
+	{
+		access_needed = CmdAccess::OPERATOR;
+		syntax = { "<target> (+|-)<modes> [<mode-parameters>]" };
+		active = false;
+	}
+
+	CmdResult Handle(User* user, const Params& parameters) override
+	{
+		if (!ServerInstance->Channels.IsPrefix(parameters[0][0]))
+		{
+			auto* target = ServerInstance->Users.FindNick(parameters[0], true);
+			if (!target)
+			{
+				user->WriteNumeric(Numerics::NoSuchNick(parameters[0]));
+				return CmdResult::FAILURE;
+			}
+
+			// Changing the modes of another user requires a special permission
+			if ((target != user) && (!user->HasPrivPermission("users/samode-usermodes")))
+			{
+				user->WriteNotice("*** You are not allowed to /SAMODE other users (the privilege users/samode-usermodes is needed to /SAMODE others).");
+				return CmdResult::FAILURE;
+			}
+		}
+
+		// XXX: Make ModeParser clear LastParse
+		Modes::ChangeList emptychangelist;
+		ServerInstance->Modes.ProcessSingle(ServerInstance->FakeClient, nullptr, ServerInstance->FakeClient, emptychangelist);
+
+		logged = false;
+		this->active = true;
+		ServerInstance->Parser.CallHandler("MODE", parameters, user);
+		this->active = false;
+
+		if (!logged)
+		{
+			// If we haven't logged anything yet then the client queried the list of a listmode
+			// (e.g. /SAMODE #chan b), which was handled internally by the MODE command handler.
+			//
+			// Viewing the modes of a user or a channel could also result in this, but
+			// that is not possible with /SAMODE because we require at least 2 parameters.
+			LogUsage(user, insp::join(parameters));
+		}
+
+		return CmdResult::SUCCESS;
+	}
+
+	void LogUsage(const User* user, const std::string& text)
+	{
+		logged = true;
+		ServerInstance->SNO.WriteGlobalSno('a', user->nick + " used SAMODE: " + text);
+	}
+};
+
+class ModuleSaMode final
+	: public Module
+{
+private:
+	CommandSamode cmd;
+
+public:
+	ModuleSaMode()
+		: Module(VF_VENDOR, "Adds the /SAMODE command which allows server operators to change the modes of a target (channel, user) that they would not otherwise have the privileges to change.")
+		, cmd(this)
+	{
+	}
+
+	ModResult OnPreMode(User* source, User* dest, Channel* channel, Modes::ChangeList& modes) override
+	{
+		if (cmd.active)
+			return MOD_RES_ALLOW;
+		return MOD_RES_PASSTHRU;
+	}
+
+	void OnMode(User* user, User* destuser, Channel* destchan, const Modes::ChangeList& modes, ModeParser::ModeProcessFlag processflags) override
+	{
+		if (!cmd.active)
+			return;
+
+		std::string logtext = (destuser ? destuser->nick : destchan->name);
+		logtext.push_back(' ');
+		logtext += ClientProtocol::Messages::Mode::ToModeLetters(modes);
+
+		for (const auto& item : modes.getlist())
+		{
+			if (!item.param.empty())
+				logtext.append(1, ' ').append(item.param);
+		}
+
+		cmd.LogUsage(user, logtext);
+	}
+
+	void Prioritize() override
+	{
+		Module* disable = ServerInstance->Modules.Find("disable");
+		ServerInstance->Modules.SetPriority(this, I_OnRawMode, PRIORITY_BEFORE, disable);
+
+		Module* override = ServerInstance->Modules.Find("override");
+		ServerInstance->Modules.SetPriority(this, I_OnPreMode, PRIORITY_BEFORE, override);
+	}
+};
+
+MODULE_INIT(ModuleSaMode)
-- 
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