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/*
 * InspIRCd -- Internet Relay Chat Daemon
 *
 *   Copyright (C) 2018 Matt Schatz <genius3000@g3k.solutions>
 *   Copyright (C) 2013, 2018-2019 Sadie Powell <sadie@witchery.services>
 *   Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
 *   Copyright (C) 2012 Attila Molnar <attilamolnar@hush.com>
 *   Copyright (C) 2010 Craig Edwards <brain@inspircd.org>
 *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
 *   Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
 *   Copyright (C) 2007 John Brooks <special@inspircd.org>
 *   Copyright (C) 2007 Dennis Friis <peavey@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/ircv3.h"
#include "modules/ircv3_replies.h"

class CommandSetName : public SplitCommand
{
private:
	IRCv3::Replies::Fail fail;

 public:
	Cap::Capability cap;
	bool notifyopers;

	CommandSetName(Module* Creator)
		: SplitCommand(Creator, "SETNAME", 1, 1)
		, fail(Creator)
		, cap(Creator, "setname")
	{
		allow_empty_last_param = false;
		syntax = ":<realname>";
	}

	CmdResult HandleLocal(LocalUser* user, const Params& parameters) CXX11_OVERRIDE
	{
		if (parameters[0].size() > ServerInstance->Config->Limits.MaxReal)
		{
			fail.SendIfCap(user, cap, this, "INVALID_REALNAME", "Real name is too long");
			return CMD_FAILURE;
		}

		if (!user->ChangeRealName(parameters[0]))
		{
			fail.SendIfCap(user, cap, this, "CANNOT_CHANGE_REALNAME", "Unable to change your real name");
			return CMD_FAILURE;
		}

		if (notifyopers)
			ServerInstance->SNO->WriteGlobalSno('a', "%s used SETNAME to change their real name to '%s'",
				user->nick.c_str(), parameters[0].c_str());
		return CMD_SUCCESS;
	}
};

class ModuleSetName : public Module
{
 private:
	CommandSetName cmd;
	ClientProtocol::EventProvider setnameevprov;

 public:
	ModuleSetName()
		: cmd(this)
		, setnameevprov(this, "SETNAME")
	{
	}

	void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
	{
		ConfigTag* tag = ServerInstance->Config->ConfValue("setname");

		// Whether the module should only be usable by server operators.
		bool operonly = tag->getBool("operonly");
		cmd.flags_needed = operonly ? 'o' : 0;

		// Whether a snotice should be sent out when a user changes their real name.
		cmd.notifyopers = tag->getBool("notifyopers", !operonly);
	}

	void OnChangeRealName(User* user, const std::string& real) CXX11_OVERRIDE
	{
		if (!(user->registered & REG_NICKUSER))
			return;

		ClientProtocol::Message msg("SETNAME", user);
		msg.PushParamRef(real);
		ClientProtocol::Event protoev(setnameevprov, msg);
		IRCv3::WriteNeighborsWithCap(user, protoev, cmd.cap, true);
	}

	Version GetVersion() CXX11_OVERRIDE
	{
		return Version("Provides the SETNAME command", VF_VENDOR);
	}
};

MODULE_INIT(ModuleSetName)