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/*
 * Anope IRC Services
 *
 * Copyright (C) 2003-2016 Anope Team <team@anope.org>
 *
 * This file is part of Anope. Anope 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 see <http://www.gnu.org/licenses/>.
 */

#include "module.h"

class CommandOSNOOP : public Command
{
 public:
	CommandOSNOOP(Module *creator) : Command(creator, "operserv/noop", 2, 2)
	{
		this->SetDesc(_("Remove all operators from a server remotely"));
		this->SetSyntax(_("SET \037server\037"));
		this->SetSyntax(_("REVOKE \037server\037"));
	}

	void Execute(CommandSource &source, const std::vector<Anope::string> &params) override
	{
		const Anope::string &cmd = params[0];
		const Anope::string &server = params[1];

		Server *s = Server::Find(server, true);
		if (s == NULL)
		{
			source.Reply(_("Server \002{0}\002 does not exist."), server);
			return;
		}

		if (s == Me || s->IsJuped() || s->IsULined())
		{
			source.Reply(_("You can not NOOP Services."));
			return;
		}

		if (cmd.equals_ci("SET"))
		{
			/* Remove the O:lines */
			IRCD->Send<messages::NOOP>(s, true);
			s->Extend<Anope::string>("noop", source.GetNick());

			logger.Admin(source, _("{source} used {command} on {0}"), s->GetName());

			source.Reply(_("All operators from \002{0}\002 have been removed."), s->GetName());

			Anope::string reason = "NOOP command used by " + source.GetNick();
			/* Kill all the IRCops of the server */
			for (user_map::const_iterator it = UserListByNick.begin(); it != UserListByNick.end(); ++it)
			{
				User *u2 = it->second;

				if (u2->server == s && u2->HasMode("OPER"))
					u2->Kill(*source.service, reason);
			}
		}
		else if (cmd.equals_ci("REVOKE"))
		{
			s->Shrink<Anope::string>("noop");
			IRCD->Send<messages::NOOP>(s, false);

			logger.Admin(source, _("{source} used {command} REVOKE on {0}"), s->GetName());

			source.Reply(_("All O:lines of \002{0}\002 have been reset."), s->GetName());
		}
		else
		{
			this->OnSyntaxError(source, "");
		}
	}

	bool OnHelp(CommandSource &source, const Anope::string &subcommand) override
	{
		source.Reply(_("\002{0} SET\002 kills all operators from the given \002server\002 and prevents operators from opering up on the given server."
		               " \002{0} REVOKE\002 removes this restriction."));
		return true;
	}
};

class OSNOOP : public Module
	, public EventHook<Event::UserModeSet>
{
	CommandOSNOOP commandosnoop;
	ExtensibleItem<Anope::string> noop;

 public:
	OSNOOP(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, VENDOR)
		, EventHook<Event::UserModeSet>(this)
		, commandosnoop(this)
		, noop(this, "noop")
	{

	}

	void OnUserModeSet(const MessageSource &, User *u, const Anope::string &mname) override
	{
		Anope::string *setter;
		if (mname == "OPER" && (setter = noop.Get(u->server)))
		{
			Anope::string reason = "NOOP command used by " + *setter;
			ServiceBot *OperServ = Config->GetClient("OperServ");
			u->Kill(OperServ, reason);
		}
	}
};

MODULE_INIT(OSNOOP)