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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
* Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
* Copyright (C) 2013, 2017-2018, 2020 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2012 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
* Copyright (C) 2009 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) 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 "modules/exemption.h"
class NoCTCPUser : public SimpleUserModeHandler
{
public:
NoCTCPUser(Module* Creator)
: SimpleUserModeHandler(Creator, "u_noctcp", 'T')
{
if (!ServerInstance->Config->ConfValue("noctcp")->getBool("enableumode"))
DisableAutoRegister();
}
};
class ModuleNoCTCP : public Module
{
CheckExemption::EventProvider exemptionprov;
SimpleChannelModeHandler nc;
NoCTCPUser ncu;
public:
ModuleNoCTCP()
: exemptionprov(this)
, nc(this, "noctcp", 'C')
, ncu(this)
{
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Adds channel mode C (noctcp) which allows channels to block messages which contain CTCPs.", VF_VENDOR);
}
ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE
{
if (!IS_LOCAL(user))
return MOD_RES_PASSTHRU;
std::string ctcpname;
if (!details.IsCTCP(ctcpname) || irc::equals(ctcpname, "ACTION"))
return MOD_RES_PASSTHRU;
switch (target.type)
{
case MessageTarget::TYPE_CHANNEL:
{
if (user->HasPrivPermission("channels/ignore-noctcp"))
return MOD_RES_PASSTHRU;
Channel* c = target.Get<Channel>();
const Channel::MemberMap& members = c->GetUsers();
for (Channel::MemberMap::const_iterator member = members.begin(); member != members.end(); ++member)
{
User* u = member->first;
if (u->IsModeSet(ncu))
details.exemptions.insert(u);
}
ModResult res = CheckExemption::Call(exemptionprov, user, c, "noctcp");
if (res == MOD_RES_ALLOW)
return MOD_RES_PASSTHRU;
if (c->IsModeSet(nc))
{
user->WriteNumeric(Numerics::CannotSendTo(c, "CTCPs", &nc));
return MOD_RES_DENY;
}
if (c->GetExtBanStatus(user, 'C') == MOD_RES_DENY)
{
user->WriteNumeric(Numerics::CannotSendTo(c, "CTCPs", 'C', "noctcp"));
return MOD_RES_DENY;
}
break;
}
case MessageTarget::TYPE_USER:
{
if (user->HasPrivPermission("users/ignore-noctcp"))
return MOD_RES_PASSTHRU;
User* u = target.Get<User>();
if (u->IsModeSet(ncu))
{
user->WriteNumeric(Numerics::CannotSendTo(u, "CTCPs", &ncu));
return MOD_RES_DENY;
}
break;
}
case MessageTarget::TYPE_SERVER:
break;
}
return MOD_RES_PASSTHRU;
}
void On005Numeric(std::map<std::string, std::string>& tokens) CXX11_OVERRIDE
{
tokens["EXTBAN"].push_back('C');
}
};
MODULE_INIT(ModuleNoCTCP)
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