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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2013, 2017-2021 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012-2013 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012 Robby <robby@chatbelgie.be>
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2006-2007 Craig Edwards <brain@inspircd.org>
* Copyright (C) 2006 Oliver Lupton <om@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 "listmode.h"
#include "modules/extban.h"
#include "modules/isupport.h"
enum
{
// From RFC 2812.
RPL_EXCEPTLIST = 348,
RPL_ENDOFEXCEPTLIST = 349
};
class BanException final
: public ListModeBase
{
private:
ExtBan::ManagerRef extbanmgr;
public:
BanException(Module* Creator)
: ListModeBase(Creator, "banexception", 'e', RPL_EXCEPTLIST, RPL_ENDOFEXCEPTLIST)
, extbanmgr(Creator)
{
syntax = "<mask>";
}
bool ValidateParam(LocalUser* user, Channel* channel, std::string& parameter) override
{
if (!extbanmgr || !extbanmgr->Canonicalize(parameter))
ModeParser::CleanMask(parameter);
return true;
}
};
class ModuleBanException final
: public Module
, public ExtBan::EventListener
, public ISupport::EventListener
{
private:
BanException be;
public:
ModuleBanException()
: Module(VF_VENDOR, "Adds channel mode e (banexception) which allows channel operators to exempt user masks from channel mode b (ban).")
, ExtBan::EventListener(this)
, ISupport::EventListener(this)
, be(this)
{
}
void OnBuildISupport(ISupport::TokenMap& tokens) override
{
tokens["EXCEPTS"] = ConvToStr(be.GetModeChar());
}
ModResult OnExtBanCheck(User* user, Channel* chan, ExtBan::Base* extban) override
{
ListModeBase::ModeList* list = be.GetList(chan);
if (!list)
return MOD_RES_PASSTHRU;
for (const auto& ban : *list)
{
bool inverted;
std::string name;
std::string value;
if (!ExtBan::Parse(ban.mask, name, value, inverted))
continue;
if (name.size() == 1)
{
// It is an extban but not this extban.
if (name[0] != extban->GetLetter())
continue;
}
else
{
// It is an extban but not this extban.
if (!irc::equals(name, extban->GetName()))
continue;
}
return extban->IsMatch(user, chan, value) != inverted ? MOD_RES_ALLOW : MOD_RES_PASSTHRU;
}
return MOD_RES_PASSTHRU;
}
ModResult OnCheckChannelBan(User* user, Channel* chan) override
{
ListModeBase::ModeList* list = be.GetList(chan);
if (!list)
{
// No list, proceed normally
return MOD_RES_PASSTHRU;
}
for (const auto& entry : *list)
{
if (chan->CheckBan(user, entry.mask))
{
// They match an entry on the list, so let them in.
return MOD_RES_ALLOW;
}
}
return MOD_RES_PASSTHRU;
}
void ReadConfig(ConfigStatus& status) override
{
be.DoRehash();
}
};
MODULE_INIT(ModuleBanException)
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