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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2017-2023, 2026 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) 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 "listmode.h"
#include "modules/extban.h"
#include "modules/isupport.h"
enum
{
// From RFC 2812.
RPL_INVEXLIST = 346,
RPL_ENDOFINVEXLIST = 347
};
class InviteException final
: public ListModeBase
{
private:
ExtBan::ManagerRef extbanmgr;
public:
InviteException(Module* Creator)
: ListModeBase(Creator, "invex", 'I', RPL_INVEXLIST, RPL_ENDOFINVEXLIST)
, extbanmgr(Creator)
{
syntax = "<mask>";
}
bool CompareEntry(const std::string& entry, const std::string& value) const override
{
if (extbanmgr)
{
auto res = extbanmgr->CompareEntry(this, entry, value);
if (res != ExtBan::Comparison::NOT_AN_EXTBAN)
return res == ExtBan::Comparison::MATCH;
}
return irc::equals(entry, value);
}
bool ValidateParam(LocalUser* user, Channel* channel, std::string& parameter) override
{
if (extbanmgr)
{
const auto valid = extbanmgr->Validate(this, user, channel, parameter);
if (valid != ExtBan::Comparison::NOT_AN_EXTBAN)
return valid == ExtBan::Comparison::MATCH;
}
ModeParser::CleanMask(parameter);
return true;
}
};
class ModuleInviteException final
: public Module
, public ISupport::EventListener
{
private:
bool invite_bypass_key;
InviteException ie;
public:
ModuleInviteException()
: Module(VF_VENDOR, "Adds channel mode I (invex) which allows channel operators to exempt user masks from channel mode i (inviteonly).")
, ISupport::EventListener(this)
, ie(this)
{
}
void OnBuildISupport(ISupport::TokenMap& tokens) override
{
tokens["INVEX"] = ConvToStr(ie.GetModeChar());
}
ModResult OnCheckInvite(User* user, Channel* chan) override
{
ListModeBase::ModeList* list = ie.GetList(chan);
if (list)
{
for (const auto& entry : *list)
{
if (chan->CheckBan(user, entry.mask))
{
return MOD_RES_ALLOW;
}
}
}
return MOD_RES_PASSTHRU;
}
ModResult OnCheckKey(User* user, Channel* chan, const std::string& key) override
{
if (invite_bypass_key)
return OnCheckInvite(user, chan);
return MOD_RES_PASSTHRU;
}
void ReadConfig(ConfigStatus& status) override
{
ie.DoRehash();
invite_bypass_key = ServerInstance->Config->ConfValue("inviteexception")->getBool("bypasskey", true);
}
};
MODULE_INIT(ModuleInviteException)
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