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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2022 iwalkalone <iwalkalone69@gmail.com>
* Copyright (C) 2013, 2017-2020 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012-2015 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@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/ctctags.h"
#include "modules/exemption.h"
#include "numerichelper.h"
class DelayMsgMode final
: public ParamMode<DelayMsgMode, IntExtItem>
{
public:
IntExtItem jointime;
DelayMsgMode(Module* Parent)
: ParamMode<DelayMsgMode, IntExtItem>(Parent, "delaymsg", 'd')
, jointime(Parent, "delaymsg", ExtensionType::MEMBERSHIP)
{
ranktoset = ranktounset = OP_VALUE;
syntax = "<seconds>";
}
bool ResolveModeConflict(const std::string& their_param, const std::string& our_param, Channel*) override
{
return ConvToNum<intptr_t>(their_param) < ConvToNum<intptr_t>(our_param);
}
bool OnSet(User* source, Channel* chan, std::string& parameter) override;
void OnUnset(User* source, Channel* chan) override;
void SerializeParam(Channel* chan, intptr_t n, std::string& out)
{
out += ConvToStr(n);
}
};
class ModuleDelayMsg final
: public Module
, public CTCTags::EventListener
{
private:
DelayMsgMode djm;
CheckExemption::EventProvider exemptionprov;
ModResult HandleMessage(User* user, const MessageTarget& target);
public:
ModuleDelayMsg()
: Module(VF_VENDOR, "Adds channel mode d (delaymsg) which prevents newly joined users from speaking until the specified number of seconds have passed.")
, CTCTags::EventListener(this)
, djm(this)
, exemptionprov(this)
{
}
void OnUserJoin(Membership* memb, bool sync, bool created, CUList&) override;
ModResult OnUserPreMessage(User* user, MessageTarget& target, MessageDetails& details) override;
ModResult OnUserPreTagMessage(User* user, MessageTarget& target, CTCTags::TagMessageDetails& details) override;
};
bool DelayMsgMode::OnSet(User* source, Channel* chan, std::string& parameter)
{
// Setting a new limit, sanity check
intptr_t limit = ConvToNum<intptr_t>(parameter);
if (limit <= 0)
limit = 1;
ext.Set(chan, limit);
return true;
}
void DelayMsgMode::OnUnset(User* source, Channel* chan)
{
for (const auto& [_, memb] : chan->GetUsers())
jointime.Unset(memb);
}
void ModuleDelayMsg::OnUserJoin(Membership* memb, bool sync, bool created, CUList&)
{
if ((IS_LOCAL(memb->user)) && (memb->chan->IsModeSet(djm)))
{
djm.jointime.Set(memb, ServerInstance->Time());
}
}
ModResult ModuleDelayMsg::OnUserPreMessage(User* user, MessageTarget& target, MessageDetails& details)
{
return HandleMessage(user, target);
}
ModResult ModuleDelayMsg::OnUserPreTagMessage(User* user, MessageTarget& target, CTCTags::TagMessageDetails& details)
{
return HandleMessage(user, target);
}
ModResult ModuleDelayMsg::HandleMessage(User* user, const MessageTarget& target)
{
if (!IS_LOCAL(user) || target.type != MessageTarget::TYPE_CHANNEL)
return MOD_RES_PASSTHRU;
Channel* channel = target.Get<Channel>();
Membership* memb = channel->GetUser(user);
if (!memb)
return MOD_RES_PASSTHRU;
time_t ts = djm.jointime.Get(memb);
if (ts == 0)
return MOD_RES_PASSTHRU;
intptr_t len = djm.ext.Get(channel);
if ((ts + len) > ServerInstance->Time())
{
ModResult res = exemptionprov.Check(user, channel, "delaymsg");
if (res == MOD_RES_ALLOW)
return MOD_RES_PASSTHRU;
if (user->HasPrivPermission("channels/ignore-delaymsg"))
return MOD_RES_PASSTHRU;
const std::string message = INSP_FORMAT("You cannot send messages to this channel until you have been a member for {} seconds.", len);
user->WriteNumeric(Numerics::CannotSendTo(channel, message));
return MOD_RES_DENY;
}
else
{
/* Timer has expired, we can stop checking now */
djm.jointime.Unset(memb);
}
return MOD_RES_PASSTHRU;
}
MODULE_INIT(ModuleDelayMsg)
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