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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2020 satmd <satmd@users.noreply.github.com>
* Copyright (C) 2017 B00mX0r <b00mx0r@aureus.pw>
* Copyright (C) 2017 Adam <Adam@anope.org>
* Copyright (C) 2016 Sheogorath <sheogorath@shivering-isles.com>
* Copyright (C) 2013, 2017, 2020 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
* Copyright (C) 2012-2015 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012 Shawn Smith <ShawnSmith0828@gmail.com>
* Copyright (C) 2012 Robby <robby@chatbelgie.be>
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2006, 2008, 2010 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/invite.h"
class Override : public SimpleUserModeHandler
{
public:
Override(Module* Creator) : SimpleUserModeHandler(Creator, "override", 'O')
{
oper = true;
if (!ServerInstance->Config->ConfValue("override")->getBool("enableumode"))
DisableAutoRegister();
}
};
class ModuleOverride : public Module
{
bool RequireKey;
bool NoisyOverride;
bool UmodeEnabled;
Override ou;
ChanModeReference topiclock;
ChanModeReference inviteonly;
ChanModeReference key;
ChanModeReference limit;
Invite::API invapi;
static bool IsOverride(unsigned int userlevel, const Modes::ChangeList::List& list)
{
for (Modes::ChangeList::List::const_iterator i = list.begin(); i != list.end(); ++i)
{
ModeHandler* mh = i->mh;
if (mh->GetLevelRequired(i->adding) > userlevel)
return true;
}
return false;
}
ModResult HandleJoinOverride(LocalUser* user, Channel* chan, const std::string& keygiven, const char* bypasswhat, const char* mode)
{
if (RequireKey && keygiven != "override")
{
// Can't join normally -- must use a special key to bypass restrictions
user->WriteNotice("*** You may not join normally. You must join with a key of 'override' to oper override.");
return MOD_RES_PASSTHRU;
}
if (NoisyOverride)
chan->WriteRemoteNotice(InspIRCd::Format("%s used oper override to bypass %s", user->nick.c_str(), bypasswhat));
ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass " + mode + " on " + chan->name);
return MOD_RES_ALLOW;
}
public:
ModuleOverride()
: UmodeEnabled(false)
, ou(this)
, topiclock(this, "topiclock")
, inviteonly(this, "inviteonly")
, key(this, "key")
, limit(this, "limit")
, invapi(this)
{
}
void init() CXX11_OVERRIDE
{
ServerInstance->SNO->EnableSnomask('v', "OVERRIDE");
UmodeEnabled = ServerInstance->Config->ConfValue("override")->getBool("enableumode");
}
void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
// re-read our config options
ConfigTag* tag = ServerInstance->Config->ConfValue("override");
NoisyOverride = tag->getBool("noisy");
RequireKey = tag->getBool("requirekey");
}
void On005Numeric(std::map<std::string, std::string>& tokens) CXX11_OVERRIDE
{
tokens["OVERRIDE"];
}
bool CanOverride(User* source, const char* token)
{
// If we require oper override umode (+O) but it is not set
if (UmodeEnabled && !source->IsModeSet(ou))
return false;
std::string tokenlist = source->oper->getConfig("override");
// its defined or * is set, return its value as a boolean for if the token is set
return ((tokenlist.find(token, 0) != std::string::npos) || (tokenlist.find("*", 0) != std::string::npos));
}
ModResult OnPreTopicChange(User *source, Channel *channel, const std::string &topic) CXX11_OVERRIDE
{
if (IS_LOCAL(source) && source->IsOper() && CanOverride(source, "TOPIC"))
{
if (!channel->HasUser(source) || (channel->IsModeSet(topiclock) && channel->GetPrefixValue(source) < HALFOP_VALUE))
{
ServerInstance->SNO->WriteGlobalSno('v',source->nick+" used oper override to change a topic on "+channel->name);
}
// Explicit allow
return MOD_RES_ALLOW;
}
return MOD_RES_PASSTHRU;
}
ModResult OnUserPreKick(User* source, Membership* memb, const std::string &reason) CXX11_OVERRIDE
{
if (source->IsOper() && CanOverride(source,"KICK"))
{
// If the kicker's status is less than the target's, or the kicker's status is less than or equal to voice
if ((memb->chan->GetPrefixValue(source) < memb->getRank()) || (memb->chan->GetPrefixValue(source) <= VOICE_VALUE) ||
(memb->chan->GetPrefixValue(source) == HALFOP_VALUE && memb->getRank() == HALFOP_VALUE))
{
ServerInstance->SNO->WriteGlobalSno('v',source->nick+" used oper override to kick "+memb->user->nick+" on "+memb->chan->name+" ("+reason+")");
return MOD_RES_ALLOW;
}
}
return MOD_RES_PASSTHRU;
}
ModResult OnPreMode(User* source, User* dest, Channel* channel, Modes::ChangeList& modes) CXX11_OVERRIDE
{
if (!channel)
return MOD_RES_PASSTHRU;
if (!source->IsOper() || !IS_LOCAL(source))
return MOD_RES_PASSTHRU;
const Modes::ChangeList::List& list = modes.getlist();
unsigned int mode = channel->GetPrefixValue(source);
if (!IsOverride(mode, list))
return MOD_RES_PASSTHRU;
if (CanOverride(source, "MODE"))
{
std::string msg = source->nick + " used oper override to set modes on " + channel->name + ": ";
// Construct a MODE string in the old format for sending it as a snotice
std::string params;
char pm = 0;
for (Modes::ChangeList::List::const_iterator i = list.begin(); i != list.end(); ++i)
{
const Modes::Change& item = *i;
if (!item.param.empty())
params.append(1, ' ').append(item.param);
char wanted_pm = (item.adding ? '+' : '-');
if (wanted_pm != pm)
{
pm = wanted_pm;
msg += pm;
}
msg += item.mh->GetModeChar();
}
msg += params;
ServerInstance->SNO->WriteGlobalSno('v',msg);
return MOD_RES_ALLOW;
}
return MOD_RES_PASSTHRU;
}
ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
{
if (user->IsOper())
{
if (chan)
{
if (chan->IsModeSet(inviteonly) && (CanOverride(user,"INVITE")))
{
if (!invapi->IsInvited(user, chan))
return HandleJoinOverride(user, chan, keygiven, "invite-only", "+i");
return MOD_RES_ALLOW;
}
if (chan->IsModeSet(key) && (CanOverride(user,"KEY")) && keygiven != chan->GetModeParameter(key))
return HandleJoinOverride(user, chan, keygiven, "the channel key", "+k");
if (chan->IsModeSet(limit) && (chan->GetUserCounter() >= ConvToNum<size_t>(chan->GetModeParameter(limit))) && (CanOverride(user,"LIMIT")))
return HandleJoinOverride(user, chan, keygiven, "the channel limit", "+l");
if (chan->IsBanned(user) && CanOverride(user,"BANWALK"))
return HandleJoinOverride(user, chan, keygiven, "channel ban", "channel ban");
}
}
return MOD_RES_PASSTHRU;
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Allows server operators to be given privileges that allow them to ignore various channel-level restrictions.",VF_VENDOR);
}
};
MODULE_INIT(ModuleOverride)
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