/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2020 satmd * Copyright (C) 2017 B00mX0r * Copyright (C) 2017 Adam * Copyright (C) 2016 Sheogorath * Copyright (C) 2013, 2017, 2020 Sadie Powell * Copyright (C) 2013 Daniel Vassdal * Copyright (C) 2012-2015 Attila Molnar * Copyright (C) 2012 Shawn Smith * Copyright (C) 2012 Robby * Copyright (C) 2009-2010 Daniel De Graaf * Copyright (C) 2009 Uli Schlachter * Copyright (C) 2008 Robin Burchell * Copyright (C) 2007-2008 Dennis Friis * Copyright (C) 2004, 2006, 2008, 2010 Craig Edwards * * 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 . */ #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& 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(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)