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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2009 Uli Schlachter <psychon@znc.in>
* Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
* Copyright (C) 2008 Geoff Bricker <geoff.bricker@gmail.com>
* Copyright (C) 2004-2006 Craig Edwards <craigedwards@brainbox.cc>
* Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
*
* 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"
/* $ModDesc: Provides support for allowing opers to override certain things. */
class ModuleOverride : public Module
{
bool RequireKey;
bool NoisyOverride;
static bool IsOverride(unsigned int userlevel, const std::string& modeline)
{
for (std::string::const_iterator i = modeline.begin(); i != modeline.end(); ++i)
{
ModeHandler* mh = ServerInstance->Modes->FindMode(*i, MODETYPE_CHANNEL);
if (!mh)
continue;
if (mh->GetLevelRequired() > userlevel)
return true;
}
return false;
}
public:
void init()
{
// read our config options (main config file)
OnRehash(NULL);
ServerInstance->SNO->EnableSnomask('v', "OVERRIDE");
Implementation eventlist[] = { I_OnRehash, I_OnPreMode, I_On005Numeric, I_OnUserPreJoin, I_OnUserPreKick, I_OnPreTopicChange };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
}
void OnRehash(User* user)
{
// re-read our config options on a rehash
ConfigTag* tag = ServerInstance->Config->ConfValue("override");
NoisyOverride = tag->getBool("noisy");
RequireKey = tag->getBool("requirekey");
}
void On005Numeric(std::string &output)
{
output.append(" OVERRIDE");
}
bool CanOverride(User* source, const char* token)
{
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)
{
if (IS_LOCAL(source) && IS_OPER(source) && CanOverride(source, "TOPIC"))
{
if (!channel->HasUser(source) || (channel->IsModeSet('t') && 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)
{
if (IS_OPER(source) && 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))
{
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, const std::vector<std::string>& parameters)
{
if (!source || !channel)
return MOD_RES_PASSTHRU;
if (!IS_OPER(source) || !IS_LOCAL(source))
return MOD_RES_PASSTHRU;
unsigned int mode = channel->GetPrefixValue(source);
if (!IsOverride(mode, parameters[1]))
return MOD_RES_PASSTHRU;
if (CanOverride(source, "MODE"))
{
std::string msg = source->nick+" overriding modes:";
for(unsigned int i=0; i < parameters.size(); i++)
msg += " " + parameters[i];
ServerInstance->SNO->WriteGlobalSno('v',msg);
return MOD_RES_ALLOW;
}
return MOD_RES_PASSTHRU;
}
ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
{
if (IS_LOCAL(user) && IS_OPER(user))
{
if (chan)
{
if (chan->IsModeSet('i') && (CanOverride(user,"INVITE")))
{
irc::string x(chan->name.c_str());
if (!IS_LOCAL(user)->IsInvited(x))
{
if (RequireKey && keygiven != "override")
{
// Can't join normally -- must use a special key to bypass restrictions
user->WriteServ("NOTICE %s :*** You may not join normally. You must join with a key of 'override' to oper override.", user->nick.c_str());
return MOD_RES_PASSTHRU;
}
if (NoisyOverride)
chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass invite-only", cname, user->nick.c_str());
ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass +i on "+std::string(cname));
}
return MOD_RES_ALLOW;
}
if (chan->IsModeSet('k') && (CanOverride(user,"KEY")) && keygiven != chan->GetModeParameter('k'))
{
if (RequireKey && keygiven != "override")
{
// Can't join normally -- must use a special key to bypass restrictions
user->WriteServ("NOTICE %s :*** You may not join normally. You must join with a key of 'override' to oper override.", user->nick.c_str());
return MOD_RES_PASSTHRU;
}
if (NoisyOverride)
chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass the channel key", cname, user->nick.c_str());
ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass +k on "+std::string(cname));
return MOD_RES_ALLOW;
}
if (chan->IsModeSet('l') && (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter('l'))) && (CanOverride(user,"LIMIT")))
{
if (RequireKey && keygiven != "override")
{
// Can't join normally -- must use a special key to bypass restrictions
user->WriteServ("NOTICE %s :*** You may not join normally. You must join with a key of 'override' to oper override.", user->nick.c_str());
return MOD_RES_PASSTHRU;
}
if (NoisyOverride)
chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass the channel limit", cname, user->nick.c_str());
ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass +l on "+std::string(cname));
return MOD_RES_ALLOW;
}
if (chan->IsBanned(user) && CanOverride(user,"BANWALK"))
{
if (RequireKey && keygiven != "override")
{
// Can't join normally -- must use a special key to bypass restrictions
user->WriteServ("NOTICE %s :*** You may not join normally. You must join with a key of 'override' to oper override.", user->nick.c_str());
return MOD_RES_PASSTHRU;
}
if (NoisyOverride)
chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass channel ban", cname, user->nick.c_str());
ServerInstance->SNO->WriteGlobalSno('v',"%s used oper override to bypass channel ban on %s", user->nick.c_str(), cname);
return MOD_RES_ALLOW;
}
}
}
return MOD_RES_PASSTHRU;
}
Version GetVersion()
{
return Version("Provides support for allowing opers to override certain things",VF_VENDOR);
}
};
MODULE_INIT(ModuleOverride)
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