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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
* Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
*
* 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 usermode +k to protect services from kicks, kills and mode changes. */
/** Handles user mode +k
*/
class ServProtectMode : public ModeHandler
{
public:
ServProtectMode(Module* Creator) : ModeHandler(Creator, "servprotect", 'k', PARAM_NONE, MODETYPE_USER) { oper = true; }
ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding)
{
/* Because this returns MODEACTION_DENY all the time, there is only ONE
* way to add this mode and that is at client introduction in the UID command,
* as this calls OnModeChange for each mode but disregards the return values.
* The mode cannot be manually added or removed, not even by a server or by a remote
* user or uline, which prevents its (ab)use as a kiddie 'god mode' on such networks.
* I'm sure if someone really wants to do that they can make a copy of this module
* that does the job. It won't be me though!
*/
return MODEACTION_DENY;
}
};
class ModuleServProtectMode : public Module
{
ServProtectMode bm;
public:
ModuleServProtectMode()
: bm(this)
{
}
void init()
{
ServerInstance->Modules->AddService(bm);
Implementation eventlist[] = { I_OnWhois, I_OnKill, I_OnWhoisLine, I_OnRawMode, I_OnUserPreKick };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
}
Version GetVersion()
{
return Version("Provides usermode +k to protect services from kicks, kills, and mode changes.", VF_VENDOR);
}
void OnWhois(User* src, User* dst)
{
if (dst->IsModeSet('k'))
{
ServerInstance->SendWhoisLine(src, dst, 310, src->nick+" "+dst->nick+" :is an "+ServerInstance->Config->Network+" Service");
}
}
ModResult OnRawMode(User* user, Channel* chan, const char mode, const std::string ¶m, bool adding, int pcnt)
{
/* Check that the mode is not a server mode, it is being removed, the user making the change is local, there is a parameter,
* and the user making the change is not a uline
*/
if (!adding && chan && IS_LOCAL(user) && !param.empty() && !ServerInstance->ULine(user->server))
{
/* Check if the parameter is a valid nick/uuid
*/
User *u = ServerInstance->FindNick(param);
if (u)
{
Membership* memb = chan->GetUser(u);
/* The target user has +k set on themselves, and you are trying to remove a privilege mode the user has set on themselves.
* This includes any prefix permission mode, even those registered in other modules, e.g. +qaohv. Using ::ModeString()
* here means that the number of modes is restricted to only modes the user has, limiting it to as short a loop as possible.
*/
if (u->IsModeSet('k') && memb && memb->modes.find(mode) != std::string::npos)
{
/* BZZZT, Denied! */
user->WriteNumeric(482, "%s %s :You are not permitted to remove privileges from %s services", user->nick.c_str(), chan->name.c_str(), ServerInstance->Config->Network.c_str());
return MOD_RES_DENY;
}
}
}
/* Mode allowed */
return MOD_RES_PASSTHRU;
}
ModResult OnKill(User* src, User* dst, const std::string &reason)
{
if (src == NULL)
return MOD_RES_PASSTHRU;
if (dst->IsModeSet('k'))
{
src->WriteNumeric(485, "%s :You are not permitted to kill %s services!", src->nick.c_str(), ServerInstance->Config->Network.c_str());
ServerInstance->SNO->WriteGlobalSno('a', src->nick+" tried to kill service "+dst->nick+" ("+reason+")");
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
ModResult OnUserPreKick(User *src, Membership* memb, const std::string &reason)
{
if (memb->user->IsModeSet('k'))
{
src->WriteNumeric(484, "%s %s :You are not permitted to kick services",
src->nick.c_str(), memb->chan->name.c_str());
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
ModResult OnWhoisLine(User* src, User* dst, int &numeric, std::string &text)
{
return ((src != dst) && (numeric == 319) && dst->IsModeSet('k')) ? MOD_RES_DENY : MOD_RES_PASSTHRU;
}
};
MODULE_INIT(ModuleServProtectMode)
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