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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2020 Michael <michaelhazell@hotmail.com>
* Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
* Copyright (C) 2018 linuxdaemon <linuxdaemon.irc@gmail.com>
* Copyright (C) 2013, 2017-2018, 2020 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012-2013, 2016 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2009 John Brooks <special@inspircd.org>
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2006, 2010 Craig Edwards <brain@inspircd.org>
* Copyright (C) 2005, 2008 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"
#include "xline.h"
#include "modules/stats.h"
enum
{
// InspIRCd-specific.
ERR_BADCHANNEL = 926
};
// Compatibility: Use glob matching?
// InspIRCd versions 3.7.0 and below use only exact matching
static bool glob = false;
/** Holds a CBAN item
*/
class CBan : public XLine
{
private:
std::string matchtext;
public:
CBan(time_t s_time, unsigned long d, const std::string& src, const std::string& re, const std::string& ch)
: XLine(s_time, d, src, re, "CBAN")
, matchtext(ch)
{
}
// XXX I shouldn't have to define this
bool Matches(User* u) CXX11_OVERRIDE
{
return false;
}
bool Matches(const std::string& s) CXX11_OVERRIDE
{
if (glob)
return InspIRCd::Match(s, matchtext);
else
return irc::equals(matchtext, s);
}
const std::string& Displayable() CXX11_OVERRIDE
{
return matchtext;
}
};
/** An XLineFactory specialized to generate cban pointers
*/
class CBanFactory : public XLineFactory
{
public:
CBanFactory() : XLineFactory("CBAN") { }
/** Generate a CBAN
*/
XLine* Generate(time_t set_time, unsigned long duration, const std::string& source, const std::string& reason, const std::string& xline_specific_mask) CXX11_OVERRIDE
{
return new CBan(set_time, duration, source, reason, xline_specific_mask);
}
bool AutoApplyToUserList(XLine* x) CXX11_OVERRIDE
{
return false; // No, we apply to channels.
}
};
/** Handle /CBAN
*/
class CommandCBan : public Command
{
public:
CommandCBan(Module* Creator) : Command(Creator, "CBAN", 1, 3)
{
flags_needed = 'o';
this->syntax = "<channelmask> [<duration> [:<reason>]]";
}
CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE
{
/* syntax: CBAN #channel time :reason goes here */
/* 'time' is a human-readable timestring, like 2d3h2s. */
if (parameters.size() == 1)
{
std::string reason;
if (ServerInstance->XLines->DelLine(parameters[0].c_str(), "CBAN", reason, user))
{
ServerInstance->SNO->WriteGlobalSno('x', "%s removed CBan on %s: %s", user->nick.c_str(), parameters[0].c_str(), reason.c_str());
}
else
{
user->WriteNotice("*** CBan " + parameters[0] + " not found on the list.");
return CMD_FAILURE;
}
}
else
{
// Adding - XXX todo make this respect <insane> tag perhaps..
unsigned long duration;
if (!InspIRCd::Duration(parameters[1], duration))
{
user->WriteNotice("*** Invalid duration for CBan.");
return CMD_FAILURE;
}
const char *reason = (parameters.size() > 2) ? parameters[2].c_str() : "No reason supplied";
CBan* r = new CBan(ServerInstance->Time(), duration, user->nick.c_str(), reason, parameters[0].c_str());
if (ServerInstance->XLines->AddLine(r, user))
{
if (!duration)
{
ServerInstance->SNO->WriteGlobalSno('x', "%s added permanent CBan for %s: %s", user->nick.c_str(), parameters[0].c_str(), reason);
}
else
{
ServerInstance->SNO->WriteGlobalSno('x', "%s added timed CBan for %s, expires in %s (on %s): %s",
user->nick.c_str(), parameters[0].c_str(), InspIRCd::DurationString(duration).c_str(),
InspIRCd::TimeString(ServerInstance->Time() + duration).c_str(), reason);
}
}
else
{
delete r;
user->WriteNotice("*** CBan for " + parameters[0] + " already exists");
return CMD_FAILURE;
}
}
return CMD_SUCCESS;
}
RouteDescriptor GetRouting(User* user, const Params& parameters) CXX11_OVERRIDE
{
if (IS_LOCAL(user))
return ROUTE_LOCALONLY; // spanningtree will send ADDLINE
return ROUTE_BROADCAST;
}
};
class ModuleCBan : public Module, public Stats::EventListener
{
CommandCBan mycommand;
CBanFactory f;
public:
ModuleCBan()
: Stats::EventListener(this)
, mycommand(this)
{
}
void init() CXX11_OVERRIDE
{
ServerInstance->XLines->RegisterFactory(&f);
}
~ModuleCBan()
{
ServerInstance->XLines->DelAll("CBAN");
ServerInstance->XLines->UnregisterFactory(&f);
}
void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
ConfigTag* tag = ServerInstance->Config->ConfValue("cban");
// XXX: Consider changing default behavior on the next major version
glob = tag->getBool("glob", false);
}
ModResult OnStats(Stats::Context& stats) CXX11_OVERRIDE
{
if (stats.GetSymbol() != 'C')
return MOD_RES_PASSTHRU;
ServerInstance->XLines->InvokeStats("CBAN", stats);
return MOD_RES_DENY;
}
ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
{
XLine *rl = ServerInstance->XLines->MatchesLine("CBAN", cname);
if (rl)
{
// Channel is banned.
user->WriteNumeric(ERR_BADCHANNEL, cname, InspIRCd::Format("Channel %s is CBANed: %s", cname.c_str(), rl->reason.c_str()));
ServerInstance->SNO->WriteGlobalSno('a', "%s tried to join %s which is CBANed (%s)",
user->nick.c_str(), cname.c_str(), rl->reason.c_str());
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Adds the /CBAN command which allows server operators to prevent channels matching a glob from being created.", VF_COMMON | VF_VENDOR, glob ? "glob" : "");
}
};
MODULE_INIT(ModuleCBan)
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