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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
* Copyright (C) 2018 linuxdaemon <linuxdaemon.irc@gmail.com>
* Copyright (C) 2017-2018 B00mX0r <b00mx0r@aureus.pw>
* Copyright (C) 2013, 2017-2018, 2020-2021 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012-2013, 2015-2016 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012, 2018-2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2012 Jens Voss <DukePyrolator@anope.org>
* Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
* Copyright (C) 2009 John Brooks <special@inspircd.org>
* Copyright (C) 2009 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2008-2010 Craig Edwards <brain@inspircd.org>
* Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
* Copyright (C) 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/shun.h"
#include "modules/stats.h"
/** An XLineFactory specialized to generate shun pointers
*/
class ShunFactory : public XLineFactory
{
public:
ShunFactory() : XLineFactory("SHUN") { }
/** Generate a shun
*/
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 Shun(set_time, duration, source, reason, xline_specific_mask);
}
bool AutoApplyToUserList(XLine* x) CXX11_OVERRIDE
{
return false;
}
};
class CommandShun : public Command
{
public:
CommandShun(Module* Creator) : Command(Creator, "SHUN", 1, 3)
{
flags_needed = 'o';
syntax = "<nick!user@host> [<duration> :<reason>]";
}
CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE
{
/* syntax: SHUN nick!user@host time :reason goes here */
/* 'time' is a human-readable timestring, like 2d3h2s. */
std::string target = parameters[0];
User *find = ServerInstance->FindNick(target);
if ((find) && (find->registered == REG_ALL))
target = std::string("*!*@") + find->GetIPString();
if (parameters.size() == 1)
{
std::string reason;
if (ServerInstance->XLines->DelLine(parameters[0].c_str(), "SHUN", reason, user))
{
ServerInstance->SNO->WriteToSnoMask('x', "%s removed SHUN on %s: %s", user->nick.c_str(), parameters[0].c_str(), reason.c_str());
}
else if (ServerInstance->XLines->DelLine(target.c_str(), "SHUN", reason, user))
{
ServerInstance->SNO->WriteToSnoMask('x', "%s removed SHUN on %s: %s", user->nick.c_str(), target.c_str(), reason.c_str());
}
else
{
user->WriteNotice("*** Shun " + parameters[0] + " not found on the list.");
return CMD_FAILURE;
}
}
else
{
// Adding - XXX todo make this respect <insane> tag perhaps..
unsigned long duration;
std::string expr;
if (parameters.size() > 2)
{
if (!InspIRCd::Duration(parameters[1], duration))
{
user->WriteNotice("*** Invalid duration for SHUN.");
return CMD_FAILURE;
}
expr = parameters[2];
}
else
{
duration = 0;
expr = parameters[1];
}
Shun* r = new Shun(ServerInstance->Time(), duration, user->nick.c_str(), expr.c_str(), target.c_str());
if (ServerInstance->XLines->AddLine(r, user))
{
if (!duration)
{
ServerInstance->SNO->WriteToSnoMask('x', "%s added permanent SHUN for %s: %s",
user->nick.c_str(), target.c_str(), expr.c_str());
}
else
{
ServerInstance->SNO->WriteToSnoMask('x', "%s added timed SHUN for %s, expires in %s (on %s): %s",
user->nick.c_str(), target.c_str(), InspIRCd::DurationString(duration).c_str(),
InspIRCd::TimeString(ServerInstance->Time() + duration).c_str(), expr.c_str());
}
}
else
{
delete r;
user->WriteNotice("*** Shun for " + target + " 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 ModuleShun : public Module, public Stats::EventListener
{
private:
CommandShun cmd;
ShunFactory shun;
insp::flat_set<std::string, irc::insensitive_swo> cleanedcommands;
insp::flat_set<std::string, irc::insensitive_swo> enabledcommands;
bool affectopers;
bool allowconnect;
bool allowtags;
bool notifyuser;
bool IsShunned(LocalUser* user)
{
// Exempt the user if they are not fully connected and allowconnect is enabled.
if (allowconnect && user->registered != REG_ALL)
return false;
// Exempt the user from shuns if they are an oper and affectopers is disabled.
if (!affectopers && user->IsOper())
return false;
// Exempt the user from shuns if they are an oper with the servers/ignore-shun privilege.
if (user->HasPrivPermission("servers/ignore-shun"))
return false;
// Check whether the user is actually shunned.
return ServerInstance->XLines->MatchesLine("SHUN", user);
}
public:
ModuleShun()
: Stats::EventListener(this)
, cmd(this)
{
}
void init() CXX11_OVERRIDE
{
ServerInstance->XLines->RegisterFactory(&shun);
}
~ModuleShun()
{
ServerInstance->XLines->DelAll("SHUN");
ServerInstance->XLines->UnregisterFactory(&shun);
}
void Prioritize() CXX11_OVERRIDE
{
Module* alias = ServerInstance->Modules->Find("m_alias.so");
ServerInstance->Modules->SetPriority(this, I_OnPreCommand, PRIORITY_BEFORE, alias);
}
ModResult OnStats(Stats::Context& stats) CXX11_OVERRIDE
{
if (stats.GetSymbol() != 'H')
return MOD_RES_PASSTHRU;
ServerInstance->XLines->InvokeStats("SHUN", stats);
return MOD_RES_DENY;
}
void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
ConfigTag* tag = ServerInstance->Config->ConfValue("shun");
cleanedcommands.clear();
irc::spacesepstream cleanedcmds(tag->getString("cleanedcommands", "AWAY PART QUIT"));
for (std::string cleanedcmd; cleanedcmds.GetToken(cleanedcmd); )
cleanedcommands.insert(cleanedcmd);
enabledcommands.clear();
irc::spacesepstream enabledcmds(tag->getString("enabledcommands", "ADMIN OPER PING PONG QUIT", 1));
for (std::string enabledcmd; enabledcmds.GetToken(enabledcmd); )
enabledcommands.insert(enabledcmd);
affectopers = tag->getBool("affectopers", false);
allowtags = tag->getBool("allowtags");
allowconnect = tag->getBool("allowconnect");
notifyuser = tag->getBool("notifyuser", true);
}
ModResult OnPreCommand(std::string& command, CommandBase::Params& parameters, LocalUser* user, bool validated) CXX11_OVERRIDE
{
if (validated || !IsShunned(user))
return MOD_RES_PASSTHRU;
if (!enabledcommands.count(command))
{
if (notifyuser)
user->WriteNotice("*** " + command + " command not processed as you have been blocked from issuing commands.");
return MOD_RES_DENY;
}
if (!allowtags)
{
// Remove all client tags.
ClientProtocol::TagMap& tags = parameters.GetTags();
for (ClientProtocol::TagMap::iterator tag = tags.begin(); tag != tags.end(); )
{
if (tag->first[0] == '+')
tag = tags.erase(tag);
else
tag++;
}
}
if (cleanedcommands.count(command))
{
if (command == "AWAY" && !parameters.empty())
{
// Allow away but only for unsetting.
parameters.clear();
}
else if (command == "PART" && parameters.size() > 1)
{
// Allow part but strip the message.
parameters.pop_back();
}
else if (command == "QUIT" && !parameters.empty())
{
// Allow quit but strip the message.
parameters.clear();
}
}
return MOD_RES_PASSTHRU;
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Adds the /SHUN command which allows server operators to prevent users from executing commands.", VF_VENDOR|VF_COMMON);
}
};
MODULE_INIT(ModuleShun)
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