/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2019 Matt Schatz * Copyright (C) 2018 linuxdaemon * Copyright (C) 2017-2018 B00mX0r * Copyright (C) 2013, 2017-2018, 2020 Sadie Powell * Copyright (C) 2012-2013, 2015-2016 Attila Molnar * Copyright (C) 2012, 2018-2019 Robby * Copyright (C) 2012 Jens Voss * Copyright (C) 2009 Uli Schlachter * Copyright (C) 2009 John Brooks * Copyright (C) 2009 Dennis Friis * Copyright (C) 2009 Daniel De Graaf * Copyright (C) 2008-2010 Craig Edwards * Copyright (C) 2008 Thomas Stagner * Copyright (C) 2008 Robin Burchell * * 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 "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 = " [ :]"; } 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 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 cleanedcommands; insp::flat_set 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)