/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2009-2010 Daniel De Graaf * Copyright (C) 2005-2008 Craig Edwards * Copyright (C) 2007 Dennis Friis * Copyright (C) 2006 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 . */ /* $ModDesc: Adds timed bans */ #include "inspircd.h" /** Holds a timed ban */ class TimedBan { public: std::string channel; std::string mask; time_t expire; Channel* chan; }; typedef std::vector timedbans; timedbans TimedBanList; /** Handle /TBAN */ class CommandTban : public Command { static bool IsBanSet(Channel* chan, const std::string& mask) { for (BanList::const_iterator i = chan->bans.begin(); i != chan->bans.end(); ++i) { if (!strcasecmp(i->data.c_str(), mask.c_str())) return true; } return false; } public: CommandTban(Module* Creator) : Command(Creator,"TBAN", 3) { syntax = " "; TRANSLATE4(TR_TEXT, TR_TEXT, TR_TEXT, TR_END); } CmdResult Handle (const std::vector ¶meters, User *user) { Channel* channel = ServerInstance->FindChan(parameters[0]); if (!channel) { user->WriteNumeric(401, "%s %s :No such channel",user->nick.c_str(), parameters[0].c_str()); return CMD_FAILURE; } int cm = channel->GetPrefixValue(user); if (cm < HALFOP_VALUE) { user->WriteNumeric(482, "%s %s :You do not have permission to set bans on this channel", user->nick.c_str(), channel->name.c_str()); return CMD_FAILURE; } TimedBan T; std::string channelname = parameters[0]; long duration = ServerInstance->Duration(parameters[1]); unsigned long expire = duration + ServerInstance->Time(); if (duration < 1) { user->WriteServ("NOTICE "+user->nick+" :Invalid ban time"); return CMD_FAILURE; } std::string mask = parameters[2]; std::vector setban; setban.push_back(parameters[0]); setban.push_back("+b"); bool isextban = ((mask.size() > 2) && (mask[1] == ':')); if (!isextban && !ServerInstance->IsValidMask(mask)) mask.append("!*@*"); if ((mask.length() > 250) || (!ServerInstance->IsValidMask(mask) && !isextban)) { user->WriteServ("NOTICE "+user->nick+" :Invalid ban mask"); return CMD_FAILURE; } if (IsBanSet(channel, mask)) { user->WriteServ("NOTICE %s :Ban already set", user->nick.c_str()); return CMD_FAILURE; } setban.push_back(mask); // use CallHandler to make it so that the user sets the mode // themselves ServerInstance->Parser->CallHandler("MODE",setban,user); if (!IsBanSet(channel, mask)) return CMD_FAILURE; CUList tmp; T.channel = channelname; T.mask = mask; T.expire = expire + (IS_REMOTE(user) ? 5 : 0); T.chan = channel; TimedBanList.push_back(T); const std::string addban = user->nick + " added a timed ban on " + mask + " lasting for " + ConvToStr(duration) + " seconds."; // If halfop is loaded, send notice to halfops and above, otherwise send to ops and above ModeHandler* mh = ServerInstance->Modes->FindMode('h', MODETYPE_CHANNEL); char pfxchar = (mh && mh->name == "halfop") ? mh->GetPrefix() : '@'; channel->WriteAllExcept(ServerInstance->FakeClient, true, pfxchar, tmp, "NOTICE %s :%s", channel->name.c_str(), addban.c_str()); ServerInstance->PI->SendChannelNotice(channel, pfxchar, addban); return CMD_SUCCESS; } RouteDescriptor GetRouting(User* user, const std::vector& parameters) { return ROUTE_BROADCAST; } }; class ChannelMatcher { Channel* const chan; public: ChannelMatcher(Channel* ch) : chan(ch) { } bool operator()(const TimedBan& tb) const { return (tb.chan == chan); } }; class ModuleTimedBans : public Module { CommandTban cmd; public: ModuleTimedBans() : cmd(this) { } void init() { ServerInstance->Modules->AddService(cmd); Implementation eventlist[] = { I_OnDelBan, I_OnBackgroundTimer, I_OnChannelDelete }; ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation)); } virtual ModResult OnDelBan(User* source, Channel* chan, const std::string &banmask) { irc::string listitem = banmask.c_str(); irc::string thischan = chan->name.c_str(); for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end(); i++) { irc::string target = i->mask.c_str(); irc::string tchan = i->channel.c_str(); if ((listitem == target) && (tchan == thischan)) { TimedBanList.erase(i); break; } } return MOD_RES_PASSTHRU; } virtual void OnBackgroundTimer(time_t curtime) { timedbans expired; for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end();) { if (curtime > i->expire) { expired.push_back(*i); i = TimedBanList.erase(i); } else ++i; } for (timedbans::iterator i = expired.begin(); i != expired.end(); i++) { std::string chan = i->channel; std::string mask = i->mask; Channel* cr = ServerInstance->FindChan(chan); if (cr) { std::vector setban; setban.push_back(chan); setban.push_back("-b"); setban.push_back(mask); CUList empty; const std::string expiry = "*** Timed ban on " + chan + " expired."; // If halfop is loaded, send notice to halfops and above, otherwise send to ops and above ModeHandler* mh = ServerInstance->Modes->FindMode('h', MODETYPE_CHANNEL); char pfxchar = (mh && mh->name == "halfop") ? mh->GetPrefix() : '@'; cr->WriteAllExcept(ServerInstance->FakeClient, true, pfxchar, empty, "NOTICE %s :%s", cr->name.c_str(), expiry.c_str()); ServerInstance->PI->SendChannelNotice(cr, pfxchar, expiry); ServerInstance->SendGlobalMode(setban, ServerInstance->FakeClient); } } } void OnChannelDelete(Channel* chan) { // Remove all timed bans affecting the channel from internal bookkeeping TimedBanList.erase(std::remove_if(TimedBanList.begin(), TimedBanList.end(), ChannelMatcher(chan)), TimedBanList.end()); } virtual Version GetVersion() { return Version("Adds timed bans", VF_COMMON | VF_VENDOR); } }; MODULE_INIT(ModuleTimedBans)