src/modules/m_timedbans.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2005-2008 Craig Edwards <craigedwards@brainbox.cc>
   6  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2006 Robin Burchell <robin+git@viroteck.net>
   8  *
   9  * This file is part of InspIRCd.  InspIRCd is free software: you can
  10  * redistribute it and/or modify it under the terms of the GNU General Public
  11  * License as published by the Free Software Foundation, version 2.
  12  *
  13  * This program is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  15  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  16  * details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22
  23 /* $ModDesc: Adds timed bans */
  24
  25 #include "inspircd.h"
  26
  27 /** Holds a timed ban
  28  */
  29 class TimedBan
  30 {
  31  public:
  32         std::string channel;
  33         std::string mask;
  34         time_t expire;
  35 };
  36
  37 typedef std::vector<TimedBan> timedbans;
  38 timedbans TimedBanList;
  39
  40 /** Handle /TBAN
  41  */
  42 class CommandTban : public Command
  43 {
  44  public:
  45         CommandTban(Module* Creator) : Command(Creator,"TBAN", 3)
  46         {
  47                 syntax = "<channel> <duration> <banmask>";
  48                 TRANSLATE4(TR_TEXT, TR_TEXT, TR_TEXT, TR_END);
  49         }
  50
  51         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  52         {
  53                 Channel* channel = ServerInstance->FindChan(parameters[0]);
  54                 if (!channel)
  55                 {
  56                         user->WriteNumeric(401, "%s %s :No such channel",user->nick.c_str(), parameters[0].c_str());
  57                         return CMD_FAILURE;
  58                 }
  59                 int cm = channel->GetPrefixValue(user);
  60                 if (cm < HALFOP_VALUE)
  61                 {
  62                         user->WriteNumeric(482, "%s %s :You do not have permission to set bans on this channel",
  63                                 user->nick.c_str(), channel->name.c_str());
  64                         return CMD_FAILURE;
  65                 }
  66                 if (!ServerInstance->IsValidMask(parameters[2]))
  67                 {
  68                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban mask");
  69                         return CMD_FAILURE;
  70                 }
  71                 TimedBan T;
  72                 std::string channelname = parameters[0];
  73                 long duration = ServerInstance->Duration(parameters[1]);
  74                 unsigned long expire = duration + ServerInstance->Time();
  75                 if (duration < 1)
  76                 {
  77                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban time");
  78                         return CMD_FAILURE;
  79                 }
  80                 std::string mask = parameters[2];
  81                 std::vector<std::string> setban;
  82                 setban.push_back(parameters[0]);
  83                 setban.push_back("+b");
  84                 setban.push_back(parameters[2]);
  85                 // use CallCommandHandler to make it so that the user sets the mode
  86                 // themselves
  87                 ServerInstance->CallCommandHandler("MODE",setban,user);
  88                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  89                         if (!strcasecmp(i->data.c_str(), mask.c_str()))
  90                                 goto found;
  91                 return CMD_FAILURE;
  92 found:
  93                 CUList tmp;
  94                 T.channel = channelname;
  95                 T.mask = mask;
  96                 T.expire = expire + (IS_REMOTE(user) ? 5 : 0);
  97                 TimedBanList.push_back(T);
  98                 channel->WriteAllExcept(ServerInstance->FakeClient, true, '@', tmp, "NOTICE %s :%s added a timed ban on %s lasting for %ld seconds.", channel->name.c_str(), user->nick.c_str(), mask.c_str(), duration);
  99                 return CMD_SUCCESS;
 100         }
 101
 102         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
 103         {
 104                 return ROUTE_BROADCAST;
 105         }
 106 };
 107
 108 class ModuleTimedBans : public Module
 109 {
 110         CommandTban cmd;
 111  public:
 112         ModuleTimedBans()
 113                 : cmd(this)
 114         {
 115                 ServerInstance->AddCommand(&cmd);
 116                 TimedBanList.clear();
 117                 Implementation eventlist[] = { I_OnDelBan, I_OnBackgroundTimer };
 118                 ServerInstance->Modules->Attach(eventlist, this, 2);
 119         }
 120
 121         virtual ~ModuleTimedBans()
 122         {
 123                 TimedBanList.clear();
 124         }
 125
 126         virtual ModResult OnDelBan(User* source, Channel* chan, const std::string &banmask)
 127         {
 128                 irc::string listitem = banmask.c_str();
 129                 irc::string thischan = chan->name.c_str();
 130                 for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end(); i++)
 131                 {
 132                         irc::string target = i->mask.c_str();
 133                         irc::string tchan = i->channel.c_str();
 134                         if ((listitem == target) && (tchan == thischan))
 135                         {
 136                                 TimedBanList.erase(i);
 137                                 break;
 138                         }
 139                 }
 140                 return MOD_RES_PASSTHRU;
 141         }
 142
 143         virtual void OnBackgroundTimer(time_t curtime)
 144         {
 145                 timedbans expired;
 146                 for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end();)
 147                 {
 148                         if (curtime > i->expire)
 149                         {
 150                                 expired.push_back(*i);
 151                                 i = TimedBanList.erase(i);
 152                         }
 153                         else
 154                                 ++i;
 155                 }
 156
 157                 for (timedbans::iterator i = expired.begin(); i != expired.end(); i++)
 158                 {
 159                         std::string chan = i->channel;
 160                         std::string mask = i->mask;
 161                         Channel* cr = ServerInstance->FindChan(chan);
 162                         if (cr)
 163                         {
 164                                 std::vector<std::string> setban;
 165                                 setban.push_back(chan);
 166                                 setban.push_back("-b");
 167                                 setban.push_back(mask);
 168
 169                                 CUList empty;
 170                                 std::string expiry = "*** Timed ban on " + chan + " expired.";
 171                                 cr->WriteAllExcept(ServerInstance->FakeClient, true, '@', empty, "NOTICE %s :%s", cr->name.c_str(), expiry.c_str());
 172                                 ServerInstance->PI->SendChannelNotice(cr, '@', expiry);
 173
 174                                 ServerInstance->SendGlobalMode(setban, ServerInstance->FakeClient);
 175                         }
 176                 }
 177         }
 178
 179         virtual Version GetVersion()
 180         {
 181                 return Version("Adds timed bans", VF_COMMON | VF_VENDOR);
 182         }
 183 };
 184
 185 MODULE_INIT(ModuleTimedBans)
 186