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
  67                 TimedBan T;
  68                 std::string channelname = parameters[0];
  69                 long duration = ServerInstance->Duration(parameters[1]);
  70                 unsigned long expire = duration + ServerInstance->Time();
  71                 if (duration < 1)
  72                 {
  73                         user->WriteServ("NOTICE "+user->nick+" :Invalid ban time");
  74                         return CMD_FAILURE;
  75                 }
  76                 std::string mask = parameters[2];
  77                 std::vector<std::string> setban;
  78                 setban.push_back(parameters[0]);
  79                 setban.push_back("+b");
  80                 bool isextban = ((mask.size() > 2) && (mask[1] == ':'));
  81                 if (!isextban && !ServerInstance->IsValidMask(mask))
  82                         mask.append("!*@*");
  83                 if ((mask.length() > 250) || (!ServerInstance->IsValidMask(mask) && !isextban))
  84                 {
  85                         user->WriteServ("NOTICE "+user->nick+" :Invalid ban mask");
  86                         return CMD_FAILURE;
  87                 }
  88                 setban.push_back(mask);
  89                 // use CallHandler to make it so that the user sets the mode
  90                 // themselves
  91                 ServerInstance->Parser->CallHandler("MODE",setban,user);
  92                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  93                         if (!strcasecmp(i->data.c_str(), mask.c_str()))
  94                                 goto found;
  95                 return CMD_FAILURE;
  96 found:
  97                 CUList tmp;
  98                 T.channel = channelname;
  99                 T.mask = mask;
 100                 T.expire = expire + (IS_REMOTE(user) ? 5 : 0);
 101                 TimedBanList.push_back(T);
 102
 103                 // If halfop is loaded, send notice to halfops and above, otherwise send to ops and above
 104                 ModeHandler* mh = ServerInstance->Modes->FindMode('h', MODETYPE_CHANNEL);
 105                 char pfxchar = (mh && mh->name == "halfop") ? '%' : '@';
 106
 107                 channel->WriteAllExcept(ServerInstance->FakeClient, true, pfxchar, 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);
 108                 return CMD_SUCCESS;
 109         }
 110
 111         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
 112         {
 113                 return ROUTE_BROADCAST;
 114         }
 115 };
 116
 117 class ModuleTimedBans : public Module
 118 {
 119         CommandTban cmd;
 120  public:
 121         ModuleTimedBans()
 122                 : cmd(this)
 123         {
 124         }
 125
 126         void init()
 127         {
 128                 ServerInstance->Modules->AddService(cmd);
 129                 Implementation eventlist[] = { I_OnDelBan, I_OnBackgroundTimer };
 130                 ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
 131         }
 132
 133         virtual ModResult OnDelBan(User* source, Channel* chan, const std::string &banmask)
 134         {
 135                 irc::string listitem = banmask.c_str();
 136                 irc::string thischan = chan->name.c_str();
 137                 for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end(); i++)
 138                 {
 139                         irc::string target = i->mask.c_str();
 140                         irc::string tchan = i->channel.c_str();
 141                         if ((listitem == target) && (tchan == thischan))
 142                         {
 143                                 TimedBanList.erase(i);
 144                                 break;
 145                         }
 146                 }
 147                 return MOD_RES_PASSTHRU;
 148         }
 149
 150         virtual void OnBackgroundTimer(time_t curtime)
 151         {
 152                 timedbans expired;
 153                 for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end();)
 154                 {
 155                         if (curtime > i->expire)
 156                         {
 157                                 expired.push_back(*i);
 158                                 i = TimedBanList.erase(i);
 159                         }
 160                         else
 161                                 ++i;
 162                 }
 163
 164                 for (timedbans::iterator i = expired.begin(); i != expired.end(); i++)
 165                 {
 166                         std::string chan = i->channel;
 167                         std::string mask = i->mask;
 168                         Channel* cr = ServerInstance->FindChan(chan);
 169                         if (cr)
 170                         {
 171                                 std::vector<std::string> setban;
 172                                 setban.push_back(chan);
 173                                 setban.push_back("-b");
 174                                 setban.push_back(mask);
 175
 176                                 CUList empty;
 177                                 std::string expiry = "*** Timed ban on " + chan + " expired.";
 178                                 cr->WriteAllExcept(ServerInstance->FakeClient, true, '@', empty, "NOTICE %s :%s", cr->name.c_str(), expiry.c_str());
 179                                 ServerInstance->PI->SendChannelNotice(cr, '@', expiry);
 180
 181                                 ServerInstance->SendGlobalMode(setban, ServerInstance->FakeClient);
 182                         }
 183                 }
 184         }
 185
 186         virtual Version GetVersion()
 187         {
 188                 return Version("Adds timed bans", VF_COMMON | VF_VENDOR);
 189         }
 190 };
 191
 192 MODULE_INIT(ModuleTimedBans)
 193