src/modules/m_timedbans.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $ModDesc: Adds timed bans */
  15
  16 #include "inspircd.h"
  17
  18 /** Holds a timed ban
  19  */
  20 class TimedBan
  21 {
  22  public:
  23         std::string channel;
  24         std::string mask;
  25         time_t expire;
  26 };
  27
  28 typedef std::vector<TimedBan> timedbans;
  29 timedbans TimedBanList;
  30
  31 /** Handle /TBAN
  32  */
  33 class CommandTban : public Command
  34 {
  35  public:
  36         CommandTban(Module* Creator) : Command(Creator,"TBAN", 3)
  37         {
  38                 syntax = "<channel> <duration> <banmask>";
  39                 TRANSLATE4(TR_TEXT, TR_TEXT, TR_TEXT, TR_END);
  40         }
  41
  42         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  43         {
  44                 Channel* channel = ServerInstance->FindChan(parameters[0]);
  45                 if (channel)
  46                 {
  47                         int cm = channel->GetPrefixValue(user);
  48                         if ((cm == HALFOP_VALUE) || (cm == OP_VALUE))
  49                         {
  50                                 if (!ServerInstance->IsValidMask(parameters[2]))
  51                                 {
  52                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban mask");
  53                                         return CMD_FAILURE;
  54                                 }
  55                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  56                                 {
  57                                         if (!strcasecmp(i->data.c_str(), parameters[2].c_str()))
  58                                         {
  59                                                 user->WriteServ("NOTICE "+std::string(user->nick)+" :The ban "+parameters[2]+" is already on the banlist of "+parameters[0]);
  60                                                 return CMD_FAILURE;
  61                                         }
  62                                 }
  63                                 TimedBan T;
  64                                 std::string channelname = parameters[0];
  65                                 long duration = ServerInstance->Duration(parameters[1]);
  66                                 unsigned long expire = duration + ServerInstance->Time();
  67                                 if (duration < 1)
  68                                 {
  69                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban time");
  70                                         return CMD_FAILURE;
  71                                 }
  72                                 std::string mask = parameters[2];
  73                                 std::vector<std::string> setban;
  74                                 setban.push_back(parameters[0]);
  75                                 setban.push_back("+b");
  76                                 setban.push_back(parameters[2]);
  77                                 // use CallCommandHandler to make it so that the user sets the mode
  78                                 // themselves
  79                                 ServerInstance->CallCommandHandler("MODE",setban,user);
  80                                 /* Check if the ban was actually added (e.g. banlist was NOT full) */
  81                                 bool was_added = false;
  82                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  83                                         if (!strcasecmp(i->data.c_str(), mask.c_str()))
  84                                                 was_added = true;
  85                                 if (was_added)
  86                                 {
  87                                         CUList tmp;
  88                                         T.channel = channelname;
  89                                         T.mask = mask;
  90                                         T.expire = expire;
  91                                         TimedBanList.push_back(T);
  92                                         channel->WriteAllExcept(user, 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);
  93                                         ServerInstance->PI->SendChannelNotice(channel, '@', user->nick + " added a timed ban on " + mask + " lasting for " + ConvToStr(duration) + " seconds.");
  94                                         return CMD_SUCCESS;
  95                                 }
  96                                 return CMD_FAILURE;
  97                         }
  98                         else
  99                         {
 100                                 user->WriteNumeric(482, "%s %s :You do not have permission to change modes on this channel",
 101                                         user->nick.c_str(), channel->name.c_str());
 102                         }
 103                         return CMD_FAILURE;
 104                 }
 105                 user->WriteNumeric(401, "%s %s :No such channel",user->nick.c_str(), parameters[0].c_str());
 106                 return CMD_FAILURE;
 107         }
 108
 109         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
 110         {
 111                 return ROUTE_BROADCAST;
 112         }
 113 };
 114
 115 class ModuleTimedBans : public Module
 116 {
 117         CommandTban cmd;
 118  public:
 119         ModuleTimedBans()
 120                 : cmd(this)
 121         {
 122                 ServerInstance->AddCommand(&cmd);
 123                 TimedBanList.clear();
 124                 Implementation eventlist[] = { I_OnDelBan, I_OnBackgroundTimer };
 125                 ServerInstance->Modules->Attach(eventlist, this, 2);
 126         }
 127
 128         virtual ~ModuleTimedBans()
 129         {
 130                 TimedBanList.clear();
 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                 for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end();)
 153                 {
 154                         if (curtime > i->expire)
 155                         {
 156                                 std::string chan = i->channel;
 157                                 std::string mask = i->mask;
 158                                 Channel* cr = ServerInstance->FindChan(chan);
 159                                 i = TimedBanList.erase(i);
 160                                 if (cr)
 161                                 {
 162                                         std::vector<std::string> setban;
 163                                         setban.push_back(chan);
 164                                         setban.push_back("-b");
 165                                         setban.push_back(mask);
 166
 167                                         CUList empty;
 168                                         std::string expiry = "*** Timed ban on " + chan + " expired.";
 169                                         cr->WriteAllExcept(ServerInstance->FakeClient, true, '@', empty, "NOTICE %s :%s", cr->name.c_str(), expiry.c_str());
 170                                         ServerInstance->PI->SendChannelNotice(cr, '@', expiry);
 171
 172                                         ServerInstance->SendMode(setban, ServerInstance->FakeClient);
 173                                         ServerInstance->PI->SendMode(chan, ServerInstance->Modes->GetLastParseParams(), ServerInstance->Modes->GetLastParseTranslate());
 174                                 }
 175                         }
 176                         else
 177                                 ++i;
 178                 }
 179         }
 180
 181         virtual Version GetVersion()
 182         {
 183                 return Version("Adds timed bans", VF_COMMON | VF_VENDOR);
 184         }
 185 };
 186
 187 MODULE_INIT(ModuleTimedBans)
 188