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                         user->WriteNumeric(401, "%s %s :No such channel",user->nick.c_str(), parameters[0].c_str());
  48                         return CMD_FAILURE;
  49                 }
  50                 int cm = channel->GetPrefixValue(user);
  51                 if (cm < HALFOP_VALUE)
  52                 {
  53                         user->WriteNumeric(482, "%s %s :You do not have permission to set bans on this channel",
  54                                 user->nick.c_str(), channel->name.c_str());
  55                         return CMD_FAILURE;
  56                 }
  57                 if (!ServerInstance->IsValidMask(parameters[2]))
  58                 {
  59                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban mask");
  60                         return CMD_FAILURE;
  61                 }
  62                 TimedBan T;
  63                 std::string channelname = parameters[0];
  64                 long duration = ServerInstance->Duration(parameters[1]);
  65                 unsigned long expire = duration + ServerInstance->Time();
  66                 if (duration < 1)
  67                 {
  68                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban time");
  69                         return CMD_FAILURE;
  70                 }
  71                 std::string mask = parameters[2];
  72                 std::vector<std::string> setban;
  73                 setban.push_back(parameters[0]);
  74                 setban.push_back("+b");
  75                 setban.push_back(parameters[2]);
  76                 // use CallCommandHandler to make it so that the user sets the mode
  77                 // themselves
  78                 ServerInstance->CallCommandHandler("MODE",setban,user);
  79                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  80                         if (!strcasecmp(i->data.c_str(), mask.c_str()))
  81                                 goto found;
  82                 return CMD_FAILURE;
  83 found:
  84                 CUList tmp;
  85                 T.channel = channelname;
  86                 T.mask = mask;
  87                 T.expire = expire;
  88                 TimedBanList.push_back(T);
  89                 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);
  90                 ServerInstance->PI->SendChannelNotice(channel, '@', user->nick + " added a timed ban on " + mask + " lasting for " + ConvToStr(duration) + " seconds.");
  91                 return CMD_SUCCESS;
  92         }
  93
  94         RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
  95         {
  96                 return ROUTE_BROADCAST;
  97         }
  98 };
  99
 100 class ModuleTimedBans : public Module
 101 {
 102         CommandTban cmd;
 103  public:
 104         ModuleTimedBans()
 105                 : cmd(this)
 106         {
 107                 ServerInstance->AddCommand(&cmd);
 108                 TimedBanList.clear();
 109                 Implementation eventlist[] = { I_OnDelBan, I_OnBackgroundTimer };
 110                 ServerInstance->Modules->Attach(eventlist, this, 2);
 111         }
 112
 113         virtual ~ModuleTimedBans()
 114         {
 115                 TimedBanList.clear();
 116         }
 117
 118         virtual ModResult OnDelBan(User* source, Channel* chan, const std::string &banmask)
 119         {
 120                 irc::string listitem = banmask.c_str();
 121                 irc::string thischan = chan->name.c_str();
 122                 for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end(); i++)
 123                 {
 124                         irc::string target = i->mask.c_str();
 125                         irc::string tchan = i->channel.c_str();
 126                         if ((listitem == target) && (tchan == thischan))
 127                         {
 128                                 TimedBanList.erase(i);
 129                                 break;
 130                         }
 131                 }
 132                 return MOD_RES_PASSTHRU;
 133         }
 134
 135         virtual void OnBackgroundTimer(time_t curtime)
 136         {
 137                 for (timedbans::iterator i = TimedBanList.begin(); i != TimedBanList.end();)
 138                 {
 139                         if (curtime > i->expire)
 140                         {
 141                                 std::string chan = i->channel;
 142                                 std::string mask = i->mask;
 143                                 Channel* cr = ServerInstance->FindChan(chan);
 144                                 i = TimedBanList.erase(i);
 145                                 if (cr)
 146                                 {
 147                                         std::vector<std::string> setban;
 148                                         setban.push_back(chan);
 149                                         setban.push_back("-b");
 150                                         setban.push_back(mask);
 151
 152                                         CUList empty;
 153                                         std::string expiry = "*** Timed ban on " + chan + " expired.";
 154                                         cr->WriteAllExcept(ServerInstance->FakeClient, true, '@', empty, "NOTICE %s :%s", cr->name.c_str(), expiry.c_str());
 155                                         ServerInstance->PI->SendChannelNotice(cr, '@', expiry);
 156
 157                                         ServerInstance->SendGlobalMode(setban, ServerInstance->FakeClient);
 158                                 }
 159                         }
 160                         else
 161                                 ++i;
 162                 }
 163         }
 164
 165         virtual Version GetVersion()
 166         {
 167                 return Version("Adds timed bans", VF_COMMON | VF_VENDOR);
 168         }
 169 };
 170
 171 MODULE_INIT(ModuleTimedBans)
 172