src/modules/m_timedbans.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 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 : public classbase
  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 (InspIRCd* Instance) : Command(Instance,"TBAN", 0, 3)
  37         {
  38                 this->source = "m_timedbans.so";
  39                 syntax = "<channel> <duration> <banmask>";
  40                 TRANSLATE4(TR_TEXT, TR_TEXT, TR_TEXT, TR_END);
  41         }
  42
  43         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  44         {
  45                 Channel* channel = ServerInstance->FindChan(parameters[0]);
  46                 if (channel)
  47                 {
  48                         int cm = channel->GetStatus(user);
  49                         if ((cm == STATUS_HOP) || (cm == STATUS_OP))
  50                         {
  51                                 if (!ServerInstance->IsValidMask(parameters[2]))
  52                                 {
  53                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban mask");
  54                                         return CMD_FAILURE;
  55                                 }
  56                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  57                                 {
  58                                         if (!strcasecmp(i->data.c_str(), parameters[2].c_str()))
  59                                         {
  60                                                 user->WriteServ("NOTICE "+std::string(user->nick)+" :The ban "+parameters[2]+" is already on the banlist of "+parameters[0]);
  61                                                 return CMD_FAILURE;
  62                                         }
  63                                 }
  64                                 TimedBan T;
  65                                 std::string channelname = parameters[0];
  66                                 long duration = ServerInstance->Duration(parameters[1]);
  67                                 unsigned long expire = duration + ServerInstance->Time();
  68                                 if (duration < 1)
  69                                 {
  70                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban time");
  71                                         return CMD_FAILURE;
  72                                 }
  73                                 std::string mask = parameters[2];
  74                                 std::vector<std::string> setban;
  75                                 setban.push_back(parameters[0]);
  76                                 setban.push_back("+b");
  77                                 setban.push_back(parameters[2]);
  78                                 // use CallCommandHandler to make it so that the user sets the mode
  79                                 // themselves
  80                                 ServerInstance->CallCommandHandler("MODE",setban,user);
  81                                 /* Check if the ban was actually added (e.g. banlist was NOT full) */
  82                                 bool was_added = false;
  83                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  84                                         if (!strcasecmp(i->data.c_str(), mask.c_str()))
  85                                                 was_added = true;
  86                                 if (was_added)
  87                                 {
  88                                         CUList tmp;
  89                                         T.channel = channelname;
  90                                         T.mask = mask;
  91                                         T.expire = expire;
  92                                         TimedBanList.push_back(T);
  93                                         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);
  94                                         ServerInstance->PI->SendChannelNotice(channel, '@', user->nick + " added a timed ban on " + mask + " lasting for " + ConvToStr(duration) + " seconds.");
  95                                         if (ServerInstance->Config->AllowHalfop)
  96                                         {
  97                                                 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);
  98                                                 ServerInstance->PI->SendChannelNotice(channel, '%', user->nick + " added a timed ban on " + mask + " lasting for " + ConvToStr(duration) + " seconds.");
  99                                         }
 100                                         return CMD_SUCCESS;
 101                                 }
 102                                 return CMD_FAILURE;
 103                         }
 104                         else user->WriteNumeric(482, "%s %s :You must be at least a%soperator to change modes on this channel",user->nick.c_str(), channel->name.c_str(),
 105                                         ServerInstance->Config->AllowHalfop ? " half-" : " channel ");
 106                         return CMD_FAILURE;
 107                 }
 108                 user->WriteNumeric(401, "%s %s :No such channel",user->nick.c_str(), parameters[0].c_str());
 109                 return CMD_FAILURE;
 110         }
 111 };
 112
 113 class ModuleTimedBans : public Module
 114 {
 115         CommandTban* mycommand;
 116  public:
 117         ModuleTimedBans(InspIRCd* Me)
 118                 : Module(Me)
 119         {
 120
 121                 mycommand = new CommandTban(ServerInstance);
 122                 ServerInstance->AddCommand(mycommand);
 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 int 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 0;
 148         }
 149
 150         virtual void OnBackgroundTimer(time_t curtime)
 151         {
 152                 timedbans::iterator safei;
 153                 for (timedbans::iterator i = TimedBanList.begin(); i < TimedBanList.end();)
 154                 {
 155                         /* Safe copy of iterator, so we can erase as we iterate */
 156                         safei = i;
 157                         ++i;
 158
 159                         if (curtime > safei->expire)
 160                         {
 161                                 Channel* cr = ServerInstance->FindChan(safei->channel);
 162                                 if (cr)
 163                                 {
 164                                         std::string mask = safei->mask;
 165                                         std::vector<std::string> setban;
 166                                         setban.push_back(safei->channel);
 167                                         setban.push_back("-b");
 168                                         setban.push_back(mask);
 169
 170                                         CUList empty;
 171                                         cr->WriteAllExcept(ServerInstance->FakeClient, true, '@', empty, "NOTICE %s :*** Timed ban on %s expired.", cr->name.c_str(), safei->mask.c_str());
 172                                         ServerInstance->PI->SendChannelNotice(cr, '@', "*** Timed ban on " + safei->mask + " expired.");
 173                                         if (ServerInstance->Config->AllowHalfop)
 174                                         {
 175                                                 cr->WriteAllExcept(ServerInstance->FakeClient, true, '%', empty, "NOTICE %s :*** Timed ban on %s expired.", cr->name.c_str(), safei->mask.c_str());
 176                                                 ServerInstance->PI->SendChannelNotice(cr, '%', "*** Timed ban on " + safei->mask + " expired.");
 177                                         }
 178
 179                                         /* Removes the ban item for us, no ::erase() needed */
 180                                         ServerInstance->PI->SendModeStr(safei->channel, std::string("-b ") + setban[2]);
 181                                         ServerInstance->SendMode(setban, ServerInstance->FakeClient);
 182
 183                                         if (ServerInstance->Modes->GetLastParse().empty())
 184                                                 TimedBanList.erase(safei);
 185                                 }
 186                                 else
 187                                 {
 188                                         /* Where the hell did our channel go?! */
 189                                         TimedBanList.erase(safei);
 190                                 }
 191                         }
 192                 }
 193         }
 194
 195         virtual Version GetVersion()
 196         {
 197                 return Version("$Id$", VF_COMMON | VF_VENDOR, API_VERSION);
 198         }
 199 };
 200
 201 MODULE_INIT(ModuleTimedBans)
 202