src/modules/m_timedbans.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/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 cmd_tban : public command_t
  34 {
  35  public:
  36  cmd_tban (InspIRCd* Instance) : command_t(Instance,"TBAN", 0, 3)
  37         {
  38                 this->source = "m_timedbans.so";
  39                 syntax = "<channel> <duration> <banmask>";
  40         }
  41
  42         CmdResult Handle (const char** parameters, int pcnt, userrec *user)
  43         {
  44                 chanrec* channel = ServerInstance->FindChan(parameters[0]);
  45                 if (channel)
  46                 {
  47                         int cm = channel->GetStatus(user);
  48                         if ((cm == STATUS_HOP) || (cm == STATUS_OP))
  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,parameters[2]))
  58                                         {
  59                                                 user->WriteServ("NOTICE "+std::string(user->nick)+" :The ban "+std::string(parameters[2])+" is already on the banlist of "+std::string(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 + time(NULL);
  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                                 const char *setban[32];
  74                                 setban[0] = parameters[0];
  75                                 setban[1] = "+b";
  76                                 setban[2] = parameters[2];
  77                                 // use CallCommandHandler to make it so that the user sets the mode
  78                                 // themselves
  79                                 ServerInstance->CallCommandHandler("MODE",setban,3,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,mask.c_str()))
  84                                                 was_added = true;
  85                                 if (was_added)
  86                                 {
  87                                         T.channel = channelname;
  88                                         T.mask = mask;
  89                                         T.expire = expire;
  90                                         TimedBanList.push_back(T);
  91                                         channel->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s added a timed ban on %s lasting for %ld seconds.", channel->name, user->nick, mask.c_str(), duration);
  92                                         return CMD_SUCCESS;
  93                                 }
  94                                 return CMD_FAILURE;
  95                         }
  96                         else user->WriteServ("482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, channel->name);
  97                         return CMD_FAILURE;
  98                 }
  99                 user->WriteServ("401 %s %s :No such channel",user->nick, parameters[0]);
 100                 return CMD_FAILURE;
 101         }
 102 };
 103
 104 class ModuleTimedBans : public Module
 105 {
 106         cmd_tban* mycommand;
 107  public:
 108         ModuleTimedBans(InspIRCd* Me)
 109                 : Module(Me)
 110         {
 111
 112                 mycommand = new cmd_tban(ServerInstance);
 113                 ServerInstance->AddCommand(mycommand);
 114                 TimedBanList.clear();
 115         }
 116
 117         virtual ~ModuleTimedBans()
 118         {
 119                 TimedBanList.clear();
 120         }
 121
 122         void Implements(char* List)
 123         {
 124                 List[I_OnDelBan] = List[I_OnBackgroundTimer] = 1;
 125         }
 126
 127         virtual int OnDelBan(userrec* source, chanrec* chan, const std::string &banmask)
 128         {
 129                 irc::string listitem = banmask.c_str();
 130                 irc::string thischan = chan->name;
 131                 for (timedbans::iterator i = TimedBanList.begin(); i < TimedBanList.end(); i++)
 132                 {
 133                         irc::string target = i->mask.c_str();
 134                         irc::string tchan = i->channel.c_str();
 135                         if ((listitem == target) && (tchan == thischan))
 136                         {
 137                                 TimedBanList.erase(i);
 138                                 break;
 139                         }
 140                 }
 141                 return 0;
 142         }
 143
 144         virtual void OnBackgroundTimer(time_t curtime)
 145         {
 146                 bool again = true;
 147                 while (again)
 148                 {
 149                         again = false;
 150                         for (timedbans::iterator i = TimedBanList.begin(); i < TimedBanList.end(); i++)
 151                         {
 152                                 if (curtime > i->expire)
 153                                 {
 154                                         chanrec* cr = ServerInstance->FindChan(i->channel);
 155                                         again = true;
 156                                         if (cr)
 157                                         {
 158                                                 cr->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :Timed ban on %s expired.", cr->name, i->mask.c_str());
 159                                                 const char *setban[3];
 160                                                 setban[0] = i->channel.c_str();
 161                                                 setban[1] = "-b";
 162                                                 setban[2] = i->mask.c_str();
 163                                                 // kludge alert!
 164                                                 // ::SendMode expects a userrec* to send the numeric replies
 165                                                 // back to, so we create it a fake user that isnt in the user
 166                                                 // hash and set its descriptor to FD_MAGIC_NUMBER so the data
 167                                                 // falls into the abyss :p
 168                                                 userrec* temp = new userrec(ServerInstance);
 169                                                 temp->SetFd(FD_MAGIC_NUMBER);
 170                                                 /* FIX: Send mode remotely*/
 171                                                 std::deque<std::string> n;
 172                                                 n.push_back(setban[0]);
 173                                                 n.push_back("-b");
 174                                                 n.push_back(setban[2]);
 175                                                 ServerInstance->SendMode(setban,3,temp);
 176                                                 Event rmode((char *)&n, NULL, "send_mode");
 177                                                 rmode.Send(ServerInstance);
 178                                                 DELETE(temp);
 179                                         }
 180                                         else
 181                                         {
 182                                                 /* Where the hell did our channel go?! */
 183                                                 TimedBanList.erase(i);
 184                                         }
 185                                         // we used to delete the item here, but we dont need to as the servermode above does it for us,
 186                                         break;
 187                                 }
 188                         }
 189                 }
 190         }
 191
 192         virtual Version GetVersion()
 193         {
 194                 return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
 195         }
 196 };
 197
 198 MODULE_INIT(ModuleTimedBans)
 199