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 #include "users.h"
  18 #include "channels.h"
  19 #include "modules.h"
  20 #include "hashcomp.h"
  21 #include "configreader.h"
  22
  23 /** Holds a timed ban
  24  */
  25 class TimedBan : public classbase
  26 {
  27  public:
  28         std::string channel;
  29         std::string mask;
  30         time_t expire;
  31 };
  32
  33 typedef std::vector<TimedBan> timedbans;
  34 timedbans TimedBanList;
  35
  36 /** Handle /TBAN
  37  */
  38 class cmd_tban : public command_t
  39 {
  40  public:
  41  cmd_tban (InspIRCd* Instance) : command_t(Instance,"TBAN", 0, 3)
  42         {
  43                 this->source = "m_timedbans.so";
  44                 syntax = "<channel> <duration> <banmask>";
  45         }
  46
  47         CmdResult Handle (const char** parameters, int pcnt, userrec *user)
  48         {
  49                 chanrec* channel = ServerInstance->FindChan(parameters[0]);
  50                 if (channel)
  51                 {
  52                         int cm = channel->GetStatus(user);
  53                         if ((cm == STATUS_HOP) || (cm == STATUS_OP))
  54                         {
  55                                 if (!ServerInstance->IsValidMask(parameters[2]))
  56                                 {
  57                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban mask");
  58                                         return CMD_FAILURE;
  59                                 }
  60                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  61                                 {
  62                                         if (!strcasecmp(i->data,parameters[2]))
  63                                         {
  64                                                 user->WriteServ("NOTICE "+std::string(user->nick)+" :The ban "+std::string(parameters[2])+" is already on the banlist of "+std::string(parameters[0]));
  65                                                 return CMD_FAILURE;
  66                                         }
  67                                 }
  68                                 TimedBan T;
  69                                 std::string channelname = parameters[0];
  70                                 unsigned long expire = ServerInstance->Duration(parameters[1]) + time(NULL);
  71                                 if (ServerInstance->Duration(parameters[1]) < 1)
  72                                 {
  73                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban time");
  74                                         return CMD_FAILURE;
  75                                 }
  76                                 char duration[MAXBUF];
  77                                 snprintf(duration,MAXBUF,"%lu",ServerInstance->Duration(parameters[1]));
  78                                 std::string mask = parameters[2];
  79                                 const char *setban[32];
  80                                 setban[0] = parameters[0];
  81                                 setban[1] = "+b";
  82                                 setban[2] = parameters[2];
  83                                 // use CallCommandHandler to make it so that the user sets the mode
  84                                 // themselves
  85                                 ServerInstance->CallCommandHandler("MODE",setban,3,user);
  86                                 /* Check if the ban was actually added (e.g. banlist was NOT full) */
  87                                 bool was_added = false;
  88                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  89                                         if (!strcasecmp(i->data,mask.c_str()))
  90                                                 was_added = true;
  91                                 if (was_added)
  92                                 {
  93                                         T.channel = channelname;
  94                                         T.mask = mask;
  95                                         T.expire = expire;
  96                                         TimedBanList.push_back(T);
  97                                         channel->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s added a timed ban on %s lasting for %s seconds.", channel->name, user->nick, mask.c_str(), duration);
  98                                         return CMD_SUCCESS;
  99                                 }
 100                                 return CMD_FAILURE;
 101                         }
 102                         else user->WriteServ("482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, channel->name);
 103                         return CMD_FAILURE;
 104                 }
 105                 user->WriteServ("401 %s %s :No such channel",user->nick, parameters[0]);
 106                 return CMD_FAILURE;
 107         }
 108 };
 109
 110 class ModuleTimedBans : public Module
 111 {
 112         cmd_tban* mycommand;
 113  public:
 114         ModuleTimedBans(InspIRCd* Me)
 115                 : Module(Me)
 116         {
 117
 118                 mycommand = new cmd_tban(ServerInstance);
 119                 ServerInstance->AddCommand(mycommand);
 120                 TimedBanList.clear();
 121         }
 122
 123         virtual ~ModuleTimedBans()
 124         {
 125                 TimedBanList.clear();
 126         }
 127
 128         void Implements(char* List)
 129         {
 130                 List[I_OnDelBan] = List[I_OnBackgroundTimer] = 1;
 131         }
 132
 133         virtual int OnDelBan(userrec* source, chanrec* chan, const std::string &banmask)
 134         {
 135                 irc::string listitem = banmask.c_str();
 136                 irc::string thischan = chan->name;
 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                 bool again = true;
 153                 while (again)
 154                 {
 155                         again = false;
 156                         for (timedbans::iterator i = TimedBanList.begin(); i < TimedBanList.end(); i++)
 157                         {
 158                                 if (curtime > i->expire)
 159                                 {
 160                                         chanrec* cr = ServerInstance->FindChan(i->channel);
 161                                         again = true;
 162                                         if (cr)
 163                                         {
 164                                                 cr->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :Timed ban on %s expired.", cr->name, i->mask.c_str());
 165                                                 const char *setban[3];
 166                                                 setban[0] = i->channel.c_str();
 167                                                 setban[1] = "-b";
 168                                                 setban[2] = i->mask.c_str();
 169                                                 // kludge alert!
 170                                                 // ::SendMode expects a userrec* to send the numeric replies
 171                                                 // back to, so we create it a fake user that isnt in the user
 172                                                 // hash and set its descriptor to FD_MAGIC_NUMBER so the data
 173                                                 // falls into the abyss :p
 174                                                 userrec* temp = new userrec(ServerInstance);
 175                                                 temp->SetFd(FD_MAGIC_NUMBER);
 176                                                 /* FIX: Send mode remotely*/
 177                                                 std::deque<std::string> n;
 178                                                 n.push_back(setban[0]);
 179                                                 n.push_back("-b");
 180                                                 n.push_back(setban[2]);
 181                                                 ServerInstance->SendMode(setban,3,temp);
 182                                                 Event rmode((char *)&n, NULL, "send_mode");
 183                                                 rmode.Send(ServerInstance);
 184                                                 DELETE(temp);
 185                                         }
 186                                         else
 187                                         {
 188                                                 /* Where the hell did our channel go?! */
 189                                                 TimedBanList.erase(i);
 190                                         }
 191                                         // we used to delete the item here, but we dont need to as the servermode above does it for us,
 192                                         break;
 193                                 }
 194                         }
 195                 }
 196         }
 197
 198         virtual Version GetVersion()
 199         {
 200                 return Version(1,1,0,0,VF_VENDOR,API_VERSION);
 201         }
 202 };
 203
 204
 205 class ModuleTimedBansFactory : public ModuleFactory
 206 {
 207  public:
 208         ModuleTimedBansFactory()
 209         {
 210         }
 211
 212         ~ModuleTimedBansFactory()
 213         {
 214         }
 215
 216         virtual Module * CreateModule(InspIRCd* Me)
 217         {
 218                 return new ModuleTimedBans(Me);
 219         }
 220
 221 };
 222
 223
 224 extern "C" DllExport void * init_module( void )
 225 {
 226         return new ModuleTimedBansFactory;
 227 }