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 <stdio.h>
  17 #include <vector>
  18 #include "users.h"
  19 #include "channels.h"
  20 #include "modules.h"
  21 #include "hashcomp.h"
  22 #include "configreader.h"
  23 #include "inspircd.h"
  24
  25
  26 /** Holds a timed ban
  27  */
  28 class TimedBan : public classbase
  29 {
  30  public:
  31         std::string channel;
  32         std::string mask;
  33         time_t expire;
  34 };
  35
  36 typedef std::vector<TimedBan> timedbans;
  37 timedbans TimedBanList;
  38
  39 /** Handle /TBAN
  40  */
  41 class cmd_tban : public command_t
  42 {
  43  public:
  44  cmd_tban (InspIRCd* Instance) : command_t(Instance,"TBAN", 0, 3)
  45         {
  46                 this->source = "m_timedbans.so";
  47                 syntax = "<channel> <duration> <banmask>";
  48         }
  49
  50         CmdResult Handle (const char** parameters, int pcnt, userrec *user)
  51         {
  52                 chanrec* channel = ServerInstance->FindChan(parameters[0]);
  53                 if (channel)
  54                 {
  55                         int cm = channel->GetStatus(user);
  56                         if ((cm == STATUS_HOP) || (cm == STATUS_OP))
  57                         {
  58                                 if (!ServerInstance->IsValidMask(parameters[2]))
  59                                 {
  60                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban mask");
  61                                         return CMD_FAILURE;
  62                                 }
  63                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  64                                 {
  65                                         if (!strcasecmp(i->data,parameters[2]))
  66                                         {
  67                                                 user->WriteServ("NOTICE "+std::string(user->nick)+" :The ban "+std::string(parameters[2])+" is already on the banlist of "+std::string(parameters[0]));
  68                                                 return CMD_FAILURE;
  69                                         }
  70                                 }
  71                                 TimedBan T;
  72                                 std::string channelname = parameters[0];
  73                                 unsigned long expire = ServerInstance->Duration(parameters[1]) + time(NULL);
  74                                 if (ServerInstance->Duration(parameters[1]) < 1)
  75                                 {
  76                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban time");
  77                                         return CMD_FAILURE;
  78                                 }
  79                                 char duration[MAXBUF];
  80                                 snprintf(duration,MAXBUF,"%lu",ServerInstance->Duration(parameters[1]));
  81                                 std::string mask = parameters[2];
  82                                 const char *setban[32];
  83                                 setban[0] = parameters[0];
  84                                 setban[1] = "+b";
  85                                 setban[2] = parameters[2];
  86                                 // use CallCommandHandler to make it so that the user sets the mode
  87                                 // themselves
  88                                 ServerInstance->CallCommandHandler("MODE",setban,3,user);
  89                                 /* Check if the ban was actually added (e.g. banlist was NOT full) */
  90                                 bool was_added = false;
  91                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  92                                         if (!strcasecmp(i->data,mask.c_str()))
  93                                                 was_added = true;
  94                                 if (was_added)
  95                                 {
  96                                         T.channel = channelname;
  97                                         T.mask = mask;
  98                                         T.expire = expire;
  99                                         TimedBanList.push_back(T);
 100                                         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);
 101                                         return CMD_SUCCESS;
 102                                 }
 103                                 return CMD_FAILURE;
 104                         }
 105                         else user->WriteServ("482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, channel->name);
 106                         return CMD_FAILURE;
 107                 }
 108                 user->WriteServ("401 %s %s :No such channel",user->nick, parameters[0]);
 109                 return CMD_FAILURE;
 110         }
 111 };
 112
 113 class ModuleTimedBans : public Module
 114 {
 115         cmd_tban* mycommand;
 116  public:
 117         ModuleTimedBans(InspIRCd* Me)
 118                 : Module(Me)
 119         {
 120
 121                 mycommand = new cmd_tban(ServerInstance);
 122                 ServerInstance->AddCommand(mycommand);
 123                 TimedBanList.clear();
 124         }
 125
 126         virtual ~ModuleTimedBans()
 127         {
 128                 TimedBanList.clear();
 129         }
 130
 131         void Implements(char* List)
 132         {
 133                 List[I_OnDelBan] = List[I_OnBackgroundTimer] = 1;
 134         }
 135
 136         virtual int OnDelBan(userrec* source, chanrec* chan, const std::string &banmask)
 137         {
 138                 irc::string listitem = banmask.c_str();
 139                 irc::string thischan = chan->name;
 140                 for (timedbans::iterator i = TimedBanList.begin(); i < TimedBanList.end(); i++)
 141                 {
 142                         irc::string target = i->mask.c_str();
 143                         irc::string tchan = i->channel.c_str();
 144                         if ((listitem == target) && (tchan == thischan))
 145                         {
 146                                 TimedBanList.erase(i);
 147                                 break;
 148                         }
 149                 }
 150                 return 0;
 151         }
 152
 153         virtual void OnBackgroundTimer(time_t curtime)
 154         {
 155                 bool again = true;
 156                 while (again)
 157                 {
 158                         again = false;
 159                         for (timedbans::iterator i = TimedBanList.begin(); i < TimedBanList.end(); i++)
 160                         {
 161                                 if (curtime > i->expire)
 162                                 {
 163                                         chanrec* cr = ServerInstance->FindChan(i->channel);
 164                                         again = true;
 165                                         if (cr)
 166                                         {
 167                                                 cr->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :Timed ban on %s expired.", cr->name, i->mask.c_str());
 168                                                 const char *setban[3];
 169                                                 setban[0] = i->channel.c_str();
 170                                                 setban[1] = "-b";
 171                                                 setban[2] = i->mask.c_str();
 172                                                 // kludge alert!
 173                                                 // ::SendMode expects a userrec* to send the numeric replies
 174                                                 // back to, so we create it a fake user that isnt in the user
 175                                                 // hash and set its descriptor to FD_MAGIC_NUMBER so the data
 176                                                 // falls into the abyss :p
 177                                                 userrec* temp = new userrec(ServerInstance);
 178                                                 temp->SetFd(FD_MAGIC_NUMBER);
 179                                                 /* FIX: Send mode remotely*/
 180                                                 std::deque<std::string> n;
 181                                                 n.push_back(setban[0]);
 182                                                 n.push_back("-b");
 183                                                 n.push_back(setban[2]);
 184                                                 ServerInstance->SendMode(setban,3,temp);
 185                                                 Event rmode((char *)&n, NULL, "send_mode");
 186                                                 rmode.Send(ServerInstance);
 187                                                 DELETE(temp);
 188                                         }
 189                                         else
 190                                         {
 191                                                 /* Where the hell did our channel go?! */
 192                                                 TimedBanList.erase(i);
 193                                         }
 194                                         // we used to delete the item here, but we dont need to as the servermode above does it for us,
 195                                         break;
 196                                 }
 197                         }
 198                 }
 199         }
 200
 201         virtual Version GetVersion()
 202         {
 203                 return Version(1,1,0,0,VF_VENDOR,API_VERSION);
 204         }
 205 };
 206
 207
 208 class ModuleTimedBansFactory : public ModuleFactory
 209 {
 210  public:
 211         ModuleTimedBansFactory()
 212         {
 213         }
 214
 215         ~ModuleTimedBansFactory()
 216         {
 217         }
 218
 219         virtual Module * CreateModule(InspIRCd* Me)
 220         {
 221                 return new ModuleTimedBans(Me);
 222         }
 223
 224 };
 225
 226
 227 extern "C" DllExport void * init_module( void )
 228 {
 229         return new ModuleTimedBansFactory;
 230 }