src/modules/m_timedbans.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 /* $ModDesc: Adds timed bans */
  20
  21 #include <stdio.h>
  22 #include <vector>
  23 #include "users.h"
  24 #include "channels.h"
  25 #include "modules.h"
  26 #include "helperfuncs.h"
  27 #include "hashcomp.h"
  28 #include "configreader.h"
  29 #include "inspircd.h"
  30
  31
  32 extern InspIRCd* ServerInstance;
  33
  34 class TimedBan : public classbase
  35 {
  36  public:
  37         std::string channel;
  38         std::string mask;
  39         time_t expire;
  40 };
  41
  42 typedef std::vector<TimedBan> timedbans;
  43 timedbans TimedBanList;
  44
  45 class cmd_tban : public command_t
  46 {
  47  public:
  48         cmd_tban () : command_t("TBAN", 0, 3)
  49         {
  50                 this->source = "m_timedbans.so";
  51                 syntax = "<channel> <duration> <banmask>";
  52         }
  53
  54         void Handle (const char** parameters, int pcnt, userrec *user)
  55         {
  56                 chanrec* channel = ServerInstance->FindChan(parameters[0]);
  57                 if (channel)
  58                 {
  59                         int cm = channel->GetStatus(user);
  60                         if ((cm == STATUS_HOP) || (cm == STATUS_OP))
  61                         {
  62                                 if (!ServerInstance->IsValidMask(parameters[2]))
  63                                 {
  64                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban mask");
  65                                         return;
  66                                 }
  67                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  68                                 {
  69                                         if (!strcasecmp(i->data,parameters[2]))
  70                                         {
  71                                                 user->WriteServ("NOTICE "+std::string(user->nick)+" :The ban "+std::string(parameters[2])+" is already on the banlist of "+std::string(parameters[0]));
  72                                                 return;
  73                                         }
  74                                 }
  75                                 TimedBan T;
  76                                 std::string channelname = parameters[0];
  77                                 unsigned long expire = ServerInstance->CalcDuration(parameters[1]) + time(NULL);
  78                                 if (ServerInstance->CalcDuration(parameters[1]) < 1)
  79                                 {
  80                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Invalid ban time");
  81                                         return;
  82                                 }
  83                                 char duration[MAXBUF];
  84                                 snprintf(duration,MAXBUF,"%lu",ServerInstance->CalcDuration(parameters[1]));
  85                                 std::string mask = parameters[2];
  86                                 const char *setban[32];
  87                                 setban[0] = parameters[0];
  88                                 setban[1] = "+b";
  89                                 setban[2] = parameters[2];
  90                                 // use CallCommandHandler to make it so that the user sets the mode
  91                                 // themselves
  92                                 ServerInstance->CallCommandHandler("MODE",setban,3,user);
  93                                 /* Check if the ban was actually added (e.g. banlist was NOT full) */
  94                                 bool was_added = false;
  95                                 for (BanList::iterator i = channel->bans.begin(); i != channel->bans.end(); i++)
  96                                         if (!strcasecmp(i->data,mask.c_str()))
  97                                                 was_added = true;
  98                                 if (was_added)
  99                                 {
 100                                         T.channel = channelname;
 101                                         T.mask = mask;
 102                                         T.expire = expire;
 103                                         TimedBanList.push_back(T);
 104                                         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);
 105                                 }
 106                                 return;
 107                         }
 108                         else user->WriteServ("482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, channel->name);
 109                         return;
 110                 }
 111                 user->WriteServ("401 %s %s :No such channel",user->nick, parameters[0]);
 112         }
 113 };
 114
 115 class ModuleTimedBans : public Module
 116 {
 117         cmd_tban* mycommand;
 118  public:
 119         ModuleTimedBans(InspIRCd* Me)
 120                 : Module::Module(Me)
 121         {
 122
 123                 mycommand = new cmd_tban();
 124                 ServerInstance->AddCommand(mycommand);
 125                 TimedBanList.clear();
 126         }
 127
 128         virtual ~ModuleTimedBans()
 129         {
 130                 TimedBanList.clear();
 131         }
 132
 133         void Implements(char* List)
 134         {
 135                 List[I_OnDelBan] = List[I_OnBackgroundTimer] = 1;
 136         }
 137
 138         virtual int OnDelBan(userrec* source, chanrec* chan, const std::string &banmask)
 139         {
 140                 for (timedbans::iterator i = TimedBanList.begin(); i < TimedBanList.end(); i++)
 141                 {
 142                         irc::string listitem = banmask.c_str();
 143                         irc::string target = i->mask.c_str();
 144                         if (listitem == target)
 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->fd = FD_MAGIC_NUMBER;
 179                                                 temp->server = "";
 180                                                 ServerInstance->SendMode(setban,3,temp);
 181                                                 /* FIX: Send mode remotely*/
 182                                                 std::deque<std::string> n;
 183                                                 n.push_back(i->channel);
 184                                                 n.push_back("-b");
 185                                                 n.push_back(i->mask);
 186                                                 Event rmode((char *)&n, NULL, "send_mode");
 187                                                 rmode.Send();
 188                                                 DELETE(temp);
 189                                         }
 190                                         else
 191                                         {
 192                                                 /* Where the hell did our channel go?! */
 193                                                 TimedBanList.erase(i);
 194                                         }
 195                                         // we used to delete the item here, but we dont need to as the servermode above does it for us,
 196                                         break;
 197                                 }
 198                         }
 199                 }
 200         }
 201
 202         virtual Version GetVersion()
 203         {
 204                 return Version(1,0,0,0,VF_VENDOR);
 205         }
 206 };
 207
 208
 209 class ModuleTimedBansFactory : public ModuleFactory
 210 {
 211  public:
 212         ModuleTimedBansFactory()
 213         {
 214         }
 215
 216         ~ModuleTimedBansFactory()
 217         {
 218         }
 219
 220         virtual Module * CreateModule(InspIRCd* Me)
 221         {
 222                 return new ModuleTimedBans(Me);
 223         }
 224
 225 };
 226
 227
 228 extern "C" void * init_module( void )
 229 {
 230         return new ModuleTimedBansFactory;
 231 }