src/modules/m_kicknorejoin.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 #include "inspircd.h"
  15
  16 /* $ModDesc: Provides channel mode +J (delay rejoin after kick) */
  17
  18 inline int strtoint(const std::string &str)
  19 {
  20         std::istringstream ss(str);
  21         int result;
  22         ss >> result;
  23         return result;
  24 }
  25
  26 typedef std::map<User*, time_t> delaylist;
  27
  28 /** Handles channel mode +J
  29  */
  30 class KickRejoin : public ModeHandler
  31 {
  32  public:
  33         KickRejoin(InspIRCd* Instance) : ModeHandler(Instance, 'J', 1, 0, false, MODETYPE_CHANNEL, false) { }
  34
  35         ModePair ModeSet(User* source, User* dest, Channel* channel, const std::string &parameter)
  36         {
  37                 if (channel->IsModeSet('J'))
  38                         return std::make_pair(true, channel->GetModeParameter('J'));
  39                 else
  40                         return std::make_pair(false, parameter);
  41         }
  42
  43         bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, Channel* channel)
  44         {
  45                 /* When TS is equal, the alphabetically later one wins */
  46                 return (their_param < our_param);
  47         }
  48
  49         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding, bool)
  50         {
  51                 if (!adding)
  52                 {
  53                         // Taking the mode off, we need to clean up.
  54                         delaylist* dl;
  55
  56                         if (channel->GetExt("norejoinusers", dl))
  57                         {
  58                                 delete dl;
  59                                 channel->Shrink("norejoinusers");
  60                         }
  61
  62                         if (!channel->IsModeSet('J'))
  63                         {
  64                                 return MODEACTION_DENY;
  65                         }
  66                         else
  67                         {
  68                                 channel->SetModeParam('J', "");
  69                                 return MODEACTION_ALLOW;
  70                         }
  71                 }
  72                 else if (atoi(parameter.c_str()) > 0)
  73                 {
  74                         if (!channel->IsModeSet('J'))
  75                         {
  76                                 parameter = ConvToStr(atoi(parameter.c_str()));
  77                                 channel->SetModeParam('J', parameter);
  78                                 return MODEACTION_ALLOW;
  79                         }
  80                         else
  81                         {
  82                                 std::string cur_param = channel->GetModeParameter('J');
  83                                 if (cur_param == parameter)
  84                                 {
  85                                         // mode params match, don't change mode
  86                                         return MODEACTION_DENY;
  87                                 }
  88                                 else
  89                                 {
  90                                         // new mode param, replace old with new
  91                                         parameter = ConvToStr(atoi(parameter.c_str()));
  92                                         if (parameter != "0")
  93                                         {
  94                                                 channel->SetModeParam('J', parameter);
  95                                                 return MODEACTION_ALLOW;
  96                                         }
  97                                         else
  98                                         {
  99                                                 /* Fix to jamie's fix, dont allow +J 0 on the new value! */
 100                                                 return MODEACTION_DENY;
 101                                         }
 102                                 }
 103                         }
 104                 }
 105                 else
 106                 {
 107                         return MODEACTION_DENY;
 108                 }
 109         }
 110 };
 111
 112 class ModuleKickNoRejoin : public Module
 113 {
 114
 115         KickRejoin kr;
 116
 117 public:
 118
 119         ModuleKickNoRejoin(InspIRCd* Me)
 120                 : Module(Me), kr(Me)
 121         {
 122                 if (!ServerInstance->Modes->AddMode(&kr))
 123                         throw ModuleException("Could not add new modes!");
 124                 Implementation eventlist[] = { I_OnCleanup, I_OnChannelDelete, I_OnUserPreJoin, I_OnUserKick };
 125                 ServerInstance->Modules->Attach(eventlist, this, 4);
 126         }
 127
 128         virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
 129         {
 130                 if (chan)
 131                 {
 132                         delaylist* dl;
 133                         if (chan->GetExt("norejoinusers", dl))
 134                         {
 135                                 std::vector<User*> itemstoremove;
 136
 137                                 for (delaylist::iterator iter = dl->begin(); iter != dl->end(); iter++)
 138                                 {
 139                                         if (iter->second > ServerInstance->Time())
 140                                         {
 141                                                 if (iter->first == user)
 142                                                 {
 143                                                         user->WriteNumeric(ERR_DELAYREJOIN, "%s %s :You must wait %s seconds after being kicked to rejoin (+J)", user->nick.c_str(), chan->name.c_str(), chan->GetModeParameter('J').c_str());
 144                                                         return 1;
 145                                                 }
 146                                         }
 147                                         else
 148                                         {
 149                                                 // Expired record, remove.
 150                                                 itemstoremove.push_back(iter->first);
 151                                         }
 152                                 }
 153
 154                                 for (unsigned int i = 0; i < itemstoremove.size(); i++)
 155                                         dl->erase(itemstoremove[i]);
 156
 157                                 if (!dl->size())
 158                                 {
 159                                         // Now it's empty..
 160                                         delete dl;
 161                                         chan->Shrink("norejoinusers");
 162                                 }
 163                         }
 164                 }
 165                 return 0;
 166         }
 167
 168         virtual void OnUserKick(User* source, User* user, Channel* chan, const std::string &reason, bool &silent)
 169         {
 170                 if (chan->IsModeSet('J') && (source != user))
 171                 {
 172                         delaylist* dl;
 173                         if (!chan->GetExt("norejoinusers", dl))
 174                         {
 175                                 dl = new delaylist;
 176                                 chan->Extend("norejoinusers", dl);
 177                         }
 178                         (*dl)[user] = ServerInstance->Time() + strtoint(chan->GetModeParameter('J'));
 179                 }
 180         }
 181
 182         virtual void OnChannelDelete(Channel* chan)
 183         {
 184                 delaylist* dl;
 185
 186                 if (chan->GetExt("norejoinusers", dl))
 187                 {
 188                         delete dl;
 189                         chan->Shrink("norejoinusers");
 190                 }
 191         }
 192
 193         virtual void OnCleanup(int target_type, void* item)
 194         {
 195                 if(target_type == TYPE_CHANNEL)
 196                         OnChannelDelete((Channel*)item);
 197         }
 198
 199
 200         virtual ~ModuleKickNoRejoin()
 201         {
 202                 ServerInstance->Modes->DelMode(&kr);
 203         }
 204
 205         virtual Version GetVersion()
 206         {
 207                 return Version("$Id$", VF_COMMON | VF_VENDOR, API_VERSION);
 208         }
 209 };
 210
 211
 212 MODULE_INIT(ModuleKickNoRejoin)