src/modules/m_kicknorejoin.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 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 #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->SetMode('J', false);
  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.c_str(), adding);
  78                                 channel->SetMode('J', adding);
  79                                 return MODEACTION_ALLOW;
  80                         }
  81                         else
  82                         {
  83                                 std::string cur_param = channel->GetModeParameter('J');
  84                                 if (cur_param == parameter)
  85                                 {
  86                                         // mode params match, don't change mode
  87                                         return MODEACTION_DENY;
  88                                 }
  89                                 else
  90                                 {
  91                                         // new mode param, replace old with new
  92                                         parameter = ConvToStr(atoi(parameter.c_str()));
  93                                         cur_param = ConvToStr(atoi(cur_param.c_str()));
  94                                         if (parameter != "0")
  95                                         {
  96                                                 channel->SetModeParam('J', cur_param.c_str(), false);
  97                                                 channel->SetModeParam('J', parameter.c_str(), adding);
  98                                                 return MODEACTION_ALLOW;
  99                                         }
 100                                         else
 101                                         {
 102                                                 /* Fix to jamie's fix, dont allow +J 0 on the new value! */
 103                                                 return MODEACTION_DENY;
 104                                         }
 105                                 }
 106                         }
 107                 }
 108                 else
 109                 {
 110                         return MODEACTION_DENY;
 111                 }
 112         }
 113 };
 114
 115 class ModuleKickNoRejoin : public Module
 116 {
 117
 118         KickRejoin* kr;
 119
 120 public:
 121
 122         ModuleKickNoRejoin(InspIRCd* Me)
 123                 : Module(Me)
 124         {
 125
 126                 kr = new KickRejoin(ServerInstance);
 127                 if (!ServerInstance->Modes->AddMode(kr))
 128                         throw ModuleException("Could not add new modes!");
 129                 Implementation eventlist[] = { I_OnCleanup, I_OnChannelDelete, I_OnUserPreJoin, I_OnUserKick };
 130                 ServerInstance->Modules->Attach(eventlist, this, 4);
 131         }
 132
 133         virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs)
 134         {
 135                 if (chan)
 136                 {
 137                         delaylist* dl;
 138                         if (chan->GetExt("norejoinusers", dl))
 139                         {
 140                                 std::vector<User*> itemstoremove;
 141
 142                                 for (delaylist::iterator iter = dl->begin(); iter != dl->end(); iter++)
 143                                 {
 144                                         if (iter->second > time(NULL))
 145                                         {
 146                                                 if (iter->first == user)
 147                                                 {
 148                                                         user->WriteServ( "495 %s %s :You cannot rejoin this channel yet after being kicked (+J)", user->nick, chan->name);
 149                                                         return 1;
 150                                                 }
 151                                         }
 152                                         else
 153                                         {
 154                                                 // Expired record, remove.
 155                                                 itemstoremove.push_back(iter->first);
 156                                         }
 157                                 }
 158
 159                                 for (unsigned int i = 0; i < itemstoremove.size(); i++)
 160                                         dl->erase(itemstoremove[i]);
 161
 162                                 if (!dl->size())
 163                                 {
 164                                         // Now it's empty..
 165                                         delete dl;
 166                                         chan->Shrink("norejoinusers");
 167                                 }
 168                         }
 169                 }
 170                 return 0;
 171         }
 172
 173         virtual void OnUserKick(User* source, User* user, Channel* chan, const std::string &reason, bool &silent)
 174         {
 175                 if (chan->IsModeSet('J') && (source != user))
 176                 {
 177                         delaylist* dl;
 178                         if (!chan->GetExt("norejoinusers", dl))
 179                         {
 180                                 dl = new delaylist;
 181                                 chan->Extend("norejoinusers", dl);
 182                         }
 183                         (*dl)[user] = time(NULL) + strtoint(chan->GetModeParameter('J'));
 184                 }
 185         }
 186
 187         virtual void OnChannelDelete(Channel* chan)
 188         {
 189                 delaylist* dl;
 190
 191                 if (chan->GetExt("norejoinusers", dl))
 192                 {
 193                         delete dl;
 194                         chan->Shrink("norejoinusers");
 195                 }
 196         }
 197
 198         virtual void OnCleanup(int target_type, void* item)
 199         {
 200                 if(target_type == TYPE_CHANNEL)
 201                         OnChannelDelete((Channel*)item);
 202         }
 203
 204
 205         virtual ~ModuleKickNoRejoin()
 206         {
 207                 ServerInstance->Modes->DelMode(kr);
 208                 delete kr;
 209         }
 210
 211         virtual Version GetVersion()
 212         {
 213                 return Version(1, 2, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
 214         }
 215 };
 216
 217
 218 MODULE_INIT(ModuleKickNoRejoin)