src/modules/m_kicknorejoin.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 #include <time.h>
  15 #include <map>
  16 #include <vector>
  17 #include <sstream>
  18 #include "users.h"
  19 #include "channels.h"
  20 #include "modules.h"
  21 #include "inspircd.h"
  22
  23 /* $ModDesc: Provides channel mode +J (delay rejoin after kick) */
  24
  25
  26
  27 inline int strtoint(const std::string &str)
  28 {
  29         std::istringstream ss(str);
  30         int result;
  31         ss >> result;
  32         return result;
  33 }
  34
  35 typedef std::map<userrec*, time_t> delaylist;
  36
  37 /** Handles channel mode +J
  38  */
  39 class KickRejoin : public ModeHandler
  40 {
  41  public:
  42         KickRejoin(InspIRCd* Instance) : ModeHandler(Instance, 'J', 1, 0, false, MODETYPE_CHANNEL, false) { }
  43
  44         ModePair ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string &parameter)
  45         {
  46                 if (channel->IsModeSet('J'))
  47                         return std::make_pair(true, channel->GetModeParameter('J'));
  48                 else
  49                         return std::make_pair(false, parameter);
  50         }
  51
  52         bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
  53         {
  54                 /* When TS is equal, the alphabetically later one wins */
  55                 return (their_param < our_param);
  56         }
  57
  58         ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
  59         {
  60                 if (!adding)
  61                 {
  62                         // Taking the mode off, we need to clean up.
  63                         delaylist* dl;
  64
  65                         if (channel->GetExt("norejoinusers", dl))
  66                         {
  67                                 DELETE(dl);
  68                                 channel->Shrink("norejoinusers");
  69                         }
  70
  71                         if (!channel->IsModeSet('J'))
  72                         {
  73                                 return MODEACTION_DENY;
  74                         }
  75                         else
  76                         {
  77                                 channel->SetMode('J', false);
  78                                 return MODEACTION_ALLOW;
  79                         }
  80                 }
  81                 else if (atoi(parameter.c_str()) > 0)
  82                 {
  83                         if (!channel->IsModeSet('J'))
  84                         {
  85                                 parameter = ConvToStr(atoi(parameter.c_str()));
  86                                 channel->SetModeParam('J', parameter.c_str(), adding);
  87                                 channel->SetMode('J', adding);
  88                                 return MODEACTION_ALLOW;
  89                         }
  90                         else
  91                         {
  92                                 std::string cur_param = channel->GetModeParameter('J');
  93                                 if (cur_param == parameter)
  94                                 {
  95                                         // mode params match, don't change mode
  96                                         return MODEACTION_DENY;
  97                                 }
  98                                 else
  99                                 {
 100                                         // new mode param, replace old with new
 101                                         parameter = ConvToStr(atoi(parameter.c_str()));
 102                                         cur_param = ConvToStr(atoi(cur_param.c_str()));
 103                                         if (parameter != "0")
 104                                         {
 105                                                 channel->SetModeParam('J', cur_param.c_str(), false);
 106                                                 channel->SetModeParam('J', parameter.c_str(), adding);
 107                                                 return MODEACTION_ALLOW;
 108                                         }
 109                                         else
 110                                         {
 111                                                 /* Fix to jamie's fix, dont allow +J 0 on the new value! */
 112                                                 return MODEACTION_DENY;
 113                                         }
 114                                 }
 115                         }
 116                 }
 117                 else
 118                 {
 119                         return MODEACTION_DENY;
 120                 }
 121         }
 122 };
 123
 124 class ModuleKickNoRejoin : public Module
 125 {
 126
 127         KickRejoin* kr;
 128
 129 public:
 130
 131         ModuleKickNoRejoin(InspIRCd* Me)
 132                 : Module(Me)
 133         {
 134
 135                 kr = new KickRejoin(ServerInstance);
 136                 if (!ServerInstance->AddMode(kr, 'J'))
 137                         throw ModuleException("Could not add new modes!");
 138         }
 139
 140         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
 141         {
 142                 if (chan)
 143                 {
 144                         delaylist* dl;
 145                         if (chan->GetExt("norejoinusers", dl))
 146                         {
 147                                 std::vector<userrec*> itemstoremove;
 148
 149                                 for (delaylist::iterator iter = dl->begin(); iter != dl->end(); iter++)
 150                                 {
 151                                         if (iter->second > time(NULL))
 152                                         {
 153                                                 if (iter->first == user)
 154                                                 {
 155                                                         user->WriteServ( "495 %s %s :You cannot rejoin this channel yet after being kicked (+J)", user->nick, chan->name);
 156                                                         return 1;
 157                                                 }
 158                                         }
 159                                         else
 160                                         {
 161                                                 // Expired record, remove.
 162                                                 itemstoremove.push_back(iter->first);
 163                                         }
 164                                 }
 165
 166                                 for (unsigned int i = 0; i < itemstoremove.size(); i++)
 167                                         dl->erase(itemstoremove[i]);
 168
 169                                 if (!dl->size())
 170                                 {
 171                                         // Now it's empty..
 172                                         DELETE(dl);
 173                                         chan->Shrink("norejoinusers");
 174                                 }
 175                         }
 176                 }
 177                 return 0;
 178         }
 179
 180         virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason, bool &silent)
 181         {
 182                 if (chan->IsModeSet('J') && (source != user))
 183                 {
 184                         delaylist* dl;
 185                         if (!chan->GetExt("norejoinusers", dl))
 186                         {
 187                                 dl = new delaylist;
 188                                 chan->Extend("norejoinusers", dl);
 189                         }
 190                         (*dl)[user] = time(NULL) + strtoint(chan->GetModeParameter('J'));
 191                 }
 192         }
 193
 194         virtual void OnChannelDelete(chanrec* chan)
 195         {
 196                 delaylist* dl;
 197
 198                 if (chan->GetExt("norejoinusers", dl))
 199                 {
 200                         DELETE(dl);
 201                         chan->Shrink("norejoinusers");
 202                 }
 203         }
 204
 205         virtual void OnCleanup(int target_type, void* item)
 206         {
 207                 if(target_type == TYPE_CHANNEL)
 208                         OnChannelDelete((chanrec*)item);
 209         }
 210
 211         virtual void Implements(char* List)
 212         {
 213                 List[I_OnCleanup] = List[I_OnChannelDelete] = List[I_OnUserPreJoin] = List[I_OnUserKick] = 1;
 214         }
 215
 216         virtual ~ModuleKickNoRejoin()
 217         {
 218                 ServerInstance->Modes->DelMode(kr);
 219                 DELETE(kr);
 220         }
 221
 222         virtual Version GetVersion()
 223         {
 224                 return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
 225         }
 226 };
 227
 228
 229 class ModuleKickNoRejoinFactory : public ModuleFactory
 230 {
 231  public:
 232         ModuleKickNoRejoinFactory()
 233         {
 234         }
 235
 236         ~ModuleKickNoRejoinFactory()
 237         {
 238         }
 239
 240         virtual Module * CreateModule(InspIRCd* Me)
 241         {
 242                 return new ModuleKickNoRejoin(Me);
 243         }
 244
 245 };
 246
 247
 248 extern "C" DllExport void * init_module( void )
 249 {
 250         return new ModuleKickNoRejoinFactory;
 251 }
 252