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                         ServerInstance->Log(DEBUG,"Got parameter: '%s'",parameter.c_str());
  84
  85                         if (!channel->IsModeSet('J'))
  86                         {
  87                                 parameter = ConvToStr(atoi(parameter.c_str()));
  88                                 channel->SetModeParam('J', parameter.c_str(), adding);
  89                                 channel->SetMode('J', adding);
  90                                 return MODEACTION_ALLOW;
  91                         }
  92                         else
  93                         {
  94                                 std::string cur_param = channel->GetModeParameter('J');
  95                                 if (cur_param == parameter)
  96                                 {
  97                                         // mode params match, don't change mode
  98                                         return MODEACTION_DENY;
  99                                 }
 100                                 else
 101                                 {
 102                                         // new mode param, replace old with new
 103                                         parameter = ConvToStr(atoi(parameter.c_str()));
 104                                         cur_param = ConvToStr(atoi(cur_param.c_str()));
 105                                         if (parameter != "0")
 106                                         {
 107                                                 channel->SetModeParam('J', cur_param.c_str(), false);
 108                                                 channel->SetModeParam('J', parameter.c_str(), adding);
 109                                                 return MODEACTION_ALLOW;
 110                                         }
 111                                         else
 112                                         {
 113                                                 /* Fix to jamie's fix, dont allow +J 0 on the new value! */
 114                                                 return MODEACTION_DENY;
 115                                         }
 116                                 }
 117                         }
 118                 }
 119                 else
 120                 {
 121                         return MODEACTION_DENY;
 122                 }
 123         }
 124 };
 125
 126 class ModuleKickNoRejoin : public Module
 127 {
 128
 129         KickRejoin* kr;
 130
 131 public:
 132
 133         ModuleKickNoRejoin(InspIRCd* Me)
 134                 : Module::Module(Me)
 135         {
 136
 137                 kr = new KickRejoin(ServerInstance);
 138                 ServerInstance->AddMode(kr, 'J');
 139         }
 140
 141         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
 142         {
 143                 if (chan)
 144                 {
 145                         delaylist* dl;
 146                         if (chan->GetExt("norejoinusers", dl))
 147                         {
 148                                 ServerInstance->Log(DEBUG, "m_kicknorejoin.so: got delay list, iterating over it");
 149                                 std::vector<userrec*> itemstoremove;
 150
 151                                 for (delaylist::iterator iter = dl->begin(); iter != dl->end(); iter++)
 152                                 {
 153                                         ServerInstance->Log(DEBUG, "m_kicknorejoin.so:\t[%s] => %d", iter->first->nick, iter->second);
 154                                         if (iter->second > time(NULL))
 155                                         {
 156                                                 ServerInstance->Log(DEBUG, "m_kicknorejoin.so: still inside time slot");
 157                                                 if (iter->first == user)
 158                                                 {
 159                                                         ServerInstance->Log(DEBUG, "m_kicknorejoin.so: and we have the right user");
 160                                                         user->WriteServ( "495 %s %s :You cannot rejoin this channel yet after being kicked (+J)", user->nick, chan->name);
 161                                                         return 1;
 162                                                 }
 163                                         }
 164                                         else
 165                                         {
 166                                                 // Expired record, remove.
 167                                                 ServerInstance->Log(DEBUG, "m_kicknorejoin.so: record expired");
 168                                                 itemstoremove.push_back(iter->first);
 169                                         }
 170                                 }
 171
 172                                 for (unsigned int i = 0; i < itemstoremove.size(); i++)
 173                                         dl->erase(itemstoremove[i]);
 174
 175                                 if (!dl->size())
 176                                 {
 177                                         // Now it's empty..
 178                                         DELETE(dl);
 179                                         chan->Shrink("norejoinusers");
 180                                 }
 181                         }
 182                 }
 183                 return 0;
 184         }
 185
 186         virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
 187         {
 188                 if (chan->IsModeSet('J') && (source != user))
 189                 {
 190                         delaylist* dl;
 191                         if (!chan->GetExt("norejoinusers", dl))
 192                         {
 193                                 dl = new delaylist;
 194                                 chan->Extend("norejoinusers", dl);
 195                         }
 196
 197                         ServerInstance->Log(DEBUG, "m_kicknorejoin.so: setting record for %s, %d second delay", user->nick, strtoint(chan->GetModeParameter('J')));
 198                         (*dl)[user] = time(NULL) + strtoint(chan->GetModeParameter('J'));
 199                 }
 200         }
 201
 202         virtual void OnChannelDelete(chanrec* chan)
 203         {
 204                 delaylist* dl;
 205
 206                 if (chan->GetExt("norejoinusers", dl))
 207                 {
 208                         DELETE(dl);
 209                         chan->Shrink("norejoinusers");
 210                 }
 211         }
 212
 213         virtual void OnCleanup(int target_type, void* item)
 214         {
 215                 if(target_type == TYPE_CHANNEL)
 216                         OnChannelDelete((chanrec*)item);
 217         }
 218
 219         virtual void Implements(char* List)
 220         {
 221                 List[I_OnCleanup] = List[I_OnChannelDelete] = List[I_OnUserPreJoin] = List[I_OnUserKick] = 1;
 222         }
 223
 224         virtual ~ModuleKickNoRejoin()
 225         {
 226                 ServerInstance->Modes->DelMode(kr);
 227                 DELETE(kr);
 228         }
 229
 230         virtual Version GetVersion()
 231         {
 232                 return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
 233         }
 234 };
 235
 236
 237 class ModuleKickNoRejoinFactory : public ModuleFactory
 238 {
 239  public:
 240         ModuleKickNoRejoinFactory()
 241         {
 242         }
 243
 244         ~ModuleKickNoRejoinFactory()
 245         {
 246         }
 247
 248         virtual Module * CreateModule(InspIRCd* Me)
 249         {
 250                 return new ModuleKickNoRejoin(Me);
 251         }
 252
 253 };
 254
 255
 256 extern "C" void * init_module( void )
 257 {
 258         return new ModuleKickNoRejoinFactory;
 259 }
 260