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 ((!adding) || (atoi(parameter.c_str()) > 0))
  72                 {
  73                         ServerInstance->Log(DEBUG,"Got parameter: '%s'",parameter.c_str());
  74
  75                         if (!channel->IsModeSet('J'))
  76                         {
  77                                 parameter = ConvToStr(atoi(parameter.c_str()));
  78                                 channel->SetModeParam('J', parameter.c_str(), adding);
  79                                 channel->SetMode('J', adding);
  80                                 return MODEACTION_ALLOW;
  81                         }
  82                         else
  83                         {
  84                                 if (!adding)
  85                                 {
  86                                         channel->SetModeParam('J', parameter.c_str(), adding);
  87                                         return MODEACTION_ALLOW;
  88                                 }
  89
  90                                 std::string cur_param = channel->GetModeParameter('J');
  91                                 if (cur_param == parameter)
  92                                 {
  93                                         // mode params match, don't change mode
  94                                         return MODEACTION_DENY;
  95                                 }
  96                                 else
  97                                 {
  98                                         // new mode param, replace old with new
  99                                         parameter = ConvToStr(atoi(parameter.c_str()));
 100                                         cur_param = ConvToStr(atoi(cur_param.c_str()));
 101                                         if (parameter != "0")
 102                                         {
 103                                                 channel->SetModeParam('J', cur_param.c_str(), false);
 104                                                 channel->SetModeParam('J', parameter.c_str(), adding);
 105                                                 return MODEACTION_ALLOW;
 106                                         }
 107                                         else
 108                                         {
 109                                                 /* Fix to jamie's fix, dont allow +J 0 on the new value! */
 110                                                 return MODEACTION_DENY;
 111                                         }
 112                                 }
 113                         }
 114                 }
 115                 else
 116                 {
 117                         return MODEACTION_DENY;
 118                 }
 119         }
 120 };
 121
 122 class ModuleKickNoRejoin : public Module
 123 {
 124
 125         KickRejoin* kr;
 126
 127 public:
 128
 129         ModuleKickNoRejoin(InspIRCd* Me)
 130                 : Module::Module(Me)
 131         {
 132
 133                 kr = new KickRejoin(ServerInstance);
 134                 ServerInstance->AddMode(kr, 'J');
 135         }
 136
 137         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
 138         {
 139                 if (chan)
 140                 {
 141                         delaylist* dl;
 142                         if (chan->GetExt("norejoinusers", dl))
 143                         {
 144                                 ServerInstance->Log(DEBUG, "m_kicknorejoin.so: got delay list, iterating over it");
 145                                 std::vector<userrec*> itemstoremove;
 146
 147                                 for (delaylist::iterator iter = dl->begin(); iter != dl->end(); iter++)
 148                                 {
 149                                         ServerInstance->Log(DEBUG, "m_kicknorejoin.so:\t[%s] => %d", iter->first->nick, iter->second);
 150                                         if (iter->second > time(NULL))
 151                                         {
 152                                                 ServerInstance->Log(DEBUG, "m_kicknorejoin.so: still inside time slot");
 153                                                 if (iter->first == user)
 154                                                 {
 155                                                         ServerInstance->Log(DEBUG, "m_kicknorejoin.so: and we have the right user");
 156                                                         user->WriteServ( "495 %s %s :You cannot rejoin this channel yet after being kicked (+J)", user->nick, chan->name);
 157                                                         return 1;
 158                                                 }
 159                                         }
 160                                         else
 161                                         {
 162                                                 // Expired record, remove.
 163                                                 ServerInstance->Log(DEBUG, "m_kicknorejoin.so: record expired");
 164                                                 itemstoremove.push_back(iter->first);
 165                                         }
 166                                 }
 167
 168                                 for (unsigned int i = 0; i < itemstoremove.size(); i++)
 169                                         dl->erase(itemstoremove[i]);
 170
 171                                 if (!dl->size())
 172                                 {
 173                                         // Now it's empty..
 174                                         DELETE(dl);
 175                                         chan->Shrink("norejoinusers");
 176                                 }
 177                         }
 178                 }
 179                 return 0;
 180         }
 181
 182         virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
 183         {
 184                 if (chan->IsModeSet('J') && (source != user))
 185                 {
 186                         delaylist* dl;
 187                         if (!chan->GetExt("norejoinusers", dl))
 188                         {
 189                                 dl = new delaylist;
 190                                 chan->Extend("norejoinusers", dl);
 191                         }
 192
 193                         ServerInstance->Log(DEBUG, "m_kicknorejoin.so: setting record for %s, %d second delay", user->nick, strtoint(chan->GetModeParameter('J')));
 194                         (*dl)[user] = time(NULL) + strtoint(chan->GetModeParameter('J'));
 195                 }
 196         }
 197
 198         virtual void OnChannelDelete(chanrec* chan)
 199         {
 200                 delaylist* dl;
 201
 202                 if (chan->GetExt("norejoinusers", dl))
 203                 {
 204                         DELETE(dl);
 205                         chan->Shrink("norejoinusers");
 206                 }
 207         }
 208
 209         virtual void OnCleanup(int target_type, void* item)
 210         {
 211                 if(target_type == TYPE_CHANNEL)
 212                         OnChannelDelete((chanrec*)item);
 213         }
 214
 215         virtual void Implements(char* List)
 216         {
 217                 List[I_OnCleanup] = List[I_OnChannelDelete] = List[I_OnUserPreJoin] = List[I_OnUserKick] = 1;
 218         }
 219
 220         virtual ~ModuleKickNoRejoin()
 221         {
 222                 ServerInstance->Modes->DelMode(kr);
 223                 DELETE(kr);
 224         }
 225
 226         virtual Version GetVersion()
 227         {
 228                 return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
 229         }
 230 };
 231
 232
 233 class ModuleKickNoRejoinFactory : public ModuleFactory
 234 {
 235  public:
 236         ModuleKickNoRejoinFactory()
 237         {
 238         }
 239
 240         ~ModuleKickNoRejoinFactory()
 241         {
 242         }
 243
 244         virtual Module * CreateModule(InspIRCd* Me)
 245         {
 246                 return new ModuleKickNoRejoin(Me);
 247         }
 248
 249 };
 250
 251
 252 extern "C" void * init_module( void )
 253 {
 254         return new ModuleKickNoRejoinFactory;
 255 }
 256