src/modules/m_kicknorejoin.cpp

   1 #include <time.h>
   2 #include <map>
   3 #include <vector>
   4 #include <sstream>
   5 #include "users.h"
   6 #include "channels.h"
   7 #include "modules.h"
   8 #include "inspircd.h"
   9
  10 /* $ModDesc: Provides channel mode +J (delay rejoin after kick) */
  11
  12
  13
  14 inline int strtoint(const std::string &str)
  15 {
  16         std::istringstream ss(str);
  17         int result;
  18         ss >> result;
  19         return result;
  20 }
  21
  22 typedef std::map<userrec*, time_t> delaylist;
  23
  24 /** Handles channel mode +J
  25  */
  26 class KickRejoin : public ModeHandler
  27 {
  28  public:
  29         KickRejoin(InspIRCd* Instance) : ModeHandler(Instance, 'J', 1, 0, false, MODETYPE_CHANNEL, false) { }
  30
  31         ModePair ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string &parameter)
  32         {
  33                 if (channel->IsModeSet('J'))
  34                         return std::make_pair(true, channel->GetModeParameter('J'));
  35                 else
  36                         return std::make_pair(false, parameter);
  37         }
  38
  39         bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
  40         {
  41                 /* When TS is equal, the alphabetically later one wins */
  42                 return (their_param < our_param);
  43         }
  44
  45         ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
  46         {
  47                 if (!adding)
  48                 {
  49                         // Taking the mode off, we need to clean up.
  50                         delaylist* dl;
  51
  52                         if (channel->GetExt("norejoinusers", dl))
  53                         {
  54                                 DELETE(dl);
  55                                 channel->Shrink("norejoinusers");
  56                         }
  57                 }
  58                 if ((!adding) || (atoi(parameter.c_str()) > 0))
  59                 {
  60                         ServerInstance->Log(DEBUG,"Got parameter: '%s'",parameter.c_str());
  61
  62                         if (!channel->IsModeSet('J'))
  63                         {
  64                                 parameter = ConvToStr(atoi(parameter.c_str()));
  65                                 channel->SetModeParam('J', parameter.c_str(), adding);
  66                                 channel->SetMode('J', adding);
  67                                 return MODEACTION_ALLOW;
  68                         }
  69                         else
  70                         {
  71                                 if (!adding)
  72                                 {
  73                                         channel->SetModeParam('J', parameter.c_str(), adding);
  74                                         return MODEACTION_ALLOW;
  75                                 }
  76
  77                                 std::string cur_param = channel->GetModeParameter('J');
  78                                 if (cur_param == parameter)
  79                                 {
  80                                         // mode params match, don't change mode
  81                                         return MODEACTION_DENY;
  82                                 }
  83                                 else
  84                                 {
  85                                         // new mode param, replace old with new
  86                                         parameter = ConvToStr(atoi(parameter.c_str()));
  87                                         cur_param = ConvToStr(atoi(cur_param.c_str()));
  88                                         if (parameter != "0")
  89                                         {
  90                                                 channel->SetModeParam('J', cur_param.c_str(), false);
  91                                                 channel->SetModeParam('J', parameter.c_str(), adding);
  92                                                 return MODEACTION_ALLOW;
  93                                         }
  94                                         else
  95                                         {
  96                                                 /* Fix to jamie's fix, dont allow +J 0 on the new value! */
  97                                                 return MODEACTION_DENY;
  98                                         }
  99                                 }
 100                         }
 101                 }
 102                 else
 103                 {
 104                         return MODEACTION_DENY;
 105                 }
 106         }
 107 };
 108
 109 class ModuleKickNoRejoin : public Module
 110 {
 111
 112         KickRejoin* kr;
 113
 114 public:
 115
 116         ModuleKickNoRejoin(InspIRCd* Me)
 117                 : Module::Module(Me)
 118         {
 119
 120                 kr = new KickRejoin(ServerInstance);
 121                 ServerInstance->AddMode(kr, 'J');
 122         }
 123
 124         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
 125         {
 126                 if (chan)
 127                 {
 128                         delaylist* dl;
 129                         if (chan->GetExt("norejoinusers", dl))
 130                         {
 131                                 ServerInstance->Log(DEBUG, "m_kicknorejoin.so: got delay list, iterating over it");
 132                                 std::vector<userrec*> itemstoremove;
 133
 134                                 for (delaylist::iterator iter = dl->begin(); iter != dl->end(); iter++)
 135                                 {
 136                                         ServerInstance->Log(DEBUG, "m_kicknorejoin.so:\t[%s] => %d", iter->first->nick, iter->second);
 137                                         if (iter->second > time(NULL))
 138                                         {
 139                                                 ServerInstance->Log(DEBUG, "m_kicknorejoin.so: still inside time slot");
 140                                                 if (iter->first == user)
 141                                                 {
 142                                                         ServerInstance->Log(DEBUG, "m_kicknorejoin.so: and we have the right user");
 143                                                         user->WriteServ( "495 %s %s :You cannot rejoin this channel yet after being kicked (+J)", user->nick, chan->name);
 144                                                         return 1;
 145                                                 }
 146                                         }
 147                                         else
 148                                         {
 149                                                 // Expired record, remove.
 150                                                 ServerInstance->Log(DEBUG, "m_kicknorejoin.so: record expired");
 151                                                 itemstoremove.push_back(iter->first);
 152                                         }
 153                                 }
 154
 155                                 for (unsigned int i = 0; i < itemstoremove.size(); i++)
 156                                         dl->erase(itemstoremove[i]);
 157
 158                                 if (!dl->size())
 159                                 {
 160                                         // Now it's empty..
 161                                         DELETE(dl);
 162                                         chan->Shrink("norejoinusers");
 163                                 }
 164                         }
 165                 }
 166                 return 0;
 167         }
 168
 169         virtual void OnUserKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
 170         {
 171                 if (chan->IsModeSet('J') && (source != user))
 172                 {
 173                         delaylist* dl;
 174                         if (!chan->GetExt("norejoinusers", dl))
 175                         {
 176                                 dl = new delaylist;
 177                                 chan->Extend("norejoinusers", dl);
 178                         }
 179
 180                         ServerInstance->Log(DEBUG, "m_kicknorejoin.so: setting record for %s, %d second delay", user->nick, strtoint(chan->GetModeParameter('J')));
 181                         (*dl)[user] = time(NULL) + strtoint(chan->GetModeParameter('J'));
 182                 }
 183         }
 184
 185         virtual void OnChannelDelete(chanrec* chan)
 186         {
 187                 delaylist* dl;
 188
 189                 if (chan->GetExt("norejoinusers", dl))
 190                 {
 191                         DELETE(dl);
 192                         chan->Shrink("norejoinusers");
 193                 }
 194         }
 195
 196         virtual void OnCleanup(int target_type, void* item)
 197         {
 198                 if(target_type == TYPE_CHANNEL)
 199                         OnChannelDelete((chanrec*)item);
 200         }
 201
 202         virtual void Implements(char* List)
 203         {
 204                 List[I_OnCleanup] = List[I_OnChannelDelete] = List[I_OnUserPreJoin] = List[I_OnUserKick] = 1;
 205         }
 206
 207         virtual ~ModuleKickNoRejoin()
 208         {
 209                 ServerInstance->Modes->DelMode(kr);
 210                 DELETE(kr);
 211         }
 212
 213         virtual Version GetVersion()
 214         {
 215                 return Version(1, 0, 0, 0, VF_COMMON | VF_VENDOR);
 216         }
 217 };
 218
 219
 220 class ModuleKickNoRejoinFactory : public ModuleFactory
 221 {
 222  public:
 223         ModuleKickNoRejoinFactory()
 224         {
 225         }
 226
 227         ~ModuleKickNoRejoinFactory()
 228         {
 229         }
 230
 231         virtual Module * CreateModule(InspIRCd* Me)
 232         {
 233                 return new ModuleKickNoRejoin(Me);
 234         }
 235
 236 };
 237
 238
 239 extern "C" void * init_module( void )
 240 {
 241         return new ModuleKickNoRejoinFactory;
 242 }
 243