src/modules/m_nonicks.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/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 support for channel mode +N & extban +b N: which prevents nick changes on channel */
  17
  18 class NoNicks : public ModeHandler
  19 {
  20  public:
  21         NoNicks(Module* Creator) : ModeHandler(Creator, "nonick", 'N', PARAM_NONE, MODETYPE_CHANNEL) { }
  22
  23         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
  24         {
  25                 if (adding)
  26                 {
  27                         if (!channel->IsModeSet('N'))
  28                         {
  29                                 channel->SetMode('N',true);
  30                                 return MODEACTION_ALLOW;
  31                         }
  32                 }
  33                 else
  34                 {
  35                         if (channel->IsModeSet('N'))
  36                         {
  37                                 channel->SetMode('N',false);
  38                                 return MODEACTION_ALLOW;
  39                         }
  40                 }
  41
  42                 return MODEACTION_DENY;
  43         }
  44 };
  45
  46 class ModuleNoNickChange : public Module
  47 {
  48         NoNicks nn;
  49         bool override;
  50  public:
  51         ModuleNoNickChange() : nn(this)
  52         {
  53                 OnRehash(NULL);
  54                 ServerInstance->Modes->AddMode(&nn);
  55                 Implementation eventlist[] = { I_OnUserPreNick, I_On005Numeric, I_OnRehash };
  56                 ServerInstance->Modules->Attach(eventlist, this, 3);
  57         }
  58
  59         virtual ~ModuleNoNickChange()
  60         {
  61         }
  62
  63         virtual Version GetVersion()
  64         {
  65                 return Version("Provides support for channel mode +N & extban +b N: which prevents nick changes on channel", VF_VENDOR);
  66         }
  67
  68
  69         virtual void On005Numeric(std::string &output)
  70         {
  71                 ServerInstance->AddExtBanChar('N');
  72         }
  73
  74         virtual ModResult OnUserPreNick(User* user, const std::string &newnick)
  75         {
  76                 if (!IS_LOCAL(user))
  77                         return MOD_RES_PASSTHRU;
  78
  79                 // Allow forced nick changes.
  80                 if (ServerInstance->NICKForced.get(user))
  81                         return MOD_RES_PASSTHRU;
  82
  83                 for (UCListIter i = user->chans.begin(); i != user->chans.end(); i++)
  84                 {
  85                         Channel* curr = *i;
  86
  87                         ModResult res = ServerInstance->OnCheckExemption(user,curr,"nonick");
  88
  89                         if (res == MOD_RES_ALLOW)
  90                                 continue;
  91
  92                         if (override && IS_OPER(user))
  93                                 continue;
  94
  95                         if (!curr->GetExtBanStatus(user, 'N').check(!curr->IsModeSet('N')))
  96                         {
  97                                 user->WriteNumeric(ERR_CANTCHANGENICK, "%s :Can't change nickname while on %s (+N is set)",
  98                                         user->nick.c_str(), curr->name.c_str());
  99                                 return MOD_RES_DENY;
 100                         }
 101                 }
 102
 103                 return MOD_RES_PASSTHRU;
 104         }
 105
 106         virtual void OnRehash(User* user)
 107         {
 108                 ConfigReader Conf;
 109                 override = Conf.ReadFlag("nonicks", "operoverride", "no", 0);
 110         }
 111 };
 112
 113 MODULE_INIT(ModuleNoNickChange)