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_COMMON | 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                 if (isdigit(newnick[0])) /* don't even think about touching a switch to uid! */
  80                         return MOD_RES_PASSTHRU;
  81
  82                 // Allow forced nick changes.
  83                 if (ServerInstance->NICKForced.get(user))
  84                         return MOD_RES_PASSTHRU;
  85
  86                 for (UCListIter i = user->chans.begin(); i != user->chans.end(); i++)
  87                 {
  88                         Channel* curr = *i;
  89
  90                         ModResult res;
  91                         FIRST_MOD_RESULT(OnChannelRestrictionApply, res, (user,curr,"nonick"));
  92
  93                         if (res == MOD_RES_ALLOW)
  94                                 continue;
  95
  96                         if (override && IS_OPER(user))
  97                                 continue;
  98
  99                         if (!curr->GetExtBanStatus(user, 'N').check(!curr->IsModeSet('N')))
 100                         {
 101                                 user->WriteNumeric(ERR_CANTCHANGENICK, "%s :Can't change nickname while on %s (+N is set)",
 102                                         user->nick.c_str(), curr->name.c_str());
 103                                 return MOD_RES_DENY;
 104                         }
 105                 }
 106
 107                 return MOD_RES_PASSTHRU;
 108         }
 109
 110         virtual void OnRehash(User* user)
 111         {
 112                 ConfigReader Conf;
 113                 override = Conf.ReadFlag("nonicks", "operoverride", "no", 0);
 114         }
 115 };
 116
 117 MODULE_INIT(ModuleNoNickChange)