src/modules/m_deaf.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 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 ircu style usermode +d (deaf to channel messages and channel notices) */
  17
  18 /** User mode +d - filter out channel messages and channel notices
  19  */
  20 class User_d : public ModeHandler
  21 {
  22  public:
  23         User_d(Module* Creator) : ModeHandler(Creator, "deaf", 'd', PARAM_NONE, MODETYPE_USER) { }
  24
  25         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
  26         {
  27                 if (adding)
  28                 {
  29                         if (!dest->IsModeSet('d'))
  30                         {
  31                                 dest->WriteServ("NOTICE %s :*** You have enabled usermode +d, deaf mode. This mode means you WILL NOT receive any messages from any channels you are in. If you did NOT mean to do this, use /mode %s -d.", dest->nick.c_str(), dest->nick.c_str());
  32                                 dest->SetMode('d',true);
  33                                 return MODEACTION_ALLOW;
  34                         }
  35                 }
  36                 else
  37                 {
  38                         if (dest->IsModeSet('d'))
  39                         {
  40                                 dest->SetMode('d',false);
  41                                 return MODEACTION_ALLOW;
  42                         }
  43                 }
  44                 return MODEACTION_DENY;
  45         }
  46 };
  47
  48 class ModuleDeaf : public Module
  49 {
  50         User_d m1;
  51
  52         std::string deaf_bypasschars;
  53         std::string deaf_bypasschars_uline;
  54
  55  public:
  56         ModuleDeaf()
  57                 : m1(this)
  58         {
  59                 if (!ServerInstance->Modes->AddMode(&m1))
  60                         throw ModuleException("Could not add new modes!");
  61
  62                 OnRehash(NULL);
  63                 Implementation eventlist[] = { I_OnUserPreMessage, I_OnUserPreNotice, I_OnRehash };
  64                 ServerInstance->Modules->Attach(eventlist, this, 3);
  65         }
  66
  67
  68         virtual void OnRehash(User* user)
  69         {
  70                 ConfigReader conf;
  71                 deaf_bypasschars = conf.ReadValue("deaf", "bypasschars", 0);
  72                 deaf_bypasschars_uline = conf.ReadValue("deaf", "bypasscharsuline", 0);
  73         }
  74
  75         virtual ModResult OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  76         {
  77                 if (target_type == TYPE_CHANNEL)
  78                 {
  79                         Channel* chan = (Channel*)dest;
  80                         if (chan)
  81                                 this->BuildDeafList(MSG_NOTICE, chan, user, status, text, exempt_list);
  82                 }
  83
  84                 return MOD_RES_PASSTHRU;
  85         }
  86
  87         virtual ModResult OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  88         {
  89                 if (target_type == TYPE_CHANNEL)
  90                 {
  91                         Channel* chan = (Channel*)dest;
  92                         if (chan)
  93                                 this->BuildDeafList(MSG_PRIVMSG, chan, user, status, text, exempt_list);
  94                 }
  95
  96                 return MOD_RES_PASSTHRU;
  97         }
  98
  99         virtual void BuildDeafList(MessageType message_type, Channel* chan, User* sender, char status, const std::string &text, CUList &exempt_list)
 100         {
 101                 const UserMembList *ulist = chan->GetUsers();
 102                 bool is_a_uline;
 103                 bool is_bypasschar, is_bypasschar_avail;
 104                 bool is_bypasschar_uline, is_bypasschar_uline_avail;
 105
 106                 is_bypasschar = is_bypasschar_avail = is_bypasschar_uline = is_bypasschar_uline_avail = 0;
 107                 if (!deaf_bypasschars.empty())
 108                 {
 109                         is_bypasschar_avail = 1;
 110                         if (deaf_bypasschars.find(text[0], 0) != std::string::npos)
 111                                 is_bypasschar = 1;
 112                 }
 113                 if (!deaf_bypasschars_uline.empty())
 114                 {
 115                         is_bypasschar_uline_avail = 1;
 116                         if (deaf_bypasschars_uline.find(text[0], 0) != std::string::npos)
 117                                 is_bypasschar_uline = 1;
 118                 }
 119
 120                 /*
 121                  * If we have no bypasschars_uline in config, and this is a bypasschar (regular)
 122                  * Than it is obviously going to get through +d, no build required
 123                  */
 124                 if (!is_bypasschar_uline_avail && is_bypasschar)
 125                         return;
 126
 127                 for (UserMembCIter i = ulist->begin(); i != ulist->end(); i++)
 128                 {
 129                         /* not +d ? */
 130                         if (!i->first->IsModeSet('d'))
 131                                 continue; /* deliver message */
 132                         /* matched both U-line only and regular bypasses */
 133                         if (is_bypasschar && is_bypasschar_uline)
 134                                 continue; /* deliver message */
 135
 136                         is_a_uline = ServerInstance->ULine(i->first->server);
 137                         /* matched a U-line only bypass */
 138                         if (is_bypasschar_uline && is_a_uline)
 139                                 continue; /* deliver message */
 140                         /* matched a regular bypass */
 141                         if (is_bypasschar && !is_a_uline)
 142                                 continue; /* deliver message */
 143
 144                         if (status && !strchr(chan->GetAllPrefixChars(i->first), status))
 145                                 continue;
 146
 147                         /* don't deliver message! */
 148                         exempt_list.insert(i->first);
 149                 }
 150         }
 151
 152         virtual ~ModuleDeaf()
 153         {
 154         }
 155
 156         virtual Version GetVersion()
 157         {
 158                 return Version("Provides support for ircu style usermode +d (deaf to channel messages and channel notices)", VF_COMMON|VF_VENDOR);
 159         }
 160
 161 };
 162
 163 MODULE_INIT(ModuleDeaf)