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(InspIRCd* Instance) : ModeHandler(Instance, 'd', 0, 0, false, MODETYPE_USER, false) { }
  24
  25         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding, bool)
  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(InspIRCd* Me)
  57                 : Module(Me)
  58         {
  59                 m1 = new User_d(ServerInstance);
  60                 if (!ServerInstance->Modes->AddMode(m1))
  61                         throw ModuleException("Could not add new modes!");
  62
  63                 OnRehash(NULL, "");
  64                 Implementation eventlist[] = { I_OnUserPreMessage, I_OnUserPreNotice, I_OnRehash, I_OnBuildExemptList };
  65                 ServerInstance->Modules->Attach(eventlist, this, 4);
  66         }
  67
  68
  69         virtual void OnRehash(User* user, const std::string&)
  70         {
  71                 ConfigReader* conf = new ConfigReader(ServerInstance);
  72                 deaf_bypasschars = conf->ReadValue("deaf", "bypasschars", 0);
  73                 deaf_bypasschars_uline = conf->ReadValue("deaf", "bypasscharsuline", 0);
  74
  75                 delete conf;
  76         }
  77
  78         virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  79         {
  80                 if (target_type == TYPE_CHANNEL)
  81                 {
  82                         Channel* chan = (Channel*)dest;
  83                         if (chan)
  84                                 this->BuildDeafList(MSG_NOTICE, chan, user, status, text, exempt_list);
  85                 }
  86
  87                 return 0;
  88         }
  89
  90         virtual int OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  91         {
  92                 if (target_type == TYPE_CHANNEL)
  93                 {
  94                         Channel* chan = (Channel*)dest;
  95                         if (chan)
  96                                 this->BuildDeafList(MSG_PRIVMSG, chan, user, status, text, exempt_list);
  97                 }
  98
  99                 return 0;
 100         }
 101
 102         virtual void OnBuildExemptList(MessageType message_type, Channel* chan, User* sender, char status, CUList &exempt_list, const std::string &text)
 103         {
 104                 BuildDeafList(message_type, chan, sender, status, text, exempt_list);
 105         }
 106
 107         virtual void BuildDeafList(MessageType message_type, Channel* chan, User* sender, char status, const std::string &text, CUList &exempt_list)
 108         {
 109                 CUList *ulist = chan->GetUsers();
 110                 bool is_a_uline;
 111                 bool is_bypasschar, is_bypasschar_avail;
 112                 bool is_bypasschar_uline, is_bypasschar_uline_avail;
 113
 114                 is_bypasschar = is_bypasschar_avail = is_bypasschar_uline = is_bypasschar_uline_avail = 0;
 115                 if (!deaf_bypasschars.empty())
 116                 {
 117                         is_bypasschar_avail = 1;
 118                         if (deaf_bypasschars.find(text[0], 0) != std::string::npos)
 119                                 is_bypasschar = 1;
 120                 }
 121                 if (!deaf_bypasschars_uline.empty())
 122                 {
 123                         is_bypasschar_uline_avail = 1;
 124                         if (deaf_bypasschars_uline.find(text[0], 0) != std::string::npos)
 125                                 is_bypasschar_uline = 1;
 126                 }
 127
 128                 /*
 129                  * If we have no bypasschars_uline in config, and this is a bypasschar (regular)
 130                  * Than it is obviously going to get through +d, no build required
 131                  */
 132                 if (!is_bypasschar_uline_avail && is_bypasschar)
 133                         return;
 134
 135                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 136                 {
 137                         /* not +d ? */
 138                         if (!i->first->IsModeSet('d'))
 139                                 continue; /* deliver message */
 140                         /* matched both U-line only and regular bypasses */
 141                         if (is_bypasschar && is_bypasschar_uline)
 142                                 continue; /* deliver message */
 143
 144                         is_a_uline = ServerInstance->ULine(i->first->server);
 145                         /* matched a U-line only bypass */
 146                         if (is_bypasschar_uline && is_a_uline)
 147                                 continue; /* deliver message */
 148                         /* matched a regular bypass */
 149                         if (is_bypasschar && !is_a_uline)
 150                                 continue; /* deliver message */
 151
 152                         if (status && !strchr(chan->GetAllPrefixChars(i->first), status))
 153                                 continue;
 154
 155                         /* don't deliver message! */
 156                         exempt_list[i->first] = i->first->nick;
 157                 }
 158         }
 159
 160         virtual ~ModuleDeaf()
 161         {
 162                 ServerInstance->Modes->DelMode(m1);
 163                 delete m1;
 164         }
 165
 166         virtual Version GetVersion()
 167         {
 168                 return Version("$Id$", VF_COMMON|VF_VENDOR,API_VERSION);
 169         }
 170
 171 };
 172
 173 MODULE_INIT(ModuleDeaf)