src/modules/m_deaf.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/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 #include "users.h"
  16 #include "channels.h"
  17 #include "modules.h"
  18
  19 /* $ModDesc: Provides support for ircu style usermode +d (deaf to channel messages and channel notices) */
  20
  21 /** User mode +d - filter out channel messages and channel notices
  22  */
  23 class User_d : public ModeHandler
  24 {
  25  public:
  26         User_d(InspIRCd* Instance) : ModeHandler(Instance, 'd', 0, 0, false, MODETYPE_USER, false) { }
  27
  28         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding, bool)
  29         {
  30                 if (adding)
  31                 {
  32                         if (!dest->IsModeSet('d'))
  33                         {
  34                                 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, dest->nick);
  35                                 dest->SetMode('d',true);
  36                                 return MODEACTION_ALLOW;
  37                         }
  38                 }
  39                 else
  40                 {
  41                         if (dest->IsModeSet('d'))
  42                         {
  43                                 dest->SetMode('d',false);
  44                                 return MODEACTION_ALLOW;
  45                         }
  46                 }
  47                 return MODEACTION_DENY;
  48         }
  49 };
  50
  51 class ModuleDeaf : public Module
  52 {
  53         User_d* m1;
  54
  55         std::string deaf_bypasschars;
  56         std::string deaf_bypasschars_uline;
  57
  58  public:
  59         ModuleDeaf(InspIRCd* Me)
  60                 : Module(Me)
  61         {
  62                 m1 = new User_d(ServerInstance);
  63                 if (!ServerInstance->Modes->AddMode(m1))
  64                         throw ModuleException("Could not add new modes!");
  65
  66                 OnRehash(NULL, "");
  67                 Implementation eventlist[] = { I_OnUserPreMessage, I_OnUserPreNotice, I_OnRehash, I_OnBuildExemptList };
  68                 ServerInstance->Modules->Attach(eventlist, this, 4);
  69         }
  70
  71
  72         virtual void OnRehash(User* user, const std::string&)
  73         {
  74                 ConfigReader* conf = new ConfigReader(ServerInstance);
  75                 deaf_bypasschars = conf->ReadValue("deaf", "bypasschars", 0);
  76                 deaf_bypasschars_uline = conf->ReadValue("deaf", "bypasscharsuline", 0);
  77
  78                 delete conf;
  79         }
  80
  81         virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  82         {
  83                 if (target_type == TYPE_CHANNEL)
  84                 {
  85                         Channel* chan = (Channel*)dest;
  86                         if (chan)
  87                                 this->BuildDeafList(MSG_NOTICE, chan, user, status, text, exempt_list);
  88                 }
  89
  90                 return 0;
  91         }
  92
  93         virtual int OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  94         {
  95                 if (target_type == TYPE_CHANNEL)
  96                 {
  97                         Channel* chan = (Channel*)dest;
  98                         if (chan)
  99                                 this->BuildDeafList(MSG_PRIVMSG, chan, user, status, text, exempt_list);
 100                 }
 101
 102                 return 0;
 103         }
 104
 105         virtual void OnBuildExemptList(MessageType message_type, Channel* chan, User* sender, char status, CUList &exempt_list, const std::string &text)
 106         {
 107                 BuildDeafList(message_type, chan, sender, status, text, exempt_list);
 108         }
 109
 110         virtual void BuildDeafList(MessageType message_type, Channel* chan, User* sender, char status, const std::string &text, CUList &exempt_list)
 111         {
 112                 CUList *ulist = chan->GetUsers();
 113                 bool is_a_uline;
 114                 bool is_bypasschar, is_bypasschar_avail;
 115                 bool is_bypasschar_uline, is_bypasschar_uline_avail;
 116
 117                 is_bypasschar = is_bypasschar_avail = is_bypasschar_uline = is_bypasschar_uline_avail = 0;
 118                 if (!deaf_bypasschars.empty())
 119                 {
 120                         is_bypasschar_avail = 1;
 121                         if (deaf_bypasschars.find(text[0], 0) != std::string::npos)
 122                                 is_bypasschar = 1;
 123                 }
 124                 if (!deaf_bypasschars_uline.empty())
 125                 {
 126                         is_bypasschar_uline_avail = 1;
 127                         if (deaf_bypasschars_uline.find(text[0], 0) != std::string::npos)
 128                                 is_bypasschar_uline = 1;
 129                 }
 130
 131                 /*
 132                  * If we have no bypasschars_uline in config, and this is a bypasschar (regular)
 133                  * Than it is obviously going to get through +d, no build required
 134                  */
 135                 if (!is_bypasschar_uline_avail && is_bypasschar)
 136                         return;
 137
 138                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 139                 {
 140                         /* not +d ? */
 141                         if (!i->first->IsModeSet('d'))
 142                                 continue; /* deliver message */
 143                         /* matched both U-line only and regular bypasses */
 144                         if (is_bypasschar && is_bypasschar_uline)
 145                                 continue; /* deliver message */
 146
 147                         is_a_uline = ServerInstance->ULine(i->first->server);
 148                         /* matched a U-line only bypass */
 149                         if (is_bypasschar_uline && is_a_uline)
 150                                 continue; /* deliver message */
 151                         /* matched a regular bypass */
 152                         if (is_bypasschar && !is_a_uline)
 153                                 continue; /* deliver message */
 154
 155                         if (status && !strchr(chan->GetAllPrefixChars(i->first), status))
 156                                 continue;
 157
 158                         /* don't deliver message! */
 159                         exempt_list[i->first] = i->first->nick;
 160                 }
 161         }
 162
 163         virtual ~ModuleDeaf()
 164         {
 165                 ServerInstance->Modes->DelMode(m1);
 166                 delete m1;
 167         }
 168
 169         virtual Version GetVersion()
 170         {
 171                 return Version(1,2,0,0,VF_COMMON|VF_VENDOR,API_VERSION);
 172         }
 173
 174 };
 175
 176 MODULE_INIT(ModuleDeaf)