src/modules/m_deaf.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 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)
  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->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         void Implements(char* List)
  72         {
  73                 List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnRehash] = List[I_OnBuildExemptList] = 1;
  74         }
  75
  76         virtual void OnRehash(User* user, const std::string&)
  77         {
  78                 ConfigReader* conf = new ConfigReader(ServerInstance);
  79                 deaf_bypasschars = conf->ReadValue("deaf", "bypasschars", 0);
  80                 deaf_bypasschars_uline = conf->ReadValue("deaf", "bypasscharsuline", 0);
  81
  82                 DELETE(conf);
  83         }
  84
  85         virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  86         {
  87                 if (target_type == TYPE_CHANNEL)
  88                 {
  89                         Channel* chan = (Channel*)dest;
  90                         if (chan)
  91                                 this->BuildDeafList(MSG_NOTICE, chan, user, status, text, exempt_list);
  92                 }
  93
  94                 return 0;
  95         }
  96
  97         virtual int OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
  98         {
  99                 if (target_type == TYPE_CHANNEL)
 100                 {
 101                         Channel* chan = (Channel*)dest;
 102                         if (chan)
 103                                 this->BuildDeafList(MSG_PRIVMSG, chan, user, status, text, exempt_list);
 104                 }
 105
 106                 return 0;
 107         }
 108
 109         virtual void OnBuildExemptList(MessageType message_type, Channel* chan, User* sender, char status, CUList &exempt_list, const std::string &text)
 110         {
 111                 BuildDeafList(message_type, chan, sender, status, text, exempt_list);
 112         }
 113
 114         virtual void BuildDeafList(MessageType message_type, Channel* chan, User* sender, char status, const std::string &text, CUList &exempt_list)
 115         {
 116                 CUList *ulist;
 117                 bool is_a_uline;
 118                 bool is_bypasschar, is_bypasschar_avail;
 119                 bool is_bypasschar_uline, is_bypasschar_uline_avail;
 120
 121                 is_bypasschar = is_bypasschar_avail = is_bypasschar_uline = is_bypasschar_uline_avail = 0;
 122                 if (!deaf_bypasschars.empty())
 123                 {
 124                         is_bypasschar_avail = 1;
 125                         if (deaf_bypasschars.find(text[0], 0) != string::npos)
 126                                 is_bypasschar = 1;
 127                 }
 128                 if (!deaf_bypasschars_uline.empty())
 129                 {
 130                         is_bypasschar_uline_avail = 1;
 131                         if (deaf_bypasschars_uline.find(text[0], 0) != string::npos)
 132                                 is_bypasschar_uline = 1;
 133                 }
 134
 135                 /*
 136                  * If we have no bypasschars_uline in config, and this is a bypasschar (regular)
 137                  * Than it is obviously going to get through +d, no build required
 138                  */
 139                 if (!is_bypasschar_uline_avail && is_bypasschar)
 140                         return;
 141
 142                 switch (status)
 143                 {
 144                         case '@':
 145                                 ulist = chan->GetOppedUsers();
 146                                 break;
 147                         case '%':
 148                                 ulist = chan->GetHalfoppedUsers();
 149                                 break;
 150                         case '+':
 151                                 ulist = chan->GetVoicedUsers();
 152                                 break;
 153                         default:
 154                                 ulist = chan->GetUsers();
 155                                 break;
 156                 }
 157
 158                 for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
 159                 {
 160                         /* not +d ? */
 161                         if (!i->first->IsModeSet('d'))
 162                                 continue; /* deliver message */
 163                         /* matched both U-line only and regular bypasses */
 164                         if (is_bypasschar && is_bypasschar_uline)
 165                                 continue; /* deliver message */
 166
 167                         is_a_uline = ServerInstance->ULine(i->first->server);
 168                         /* matched a U-line only bypass */
 169                         if (is_bypasschar_uline && is_a_uline)
 170                                 continue; /* deliver message */
 171                         /* matched a regular bypass */
 172                         if (is_bypasschar && !is_a_uline)
 173                                 continue; /* deliver message */
 174
 175                         /* don't deliver message! */
 176                         exempt_list[i->first] = i->first->nick;
 177                 }
 178         }
 179
 180         virtual ~ModuleDeaf()
 181         {
 182                 ServerInstance->Modes->DelMode(m1);
 183                 DELETE(m1);
 184         }
 185
 186         virtual Version GetVersion()
 187         {
 188                 return Version(1,1,0,0,VF_COMMON|VF_VENDOR,API_VERSION);
 189         }
 190
 191 };
 192
 193 MODULE_INIT(ModuleDeaf)