src/modules/m_silence.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include <stdio.h>
  20 #include <string>
  21 #include <vector>
  22 #include "users.h"
  23 #include "channels.h"
  24 #include "modules.h"
  25 #include "helperfuncs.h"
  26 #include "hashcomp.h"
  27
  28 /* $ModDesc: Provides support for the /SILENCE command */
  29
  30
  31 // This typedef holds a silence list. Each user may or may not have a
  32 // silencelist, if a silence list is empty for a user, he/she does not
  33 // have one of these structures associated with their user record.
  34 typedef std::vector<std::string> silencelist;
  35
  36 class cmd_silence : public command_t
  37 {
  38  public:
  39         cmd_silence() : command_t("SILENCE", 0, 1)
  40         {
  41                 this->source = "m_silence.so";
  42         }
  43
  44         void Handle (char **parameters, int pcnt, userrec *user)
  45         {
  46                 if (!pcnt)
  47                 {
  48                         // no parameters, show the current silence list.
  49                         // Use Extensible::GetExt to fetch the silence list
  50                         silencelist* sl = (silencelist*)user->GetExt("silence_list");
  51                         // if the user has a silence list associated with their user record, show it
  52                         if (sl)
  53                         {
  54                                 for (silencelist::const_iterator c = sl->begin(); c < sl->end(); c++)
  55                                 {
  56                                         WriteServ(user->fd,"271 %s %s %s!*@*",user->nick, user->nick,c->c_str());
  57                                 }
  58                         }
  59                         WriteServ(user->fd,"272 %s :End of Silence List",user->nick);
  60                 }
  61                 else if (pcnt > 0)
  62                 {
  63                         // one or more parameters, add or delete entry from the list (only the first parameter is used)
  64                         char *nick = parameters[0];
  65                         if (nick[0] == '-')
  66                         {
  67                                 // removing an item from the list
  68                                 nick++;
  69                                 // fetch their silence list
  70                                 silencelist* sl = (silencelist*)user->GetExt("silence_list");
  71                                 // does it contain any entries and does it exist?
  72                                 if (sl)
  73                                 {
  74                                         if (sl->size())
  75                                         {
  76                                                 for (silencelist::iterator i = sl->begin(); i != sl->end(); i++)
  77                                                 {
  78                                                         // search through for the item
  79                                                         irc::string listitem = i->c_str();
  80                                                         irc::string target = nick;
  81                                                         if (listitem == target)
  82                                                         {
  83                                                                 sl->erase(i);
  84                                                                 WriteServ(user->fd,"950 %s %s :Removed %s!*@* from silence list",user->nick, user->nick,nick);
  85                                                                 // we have modified the vector from within a loop, we must now bail out
  86                                                                 return;
  87                                                         }
  88                                                 }
  89                                         }
  90                                         if (!sl->size())
  91                                         {
  92                                                 // tidy up -- if a user's list is empty, theres no use having it
  93                                                 // hanging around in the user record.
  94                                                 delete sl;
  95                                                 user->Shrink("silence_list");
  96                                         }
  97                                 }
  98                         }
  99                         else if (nick[0] == '+')
 100                         {
 101                                 nick++;
 102                                 // fetch the user's current silence list
 103                                 silencelist* sl = (silencelist*)user->GetExt("silence_list");
 104                                 // what, they dont have one??? WE'RE ALL GONNA DIE! ...no, we just create an empty one.
 105                                 if (!sl)
 106                                 {
 107                                         sl = new silencelist;
 108                                         user->Extend(std::string("silence_list"),(char*)sl);
 109                                 }
 110                                 // add the nick to it -- silence only takes nicks for some reason even though its list shows masks
 111                                 for (silencelist::iterator n = sl->begin(); n != sl->end();  n++)
 112                                 {
 113                                         irc::string listitem = n->c_str();
 114                                         irc::string target = nick;
 115                                         if (listitem == target)
 116                                         {
 117                                                 WriteServ(user->fd,"952 %s %s :%s is already on your silence list",user->nick, user->nick,nick);
 118                                                 return;
 119                                         }
 120                                 }
 121                                 sl->push_back(std::string(nick));
 122                                 WriteServ(user->fd,"951 %s %s :Added %s!*@* to silence list",user->nick, user->nick,nick);
 123                                 return;
 124                         }
 125                 }
 126                 return;
 127         }
 128 };
 129
 130 class ModuleSilence : public Module
 131 {
 132         Server *Srv;
 133         cmd_silence* mycommand;
 134  public:
 135
 136         ModuleSilence(Server* Me)
 137                 : Module::Module(Me)
 138         {
 139                 Srv = Me;
 140                 mycommand = new cmd_silence();
 141                 Srv->AddCommand(mycommand);
 142         }
 143
 144         void Implements(char* List)
 145         {
 146                 List[I_OnUserQuit] = List[I_On005Numeric] = List[I_OnUserPreNotice] = List[I_OnUserPreMessage] = 1;
 147         }
 148
 149         virtual void OnUserQuit(userrec* user, const std::string &reason)
 150         {
 151                 // when the user quits tidy up any silence list they might have just to keep things tidy
 152                 // and to prevent a HONKING BIG MEMORY LEAK!
 153                 silencelist* sl = (silencelist*)user->GetExt("silence_list");
 154                 if (sl)
 155                 {
 156                         delete sl;
 157                         user->Shrink("silence_list");
 158                 }
 159         }
 160
 161         virtual void On005Numeric(std::string &output)
 162         {
 163                 // we don't really have a limit...
 164                 output = output + " SILENCE=999";
 165         }
 166
 167         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status)
 168         {
 169                 // im not sure how unreal's silence operates but ours is sensible. It blocks notices and
 170                 // privmsgs from people on the silence list, directed privately at the user.
 171                 // channel messages are unaffected (ever tried to follow the flow of conversation in
 172                 // a channel when you've set an ignore on the two most talkative people?)
 173                 if (target_type == TYPE_USER)
 174                 {
 175                         userrec* u = (userrec*)dest;
 176                         silencelist* sl = (silencelist*)u->GetExt("silence_list");
 177                         if (sl)
 178                         {
 179                                 for (silencelist::const_iterator c = sl->begin(); c != sl->end(); c++)
 180                                 {
 181                                         irc::string listitem = c->c_str();
 182                                         irc::string target = user->nick;
 183                                         if (listitem == target)
 184                                         {
 185                                                 return 1;
 186                                         }
 187                                 }
 188                         }
 189                 }
 190                 return 0;
 191         }
 192
 193         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status)
 194         {
 195                 return OnUserPreNotice(user,dest,target_type,text,status);
 196         }
 197
 198         virtual ~ModuleSilence()
 199         {
 200         }
 201
 202         virtual Version GetVersion()
 203         {
 204                 return Version(1,0,0,1,VF_VENDOR);
 205         }
 206 };
 207
 208
 209 class ModuleSilenceFactory : public ModuleFactory
 210 {
 211  public:
 212         ModuleSilenceFactory()
 213         {
 214         }
 215
 216         ~ModuleSilenceFactory()
 217         {
 218         }
 219
 220         virtual Module * CreateModule(Server* Me)
 221         {
 222                 return new ModuleSilence(Me);
 223         }
 224
 225 };
 226
 227
 228 extern "C" void * init_module( void )
 229 {
 230         return new ModuleSilenceFactory;
 231 }
 232