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 "hashcomp.h"
  26 #include "inspircd.h"
  27 #include "wildcard.h"
  28
  29 /* $ModDesc: Provides support for the /SILENCE command */
  30
  31
  32 // This typedef holds a silence list. Each user may or may not have a
  33 // silencelist, if a silence list is empty for a user, he/she does not
  34 // have one of these structures associated with their user record.
  35 typedef std::vector<std::string> silencelist;
  36
  37 class cmd_silence : public command_t
  38 {
  39  public:
  40         cmd_silence (InspIRCd* Instance) : command_t(Instance,"SILENCE", 0, 0)
  41         {
  42                 this->source = "m_silence.so";
  43                 syntax = "{[+|-]<mask>}";
  44         }
  45
  46         CmdResult Handle (const char** parameters, int pcnt, userrec *user)
  47         {
  48                 if (!pcnt)
  49                 {
  50                         // no parameters, show the current silence list.
  51                         // Use Extensible::GetExt to fetch the silence list
  52                         silencelist* sl;
  53                         user->GetExt("silence_list", sl);
  54                         // if the user has a silence list associated with their user record, show it
  55                         if (sl)
  56                         {
  57                                 for (silencelist::const_iterator c = sl->begin(); c < sl->end(); c++)
  58                                 {
  59                                         user->WriteServ("271 %s %s %s",user->nick, user->nick,c->c_str());
  60                                 }
  61                         }
  62                         user->WriteServ("272 %s :End of Silence List",user->nick);
  63
  64                         return CMD_SUCCESS;
  65                 }
  66                 else if (pcnt > 0)
  67                 {
  68                         // one or more parameters, add or delete entry from the list (only the first parameter is used)
  69                         std::string mask = parameters[0] + 1;
  70                         char action = *parameters[0];
  71
  72                         if (!mask.length())
  73                         {
  74                                 // 'SILENCE +' or 'SILENCE -', assume *!*@*
  75                                 mask = "*!*@*";
  76                         }
  77
  78                         ModeParser::CleanMask(mask);
  79
  80                         if (action == '-')
  81                         {
  82                                 // fetch their silence list
  83                                 silencelist* sl;
  84                                 user->GetExt("silence_list", sl);
  85                                 // does it contain any entries and does it exist?
  86                                 if (sl)
  87                                 {
  88                                         if (sl->size())
  89                                         {
  90                                                 for (silencelist::iterator i = sl->begin(); i != sl->end(); i++)
  91                                                 {
  92                                                         // search through for the item
  93                                                         irc::string listitem = i->c_str();
  94                                                         if (listitem == mask)
  95                                                         {
  96                                                                 sl->erase(i);
  97                                                                 user->WriteServ("950 %s %s :Removed %s from silence list",user->nick, user->nick, mask.c_str());
  98                                                                 break;
  99                                                         }
 100                                                 }
 101                                         }
 102                                         else
 103                                         {
 104                                                 // tidy up -- if a user's list is empty, theres no use having it
 105                                                 // hanging around in the user record.
 106                                                 DELETE(sl);
 107                                                 user->Shrink("silence_list");
 108                                         }
 109                                 }
 110                         }
 111                         else if (action == '+')
 112                         {
 113                                 // fetch the user's current silence list
 114                                 silencelist* sl;
 115                                 user->GetExt("silence_list", sl);
 116                                 // what, they dont have one??? WE'RE ALL GONNA DIE! ...no, we just create an empty one.
 117                                 if (!sl)
 118                                 {
 119                                         sl = new silencelist;
 120                                         user->Extend(std::string("silence_list"), sl);
 121                                 }
 122                                 for (silencelist::iterator n = sl->begin(); n != sl->end();  n++)
 123                                 {
 124                                         irc::string listitem = n->c_str();
 125                                         if (listitem == mask)
 126                                         {
 127                                                 user->WriteServ("952 %s %s :%s is already on your silence list",user->nick, user->nick, mask.c_str());
 128                                                 return CMD_SUCCESS;
 129                                         }
 130                                 }
 131                                 sl->push_back(mask);
 132                                 user->WriteServ("951 %s %s :Added %s to silence list",user->nick, user->nick, mask.c_str());
 133                                 return CMD_SUCCESS;
 134                         }
 135                 }
 136                 return CMD_SUCCESS;
 137         }
 138 };
 139
 140 class ModuleSilence : public Module
 141 {
 142
 143         cmd_silence* mycommand;
 144  public:
 145
 146         ModuleSilence(InspIRCd* Me)
 147                 : Module::Module(Me)
 148         {
 149
 150                 mycommand = new cmd_silence(ServerInstance);
 151                 ServerInstance->AddCommand(mycommand);
 152         }
 153
 154         void Implements(char* List)
 155         {
 156                 List[I_OnUserQuit] = List[I_On005Numeric] = List[I_OnUserPreNotice] = List[I_OnUserPreMessage] = 1;
 157         }
 158
 159         virtual void OnUserQuit(userrec* user, const std::string &reason)
 160         {
 161                 // when the user quits tidy up any silence list they might have just to keep things tidy
 162                 // and to prevent a HONKING BIG MEMORY LEAK!
 163                 silencelist* sl;
 164                 user->GetExt("silence_list", sl);
 165                 if (sl)
 166                 {
 167                         DELETE(sl);
 168                         user->Shrink("silence_list");
 169                 }
 170         }
 171
 172         virtual void On005Numeric(std::string &output)
 173         {
 174                 // we don't really have a limit...
 175                 output = output + " SILENCE=999";
 176         }
 177
 178         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status)
 179         {
 180                 // im not sure how unreal's silence operates but ours is sensible. It blocks notices and
 181                 // privmsgs from people on the silence list, directed privately at the user.
 182                 // channel messages are unaffected (ever tried to follow the flow of conversation in
 183                 // a channel when you've set an ignore on the two most talkative people?)
 184                 if (target_type == TYPE_USER)
 185                 {
 186                         userrec* u = (userrec*)dest;
 187                         silencelist* sl;
 188                         u->GetExt("silence_list", sl);
 189                         if (sl)
 190                         {
 191                                 for (silencelist::const_iterator c = sl->begin(); c != sl->end(); c++)
 192                                 {
 193                                         if (match(user->GetFullHost(), c->c_str()))
 194                                         {
 195                                                 return 1;
 196                                         }
 197                                 }
 198                         }
 199                 }
 200                 return 0;
 201         }
 202
 203         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status)
 204         {
 205                 return OnUserPreNotice(user,dest,target_type,text,status);
 206         }
 207
 208         virtual ~ModuleSilence()
 209         {
 210         }
 211
 212         virtual Version GetVersion()
 213         {
 214                 return Version(1,0,0,1,VF_VENDOR);
 215         }
 216 };
 217
 218
 219 class ModuleSilenceFactory : public ModuleFactory
 220 {
 221  public:
 222         ModuleSilenceFactory()
 223         {
 224         }
 225
 226         ~ModuleSilenceFactory()
 227         {
 228         }
 229
 230         virtual Module * CreateModule(InspIRCd* Me)
 231         {
 232                 return new ModuleSilence(Me);
 233         }
 234
 235 };
 236
 237
 238 extern "C" void * init_module( void )
 239 {
 240         return new ModuleSilenceFactory;
 241 }
 242