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