src/modules/m_silence.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 #include "hashcomp.h"
  19 #include "wildcard.h"
  20
  21 /* $ModDesc: Provides support for the /SILENCE command */
  22
  23 // This typedef holds a silence list. Each user may or may not have a
  24 // silencelist, if a silence list is empty for a user, he/she does not
  25 // have one of these structures associated with their user record.
  26 typedef std::map<irc::string, time_t> silencelist;
  27
  28 class cmd_silence : public command_t
  29 {
  30         unsigned int& maxsilence;
  31  public:
  32         cmd_silence (InspIRCd* Instance, unsigned int &max) : command_t(Instance,"SILENCE", 0, 0), maxsilence(max)
  33         {
  34                 this->source = "m_silence.so";
  35                 syntax = "{[+|-]<mask>}";
  36         }
  37
  38         CmdResult Handle (const char** parameters, int pcnt, userrec *user)
  39         {
  40                 if (!pcnt)
  41                 {
  42                         // no parameters, show the current silence list.
  43                         // Use Extensible::GetExt to fetch the silence list
  44                         silencelist* sl;
  45                         user->GetExt("silence_list", sl);
  46                         // if the user has a silence list associated with their user record, show it
  47                         if (sl)
  48                         {
  49                                 for (silencelist::const_iterator c = sl->begin(); c != sl->end(); c++)
  50                                 {
  51                                         user->WriteServ("271 %s %s %s :%lu",user->nick, user->nick, c->first.c_str(), (unsigned long)c->second);
  52                                 }
  53                         }
  54                         user->WriteServ("272 %s :End of Silence List",user->nick);
  55
  56                         return CMD_SUCCESS;
  57                 }
  58                 else if (pcnt > 0)
  59                 {
  60                         // one or more parameters, add or delete entry from the list (only the first parameter is used)
  61                         std::string mask = parameters[0] + 1;
  62                         char action = *parameters[0];
  63
  64                         if (!mask.length())
  65                         {
  66                                 // 'SILENCE +' or 'SILENCE -', assume *!*@*
  67                                 mask = "*!*@*";
  68                         }
  69
  70                         ModeParser::CleanMask(mask);
  71
  72                         if (action == '-')
  73                         {
  74                                 // fetch their silence list
  75                                 silencelist* sl;
  76                                 user->GetExt("silence_list", sl);
  77                                 // does it contain any entries and does it exist?
  78                                 if (sl)
  79                                 {
  80                                         silencelist::iterator i = sl->find(mask.c_str());
  81                                         if (i != sl->end())
  82                                         {
  83                                                 sl->erase(i);
  84                                                 user->WriteServ("950 %s %s :Removed %s from silence list",user->nick, user->nick, mask.c_str());
  85                                                 if (!sl->size())
  86                                                 {
  87                                                         // tidy up -- if a user's list is empty, theres no use having it
  88                                                         // hanging around in the user record.
  89                                                         DELETE(sl);
  90                                                         user->Shrink("silence_list");
  91                                                 }
  92                                         }
  93                                         else
  94                                                 user->WriteServ("952 %s %s :%s does not exist on your silence list",user->nick, user->nick, mask.c_str());
  95                                 }
  96                         }
  97                         else if (action == '+')
  98                         {
  99                                 // fetch the user's current silence list
 100                                 silencelist* sl;
 101                                 user->GetExt("silence_list", sl);
 102                                 // what, they dont have one??? WE'RE ALL GONNA DIE! ...no, we just create an empty one.
 103                                 if (!sl)
 104                                 {
 105                                         sl = new silencelist;
 106                                         user->Extend("silence_list", sl);
 107                                 }
 108                                 silencelist::iterator n = sl->find(mask.c_str());
 109                                 if (n != sl->end())
 110                                 {
 111                                         user->WriteServ("952 %s %s :%s is already on your silence list",user->nick, user->nick, mask.c_str());
 112                                         return CMD_FAILURE;
 113                                 }
 114                                 if (sl->size() >= maxsilence)
 115                                 {
 116                                         user->WriteServ("952 %s %s :Your silence list is full",user->nick, user->nick, mask.c_str());
 117                                         return CMD_FAILURE;
 118                                 }
 119                                 sl->insert(std::make_pair<irc::string, time_t>(mask.c_str(), ServerInstance->Time()));
 120                                 user->WriteServ("951 %s %s :Added %s to silence list",user->nick, user->nick, mask.c_str());
 121                                 return CMD_SUCCESS;
 122                         }
 123                 }
 124                 return CMD_SUCCESS;
 125         }
 126 };
 127
 128 class ModuleSilence : public Module
 129 {
 130
 131         cmd_silence* mycommand;
 132         unsigned int maxsilence;
 133  public:
 134
 135         ModuleSilence(InspIRCd* Me)
 136                 : Module(Me), maxsilence(32)
 137         {
 138                 OnRehash(NULL, "");
 139                 mycommand = new cmd_silence(ServerInstance, maxsilence);
 140                 ServerInstance->AddCommand(mycommand);
 141         }
 142
 143         void Implements(char* List)
 144         {
 145                 List[I_OnRehash] = List[I_OnUserQuit] = List[I_On005Numeric] = List[I_OnUserPreNotice] = List[I_OnUserPreMessage] = 1;
 146         }
 147
 148         virtual void OnRehash(userrec* user, const std::string &parameter)
 149         {
 150                 ConfigReader Conf(ServerInstance);
 151                 maxsilence = Conf.ReadInteger("silence", "maxentries", 0, true);
 152                 if (!maxsilence)
 153                         maxsilence = 32;
 154         }
 155
 156         virtual void OnUserQuit(userrec* user, const std::string &reason, const std::string &oper_message)
 157         {
 158                 // when the user quits tidy up any silence list they might have just to keep things tidy
 159                 // and to prevent a HONKING BIG MEMORY LEAK!
 160                 silencelist* sl;
 161                 user->GetExt("silence_list", sl);
 162                 if (sl)
 163                 {
 164                         DELETE(sl);
 165                         user->Shrink("silence_list");
 166                 }
 167         }
 168
 169         virtual void On005Numeric(std::string &output)
 170         {
 171                 // we don't really have a limit...
 172                 output = output + " SILENCE=" + ConvToStr(maxsilence);
 173         }
 174
 175         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 176         {
 177                 // im not sure how unreal's silence operates but ours is sensible. It blocks notices and
 178                 // privmsgs from people on the silence list, directed privately at the user.
 179                 // channel messages are unaffected (ever tried to follow the flow of conversation in
 180                 // a channel when you've set an ignore on the two most talkative people?)
 181                 if ((target_type == TYPE_USER) && (IS_LOCAL(user)))
 182                 {
 183                         userrec* u = (userrec*)dest;
 184                         silencelist* sl;
 185                         u->GetExt("silence_list", sl);
 186                         if (sl)
 187                         {
 188                                 for (silencelist::const_iterator c = sl->begin(); c != sl->end(); c++)
 189                                 {
 190                                         if (match(user->GetFullHost(), c->first.c_str()))
 191                                         {
 192                                                 return 1;
 193                                         }
 194                                 }
 195                         }
 196                 }
 197                 return 0;
 198         }
 199
 200         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 201         {
 202                 return OnUserPreNotice(user,dest,target_type,text,status,exempt_list);
 203         }
 204
 205         virtual ~ModuleSilence()
 206         {
 207         }
 208
 209         virtual Version GetVersion()
 210         {
 211                 return Version(1,1,0,1,VF_VENDOR,API_VERSION);
 212         }
 213 };
 214
 215 MODULE_INIT(ModuleSilence)