src/modules/m_silence.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 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 "wildcard.h"
  16
  17 /* $ModDesc: Provides support for the /SILENCE command */
  18
  19 // This typedef holds a silence list. Each user may or may not have a
  20 // silencelist, if a silence list is empty for a user, he/she does not
  21 // have one of these structures associated with their user record.
  22 typedef std::map<irc::string, time_t> silencelist;
  23
  24 class CommandSilence : public Command
  25 {
  26         unsigned int& maxsilence;
  27  public:
  28         CommandSilence (InspIRCd* Instance, unsigned int &max) : Command(Instance,"SILENCE", 0, 0), maxsilence(max)
  29         {
  30                 this->source = "m_silence.so";
  31                 syntax = "{[+|-]<mask>}";
  32                 TRANSLATE2(TR_TEXT, TR_END);
  33         }
  34
  35         CmdResult Handle (const char** parameters, int pcnt, User *user)
  36         {
  37                 if (!pcnt)
  38                 {
  39                         // no parameters, show the current silence list.
  40                         // Use Extensible::GetExt to fetch the silence list
  41                         silencelist* sl;
  42                         user->GetExt("silence_list", sl);
  43                         // if the user has a silence list associated with their user record, show it
  44                         if (sl)
  45                         {
  46                                 for (silencelist::const_iterator c = sl->begin(); c != sl->end(); c++)
  47                                 {
  48                                         user->WriteServ("271 %s %s %s :%lu",user->nick, user->nick, c->first.c_str(), (unsigned long)c->second);
  49                                 }
  50                         }
  51                         user->WriteServ("272 %s :End of Silence List",user->nick);
  52
  53                         return CMD_SUCCESS;
  54                 }
  55                 else if (pcnt > 0)
  56                 {
  57                         // one or more parameters, add or delete entry from the list (only the first parameter is used)
  58                         std::string mask = parameters[0] + 1;
  59                         char action = *parameters[0];
  60
  61                         if (!mask.length())
  62                         {
  63                                 // 'SILENCE +' or 'SILENCE -', assume *!*@*
  64                                 mask = "*!*@*";
  65                         }
  66
  67                         ModeParser::CleanMask(mask);
  68
  69                         if (action == '-')
  70                         {
  71                                 // fetch their silence list
  72                                 silencelist* sl;
  73                                 user->GetExt("silence_list", sl);
  74                                 // does it contain any entries and does it exist?
  75                                 if (sl)
  76                                 {
  77                                         silencelist::iterator i = sl->find(mask.c_str());
  78                                         if (i != sl->end())
  79                                         {
  80                                                 sl->erase(i);
  81                                                 user->WriteServ("950 %s %s :Removed %s from silence list",user->nick, user->nick, mask.c_str());
  82                                                 if (!sl->size())
  83                                                 {
  84                                                         // tidy up -- if a user's list is empty, theres no use having it
  85                                                         // hanging around in the user record.
  86                                                         delete sl;
  87                                                         user->Shrink("silence_list");
  88                                                 }
  89                                         }
  90                                         else
  91                                                 user->WriteServ("952 %s %s :%s does not exist on your silence list",user->nick, user->nick, mask.c_str());
  92                                 }
  93                         }
  94                         else if (action == '+')
  95                         {
  96                                 // fetch the user's current silence list
  97                                 silencelist* sl;
  98                                 user->GetExt("silence_list", sl);
  99                                 // what, they dont have one??? WE'RE ALL GONNA DIE! ...no, we just create an empty one.
 100                                 if (!sl)
 101                                 {
 102                                         sl = new silencelist;
 103                                         user->Extend("silence_list", sl);
 104                                 }
 105                                 silencelist::iterator n = sl->find(mask.c_str());
 106                                 if (n != sl->end())
 107                                 {
 108                                         user->WriteServ("952 %s %s :%s is already on your silence list",user->nick, user->nick, mask.c_str());
 109                                         return CMD_FAILURE;
 110                                 }
 111                                 if (sl->size() >= maxsilence)
 112                                 {
 113                                         user->WriteServ("952 %s %s :Your silence list is full",user->nick, user->nick, mask.c_str());
 114                                         return CMD_FAILURE;
 115                                 }
 116                                 sl->insert(std::make_pair<irc::string, time_t>(mask.c_str(), ServerInstance->Time()));
 117                                 user->WriteServ("951 %s %s :Added %s to silence list",user->nick, user->nick, mask.c_str());
 118                                 return CMD_SUCCESS;
 119                         }
 120                 }
 121                 return CMD_SUCCESS;
 122         }
 123 };
 124
 125 class ModuleSilence : public Module
 126 {
 127
 128         CommandSilence* mycommand;
 129         unsigned int maxsilence;
 130  public:
 131
 132         ModuleSilence(InspIRCd* Me)
 133                 : Module(Me), maxsilence(32)
 134         {
 135                 OnRehash(NULL, "");
 136                 mycommand = new CommandSilence(ServerInstance, maxsilence);
 137                 ServerInstance->AddCommand(mycommand);
 138                 Implementation eventlist[] = { I_OnRehash, I_OnUserQuit, I_On005Numeric, I_OnUserPreNotice, I_OnUserPreMessage };
 139                 ServerInstance->Modules->Attach(eventlist, this, 5);
 140         }
 141
 142
 143         virtual void OnRehash(User* user, const std::string &parameter)
 144         {
 145                 ConfigReader Conf(ServerInstance);
 146                 maxsilence = Conf.ReadInteger("silence", "maxentries", 0, true);
 147                 if (!maxsilence)
 148                         maxsilence = 32;
 149         }
 150
 151         virtual void OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 152         {
 153                 // when the user quits tidy up any silence list they might have just to keep things tidy
 154                 // and to prevent a HONKING BIG MEMORY LEAK!
 155                 silencelist* sl;
 156                 user->GetExt("silence_list", sl);
 157                 if (sl)
 158                 {
 159                         delete sl;
 160                         user->Shrink("silence_list");
 161                 }
 162         }
 163
 164         virtual void On005Numeric(std::string &output)
 165         {
 166                 // we don't really have a limit...
 167                 output = output + " SILENCE=" + ConvToStr(maxsilence);
 168         }
 169
 170         virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 171         {
 172                 // im not sure how unreal's silence operates but ours is sensible. It blocks notices and
 173                 // privmsgs from people on the silence list, directed privately at the user.
 174                 // channel messages are unaffected (ever tried to follow the flow of conversation in
 175                 // a channel when you've set an ignore on the two most talkative people?)
 176                 if ((target_type == TYPE_USER) && (IS_LOCAL(user)))
 177                 {
 178                         User* u = (User*)dest;
 179                         silencelist* sl;
 180                         u->GetExt("silence_list", sl);
 181                         if (sl)
 182                         {
 183                                 for (silencelist::const_iterator c = sl->begin(); c != sl->end(); c++)
 184                                 {
 185                                         if (match(user->GetFullHost(), c->first.c_str()))
 186                                         {
 187                                                 return 1;
 188                                         }
 189                                 }
 190                         }
 191                 }
 192                 return 0;
 193         }
 194
 195         virtual int OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 196         {
 197                 return OnUserPreNotice(user,dest,target_type,text,status,exempt_list);
 198         }
 199
 200         virtual ~ModuleSilence()
 201         {
 202         }
 203
 204         virtual Version GetVersion()
 205         {
 206                 return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
 207         }
 208 };
 209
 210 MODULE_INIT(ModuleSilence)