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 <stdio.h>
  15 #include <string>
  16 #include <vector>
  17 #include "users.h"
  18 #include "channels.h"
  19 #include "modules.h"
  20 #include "hashcomp.h"
  21 #include "inspircd.h"
  22 #include "wildcard.h"
  23
  24 /* $ModDesc: Provides support for the /SILENCE command */
  25
  26 // This typedef holds a silence list. Each user may or may not have a
  27 // silencelist, if a silence list is empty for a user, he/she does not
  28 // have one of these structures associated with their user record.
  29 typedef std::map<irc::string, time_t> silencelist;
  30
  31 class cmd_silence : public command_t
  32 {
  33         unsigned int& maxsilence;
  34  public:
  35         cmd_silence (InspIRCd* Instance, unsigned int &max) : command_t(Instance,"SILENCE", 0, 0), maxsilence(max)
  36         {
  37                 this->source = "m_silence.so";
  38                 syntax = "{[+|-]<mask>}";
  39         }
  40
  41         CmdResult Handle (const char** parameters, int pcnt, userrec *user)
  42         {
  43                 if (!pcnt)
  44                 {
  45                         // no parameters, show the current silence list.
  46                         // Use Extensible::GetExt to fetch the silence list
  47                         silencelist* sl;
  48                         user->GetExt("silence_list", sl);
  49                         // if the user has a silence list associated with their user record, show it
  50                         if (sl)
  51                         {
  52                                 for (silencelist::const_iterator c = sl->begin(); c != sl->end(); c++)
  53                                 {
  54                                         user->WriteServ("271 %s %s %s :%lu",user->nick, user->nick, c->first.c_str(), (unsigned long)c->second);
  55                                 }
  56                         }
  57                         user->WriteServ("272 %s :End of Silence List",user->nick);
  58
  59                         return CMD_SUCCESS;
  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                         std::string mask = parameters[0] + 1;
  65                         char action = *parameters[0];
  66
  67                         if (!mask.length())
  68                         {
  69                                 // 'SILENCE +' or 'SILENCE -', assume *!*@*
  70                                 mask = "*!*@*";
  71                         }
  72
  73                         ModeParser::CleanMask(mask);
  74
  75                         if (action == '-')
  76                         {
  77                                 // fetch their silence list
  78                                 silencelist* sl;
  79                                 user->GetExt("silence_list", sl);
  80                                 // does it contain any entries and does it exist?
  81                                 if (sl)
  82                                 {
  83                                         silencelist::iterator i = sl->find(mask.c_str());
  84                                         if (i != sl->end())
  85                                         {
  86                                                 sl->erase(i);
  87                                                 user->WriteServ("950 %s %s :Removed %s from silence list",user->nick, user->nick, mask.c_str());
  88                                                 if (!sl->size())
  89                                                 {
  90                                                         // tidy up -- if a user's list is empty, theres no use having it
  91                                                         // hanging around in the user record.
  92                                                         DELETE(sl);
  93                                                         user->Shrink("silence_list");
  94                                                 }
  95                                         }
  96                                         else
  97                                                 user->WriteServ("952 %s %s :%s does not exist on your silence list",user->nick, user->nick, mask.c_str());
  98                                 }
  99                         }
 100                         else if (action == '+')
 101                         {
 102                                 // fetch the user's current silence list
 103                                 silencelist* sl;
 104                                 user->GetExt("silence_list", sl);
 105                                 // what, they dont have one??? WE'RE ALL GONNA DIE! ...no, we just create an empty one.
 106                                 if (!sl)
 107                                 {
 108                                         sl = new silencelist;
 109                                         user->Extend("silence_list", sl);
 110                                 }
 111                                 silencelist::iterator n = sl->find(mask.c_str());
 112                                 if (n != sl->end())
 113                                 {
 114                                         user->WriteServ("952 %s %s :%s is already on your silence list",user->nick, user->nick, mask.c_str());
 115                                         return CMD_FAILURE;
 116                                 }
 117                                 if (sl->size() >= maxsilence)
 118                                 {
 119                                         user->WriteServ("952 %s %s :Your silence list is full",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         unsigned int maxsilence;
 136  public:
 137
 138         ModuleSilence(InspIRCd* Me)
 139                 : Module(Me), maxsilence(32)
 140         {
 141                 OnRehash(NULL, "");
 142                 mycommand = new cmd_silence(ServerInstance, maxsilence);
 143                 ServerInstance->AddCommand(mycommand);
 144         }
 145
 146         void Implements(char* List)
 147         {
 148                 List[I_OnRehash] = List[I_OnUserQuit] = List[I_On005Numeric] = List[I_OnUserPreNotice] = List[I_OnUserPreMessage] = 1;
 149         }
 150
 151         virtual void OnRehash(userrec* user, const std::string &parameter)
 152         {
 153                 ConfigReader Conf(ServerInstance);
 154                 maxsilence = Conf.ReadInteger("silence", "maxentries", 0, true);
 155                 if (!maxsilence)
 156                         maxsilence = 32;
 157         }
 158
 159         virtual void OnUserQuit(userrec* user, const std::string &reason, const std::string &oper_message)
 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=" + ConvToStr(maxsilence);
 176         }
 177
 178         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
 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) && (IS_LOCAL(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->first.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, CUList &exempt_list)
 204         {
 205                 return OnUserPreNotice(user,dest,target_type,text,status,exempt_list);
 206         }
 207
 208         virtual ~ModuleSilence()
 209         {
 210         }
 211
 212         virtual Version GetVersion()
 213         {
 214                 return Version(1,1,0,1,VF_VENDOR,API_VERSION);
 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" DllExport void * init_module( void )
 239 {
 240         return new ModuleSilenceFactory;
 241 }
 242