src/modules/m_filter.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 "m_filter.h"
  19
  20 /* $ModDesc: An advanced spam filtering module */
  21 /* $ModDep: m_filter.h */
  22
  23 typedef std::map<std::string,FilterResult*> filter_t;
  24
  25 class ModuleFilter : public FilterBase
  26 {
  27
  28  filter_t filters;
  29
  30  public:
  31         ModuleFilter(InspIRCd* Me)
  32         : FilterBase(Me, "m_filter.so")
  33         {
  34                 OnRehash(NULL,"");
  35         }
  36
  37         virtual ~ModuleFilter()
  38         {
  39         }
  40
  41         virtual FilterResult* FilterMatch(userrec* user, const std::string &text, int flags)
  42         {
  43                 for (filter_t::iterator index = filters.begin(); index != filters.end(); index++)
  44                 {
  45
  46                         /* Skip ones that dont apply to us */
  47                         if (!FilterBase::AppliesToMe(user, index->second, flags))
  48                                 continue;
  49
  50                         if (ServerInstance->MatchText(text,index->first))
  51                         {
  52                                 FilterResult* fr = index->second;
  53                                 if (index != filters.begin())
  54                                 {
  55                                         std::string pat = index->first;
  56                                         filters.erase(index);
  57                                         filters.insert(filters.begin(), std::make_pair(pat,fr));
  58                                 }
  59                                 return fr;
  60                         }
  61                 }
  62                 return NULL;
  63         }
  64
  65         virtual bool DeleteFilter(const std::string &freeform)
  66         {
  67                 if (filters.find(freeform) != filters.end())
  68                 {
  69                         delete (filters.find(freeform))->second;
  70                         filters.erase(filters.find(freeform));
  71                         return true;
  72                 }
  73                 return false;
  74         }
  75
  76         virtual std::pair<bool, std::string> AddFilter(const std::string &freeform, const std::string &type, const std::string &reason, long duration, const std::string &flags)
  77         {
  78                 if (filters.find(freeform) != filters.end())
  79                 {
  80                         return std::make_pair(false, "Filter already exists");
  81                 }
  82
  83                 FilterResult* x = new FilterResult(freeform, reason, type, duration, flags);
  84                 filters[freeform] = x;
  85
  86                 return std::make_pair(true, "");
  87         }
  88
  89         virtual void SyncFilters(Module* proto, void* opaque)
  90         {
  91                 for (filter_t::iterator n = filters.begin(); n != filters.end(); n++)
  92                 {
  93                         this->SendFilter(proto, opaque, n->second);
  94                 }
  95         }
  96
  97         virtual void OnRehash(userrec* user, const std::string &parameter)
  98         {
  99                 ConfigReader* MyConf = new ConfigReader(ServerInstance);
 100
 101                 for (int index = 0; index < MyConf->Enumerate("keyword"); index++)
 102                 {
 103                         this->DeleteFilter(MyConf->ReadValue("keyword","pattern",index));
 104
 105                         std::string pattern = MyConf->ReadValue("keyword","pattern",index);
 106                         std::string reason = MyConf->ReadValue("keyword","reason",index);
 107                         std::string do_action = MyConf->ReadValue("keyword","action",index);
 108                         std::string flags = MyConf->ReadValue("keyword","flags",index);
 109                         long gline_time = ServerInstance->Duration(MyConf->ReadValue("keyword","duration",index));
 110                         if (do_action.empty())
 111                                 do_action = "none";
 112                         if (flags.empty())
 113                                 flags = "*";
 114                         FilterResult* x = new FilterResult(pattern, reason, do_action, gline_time, flags);
 115                         filters[pattern] = x;
 116                 }
 117                 DELETE(MyConf);
 118         }
 119
 120         virtual int OnStats(char symbol, userrec* user, string_list &results)
 121         {
 122                 if (symbol == 's')
 123                 {
 124                         std::string sn = ServerInstance->Config->ServerName;
 125                         for (filter_t::iterator n = filters.begin(); n != filters.end(); n++)
 126                         {
 127                                 results.push_back(sn+" 223 "+user->nick+" :GLOB:"+n->second->freeform+" "+n->second->flags+" "+n->second->action+" "+ConvToStr(n->second->gline_time)+" :"+n->second->reason);
 128                         }
 129                 }
 130                 return 0;
 131         }
 132 };
 133
 134
 135 MODULE_INIT(ModuleFilter)