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 <stdio.h>
  15 #include <string>
  16 #include "users.h"
  17 #include "channels.h"
  18 #include "modules.h"
  19 #include "inspircd.h"
  20 #include "m_filter.h"
  21
  22 /* $ModDesc: An advanced spam filtering module */
  23 /* $ModDep: m_filter.h */
  24
  25 typedef std::map<std::string,FilterResult*> filter_t;
  26
  27 class ModuleFilter : public FilterBase
  28 {
  29
  30  filter_t filters;
  31
  32  public:
  33         ModuleFilter(InspIRCd* Me)
  34         : FilterBase::FilterBase(Me, "m_filter.so")
  35         {
  36                 OnRehash(NULL,"");
  37         }
  38
  39         virtual ~ModuleFilter()
  40         {
  41         }
  42
  43         virtual FilterResult* FilterMatch(const std::string &text)
  44         {
  45                 std::string text2 = text+" ";
  46                 for (filter_t::iterator index = filters.begin(); index != filters.end(); index++)
  47                 {
  48                         if ((ServerInstance->MatchText(text2,index->first)) || (ServerInstance->MatchText(text,index->first)))
  49                         {
  50                                 return index->second;
  51                         }
  52                 }
  53                 return NULL;
  54         }
  55
  56         virtual bool DeleteFilter(const std::string &freeform)
  57         {
  58                 if (filters.find(freeform) != filters.end())
  59                 {
  60                         delete (filters.find(freeform))->second;
  61                         filters.erase(filters.find(freeform));
  62                         return true;
  63                 }
  64                 return false;
  65         }
  66
  67         virtual std::pair<bool, std::string> AddFilter(const std::string &freeform, const std::string &type, const std::string &reason, long duration)
  68         {
  69                 if (filters.find(freeform) != filters.end())
  70                 {
  71                         return std::make_pair(false, "Filter already exists");
  72                 }
  73
  74                 FilterResult* x = new FilterResult;
  75                 x->reason = reason;
  76                 x->action = type;
  77                 x->gline_time = duration;
  78                 x->freeform = freeform;
  79                 filters[freeform] = x;
  80
  81                 return std::make_pair(true, "");
  82         }
  83
  84         virtual void SyncFilters(Module* proto, void* opaque)
  85         {
  86                 for (filter_t::iterator n = filters.begin(); n != filters.end(); n++)
  87                 {
  88                         this->SendFilter(proto, opaque, n->second);
  89                 }
  90         }
  91
  92         virtual void OnRehash(userrec* user, const std::string &parameter)
  93         {
  94                 ConfigReader* MyConf = new ConfigReader(ServerInstance);
  95
  96                 for (int index = 0; index < MyConf->Enumerate("keyword"); index++)
  97                 {
  98                         this->DeleteFilter(MyConf->ReadValue("keyword","pattern",index));
  99
 100                         std::string pattern = MyConf->ReadValue("keyword","pattern",index);
 101                         std::string reason = MyConf->ReadValue("keyword","reason",index);
 102                         std::string do_action = MyConf->ReadValue("keyword","action",index);
 103                         long gline_time = ServerInstance->Duration(MyConf->ReadValue("keyword","duration",index).c_str());
 104                         if (do_action == "")
 105                                 do_action = "none";
 106                         FilterResult* x = new FilterResult;
 107                         x->reason = reason;
 108                         x->action = do_action;
 109                         x->gline_time = gline_time;
 110                         x->freeform = pattern;
 111                         filters[pattern] = x;
 112                 }
 113                 DELETE(MyConf);
 114         }
 115
 116         virtual int OnStats(char symbol, userrec* user, string_list &results)
 117         {
 118                 if (symbol == 's')
 119                 {
 120                         std::string sn = ServerInstance->Config->ServerName;
 121                         for (filter_t::iterator n = filters.begin(); n != filters.end(); n++)
 122                         {
 123                                 results.push_back(sn+" 223 "+user->nick+" :GLOB:"+n->second->freeform+" "+n->second->action+" "+ConvToStr(n->second->gline_time)+" :"+n->second->reason);
 124                         }
 125                 }
 126                 return 0;
 127         }
 128 };
 129
 130 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 131
 132 class ModuleFilterFactory : public ModuleFactory
 133 {
 134  public:
 135         ModuleFilterFactory()
 136         {
 137         }
 138
 139         ~ModuleFilterFactory()
 140         {
 141         }
 142
 143         virtual Module * CreateModule(InspIRCd* Me)
 144         {
 145                 return new ModuleFilter(Me);
 146         }
 147
 148 };
 149
 150
 151 extern "C" void * init_module( void )
 152 {
 153         return new ModuleFilterFactory;
 154 }
 155