src/modules/m_filter.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 "m_filter.h"
  16
  17 /* $ModDesc: An advanced spam filtering module */
  18 /* $ModDep: m_filter.h */
  19
  20 typedef std::map<std::string,FilterResult*> filter_t;
  21
  22 class ModuleFilter : public FilterBase
  23 {
  24
  25  filter_t filters;
  26
  27  public:
  28         ModuleFilter(InspIRCd* Me)
  29         : FilterBase(Me, "m_filter.so")
  30         {
  31                 OnRehash(NULL,"");
  32
  33         }
  34
  35         virtual ~ModuleFilter()
  36         {
  37         }
  38
  39         virtual FilterResult* FilterMatch(User* user, const std::string &text, int iflags)
  40         {
  41                 for (filter_t::iterator index = filters.begin(); index != filters.end(); index++)
  42                 {
  43
  44                         /* Skip ones that dont apply to us */
  45                         if (!FilterBase::AppliesToMe(user, index->second, iflags))
  46                                 continue;
  47
  48                         if (ServerInstance->MatchText(text,index->first))
  49                         {
  50                                 FilterResult* fr = index->second;
  51                                 if (index != filters.begin())
  52                                 {
  53                                         std::string pat = index->first;
  54                                         filters.erase(index);
  55                                         filters.insert(filters.begin(), std::make_pair(pat,fr));
  56                                 }
  57                                 return fr;
  58                         }
  59                 }
  60                 return NULL;
  61         }
  62
  63         virtual bool DeleteFilter(const std::string &freeform)
  64         {
  65                 if (filters.find(freeform) != filters.end())
  66                 {
  67                         delete (filters.find(freeform))->second;
  68                         filters.erase(filters.find(freeform));
  69                         return true;
  70                 }
  71                 return false;
  72         }
  73
  74         virtual std::pair<bool, std::string> AddFilter(const std::string &freeform, const std::string &type, const std::string &reason, long duration, const std::string &sflags)
  75         {
  76                 if (filters.find(freeform) != filters.end())
  77                 {
  78                         return std::make_pair(false, "Filter already exists");
  79                 }
  80
  81                 FilterResult* x = new FilterResult(freeform, reason, type, duration, sflags);
  82                 filters[freeform] = x;
  83
  84                 return std::make_pair(true, "");
  85         }
  86
  87         virtual void SyncFilters(Module* proto, void* opaque)
  88         {
  89                 for (filter_t::iterator n = filters.begin(); n != filters.end(); n++)
  90                 {
  91                         this->SendFilter(proto, opaque, n->second);
  92                 }
  93         }
  94
  95         virtual void OnRehash(User* user, const std::string &parameter)
  96         {
  97                 ConfigReader* MyConf = new ConfigReader(ServerInstance);
  98
  99                 for (int index = 0; index < MyConf->Enumerate("keyword"); index++)
 100                 {
 101                         this->DeleteFilter(MyConf->ReadValue("keyword","pattern",index));
 102
 103                         std::string pattern = MyConf->ReadValue("keyword","pattern",index);
 104                         std::string reason = MyConf->ReadValue("keyword","reason",index);
 105                         std::string do_action = MyConf->ReadValue("keyword","action",index);
 106                         std::string sflags = MyConf->ReadValue("keyword","flags",index);
 107                         long gline_time = ServerInstance->Duration(MyConf->ReadValue("keyword","duration",index));
 108                         if (do_action.empty())
 109                                 do_action = "none";
 110                         if (sflags.empty())
 111                                 sflags = "*";
 112                         FilterResult* x = new FilterResult(pattern, reason, do_action, gline_time, sflags);
 113                         filters[pattern] = x;
 114                 }
 115                 delete MyConf;
 116                 FilterBase::OnRehash(user, parameter);
 117         }
 118
 119         virtual int OnStats(char symbol, User* user, string_list &results)
 120         {
 121                 if (symbol == 's')
 122                 {
 123                         std::string sn = ServerInstance->Config->ServerName;
 124                         for (filter_t::iterator n = filters.begin(); n != filters.end(); n++)
 125                         {
 126                                 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);
 127                         }
 128                 }
 129                 return 0;
 130         }
 131 };
 132
 133
 134 MODULE_INIT(ModuleFilter)