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