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(const std::string &text)
  42         {
  43                 for (filter_t::iterator index = filters.begin(); index != filters.end(); index++)
  44                 {
  45                         if (ServerInstance->MatchText(text,index->first))
  46                         {
  47                                 FilterResult* fr = index->second;
  48                                 if (index != filters.begin())
  49                                 {
  50                                         std::string pat = index->first;
  51                                         filters.erase(index);
  52                                         filters.insert(filters.begin(), std::make_pair(pat,fr));
  53                                 }
  54                                 return fr;
  55                         }
  56                 }
  57                 return NULL;
  58         }
  59
  60         virtual bool DeleteFilter(const std::string &freeform)
  61         {
  62                 if (filters.find(freeform) != filters.end())
  63                 {
  64                         delete (filters.find(freeform))->second;
  65                         filters.erase(filters.find(freeform));
  66                         return true;
  67                 }
  68                 return false;
  69         }
  70
  71         virtual std::pair<bool, std::string> AddFilter(const std::string &freeform, const std::string &type, const std::string &reason, long duration, bool operexclusion)
  72         {
  73                 if (filters.find(freeform) != filters.end())
  74                 {
  75                         return std::make_pair(false, "Filter already exists");
  76                 }
  77
  78                 FilterResult* x = new FilterResult;
  79                 x->reason = reason;
  80                 x->action = type;
  81                 x->gline_time = duration;
  82                 x->freeform = freeform;
  83                 x->opers_exempt = operexclusion;
  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                         long gline_time = ServerInstance->Duration(MyConf->ReadValue("keyword","duration",index).c_str());
 109                         if (do_action == "")
 110                                 do_action = "none";
 111                         FilterResult* x = new FilterResult;
 112                         x->reason = reason;
 113                         x->action = do_action;
 114                         x->gline_time = gline_time;
 115                         x->freeform = pattern;
 116                         filters[pattern] = x;
 117                 }
 118                 DELETE(MyConf);
 119         }
 120
 121         virtual int OnStats(char symbol, userrec* user, string_list &results)
 122         {
 123                 if (symbol == 's')
 124                 {
 125                         std::string sn = ServerInstance->Config->ServerName;
 126                         for (filter_t::iterator n = filters.begin(); n != filters.end(); n++)
 127                         {
 128                                 results.push_back(sn+" 223 "+user->nick+" :GLOB:"+n->second->freeform+" "+n->second->action+" "+ConvToStr(n->second->gline_time)+" :"+n->second->reason);
 129                         }
 130                 }
 131                 return 0;
 132         }
 133 };
 134
 135 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 136
 137 class ModuleFilterFactory : public ModuleFactory
 138 {
 139  public:
 140         ModuleFilterFactory()
 141         {
 142         }
 143
 144         ~ModuleFilterFactory()
 145         {
 146         }
 147
 148         virtual Module * CreateModule(InspIRCd* Me)
 149         {
 150                 return new ModuleFilter(Me);
 151         }
 152
 153 };
 154
 155
 156 extern "C" DllExport void * init_module( void )
 157 {
 158         return new ModuleFilterFactory;
 159 }
 160