src/modules/m_chanfilter.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 #include <stdio.h>
  18 #include <string>
  19 #include <vector>
  20 #include "users.h"
  21 #include "channels.h"
  22 #include "modules.h"
  23
  24 /* $ModDesc: Provides channel-specific censor lists (like mode +G but varies from channel to channel) */
  25
  26 typedef std::vector<std::string> SpamList;
  27
  28 class ModuleChanFilter : public Module
  29 {
  30         Server *Srv;
  31         ConfigReader *Conf;
  32         long MaxEntries;
  33
  34  public:
  35
  36         ModuleChanFilter()
  37         {
  38                 Srv = new Server;
  39                 Conf = new ConfigReader;
  40                 Srv->AddExtendedListMode('g');
  41                 MaxEntries = Conf->ReadInteger("chanfilter","maxsize",0,true);
  42         }
  43
  44         virtual void On005Numeric(std::string &output)
  45         {
  46                 std::stringstream line(output);
  47                 std::string temp1, temp2;
  48                 while (!line.eof())
  49                 {
  50                         line >> temp1;
  51                         if (temp1.substr(0,10) == "CHANMODES=")
  52                         {
  53                                 // append the chanmode to the end
  54                                 temp1 = temp1.substr(10,temp1.length());
  55                                 temp1 = "CHANMODES=g" + temp1;
  56                         }
  57                         temp2 = temp2 + temp1 + " ";
  58                 }
  59                 if (temp2.length())
  60                         output = temp2.substr(0,temp2.length()-1);
  61         }
  62
  63         virtual void OnUserPart(userrec* user, chanrec* channel)
  64         {
  65                 // when the last user parts, delete the list
  66                 if (Srv->CountUsers(channel) == 1)
  67                 {
  68                         SpamList* spamlist = (SpamList*)channel->GetExt("spam_list");
  69                         if (spamlist)
  70                         {
  71                                 channel->Shrink("spam_list");
  72                                 delete spamlist;
  73                         }
  74                 }
  75         }
  76
  77         virtual void OnRehash()
  78         {
  79                 delete Conf;
  80                 Conf = new ConfigReader;
  81                 // re-read our config options on a rehash
  82                 MaxEntries = Conf->ReadInteger("chanfilter","maxsize",0,true);
  83         }
  84
  85         virtual int ProcessMessages(userrec* user,chanrec* chan,std::string &text)
  86         {
  87                 SpamList* spamlist = (SpamList*)chan->GetExt("spam_list");
  88                 if (spamlist)
  89                 {
  90                         for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++)
  91                         {
  92                                 if (strcasestr(text.c_str(),i->c_str()))
  93                                 {
  94                                         WriteServ(user->fd,"936 %s %s :Your message contained a censored word, and was blocked",user->nick, chan->name);
  95                                         return 1;
  96                                 }
  97                         }
  98                 }
  99                 return 0;
 100         }
 101
 102         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
 103         {
 104                 if (target_type == TYPE_CHANNEL)
 105                 {
 106                         return ProcessMessages(user,(chanrec*)dest,text);
 107                 }
 108                 else return 0;
 109         }
 110
 111         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 112         {
 113                 if (target_type == TYPE_CHANNEL)
 114                 {
 115                         return ProcessMessages(user,(chanrec*)dest,text);
 116                 }
 117                 else return 0;
 118         }
 119
 120         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
 121         {
 122                 if ((modechar == 'g') && (type == MT_CHANNEL))
 123                 {
 124                         chanrec* chan = (chanrec*)target;
 125                         std::string param = params[0];
 126
 127                         if (mode_on)
 128                         {
 129                                 SpamList* spamlist = (SpamList*)chan->GetExt("spam_list");
 130                                 if (!spamlist)
 131                                 {
 132                                         spamlist = new SpamList;
 133                                         chan->Extend("spam_list",(char*)spamlist);
 134                                 }
 135                                 if (spamlist->size() < MaxEntries)
 136                                 {
 137                                         for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++)
 138                                         {
 139                                                 if (*i == params[0])
 140                                                 {
 141                                                         WriteServ(user->fd,"937 %s %s :The word %s is already on the spamfilter list",user->nick, chan->name,params[0].c_str());
 142                                                         return -1;
 143                                                 }
 144                                         }
 145                                         spamlist->push_back(params[0]);
 146                                         return 1;
 147                                 }
 148                                 WriteServ(user->fd,"939 %s %s :Channel spamfilter list is full",user->nick, chan->name);
 149                                 return -1;
 150                         }
 151                         else
 152                         {
 153                                 SpamList* spamlist = (SpamList*)chan->GetExt("spam_list");
 154                                 if (spamlist)
 155                                 {
 156                                         for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++)
 157                                         {
 158                                                 if (*i == params[0])
 159                                                 {
 160                                                         spamlist->erase(i);
 161                                                         return 1;
 162                                                 }
 163                                         }
 164                                 }
 165                                 WriteServ(user->fd,"938 %s %s :No such spamfilter word is set",user->nick, chan->name);
 166                                 return -1;
 167                         }
 168                         return -1;
 169                 }
 170                 return 0;
 171         }
 172
 173         virtual void OnSendList(userrec* user, chanrec* channel, char mode)
 174         {
 175                 if (mode == 'g')
 176                 {
 177                         SpamList* spamlist = (SpamList*)channel->GetExt("spam_list");
 178                         if (spamlist)
 179                         {
 180                                 for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++)
 181                                 {
 182                                         WriteServ(user->fd,"941 %s %s %s",user->nick, channel->name,i->c_str());
 183                                 }
 184                         }
 185                         WriteServ(user->fd,"940 %s %s :End of channel spamfilter list",user->nick, channel->name);
 186                 }
 187         }
 188
 189         virtual ~ModuleChanFilter()
 190         {
 191                 delete Conf;
 192                 delete Srv;
 193         }
 194
 195         virtual Version GetVersion()
 196         {
 197                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
 198         }
 199
 200         virtual string_list OnChannelSync(chanrec* chan)
 201         {
 202                 SpamList* spamlist = (SpamList*)chan->GetExt("spam_list");
 203                 string_list commands;
 204                 if (spamlist)
 205                 {
 206                         for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++)
 207                         {
 208                                 commands.push_back("M "+std::string(chan->name)+" +g "+*i);
 209                         }
 210                 }
 211                 return commands;
 212         }
 213
 214 };
 215
 216
 217 class ModuleChanFilterFactory : public ModuleFactory
 218 {
 219  public:
 220         ModuleChanFilterFactory()
 221         {
 222         }
 223
 224         ~ModuleChanFilterFactory()
 225         {
 226         }
 227
 228         virtual Module * CreateModule()
 229         {
 230                 return new ModuleChanFilter;
 231         }
 232
 233 };
 234
 235
 236 extern "C" void * init_module( void )
 237 {
 238         return new ModuleChanFilterFactory;
 239 }
 240