src/modules/m_censor.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 "users.h"
  20 #include "channels.h"
  21 #include "modules.h"
  22
  23 /* $ModDesc: Provides user and channel +G mode */
  24
  25 class ModuleCensor : public Module
  26 {
  27  Server *Srv;
  28  ConfigReader *Conf, *MyConf;
  29
  30  public:
  31         ModuleCensor()
  32         {
  33                 // read the configuration file on startup.
  34                 // it is perfectly valid to set <censor file> to the value of the
  35                 // main config file, then append your <badword> tags to the bottom
  36                 // of the main config... but rather messy. That's why the capability
  37                 // of using a seperate config file is provided.
  38                 Srv = new Server;
  39                 Conf = new ConfigReader;
  40                 std::string Censorfile = Conf->ReadValue("censor","file",0);
  41                 MyConf = new ConfigReader(Censorfile);
  42                 if ((Censorfile == "") || (!MyConf->Verify()))
  43                 {
  44                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
  45                         exit(0);
  46                 }
  47                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
  48                 Srv->AddExtendedMode('G',MT_CHANNEL,false,0,0);
  49                 Srv->AddExtendedMode('G',MT_CLIENT,false,0,0);
  50         }
  51
  52         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
  53         {
  54                 // check if this is our mode character...
  55                 if (modechar == 'G')
  56                 {
  57                         return 1;
  58                 }
  59                 else
  60                 {
  61                         return 0;
  62                 }
  63         }
  64
  65         virtual ~ModuleCensor()
  66         {
  67                 delete Srv;
  68                 delete MyConf;
  69                 delete Conf;
  70         }
  71
  72         virtual void ReplaceLine(std::string &text,std::string pattern, std::string replace)
  73         {
  74                 if ((pattern != "") && (text != ""))
  75                 {
  76                         while (strstr(text.c_str(),pattern.c_str()))
  77                         {
  78                                 int pos = text.find(pattern);
  79                                 text.erase(pos,pattern.length());
  80                                 text.insert(pos,replace);
  81                         }
  82                 }
  83         }
  84
  85         // format of a config entry is <badword text="shit" replace="poo">
  86
  87         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
  88         {
  89                 bool active = false;
  90                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
  91                 {
  92                         std::string pattern = MyConf->ReadValue("badword","text",index);
  93                         if (strstr(text.c_str(),pattern.c_str()))
  94                         {
  95                                 std::string replace = MyConf->ReadValue("badword","replace",index);
  96
  97                                 if (target_type == TYPE_USER)
  98                                 {
  99                                         userrec* t = (userrec*)dest;
 100                                         active = (strchr(t->modes,'G') > 0);
 101                                 }
 102                                 else if (target_type == TYPE_CHANNEL)
 103                                 {
 104                                         chanrec* t = (chanrec*)dest;
 105                                         active = (t->IsCustomModeSet('G'));
 106                                 }
 107
 108                                 if (active)
 109                                 {
 110                                         this->ReplaceLine(text,pattern,replace);
 111                                 }
 112
 113                                 return 0;
 114                         }
 115                 }
 116                 return 0;
 117         }
 118
 119         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 120         {
 121                 bool active = false;
 122                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 123                 {
 124                         std::string pattern = MyConf->ReadValue("badword","text",index);
 125                         if (strstr(text.c_str(),pattern.c_str()))
 126                         {
 127                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 128
 129                                 if (target_type == TYPE_USER)
 130                                 {
 131                                         userrec* t = (userrec*)dest;
 132                                         active = (strchr(t->modes,'G') > 0);
 133                                 }
 134                                 else if (target_type == TYPE_CHANNEL)
 135                                 {
 136                                         chanrec* t = (chanrec*)dest;
 137                                         active = (t->IsCustomModeSet('G'));
 138                                 }
 139
 140                                 if (active)
 141                                 {
 142                                         this->ReplaceLine(text,pattern,replace);
 143                                 }
 144
 145                                 return 0;
 146                         }
 147                 }
 148                 return 0;
 149         }
 150
 151         virtual void OnRehash()
 152         {
 153                 // reload our config file on rehash - we must destroy and re-allocate the classes
 154                 // to call the constructor again and re-read our data.
 155                 delete Conf;
 156                 delete MyConf;
 157                 Conf = new ConfigReader;
 158                 std::string Censorfile = Conf->ReadValue("censor","file",0);
 159                 // this automatically re-reads the configuration file into the class
 160                 MyConf = new ConfigReader(Censorfile);
 161                 if ((Censorfile == "") || (!MyConf->Verify()))
 162                 {
 163                         // bail if the user forgot to create a config file
 164                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
 165                         exit(0);
 166                 }
 167                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
 168         }
 169
 170         virtual Version GetVersion()
 171         {
 172                 // This is version 2 because version 1.x is the unreleased unrealircd module
 173                 return Version(1,0,0,0);
 174         }
 175
 176 };
 177
 178 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 179
 180 class ModuleCensorFactory : public ModuleFactory
 181 {
 182  public:
 183         ModuleCensorFactory()
 184         {
 185         }
 186
 187         ~ModuleCensorFactory()
 188         {
 189         }
 190
 191         virtual Module * CreateModule()
 192         {
 193                 return new ModuleCensor;
 194         }
 195
 196 };
 197
 198
 199 extern "C" void * init_module( void )
 200 {
 201         return new ModuleCensorFactory;
 202 }
 203