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                 while (strstr(text.c_str(),pattern.c_str()))
  75                 {
  76                         int pos = text.find(pattern);
  77                         text.erase(pos,pattern.length());
  78                         text.insert(pos,replace);
  79                 }
  80         }
  81
  82         // format of a config entry is <badword text="shit" replace="poo">
  83
  84         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
  85         {
  86                 bool active = false;
  87                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
  88                 {
  89                         std::string pattern = MyConf->ReadValue("badword","text",index);
  90                         if (strstr(text.c_str(),pattern.c_str()))
  91                         {
  92                                 std::string replace = MyConf->ReadValue("badword","replace",index);
  93
  94                                 if (target_type == TYPE_USER)
  95                                 {
  96                                         userrec* t = (userrec*)dest;
  97                                         active = (strchr(t->modes,'G') > 0);
  98                                 }
  99                                 else if (target_type == TYPE_CHANNEL)
 100                                 {
 101                                         chanrec* t = (chanrec*)dest;
 102                                         active = (t->IsCustomModeSet('G'));
 103                                 }
 104
 105                                 if (active)
 106                                 {
 107                                         this->ReplaceLine(text,pattern,replace);
 108                                 }
 109
 110                                 return 0;
 111                         }
 112                 }
 113                 return 0;
 114         }
 115
 116         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 117         {
 118                 bool active = false;
 119                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 120                 {
 121                         std::string pattern = MyConf->ReadValue("badword","text",index);
 122                         if (strstr(text.c_str(),pattern.c_str()))
 123                         {
 124                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 125
 126                                 if (target_type == TYPE_USER)
 127                                 {
 128                                         userrec* t = (userrec*)dest;
 129                                         active = (strchr(t->modes,'G') > 0);
 130                                 }
 131                                 else if (target_type == TYPE_CHANNEL)
 132                                 {
 133                                         chanrec* t = (chanrec*)dest;
 134                                         active = (t->IsCustomModeSet('G'));
 135                                 }
 136
 137                                 if (active)
 138                                 {
 139                                         this->ReplaceLine(text,pattern,replace);
 140                                 }
 141
 142                                 return 0;
 143                         }
 144                 }
 145                 return 0;
 146         }
 147
 148         virtual void OnRehash()
 149         {
 150                 // reload our config file on rehash - we must destroy and re-allocate the classes
 151                 // to call the constructor again and re-read our data.
 152                 delete Conf;
 153                 delete MyConf;
 154                 Conf = new ConfigReader;
 155                 std::string Censorfile = Conf->ReadValue("censor","file",0);
 156                 // this automatically re-reads the configuration file into the class
 157                 MyConf = new ConfigReader(Censorfile);
 158                 if ((Censorfile == "") || (!MyConf->Verify()))
 159                 {
 160                         // bail if the user forgot to create a config file
 161                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
 162                         exit(0);
 163                 }
 164                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
 165         }
 166
 167         virtual Version GetVersion()
 168         {
 169                 // This is version 2 because version 1.x is the unreleased unrealircd module
 170                 return Version(1,0,0,0);
 171         }
 172
 173 };
 174
 175 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 176
 177 class ModuleCensorFactory : public ModuleFactory
 178 {
 179  public:
 180         ModuleCensorFactory()
 181         {
 182         }
 183
 184         ~ModuleCensorFactory()
 185         {
 186         }
 187
 188         virtual Module * CreateModule()
 189         {
 190                 return new ModuleCensor;
 191         }
 192
 193 };
 194
 195
 196 extern "C" void * init_module( void )
 197 {
 198         return new ModuleCensorFactory;
 199 }
 200