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 void On005Numeric(std::string &output)
  53         {
  54                 std::stringstream line(output);
  55                 std::string temp1, temp2;
  56                 while (!line.eof())
  57                 {
  58                         line >> temp1;
  59                         if (temp1.substr(0,10) == "CHANMODES=")
  60                         {
  61                                 // append the chanmode to the end
  62                                 temp1 = temp1.substr(10,temp1.length());
  63                                 temp1 = "CHANMODES=" + temp1 + "G";
  64                         }
  65                         temp2 = temp2 + temp1 + " ";
  66                 }
  67                 output = temp2.substr(0,temp2.length()-1);
  68         }
  69
  70
  71         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
  72         {
  73                 // check if this is our mode character...
  74                 if (modechar == 'G')
  75                 {
  76                         return 1;
  77                 }
  78                 else
  79                 {
  80                         return 0;
  81                 }
  82         }
  83
  84         virtual ~ModuleCensor()
  85         {
  86                 delete Srv;
  87                 delete MyConf;
  88                 delete Conf;
  89         }
  90
  91         virtual void ReplaceLine(std::string &text,std::string pattern, std::string replace)
  92         {
  93                 if ((pattern != "") && (text != ""))
  94                 {
  95                         while (strstr(text.c_str(),pattern.c_str()))
  96                         {
  97                                 int pos = text.find(pattern);
  98                                 text.erase(pos,pattern.length());
  99                                 text.insert(pos,replace);
 100                         }
 101                 }
 102         }
 103
 104         // format of a config entry is <badword text="shit" replace="poo">
 105
 106         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
 107         {
 108                 bool active = false;
 109                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 110                 {
 111                         std::string pattern = MyConf->ReadValue("badword","text",index);
 112                         if (strstr(text.c_str(),pattern.c_str()))
 113                         {
 114                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 115
 116                                 if (target_type == TYPE_USER)
 117                                 {
 118                                         userrec* t = (userrec*)dest;
 119                                         active = (strchr(t->modes,'G') > 0);
 120                                 }
 121                                 else if (target_type == TYPE_CHANNEL)
 122                                 {
 123                                         chanrec* t = (chanrec*)dest;
 124                                         active = (t->IsCustomModeSet('G'));
 125                                 }
 126
 127                                 if (active)
 128                                 {
 129                                         this->ReplaceLine(text,pattern,replace);
 130                                 }
 131
 132                                 return 0;
 133                         }
 134                 }
 135                 return 0;
 136         }
 137
 138         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 139         {
 140                 bool active = false;
 141                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 142                 {
 143                         std::string pattern = MyConf->ReadValue("badword","text",index);
 144                         if (strstr(text.c_str(),pattern.c_str()))
 145                         {
 146                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 147
 148                                 if (target_type == TYPE_USER)
 149                                 {
 150                                         userrec* t = (userrec*)dest;
 151                                         active = (strchr(t->modes,'G') > 0);
 152                                 }
 153                                 else if (target_type == TYPE_CHANNEL)
 154                                 {
 155                                         chanrec* t = (chanrec*)dest;
 156                                         active = (t->IsCustomModeSet('G'));
 157                                 }
 158
 159                                 if (active)
 160                                 {
 161                                         this->ReplaceLine(text,pattern,replace);
 162                                 }
 163
 164                                 return 0;
 165                         }
 166                 }
 167                 return 0;
 168         }
 169
 170         virtual void OnRehash()
 171         {
 172                 // reload our config file on rehash - we must destroy and re-allocate the classes
 173                 // to call the constructor again and re-read our data.
 174                 delete Conf;
 175                 delete MyConf;
 176                 Conf = new ConfigReader;
 177                 std::string Censorfile = Conf->ReadValue("censor","file",0);
 178                 // this automatically re-reads the configuration file into the class
 179                 MyConf = new ConfigReader(Censorfile);
 180                 if ((Censorfile == "") || (!MyConf->Verify()))
 181                 {
 182                         // bail if the user forgot to create a config file
 183                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
 184                         exit(0);
 185                 }
 186                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
 187         }
 188
 189         virtual Version GetVersion()
 190         {
 191                 // This is version 2 because version 1.x is the unreleased unrealircd module
 192                 return Version(1,0,0,0);
 193         }
 194
 195 };
 196
 197 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 198
 199 class ModuleCensorFactory : public ModuleFactory
 200 {
 201  public:
 202         ModuleCensorFactory()
 203         {
 204         }
 205
 206         ~ModuleCensorFactory()
 207         {
 208         }
 209
 210         virtual Module * CreateModule()
 211         {
 212                 return new ModuleCensor;
 213         }
 214
 215 };
 216
 217
 218 extern "C" void * init_module( void )
 219 {
 220         return new ModuleCensorFactory;
 221 }
 222