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 using namespace std;
  18
  19 #include <stdio.h>
  20 #include <string>
  21 #include "users.h"
  22 #include "channels.h"
  23 #include "modules.h"
  24 #include "helperfuncs.h"
  25
  26 /* $ModDesc: Provides user and channel +G mode */
  27
  28 class ModuleCensor : public Module
  29 {
  30  Server *Srv;
  31  ConfigReader *Conf, *MyConf;
  32
  33  public:
  34         ModuleCensor(Server* Me)
  35                 : Module::Module(Me)
  36         {
  37                 /*
  38                  * read the configuration file on startup.
  39                  * it is perfectly valid to set <censor file> to the value of the
  40                  * main config file, then append your <badword> tags to the bottom
  41                  * of the main config... but rather messy. That's why the capability
  42                  * of using a seperate config file is provided.
  43                  *
  44                  * XXX - Really, it'd be nice to scraip this kind of thing, and have something like
  45                  * an include directive to include additional configuration files. Might make our lives easier. --w00t
  46                  *
  47                  * XXX - These module pre-date the include directive which exists since beta 5 -- Brain
  48                  */
  49                 Srv = Me;
  50                 Conf = new ConfigReader;
  51                 std::string Censorfile = Conf->ReadValue("censor","file",0);
  52                 MyConf = new ConfigReader(Censorfile);
  53                 if ((Censorfile == "") || (!MyConf->Verify()))
  54                 {
  55                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
  56                         log(DEFAULT,"Error, could not find <censor file=\"\"> definition in your config file!");
  57                         return;
  58                 }
  59                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
  60                 Srv->AddExtendedMode('G',MT_CHANNEL,false,0,0);
  61                 Srv->AddExtendedMode('G',MT_CLIENT,false,0,0);
  62         }
  63
  64         virtual void On005Numeric(std::string &output)
  65         {
  66                 std::stringstream line(output);
  67                 std::string temp1, temp2;
  68                 while (!line.eof())
  69                 {
  70                         line >> temp1;
  71                         if (temp1.substr(0,10) == "CHANMODES=")
  72                         {
  73                                 // append the chanmode to the end
  74                                 temp1 = temp1.substr(10,temp1.length());
  75                                 temp1 = "CHANMODES=" + temp1 + "G";
  76                         }
  77                         temp2 = temp2 + temp1 + " ";
  78                 }
  79                 if (temp2.length())
  80                         output = temp2.substr(0,temp2.length()-1);
  81         }
  82
  83
  84         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
  85         {
  86                 // check if this is our mode character...
  87                 if (modechar == 'G')
  88                 {
  89                         return 1;
  90                 }
  91                 else
  92                 {
  93                         return 0;
  94                 }
  95         }
  96
  97         virtual ~ModuleCensor()
  98         {
  99                 delete MyConf;
 100                 delete Conf;
 101         }
 102
 103         virtual void ReplaceLine(std::string &text,std::string pattern, std::string replace)
 104         {
 105                 if ((pattern != "") && (text != ""))
 106                 {
 107                         while (text.find(pattern) != std::string::npos)
 108                         {
 109                                 int pos = text.find(pattern);
 110                                 text.erase(pos,pattern.length());
 111                                 text.insert(pos,replace);
 112                         }
 113                 }
 114         }
 115
 116         // format of a config entry is <badword text="shit" replace="poo">
 117
 118         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
 119         {
 120                 bool active = false;
 121                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 122                 {
 123                         std::string pattern = MyConf->ReadValue("badword","text",index);
 124                         if (text.find(pattern) != std::string::npos)
 125                         {
 126                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 127
 128                                 if (target_type == TYPE_USER)
 129                                 {
 130                                         userrec* t = (userrec*)dest;
 131                                         active = (strchr(t->modes,'G') > 0);
 132                                 }
 133                                 else if (target_type == TYPE_CHANNEL)
 134                                 {
 135                                         chanrec* t = (chanrec*)dest;
 136                                         active = (t->IsCustomModeSet('G'));
 137                                 }
 138
 139                                 if (active)
 140                                 {
 141                                         this->ReplaceLine(text,pattern,replace);
 142                                 }
 143                         }
 144                 }
 145                 return 0;
 146         }
 147
 148         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 149         {
 150                 bool active = false;
 151                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 152                 {
 153                         std::string pattern = MyConf->ReadValue("badword","text",index);
 154                         if (text.find(pattern) != std::string::npos)
 155                         {
 156                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 157
 158                                 if (target_type == TYPE_USER)
 159                                 {
 160                                         userrec* t = (userrec*)dest;
 161                                         active = (strchr(t->modes,'G') > 0);
 162                                 }
 163                                 else if (target_type == TYPE_CHANNEL)
 164                                 {
 165                                         chanrec* t = (chanrec*)dest;
 166                                         active = (t->IsCustomModeSet('G'));
 167                                 }
 168
 169                                 if (active)
 170                                 {
 171                                         this->ReplaceLine(text,pattern,replace);
 172                                 }
 173                         }
 174                 }
 175                 return 0;
 176         }
 177
 178         virtual void OnRehash(std::string parameter)
 179         {
 180                 /*
 181                  * reload our config file on rehash - we must destroy and re-allocate the classes
 182                  * to call the constructor again and re-read our data.
 183                  */
 184                 delete Conf;
 185                 delete MyConf;
 186                 Conf = new ConfigReader;
 187                 std::string Censorfile = Conf->ReadValue("censor","file",0);
 188                 // this automatically re-reads the configuration file into the class
 189                 MyConf = new ConfigReader(Censorfile);
 190                 if ((Censorfile == "") || (!MyConf->Verify()))
 191                 {
 192                         // bail if the user forgot to create a config file
 193                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
 194                         log(DEFAULT,"Error, could not find <censor file=\"\"> definition in your config file!");
 195                 }
 196                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
 197         }
 198
 199         virtual Version GetVersion()
 200         {
 201                 // This is version 2 because version 1.x is the unreleased unrealircd module
 202                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
 203         }
 204
 205 };
 206
 207 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 208
 209 class ModuleCensorFactory : public ModuleFactory
 210 {
 211  public:
 212         ModuleCensorFactory()
 213         {
 214         }
 215
 216         ~ModuleCensorFactory()
 217         {
 218         }
 219
 220         virtual Module * CreateModule(Server* Me)
 221         {
 222                 return new ModuleCensor(Me);
 223         }
 224
 225 };
 226
 227
 228 extern "C" void * init_module( void )
 229 {
 230         return new ModuleCensorFactory;
 231 }
 232