src/modules/m_censor.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 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         void Implements(char* List)
  65         {
  66                 List[I_OnRehash] = List[I_On005Numeric] = List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnExtendedMode] = 1;
  67         }
  68
  69
  70         virtual void On005Numeric(std::string &output)
  71         {
  72                 InsertMode(output,"G",4);
  73         }
  74
  75
  76         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
  77         {
  78                 // check if this is our mode character...
  79                 if (modechar == 'G')
  80                 {
  81                         return 1;
  82                 }
  83                 else
  84                 {
  85                         return 0;
  86                 }
  87         }
  88
  89         virtual ~ModuleCensor()
  90         {
  91                 delete MyConf;
  92                 delete Conf;
  93         }
  94
  95         virtual void ReplaceLine(std::string &text,std::string pattern, std::string replace)
  96         {
  97                 if ((pattern != "") && (text != ""))
  98                 {
  99                         while (text.find(pattern) != std::string::npos)
 100                         {
 101                                 int pos = text.find(pattern);
 102                                 text.erase(pos,pattern.length());
 103                                 text.insert(pos,replace);
 104                         }
 105                 }
 106         }
 107
 108         // format of a config entry is <badword text="shit" replace="poo">
 109
 110         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
 111         {
 112                 bool active = false;
 113                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 114                 {
 115                         std::string pattern = MyConf->ReadValue("badword","text",index);
 116                         if (text.find(pattern) != std::string::npos)
 117                         {
 118                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 119
 120                                 if (target_type == TYPE_USER)
 121                                 {
 122                                         userrec* t = (userrec*)dest;
 123                                         active = (strchr(t->modes,'G') > 0);
 124                                 }
 125                                 else if (target_type == TYPE_CHANNEL)
 126                                 {
 127                                         chanrec* t = (chanrec*)dest;
 128                                         active = (t->IsCustomModeSet('G'));
 129                                 }
 130
 131                                 if (active)
 132                                 {
 133                                         this->ReplaceLine(text,pattern,replace);
 134                                 }
 135                         }
 136                 }
 137                 return 0;
 138         }
 139
 140         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 141         {
 142                 bool active = false;
 143                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 144                 {
 145                         std::string pattern = MyConf->ReadValue("badword","text",index);
 146                         if (text.find(pattern) != std::string::npos)
 147                         {
 148                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 149
 150                                 if (target_type == TYPE_USER)
 151                                 {
 152                                         userrec* t = (userrec*)dest;
 153                                         active = (strchr(t->modes,'G') > 0);
 154                                 }
 155                                 else if (target_type == TYPE_CHANNEL)
 156                                 {
 157                                         chanrec* t = (chanrec*)dest;
 158                                         active = (t->IsCustomModeSet('G'));
 159                                 }
 160
 161                                 if (active)
 162                                 {
 163                                         this->ReplaceLine(text,pattern,replace);
 164                                 }
 165                         }
 166                 }
 167                 return 0;
 168         }
 169
 170         virtual void OnRehash(std::string parameter)
 171         {
 172                 /*
 173                  * reload our config file on rehash - we must destroy and re-allocate the classes
 174                  * to call the constructor again and re-read our data.
 175                  */
 176                 delete Conf;
 177                 delete MyConf;
 178                 Conf = new ConfigReader;
 179                 std::string Censorfile = Conf->ReadValue("censor","file",0);
 180                 // this automatically re-reads the configuration file into the class
 181                 MyConf = new ConfigReader(Censorfile);
 182                 if ((Censorfile == "") || (!MyConf->Verify()))
 183                 {
 184                         // bail if the user forgot to create a config file
 185                         printf("Error, could not find <censor file=\"\"> definition in your config file!\n");
 186                         log(DEFAULT,"Error, could not find <censor file=\"\"> definition in your config file!");
 187                 }
 188                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
 189         }
 190
 191         virtual Version GetVersion()
 192         {
 193                 // This is version 2 because version 1.x is the unreleased unrealircd module
 194                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
 195         }
 196
 197 };
 198
 199 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 200
 201 class ModuleCensorFactory : public ModuleFactory
 202 {
 203  public:
 204         ModuleCensorFactory()
 205         {
 206         }
 207
 208         ~ModuleCensorFactory()
 209         {
 210         }
 211
 212         virtual Module * CreateModule(Server* Me)
 213         {
 214                 return new ModuleCensor(Me);
 215         }
 216
 217 };
 218
 219
 220 extern "C" void * init_module( void )
 221 {
 222         return new ModuleCensorFactory;
 223 }
 224