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         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                 std::stringstream line(output);
  73                 std::string temp1, temp2;
  74                 while (!line.eof())
  75                 {
  76                         line >> temp1;
  77                         if (temp1.substr(0,10) == "CHANMODES=")
  78                         {
  79                                 // append the chanmode to the end
  80                                 temp1 = temp1.substr(10,temp1.length());
  81                                 temp1 = "CHANMODES=" + temp1 + "G";
  82                         }
  83                         temp2 = temp2 + temp1 + " ";
  84                 }
  85                 if (temp2.length())
  86                         output = temp2.substr(0,temp2.length()-1);
  87         }
  88
  89
  90         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
  91         {
  92                 // check if this is our mode character...
  93                 if (modechar == 'G')
  94                 {
  95                         return 1;
  96                 }
  97                 else
  98                 {
  99                         return 0;
 100                 }
 101         }
 102
 103         virtual ~ModuleCensor()
 104         {
 105                 delete MyConf;
 106                 delete Conf;
 107         }
 108
 109         virtual void ReplaceLine(std::string &text,std::string pattern, std::string replace)
 110         {
 111                 if ((pattern != "") && (text != ""))
 112                 {
 113                         while (text.find(pattern) != std::string::npos)
 114                         {
 115                                 int pos = text.find(pattern);
 116                                 text.erase(pos,pattern.length());
 117                                 text.insert(pos,replace);
 118                         }
 119                 }
 120         }
 121
 122         // format of a config entry is <badword text="shit" replace="poo">
 123
 124         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
 125         {
 126                 bool active = false;
 127                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 128                 {
 129                         std::string pattern = MyConf->ReadValue("badword","text",index);
 130                         if (text.find(pattern) != std::string::npos)
 131                         {
 132                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 133
 134                                 if (target_type == TYPE_USER)
 135                                 {
 136                                         userrec* t = (userrec*)dest;
 137                                         active = (strchr(t->modes,'G') > 0);
 138                                 }
 139                                 else if (target_type == TYPE_CHANNEL)
 140                                 {
 141                                         chanrec* t = (chanrec*)dest;
 142                                         active = (t->IsCustomModeSet('G'));
 143                                 }
 144
 145                                 if (active)
 146                                 {
 147                                         this->ReplaceLine(text,pattern,replace);
 148                                 }
 149                         }
 150                 }
 151                 return 0;
 152         }
 153
 154         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 155         {
 156                 bool active = false;
 157                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 158                 {
 159                         std::string pattern = MyConf->ReadValue("badword","text",index);
 160                         if (text.find(pattern) != std::string::npos)
 161                         {
 162                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 163
 164                                 if (target_type == TYPE_USER)
 165                                 {
 166                                         userrec* t = (userrec*)dest;
 167                                         active = (strchr(t->modes,'G') > 0);
 168                                 }
 169                                 else if (target_type == TYPE_CHANNEL)
 170                                 {
 171                                         chanrec* t = (chanrec*)dest;
 172                                         active = (t->IsCustomModeSet('G'));
 173                                 }
 174
 175                                 if (active)
 176                                 {
 177                                         this->ReplaceLine(text,pattern,replace);
 178                                 }
 179                         }
 180                 }
 181                 return 0;
 182         }
 183
 184         virtual void OnRehash(std::string parameter)
 185         {
 186                 /*
 187                  * reload our config file on rehash - we must destroy and re-allocate the classes
 188                  * to call the constructor again and re-read our data.
 189                  */
 190                 delete Conf;
 191                 delete MyConf;
 192                 Conf = new ConfigReader;
 193                 std::string Censorfile = Conf->ReadValue("censor","file",0);
 194                 // this automatically re-reads the configuration file into the class
 195                 MyConf = new ConfigReader(Censorfile);
 196                 if ((Censorfile == "") || (!MyConf->Verify()))
 197                 {
 198                         // bail if the user forgot to create a config file
 199                         printf("Error, could not find <censor file=\"\"> definition in your config file!\n");
 200                         log(DEFAULT,"Error, could not find <censor file=\"\"> definition in your config file!");
 201                 }
 202                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
 203         }
 204
 205         virtual Version GetVersion()
 206         {
 207                 // This is version 2 because version 1.x is the unreleased unrealircd module
 208                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
 209         }
 210
 211 };
 212
 213 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 214
 215 class ModuleCensorFactory : public ModuleFactory
 216 {
 217  public:
 218         ModuleCensorFactory()
 219         {
 220         }
 221
 222         ~ModuleCensorFactory()
 223         {
 224         }
 225
 226         virtual Module * CreateModule(Server* Me)
 227         {
 228                 return new ModuleCensor(Me);
 229         }
 230
 231 };
 232
 233
 234 extern "C" void * init_module( void )
 235 {
 236         return new ModuleCensorFactory;
 237 }
 238