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                 Srv = Me;
  48                 Conf = new ConfigReader;
  49                 std::string Censorfile = Conf->ReadValue("censor","file",0);
  50                 MyConf = new ConfigReader(Censorfile);
  51                 if ((Censorfile == "") || (!MyConf->Verify()))
  52                 {
  53                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
  54                         log(DEFAULT,"Error, could not find <censor file=\"\"> definition in your config file!");
  55                         return;
  56                 }
  57                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
  58                 Srv->AddExtendedMode('G',MT_CHANNEL,false,0,0);
  59                 Srv->AddExtendedMode('G',MT_CLIENT,false,0,0);
  60         }
  61
  62         virtual void On005Numeric(std::string &output)
  63         {
  64                 std::stringstream line(output);
  65                 std::string temp1, temp2;
  66                 while (!line.eof())
  67                 {
  68                         line >> temp1;
  69                         if (temp1.substr(0,10) == "CHANMODES=")
  70                         {
  71                                 // append the chanmode to the end
  72                                 temp1 = temp1.substr(10,temp1.length());
  73                                 temp1 = "CHANMODES=" + temp1 + "G";
  74                         }
  75                         temp2 = temp2 + temp1 + " ";
  76                 }
  77                 if (temp2.length())
  78                         output = temp2.substr(0,temp2.length()-1);
  79         }
  80
  81
  82         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
  83         {
  84                 // check if this is our mode character...
  85                 if (modechar == 'G')
  86                 {
  87                         return 1;
  88                 }
  89                 else
  90                 {
  91                         return 0;
  92                 }
  93         }
  94
  95         virtual ~ModuleCensor()
  96         {
  97                 delete MyConf;
  98                 delete Conf;
  99         }
 100
 101         virtual void ReplaceLine(std::string &text,std::string pattern, std::string replace)
 102         {
 103                 if ((pattern != "") && (text != ""))
 104                 {
 105                         while (text.find(pattern) != std::string::npos)
 106                         {
 107                                 int pos = text.find(pattern);
 108                                 text.erase(pos,pattern.length());
 109                                 text.insert(pos,replace);
 110                         }
 111                 }
 112         }
 113
 114         // format of a config entry is <badword text="shit" replace="poo">
 115
 116         virtual int OnUserPreMessage(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 (text.find(pattern) != std::string::npos)
 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                 }
 143                 return 0;
 144         }
 145
 146         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 147         {
 148                 bool active = false;
 149                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 150                 {
 151                         std::string pattern = MyConf->ReadValue("badword","text",index);
 152                         if (text.find(pattern) != std::string::npos)
 153                         {
 154                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 155
 156                                 if (target_type == TYPE_USER)
 157                                 {
 158                                         userrec* t = (userrec*)dest;
 159                                         active = (strchr(t->modes,'G') > 0);
 160                                 }
 161                                 else if (target_type == TYPE_CHANNEL)
 162                                 {
 163                                         chanrec* t = (chanrec*)dest;
 164                                         active = (t->IsCustomModeSet('G'));
 165                                 }
 166
 167                                 if (active)
 168                                 {
 169                                         this->ReplaceLine(text,pattern,replace);
 170                                 }
 171                         }
 172                 }
 173                 return 0;
 174         }
 175
 176         virtual void OnRehash(std::string parameter)
 177         {
 178                 /*
 179                  * reload our config file on rehash - we must destroy and re-allocate the classes
 180                  * to call the constructor again and re-read our data.
 181                  */
 182                 delete Conf;
 183                 delete MyConf;
 184                 Conf = new ConfigReader;
 185                 std::string Censorfile = Conf->ReadValue("censor","file",0);
 186                 // this automatically re-reads the configuration file into the class
 187                 MyConf = new ConfigReader(Censorfile);
 188                 if ((Censorfile == "") || (!MyConf->Verify()))
 189                 {
 190                         // bail if the user forgot to create a config file
 191                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
 192                         log(DEFAULT,"Error, could not find <censor file=\"\"> definition in your config file!");
 193                 }
 194                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
 195         }
 196
 197         virtual Version GetVersion()
 198         {
 199                 // This is version 2 because version 1.x is the unreleased unrealircd module
 200                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
 201         }
 202
 203 };
 204
 205 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 206
 207 class ModuleCensorFactory : public ModuleFactory
 208 {
 209  public:
 210         ModuleCensorFactory()
 211         {
 212         }
 213
 214         ~ModuleCensorFactory()
 215         {
 216         }
 217
 218         virtual Module * CreateModule(Server* Me)
 219         {
 220                 return new ModuleCensor(Me);
 221         }
 222
 223 };
 224
 225
 226 extern "C" void * init_module( void )
 227 {
 228         return new ModuleCensorFactory;
 229 }
 230