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                         log(DEFAULT,"Error, could not find <censor file=\"\"> definition in your config file!");
  46                         return;
  47                 }
  48                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
  49                 Srv->AddExtendedMode('G',MT_CHANNEL,false,0,0);
  50                 Srv->AddExtendedMode('G',MT_CLIENT,false,0,0);
  51         }
  52
  53         virtual void On005Numeric(std::string &output)
  54         {
  55                 std::stringstream line(output);
  56                 std::string temp1, temp2;
  57                 while (!line.eof())
  58                 {
  59                         line >> temp1;
  60                         if (temp1.substr(0,10) == "CHANMODES=")
  61                         {
  62                                 // append the chanmode to the end
  63                                 temp1 = temp1.substr(10,temp1.length());
  64                                 temp1 = "CHANMODES=" + temp1 + "G";
  65                         }
  66                         temp2 = temp2 + temp1 + " ";
  67                 }
  68                 if (temp2.length())
  69                         output = temp2.substr(0,temp2.length()-1);
  70         }
  71
  72
  73         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
  74         {
  75                 // check if this is our mode character...
  76                 if (modechar == 'G')
  77                 {
  78                         return 1;
  79                 }
  80                 else
  81                 {
  82                         return 0;
  83                 }
  84         }
  85
  86         virtual ~ModuleCensor()
  87         {
  88                 delete Srv;
  89                 delete MyConf;
  90                 delete Conf;
  91         }
  92
  93         virtual void ReplaceLine(std::string &text,std::string pattern, std::string replace)
  94         {
  95                 if ((pattern != "") && (text != ""))
  96                 {
  97                         while (strstr(text.c_str(),pattern.c_str()))
  98                         {
  99                                 int pos = text.find(pattern);
 100                                 text.erase(pos,pattern.length());
 101                                 text.insert(pos,replace);
 102                         }
 103                 }
 104         }
 105
 106         // format of a config entry is <badword text="shit" replace="poo">
 107
 108         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
 109         {
 110                 bool active = false;
 111                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 112                 {
 113                         std::string pattern = MyConf->ReadValue("badword","text",index);
 114                         if (strstr(text.c_str(),pattern.c_str()))
 115                         {
 116                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 117
 118                                 if (target_type == TYPE_USER)
 119                                 {
 120                                         userrec* t = (userrec*)dest;
 121                                         active = (strchr(t->modes,'G') > 0);
 122                                 }
 123                                 else if (target_type == TYPE_CHANNEL)
 124                                 {
 125                                         chanrec* t = (chanrec*)dest;
 126                                         active = (t->IsCustomModeSet('G'));
 127                                 }
 128
 129                                 if (active)
 130                                 {
 131                                         this->ReplaceLine(text,pattern,replace);
 132                                 }
 133
 134                                 return 0;
 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 (strstr(text.c_str(),pattern.c_str()))
 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                                 return 0;
 167                         }
 168                 }
 169                 return 0;
 170         }
 171
 172         virtual void OnRehash()
 173         {
 174                 // reload our config file on rehash - we must destroy and re-allocate the classes
 175                 // to call the constructor again and re-read our data.
 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!");
 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()
 213         {
 214                 return new ModuleCensor;
 215         }
 216
 217 };
 218
 219
 220 extern "C" void * init_module( void )
 221 {
 222         return new ModuleCensorFactory;
 223 }
 224