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                         exit(0);
  46                 }
  47                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
  48                 Srv->AddExtendedMode('G',MT_CHANNEL,false,0,0);
  49                 Srv->AddExtendedMode('G',MT_CLIENT,false,0,0);
  50         }
  51
  52         virtual void On005Numeric(std::string &output)
  53         {
  54                 std::stringstream line(output);
  55                 std::string temp1, temp2;
  56                 while (!line.eof())
  57                 {
  58                         line >> temp1;
  59                         if (temp1.substr(0,10) == "CHANMODES=")
  60                         {
  61                                 // append the chanmode to the end
  62                                 temp1 = temp1.substr(10,temp1.length());
  63                                 temp1 = "CHANMODES=" + temp1 + "G";
  64                         }
  65                         temp2 = temp2 + temp1 + " ";
  66                 }
  67                 if (temp2.length())
  68                         output = temp2.substr(0,temp2.length()-1);
  69         }
  70
  71
  72         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
  73         {
  74                 // check if this is our mode character...
  75                 if (modechar == 'G')
  76                 {
  77                         return 1;
  78                 }
  79                 else
  80                 {
  81                         return 0;
  82                 }
  83         }
  84
  85         virtual ~ModuleCensor()
  86         {
  87                 delete Srv;
  88                 delete MyConf;
  89                 delete Conf;
  90         }
  91
  92         virtual void ReplaceLine(std::string &text,std::string pattern, std::string replace)
  93         {
  94                 if ((pattern != "") && (text != ""))
  95                 {
  96                         while (strstr(text.c_str(),pattern.c_str()))
  97                         {
  98                                 int pos = text.find(pattern);
  99                                 text.erase(pos,pattern.length());
 100                                 text.insert(pos,replace);
 101                         }
 102                 }
 103         }
 104
 105         // format of a config entry is <badword text="shit" replace="poo">
 106
 107         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
 108         {
 109                 bool active = false;
 110                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 111                 {
 112                         std::string pattern = MyConf->ReadValue("badword","text",index);
 113                         if (strstr(text.c_str(),pattern.c_str()))
 114                         {
 115                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 116
 117                                 if (target_type == TYPE_USER)
 118                                 {
 119                                         userrec* t = (userrec*)dest;
 120                                         active = (strchr(t->modes,'G') > 0);
 121                                 }
 122                                 else if (target_type == TYPE_CHANNEL)
 123                                 {
 124                                         chanrec* t = (chanrec*)dest;
 125                                         active = (t->IsCustomModeSet('G'));
 126                                 }
 127
 128                                 if (active)
 129                                 {
 130                                         this->ReplaceLine(text,pattern,replace);
 131                                 }
 132
 133                                 return 0;
 134                         }
 135                 }
 136                 return 0;
 137         }
 138
 139         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 140         {
 141                 bool active = false;
 142                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 143                 {
 144                         std::string pattern = MyConf->ReadValue("badword","text",index);
 145                         if (strstr(text.c_str(),pattern.c_str()))
 146                         {
 147                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 148
 149                                 if (target_type == TYPE_USER)
 150                                 {
 151                                         userrec* t = (userrec*)dest;
 152                                         active = (strchr(t->modes,'G') > 0);
 153                                 }
 154                                 else if (target_type == TYPE_CHANNEL)
 155                                 {
 156                                         chanrec* t = (chanrec*)dest;
 157                                         active = (t->IsCustomModeSet('G'));
 158                                 }
 159
 160                                 if (active)
 161                                 {
 162                                         this->ReplaceLine(text,pattern,replace);
 163                                 }
 164
 165                                 return 0;
 166                         }
 167                 }
 168                 return 0;
 169         }
 170
 171         virtual void OnRehash()
 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                 delete Conf;
 176                 delete MyConf;
 177                 Conf = new ConfigReader;
 178                 std::string Censorfile = Conf->ReadValue("censor","file",0);
 179                 // this automatically re-reads the configuration file into the class
 180                 MyConf = new ConfigReader(Censorfile);
 181                 if ((Censorfile == "") || (!MyConf->Verify()))
 182                 {
 183                         // bail if the user forgot to create a config file
 184                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
 185                         exit(0);
 186                 }
 187                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
 188         }
 189
 190         virtual Version GetVersion()
 191         {
 192                 // This is version 2 because version 1.x is the unreleased unrealircd module
 193                 return Version(1,0,0,0);
 194         }
 195
 196 };
 197
 198 // stuff down here is the module-factory stuff. For basic modules you can ignore this.
 199
 200 class ModuleCensorFactory : public ModuleFactory
 201 {
 202  public:
 203         ModuleCensorFactory()
 204         {
 205         }
 206
 207         ~ModuleCensorFactory()
 208         {
 209         }
 210
 211         virtual Module * CreateModule()
 212         {
 213                 return new ModuleCensor;
 214         }
 215
 216 };
 217
 218
 219 extern "C" void * init_module( void )
 220 {
 221         return new ModuleCensorFactory;
 222 }
 223