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()
  35         {
  36                 // read the configuration file on startup.
  37                 // it is perfectly valid to set <censor file> to the value of the
  38                 // main config file, then append your <badword> tags to the bottom
  39                 // of the main config... but rather messy. That's why the capability
  40                 // of using a seperate config file is provided.
  41                 Srv = new Server;
  42                 Conf = new ConfigReader;
  43                 std::string Censorfile = Conf->ReadValue("censor","file",0);
  44                 MyConf = new ConfigReader(Censorfile);
  45                 if ((Censorfile == "") || (!MyConf->Verify()))
  46                 {
  47                         printf("Error, could not find <censor file=\"\"> definition in your config file!");
  48                         log(DEFAULT,"Error, could not find <censor file=\"\"> definition in your config file!");
  49                         return;
  50                 }
  51                 Srv->Log(DEFAULT,std::string("m_censor: read configuration from ")+Censorfile);
  52                 Srv->AddExtendedMode('G',MT_CHANNEL,false,0,0);
  53                 Srv->AddExtendedMode('G',MT_CLIENT,false,0,0);
  54         }
  55
  56         virtual void On005Numeric(std::string &output)
  57         {
  58                 std::stringstream line(output);
  59                 std::string temp1, temp2;
  60                 while (!line.eof())
  61                 {
  62                         line >> temp1;
  63                         if (temp1.substr(0,10) == "CHANMODES=")
  64                         {
  65                                 // append the chanmode to the end
  66                                 temp1 = temp1.substr(10,temp1.length());
  67                                 temp1 = "CHANMODES=" + temp1 + "G";
  68                         }
  69                         temp2 = temp2 + temp1 + " ";
  70                 }
  71                 if (temp2.length())
  72                         output = temp2.substr(0,temp2.length()-1);
  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 Srv;
  92                 delete MyConf;
  93                 delete Conf;
  94         }
  95
  96         virtual void ReplaceLine(std::string &text,std::string pattern, std::string replace)
  97         {
  98                 if ((pattern != "") && (text != ""))
  99                 {
 100                         while (text.find(pattern) != std::string::npos)
 101                         {
 102                                 int pos = text.find(pattern);
 103                                 text.erase(pos,pattern.length());
 104                                 text.insert(pos,replace);
 105                         }
 106                 }
 107         }
 108
 109         // format of a config entry is <badword text="shit" replace="poo">
 110
 111         virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text)
 112         {
 113                 bool active = false;
 114                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 115                 {
 116                         std::string pattern = MyConf->ReadValue("badword","text",index);
 117                         if (text.find(pattern) != std::string::npos)
 118                         {
 119                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 120
 121                                 if (target_type == TYPE_USER)
 122                                 {
 123                                         userrec* t = (userrec*)dest;
 124                                         active = (strchr(t->modes,'G') > 0);
 125                                 }
 126                                 else if (target_type == TYPE_CHANNEL)
 127                                 {
 128                                         chanrec* t = (chanrec*)dest;
 129                                         active = (t->IsCustomModeSet('G'));
 130                                 }
 131
 132                                 if (active)
 133                                 {
 134                                         this->ReplaceLine(text,pattern,replace);
 135                                 }
 136                         }
 137                 }
 138                 return 0;
 139         }
 140
 141         virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text)
 142         {
 143                 bool active = false;
 144                 for (int index = 0; index < MyConf->Enumerate("badword"); index++)
 145                 {
 146                         std::string pattern = MyConf->ReadValue("badword","text",index);
 147                         if (text.find(pattern) != std::string::npos)
 148                         {
 149                                 std::string replace = MyConf->ReadValue("badword","replace",index);
 150
 151                                 if (target_type == TYPE_USER)
 152                                 {
 153                                         userrec* t = (userrec*)dest;
 154                                         active = (strchr(t->modes,'G') > 0);
 155                                 }
 156                                 else if (target_type == TYPE_CHANNEL)
 157                                 {
 158                                         chanrec* t = (chanrec*)dest;
 159                                         active = (t->IsCustomModeSet('G'));
 160                                 }
 161
 162                                 if (active)
 163                                 {
 164                                         this->ReplaceLine(text,pattern,replace);
 165                                 }
 166                         }
 167                 }
 168                 return 0;
 169         }
 170
 171         virtual void OnRehash(std::string parameter)
 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                         log(DEFAULT,"Error, could not find <censor file=\"\"> definition in your config file!");
 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,VF_STATIC|VF_VENDOR);
 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