src/modules/m_antibear.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "xline.h"
  16
  17 /* $ModDesc: Sends a numeric on connect which cripples a common type of trojan/spambot */
  18
  19 class ModuleAntiBear : public Module
  20 {
  21         LocalIntExt bearExt;
  22  public:
  23         ModuleAntiBear(InspIRCd* Me) : Module(Me), bearExt("antibear_timewait", this)
  24         {
  25                 Extensible::Register(&bearExt);
  26                 Implementation eventlist[] = { I_OnUserRegister, I_OnPreCommand };
  27                 ServerInstance->Modules->Attach(eventlist, this, 2);
  28         }
  29
  30         virtual ~ModuleAntiBear()
  31         {
  32         }
  33
  34         virtual Version GetVersion()
  35         {
  36                 return Version("Sends a numeric on connect which cripples a common type of trojan/spambot",VF_VENDOR,API_VERSION);
  37         }
  38
  39         virtual ModResult OnPreCommand(std::string &command, std::vector<std::string> &parameters, User *user, bool validated, const std::string &original_line)
  40         {
  41                 if (command == "NOTICE" && !validated && parameters.size() > 1 && bearExt.get(user))
  42                 {
  43                         if (!strncmp(parameters[1].c_str(), "\1TIME Mon May 01 18:54:20 2006", 30))
  44                         {
  45                                 ZLine* zl = new ZLine(ServerInstance, ServerInstance->Time(), 86400, ServerInstance->Config->ServerName,
  46                                                 "Unless you're stuck in a time warp, you appear to be a bear bot!", user->GetIPString());
  47                                 if (ServerInstance->XLines->AddLine(zl,NULL))
  48                                 {
  49                                         ServerInstance->XLines->ApplyLines();
  50                                 }
  51                                 else
  52                                         delete zl;
  53
  54                                 return MOD_RES_DENY;
  55                         }
  56
  57                         bearExt.set(user, 0);
  58                         // Block the command, so the user doesn't receive a no such nick notice
  59                         return MOD_RES_DENY;
  60                 }
  61
  62                 return MOD_RES_PASSTHRU;
  63         }
  64
  65         virtual ModResult OnUserRegister(User* user)
  66         {
  67                 user->WriteNumeric(439, "%s :This server has anti-spambot mechanisms enabled.", user->nick.c_str());
  68                 user->WriteNumeric(931, "%s :Malicious bots, spammers, and other automated systems of dubious origin are NOT welcome here.", user->nick.c_str());
  69                 user->WriteServ("PRIVMSG %s :\1TIME\1", user->nick.c_str());
  70                 bearExt.set(user, 1);
  71                 return MOD_RES_PASSTHRU;
  72         }
  73 };
  74
  75 MODULE_INIT(ModuleAntiBear)