src/modules/m_antibear.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/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  private:
  22
  23  public:
  24         ModuleAntiBear(InspIRCd* Me) : Module(Me)
  25         {
  26
  27                 Implementation eventlist[] = { I_OnUserRegister, I_OnPreCommand };
  28                 ServerInstance->Modules->Attach(eventlist, this, 2);
  29         }
  30
  31         virtual ~ModuleAntiBear()
  32         {
  33         }
  34
  35         virtual Version GetVersion()
  36         {
  37                 return Version(1,1,0,0,VF_VENDOR,API_VERSION);
  38         }
  39
  40
  41         virtual int OnPreCommand(const std::string &command, const char* const* parameters, int pcnt, User *user, bool validated, const std::string &original_line)
  42         {
  43                 if (command == "NOTICE" && !validated && pcnt > 1 && user->GetExt("antibear_timewait"))
  44                 {
  45                         if (!strncmp(parameters[1], "\1TIME Mon May 01 18:54:20 2006", 30))
  46                         {
  47                                 ZLine* zl = new ZLine(ServerInstance, ServerInstance->Time(), 86400, ServerInstance->Config->ServerName,
  48                                                 "Unless you're stuck in a time warp, you appear to be a bear bot!", user->GetIPString());
  49                                 if (ServerInstance->XLines->AddLine(zl,NULL))
  50                                 {
  51                                         ServerInstance->XLines->ApplyLines();
  52                                 }
  53                                 else
  54                                         delete zl;
  55
  56                                 return 1;
  57                         }
  58
  59                         user->Shrink("antibear_timewait");
  60                         // Block the command, so the user doesn't receive a no such nick notice
  61                         return 1;
  62                 }
  63
  64                 return 0;
  65         }
  66
  67         virtual int OnUserRegister(User* user)
  68         {
  69                 user->WriteNumeric(439, "%s :This server has anti-spambot mechanisms enabled.", user->nick);
  70                 user->WriteNumeric(931, "%s :Malicious bots, spammers, and other automated systems of dubious origin are NOT welcome here.", user->nick);
  71                 user->WriteServ("PRIVMSG %s :\1TIME\1", user->nick);
  72                 user->Extend("antibear_timewait");
  73                 return 0;
  74         }
  75 };
  76
  77 MODULE_INIT(ModuleAntiBear)