src/modules/m_antibear.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 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         }
  28
  29         virtual ~ModuleAntiBear()
  30         {
  31         }
  32
  33         virtual Version GetVersion()
  34         {
  35                 return Version(1,1,0,0,VF_VENDOR,API_VERSION);
  36         }
  37
  38         void Implements(char* List)
  39         {
  40                 List[I_OnUserRegister] = List[I_OnPreCommand] = 1;
  41         }
  42
  43         virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, User *user, bool validated, const std::string &original_line)
  44         {
  45                 if (command == "NOTICE" && !validated && pcnt > 1 && user->GetExt("antibear_timewait"))
  46                 {
  47                         if (!strncmp(parameters[1], "\1TIME Mon May 01 18:54:20 2006", 30))
  48                         {
  49                                 ZLine* zl = new ZLine(ServerInstance, ServerInstance->Time(), 86400, ServerInstance->Config->ServerName,
  50                                                 "Unless you're stuck in a time warp, you appear to be a bear bot!", user->GetIPString());
  51                                 if (ServerInstance->XLines->AddLine(zl))
  52                                 {
  53                                         // XXX move events into the xline manager
  54                                         FOREACH_MOD(I_OnAddGLine,OnAddZLine(86400, NULL, "Unless you're stuck in a time warp, you appear to be a bear bot!", user->MakeHostIP()));
  55                                         ServerInstance->XLines->ApplyLines();
  56                                 }
  57                                 else
  58                                         delete zl;
  59
  60                                 return 1;
  61                         }
  62
  63                         user->Shrink("antibear_timewait");
  64                         // Block the command, so the user doesn't receive a no such nick notice
  65                         return 1;
  66                 }
  67
  68                 return 0;
  69         }
  70
  71         virtual int OnUserRegister(User* user)
  72         {
  73                 user->WriteServ("439 %s :This server has anti-spambot mechanisms enabled.", user->nick);
  74                 user->WriteServ("931 %s :Malicious bots, spammers, and other automated systems of dubious origin are NOT welcome here.", user->nick);
  75                 user->WriteServ("PRIVMSG %s :\1TIME\1", user->nick);
  76                 user->Extend("antibear_timewait");
  77                 return 0;
  78         }
  79 };
  80
  81 MODULE_INIT(ModuleAntiBear)