src/modules/m_conn_waitpong.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
  16 /* $ModDesc: Forces connecting clients to send a PONG message back to the server before they can complete their connection */
  17
  18 class ModuleWaitPong : public Module
  19 {
  20         bool sendsnotice;
  21         bool killonbadreply;
  22         const char* extenstr;
  23
  24  public:
  25         ModuleWaitPong(InspIRCd* Me)
  26          : Module(Me), extenstr("waitpong_pingstr")
  27         {
  28                 OnRehash(NULL,"");
  29                 Implementation eventlist[] = { I_OnUserRegister, I_OnCheckReady, I_OnPreCommand, I_OnRehash, I_OnUserDisconnect, I_OnCleanup };
  30                 ServerInstance->Modules->Attach(eventlist, this, 6);
  31         }
  32
  33         virtual void OnRehash(User* user, const std::string &param)
  34         {
  35                 ConfigReader Conf(ServerInstance);
  36
  37                 sendsnotice = Conf.ReadFlag("waitpong", "sendsnotice", 0);
  38
  39                 if(Conf.GetError() == CONF_VALUE_NOT_FOUND)
  40                         sendsnotice = true;
  41
  42                 killonbadreply = Conf.ReadFlag("waitpong", "killonbadreply", 0);
  43
  44                 if(Conf.GetError() == CONF_VALUE_NOT_FOUND)
  45                         killonbadreply = true;
  46         }
  47
  48
  49         char* RandString(unsigned int length)
  50         {
  51                 unsigned char* out = new unsigned char[length+1];
  52                 for(unsigned int i = 0; i < length; i++)
  53                         out[i] = ((rand() % 26) + 65);
  54                 out[length] = '\0';
  55
  56                 return (char*)out;
  57         }
  58
  59         virtual int OnUserRegister(User* user)
  60         {
  61                 char* pingrpl = RandString(10);
  62
  63                 user->Write("PING :%s", pingrpl);
  64
  65                 if(sendsnotice)
  66                         user->WriteServ("NOTICE %s :*** If you are having problems connecting due to ping timeouts, please type /quote PONG %s or /raw PONG %s now.", user->nick.c_str(), pingrpl, pingrpl);
  67
  68                 user->Extend(extenstr, pingrpl);
  69                 return 0;
  70         }
  71
  72         virtual int OnPreCommand(std::string &command, std::vector<std::string> &parameters, User* user, bool validated, const std::string &original_line)
  73         {
  74                 if (command == "PONG")
  75                 {
  76                         char* pingrpl;
  77                         user->GetExt(extenstr, pingrpl);
  78
  79                         if (pingrpl)
  80                         {
  81                                 if (strcmp(pingrpl, parameters[0].c_str()) == 0)
  82                                 {
  83                                         delete[] pingrpl;
  84                                         user->Shrink(extenstr);
  85                                         return 1;
  86                                 }
  87                                 else
  88                                 {
  89                                         if(killonbadreply)
  90                                                 ServerInstance->Users->QuitUser(user, "Incorrect ping reply for registration");
  91                                         return 1;
  92                                 }
  93                         }
  94                 }
  95                 return 0;
  96         }
  97
  98         virtual bool OnCheckReady(User* user)
  99         {
 100                 char* pingrpl;
 101                 return (!user->GetExt(extenstr, pingrpl));
 102         }
 103
 104         virtual void OnUserDisconnect(User* user)
 105         {
 106                 char* pingrpl;
 107                 user->GetExt(extenstr, pingrpl);
 108
 109                 if (pingrpl)
 110                 {
 111                         delete[] pingrpl;
 112                         user->Shrink(extenstr);
 113                 }
 114         }
 115
 116         virtual void OnCleanup(int target_type, void* item)
 117         {
 118                 if (target_type == TYPE_USER)
 119                 {
 120                         User* user = (User*)item;
 121                         char* pingrpl;
 122                         user->GetExt(extenstr, pingrpl);
 123
 124                         if (pingrpl)
 125                         {
 126                                 delete[] pingrpl;
 127                                 user->Shrink(extenstr);
 128                         }
 129                 }
 130         }
 131
 132         virtual ~ModuleWaitPong()
 133         {
 134         }
 135
 136         virtual Version GetVersion()
 137         {
 138                 return Version("$Id$", VF_VENDOR, API_VERSION);
 139         }
 140
 141 };
 142
 143 MODULE_INIT(ModuleWaitPong)