src/modules/m_conn_waitpong.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
  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         }
  30
  31         virtual void OnRehash(userrec* user, const std::string &param)
  32         {
  33                 ConfigReader Conf(ServerInstance);
  34
  35                 sendsnotice = Conf.ReadFlag("waitpong", "sendsnotice", 0);
  36
  37                 if(Conf.GetError() == CONF_VALUE_NOT_FOUND)
  38                         sendsnotice = true;
  39
  40                 killonbadreply = Conf.ReadFlag("waitpong", "killonbadreply", 0);
  41
  42                 if(Conf.GetError() == CONF_VALUE_NOT_FOUND)
  43                         killonbadreply = true;
  44         }
  45
  46         void Implements(char* List)
  47         {
  48                 List[I_OnUserRegister] = List[I_OnCheckReady] = List[I_OnPreCommand] = List[I_OnRehash] = List[I_OnUserDisconnect] = List[I_OnCleanup] = 1;
  49         }
  50
  51         char* RandString(unsigned int length)
  52         {
  53                 unsigned char* out = new unsigned char[length+1];
  54                 for(unsigned int i = 0; i < length; i++)
  55                         out[i] = ((rand() % 26) + 65);
  56                 out[length] = '\0';
  57
  58                 return (char*)out;
  59         }
  60
  61         virtual int OnUserRegister(userrec* user)
  62         {
  63                 char* pingrpl = RandString(10);
  64
  65                 user->Write("PING :%s", pingrpl);
  66
  67                 if(sendsnotice)
  68                         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, pingrpl, pingrpl);
  69
  70                 user->Extend(extenstr, pingrpl);
  71                 return 0;
  72         }
  73
  74         virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec* user, bool validated, const std::string &original_line)
  75         {
  76                 if (command == "PONG")
  77                 {
  78                         char* pingrpl;
  79                         user->GetExt(extenstr, pingrpl);
  80
  81                         if (pingrpl)
  82                         {
  83                                 if (strcmp(pingrpl, parameters[0]) == 0)
  84                                 {
  85                                         delete[] pingrpl;
  86                                         user->Shrink(extenstr);
  87                                         return 1;
  88                                 }
  89                                 else
  90                                 {
  91                                         if(killonbadreply)
  92                                                 userrec::QuitUser(ServerInstance, user, "Incorrect ping reply for registration");
  93                                         return 1;
  94                                 }
  95                         }
  96                 }
  97                 return 0;
  98         }
  99
 100         virtual bool OnCheckReady(userrec* user)
 101         {
 102                 char* pingrpl;
 103                 return (!user->GetExt(extenstr, pingrpl));
 104         }
 105
 106         virtual void OnUserDisconnect(userrec* user)
 107         {
 108                 char* pingrpl;
 109                 user->GetExt(extenstr, pingrpl);
 110
 111                 if (pingrpl)
 112                 {
 113                         delete[] pingrpl;
 114                         user->Shrink(extenstr);
 115                 }
 116         }
 117
 118         virtual void OnCleanup(int target_type, void* item)
 119         {
 120                 if (target_type == TYPE_USER)
 121                 {
 122                         userrec* user = (userrec*)item;
 123                         char* pingrpl;
 124                         user->GetExt(extenstr, pingrpl);
 125
 126                         if (pingrpl)
 127                         {
 128                                 delete[] pingrpl;
 129                                 user->Shrink(extenstr);
 130                         }
 131                 }
 132         }
 133
 134         virtual ~ModuleWaitPong()
 135         {
 136         }
 137
 138         virtual Version GetVersion()
 139         {
 140                 return Version(1, 1, 0, 1, VF_VENDOR, API_VERSION);
 141         }
 142
 143 };
 144
 145 MODULE_INIT(ModuleWaitPong)