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 #include "users.h"
  16 #include "channels.h"
  17 #include "modules.h"
  18
  19 /* $ModDesc: Forces connecting clients to send a PONG message back to the server before they can complete their connection */
  20
  21 class ModuleWaitPong : public Module
  22 {
  23         bool sendsnotice;
  24         bool killonbadreply;
  25         const char* extenstr;
  26
  27  public:
  28         ModuleWaitPong(InspIRCd* Me)
  29          : Module(Me), extenstr("waitpong_pingstr")
  30         {
  31                 OnRehash(NULL,"");
  32         }
  33
  34         virtual void OnRehash(userrec* user, const std::string &param)
  35         {
  36                 ConfigReader Conf(ServerInstance);
  37
  38                 sendsnotice = Conf.ReadFlag("waitpong", "sendsnotice", 0);
  39
  40                 if(Conf.GetError() == CONF_VALUE_NOT_FOUND)
  41                         sendsnotice = true;
  42
  43                 killonbadreply = Conf.ReadFlag("waitpong", "killonbadreply", 0);
  44
  45                 if(Conf.GetError() == CONF_VALUE_NOT_FOUND)
  46                         killonbadreply = true;
  47         }
  48
  49         void Implements(char* List)
  50         {
  51                 List[I_OnUserRegister] = List[I_OnCheckReady] = List[I_OnPreCommand] = List[I_OnRehash] = List[I_OnUserDisconnect] = List[I_OnCleanup] = 1;
  52         }
  53
  54         char* RandString(unsigned int length)
  55         {
  56                 unsigned char* out = new unsigned char[length+1];
  57                 for(unsigned int i = 0; i < length; i++)
  58                         out[i] = ((rand() % 26) + 65);
  59                 out[length] = '\0';
  60
  61                 return (char*)out;
  62         }
  63
  64         virtual int OnUserRegister(userrec* user)
  65         {
  66                 char* pingrpl = RandString(10);
  67
  68                 user->Write("PING :%s", pingrpl);
  69
  70                 if(sendsnotice)
  71                         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);
  72
  73                 user->Extend(extenstr, pingrpl);
  74                 return 0;
  75         }
  76
  77         virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec* user, bool validated, const std::string &original_line)
  78         {
  79                 if(command == "PONG")
  80                 {
  81                         char* pingrpl;
  82                         user->GetExt(extenstr, pingrpl);
  83
  84                         if(pingrpl)
  85                         {
  86                                 if(strcmp(pingrpl, parameters[0]) == 0)
  87                                 {
  88                                         DELETE(pingrpl);
  89                                         user->Shrink(extenstr);
  90                                         return 1;
  91                                 }
  92                                 else
  93                                 {
  94                                         if(killonbadreply)
  95                                                 userrec::QuitUser(ServerInstance, user, "Incorrect ping reply for registration");
  96                                         return 1;
  97                                 }
  98                         }
  99                 }
 100                 return 0;
 101         }
 102
 103         virtual bool OnCheckReady(userrec* user)
 104         {
 105                 char* pingrpl;
 106                 return (!user->GetExt(extenstr, pingrpl));
 107         }
 108
 109         virtual void OnUserDisconnect(userrec* user)
 110         {
 111                 char* pingrpl;
 112                 user->GetExt(extenstr, pingrpl);
 113
 114                 if(pingrpl)
 115                 {
 116                         DELETE(pingrpl);
 117                         user->Shrink(extenstr);
 118                 }
 119         }
 120
 121         virtual void OnCleanup(int target_type, void* item)
 122         {
 123                 if(target_type == TYPE_USER)
 124                 {
 125                         userrec* user = (userrec*)item;
 126                         char* pingrpl;
 127                         user->GetExt(extenstr, pingrpl);
 128
 129                         if(pingrpl)
 130                         {
 131                                 DELETE(pingrpl);
 132                                 user->Shrink(extenstr);
 133                         }
 134                 }
 135         }
 136
 137         virtual ~ModuleWaitPong()
 138         {
 139         }
 140
 141         virtual Version GetVersion()
 142         {
 143                 return Version(1, 1, 0, 1, VF_VENDOR, API_VERSION);
 144         }
 145
 146 };
 147
 148 MODULE_INIT(ModuleWaitPong)