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                 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         void Implements(char* List)
  49         {
  50                 List[I_OnUserRegister] = List[I_OnCheckReady] = List[I_OnPreCommand] = List[I_OnRehash] = List[I_OnUserDisconnect] = List[I_OnCleanup] = 1;
  51         }
  52
  53         char* RandString(unsigned int length)
  54         {
  55                 unsigned char* out = new unsigned char[length+1];
  56                 for(unsigned int i = 0; i < length; i++)
  57                         out[i] = ((rand() % 26) + 65);
  58                 out[length] = '\0';
  59
  60                 return (char*)out;
  61         }
  62
  63         virtual int OnUserRegister(User* user)
  64         {
  65                 char* pingrpl = RandString(10);
  66
  67                 user->Write("PING :%s", pingrpl);
  68
  69                 if(sendsnotice)
  70                         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);
  71
  72                 user->Extend(extenstr, pingrpl);
  73                 return 0;
  74         }
  75
  76         virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, User* user, bool validated, const std::string &original_line)
  77         {
  78                 if (command == "PONG")
  79                 {
  80                         char* pingrpl;
  81                         user->GetExt(extenstr, pingrpl);
  82
  83                         if (pingrpl)
  84                         {
  85                                 if (strcmp(pingrpl, parameters[0]) == 0)
  86                                 {
  87                                         delete[] pingrpl;
  88                                         user->Shrink(extenstr);
  89                                         return 1;
  90                                 }
  91                                 else
  92                                 {
  93                                         if(killonbadreply)
  94                                                 User::QuitUser(ServerInstance, user, "Incorrect ping reply for registration");
  95                                         return 1;
  96                                 }
  97                         }
  98                 }
  99                 return 0;
 100         }
 101
 102         virtual bool OnCheckReady(User* user)
 103         {
 104                 char* pingrpl;
 105                 return (!user->GetExt(extenstr, pingrpl));
 106         }
 107
 108         virtual void OnUserDisconnect(User* user)
 109         {
 110                 char* pingrpl;
 111                 user->GetExt(extenstr, pingrpl);
 112
 113                 if (pingrpl)
 114                 {
 115                         delete[] pingrpl;
 116                         user->Shrink(extenstr);
 117                 }
 118         }
 119
 120         virtual void OnCleanup(int target_type, void* item)
 121         {
 122                 if (target_type == TYPE_USER)
 123                 {
 124                         User* user = (User*)item;
 125                         char* pingrpl;
 126                         user->GetExt(extenstr, pingrpl);
 127
 128                         if (pingrpl)
 129                         {
 130                                 delete[] pingrpl;
 131                                 user->Shrink(extenstr);
 132                         }
 133                 }
 134         }
 135
 136         virtual ~ModuleWaitPong()
 137         {
 138         }
 139
 140         virtual Version GetVersion()
 141         {
 142                 return Version(1, 1, 0, 1, VF_VENDOR, API_VERSION);
 143         }
 144
 145 };
 146
 147 MODULE_INIT(ModuleWaitPong)