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 <stdlib.h>
  15 #include <string>
  16 #include "users.h"
  17 #include "channels.h"
  18 #include "modules.h"
  19
  20 #include "inspircd.h"
  21
  22 /* $ModDesc: Forces connecting clients to send a PONG message back to the server before they can complete their connection */
  23
  24
  25
  26 char* RandString(unsigned int length)
  27 {
  28         unsigned char* out = new unsigned char[length+1];
  29         for(unsigned int i = 0; i < length; i++)
  30                 out[i] = ((rand() % 26) + 65);
  31         out[length] = '\0';
  32
  33         return (char*)out;
  34 }
  35
  36 class ModuleWaitPong : public Module
  37 {
  38
  39         ConfigReader* Conf;
  40
  41         bool sendsnotice;
  42         bool killonbadreply;
  43
  44  public:
  45         ModuleWaitPong(InspIRCd* Me)
  46                 : Module::Module(Me)
  47         {
  48                 OnRehash(NULL,"");
  49         }
  50
  51         virtual void OnRehash(userrec* user, const std::string &param)
  52         {
  53                 Conf = new ConfigReader(ServerInstance);
  54
  55                 sendsnotice = Conf->ReadFlag("waitpong", "sendsnotice", 0);
  56
  57                 if(Conf->GetError() == CONF_VALUE_NOT_FOUND)
  58                         sendsnotice = true;
  59
  60                 killonbadreply = Conf->ReadFlag("waitpong", "killonbadreply", 0);
  61
  62                 if(Conf->GetError() == CONF_VALUE_NOT_FOUND)
  63                         killonbadreply = true;
  64
  65                 DELETE(Conf);
  66         }
  67
  68         void Implements(char* List)
  69         {
  70                 List[I_OnUserRegister] = List[I_OnCheckReady] = List[I_OnPreCommand] = List[I_OnRehash] = List[I_OnUserDisconnect] = List[I_OnCleanup] = 1;
  71         }
  72
  73         virtual int OnUserRegister(userrec* user)
  74         {
  75                 char* pingrpl = RandString(10);
  76
  77                 user->Write("PING :%s", pingrpl);
  78
  79                 if(sendsnotice)
  80                         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);
  81
  82                 user->Extend("waitpong_pingstr", pingrpl);
  83                 return 0;
  84         }
  85
  86         virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec* user, bool validated, const std::string &original_line)
  87         {
  88                 if(command == "PONG")
  89                 {
  90                         char* pingrpl;
  91                         user->GetExt("waitpong_pingstr", pingrpl);
  92
  93                         if(pingrpl)
  94                         {
  95                                 if(strcmp(pingrpl, parameters[0]) == 0)
  96                                 {
  97                                         DELETE(pingrpl);
  98                                         user->Shrink("waitpong_pingstr");
  99                                         return 1;
 100                                 }
 101                                 else
 102                                 {
 103                                         if(killonbadreply)
 104                                                 userrec::QuitUser(ServerInstance, user, "Incorrect ping reply for registration");
 105                                         return 1;
 106                                 }
 107                         }
 108                 }
 109
 110                 return 0;
 111         }
 112
 113         virtual bool OnCheckReady(userrec* user)
 114         {
 115                 char* pingrpl;
 116                 return (!user->GetExt("waitpong_pingstr", pingrpl));
 117         }
 118
 119         virtual void OnUserDisconnect(userrec* user)
 120         {
 121                 char* pingrpl;
 122                 user->GetExt("waitpong_pingstr", pingrpl);
 123
 124                 if(pingrpl)
 125                 {
 126                         DELETE(pingrpl);
 127                         user->Shrink("waitpong_pingstr");
 128                 }
 129         }
 130
 131         virtual void OnCleanup(int target_type, void* item)
 132         {
 133                 if(target_type == TYPE_USER)
 134                 {
 135                         userrec* user = (userrec*)item;
 136                         char* pingrpl;
 137                         user->GetExt("waitpong_pingstr", pingrpl);
 138
 139                         if(pingrpl)
 140                         {
 141                                 DELETE(pingrpl);
 142                                 user->Shrink("waitpong_pingstr");
 143                         }
 144                 }
 145         }
 146
 147         virtual ~ModuleWaitPong()
 148         {
 149         }
 150
 151         virtual Version GetVersion()
 152         {
 153                 return Version(1, 1, 0, 1, VF_VENDOR, API_VERSION);
 154         }
 155
 156 };
 157
 158 class ModuleWaitPongFactory : public ModuleFactory
 159 {
 160  public:
 161         ModuleWaitPongFactory()
 162         {
 163         }
 164
 165         ~ModuleWaitPongFactory()
 166         {
 167         }
 168
 169         virtual Module * CreateModule(InspIRCd* Me)
 170         {
 171                 return new ModuleWaitPong(Me);
 172         }
 173 };
 174
 175
 176 extern "C" void * init_module( void )
 177 {
 178         return new ModuleWaitPongFactory;
 179 }