src/modules/m_conn_waitpong.cpp

   1 #include <stdlib.h>
   2 #include <string>
   3 #include "aes.h"
   4 #include "users.h"
   5 #include "channels.h"
   6 #include "modules.h"
   7 #include "helperfuncs.h"
   8
   9 /* $ModDesc: Forces connecting clients to send a PONG message back to the server before they can complete their connection */
  10
  11 char* RandString(unsigned int length)
  12 {
  13         unsigned char* tmp = new unsigned char[(length/4)*3];
  14
  15         for(unsigned int i = 0; i < (length/4)*3; i++)
  16                 tmp[i] = (unsigned char)rand();
  17
  18         unsigned char* out = new unsigned char[length+1];
  19
  20         to64frombits(out, tmp, (length/4)*3);
  21
  22         out[length] = '\0';
  23
  24         delete tmp;
  25
  26         return (char*)out;
  27 }
  28
  29 class ModuleWaitPong : public Module
  30 {
  31         Server* Srv;
  32         ConfigReader* Conf;
  33
  34         bool sendsnotice;
  35         bool killonbadreply;
  36
  37  public:
  38         ModuleWaitPong(Server* Me)
  39                 : Module::Module(Me)
  40         {
  41                 Srv = Me;
  42                 OnRehash("");
  43         }
  44
  45         virtual void OnRehash(std::string param)
  46         {
  47                 Conf = new ConfigReader;
  48
  49                 sendsnotice = Conf->ReadFlag("waitpong", "sendsnotice", 0);
  50
  51                 if(Conf->GetError() == CONF_VALUE_NOT_FOUND)
  52                         sendsnotice = true;
  53
  54                 killonbadreply = Conf->ReadFlag("waitpong", "killonbadreply", 0);
  55
  56                 if(Conf->GetError() == CONF_VALUE_NOT_FOUND)
  57                         killonbadreply = true;
  58
  59                 delete Conf;
  60         }
  61
  62         void Implements(char* List)
  63         {
  64                 List[I_OnUserRegister] = List[I_OnCheckReady] = List[I_OnPreCommand] = List[I_OnRehash] = List[I_OnUserDisconnect] = List[I_OnCleanup] = 1;
  65         }
  66
  67         virtual void OnUserRegister(userrec* user)
  68         {
  69                 char* pingrpl = RandString(10);
  70
  71                 Write(user->fd, "PING :%s", pingrpl);
  72
  73                 if(sendsnotice)
  74                         WriteServ(user->fd, "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);
  75
  76                 user->Extend("waitpong_pingstr", pingrpl);
  77         }
  78
  79         virtual int OnPreCommand(std::string command, char** parameters, int pcnt,      userrec* user,  bool validated)
  80         {
  81                 if(command == "PONG")
  82                 {
  83                         char* pingrpl = user->GetExt("waitpong_pingstr");
  84
  85                         if(pingrpl && (strcmp(pingrpl, parameters[0]) == 0))
  86                         {
  87                                 delete pingrpl;
  88                                 user->Shrink("waitpong_pingstr");
  89                                 return 1;
  90                         }
  91                         else if(killonbadreply)
  92                         {
  93                                 Srv->QuitUser(user, "Incorrect ping reply for registration");
  94                                 return 1;
  95                         }
  96                 }
  97
  98                 return 0;
  99         }
 100
 101         virtual bool OnCheckReady(userrec* user)
 102         {
 103                 return (!user->GetExt("waitpong_pingstr"));
 104         }
 105
 106         virtual void OnUserDisconnect(userrec* user)
 107         {
 108                 char* pingrpl = user->GetExt("waitpong_pingstr");
 109
 110                 if(pingrpl)
 111                 {
 112                         delete pingrpl;
 113                         user->Shrink("waitpong_pingstr");
 114                 }
 115         }
 116
 117         virtual void OnCleanup(int target_type, void* item)
 118         {
 119                 if(target_type == TYPE_USER)
 120                 {
 121                         userrec* user = (userrec*)item;
 122                         char* pingrpl = user->GetExt("waitpong_pingstr");
 123
 124                         if(pingrpl)
 125                         {
 126                                 delete pingrpl;
 127                                 user->Shrink("waitpong_pingstr");
 128                         }
 129                 }
 130         }
 131
 132         virtual ~ModuleWaitPong()
 133         {
 134         }
 135
 136         virtual Version GetVersion()
 137         {
 138                 return Version(1, 0, 0, 1, VF_VENDOR);
 139         }
 140
 141 };
 142
 143 class ModuleWaitPongFactory : public ModuleFactory
 144 {
 145  public:
 146         ModuleWaitPongFactory()
 147         {
 148         }
 149
 150         ~ModuleWaitPongFactory()
 151         {
 152         }
 153
 154         virtual Module * CreateModule(Server* Me)
 155         {
 156                 return new ModuleWaitPong(Me);
 157         }
 158 };
 159
 160
 161 extern "C" void * init_module( void )
 162 {
 163         return new ModuleWaitPongFactory;
 164 }