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(const 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(const 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)
  86                         {
  87                                 if(strcmp(pingrpl, parameters[0]) == 0)
  88                                 {
  89                                         delete pingrpl;
  90                                         user->Shrink("waitpong_pingstr");
  91                                         return 1;
  92                                 }
  93                                 else
  94                                 {
  95                                         if(killonbadreply)
  96                                                 Srv->QuitUser(user, "Incorrect ping reply for registration");
  97                                         return 1;
  98                                 }
  99                         }
 100                 }
 101
 102                 return 0;
 103         }
 104
 105         virtual bool OnCheckReady(userrec* user)
 106         {
 107                 return (!user->GetExt("waitpong_pingstr"));
 108         }
 109
 110         virtual void OnUserDisconnect(userrec* user)
 111         {
 112                 char* pingrpl = user->GetExt("waitpong_pingstr");
 113
 114                 if(pingrpl)
 115                 {
 116                         delete pingrpl;
 117                         user->Shrink("waitpong_pingstr");
 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 = user->GetExt("waitpong_pingstr");
 127
 128                         if(pingrpl)
 129                         {
 130                                 delete pingrpl;
 131                                 user->Shrink("waitpong_pingstr");
 132                         }
 133                 }
 134         }
 135
 136         virtual ~ModuleWaitPong()
 137         {
 138         }
 139
 140         virtual Version GetVersion()
 141         {
 142                 return Version(1, 0, 0, 1, VF_VENDOR);
 143         }
 144
 145 };
 146
 147 class ModuleWaitPongFactory : public ModuleFactory
 148 {
 149  public:
 150         ModuleWaitPongFactory()
 151         {
 152         }
 153
 154         ~ModuleWaitPongFactory()
 155         {
 156         }
 157
 158         virtual Module * CreateModule(Server* Me)
 159         {
 160                 return new ModuleWaitPong(Me);
 161         }
 162 };
 163
 164
 165 extern "C" void * init_module( void )
 166 {
 167         return new ModuleWaitPongFactory;
 168 }