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 #include "inspircd.h"
   9
  10 /* $ModDesc: Forces connecting clients to send a PONG message back to the server before they can complete their connection */
  11
  12 char* RandString(unsigned int length)
  13 {
  14         unsigned char* tmp = new unsigned char[(length/4)*3];
  15
  16         for(unsigned int i = 0; i < (length/4)*3; i++)
  17                 tmp[i] = (unsigned char)rand();
  18
  19         unsigned char* out = new unsigned char[length+1];
  20
  21         to64frombits(out, tmp, (length/4)*3);
  22
  23         out[length] = '\0';
  24
  25         DELETE(tmp);
  26
  27         return (char*)out;
  28 }
  29
  30 class ModuleWaitPong : public Module
  31 {
  32         Server* Srv;
  33         ConfigReader* Conf;
  34
  35         bool sendsnotice;
  36         bool killonbadreply;
  37
  38  public:
  39         ModuleWaitPong(Server* Me)
  40                 : Module::Module(Me)
  41         {
  42                 Srv = Me;
  43                 OnRehash("");
  44         }
  45
  46         virtual void OnRehash(const std::string &param)
  47         {
  48                 Conf = new ConfigReader;
  49
  50                 sendsnotice = Conf->ReadFlag("waitpong", "sendsnotice", 0);
  51
  52                 if(Conf->GetError() == CONF_VALUE_NOT_FOUND)
  53                         sendsnotice = true;
  54
  55                 killonbadreply = Conf->ReadFlag("waitpong", "killonbadreply", 0);
  56
  57                 if(Conf->GetError() == CONF_VALUE_NOT_FOUND)
  58                         killonbadreply = true;
  59
  60                 DELETE(Conf);
  61         }
  62
  63         void Implements(char* List)
  64         {
  65                 List[I_OnUserRegister] = List[I_OnCheckReady] = List[I_OnPreCommand] = List[I_OnRehash] = List[I_OnUserDisconnect] = List[I_OnCleanup] = 1;
  66         }
  67
  68         virtual void OnUserRegister(userrec* user)
  69         {
  70                 char* pingrpl = RandString(10);
  71
  72                 user->Write("PING :%s", pingrpl);
  73
  74                 if(sendsnotice)
  75                         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);
  76
  77                 user->Extend("waitpong_pingstr", pingrpl);
  78         }
  79
  80         virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec* user, bool validated)
  81         {
  82                 if(command == "PONG")
  83                 {
  84                         char* pingrpl;
  85                         user->GetExt("waitpong_pingstr", pingrpl);
  86
  87                         if(pingrpl)
  88                         {
  89                                 if(strcmp(pingrpl, parameters[0]) == 0)
  90                                 {
  91                                         DELETE(pingrpl);
  92                                         user->Shrink("waitpong_pingstr");
  93                                         return 1;
  94                                 }
  95                                 else
  96                                 {
  97                                         if(killonbadreply)
  98                                                 userrec::QuitUser(user, "Incorrect ping reply for registration");
  99                                         return 1;
 100                                 }
 101                         }
 102                 }
 103
 104                 return 0;
 105         }
 106
 107         virtual bool OnCheckReady(userrec* user)
 108         {
 109                 char* pingrpl;
 110                 return (!user->GetExt("waitpong_pingstr", pingrpl));
 111         }
 112
 113         virtual void OnUserDisconnect(userrec* user)
 114         {
 115                 char* pingrpl;
 116                 user->GetExt("waitpong_pingstr", pingrpl);
 117
 118                 if(pingrpl)
 119                 {
 120                         DELETE(pingrpl);
 121                         user->Shrink("waitpong_pingstr");
 122                 }
 123         }
 124
 125         virtual void OnCleanup(int target_type, void* item)
 126         {
 127                 if(target_type == TYPE_USER)
 128                 {
 129                         userrec* user = (userrec*)item;
 130                         char* pingrpl;
 131                         user->GetExt("waitpong_pingstr", pingrpl);
 132
 133                         if(pingrpl)
 134                         {
 135                                 DELETE(pingrpl);
 136                                 user->Shrink("waitpong_pingstr");
 137                         }
 138                 }
 139         }
 140
 141         virtual ~ModuleWaitPong()
 142         {
 143         }
 144
 145         virtual Version GetVersion()
 146         {
 147                 return Version(1, 0, 0, 1, VF_VENDOR);
 148         }
 149
 150 };
 151
 152 class ModuleWaitPongFactory : public ModuleFactory
 153 {
 154  public:
 155         ModuleWaitPongFactory()
 156         {
 157         }
 158
 159         ~ModuleWaitPongFactory()
 160         {
 161         }
 162
 163         virtual Module * CreateModule(Server* Me)
 164         {
 165                 return new ModuleWaitPong(Me);
 166         }
 167 };
 168
 169
 170 extern "C" void * init_module( void )
 171 {
 172         return new ModuleWaitPongFactory;
 173 }