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
   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
  13
  14 char* RandString(unsigned int length)
  15 {
  16         unsigned char* tmp = new unsigned char[(length/4)*3];
  17
  18         for(unsigned int i = 0; i < (length/4)*3; i++)
  19                 tmp[i] = (unsigned char)rand();
  20
  21         unsigned char* out = new unsigned char[length+1];
  22
  23         to64frombits(out, tmp, (length/4)*3);
  24
  25         out[length] = '\0';
  26
  27         DELETE(tmp);
  28
  29         return (char*)out;
  30 }
  31
  32 class ModuleWaitPong : public Module
  33 {
  34
  35         ConfigReader* Conf;
  36
  37         bool sendsnotice;
  38         bool killonbadreply;
  39
  40  public:
  41         ModuleWaitPong(InspIRCd* Me)
  42                 : Module::Module(Me)
  43         {
  44
  45                 OnRehash("");
  46         }
  47
  48         virtual void OnRehash(const std::string &param)
  49         {
  50                 Conf = new ConfigReader(ServerInstance);
  51
  52                 sendsnotice = Conf->ReadFlag("waitpong", "sendsnotice", 0);
  53
  54                 if(Conf->GetError() == CONF_VALUE_NOT_FOUND)
  55                         sendsnotice = true;
  56
  57                 killonbadreply = Conf->ReadFlag("waitpong", "killonbadreply", 0);
  58
  59                 if(Conf->GetError() == CONF_VALUE_NOT_FOUND)
  60                         killonbadreply = true;
  61
  62                 DELETE(Conf);
  63         }
  64
  65         void Implements(char* List)
  66         {
  67                 List[I_OnUserRegister] = List[I_OnCheckReady] = List[I_OnPreCommand] = List[I_OnRehash] = List[I_OnUserDisconnect] = List[I_OnCleanup] = 1;
  68         }
  69
  70         virtual int OnUserRegister(userrec* user)
  71         {
  72                 char* pingrpl = RandString(10);
  73
  74                 user->Write("PING :%s", pingrpl);
  75
  76                 if(sendsnotice)
  77                         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);
  78
  79                 user->Extend("waitpong_pingstr", pingrpl);
  80                 return 0;
  81         }
  82
  83         virtual int OnPreCommand(const std::string &command, const char** parameters, int pcnt, userrec* user, bool validated, const std::string &original_line)
  84         {
  85                 if(command == "PONG")
  86                 {
  87                         char* pingrpl;
  88                         user->GetExt("waitpong_pingstr", pingrpl);
  89
  90                         if(pingrpl)
  91                         {
  92                                 if(strcmp(pingrpl, parameters[0]) == 0)
  93                                 {
  94                                         DELETE(pingrpl);
  95                                         user->Shrink("waitpong_pingstr");
  96                                         return 1;
  97                                 }
  98                                 else
  99                                 {
 100                                         if(killonbadreply)
 101                                                 userrec::QuitUser(ServerInstance, user, "Incorrect ping reply for registration");
 102                                         return 1;
 103                                 }
 104                         }
 105                 }
 106
 107                 return 0;
 108         }
 109
 110         virtual bool OnCheckReady(userrec* user)
 111         {
 112                 char* pingrpl;
 113                 return (!user->GetExt("waitpong_pingstr", pingrpl));
 114         }
 115
 116         virtual void OnUserDisconnect(userrec* user)
 117         {
 118                 char* pingrpl;
 119                 user->GetExt("waitpong_pingstr", pingrpl);
 120
 121                 if(pingrpl)
 122                 {
 123                         DELETE(pingrpl);
 124                         user->Shrink("waitpong_pingstr");
 125                 }
 126         }
 127
 128         virtual void OnCleanup(int target_type, void* item)
 129         {
 130                 if(target_type == TYPE_USER)
 131                 {
 132                         userrec* user = (userrec*)item;
 133                         char* pingrpl;
 134                         user->GetExt("waitpong_pingstr", pingrpl);
 135
 136                         if(pingrpl)
 137                         {
 138                                 DELETE(pingrpl);
 139                                 user->Shrink("waitpong_pingstr");
 140                         }
 141                 }
 142         }
 143
 144         virtual ~ModuleWaitPong()
 145         {
 146         }
 147
 148         virtual Version GetVersion()
 149         {
 150                 return Version(1, 1, 0, 1, VF_VENDOR, API_VERSION);
 151         }
 152
 153 };
 154
 155 class ModuleWaitPongFactory : public ModuleFactory
 156 {
 157  public:
 158         ModuleWaitPongFactory()
 159         {
 160         }
 161
 162         ~ModuleWaitPongFactory()
 163         {
 164         }
 165
 166         virtual Module * CreateModule(InspIRCd* Me)
 167         {
 168                 return new ModuleWaitPong(Me);
 169         }
 170 };
 171
 172
 173 extern "C" void * init_module( void )
 174 {
 175         return new ModuleWaitPongFactory;
 176 }