src/modules/m_messageflood.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include <stdio.h>
  20 #include "users.h"
  21 #include "channels.h"
  22 #include "modules.h"
  23 #include "helperfuncs.h"
  24
  25 /* $ModDesc: Provides channel mode +f (message flood protection) */
  26
  27 class floodsettings
  28 {
  29         bool ban;
  30         int secs;
  31         int lines;
  32
  33         floodsettings() : ban(0), secs(0), lines(0) {};
  34         floodsettings(bool a, int b, int c) : ban(a), secs(b), lines(c) {};
  35 }
  36
  37 class ModuleMsgFlood : public Module
  38 {
  39         Server *Srv;
  40
  41  public:
  42
  43         ModuleMsgFlood(Server* Me)
  44                 : Module::Module(Me)
  45         {
  46                 Srv = Me;
  47                 Srv->AddExtendedMode('f',MT_CHANNEL,false,1,0);
  48         }
  49
  50         virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list &params)
  51         {
  52                 if ((modechar == 'f') && (type == MT_CHANNEL))
  53                 {
  54                         if (mode_on)
  55                         {
  56                                 std::string FloodParams = params[0];
  57                                 chanrec* c = (chanrec*)target;
  58                                 char data[MAXBUF];
  59                                 strlcpy(data,FloodParams.c_str(),MAXBUF);
  60                                 char* lines = data;
  61                                 char* secs = NULL;
  62                                 bool ban = false;
  63                                 if (*data == '*')
  64                                 {
  65                                         ban = true;
  66                                         data++;
  67                                 }
  68                                 else
  69                                 {
  70                                         ban = false;
  71                                 }
  72                                 while (*data)
  73                                 {
  74                                         if (*data == ':')
  75                                         {
  76                                                 *data = 0;
  77                                                 data++;
  78                                                 secs = data;
  79                                                 break;
  80                                         }
  81                                         else data++;
  82                                 }
  83                                 if (secs)
  84                                 {
  85                                         /* Set up the flood parameters for this channel */
  86                                         int nlines = atoi(lines);
  87                                         int nsecs = atoi(secs);
  88                                         if ((nlines<1) || (nsecs<1))
  89                                         {
  90                                                 WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name);
  91                                                 return 0;
  92                                         }
  93                                         else
  94                                         {
  95                                                 if (!c->GetExt("flood"))
  96                                                 {
  97                                                         floodsettings *f = new floodsettings(ban,nlines,nsecs);
  98                                                         c->Extend("flood",(char*)f);
  99                                                 }
 100                                         }
 101                                         return 1;
 102                                 }
 103                                 else
 104                                 {
 105                                         WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name);
 106                                         return 0;
 107                                 }
 108
 109                         }
 110                         else
 111                         {
 112                                 if (c->GetExt("flood"))
 113                                 {
 114                                         floodsettings *f = (floodsettings*)c->GetExt("flood");
 115                                         delete f;
 116                                         c->Shrink("flood");
 117                                 }
 118                         }
 119                         return 1;
 120                 }
 121                 return 0;
 122         }
 123
 124         void OnChannelDelete(chanrec* chan)
 125         {
 126                 if (c->GetExt("flood"))
 127                 {
 128                         floodsettings *f = (floodsettings*)c->GetExt("flood");
 129                         delete f;
 130                         c->Shrink("flood");
 131                 }
 132         }
 133
 134         void Implements(char* List)
 135         {
 136                 List[I_On005Numeric] = List[I_OnExtendedMode] = List[I_OnChannelDelete] = 1;
 137         }
 138
 139         virtual void On005Numeric(std::string &output)
 140         {
 141                 std::stringstream line(output);
 142                 std::string temp1, temp2;
 143                 while (!line.eof())
 144                 {
 145                         line >> temp1;
 146                         if (temp1.substr(0,10) == "CHANMODES=")
 147                         {
 148                                 // By doing this we're *assuming* no other module has fucked up the CHANMODES=
 149                                 // section of the 005 numeric. If they have, we're going DOWN in a blaze of glory,
 150                                 // with a honking great EXCEPTION :)
 151                                 temp1.insert(temp1.find(",")+1,"f");
 152                         }
 153                         temp2 = temp2 + temp1 + " ";
 154                 }
 155                 if (temp2.length())
 156                         output = temp2.substr(0,temp2.length()-1);
 157         }
 158
 159         virtual ~ModuleMsgFlood()
 160         {
 161         }
 162
 163         virtual Version GetVersion()
 164         {
 165                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
 166         }
 167 };
 168
 169
 170 class ModuleMsgFloodFactory : public ModuleFactory
 171 {
 172  public:
 173         ModuleMsgFloodFactory()
 174         {
 175         }
 176
 177         ~ModuleMsgFloodFactory()
 178         {
 179         }
 180
 181         virtual Module * CreateModule(Server* Me)
 182         {
 183                 return new ModuleMsgFlood(Me);
 184         }
 185
 186 };
 187
 188
 189 extern "C" void * init_module( void )
 190 {
 191         return new ModuleMsgFloodFactory;
 192 }
 193