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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
using namespace std;
#include <stdio.h>
#include <map>
#include "users.h"
#include "channels.h"
#include "modules.h"
#include "helperfuncs.h"
/* $ModDesc: Provides channel mode +f (message flood protection) */
class joinfloodsettings
{
public:
int secs;
int joins;
time_t reset;
time_t unlocktime;
int counter;
bool locked;
joinfloodsettings() : secs(0), joins(0) {};
joinfloodsettings(int b, int c) : secs(b), joins(c)
{
reset = time(NULL) + secs;
counter = 0;
locked = false;
log(DEBUG,"Create new joinfloodsettings: %lu %lu",time(NULL),reset);
};
void addjoin()
{
counter++;
log(DEBUG,"joinflood counter is %d",counter);
if (time(NULL) > reset)
{
log(DEBUG,"joinflood counter reset");
counter = 0;
reset = time(NULL) + secs;
}
}
bool shouldlock()
{
return (counter >= this->joins);
}
void clear()
{
log(DEBUG,"joinflood counter clear");
counter = 0;
}
bool islocked()
{
if (locked)
{
if (time(NULL) > unlocktime)
{
locked = false;
return false;
}
else
{
return true;
}
}
return false;
}
void lock()
{
log(DEBUG,"joinflood lock");
locked = true;
unlocktime = time(NULL) + 60;
}
};
class ModuleJoinFlood : public Module
{
Server *Srv;
public:
ModuleJoinFlood(Server* Me)
: Module::Module(Me)
{
Srv = Me;
Srv->AddExtendedMode('j',MT_CHANNEL,false,1,0);
}
virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms)
{
if ((modechar == 'j') && (type == MT_CHANNEL))
{
if (mode_on)
{
std::string FloodParams = params[0];
chanrec* c = (chanrec*)target;
char ndata[MAXBUF];
char* data = ndata;
strlcpy(ndata,FloodParams.c_str(),MAXBUF);
char* joins = data;
char* secs = NULL;
while (*data)
{
if (*data == ':')
{
*data = 0;
data++;
secs = data;
break;
}
else data++;
}
if (secs)
{
/* Set up the flood parameters for this channel */
int njoins = atoi(joins);
int nsecs = atoi(secs);
if ((njoins<1) || (nsecs<1))
{
WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name);
return 0;
}
else
{
if (!c->GetExt("joinflood"))
{
joinfloodsettings *f = new joinfloodsettings(nsecs,njoins);
c->Extend("joinflood",(char*)f);
}
}
return 1;
}
else
{
WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name);
return 0;
}
}
else
{
chanrec* c = (chanrec*)target;
if (c->GetExt("joinflood"))
{
joinfloodsettings *f = (joinfloodsettings*)c->GetExt("joinflood");
delete f;
c->Shrink("joinflood");
}
}
return 1;
}
return 0;
}
virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
{
if (chan)
{
joinfloodsettings *f = (joinfloodsettings*)chan->GetExt("joinflood");
if (f)
{
if (f->islocked())
{
WriteServ(user->fd,"609 %s %s :This channel is temporarily unavailable (+j). Please try again later.",user->nick,chan->name);
return 1;
}
}
}
return 0;
}
virtual void OnUserJoin(userrec* user, chanrec* channel)
{
joinfloodsettings *f = (joinfloodsettings*)channel->GetExt("joinflood");
if (f)
{
f->addjoin();
if (f->shouldlock())
{
f->clear();
f->lock();
WriteChannelWithServ((char*)Srv->GetServerName().c_str(), channel, "NOTICE %s :This channel has been closed to new users for 60 seconds because there have been more than %d joins in %d seconds.",channel->name,f->joins,f->secs);
}
}
}
void OnChannelDelete(chanrec* chan)
{
if (chan->GetExt("joinflood"))
{
joinfloodsettings *f = (joinfloodsettings*)chan->GetExt("joinflood");
delete f;
chan->Shrink("joinflood");
}
}
void Implements(char* List)
{
List[I_On005Numeric] = List[I_OnExtendedMode] = List[I_OnChannelDelete] = List[I_OnUserPreJoin] = List[I_OnUserJoin] = 1;
}
virtual void On005Numeric(std::string &output)
{
InsertMode(output, "j", 3);
}
virtual ~ModuleJoinFlood()
{
}
virtual Version GetVersion()
{
return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
}
};
class ModuleJoinFloodFactory : public ModuleFactory
{
public:
ModuleJoinFloodFactory()
{
}
~ModuleJoinFloodFactory()
{
}
virtual Module * CreateModule(Server* Me)
{
return new ModuleJoinFlood(Me);
}
};
extern "C" void * init_module( void )
{
return new ModuleJoinFloodFactory;
}
|
