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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 floodsettings
{
public:
bool ban;
int secs;
int lines;
time_t reset;
std::map<userrec*,int> counters;
floodsettings() : ban(0), secs(0), lines(0) {};
floodsettings(bool a, int b, int c) : ban(a), secs(b), lines(c)
{
reset = time(NULL) + secs;
log(DEBUG,"Create new floodsettings: %lu %lu",time(NULL),reset);
};
void addmessage(userrec* who)
{
std::map<userrec*,int>::iterator iter = counters.find(who);
if (iter != counters.end())
{
iter->second++;
log(DEBUG,"Count for %s is now %d",who->nick,iter->second);
}
else
{
counters[who] = 1;
log(DEBUG,"Count for %s is now *1*",who->nick);
}
if (time(NULL) > reset)
{
log(DEBUG,"floodsettings timer Resetting.");
counters.clear();
reset = time(NULL) + secs;
}
}
bool shouldkick(userrec* who)
{
std::map<userrec*,int>::iterator iter = counters.find(who);
if (iter != counters.end())
{
log(DEBUG,"should kick? %d, %d",iter->second,this->lines);
return (iter->second >= this->lines);
}
else return false;
}
void clear(userrec* who)
{
std::map<userrec*,int>::iterator iter = counters.find(who);
if (iter != counters.end())
{
counters.erase(iter);
}
}
};
class ModuleMsgFlood : public Module
{
Server *Srv;
public:
ModuleMsgFlood(Server* Me)
: Module::Module(Me)
{
Srv = Me;
Srv->AddExtendedMode('f',MT_CHANNEL,false,1,0);
}
virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms)
{
if ((modechar == 'f') && (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* lines = data;
char* secs = NULL;
bool ban = false;
if (*data == '*')
{
ban = true;
lines++;
}
else
{
ban = false;
}
while (*data)
{
if (*data == ':')
{
*data = 0;
data++;
secs = data;
break;
}
else data++;
}
if (secs)
{
/* Set up the flood parameters for this channel */
int nlines = atoi(lines);
int nsecs = atoi(secs);
if ((nlines<1) || (nsecs<1))
{
WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name);
return 0;
}
else
{
if (!c->GetExt("flood"))
{
floodsettings *f = new floodsettings(ban,nlines,nsecs);
c->Extend("flood",(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("flood"))
{
floodsettings *f = (floodsettings*)c->GetExt("flood");
delete f;
c->Shrink("flood");
}
}
return 1;
}
return 0;
}
void ProcessMessages(userrec* user,chanrec* dest, const std::string &text)
{
if (IS_LOCAL(user))
{
floodsettings *f = (floodsettings*)dest->GetExt("flood");
if (f)
{
f->addmessage(user);
if (f->shouldkick(user))
{
/* Youre outttta here! */
f->clear(user);
if (f->ban)
{
char* parameters[3];
parameters[0] = dest->name;
parameters[1] = "+b";
parameters[2] = user->MakeWildHost();
Srv->SendMode(parameters,3,user);
}
Srv->KickUser(NULL, user, dest, "Channel flood triggered (mode +f)");
}
}
}
}
virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status)
{
if (target_type == TYPE_CHANNEL)
{
ProcessMessages(user,(chanrec*)dest,text);
}
}
virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status)
{
if (target_type == TYPE_CHANNEL)
{
ProcessMessages(user,(chanrec*)dest,text);
}
}
void OnChannelDelete(chanrec* chan)
{
if (chan->GetExt("flood"))
{
floodsettings *f = (floodsettings*)chan->GetExt("flood");
delete f;
chan->Shrink("flood");
}
}
void Implements(char* List)
{
List[I_On005Numeric] = List[I_OnExtendedMode] = List[I_OnChannelDelete] = List[I_OnUserNotice] = List[I_OnUserMessage] = 1;
}
virtual void On005Numeric(std::string &output)
{
InsertMode(output, "f", 3);
}
virtual ~ModuleMsgFlood()
{
}
virtual Version GetVersion()
{
return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
}
};
class ModuleMsgFloodFactory : public ModuleFactory
{
public:
ModuleMsgFloodFactory()
{
}
~ModuleMsgFloodFactory()
{
}
virtual Module * CreateModule(Server* Me)
{
return new ModuleMsgFlood(Me);
}
};
extern "C" void * init_module( void )
{
return new ModuleMsgFloodFactory;
}
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