-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- 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.
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
+ * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 John Brooks <john.brooks@dereferenced.net>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2006 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
*
- * ---------------------------------------------------
+ * This file is part of InspIRCd. InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-using namespace std;
-#include <stdio.h>
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
-#include "helperfuncs.h"
+#include "inspircd.h"
/* $ModDesc: Provides channel mode +f (message flood protection) */
+/** Holds flood settings and state for mode +f
+ */
class floodsettings
{
+ public:
bool ban;
int secs;
int lines;
+ time_t reset;
+ std::map<User*,int> counters;
- floodsettings() : ban(0), secs(0), lines(0) {};
- floodsettings(bool a, int b, int c) : ban(a), secs(b), lines(c) {};
-}
+ floodsettings(bool a, int b, int c) : ban(a), secs(b), lines(c)
+ {
+ reset = ServerInstance->Time() + secs;
+ };
-class ModuleMsgFlood : public Module
-{
- Server *Srv;
-
- public:
-
- ModuleMsgFlood(Server* Me)
- : Module::Module(Me)
+ void addmessage(User* who)
+ {
+ std::map<User*,int>::iterator iter = counters.find(who);
+ if (iter != counters.end())
+ {
+ iter->second++;
+ }
+ else
+ {
+ counters[who] = 1;
+ }
+ if (ServerInstance->Time() > reset)
+ {
+ counters.clear();
+ reset = ServerInstance->Time() + secs;
+ }
+ }
+
+ bool shouldkick(User* who)
{
- Srv = Me;
- Srv->AddExtendedMode('f',MT_CHANNEL,false,1,0);
+ std::map<User*,int>::iterator iter = counters.find(who);
+ if (iter != counters.end())
+ {
+ return (iter->second >= this->lines);
+ }
+ else return false;
}
-
- virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms)
+
+ void clear(User* who)
{
- if ((modechar == 'f') && (type == MT_CHANNEL))
+ std::map<User*,int>::iterator iter = counters.find(who);
+ if (iter != counters.end())
{
- if (mode_on)
+ counters.erase(iter);
+ }
+ }
+};
+
+/** Handles channel mode +f
+ */
+class MsgFlood : public ModeHandler
+{
+ public:
+ SimpleExtItem<floodsettings> ext;
+ MsgFlood(Module* Creator) : ModeHandler(Creator, "flood", 'f', PARAM_SETONLY, MODETYPE_CHANNEL),
+ ext("messageflood", Creator) { }
+
+ ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding)
+ {
+ floodsettings *f = ext.get(channel);
+
+ if (adding)
+ {
+ char ndata[MAXBUF];
+ char* data = ndata;
+ strlcpy(ndata,parameter.c_str(),MAXBUF);
+ char* lines = data;
+ char* secs = NULL;
+ bool ban = false;
+ if (*data == '*')
{
- std::string FloodParams = params[0];
- chanrec* c = (chanrec*)target;
- char data[MAXBUF];
- strlcpy(data,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 == ':')
{
- ban = true;
+ *data = 0;
data++;
+ secs = data;
+ break;
}
- else
- {
- ban = false;
- }
- while (*data)
+ else data++;
+ }
+ if (secs)
+ {
+ /* Set up the flood parameters for this channel */
+ int nlines = atoi(lines);
+ int nsecs = atoi(secs);
+ if ((nlines<2) || (nsecs<1))
{
- if (*data == ':')
- {
- *data = 0;
- data++;
- secs = data;
- break;
- }
- else data++;
+ source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str());
+ parameter.clear();
+ return MODEACTION_DENY;
}
- if (secs)
+ else
{
- /* Set up the flood parameters for this channel */
- int nlines = atoi(lines);
- int nsecs = atoi(secs);
- if ((nlines<1) || (nsecs<1))
+ if (!f)
{
- WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name);
- return 0;
+ parameter = std::string(ban ? "*" : "") + ConvToStr(nlines) + ":" +ConvToStr(nsecs);
+ f = new floodsettings(ban,nsecs,nlines);
+ ext.set(channel, f);
+ channel->SetModeParam('f', parameter);
+ return MODEACTION_ALLOW;
}
else
{
- if (!c->GetExt("flood"))
+ std::string cur_param = channel->GetModeParameter('f');
+ parameter = std::string(ban ? "*" : "") + ConvToStr(nlines) + ":" +ConvToStr(nsecs);
+ if (cur_param == parameter)
+ {
+ // mode params match
+ return MODEACTION_DENY;
+ }
+ else
{
- floodsettings *f = new floodsettings(ban,nlines,nsecs);
- c->Extend("flood",(char*)f);
+ if ((((nlines != f->lines) || (nsecs != f->secs) || (ban != f->ban))) && (((nsecs > 0) && (nlines > 0))))
+ {
+ floodsettings *fs = new floodsettings(ban,nsecs,nlines);
+ ext.set(channel, fs);
+ channel->SetModeParam('f', parameter);
+ return MODEACTION_ALLOW;
+ }
+ else
+ {
+ return MODEACTION_DENY;
+ }
}
}
- return 1;
- }
- else
- {
- WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name);
- return 0;
}
-
}
else
{
- if (c->GetExt("flood"))
- {
- floodsettings *f = (floodsettings*)c->GetExt("flood");
- delete f;
- c->Shrink("flood");
- }
+ source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str());
+ parameter.clear();
+ return MODEACTION_DENY;
}
- return 1;
}
- return 0;
- }
-
- void OnChannelDelete(chanrec* chan)
- {
- if (c->GetExt("flood"))
+ else
{
- floodsettings *f = (floodsettings*)c->GetExt("flood");
- delete f;
- c->Shrink("flood");
+ if (f)
+ {
+ ext.unset(channel);
+ channel->SetModeParam('f', "");
+ return MODEACTION_ALLOW;
+ }
}
+
+ return MODEACTION_DENY;
}
+};
- void Implements(char* List)
+class ModuleMsgFlood : public Module
+{
+ MsgFlood mf;
+
+ public:
+
+ ModuleMsgFlood()
+ : mf(this)
{
- List[I_On005Numeric] = List[I_OnExtendedMode] = List[I_OnChannelDelete] = 1;
+ if (!ServerInstance->Modes->AddMode(&mf))
+ throw ModuleException("Could not add new modes!");
+ ServerInstance->Extensions.Register(&mf.ext);
+ Implementation eventlist[] = { I_OnUserPreNotice, I_OnUserPreMessage };
+ ServerInstance->Modules->Attach(eventlist, this, 2);
}
- virtual void On005Numeric(std::string &output)
- {
- std::stringstream line(output);
- std::string temp1, temp2;
- while (!line.eof())
- {
- line >> temp1;
- if (temp1.substr(0,10) == "CHANMODES=")
- {
- // By doing this we're *assuming* no other module has fucked up the CHANMODES=
- // section of the 005 numeric. If they have, we're going DOWN in a blaze of glory,
- // with a honking great EXCEPTION :)
- temp1.insert(temp1.find(",")+1,"f");
- }
- temp2 = temp2 + temp1 + " ";
- }
- if (temp2.length())
- output = temp2.substr(0,temp2.length()-1);
- }
-
- virtual ~ModuleMsgFlood()
+ ModResult ProcessMessages(User* user,Channel* dest, const std::string &text)
{
+ ModResult res = ServerInstance->OnCheckExemption(user,dest,"flood");
+ if (!IS_LOCAL(user) || res == MOD_RES_ALLOW)
+ return MOD_RES_PASSTHRU;
+
+ floodsettings *f = mf.ext.get(dest);
+ if (f)
+ {
+ f->addmessage(user);
+ if (f->shouldkick(user))
+ {
+ /* Youre outttta here! */
+ f->clear(user);
+ if (f->ban)
+ {
+ std::vector<std::string> parameters;
+ parameters.push_back(dest->name);
+ parameters.push_back("+b");
+ parameters.push_back(user->MakeWildHost());
+ ServerInstance->SendGlobalMode(parameters, ServerInstance->FakeClient);
+ }
+
+ char kickmessage[MAXBUF];
+ snprintf(kickmessage, MAXBUF, "Channel flood triggered (limit is %d lines in %d secs)", f->lines, f->secs);
+
+ dest->KickUser(ServerInstance->FakeClient, user, kickmessage);
+
+ return MOD_RES_DENY;
+ }
+ }
+
+ return MOD_RES_PASSTHRU;
}
-
- virtual Version GetVersion()
+
+ ModResult OnUserPreMessage(User *user, void *dest, int target_type, std::string &text, char status, CUList &exempt_list)
{
- return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
- }
-};
+ if (target_type == TYPE_CHANNEL)
+ return ProcessMessages(user,(Channel*)dest,text);
+ return MOD_RES_PASSTHRU;
+ }
-class ModuleMsgFloodFactory : public ModuleFactory
-{
- public:
- ModuleMsgFloodFactory()
+ ModResult OnUserPreNotice(User *user, void *dest, int target_type, std::string &text, char status, CUList &exempt_list)
{
+ if (target_type == TYPE_CHANNEL)
+ return ProcessMessages(user,(Channel*)dest,text);
+
+ return MOD_RES_PASSTHRU;
}
-
- ~ModuleMsgFloodFactory()
+
+ ~ModuleMsgFlood()
{
}
-
- virtual Module * CreateModule(Server* Me)
+
+ Version GetVersion()
{
- return new ModuleMsgFlood(Me);
+ return Version("Provides channel mode +f (message flood protection)", VF_VENDOR);
}
-
};
-
-extern "C" void * init_module( void )
-{
- return new ModuleMsgFloodFactory;
-}
-
+MODULE_INIT(ModuleMsgFlood)
projects / user / henk / code / inspircd.git / blobdiff