X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_joinflood.cpp;h=e5844532791879fb350fb62a63916c8c7a2e4b47;hb=9c5629085ae4914f9db514ca6fbd94e8d58c6f31;hp=ca19bf14ad19cf1c6a6a14eadd4b852f846ae8ee;hpb=74ce37ff2bad1f445f85839b3acda05eefd98a1b;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_joinflood.cpp b/src/modules/m_joinflood.cpp index ca19bf14a..e58445327 100644 --- a/src/modules/m_joinflood.cpp +++ b/src/modules/m_joinflood.cpp @@ -1,34 +1,35 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. - * E-mail: - * - * - * - * 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 + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2007 Robin Burchell + * Copyright (C) 2006-2007 Craig Edwards + * Copyright (C) 2006 Oliver Lupton * - * --------------------------------------------------- + * 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 . */ -using namespace std; -#include -#include -#include "users.h" -#include "channels.h" -#include "modules.h" -#include "helperfuncs.h" +#include "inspircd.h" -/* $ModDesc: Provides channel mode +f (message flood protection) */ +/* $ModDesc: Provides channel mode +j (join flood protection) */ +/** Holds settings and state associated with channel mode +j + */ class joinfloodsettings { public: - int secs; int joins; time_t reset; @@ -36,24 +37,20 @@ class joinfloodsettings int counter; bool locked; - joinfloodsettings() : secs(0), joins(0) {}; joinfloodsettings(int b, int c) : secs(b), joins(c) { - reset = time(NULL) + secs; + reset = ServerInstance->Time() + 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) + if (ServerInstance->Time() > reset) { - log(DEBUG,"joinflood counter reset"); counter = 0; - reset = time(NULL) + secs; + reset = ServerInstance->Time() + secs; } } @@ -64,7 +61,6 @@ class joinfloodsettings void clear() { - log(DEBUG,"joinflood counter clear"); counter = 0; } @@ -72,7 +68,7 @@ class joinfloodsettings { if (locked) { - if (time(NULL) > unlocktime) + if (ServerInstance->Time() > unlocktime) { locked = false; return false; @@ -87,113 +83,152 @@ class joinfloodsettings void lock() { - log(DEBUG,"joinflood lock"); locked = true; - unlocktime = time(NULL) + 60; + unlocktime = ServerInstance->Time() + 60; } - }; -class ModuleJoinFlood : public Module +/** Handles channel mode +j + */ +class JoinFlood : public ModeHandler { - 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) + SimpleExtItem ext; + JoinFlood(Module* Creator) : ModeHandler(Creator, "joinflood", 'j', PARAM_SETONLY, MODETYPE_CHANNEL), + ext("joinflood", Creator) { } + + ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding) { - if ((modechar == 'j') && (type == MT_CHANNEL)) + if (adding) { - if (mode_on) + char ndata[MAXBUF]; + char* data = ndata; + strlcpy(ndata,parameter.c_str(),MAXBUF); + char* joins = data; + char* secs = NULL; + while (*data) { - 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 == ':') { - if (*data == ':') - { - *data = 0; - data++; - secs = data; - break; - } - else data++; + *data = 0; + data++; + secs = data; + break; } - if (secs) + 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)) { - /* Set up the flood parameters for this channel */ - int njoins = atoi(joins); - int nsecs = atoi(secs); - if ((njoins<1) || (nsecs<1)) + source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str()); + parameter.clear(); + return MODEACTION_DENY; + } + else + { + joinfloodsettings* f = ext.get(channel); + if (!f) { - WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name); - return 0; + parameter = ConvToStr(njoins) + ":" +ConvToStr(nsecs); + f = new joinfloodsettings(nsecs, njoins); + ext.set(channel, f); + channel->SetModeParam('j', parameter); + return MODEACTION_ALLOW; } else { - if (!c->GetExt("joinflood")) + std::string cur_param = channel->GetModeParameter('j'); + parameter = ConvToStr(njoins) + ":" +ConvToStr(nsecs); + if (cur_param == parameter) { - joinfloodsettings *f = new joinfloodsettings(nsecs,njoins); - c->Extend("joinflood",(char*)f); + // mode params match + return MODEACTION_DENY; + } + else + { + // new mode param, replace old with new + if ((nsecs > 0) && (njoins > 0)) + { + f = new joinfloodsettings(nsecs, njoins); + ext.set(channel, f); + channel->SetModeParam('j', 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 { - chanrec* c = (chanrec*)target; - if (c->GetExt("joinflood")) - { - joinfloodsettings *f = (joinfloodsettings*)c->GetExt("joinflood"); - delete f; - c->Shrink("joinflood"); - } + source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str()); + return MODEACTION_DENY; } - return 1; } - return 0; + else + { + joinfloodsettings* f = ext.get(channel); + if (f) + { + ext.unset(channel); + channel->SetModeParam('j', ""); + return MODEACTION_ALLOW; + } + } + return MODEACTION_DENY; } +}; + +class ModuleJoinFlood : public Module +{ - virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname) + JoinFlood jf; + + public: + + ModuleJoinFlood() + : jf(this) + { + + if (!ServerInstance->Modes->AddMode(&jf)) + throw ModuleException("Could not add new modes!"); + ServerInstance->Extensions.Register(&jf.ext); + Implementation eventlist[] = { I_OnUserPreJoin, I_OnUserJoin }; + ServerInstance->Modules->Attach(eventlist, this, 2); + } + + ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven) { if (chan) { - joinfloodsettings *f = (joinfloodsettings*)chan->GetExt("joinflood"); - if (f) + joinfloodsettings *f = jf.ext.get(chan); + if (f && f->islocked()) { - 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; - } + user->WriteNumeric(609, "%s %s :This channel is temporarily unavailable (+j). Please try again later.",user->nick.c_str(),chan->name.c_str()); + return MOD_RES_DENY; } } - return 0; + return MOD_RES_PASSTHRU; } - virtual void OnUserJoin(userrec* user, chanrec* channel) + void OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts) { - joinfloodsettings *f = (joinfloodsettings*)channel->GetExt("joinflood"); + /* We arent interested in JOIN events caused by a network burst */ + if (sync) + return; + + joinfloodsettings *f = jf.ext.get(memb->chan); + + /* But all others are OK */ if (f) { f->addjoin(); @@ -201,63 +236,19 @@ class ModuleJoinFlood : public Module { 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); + memb->chan->WriteChannelWithServ((char*)ServerInstance->Config->ServerName.c_str(), "NOTICE %s :This channel has been closed to new users for 60 seconds because there have been more than %d joins in %d seconds.", memb->chan->name.c_str(), 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) + ~ModuleJoinFlood() { - InsertMode(output, "j", 3); } - virtual ~ModuleJoinFlood() - { - } - - virtual Version GetVersion() + Version GetVersion() { - return Version(1,0,0,0,VF_STATIC|VF_VENDOR); + return Version("Provides channel mode +j (join flood protection)", 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; -} - +MODULE_INIT(ModuleJoinFlood)