X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_joinflood.cpp;h=63bcc38a4180c30526814f66ee6396d433b94ae8;hb=de4b1863536348520c6498e11d910acd050092a7;hp=8d0716d224b47a84d44ffaadeb2a8a9765b844e6;hpb=2dfe8acc52c34a8aafcc40e2a47638a2e11c5326;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_joinflood.cpp b/src/modules/m_joinflood.cpp index 8d0716d22..63bcc38a4 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; @@ -36,22 +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++; - if (time(NULL) > reset) + if (ServerInstance->Time() > reset) { counter = 0; - reset = time(NULL) + secs; + reset = ServerInstance->Time() + secs; } } @@ -69,7 +68,7 @@ class joinfloodsettings { if (locked) { - if (time(NULL) > unlocktime) + if (ServerInstance->Time() > unlocktime) { locked = false; return false; @@ -85,190 +84,165 @@ class joinfloodsettings void 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; + } + 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)) + { + 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 njoins = atoi(joins); - int nsecs = atoi(secs); - if ((njoins<1) || (nsecs<1)) + 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(njoins,nsecs); - c->Extend("joinflood",(char*)f); + // mode params match + return MODEACTION_DENY; + } + else + { + // new mode param, replace old with new + f = new joinfloodsettings(nsecs, njoins); + ext.set(channel, f); + channel->SetModeParam('j', parameter); + return MODEACTION_ALLOW; } } - 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 + { + if (channel->IsModeSet('j')) + { + 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) + { + } + + void init() + { + ServerInstance->Modules->AddService(jf); + ServerInstance->Modules->AddService(jf.ext); + Implementation eventlist[] = { I_OnUserPreJoin, I_OnUserJoin }; + ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation)); + } + + 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"); - if (f) + /* 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->islocked())) { 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); + 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) + ~ModuleJoinFlood() { - List[I_On005Numeric] = List[I_OnExtendedMode] = List[I_OnChannelDelete] = List[I_OnUserPreJoin] = List[I_OnUserJoin] = 1; } - 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,"j"); - } - temp2 = temp2 + temp1 + " "; - } - if (temp2.length()) - output = temp2.substr(0,temp2.length()-1); - } - - virtual ~ModuleJoinFlood() + Version GetVersion() { + return Version("Provides channel mode +j (join flood protection)", VF_VENDOR); } - - 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; -} - +MODULE_INIT(ModuleJoinFlood)