X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_chanfilter.cpp;h=14735b13db8d1cc0c52e3353b25024799a2609d1;hb=80e81e3b81b779901fd9d67f8ae030ee30c0bcec;hp=9e8d36ff8bd345e087db469863d32963cf907d85;hpb=a7b0c26a4c56440e4bc5ddc6d3ecfeb36089dbb2;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_chanfilter.cpp b/src/modules/m_chanfilter.cpp index 9e8d36ff8..14735b13d 100644 --- a/src/modules/m_chanfilter.cpp +++ b/src/modules/m_chanfilter.cpp @@ -1,245 +1,176 @@ -/* +------------------------------------+ - * | 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) 2019 linuxdaemon + * Copyright (C) 2013, 2017-2020 Sadie Powell + * Copyright (C) 2012-2014 Attila Molnar + * Copyright (C) 2012, 2018 Robby + * Copyright (C) 2009 Daniel De Graaf + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2006 Oliver Lupton + * Copyright (C) 2005-2006, 2008-2010 Craig Edwards * - * --------------------------------------------------- + * 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 -#include "users.h" -#include "channels.h" -#include "modules.h" -#include "helperfuncs.h" -#include "hashcomp.h" +#include "inspircd.h" +#include "listmode.h" +#include "modules/exemption.h" -/* $ModDesc: Provides channel-specific censor lists (like mode +G but varies from channel to channel) */ - -typedef std::vector SpamList; +enum +{ + // InspIRCd-specific. + RPL_ENDOFSPAMFILTER = 940, + RPL_SPAMFILTER = 941 +}; -class ModuleChanFilter : public Module +class ChanFilter : public ListModeBase { - Server *Srv; - ConfigReader *Conf; - long MaxEntries; - public: - - ModuleChanFilter(Server* Me) - : Module::Module(Me) - { - Srv = Me; - Conf = new ConfigReader; - Srv->AddExtendedListMode('g'); - MaxEntries = Conf->ReadInteger("chanfilter","maxsize",0,true); - if (MaxEntries == 0) - MaxEntries = 32; - } + unsigned long maxlen; - void Implements(char* List) - { - List[I_On005Numeric] = List[I_OnUserPart] = List[I_OnRehash] = List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnExtendedMode] = List[I_OnSendList] = List[I_OnSyncChannel] = 1; - } - - virtual void On005Numeric(std::string &output) + ChanFilter(Module* Creator) + : ListModeBase(Creator, "filter", 'g', "End of channel spamfilter list", RPL_SPAMFILTER, RPL_ENDOFSPAMFILTER, false) { - InsertMode(output,"g",1); + syntax = ""; } - virtual void OnUserPart(userrec* user, chanrec* channel, const std::string &partreason) + bool ValidateParam(User* user, Channel* chan, std::string& word) CXX11_OVERRIDE { - // when the last user parts, delete the list - if (Srv->CountUsers(channel) == 1) + if (word.length() > maxlen) { - SpamList* spamlist = (SpamList*)channel->GetExt("spam_list"); - if (spamlist) - { - channel->Shrink("spam_list"); - delete spamlist; - } + user->WriteNumeric(Numerics::InvalidModeParameter(chan, this, word, "Word is too long for the spamfilter list.")); + return false; } - } - virtual void OnRehash(const std::string ¶meter) - { - delete Conf; - Conf = new ConfigReader; - // re-read our config options on a rehash - MaxEntries = Conf->ReadInteger("chanfilter","maxsize",0,true); + return true; } +}; + +class ModuleChanFilter : public Module +{ + CheckExemption::EventProvider exemptionprov; + ChanFilter cf; + bool hidemask; + bool notifyuser; - virtual int ProcessMessages(userrec* user,chanrec* chan,std::string &text) + ChanFilter::ListItem* Match(User* user, Channel* chan, const std::string& text) { + ModResult res = CheckExemption::Call(exemptionprov, user, chan, "filter"); + if (!IS_LOCAL(user) || res == MOD_RES_ALLOW) + return NULL; - // Create a copy of the string in irc::string - irc::string line = text.c_str(); + ListModeBase::ModeList* list = cf.GetList(chan); + if (!list) + return NULL; - SpamList* spamlist = (SpamList*)chan->GetExt("spam_list"); - if (spamlist) + for (ListModeBase::ModeList::iterator i = list->begin(); i != list->end(); i++) { - for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++) - { - if (line.find(*i) != std::string::npos) - { - WriteServ(user->fd,"936 %s %s %s :Your message contained a censored word, and was blocked",user->nick, chan->name, i->c_str()); - return 1; - } - } + if (InspIRCd::Match(text, i->mask)) + return &*i; } - return 0; + + return NULL; } - virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status) + public: + + ModuleChanFilter() + : exemptionprov(this) + , cf(this) { - if (target_type == TYPE_CHANNEL) - { - return ProcessMessages(user,(chanrec*)dest,text); - } - else return 0; } - virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status) + void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE { - return OnUserPreMessage(user,dest,target_type,text,status); + ConfigTag* tag = ServerInstance->Config->ConfValue("chanfilter"); + hidemask = tag->getBool("hidemask"); + cf.maxlen = tag->getUInt("maxlen", 35, 10, ModeParser::MODE_PARAM_MAX); + notifyuser = tag->getBool("notifyuser", true); + cf.DoRehash(); } - - virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms) + + void OnUserPart(Membership* memb, std::string& partmessage, CUList& except_list) CXX11_OVERRIDE { - if ((modechar == 'g') && (type == MT_CHANNEL)) - { - chanrec* chan = (chanrec*)target; + if (!memb) + return; - irc::string word = params[0].c_str(); + User* user = memb->user; + Channel* chan = memb->chan; + ChanFilter::ListItem* match = Match(user, chan, partmessage); + if (!match) + return; - if (word == "") - return -1; + // Match() checks the user is local, we can assume from here + LocalUser* luser = IS_LOCAL(user); - if (mode_on) - { - SpamList* spamlist = (SpamList*)chan->GetExt("spam_list"); - if (!spamlist) - { - spamlist = new SpamList; - chan->Extend("spam_list",(char*)spamlist); - } - if (spamlist->size() < (unsigned)MaxEntries) - { - if (word.length() > 35) - { - WriteServ(user->fd,"935 %s %s %s :word is too long for censor list",user->nick, chan->name,word.c_str()); - return -1; - } - for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++) - { - if (*i == word) - { - WriteServ(user->fd,"937 %s %s :The word %s is already on the spamfilter list",user->nick, chan->name,word.c_str()); - return -1; - } - } - spamlist->push_back(word); - return 1; - } - WriteServ(user->fd,"939 %s %s :Channel spamfilter list is full",user->nick, chan->name); - return -1; - } - else - { - SpamList* spamlist = (SpamList*)chan->GetExt("spam_list"); - if (spamlist) - { - for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++) - { - if (*i == word) - { - spamlist->erase(i); - return 1; - } - } - } - WriteServ(user->fd,"938 %s %s :No such spamfilter word is set",user->nick, chan->name); - return -1; - } - return -1; - } - return 0; - } - - virtual void OnSendList(userrec* user, chanrec* channel, char mode) - { - if (mode == 'g') + std::string oldreason(partmessage); + partmessage = "Reason filtered"; + if (!notifyuser) { - SpamList* spamlist = (SpamList*)channel->GetExt("spam_list"); - if (spamlist) - { - for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++) - { - WriteServ(user->fd,"941 %s %s %s",user->nick, channel->name,i->c_str()); - } - } - WriteServ(user->fd,"940 %s %s :End of channel spamfilter list",user->nick, channel->name); + // Send fake part + ClientProtocol::Messages::Part partmsg(memb, oldreason); + ClientProtocol::Event ev(ServerInstance->GetRFCEvents().part, partmsg); + luser->Send(ev); + + // Don't send the user the changed message + except_list.insert(user); + return; } + + if (hidemask) + user->WriteNumeric(Numerics::CannotSendTo(chan, "Your part message contained a banned phrase and was blocked.")); + else + user->WriteNumeric(Numerics::CannotSendTo(chan, InspIRCd::Format("Your part message contained a banned phrase (%s) and was blocked.", + match->mask.c_str()))); } - - virtual ~ModuleChanFilter() - { - delete Conf; - } - - virtual Version GetVersion() - { - return Version(1,0,0,0,VF_STATIC|VF_VENDOR); - } - - virtual void OnSyncChannel(chanrec* chan, Module* proto, void* opaque) + + ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE { - SpamList* spamlist = (SpamList*)chan->GetExt("spam_list"); - string_list commands; - if (spamlist) + if (target.type != MessageTarget::TYPE_CHANNEL) + return MOD_RES_PASSTHRU; + + Channel* chan = target.Get(); + ChanFilter::ListItem* match = Match(user, chan, details.text); + if (match) { - for (SpamList::iterator i = spamlist->begin(); i != spamlist->end(); i++) + if (!notifyuser) { - proto->ProtoSendMode(opaque,TYPE_CHANNEL,chan,"+g "+std::string(i->c_str())); + details.echo_original = true; + return MOD_RES_DENY; } - } - } - -}; + if (hidemask) + user->WriteNumeric(Numerics::CannotSendTo(chan, "Your message to this channel contained a banned phrase and was blocked.")); + else + user->WriteNumeric(Numerics::CannotSendTo(chan, InspIRCd::Format("Your message to this channel contained a banned phrase (%s) and was blocked.", + match->mask.c_str()))); -class ModuleChanFilterFactory : public ModuleFactory -{ - public: - ModuleChanFilterFactory() - { - } - - ~ModuleChanFilterFactory() - { + return MOD_RES_DENY; + } + return MOD_RES_PASSTHRU; } - - virtual Module * CreateModule(Server* Me) + + Version GetVersion() CXX11_OVERRIDE { - return new ModuleChanFilter(Me); + // We don't send any link data if the length is 35 for compatibility with the 2.0 branch. + std::string maxfilterlen; + if (cf.maxlen != 35) + maxfilterlen.assign(ConvToStr(cf.maxlen)); + + return Version("Adds channel mode g (filter) which allows channel operators to define glob patterns for inappropriate phrases that are not allowed to be used in the channel.", VF_VENDOR, maxfilterlen); } - }; - -extern "C" void * init_module( void ) -{ - return new ModuleChanFilterFactory; -} - +MODULE_INIT(ModuleChanFilter)