]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_chanfilter.cpp
Fix the cloaking module on C++98 compilers.
[user/henk/code/inspircd.git] / src / modules / m_chanfilter.cpp
index 5bb5a91b03a59cc72c3fc7ca2ef3d076a988005b..14735b13db8d1cc0c52e3353b25024799a2609d1 100644 (file)
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ *   Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
+ *   Copyright (C) 2013, 2017-2020 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012-2014 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2012, 2018 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2006 Oliver Lupton <om@inspircd.org>
+ *   Copyright (C) 2005-2006, 2008-2010 Craig Edwards <brain@inspircd.org>
  *
- * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ * 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/>.
  */
 
-#define _CRT_SECURE_NO_DEPRECATE
-#define _SCL_SECURE_NO_DEPRECATE
 
 #include "inspircd.h"
-#include "u_listmode.h"
+#include "listmode.h"
+#include "modules/exemption.h"
 
-/* $ModDesc: Provides channel-specific censor lists (like mode +G but varies from channel to channel) */
+enum
+{
+       // InspIRCd-specific.
+       RPL_ENDOFSPAMFILTER = 940,
+       RPL_SPAMFILTER = 941
+};
 
-/** Handles channel mode +g
- */
 class ChanFilter : public ListModeBase
 {
  public:
-       ChanFilter(Module* Creator) : ListModeBase(Creator, "filter", 'g', "End of channel spamfilter list", 941, 940, false, "chanfilter") { }
+       unsigned long maxlen;
+
+       ChanFilter(Module* Creator)
+               : ListModeBase(Creator, "filter", 'g', "End of channel spamfilter list", RPL_SPAMFILTER, RPL_ENDOFSPAMFILTER, false)
+       {
+               syntax = "<pattern>";
+       }
 
-       virtual bool ValidateParam(User* user, Channel* chan, std::string &word)
+       bool ValidateParam(User* user, Channel* chan, std::string& word) CXX11_OVERRIDE
        {
-               if ((word.length() > 35) || (word.empty()))
+               if (word.length() > maxlen)
                {
-                       user->WriteNumeric(935, "%s %s %s :word is too %s for censor list",user->nick.c_str(), chan->name.c_str(), word.c_str(), (word.empty() ? "short" : "long"));
+                       user->WriteNumeric(Numerics::InvalidModeParameter(chan, this, word, "Word is too long for the spamfilter list."));
                        return false;
                }
 
                return true;
        }
-
-       virtual bool TellListTooLong(User* user, Channel* chan, std::string &word)
-       {
-               user->WriteNumeric(939, "%s %s %s :Channel spamfilter list is full", user->nick.c_str(), chan->name.c_str(), word.c_str());
-               return true;
-       }
-
-       virtual void TellAlreadyOnList(User* user, Channel* chan, std::string &word)
-       {
-               user->WriteNumeric(937, "%s %s :The word %s is already on the spamfilter list",user->nick.c_str(), chan->name.c_str(), word.c_str());
-       }
-
-       virtual void TellNotSet(User* user, Channel* chan, std::string &word)
-       {
-               user->WriteNumeric(938, "%s %s :No such spamfilter word is set",user->nick.c_str(), chan->name.c_str());
-       }
 };
 
 class ModuleChanFilter : public Module
 {
+       CheckExemption::EventProvider exemptionprov;
        ChanFilter cf;
        bool hidemask;
+       bool notifyuser;
+
+       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;
+
+               ListModeBase::ModeList* list = cf.GetList(chan);
+               if (!list)
+                       return NULL;
+
+               for (ListModeBase::ModeList::iterator i = list->begin(); i != list->end(); i++)
+               {
+                       if (InspIRCd::Match(text, i->mask))
+                               return &*i;
+               }
+
+               return NULL;
+       }
 
  public:
 
        ModuleChanFilter()
-               : cf(this)
+               : exemptionprov(this)
+               , cf(this)
        {
-               if (!ServerInstance->Modes->AddMode(&cf))
-                       throw ModuleException("Could not add new modes!");
-
-               cf.DoImplements(this);
-               Implementation eventlist[] = { I_OnRehash, I_OnUserPreMessage, I_OnUserPreNotice, I_OnSyncChannel };
-               ServerInstance->Modules->Attach(eventlist, this, 4);
-
-               OnRehash(NULL);
        }
 
-       virtual void OnRehash(User* user)
+       void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
        {
-               ConfigReader Conf;
-               hidemask = Conf.ReadFlag("chanfilter", "hidemask", 0);
+               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 ModResult ProcessMessages(User* user,Channel* chan,std::string &text)
+       void OnUserPart(Membership* memb, std::string& partmessage, CUList& except_list) CXX11_OVERRIDE
        {
-               ModResult res;
-               FIRST_MOD_RESULT(OnChannelRestrictionApply, res, (user,chan,"filter"));
+               if (!memb)
+                       return;
 
-               if (!IS_LOCAL(user) || res == MOD_RES_ALLOW)
-                       return MOD_RES_PASSTHRU;
+               User* user = memb->user;
+               Channel* chan = memb->chan;
+               ChanFilter::ListItem* match = Match(user, chan, partmessage);
+               if (!match)
+                       return;
 
-               modelist* list = cf.extItem.get(chan);
+               // Match() checks the user is local, we can assume from here
+               LocalUser* luser = IS_LOCAL(user);
 
-               if (list)
+               std::string oldreason(partmessage);
+               partmessage = "Reason filtered";
+               if (!notifyuser)
                {
-                       for (modelist::iterator i = list->begin(); i != list->end(); i++)
-                       {
-                               if (InspIRCd::Match(text, i->mask))
-                               {
-                                       if (hidemask)
-                                               user->WriteNumeric(404, "%s %s :Cannot send to channel (your message contained a censored word)",user->nick.c_str(), chan->name.c_str());
-                                       else
-                                               user->WriteNumeric(404, "%s %s %s :Cannot send to channel (your message contained a censored word)",user->nick.c_str(), chan->name.c_str(), i->mask.c_str());
-                                       return MOD_RES_DENY;
-                               }
-                       }
+                       // 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;
                }
 
-               return MOD_RES_PASSTHRU;
+               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 ModResult OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
+       ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE
        {
-               if (target_type == TYPE_CHANNEL)
-               {
-                       return ProcessMessages(user,(Channel*)dest,text);
-               }
-               return MOD_RES_PASSTHRU;
-       }
+               if (target.type != MessageTarget::TYPE_CHANNEL)
+                       return MOD_RES_PASSTHRU;
 
-       virtual void OnCleanup(int target_type, void* item)
-       {
-               cf.DoCleanup(target_type, item);
-       }
+               Channel* chan = target.Get<Channel>();
+               ChanFilter::ListItem* match = Match(user, chan, details.text);
+               if (match)
+               {
+                       if (!notifyuser)
+                       {
+                               details.echo_original = true;
+                               return MOD_RES_DENY;
+                       }
 
-       virtual ModResult OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
-       {
-               return OnUserPreMessage(user,dest,target_type,text,status,exempt_list);
-       }
+                       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())));
 
-       virtual void OnSyncChannel(Channel* chan, Module* proto, void* opaque)
-       {
-               cf.DoSyncChannel(chan, proto, opaque);
+                       return MOD_RES_DENY;
+               }
+               return MOD_RES_PASSTHRU;
        }
 
-       virtual Version GetVersion()
+       Version GetVersion() CXX11_OVERRIDE
        {
-               return Version("Provides channel-specific censor lists (like mode +G but varies from channel to channel)", VF_COMMON | VF_VENDOR);
-       }
+               // 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));
 
-       virtual ~ModuleChanFilter()
-       {
+               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);
        }
 };