-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2010 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ * Copyright (C) 2013, 2017-2019 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2012-2014, 2016 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 John Brooks <special@inspircd.org>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 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/>.
*/
-#include "inspircd.h"
-/* $ModDesc: Provides channel mode +f (message flood protection) */
+#include "inspircd.h"
+#include "modules/ctctags.h"
+#include "modules/exemption.h"
/** Holds flood settings and state for mode +f
*/
{
public:
bool ban;
- int secs;
- int lines;
+ unsigned int secs;
+ unsigned int lines;
time_t reset;
- std::map<User*,int> counters;
+ insp::flat_map<User*, double> counters;
- floodsettings(bool a, int b, int c) : ban(a), secs(b), lines(c)
+ floodsettings(bool a, unsigned int b, unsigned int c)
+ : ban(a)
+ , secs(b)
+ , lines(c)
{
reset = ServerInstance->Time() + secs;
- };
+ }
- void addmessage(User* who)
+ bool addmessage(User* who, double weight)
{
- 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)
- {
- std::map<User*,int>::iterator iter = counters.find(who);
- if (iter != counters.end())
- {
- return (iter->second >= this->lines);
- }
- else return false;
+ counters[who] += weight;
+ return (counters[who] >= this->lines);
}
void clear(User* who)
{
- std::map<User*,int>::iterator iter = counters.find(who);
- if (iter != counters.end())
- {
- counters.erase(iter);
- }
+ counters.erase(who);
}
};
/** Handles channel mode +f
*/
-class MsgFlood : public ModeHandler
+class MsgFlood : public ParamMode<MsgFlood, SimpleExtItem<floodsettings> >
{
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)
+ MsgFlood(Module* Creator)
+ : ParamMode<MsgFlood, SimpleExtItem<floodsettings> >(Creator, "flood", 'f')
{
- floodsettings *f = ext.get(channel);
+ syntax = "[*]<messages>:<seconds>";
+ }
- if (adding)
+ ModeAction OnSet(User* source, Channel* channel, std::string& parameter) CXX11_OVERRIDE
+ {
+ std::string::size_type colon = parameter.find(':');
+ if ((colon == std::string::npos) || (parameter.find('-') != std::string::npos))
{
- char ndata[MAXBUF];
- char* data = ndata;
- strlcpy(ndata,parameter.c_str(),MAXBUF);
- char* lines = data;
- char* secs = NULL;
- bool ban = false;
- if (*data == '*')
- {
- ban = true;
- lines++;
- }
- else
- {
- ban = false;
- }
- while (*data)
- {
- if (*data == ':')
- {
- *data = 0;
- data++;
- secs = data;
- break;
- }
- 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))
- {
- source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str());
- parameter.clear();
- return MODEACTION_DENY;
- }
- else
- {
- if (!f)
- {
- 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
- {
- 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
- {
- 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;
- }
- }
- }
- }
- }
- else
- {
- source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str());
- parameter.clear();
- return MODEACTION_DENY;
- }
+ source->WriteNumeric(Numerics::InvalidModeParameter(channel, this, parameter));
+ return MODEACTION_DENY;
}
- else
+
+ /* Set up the flood parameters for this channel */
+ bool ban = (parameter[0] == '*');
+ unsigned int nlines = ConvToNum<unsigned int>(parameter.substr(ban ? 1 : 0, ban ? colon-1 : colon));
+ unsigned int nsecs = ConvToNum<unsigned int>(parameter.substr(colon+1));
+
+ if ((nlines<2) || (nsecs<1))
{
- if (f)
- {
- ext.unset(channel);
- channel->SetModeParam('f', "");
- return MODEACTION_ALLOW;
- }
+ source->WriteNumeric(Numerics::InvalidModeParameter(channel, this, parameter));
+ return MODEACTION_DENY;
}
- return MODEACTION_DENY;
+ ext.set(channel, new floodsettings(ban, nsecs, nlines));
+ return MODEACTION_ALLOW;
+ }
+
+ void SerializeParam(Channel* chan, const floodsettings* fs, std::string& out)
+ {
+ if (fs->ban)
+ out.push_back('*');
+ out.append(ConvToStr(fs->lines)).push_back(':');
+ out.append(ConvToStr(fs->secs));
}
};
-class ModuleMsgFlood : public Module
+class ModuleMsgFlood
+ : public Module
+ , public CTCTags::EventListener
{
+private:
+ CheckExemption::EventProvider exemptionprov;
MsgFlood mf;
+ double notice;
+ double privmsg;
+ double tagmsg;
public:
-
ModuleMsgFlood()
- : mf(this)
+ : CTCTags::EventListener(this)
+ , exemptionprov(this)
+ , mf(this)
{
- 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);
}
- ModResult ProcessMessages(User* user,Channel* dest, const std::string &text)
+ void ReadConfig(ConfigStatus&) CXX11_OVERRIDE
{
- ModResult res;
- FIRST_MOD_RESULT(OnChannelRestrictionApply, res, (user,dest,"flood"));
- if (!IS_LOCAL(user) || res == MOD_RES_ALLOW)
+ ConfigTag* tag = ServerInstance->Config->ConfValue("messageflood");
+ notice = tag->getFloat("notice", 1.0);
+ privmsg = tag->getFloat("privmsg", 1.0);
+ tagmsg = tag->getFloat("tagmsg", 0.2);
+ }
+
+ ModResult HandleMessage(User* user, const MessageTarget& target, double weight)
+ {
+ if (target.type != MessageTarget::TYPE_CHANNEL)
+ return MOD_RES_PASSTHRU;
+
+ Channel* dest = target.Get<Channel>();
+ if ((!IS_LOCAL(user)) || !dest->IsModeSet(mf))
+ return MOD_RES_PASSTHRU;
+
+ ModResult res = CheckExemption::Call(exemptionprov, user, dest, "flood");
+ if (res == MOD_RES_ALLOW)
return MOD_RES_PASSTHRU;
floodsettings *f = mf.ext.get(dest);
if (f)
{
- f->addmessage(user);
- if (f->shouldkick(user))
+ if (f->addmessage(user, weight))
{
/* 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);
+ Modes::ChangeList changelist;
+ changelist.push_add(ServerInstance->Modes->FindMode('b', MODETYPE_CHANNEL), "*!*@" + user->GetDisplayedHost());
+ ServerInstance->Modes->Process(ServerInstance->FakeClient, dest, NULL, changelist);
}
- char kickmessage[MAXBUF];
- snprintf(kickmessage, MAXBUF, "Channel flood triggered (limit is %d lines in %d secs)", f->lines, f->secs);
+ const std::string kickMessage = "Channel flood triggered (trigger is " + ConvToStr(f->lines) +
+ " lines in " + ConvToStr(f->secs) + " secs)";
- dest->KickUser(ServerInstance->FakeClient, user, kickmessage);
+ dest->KickUser(ServerInstance->FakeClient, user, kickMessage);
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
- 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;
+ return HandleMessage(user, target, (details.type == MSG_PRIVMSG ? privmsg : notice));
}
- ModResult OnUserPreNotice(User *user, void *dest, int target_type, std::string &text, char status, CUList &exempt_list)
+ ModResult OnUserPreTagMessage(User* user, const MessageTarget& target, CTCTags::TagMessageDetails& details) CXX11_OVERRIDE
{
- if (target_type == TYPE_CHANNEL)
- return ProcessMessages(user,(Channel*)dest,text);
-
- return MOD_RES_PASSTHRU;
+ return HandleMessage(user, target, tagmsg);
}
- ~ModuleMsgFlood()
+ void Prioritize() CXX11_OVERRIDE
{
+ // we want to be after all modules that might deny the message (e.g. m_muteban, m_noctcp, m_blockcolor, etc.)
+ ServerInstance->Modules->SetPriority(this, I_OnUserPreMessage, PRIORITY_LAST);
}
- Version GetVersion()
+ Version GetVersion() CXX11_OVERRIDE
{
- return Version("Provides channel mode +f (message flood protection)", VF_VENDOR);
+ return Version("Adds channel mode f (flood) which helps protect against spammers which mass-message channels.", VF_VENDOR);
}
};
projects / user / henk / code / inspircd.git / blobdiff