2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
6 * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
7 * Copyright (C) 2006-2007 Craig Edwards <craigedwards@brainbox.cc>
8 * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
10 * This file is part of InspIRCd. InspIRCd is free software: you can
11 * redistribute it and/or modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation, version 2.
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
29 ERR_UNAVAILRESOURCE = 437
32 // The number of seconds the channel will be closed for.
33 static unsigned int duration;
35 /** Holds settings and state associated with channel mode +j
37 class joinfloodsettings
46 joinfloodsettings(unsigned int b, unsigned int c)
47 : secs(b), joins(c), unlocktime(0), counter(0)
49 reset = ServerInstance->Time() + secs;
54 if (ServerInstance->Time() > reset)
57 reset = ServerInstance->Time() + secs;
65 return (counter >= this->joins);
75 if (ServerInstance->Time() > unlocktime)
78 return (unlocktime != 0);
83 unlocktime = ServerInstance->Time() + duration;
86 bool operator==(const joinfloodsettings& other) const
88 return ((this->secs == other.secs) && (this->joins == other.joins));
92 /** Handles channel mode +j
94 class JoinFlood : public ParamMode<JoinFlood, SimpleExtItem<joinfloodsettings> >
97 JoinFlood(Module* Creator)
98 : ParamMode<JoinFlood, SimpleExtItem<joinfloodsettings> >(Creator, "joinflood", 'j')
100 syntax = "<joins>:<seconds>";
103 ModeAction OnSet(User* source, Channel* channel, std::string& parameter) CXX11_OVERRIDE
105 std::string::size_type colon = parameter.find(':');
106 if ((colon == std::string::npos) || (parameter.find('-') != std::string::npos))
108 source->WriteNumeric(Numerics::InvalidModeParameter(channel, this, parameter));
109 return MODEACTION_DENY;
112 /* Set up the flood parameters for this channel */
113 unsigned int njoins = ConvToNum<unsigned int>(parameter.substr(0, colon));
114 unsigned int nsecs = ConvToNum<unsigned int>(parameter.substr(colon+1));
115 if ((njoins<1) || (nsecs<1))
117 source->WriteNumeric(Numerics::InvalidModeParameter(channel, this, parameter));
118 return MODEACTION_DENY;
121 ext.set(channel, new joinfloodsettings(nsecs, njoins));
122 return MODEACTION_ALLOW;
125 void SerializeParam(Channel* chan, const joinfloodsettings* jfs, std::string& out)
127 out.append(ConvToStr(jfs->joins)).push_back(':');
128 out.append(ConvToStr(jfs->secs));
132 class ModuleJoinFlood : public Module
142 void ReadConfig(ConfigStatus&) CXX11_OVERRIDE
144 ConfigTag* tag = ServerInstance->Config->ConfValue("joinflood");
145 duration = tag->getDuration("duration", 60, 10, 600);
148 ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
152 joinfloodsettings *f = jf.ext.get(chan);
153 if (f && f->islocked())
155 user->WriteNumeric(ERR_UNAVAILRESOURCE, chan->name, "This channel is temporarily unavailable (+j is set). Please try again later.");
159 return MOD_RES_PASSTHRU;
162 void OnUserJoin(Membership* memb, bool sync, bool created, CUList& excepts) CXX11_OVERRIDE
164 /* We arent interested in JOIN events caused by a network burst */
168 joinfloodsettings *f = jf.ext.get(memb->chan);
170 /* But all others are OK */
171 if ((f) && (!f->islocked()))
178 memb->chan->WriteNotice(InspIRCd::Format("This channel has been closed to new users for %u seconds because there have been more than %d joins in %d seconds.", duration, f->joins, f->secs));
183 Version GetVersion() CXX11_OVERRIDE
185 return Version("Provides channel mode +j, join flood protection", VF_VENDOR);
189 MODULE_INIT(ModuleJoinFlood)