2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
5 * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
6 * Copyright (C) 2006 Craig Edwards <craigedwards@brainbox.cc>
8 * This file is part of InspIRCd. InspIRCd is free software: you can
9 * redistribute it and/or modify it under the terms of the GNU General Public
10 * License as published by the Free Software Foundation, version 2.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 class ModuleConnFlood : public Module
26 int seconds, timeout, boot_wait;
28 unsigned int maxconns;
35 : conns(0), throttled(false)
39 Version GetVersion() CXX11_OVERRIDE
41 return Version("Connection throttle", VF_VENDOR);
44 void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
46 /* read configuration variables */
47 ConfigTag* tag = ServerInstance->Config->ConfValue("connflood");
48 /* throttle configuration */
49 seconds = tag->getInt("seconds");
50 maxconns = tag->getInt("maxconns");
51 timeout = tag->getInt("timeout");
52 quitmsg = tag->getString("quitmsg");
54 /* seconds to wait when the server just booted */
55 boot_wait = tag->getInt("bootwait");
57 first = ServerInstance->Time();
60 ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE
63 return MOD_RES_PASSTHRU;
65 time_t next = ServerInstance->Time();
67 if ((ServerInstance->startup_time + boot_wait) > next)
68 return MOD_RES_PASSTHRU;
70 /* time difference between first and latest connection */
71 time_t tdiff = next - first;
73 /* increase connection count */
78 if (tdiff > seconds + timeout)
82 ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle deactivated");
83 return MOD_RES_PASSTHRU;
86 ServerInstance->Users->QuitUser(user, quitmsg);
92 if (conns >= maxconns)
95 ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle activated");
96 ServerInstance->Users->QuitUser(user, quitmsg);
105 return MOD_RES_PASSTHRU;
109 MODULE_INIT(ModuleConnFlood)