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
28 unsigned int boot_wait;
30 unsigned int maxconns;
37 : conns(0), throttled(false)
41 Version GetVersion() CXX11_OVERRIDE
43 return Version("Connection throttle", VF_VENDOR);
46 void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
48 /* read configuration variables */
49 ConfigTag* tag = ServerInstance->Config->ConfValue("connflood");
50 /* throttle configuration */
51 seconds = tag->getDuration("period", tag->getDuration("seconds", 30));
52 maxconns = tag->getUInt("maxconns", 3);
53 timeout = tag->getDuration("timeout", 30);
54 quitmsg = tag->getString("quitmsg");
56 /* seconds to wait when the server just booted */
57 boot_wait = tag->getDuration("bootwait", 60*2);
59 first = ServerInstance->Time();
62 ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE
65 return MOD_RES_PASSTHRU;
67 time_t next = ServerInstance->Time();
69 if ((ServerInstance->startup_time + boot_wait) > next)
70 return MOD_RES_PASSTHRU;
72 /* time difference between first and latest connection */
73 time_t tdiff = next - first;
75 /* increase connection count */
80 if (tdiff > seconds + timeout)
84 ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle deactivated");
85 return MOD_RES_PASSTHRU;
88 ServerInstance->Users->QuitUser(user, quitmsg);
94 if (conns >= maxconns)
97 ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle activated");
98 ServerInstance->Users->QuitUser(user, quitmsg);
107 return MOD_RES_PASSTHRU;
111 MODULE_INIT(ModuleConnFlood)