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 /* $ModDesc: Connection throttle */
26 class ModuleConnFlood : public Module
29 int seconds, timeout, boot_wait;
31 unsigned int maxconns;
38 : conns(0), throttled(false)
41 Implementation eventlist[] = { I_OnRehash, I_OnUserRegister };
42 ServerInstance->Modules->Attach(eventlist, this, 2);
45 virtual Version GetVersion()
47 return Version("Connection throttle", VF_VENDOR);
52 /* read configuration variables */
53 ConfigTag* tag = ServerInstance->Config->ConfValue("connflood");
54 /* throttle configuration */
55 seconds = tag->getInt("seconds");
56 maxconns = tag->getInt("maxconns");
57 timeout = tag->getInt("timeout");
58 quitmsg = tag->getString("quitmsg");
60 /* seconds to wait when the server just booted */
61 boot_wait = tag->getInt("bootwait");
63 first = ServerInstance->Time();
66 virtual ModResult OnUserRegister(LocalUser* user)
68 time_t next = ServerInstance->Time();
70 if ((ServerInstance->startup_time + boot_wait) > next)
71 return MOD_RES_PASSTHRU;
73 /* time difference between first and latest connection */
74 time_t tdiff = next - first;
76 /* increase connection count */
81 if (tdiff > seconds + timeout)
85 ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle deactivated");
86 return MOD_RES_PASSTHRU;
89 ServerInstance->Users->QuitUser(user, quitmsg);
95 if (conns >= maxconns)
98 ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle activated");
99 ServerInstance->Users->QuitUser(user, quitmsg);
108 return MOD_RES_PASSTHRU;
111 virtual void OnRehash(User* user)
118 MODULE_INIT(ModuleConnFlood)