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 int conns = 0, throttled = 0;
28 class ModuleConnFlood : public Module
31 int seconds, maxconns, timeout, boot_wait;
39 Implementation eventlist[] = { I_OnRehash, I_OnUserRegister };
40 ServerInstance->Modules->Attach(eventlist, this, 2);
43 virtual ~ModuleConnFlood()
47 virtual Version GetVersion()
49 return Version("Connection throttle", VF_VENDOR);
54 /* read configuration variables */
56 /* throttle configuration */
57 seconds = conf.ReadInteger("connflood", "seconds", 0, true);
58 maxconns = conf.ReadInteger("connflood", "maxconns", 0, true);
59 timeout = conf.ReadInteger("connflood", "timeout", 0, true);
60 quitmsg = conf.ReadValue("connflood", "quitmsg", 0);
62 /* seconds to wait when the server just booted */
63 boot_wait = conf.ReadInteger("connflood", "bootwait", 0, true);
65 first = ServerInstance->Time();
68 virtual ModResult OnUserRegister(LocalUser* user)
70 time_t next = ServerInstance->Time();
72 if ((ServerInstance->startup_time + boot_wait) > next)
73 return MOD_RES_PASSTHRU;
75 /* time difference between first and latest connection */
76 time_t tdiff = next - first;
78 /* increase connection count */
83 if (tdiff > seconds + timeout)
87 ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle deactivated");
88 return MOD_RES_PASSTHRU;
91 ServerInstance->Users->QuitUser(user, quitmsg);
97 if (conns >= maxconns)
100 ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle activated");
101 ServerInstance->Users->QuitUser(user, quitmsg);
110 return MOD_RES_PASSTHRU;
113 virtual void OnRehash(User* user)
120 MODULE_INIT(ModuleConnFlood)