-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2007 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * Copyright (C) 2013, 2018-2021 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2012-2013 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2006-2007, 2010 Craig Edwards <brain@inspircd.org>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * This file is part of InspIRCd. InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
*
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include "users.h"
-#include "modules.h"
#include "inspircd.h"
-/* $ModDesc: Connection throttle */
-
-int conns = 0, throttled = 0;
-
class ModuleConnFlood : public Module
{
-private:
- int seconds, maxconns, timeout, boot_wait;
+ private:
+ unsigned int seconds;
+ unsigned int timeout;
+ unsigned int boot_wait;
+ unsigned int conns;
+ unsigned int maxconns;
+ bool throttled;
time_t first;
std::string quitmsg;
- ConfigReader* conf;
-
-
-public:
- ModuleConnFlood(InspIRCd* Me) : Module(Me)
+ static bool IsExempt(LocalUser* user)
{
-
- InitConf();
- }
+ // E-lined and already banned users shouldn't be hit.
+ if (user->exempt || user->quitting)
+ return true;
- virtual ~ModuleConnFlood()
- {
+ // Users in an exempt class shouldn't be hit.
+ return user->GetClass() && !user->GetClass()->config->getBool("useconnflood", true);
}
- virtual Version GetVersion()
+public:
+ ModuleConnFlood()
+ : conns(0), throttled(false)
{
- return Version(1,1,0,0,VF_VENDOR,API_VERSION);
}
- void Implements(char* List)
+ Version GetVersion() CXX11_OVERRIDE
{
- List[I_OnRehash] = List[I_OnUserRegister] = 1;
+ return Version("Throttles excessive connections to the server.", VF_VENDOR);
}
-
- void InitConf()
+
+ void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
/* read configuration variables */
- conf = new ConfigReader(ServerInstance);
+ ConfigTag* tag = ServerInstance->Config->ConfValue("connflood");
/* throttle configuration */
- seconds = conf->ReadInteger("connflood", "seconds", 0, true);
- maxconns = conf->ReadInteger("connflood", "maxconns", 0, true);
- timeout = conf->ReadInteger("connflood", "timeout", 0, true);
- quitmsg = conf->ReadValue("connflood", "quitmsg", 0);
+ seconds = tag->getDuration("period", tag->getDuration("seconds", 30));
+ maxconns = tag->getUInt("maxconns", 3);
+ timeout = tag->getDuration("timeout", 30);
+ quitmsg = tag->getString("quitmsg");
/* seconds to wait when the server just booted */
- boot_wait = conf->ReadInteger("connflood", "bootwait", 0, true);
+ boot_wait = tag->getDuration("bootwait", 60*2);
first = ServerInstance->Time();
}
-
- virtual int OnUserRegister(userrec* user)
+
+ ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE
{
+ if (IsExempt(user))
+ return MOD_RES_PASSTHRU;
+
time_t next = ServerInstance->Time();
-
+
if ((ServerInstance->startup_time + boot_wait) > next)
- return 0;
-
+ return MOD_RES_PASSTHRU;
+
/* time difference between first and latest connection */
time_t tdiff = next - first;
/* increase connection count */
conns++;
- if (throttled == 1)
+ if (throttled)
{
if (tdiff > seconds + timeout)
{
/* expire throttle */
- throttled = 0;
- ServerInstance->WriteOpers("*** Connection throttle deactivated");
- return 0;
+ throttled = false;
+ ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle deactivated");
+ return MOD_RES_PASSTHRU;
}
- userrec::QuitUser(ServerInstance, user, quitmsg);
- return 1;
+
+ ServerInstance->Users->QuitUser(user, quitmsg);
+ return MOD_RES_DENY;
}
if (tdiff <= seconds)
{
if (conns >= maxconns)
{
- throttled = 1;
- ServerInstance->WriteOpers("*** Connection throttle activated");
- userrec::QuitUser(ServerInstance, user, quitmsg);
- return 1;
+ throttled = true;
+ ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle activated");
+ ServerInstance->Users->QuitUser(user, quitmsg);
+ return MOD_RES_DENY;
}
}
else
conns = 1;
first = next;
}
- return 0;
- }
-
- virtual void OnRehash(userrec* user, const std::string ¶meter)
- {
- InitConf();
- }
-
-};
-
-
-class ModuleConnFloodFactory : public ModuleFactory
-{
-public:
- ModuleConnFloodFactory()
- {
- }
-
- ~ModuleConnFloodFactory()
- {
- }
-
- virtual Module * CreateModule(InspIRCd* Me)
- {
- return new ModuleConnFlood(Me);
+ return MOD_RES_PASSTHRU;
}
};
-
-extern "C" DllExport void * init_module( void )
-{
- return new ModuleConnFloodFactory;
-}
+MODULE_INIT(ModuleConnFlood)
projects / user / henk / code / inspircd.git / blobdiff