-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ * Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
*
- * 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 "inspircd.h"
#include "xline.h"
-/* $ModDesc: Throttles the connections of any users who try connect flood */
+/* $ModDesc: Throttles the connections of IP ranges who try to connect flood. */
class ModuleConnectBan : public Module
{
- private:
clonemap connects;
unsigned int threshold;
unsigned int banduration;
unsigned int ipv4_cidr;
unsigned int ipv6_cidr;
+
public:
- ModuleConnectBan(InspIRCd* Me) : Module(Me)
+ void init() CXX11_OVERRIDE
{
- Implementation eventlist[] = { I_OnUserConnect, I_OnGarbageCollect, I_OnRehash };
- ServerInstance->Modules->Attach(eventlist, this, 3);
+ Implementation eventlist[] = { I_OnSetUserIP, I_OnGarbageCollect, I_OnRehash };
+ ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
OnRehash(NULL);
}
- virtual ~ModuleConnectBan()
- {
- }
-
- virtual Version GetVersion()
+ Version GetVersion() CXX11_OVERRIDE
{
- return Version("$Id$", VF_VENDOR,API_VERSION);
+ return Version("Throttles the connections of IP ranges who try to connect flood.", VF_VENDOR);
}
- virtual void OnRehash(User* user)
+ void OnRehash(User* user) CXX11_OVERRIDE
{
- ConfigReader Conf(ServerInstance);
- std::string duration;
+ ConfigTag* tag = ServerInstance->Config->ConfValue("connectban");
- ipv4_cidr = Conf.ReadInteger("connectban", "ipv4cidr", 0, true);
+ ipv4_cidr = tag->getInt("ipv4cidr", 32);
if (ipv4_cidr == 0)
ipv4_cidr = 32;
- ipv6_cidr = Conf.ReadInteger("connectban", "ipv6cidr", 0, true);
+ ipv6_cidr = tag->getInt("ipv6cidr", 128);
if (ipv6_cidr == 0)
ipv6_cidr = 128;
- threshold = Conf.ReadInteger("connectban", "threshold", 0, true);
-
+ threshold = tag->getInt("threshold", 10);
if (threshold == 0)
threshold = 10;
- duration = Conf.ReadValue("connectban", "duration", 0, true);
-
- if (duration.empty())
- duration = "10m";
-
- banduration = ServerInstance->Duration(duration);
+ banduration = InspIRCd::Duration(tag->getString("duration", "10m"));
+ if (banduration == 0)
+ banduration = 10*60;
}
- virtual void OnUserConnect(User *u)
+ void OnSetUserIP(LocalUser* u) CXX11_OVERRIDE
{
+ if (u->exempt)
+ return;
+
int range = 32;
clonemap::iterator i;
- switch (u->GetProtocolFamily())
+ switch (u->client_sa.sa.sa_family)
{
case AF_INET6:
range = ipv6_cidr;
break;
}
- i = connects.find(u->GetCIDRMask(range));
+ irc::sockets::cidr_mask mask(u->client_sa, range);
+ i = connects.find(mask);
if (i != connects.end())
{
if (i->second >= threshold)
{
// Create zline for set duration.
- ZLine* zl = new ZLine(ServerInstance, ServerInstance->Time(), banduration, ServerInstance->Config->ServerName, "Connect flooding", u->GetCIDRMask(range));
+ ZLine* zl = new ZLine(ServerInstance->Time(), banduration, ServerInstance->Config->ServerName, "Your IP range has been attempting to connect too many times in too short a duration. Wait a while, and you will be able to connect.", mask.str());
if (ServerInstance->XLines->AddLine(zl,NULL))
ServerInstance->XLines->ApplyLines();
else
delete zl;
- ServerInstance->SNO->WriteToSnoMask('x', "Connect flooding from IP range %s (%d)", u->GetCIDRMask(range), threshold);
+ std::string maskstr = mask.str();
+ std::string timestr = ServerInstance->TimeString(zl->expiry);
+ ServerInstance->SNO->WriteGlobalSno('x',"Module m_connectban added Z:line on *@%s to expire on %s: Connect flooding",
+ maskstr.c_str(), timestr.c_str());
+ ServerInstance->SNO->WriteGlobalSno('a', "Connect flooding from IP range %s (%d)", maskstr.c_str(), threshold);
connects.erase(i);
}
}
else
{
- connects[u->GetCIDRMask(range)] = 1;
+ connects[mask] = 1;
}
}
- virtual void OnGarbageCollect()
+ void OnGarbageCollect()
{
- ServerInstance->Logs->Log("m_connectban",DEBUG, "Clearing map.");
+ ServerInstance->Logs->Log("m_connectban", LOG_DEBUG, "Clearing map.");
connects.clear();
}
};