X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_connflood.cpp;h=f77691e3276a8efe2f6649b4da04d31a588b79fc;hb=a5d110282a864fd2e91b51ce360a977cd0643657;hp=71e52fd01ad8b1e134968d32567b2b1031deebc8;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/src/modules/m_connflood.cpp b/src/modules/m_connflood.cpp
index 71e52fd01..f77691e32 100644
--- a/src/modules/m_connflood.cpp
+++ b/src/modules/m_connflood.cpp
@@ -1 +1,125 @@
-/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
 * See: http://www.inspircd.org/wiki/index.php/Credits
 *
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

#include "inspircd.h"
#include "users.h"
#include "modules.h"

/* $ModDesc: Connection throttle */

int conns = 0, throttled = 0;

class ModuleConnFlood : public Module
{
private:
	int seconds, maxconns, timeout, boot_wait;
	time_t first;
	std::string quitmsg;

	ConfigReader* conf;
	

public:
	ModuleConnFlood(InspIRCd* Me) : Module(Me)
	{
		
		InitConf();
	}

	virtual ~ModuleConnFlood()
	{
	}

	virtual Version GetVersion()
	{
		return Version(1,1,0,0,VF_VENDOR,API_VERSION);
	}

	void Implements(char* List)
	{
		List[I_OnRehash] = List[I_OnUserRegister] = 1;
	}
   
	void InitConf()
	{
		/* read configuration variables */
		conf = new ConfigReader(ServerInstance);
		/* 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 to wait when the server just booted */
		boot_wait = conf->ReadInteger("connflood", "bootwait", 0, true);

		first = ServerInstance->Time();
	}
 
	virtual int OnUserRegister(userrec* user)
	{
		time_t next = ServerInstance->Time();
		
		if ((ServerInstance->startup_time + boot_wait) > next)
			return 0;
		
		/* time difference between first and latest connection */
		time_t tdiff = next - first;

		/* increase connection count */
		conns++;

		if (throttled == 1)
		{
			if (tdiff > seconds + timeout)
			{
				/* expire throttle */
				throttled = 0;
				ServerInstance->WriteOpers("*** Connection throttle deactivated");
				return 0;
			}
			userrec::QuitUser(ServerInstance, user, quitmsg);
			return 1;
		}

		if (tdiff <= seconds)
		{
			if (conns >= maxconns)
			{
				throttled = 1;
				ServerInstance->WriteOpers("*** Connection throttle activated");
				userrec::QuitUser(ServerInstance, user, quitmsg);
				return 1;
			}
		}
		else
		{
			conns = 1;
			first = next;
		}
		return 0;
	}

	virtual void OnRehash(userrec* user, const std::string &parameter)
	{
		InitConf();
	}

};

MODULE_INIT(ModuleConnFlood)
\ No newline at end of file
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2006 Craig Edwards <craigedwards@brainbox.cc>
+ *
+ * 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"
+
+/* $ModDesc: Connection throttle */
+
+class ModuleConnFlood : public Module
+{
+private:
+	int seconds, timeout, boot_wait;
+	unsigned int conns;
+	unsigned int maxconns;
+	bool throttled;
+	time_t first;
+	std::string quitmsg;
+
+public:
+	ModuleConnFlood()
+		: conns(0), throttled(false)
+	{
+	}
+
+	void init()
+	{
+		InitConf();
+		Implementation eventlist[] = { I_OnRehash, I_OnUserRegister };
+		ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
+	}
+
+	virtual Version GetVersion()
+	{
+		return Version("Connection throttle", VF_VENDOR);
+	}
+
+	void InitConf()
+	{
+		/* read configuration variables */
+		ConfigTag* tag = ServerInstance->Config->ConfValue("connflood");
+		/* throttle configuration */
+		seconds = tag->getInt("seconds");
+		maxconns = tag->getInt("maxconns");
+		timeout = tag->getInt("timeout");
+		quitmsg = tag->getString("quitmsg");
+
+		/* seconds to wait when the server just booted */
+		boot_wait = tag->getInt("bootwait");
+
+		first = ServerInstance->Time();
+	}
+
+	virtual ModResult OnUserRegister(LocalUser* user)
+	{
+		if (user->exempt)
+			return MOD_RES_PASSTHRU;
+
+		time_t next = ServerInstance->Time();
+
+		if ((ServerInstance->startup_time + boot_wait) > next)
+			return MOD_RES_PASSTHRU;
+
+		/* time difference between first and latest connection */
+		time_t tdiff = next - first;
+
+		/* increase connection count */
+		conns++;
+
+		if (throttled)
+		{
+			if (tdiff > seconds + timeout)
+			{
+				/* expire throttle */
+				throttled = false;
+				ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle deactivated");
+				return MOD_RES_PASSTHRU;
+			}
+
+			ServerInstance->Users->QuitUser(user, quitmsg);
+			return MOD_RES_DENY;
+		}
+
+		if (tdiff <= seconds)
+		{
+			if (conns >= maxconns)
+			{
+				throttled = true;
+				ServerInstance->SNO->WriteGlobalSno('a', "Connection throttle activated");
+				ServerInstance->Users->QuitUser(user, quitmsg);
+				return MOD_RES_DENY;
+			}
+		}
+		else
+		{
+			conns = 1;
+			first = next;
+		}
+		return MOD_RES_PASSTHRU;
+	}
+
+	virtual void OnRehash(User* user)
+	{
+		InitConf();
+	}
+
+};
+
+MODULE_INIT(ModuleConnFlood)