2019-03-27 14:36:57 +01:00
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// swad_firewall.h: firewall to mitigate denial of service attacks
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2019-02-13 13:32:11 +01:00
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#ifndef _SWAD_FW
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#define _SWAD_FW
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/*
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SWAD (Shared Workspace At a Distance in Spanish),
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is a web platform developed at the University of Granada (Spain),
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and used to support university teaching.
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This file is part of SWAD core.
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2022-09-21 10:46:14 +02:00
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Copyright (C) 1999-2022 Antonio Ca<EFBFBD>as Vargas
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2019-02-13 13:32:11 +01:00
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*****************************************************************************/
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/************************** Public types and constants ***********************/
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/*****************************************************************************/
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2021-09-15 08:14:09 +02:00
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/* The maximum number of clicks in the interval
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should be large enough to prevent an IP from being banned
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due to automatic refresh when the user is viewing the last clicks. */
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#define Fw_CHECK_INTERVAL ((time_t)(30UL)) // Check clicks in the last 30 seconds
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#define Fw_MAX_CLICKS_IN_INTERVAL 150 // Maximum of 150 clicks allowed in 30 seconds
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// (5 clicks/s sustained for 30 s)
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#define Fw_TIME_BANNED ((time_t)(60UL*60UL)) // Ban IP for 1 hour
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#define Fw_TIME_TO_DELETE_OLD_CLICKS Fw_CHECK_INTERVAL // Remove clicks older than these seconds
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2019-02-13 13:32:11 +01:00
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/*****************************************************************************/
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/***************************** Public prototypes *****************************/
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/*****************************************************************************/
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2021-03-18 15:19:32 +01:00
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void Fir_CheckFirewallAndExitIfBanned (void);
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void Fir_CheckFirewallAndExitIfTooManyRequests (void);
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2019-02-13 15:06:02 +01:00
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2019-02-13 13:32:11 +01:00
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#endif
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