1/* 2 * OpenVPN -- An application to securely tunnel IP networks 3 * over a single UDP port, with support for SSL/TLS-based 4 * session authentication and key exchange, 5 * packet encryption, packet authentication, and 6 * packet compression. 7 * 8 * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 12 * as published by the Free Software Foundation. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program (see the file COPYING included with this 21 * distribution); if not, write to the Free Software Foundation, Inc., 22 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 */ 24 25#ifndef GREMLIN_H 26#define GREMLIN_H 27 28#ifdef ENABLE_DEBUG 29 30/* 31 * Gremlin options, presented as bitmask argument to --gremlin directive 32 */ 33 34#define GREMLIN_CONNECTION_FLOOD_SHIFT (0) 35#define GREMLIN_CONNECTION_FLOOD_MASK (0x07) 36 37#define GREMLIN_PACKET_FLOOD_SHIFT (3) 38#define GREMLIN_PACKET_FLOOD_MASK (0x03) 39 40#define GREMLIN_CORRUPT_SHIFT (5) 41#define GREMLIN_CORRUPT_MASK (0x03) 42 43#define GREMLIN_UP_DOWN_SHIFT (7) 44#define GREMLIN_UP_DOWN_MASK (0x03) 45 46/* 512:1/500 1024:1/100 1536:1/50 */ 47 48#define GREMLIN_DROP_SHIFT (9) 49#define GREMLIN_DROP_MASK (0x03) 50 51/* extract gremlin parms */ 52 53#define GREMLIN_CONNECTION_FLOOD_LEVEL(x) (((x)>>GREMLIN_CONNECTION_FLOOD_SHIFT) & GREMLIN_CONNECTION_FLOOD_MASK) 54#define GREMLIN_PACKET_FLOOD_LEVEL(x) (((x)>>GREMLIN_PACKET_FLOOD_SHIFT) & GREMLIN_PACKET_FLOOD_MASK) 55#define GREMLIN_CORRUPT_LEVEL(x) (((x)>>GREMLIN_CORRUPT_SHIFT) & GREMLIN_CORRUPT_MASK) 56#define GREMLIN_UP_DOWN_LEVEL(x) (((x)>>GREMLIN_UP_DOWN_SHIFT) & GREMLIN_UP_DOWN_MASK) 57#define GREMLIN_DROP_LEVEL(x) (((x)>>GREMLIN_DROP_SHIFT) & GREMLIN_DROP_MASK) 58 59#include "buffer.h" 60 61struct packet_flood_parms 62{ 63 int n_packets; 64 int packet_size; 65}; 66 67bool ask_gremlin (int flags); 68void corrupt_gremlin (struct buffer* buf, int flags); 69struct packet_flood_parms get_packet_flood_parms (int level); 70 71#endif 72#endif 73