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-rw-r--r--src/openvpn/gremlin.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/src/openvpn/gremlin.h b/src/openvpn/gremlin.h
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+/*
+ * OpenVPN -- An application to securely tunnel IP networks
+ * over a single UDP port, with support for SSL/TLS-based
+ * session authentication and key exchange,
+ * packet encryption, packet authentication, and
+ * packet compression.
+ *
+ * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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 (see the file COPYING included with this
+ * distribution); if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef GREMLIN_H
+#define GREMLIN_H
+
+#ifdef ENABLE_DEBUG
+
+/*
+ * Gremlin options, presented as bitmask argument to --gremlin directive
+ */
+
+#define GREMLIN_CONNECTION_FLOOD_SHIFT (0)
+#define GREMLIN_CONNECTION_FLOOD_MASK (0x07)
+
+#define GREMLIN_PACKET_FLOOD_SHIFT (3)
+#define GREMLIN_PACKET_FLOOD_MASK (0x03)
+
+#define GREMLIN_CORRUPT_SHIFT (5)
+#define GREMLIN_CORRUPT_MASK (0x03)
+
+#define GREMLIN_UP_DOWN_SHIFT (7)
+#define GREMLIN_UP_DOWN_MASK (0x03)
+
+/* 512:1/500 1024:1/100 1536:1/50 */
+
+#define GREMLIN_DROP_SHIFT (9)
+#define GREMLIN_DROP_MASK (0x03)
+
+/* extract gremlin parms */
+
+#define GREMLIN_CONNECTION_FLOOD_LEVEL(x) (((x)>>GREMLIN_CONNECTION_FLOOD_SHIFT) & GREMLIN_CONNECTION_FLOOD_MASK)
+#define GREMLIN_PACKET_FLOOD_LEVEL(x) (((x)>>GREMLIN_PACKET_FLOOD_SHIFT) & GREMLIN_PACKET_FLOOD_MASK)
+#define GREMLIN_CORRUPT_LEVEL(x) (((x)>>GREMLIN_CORRUPT_SHIFT) & GREMLIN_CORRUPT_MASK)
+#define GREMLIN_UP_DOWN_LEVEL(x) (((x)>>GREMLIN_UP_DOWN_SHIFT) & GREMLIN_UP_DOWN_MASK)
+#define GREMLIN_DROP_LEVEL(x) (((x)>>GREMLIN_DROP_SHIFT) & GREMLIN_DROP_MASK)
+
+#include "buffer.h"
+
+struct packet_flood_parms
+{
+ int n_packets;
+ int packet_size;
+};
+
+bool ask_gremlin (int flags);
+void corrupt_gremlin (struct buffer* buf, int flags);
+struct packet_flood_parms get_packet_flood_parms (int level);
+
+#endif
+#endif