1 files changed, 72 insertions, 0 deletions
diff --git a/src/openvpn/gremlin.h b/src/openvpn/gremlin.h
new file mode 100644
index 0000000..c0aeab1
--- /dev/null
+++ b/src/openvpn/gremlin.h
@@ -0,0 +1,72 @@
+/*
+ *  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