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/* packet-bofl.c
* Routines for Wellfleet BOFL dissection
* Author: Endoh Akira (endoh@netmarks.co.jp)
*
* $Id: packet-bofl.c,v 1.1 2003/02/27 02:45:42 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@unicom.net>
* Copyright 1998 Gerald Combs
*
* This program 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; either version 2
* of the License, or (at your option) any later version.
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#ifdef NEED_SNPRINTF_H
# include "snprintf.h"
#endif
#include <epan/packet.h>
#define ETHER_TYPE_BOFL 0x8102
#define BOFL_MIN_LEN 8
/* Initialize the protocol and registered fields */
static int proto_bofl = -1;
static int hf_bofl_pdu = -1;
static int hf_bofl_sequence = -1;
/* Initialize the subtree pointers */
static gint ett_bofl = -1;
/* Code to actually dissect the packets */
void
dissect_bofl(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *ti;
proto_tree *bofl_tree;
const guint len = tvb_length(tvb);
guint32 pdu, sequence;
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "BOFL");
if (len < BOFL_MIN_LEN) {
if (check_col(pinfo->cinfo, COL_INFO))
col_set_str(pinfo->cinfo, COL_INFO, "(packet too short)");
proto_tree_add_text(tree, tvb, 0, len,
"Wellfleet Breath of Life (packet too short)");
return;
}
pdu = tvb_get_ntohl(tvb, 0);
sequence = tvb_get_ntohl(tvb, 4);
if (check_col(pinfo->cinfo, COL_INFO)) {
col_clear(pinfo->cinfo, COL_INFO);
col_add_fstr(pinfo->cinfo, COL_INFO,
"PDU: 0x%x Sequence: %d", pdu, sequence);
}
if (tree) {
ti = proto_tree_add_item(tree, proto_bofl, tvb, 0, len, FALSE);
bofl_tree = proto_item_add_subtree(ti, ett_bofl);
proto_tree_add_uint(bofl_tree, hf_bofl_pdu, tvb, 0, 4, pdu);
proto_tree_add_uint(bofl_tree, hf_bofl_sequence, tvb, 4, 4, sequence);
if (len > 8)
proto_tree_add_text(bofl_tree, tvb, 8, len-8,
"Padding (%d byte)", len-8);
}
}
void
proto_register_bofl(void)
{
static hf_register_info hf[] = {
{ &hf_bofl_pdu,
{ "PDU", "bofl.pdu",
FT_UINT32, BASE_HEX, NULL, 0,
"PDU; normally equals 0x01010000 or 0x01011111", HFILL }
},
{ &hf_bofl_sequence,
{ "Sequence", "bofl.sequence",
FT_UINT32, BASE_DEC, NULL, 0,
"incremental counter", HFILL }
}
};
static gint *ett[] = {
&ett_bofl,
};
proto_bofl = proto_register_protocol("Wellfleet Breath of Life",
"BOFL", "bofl");
proto_register_field_array(proto_bofl, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_bofl(void)
{
dissector_handle_t bofl_handle;
bofl_handle = create_dissector_handle(dissect_bofl, proto_bofl);
dissector_add("ethertype", ETHER_TYPE_BOFL, bofl_handle);
}
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