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/* packet-airopeek.c
* Routines for AiroPeek capture file dissection
*
* $Id: packet-airopeek.c,v 1.1 2002/01/29 09:45:55 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* Copied from README.developer
*
* 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
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <glib.h>
#include <epan/packet.h>
#include "packet-ieee80211.h"
/* protocol */
static int proto_airopeek = -1;
/* header fields */
static int hf_airopeek_data_rate = -1;
static int hf_airopeek_channel = -1;
static int hf_airopeek_signal_strength = -1;
static gint ett_airopeek = -1;
static dissector_handle_t ieee80211_fixed_handle;
static void
dissect_airopeek(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *airopeek_tree;
proto_item *ti;
guint8 data_rate;
guint8 signal_strength;
tvbuff_t *next_tvb;
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "AiroPeek");
if (check_col(pinfo->cinfo, COL_INFO))
col_clear(pinfo->cinfo, COL_INFO);
if (tree) {
ti = proto_tree_add_protocol_format(tree, proto_airopeek,
tvb, 0, 3, "AiroPeek Radio Information");
airopeek_tree = proto_item_add_subtree(ti, ett_airopeek);
data_rate = tvb_get_guint8(tvb, 0);
proto_tree_add_uint_format(airopeek_tree, hf_airopeek_data_rate,
tvb, 0, 1, data_rate,
"Data Rate: %g kb/s", .5*data_rate);
proto_tree_add_item(airopeek_tree, hf_airopeek_channel,
tvb, 1, 1, FALSE);
signal_strength = tvb_get_guint8(tvb, 2);
proto_tree_add_uint_format(airopeek_tree, hf_airopeek_data_rate,
tvb, 2, 1, data_rate,
"Signal Strength: %u%%", signal_strength);
}
/* dissect the 802.11 header next */
next_tvb = tvb_new_subset(tvb, 4, -1, -1);
call_dissector(ieee80211_fixed_handle, next_tvb, pinfo, tree);
}
void
proto_register_airopeek(void)
{
static hf_register_info hf[] = {
{ &hf_airopeek_data_rate,
{ "Data Rate", "airopeek.data_rate", FT_UINT8, BASE_DEC, NULL,
0x0, "", HFILL}},
{ &hf_airopeek_channel,
{ "Channel", "airopeek.channel", FT_UINT8, BASE_DEC, NULL,
0x0, "", HFILL}},
{ &hf_airopeek_signal_strength,
{ "Signal Strength", "airopeek.signal_strength", FT_UINT8, BASE_DEC, NULL,
0x0, "", HFILL}},
};
static gint *ett[] = {
&ett_airopeek
};
proto_airopeek = proto_register_protocol("AiroPeek radio information",
"AiroPeek", "airopeek");
proto_register_field_array(proto_airopeek, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_airopeek(void)
{
dissector_handle_t airopeek_handle;
/* handle for 802.11 dissector for fixed-length 802.11 headers */
ieee80211_fixed_handle = find_dissector("wlan_fixed");
airopeek_handle = create_dissector_handle(dissect_airopeek,
proto_airopeek);
dissector_add("wtap_encap", WTAP_ENCAP_AIROPEEK, airopeek_handle);
}
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