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/* packet-airopeek.c
*
* Routines for the disassembly airopeek encapsulated wireless
* traces (tested with frames captured from a Cisco WCS).
*
* $Id$
*
* Copyright 2007 Joerg Mayer (see AUTHORS file)
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* 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.
*/
/*
* TODO: Decode meta information.
* Check on fillup bytes in capture (fcs sometimes wrong)
* From:
* http://www.cisco.com/univercd/cc/td/doc/product/wireless/pahcont/oweb.pdf
* "It will include information on timestamp, signal strength, packet size
* and so on"
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <glib.h>
#include <epan/packet.h>
static int proto_airopeek = -1;
static gint hf_airopeek_unknown1 = -1;
static gint hf_airopeek_unknown2 = -1;
static gint hf_airopeek_unknown3 = -1;
static gint hf_airopeek_unknown4 = -1;
static gint ett_airopeek = -1;
static dissector_handle_t ieee80211_handle;
static void
dissect_airopeek(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
tvbuff_t *next_tvb;
proto_tree *airopeek_tree = NULL;
proto_item *ti = NULL;
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_item(tree, proto_airopeek, tvb, 0, -1, FALSE);
airopeek_tree = proto_item_add_subtree(ti, ett_airopeek);
proto_tree_add_item(airopeek_tree, hf_airopeek_unknown1, tvb, 0, 2, FALSE);
proto_tree_add_item(airopeek_tree, hf_airopeek_unknown2, tvb, 2, 2, FALSE);
proto_tree_add_item(airopeek_tree, hf_airopeek_unknown3, tvb, 4, 2, FALSE);
proto_tree_add_item(airopeek_tree, hf_airopeek_unknown4, tvb, 6, 14, FALSE);
}
next_tvb = tvb_new_subset(tvb, 20, -1, -1);
call_dissector(ieee80211_handle, next_tvb, pinfo, tree);
}
void
proto_register_airopeek(void)
{
static hf_register_info hf[] = {
{ &hf_airopeek_unknown1,
{ "Unknown1", "airopeek.unknown1", FT_BYTES, BASE_NONE, NULL,
0x0, "", HFILL }},
{ &hf_airopeek_unknown2,
{ "caplength1", "airopeek.unknown2", FT_UINT16, BASE_DEC, NULL,
0x0, "", HFILL }},
{ &hf_airopeek_unknown3,
{ "caplength2", "airopeek.unknown3", FT_UINT16, BASE_DEC, NULL,
0x0, "", HFILL }},
{ &hf_airopeek_unknown4,
{ "Unknown4", "airopeek.unknown4", FT_BYTES, BASE_NONE, NULL,
0x0, "", HFILL }},
};
static gint *ett[] = {
&ett_airopeek,
};
proto_airopeek = proto_register_protocol(
"Airopeek encapsulated IEEE 802.11", "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;
ieee80211_handle = find_dissector("wlan_datapad");
airopeek_handle = create_dissector_handle(dissect_airopeek, proto_airopeek);
dissector_add("udp.port", 5000, airopeek_handle);
}
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