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/* packet-peekremote.c
*
* Routines for the disassembly of packets sent from Cisco WLAN
* Controllers, possibly other Cisco access points, and possibly
* other devices such as Aruba access points. See
*
* http://www.wildpackets.com/elements/omnipeek/OmniPeek_UserGuide.pdf
*
* which speaks of Aruba access points supporting remote capture and
* defaulting to port 5000 for this, and also speaks of Cisco access
* points supporting remote capture without any reference to a port
* number. The two types of remote capture are described separately;
* there's no indication of whether they use the same protocol for
* streaming packets but perhaps other protocols for, for example,
* discovery and setup, or whether they use different protocols
* for streaming packets.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 <glib.h>
#include <epan/packet.h>
static int proto_peekremote = -1;
static gint hf_peekremote_unknown1 = -1;
static gint hf_peekremote_unknown2 = -1;
static gint hf_peekremote_unknown3 = -1;
static gint hf_peekremote_unknown4 = -1;
static gint hf_peekremote_unknown5 = -1;
static gint hf_peekremote_unknown6 = -1;
static gint hf_peekremote_channel = -1;
static gint hf_peekremote_timestamp = -1;
static gint ett_peekremote = -1;
static dissector_handle_t ieee80211_handle;
static void
dissect_peekremote(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
tvbuff_t *next_tvb;
proto_tree *peekremote_tree = NULL;
proto_item *ti = NULL;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "AIROPEEK");
col_clear(pinfo->cinfo, COL_INFO);
if (tree) {
ti = proto_tree_add_item(tree, proto_peekremote, tvb, 0, -1, ENC_NA);
peekremote_tree = proto_item_add_subtree(ti, ett_peekremote);
proto_tree_add_item(peekremote_tree, hf_peekremote_unknown1, tvb, 0, 2, ENC_NA);
proto_tree_add_item(peekremote_tree, hf_peekremote_unknown2, tvb, 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(peekremote_tree, hf_peekremote_unknown3, tvb, 4, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(peekremote_tree, hf_peekremote_unknown4, tvb, 6, 5, ENC_NA);
proto_tree_add_item(peekremote_tree, hf_peekremote_timestamp, tvb, 11, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(peekremote_tree, hf_peekremote_unknown5, tvb, 15, 2, ENC_NA);
proto_tree_add_item(peekremote_tree, hf_peekremote_channel, tvb, 17, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(peekremote_tree, hf_peekremote_unknown6, tvb, 18, 2, ENC_NA);
}
next_tvb = tvb_new_subset_remaining(tvb, 20);
pinfo->pseudo_header->ieee_802_11.fcs_len = 4;
call_dissector(ieee80211_handle, next_tvb, pinfo, tree);
}
void
proto_register_peekremote(void)
{
static hf_register_info hf[] = {
{ &hf_peekremote_unknown1,
{ "Unknown1", "peekremote.unknown1", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL }},
{ &hf_peekremote_unknown2,
{ "caplength1", "peekremote.unknown2", FT_UINT16, BASE_DEC, NULL,
0x0, NULL, HFILL }},
{ &hf_peekremote_unknown3,
{ "caplength2", "peekremote.unknown3", FT_UINT16, BASE_DEC, NULL,
0x0, NULL, HFILL }},
{ &hf_peekremote_unknown4,
{ "Unknown4", "peekremote.unknown4", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL }},
{ &hf_peekremote_unknown5,
{ "Unknown5", "peekremote.unknown5", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL }},
{ &hf_peekremote_unknown6,
{ "Unknown6", "peekremote.unknown6", FT_BYTES, BASE_NONE, NULL,
0x0, NULL, HFILL }},
{ &hf_peekremote_timestamp,
{ "Timestamp?", "peekremote.timestamp", FT_UINT32, BASE_DEC, NULL,
0x0, NULL, HFILL }},
{ &hf_peekremote_channel,
{ "Channel", "peekremote.channel", FT_UINT8, BASE_DEC, NULL,
0x0, NULL, HFILL }},
};
static gint *ett[] = {
&ett_peekremote,
};
proto_peekremote = proto_register_protocol(
"AiroPeek/OmniPeek encapsulated IEEE 802.11", "PEEKREMOTE", "peekremote");
proto_register_field_array(proto_peekremote, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_peekremote(void)
{
dissector_handle_t peekremote_handle;
ieee80211_handle = find_dissector("wlan_datapad");
peekremote_handle = create_dissector_handle(dissect_peekremote, proto_peekremote);
dissector_add_uint("udp.port", 5000, peekremote_handle);
}
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