forked from osmocom/wireshark
![Michael Mann](/assets/img/avatar_default.png)
The preferences are still supported for backwards compatibility, but the heuristic_protos file has final say on the "preference" to enable/disable a heuristic dissector. Also add parameter to heur_dissector_add() for the "default" enable/disable of a heuristic dissector. With this parameter, a few more (presumably weak) heuristic dissectors have been "registered" but of course default to being disabled. Change-Id: I51bebb2146ef3fbb8418d4f5c7f2cb2b58003a22 Reviewed-on: https://code.wireshark.org/review/9610 Petri-Dish: Michael Mann <mmann78@netscape.net> Reviewed-by: Roland Knall <rknall@gmail.com> Reviewed-by: Hadriel Kaplan <hadrielk@yahoo.com> Reviewed-by: Michael Mann <mmann78@netscape.net>
711 lines
30 KiB
C
711 lines
30 KiB
C
/* packet-peekremote.c
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*
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* Routines for the disassembly of packets sent from Cisco WLAN
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* Controllers, possibly other Cisco access points, and possibly
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* other devices such as Aruba access points. See
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*
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* http://www.wildpackets.com/elements/omnipeek/OmniPeek_UserGuide.pdf
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*
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* which speaks of Aruba access points supporting remote capture and
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* defaulting to port 5000 for this, and also speaks of Cisco access
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* points supporting remote capture without any reference to a port
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* number. The two types of remote capture are described separately;
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* there's no indication of whether they use the same protocol for
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* streaming packets but perhaps other protocols for, for example,
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* discovery and setup, or whether they use different protocols
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* for streaming packets.
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*
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* Apparently Aruba supports several protocols, including Peek remote.
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* See the packet-aruba-erm dissector.
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*
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* Tested with frames captured from a Cisco WCS.
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*
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* Copyright 2007 Joerg Mayer (see AUTHORS file)
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* TODO: Decode meta information.
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* Check on fillup bytes in capture (fcs sometimes wrong)
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* From:
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* http://www.cisco.com/univercd/cc/td/doc/product/wireless/pahcont/oweb.pdf
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* "It will include information on timestamp, signal strength, packet size
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* and so on"
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*/
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#define NEW_PROTO_TREE_API
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#include "config.h"
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#include <wiretap/wtap.h>
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#include <epan/packet.h>
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#include <epan/expert.h>
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#define IS_ARUBA 0x01
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void proto_register_peekremote(void);
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void proto_reg_handoff_peekremote(void);
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static int proto_peekremote;
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/*
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* XXX - we don't have all the MCS index values here.
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* We should probably just show the MCS index as a number (those
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* numbers are used in 802.11), and have separate items for the
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* number of spatial streams, the modulation type, and the coding rate.
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* Note that some modes with more than one spatial stream use *different*
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* modulation types for the different streams. See section 20.6
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* "Parameters for HT MCSs" in 802.11-2012.
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*/
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static const value_string peekremote_mcs_index_vals[] = {
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{ 0, "Spatial streams: 1, Modulation type: BPSK, Codingrate: 1/2" },
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{ 1, "Spatial streams: 1, Modulation type: QPSK, Codingrate: 1/2" },
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{ 2, "Spatial streams: 1, Modulation type: QPSK, Codingrate: 3/4" },
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{ 3, "Spatial streams: 1, Modulation type: 16-QAM, Codingrate: 1/2" },
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{ 4, "Spatial streams: 1, Modulation type: 16-QAM, Codingrate: 3/4" },
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{ 5, "Spatial streams: 1, Modulation type: 64-QAM, Codingrate: 2/3" },
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{ 6, "Spatial streams: 1, Modulation type: 64-QAM, Codingrate: 3/4" },
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{ 7, "Spatial streams: 1, Modulation type: 64-QAM, Codingrate: 5/6" },
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{ 8, "Spatial streams: 2, Modulation type: BPSK, Codingrate: 1/2" },
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{ 9, "Spatial streams: 2, Modulation type: QPSK, Codingrate: 1/2" },
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{ 10, "Spatial streams: 2, Modulation type: QPSK, Codingrate: 3/4" },
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{ 11, "Spatial streams: 2, Modulation type: 16-QAM, Codingrate: 1/2" },
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{ 12, "Spatial streams: 2, Modulation type: 16-QAM, Codingrate: 3/4" },
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{ 13, "Spatial streams: 2, Modulation type: 64-QAM, Codingrate: 2/3" },
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{ 14, "Spatial streams: 2, Modulation type: 64-QAM, Codingrate: 3/4" },
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{ 15, "Spatial streams: 2, Modulation type: 64-QAM, Codingrate: 5/6" },
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{ 16, "Spatial streams: 3, Modulation type: BPSK, Codingrate: 1/2" },
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{ 17, "Spatial streams: 3, Modulation type: QPSK, Codingrate: 1/2" },
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{ 18, "Spatial streams: 3, Modulation type: QPSK, Codingrate: 3/4" },
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{ 19, "Spatial streams: 3, Modulation type: 16-QAM, Codingrate: 1/2" },
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{ 20, "Spatial streams: 3, Modulation type: 16-QAM, Codingrate: 3/4" },
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{ 21, "Spatial streams: 3, Modulation type: 64-QAM, Codingrate: 2/3" },
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{ 22, "Spatial streams: 3, Modulation type: 64-QAM, Codingrate: 3/4" },
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{ 23, "Spatial streams: 3, Modulation type: 64-QAM, Codingrate: 5/6" },
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{ 24, "Spatial streams: 4, Modulation type: BPSK, Codingrate: 1/2" },
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{ 25, "Spatial streams: 4, Modulation type: QPSK, Codingrate: 1/2" },
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{ 26, "Spatial streams: 4, Modulation type: QPSK, Codingrate: 3/4" },
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{ 27, "Spatial streams: 4, Modulation type: 16-QAM, Codingrate: 1/2" },
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{ 28, "Spatial streams: 4, Modulation type: 16-QAM, Codingrate: 3/4" },
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{ 29, "Spatial streams: 4, Modulation type: 64-QAM, Codingrate: 2/3" },
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{ 30, "Spatial streams: 4, Modulation type: 64-QAM, Codingrate: 3/4" },
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{ 31, "Spatial streams: 4, Modulation type: 64-QAM, Codingrate: 5/6" },
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{ 0, NULL }
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};
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static value_string_ext peekremote_mcs_index_vals_ext = VALUE_STRING_EXT_INIT(peekremote_mcs_index_vals);
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static const value_string peekremote_type_vals[] = {
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{ 6, "kMediaSpecificHdrType_Wireless3" },
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{ 0, NULL }
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};
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/*
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* Extended flags.
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*
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* Some determined from bug 10637, some determined from bug 9586,
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* and the ones present in both agree, so we're assuming that
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* the "remote Peek" protocol and the "Peek tagged" file format
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* use the same bits (which wouldn't be too surprising, as they
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* both come from Wildpackets).
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*/
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#define EXT_FLAG_20_MHZ_LOWER 0x00000001
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#define EXT_FLAG_20_MHZ_UPPER 0x00000002
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#define EXT_FLAG_40_MHZ 0x00000004
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#define EXT_FLAGS_BANDWIDTH 0x00000007
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#define EXT_FLAG_HALF_GI 0x00000008
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#define EXT_FLAG_FULL_GI 0x00000010
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#define EXT_FLAGS_GI 0x00000018
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#define EXT_FLAG_AMPDU 0x00000020
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#define EXT_FLAG_AMSDU 0x00000040
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#define EXT_FLAG_802_11ac 0x00000080
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#define EXT_FLAG_MCS_INDEX_USED 0x00000100
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#define EXT_FLAGS_RESERVED 0xFFFFFE00
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/* hfi elements */
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#define THIS_HF_INIT HFI_INIT(proto_peekremote)
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static header_field_info *hfi_peekremote = NULL;
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/* Common to both headers */
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static header_field_info hfi_peekremote_channel THIS_HF_INIT =
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{ "Channel", "peekremote.channel", FT_UINT16, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_signal_dbm THIS_HF_INIT =
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{ "Signal [dBm]", "peekremote.signal_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_noise_dbm THIS_HF_INIT =
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{ "Noise [dBm]", "peekremote.noise_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_packetlength THIS_HF_INIT =
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{ "Packet length", "peekremote.packetlength", FT_UINT16, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_slicelength THIS_HF_INIT =
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{ "Slice length", "peekremote.slicelength", FT_UINT16, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_flags THIS_HF_INIT =
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{ "Flags", "peekremote.flags", FT_UINT8, BASE_HEX, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_flags_control_frame THIS_HF_INIT =
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{ "Is a Control frame", "peekremote.flags.control_frame", FT_BOOLEAN, 8, TFS(&tfs_yes_no),
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0x01, NULL, HFILL };
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static header_field_info hfi_peekremote_flags_crc_error THIS_HF_INIT =
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{ "Has CRC error", "peekremote.flags.has_crc_error", FT_BOOLEAN, 8, TFS(&tfs_yes_no),
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0x02, NULL, HFILL };
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static header_field_info hfi_peekremote_flags_frame_error THIS_HF_INIT =
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{ "Has frame error", "peekremote.flags.has_frame_error", FT_BOOLEAN, 8, TFS(&tfs_yes_no),
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0x04, NULL, HFILL };
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static header_field_info hfi_peekremote_flags_reserved THIS_HF_INIT =
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{ "Reserved", "peekremote.flags.reserved", FT_UINT8, BASE_HEX, NULL,
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0xF8, "Must be zero", HFILL };
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static header_field_info hfi_peekremote_status THIS_HF_INIT =
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{ "Status", "peekremote.status", FT_UINT8, BASE_HEX, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_status_protected THIS_HF_INIT =
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{ "Protected", "peekremote.status.protected", FT_BOOLEAN, 8, TFS(&tfs_yes_no),
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0x04, NULL, HFILL };
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static header_field_info hfi_peekremote_status_with_decrypt_error THIS_HF_INIT =
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{ "With decrypt error", "peekremote.status.with_decrypt_error", FT_BOOLEAN, 8, TFS(&tfs_yes_no),
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0x08, NULL, HFILL };
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static header_field_info hfi_peekremote_status_with_short_preamble THIS_HF_INIT =
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{ "With short preamble", "peekremote.status.with_short_preamble", FT_BOOLEAN, 8, TFS(&tfs_yes_no),
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0x40, NULL, HFILL };
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static header_field_info hfi_peekremote_status_reserved THIS_HF_INIT =
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{ "Reserved", "peekremote.status.reserved", FT_UINT8, BASE_HEX, NULL,
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0xB3, "Must be zero", HFILL };
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static header_field_info hfi_peekremote_timestamp THIS_HF_INIT =
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{ "TSF timestamp", "peekremote.timestamp", FT_UINT64, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_mcs_index THIS_HF_INIT =
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{ "MCS index", "peekremote.mcs_index", FT_UINT16, BASE_DEC|BASE_EXT_STRING, &peekremote_mcs_index_vals_ext,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_signal_percent THIS_HF_INIT =
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{ "Signal [percent]", "peekremote.signal_percent", FT_UINT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_noise_percent THIS_HF_INIT =
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{ "Noise [percent]", "peekremote.noise_percent", FT_UINT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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/* Legacy header only */
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static header_field_info hfi_peekremote_speed THIS_HF_INIT =
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{ "Data rate [500kHz]", "peekremote.data_rate", FT_UINT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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/* New header only */
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static header_field_info hfi_peekremote_magic_number THIS_HF_INIT =
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{ "Magic number", "peekremote.magic_number", FT_UINT32, BASE_HEX, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_header_version THIS_HF_INIT =
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{ "Header version", "peekremote.header_version", FT_UINT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_header_size THIS_HF_INIT =
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{ "Header size", "peekremote.header_size", FT_UINT32, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_type THIS_HF_INIT =
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{ "Type", "peekremote.type", FT_UINT32, BASE_DEC, VALS(peekremote_type_vals),
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_frequency THIS_HF_INIT =
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{ "Frequency [Mhz]", "peekremote.frequency", FT_UINT32, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_band THIS_HF_INIT =
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{ "Band", "peekremote.band", FT_UINT32, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags THIS_HF_INIT =
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{ "Extended flags", "peekremote.extflags", FT_UINT32, BASE_HEX, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_20mhz_lower THIS_HF_INIT =
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{ "20 MHz Lower", "peekremote.extflags.20mhz_lower", FT_BOOLEAN, 32, TFS(&tfs_yes_no),
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EXT_FLAG_20_MHZ_LOWER, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_20mhz_upper THIS_HF_INIT =
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{ "20 MHz Upper", "peekremote.extflags.20mhz_upper", FT_BOOLEAN, 32, TFS(&tfs_yes_no),
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EXT_FLAG_20_MHZ_UPPER, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_40mhz THIS_HF_INIT =
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{ "40 MHz", "peekremote.extflags.40mhz", FT_BOOLEAN, 32, TFS(&tfs_yes_no),
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EXT_FLAG_40_MHZ, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_half_gi THIS_HF_INIT =
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{ "Half Guard Interval", "peekremote.extflags.half_gi", FT_BOOLEAN, 32, TFS(&tfs_yes_no),
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EXT_FLAG_HALF_GI, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_full_gi THIS_HF_INIT =
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{ "Full Guard Interval", "peekremote.extflags.full_gi", FT_BOOLEAN, 32, TFS(&tfs_yes_no),
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EXT_FLAG_FULL_GI, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_ampdu THIS_HF_INIT =
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{ "AMPDU", "peekremote.extflags.ampdu", FT_BOOLEAN, 32, TFS(&tfs_yes_no),
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EXT_FLAG_AMPDU, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_amsdu THIS_HF_INIT =
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{ "AMSDU", "peekremote.extflags.amsdu", FT_BOOLEAN, 32, TFS(&tfs_yes_no),
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EXT_FLAG_AMSDU, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_11ac THIS_HF_INIT =
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{ "802.11ac", "peekremote.extflags.11ac", FT_BOOLEAN, 32, TFS(&tfs_yes_no),
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EXT_FLAG_802_11ac, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_future_use THIS_HF_INIT =
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{ "MCS index used", "peekremote.extflags.future_use", FT_BOOLEAN, 32, TFS(&tfs_yes_no),
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EXT_FLAG_MCS_INDEX_USED, NULL, HFILL };
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static header_field_info hfi_peekremote_extflags_reserved THIS_HF_INIT =
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{ "Reserved", "peekremote.extflags.reserved", FT_UINT32, BASE_HEX, NULL,
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EXT_FLAGS_RESERVED, "Must be zero", HFILL };
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/* XXX - are the numbers antenna numbers? */
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static header_field_info hfi_peekremote_signal_1_dbm THIS_HF_INIT =
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{ "Signal 1 [dBm]", "peekremote.signal_1_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_signal_2_dbm THIS_HF_INIT =
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{ "Signal 2 [dBm]", "peekremote.signal_2_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_signal_3_dbm THIS_HF_INIT =
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{ "Signal 3 [dBm]", "peekremote.signal_3_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_signal_4_dbm THIS_HF_INIT =
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{ "Signal 4 [dBm]", "peekremote.signal_4_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_noise_1_dbm THIS_HF_INIT =
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{ "Noise 1 [dBm]", "peekremote.noise_1_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_noise_2_dbm THIS_HF_INIT =
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{ "Noise 2 [dBm]", "peekremote.noise_2_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_noise_3_dbm THIS_HF_INIT =
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{ "Noise 3 [dBm]", "peekremote.noise_3_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static header_field_info hfi_peekremote_noise_4_dbm THIS_HF_INIT =
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{ "Noise 4 [dBm]", "peekremote.noise_4_dbm", FT_INT8, BASE_DEC, NULL,
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0x0, NULL, HFILL };
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static expert_field ei_peekremote_unknown_header_version = EI_INIT;
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static expert_field ei_peekremote_invalid_header_size = EI_INIT;
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static gint ett_peekremote = -1;
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static gint ett_peekremote_flags = -1;
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static gint ett_peekremote_status = -1;
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static gint ett_peekremote_extflags = -1;
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static dissector_handle_t wlan_radio_handle;
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static int
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dissect_peekremote_extflags(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset)
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{
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proto_tree *extflags_tree;
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proto_item *ti_extflags;
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ti_extflags = proto_tree_add_item(tree, &hfi_peekremote_extflags, tvb, offset, 4, ENC_BIG_ENDIAN);
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extflags_tree = proto_item_add_subtree(ti_extflags, ett_peekremote_extflags);
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proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_20mhz_lower, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_20mhz_upper, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_40mhz, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_half_gi, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_full_gi, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_ampdu, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_amsdu, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_11ac, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_future_use, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(extflags_tree, &hfi_peekremote_extflags_reserved, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
|
|
return 4;
|
|
}
|
|
|
|
static int
|
|
dissect_peekremote_flags(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset)
|
|
{
|
|
proto_tree *flags_tree;
|
|
proto_item *ti_flags;
|
|
|
|
ti_flags = proto_tree_add_item(tree, &hfi_peekremote_flags, tvb, offset, 1, ENC_NA);
|
|
flags_tree = proto_item_add_subtree(ti_flags, ett_peekremote_flags);
|
|
proto_tree_add_item(flags_tree, &hfi_peekremote_flags_control_frame, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(flags_tree, &hfi_peekremote_flags_crc_error, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(flags_tree, &hfi_peekremote_flags_frame_error, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(flags_tree, &hfi_peekremote_flags_reserved, tvb, offset, 1, ENC_NA);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
dissect_peekremote_status(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset)
|
|
{
|
|
proto_tree *status_tree;
|
|
proto_item *ti_status;
|
|
|
|
ti_status = proto_tree_add_item(tree, &hfi_peekremote_status, tvb, offset, 1, ENC_NA);
|
|
status_tree = proto_item_add_subtree(ti_status, ett_peekremote_status);
|
|
proto_tree_add_item(status_tree, &hfi_peekremote_status_protected, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(status_tree, &hfi_peekremote_status_with_decrypt_error, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(status_tree, &hfi_peekremote_status_with_short_preamble, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(status_tree, &hfi_peekremote_status_reserved, tvb, offset, 1, ENC_NA);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static gboolean
|
|
dissect_peekremote_new(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *u _U_)
|
|
{
|
|
static const guint8 magic[4] = { 0x00, 0xFF, 0xAB, 0xCD };
|
|
int offset = 0;
|
|
proto_tree *peekremote_tree = NULL;
|
|
proto_item *ti = NULL;
|
|
proto_item *ti_header_version, *ti_header_size;
|
|
guint8 header_version;
|
|
guint header_size;
|
|
struct ieee_802_11_phdr phdr;
|
|
guint32 extflags;
|
|
guint16 frequency;
|
|
guint16 mcs_index;
|
|
tvbuff_t *next_tvb;
|
|
|
|
if (tvb_memeql(tvb, 0, magic, 4) == -1) {
|
|
/*
|
|
* Not big enough to hold the magic number, or doesn't start
|
|
* with the magic number.
|
|
*/
|
|
return FALSE;
|
|
}
|
|
|
|
/* We don't have any 802.11 metadata yet. */
|
|
phdr.fcs_len = 4; /* has an FCS */
|
|
phdr.decrypted = FALSE;
|
|
phdr.datapad = FALSE;
|
|
phdr.phy = PHDR_802_11_PHY_UNKNOWN;
|
|
phdr.presence_flags = 0;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PEEKREMOTE");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
ti = proto_tree_add_item(tree, hfi_peekremote, tvb, 0, -1, ENC_NA);
|
|
peekremote_tree = proto_item_add_subtree(ti, ett_peekremote);
|
|
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_magic_number, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
header_version = tvb_get_guint8(tvb, offset);
|
|
ti_header_version = proto_tree_add_uint(peekremote_tree, &hfi_peekremote_header_version, tvb, offset, 1, header_version);
|
|
offset += 1;
|
|
header_size = tvb_get_ntohl(tvb, offset);
|
|
ti_header_size = proto_tree_add_uint(peekremote_tree, &hfi_peekremote_header_size, tvb, offset, 4, header_size);
|
|
offset += 4;
|
|
switch (header_version) {
|
|
|
|
case 2:
|
|
if (header_size != 55) {
|
|
expert_add_info(pinfo, ti_header_size, &ei_peekremote_invalid_header_size);
|
|
if (header_size > 9)
|
|
offset += (header_size - 9);
|
|
} else {
|
|
phdr.presence_flags |=
|
|
PHDR_802_11_HAS_CHANNEL|
|
|
PHDR_802_11_HAS_SIGNAL_PERCENT|
|
|
PHDR_802_11_HAS_NOISE_PERCENT|
|
|
PHDR_802_11_HAS_SIGNAL_DBM|
|
|
PHDR_802_11_HAS_NOISE_DBM|
|
|
PHDR_802_11_HAS_TSF_TIMESTAMP;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_type, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
mcs_index = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_mcs_index, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
phdr.channel = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_channel, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
frequency = tvb_get_ntohl(tvb, offset);
|
|
if (frequency != 0) {
|
|
phdr.presence_flags |= PHDR_802_11_HAS_FREQUENCY;
|
|
phdr.frequency = frequency;
|
|
}
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_frequency, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_band, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset +=4;
|
|
extflags = tvb_get_ntohl(tvb, offset);
|
|
if (extflags & EXT_FLAG_802_11ac) {
|
|
guint i;
|
|
phdr.phy = PHDR_802_11_PHY_11AC;
|
|
phdr.phy_info.info_11ac.presence_flags = 0;
|
|
/*
|
|
* XXX - this probably has only one user, so only one MCS index
|
|
* and only one NSS, but where's the NSS?
|
|
*/
|
|
for (i = 0; i < 4; i++) {
|
|
phdr.phy_info.info_11ac.nss[i] = 0;
|
|
}
|
|
} else {
|
|
phdr.phy = PHDR_802_11_PHY_11N;
|
|
phdr.phy_info.info_11n.presence_flags = PHDR_802_11N_HAS_MCS_INDEX;
|
|
phdr.phy_info.info_11n.mcs_index = mcs_index;
|
|
}
|
|
offset += dissect_peekremote_extflags(tvb, pinfo, peekremote_tree, offset);
|
|
phdr.signal_percent = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_percent, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
phdr.noise_percent = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_percent, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
phdr.signal_dbm = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
phdr.noise_dbm = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_1_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_2_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_3_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_4_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_1_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_2_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_3_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_4_dbm, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_packetlength, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_slicelength, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
offset += dissect_peekremote_flags(tvb, pinfo, peekremote_tree, offset);
|
|
offset += dissect_peekremote_status(tvb, pinfo, peekremote_tree, offset);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_timestamp, tvb, offset, 8, ENC_BIG_ENDIAN);
|
|
phdr.tsf_timestamp = tvb_get_ntoh64(tvb, offset);
|
|
offset += 8;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
expert_add_info(pinfo, ti_header_version, &ei_peekremote_unknown_header_version);
|
|
if (header_size > 9)
|
|
offset += (header_size - 9);
|
|
break;
|
|
}
|
|
|
|
proto_item_set_end(ti, tvb, offset);
|
|
next_tvb = tvb_new_subset_remaining(tvb, offset);
|
|
call_dissector_with_data(wlan_radio_handle, next_tvb, pinfo, tree, &phdr);
|
|
return TRUE;
|
|
}
|
|
|
|
static int
|
|
dissect_peekremote_legacy(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
|
|
{
|
|
tvbuff_t *next_tvb;
|
|
proto_tree *peekremote_tree = NULL;
|
|
proto_item *ti = NULL;
|
|
struct ieee_802_11_phdr phdr;
|
|
guint8 signal_percent;
|
|
|
|
/*
|
|
* Check whether this is peekremote-ng, and dissect it as such if it
|
|
* is.
|
|
*/
|
|
if (dissect_peekremote_new(tvb, pinfo, tree, data)) {
|
|
/* Yup, it was peekremote-ng, and it's been dissected as such. */
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PEEKREMOTE");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_item(tree, hfi_peekremote, tvb, 0, -1, ENC_NA);
|
|
peekremote_tree = proto_item_add_subtree(ti, ett_peekremote);
|
|
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_dbm, tvb, 0, 1, ENC_NA);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_dbm, tvb, 1, 1, ENC_NA);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_packetlength, tvb, 2, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_slicelength, tvb, 4, 2, ENC_BIG_ENDIAN);
|
|
dissect_peekremote_flags(tvb, pinfo, peekremote_tree, 6);
|
|
dissect_peekremote_status(tvb, pinfo, peekremote_tree, 7);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_timestamp, tvb, 8, 8, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_speed, tvb, 16, 1, ENC_NA);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_channel, tvb, 17, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_signal_percent, tvb, 18, 1, ENC_NA);
|
|
proto_tree_add_item(peekremote_tree, &hfi_peekremote_noise_percent, tvb, 19, 1, ENC_NA);
|
|
}
|
|
signal_percent = tvb_get_guint8(tvb, 18);
|
|
proto_item_set_end(ti, tvb, 20);
|
|
next_tvb = tvb_new_subset_remaining(tvb, 20);
|
|
/* When signal = 100 % and coming from ARUBA ERM, it is TX packet and there is no FCS */
|
|
if (GPOINTER_TO_INT(data) == IS_ARUBA && signal_percent == 100) {
|
|
phdr.fcs_len = 0; /* TX packet, no FCS */
|
|
} else {
|
|
phdr.fcs_len = 4; /* We have an FCS */
|
|
}
|
|
phdr.decrypted = FALSE;
|
|
phdr.phy = PHDR_802_11_PHY_UNKNOWN;
|
|
phdr.presence_flags =
|
|
PHDR_802_11_HAS_CHANNEL|
|
|
PHDR_802_11_HAS_DATA_RATE|
|
|
PHDR_802_11_HAS_SIGNAL_PERCENT|
|
|
PHDR_802_11_HAS_NOISE_PERCENT|
|
|
PHDR_802_11_HAS_SIGNAL_DBM|
|
|
PHDR_802_11_HAS_NOISE_DBM|
|
|
PHDR_802_11_HAS_TSF_TIMESTAMP;
|
|
phdr.channel = tvb_get_guint8(tvb, 17);
|
|
phdr.data_rate = tvb_get_guint8(tvb, 16);
|
|
phdr.signal_percent = tvb_get_guint8(tvb, 18);
|
|
phdr.noise_percent = tvb_get_guint8(tvb, 18);
|
|
phdr.signal_dbm = tvb_get_guint8(tvb, 0);
|
|
phdr.noise_dbm = tvb_get_guint8(tvb, 1);
|
|
phdr.tsf_timestamp = tvb_get_ntoh64(tvb, 8);
|
|
|
|
return 20 + call_dissector_with_data(wlan_radio_handle, next_tvb, pinfo, tree, &phdr);
|
|
}
|
|
|
|
void
|
|
proto_register_peekremote(void)
|
|
{
|
|
#ifndef HAVE_HFI_SECTION_INIT
|
|
static header_field_info *hfi[] = {
|
|
&hfi_peekremote_signal_dbm,
|
|
&hfi_peekremote_noise_dbm,
|
|
&hfi_peekremote_packetlength,
|
|
&hfi_peekremote_slicelength,
|
|
&hfi_peekremote_flags,
|
|
&hfi_peekremote_flags_control_frame,
|
|
&hfi_peekremote_flags_crc_error,
|
|
&hfi_peekremote_flags_frame_error,
|
|
&hfi_peekremote_flags_reserved,
|
|
&hfi_peekremote_status,
|
|
&hfi_peekremote_status_protected,
|
|
&hfi_peekremote_status_with_decrypt_error,
|
|
&hfi_peekremote_status_with_short_preamble,
|
|
&hfi_peekremote_status_reserved,
|
|
&hfi_peekremote_timestamp,
|
|
&hfi_peekremote_speed,
|
|
&hfi_peekremote_channel,
|
|
&hfi_peekremote_magic_number,
|
|
&hfi_peekremote_header_version,
|
|
&hfi_peekremote_header_size,
|
|
&hfi_peekremote_type,
|
|
&hfi_peekremote_mcs_index,
|
|
&hfi_peekremote_signal_percent,
|
|
&hfi_peekremote_noise_percent,
|
|
&hfi_peekremote_frequency,
|
|
&hfi_peekremote_band,
|
|
&hfi_peekremote_extflags,
|
|
&hfi_peekremote_extflags_20mhz_lower,
|
|
&hfi_peekremote_extflags_20mhz_upper,
|
|
&hfi_peekremote_extflags_40mhz,
|
|
&hfi_peekremote_extflags_half_gi,
|
|
&hfi_peekremote_extflags_full_gi,
|
|
&hfi_peekremote_extflags_ampdu,
|
|
&hfi_peekremote_extflags_amsdu,
|
|
&hfi_peekremote_extflags_11ac,
|
|
&hfi_peekremote_extflags_future_use,
|
|
&hfi_peekremote_extflags_reserved,
|
|
&hfi_peekremote_signal_1_dbm,
|
|
&hfi_peekremote_signal_2_dbm,
|
|
&hfi_peekremote_signal_3_dbm,
|
|
&hfi_peekremote_signal_4_dbm,
|
|
&hfi_peekremote_noise_1_dbm,
|
|
&hfi_peekremote_noise_2_dbm,
|
|
&hfi_peekremote_noise_3_dbm,
|
|
&hfi_peekremote_noise_4_dbm,
|
|
};
|
|
#endif
|
|
static gint *ett[] = {
|
|
&ett_peekremote,
|
|
&ett_peekremote_flags,
|
|
&ett_peekremote_status,
|
|
&ett_peekremote_extflags
|
|
};
|
|
static ei_register_info ei[] = {
|
|
{ &ei_peekremote_unknown_header_version, { "peekremote.unknown_header_version", PI_UNDECODED, PI_ERROR, "Unknown header version", EXPFILL }},
|
|
{ &ei_peekremote_invalid_header_size, { "peekremote.invalid_header_size", PI_UNDECODED, PI_ERROR, "Invalid header size for that header version", EXPFILL }},
|
|
};
|
|
expert_module_t *expert_peekremote;
|
|
|
|
proto_peekremote = proto_register_protocol(
|
|
"AiroPeek/OmniPeek encapsulated IEEE 802.11", "PEEKREMOTE", "peekremote");
|
|
hfi_peekremote = proto_registrar_get_nth(proto_peekremote);
|
|
proto_register_fields(proto_peekremote, hfi, array_length(hfi));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_peekremote = expert_register_protocol(proto_peekremote);
|
|
expert_register_field_array(expert_peekremote, ei, array_length(ei));
|
|
|
|
new_register_dissector("peekremote", dissect_peekremote_legacy, proto_peekremote);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_peekremote(void)
|
|
{
|
|
dissector_handle_t peekremote_handle;
|
|
|
|
wlan_radio_handle = find_dissector("wlan_radio");
|
|
|
|
peekremote_handle = new_create_dissector_handle(dissect_peekremote_legacy, proto_peekremote);
|
|
dissector_add_uint("udp.port", 5000, peekremote_handle);
|
|
|
|
heur_dissector_add("udp", dissect_peekremote_new, "OmniPeek Remote over UDP", "peekremote_udp", proto_peekremote, HEURISTIC_ENABLE);
|
|
}
|
|
|
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 2
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=2 tabstop=8 expandtab:
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* :indentSize=2:tabSize=8:noTabs=true:
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*/
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