forked from osmocom/wireshark
143 lines
4.6 KiB
C
143 lines
4.6 KiB
C
/* packet-airopeek.c
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*
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* Routines for the disassembly airopeek encapsulated wireless
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* traces (tested with frames captured from a Cisco WCS).
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*
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* $Id$
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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static int proto_airopeek = -1;
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static gint hf_airopeek_unknown1 = -1;
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static gint hf_airopeek_unknown2 = -1;
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static gint hf_airopeek_unknown3 = -1;
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static gint hf_airopeek_unknown4 = -1;
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static gint hf_airopeek_unknown5 = -1;
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static gint hf_airopeek_unknown6 = -1;
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static gint hf_airopeek_channel = -1;
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static gint hf_airopeek_timestamp = -1;
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static gint ett_airopeek = -1;
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static dissector_handle_t ieee80211_handle;
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static void
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dissect_airopeek(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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tvbuff_t *next_tvb;
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proto_tree *airopeek_tree = NULL;
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proto_item *ti = NULL;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "AIROPEEK");
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col_clear(pinfo->cinfo, COL_INFO);
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if (tree) {
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ti = proto_tree_add_item(tree, proto_airopeek, tvb, 0, -1, FALSE);
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airopeek_tree = proto_item_add_subtree(ti, ett_airopeek);
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proto_tree_add_item(airopeek_tree, hf_airopeek_unknown1, tvb, 0, 2, FALSE);
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proto_tree_add_item(airopeek_tree, hf_airopeek_unknown2, tvb, 2, 2, FALSE);
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proto_tree_add_item(airopeek_tree, hf_airopeek_unknown3, tvb, 4, 2, FALSE);
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proto_tree_add_item(airopeek_tree, hf_airopeek_unknown4, tvb, 6, 5, FALSE);
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proto_tree_add_item(airopeek_tree, hf_airopeek_timestamp, tvb, 11, 4, FALSE);
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proto_tree_add_item(airopeek_tree, hf_airopeek_unknown5, tvb, 15, 2, FALSE);
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proto_tree_add_item(airopeek_tree, hf_airopeek_channel, tvb, 17, 1, FALSE);
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proto_tree_add_item(airopeek_tree, hf_airopeek_unknown6, tvb, 18, 2, FALSE);
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}
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next_tvb = tvb_new_subset_remaining(tvb, 20);
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pinfo->pseudo_header->ieee_802_11.fcs_len = 4;
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call_dissector(ieee80211_handle, next_tvb, pinfo, tree);
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}
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void
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proto_register_airopeek(void)
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{
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static hf_register_info hf[] = {
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{ &hf_airopeek_unknown1,
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{ "Unknown1", "airopeek.unknown1", FT_BYTES, BASE_NONE, NULL,
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0x0, NULL, HFILL }},
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{ &hf_airopeek_unknown2,
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{ "caplength1", "airopeek.unknown2", FT_UINT16, BASE_DEC, NULL,
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0x0, NULL, HFILL }},
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{ &hf_airopeek_unknown3,
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{ "caplength2", "airopeek.unknown3", FT_UINT16, BASE_DEC, NULL,
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0x0, NULL, HFILL }},
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{ &hf_airopeek_unknown4,
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{ "Unknown4", "airopeek.unknown4", FT_BYTES, BASE_NONE, NULL,
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0x0, NULL, HFILL }},
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{ &hf_airopeek_unknown5,
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{ "Unknown5", "airopeek.unknown5", FT_BYTES, BASE_NONE, NULL,
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0x0, NULL, HFILL }},
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{ &hf_airopeek_unknown6,
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{ "Unknown6", "airopeek.unknown6", FT_BYTES, BASE_NONE, NULL,
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0x0, NULL, HFILL }},
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{ &hf_airopeek_timestamp,
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{ "Timestamp?", "airopeek.timestamp", FT_UINT32, BASE_DEC, NULL,
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0x0, NULL, HFILL }},
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{ &hf_airopeek_channel,
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{ "Channel", "airopeek.channel", FT_UINT8, BASE_DEC, NULL,
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0x0, NULL, HFILL }},
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};
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static gint *ett[] = {
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&ett_airopeek,
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};
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proto_airopeek = proto_register_protocol(
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"Airopeek encapsulated IEEE 802.11", "AIROPEEK", "airopeek");
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proto_register_field_array(proto_airopeek, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_airopeek(void)
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{
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dissector_handle_t airopeek_handle;
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ieee80211_handle = find_dissector("wlan_datapad");
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airopeek_handle = create_dissector_handle(dissect_airopeek, proto_airopeek);
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dissector_add_uint("udp.port", 5000, airopeek_handle);
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}
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