126 lines
3.6 KiB
C
126 lines
3.6 KiB
C
/* packet-airopeek.c
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* Routines for AiroPeek capture file dissection
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*
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* $Id: packet-airopeek.c,v 1.1 2002/01/29 09:45:55 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* Copied from README.developer
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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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.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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#include "packet-ieee80211.h"
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/* protocol */
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static int proto_airopeek = -1;
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/* header fields */
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static int hf_airopeek_data_rate = -1;
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static int hf_airopeek_channel = -1;
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static int hf_airopeek_signal_strength = -1;
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static gint ett_airopeek = -1;
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static dissector_handle_t ieee80211_fixed_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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proto_tree *airopeek_tree;
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proto_item *ti;
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guint8 data_rate;
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guint8 signal_strength;
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tvbuff_t *next_tvb;
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "AiroPeek");
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if (check_col(pinfo->cinfo, COL_INFO))
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col_clear(pinfo->cinfo, COL_INFO);
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if (tree) {
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ti = proto_tree_add_protocol_format(tree, proto_airopeek,
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tvb, 0, 3, "AiroPeek Radio Information");
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airopeek_tree = proto_item_add_subtree(ti, ett_airopeek);
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data_rate = tvb_get_guint8(tvb, 0);
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proto_tree_add_uint_format(airopeek_tree, hf_airopeek_data_rate,
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tvb, 0, 1, data_rate,
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"Data Rate: %g kb/s", .5*data_rate);
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proto_tree_add_item(airopeek_tree, hf_airopeek_channel,
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tvb, 1, 1, FALSE);
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signal_strength = tvb_get_guint8(tvb, 2);
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proto_tree_add_uint_format(airopeek_tree, hf_airopeek_data_rate,
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tvb, 2, 1, data_rate,
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"Signal Strength: %u%%", signal_strength);
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}
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/* dissect the 802.11 header next */
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next_tvb = tvb_new_subset(tvb, 4, -1, -1);
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call_dissector(ieee80211_fixed_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_data_rate,
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{ "Data Rate", "airopeek.data_rate", FT_UINT8, BASE_DEC, NULL,
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0x0, "", 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, "", HFILL}},
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{ &hf_airopeek_signal_strength,
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{ "Signal Strength", "airopeek.signal_strength", FT_UINT8, BASE_DEC, NULL,
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0x0, "", 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("AiroPeek radio information",
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"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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/* handle for 802.11 dissector for fixed-length 802.11 headers */
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ieee80211_fixed_handle = find_dissector("wlan_fixed");
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airopeek_handle = create_dissector_handle(dissect_airopeek,
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proto_airopeek);
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dissector_add("wtap_encap", WTAP_ENCAP_AIROPEEK, airopeek_handle);
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}
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