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wireshark/epan/dissectors/packet-bt3ds.c

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/* packet-bt3ds.c
* Routines for Bluetooth 3DS dissection
*
* Copyright 2013, Michal Labedzki for Tieto Corporation
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/expert.h>
#include "packet-btl2cap.h"
#include "packet-btsdp.h"
static int proto_bt3ds = -1;
static int hf_message_opcode = -1;
static int hf_association_notification = -1;
static int hf_user_request_for_battery_level_display = -1;
static int hf_reserved = -1;
static int hf_battery_level = -1;
static expert_field ei_message_opcode_reserved = EI_INIT;
static expert_field ei_reserved = EI_INIT;
static expert_field ei_battery_level_reserved = EI_INIT;
static expert_field ei_unexpected_data = EI_INIT;
static gint ett_bt3ds = -1;
static dissector_handle_t b3ds_handle;
static const value_string message_opcode_vals[] = {
{ 0x00, "3DG Connection Announcement" },
{ 0, NULL }
};
void proto_register_bt3ds(void);
void proto_reg_handoff_bt3ds(void);
static gint
dissect_bt3ds(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
proto_item *main_item;
proto_tree *main_tree;
proto_item *sub_item;
gint offset = 0;
guint8 value;
main_item = proto_tree_add_item(tree, proto_bt3ds, tvb, offset, -1, ENC_NA);
main_tree = proto_item_add_subtree(main_item, ett_bt3ds);
col_set_str(pinfo->cinfo, COL_PROTOCOL, "3DS");
switch (pinfo->p2p_dir) {
case P2P_DIR_SENT:
col_set_str(pinfo->cinfo, COL_INFO, "Sent ");
break;
case P2P_DIR_RECV:
col_set_str(pinfo->cinfo, COL_INFO, "Rcvd ");
break;
default:
col_set_str(pinfo->cinfo, COL_INFO, "UnknownDirection ");
break;
}
sub_item = proto_tree_add_item(main_tree, hf_message_opcode, tvb, offset, 1, ENC_BIG_ENDIAN);
value = tvb_get_guint8(tvb, offset);
if (value > 0)
expert_add_info(pinfo, sub_item, &ei_message_opcode_reserved);
offset += 1;
col_add_fstr(pinfo->cinfo, COL_INFO, "%s", val_to_str_const(value, message_opcode_vals, "Unknown"));
sub_item = proto_tree_add_item(main_tree, hf_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(main_tree, hf_user_request_for_battery_level_display, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(main_tree, hf_association_notification, tvb, offset, 1, ENC_BIG_ENDIAN);
value = tvb_get_guint8(tvb, offset) >> 2;
if (value != 0)
expert_add_info(pinfo, sub_item, &ei_reserved);
offset += 1;
sub_item = proto_tree_add_item(main_tree, hf_battery_level, tvb, offset, 1, ENC_BIG_ENDIAN);
value = tvb_get_guint8(tvb, offset);
if (value >= 101 && value <= 254)
expert_add_info(pinfo, sub_item, &ei_battery_level_reserved);
else if (value == 255)
proto_item_append_text(sub_item, "Battery Level Reporting Not Supported");
offset += 1;
if (tvb_reported_length_remaining(tvb, offset) > 0) {
proto_tree_add_expert(main_tree, pinfo, &ei_unexpected_data, tvb, offset, -1);
offset += tvb_reported_length_remaining(tvb, offset);
}
return offset;
}
void
proto_register_bt3ds(void)
{
module_t *module;
expert_module_t *expert_bt3ds;
static ei_register_info ei[] = {
{ &ei_message_opcode_reserved, { "bt3ds.expert.message_opcode.reserved", PI_PROTOCOL, PI_NOTE, "Value is reserved", EXPFILL }},
{ &ei_reserved, { "bt3ds.expert.reserved", PI_PROTOCOL, PI_NOTE, "Value is reserved", EXPFILL }},
{ &ei_battery_level_reserved, { "bt3ds.expert.battery_level.reserved", PI_PROTOCOL, PI_NOTE, "Value is reserved", EXPFILL }},
{ &ei_unexpected_data, { "bt3ds.expert.unexpected_data", PI_PROTOCOL, PI_WARN, "Unexpected data", EXPFILL }}
};
static hf_register_info hf[] = {
{ &hf_message_opcode,
{ "Message Opcode", "bt3ds.message_opcode",
FT_UINT8, BASE_HEX, VALS(message_opcode_vals), 0x00,
NULL, HFILL }
},
{ &hf_association_notification,
{ "Association Notification", "bt3ds.association_notification",
FT_BOOLEAN, 8, NULL, 0x01,
NULL, HFILL }
},
{ &hf_user_request_for_battery_level_display,
{ "User Request for Battery Level Display", "bt3ds.user_request_for_battery_level_display",
FT_BOOLEAN, 8, NULL, 0x02,
NULL, HFILL }
},
{ &hf_reserved,
{ "Reserved", "bt3ds.reserved",
FT_UINT8, BASE_HEX, NULL, 0xFC,
NULL, HFILL }
},
{ &hf_battery_level,
{ "Battery Level", "bt3ds.battery_level",
FT_UINT8, BASE_DEC, NULL, 0x00,
"0-100% of current charge level of battery", HFILL }
}
};
static gint *ett[] = {
&ett_bt3ds
};
proto_bt3ds = proto_register_protocol("Bluetooth 3DS Profile", "BT 3DS", "bt3ds");
b3ds_handle = register_dissector("bt3ds", dissect_bt3ds, proto_bt3ds);
proto_register_field_array(proto_bt3ds, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_bt3ds = expert_register_protocol(proto_bt3ds);
expert_register_field_array(expert_bt3ds, ei, array_length(ei));
module = prefs_register_protocol_subtree("Bluetooth", proto_bt3ds, NULL);
prefs_register_static_text_preference(module, "3ds.version",
"Bluetooth Profile 3DS version: 1.0",
"Version of profile supported by this dissector.");
}
void
proto_reg_handoff_bt3ds(void)
{
dissector_add_string("bluetooth.uuid", "1137", b3ds_handle);
dissector_add_string("bluetooth.uuid", "1138", b3ds_handle);
dissector_add_string("bluetooth.uuid", "1139", b3ds_handle);
dissector_add_uint("btl2cap.psm", BTL2CAP_PSM_3DS, b3ds_handle);
dissector_add_for_decode_as("btl2cap.cid", b3ds_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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