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/* packet-hci_h1.c
* Routines for the Bluetooth HCI H1 dissection
*
* 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 <wiretap/wtap.h>
#include "packet-bluetooth.h"
static int proto_hci_h1;
static int hf_hci_h1_direction;
static int ett_hci_h1;
static dissector_table_t hci_h1_table;
static dissector_handle_t hci_h1_handle;
static const value_string hci_h1_type_vals[] = {
{BTHCI_CHANNEL_COMMAND, "HCI Command"},
{BTHCI_CHANNEL_ACL, "ACL Data"},
{BTHCI_CHANNEL_SCO, "SCO Data"},
{BTHCI_CHANNEL_EVENT, "HCI Event"},
{BTHCI_CHANNEL_ISO, "ISO Data"},
{0, NULL }
};
static const value_string hci_h1_direction_vals[] = {
{-1, "Unknown"},
{0, "Sent"},
{1, "Rcvd"},
{0, NULL}
};
void proto_register_hci_h1(void);
void proto_reg_handoff_hci_h1(void);
static int
dissect_hci_h1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
uint8_t type;
tvbuff_t *next_tvb;
proto_item *ti = NULL;
proto_tree *hci_h1_tree = NULL;
bluetooth_data_t *bluetooth_data;
bluetooth_data = (bluetooth_data_t *) data;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI");
col_clear(pinfo->cinfo, COL_INFO);
DISSECTOR_ASSERT(bluetooth_data->previous_protocol_data_type == BT_PD_BTHCI);
type = bluetooth_data->previous_protocol_data.bthci->channel;
if (tree) {
ti = proto_tree_add_item(tree, proto_hci_h1, tvb, 0, 0, ENC_NA);
hci_h1_tree = proto_item_add_subtree(ti, ett_hci_h1);
if(pinfo->p2p_dir == P2P_DIR_SENT ||
pinfo->p2p_dir == P2P_DIR_RECV)
proto_item_append_text(hci_h1_tree, " %s %s",
val_to_str(pinfo->p2p_dir,
hci_h1_direction_vals, "Unknown: %d"),
val_to_str(type,
hci_h1_type_vals,
"Unknown 0x%02x"));
else
proto_item_append_text(hci_h1_tree, " %s",
val_to_str(type,
hci_h1_type_vals,
"Unknown 0x%02x"));
}
if(pinfo->p2p_dir == P2P_DIR_SENT ||
pinfo->p2p_dir == P2P_DIR_RECV)
col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s",
val_to_str(pinfo->p2p_dir,
hci_h1_direction_vals, "Unknown: %d"),
val_to_str(type, hci_h1_type_vals,
"Unknown 0x%02x"));
else
col_add_str(pinfo->cinfo, COL_INFO,
val_to_str(type, hci_h1_type_vals,
"Unknown 0x%02x"));
ti = proto_tree_add_int(hci_h1_tree, hf_hci_h1_direction, tvb, 0, 0, pinfo->p2p_dir);
proto_item_set_generated(ti);
next_tvb = tvb_new_subset_remaining(tvb, 0);
if (!dissector_try_uint_new(hci_h1_table, type, next_tvb, pinfo, tree, true, bluetooth_data)) {
call_data_dissector(next_tvb, pinfo, tree);
}
return tvb_reported_length(tvb);
}
void
proto_register_hci_h1(void)
{
static hf_register_info hf[] = {
{ &hf_hci_h1_direction,
{ "Direction", "hci_h1.direction",
FT_INT8, BASE_DEC, VALS(hci_h1_direction_vals), 0x0,
"HCI Packet Direction Sent/Rcvd/Unknown", HFILL }
}
};
static int *ett[] = {
&ett_hci_h1,
};
proto_hci_h1 = proto_register_protocol("Bluetooth HCI H1",
"HCI_H1", "hci_h1");
hci_h1_handle = register_dissector("hci_h1", dissect_hci_h1, proto_hci_h1);
proto_register_field_array(proto_hci_h1, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
hci_h1_table = register_dissector_table("hci_h1.type",
"HCI h1 pdu type", proto_hci_h1, FT_UINT8, BASE_HEX);
}
void
proto_reg_handoff_hci_h1(void)
{
dissector_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_HCI, hci_h1_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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