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/* packet-hci_h4.c
* Routines for the Bluetooth HCI H4 dissection
*
* Copyright 2002, Christoph Scholz <scholz@cs.uni-bonn.de>
* From: http://affix.sourceforge.net/archive/ethereal_affix-3.patch
*
* Refactored for wireshark checkin
* Ronnie Sahlberg 2006
*
* 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_h4;
static int hf_hci_h4_type;
static int hf_hci_h4_direction;
static int ett_hci_h4;
static dissector_handle_t hci_h4_handle;
static dissector_table_t hci_h4_table;
static const value_string hci_h4_type_vals[] = {
{HCI_H4_TYPE_CMD, "HCI Command"},
{HCI_H4_TYPE_ACL, "ACL Data"},
{HCI_H4_TYPE_SCO, "SCO Data"},
{HCI_H4_TYPE_EVT, "HCI Event"},
{HCI_H4_TYPE_ISO, "ISO Data"},
{0, NULL }
};
static const value_string hci_h4_direction_vals[] = {
{P2P_DIR_SENT, "Sent"},
{P2P_DIR_RECV, "Rcvd"},
{P2P_DIR_UNKNOWN, "Unspecified"},
{0, NULL}
};
void proto_register_hci_h4(void);
void proto_reg_handoff_hci_h4(void);
static int
dissect_hci_h4(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
uint8_t type;
tvbuff_t *next_tvb;
proto_item *main_item;
proto_tree *main_tree;
proto_item *sub_item;
bluetooth_data_t *bluetooth_data;
bluetooth_data = (bluetooth_data_t *) data;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI H4");
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;
case P2P_DIR_UNKNOWN:
break;
default:
col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown direction %d ",
pinfo->p2p_dir);
break;
}
type = tvb_get_uint8(tvb, 0);
main_item = proto_tree_add_item(tree, proto_hci_h4, tvb, 0, 1, ENC_NA);
main_tree = proto_item_add_subtree(main_item, ett_hci_h4);
sub_item = proto_tree_add_uint(main_tree, hf_hci_h4_direction, tvb, 0, 0, pinfo->p2p_dir);
proto_item_set_generated(sub_item);
proto_tree_add_item(main_tree, hf_hci_h4_type,
tvb, 0, 1, ENC_LITTLE_ENDIAN);
col_append_str(pinfo->cinfo, COL_INFO,
val_to_str(type, hci_h4_type_vals, "Unknown HCI packet type 0x%02x"));
next_tvb = tvb_new_subset_remaining(tvb, 1);
if (!dissector_try_uint_new(hci_h4_table, type, next_tvb, pinfo, tree, true, bluetooth_data)) {
call_data_dissector(next_tvb, pinfo, tree);
}
return 1;
}
void
proto_register_hci_h4(void)
{
static hf_register_info hf[] = {
{ &hf_hci_h4_type,
{ "HCI Packet Type", "hci_h4.type",
FT_UINT8, BASE_HEX, VALS(hci_h4_type_vals), 0x0,
NULL, HFILL }
},
{ &hf_hci_h4_direction,
{ "Direction", "hci_h4.direction",
FT_UINT8, BASE_HEX, VALS(hci_h4_direction_vals), 0x0,
"HCI Packet Direction Sent/Rcvd", HFILL }
}
};
static int *ett[] = {
&ett_hci_h4,
};
proto_hci_h4 = proto_register_protocol("Bluetooth HCI H4", "HCI_H4", "hci_h4");
hci_h4_handle = register_dissector("hci_h4", dissect_hci_h4, proto_hci_h4);
proto_register_field_array(proto_hci_h4, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
hci_h4_table = register_dissector_table("hci_h4.type",
"HCI H4 pdu type", proto_hci_h4, FT_UINT8, BASE_HEX);
}
void
proto_reg_handoff_hci_h4(void)
{
dissector_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_H4, hci_h4_handle);
dissector_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR, hci_h4_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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