/* 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(pinfo->pool, type, hci_h4_type_vals, "Unknown HCI packet type 0x%02x"));

    next_tvb = tvb_new_subset_remaining(tvb, 1);

    if (!dissector_try_uint_with_data(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:

 */