/* 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->pool, pinfo->p2p_dir,

                              hci_h1_direction_vals, "Unknown: %d"),

                           val_to_str(pinfo->pool, type,

                              hci_h1_type_vals,

                              "Unknown 0x%02x"));

        else

            proto_item_append_text(hci_h1_tree, " %s",

                           val_to_str(pinfo->pool, 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->pool, pinfo->p2p_dir,

                    hci_h1_direction_vals, "Unknown: %d"),

                     val_to_str(pinfo->pool, type, hci_h1_type_vals,

                    "Unknown 0x%02x"));

    else

        col_add_str(pinfo->cinfo, COL_INFO,

                 val_to_str(pinfo->pool, 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_with_data(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:

 */