/* packet-hci_mon.c

 * Routines for Bluetooth Linux Monitor 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 <wiretap/wtap.h>

#include "packet-bluetooth.h"

static int proto_hci_mon;

static int hf_adapter_id;

static int hf_opcode;

static int hf_type;

static int hf_bus;

static int hf_bd_addr;

static int hf_name;

static int hf_manufacturer;

static int hf_system_note;

static int hf_priority;

static int hf_ident_length;

static int hf_ident;

static int hf_message;

static int hf_cookie;

static int hf_format;

static int hf_version;

static int hf_revision;

static int hf_flags;

static int hf_flags_trusted_socket;

static int hf_command_length;

static int hf_command;

static int hf_event;

static int ett_hci_mon;

static int ett_flags;

static expert_field ei_unknown_data;

static wmem_tree_t *adapter_to_disconnect_in_frame;

static dissector_handle_t hci_mon_handle;

static dissector_handle_t bthci_cmd_handle;

static dissector_handle_t bthci_evt_handle;

static dissector_handle_t bthci_acl_handle;

static dissector_handle_t bthci_sco_handle;

static dissector_handle_t bthci_iso_handle;

#define OPCODE_NEW_INDEX         0

#define OPCODE_DELETE_INDEX      1

#define OPCODE_HCI_COMMAND_PKT   2

#define OPCODE_HCI_EVENT_PKT     3

#define OPCODE_ACL_TX_PACKET     4

#define OPCODE_ACL_RX_PACKET     5

#define OPCODE_SCO_TX_PACKET     6

#define OPCODE_SCO_RX_PACKET     7

#define OPCODE_OPEN_INDEX        8

#define OPCODE_CLOSE_INDEX       9

#define OPCODE_INDEX_INFO        10

#define OPCODE_VENDOR_DIAGNOSTIC 11

#define OPCODE_SYSTEM_NOTE       12

#define OPCODE_USER_LOGGING      13

#define OPCODE_CONTROL_OPEN      14

#define OPCODE_CONTROL_CLOSE     15

#define OPCODE_CONTROL_COMMAND   16

#define OPCODE_CONTROL_EVENT     17

#define OPCODE_ISO_TX_PACKET     18

#define OPCODE_ISO_RX_PACKET     19

static const value_string opcode_vals[] = {

    { OPCODE_NEW_INDEX,         "New Index" },

    { OPCODE_DELETE_INDEX,      "Delete Index" },

    { OPCODE_HCI_COMMAND_PKT,   "HCI Command Packet" },

    { OPCODE_HCI_EVENT_PKT,     "HCI Event Packet" },

    { OPCODE_ACL_TX_PACKET,     "ACL Tx Packet" },

    { OPCODE_ACL_RX_PACKET,     "ACL Rx Packet" },

    { OPCODE_SCO_TX_PACKET,     "SCO Tx Packet" },

    { OPCODE_SCO_RX_PACKET,     "SCO Rx Packet" },

    { OPCODE_OPEN_INDEX,        "Open Index" },

    { OPCODE_CLOSE_INDEX,       "Close Index" },

    { OPCODE_INDEX_INFO,        "Index Info" },

    { OPCODE_VENDOR_DIAGNOSTIC, "Vendor Diagnostic" },

    { OPCODE_SYSTEM_NOTE,       "System Note" },

    { OPCODE_USER_LOGGING,      "User Logging" },

    { OPCODE_CONTROL_OPEN,      "Control Open" },

    { OPCODE_CONTROL_CLOSE,     "Control Close" },

    { OPCODE_CONTROL_COMMAND,   "Control Command" },

    { OPCODE_CONTROL_EVENT,     "Control Event" },

    { OPCODE_ISO_TX_PACKET,     "ISO Tx Packet" },

    { OPCODE_ISO_RX_PACKET,     "ISO Rx Packet" },

    { 0, NULL }

};

value_string_ext(hci_mon_opcode_vals_ext) = VALUE_STRING_EXT_INIT(opcode_vals);

static const value_string type_vals[] = {

    { 0x00,  "Virtual" },

    { 0x01,  "USB" },

    { 0x02,  "PC Card" },

    { 0x03,  "UART" },

    { 0x04,  "RS232" },

    { 0x05,  "PCI" },

    { 0x06,  "SDIO" },

    { 0x00, NULL }

};

static value_string_ext(type_vals_ext) = VALUE_STRING_EXT_INIT(type_vals);

static const value_string bus_vals[] = {

    { 0x00,  "BR/EDR" },

    { 0x01,  "AMP" },

    { 0x00, NULL }

};

static value_string_ext(bus_vals_ext) = VALUE_STRING_EXT_INIT(bus_vals);

#define CTRL_OPEN_RAW     0x0000

#define CTRL_OPEN_USER    0x0001

#define CTRL_OPEN_CONTROL 0x0002

static const value_string format_vals[] = {

    { CTRL_OPEN_RAW,     "Rqw" },

    { CTRL_OPEN_USER,    "User" },

    { CTRL_OPEN_CONTROL, "Control" },

    { 0x00, NULL }

};

static value_string_ext(format_vals_ext) = VALUE_STRING_EXT_INIT(format_vals);

static const value_string priority_vals[] = {

    { 0, "EMERG" },

    { 1, "ALERT" },

    { 2, "CRIT" },

    { 3, "ERR" },

    { 4, "WARNING" },

    { 5, "NOTICE" },

    { 6, "INFO" },

    { 7, "DEBUG" },

    { 0, NULL }

};

static value_string_ext(priority_vals_ext) = VALUE_STRING_EXT_INIT(priority_vals);

#define EVENT_COMMAND_COMPLETE               0x0001

#define EVENT_COMMAND_STATUS                 0x0002

#define EVENT_CONTROLLER_ERROR               0x0003

#define EVENT_INDEX_ADDED                    0x0004

#define EVENT_INDEX_REMOVED                  0x0005

#define EVENT_NEW_SETTINGS                   0x0006

#define EVENT_CLASS_OF_DEVICE_CHANGED        0x0007

#define EVENT_LOCAL_NAME_CHANGED             0x0008

#define EVENT_NEW_LINK_KEY                   0x0009

#define EVENT_NEW_LONG_TERM_KEY              0x000a

#define EVENT_DEVICE_CONNECTED               0x000b

#define EVENT_DEVICE_DISCONNECTED            0x000c

#define EVENT_CONNECT_FAILED                 0x000d

#define EVENT_PIN_CODE_REQUEST               0x000e

#define EVENT_USER_CONFIRMATION_REQUEST      0x000f

#define EVENT_USER_PASSKEY_REQUEST           0x0010

#define EVENT_AUTHENTICATION_FAILED          0x0011

#define EVENT_DEVICE_FOUND                   0x0012

#define EVENT_DISCOVERING                    0x0013

#define EVENT_DEVICE_BLOCKED                 0x0014

#define EVENT_DEVICE_UNBLOCKED               0x0015

#define EVENT_DEVICE_UNPAIRED                0x0016

#define EVENT_PASSKEY_NOTIFY                 0x0017

#define EVENT_NEW_IRK                        0x0018

#define EVENT_NEW_CSRK                       0x0019

#define EVENT_DEVICE_ADDED                   0x001a

#define EVENT_DEVICE_REMOVED                 0x001b

#define EVENT_NEW_CONNECTION_PARAMETER       0x001c

#define EVENT_UNCONFIGURED_INDEX_ADDED       0x001d

#define EVENT_UNCONFIGURED_INDEX_REMOVED     0x001e

#define EVENT_NEW_CONFIGURATION_OPTIONS      0x001f

#define EVENT_EXTENDED_INDEX_ADDED           0x0020

#define EVENT_EXTENDED_INDEX_REMOVED         0x0021

#define EVENT_LOCAL_OUT_OF_BAND_DATA_UPDATED 0x0022

#define EVENT_ADVERTISING_ADDED              0x0023

#define EVENT_ADVERTISING_REMOVED            0x0024

#define EVENT_EXTENDED_INFO_CHANGED          0x0025

#define EVENT_PHY_CONFIGURATION_CHANGED      0x0026

static const value_string event_vals[] = {

    { EVENT_COMMAND_COMPLETE,               "Command complete" },

    { EVENT_COMMAND_STATUS,                 "Command status" },

    { EVENT_CONTROLLER_ERROR,               "Controller error" },

    { EVENT_INDEX_ADDED,                    "Index added" },

    { EVENT_INDEX_REMOVED,                  "Index removed" },

    { EVENT_NEW_SETTINGS,                   "New settings" },

    { EVENT_CLASS_OF_DEVICE_CHANGED,        "Class of device changed" },

    { EVENT_LOCAL_NAME_CHANGED,             "Local name changed" },

    { EVENT_NEW_LINK_KEY,                   "New link key" },

    { EVENT_NEW_LONG_TERM_KEY,              "New long-term key" },

    { EVENT_DEVICE_CONNECTED,               "Device connected" },

    { EVENT_DEVICE_DISCONNECTED,            "Device disconnected" },

    { EVENT_CONNECT_FAILED,                 "Connect failed" },

    { EVENT_PIN_CODE_REQUEST,               "PIN code request" },

    { EVENT_USER_CONFIRMATION_REQUEST,      "User confirmation request" },

    { EVENT_USER_PASSKEY_REQUEST,           "User passkey request" },

    { EVENT_AUTHENTICATION_FAILED,          "Authentication failed" },

    { EVENT_DEVICE_FOUND,                   "Device found" },

    { EVENT_DISCOVERING,                    "Discovering" },

    { EVENT_DEVICE_BLOCKED,                 "Device blocked" },

    { EVENT_DEVICE_UNBLOCKED,               "Device unblocked" },

    { EVENT_DEVICE_UNPAIRED,                "Device unpaired" },

    { EVENT_PASSKEY_NOTIFY,                 "Passkey notify" },

    { EVENT_NEW_IRK,                        "New IRK" },

    { EVENT_NEW_CSRK,                       "New CSRK" },

    { EVENT_DEVICE_ADDED,                   "Device added" },

    { EVENT_DEVICE_REMOVED,                 "Device removed" },

    { EVENT_NEW_CONNECTION_PARAMETER,       "New connection parameter" },

    { EVENT_UNCONFIGURED_INDEX_ADDED,       "Unconfigured index added" },

    { EVENT_UNCONFIGURED_INDEX_REMOVED,     "Unconfigured index removed" },

    { EVENT_NEW_CONFIGURATION_OPTIONS,      "New configuration options" },

    { EVENT_EXTENDED_INDEX_ADDED,           "Extended index added" },

    { EVENT_EXTENDED_INDEX_REMOVED,         "Extended index removed" },

    { EVENT_LOCAL_OUT_OF_BAND_DATA_UPDATED, "Local out-of-band data updated" },

    { EVENT_ADVERTISING_ADDED,              "Advertising added" },

    { EVENT_ADVERTISING_REMOVED,            "Advertising removed" },

    { EVENT_EXTENDED_INFO_CHANGED,          "Extended info changed" },

    { EVENT_PHY_CONFIGURATION_CHANGED,      "PHY configuration changed" },

    { 0x00, NULL }

};

static value_string_ext(event_vals_ext) = VALUE_STRING_EXT_INIT(event_vals);

void proto_register_hci_mon(void);

void proto_reg_handoff_hci_mon(void);

static int

dissect_hci_mon(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)

{

    proto_tree       *hci_mon_item;

    proto_item       *hci_mon_tree;

    proto_item       *sub_item;

    int               offset = 0;

    uint16_t          opcode;

    uint16_t          adapter_id;

    bluetooth_data_t *bluetooth_data;

    tvbuff_t         *next_tvb;

    uint32_t         *adapter_disconnect_in_frame;

    wmem_tree_t      *subtree;

    wmem_tree_key_t  key[4];

    uint32_t         k_interface_id;

    uint32_t         k_adapter_id;

    uint32_t         k_frame_number;

    uint32_t         ident_length;

    uint32_t         command_length;

    static int * const flags_fields[] = {

        &hf_flags_trusted_socket,

        NULL

    };

    bluetooth_data = (bluetooth_data_t *) data;

    /*

     * XXX - the raw data sent to a Bluetooth monitor socket has a 6-byte

     * header, the last 2 bytes of which are a big-endian length field,

     * giving the length of the payload.

     *

     * Somehow, the length field disappears.

     */

    DISSECTOR_ASSERT(bluetooth_data->previous_protocol_data_type == BT_PD_BTMON);

    adapter_id = bluetooth_data->previous_protocol_data.btmon->adapter_id;

    opcode = bluetooth_data->previous_protocol_data.btmon->opcode;

    if (opcode == 0x00 || opcode == 0x01)

        pinfo->p2p_dir = P2P_DIR_RECV;

    else if (opcode % 2)

        pinfo->p2p_dir = P2P_DIR_RECV;

    else

        pinfo->p2p_dir = P2P_DIR_SENT;

    hci_mon_item = proto_tree_add_item(tree, proto_hci_mon, tvb, offset, -1, ENC_NA);

    hci_mon_tree = proto_item_add_subtree(hci_mon_item, ett_hci_mon);

    col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI_MON");

    if (opcode == 0x00 || opcode == 0x01)

        col_set_str(pinfo->cinfo, COL_INFO, "Info ");

    else 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_uint(hci_mon_tree, hf_adapter_id,  tvb, offset, 0, adapter_id);

    proto_item_set_generated(sub_item);

    sub_item = proto_tree_add_uint(hci_mon_tree, hf_opcode, tvb, offset, 0, opcode);

    proto_item_set_generated(sub_item);

    col_append_fstr(pinfo->cinfo, COL_INFO, "Adapter Id: %u, Opcode: %s",

            adapter_id, val_to_str_ext(pinfo->pool, opcode, &hci_mon_opcode_vals_ext, "Unknown (%u)"));

    bluetooth_data->adapter_id = adapter_id;

    k_interface_id = bluetooth_data->interface_id;

    k_adapter_id   = adapter_id;

    k_frame_number = pinfo->num;

    key[0].length = 1;

    key[0].key    = &k_interface_id;

    key[1].length = 1;

    key[1].key    = &k_adapter_id;

    if (!pinfo->fd->visited && opcode == 0x01) { /* Delete Index */

        uint32_t          *disconnect_in_frame;

        key[2].length = 1;

        key[2].key    = &k_frame_number;

        key[3].length = 0;

        key[3].key    = NULL;

        disconnect_in_frame = wmem_new(wmem_file_scope(), uint32_t);

        if (disconnect_in_frame) {

            *disconnect_in_frame = pinfo->num;

            wmem_tree_insert32_array(adapter_to_disconnect_in_frame, key, disconnect_in_frame);

        }

    }

    key[2].length = 0;

    key[2].key    = NULL;

    subtree = (wmem_tree_t *) wmem_tree_lookup32_array(adapter_to_disconnect_in_frame, key);

    adapter_disconnect_in_frame = (subtree) ? (uint32_t *) wmem_tree_lookup32_le(subtree, k_frame_number) : NULL;

    if (adapter_disconnect_in_frame) {

        bluetooth_data->adapter_disconnect_in_frame = adapter_disconnect_in_frame;

    } else {

        bluetooth_data->adapter_disconnect_in_frame = &bluetooth_max_disconnect_in_frame;

    }

    pinfo->ptype = PT_BLUETOOTH;

    next_tvb = tvb_new_subset_remaining(tvb, offset);

    switch(opcode) {

    case OPCODE_NEW_INDEX:

        proto_tree_add_item(hci_mon_tree, hf_bus, tvb, offset, 1, ENC_BIG_ENDIAN);

        offset += 1;

        proto_tree_add_item(hci_mon_tree, hf_type, tvb, offset, 1, ENC_BIG_ENDIAN);

        offset += 1;

        offset = dissect_bd_addr(hf_bd_addr, pinfo, hci_mon_tree, tvb, offset, true, bluetooth_data->interface_id, bluetooth_data->adapter_id, NULL);

        proto_tree_add_item(hci_mon_tree, hf_name, tvb, offset, 8, ENC_ASCII);

        offset += 8;

        break;

    case OPCODE_DELETE_INDEX:

        /* No parameters */

        break;

    case OPCODE_HCI_COMMAND_PKT:

        call_dissector_with_data(bthci_cmd_handle, next_tvb, pinfo, tree, bluetooth_data);

        offset = tvb_reported_length(tvb);

        break;

   case OPCODE_HCI_EVENT_PKT:

        call_dissector_with_data(bthci_evt_handle, next_tvb, pinfo, tree, bluetooth_data);

        offset = tvb_reported_length(tvb);

        break;

   case OPCODE_ACL_TX_PACKET:

   case OPCODE_ACL_RX_PACKET:

        call_dissector_with_data(bthci_acl_handle, next_tvb, pinfo, tree, bluetooth_data);

        offset = tvb_reported_length(tvb);

        break;

   case OPCODE_SCO_TX_PACKET:

   case OPCODE_SCO_RX_PACKET:

        call_dissector_with_data(bthci_sco_handle, next_tvb, pinfo, tree, bluetooth_data);

        offset = tvb_reported_length(tvb);

        break;

    case OPCODE_OPEN_INDEX:

        /* No parameters */

        break;

    case OPCODE_CLOSE_INDEX:

        /* No parameters */

        break;

    case OPCODE_INDEX_INFO:

        offset = dissect_bd_addr(hf_bd_addr, pinfo, hci_mon_tree, tvb, offset, true, bluetooth_data->interface_id, bluetooth_data->adapter_id, NULL);

        proto_tree_add_item(hci_mon_tree, hf_manufacturer, tvb, offset, 2, ENC_LITTLE_ENDIAN);

        offset += 2;

        break;

    case OPCODE_VENDOR_DIAGNOSTIC:

        /* XXX - what are the parameters, if any? */

        break;

    case OPCODE_SYSTEM_NOTE:

        /*

         * XXX - NUL-terminated, so that you always have a NUL at the

         * end of the message?

         *

         * Or is it data from userland, which might or might not be

         * NUL-terminated?

         *

         * We make it FT_STRINGZPAD, just in case.

         */

        proto_tree_add_item(hci_mon_tree, hf_system_note, tvb, offset, tvb_reported_length_remaining(tvb, offset), ENC_NA | ENC_ASCII);

        offset = tvb_reported_length(tvb);

        break;

    case OPCODE_USER_LOGGING:

        proto_tree_add_item(hci_mon_tree, hf_priority, tvb, offset, 1, ENC_NA);

        offset += 1;

        proto_tree_add_item_ret_uint(hci_mon_tree, hf_ident_length, tvb, offset, 1, ENC_NA, &ident_length);

        offset += 1;

        proto_tree_add_item(hci_mon_tree, hf_ident, tvb, offset, ident_length, ENC_ASCII);

        offset += ident_length;

        proto_tree_add_item(hci_mon_tree, hf_message, tvb, offset, tvb_reported_length_remaining(tvb, offset), ENC_ASCII);

        offset = tvb_reported_length(tvb);

        break;

    case OPCODE_CONTROL_OPEN:

        proto_tree_add_item(hci_mon_tree, hf_cookie, tvb, offset, 4, ENC_LITTLE_ENDIAN);

        offset += 4;

        proto_tree_add_item(hci_mon_tree, hf_format, tvb, offset, 2, ENC_LITTLE_ENDIAN);

        offset += 2;

        proto_tree_add_item(hci_mon_tree, hf_version, tvb, offset, 1, ENC_NA);

        proto_tree_add_item(hci_mon_tree, hf_revision, tvb, offset + 1, 2, ENC_LITTLE_ENDIAN);

        offset += 3;

        proto_tree_add_bitmask(hci_mon_tree, tvb, offset, hf_flags, ett_flags,

                               flags_fields, ENC_LITTLE_ENDIAN);

        offset += 4;

        proto_tree_add_item_ret_uint(hci_mon_tree, hf_command_length, tvb, offset, 1, ENC_NA, &command_length);

        offset += 1;

        /*

         * XXX - null-padded?  We assume so; the Linux kernel code, as of

         * the 5.3 kernel, always copies TASK_COMM_LEN bytes and sets the

         * command length to TASK_COMM_LEN.

         */

        proto_tree_add_item(hci_mon_tree, hf_command, tvb, offset, command_length, ENC_NA | ENC_ASCII);

        offset += command_length;

        break;

    case OPCODE_CONTROL_CLOSE:

        proto_tree_add_item(hci_mon_tree, hf_cookie, tvb, offset, 4, ENC_LITTLE_ENDIAN);

        offset += 4;

        break;

    case OPCODE_CONTROL_COMMAND:

        proto_tree_add_item(hci_mon_tree, hf_cookie, tvb, offset, 4, ENC_LITTLE_ENDIAN);

        offset += 4;

        /* XXX - different field for this opcode? */

        proto_tree_add_item(hci_mon_tree, hf_opcode, tvb, offset, 2, ENC_LITTLE_ENDIAN);

        offset += 2;

        break;

    case OPCODE_CONTROL_EVENT:

        proto_tree_add_item(hci_mon_tree, hf_cookie, tvb, offset, 4, ENC_LITTLE_ENDIAN);

        offset += 4;

        proto_tree_add_item(hci_mon_tree, hf_event, tvb, offset, 2, ENC_LITTLE_ENDIAN);

        offset += 2;

        /* XXX - dissect the payload of the event */

        break;

    case OPCODE_ISO_TX_PACKET:

    case OPCODE_ISO_RX_PACKET:

        call_dissector_with_data(bthci_iso_handle, next_tvb, pinfo, tree, bluetooth_data);

        offset = tvb_reported_length(tvb);

        break;

    }

    if (tvb_reported_length_remaining(tvb, offset) > 0) {

        proto_tree_add_expert(hci_mon_tree, pinfo, &ei_unknown_data, tvb, offset, tvb_reported_length_remaining(tvb, offset));

        offset = tvb_reported_length(tvb);

    }

   /* NOTE: Oops... HCI_MON have special packet with length 0, but there is a pseudo-header with certain infos,

            mark it as dissected */

    if (opcode == 0x01)

        return 1;

    return offset;

}

void

proto_register_hci_mon(void)

{

    module_t *module;

    expert_module_t  *expert_module;

    static hf_register_info hf[] = {

        {  &hf_adapter_id,

            { "Adapter ID",                      "hci_mon.adapter_id",

            FT_UINT16, BASE_DEC, NULL, 0x00,

            NULL, HFILL }

        },

        {  &hf_opcode,

            { "Opcode",                          "hci_mon.opcode",

            FT_UINT16, BASE_DEC | BASE_EXT_STRING, &hci_mon_opcode_vals_ext, 0x00,

            NULL, HFILL }

        },

        {  &hf_type,

            { "Type",                            "hci_mon.type",

            FT_UINT8, BASE_HEX | BASE_EXT_STRING, &type_vals_ext, 0x00,

            NULL, HFILL }

        },

        {  &hf_bus,

            { "Bus",                             "hci_mon.bus",

            FT_UINT8, BASE_HEX | BASE_EXT_STRING, &bus_vals_ext, 0x00,

            NULL, HFILL }

        },

        { &hf_bd_addr,

          { "BD_ADDR",                           "hci_mon.bd_addr",

            FT_ETHER, BASE_NONE, NULL, 0x0,

            NULL, HFILL}

        },

        { &hf_name,

          { "Adapter Name",                      "hci_mon.adapter_name",

            FT_STRING, BASE_NONE, NULL, 0x0,

            NULL, HFILL}

        },

        {  &hf_manufacturer,

            { "Manufacturer",                    "hci_mon.manufacturer",

            FT_UINT16, BASE_HEX, NULL, 0x0,

            NULL, HFILL }

        },

        { &hf_system_note,

          { "System Note",                       "hci_mon.system_note",

            FT_STRINGZPAD, BASE_NONE, NULL, 0x0,

            NULL, HFILL}

        },

        { &hf_priority,

          { "Priority",                          "hci_mon.priority",

            FT_UINT8, BASE_DEC | BASE_EXT_STRING, &priority_vals_ext, 0x0,

            NULL, HFILL}

        },

        { &hf_ident_length,

          { "Ident Length",                      "hci_mon.ident_length",

            FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL}

        },

        { &hf_ident,

          { "Ident",                             "hci_mon.ident",

            FT_STRING, BASE_NONE, NULL, 0x0,

            NULL, HFILL}

        },

        { &hf_message,

          { "Message",                           "hci_mon.message",

            FT_STRING, BASE_NONE, NULL, 0x0,

            NULL, HFILL}

        },

        { &hf_cookie,

          { "Cookie",                            "hci_mon.cookie",

            FT_UINT32, BASE_HEX, NULL, 0x0,

            NULL, HFILL}

        },

        { &hf_format,

          { "Format",                            "hci_mon.format",

            FT_UINT16, BASE_HEX | BASE_EXT_STRING, &format_vals_ext, 0x00,

            NULL, HFILL}

        },

        { &hf_version,

          { "Version",                           "hci_mon.version",

            FT_UINT8, BASE_DEC, NULL, 0x00,

            NULL, HFILL}

        },

        { &hf_revision,

          { "Revision",                          "hci_mon.version_minor",

            FT_UINT16, BASE_DEC, NULL, 0x00,

            NULL, HFILL}

        },

        { &hf_flags,

          { "Flags",                             "hci_mon.flags",

            FT_UINT32, BASE_HEX, NULL, 0x0,

            NULL, HFILL}

        },

        { &hf_flags_trusted_socket,

          { "Trusted Socket",                    "hci_mon.flags.trusted_socket",

            FT_BOOLEAN, 32, NULL, 0x00000001,

            NULL, HFILL}

        },

        { &hf_command_length,

          { "Command Length",                    "hci_mon.command_length",

            FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL}

        },

        { &hf_command,

          { "Command",                           "hci_mon.command",

            FT_STRINGZPAD, BASE_NONE, NULL, 0x0,

            NULL, HFILL}

        },

        { &hf_event,

          { "Event",                            "hci_mon.event",

            FT_UINT16, BASE_HEX | BASE_EXT_STRING, &event_vals_ext, 0x0,

            NULL, HFILL}

        }

    };

    static ei_register_info ei[] = {

        { &ei_unknown_data, { "hci_mon.unknown_data", PI_PROTOCOL, PI_WARN, "Unknown data", EXPFILL }},

    };

    static int *ett[] = {

        &ett_hci_mon,

        &ett_flags

    };

    proto_hci_mon = proto_register_protocol("Bluetooth Linux Monitor Transport", "HCI_MON", "hci_mon");

    proto_register_field_array(proto_hci_mon, hf, array_length(hf));

    proto_register_subtree_array(ett, array_length(ett));

    hci_mon_handle = register_dissector("hci_mon", dissect_hci_mon, proto_hci_mon);

    expert_module = expert_register_protocol(proto_hci_mon);

    expert_register_field_array(expert_module, ei, array_length(ei));

    adapter_to_disconnect_in_frame = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());

    module = prefs_register_protocol_subtree("Bluetooth", proto_hci_mon, NULL);

    prefs_register_static_text_preference(module, "bthci_mon.version",

            "Bluetooth Linux Monitor Transport introduced in BlueZ 5.x",

            "Version of protocol supported by this dissector.");

}

void

proto_reg_handoff_hci_mon(void)

{

    bthci_cmd_handle = find_dissector_add_dependency("bthci_cmd", proto_hci_mon);

    bthci_evt_handle = find_dissector_add_dependency("bthci_evt", proto_hci_mon);

    bthci_acl_handle = find_dissector_add_dependency("bthci_acl", proto_hci_mon);

    bthci_sco_handle = find_dissector_add_dependency("bthci_sco", proto_hci_mon);

    bthci_iso_handle = find_dissector_add_dependency("bthci_iso", proto_hci_mon);

    dissector_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_LINUX_MONITOR, hci_mon_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:

 */