/* packet-ppi-sensor.c

 * Routines for PPI-GEOLOCATION-SENSOR dissection

 * Copyright 2010, Harris Corp, jellch@harris.com

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

 * Copied from packet-ppi-antenna.c

 *

 * SPDX-License-Identifier: GPL-2.0-or-later

 */

#include "config.h"

#include <epan/packet.h>

#include <epan/expert.h>

#include "packet-ppi-geolocation-common.h"

enum ppi_sensor_type {

    PPI_SENSOR_SENSORTYPE   = 0, /* Velocity, Acceleration, etc */

    PPI_SENSOR_SCALEFACTOR  = 1, /* 10^scalefactor applied to all values */

    PPI_SENSOR_VAL_X        = 2, /* X-dimension reading */

    PPI_SENSOR_VAL_Y        = 3, /* Y-dimension reading */

    PPI_SENSOR_VAL_Z        = 4, /* Z-dimension reading */

    PPI_SENSOR_VAL_T        = 5, /* Total reading */

    PPI_SENSOR_VAL_E        = 6, /* Error reading */

    PPI_SENSOR_DESCSTR     = 28, /*32 bytes, fixed length, null terminated description of what the sensor is for */

    PPI_SENSOR_APPID       = 29, /*4-byte identifier*/

    PPI_SENSOR_APPDATA     = 30, /* 60-byte app-id specific data*/

    PPI_SENSOR_EXT         = 31  /* Indicates n extended bitmap follows */

};

#define PPI_SENSOR_MAXTAGLEN 127 /* Increase as fields are added */

/*Sensor types */

#define SENSOR_RESERVED0       0

/*The values of these sensors corresponds to the order of their derivatives. double geek win */

#define SENSOR_VELOCITY        1

#define SENSOR_ACCELERATION    2

#define SENSOR_JERK            3

#define SENSOR_ROTATION      100

#define SENSOR_MAGNETIC      101

#define SENSOR_TEMPERATURE  1000

#define SENSOR_BAROMETER    1001

#define SENSOR_HUMIDITY     1002

#define SENSOR_TDOA_CLOCK   2000

#define SENSOR_PHASE        2001

static const value_string sensor_type_str[] = {

  { SENSOR_RESERVED0,    "Reserved" },

  { SENSOR_VELOCITY,     "Velocity"},

  { SENSOR_ACCELERATION, "Acceleration"},

  { SENSOR_JERK,         "Jerk"},

  { SENSOR_ROTATION,     "Rotation"},

  { SENSOR_MAGNETIC,     "Magnetic"},

  { SENSOR_TEMPERATURE,  "Temperature"},

  { SENSOR_BAROMETER,    "Barometer"},

  { SENSOR_HUMIDITY,     "Humidity"},

  { SENSOR_TDOA_CLOCK,   "TDOA_Clock"},

  { SENSOR_PHASE,         "Phase"},

  { 0, NULL}

  };

static const value_string sensor_unit_str[] = {

  { SENSOR_RESERVED0,    "Reserved" },

  { SENSOR_VELOCITY,     "Meters/sec"},

  { SENSOR_ACCELERATION, "Meters/sec/sec"},

  { SENSOR_JERK,         "Meters/sec/sec/sec"},

  { SENSOR_ROTATION,     "Degrees/sec"},

  { SENSOR_MAGNETIC,     "Tesla"},

  { SENSOR_TEMPERATURE,  "Degrees Celsius"},

  { SENSOR_BAROMETER,    "Pascal"},

  { SENSOR_HUMIDITY,     "Humidity"},

  { SENSOR_TDOA_CLOCK,   "Seconds"},

  { SENSOR_PHASE,        "Degrees"},

  { 0, NULL}

  };

void proto_register_ppi_sensor(void);

/* protocol */

static int proto_ppi_sensor;

static int hf_ppi_sensor_version;

static int hf_ppi_sensor_pad;

static int hf_ppi_sensor_length;

static int hf_ppi_sensor_present;

static int hf_ppi_sensor_sensortype;

static int hf_ppi_sensor_scalefactor;

static int hf_ppi_sensor_val_x;

static int hf_ppi_sensor_val_y;

static int hf_ppi_sensor_val_z;

static int hf_ppi_sensor_val_t;

static int hf_ppi_sensor_val_e;

static int hf_ppi_sensor_descstr;

static int hf_ppi_sensor_appspecific_num; /* 4-byte tag no */

static int hf_ppi_sensor_appspecific_data; /* 60 byte arbitrary data */

/* "Present" flags */

/* These represent decoded-bits in the gui */

static int hf_ppi_sensor_present_sensortype;

static int hf_ppi_sensor_present_scalefactor;

static int hf_ppi_sensor_present_val_x;

static int hf_ppi_sensor_present_val_y;

static int hf_ppi_sensor_present_val_z;

static int hf_ppi_sensor_present_val_t;

static int hf_ppi_sensor_present_val_e;

static int hf_ppi_sensor_present_descstr;

static int hf_ppi_sensor_present_appspecific_num;

static int hf_ppi_sensor_present_appspecific_data;

static int hf_ppi_sensor_present_ext;

/* These represent arrow-dropdownthings in the gui */

static int ett_ppi_sensor;

static int ett_ppi_sensor_present;

static expert_field ei_ppi_sensor_present_bit;

static expert_field ei_ppi_sensor_version;

static expert_field ei_ppi_sensor_length;

/* used with ScaleFactor */

static double

base_10_expt(int power)

{

    double ret = 1;

    int provide_frac = 0;

    if (power == 0) /* likely*/

        return 1;

    /* if negative, negate when we return*/

    if (power < 0)

    {

        power *= -1;

        provide_frac = 1;

    }

    while (power > 0)

    {

        ret = ret * 10;

        power--;

    }

    if (! provide_frac)

        return ret;

    else

        return (1.0/ret);

}

static int

dissect_ppi_sensor(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) {

    /* The fixed values up front */

    uint32_t version;

    unsigned length;

    unsigned length_remaining;

    proto_tree *ppi_sensor_tree = NULL;

    proto_tree *pt, *my_pt;

    proto_item *version_item, *length_item;

    proto_tree *sensor_line;

    /* sensor type in english */

    const char *type_str = "Unknown sensor";

    const char *unit_str = "Unknown unit";

    static int * const ppi_sensor_present_flags[] = {

        &hf_ppi_sensor_present_sensortype,

        &hf_ppi_sensor_present_scalefactor,

        &hf_ppi_sensor_present_val_x,

        &hf_ppi_sensor_present_val_y,

        &hf_ppi_sensor_present_val_z,

        &hf_ppi_sensor_present_val_t,

        &hf_ppi_sensor_present_val_e,

        &hf_ppi_sensor_present_descstr,

        &hf_ppi_sensor_present_appspecific_num,

        &hf_ppi_sensor_present_appspecific_data,

        &hf_ppi_sensor_present_ext,

        NULL

    };

    /* bits*/

    int bit;

    uint32_t present, next_present;

    unsigned offset = 0;

    /* values actually read out, for displaying */

    uint16_t sensortype =0;

    char   scalefactor = 0;

    double c_val=0; /*curr val */

    uint32_t val_t=0; /*temp curr val*/

    uint32_t t_appspecific_num; /* temporary conversions */

    double curr_native_val; /* this will have scaling_factor applied. displayed in sensor line */

    char* curr_str;

    /* Clear out stuff in the info column */

    col_clear(pinfo->cinfo,COL_INFO);

    /* pull out the first three fields of the BASE-GEOTAG-HEADER */

    version = tvb_get_uint8(tvb, offset);

    length = tvb_get_letohs(tvb, offset+2);

    present = tvb_get_letohl(tvb, offset+4);

    /* Setup basic column info */

    col_add_fstr(pinfo->cinfo, COL_INFO, "PPI Sensor info v%u, Length %u ",

                     version, length);

    /* Create the basic dissection tree*/

    sensor_line = proto_tree_add_protocol_format(tree, proto_ppi_sensor,

                                        tvb, 0, length, "PPI Sensor Header v%u, Length %u", version, length);

    /*Add in the fixed ppi-geotagging-header fields: ver, pad, len */

    ppi_sensor_tree = proto_item_add_subtree(sensor_line, ett_ppi_sensor);

    version_item = proto_tree_add_uint(ppi_sensor_tree, hf_ppi_sensor_version,

                        tvb, offset, 1, version);

    proto_tree_add_item(ppi_sensor_tree, hf_ppi_sensor_pad,

                        tvb, offset + 1, 1, ENC_BIG_ENDIAN);

    length_item = proto_tree_add_uint(ppi_sensor_tree, hf_ppi_sensor_length,

                                tvb, offset + 2, 2, length);

    /*fixed ppi-geotagging-header fields finished, move onto the fields marked present*/

    /* We support v1 and v2 of Sensor tags (identical) */

    if (! (version == 1 || version == 2) ) {

        expert_add_info_format(pinfo, version_item, &ei_ppi_sensor_version, "Invalid version (got %d,  expected 1 or 2)", version);

    }

    length_remaining = length;

    /* minimum length check, should at least be a fixed-size geotagging-base header*/

    if (length_remaining < PPI_GEOBASE_MIN_HEADER_LEN) {

        /*

         * Base-geotag-header (Radiotap lookalike) is shorter than the fixed-length portion

         * plus one "present" bitset.

         */

        expert_add_info_format(pinfo, length_item, &ei_ppi_sensor_length, "Invalid PPI-Sensor length - minimum length is 8");

        return 2;

    }

    /* perform max length sanity checking */

    if (length > PPI_SENSOR_MAXTAGLEN ) {

        expert_add_info_format(pinfo, length_item, &ei_ppi_sensor_length, "Invalid PPI-Sensor length  (got %d, %d max\n)", length, PPI_SENSOR_MAXTAGLEN);

        return 2;

    }

    /* Subtree for the "present flags" bitfield. */

    pt = proto_tree_add_bitmask(ppi_sensor_tree, tvb, offset + 4, hf_ppi_sensor_present, ett_ppi_sensor_present, ppi_sensor_present_flags, ENC_LITTLE_ENDIAN);

    offset += PPI_GEOBASE_MIN_HEADER_LEN;

    length_remaining -= PPI_GEOBASE_MIN_HEADER_LEN;

    /* Now all of the fixed length, fixed location stuff is over. Loop over the bits */

    for (; present; present = next_present) {

        /* clear the least significant bit that is set */

        next_present = present & (present - 1);

        /* extract the least significant bit that is set */

        bit = BITNO_32(present ^ next_present);

        switch (bit) {

        case  PPI_SENSOR_SENSORTYPE:

            if (length_remaining < 2)

                break;

            sensortype= tvb_get_letohs(tvb, offset);

            type_str = val_to_str_const (sensortype, sensor_type_str, "Unknown Sensor type");

            unit_str = val_to_str_const (sensortype, sensor_unit_str, "Unknown Unit");

            if (tree) {

                my_pt = proto_tree_add_uint(ppi_sensor_tree, hf_ppi_sensor_sensortype, tvb, offset , 2, sensortype);

                proto_item_append_text (my_pt, " %s", type_str);

                proto_item_set_text(sensor_line, "Sensor: %s", type_str);

            }

            offset+=2;

            length_remaining-=2;

            break;

        case PPI_SENSOR_SCALEFACTOR:

            if (length_remaining < 1)

                break;

            scalefactor = (char) tvb_get_uint8(tvb, offset);

            proto_tree_add_int(ppi_sensor_tree, hf_ppi_sensor_scalefactor, tvb, offset, 1, scalefactor);

            offset+=1;

            length_remaining-=1;

            break;

        case  PPI_SENSOR_VAL_X:

            if (length_remaining < 4)

                break;

            val_t = tvb_get_letohl(tvb, offset);

            c_val = ppi_fixed6_4_to_double(val_t);

            if (tree) {

                my_pt = proto_tree_add_double(ppi_sensor_tree, hf_ppi_sensor_val_x, tvb, offset, 4, c_val);

                proto_item_append_text (my_pt, " %s", unit_str);

                curr_native_val = c_val * base_10_expt(scalefactor); /* this will almost always be equal to the original val */

                proto_item_set_text(sensor_line, "Sensor: %s %f %s", type_str, curr_native_val, unit_str);

            }

            offset+=4;

            length_remaining-=4;

            break;

        case  PPI_SENSOR_VAL_Y:

            if (length_remaining < 4)

                break;

            val_t = tvb_get_letohl(tvb, offset);

            c_val = ppi_fixed6_4_to_double(val_t);

            if (tree) {

                my_pt = proto_tree_add_double(ppi_sensor_tree, hf_ppi_sensor_val_y, tvb, offset, 4, c_val);

                proto_item_append_text (my_pt, " %s", unit_str);

                curr_native_val = c_val * base_10_expt(scalefactor); /* this will almost always be equal to the original val */

                proto_item_set_text(sensor_line, "Sensor: %s %f %s", type_str, curr_native_val, unit_str);

            }

            offset+=4;

            length_remaining-=4;

            break;

        case  PPI_SENSOR_VAL_Z:

            if (length_remaining < 4)

                break;

            val_t = tvb_get_letohl(tvb, offset);

            c_val = ppi_fixed6_4_to_double(val_t);

            if (tree) {

                my_pt = proto_tree_add_double(ppi_sensor_tree, hf_ppi_sensor_val_z, tvb, offset, 4, c_val);

                proto_item_append_text (my_pt, " %s", unit_str);

                curr_native_val = c_val * base_10_expt(scalefactor); /* this will almost always be equal to the original val */

                proto_item_set_text(sensor_line, "Sensor: %s %f %s", type_str, curr_native_val, unit_str);

            }

            offset+=4;

            length_remaining-=4;

            break;

        case  PPI_SENSOR_VAL_T:

            if (length_remaining < 4)

                break;

            val_t = tvb_get_letohl(tvb, offset);

            c_val = ppi_fixed6_4_to_double(val_t);

            if (tree) {

                my_pt = proto_tree_add_double(ppi_sensor_tree, hf_ppi_sensor_val_t, tvb, offset, 4, c_val);

                proto_item_append_text (my_pt, " %s", unit_str);

                curr_native_val = c_val * base_10_expt(scalefactor); /* this will almost always be equal to the original val */

                proto_item_set_text(sensor_line, "Sensor: %s %f %s", type_str, curr_native_val, unit_str);

            }

            offset+=4;

            length_remaining-=4;

            break;

        case  PPI_SENSOR_VAL_E:

            if (length_remaining < 4)

                break;

            val_t = tvb_get_letohl(tvb, offset);

            c_val = ppi_fixed6_4_to_double(val_t);

            if (tree) {

                my_pt = proto_tree_add_double(ppi_sensor_tree, hf_ppi_sensor_val_e, tvb, offset, 4, c_val);

                proto_item_append_text (my_pt, " %s", unit_str);

            }

            offset+=4;

            length_remaining-=4;

            break;

        case  PPI_SENSOR_DESCSTR:

            if (length_remaining < 32)

                break;

            if (tree)

            {

                /* proto_tree_add_item(ppi_vector_tree, hf_ppi_vector_descstr, tvb, offset, 32, ENC_NA); */

                curr_str = tvb_format_stringzpad(pinfo->pool, tvb, offset, 32);

                proto_tree_add_string(ppi_sensor_tree, hf_ppi_sensor_descstr, tvb, offset, 32, curr_str);

                proto_item_append_text(sensor_line, " (%s)", curr_str);

            }

            offset+=32;

            length_remaining-=32;

            break;

        case  PPI_SENSOR_APPID:

            if (length_remaining < 4)

                break;

            t_appspecific_num  = tvb_get_letohl(tvb, offset); /* application specific parsers may switch on this later */

            proto_tree_add_uint(ppi_sensor_tree, hf_ppi_sensor_appspecific_num, tvb, offset, 4, t_appspecific_num);

            offset+=4;

            length_remaining-=4;

            break;

        case  PPI_SENSOR_APPDATA:

            if (length_remaining < 60)

                break;

            proto_tree_add_item(ppi_sensor_tree, hf_ppi_sensor_appspecific_data, tvb, offset, 60,  ENC_NA);

            offset+=60;

            length_remaining-=60;

            break;

        default:

            /*

             * This indicates a field whose size we do not

             * know, so we cannot proceed.

             */

            expert_add_info_format(pinfo, pt, &ei_ppi_sensor_present_bit, "Error: PPI-SENSOR: unknown bit (%d) set in present field.", bit);

            next_present = 0;

            continue;

        }

    };

    return tvb_captured_length(tvb);

}

void

proto_register_ppi_sensor(void) {

    /* The following array initializes those header fields declared above to the values displayed */

    static hf_register_info hf[] = {

        { &hf_ppi_sensor_version,

          { "Header revision", "ppi_sensor.version",

            FT_UINT8, BASE_DEC, NULL, 0x0,

            "Version of ppi_sensor header format", HFILL } },

        { &hf_ppi_sensor_pad,

          { "Header pad", "ppi_sensor.pad",

            FT_UINT8, BASE_DEC, NULL, 0x0,

            "Padding", HFILL } },

        { &hf_ppi_sensor_length,

          { "Header length", "ppi_sensor.length",

            FT_UINT16, BASE_DEC, NULL, 0x0,

            "Length of header including version, pad, length and data fields", HFILL } },

        { &hf_ppi_sensor_present,

          { "Present", "ppi_sensor.present",

            FT_UINT32, BASE_HEX, NULL, 0x0, "Bitmask indicating which fields are present", HFILL } },

        /* This first set is for the base_tag_header.it_present bitfield */

#define PPI_SENSOR_MASK_SENSORTYPE      0x00000001  /* 0 */

#define PPI_SENSOR_MASK_SCALEFACTOR     0x00000002  /* 1 */

#define PPI_SENSOR_MASK_VAL_X           0x00000004  /* 2 */

#define PPI_SENSOR_MASK_VAL_Y           0x00000008  /* 3 */

#define PPI_SENSOR_MASK_VAL_Z           0x00000010  /* 4 */

#define PPI_SENSOR_MASK_VAL_T           0x00000020  /* 5 */

#define PPI_SENSOR_MASK_VAL_E           0x00000040  /* 6 */

#define PPI_SENSOR_MASK_SERIALNUM       0x04000000  /* 26 */

#define PPI_SENSOR_MASK_MODELSTR        0x08000000  /* 27 */

#define PPI_SENSOR_MASK_DESCSTR         0x10000000  /* 28 */

#define PPI_SENSOR_MASK_APPID           0x20000000  /* 29 */

#define PPI_SENSOR_MASK_APPDATA         0x40000000  /* 30 */

#define PPI_SENSOR_MASK_EXT             0x80000000  /* 31 */

        /* Boolean 'present' flags */

        { &hf_ppi_sensor_present_sensortype,

          { "sensortype", "ppi_sensor.present.sensortype",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_SENSORTYPE,

            "Specifies if the sensor type field  is present", HFILL } },

        { &hf_ppi_sensor_present_scalefactor,

          { "scalefactor", "ppi_sensor.present.scalefactor",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_SCALEFACTOR,

            "Specifies if the sensor scale factor field is present", HFILL } },

        { &hf_ppi_sensor_present_val_x,

          { "val_x", "ppi_sensor.present.val_x",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_VAL_X,

            "Specifies if the sensor val_x field is present", HFILL } },

        { &hf_ppi_sensor_present_val_y,

          { "val_y", "ppi_sensor.present.val_y",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_VAL_Y,

            "Specifies if the sensor val_y field is present", HFILL } },

        { &hf_ppi_sensor_present_val_z,

          { "val_z", "ppi_sensor.present.val_z",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_VAL_Z,

            "Specifies if the BeamID field is present", HFILL } },

        { &hf_ppi_sensor_present_val_t,

          { "val_t", "ppi_sensor.present.val_t",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_VAL_T,

            "Specifies if the val_t field is present", HFILL } },

        { &hf_ppi_sensor_present_val_e,

          { "val_e", "ppi_sensor.present.val_e",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_VAL_E,

            "Specifies if the val_e field is present", HFILL } },

        { &hf_ppi_sensor_present_descstr,

          { "Description", "ppi_sensor.present.descr",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_DESCSTR,

            "Specifies if the description string is present", HFILL } },

        { &hf_ppi_sensor_present_appspecific_num,

          { "appid", "ppi_sensor.present.appid",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_APPID,

            "Specifies if the application specific field id is present", HFILL } },

        { &hf_ppi_sensor_present_appspecific_data,

          { "appdata", "ppi_sensor.present.appdata",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_APPDATA,

            "Specifies if the application specific data field  is present", HFILL } },

        { &hf_ppi_sensor_present_ext,

          { "ext", "ppi_sensor.present.ext",

            FT_BOOLEAN, 32, NULL, PPI_SENSOR_MASK_EXT,

            "Specifies if there are any extensions to the header present", HFILL } },

        /* Now we get to the actual data fields */

        { &hf_ppi_sensor_sensortype,

          { "SensorType", "ppi_sensor.sensortype",

            FT_UINT16, BASE_DEC, NULL, 0x0,

            "Type of sensor", HFILL } },

        { &hf_ppi_sensor_scalefactor,

          { "ScaleFactor", "ppi_sensor.scalefactor",

            FT_INT8, BASE_DEC, NULL, 0x0,

            "Scaling factor", HFILL } },

        { &hf_ppi_sensor_val_x,

          { "Val_X", "ppi_sensor.val_x",

            FT_DOUBLE, BASE_NONE, NULL, 0x0,

            "Value in X-dimesion", HFILL } },

        { &hf_ppi_sensor_val_y,

          { "Val_Y", "ppi_sensor.val_y",

            FT_DOUBLE, BASE_NONE, NULL, 0x0,

            "Value in Y-dimension", HFILL } },

        { &hf_ppi_sensor_val_z,

          { "Val_Z", "ppi_sensor.val_z",

            FT_DOUBLE, BASE_NONE, NULL, 0x0,

            "Value in Z-dimension", HFILL } },

        { &hf_ppi_sensor_val_t,

          { "Val_T", "ppi_sensor.val_t",

            FT_DOUBLE, BASE_NONE, NULL, 0x0,

            "Value total (dimensionless)", HFILL } },

        { &hf_ppi_sensor_val_e,

          { "Val_E", "ppi_sensor.val_e",

            FT_DOUBLE, BASE_NONE, NULL, 0x0,

            "Margin of error", HFILL } },

        { &hf_ppi_sensor_descstr,

          { "Description", "ppi_sensor.descr",

            FT_STRING,  BASE_NONE, NULL, 0x0,

            NULL, HFILL } } ,

        { &hf_ppi_sensor_appspecific_num,

          { "Application Specific id", "ppi_sensor.appid",

            FT_UINT32, BASE_HEX, NULL, 0x0,

            "Application-specific identifier", HFILL } },

        { &hf_ppi_sensor_appspecific_data,

          { "Application specific data", "ppi_sensor.appdata",

            FT_BYTES, BASE_NONE, NULL, 0x0,

            "Application-specific data", HFILL } },

    };

    static int *ett[] = {

        &ett_ppi_sensor,

        &ett_ppi_sensor_present,

    };

    static ei_register_info ei[] = {

        { &ei_ppi_sensor_present_bit, { "ppi_sensor.present.unknown_bit", PI_PROTOCOL, PI_WARN, "Error: PPI-ANTENNA: unknown bit set in present field.", EXPFILL }},

        { &ei_ppi_sensor_version, { "ppi_sensor.version.unsupported", PI_PROTOCOL, PI_WARN, "Invalid version", EXPFILL }},

        { &ei_ppi_sensor_length, { "ppi_sensor.length.invalid", PI_MALFORMED, PI_ERROR, "Invalid length", EXPFILL }},

    };

    expert_module_t* expert_ppi_sensor;

    proto_ppi_sensor = proto_register_protocol("PPI sensor decoder", "PPI sensor Decoder", "ppi_sensor");

    proto_register_field_array(proto_ppi_sensor, hf, array_length(hf));

    proto_register_subtree_array(ett, array_length(ett));

    expert_ppi_sensor = expert_register_protocol(proto_ppi_sensor);

    expert_register_field_array(expert_ppi_sensor, ei, array_length(ei));

    register_dissector("ppi_sensor", dissect_ppi_sensor, proto_ppi_sensor);

}

/*

 * Editor modelines

 *

 * Local Variables:

 * c-basic-offset: 4

 * tab-width: 8

 * indent-tabs-mode: nil

 * End:

 *

 * ex: set shiftwidth=4 tabstop=8 expandtab:

 * :indentSize=4:tabSize=8:noTabs=true:

 */