/* packet-simple.c

 * Routines for SIMPLE dissection

 * Copyright 2015 Peter Ross

 *

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

 */

/* SIMPLE (Standard Interface for Multiple Platform Link Evaluation)

 * is a protocol for exchanging tactical data link messages, such as Link 16,

 * over Internet Protocols.

 *

 * The protocol is described in STANAG 5602. See:

 * http://assistdoc1.dla.mil/qsDocDetails.aspx?ident_number=213042

 */

#include "config.h"

#include <epan/packet.h>

#include <epan/tfs.h>

#include <wsutil/array.h>

#include <epan/expert.h>

#include "packet-link16.h"

void proto_reg_handoff_simple(void);

void proto_register_simple(void);

static const range_string Node_Strings[] = {

    { 1, 128, "Unicast" },

    { 129, 129, "Broadcast" },

    { 160, 168, "Multicast" },

    { 169, 169, "Adjacent" },

    { 0, 0, NULL },

};

static const value_string Subnode_Strings[] = {

    { 1, "RTT" },

    { 2, "Terminal-Host Interface" },

    { 4, "File & Mail Transfers" },

    { 5, "Open" },

    { 6, "Status & Control" },

    { 7, "Time Synchronisation" },

    { 202, "Scenario (Script)" },

    { 203, "IJMS" },

    { 204, "Link 4" },

    { 205, "Link 11" },

    { 206, "Link 16" },

    { 207, "Link 22" },

    { 208, "DIS" },

    { 209, "Voice Group A" },

    { 210, "Voice Group B" },

    { 211, "Link 11B" },

    { 0, NULL },

};

enum {

    SIMPLE_LINK16 = 1,

    SIMPLE_STATUS = 61

};

static const value_string PacketType_Strings[] = {

    { SIMPLE_LINK16, "Link 16" },

    { 2, "Link 11" },

    { 3, "Link 4" },

    { 4, "Link 22" },

    { 5, "Interim JTIDS Message Standard (IJMS)" },

    { 8, "Variable Message Format (VMF)" },

    { 10, "MIDS Terminal Specific Messages (MTSM)" },

    { 13, "MIDS/JTIDS Voice" },

    { 20, "Link 11B" },

    { 32, "DIS Protocol Data Unit (PDU)" },

    { SIMPLE_STATUS, "Status/Configuration" },

    { 62, "E-mail/File Transfer Protocol (FTP)" },

    { 63, "Round Trip Timing (RTT)" },

    { 65, "Time Synchronisation" },

    { 66, "TSA Status" },

    { 100, "National Message" },

    { 0, NULL },

};

enum {

    SIMPLE_LINK16_FIXED_FORMAT = 2

};

static const value_string Link16_Subtype_Strings[] = {

    { 0, "Uncoded Free Text" },

    { 1, "Coded Free Text" },

    { SIMPLE_LINK16_FIXED_FORMAT, "Fixed Format" },

    { 0, NULL },

};

static const value_string Status_Subtype_Strings[] = {

    { 1, "Node Status" },

    { 0, NULL },

};

static const value_string Security_Level_Strings[] = {

    { 0, "Unclassified" },

    { 1, "NATO Unclassified" },

    { 2, "Confidential" },

    { 3, "NATO Confidential" },

    { 4, "Secret" },

    { 5, "NATO Secret" },

    { 6, "National Only" },

    { 7, "Level 7" },

    { 8, "Level 8" },

    { 9, "Level 9" },

    { 0, NULL },

};

static const value_string Link16_Terminal_Type[] = {

    { 0, "None" },

    { 1, "US Navy Air (JTIDS)" },

    { 2, "US Navy Ship (JTIDS)" },

    { 3, "US F-15 (JTIDS)" },

    { 4, "US F/A-18 (MIDS)" },

    { 5, "US Army Class 2M (JTIDS)" },

    { 6, "US MCE (JTIDS)" },

    { 7, "E-3 (JTIDS)" },

    { 8, "UK Tornado F3 (JTIDS)" },

    { 9, "UK UKADGE (JTIDS)" },

    { 10, "Low Volume Terminal - Generic (MIDS)" },

    { 11, "Low Volume Terminal - Platform Type A (MIDS)" },

    { 12, "Low Volume Terminal - Platform Type B (MIDS)" },

    { 13, "Low Volume Terminal - Platform Type C (MIDS)" },

    { 14, "Low Volume Terminal - Platform Type D (MIDS)" },

    { 15, "Low Volume Terminal - Platform Type E (MIDS)" },

    { 16, "Low Volume Terminal - Platform Type F (MIDS)" },

    { 17, "Low Volume Terminal - Platform Type G (MIDS)" },

    { 18, "Low Volume Terminal 2, US Army (MIDS)" },

    { 19, "Low Volume Terminal MIDS on Ship (MOS) (MIDS)" },

    { 20, "US Fighter Data Link (FDL) (MIDS)" },

    { 21, "AN/URC-138" },

    { 22, "Low Volume Terminal Platform Type H (MIDS)" },

    { 23, "Low Volume Terminal Platform Type I (MIDS)" },

    { 0, NULL },

};

static const value_string Link16_Role[] = {

    { 0, "None" },

    { 1, "SIMPLE Host (SH)" },

    { 2, "SIMPLE Terminal Emulator (STE)" },

    { 3, "SIMPLE Network Monitor (SNM)" },

    { 4, "SIMPLE Virtual Host (SVH)" },

    { 5, "SIMPLE Virtual Terminal (SVT)" },

    { 0, NULL },

};

static const value_string Link16_Sync_Status[] = {

    { 0, "None" },

    { 1, "Net Entry in Progress" },

    { 2, "Coarse Sync" },

    { 3, "Fine Sync" },

    { 0, NULL },

};

static const value_string Link_Terminal_Host_Status[] = {

    { 0, "Inactive" },

    { 1, "Active" },

    { 0, NULL },

};

static const value_string Link11_DTS_Type[] = {

    { 0, "None" },

    { 1, "MIL-STD-1397 parallel" },

    { 2, "MIL-STD-188-203-1A serial" },

    { 0, NULL },

};

static const value_string Link11_Role[] = {

    { 0, "None"},

    { 1, "SIMPLE DTS EMULATOR (SDE) Picket"},

    { 2, "SDE Net Control Station (NCS)" },

    { 3, "SIMPLE Participating Unit (PU) Emulator (SPE)" },

    { 0, NULL },

};

static int proto_simple;

static dissector_handle_t simple_dissector_handle;

static dissector_handle_t link16_handle;

static int hf_simple_sync_byte_1;

static int hf_simple_sync_byte_2;

static int hf_simple_length;

static int hf_simple_sequence_number;

static int hf_simple_src_node;

static int hf_simple_src_subnode;

static int hf_simple_dst_node;

static int hf_simple_dst_subnode;

static int hf_simple_packet_size;

static int hf_simple_packet_type;

static int hf_simple_transit_time;

static int hf_simple_link16_subtype;

static int hf_simple_link16_rc;

static int hf_simple_link16_network;

static int hf_simple_link16_ssc2;

static int hf_simple_link16_npg;

static int hf_simple_link16_ssc1;

static int hf_simple_link16_stn;

static int hf_simple_link16_word_count;

static int hf_simple_link16_loopback_id;

static int hf_simple_status_subtype;

static int hf_simple_status_word_count;

static int hf_simple_status_name;

static int hf_simple_status_time_hours;

static int hf_simple_status_node_id;

static int hf_simple_status_time_seconds;

static int hf_simple_status_time_minutes;

static int hf_simple_status_security_level;

static int hf_simple_status_node_entry_flag;

static int hf_simple_status_relay_hop;

static int hf_simple_status_dx_flag_system_messages;

static int hf_simple_status_dx_flag_common_tims_bims;

static int hf_simple_status_dx_flag_common_toms_boms;

static int hf_simple_status_dx_flag_simple_receive;

static int hf_simple_status_dx_flag_simple_transmit;

static int hf_simple_status_dx_flag_all_tims_bims;

static int hf_simple_status_dx_flag_all_toms_boms;

static int hf_simple_status_dx_file_id;

static int hf_simple_status_spare_1;

static int hf_simple_status_link16_terminal_type;

static int hf_simple_status_link16_role;

static int hf_simple_status_link16_sync_status;

static int hf_simple_status_link16_terminal_host_status;

static int hf_simple_status_link16_stn;

static int hf_simple_status_spare_2;

static int hf_simple_status_link11_dts_type;

static int hf_simple_status_link11_role;

static int hf_simple_status_link11_pu;

static int hf_simple_status_link11_dts_host_status;

static int hf_simple_status_spare_3;

static int hf_simple_checksum;

static int hf_simple_checksum_status;

static int ett_simple;

static int ett_packet;

static int ett_simple_status_dx_flag;

static expert_field ei_simple_sync_bytes_bad;

static expert_field ei_simple_length_bad;

static expert_field ei_simple_packet_size_bad;

static expert_field ei_simple_checksum_bad;

static void dissect_simple_link16(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset)

{

    unsigned subtype, stn, word_count, i;

    Link16State state;

    tvbuff_t *newtvb;

    proto_tree_add_item_ret_uint(tree, hf_simple_link16_subtype, tvb, offset, 1, ENC_NA, &subtype);

    offset++;

    proto_tree_add_item(tree, hf_simple_link16_rc, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_link16_network, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_link16_ssc2, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_link16_npg, tvb, offset, 2, ENC_LITTLE_ENDIAN);

    offset += 2;

    proto_tree_add_item(tree, hf_simple_link16_ssc1, tvb, offset, 2, ENC_LITTLE_ENDIAN);

    offset += 2;

    proto_tree_add_item_ret_uint(tree, hf_simple_link16_stn, tvb, offset, 2, ENC_LITTLE_ENDIAN, &stn);

    offset += 2;

    proto_tree_add_item_ret_uint(tree, hf_simple_link16_word_count, tvb, offset, 2, ENC_LITTLE_ENDIAN, &word_count);

    offset += 2;

    proto_tree_add_item(tree, hf_simple_link16_loopback_id, tvb, offset, 2, ENC_LITTLE_ENDIAN);

    offset += 2;

    col_append_fstr(pinfo->cinfo, COL_INFO, ", STN: %05o, Words:", stn);

    switch(subtype) {

    case SIMPLE_LINK16_FIXED_FORMAT:

        memset(&state, 0, sizeof(state));

        for (i = 0; i < word_count; i += 5) {

            newtvb = tvb_new_subset_length(tvb, offset, 10);

            add_new_data_source(pinfo, newtvb, "Link 16 Word");

            call_dissector_with_data(link16_handle, newtvb, pinfo, tree, &state);

            offset += 10;

        }

        break;

    }

}

static int * const simple_status_dx_flag_fields[] = {

    &hf_simple_status_dx_flag_system_messages,

    &hf_simple_status_dx_flag_common_tims_bims,

    &hf_simple_status_dx_flag_common_toms_boms,

    &hf_simple_status_dx_flag_simple_receive,

    &hf_simple_status_dx_flag_simple_transmit,

    &hf_simple_status_dx_flag_all_tims_bims,

    &hf_simple_status_dx_flag_all_toms_boms,

    NULL

};

#define SIMPLE_STATUS_NAME_LEN 10

static void dissect_simple_status(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)

{

    char *name;

    unsigned link16_status, pu;

    proto_tree_add_item(tree, hf_simple_status_subtype, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_word_count, tvb, offset, 1, ENC_NA);

    offset++;

    name = (char*)tvb_get_stringzpad(pinfo->pool, tvb, offset, SIMPLE_STATUS_NAME_LEN, ENC_ASCII|ENC_NA);

    col_append_fstr(pinfo->cinfo, COL_INFO, ", Name: %s", name);

    proto_tree_add_item(tree, hf_simple_status_name, tvb, offset, SIMPLE_STATUS_NAME_LEN, ENC_ASCII);

    offset += SIMPLE_STATUS_NAME_LEN;

    proto_tree_add_item(tree, hf_simple_status_time_hours, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_node_id, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_time_seconds, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_time_minutes, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_security_level, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_node_entry_flag, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_relay_hop, tvb, offset, 16, ENC_NA);

    offset += 16;

    proto_tree_add_bitmask_text(tree, tvb, offset, 2, "Data Extraction Flags", NULL, ett_simple_status_dx_flag, simple_status_dx_flag_fields, ENC_LITTLE_ENDIAN, 0);

    offset += 2;

    proto_tree_add_item(tree, hf_simple_status_dx_file_id, tvb, offset, 8, ENC_ASCII);

    offset += 8;

    proto_tree_add_item(tree, hf_simple_status_spare_1, tvb, offset, 2, ENC_NA);

    offset += 2;

    proto_tree_add_item(tree, hf_simple_status_link16_terminal_type, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_link16_role, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_link16_sync_status, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item_ret_uint(tree, hf_simple_status_link16_terminal_host_status, tvb, offset, 1, ENC_NA, &link16_status);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_link16_stn, tvb, offset, 2, ENC_LITTLE_ENDIAN);

    if (link16_status)

        col_append_fstr(pinfo->cinfo, COL_INFO, ", STN: %05o", tvb_get_letohs(tvb, offset));

    offset += 2;

    proto_tree_add_item(tree, hf_simple_status_spare_2, tvb, offset, 2, ENC_NA);

    offset += 2;

    proto_tree_add_item(tree, hf_simple_status_link11_dts_type, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_link11_role, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item_ret_uint(tree, hf_simple_status_link11_pu, tvb, offset, 1, ENC_NA, &pu);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_link11_dts_host_status, tvb, offset, 1, ENC_NA);

    if (tvb_get_uint8(tvb, offset))

        col_append_fstr(pinfo->cinfo, COL_INFO, ", PU: %03o", pu);

    offset++;

    proto_tree_add_item(tree, hf_simple_status_spare_3, tvb, offset, 4, ENC_NA);

}

static void dissect_checksum(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)

{

    const uint8_t * v = tvb_get_ptr(tvb, 0, offset);

    uint16_t expected_checksum = 0;

    int i;

    for (i = 0; i < offset; i++)

        expected_checksum += v[i];

    proto_tree_add_checksum(tree, tvb, offset, hf_simple_checksum, hf_simple_checksum_status, &ei_simple_checksum_bad, pinfo, expected_checksum,

                            ENC_LITTLE_ENDIAN, PROTO_CHECKSUM_VERIFY);

}

static int dissect_simple(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)

{

    proto_item *simple_item = NULL, *item;

    proto_tree *simple_tree = NULL, *packet_tree = NULL;

    unsigned offset = 0, length, packet_size, packet_type;

    const char *packet_type_string;

    uint8_t sync_bytes_bad = 0;

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

    if (tree) {

        simple_item = proto_tree_add_item(tree, proto_simple, tvb, 0, -1, ENC_NA);

        simple_tree = proto_item_add_subtree(simple_item, ett_simple);

    }

    proto_tree_add_item(simple_tree, hf_simple_sync_byte_1, tvb, offset, 1, ENC_NA);

    sync_bytes_bad |= tvb_get_uint8(tvb, offset) ^ 0x49;

    offset++;

    proto_tree_add_item(simple_tree, hf_simple_sync_byte_2, tvb, offset, 1, ENC_NA);

    sync_bytes_bad |= tvb_get_uint8(tvb, offset) ^ 0x36;

    offset++;

    if (sync_bytes_bad)

        expert_add_info(pinfo, simple_item, &ei_simple_sync_bytes_bad);

    item = proto_tree_add_item_ret_uint(simple_tree, hf_simple_length, tvb, offset, 2, ENC_LITTLE_ENDIAN, &length);

    offset += 2;

    if (length < 16 || length >= 518 || length > tvb_reported_length(tvb))

        expert_add_info(pinfo, item, &ei_simple_length_bad);

    proto_tree_add_item(simple_tree, hf_simple_sequence_number, tvb, offset, 2, ENC_LITTLE_ENDIAN);

    offset += 2;

    proto_tree_add_item(simple_tree, hf_simple_src_node, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(simple_tree, hf_simple_src_subnode, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(simple_tree, hf_simple_dst_node, tvb, offset, 1, ENC_NA);

    offset++;

    proto_tree_add_item(simple_tree, hf_simple_dst_subnode, tvb, offset, 1, ENC_NA);

    offset++;

    item = proto_tree_add_item(simple_tree, hf_simple_packet_size, tvb, offset, 1, ENC_NA);

    packet_size = tvb_get_uint8(tvb, offset) * 2;

    if (packet_size < 8 || packet_size - 8 > tvb_reported_length(tvb))

        expert_add_info(pinfo, item, &ei_simple_packet_size_bad);

    packet_size -= 8;

    offset++;

    proto_tree_add_item_ret_uint(simple_tree, hf_simple_packet_type, tvb, offset, 1, ENC_NA, &packet_type);

    offset++;

    proto_tree_add_item(simple_tree, hf_simple_transit_time, tvb, offset, 2, ENC_LITTLE_ENDIAN);

    offset += 2;

    packet_type_string = val_to_str_const(packet_type, PacketType_Strings, "Unknown");

    col_add_str(pinfo->cinfo, COL_INFO, packet_type_string);

    packet_tree = proto_tree_add_subtree_format(simple_tree, tvb, offset, packet_size, ett_packet, NULL, "%s Packet", packet_type_string);

    switch(packet_type) {

    case SIMPLE_LINK16:

        dissect_simple_link16(tvb, pinfo, packet_tree, offset);

        break;

    case SIMPLE_STATUS:

        dissect_simple_status(tvb, pinfo, packet_tree, offset);

        break;

    }

    dissect_checksum(tvb, pinfo, simple_tree, length - 2);

    return tvb_captured_length(tvb);

}

void proto_register_simple(void)

{

    static hf_register_info hf[] = {

        { &hf_simple_sync_byte_1,

          { "Sync Byte 1", "simple.sync_byte_1", FT_UINT8, BASE_HEX, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_sync_byte_2,

          { "Sync Byte 2", "simple.sync_byte_2", FT_UINT8, BASE_HEX, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_length,

          { "Length", "simple.length", FT_UINT16, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_sequence_number,

          { "Sequence Number", "simple.sequence_number", FT_UINT16, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_src_node,

          { "Source Node", "simple.src_node", FT_UINT8, BASE_RANGE_STRING | BASE_DEC, RVALS(Node_Strings), 0x0,

            NULL, HFILL }},

        { &hf_simple_src_subnode,

          { "Source Subnode", "simple.src_subnode", FT_UINT8, BASE_DEC, VALS(Subnode_Strings), 0x0,

            NULL, HFILL }},

        { &hf_simple_dst_node,

          { "Destination Node", "simple.dst_node", FT_UINT8, BASE_RANGE_STRING | BASE_DEC, RVALS(Node_Strings), 0x0,

            NULL, HFILL }},

        { &hf_simple_dst_subnode,

          { "Destination Subnode", "simple.dst_subnode", FT_UINT8, BASE_DEC, VALS(Subnode_Strings), 0x0,

            NULL, HFILL }},

        { &hf_simple_packet_size,

          { "Packet Size", "simple.packet_size", FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_packet_type,

          { "Packet Type", "simple.packet_type", FT_UINT8, BASE_DEC, VALS(PacketType_Strings), 0x0,

            NULL, HFILL }},

        { &hf_simple_transit_time,

          { "Transit Time", "simple.transit_time", FT_UINT16, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_link16_subtype,

          { "Subtype", "simple.link16.subtype", FT_UINT8, BASE_DEC, VALS(Link16_Subtype_Strings), 0x0,

            NULL, HFILL }},

        { &hf_simple_link16_rc,

          { "R/C Flag", "simple.link16.rc", FT_BOOLEAN, BASE_NONE, TFS(&tfs_required_not_required), 0x0,

            NULL, HFILL }},

        { &hf_simple_link16_network,

          { "Network", "simple.link16.network", FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_link16_ssc2,

          { "Sequential Slot Count 2", "simple.link16.ssc2", FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_link16_npg,

          { "NPG Number", "simple.link16.npg", FT_UINT16, BASE_DEC, VALS(Link16_NPG_Strings), 0x0,

            NULL, HFILL }},

        { &hf_simple_link16_ssc1,

          { "Sequential Slot Count 1", "simple.link16.ssc1", FT_UINT16, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_link16_stn,

          { "Source Track Number", "simple.link16.stn", FT_UINT16, BASE_OCT, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_link16_word_count,

          { "Word Count", "simple.link16.word_count", FT_UINT16, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_link16_loopback_id,

          { "Loopback ID", "simple.link16.loopback_id", FT_UINT16, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_subtype,

          { "Subtype", "simple.status.subtype", FT_UINT8, BASE_HEX, VALS(Status_Subtype_Strings), 0x0,

            NULL, HFILL }},

        { &hf_simple_status_word_count,

          { "Word Count", "simple.status.word_count", FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_name,

          { "Name", "simple.status.name", FT_STRING, BASE_NONE, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_time_hours,

          { "Time (Hours)", "simple.status.time_hours", FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_node_id,

          { "Node Id", "simple.status.node_id", FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_time_seconds,

          { "Time (Seconds)", "simple.status.time_seconds", FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_time_minutes,

          { "Time (Minutes)", "simple.status.time_minutes", FT_UINT8, BASE_DEC, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_security_level,

          { "Security Level", "simple.status.security_level", FT_UINT8, BASE_DEC, VALS(Security_Level_Strings), 0x0,

            NULL, HFILL }},

        { &hf_simple_status_node_entry_flag,

          { "Node Entry Flag", "simple.status.node_entry_flag", FT_BOOLEAN, BASE_NONE, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_relay_hop,

          { "Relay Hop", "simple.status.relay_hop", FT_BYTES, BASE_NONE, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_dx_flag_system_messages,

          { "DX System Messages", "simple.status.dx_flag.system_messages", FT_BOOLEAN, 16, NULL, 0x0001,

            NULL, HFILL }},

        { &hf_simple_status_dx_flag_common_tims_bims,

          { "DX Common TIMS/BIMS", "simple.status.dx_flag.common_tims_bims", FT_BOOLEAN, 16, NULL, 0x0002,

            NULL, HFILL }},

        { &hf_simple_status_dx_flag_common_toms_boms,

          { "DX Common TOMS/BOMS", "simple.status.dx_flag.common_toms_boms", FT_BOOLEAN, 16, NULL, 0x0004,

            NULL, HFILL }},

        { &hf_simple_status_dx_flag_simple_receive,

          { "DX SIMPLE Receive", "simple.status.dx_flag.simple_receive", FT_BOOLEAN, 16, NULL, 0x8,

            NULL, HFILL }},

        { &hf_simple_status_dx_flag_simple_transmit,

          { "DX SIMPLE Transmit", "simple.status.dx_flag.simple_transmit", FT_BOOLEAN, 16, NULL, 0x0010,

            NULL, HFILL }},

        { &hf_simple_status_dx_flag_all_tims_bims,

          { "DX All TIMS/BIMS", "simple.status.dx_flag.all_tims_bims", FT_BOOLEAN, 16, NULL, 0x0020,

            NULL, HFILL }},

        { &hf_simple_status_dx_flag_all_toms_boms,

          { "DX All TOMS/BOMS", "simple.status.dx_flag.all_toms_boms", FT_BOOLEAN, 16, NULL, 0x0040,

            NULL, HFILL }},

        { &hf_simple_status_dx_file_id,

          { "DX File Id", "simple.status.dx_file_id", FT_STRING, BASE_NONE, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_spare_1,

          { "Spare1", "simple.status.spare_1", FT_BYTES, BASE_NONE, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_link16_terminal_type,

          { "Link 16 Type", "simple.status.link16.terminal_type", FT_UINT8, BASE_DEC, VALS(Link16_Terminal_Type), 0x0,

            NULL, HFILL }},

        { &hf_simple_status_link16_role,

          { "Link 16 Role", "simple.status.link16.role", FT_UINT8, BASE_DEC, VALS(Link16_Role), 0x0,

            NULL, HFILL }},

        { &hf_simple_status_link16_sync_status,

          { "Link 16 Sync Status", "simple.status.link16.sync_status", FT_UINT8, BASE_DEC, VALS(Link16_Sync_Status), 0x0,

            NULL, HFILL }},

        { &hf_simple_status_link16_terminal_host_status,

          { "Link 16 Terminal/Host Status", "simple.status.link16.terminal_host_status", FT_UINT8, BASE_DEC, VALS(Link_Terminal_Host_Status), 0x0,

            NULL, HFILL }},

        { &hf_simple_status_link16_stn,

          { "Link 16 STN", "simple.status.link16.stn", FT_UINT16, BASE_OCT, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_spare_2,

          { "Spare2", "simple.status.spare_2", FT_BYTES, BASE_NONE, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_link11_dts_type,

          { "Link 11 DTS Type", "simple.status.link11.dts_type", FT_UINT8, BASE_DEC, VALS(Link11_DTS_Type), 0x0,

            NULL, HFILL }},

        { &hf_simple_status_link11_role,

          { "Link 11 Role", "simple.status.link11.role", FT_UINT8, BASE_DEC, VALS(Link11_Role), 0x0,

            NULL, HFILL }},

        { &hf_simple_status_link11_pu,

          { "Link 11 PU", "simple.status.link11.pu", FT_UINT8, BASE_OCT, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_status_link11_dts_host_status,

          { "Link 11 DTS/Host Status", "simple.status.link11.dts_host_status", FT_UINT8, BASE_DEC, VALS(Link_Terminal_Host_Status), 0x0,

            NULL, HFILL }},

        { &hf_simple_status_spare_3,

          { "Spare3", "simple.status.spare_3", FT_BYTES, BASE_NONE, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_checksum,

          { "Checksum", "simple.checksum", FT_UINT16, BASE_HEX, NULL, 0x0,

            NULL, HFILL }},

        { &hf_simple_checksum_status,

          { "Checksum Status", "simple.checksum.status", FT_UINT8, BASE_NONE, VALS(proto_checksum_vals), 0x0,

            NULL, HFILL }}

    };

    static int *ett[] = {

        &ett_simple,

        &ett_packet,

        &ett_simple_status_dx_flag,

    };

    static ei_register_info ei[] = {

        { &ei_simple_sync_bytes_bad, { "simple.sync_bytes.bad", PI_MALFORMED, PI_ERROR, "Bad sync bytes", EXPFILL }},

        { &ei_simple_length_bad, { "simple.length.bad", PI_MALFORMED, PI_ERROR, "Bad length", EXPFILL }},

        { &ei_simple_packet_size_bad, { "simple.packet_size.bad", PI_MALFORMED, PI_ERROR, "Bad packet length", EXPFILL }},

        { &ei_simple_checksum_bad, { "simple.checksum.bad.expert", PI_CHECKSUM, PI_ERROR, "Bad checksum", EXPFILL }},

    };

    expert_module_t* expert_simple;

    proto_simple = proto_register_protocol("Standard Interface for Multiple Platform Link Evaluation", "SIMPLE", "simple");

    proto_register_field_array(proto_simple, hf, array_length(hf));

    proto_register_subtree_array(ett, array_length(ett));

    expert_simple = expert_register_protocol(proto_simple);

    expert_register_field_array(expert_simple, ei, array_length(ei));

    simple_dissector_handle = register_dissector("simple", dissect_simple, proto_simple);

}

void proto_reg_handoff_simple(void)

{

    dissector_add_for_decode_as_with_preference("udp.port", simple_dissector_handle);

    dissector_add_for_decode_as_with_preference("tcp.port", simple_dissector_handle);

    link16_handle = find_dissector_add_dependency("link16", proto_simple);

}

/*

 * 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:

 */