/* packet-dvb-ait.c

 * Routines for DVB Application Information Table (AIT) dissection

 * Copyright 2012-2013, Martin Kaiser <martin@kaiser.cx>

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

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

 */

/* This dissector processes a DVB Application Information Table (AIT) as

 * defined in ETSI TS 102 809. */

#include "config.h"

#include <epan/packet.h>

#include "packet-mpeg-sect.h"

#include "packet-mpeg-descriptor.h"

void proto_register_dvb_ait(void);

void proto_reg_handoff_dvb_ait(void);

static dissector_handle_t dvb_ait_handle;

static int proto_dvb_ait;

static int ett_dvb_ait;

static int ett_dvb_ait_descr;

static int ett_dvb_ait_app;

static int hf_dvb_ait_test_app_flag;

static int hf_dvb_ait_app_type;

static int hf_dvb_ait_version_number;

static int hf_dvb_ait_current_next_indicator;

static int hf_dvb_ait_section_number;

static int hf_dvb_ait_last_section_number;

static int hf_dvb_ait_descr_loop_len;

static int hf_dvb_ait_descr_tag;

static int hf_dvb_ait_descr_len;

static int hf_dvb_ait_descr_data;

static int hf_dvb_ait_descr_app_prof_len;

static int hf_dvb_ait_descr_app_prof;

static int hf_dvb_ait_descr_app_ver;

static int hf_dvb_ait_descr_app_svc_bound;

static int hf_dvb_ait_descr_app_vis;

static int hf_dvb_ait_descr_app_prio;

static int hf_dvb_ait_descr_app_trpt_proto_label;

static int hf_dvb_ait_descr_app_name_lang;

static int hf_dvb_ait_descr_app_name_name;

static int hf_dvb_ait_descr_trpt_proto_id;

static int hf_dvb_ait_descr_trpt_proto_label;

static int hf_dvb_ait_descr_trpt_sel_remote;

static int hf_dvb_ait_descr_trpt_sel_onid;

static int hf_dvb_ait_descr_trpt_sel_tsid;

static int hf_dvb_ait_descr_trpt_sel_svcid;

static int hf_dvb_ait_descr_trpt_sel_comp;

static int hf_dvb_ait_descr_trpt_sel_url_base;

static int hf_dvb_ait_descr_trpt_sel_url_ext_cnt;

static int hf_dvb_ait_descr_trpt_sel_url_ext;

static int hf_dvb_ait_descr_trpt_sel_bytes;

static int hf_dvb_ait_descr_sal_init_path;

static int hf_dvb_ait_app_loop_len;

static int hf_dvb_ait_org_id;

static int hf_dvb_ait_app_id;

static int hf_dvb_ait_app_ctrl_code;

static const value_string app_ctrl_code[] = {

    { 0x01,  "Autostart" },

    { 0x02,  "Present" },

    { 0x03,  "Destroy" },

    { 0x04,  "Kill" },

    { 0x05,  "Prefetch" },

    { 0x06,  "Remote" },

    { 0x07,  "Disabled" },

    { 0x08,  "Playback autostart" },

    { 0, NULL }

};

/* tags of the descriptors defined in ETSI TS 102 809

   some of these tags are conflicting with MPEG2 or DVB-SI definitions,

    therefore these descriptors aren't supported by packet-mpeg-descriptor.c */

#define AIT_DESCR_APP          0x00

#define AIT_DESCR_APP_NAME     0x01

#define AIT_DESCR_TRPT_PROTO   0x02

#define AIT_DESCR_EXT_APP_AUTH 0x05

#define AIT_DESCR_APP_REC      0x06

#define AIT_DESCR_APP_ICO      0x0B

#define AIT_DESCR_APP_STOR     0x10

#define AIT_DESCR_GRA_CONST    0x14

#define AIT_DESCR_SIM_APP_LOC  0x15

#define AIT_DESCR_SIM_APP_BND  0x17

#define AIT_DESCR_APP_SIG      0x6F

static const value_string ait_descr_tag[] = {

    { AIT_DESCR_APP,          "Application descriptor" },

    { AIT_DESCR_APP_NAME,     "Application name descriptor" },

    { AIT_DESCR_TRPT_PROTO,   "Transport protocol descriptor" },

    { AIT_DESCR_EXT_APP_AUTH, "External application authorization descriptor" },

    { AIT_DESCR_APP_REC,      "Application recording descriptor" },

    { AIT_DESCR_APP_ICO,      "Application icons descriptor" },

    { AIT_DESCR_APP_STOR,     "Application storage descriptor" },

    { AIT_DESCR_GRA_CONST,    "Graphics constraints descriptor" },

    { AIT_DESCR_SIM_APP_LOC,  "Simple application location descriptor" },

    { AIT_DESCR_SIM_APP_BND,  "Simple application boundary descriptor" },

    { AIT_DESCR_APP_SIG,      "Application signalling descriptor" },

    { 0, NULL }

};

#define TRPT_OBJ_CAROUSEL 0x0001

#define TRPT_HTTP         0x0003

static const value_string trpt_proto_id[] = {

    { TRPT_OBJ_CAROUSEL, "Object Carousel" },

    { TRPT_HTTP,         "Transport via HTTP" },

    { 0, NULL }

};

static const value_string app_vis[] = {

    { 0x0, "not visible" },

    { 0x1, "not visible to users, only to applications" },

    { 0x3, "fully visible" },

    { 0, NULL }

};

/* dissect the body of an application_descriptor

   offset points to the start of the body,

   i.e. to the first byte after the length field */

static int

dissect_dvb_ait_app_desc_body(tvbuff_t *tvb, unsigned offset,

        uint8_t body_len, packet_info *pinfo _U_, proto_tree *tree)

{

    unsigned   offset_start, offset_app_prof_start;

    uint8_t app_prof_len;

    uint8_t ver_maj, ver_min, ver_mic;

    offset_start = offset;

    app_prof_len = tvb_get_uint8(tvb, offset);

    proto_tree_add_item(tree, hf_dvb_ait_descr_app_prof_len,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    offset_app_prof_start = offset;

    while (offset-offset_app_prof_start < app_prof_len) {

        proto_tree_add_item(tree, hf_dvb_ait_descr_app_prof,

                tvb, offset, 2, ENC_BIG_ENDIAN);

        offset += 2;

        ver_maj = tvb_get_uint8(tvb, offset);

        ver_min = tvb_get_uint8(tvb, offset+1);

        ver_mic = tvb_get_uint8(tvb, offset+2);

        proto_tree_add_uint_format(tree, hf_dvb_ait_descr_app_ver,

                tvb, offset, 3, ver_maj<<16|ver_min<<8|ver_mic,

                "Version %d.%d.%d", ver_maj, ver_min, ver_mic);

        offset += 3;

    }

    proto_tree_add_item(tree, hf_dvb_ait_descr_app_svc_bound,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    proto_tree_add_item(tree, hf_dvb_ait_descr_app_vis,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    proto_tree_add_item(tree, hf_dvb_ait_descr_app_prio,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    while (offset-offset_start < body_len) {

        proto_tree_add_item(tree, hf_dvb_ait_descr_app_trpt_proto_label,

                tvb, offset, 1, ENC_BIG_ENDIAN);

        offset++;

    }

    return (int)(offset-offset_start);

}

static int

dissect_dvb_ait_app_name_desc_body(tvbuff_t *tvb, unsigned offset,

        uint8_t body_len, packet_info *pinfo _U_, proto_tree *tree)

{

    unsigned   offset_start;

    uint8_t len;

    offset_start = offset;

    while (offset-offset_start < body_len) {

        proto_tree_add_item(tree, hf_dvb_ait_descr_app_name_lang,

              tvb, offset, 3, ENC_ASCII);

        offset += 3;

        len = tvb_get_uint8(tvb, offset);

          /* FT_UINT_STRING with 1 leading len byte */

          proto_tree_add_item(tree, hf_dvb_ait_descr_app_name_name,

              tvb, offset, 1, ENC_ASCII|ENC_BIG_ENDIAN);

          offset += 1+len;

    }

    return (int)(offset-offset_start);

}

static int

dissect_dvb_ait_trpt_proto_desc_body(tvbuff_t *tvb, unsigned offset,

        uint8_t body_len, packet_info *pinfo _U_, proto_tree *tree)

{

    unsigned  offset_start;

    uint16_t  proto_id;

    bool      remote_connection;

    offset_start = offset;

    proto_id = tvb_get_ntohs(tvb, offset);

    proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_proto_id,

            tvb, offset, 2, ENC_BIG_ENDIAN);

    offset += 2;

    proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_proto_label,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    if (offset-offset_start < body_len) {

        if (proto_id == TRPT_OBJ_CAROUSEL) {

            remote_connection = ((tvb_get_uint8(tvb, offset) & 0x80) == 0x80);

            proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_sel_remote,

                tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            if (remote_connection) {

                proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_sel_onid,

                        tvb, offset, 2, ENC_BIG_ENDIAN);

                offset += 2;

                proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_sel_tsid,

                        tvb, offset, 2, ENC_BIG_ENDIAN);

                offset += 2;

                proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_sel_svcid,

                        tvb, offset, 2, ENC_BIG_ENDIAN);

                offset += 2;

            }

            proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_sel_comp,

                    tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

        }

        else if (proto_id == TRPT_HTTP) {

            uint8_t url_base_len, url_ext_cnt, url_ext_len, i;

            url_base_len = tvb_get_uint8(tvb, offset);

            /* FT_UINT_STRING with one leading length byte */

            proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_sel_url_base,

                tvb, offset, 1, ENC_ASCII|ENC_BIG_ENDIAN);

            offset += 1+url_base_len;

            url_ext_cnt = tvb_get_uint8(tvb, offset);

            proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_sel_url_ext_cnt,

                tvb, offset, 1, ENC_BIG_ENDIAN);

            offset++;

            for (i=0; i<url_ext_cnt; i++) {

                url_ext_len = tvb_get_uint8(tvb, offset);

                proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_sel_url_ext,

                        tvb, offset, 1, ENC_ASCII|ENC_BIG_ENDIAN);

                offset += 1+url_ext_len;

            }

        }

        else {

            proto_tree_add_item(tree, hf_dvb_ait_descr_trpt_sel_bytes,

                tvb, offset, offset_start+body_len-offset, ENC_NA);

            offset = offset_start+body_len;

        }

    }

    return (int)(offset-offset_start);

}

static int

dissect_dvb_ait_descriptor(tvbuff_t *tvb, unsigned offset,

        packet_info *pinfo, proto_tree *tree)

{

    int         ret;

    unsigned    offset_start;

    uint8_t     tag, len;

    proto_tree *descr_tree;

    tag = tvb_get_uint8(tvb, offset);

    len = tvb_get_uint8(tvb, offset+1);

    /* if the descriptor is a special one that's defined in ETSI TS 102 809,

        we dissect it ourselves

       otherwise, we assume it's a generic DVB-SI descriptor and pass it

        on to packet-mpeg-descriptor */

    if (try_val_to_str(tag, ait_descr_tag)) {

        offset_start = offset;

        descr_tree = proto_tree_add_subtree_format(tree, tvb, offset_start, len+2,

                ett_dvb_ait_descr, NULL, "Descriptor Tag=0x%02x", tag);

        proto_tree_add_item(descr_tree, hf_dvb_ait_descr_tag,

                tvb, offset, 1, ENC_BIG_ENDIAN);

        offset++;

        proto_tree_add_item(descr_tree, hf_dvb_ait_descr_len,

                tvb, offset, 1, ENC_BIG_ENDIAN);

        offset++;

        switch (tag) {

            case AIT_DESCR_APP:

                ret = dissect_dvb_ait_app_desc_body(tvb, offset, len,

                        pinfo, descr_tree);

                if (ret>0)

                    offset += ret;

                break;

            case AIT_DESCR_APP_NAME:

                ret = dissect_dvb_ait_app_name_desc_body(tvb, offset, len,

                        pinfo, descr_tree);

                if (ret>0)

                    offset += ret;

                break;

            case AIT_DESCR_TRPT_PROTO:

                ret = dissect_dvb_ait_trpt_proto_desc_body(tvb, offset, len,

                        pinfo, descr_tree);

                if (ret>0)

                    offset += ret;

                break;

            case AIT_DESCR_SIM_APP_LOC:

                proto_tree_add_item(descr_tree,

                        hf_dvb_ait_descr_sal_init_path,

                        tvb, offset, len, ENC_ASCII);

                offset += len;

                break;

            default:

                proto_tree_add_item(descr_tree, hf_dvb_ait_descr_data,

                        tvb, offset, len, ENC_NA);

                offset += len;

                break;

        }

        ret = (int)(offset-offset_start);

    }

    else

        ret = (int)proto_mpeg_descriptor_dissect(tvb, pinfo, offset, tree);

    return ret;

}

static int

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

{

    int         offset=0;

    proto_item *ait_tree_ti = NULL, *app_tree_ti = NULL;

    proto_tree *ait_tree = NULL, *ait_app_tree = NULL;

    int         offset_loop_start, offset_inner_loop_start, offset_app_start;

    uint16_t    descr_loop_len, app_loop_len;

    int         ret;

    uint32_t    org_id;

    uint16_t    app_id;

    col_set_str(pinfo->cinfo, COL_INFO, "Application Information Table (AIT)");

    if (tree) {

        ait_tree_ti = proto_tree_add_protocol_format(tree, proto_dvb_ait,

                tvb, 0, -1, "Application Information Table (AIT)");

        ait_tree = proto_item_add_subtree(ait_tree_ti, ett_dvb_ait);

    }

    offset += packet_mpeg_sect_header(tvb, offset, ait_tree, NULL, NULL);

    proto_tree_add_item(ait_tree, hf_dvb_ait_test_app_flag,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    proto_tree_add_item(ait_tree, hf_dvb_ait_app_type,

            tvb, offset, 2, ENC_BIG_ENDIAN);

    offset += 2;

    /* no hf for reserved bits */

    proto_tree_add_item(ait_tree, hf_dvb_ait_version_number,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    proto_tree_add_item(ait_tree, hf_dvb_ait_current_next_indicator,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    proto_tree_add_item(ait_tree, hf_dvb_ait_section_number,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    proto_tree_add_item(ait_tree, hf_dvb_ait_last_section_number,

            tvb, offset, 1, ENC_BIG_ENDIAN);

    offset++;

    descr_loop_len = tvb_get_ntohs(tvb, offset) & 0x0FFF;

    proto_tree_add_item(ait_tree, hf_dvb_ait_descr_loop_len,

            tvb, offset, 2, ENC_BIG_ENDIAN);

    offset += 2;

    offset_loop_start = offset;

    while (offset-offset_loop_start < descr_loop_len) {

        ret = dissect_dvb_ait_descriptor(tvb, offset, pinfo, ait_tree);

        if (ret<=0)

            break;

        offset += ret;

    }

    app_loop_len = tvb_get_ntohs(tvb, offset) & 0x0FFF;

    proto_tree_add_item(ait_tree, hf_dvb_ait_app_loop_len,

            tvb, offset, 2, ENC_BIG_ENDIAN);

    offset += 2;

    offset_loop_start = offset;

    while (offset-offset_loop_start < app_loop_len) {

        offset_app_start = offset;

        org_id = tvb_get_ntohl(tvb, offset);

        app_id = tvb_get_ntohs(tvb, offset+4);

        ait_app_tree = proto_tree_add_subtree_format(ait_tree, tvb, offset, -1,

                ett_dvb_ait_app, &app_tree_ti, "Application: Org 0x%x, App 0x%x", org_id, app_id);

        proto_tree_add_item(ait_app_tree, hf_dvb_ait_org_id,

            tvb, offset, 4, ENC_BIG_ENDIAN);

        offset += 4;

        proto_tree_add_item(ait_app_tree, hf_dvb_ait_app_id,

            tvb, offset, 2, ENC_BIG_ENDIAN);

        offset += 2;

        proto_tree_add_item(ait_app_tree, hf_dvb_ait_app_ctrl_code,

            tvb, offset, 1, ENC_BIG_ENDIAN);

        offset++;

        descr_loop_len = tvb_get_ntohs(tvb, offset) & 0x0FFF;

        proto_tree_add_item(ait_app_tree, hf_dvb_ait_descr_loop_len,

                tvb, offset, 2, ENC_BIG_ENDIAN);

        offset += 2;

        offset_inner_loop_start = offset;

        while (offset-offset_inner_loop_start < descr_loop_len) {

            ret = dissect_dvb_ait_descriptor(tvb, offset, pinfo, ait_app_tree);

            if (ret<=0)

                break;

            offset += ret;

        }

        proto_item_set_len(app_tree_ti, offset-offset_app_start);

    }

    offset += packet_mpeg_sect_crc(tvb, pinfo, ait_tree, 0, offset);

    proto_item_set_len(ait_tree_ti, offset);

    return offset;

}

void

proto_register_dvb_ait(void)

{

    static int *ett[] = {

        &ett_dvb_ait,

        &ett_dvb_ait_descr,

        &ett_dvb_ait_app

    };

    static hf_register_info hf[] = {

        { &hf_dvb_ait_test_app_flag,

          { "Test application flag", "dvb_ait.test_app_flag",

            FT_UINT8, BASE_HEX, NULL, 0x80, NULL, HFILL } },

        { &hf_dvb_ait_app_type,

          { "Application type", "dvb_ait.app_type",

            FT_UINT16, BASE_HEX, NULL, 0x7FFF, NULL, HFILL } },

        { &hf_dvb_ait_version_number,

            { "Version Number", "dvb_ait.version",

                FT_UINT8, BASE_HEX, NULL, 0x3E, NULL, HFILL } },

        { &hf_dvb_ait_current_next_indicator,

            { "Current/Next Indicator", "dvb_ait.cur_next_ind",

                FT_UINT8, BASE_DEC, NULL, 0x01, NULL, HFILL } },

        { &hf_dvb_ait_section_number,

            { "Section Number", "dvb_ait.sect_num",

                FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_last_section_number,

            { "Last Section Number", "dvb_ait.last_sect_num",

                FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_loop_len,

          { "Descriptor loop length", "dvb_ait.descr_loop_len",

            FT_UINT16, BASE_DEC, NULL, 0x0FFF, NULL, HFILL } },

        { &hf_dvb_ait_descr_tag,

            { "Descriptor Tag", "dvb_ait.descr.tag",

                FT_UINT8, BASE_HEX, VALS(ait_descr_tag), 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_len,

            { "Descriptor Length", "dvb_ait.descr.len",

                FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_data,

            { "Descriptor Data", "dvb_ait.descr.data",

                FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_app_prof_len,

            { "Application profiles length", "dvb_ait.descr.app.prof_len",

                FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_app_prof,

            { "Application profile", "dvb_ait.descr.app.prof",

                FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } },

        /* version is major|minor|micro */

        { &hf_dvb_ait_descr_app_ver,

            { "Version", "dvb_ait.descr.app.ver",

                FT_UINT24, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_app_svc_bound,

            { "Service-bound flag", "dvb_ait.descr.app.svc_bound_flag",

                FT_UINT8, BASE_HEX, NULL, 0x80, NULL, HFILL } },

        { &hf_dvb_ait_descr_app_vis,

            { "Visibility", "dvb_ait.descr.app.visibility",

                FT_UINT8, BASE_HEX, VALS(app_vis), 0x60, NULL, HFILL } },

        { &hf_dvb_ait_descr_app_prio,

            { "Application priority", "dvb_ait.descr.app.prio",

                FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_app_trpt_proto_label,

            { "Transport protocol label", "dvb_ait.descr.app.trpt_proto_label",

                FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_app_name_lang,

          { "ISO 639 language code", "dvb_ait.descr.app_name.lang",

            FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_app_name_name,

          { "Application name", "dvb_ait.descr.app_name.name",

            FT_UINT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_proto_id,

            { "Protocol ID", "dvb_ait.descr.trpt_proto.id",

                FT_UINT16, BASE_HEX, VALS(trpt_proto_id), 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_proto_label,

            { "Transport protocol label", "dvb_ait.descr.trpt_proto.label",

                FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_sel_remote,

            { "Remote connection", "dvb_ait.descr.trpt_proto.remote",

                FT_UINT8, BASE_HEX, NULL, 0x80, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_sel_onid,

            { "Original network ID", "dvb_ait.descr.trpt_proto.onid",

                FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_sel_tsid,

            { "Transport stream ID", "dvb_ait.descr.trpt_proto.tsid",

                FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_sel_svcid,

            { "Service ID", "dvb_ait.descr.trpt_proto.svcid",

                FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_sel_comp,

            { "Component tag", "dvb_ait.descr.trpt_proto.comp_tag",

                FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_sel_url_base,

            { "URL base", "dvb_ait.descr.trpt_proto.url_base",

            FT_UINT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_sel_url_ext_cnt,

            { "URL extension count", "dvb_ait.descr.trpt_proto.url_ext_cnt",

                FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_sel_url_ext,

            { "URL extension", "dvb_ait.descr.trpt_proto.url_ext",

            FT_UINT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_trpt_sel_bytes,

            { "Selector bytes", "dvb_ait.descr.trpt_proto.selector_bytes",

                FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_descr_sal_init_path,

            { "Initial path", "dvb_ait.descr.sim_app_loc.initial_path",

            FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_app_loop_len,

          { "Application loop length", "dvb_ait.app_loop_len",

            FT_UINT16, BASE_DEC, NULL, 0x0FFF, NULL, HFILL } },

        { &hf_dvb_ait_org_id,

            { "Organisation ID", "dvb_ait.app.org_id",

                FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_app_id,

            { "Application ID", "dvb_ait.app.app_id",

                FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } },

        { &hf_dvb_ait_app_ctrl_code,

            { "Application control code", "dvb_ait.app.ctrl_code",

                FT_UINT8, BASE_HEX, VALS(app_ctrl_code), 0, NULL, HFILL } }

    };

    proto_dvb_ait = proto_register_protocol("DVB Application Information Table", "DVB AIT", "dvb_ait");

    proto_register_field_array(proto_dvb_ait, hf, array_length(hf));

    proto_register_subtree_array(ett, array_length(ett));

    dvb_ait_handle = register_dissector("dvb_ait", dissect_dvb_ait, proto_dvb_ait);

}

void

proto_reg_handoff_dvb_ait(void)

{

    dissector_add_uint("mpeg_sect.tid", DVB_AIT_TID, dvb_ait_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:

 */