text: /* 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
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License along
   * with this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
   */
  
  /* 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 int proto_dvb_ait = -1;
  
  static gint ett_dvb_ait       = -1;
  static gint ett_dvb_ait_descr = -1;
  static gint ett_dvb_ait_app   = -1;
  
  static int hf_dvb_ait_test_app_flag = -1;
  static int hf_dvb_ait_app_type = -1;
  static int hf_dvb_ait_version_number = -1;
  static int hf_dvb_ait_current_next_indicator = -1;
  static int hf_dvb_ait_section_number = -1;
  static int hf_dvb_ait_last_section_number = -1;
  static int hf_dvb_ait_descr_loop_len = -1;
  static int hf_dvb_ait_descr_tag = -1;
  static int hf_dvb_ait_descr_len = -1;
  static int hf_dvb_ait_descr_data = -1;
  static int hf_dvb_ait_descr_app_prof_len = -1;
  static int hf_dvb_ait_descr_app_prof = -1;
  static int hf_dvb_ait_descr_app_ver = -1;
  static int hf_dvb_ait_descr_app_svc_bound = -1;
  static int hf_dvb_ait_descr_app_vis = -1;
  static int hf_dvb_ait_descr_app_prio = -1;
  static int hf_dvb_ait_descr_app_trpt_proto_label = -1;
  static int hf_dvb_ait_descr_app_name_lang = -1;
  static int hf_dvb_ait_descr_app_name_name = -1;
  static int hf_dvb_ait_descr_trpt_proto_id = -1;
  static int hf_dvb_ait_descr_trpt_proto_label = -1;
  static int hf_dvb_ait_descr_trpt_sel_remote = -1;
  static int hf_dvb_ait_descr_trpt_sel_onid = -1;
  static int hf_dvb_ait_descr_trpt_sel_tsid = -1;
  static int hf_dvb_ait_descr_trpt_sel_svcid = -1;
  static int hf_dvb_ait_descr_trpt_sel_comp = -1;
  static int hf_dvb_ait_descr_trpt_sel_url_base = -1;
  static int hf_dvb_ait_descr_trpt_sel_url_ext_cnt = -1;
  static int hf_dvb_ait_descr_trpt_sel_url_ext = -1;
  static int hf_dvb_ait_descr_trpt_sel_bytes = -1;
  static int hf_dvb_ait_descr_sal_init_path = -1;
  static int hf_dvb_ait_app_loop_len = -1;
  static int hf_dvb_ait_org_id = -1;
  static int hf_dvb_ait_app_id = -1;
  static int hf_dvb_ait_app_ctrl_code = -1;
  
  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 gint
  dissect_dvb_ait_app_desc_body(tvbuff_t *tvb, guint offset,
          guint8 body_len, packet_info *pinfo _U_, proto_tree *tree)
  {
      guint   offset_start, offset_app_prof_start;
      guint8  app_prof_len;
      guint8  ver_maj, ver_min, ver_mic;
  
      offset_start = offset;
  
      app_prof_len = tvb_get_guint8(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_guint8(tvb, offset);
          ver_min = tvb_get_guint8(tvb, offset+1);
          ver_mic = tvb_get_guint8(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 (gint)(offset-offset_start);
  }
  
  
  static gint
  dissect_dvb_ait_app_name_desc_body(tvbuff_t *tvb, guint offset,
          guint8 body_len, packet_info *pinfo _U_, proto_tree *tree)
  {
      guint   offset_start;
      guint8  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|ENC_NA);
          offset += 3;
          len = tvb_get_guint8(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 (gint)(offset-offset_start);
  }
  
  
  static gint
  dissect_dvb_ait_trpt_proto_desc_body(tvbuff_t *tvb, guint offset,
          guint8 body_len, packet_info *pinfo _U_, proto_tree *tree)
  {
      guint     offset_start;
      guint16   proto_id;
      gboolean  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_guint8(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) {
              guint8 url_base_len, url_ext_cnt, url_ext_len, i;
  
              url_base_len = tvb_get_guint8(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_guint8(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_guint8(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 (gint)(offset-offset_start);
  }
  
  
  static gint
  dissect_dvb_ait_descriptor(tvbuff_t *tvb, guint offset,
          packet_info *pinfo, proto_tree *tree)
  {
      gint        ret;
      guint       offset_start;
      guint8      tag, len;
      proto_tree *descr_tree;
  
      tag = tvb_get_guint8(tvb, offset);
      len = tvb_get_guint8(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|ENC_NA);
                  offset += len;
                  break;
              default:
                  proto_tree_add_item(descr_tree, hf_dvb_ait_descr_data,
                          tvb, offset, len, ENC_NA);
                  offset += len;
                  break;
          }
  
          ret = (gint)(offset-offset_start);
      }
      else
          ret = (gint)proto_mpeg_descriptor_dissect(tvb, offset, tree);
  
      return ret;
  }
  
  
  static int
  dissect_dvb_ait(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
  {
      gint        offset=0;
      proto_item *ait_tree_ti = NULL, *app_tree_ti = NULL;
      proto_tree *ait_tree = NULL, *ait_app_tree = NULL;
      gint        offset_loop_start, offset_inner_loop_start, offset_app_start;
      guint16     descr_loop_len, app_loop_len;
      gint        ret;
      guint32     org_id;
      guint16     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 gint *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));
  }
  
  
  void
  proto_reg_handoff_dvb_ait(void)
  {
      dissector_handle_t dvb_ait_handle;
  
      dvb_ait_handle = new_create_dissector_handle(dissect_dvb_ait, proto_dvb_ait);
      dissector_add_uint("mpeg_sect.tid", DVB_AIT_TID, dvb_ait_handle);
  }
  
  /*
   * Editor modelines  -  http://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:
   */
  