epan/dissectors/packet-dvb-tdt.c

   1 /* packet-dvb-tdt.c
   2  * Routines for DVB (ETSI EN 300 468) Time and Date Table (TDT) dissection
   3  * Copyright 2012, Guy Martin <gmsoft@tuxicoman.be>
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, write to the Free Software Foundation, Inc.,
  23  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "config.h"
  27
  28 #include <glib.h>
  29
  30 #include <epan/packet.h>
  31 #include <epan/dissectors/packet-mpeg-sect.h>
  32
  33 void proto_register_dvb_tdt(void);
  34 void proto_reg_handoff_dvb_tdt(void);
  35
  36 static int proto_dvb_tdt = -1;
  37 static int hf_dvb_tdt_utc_time = -1;
  38
  39 static gint ett_dvb_tdt = -1;
  40
  41 #define DVB_TDT_TID 0x70
  42
  43 static void
  44 dissect_dvb_tdt(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
  45 {
  46
  47     guint offset = 0;
  48
  49     proto_item *ti;
  50     proto_tree *dvb_tdt_tree;
  51
  52     nstime_t    utc_time;
  53
  54     col_set_str(pinfo->cinfo, COL_INFO, "Time and Date Table (TDT)");
  55
  56     ti = proto_tree_add_item(tree, proto_dvb_tdt, tvb, offset, -1, ENC_NA);
  57     dvb_tdt_tree = proto_item_add_subtree(ti, ett_dvb_tdt);
  58
  59     offset += packet_mpeg_sect_header(tvb, offset, dvb_tdt_tree, NULL, NULL);
  60
  61     if (packet_mpeg_sect_mjd_to_utc_time(tvb, offset, &utc_time) < 0) {
  62         proto_tree_add_text(dvb_tdt_tree, tvb, offset, 5, "Unparseable time");
  63     } else {
  64         proto_tree_add_time(dvb_tdt_tree, hf_dvb_tdt_utc_time, tvb, offset, 5, &utc_time);
  65     }
  66     offset += 5;
  67
  68     proto_item_set_len(ti, offset);
  69 }
  70
  71
  72 void
  73 proto_register_dvb_tdt(void)
  74 {
  75
  76     static hf_register_info hf[] = {
  77
  78         { &hf_dvb_tdt_utc_time, {
  79             "UTC Time", "dvb_tdt.utc_time",
  80             FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0, NULL, HFILL
  81         } }
  82     };
  83
  84     static gint *ett[] = {
  85         &ett_dvb_tdt
  86     };
  87
  88     proto_dvb_tdt = proto_register_protocol("DVB Time and Date Table", "DVB TDT", "dvb_tdt");
  89
  90     proto_register_field_array(proto_dvb_tdt, hf, array_length(hf));
  91     proto_register_subtree_array(ett, array_length(ett));
  92
  93 }
  94
  95
  96 void proto_reg_handoff_dvb_tdt(void)
  97 {
  98     dissector_handle_t dvb_tdt_handle;
  99
 100     dvb_tdt_handle = create_dissector_handle(dissect_dvb_tdt, proto_dvb_tdt);
 101
 102     dissector_add_uint("mpeg_sect.tid", DVB_TDT_TID, dvb_tdt_handle);
 103 }
 104
 105 /*
 106  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 107  *
 108  * Local variables:
 109  * c-basic-offset: 4
 110  * tab-width: 8
 111  * indent-tabs-mode: nil
 112  * End:
 113  *
 114  * vi: set shiftwidth=4 tabstop=8 expandtab:
 115  * :indentSize=4:tabSize=8:noTabs=true:
 116  */