786c604ad0
This patch adds support for the DVB Bouquet Association Table (BAT) from ETSI EN 300 468. With this last patch, the support for the DVB SI table is quite complete. svn path=/trunk/; revision=41836
278 lines
8.6 KiB
C
278 lines
8.6 KiB
C
/* packet-dvb-bat.c
|
|
* Routines for DVB (ETSI EN 300 468) Bouquet Association Table (BAT) dissection
|
|
* Copyright 2012, Guy Martin <gmsoft@tuxicoman.be>
|
|
*
|
|
* $Id$
|
|
*
|
|
* 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; bather 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <glib.h>
|
|
|
|
#include <epan/packet.h>
|
|
#include <epan/dissectors/packet-mpeg-sect.h>
|
|
|
|
#include "packet-mpeg-descriptor.h"
|
|
|
|
static int proto_dvb_bat = -1;
|
|
static int hf_dvb_bat_bouquet_id = -1;
|
|
static int hf_dvb_bat_reserved1 = -1;
|
|
static int hf_dvb_bat_version_number = -1;
|
|
static int hf_dvb_bat_current_next_indicator = -1;
|
|
static int hf_dvb_bat_section_number = -1;
|
|
static int hf_dvb_bat_last_section_number = -1;
|
|
|
|
static int hf_dvb_bat_reserved2 = -1;
|
|
static int hf_dvb_bat_bouquet_descriptors_length = -1;
|
|
|
|
static int hf_dvb_bat_reserved3 = -1;
|
|
static int hf_dvb_bat_transport_stream_loop_length = -1;
|
|
|
|
static int hf_dvb_bat_transport_stream_id = -1;
|
|
static int hf_dvb_bat_original_network_id = -1;
|
|
static int hf_dvb_bat_reserved4 = -1;
|
|
static int hf_dvb_bat_transport_descriptors_length = -1;
|
|
|
|
static gint ett_dvb_bat = -1;
|
|
static gint ett_dvb_bat_transport_stream = -1;
|
|
|
|
|
|
#define DVB_BAT_TID 0x4A
|
|
|
|
#define DVB_BAT_RESERVED1_MASK 0xC0
|
|
#define DVB_BAT_VERSION_NUMBER_MASK 0x3E
|
|
#define DVB_BAT_CURRENT_NEXT_INDICATOR_MASK 0x01
|
|
|
|
#define DVB_BAT_RESERVED2_MASK 0xF000
|
|
#define DVB_BAT_BOUQUET_DESCRIPTORS_LENGTH_MASK 0x0FFF
|
|
|
|
#define DVB_BAT_RESERVED3_MASK 0xF000
|
|
#define DVB_BAT_TRANSPORT_STREAM_LOOP_LENGTH_MASK 0x0FFF
|
|
|
|
#define DVB_BAT_RESERVED4_MASK 0xF000
|
|
#define DVB_BAT_TRANSPORT_DESCRIPTORS_LENGTH_MASK 0x0FFF
|
|
|
|
static const value_string dvb_bat_cur_next_vals[] = {
|
|
{ 0, "Not yet applicable" },
|
|
{ 1, "Currently applicable" },
|
|
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string dvb_bat_running_status_vals[] = {
|
|
{ 0, "Undefined" },
|
|
{ 1, "Not Running" },
|
|
{ 2, "Starts in a few seconds" },
|
|
{ 3, "Pausing" },
|
|
{ 4, "Running" },
|
|
{ 5, "Service off-air" },
|
|
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string dvb_bat_free_ca_mode_vals[] = {
|
|
{ 0, "Not Scrambled" },
|
|
{ 1, "One or more component scrambled" },
|
|
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static void
|
|
dissect_dvb_bat(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
|
|
guint offset = 0, length = 0, descriptor_end = 0, ts_loop_end = 0;
|
|
guint16 ts_id = 0, descriptor_len = 0, ts_loop_len = 0;
|
|
|
|
proto_item *ti = NULL;
|
|
proto_tree *dvb_bat_tree = NULL;
|
|
proto_item *tsi = NULL;
|
|
proto_tree *transport_stream_tree = NULL;
|
|
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Bouquet Association Table (BAT)");
|
|
|
|
if (!tree)
|
|
return;
|
|
|
|
ti = proto_tree_add_item(tree, proto_dvb_bat, tvb, offset, -1, ENC_NA);
|
|
dvb_bat_tree = proto_item_add_subtree(ti, ett_dvb_bat);
|
|
|
|
offset += packet_mpeg_sect_header(tvb, offset, dvb_bat_tree, &length, NULL);
|
|
length -= 4;
|
|
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_bouquet_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_reserved1, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_version_number, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_current_next_indicator, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_section_number, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_last_section_number, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
descriptor_len = tvb_get_ntohs(tvb, offset) & DVB_BAT_BOUQUET_DESCRIPTORS_LENGTH_MASK;
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_reserved2, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_bouquet_descriptors_length, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
descriptor_end = offset + descriptor_len;
|
|
while (offset < descriptor_end)
|
|
offset += proto_mpeg_descriptor_dissect(tvb, offset, dvb_bat_tree);
|
|
|
|
ts_loop_len = tvb_get_ntohs(tvb, offset) & DVB_BAT_TRANSPORT_STREAM_LOOP_LENGTH_MASK;
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_reserved3, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(dvb_bat_tree, hf_dvb_bat_transport_stream_loop_length, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
ts_loop_end = offset + ts_loop_len;
|
|
while (offset < ts_loop_end) {
|
|
ts_id = tvb_get_ntohs(tvb, offset);
|
|
descriptor_len = tvb_get_ntohs(tvb, offset + 4) & DVB_BAT_TRANSPORT_DESCRIPTORS_LENGTH_MASK;
|
|
|
|
tsi = proto_tree_add_text(dvb_bat_tree, tvb, offset, 6 + descriptor_len, "Transport Stream 0x%04x", ts_id);
|
|
transport_stream_tree = proto_item_add_subtree(tsi, ett_dvb_bat_transport_stream);
|
|
|
|
proto_tree_add_item(transport_stream_tree, hf_dvb_bat_transport_stream_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(transport_stream_tree, hf_dvb_bat_original_network_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(transport_stream_tree, hf_dvb_bat_reserved4, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(transport_stream_tree, hf_dvb_bat_transport_descriptors_length, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
descriptor_end = offset + descriptor_len;
|
|
while (offset < descriptor_end)
|
|
offset += proto_mpeg_descriptor_dissect(tvb, offset, transport_stream_tree);
|
|
}
|
|
|
|
packet_mpeg_sect_crc(tvb, pinfo, dvb_bat_tree, 0, offset);
|
|
}
|
|
|
|
|
|
void
|
|
proto_register_dvb_bat(void)
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &hf_dvb_bat_bouquet_id, {
|
|
"Service ID", "dvb_bat.sid",
|
|
FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_reserved1, {
|
|
"Reserved", "dvb_bat.reserved1",
|
|
FT_UINT8, BASE_HEX, NULL, DVB_BAT_RESERVED1_MASK, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_version_number, {
|
|
"Version Number", "dvb_bat.version",
|
|
FT_UINT8, BASE_HEX, NULL, DVB_BAT_VERSION_NUMBER_MASK, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_current_next_indicator, {
|
|
"Current/Next Indicator", "dvb_bat.cur_next_ind",
|
|
FT_UINT8, BASE_DEC, VALS(dvb_bat_cur_next_vals), DVB_BAT_CURRENT_NEXT_INDICATOR_MASK, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_section_number, {
|
|
"Section Number", "dvb_bat.sect_num",
|
|
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_last_section_number, {
|
|
"Last Section Number", "dvb_bat.last_sect_num",
|
|
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_reserved2, {
|
|
"Reserved", "dvb_bat.reserved2",
|
|
FT_UINT16, BASE_HEX, NULL, DVB_BAT_RESERVED2_MASK, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_bouquet_descriptors_length, {
|
|
"Bouquet Descriptors Length", "dvb_bat.bouquet_desc_len",
|
|
FT_UINT16, BASE_DEC, NULL, DVB_BAT_BOUQUET_DESCRIPTORS_LENGTH_MASK, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_reserved3, {
|
|
"Reserved", "dvb_bat.reserved3",
|
|
FT_UINT16, BASE_HEX, NULL, DVB_BAT_RESERVED3_MASK, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_transport_stream_loop_length, {
|
|
"Transport Stream Loop Length", "dvb_bat.ts_loop_len",
|
|
FT_UINT16, BASE_DEC, NULL, DVB_BAT_TRANSPORT_STREAM_LOOP_LENGTH_MASK, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_transport_stream_id, {
|
|
"Transport Stream ID", "dvb_bat.ts.id",
|
|
FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_original_network_id, {
|
|
"Original Network ID", "dvb_bat.ts.original_nid",
|
|
FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_reserved4, {
|
|
"Reserved", "dvb_bat.ts.reserved",
|
|
FT_UINT16, BASE_HEX, NULL, DVB_BAT_RESERVED4_MASK, NULL, HFILL
|
|
} },
|
|
|
|
{ &hf_dvb_bat_transport_descriptors_length, {
|
|
"Bouquet Descriptors Length", "dvb_bat.ts.desc_len",
|
|
FT_UINT16, BASE_DEC, NULL, DVB_BAT_BOUQUET_DESCRIPTORS_LENGTH_MASK, NULL, HFILL
|
|
} },
|
|
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_dvb_bat,
|
|
&ett_dvb_bat_transport_stream
|
|
};
|
|
|
|
proto_dvb_bat = proto_register_protocol("DVB Bouquet Association Table", "DVB BAT", "dvb_bat");
|
|
|
|
proto_register_field_array(proto_dvb_bat, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
}
|
|
|
|
|
|
void proto_reg_handoff_dvb_bat(void)
|
|
{
|
|
dissector_handle_t dvb_bat_handle;
|
|
|
|
dvb_bat_handle = create_dissector_handle(dissect_dvb_bat, proto_dvb_bat);
|
|
|
|
dissector_add_uint("mpeg_sect.tid", DVB_BAT_TID, dvb_bat_handle);
|
|
}
|