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wireshark/epan/dissectors/packet-vcdu.c
Michael Mann 2eb7b05b8c Convert most UDP dissectors to use "auto" preferences. 
Similar to the "tcp.port" changes in I99604f95d426ad345f4b494598d94178b886eb67,
convert dissectors that use "udp.port".

More cleanup done on dissectors that use both TCP and UDP dissector
tables, so that less preference callbacks exist.

Change-Id: If07be9b9e850c244336a7069599cd554ce312dd3
Reviewed-on: https://code.wireshark.org/review/18120
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
2016-10-13 02:51:18 +00:00

688 lines
23 KiB
C
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/* packet-vcdu.c
* Routines for VCDU dissection
* Copyright 2000, Scott Hovis scott.hovis@ums.msfc.nasa.gov
* Enhanced 2008, Matt Dunkle Matthew.L.Dunkle@nasa.gov
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.com>
* 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.
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/expert.h>
#include <epan/prefs.h>
#include <epan/to_str.h>
#include <epan/uat.h>
void proto_register_vcdu(void);
void proto_reg_handoff_vcdu(void);
/* Initialize the protocol and registered fields */
static int proto_vcdu = -1;
static int hf_smex_gsc = -1;
/* static int hf_smex_unused = -1; */
static int hf_smex_version = -1;
static int hf_smex_framelen = -1;
static int hf_smex_rs_error = -1;
static int hf_smex_rs_enable = -1;
static int hf_smex_crc_enable = -1;
static int hf_smex_crc_error = -1;
static int hf_smex_mcs_enable = -1;
static int hf_smex_mcs_num_error = -1;
static int hf_smex_data_inv = -1;
static int hf_smex_frame_sync = -1;
static int hf_smex_data_dir = -1;
static int hf_smex_data_class = -1;
static int hf_smex_pb5 = -1;
static int hf_smex_jday = -1;
static int hf_smex_seconds = -1;
static int hf_smex_msec = -1;
/* static int hf_smex_spare = -1; */
static int hf_vcdu_version = -1;
static int hf_vcdu_sp_id = -1;
static int hf_vcdu_vc_id = -1;
static int hf_vcdu_seq = -1;
static int hf_vcdu_replay = -1;
/* Generated from convert_proto_tree_add_text.pl */
static int hf_vcdu_data = -1;
static int hf_vcdu_ground_receipt_time = -1;
static int hf_vcdu_ccsds_all_fill = -1;
static int hf_vcdu_bitream_all_fill = -1;
static int hf_vcdu_bitream_all_data = -1;
static int hf_vcdu_bitream_all_data_anomaly = -1;
static int hf_vcdu_ccsds_continuation_packet = -1;
/* although technically not part of the vcdu header, the
* first header pointer (for ccsds), and the last bit
* pointer (for bitstream), are more easily processed by
* simply adding them to the tail end of the vcdu header
* branch rather than creating a distinct branch for them
*/
static int hf_vcdu_fhp = -1;
static int hf_vcdu_lbp = -1;
static dissector_handle_t vcdu_handle;
static dissector_handle_t ccsds_handle;
/* Initialize the subtree pointers */
static gint ett_vcdu = -1;
static gint ett_smex = -1;
static gint ett_vcduh = -1;
static expert_field ei_vcdu_fhp_too_close_to_end_of_vcdu = EI_INIT;
/*
* Bits in the first 16-bit header word
*/
#define SMEX_VERSION 0xc000
#define SMEX_FRAMELEN 0x3fff
/* some basic sizing parameters */
#define IP_HEADER_LENGTH 48
#define SMEX_HEADER_LENGTH 20
#define VCDU_HEADER_LENGTH 6
#define CCSDS_PRIMARY_HEADER_LENGTH 6
#define CCSDS_SECONDARY_HEADER_LENGTH 10
#define PB5_JULIAN_DAY_MASK 0x7ffe
#define PB5_SECONDS_MASK 0x01ffff
#define PB5_MILLISECONDS_MASK 0xffc0
#define LBP_ALL_DATA 0x3fff
#define LBP_ALL_DATA_ANOMALY 0x7ff
#define LBP_ALL_FILL 0x3ffe
#define FHP_ALL_FILL 0x7fe
#define FHP_CONTINUATION 0x7ff
#define LBP_MASK 0x3fff
#define FHP_MASK 0x7ff
/* leap year macro */
#ifndef Leap
# define Leap(yr) ( ( 0 == (yr)%4 && 0 != (yr)%100 ) || ( 0 == (yr)%400 ) )
#endif
static const value_string smex_data_inversion_type[] = {
{ 0, "Data True (not inverted)" },
{ 1, "Data Inverted (not corrected)" },
{ 2, "Data Inversion State UNDEFINED" },
{ 3, "Data Inverted (and corrected)" },
{ 0, NULL }
};
static const value_string smex_frame_sync_mode[] = {
{ 0, "Search" },
{ 1, "Check" },
{ 2, "Lock" },
{ 3, "Flywheel" },
{ 0, NULL }
};
static const value_string smex_data_direction[] = {
{ 0, "Forward" },
{ 1, "Reverse" },
{ 0, NULL }
};
static const value_string smex_data_class[] = {
{ 0, "Data Class UNDEFINED" },
{ 1, "CCSDS Frame" },
{ 2, "CCSDS Packet" },
{ 3, "TDM Frame" },
{ 4, "Stopped TDM Frame" },
{ 0, NULL }
};
/* default bitstream channel assignments:
* the audio channels 4-6 are designated as bitstream channels
* the standard bitstream channels are 12 through 19
* the video channels 28-30 are designated as bitstream channels
* the fill channel 63 is designated as bitstream
*/
static int bitstream_channels[] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* channels 0-9 */
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, /* channels 10-19 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* channels 20-29 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* channels 30-39 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* channels 40-49 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* channels 50-59 */
0, 0, 0, 1 /* channels 60-63 */
};
typedef struct {
guint channel;
} uat_channel_t;
static uat_channel_t *uat_bitchannels = NULL;
static uat_t *vcdu_uat = NULL;
static guint num_channels_uat = 0;
UAT_DEC_CB_DEF(uat_bitchannels, channel, uat_channel_t)
static gboolean
vcdu_uat_data_update_cb(void *p, char **err) {
uat_channel_t *ud = (uat_channel_t *)p;
if (ud->channel >= 64) {
*err = g_strdup("Channel must be between 0-63.");
return FALSE;
}
return TRUE;
}
static void
vcdu_prefs_apply_cb(void)
{
guint i;
if (num_channels_uat > 0)
{
memset(bitstream_channels, 0, sizeof(bitstream_channels));
for (i = 0; i < num_channels_uat; i++)
{
bitstream_channels[uat_bitchannels[i].channel] = 1;
}
}
}
/* convert smex PB5 header time to a human readable string - NOT THREAD SAFE
*
* note: this is not true PB5 time either, but a tsi specific version, although it is similar
*/
static const char *
smex_time_to_string (int pb5_days_since_midnight_9_10_oct_1995, int pb5_seconds, int pb5_milliseconds)
{
static int utcdiff = 0;
nstime_t t;
static int Days[2][13] =
{
{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
{ 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
};
int yr;
int ix, days, month;
/* compute the static constant difference in seconds
* between midnight 9-10 October 1995 (PB5 time) and
* seconds since 1/1/1970 (UTC time) just this once
*/
if (0 == utcdiff)
{
for (yr=1970; yr < 1995; ++yr)
{
utcdiff += (Leap(yr) ? 366 : 365) * 24 * 60 * 60;
}
days = 0;
ix = (Leap(1995) ? 1 : 0);
for (month=1; month < 10; ++month)
{
days += Days[ix][month];
}
days += 9; /* this gets us up to midnight october 9-10 */
utcdiff += days * 24 * 60 * 60; /* add days in 1995 prior to October 10 */
}
t.secs = (pb5_days_since_midnight_9_10_oct_1995 * 86400) + pb5_seconds + utcdiff;
t.nsecs = pb5_milliseconds*1000000; /* msecs to nsecs */
return abs_time_to_str(wmem_packet_scope(), &t, ABSOLUTE_TIME_DOY_UTC, TRUE);
}
static int
dissect_vcdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
int offset = 0;
gboolean ccsds_tree_added = FALSE;
proto_item *smex_header;
proto_tree *smex_tree;
proto_tree *vcdu_tree;
proto_item *vcdu_item;
guint16 first_word;
guint32 long_word;
int vcid, pb5_days, pb5_seconds, pb5_milliseconds;
const char *time_string;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "VCDU");
col_set_str(pinfo->cinfo, COL_INFO, "Virtual Channel Data Unit");
/* build the smex header tree */
smex_tree = proto_tree_add_subtree(tree, tvb, offset, SMEX_HEADER_LENGTH, ett_smex, &smex_header, "SMEX Header");
proto_tree_add_item(smex_tree, hf_smex_gsc, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
/* proto_tree_add_item(smex_tree, hf_smex_unused, tvb, offset, 2, ENC_BIG_ENDIAN); */
offset += 2;
first_word = tvb_get_ntohs(tvb, offset);
proto_tree_add_uint(smex_tree, hf_smex_version, tvb, offset, 2, first_word);
proto_tree_add_uint(smex_tree, hf_smex_framelen, tvb, offset, 2, first_word);
offset += 2;
proto_tree_add_item(smex_tree, hf_smex_rs_enable, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(smex_tree, hf_smex_rs_error, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(smex_tree, hf_smex_crc_enable, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(smex_tree, hf_smex_crc_error, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(smex_tree, hf_smex_mcs_enable, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(smex_tree, hf_smex_mcs_num_error, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(smex_tree, hf_smex_data_inv, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(smex_tree, hf_smex_frame_sync, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(smex_tree, hf_smex_data_dir, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(smex_tree, hf_smex_data_class, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* extract smex ground receipt time tag */
long_word = tvb_get_ntohl(tvb, offset);
pb5_days = (long_word >> 17) & PB5_JULIAN_DAY_MASK;
pb5_seconds = (long_word & PB5_SECONDS_MASK);
first_word = tvb_get_ntohs(tvb, offset+4);
pb5_milliseconds = (first_word & PB5_MILLISECONDS_MASK) >> 6;
proto_tree_add_item(smex_tree, hf_smex_pb5, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(smex_tree, hf_smex_jday, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(smex_tree, hf_smex_seconds, tvb, offset, 3, ENC_BIG_ENDIAN);
offset += 3;
proto_tree_add_item(smex_tree, hf_smex_msec, tvb, offset, 2, ENC_BIG_ENDIAN);
/* proto_tree_add_item(smex_tree, hf_smex_spare, tvb, offset, 2, ENC_BIG_ENDIAN); */
offset += 2;
/* format ground receipt time into human readable time format for display */
time_string = smex_time_to_string(pb5_days, pb5_seconds, pb5_milliseconds);
proto_tree_add_string(smex_tree, hf_vcdu_ground_receipt_time, tvb, offset-6, 6, time_string);
proto_item_set_end(smex_header, tvb, offset);
/* build the vcdu header tree */
vcdu_tree = proto_tree_add_subtree(tree, tvb, offset, VCDU_HEADER_LENGTH, ett_vcdu, &vcdu_item, "VCDU Header");
/* extract the virtual channel for use later on */
first_word = tvb_get_ntohs(tvb, offset);
vcid = first_word & 0x3f;
proto_tree_add_item(vcdu_tree, hf_vcdu_version, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(vcdu_tree, hf_vcdu_sp_id, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(vcdu_tree, hf_vcdu_vc_id, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(vcdu_tree, hf_vcdu_seq, tvb, offset, 3, ENC_BIG_ENDIAN);
offset += 3;
proto_tree_add_item(vcdu_tree, hf_vcdu_replay, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
/* extract mpdu/bpdu header word */
first_word = tvb_get_ntohs(tvb, offset);
/* do bitstream channel processing */
if (bitstream_channels[vcid])
{
guint16 new_ptr;
/* extract last bit pointer for bitstream channels */
new_ptr = first_word & LBP_MASK;
/* add last bit pointer to display tree */
proto_tree_add_item(vcdu_tree, hf_vcdu_lbp, tvb, offset, 2, ENC_BIG_ENDIAN);
switch (new_ptr)
{
case LBP_ALL_DATA:
proto_tree_add_item(vcdu_tree, hf_vcdu_bitream_all_data, tvb, 0, -1, ENC_NA);
break;
case LBP_ALL_DATA_ANOMALY:
proto_tree_add_item(vcdu_tree, hf_vcdu_bitream_all_data_anomaly, tvb, 0, -1, ENC_NA);
break;
case LBP_ALL_FILL:
proto_tree_add_item(vcdu_tree, hf_vcdu_bitream_all_fill, tvb, 0, -1, ENC_NA);
break;
default:
break;
}
} /* end of bitstream channel processing */
/* do ccsds channel processing */
else
{
guint16 new_ptr;
/* extract first header pointer for ccsds channels */
new_ptr = first_word & FHP_MASK;
/* add first header pointer to display tree */
proto_tree_add_item(vcdu_tree, hf_vcdu_fhp, tvb, offset, 2, ENC_BIG_ENDIAN);
/* process special cases of first header pointer */
if (FHP_ALL_FILL == new_ptr)
{
proto_tree_add_item(vcdu_tree, hf_vcdu_ccsds_all_fill, tvb, 0, -1, ENC_NA);
}
else if (FHP_CONTINUATION == new_ptr)
{
proto_tree_add_item(vcdu_tree, hf_vcdu_ccsds_continuation_packet, tvb, 0, -1, ENC_NA);
}
/* process as many ccsds packet headers as we can using the ccsds packet dissector */
else
{
int packet_boundary;
int new_offset;
/* compute offset and packet boundary lengths for ccsds dissector loop */
new_offset = offset + 2 + new_ptr;
packet_boundary =
tvb_reported_length(tvb) - VCDU_HEADER_LENGTH
- CCSDS_PRIMARY_HEADER_LENGTH - CCSDS_SECONDARY_HEADER_LENGTH;
while ( ((new_offset-offset+2) < packet_boundary) && ((new_offset-offset+2) >= 4) )
{
int ccsds_len;
tvbuff_t *new_tvb;
ccsds_tree_added = TRUE;
ccsds_len = tvb_get_ntohs(tvb, new_offset+4);
new_tvb = tvb_new_subset_remaining(tvb, new_offset);
call_dissector(ccsds_handle, new_tvb, pinfo, vcdu_tree);
new_offset = new_offset + ccsds_len + 7;
}
if (! ccsds_tree_added)
{
proto_tree_add_expert(vcdu_tree, pinfo, &ei_vcdu_fhp_too_close_to_end_of_vcdu, tvb, 0, -1);
}
}
} /* end of ccsds channel processing */
/* don't include the mpdu/bpdu header in the vcdu header highlighting.
* by skipping the offset bump the vcdu header highlighting will show
* just 6 bytes as it really should, and the fhp/lbp will be included
* in the data zone, which is technically more correct.
*/
/* offset += 2; */
proto_item_set_end(vcdu_item, tvb, offset);
if (! ccsds_tree_added)
{
/* add "Data" section if ccsds parsing did not do so already */
proto_tree_add_item(vcdu_tree, hf_vcdu_data, tvb, offset, -1, ENC_NA);
}
return tvb_captured_length(tvb);
}
void
proto_register_vcdu(void)
{
module_t *vcdu_module;
/* Setup list of header fields See Section 1.6.1 for details*/
static hf_register_info hf[] = {
{ &hf_smex_gsc,
{ "Ground Sequence Counter", "vcdu.smex.gsc",
FT_UINT64, BASE_DEC, NULL, 0x0,
"SMEX Ground Sequence Counter", HFILL }
},
#if 0
{ &hf_smex_unused,
{ "Unused", "vcdu.smex.unused",
FT_UINT16, BASE_DEC, NULL, 0x0,
"SMEX Unused", HFILL }
},
#endif
{ &hf_smex_version,
{ "Version", "vcdu.smex.version",
FT_UINT16, BASE_DEC, NULL, SMEX_VERSION,
"SMEX Version", HFILL }
},
{ &hf_smex_framelen,
{ "Frame Length", "vcdu.smex.frame_len",
FT_UINT16, BASE_DEC, NULL, SMEX_FRAMELEN,
"SMEX Frame Length", HFILL }
},
{ &hf_smex_rs_enable,
{ "RS Enable", "vcdu.smex.rs_enable",
FT_BOOLEAN, 8, NULL, 0x80,
"SMEX RS Enable", HFILL }
},
{ &hf_smex_rs_error,
{ "RS Error", "vcdu.smex.rs_error",
FT_BOOLEAN, 8, NULL, 0x40,
"SMEX RS Error", HFILL }
},
{ &hf_smex_crc_enable,
{ "CRC Enable", "vcdu.smex.crc_enable",
FT_BOOLEAN, 8, NULL, 0x20,
"SMEX CRC Enable", HFILL }
},
{ &hf_smex_crc_error,
{ "CRC Error", "vcdu.smex.crc_error",
FT_BOOLEAN, 8, NULL, 0x10,
"SMEX CRC Error", HFILL }
},
{ &hf_smex_mcs_enable,
{ "MCS Enable", "vcdu.smex.mcs_enable",
FT_BOOLEAN, 8, NULL, 0x08,
"SMEX MCS Enable", HFILL }
},
{ &hf_smex_mcs_num_error,
{ "MCS Number Error", "vcdu.smex.mcs_numerr",
FT_BOOLEAN, 8, NULL, 0x04,
"SMEX MCS Number Error", HFILL }
},
{ &hf_smex_data_inv,
{ "Data Inversion", "vcdu.smex.data_inv",
FT_UINT16, BASE_DEC, VALS(smex_data_inversion_type), 0x03,
"SMEX Data Inversion", HFILL }
},
{ &hf_smex_frame_sync,
{ "Frame Sync", "vcdu.smex.frame_sync",
FT_UINT16, BASE_DEC, VALS(smex_frame_sync_mode), 0xc0,
"SMEX Frame Sync Flag", HFILL }
},
{ &hf_smex_data_dir,
{ "Data Direction", "vcdu.smex.data_dir",
FT_UINT16, BASE_DEC, VALS(smex_data_direction), 0x20,
"SMEX Data Direction flag", HFILL }
},
{ &hf_smex_data_class,
{ "Data Class", "vcdu.smex.data_class",
FT_UINT16, BASE_DEC, VALS(smex_data_class), 0x1f,
"SMEX Data Class", HFILL }
},
{ &hf_smex_pb5,
{ "PB5 Flag", "vcdu.smex.pb5",
FT_UINT16, BASE_DEC, NULL, 0x8000,
"SMEX PB5 Flag", HFILL }
},
{ &hf_smex_jday,
{ "Julian Day", "vcdu.smex.jday",
FT_UINT16, BASE_DEC, NULL, PB5_JULIAN_DAY_MASK,
"SMEX Julian Day", HFILL }
},
{ &hf_smex_seconds,
{ "Seconds", "vcdu.smex.seconds",
FT_UINT24, BASE_DEC, NULL, PB5_SECONDS_MASK,
"SMEX Seconds", HFILL }
},
{ &hf_smex_msec,
{ "Milliseconds", "vcdu.smex.msec",
FT_UINT16, BASE_DEC, NULL, PB5_MILLISECONDS_MASK,
"SMEX Milliseconds", HFILL }
},
#if 0
{ &hf_smex_spare,
{ "Spare", "vcdu.smex.spare",
FT_UINT16, BASE_DEC, NULL, 0x03f,
"SMEX Spare", HFILL }
},
#endif
{ &hf_vcdu_version,
{ "Version", "vcdu.version",
FT_UINT16, BASE_DEC, NULL, 0xc0,
"VCDU Version", HFILL }
},
{ &hf_vcdu_sp_id,
{ "Space Craft ID", "vcdu.spid",
FT_UINT16, BASE_DEC, NULL, 0x3fc0,
"VCDU Space Craft ID", HFILL }
},
{ &hf_vcdu_vc_id,
{ "Virtual Channel ID", "vcdu.vcid",
FT_UINT16, BASE_DEC, NULL, 0x3f,
"VCDU Virtual Channel ID", HFILL }
},
{ &hf_vcdu_seq,
{ "Sequence Count", "vcdu.seq",
FT_UINT16, BASE_DEC, NULL, 0xffffff,
"VCDU Sequence Count", HFILL }
},
{ &hf_vcdu_replay,
{ "Replay Flag", "vcdu.replay",
FT_BOOLEAN, 8, NULL, 0x80,
"VCDU Replay Flag", HFILL }
},
/* Generated from convert_proto_tree_add_text.pl */
{ &hf_vcdu_ground_receipt_time, { "Ground Receipt Time", "vcdu.ground_receipt_time", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_vcdu_bitream_all_data, { "Bitream ALL Data", "vcdu.bitream.all_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_vcdu_bitream_all_data_anomaly, { "Bitream ALL Data (Anomaly)", "vcdu.bitream.all_data_anomaly", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_vcdu_bitream_all_fill, { "Bitream ALL Fill", "vcdu.bitream.all_fill", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_vcdu_ccsds_all_fill, { "Ccsds ALL Fill", "vcdu.ccsds.all_fill", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_vcdu_ccsds_continuation_packet, { "Ccsds Continuation Packet", "vcdu.ccsds_continuation_packet", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_vcdu_data, { "Data", "vcdu.data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
/* not really part of the vcdu header, but it's easier this way */
{ &hf_vcdu_fhp,
{ "First Header Pointer", "vcdu.fhp",
FT_UINT16, BASE_DEC, NULL, FHP_MASK,
"VCDU/MPDU First Header Pointer", HFILL }
},
{ &hf_vcdu_lbp,
{ "Last Bit Pointer", "vcdu.lbp",
FT_UINT16, BASE_DEC, NULL, LBP_MASK,
"VCDU/BPDU Last Bit Pointer", HFILL }
}
};
static uat_field_t vcdu_uat_flds[] = {
UAT_FLD_DEC(uat_bitchannels, channel, "Bitstream Channel", "Bitstream Channel"),
UAT_END_FIELDS
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_vcdu,
&ett_smex,
&ett_vcduh,
};
static ei_register_info ei[] = {
{ &ei_vcdu_fhp_too_close_to_end_of_vcdu, { "vcdu.fhp_too_close_to_end_of_vcdu", PI_PROTOCOL, PI_WARN, "FHP too close to end of VCDU. Incomplete Hdr Info Available - Unable to format CCSDS Hdr(s).", EXPFILL }},
};
expert_module_t* expert_vcdu;
/* Register the protocol name and description */
proto_vcdu = proto_register_protocol("VCDU", "VCDU", "vcdu");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_vcdu, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_vcdu = expert_register_protocol(proto_vcdu);
expert_register_field_array(expert_vcdu, ei, array_length(ei));
/* XX: Does this dissector need to be publicly registered ?? */
vcdu_handle = register_dissector("vcdu", dissect_vcdu, proto_vcdu);
vcdu_module = prefs_register_protocol(proto_vcdu, vcdu_prefs_apply_cb);
vcdu_uat = uat_new("Bitstream Channel Table",
sizeof(uat_channel_t),
"vcdu_bitstream_channels",
TRUE,
&uat_bitchannels,
&num_channels_uat,
UAT_AFFECTS_DISSECTION, /* affects dissection of packets, but not set of named fields */
NULL,
NULL,
vcdu_uat_data_update_cb,
NULL,
NULL,
vcdu_uat_flds);
prefs_register_uat_preference(vcdu_module,
"bitstream_channels",
"Bitstream Channel Table",
"Bitstream Channel Table",
vcdu_uat);
}
void
proto_reg_handoff_vcdu(void)
{
dissector_add_for_decode_as_with_preference("udp.port", vcdu_handle);
ccsds_handle = find_dissector_add_dependency("ccsds", proto_vcdu);
}
/*
* 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:
*/
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