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wireshark/epan/dissectors/packet-vcdu.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
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#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 (wmem_allocator_t *pool, 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(pool, &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(pinfo->pool, 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, 0x003f,
"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_UINT24, 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,
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 - 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:
*/
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