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wireshark/epan/dissectors/packet-catapult-dct2000.c

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/* packet-catapult-dct2000.c
* Routines for Catapult DCT2000 packet stub header disassembly
*
* $Id$
*
* 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; 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <string.h>
#include <ctype.h>
#include <epan/packet.h>
#include <epan/emem.h>
#include <epan/proto.h>
#include <epan/ipproto.h>
#include <epan/prefs.h>
#include <epan/strutil.h>
#include <epan/addr_resolv.h>
#include <wiretap/catapult_dct2000.h>
#include "packet-umts_fp.h"
/* Protocol and registered fields. */
static int proto_catapult_dct2000 = -1;
static int hf_catapult_dct2000_context = -1;
static int hf_catapult_dct2000_port_number = -1;
static int hf_catapult_dct2000_timestamp = -1;
static int hf_catapult_dct2000_protocol = -1;
static int hf_catapult_dct2000_variant = -1;
static int hf_catapult_dct2000_outhdr = -1;
static int hf_catapult_dct2000_direction = -1;
static int hf_catapult_dct2000_encap = -1;
static int hf_catapult_dct2000_unparsed_data = -1;
static int hf_catapult_dct2000_tty = -1;
static int hf_catapult_dct2000_tty_line = -1;
static int hf_catapult_dct2000_dissected_length = -1;
static int hf_catapult_dct2000_ipprim_addresses = -1;
static int hf_catapult_dct2000_ipprim_src_addr_v4 = -1;
static int hf_catapult_dct2000_ipprim_src_addr_v6 = -1;
static int hf_catapult_dct2000_ipprim_dst_addr_v4 = -1;
static int hf_catapult_dct2000_ipprim_dst_addr_v6 = -1;
static int hf_catapult_dct2000_ipprim_addr_v4 = -1;
static int hf_catapult_dct2000_ipprim_addr_v6 = -1;
static int hf_catapult_dct2000_ipprim_udp_src_port = -1;
static int hf_catapult_dct2000_ipprim_udp_dst_port = -1;
static int hf_catapult_dct2000_ipprim_udp_port = -1;
static int hf_catapult_dct2000_ipprim_tcp_src_port = -1;
static int hf_catapult_dct2000_ipprim_tcp_dst_port = -1;
static int hf_catapult_dct2000_ipprim_tcp_port = -1;
static int hf_catapult_dct2000_ipprim_conn_id = -1;
static int hf_catapult_dct2000_sctpprim_addresses = -1;
static int hf_catapult_dct2000_sctpprim_dst_addr_v4 = -1;
static int hf_catapult_dct2000_sctpprim_dst_addr_v6 = -1;
static int hf_catapult_dct2000_sctpprim_addr_v4 = -1;
static int hf_catapult_dct2000_sctpprim_addr_v6 = -1;
static int hf_catapult_dct2000_sctpprim_dst_port = -1;
/* Variables used for preferences */
gboolean catapult_dct2000_try_ipprim_heuristic = TRUE;
gboolean catapult_dct2000_try_sctpprim_heuristic = TRUE;
/* Protocol subtree. */
static int ett_catapult_dct2000 = -1;
static int ett_catapult_dct2000_ipprim = -1;
static int ett_catapult_dct2000_sctpprim = -1;
static int ett_catapult_dct2000_tty = -1;
static const value_string direction_vals[] = {
{ 0, "Sent" },
{ 1, "Received" },
{ 0, NULL },
};
static const value_string encap_vals[] = {
{ WTAP_ENCAP_RAW_IP, "Raw IP" },
{ WTAP_ENCAP_ETHERNET, "Ethernet" },
{ WTAP_ENCAP_ISDN, "LAPD" },
{ WTAP_ENCAP_ATM_PDUS_UNTRUNCATED, "ATM (PDUs untruncated)" },
{ WTAP_ENCAP_PPP, "PPP" },
{ DCT2000_ENCAP_SSCOP, "SSCOP" },
{ WTAP_ENCAP_FRELAY, "Frame Relay" },
{ WTAP_ENCAP_MTP2, "MTP2" },
{ DCT2000_ENCAP_NBAP, "NBAP" },
{ DCT2000_ENCAP_UNHANDLED, "No Direct Encapsulation" },
{ 0, NULL },
};
#define MAX_OUTHDR_VALUES 32
static guint outhdr_values[MAX_OUTHDR_VALUES];
static gint outhdr_values_found = 0;
extern int proto_fp;
void proto_reg_handoff_catapult_dct2000(void);
void proto_register_catapult_dct2000(void);
static dissector_handle_t look_for_dissector(char *protocol_name);
static void parse_outhdr_string(guchar *outhdr_string);
static void attach_fp_info(packet_info *pinfo, gboolean received,
const char *protocol_name, int variant);
/* Return the number of bytes used to encode the length field
(we're not interested in the length value itself) */
static int skipASNLength(guint8 value)
{
if ((value & 0x80) == 0)
{
return 1;
}
else
{
return ((value & 0x03) == 1) ? 2 : 3;
}
}
/* Look for the protocol data within an ipprim packet.
Only set *data_offset if data field found. */
static gboolean find_ipprim_data_offset(tvbuff_t *tvb, int *data_offset, guint8 direction,
guint32 *source_addr_offset, guint8 *source_addr_length,
guint32 *dest_addr_offset, guint8 *dest_addr_length,
guint32 *source_port_offset, guint32 *dest_port_offset,
port_type *type_of_port,
guint16 *conn_id_offset)
{
guint8 length;
int offset = *data_offset;
/* Get the ipprim command code. */
guint8 tag = tvb_get_guint8(tvb, offset++);
/* Only accept UDP or TCP data request or indication */
switch (tag)
{
case 0x23: /* UDP data request */
case 0x24: /* UDP data indication */
*type_of_port = PT_UDP;
break;
case 0x45: /* TCP data request */
case 0x46: /* TCP data indication */
*type_of_port = PT_TCP;
break;
default:
return FALSE;
}
/* Skip any other TLC fields before reach payload */
while (tvb_length_remaining(tvb, offset) > 2)
{
/* Look at next tag */
tag = tvb_get_guint8(tvb, offset++);
/* Is this the data payload we're expecting? */
if (((tag == 0x34) && (*type_of_port == PT_UDP)) ||
((tag == 0x48) && (*type_of_port == PT_TCP)))
{
*data_offset = offset;
return TRUE;
}
else
{
/* Read length in next byte */
length = tvb_get_guint8(tvb, offset++);
if (tag == 0x31 && length >=4)
{
/* Remote IP address */
if (direction == 0)
{
/* Sent *to* remote, so dest */
*dest_addr_offset = offset;
*dest_addr_length = (length/4) * 4;
}
else
{
*source_addr_offset = offset;
*source_addr_length = (length/4) * 4;
}
/* Remote port follows (if present) */
if ((length % 4) == 2)
{
if (direction == 0)
{
*dest_port_offset = offset + 4;
}
else
{
*source_port_offset = offset + 4;
}
}
}
else
if (tag == 0x32)
{
if (length == 4 || length == 16)
{
/* Local IP address */
if (direction == 0)
{
/* Sent *from* local, so source */
*source_addr_offset = offset;
*source_addr_length = length;
}
else
{
*dest_addr_offset = offset;
*dest_addr_length = length;
}
}
}
else
if (tag == 0x33 && length == 2)
{
/* Get local port */
if (direction == 0)
{
/* Sent from local, so source */
*source_port_offset = offset;
}
else
{
*dest_port_offset = offset;
}
}
else
if (tag == 0x36 && length == 2)
{
/* Get conn_id */
*conn_id_offset = offset;
}
/* Skip the length of the indicated value */
offset += length;
}
}
/* No data found... */
return FALSE;
}
/* Look for the protocol data within an sctpprim (variant 1 or 2...) packet.
Only set *data_offset if data field found. */
static gboolean find_sctpprim_variant1_data_offset(tvbuff_t *tvb, int *data_offset,
guint32 *dest_addr_offset,
guint16 *dest_addr_length,
guint32 *dest_port_offset)
{
int offset = *data_offset;
/* Get the sctpprim command code. */
guint8 first_tag = tvb_get_guint8(tvb, offset++);
guint8 tag;
guint8 first_length_byte;
/* Only accept interested in data requests or indications */
switch (first_tag)
{
case 0x04: /* data request */
case 0x62: /* data indication */
break;
default:
return FALSE;
}
first_length_byte = tvb_get_guint8(tvb, offset);
offset += skipASNLength(first_length_byte);
/* Skip any other fields before reach payload */
while (tvb_length_remaining(tvb, offset) > 2)
{
/* Look at next tag */
tag = tvb_get_guint8(tvb, offset++);
/* Is this the data payload we're expecting? */
if (tag == 0x19)
{
*data_offset = offset;
return TRUE;
}
else
{
/* Skip length field */
offset++;
switch (tag)
{
case 0x0a: /* destPort */
*dest_port_offset = offset;
offset += 2;
break;
case 0x01: /* sctpInstanceNum */
case 0x1e: /* strseqnum */
case 0x0d: /* streamnum */
offset += 2;
continue;
case 0x09: /* ipv4Address */
*dest_addr_offset = offset;
*dest_addr_length = 4;
offset += 4;
break;
case 0x1d:
case 0x0c: /* payloadType */
offset += 4;
continue;
default:
/* Fail if not a known header field */
return FALSE;
}
}
}
/* No data found... */
return FALSE;
}
/* Look for the protocol data within an sctpprim (variant 3) packet.
Only set *data_offset if data field found. */
static gboolean find_sctpprim_variant3_data_offset(tvbuff_t *tvb, int *data_offset,
guint32 *dest_addr_offset,
guint16 *dest_addr_length,
guint32 *dest_port_offset)
{
guint16 tag = 0;
guint16 length = 0;
int offset = *data_offset;
/* Get the sctpprim (2 byte) command code. */
guint16 top_tag = tvb_get_ntohs(tvb, offset);
offset += 2;
/* Only interested in data requests or indications */
switch (top_tag)
{
case 0x0400: /* SendDataReq */
case 0x6200: /* DataInd */
break;
default:
return FALSE;
}
/* Overall length field is next 2 bytes */
offset += 2;
/* Rx/Tx ops have different formats */
/*****************/
/* DataInd */
if (top_tag == 0x6200)
{
/* Next 2 bytes are associate ID */
offset += 2;
/* Next 2 bytes are destination port */
*dest_port_offset = offset;
offset += 2;
/* Destination address should follow - check tag */
tag = tvb_get_ntohs(tvb, offset);
if (tag != 0x0900)
{
return FALSE;
}
else {
/* Skip tag */
offset += 2;
/* Length field */
length = tvb_get_ntohs(tvb, offset) / 2;
if ((length != 4) && (length != 16))
{
return FALSE;
}
offset += 2;
/* Address data is here */
*dest_addr_offset = offset;
*dest_addr_length = length;
offset += length;
}
/* Not interested in remaining (fixed) fields */
if (tvb_reported_length_remaining(tvb, offset) > (4 + 2 + 2 + 4))
{
offset += (4 + 2 + 2 + 4);
}
else {
return FALSE;
}
/* Data should now be here */
tag = tvb_get_ntohs(tvb, offset);
offset += 2;
if (tag == 0x1900)
{
/* 2-byte length field */
offset += 2;
/* Data is here!!! */
*data_offset = offset;
return TRUE;
}
else
{
return FALSE;
}
}
/***************/
/* SendDataReq */
else if (top_tag == 0x0400)
{
/* AssociateId should follow - check tag */
tag = tvb_get_ntohs(tvb, offset);
if (tag != 0x2400)
{
return FALSE;
}
else {
/* Skip tag */
offset += 2;
/* Skip 2-byte value */
offset += 2;
}
/* Get tag */
tag = tvb_get_ntohs(tvb, offset);
offset += 2;
/* Some optional params */
while ((tag != 0x0c00) && (tvb_length_remaining(tvb, offset) > 4))
{
switch (tag)
{
case 0x0900: /* Dest address */
/* Length field */
length = tvb_get_ntohs(tvb, offset) / 2;
if ((length != 4) && (length != 16))
{
return FALSE;
}
offset += 2;
/* Address data is here */
*dest_addr_offset = offset;
*dest_addr_length = length;
offset += length;
break;
case 0x0a00: /* Dest port number */
*dest_port_offset = offset;
offset += 2;
break;
case 0x0d00: /* StreamNum */
*dest_port_offset = offset;
offset += 2;
break;
default:
return FALSE;
}
/* Get the next tag */
tag = tvb_get_ntohs(tvb, offset);
offset += 2;
}
/* Mandatory payload type */
if (tag != 0x0c00)
{
return FALSE;
}
length = tvb_get_ntohs(tvb, offset) / 2;
offset += 2;
offset += length;
/* Optional options */
tag = tvb_get_ntohs(tvb, offset);
offset += 2;
if (tag == 0x0b00)
{
length = tvb_get_ntohs(tvb, offset) / 2;
offset += 2;
offset += length;
/* Get next tag */
tag = tvb_get_ntohs(tvb, offset);
offset += 2;
}
/* Data should now be here!! */
if (tag == 0x1900)
{
/* 2-byte length field */
offset += 2;
/* Data is here!!! */
*data_offset = offset;
return TRUE;
}
else
{
return FALSE;
}
}
return FALSE;
}
/* Look up dissector by protocol name. Fix up known name mis-matches.
This includes exact matches and prefixes (e.g. "diameter_rx" -> "diameter") */
dissector_handle_t look_for_dissector(char *protocol_name)
{
/* Use known aliases and protocol name prefixes */
if (strcmp(protocol_name, "tbcp") == 0)
{
return find_dissector("rtcp");
}
else
if (strncmp(protocol_name, "diameter", strlen("diameter")) == 0)
{
return find_dissector("diameter");
}
else
if ((strcmp(protocol_name, "xcap_caps") == 0) ||
(strcmp(protocol_name, "soap") == 0) ||
(strcmp(protocol_name, "mm1") == 0) ||
(strcmp(protocol_name, "mm3") == 0) ||
(strcmp(protocol_name, "mm7") == 0))
{
return find_dissector("http");
}
else
if ((strcmp(protocol_name, "fp") == 0) ||
(strcmp(protocol_name, "fp_r4") == 0) ||
(strcmp(protocol_name, "fp_r5") == 0) ||
(strcmp(protocol_name, "fp_r6") == 0) ||
(strcmp(protocol_name, "fp_r7") == 0) ||
(strcmp(protocol_name, "fpiur_r5") == 0))
{
return find_dissector("fp");
}
else
if ((strcmp(protocol_name, "iuup_rtp_r5") == 0) ||
(strcmp(protocol_name, "iuup_rtp_r6") == 0))
{
return find_dissector("rtp");
}
else
if (strcmp(protocol_name, "sipt") == 0)
{
return find_dissector("sip");
}
else
if (strncmp(protocol_name, "nbap_sctp", strlen("nbap_sctp")) == 0)
{
return find_dissector("nbap");
}
else
if (strncmp(protocol_name, "gtp", strlen("gtp")) == 0)
{
return find_dissector("gtp");
}
else
if (strcmp(protocol_name, "dhcpv4") == 0)
{
return find_dissector("bootp");
}
else
if (strcmp(protocol_name, "wimax") == 0)
{
return find_dissector("wimaxasncp");
}
else
if (strncmp(protocol_name, "sabp", strlen("sabp")) == 0)
{
return find_dissector("sabp");
}
else
if (strcmp(protocol_name, "wtp") == 0)
{
return find_dissector("wtp-udp");
}
else
if (strncmp(protocol_name, "s1ap", strlen("s1ap")) == 0)
{
return find_dissector("s1ap");
}
/* Try for an exact match */
else
{
return find_dissector(protocol_name);
}
}
/* Populate outhdr_values array with numbers found in outhdr_string */
void parse_outhdr_string(guchar *outhdr_string)
{
int n = 0;
/* Populate values array */
for (outhdr_values_found=0; outhdr_values_found < MAX_OUTHDR_VALUES; )
{
guint digits_start = n;
guint digits;
/* Find digits */
for (digits = 0; digits < strlen((gchar*)outhdr_string); digits++, n++)
{
if (!isdigit(outhdr_string[n]))
{
break;
}
}
if (digits == 0)
{
/* No more numbers left */
break;
}
/* Convert digits into value */
outhdr_values[outhdr_values_found++] =
atoi((char*)format_text((guchar*)outhdr_string+digits_start, digits));
/* Skip comma */
n++;
}
}
/* Fill in an FP packet info struct and attach it to the packet for the FP
dissector to use */
void attach_fp_info(packet_info *pinfo, gboolean received, const char *protocol_name, int variant)
{
int i=0;
int chan;
int tf_start, num_chans_start;
gint node_type;
/* Allocate & zero struct */
struct fp_info *p_fp_info = se_alloc(sizeof(struct fp_info));
if (!p_fp_info)
{
return;
}
memset(p_fp_info, 0, sizeof(struct fp_info));
/* Check that the number of outhdr values looks sensible */
if (((strcmp(protocol_name, "fpiur_r5") == 0) && (outhdr_values_found != 2)) ||
(outhdr_values_found < 5))
{
return;
}
/* 3gpp release (99, 4, 5, 6, 7) */
if (strcmp(protocol_name, "fp") == 0)
{
p_fp_info->release = 99;
}
else if (strcmp(protocol_name, "fp_r4") == 0)
{
p_fp_info->release = 4;
}
else if (strcmp(protocol_name, "fp_r5") == 0)
{
p_fp_info->release = 5;
}
else if (strcmp(protocol_name, "fp_r6") == 0)
{
p_fp_info->release = 6;
}
else if (strcmp(protocol_name, "fp_r7") == 0)
{
p_fp_info->release = 7;
}
else if (strcmp(protocol_name, "fpiur_r5") == 0)
{
p_fp_info->release = 5;
}
else
{
/* Really shouldn't get here */
DISSECTOR_ASSERT_NOT_REACHED();
return;
}
/* Release date is derived from variant number */
/* Only R6 sub-versions currently influence format within a release */
switch (p_fp_info->release)
{
case 6:
switch (variant % 256)
{
case 1:
p_fp_info->release_year = 2005;
p_fp_info->release_month = 6;
break;
case 2:
p_fp_info->release_year = 2005;
p_fp_info->release_month = 9;
break;
case 3:
default:
p_fp_info->release_year = 2006;
p_fp_info->release_month = 3;
break;
}
break;
default:
p_fp_info->release_year = 0;
p_fp_info->release_month = 0;
}
/* Channel type */
p_fp_info->channel = outhdr_values[i++];
/* Derive direction from node type/side */
node_type = outhdr_values[i++];
p_fp_info->is_uplink = (( received && (node_type == 2)) ||
(!received && (node_type == 1)));
/* Division type introduced for R7 */
if (p_fp_info->release == 7)
{
p_fp_info->division = outhdr_values[i++];
}
/* HS-DSCH config */
if (p_fp_info->channel == CHANNEL_HSDSCH)
{
if (p_fp_info->release == 7)
{
if (outhdr_values[i++])
{
p_fp_info->hsdsch_entity = ehs;
}
}
else
{
/* This is the pre-R7 default */
p_fp_info->hsdsch_entity = hs;
}
}
/* IUR only uses the above... */
if (strcmp(protocol_name, "fpiur_r5") == 0)
{
/* Store info in packet */
p_fp_info->iface_type = IuR_Interface;
p_add_proto_data(pinfo->fd, proto_fp, p_fp_info);
return;
}
/* DCH CRC present... */
p_fp_info->dch_crc_present = outhdr_values[i++];
/* ... but don't trust for edch */
if (p_fp_info->channel == CHANNEL_EDCH)
{
p_fp_info->dch_crc_present = 2; /* unknown */
}
/* How many paging indications (if PCH data) */
p_fp_info->paging_indications = outhdr_values[i++];
/* Number of channels (for coordinated channels) */
p_fp_info->num_chans = outhdr_values[i++];
if (p_fp_info->channel != CHANNEL_EDCH)
{
/* TF size for each channel */
tf_start = i;
for (chan=0; chan < p_fp_info->num_chans; chan++)
{
p_fp_info->chan_tf_size[chan] = outhdr_values[tf_start+chan];
}
/* Number of TBs for each channel */
num_chans_start = tf_start + p_fp_info->num_chans;
for (chan=0; chan < p_fp_info->num_chans; chan++)
{
p_fp_info->chan_num_tbs[chan] = outhdr_values[num_chans_start+chan];
}
}
/* EDCH info */
else
{
int n;
p_fp_info->no_ddi_entries = outhdr_values[i++];
/* DDI values */
for (n=0; n < p_fp_info->no_ddi_entries; n++)
{
p_fp_info->edch_ddi[n] = outhdr_values[i++];
}
/* Corresponding MAC-d sizes */
for (n=0; n < p_fp_info->no_ddi_entries; n++)
{
p_fp_info->edch_macd_pdu_size[n] = outhdr_values[i++];
}
}
/* Interface must be IuB */
p_fp_info->iface_type = IuB_Interface;
/* Store info in packet */
p_add_proto_data(pinfo->fd, proto_fp, p_fp_info);
}
/* Attempt to show tty (raw character messages) as text lines. */
void dissect_tty_lines(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
{
gint next_offset;
proto_tree *tty_tree;
proto_item *ti;
int lines = 0;
/* Create tty tree. */
ti = proto_tree_add_item(tree, hf_catapult_dct2000_tty, tvb, offset, -1, FALSE);
tty_tree = proto_item_add_subtree(ti, ett_catapult_dct2000);
/* Show the tty lines one at a time. */
while (tvb_reported_length_remaining(tvb, offset) > 0)
{
/* Find the end of the line. */
int linelen = tvb_find_line_end_unquoted(tvb, offset, -1, &next_offset);
/* Extract & add the string. */
char *string = (char*)tvb_get_ephemeral_string(tvb, offset, linelen);
proto_tree_add_string_format(tty_tree, hf_catapult_dct2000_tty_line,
tvb, offset,
linelen, string,
"%s", string);
lines++;
/* Show first line in info column */
if (lines == 1 && check_col(pinfo->cinfo, COL_INFO)) {
col_append_fstr(pinfo->cinfo, COL_INFO, "tty (%s", string);
}
/* Move onto next line. */
offset = next_offset;
}
/* Close off summary of tty message in info column */
if (lines != 0) {
if (check_col(pinfo->cinfo, COL_INFO)) {
col_append_str(pinfo->cinfo, COL_INFO, (lines > 1) ? "...)" : ")");
}
}
}
/*****************************************/
/* Main dissection function. */
/*****************************************/
static void
dissect_catapult_dct2000(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *dct2000_tree = NULL;
proto_item *ti = NULL;
gint offset = 0;
gint context_length;
guint8 port_number;
gint protocol_start;
gint protocol_length;
gint timestamp_start;
gint timestamp_length;
gint variant_start;
gint variant_length;
gint outhdr_start;
gint outhdr_length;
guint8 direction;
tvbuff_t *next_tvb;
int encap;
dissector_handle_t protocol_handle = 0;
dissector_handle_t heur_protocol_handle = 0;
int sub_dissector_result = 0;
char *protocol_name;
/* Set Protocol */
if (check_col(pinfo->cinfo, COL_PROTOCOL))
{
col_set_str(pinfo->cinfo, COL_PROTOCOL, "DCT2000");
}
/* Clear Info */
if (check_col(pinfo->cinfo, COL_INFO))
{
col_clear(pinfo->cinfo, COL_INFO);
}
/* Create root (protocol) tree. */
if (tree)
{
ti = proto_tree_add_item(tree, proto_catapult_dct2000, tvb, offset, -1, FALSE);
dct2000_tree = proto_item_add_subtree(ti, ett_catapult_dct2000);
}
/*********************************************************************/
/* Note that these are the fields of the stub header as written out */
/* by the wiretap module */
/* Context Name */
context_length = tvb_strsize(tvb, offset);
if (dct2000_tree) {
proto_tree_add_item(dct2000_tree, hf_catapult_dct2000_context, tvb,
offset, context_length, FALSE);
}
offset += context_length;
/* Context port number */
port_number = tvb_get_guint8(tvb, offset);
if (dct2000_tree) {
proto_tree_add_item(dct2000_tree, hf_catapult_dct2000_port_number, tvb,
offset, 1, FALSE);
}
offset++;
/* Timestamp in file */
timestamp_start = offset;
timestamp_length = tvb_strsize(tvb, offset);
if (dct2000_tree) {
proto_tree_add_double_format_value(dct2000_tree, hf_catapult_dct2000_timestamp, tvb,
offset, timestamp_length,
atof(tvb_format_text(tvb, offset, timestamp_length)),
"%s", tvb_format_text(tvb, offset, timestamp_length-1));
}
offset += timestamp_length;
/* DCT2000 protocol name */
protocol_start = offset;
protocol_length = tvb_strsize(tvb, offset);
if (dct2000_tree) {
proto_tree_add_item(dct2000_tree, hf_catapult_dct2000_protocol, tvb,
offset, protocol_length, FALSE);
}
offset += protocol_length;
/* Protocol Variant */
variant_start = offset;
variant_length = tvb_strsize(tvb, offset);
if (dct2000_tree) {
proto_tree_add_item(dct2000_tree, hf_catapult_dct2000_variant, tvb,
offset, variant_length, FALSE);
}
offset += variant_length;
/* Outhdr (shown as string) */
outhdr_start = offset;
outhdr_length = tvb_strsize(tvb, offset);
if ((outhdr_length > 1) && dct2000_tree)
{
proto_tree_add_item(dct2000_tree, hf_catapult_dct2000_outhdr, tvb,
offset, outhdr_length, FALSE);
}
offset += outhdr_length;
/* Direction */
direction = tvb_get_guint8(tvb, offset);
if (dct2000_tree) {
proto_tree_add_item(dct2000_tree, hf_catapult_dct2000_direction, tvb,
offset, 1, FALSE);
}
offset++;
/* Read frame encapsulation set by wiretap */
if (dct2000_tree) {
proto_tree_add_item(dct2000_tree, hf_catapult_dct2000_encap, tvb, offset, 1, FALSE);
}
encap = tvb_get_guint8(tvb, offset);
offset++;
if (dct2000_tree)
{
/* Set selection length of dct2000 tree */
proto_item_set_len(dct2000_tree, offset);
}
/* Add useful details to protocol tree label */
protocol_name = (char*)tvb_get_ephemeral_string(tvb, protocol_start, protocol_length);
if (tree)
{
proto_item_append_text(ti, " context=%s.%u t=%s %c prot=%s (v=%s)",
tvb_get_ephemeral_string(tvb, 0, context_length),
port_number,
tvb_get_ephemeral_string(tvb, timestamp_start, timestamp_length),
(direction == 0) ? 'S' : 'R',
protocol_name,
tvb_get_ephemeral_string(tvb, variant_start, variant_length));
}
/* FP protocols need info from outhdr attached */
if ((strcmp(protocol_name, "fp") == 0) ||
(strcmp(protocol_name, "fp_r4") == 0) ||
(strcmp(protocol_name, "fp_r5") == 0) ||
(strcmp(protocol_name, "fp_r6") == 0) ||
(strcmp(protocol_name, "fp_r7") == 0) ||
(strcmp(protocol_name, "fpiur_r5") == 0))
{
parse_outhdr_string(tvb_get_ephemeral_string(tvb, outhdr_start, outhdr_length));
attach_fp_info(pinfo, direction, protocol_name,
atoi((char*)tvb_get_ephemeral_string(tvb, variant_start, variant_length)));
}
/* Note that the first item of pinfo->pseudo_header->dct2000 will contain
the pseudo-header needed (in some cases) by the wireshark dissector that
this packet data will be handed off to. */
/***********************************************************************/
/* Now hand off to the dissector of intended packet encapsulation type */
/* Get protocol handle, and set p2p_dir where necessary.
(packet-frame.c won't copy it from pseudo-header because it doesn't
know about Catapult DCT2000 encap type...)
*/
switch (encap)
{
case WTAP_ENCAP_RAW_IP:
protocol_handle = find_dissector("ip");
break;
case WTAP_ENCAP_ETHERNET:
protocol_handle = find_dissector("eth_withoutfcs");
break;
case WTAP_ENCAP_ISDN:
protocol_handle = find_dissector("lapd");
pinfo->p2p_dir = pinfo->pseudo_header->isdn.uton;
break;
case WTAP_ENCAP_ATM_PDUS_UNTRUNCATED:
protocol_handle = find_dissector("atm_untruncated");
break;
case WTAP_ENCAP_PPP:
protocol_handle = find_dissector("ppp_hdlc");
pinfo->p2p_dir = pinfo->pseudo_header->p2p.sent;
break;
case DCT2000_ENCAP_SSCOP:
protocol_handle = find_dissector("sscop");
break;
case WTAP_ENCAP_FRELAY:
protocol_handle = find_dissector("fr");
break;
case DCT2000_ENCAP_MTP2:
protocol_handle = find_dissector("mtp2");
break;
case DCT2000_ENCAP_NBAP:
protocol_handle = find_dissector("nbap");
break;
case DCT2000_ENCAP_UNHANDLED:
/**********************************************************/
/* The wiretap module wasn't able to set an encapsulation */
/* type, but it may still be possible to dissect the data */
/* if we know about the protocol or if we can recognise */
/* and parse or skip a primitive header */
/**********************************************************/
/* Show context.port in src or dest column as appropriate */
if (check_col(pinfo->cinfo, COL_DEF_SRC) && direction == 0)
{
col_add_fstr(pinfo->cinfo, COL_DEF_SRC,
"%s.%u",
tvb_get_ephemeral_string(tvb, 0, context_length),
port_number);
}
else
if (check_col(pinfo->cinfo, COL_DEF_DST) && direction == 1)
{
col_add_fstr(pinfo->cinfo, COL_DEF_DST,
"%s.%u",
tvb_get_ephemeral_string(tvb, 0, context_length),
port_number);
}
/* Work with generic XML protocol.
This is a bit of a hack, but xml isn't really a proper
encapsulation type... */
if (strcmp(protocol_name, "xml") == 0)
{
protocol_handle = find_dissector("xml");
}
else
/* Attempt to show tty messages as raw text */
if (strcmp(protocol_name, "tty") == 0)
{
dissect_tty_lines(tvb, pinfo, dct2000_tree, offset);
return;
}
else
if (strcmp(protocol_name, "sipprim") == 0)
{
protocol_handle = find_dissector("sipprim");
}
/* Many DCT2000 protocols have at least one IPPrim variant. If the
protocol name can be matched to a dissector, try to find the
UDP/TCP data inside and dissect it.
*/
if (!protocol_handle && catapult_dct2000_try_ipprim_heuristic)
{
guint32 source_addr_offset = 0, dest_addr_offset = 0;
guint8 source_addr_length = 0, dest_addr_length = 0;
guint32 source_port_offset = 0, dest_port_offset = 0;
port_type type_of_port = PT_NONE;
guint16 conn_id_offset = 0;
int offset_before_ipprim_header = offset;
/* Will give up if couldn't match protocol anyway... */
heur_protocol_handle = look_for_dissector(protocol_name);
if ((heur_protocol_handle != 0) &&
find_ipprim_data_offset(tvb, &offset, direction,
&source_addr_offset, &source_addr_length,
&dest_addr_offset, &dest_addr_length,
&source_port_offset, &dest_port_offset,
&type_of_port,
&conn_id_offset))
{
proto_tree *ipprim_tree;
proto_item *ti;
/* Will use this dissector then. */
protocol_handle = heur_protocol_handle;
/* Add address parameters to tree */
/* Unfortunately can't automatically create a conversation filter for this...
I *could* create a fake IP header from these details, but then it would be tricky
to get the FP dissector called as it has no well-known ports or heuristics... */
ti = proto_tree_add_string_format(dct2000_tree, hf_catapult_dct2000_ipprim_addresses,
tvb, offset_before_ipprim_header, 0,
"", "IPPrim transport (%s): %s:%u -> %s:%u",
(type_of_port == PT_UDP) ? "UDP" : "TCP",
(source_addr_offset) ?
((source_addr_length == 4) ?
(char *)get_hostname(tvb_get_ipv4(tvb, source_addr_offset)) :
"<ipv6-address>"
) :
"0.0.0.0",
(source_port_offset) ?
tvb_get_ntohs(tvb, source_port_offset) :
0,
(dest_addr_offset) ?
((source_addr_length == 4) ?
(char *)get_hostname(tvb_get_ipv4(tvb, dest_addr_offset)) :
"<ipv6-address>"
) :
"0.0.0.0",
(dest_port_offset) ?
tvb_get_ntohs(tvb, dest_port_offset) :
0);
if ((type_of_port == PT_TCP) && (conn_id_offset != 0)) {
proto_item_append_text(ti, " (conn_id=%u)", tvb_get_ntohs(tvb, conn_id_offset));
}
/* Add these IPPRIM fields inside an IPPRIM subtree */
ipprim_tree = proto_item_add_subtree(ti, ett_catapult_dct2000_ipprim);
/* Try to add right stuff to pinfo so conversation stuff works... */
pinfo->ptype = type_of_port;
switch (type_of_port) {
case PT_UDP:
pinfo->ipproto = IP_PROTO_UDP;
break;
case PT_TCP:
pinfo->ipproto = IP_PROTO_TCP;
break;
default:
pinfo->ipproto = IP_PROTO_NONE;
}
/* Add addresses & ports into ipprim tree.
Also set address info in pinfo for conversations... */
if (source_addr_offset != 0)
{
proto_item *addr_ti;
SET_ADDRESS(&pinfo->net_src,
(source_addr_length == 4) ? AT_IPv4 : AT_IPv6,
source_addr_length,
(tvb_get_ptr(tvb, source_addr_offset, source_addr_length)));
SET_ADDRESS(&pinfo->src,
(source_addr_length == 4) ? AT_IPv4 : AT_IPv6,
source_addr_length,
(tvb_get_ptr(tvb, source_addr_offset, source_addr_length)));
proto_tree_add_item(ipprim_tree,
(source_addr_length == 4) ?
hf_catapult_dct2000_ipprim_src_addr_v4 :
hf_catapult_dct2000_ipprim_src_addr_v6,
tvb, source_addr_offset, source_addr_length, FALSE);
/* Add hidden item for "side-less" addr */
addr_ti = proto_tree_add_item(ipprim_tree,
(source_addr_length == 4) ?
hf_catapult_dct2000_ipprim_addr_v4 :
hf_catapult_dct2000_ipprim_addr_v6,
tvb, source_addr_offset,
source_addr_length, FALSE);
PROTO_ITEM_SET_HIDDEN(addr_ti);
}
if (source_port_offset != 0)
{
proto_item *port_ti;
pinfo->srcport = tvb_get_ntohs(tvb, source_port_offset);
proto_tree_add_item(ipprim_tree,
(type_of_port == PT_UDP) ?
hf_catapult_dct2000_ipprim_udp_src_port :
hf_catapult_dct2000_ipprim_tcp_src_port,
tvb, source_port_offset, 2, FALSE);
port_ti = proto_tree_add_item(ipprim_tree,
(type_of_port == PT_UDP) ?
hf_catapult_dct2000_ipprim_udp_port :
hf_catapult_dct2000_ipprim_tcp_port,
tvb, source_port_offset, 2, FALSE);
PROTO_ITEM_SET_HIDDEN(port_ti);
}
if (dest_addr_offset != 0)
{
proto_item *addr_ti;
SET_ADDRESS(&pinfo->net_dst,
(dest_addr_length == 4) ? AT_IPv4 : AT_IPv6,
dest_addr_length,
(tvb_get_ptr(tvb, dest_addr_offset, dest_addr_length)));
SET_ADDRESS(&pinfo->dst,
(dest_addr_length == 4) ? AT_IPv4 : AT_IPv6,
dest_addr_length,
(tvb_get_ptr(tvb, dest_addr_offset, dest_addr_length)));
proto_tree_add_item(ipprim_tree,
(dest_addr_length == 4) ?
hf_catapult_dct2000_ipprim_dst_addr_v4 :
hf_catapult_dct2000_ipprim_dst_addr_v6,
tvb, dest_addr_offset, dest_addr_length, FALSE);
/* Add hidden item for "side-less" addr */
addr_ti = proto_tree_add_item(ipprim_tree,
(dest_addr_length == 4) ?
hf_catapult_dct2000_ipprim_addr_v4 :
hf_catapult_dct2000_ipprim_addr_v6,
tvb, dest_addr_offset, dest_addr_length, FALSE);
PROTO_ITEM_SET_HIDDEN(addr_ti);
}
if (dest_port_offset != 0)
{
proto_item *port_ti;
pinfo->destport = tvb_get_ntohs(tvb, dest_port_offset);
proto_tree_add_item(ipprim_tree,
(type_of_port == PT_UDP) ?
hf_catapult_dct2000_ipprim_udp_dst_port :
hf_catapult_dct2000_ipprim_tcp_dst_port,
tvb, dest_port_offset, 2, FALSE);
port_ti = proto_tree_add_item(ipprim_tree,
(type_of_port == PT_UDP) ?
hf_catapult_dct2000_ipprim_udp_port :
hf_catapult_dct2000_ipprim_tcp_port,
tvb, dest_port_offset, 2, FALSE);
PROTO_ITEM_SET_HIDDEN(port_ti);
}
if (conn_id_offset != 0)
{
proto_tree_add_item(ipprim_tree,
hf_catapult_dct2000_ipprim_conn_id,
tvb, conn_id_offset, 2, FALSE);
}
/* Set source and dest columns now (will be overwriiten if
src and dst IP addresses set) */
if (source_addr_offset && check_col(pinfo->cinfo, COL_DEF_SRC))
{
col_append_fstr(pinfo->cinfo, COL_DEF_SRC,
"(%s:%u)",
(char*)get_hostname(tvb_get_ipv4(tvb, source_addr_offset)),
tvb_get_ntohs(tvb, source_port_offset));
}
if (dest_addr_offset && check_col(pinfo->cinfo, COL_DEF_DST))
{
col_append_fstr(pinfo->cinfo, COL_DEF_DST,
"(%s:%u)",
(char*)get_hostname(tvb_get_ipv4(tvb, dest_addr_offset)),
tvb_get_ntohs(tvb, dest_port_offset));
}
/* Set length for IPPrim tree */
proto_item_set_len(ipprim_tree, offset - offset_before_ipprim_header);
}
}
/* Try SCTP Prim heuristic if configured to */
if (!protocol_handle && catapult_dct2000_try_sctpprim_heuristic)
{
guint32 dest_addr_offset = 0;
guint16 dest_addr_length = 0;
guint32 dest_port_offset = 0;
int offset_before_sctpprim_header = offset;
heur_protocol_handle = look_for_dissector(protocol_name);
if ((heur_protocol_handle != 0) &&
(find_sctpprim_variant1_data_offset(tvb, &offset,
&dest_addr_offset,
&dest_addr_length,
&dest_port_offset) ||
find_sctpprim_variant3_data_offset(tvb, &offset,
&dest_addr_offset,
&dest_addr_length,
&dest_port_offset)))
{
proto_tree *sctpprim_tree;
proto_item *ti;
/* Will use this dissector then. */
protocol_handle = heur_protocol_handle;
ti = proto_tree_add_string_format(dct2000_tree, hf_catapult_dct2000_sctpprim_addresses,
tvb, offset_before_sctpprim_header, 0,
"", "SCTPPrim transport: -> %s:%u",
(dest_addr_offset) ?
((dest_addr_length == 4) ?
(char *)get_hostname(tvb_get_ipv4(tvb, dest_addr_offset)) :
"<ipv6-address>"
) :
"0.0.0.0",
(dest_port_offset) ?
tvb_get_ntohs(tvb, dest_port_offset) :
0);
/* Add these SCTPPRIM fields inside an SCTPPRIM subtree */
sctpprim_tree = proto_item_add_subtree(ti, ett_catapult_dct2000_sctpprim);
pinfo->ipproto = IP_PROTO_SCTP;
/* Destination address */
if (dest_addr_offset != 0)
{
proto_item *addr_ti;
SET_ADDRESS(&pinfo->net_dst,
(dest_addr_length == 4) ? AT_IPv4 : AT_IPv6,
dest_addr_length,
(tvb_get_ptr(tvb, dest_addr_offset, dest_addr_length)));
SET_ADDRESS(&pinfo->dst,
(dest_addr_length == 4) ? AT_IPv4 : AT_IPv6,
dest_addr_length,
(tvb_get_ptr(tvb, dest_addr_offset, dest_addr_length)));
proto_tree_add_item(sctpprim_tree,
(dest_addr_length == 4) ?
hf_catapult_dct2000_sctpprim_dst_addr_v4 :
hf_catapult_dct2000_sctpprim_dst_addr_v6,
tvb, dest_addr_offset, dest_addr_length, FALSE);
/* Add hidden item for "side-less" addr */
addr_ti = proto_tree_add_item(sctpprim_tree,
(dest_addr_length == 4) ?
hf_catapult_dct2000_sctpprim_addr_v4 :
hf_catapult_dct2000_sctpprim_addr_v6,
tvb, dest_addr_offset, dest_addr_length, FALSE);
PROTO_ITEM_SET_HIDDEN(addr_ti);
}
if (dest_port_offset != 0)
{
pinfo->destport = tvb_get_ntohs(tvb, dest_port_offset);
proto_tree_add_item(sctpprim_tree,
hf_catapult_dct2000_sctpprim_dst_port,
tvb, dest_port_offset, 2, FALSE);
}
/* Set length for SCTPPrim tree */
proto_item_set_len(sctpprim_tree, offset - offset_before_sctpprim_header);
}
}
break;
default:
/* !! If get here, there is a mismatch between
this dissector and the wiretap module catapult_dct2000.c !!
*/
DISSECTOR_ASSERT_NOT_REACHED();
return;
}
/* Try appropriate dissector, if one has been selected */
if (protocol_handle != 0)
{
/* Dissect the remainder of the frame using chosen protocol handle */
next_tvb = tvb_new_subset(tvb, offset, -1, tvb_reported_length(tvb)-offset);
sub_dissector_result = call_dissector_only(protocol_handle, next_tvb, pinfo, tree);
}
if (protocol_handle == 0 || sub_dissector_result == 0)
{
/* Could get here because:
- encap is DCT2000_ENCAP_UNHANDLED and we still didn't handle it, OR
- desired protocol is unavailable (probably disabled), OR
- protocol rejected our data
Show remaining bytes as unparsed data */
proto_tree_add_item(dct2000_tree, hf_catapult_dct2000_unparsed_data,
tvb, offset, -1, FALSE);
if (check_col(pinfo->cinfo, COL_INFO))
{
col_add_fstr(pinfo->cinfo, COL_INFO,
"Not dissected (context=%s.%u t=%s %c prot=%s (v=%s))",
tvb_get_ephemeral_string(tvb, 0, context_length),
port_number,
tvb_get_ephemeral_string(tvb, timestamp_start, timestamp_length),
(direction == 0) ? 'S' : 'R',
tvb_get_ephemeral_string(tvb, protocol_start, protocol_length),
tvb_get_ephemeral_string(tvb, variant_start, variant_length));
}
}
else
{
/* Show number of dissected bytes */
if (dct2000_tree) {
proto_item *ti = proto_tree_add_uint(dct2000_tree,
hf_catapult_dct2000_dissected_length,
tvb, 0, 0, tvb_reported_length(tvb)-offset);
PROTO_ITEM_SET_GENERATED(ti);
}
}
}
/******************************************************************************/
/* Associate this protocol with the Catapult DCT2000 file encapsulation type. */
/******************************************************************************/
void proto_reg_handoff_catapult_dct2000(void)
{
dissector_handle_t catapult_dct2000_handle = find_dissector("dct2000");
dissector_add("wtap_encap", WTAP_ENCAP_CATAPULT_DCT2000,
catapult_dct2000_handle);
}
/****************************************/
/* Register the protocol */
/****************************************/
void proto_register_catapult_dct2000(void)
{
static hf_register_info hf[] =
{
{ &hf_catapult_dct2000_context,
{ "Context",
"dct2000.context", FT_STRING, BASE_NONE, NULL, 0x0,
"Context name", HFILL
}
},
{ &hf_catapult_dct2000_port_number,
{ "Context Port number",
"dct2000.context_port", FT_UINT8, BASE_DEC, NULL, 0x0,
"Context port number", HFILL
}
},
{ &hf_catapult_dct2000_timestamp,
{ "Timestamp",
"dct2000.timestamp", FT_DOUBLE, BASE_DEC, NULL, 0x0,
"File timestamp", HFILL
}
},
{ &hf_catapult_dct2000_protocol,
{ "DCT2000 protocol",
"dct2000.protocol", FT_STRING, BASE_NONE, NULL, 0x0,
"Original (DCT2000) protocol name", HFILL
}
},
{ &hf_catapult_dct2000_variant,
{ "Protocol variant",
"dct2000.variant", FT_STRING, BASE_NONE, NULL, 0x0,
"DCT2000 protocol variant", HFILL
}
},
{ &hf_catapult_dct2000_outhdr,
{ "Out-header",
"dct2000.outhdr", FT_STRING, BASE_NONE, NULL, 0x0,
"DCT2000 protocol outhdr", HFILL
}
},
{ &hf_catapult_dct2000_direction,
{ "Direction",
"dct2000.direction", FT_UINT8, BASE_DEC, VALS(direction_vals), 0x0,
"Frame direction (Sent or Received)", HFILL
}
},
{ &hf_catapult_dct2000_encap,
{ "Wireshark encapsulation",
"dct2000.encapsulation", FT_UINT8, BASE_DEC, VALS(encap_vals), 0x0,
"Wireshark frame encapsulation used", HFILL
}
},
{ &hf_catapult_dct2000_unparsed_data,
{ "Unparsed protocol data",
"dct2000.unparsed_data", FT_BYTES, BASE_NONE, NULL, 0x0,
"Unparsed DCT2000 protocol data", HFILL
}
},
{ &hf_catapult_dct2000_dissected_length,
{ "Dissected length",
"dct2000.dissected-length", FT_UINT16, BASE_DEC, NULL, 0x0,
"Number of bytes dissected by subdissector(s)", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_addresses,
{ "IPPrim Addresses",
"dct2000.ipprim", FT_STRING, BASE_NONE, NULL, 0x0,
"IPPrim Addresses", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_src_addr_v4,
{ "Source Address",
"dct2000.ipprim.src", FT_IPv4, BASE_NONE, NULL, 0x0,
"IPPrim IPv4 Source Address", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_src_addr_v6,
{ "Source Address",
"dct2000.ipprim.srcv6", FT_IPv6, BASE_NONE, NULL, 0x0,
"IPPrim IPv6 Source Address", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_dst_addr_v4,
{ "Destination Address",
"dct2000.ipprim.dst", FT_IPv4, BASE_NONE, NULL, 0x0,
"IPPrim IPv4 Destination Address", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_dst_addr_v6,
{ "Destination Address",
"dct2000.ipprim.dstv6", FT_IPv6, BASE_NONE, NULL, 0x0,
"IPPrim IPv6 Destination Address", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_addr_v4,
{ "Address",
"dct2000.ipprim.addr", FT_IPv4, BASE_NONE, NULL, 0x0,
"IPPrim IPv4 Address", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_addr_v6,
{ "Address",
"dct2000.ipprim.addrv6", FT_IPv6, BASE_NONE, NULL, 0x0,
"IPPrim IPv6 Address", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_udp_src_port,
{ "UDP Source Port",
"dct2000.ipprim.udp.srcport", FT_UINT16, BASE_DEC, NULL, 0x0,
"IPPrim UDP Source Port", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_udp_dst_port,
{ "UDP Destination Port",
"dct2000.ipprim.udp.dstport", FT_UINT16, BASE_DEC, NULL, 0x0,
"IPPrim UDP Destination Port", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_udp_port,
{ "UDP Port",
"dct2000.ipprim.udp.port", FT_UINT16, BASE_DEC, NULL, 0x0,
"IPPrim UDP Port", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_tcp_src_port,
{ "TCP Source Port",
"dct2000.ipprim.tcp.srcport", FT_UINT16, BASE_DEC, NULL, 0x0,
"IPPrim TCP Source Port", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_tcp_dst_port,
{ "TCP Destination Port",
"dct2000.ipprim.tcp.dstport", FT_UINT16, BASE_DEC, NULL, 0x0,
"IPPrim TCP Destination Port", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_tcp_port,
{ "TCP Port",
"dct2000.ipprim.tcp.port", FT_UINT16, BASE_DEC, NULL, 0x0,
"IPPrim TCP Port", HFILL
}
},
{ &hf_catapult_dct2000_ipprim_conn_id,
{ "Conn Id",
"dct2000.ipprim.conn-id", FT_UINT16, BASE_DEC, NULL, 0x0,
"IPPrim TCP Connection ID", HFILL
}
},
{ &hf_catapult_dct2000_sctpprim_addresses,
{ "SCTPPrim Addresses",
"dct2000.sctpprim", FT_STRING, BASE_NONE, NULL, 0x0,
"SCTPPrim Addresses", HFILL
}
},
{ &hf_catapult_dct2000_sctpprim_dst_addr_v4,
{ "Destination Address",
"dct2000.sctpprim.dst", FT_IPv4, BASE_NONE, NULL, 0x0,
"SCTPPrim IPv4 Destination Address", HFILL
}
},
{ &hf_catapult_dct2000_sctpprim_dst_addr_v6,
{ "Destination Address",
"dct2000.sctpprim.dstv6", FT_IPv6, BASE_NONE, NULL, 0x0,
"SCTPPrim IPv6 Destination Address", HFILL
}
},
{ &hf_catapult_dct2000_sctpprim_addr_v4,
{ "Address",
"dct2000.sctpprim.addr", FT_IPv4, BASE_NONE, NULL, 0x0,
"SCTPPrim IPv4 Address", HFILL
}
},
{ &hf_catapult_dct2000_sctpprim_addr_v6,
{ "Address",
"dct2000.sctpprim.addrv6", FT_IPv6, BASE_NONE, NULL, 0x0,
"SCTPPrim IPv6 Address", HFILL
}
},
{ &hf_catapult_dct2000_sctpprim_dst_port,
{ "UDP Destination Port",
"dct2000.sctprim.dstport", FT_UINT16, BASE_DEC, NULL, 0x0,
"SCTPPrim Destination Port", HFILL
}
},
{ &hf_catapult_dct2000_tty,
{ "tty contents",
"dct2000.tty", FT_NONE, BASE_NONE, NULL, 0x0,
"tty contents", HFILL
}
},
{ &hf_catapult_dct2000_tty_line,
{ "tty line",
"dct2000.tty-line", FT_STRING, BASE_NONE, NULL, 0x0,
"tty line", HFILL
}
},
};
static gint *ett[] =
{
&ett_catapult_dct2000,
&ett_catapult_dct2000_ipprim,
&ett_catapult_dct2000_sctpprim,
&ett_catapult_dct2000_tty
};
module_t *catapult_dct2000_module;
/* Register protocol. */
proto_catapult_dct2000 = proto_register_protocol("Catapult DCT2000 packet",
"DCT2000",
"dct2000");
proto_register_field_array(proto_catapult_dct2000, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* Allow dissector to find be found by name. */
register_dissector("dct2000", dissect_catapult_dct2000, proto_catapult_dct2000);
/* Preferences */
catapult_dct2000_module = prefs_register_protocol(proto_catapult_dct2000,
proto_reg_handoff_catapult_dct2000);
/* This preference no longer supported (introduces linkage dependency between
dissectors and wiretap) */
prefs_register_obsolete_preference(catapult_dct2000_module, "board_ports_only");
/* Determines whether for not-handled protocols we should try to parse it if:
- it looks like its embedded in an ipprim message, AND
- the DCT2000 protocol name can be matched to a wireshark dissector name */
prefs_register_bool_preference(catapult_dct2000_module, "ipprim_heuristic",
"Use IP Primitive heuristic",
"If a payload looks like its embedded in an "
"IP primitive message, and there is a wireshark "
"dissector matching the DCT2000 protocol name, "
"try parsing the payload using that dissector",
&catapult_dct2000_try_ipprim_heuristic);
/* Determines whether for not-handled protocols we should try to parse it if:
- it looks like its embedded in an sctpprim message, AND
- the DCT2000 protocol name can be matched to a wireshark dissector name */
prefs_register_bool_preference(catapult_dct2000_module, "sctpprim_heuristic",
"Use SCTP Primitive heuristic",
"If a payload looks like its embedded in an "
"SCTP primitive message, and there is a wireshark "
"dissector matching the DCT2000 protocol name, "
"try parsing the payload using that dissector",
&catapult_dct2000_try_sctpprim_heuristic);
}
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