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wireshark/packet-mtp3.c
Guy Harris 911bad80f0 Have two strings in an enum_val_t - one that's a short string that is 
convenient to put into a command line (no capital letters, no spaces to
require quotes), and one that's a detailed description for use in the
UI.  Allow either of them in the preferences file or "-o" option; use
the detailed description in the UI, and also use it when writing the
preferences out, so that the preference will be readable by older
versions of Ethereal (assuming the preference existed in that version).

Update "README.developer" to give more detail about an enum_val_t (and
to put the _t in), and to give a more detailed description of the
"radio_buttons" argument to "prefs_register_enum_preference()".

svn path=/trunk/; revision=10982
2004-05-24 02:25:21 +00:00

694 lines
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C
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/* packet-mtp3.c
* Routines for Message Transfer Part Level 3 dissection
*
* It is (hopefully) compliant to:
* ANSI T1.111.4-1996
* ITU-T Q.704 7/1996
* GF 001-9001 (Chinese ITU variant)
*
* Copyright 2001, Michael Tuexen <tuexen [AT] fh-muenster.de>
* Updated for ANSI and Chinese ITU support by Jeff Morriss <jeff.morriss[AT]ulticom.com>
*
* $Id: packet-mtp3.c,v 1.28 2004/05/24 02:25:19 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* Copied from README.developer
*
* 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 <string.h>
#include <glib.h>
#ifdef NEED_SNPRINTF_H
#include "snprintf.h"
#endif
#include <epan/packet.h>
#include "tap.h"
#include "prefs.h"
/* Initialize the protocol and registered fields */
static int proto_mtp3 = -1;
static int mtp3_tap = -1;
static module_t *mtp3_module;
static int hf_mtp3_service_indicator = -1;
static int hf_mtp3_network_indicator = -1;
static int hf_mtp3_itu_spare = -1;
static int hf_mtp3_ansi_priority = -1;
static int hf_mtp3_itu_opc = -1;
static int hf_mtp3_24bit_opc = -1;
static int hf_mtp3_ansi_opc = -1;
static int hf_mtp3_chinese_opc = -1;
static int hf_mtp3_opc_network = -1;
static int hf_mtp3_opc_cluster = -1;
static int hf_mtp3_opc_member = -1;
static int hf_mtp3_itu_dpc = -1;
static int hf_mtp3_24bit_dpc = -1;
static int hf_mtp3_ansi_dpc = -1;
static int hf_mtp3_chinese_dpc = -1;
static int hf_mtp3_dpc_network = -1;
static int hf_mtp3_dpc_cluster = -1;
static int hf_mtp3_dpc_member = -1;
static int hf_mtp3_itu_sls = -1;
static int hf_mtp3_ansi_5_bit_sls = -1;
static int hf_mtp3_ansi_8_bit_sls = -1;
static int hf_mtp3_chinese_itu_sls = -1;
/* Initialize the subtree pointers */
static gint ett_mtp3 = -1;
static gint ett_mtp3_sio = -1;
static gint ett_mtp3_label = -1;
static gint ett_mtp3_label_dpc = -1;
static gint ett_mtp3_label_opc = -1;
static dissector_table_t mtp3_sio_dissector_table;
#include <packet-mtp3.h>
Standard_Type mtp3_standard = ITU_STANDARD;
static gboolean mtp3_use_ansi_5_bit_sls = FALSE;
static mtp3_net_addr_fmt_e mtp3_net_addr_fmt = MTP3_NET_ADDR_FMT_DASHED;
static mtp3_addr_pc_t mtp3_addr_dpc, mtp3_addr_opc;
#define SIO_LENGTH 1
#define ITU_ROUTING_LABEL_LENGTH 4
#define ITU_HEADER_LENGTH (SIO_LENGTH + ITU_ROUTING_LABEL_LENGTH)
#define ITU_SLS_LENGTH 1
#define SIO_OFFSET 0
#define ITU_SLS_OFFSET (SIO_OFFSET + ITU_HEADER_LENGTH - ITU_SLS_LENGTH)
#define ITU_ROUTING_LABEL_OFFSET (SIO_OFFSET + SIO_LENGTH)
#define ITU_MTP_PAYLOAD_OFFSET (SIO_OFFSET + ITU_HEADER_LENGTH)
#define ANSI_SLS_LENGTH 1
#define ANSI_ROUTING_LABEL_LENGTH (ANSI_PC_LENGTH + ANSI_PC_LENGTH + ANSI_SLS_LENGTH)
#define ANSI_HEADER_LENGTH (SIO_LENGTH + ANSI_ROUTING_LABEL_LENGTH)
#define ANSI_ROUTING_LABEL_OFFSET (SIO_OFFSET + SIO_LENGTH)
#define ANSI_DPC_OFFSET ANSI_ROUTING_LABEL_OFFSET
#define ANSI_OPC_OFFSET (ANSI_DPC_OFFSET + ANSI_PC_LENGTH)
#define ANSI_SLS_OFFSET (ANSI_OPC_OFFSET + ANSI_PC_LENGTH)
#define ANSI_MTP_PAYLOAD_OFFSET (SIO_OFFSET + ANSI_HEADER_LENGTH)
#define SERVICE_INDICATOR_MASK 0x0F
#define SPARE_MASK 0x30
#define ANSI_PRIORITY_MASK SPARE_MASK
#define NETWORK_INDICATOR_MASK 0xC0
#define ITU_DPC_MASK 0x00003FFF
#define ITU_OPC_MASK 0x0FFFC000
#define ITU_SLS_MASK 0xF0000000
#define ANSI_NETWORK_MASK 0x0000FF
#define ANSI_CLUSTER_MASK 0x00FF00
#define ANSI_MEMBER_MASK 0xFF0000
#define ANSI_5BIT_SLS_MASK 0x1F
#define ANSI_8BIT_SLS_MASK 0xFF
#define CHINESE_ITU_SLS_MASK 0xF
static const value_string mtp3_service_indicator_code_vals[] = {
{ 0x0, "Signalling Network Management Message (SNM)" },
{ 0x1, "Maintenance Regular Message (MTN)" },
{ 0x2, "Maintenance Special Message (MTNS)" },
{ 0x3, "SCCP" },
{ 0x4, "TUP" },
{ 0x5, "ISUP" },
{ 0x6, "DUP (call and circuit related messages)" },
{ 0x7, "DUP (facility registration and cancellation message)" },
{ 0x8, "MTP testing user part" },
{ 0x9, "Spare" },
{ 0xa, "Spare" },
{ 0xb, "Spare" },
{ 0xc, "Spare" },
{ 0xd, "Spare" },
{ 0xe, "Spare" },
{ 0xf, "Spare" },
{ 0, NULL }
};
const value_string mtp3_service_indicator_code_short_vals[] = {
{ 0x0, "SNM" },
{ 0x1, "MTN" },
{ 0x2, "MTNS" },
{ 0x3, "SCCP" },
{ 0x4, "TUP" },
{ 0x5, "ISUP" },
{ 0x6, "DUP (CC)" },
{ 0x7, "DUP (FAC/CANC)" },
{ 0x8, "MTP Test" },
{ 0, NULL }
};
static const value_string network_indicator_vals[] = {
{ 0x0, "International network" },
{ 0x1, "Spare (for international use only)" },
{ 0x2, "National network" },
{ 0x3, "Reserved for national use" },
{ 0, NULL }
};
static dissector_handle_t data_handle;
/*
* helper routine to format address to string
*/
void
mtp3_addr_to_str_buf(
const guint8 *data,
gchar *buf)
{
mtp3_addr_pc_t *addr_pc_p = (mtp3_addr_pc_t *) data;
switch (mtp3_net_addr_fmt)
{
case MTP3_NET_ADDR_FMT_DEC:
switch (addr_pc_p->type)
{
case ITU_STANDARD:
sprintf(buf, "%u", addr_pc_p->pc & ITU_PC_MASK);
break;
default:
/* assuming 24-bit */
sprintf(buf, "%u", addr_pc_p->pc & ANSI_PC_MASK);
break;
}
break;
case MTP3_NET_ADDR_FMT_HEX:
switch (addr_pc_p->type)
{
case ITU_STANDARD:
sprintf(buf, "%x", addr_pc_p->pc & ITU_PC_MASK);
break;
default:
/* assuming 24-bit */
sprintf(buf, "%x", addr_pc_p->pc & ANSI_PC_MASK);
break;
}
break;
case MTP3_NET_ADDR_FMT_NI_DEC:
switch (addr_pc_p->type)
{
case ITU_STANDARD:
sprintf(buf, "%u:%u", addr_pc_p->ni, addr_pc_p->pc & ITU_PC_MASK);
break;
default:
/* assuming 24-bit */
sprintf(buf, "%u:%u", addr_pc_p->ni, addr_pc_p->pc & ANSI_PC_MASK);
break;
}
break;
case MTP3_NET_ADDR_FMT_NI_HEX:
switch (addr_pc_p->type)
{
case ITU_STANDARD:
sprintf(buf, "%u:%x", addr_pc_p->ni, addr_pc_p->pc & ITU_PC_MASK);
break;
default:
/* assuming 24-bit */
sprintf(buf, "%u:%x", addr_pc_p->ni, addr_pc_p->pc & ANSI_PC_MASK);
break;
}
break;
default:
/* FALLTHRU */
case MTP3_NET_ADDR_FMT_DASHED:
switch (addr_pc_p->type)
{
case ITU_STANDARD:
sprintf(buf, "%u-%u-%u",
(addr_pc_p->pc & 0x3800) >> 11,
((addr_pc_p->pc & 0x7f8) >> 3),
(addr_pc_p->pc & 0x07));
break;
default:
/* assuming 24-bit */
sprintf(buf, "%u-%u-%u",
(addr_pc_p->pc & ANSI_NETWORK_MASK),
((addr_pc_p->pc & ANSI_CLUSTER_MASK) >> 8),
((addr_pc_p->pc & ANSI_MEMBER_MASK) >> 16));
break;
}
break;
}
}
static void
dissect_mtp3_sio(tvbuff_t *tvb, packet_info *pinfo, proto_tree *mtp3_tree)
{
guint8 sio;
proto_item *sio_item;
proto_tree *sio_tree;
sio_item = proto_tree_add_text(mtp3_tree, tvb, SIO_OFFSET, SIO_LENGTH,
"Service information octet");
sio_tree = proto_item_add_subtree(sio_item, ett_mtp3_sio);
sio = tvb_get_guint8(tvb, SIO_OFFSET);
proto_tree_add_uint(sio_tree, hf_mtp3_network_indicator, tvb, SIO_OFFSET,
SIO_LENGTH, sio);
mtp3_addr_opc.ni = (sio & NETWORK_INDICATOR_MASK) >> 6;
mtp3_addr_dpc.ni = (sio & NETWORK_INDICATOR_MASK) >> 6;
switch(mtp3_standard){
case ANSI_STANDARD:
proto_tree_add_uint(sio_tree, hf_mtp3_ansi_priority, tvb, SIO_OFFSET,
SIO_LENGTH, sio);
break;
case ITU_STANDARD:
case CHINESE_ITU_STANDARD:
proto_tree_add_uint(sio_tree, hf_mtp3_itu_spare, tvb, SIO_OFFSET,
SIO_LENGTH, sio);
break;
}
proto_tree_add_uint(sio_tree, hf_mtp3_service_indicator, tvb, SIO_OFFSET,
SIO_LENGTH, sio);
/* Store the SI so that subidissectors know what SI this msg is */
pinfo->private_data = (void *)(sio & SERVICE_INDICATOR_MASK);
}
static void
dissect_mtp3_routing_label(tvbuff_t *tvb, packet_info *pinfo, proto_tree *mtp3_tree)
{
guint32 label, dpc = 0, opc = 0;
guint8 sls;
proto_item *label_item, *label_dpc_item, *label_opc_item;
proto_tree *label_tree, *label_dpc_tree, *label_opc_tree;
char pc[ANSI_PC_STRING_LENGTH];
int *hf_dpc_string;
int *hf_opc_string;
switch (mtp3_standard) {
case ITU_STANDARD:
label_item = proto_tree_add_text(mtp3_tree, tvb, ITU_ROUTING_LABEL_OFFSET,
ITU_ROUTING_LABEL_LENGTH, "Routing label");
label_tree = proto_item_add_subtree(label_item, ett_mtp3_label);
label = tvb_get_letohl(tvb, ITU_ROUTING_LABEL_OFFSET);
sls = tvb_get_guint8(tvb, ITU_SLS_OFFSET);
opc = (label & ITU_OPC_MASK) >> 14;
dpc = label & ITU_DPC_MASK;
label_dpc_item =
proto_tree_add_uint(label_tree, hf_mtp3_itu_dpc, tvb,
ITU_ROUTING_LABEL_OFFSET, ITU_ROUTING_LABEL_LENGTH,
label);
proto_item_append_text(label_dpc_item, " (%u-%u-%u)",
(dpc & 0x3800) >> 11,
((dpc & 0x7f8) >> 3),
(dpc & 0x07));
label_opc_item =
proto_tree_add_uint(label_tree, hf_mtp3_itu_opc, tvb,
ITU_ROUTING_LABEL_OFFSET, ITU_ROUTING_LABEL_LENGTH,
label);
proto_item_append_text(label_opc_item, " (%u-%u-%u)",
(opc & 0x3800) >> 11,
((opc & 0x7f8) >> 3),
(opc & 0x07));
proto_tree_add_uint(label_tree, hf_mtp3_itu_sls, tvb, ITU_SLS_OFFSET,
ITU_SLS_LENGTH, sls);
break;
case ANSI_STANDARD:
case CHINESE_ITU_STANDARD:
if (mtp3_standard == ANSI_STANDARD)
{
hf_dpc_string = &hf_mtp3_ansi_dpc;
hf_opc_string = &hf_mtp3_ansi_opc;
} else /* CHINESE_ITU_STANDARD */ {
hf_dpc_string = &hf_mtp3_chinese_dpc;
hf_opc_string = &hf_mtp3_chinese_opc;
}
/* Create the Routing Label Tree */
label_item = proto_tree_add_text(mtp3_tree, tvb, ANSI_ROUTING_LABEL_OFFSET,
ANSI_ROUTING_LABEL_LENGTH,
"Routing label");
label_tree = proto_item_add_subtree(label_item, ett_mtp3_label);
/* create the DPC tree */
dpc = tvb_get_ntoh24(tvb, ANSI_DPC_OFFSET);
snprintf(pc, sizeof(pc), "%d-%d-%d", (dpc & ANSI_NETWORK_MASK),
((dpc & ANSI_CLUSTER_MASK) >> 8),
((dpc & ANSI_MEMBER_MASK) >> 16));
label_dpc_item = proto_tree_add_string_format(label_tree, *hf_dpc_string,
tvb, ANSI_DPC_OFFSET,
ANSI_PC_LENGTH, pc,
"DPC (%s) (%u)", pc, dpc);
label_dpc_tree = proto_item_add_subtree(label_dpc_item, ett_mtp3_label_dpc);
proto_tree_add_uint(label_dpc_tree, hf_mtp3_dpc_member, tvb,
ANSI_DPC_OFFSET + ANSI_MEMBER_OFFSET, ANSI_NCM_LENGTH,
dpc);
proto_tree_add_uint(label_dpc_tree, hf_mtp3_dpc_cluster,tvb,
ANSI_DPC_OFFSET + ANSI_CLUSTER_OFFSET, ANSI_NCM_LENGTH,
dpc);
proto_tree_add_uint(label_dpc_tree, hf_mtp3_dpc_network,tvb,
ANSI_DPC_OFFSET + ANSI_NETWORK_OFFSET, ANSI_NCM_LENGTH,
dpc);
/* add full integer values of DPC as hidden for filtering purposes */
proto_tree_add_uint_hidden(label_dpc_tree, hf_mtp3_24bit_dpc, tvb, ANSI_DPC_OFFSET,
ANSI_PC_LENGTH, dpc);
/* create the OPC tree */
opc = tvb_get_ntoh24(tvb, ANSI_OPC_OFFSET);
snprintf(pc, sizeof(pc), "%d-%d-%d", (opc & ANSI_NETWORK_MASK),
((opc & ANSI_CLUSTER_MASK) >> 8),
((opc & ANSI_MEMBER_MASK) >> 16));
label_opc_item = proto_tree_add_string_format(label_tree, *hf_opc_string,
tvb, ANSI_OPC_OFFSET,
ANSI_PC_LENGTH, pc,
"OPC (%s) (%u)", pc, opc);
label_opc_tree = proto_item_add_subtree(label_opc_item, ett_mtp3_label_opc);
proto_tree_add_uint(label_opc_tree, hf_mtp3_opc_member, tvb,
ANSI_OPC_OFFSET + ANSI_MEMBER_OFFSET, ANSI_NCM_LENGTH,
opc);
proto_tree_add_uint(label_opc_tree, hf_mtp3_opc_cluster, tvb,
ANSI_OPC_OFFSET + ANSI_CLUSTER_OFFSET, ANSI_NCM_LENGTH,
opc);
proto_tree_add_uint(label_opc_tree, hf_mtp3_opc_network,tvb,
ANSI_OPC_OFFSET + ANSI_NETWORK_OFFSET, ANSI_NCM_LENGTH,
opc);
/* add full integer values of OPC as hidden for filtering purposes */
proto_tree_add_uint_hidden(label_opc_tree, hf_mtp3_24bit_opc, tvb, ANSI_OPC_OFFSET,
ANSI_PC_LENGTH, opc);
/* SLS */
if (mtp3_standard == ANSI_STANDARD)
{
if (mtp3_use_ansi_5_bit_sls)
proto_tree_add_item(label_tree, hf_mtp3_ansi_5_bit_sls, tvb,
ANSI_SLS_OFFSET, ANSI_SLS_LENGTH, TRUE);
else
proto_tree_add_item(label_tree, hf_mtp3_ansi_8_bit_sls, tvb,
ANSI_SLS_OFFSET, ANSI_SLS_LENGTH, TRUE);
} else /* CHINESE_ITU_STANDARD */ {
proto_tree_add_item(label_tree, hf_mtp3_chinese_itu_sls, tvb,
ANSI_SLS_OFFSET, ITU_SLS_LENGTH, FALSE);
}
break;
}
mtp3_addr_opc.type = mtp3_standard;
mtp3_addr_opc.pc = opc;
SET_ADDRESS(&pinfo->net_src, AT_SS7PC, sizeof(mtp3_addr_opc), (guint8 *) &mtp3_addr_opc);
mtp3_addr_dpc.type = mtp3_standard;
mtp3_addr_dpc.pc = dpc;
SET_ADDRESS(&pinfo->net_dst, AT_SS7PC, sizeof(mtp3_addr_dpc), (guint8 *) &mtp3_addr_dpc);
}
static void
dissect_mtp3_payload(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint8 sio;
guint8 service_indicator;
tvbuff_t *payload_tvb = NULL;
sio = tvb_get_guint8(tvb, SIO_OFFSET);
service_indicator = sio & SERVICE_INDICATOR_MASK;
switch (mtp3_standard) {
case ITU_STANDARD:
payload_tvb = tvb_new_subset(tvb, ITU_MTP_PAYLOAD_OFFSET, -1, -1);
break;
case ANSI_STANDARD:
case CHINESE_ITU_STANDARD:
payload_tvb = tvb_new_subset(tvb, ANSI_MTP_PAYLOAD_OFFSET, -1, -1);
break;
}
if (check_col(pinfo->cinfo, COL_INFO))
col_set_str(pinfo->cinfo, COL_INFO, "DATA ");
if (!dissector_try_port(mtp3_sio_dissector_table, service_indicator,
payload_tvb, pinfo, tree))
call_dissector(data_handle, payload_tvb, pinfo, tree);
}
/* Code to actually dissect the packets */
static void
dissect_mtp3(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
mtp3_tap_rec_t tap_rec;
/* Set up structures needed to add the protocol subtree and manage it */
proto_item *mtp3_item = NULL;
proto_tree *mtp3_tree = NULL;
/* Make entries in Protocol column on summary display */
if (check_col(pinfo->cinfo, COL_PROTOCOL))
switch(mtp3_standard) {
case ITU_STANDARD:
col_set_str(pinfo->cinfo, COL_PROTOCOL, "MTP3 (Int. ITU)");
break;
case ANSI_STANDARD:
col_set_str(pinfo->cinfo, COL_PROTOCOL, "MTP3 (ANSI)");
break;
case CHINESE_ITU_STANDARD:
col_set_str(pinfo->cinfo, COL_PROTOCOL, "MTP3 (Chin. ITU)");
break;
};
if (tree) {
/* create display subtree for the protocol */
switch (mtp3_standard) {
case ITU_STANDARD:
mtp3_item = proto_tree_add_item(tree, proto_mtp3, tvb, 0,
ITU_HEADER_LENGTH, TRUE);
break;
case ANSI_STANDARD:
case CHINESE_ITU_STANDARD:
mtp3_item = proto_tree_add_item(tree, proto_mtp3, tvb, 0,
ANSI_HEADER_LENGTH, TRUE);
break;
}
mtp3_tree = proto_item_add_subtree(mtp3_item, ett_mtp3);
}
memset(&mtp3_addr_opc, 0, sizeof(mtp3_addr_opc));
memset(&mtp3_addr_dpc, 0, sizeof(mtp3_addr_dpc));
/* Dissect the packet (even if !tree so can call sub-dissectors and update
* the source and destination address columns) */
dissect_mtp3_sio(tvb, pinfo, mtp3_tree);
dissect_mtp3_routing_label(tvb, pinfo, mtp3_tree);
tap_rec.addr_opc = mtp3_addr_opc;
tap_rec.addr_dpc = mtp3_addr_dpc;
tap_rec.si_code = (tvb_get_guint8(tvb, SIO_OFFSET) & SERVICE_INDICATOR_MASK);
tap_rec.size = tvb_length(tvb);
tap_queue_packet(mtp3_tap, pinfo, &tap_rec);
dissect_mtp3_payload(tvb, pinfo, tree);
}
void
proto_register_mtp3(void)
{
/* Setup list of header fields See Section 1.6.1 for details*/
static hf_register_info hf[] = {
{ &hf_mtp3_service_indicator,
{ "Service indicator", "mtp3.service_indicator",
FT_UINT8, BASE_HEX, VALS(mtp3_service_indicator_code_vals), SERVICE_INDICATOR_MASK,
"", HFILL }},
{ &hf_mtp3_network_indicator,
{ "Network indicator", "mtp3.network_indicator",
FT_UINT8, BASE_HEX, VALS(network_indicator_vals), NETWORK_INDICATOR_MASK,
"", HFILL }},
{ &hf_mtp3_itu_spare,
{ "Spare", "mtp3.spare",
FT_UINT8, BASE_HEX, NULL, SPARE_MASK,
"", HFILL }},
{ &hf_mtp3_ansi_priority,
{ "Priority", "mtp3.priority",
FT_UINT8, BASE_HEX, NULL, ANSI_PRIORITY_MASK,
"", HFILL }},
{ &hf_mtp3_itu_opc,
{ "OPC", "mtp3.opc",
FT_UINT32, BASE_DEC, NULL, ITU_OPC_MASK,
"", HFILL }},
{ &hf_mtp3_24bit_opc,
{ "OPC", "mtp3.opc",
FT_UINT32, BASE_DEC, NULL, ANSI_PC_MASK,
"", HFILL }},
{ &hf_mtp3_ansi_opc,
{ "DPC", "mtp3.ansi_opc",
FT_STRING, BASE_NONE, NULL, 0x0,
"", HFILL }},
{ &hf_mtp3_chinese_opc,
{ "DPC", "mtp3.chinese_opc",
FT_STRING, BASE_NONE, NULL, 0x0,
"", HFILL }},
{ &hf_mtp3_opc_network,
{ "OPC Network", "mtp3.opc.network",
FT_UINT24, BASE_DEC, NULL, ANSI_NETWORK_MASK,
"", HFILL }},
{ &hf_mtp3_opc_cluster,
{ "OPC Cluster", "mtp3.opc.cluster",
FT_UINT24, BASE_DEC, NULL, ANSI_CLUSTER_MASK,
"", HFILL }},
{ &hf_mtp3_opc_member,
{ "OPC Member", "mtp3.opc.member",
FT_UINT24, BASE_DEC, NULL, ANSI_MEMBER_MASK,
"", HFILL }},
{ &hf_mtp3_itu_dpc,
{ "DPC", "mtp3.dpc",
FT_UINT32, BASE_DEC, NULL, ITU_DPC_MASK,
"", HFILL }},
{ &hf_mtp3_24bit_dpc,
{ "DPC", "mtp3.dpc",
FT_UINT32, BASE_DEC, NULL, ANSI_PC_MASK,
"", HFILL }},
{ &hf_mtp3_ansi_dpc,
{ "DPC", "mtp3.ansi_dpc",
FT_STRING, BASE_NONE, NULL, 0x0,
"", HFILL }},
{ &hf_mtp3_chinese_dpc,
{ "DPC", "mtp3.chinese_dpc",
FT_STRING, BASE_NONE, NULL, 0x0,
"", HFILL }},
{ &hf_mtp3_dpc_network,
{ "DPC Network", "mtp3.dpc.network",
FT_UINT24, BASE_DEC, NULL, ANSI_NETWORK_MASK,
"", HFILL }},
{ &hf_mtp3_dpc_cluster,
{ "DPC Cluster", "mtp3.dpc.cluster",
FT_UINT24, BASE_DEC, NULL, ANSI_CLUSTER_MASK,
"", HFILL }},
{ &hf_mtp3_dpc_member,
{ "DPC Member", "mtp3.dpc.member",
FT_UINT24, BASE_DEC, NULL, ANSI_MEMBER_MASK,
"", HFILL }},
{ &hf_mtp3_itu_sls,
{ "Signalling Link Selector", "mtp3.sls",
FT_UINT32, BASE_DEC, NULL, ITU_SLS_MASK,
"", HFILL }},
{ &hf_mtp3_ansi_5_bit_sls,
{ "Signalling Link Selector", "mtp3.sls",
FT_UINT8, BASE_DEC, NULL, ANSI_5BIT_SLS_MASK,
"", HFILL }},
{ &hf_mtp3_ansi_8_bit_sls,
{ "Signalling Link Selector", "mtp3.sls",
FT_UINT8, BASE_DEC, NULL, ANSI_8BIT_SLS_MASK,
"", HFILL }},
{ &hf_mtp3_chinese_itu_sls,
{ "Signalling Link Selector", "mtp3.sls",
FT_UINT8, BASE_DEC, NULL, CHINESE_ITU_SLS_MASK,
"", HFILL }}
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_mtp3,
&ett_mtp3_sio,
&ett_mtp3_label,
&ett_mtp3_label_dpc,
&ett_mtp3_label_opc
};
static enum_val_t mtp3_options[] = {
{ "itu", "ITU", ITU_STANDARD },
{ "ansi", "ANSI", ANSI_STANDARD },
{ "chinese-itu", "Chinese ITU", CHINESE_ITU_STANDARD },
{ NULL, NULL, 0 }
};
static enum_val_t mtp3_net_addr_fmt_str_e[] = {
{ "decimal", "Decimal", MTP3_NET_ADDR_FMT_DEC },
{ "hexadecimal", "Hexadecimal", MTP3_NET_ADDR_FMT_HEX },
{ "ni-decimal", "NI-Decimal", MTP3_NET_ADDR_FMT_NI_DEC },
{ "ni-hexadecimal", "NI-Hexadecimal", MTP3_NET_ADDR_FMT_NI_HEX },
{ "dashed", "Dashed", MTP3_NET_ADDR_FMT_DASHED },
{ NULL, NULL, 0 }
};
/* Register the protocol name and description */
proto_mtp3 = proto_register_protocol("Message Transfer Part Level 3",
"MTP3", "mtp3");
register_dissector("mtp3", dissect_mtp3, proto_mtp3);
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_mtp3, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
mtp3_sio_dissector_table = register_dissector_table("mtp3.service_indicator",
"MTP3 Service indicator",
FT_UINT8, BASE_HEX);
mtp3_tap = register_tap("mtp3");
mtp3_module = prefs_register_protocol(proto_mtp3, NULL);
prefs_register_enum_preference(mtp3_module, "standard", "MTP3 standard",
"The SS7 standard used in MTP3 packets",
(gint *)&mtp3_standard, mtp3_options, FALSE);
prefs_register_bool_preference(mtp3_module, "ansi_5_bit_sls",
"Use 5-bit SLS (ANSI only)",
"Use 5-bit (instead of 8-bit) SLS in ANSI MTP3 packets",
&mtp3_use_ansi_5_bit_sls);
prefs_register_enum_preference(mtp3_module, "net_addr_format", "Network Address Format",
"Format for point code in the network address columns",
(gint *)&mtp3_net_addr_fmt, mtp3_net_addr_fmt_str_e, FALSE);
}
void
proto_reg_handoff_mtp3(void)
{
dissector_handle_t mtp3_handle;
mtp3_handle = create_dissector_handle(dissect_mtp3, proto_mtp3);
dissector_add("wtap_encap", WTAP_ENCAP_MTP3, mtp3_handle);
data_handle = find_dissector("data");
}
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