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wireshark/packet-mtp3.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 1.26 2004/02/29 08:30:10 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 <glib.h>
#ifdef NEED_SNPRINTF_H
#include "snprintf.h"
#endif
#include <epan/packet.h>
#include "prefs.h"
/* Initialize the protocol and registered fields */
static int proto_mtp3 = -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 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 }
};
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)
{
/* 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);
}
/* 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);
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(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_STANDARD },
{ "ANSI", ANSI_STANDARD },
{ "Chinese ITU", CHINESE_ITU_STANDARD },
{ NULL, 0 }
};
static enum_val_t mtp3_net_addr_fmt_str_e[] = {
{ "Decimal", MTP3_NET_ADDR_FMT_DEC },
{ "Hexadecimal", MTP3_NET_ADDR_FMT_HEX },
{ "NI-Decimal", MTP3_NET_ADDR_FMT_NI_DEC },
{ "NI-Hexadecimal", MTP3_NET_ADDR_FMT_NI_HEX },
{ "Dashed", MTP3_NET_ADDR_FMT_DASHED },
{ 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_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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