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/* packet-lge_monitor.c
* Routines for LGE Monitor packet dissection
* Copyright 2006, Anders Broman <anders.broman[at]ericsson.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* LGE Monitor is a trace tool from Nortel.
*/
#include "config.h"
#include <epan/packet.h>
void proto_reg_handoff_lge_monitor(void);
void proto_register_lge_monitor(void);
static dissector_handle_t lge_monitor_handle;
/* Initialize the protocol and registered fields */
static int proto_lge_monitor = -1;
static int hf_lge_monitor_dir = -1;
static int hf_lge_monitor_prot = -1;
static int hf_lge_monitor_length = -1;
static int hf_lge_monitor_data = -1;
/* Initialize the subtree pointers */
static int ett_lge_monitor = -1;
static int ett_lge_header = -1;
static dissector_handle_t mtp3_handle, m3ua_handle, sccp_handle, sctp_handle;
static const value_string lge_monitor_dir_vals[] = {
{ 0x00, "TX(Transmit Message Signaling Unit)" },
{ 0x01, "RX(Receive Message Signaling Unit)" },
{ 0, NULL }
};
static const value_string lge_monitor_prot_vals[] = {
{ 0x00, "MTP-3(Message Transfer Part 3)" },
{ 0x01, "SCCP(Signaling Connection Control Part)"},
{ 0x02, "SCTP(Stream Control Transmission Protocol)"},
{ 0x03, "M3UA(MTP-3 User Adaptation)"},
{ 0, NULL }
};
#define LGEMON_PROTO_HEADER_LENGTH 12
/* Code to actually dissect the packets */
static int
dissect_lge_monitor(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
int offset = 0;
guint32 lge_monitor_proto_id;
tvbuff_t* next_tvb = NULL;
proto_tree* header_tree;
/* Set up structures needed to add the protocol subtree and manage it */
proto_item *ti;
proto_tree *lge_monitor_tree;
/* Make entries in Protocol column and Info column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "LGE Monitor");
ti = proto_tree_add_item(tree, proto_lge_monitor, tvb, 0, LGEMON_PROTO_HEADER_LENGTH, ENC_NA);
lge_monitor_tree = proto_item_add_subtree(ti, ett_lge_monitor);
header_tree = proto_tree_add_subtree(lge_monitor_tree, tvb, offset, LGEMON_PROTO_HEADER_LENGTH, ett_lge_header, NULL, "LGE Monitor PDU");
proto_tree_add_item(header_tree, hf_lge_monitor_dir, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
lge_monitor_proto_id = tvb_get_ntohl(tvb,offset);
proto_tree_add_item(header_tree, hf_lge_monitor_prot, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(header_tree, hf_lge_monitor_length, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
next_tvb = tvb_new_subset_remaining(tvb, offset);
switch (lge_monitor_proto_id){
case 0: /* MTP3 */
call_dissector(mtp3_handle, next_tvb, pinfo, tree);
break;
case 1: /* SCCP */
call_dissector(sccp_handle, next_tvb, pinfo, tree);
break;
case 2: /* SCTP */
call_dissector(sctp_handle, next_tvb, pinfo, tree);
break;
case 3: /* M3UA */
call_dissector(m3ua_handle, next_tvb, pinfo, tree);
break;
default:
proto_tree_add_item(lge_monitor_tree, hf_lge_monitor_data, tvb, offset, -1, ENC_NA);
break;
}
return tvb_captured_length(tvb);
}
void
proto_reg_handoff_lge_monitor(void)
{
dissector_add_for_decode_as_with_preference("udp.port", lge_monitor_handle);
mtp3_handle = find_dissector_add_dependency("mtp3", proto_lge_monitor);
m3ua_handle = find_dissector_add_dependency("m3ua", proto_lge_monitor);
sccp_handle = find_dissector_add_dependency("sccp", proto_lge_monitor);
sctp_handle = find_dissector_add_dependency("sctp", proto_lge_monitor);
}
void
proto_register_lge_monitor(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_lge_monitor_dir,
{ "Direction", "lge_monitor.dir",
FT_UINT32, BASE_DEC, VALS(lge_monitor_dir_vals), 0x0,
NULL, HFILL }
},
{ &hf_lge_monitor_prot,
{ "Protocol Identifier", "lge_monitor.prot",
FT_UINT32, BASE_DEC, VALS(lge_monitor_prot_vals), 0x0,
NULL, HFILL }
},
{ &hf_lge_monitor_length,
{ "Payload Length", "lge_monitor.length",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_lge_monitor_data,
{ "LGE Monitor data", "lge_monitor.monitor_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_lge_monitor,
&ett_lge_header
};
/* Register the protocol name and description */
proto_lge_monitor = proto_register_protocol("LGE Monitor","LGE_Monitor", "lge_monitor");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_lge_monitor, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* Register the dissector */
lge_monitor_handle = register_dissector("lge_monitor", dissect_lge_monitor, proto_lge_monitor);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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