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/* packet-netgear-ensemble.c
*
* Routines for Netgear AP Ensemble Protocol
* Charlie Lenahan <clenahan@sonicbison.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
void proto_register_nge(void);
void proto_reg_handoff_nge(void);
static dissector_handle_t nge_handle;
#define NETGEAR_ENSEMBLE_PORT 4554
static int proto_nge;
static int hf_nge_version;
static int hf_nge_unknown;
static int hf_nge_unknown_int32;
static int hf_nge_sequence;
static int hf_nge_tlv_length;
static int hf_nge_ensemble_name;
static int hf_nge_firmware_name;
static int hf_nge_region_name;
static int hf_nge_firmware_version;
static int hf_nge_ap_name;
static int hf_nge_uptime;
static int hf_nge_mac;
static int hf_nge_ip;
static int hf_nge_uuid;
static gint ett_nge;
static gint ett_nge_lv;
static gint ett_nge_ensemble;
static void
dissect_nge_esemble(tvbuff_t *tvb,proto_tree *tree, int offset)
{
guint strLen=0;
guint32 length = tvb_get_guint32(tvb, offset,ENC_BIG_ENDIAN);
proto_tree *ensemble_tree = proto_tree_add_subtree(tree, tvb, offset, length+4, ett_nge_ensemble, NULL,"Ensemble");
proto_tree_add_uint(ensemble_tree, hf_nge_tlv_length, tvb, offset, 4, length);
offset += 4;
proto_tree_add_item(ensemble_tree, hf_nge_unknown, tvb, offset, 17, ENC_NA);
offset += 17;
/* type == 1 ? */
proto_tree_add_item(ensemble_tree, hf_nge_unknown_int32, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
/* uuid ? */
proto_tree_add_item(ensemble_tree, hf_nge_uuid, tvb, offset, 16, ENC_BIG_ENDIAN);
offset += 16;
proto_tree_add_item(ensemble_tree, hf_nge_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(ensemble_tree, hf_nge_unknown, tvb, offset, 20, ENC_NA);
offset += 20;
proto_tree_add_item(ensemble_tree, hf_nge_mac, tvb, offset, 6, ENC_NA);
offset += 6;
/* type == 2 ? */
proto_tree_add_item(ensemble_tree, hf_nge_unknown_int32, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item_ret_length(ensemble_tree, hf_nge_ensemble_name, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
offset += strLen;
proto_tree_add_item_ret_length(ensemble_tree, hf_nge_firmware_name, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
offset += strLen;
proto_tree_add_item_ret_length(ensemble_tree, hf_nge_region_name, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
offset += strLen;
/* type == 0 ? */
proto_tree_add_item(ensemble_tree, hf_nge_unknown_int32, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item_ret_length(ensemble_tree, hf_nge_firmware_version, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
offset += strLen;
proto_tree_add_item(ensemble_tree, hf_nge_unknown, tvb, offset, 16, ENC_NA);
offset += 16;
/* timestamp? */
proto_tree_add_item(ensemble_tree, hf_nge_uptime, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item_ret_length(ensemble_tree, hf_nge_ap_name, tvb, offset, 4, ENC_ASCII|ENC_BIG_ENDIAN, &strLen);
offset += strLen;
proto_tree_add_item(ensemble_tree, hf_nge_unknown, tvb, offset, -1, ENC_NA);
}
static int
dissect_nge(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
int offset = 0;
proto_item *ti = proto_tree_add_item(tree, proto_nge, tvb, 0, -1, ENC_NA);
proto_tree *nge_tree = proto_item_add_subtree(ti, ett_nge);
col_set_str(pinfo->cinfo, COL_PROTOCOL, "NGE");
/* Clear out stuff in the info column */
col_clear(pinfo->cinfo,COL_INFO);
/* presumed version */
proto_tree_add_item(nge_tree, hf_nge_version, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nge_tree, hf_nge_unknown, tvb, offset, 3, ENC_NA);
offset += 3;
proto_tree_add_item(nge_tree, hf_nge_sequence, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
dissect_nge_esemble(tvb, nge_tree, offset);
return tvb_captured_length(tvb);
}
void
proto_register_nge(void)
{
static hf_register_info hf[] = {
{ &hf_nge_version,
{ "Version", "nge.version",FT_UINT8, BASE_DEC,
NULL, 0x0,NULL, HFILL }},
{ &hf_nge_unknown,
{ "Unknown", "nge.unknown", FT_BYTES, BASE_NONE,
NULL, 0x0,NULL, HFILL }},
{ &hf_nge_unknown_int32,
{ "Unknown", "nge.unknown.int32", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_nge_sequence,
{ "Sequence", "nge.sequence", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_nge_uptime,
{ "Uptime", "nge.uptime", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_nge_mac,
{ "MAC", "nge.mac", FT_ETHER, BASE_NONE,
NULL, 0x0,NULL, HFILL }},
{ &hf_nge_ip,
{ "IP", "nge.ip", FT_IPv4, BASE_NONE,
NULL, 0x0,NULL, HFILL }},
{ &hf_nge_uuid,
{ "Device UUID", "nge.uuid", FT_GUID, BASE_NONE,
NULL, 0x0,NULL, HFILL }},
{ &hf_nge_ensemble_name,
{ "Ensemble Name", "nge.ensemble_name", FT_UINT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_nge_firmware_name,
{ "Firmware Name", "nge.firmware_name", FT_UINT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_nge_region_name,
{ "Region Name", "nge.region_name", FT_UINT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_nge_firmware_version,
{ "Firmware Version", "nge.firmware_version", FT_UINT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_nge_ap_name,
{ "AP Name", "nge.ap_name", FT_UINT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_nge_tlv_length,
{ "Length", "nge.tlv_len", FT_UINT32, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_nge,
&ett_nge_lv,
&ett_nge_ensemble
};
proto_nge = proto_register_protocol ("Netgear Ensemble Protocol", "NGE", "nge");
proto_register_field_array(proto_nge, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
nge_handle = register_dissector("nge", dissect_nge, proto_nge);
}
void
proto_reg_handoff_nge(void)
{
dissector_add_for_decode_as_with_preference("udp.port", nge_handle);
}
/*
* 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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