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|
/* packet-nsrp.c
* Routines for the Juniper Netscreen Redundant Protocol (NSRP)
*
* Secfire <secfire@gmail.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/*
*
* NSRP update information can be found at www.juniper.net
*
*
*
* NSRP Packet Header is defined as follow:
*
* 1 2 3 4 5 6 7 8
* +--------+--------+--------+--------+--------+--------+--------+--------+
* |Version | Type |Clust ID|MSG Flag| Length |HA Port |Not Used|
* +--------+--------+--------+--------+--------+--------+--------+--------+
* | Destination Unit | Source Unit |
* +--------+--------+--------+--------+--------+--------+--------+--------+
*
*
*
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/etypes.h>
void proto_register_nsrp(void);
void proto_reg_handoff_nsrp(void);
static dissector_handle_t nsrp_handle;
#define NSRP_MIN_LEN 32
/* Initialize the protocol and registered fields */
static int proto_nsrp = -1;
static int hf_nsrp_version = -1;
static int hf_nsrp_msg_type = -1;
static int hf_nsrp_clust_id = -1;
static int hf_nsrp_msg_flag = -1;
static int hf_nsrp_len = -1;
static int hf_nsrp_ha_port = -1;
static int hf_nsrp_not_used = -1;
static int hf_nsrp_dst_unit = -1;
static int hf_nsrp_src_unit = -1;
static int hf_nsrp_msgtype = -1;
static int hf_nsrp_wst_group = -1;
static int hf_nsrp_hst_group = -1;
static int hf_nsrp_msgflag = -1;
static int hf_nsrp_authflag = -1;
static int hf_nsrp_priority = -1;
static int hf_nsrp_dummy = -1;
static int hf_nsrp_authchecksum = -1;
static int hf_nsrp_ifnum = -1;
/* Dada defined for HA Message */
static int hf_nsrp_msglen = -1;
static int hf_nsrp_encflag = -1;
/* static int hf_nsrp_notused = -1; */
static int hf_nsrp_total_size = -1;
static int hf_nsrp_ns = -1;
static int hf_nsrp_nr = -1;
static int hf_nsrp_no_used = -1;
static int hf_nsrp_checksum = -1;
static int hf_nsrp_data = -1;
static const value_string nsrp_msg_type_vals[] = {
{ 0x01, "HA MESSAGE" },
{ 0x02, "MNG MESSAGE" },
{ 0x03, "DADA MESSAGE" },
{ 0, NULL }
};
static const value_string nsrp_msgtype_vals[] = {
{ 0x01, "CREATE SESSION" },
{ 0x02, "CLOSE SESSION" },
{ 0x03, "CHANG SESSION" },
{ 0x04, "CREATE SP SESSION" },
{ 0x05, "SYS CONFIG" },
{ 0x06, "FILE SYS" },
{ 0x07, "CMD WEB" },
{ 0x08, "SAVE SLAVE" },
{ 0x09, "VPN SPI" },
{ 0x0a, "ARP" },
{ 0x0b, "HEALTH CHECK" },
{ 0x0c, "EMW DATA" },
{ 0x0d, "INVITE SYNC" },
{ 0x0e, "DOWNLOAD CONFIG" },
{ 0x0f, "L2TP TUNL CREATE" },
{ 0x10, "L2TP TUNL DELETE" },
{ 0x11, "L2TP CALL CREATE" },
{ 0x12, "L2TP CALL DELETE" },
{ 0x13, "PKI SYNC" },
{ 0x14, "VPN SEQ" },
{ 0x15, "MAX" },
{ 0, NULL }
};
static const value_string nsrp_flag_vals[] = {
{ 0x80, "ENCRYPT MESSAGE" },
{ 0x40, "CLOSE SESSION" },
{ 0x20, "CHANG SESSION" },
{ 0x10, "CREATE SP SESSION" },
{ 0x08, "SYS CONFIG" },
{ 0x04, "FILE SYS" },
{ 0x02, "CMD WEB" },
{ 0, NULL }
};
static const value_string nsrp_encflag_vals[] = {
{ 0xf0, "ENCRYPT METHOD MASK" },
{ 0x0f, "ENCRYPT PAD BIT MASK" },
{ 0, NULL }
};
/* Initialize the subtree pointers */
static gint ett_nsrp = -1;
/* Code to actually dissect the packets */
static int
dissect_nsrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_item *ti;
proto_tree *nsrp_tree = NULL;
gint offset = 0;
guint8 msgtype = 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "NSRP");
col_set_str(pinfo->cinfo, COL_INFO, "NSRP Protocol");
if (tree) {
ti = proto_tree_add_item(tree, proto_nsrp, tvb, 0, -1, ENC_NA);
nsrp_tree = proto_item_add_subtree(ti, ett_nsrp);
proto_tree_add_item(nsrp_tree, hf_nsrp_version, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
msgtype = tvb_get_guint8(tvb, offset);
proto_tree_add_item(nsrp_tree, hf_nsrp_msg_type, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_clust_id, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_msg_flag, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_len, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nsrp_tree, hf_nsrp_ha_port, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_dst_unit, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(nsrp_tree, hf_nsrp_src_unit, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
/*
*
*
* NSRP HA Packet is defined as follow:
*
* 1 2 3 4 5 6 7 8
* +--------+--------+--------+--------+--------+--------+--------+--------+
* | Type |WstGroup|HstGroup|MSG Flag| Length |Enc Flag|Not Used|
* +--------+--------+--------+--------+--------+--------+--------+--------+
* | Total Size | NS | NR |
* +--------+--------+--------+--------+--------+--------+--------+--------+
* | No Used | Checksum | Data |
* +--------+--------+--------+--------+-----------------------------------+
*
*
*/
if ( msgtype == 0x00 ) {
proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nsrp_tree, hf_nsrp_encflag, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_total_size, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(nsrp_tree, hf_nsrp_ns, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nsrp_tree, hf_nsrp_nr, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nsrp_tree, hf_nsrp_no_used, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_checksum(nsrp_tree, tvb, offset, hf_nsrp_checksum, -1, NULL, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
offset += 2;
proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, ENC_ASCII);
}
/*
*
* NSRP MNG Packet is defined as follow:
*
* 1 2 3 4 5 6 7 8
* +--------+--------+--------+--------+--------+--------+--------+--------+
* | Type |WstGroup|HstGroup|MSG Flag| Length |AuthFlag|Not Used|
* +--------+--------+--------+--------+--------+--------+--------+--------+
* |Priority+ Dummy + Auth CheckSum + Data |
* +--------+--------+--------+--------+-----------------------------------+
*
*
*/
if ( msgtype == 0x02 ) {
proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nsrp_tree, hf_nsrp_authflag, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_priority, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_dummy, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_checksum(nsrp_tree, tvb, offset, hf_nsrp_authchecksum, -1, NULL, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
offset += 2;
proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, ENC_ASCII);
}
/*
* NSRP DATA Packet is defined as follow:
*
* 1 2 3 4 5 6 7 8
* +--------+--------+--------+--------+--------+--------+--------+--------+
* | Type |WstGroup|HstGroup|MSG Flag| Length | Ifnum |Not Used|
* +--------+--------+--------+--------+--------+--------+--------+--------+
* | Total Size | Data |
* +--------+--------+--------+--------+-----------------------------------+
*
*
*/
if ( msgtype == 0x03 ) {
proto_tree_add_item(nsrp_tree, hf_nsrp_msgtype, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_wst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_hst_group, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_msgflag, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_msglen, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(nsrp_tree, hf_nsrp_ifnum, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_not_used, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(nsrp_tree, hf_nsrp_total_size, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(nsrp_tree, hf_nsrp_data, tvb, offset, -1, ENC_ASCII);
}
return tvb_captured_length(tvb);
}
void
proto_register_nsrp(void)
{
static hf_register_info hf[] = {
{ &hf_nsrp_version,
{ "Version", "nsrp.version",
FT_UINT8, BASE_DEC, NULL, 0,
"NSRP Version", HFILL }
},
{ &hf_nsrp_msg_type,
{ "Type", "nsrp.type",
FT_UINT8, BASE_DEC, VALS(nsrp_msg_type_vals), 0,
"NSRP Message Type", HFILL }
},
{ &hf_nsrp_clust_id,
{ "Clust ID", "nsrp.clustid",
FT_UINT8, BASE_DEC, NULL, 0,
"NSRP CLUST ID", HFILL }
},
{ &hf_nsrp_msg_flag,
{ "Flag", "nsrp.flag",
FT_UINT8, BASE_DEC, NULL, 0,
"NSRP FLAG", HFILL }
},
{ &hf_nsrp_len,
{ "Length", "nsrp.length",
FT_UINT16, BASE_DEC, NULL, 0,
"NSRP Length", HFILL }
},
{ &hf_nsrp_ha_port,
{ "Port", "nsrp.haport",
FT_UINT8, BASE_DEC, NULL, 0,
"NSRP HA Port", HFILL }
},
{ &hf_nsrp_not_used,
{ "Not used", "nsrp.notused",
FT_UINT8, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_nsrp_dst_unit,
{ "Destination", "nsrp.dst",
FT_UINT32, BASE_DEC, NULL, 0,
"DESTINATION UNIT INFORMATION", HFILL }
},
{ &hf_nsrp_src_unit,
{ "Source", "nsrp.src",
FT_UINT32, BASE_DEC, NULL, 0,
"SOURCE UNIT INFORMATION", HFILL }
},
{ &hf_nsrp_msgtype,
{ "MsgType", "nsrp.msgtype",
FT_UINT8, BASE_DEC, VALS(nsrp_msgtype_vals), 0,
"Message Type", HFILL }
},
{ &hf_nsrp_wst_group,
{ "Wst group", "nsrp.wst",
FT_UINT8, BASE_DEC, NULL, 0,
"NSRP WST GROUP", HFILL }
},
{ &hf_nsrp_hst_group,
{ "Hst group", "nsrp.hst",
FT_UINT8, BASE_DEC, NULL, 0,
"NSRP HST GROUP", HFILL }
},
{ &hf_nsrp_msgflag,
{ "Msgflag", "nsrp.msgflag",
FT_UINT8, BASE_DEC, VALS(nsrp_flag_vals), 0,
"NSRP MSG FLAG", HFILL }
},
{ &hf_nsrp_msglen,
{ "Msg Length", "nsrp.msglen",
FT_UINT16, BASE_DEC, NULL, 0,
"NSRP MESSAGE LENGTH", HFILL }
},
{ &hf_nsrp_encflag,
{ "Enc Flag", "nsrp.encflag",
FT_UINT8, BASE_DEC, VALS(nsrp_encflag_vals), 0,
"NSRP ENCRYPT FLAG", HFILL }
},
#if 0
{ &hf_nsrp_notused,
{ "Not Used", "nsrp.notused",
FT_UINT8, BASE_DEC, NULL, 0,
NULL, HFILL }
},
#endif
{ &hf_nsrp_total_size,
{ "Total Size", "nsrp.totalsize",
FT_UINT32, BASE_DEC, NULL, 0,
"NSRP MSG TOTAL MESSAGE", HFILL }
},
{ &hf_nsrp_ns,
{ "Ns", "nsrp.ns",
FT_UINT16, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_nsrp_nr,
{ "Nr", "nsrp.nr",
FT_UINT16, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_nsrp_no_used,
{ "Reserved", "nsrp.reserved",
FT_UINT16, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_nsrp_checksum,
{ "Checksum", "nsrp.checksum",
FT_UINT16, BASE_HEX, NULL, 0,
"NSRP PACKET CHECKSUM", HFILL }
},
{ &hf_nsrp_authflag,
{ "AuthFlag", "nsrp.authflag",
FT_UINT8, BASE_HEX, NULL, 0,
"NSRP Auth Flag", HFILL }
},
{ &hf_nsrp_priority,
{ "Priority", "nsrp.priority",
FT_UINT8, BASE_HEX, NULL, 0,
"NSRP Priority", HFILL }
},
{ &hf_nsrp_dummy,
{ "Dummy", "nsrp.dummy",
FT_UINT8, BASE_HEX, NULL, 0,
"NSRP Dummy", HFILL }
},
{ &hf_nsrp_authchecksum,
{ "Checksum", "nsrp.authchecksum",
FT_UINT16, BASE_HEX, NULL, 0,
"NSRP AUTH CHECKSUM", HFILL }
},
{ &hf_nsrp_ifnum,
{ "Ifnum", "nsrp.ifnum",
FT_UINT16, BASE_HEX, NULL, 0,
"NSRP IfNum", HFILL }
},
{ &hf_nsrp_data,
{ "Data", "nsrp.data",
FT_STRING, BASE_NONE, NULL, 0,
"PADDING", HFILL }
}
};
static gint *ett[] = {
&ett_nsrp
};
proto_nsrp = proto_register_protocol("Juniper Netscreen Redundant Protocol",
"NSRP", "nsrp");
proto_register_field_array(proto_nsrp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
nsrp_handle = register_dissector("nsrp", dissect_nsrp, proto_nsrp);
}
void
proto_reg_handoff_nsrp(void)
{
dissector_add_uint("ethertype", ETHERTYPE_NSRP, nsrp_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:
*/
|
