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