forked from osmocom/wireshark
658 lines
27 KiB
C
658 lines
27 KiB
C
/* packet-osi-options.c
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* Routines for the decode of ISO/OSI option part
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* Covers:
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* ISO 8473 CLNP (ConnectionLess Mode Network Service Protocol)
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* ISO 10589 ISIS (Intradomain Routing Information Exchange Protocol)
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* ISO 9542 ESIS (End System To Intermediate System Routing Exchange Protocol)
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*
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* Ralf Schneider <Ralf.Schneider@t-online.de>
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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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/expert.h>
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#include "packet-osi.h"
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#include "packet-osi-options.h"
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/* ATN traffic types (ICAO doc 9705 Edition3 SV5 5.6.2.2.6.7.3) */
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#define ATN_TT_ATSC_NO_PREFERENCE 0x01
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#define ATN_TT_ATSC_CLASS_A 0x10
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#define ATN_TT_ATSC_CLASS_B 0x11
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#define ATN_TT_ATSC_CLASS_C 0x12
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#define ATN_TT_ATSC_CLASS_D 0x13
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#define ATN_TT_ATSC_CLASS_E 0x14
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#define ATN_TT_ATSC_CLASS_F 0x15
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#define ATN_TT_ATSC_CLASS_G 0x16
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#define ATN_TT_ATSC_CLASS_H 0x17
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#define ATN_TT_AOC_NO_PREFERENCE 0x21
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#define ATN_TT_AOC_G 0x22
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#define ATN_TT_AOC_V 0x23
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#define ATN_TT_AOC_S 0x24
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#define ATN_TT_AOC_H 0x25
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#define ATN_TT_AOC_M 0x26
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#define ATN_TT_AOC_G_V 0x27
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#define ATN_TT_AOC_G_V_S 0x28
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#define ATN_TT_AOC_G_V_H_S 0x29
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#define ATN_TT_ADM_NO_PREFERENCE 0x30
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#define ATN_TT_SYS_MGMT_NO_PREFERENCE 0x60
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/* ATN security classification (ICAO doc 9705 Edition3 SV5 5.6.2.2.6.8.3) */
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#define ATN_SC_UNCLASSIFIED 0x01
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#define ATN_SC_RESTRICTED 0x02
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#define ATN_SC_CONFIDENTIAL 0x03
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#define ATN_SC_SECRET 0x04
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#define ATN_SC_TOP_SECRET 0x05
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/* ATN security label records */
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#define OSI_OPT_SECURITY_ATN_SR 0xc0
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#define OSI_OPT_SECURITY_ATN_TT 0x0f
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#define OSI_OPT_SECURITY_ATN_SC 0x03
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#define OSI_OPT_SECURITY_ATN_SR_LEN 6
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#define OSI_OPT_SECURITY_ATN_TT_LEN 1
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#define OSI_OPT_SECURITY_ATN_SC_LEN 1
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#define OSI_OPT_SECURITY_ATN_SI_MAX_LEN 8
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#define OSI_OPT_SECURITY 0xc5
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#define OSI_OPT_QOS_MAINTANANCE 0xc3
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#define OSI_OPT_PRIORITY 0xcd
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#define OSI_OPT_ADDRESS_MASK 0xe1
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#define OSI_OPT_SNPA_MASK 0xe2
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#define OSI_OPT_ES_CONFIG_TIMER 0xc6
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#define OSI_OPT_MAX_PRIORITY 0x0e
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#define OSI_OPT_PADDING 0xcc
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#define OSI_OPT_SOURCE_ROUTING 0xc8
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#define OSI_OPT_RECORD_OF_ROUTE 0xcb
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#define OSI_OPT_REASON_OF_DISCARD 0xc1
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#define OSI_OPT_SEC_MASK 0xc0
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#define OSI_OPT_SEC_RESERVED 0x00
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#define OSI_OPT_SEC_SRC_ADR_SPEC 0x01
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#define OSI_OPT_SEC_DST_ADR_SPEC 0x02
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#define OSI_OPT_SEC_GLOBAL_UNIQUE 0x03
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#define OSI_OPT_QOS_MASK 0xc0
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#define OSI_OPT_QOS_RESERVED 0x00
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#define OSI_OPT_QOS_SRC_ADR_SPEC 0x01
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#define OSI_OPT_QOS_DST_ADR_SPEC 0x02
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#define OSI_OPT_QOS_GLOBAL_UNIQUE 0x03
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#define OSI_OPT_QOS_SUB_MASK 0x3f
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#define OSI_OPT_QOS_SUB_RSVD 0x20
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#define OSI_OPT_QOS_SUB_SEQ_VS_TRS 0x10
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#define OSI_OPT_QOS_SUB_CONG_EXPED 0x08
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#define OSI_OPT_QOS_SUB_TSD_VS_COST 0x04
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#define OSI_OPT_QOS_SUB_RESERR_TRS 0x02
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#define OSI_OPT_QOS_SUB_RESERR_COST 0x01
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#define OSI_OPT_RFD_GENERAL 0x00
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#define OSI_OPT_RFD_ADDRESS 0x08
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#define OSI_OPT_RFD_SOURCE_ROUTING 0x09
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#define OSI_OPT_RFD_LIFETIME 0x0a
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#define OSI_OPT_RFD_PDU_DISCARDED 0x0b
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#define OSI_OPT_RFD_REASSEMBLY 0x0c
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#define OSI_OPT_RFD_MASK 0xf0
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#define OSI_OPT_RFD_SUB_MASK 0x0f
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extern gboolean clnp_decode_atn_options; /* as defined in packet-clnp.c */
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extern int hf_clnp_atntt; /* as defined in packet-clnp.c */
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extern int hf_clnp_atnsc; /* as defined in packet-clnp.c */
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/* Generated from convert_proto_tree_add_text.pl */
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static int hf_osi_options_address_mask = -1;
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static int hf_osi_options_transit_delay_vs_cost = -1;
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static int hf_osi_options_rtd_general = -1;
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static int hf_osi_options_residual_error_prob_vs_transit_delay = -1;
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static int hf_osi_options_qos_sequencing_vs_transit_delay = -1;
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static int hf_osi_options_rtd_address = -1;
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static int hf_osi_options_congestion_experienced = -1;
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static int hf_osi_options_esct = -1;
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static int hf_osi_options_rtd_reassembly = -1;
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static int hf_osi_options_qos_maintenance = -1;
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static int hf_osi_options_security_type = -1;
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static int hf_osi_options_route_recording = -1;
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static int hf_osi_options_last_hop = -1;
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static int hf_osi_options_route = -1;
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static int hf_osi_options_rtd_lifetime = -1;
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static int hf_osi_options_rtd_source_routing = -1;
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static int hf_osi_options_padding = -1;
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static int hf_osi_options_rfd_error_class = -1;
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static int hf_osi_options_snpa_mask = -1;
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static int hf_osi_options_source_routing = -1;
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static int hf_osi_options_priority = -1;
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static int hf_osi_options_qos_reserved = -1;
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static int hf_osi_options_residual_error_prob_vs_cost = -1;
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static int hf_osi_options_rtd_pdu_discarded = -1;
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static int hf_osi_options_rfd_field = -1;
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static gint ett_osi_options = -1;
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static gint ett_osi_qos = -1;
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static gint ett_osi_route = -1;
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static gint ett_osi_redirect = -1;
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static expert_field ei_osi_options_none = EI_INIT;
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static expert_field ei_osi_options_rfd_error_class = EI_INIT;
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static const guchar atn_security_registration_val[] = {
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0x06, 0x04, 0x2b, 0x1b, 0x00, 0x00
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}; /* =iso(1).org(3).ICAO(27).ATN(0).TrafficType(0)*/
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static const value_string osi_opt_sec_atn_sr_vals[] = {
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{OSI_OPT_SECURITY_ATN_SR, "ATN Security Label"},
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{0, NULL}
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};
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static const value_string osi_opt_sec_atn_si_vals[] = {
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{OSI_OPT_SECURITY_ATN_TT, "Traffic Type and Routing"},
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{OSI_OPT_SECURITY_ATN_SC, "Security classification"},
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{0, NULL}
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};
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static const value_string osi_opt_sec_atn_tt_vals[] = {
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{ATN_TT_ATSC_NO_PREFERENCE, "ATSC No preference"},
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{ATN_TT_ATSC_CLASS_A, "ATSC Class A"},
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{ATN_TT_ATSC_CLASS_B, "ATSC Class B"},
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{ATN_TT_ATSC_CLASS_C, "ATSC Class C"},
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{ATN_TT_ATSC_CLASS_D, "ATSC Class D"},
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{ATN_TT_ATSC_CLASS_E, "ATSC Class E"},
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{ATN_TT_ATSC_CLASS_F, "ATSC Class F"},
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{ATN_TT_ATSC_CLASS_G, "ATSC Class G"},
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{ATN_TT_ATSC_CLASS_H, "ATSC Class H"},
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{ATN_TT_AOC_NO_PREFERENCE, "AOC No preference"},
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{ATN_TT_AOC_G, "AOC Gatelink only"},
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{ATN_TT_AOC_V, "AOC VHF only"},
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{ATN_TT_AOC_S, "AOC Satellite only"},
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{ATN_TT_AOC_H, "AOC HF only"},
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{ATN_TT_AOC_M, "AOC Mode S only"},
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{ATN_TT_AOC_G_V, "AOC Gatelink first, then VHF"},
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{ATN_TT_AOC_G_V_S, "AOC Gatelink first, then VHF, then Satellite"},
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{ATN_TT_AOC_G_V_H_S, "AOC Gatelink first, then VHF, then HF, then Satellite"},
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{ATN_TT_ADM_NO_PREFERENCE, "ATN Administrative No preference"},
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{ATN_TT_SYS_MGMT_NO_PREFERENCE, "ATN Systems Management No preference"},
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{0, NULL}
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};
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static const value_string osi_opt_sec_atn_sc_vals[] = {
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{ATN_SC_UNCLASSIFIED, "unclassified"},
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{ATN_SC_RESTRICTED, "restricted"},
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{ATN_SC_CONFIDENTIAL, "confidential"},
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{ATN_SC_SECRET, "secret"},
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{ATN_SC_TOP_SECRET, "top secret"},
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{0, NULL}
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};
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static const value_string osi_opt_sec_vals[] = {
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{OSI_OPT_SEC_RESERVED, "Reserved"},
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{OSI_OPT_SEC_SRC_ADR_SPEC, "Source Address Specific"},
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{OSI_OPT_SEC_DST_ADR_SPEC, "Destination Address Specific"},
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{OSI_OPT_SEC_GLOBAL_UNIQUE, "Globally Unique"},
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{0, NULL}
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};
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static const value_string osi_opt_qos_vals[] = {
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{OSI_OPT_QOS_RESERVED, "Reserved"},
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{OSI_OPT_QOS_SRC_ADR_SPEC, "Source Address Specific"},
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{OSI_OPT_QOS_DST_ADR_SPEC, "Destination Address Specific"},
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{OSI_OPT_QOS_GLOBAL_UNIQUE, "Globally Unique"},
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{0, NULL}
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};
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static const value_string osi_opt_rfd_error_class[] = {
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{OSI_OPT_RFD_GENERAL, "General"},
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{OSI_OPT_RFD_ADDRESS, "Address"},
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{OSI_OPT_RFD_SOURCE_ROUTING, "Source Routing"},
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{OSI_OPT_RFD_LIFETIME, "Lifetime"},
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{OSI_OPT_RFD_PDU_DISCARDED, "PDU discarded"},
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{OSI_OPT_RFD_REASSEMBLY, "Reassembly"},
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{0, NULL}
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};
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static const value_string osi_opt_rfd_general[] = {
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{0x00, "Reason not specified"},
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{0x01, "Protocol procedure error"},
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{0x02, "Incorrect checksum"},
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{0x03, "PDU discarded due to congestion"},
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{0x04, "Header syntax error ( cannot be parsed )"},
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{0x05, "Segmentation needed but not permitted"},
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{0x06, "Incomplete PDU received"},
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{0x07, "Duplicate option"},
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{0, NULL}
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};
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static const value_string osi_opt_rfd_address[] = {
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{0x00, "Destination Address unreachable"},
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{0x01, "Destination Address unknown"},
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{0, NULL}
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};
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static const value_string osi_opt_rfd_src_route[] = {
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{0x00, "Unspecified source routing error"},
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{0x01, "Syntax error in source routing field"},
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{0x02, "Unknown address in source routing field"},
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{0x03, "Path not acceptable"},
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{0, NULL}
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};
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static const value_string osi_opt_rfd_lifetime[] = {
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{0x00, "Lifetime expired while data unit in transit"},
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{0x01, "Lifetime expired during reassembly"},
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{0, NULL}
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};
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static const value_string osi_opt_rfd_discarded[] = {
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{0x00, "Unsupported option not specified"},
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{0x01, "Unsupported protocol version"},
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{0x02, "Unsupported security option"},
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{0x03, "Unsupported source routing option"},
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{0x04, "Unsupported recording of route option"},
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{0, NULL}
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};
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static const value_string osi_opt_rfd_reassembly[] = {
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{0x00, "Reassembly interference"},
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{0, NULL} };
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static void
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dissect_option_qos(const guint8 qos, proto_tree *tree, tvbuff_t *tvb, int offset)
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{
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proto_item *ti;
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proto_tree *osi_qos_tree;
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ti = proto_tree_add_item(tree, hf_osi_options_qos_maintenance, tvb, offset, 1, ENC_BIG_ENDIAN);
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osi_qos_tree = proto_item_add_subtree(ti, ett_osi_qos);
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if ( ((qos & OSI_OPT_QOS_MASK) >> 6) == OSI_OPT_QOS_GLOBAL_UNIQUE) { /* Analye BIT field to get all Values */
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proto_tree_add_item(osi_qos_tree, hf_osi_options_qos_reserved, tvb, offset, 1, ENC_NA);
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proto_tree_add_item(osi_qos_tree, hf_osi_options_qos_sequencing_vs_transit_delay, tvb, offset, 1, ENC_NA);
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proto_tree_add_item(osi_qos_tree, hf_osi_options_congestion_experienced, tvb, offset, 1, ENC_NA);
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proto_tree_add_item(osi_qos_tree, hf_osi_options_transit_delay_vs_cost, tvb, offset, 1, ENC_NA);
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proto_tree_add_item(osi_qos_tree, hf_osi_options_residual_error_prob_vs_transit_delay, tvb, offset, 1, ENC_NA);
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proto_tree_add_item(osi_qos_tree, hf_osi_options_residual_error_prob_vs_cost, tvb, offset, 1, ENC_NA);
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}
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}
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static void
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dissect_option_route(guchar parm_type, int offset, guchar parm_len,
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tvbuff_t *tvb, proto_tree *tree )
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{
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guchar next_hop = 0;
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guint16 this_hop = 0;
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guchar netl = 0;
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guchar last_hop = 0;
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guchar cnt_hops = 0;
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guchar crr = 0;
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gchar* str;
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proto_tree *osi_route_tree = NULL;
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if ( parm_type == OSI_OPT_SOURCE_ROUTING ) {
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next_hop = tvb_get_guint8(tvb, offset + 1);
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netl = tvb_get_guint8(tvb, next_hop + 2);
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this_hop = offset + 2; /* points to first netl */
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proto_tree_add_uint_format_value(tree, hf_osi_options_source_routing, tvb, offset + next_hop, netl,
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tvb_get_guint8(tvb, offset), "%s ( Next Hop Highlighted In Data Buffer )",
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(tvb_get_guint8(tvb, offset) == 0) ? "Partial Source Routing" :
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"Complete Source Routing");
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}
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else if ( parm_type == OSI_OPT_RECORD_OF_ROUTE ) {
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crr = tvb_get_guint8(tvb, offset);
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last_hop = tvb_get_guint8(tvb, offset + 1);
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osi_route_tree = proto_tree_add_subtree(tree, tvb, offset, parm_len, ett_osi_route, NULL,
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(crr == 0) ? "Partial Route Recording" : "Complete Route Recording");
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/* Complete Route Recording or Partial Route Recording */
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proto_tree_add_uint_format_value(tree, hf_osi_options_route_recording, tvb, offset, 1, crr, "%s ",
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(crr == 0) ? "Partial Route Recording" :
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"Complete Route Recording");
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/* "last_hop" is either :
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* 0x03 : special value for no NET recorded yet.
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* 0xFF : special value telling there is no more place
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in the Route Recording Allocated Length and
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therefore next NETs won't be recorded.
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* Other value : Total length of recorded NETs so far.
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*/
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if ( last_hop == 0x03 )
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proto_tree_add_uint_format(osi_route_tree, hf_osi_options_last_hop, tvb, offset + 1, 1, last_hop,
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"No Network Entity Titles Recorded Yet");
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if ( last_hop == 0xFF )
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proto_tree_add_uint_format(osi_route_tree, hf_osi_options_last_hop, tvb, offset + 1, 1, last_hop,
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"Recording Terminated : No more space !");
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if ( last_hop == 255 || last_hop == 0x03 )
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this_hop = parm_len + 1; /* recording terminated,
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* or not begun, nothing to show */
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else
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this_hop = offset + 2; /* points to first netl */
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}
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while ( this_hop < offset + last_hop -2 ) { /* -2 for crr and last_hop */
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netl = tvb_get_guint8(tvb, this_hop);
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str = print_nsap_net(tvb, this_hop + 1, netl);
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proto_tree_add_string_format(osi_route_tree, hf_osi_options_route, tvb, this_hop, netl + 1, str,
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"Hop #%3u NETL: %2u, NET: %s", cnt_hops++, netl, str);
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this_hop += 1 + netl;
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}
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}
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static void
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dissect_option_rfd(const guchar error, const guchar field, int offset,
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guchar len _U_, tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo )
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{
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proto_item *ti;
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ti = proto_tree_add_item(tree, hf_osi_options_rfd_error_class, tvb, offset, 1, ENC_BIG_ENDIAN);
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switch ((error & OSI_OPT_RFD_MASK) >> 4)
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{
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case OSI_OPT_RFD_GENERAL:
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proto_tree_add_item(tree, hf_osi_options_rtd_general, tvb, offset, 1, ENC_BIG_ENDIAN);
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break;
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case OSI_OPT_RFD_ADDRESS:
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proto_tree_add_item(tree, hf_osi_options_rtd_address, tvb, offset, 1, ENC_BIG_ENDIAN);
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break;
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case OSI_OPT_RFD_SOURCE_ROUTING:
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proto_tree_add_item(tree, hf_osi_options_rtd_source_routing, tvb, offset, 1, ENC_BIG_ENDIAN);
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break;
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case OSI_OPT_RFD_LIFETIME:
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proto_tree_add_item(tree, hf_osi_options_rtd_lifetime, tvb, offset, 1, ENC_BIG_ENDIAN);
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break;
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case OSI_OPT_RFD_PDU_DISCARDED:
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proto_tree_add_item(tree, hf_osi_options_rtd_pdu_discarded, tvb, offset, 1, ENC_BIG_ENDIAN);
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break;
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case OSI_OPT_RFD_REASSEMBLY:
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proto_tree_add_item(tree, hf_osi_options_rtd_reassembly, tvb, offset, 1, ENC_BIG_ENDIAN);
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|
break;
|
|
default:
|
|
expert_add_info(pinfo, ti, &ei_osi_options_rfd_error_class);
|
|
}
|
|
|
|
proto_tree_add_uint(tree, hf_osi_options_rfd_field, tvb, offset + field, 1, field);
|
|
}
|
|
|
|
/* dissect ATN security label used for policy based interdomain routing.*/
|
|
/* For details see ICAO doc 9705 Edition 3 SV5 5.6.2.2.2.2 */
|
|
static void
|
|
dissect_option_atn_security_label(const guchar sub_type, guchar length,
|
|
tvbuff_t *tvb, guint offset,
|
|
proto_tree *tree)
|
|
{
|
|
proto_tree *atn_sl_tree;
|
|
guchar len = 0;
|
|
guint8 tag_name = 0;
|
|
guint security_info_end = 0;
|
|
|
|
/* check for ATN security label */
|
|
if ( OSI_OPT_SECURITY_ATN_SR != sub_type )
|
|
return;
|
|
|
|
/* check Security Registration Length */
|
|
len = tvb_get_guint8(tvb, ++offset);
|
|
if ( OSI_OPT_SECURITY_ATN_SR_LEN != len )
|
|
return;
|
|
|
|
/* check Security Registration ID */
|
|
if ( tvb_memeql(tvb, ++offset , atn_security_registration_val, OSI_OPT_SECURITY_ATN_SR_LEN) )
|
|
return;
|
|
|
|
atn_sl_tree = proto_tree_add_subtree(tree, tvb, offset, length, ett_osi_qos, NULL,
|
|
val_to_str(sub_type, osi_opt_sec_atn_sr_vals, "Unknown (0x%x)"));
|
|
|
|
offset += OSI_OPT_SECURITY_ATN_SR_LEN;
|
|
|
|
/* Security Information length */
|
|
len = tvb_get_guint8(tvb, offset);
|
|
|
|
if ( OSI_OPT_SECURITY_ATN_SI_MAX_LEN < len )
|
|
return;
|
|
|
|
offset++;
|
|
|
|
security_info_end = offset + len;
|
|
while ( offset < security_info_end ) {
|
|
/* check tag name length*/
|
|
len = tvb_get_guint8(tvb, offset); /* check tag name length*/
|
|
if ( len != 1 )
|
|
return;
|
|
|
|
offset++;
|
|
|
|
tag_name = tvb_get_guint8(tvb, offset);
|
|
offset++;
|
|
|
|
switch(tag_name) {
|
|
case OSI_OPT_SECURITY_ATN_TT:
|
|
/* check tag set length*/
|
|
len = tvb_get_guint8(tvb, offset);
|
|
if ( len != OSI_OPT_SECURITY_ATN_TT_LEN )
|
|
return;
|
|
|
|
offset++;
|
|
proto_tree_add_uint_format(atn_sl_tree, hf_clnp_atntt, tvb, offset, 1,
|
|
tvb_get_guint8(tvb, offset), "%s: %s",
|
|
val_to_str(OSI_OPT_SECURITY_ATN_TT, osi_opt_sec_atn_si_vals, "Unknown (0x%x)"),
|
|
val_to_str(tvb_get_guint8(tvb, offset ), osi_opt_sec_atn_tt_vals, "Unknown (0x%x)"));
|
|
offset += len;
|
|
break;
|
|
|
|
case OSI_OPT_SECURITY_ATN_SC:
|
|
/* check tag set length*/
|
|
len = tvb_get_guint8(tvb, offset);
|
|
if ( len != OSI_OPT_SECURITY_ATN_SC_LEN )
|
|
return;
|
|
|
|
offset++;
|
|
proto_tree_add_uint_format(atn_sl_tree, hf_clnp_atnsc, tvb, offset, 1,
|
|
tvb_get_guint8(tvb, offset), "%s: %s",
|
|
val_to_str(OSI_OPT_SECURITY_ATN_SC, osi_opt_sec_atn_si_vals, "Unknown (0x%x)"),
|
|
val_to_str(tvb_get_guint8(tvb, offset ), osi_opt_sec_atn_sc_vals, "Unknown (0x%x)"));
|
|
offset += len;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* ############################## Dissection Functions ###################### */
|
|
|
|
/*
|
|
* Name: dissect_osi_options()
|
|
*
|
|
* Description:
|
|
* Main entry area for esis de-mangling. This will build the
|
|
* main esis tree data and call the sub-protocols as needed.
|
|
*
|
|
* Input:
|
|
* guchar : length of option section
|
|
* tvbuff_t * : tvbuff containing packet data
|
|
* int : offset into packet where we are (packet_data[offset]== start
|
|
* of what we care about)
|
|
* proto_tree * : tree of display data. May be NULL.
|
|
*
|
|
* Output:
|
|
* void, but we will add to the proto_tree if it is not NULL.
|
|
*/
|
|
void
|
|
dissect_osi_options(guchar opt_len, tvbuff_t *tvb, int offset, proto_tree *tree, packet_info *pinfo)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *osi_option_tree = NULL;
|
|
guchar parm_len = 0;
|
|
guchar parm_type = 0;
|
|
guint8 octet;
|
|
|
|
osi_option_tree = proto_tree_add_subtree(tree, tvb, offset, opt_len,
|
|
ett_osi_options, &ti, "### Option Section ###");
|
|
if ( 0 == opt_len ) {
|
|
expert_add_info(pinfo, ti, &ei_osi_options_none);
|
|
return;
|
|
}
|
|
|
|
while ( 0 < opt_len ) {
|
|
parm_type = tvb_get_guint8(tvb, offset++);
|
|
parm_len = tvb_get_guint8(tvb, offset++);
|
|
|
|
switch ( parm_type ) {
|
|
case OSI_OPT_QOS_MAINTANANCE:
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
dissect_option_qos(octet, osi_option_tree, tvb, offset);
|
|
break;
|
|
|
|
case OSI_OPT_SECURITY:
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
if ( clnp_decode_atn_options ) {
|
|
dissect_option_atn_security_label(octet,parm_len,tvb, offset,
|
|
osi_option_tree);
|
|
} else {
|
|
ti = proto_tree_add_item(osi_option_tree, hf_osi_options_security_type, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_item_set_len(ti, parm_len);
|
|
}
|
|
break;
|
|
|
|
case OSI_OPT_PRIORITY:
|
|
octet = tvb_get_guint8(tvb, offset);
|
|
if ( OSI_OPT_MAX_PRIORITY >= octet ) {
|
|
ti = proto_tree_add_item(osi_option_tree, hf_osi_options_priority, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
} else {
|
|
ti = proto_tree_add_uint_format_value(osi_option_tree, hf_osi_options_priority, tvb, offset, 1,
|
|
octet, "%u ( Invalid )", octet);
|
|
}
|
|
proto_item_set_len(ti, parm_len);
|
|
break;
|
|
|
|
case OSI_OPT_ADDRESS_MASK:
|
|
proto_tree_add_bytes_format_value(osi_option_tree, hf_osi_options_address_mask, tvb, offset, parm_len,
|
|
NULL, "%s",
|
|
print_area(tvb, offset, parm_len));
|
|
break;
|
|
|
|
case OSI_OPT_SNPA_MASK:
|
|
proto_tree_add_item(osi_option_tree, hf_osi_options_snpa_mask, tvb, offset, parm_len, ENC_NA);
|
|
break;
|
|
|
|
case OSI_OPT_ES_CONFIG_TIMER:
|
|
ti = proto_tree_add_item(osi_option_tree, hf_osi_options_esct, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_item_set_len(ti, parm_len); break;
|
|
|
|
case OSI_OPT_PADDING:
|
|
proto_tree_add_item(osi_option_tree, hf_osi_options_padding, tvb, offset, parm_len, ENC_NA);
|
|
break;
|
|
|
|
case OSI_OPT_SOURCE_ROUTING:
|
|
case OSI_OPT_RECORD_OF_ROUTE:
|
|
dissect_option_route(parm_type, offset, parm_len, tvb,
|
|
osi_option_tree);
|
|
break;
|
|
|
|
case OSI_OPT_REASON_OF_DISCARD:
|
|
dissect_option_rfd(tvb_get_guint8(tvb, offset),
|
|
tvb_get_guint8(tvb, offset + 1), offset, parm_len,
|
|
tvb, osi_option_tree, pinfo);
|
|
break;
|
|
}
|
|
opt_len -= parm_len + 2;
|
|
offset += parm_len;
|
|
}
|
|
} /* dissect-osi-options */
|
|
|
|
|
|
/*
|
|
* Name: proto_register_osi_options()
|
|
*
|
|
* Description:
|
|
* main register for esis protocol set. We register some display
|
|
* formats and the protocol module variables.
|
|
*
|
|
* NOTE: this procedure to autolinked by the makefile process that
|
|
* builds register.c
|
|
*
|
|
* Input:
|
|
* void
|
|
*
|
|
* Output:
|
|
* void
|
|
*/
|
|
|
|
void
|
|
proto_register_osi_options(void) {
|
|
|
|
static hf_register_info hf[] =
|
|
{
|
|
/* Generated from convert_proto_tree_add_text.pl */
|
|
{ &hf_osi_options_qos_maintenance, { "Quality of service maintenance", "osi.options.qos.maintenance", FT_UINT8, BASE_DEC, VALS(osi_opt_qos_vals), OSI_OPT_QOS_MASK, NULL, HFILL }},
|
|
{ &hf_osi_options_qos_reserved, { "Reserved", "osi.options.qos.reserved", FT_BOOLEAN, 8, NULL, OSI_OPT_QOS_SUB_RSVD, NULL, HFILL }},
|
|
{ &hf_osi_options_qos_sequencing_vs_transit_delay, { "Sequencing versus transit delay", "osi.options.qos.seq_vs_trs", FT_BOOLEAN, 8, NULL, OSI_OPT_QOS_SUB_SEQ_VS_TRS, NULL, HFILL }},
|
|
{ &hf_osi_options_congestion_experienced, { "Congestion experienced", "osi.options.qos.cong_exped", FT_BOOLEAN, 8, NULL, OSI_OPT_QOS_SUB_CONG_EXPED, NULL, HFILL }},
|
|
{ &hf_osi_options_transit_delay_vs_cost, { "Transit delay versus cost", "osi.options.qos.tsd_vs_cost", FT_BOOLEAN, 8, NULL, OSI_OPT_QOS_SUB_TSD_VS_COST, NULL, HFILL }},
|
|
{ &hf_osi_options_residual_error_prob_vs_transit_delay, { "Residual error probability versus transit delay", "osi.options.qos.reserror_trs", FT_BOOLEAN, 8, NULL, OSI_OPT_QOS_SUB_RESERR_TRS, NULL, HFILL }},
|
|
{ &hf_osi_options_residual_error_prob_vs_cost, { "Residual error probability versus cost", "osi.options.qos.reserror_cost", FT_BOOLEAN, 8, NULL, OSI_OPT_QOS_SUB_RESERR_COST, NULL, HFILL }},
|
|
{ &hf_osi_options_source_routing, { "Source Routing", "osi.options.source_routing", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_osi_options_route_recording, { "Route Recording", "osi.options.route_recording", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_osi_options_last_hop, { "Last Hop", "osi.options.last_hop", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_osi_options_route, { "Route", "osi.options.route", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_osi_options_rfd_error_class, { "Error Class", "osi.options.rfd.error_class", FT_UINT8, BASE_DEC, VALS(osi_opt_rfd_error_class), OSI_OPT_RFD_MASK, NULL, HFILL }},
|
|
{ &hf_osi_options_rtd_general, { "Reason for discard {General}", "osi.options.rtd_general", FT_UINT8, BASE_DEC, VALS(osi_opt_rfd_general), OSI_OPT_RFD_SUB_MASK, NULL, HFILL }},
|
|
{ &hf_osi_options_rtd_address, { "Reason for discard {Address}", "osi.options.rtd_address", FT_UINT8, BASE_DEC, VALS(osi_opt_rfd_address), OSI_OPT_RFD_SUB_MASK, NULL, HFILL }},
|
|
{ &hf_osi_options_rtd_source_routing, { "Reason for discard {Source Routing}", "osi.options.rtd_source_routing", FT_UINT8, BASE_DEC, VALS(osi_opt_rfd_src_route), OSI_OPT_RFD_SUB_MASK, NULL, HFILL }},
|
|
{ &hf_osi_options_rtd_lifetime, { "Reason for discard {Lifetime}", "osi.options.rtd_lifetime", FT_UINT8, BASE_DEC, VALS(osi_opt_rfd_lifetime), OSI_OPT_RFD_SUB_MASK, NULL, HFILL }},
|
|
{ &hf_osi_options_rtd_pdu_discarded, { "Reason for discard {PDU discarded}", "osi.options.rtd_pdu_discarded", FT_UINT8, BASE_DEC, VALS(osi_opt_rfd_discarded), OSI_OPT_RFD_SUB_MASK, NULL, HFILL }},
|
|
{ &hf_osi_options_rtd_reassembly, { "Reason for discard {Reassembly}", "osi.options.rtd_reassembly", FT_UINT8, BASE_DEC, VALS(osi_opt_rfd_reassembly), OSI_OPT_RFD_SUB_MASK, NULL, HFILL }},
|
|
{ &hf_osi_options_rfd_field, { "Field", "osi.options.rfd.field", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_osi_options_security_type, { "Security type", "osi.options.security_type", FT_UINT8, BASE_DEC, VALS(osi_opt_sec_vals), OSI_OPT_SEC_MASK, NULL, HFILL }},
|
|
{ &hf_osi_options_priority, { "Priority", "osi.options.priority", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_osi_options_address_mask, { "Address Mask", "osi.options.address_mask", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_osi_options_snpa_mask, { "SNPA Mask", "osi.options.snpa_mask", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_osi_options_esct, { "ESCT (seconds)", "osi.options.esct", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_osi_options_padding, { "Padding", "osi.options.padding", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_osi_options,
|
|
&ett_osi_qos,
|
|
&ett_osi_route,
|
|
&ett_osi_redirect
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_osi_options_none, { "osi.options.none", PI_PROTOCOL, PI_NOTE, "No Options for this PDU", EXPFILL }},
|
|
{ &ei_osi_options_rfd_error_class, { "osi.options.rfd.error_class.unknown", PI_PROTOCOL, PI_WARN, "UNKNOWN Error Class", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t *expert_osi_options;
|
|
|
|
proto_register_field_array(proto_osi, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_osi_options = expert_register_protocol(proto_osi);
|
|
expert_register_field_array(expert_osi_options, ei, array_length(ei));
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|
|
|