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wireshark/epan/dissectors/packet-osi-options.c
Jaap Keuter 3a08906ca7 Retrieve CLNP option values from the right place 
Use proper offsets when getting and presenting option values
for error reports. Limit the use of the error position
highlighting feature to 'field' only.

Bug: 12993
Change-Id: Ie9d6644203cf849dbb8efe15e87249a3aace3b5c
Reviewed-on: https://code.wireshark.org/review/18195
Reviewed-by: Jaap Keuter <jaap.keuter@xs4all.nl>
Petri-Dish: Jaap Keuter <jaap.keuter@xs4all.nl>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Jeff Morriss <jeff.morriss.ws@gmail.com>
2016-10-14 13:34:10 +00:00

670 lines
27 KiB
C
Raw Blame History

/* packet-osi-options.c
* Routines for the decode of ISO/OSI option part
* Covers:
* ISO 8473 CLNP (ConnectionLess Mode Network Service Protocol)
* ISO 10589 ISIS (Intradomain Routing Information Exchange Protocol)
* ISO 9542 ESIS (End System To Intermediate System Routing Exchange Protocol)
*
* Ralf Schneider <Ralf.Schneider@t-online.de>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/expert.h>
#include "packet-osi.h"
#include "packet-osi-options.h"
/* ATN traffic types (ICAO doc 9705 Edition3 SV5 5.6.2.2.6.7.3) */
#define ATN_TT_ATSC_NO_PREFERENCE 0x01
#define ATN_TT_ATSC_CLASS_A 0x10
#define ATN_TT_ATSC_CLASS_B 0x11
#define ATN_TT_ATSC_CLASS_C 0x12
#define ATN_TT_ATSC_CLASS_D 0x13
#define ATN_TT_ATSC_CLASS_E 0x14
#define ATN_TT_ATSC_CLASS_F 0x15
#define ATN_TT_ATSC_CLASS_G 0x16
#define ATN_TT_ATSC_CLASS_H 0x17
#define ATN_TT_AOC_NO_PREFERENCE 0x21
#define ATN_TT_AOC_G 0x22
#define ATN_TT_AOC_V 0x23
#define ATN_TT_AOC_S 0x24
#define ATN_TT_AOC_H 0x25
#define ATN_TT_AOC_M 0x26
#define ATN_TT_AOC_G_V 0x27
#define ATN_TT_AOC_G_V_S 0x28
#define ATN_TT_AOC_G_V_H_S 0x29
#define ATN_TT_ADM_NO_PREFERENCE 0x30
#define ATN_TT_SYS_MGMT_NO_PREFERENCE 0x60
/* ATN security classification (ICAO doc 9705 Edition3 SV5 5.6.2.2.6.8.3) */
#define ATN_SC_UNCLASSIFIED 0x01
#define ATN_SC_RESTRICTED 0x02
#define ATN_SC_CONFIDENTIAL 0x03
#define ATN_SC_SECRET 0x04
#define ATN_SC_TOP_SECRET 0x05
/* ATN security label records */
#define OSI_OPT_SECURITY_ATN_SR 0xc0
#define OSI_OPT_SECURITY_ATN_TT 0x0f
#define OSI_OPT_SECURITY_ATN_SC 0x03
#define OSI_OPT_SECURITY_ATN_SR_LEN 6
#define OSI_OPT_SECURITY_ATN_TT_LEN 1
#define OSI_OPT_SECURITY_ATN_SC_LEN 1
#define OSI_OPT_SECURITY_ATN_SI_MAX_LEN 8
#define OSI_OPT_SECURITY 0xc5
#define OSI_OPT_QOS_MAINTANANCE 0xc3
#define OSI_OPT_PRIORITY 0xcd
#define OSI_OPT_ADDRESS_MASK 0xe1
#define OSI_OPT_SNPA_MASK 0xe2
#define OSI_OPT_ES_CONFIG_TIMER 0xc6
#define OSI_OPT_MAX_PRIORITY 0x0e
#define OSI_OPT_PADDING 0xcc
#define OSI_OPT_SOURCE_ROUTING 0xc8
#define OSI_OPT_RECORD_OF_ROUTE 0xcb
#define OSI_OPT_REASON_OF_DISCARD 0xc1
#define OSI_OPT_SEC_MASK 0xc0
#define OSI_OPT_SEC_RESERVED 0x00
#define OSI_OPT_SEC_SRC_ADR_SPEC 0x01
#define OSI_OPT_SEC_DST_ADR_SPEC 0x02
#define OSI_OPT_SEC_GLOBAL_UNIQUE 0x03
#define OSI_OPT_QOS_MASK 0xc0
#define OSI_OPT_QOS_RESERVED 0x00
#define OSI_OPT_QOS_SRC_ADR_SPEC 0x01
#define OSI_OPT_QOS_DST_ADR_SPEC 0x02
#define OSI_OPT_QOS_GLOBAL_UNIQUE 0x03
#define OSI_OPT_QOS_SUB_MASK 0x3f
#define OSI_OPT_QOS_SUB_RSVD 0x20
#define OSI_OPT_QOS_SUB_SEQ_VS_TRS 0x10
#define OSI_OPT_QOS_SUB_CONG_EXPED 0x08
#define OSI_OPT_QOS_SUB_TSD_VS_COST 0x04
#define OSI_OPT_QOS_SUB_RESERR_TRS 0x02
#define OSI_OPT_QOS_SUB_RESERR_COST 0x01
#define OSI_OPT_RFD_GENERAL 0x00
#define OSI_OPT_RFD_ADDRESS 0x08
#define OSI_OPT_RFD_SOURCE_ROUTING 0x09
#define OSI_OPT_RFD_LIFETIME 0x0a
#define OSI_OPT_RFD_PDU_DISCARDED 0x0b
#define OSI_OPT_RFD_REASSEMBLY 0x0c
#define OSI_OPT_RFD_MASK 0xf0
#define OSI_OPT_RFD_SUB_MASK 0x0f
extern gboolean clnp_decode_atn_options; /* as defined in packet-clnp.c */
extern int hf_clnp_atntt; /* as defined in packet-clnp.c */
extern int hf_clnp_atnsc; /* as defined in packet-clnp.c */
/* Generated from convert_proto_tree_add_text.pl */
static int hf_osi_options_address_mask = -1;
static int hf_osi_options_transit_delay_vs_cost = -1;
static int hf_osi_options_rtd_general = -1;
static int hf_osi_options_residual_error_prob_vs_transit_delay = -1;
static int hf_osi_options_qos_sequencing_vs_transit_delay = -1;
static int hf_osi_options_rtd_address = -1;
static int hf_osi_options_congestion_experienced = -1;
static int hf_osi_options_esct = -1;
static int hf_osi_options_rtd_reassembly = -1;
static int hf_osi_options_qos_maintenance = -1;
static int hf_osi_options_security_type = -1;
static int hf_osi_options_route_recording = -1;
static int hf_osi_options_last_hop = -1;
static int hf_osi_options_route = -1;
static int hf_osi_options_rtd_lifetime = -1;
static int hf_osi_options_rtd_source_routing = -1;
static int hf_osi_options_padding = -1;
static int hf_osi_options_rfd_error_class = -1;
static int hf_osi_options_snpa_mask = -1;
static int hf_osi_options_source_routing = -1;
static int hf_osi_options_priority = -1;
static int hf_osi_options_qos_reserved = -1;
static int hf_osi_options_residual_error_prob_vs_cost = -1;
static int hf_osi_options_rtd_pdu_discarded = -1;
static int hf_osi_options_rfd_field = -1;
static gint ott_osi_options = -1;
static gint ott_osi_qos = -1;
static gint ott_osi_route = -1;
static gint ott_osi_redirect = -1;
static expert_field ei_osi_options_none = EI_INIT;
static expert_field ei_osi_options_rfd_error_class = EI_INIT;
static const guchar atn_security_registration_val[] = {
0x06, 0x04, 0x2b, 0x1b, 0x00, 0x00
}; /* =iso(1).org(3).ICAO(27).ATN(0).TrafficType(0)*/
static const value_string osi_opt_sec_atn_sr_vals[] = {
{OSI_OPT_SECURITY_ATN_SR, "ATN Security Label"},
{0, NULL}
};
static const value_string osi_opt_sec_atn_si_vals[] = {
{OSI_OPT_SECURITY_ATN_TT, "Traffic Type and Routing"},
{OSI_OPT_SECURITY_ATN_SC, "Security classification"},
{0, NULL}
};
static const value_string osi_opt_sec_atn_tt_vals[] = {
{ATN_TT_ATSC_NO_PREFERENCE, "ATSC No preference"},
{ATN_TT_ATSC_CLASS_A, "ATSC Class A"},
{ATN_TT_ATSC_CLASS_B, "ATSC Class B"},
{ATN_TT_ATSC_CLASS_C, "ATSC Class C"},
{ATN_TT_ATSC_CLASS_D, "ATSC Class D"},
{ATN_TT_ATSC_CLASS_E, "ATSC Class E"},
{ATN_TT_ATSC_CLASS_F, "ATSC Class F"},
{ATN_TT_ATSC_CLASS_G, "ATSC Class G"},
{ATN_TT_ATSC_CLASS_H, "ATSC Class H"},
{ATN_TT_AOC_NO_PREFERENCE, "AOC No preference"},
{ATN_TT_AOC_G, "AOC Gatelink only"},
{ATN_TT_AOC_V, "AOC VHF only"},
{ATN_TT_AOC_S, "AOC Satellite only"},
{ATN_TT_AOC_H, "AOC HF only"},
{ATN_TT_AOC_M, "AOC Mode S only"},
{ATN_TT_AOC_G_V, "AOC Gatelink first, then VHF"},
{ATN_TT_AOC_G_V_S, "AOC Gatelink first, then VHF, then Satellite"},
{ATN_TT_AOC_G_V_H_S, "AOC Gatelink first, then VHF, then HF, then Satellite"},
{ATN_TT_ADM_NO_PREFERENCE, "ATN Administrative No preference"},
{ATN_TT_SYS_MGMT_NO_PREFERENCE, "ATN Systems Management No preference"},
{0, NULL}
};
static const value_string osi_opt_sec_atn_sc_vals[] = {
{ATN_SC_UNCLASSIFIED, "unclassified"},
{ATN_SC_RESTRICTED, "restricted"},
{ATN_SC_CONFIDENTIAL, "confidential"},
{ATN_SC_SECRET, "secret"},
{ATN_SC_TOP_SECRET, "top secret"},
{0, NULL}
};
static const value_string osi_opt_sec_vals[] = {
{OSI_OPT_SEC_RESERVED, "Reserved"},
{OSI_OPT_SEC_SRC_ADR_SPEC, "Source Address Specific"},
{OSI_OPT_SEC_DST_ADR_SPEC, "Destination Address Specific"},
{OSI_OPT_SEC_GLOBAL_UNIQUE, "Globally Unique"},
{0, NULL}
};
static const value_string osi_opt_qos_vals[] = {
{OSI_OPT_QOS_RESERVED, "Reserved"},
{OSI_OPT_QOS_SRC_ADR_SPEC, "Source Address Specific"},
{OSI_OPT_QOS_DST_ADR_SPEC, "Destination Address Specific"},
{OSI_OPT_QOS_GLOBAL_UNIQUE, "Globally Unique"},
{0, NULL}
};
static const value_string osi_opt_rfd_error_class[] = {
{OSI_OPT_RFD_GENERAL, "General"},
{OSI_OPT_RFD_ADDRESS, "Address"},
{OSI_OPT_RFD_SOURCE_ROUTING, "Source Routing"},
{OSI_OPT_RFD_LIFETIME, "Lifetime"},
{OSI_OPT_RFD_PDU_DISCARDED, "PDU discarded"},
{OSI_OPT_RFD_REASSEMBLY, "Reassembly"},
{0, NULL}
};
static const value_string osi_opt_rfd_general[] = {
{0x00, "Reason not specified"},
{0x01, "Protocol procedure error"},
{0x02, "Incorrect checksum"},
{0x03, "PDU discarded due to congestion"},
{0x04, "Header syntax error ( cannot be parsed )"},
{0x05, "Segmentation needed but not permitted"},
{0x06, "Incomplete PDU received"},
{0x07, "Duplicate option"},
{0, NULL}
};
static const value_string osi_opt_rfd_address[] = {
{0x00, "Destination Address unreachable"},
{0x01, "Destination Address unknown"},
{0, NULL}
};
static const value_string osi_opt_rfd_src_route[] = {
{0x00, "Unspecified source routing error"},
{0x01, "Syntax error in source routing field"},
{0x02, "Unknown address in source routing field"},
{0x03, "Path not acceptable"},
{0, NULL}
};
static const value_string osi_opt_rfd_lifetime[] = {
{0x00, "Lifetime expired while data unit in transit"},
{0x01, "Lifetime expired during reassembly"},
{0, NULL}
};
static const value_string osi_opt_rfd_discarded[] = {
{0x00, "Unsupported option not specified"},
{0x01, "Unsupported protocol version"},
{0x02, "Unsupported security option"},
{0x03, "Unsupported source routing option"},
{0x04, "Unsupported recording of route option"},
{0, NULL}
};
static const value_string osi_opt_rfd_reassembly[] = {
{0x00, "Reassembly interference"},
{0, NULL} };
static void
dissect_option_qos(const guint8 qos, proto_tree *tree, tvbuff_t *tvb, int offset)
{
proto_item *ti;
proto_tree *osi_qos_tree;
ti = proto_tree_add_item(tree, hf_osi_options_qos_maintenance, tvb, offset, 1, ENC_BIG_ENDIAN);
osi_qos_tree = proto_item_add_subtree(ti, ott_osi_qos);
if ( ((qos & OSI_OPT_QOS_MASK) >> 6) == OSI_OPT_QOS_GLOBAL_UNIQUE) { /* Analye BIT field to get all Values */
proto_tree_add_item(osi_qos_tree, hf_osi_options_qos_reserved, tvb, offset, 1, ENC_NA);
proto_tree_add_item(osi_qos_tree, hf_osi_options_qos_sequencing_vs_transit_delay, tvb, offset, 1, ENC_NA);
proto_tree_add_item(osi_qos_tree, hf_osi_options_congestion_experienced, tvb, offset, 1, ENC_NA);
proto_tree_add_item(osi_qos_tree, hf_osi_options_transit_delay_vs_cost, tvb, offset, 1, ENC_NA);
proto_tree_add_item(osi_qos_tree, hf_osi_options_residual_error_prob_vs_transit_delay, tvb, offset, 1, ENC_NA);
proto_tree_add_item(osi_qos_tree, hf_osi_options_residual_error_prob_vs_cost, tvb, offset, 1, ENC_NA);
}
}
static void
dissect_option_route(guchar parm_type, int offset, guchar parm_len,
tvbuff_t *tvb, proto_tree *tree )
{
guchar next_hop = 0;
guint16 this_hop = 0;
guchar netl = 0;
guchar last_hop = 0;
guchar cnt_hops = 0;
guchar crr = 0;
gchar* str;
proto_tree *osi_route_tree = NULL;
if ( parm_type == OSI_OPT_SOURCE_ROUTING ) {
next_hop = tvb_get_guint8(tvb, offset + 1);
netl = tvb_get_guint8(tvb, next_hop + 2);
this_hop = offset + 2; /* points to first netl */
proto_tree_add_uint_format_value(tree, hf_osi_options_source_routing, tvb, offset + next_hop, netl,
tvb_get_guint8(tvb, offset), "%s ( Next Hop Highlighted In Data Buffer )",
(tvb_get_guint8(tvb, offset) == 0) ? "Partial Source Routing" :
"Complete Source Routing");
}
else if ( parm_type == OSI_OPT_RECORD_OF_ROUTE ) {
crr = tvb_get_guint8(tvb, offset);
last_hop = tvb_get_guint8(tvb, offset + 1);
osi_route_tree = proto_tree_add_subtree(tree, tvb, offset, parm_len, ott_osi_route, NULL,
(crr == 0) ? "Partial Route Recording" : "Complete Route Recording");
/* Complete Route Recording or Partial Route Recording */
proto_tree_add_uint_format_value(tree, hf_osi_options_route_recording, tvb, offset, 1, crr, "%s ",
(crr == 0) ? "Partial Route Recording" :
"Complete Route Recording");
/* "last_hop" is either :
* 0x03 : special value for no NET recorded yet.
* 0xFF : special value telling there is no more place
in the Route Recording Allocated Length and
therefore next NETs won't be recorded.
* Other value : Total length of recorded NETs so far.
*/
if ( last_hop == 0x03 )
proto_tree_add_uint_format(osi_route_tree, hf_osi_options_last_hop, tvb, offset + 1, 1, last_hop,
"No Network Entity Titles Recorded Yet");
if ( last_hop == 0xFF )
proto_tree_add_uint_format(osi_route_tree, hf_osi_options_last_hop, tvb, offset + 1, 1, last_hop,
"Recording Terminated : No more space !");
if ( last_hop == 255 || last_hop == 0x03 )
this_hop = parm_len + 1; /* recording terminated,
* or not begun, nothing to show */
else
this_hop = offset + 2; /* points to first netl */
}
while ( this_hop < offset + last_hop -2 ) { /* -2 for crr and last_hop */
netl = tvb_get_guint8(tvb, this_hop);
str = print_nsap_net(tvb, this_hop + 1, netl);
proto_tree_add_string_format(osi_route_tree, hf_osi_options_route, tvb, this_hop, netl + 1, str,
"Hop #%3u NETL: %2u, NET: %s", cnt_hops++, netl, str);
this_hop += 1 + netl;
}
}
static void
dissect_option_rfd(const guchar error, const guchar field, int offset,
guchar len _U_, tvbuff_t *tvb, proto_tree *tree, packet_info *pinfo )
{
proto_item *ti;
ti = proto_tree_add_item(tree, hf_osi_options_rfd_error_class, tvb, offset, 1, ENC_BIG_ENDIAN);
switch ((error & OSI_OPT_RFD_MASK) >> 4)
{
case OSI_OPT_RFD_GENERAL:
proto_tree_add_item(tree, hf_osi_options_rtd_general, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case OSI_OPT_RFD_ADDRESS:
proto_tree_add_item(tree, hf_osi_options_rtd_address, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case OSI_OPT_RFD_SOURCE_ROUTING:
proto_tree_add_item(tree, hf_osi_options_rtd_source_routing, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case OSI_OPT_RFD_LIFETIME:
proto_tree_add_item(tree, hf_osi_options_rtd_lifetime, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case OSI_OPT_RFD_PDU_DISCARDED:
proto_tree_add_item(tree, hf_osi_options_rtd_pdu_discarded, tvb, offset, 1, ENC_BIG_ENDIAN);
break;
case OSI_OPT_RFD_REASSEMBLY:
proto_tree_add_item(tree, hf_osi_options_rtd_reassembly, tvb, offset, 1, ENC_BIG_ENDIAN);
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, ott_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,
ott_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 *ott[] = {
&ott_osi_options,
&ott_osi_qos,
&ott_osi_route,
&ott_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(ott, array_length(ott));
expert_osi_options = expert_register_protocol(proto_osi);
expert_register_field_array(expert_osi_options, ei, array_length(ei));
}
/*
* Editor modelines - http://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:
*/
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