freebsd-dev/contrib/tcpdump/print-isoclns.c

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/*
* Copyright (c) 1992, 1993, 1994, 1995, 1996
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Original code by Matt Thomas, Digital Equipment Corporation
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*
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* Extensively modified by Hannes Gredler (hannes@juniper.net) for more
* complete IS-IS & CLNP support.
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*
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* $FreeBSD$
*/
#ifndef lint
static const char rcsid[] _U_ =
Update tcpdump to 4.1.1. Changes: Thu. April 1, 2010. guy@alum.mit.edu. Summary for 4.1.1 tcpdump release Fix build on systems with PF, such as FreeBSD and OpenBSD. Don't blow up if a zero-length link-layer address is passed to linkaddr_string(). Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. Summary for 4.1.0 tcpdump release Fix printing of MAC addresses for VLAN frames with a length field Add some additional bounds checks and use the EXTRACT_ macros more Add a -b flag to print the AS number in BGP packets in ASDOT notation rather than ASPLAIN notation Add ICMPv6 RFC 5006 support Decode the access flags in NFS access requests Handle the new DLT_ for memory-mapped USB captures on Linux Make the default snapshot (-s) the maximum Print name of device (when -L is used) Support for OpenSolaris (and SXCE build 125 and later) Print new TCP flags Add support for RPL DIO Add support for TCP User Timeout (UTO) Add support for non-standard Ethertypes used by 3com PPPoE gear Add support for 802.11n and 802.11s Add support for Transparent Ethernet Bridge ethertype in GRE Add 4 byte AS support for BGP printer Add support for the MDT SAFI 66 BG printer Add basic IPv6 support to print-olsr Add USB printer Add printer for ForCES Handle frames with an FCS Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames Fix TCP sequence number printing Report 802.2 packets as 802.2 instead of 802.3 Don't include -L/usr/lib in LDFLAGS On x86_64 Linux, look in lib64 directory too Lots of code clean ups Autoconf clean ups Update testcases to make output changes Fix compiling with/out smi (--with{,out}-smi) Fix compiling without IPv6 support (--disable-ipv6)
2010-10-28 16:23:25 +00:00
"@(#) $Header: /tcpdump/master/tcpdump/print-isoclns.c,v 1.165 2008-08-16 13:38:15 hannes Exp $ (LBL)";
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#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include <stdio.h>
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#include <string.h>
#include "interface.h"
#include "addrtoname.h"
#include "ethertype.h"
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#include "ether.h"
#include "nlpid.h"
#include "extract.h"
#include "gmpls.h"
#include "oui.h"
Update tcpdump to 4.1.1. Changes: Thu. April 1, 2010. guy@alum.mit.edu. Summary for 4.1.1 tcpdump release Fix build on systems with PF, such as FreeBSD and OpenBSD. Don't blow up if a zero-length link-layer address is passed to linkaddr_string(). Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. Summary for 4.1.0 tcpdump release Fix printing of MAC addresses for VLAN frames with a length field Add some additional bounds checks and use the EXTRACT_ macros more Add a -b flag to print the AS number in BGP packets in ASDOT notation rather than ASPLAIN notation Add ICMPv6 RFC 5006 support Decode the access flags in NFS access requests Handle the new DLT_ for memory-mapped USB captures on Linux Make the default snapshot (-s) the maximum Print name of device (when -L is used) Support for OpenSolaris (and SXCE build 125 and later) Print new TCP flags Add support for RPL DIO Add support for TCP User Timeout (UTO) Add support for non-standard Ethertypes used by 3com PPPoE gear Add support for 802.11n and 802.11s Add support for Transparent Ethernet Bridge ethertype in GRE Add 4 byte AS support for BGP printer Add support for the MDT SAFI 66 BG printer Add basic IPv6 support to print-olsr Add USB printer Add printer for ForCES Handle frames with an FCS Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames Fix TCP sequence number printing Report 802.2 packets as 802.2 instead of 802.3 Don't include -L/usr/lib in LDFLAGS On x86_64 Linux, look in lib64 directory too Lots of code clean ups Autoconf clean ups Update testcases to make output changes Fix compiling with/out smi (--with{,out}-smi) Fix compiling without IPv6 support (--disable-ipv6)
2010-10-28 16:23:25 +00:00
#include "signature.h"
/*
* IS-IS is defined in ISO 10589. Look there for protocol definitions.
*/
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#define SYSTEM_ID_LEN ETHER_ADDR_LEN
#define NODE_ID_LEN SYSTEM_ID_LEN+1
#define LSP_ID_LEN SYSTEM_ID_LEN+2
#define ISIS_VERSION 1
#define ESIS_VERSION 1
#define CLNP_VERSION 1
#define ISIS_PDU_TYPE_MASK 0x1F
#define ESIS_PDU_TYPE_MASK 0x1F
#define CLNP_PDU_TYPE_MASK 0x1F
#define CLNP_FLAG_MASK 0xE0
#define ISIS_LAN_PRIORITY_MASK 0x7F
#define ISIS_PDU_L1_LAN_IIH 15
#define ISIS_PDU_L2_LAN_IIH 16
#define ISIS_PDU_PTP_IIH 17
#define ISIS_PDU_L1_LSP 18
#define ISIS_PDU_L2_LSP 20
#define ISIS_PDU_L1_CSNP 24
#define ISIS_PDU_L2_CSNP 25
#define ISIS_PDU_L1_PSNP 26
#define ISIS_PDU_L2_PSNP 27
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static struct tok isis_pdu_values[] = {
{ ISIS_PDU_L1_LAN_IIH, "L1 Lan IIH"},
{ ISIS_PDU_L2_LAN_IIH, "L2 Lan IIH"},
{ ISIS_PDU_PTP_IIH, "p2p IIH"},
{ ISIS_PDU_L1_LSP, "L1 LSP"},
{ ISIS_PDU_L2_LSP, "L2 LSP"},
{ ISIS_PDU_L1_CSNP, "L1 CSNP"},
{ ISIS_PDU_L2_CSNP, "L2 CSNP"},
{ ISIS_PDU_L1_PSNP, "L1 PSNP"},
{ ISIS_PDU_L2_PSNP, "L2 PSNP"},
{ 0, NULL}
};
/*
* A TLV is a tuple of a type, length and a value and is normally used for
* encoding information in all sorts of places. This is an enumeration of
* the well known types.
*
* list taken from rfc3359 plus some memory from veterans ;-)
*/
#define ISIS_TLV_AREA_ADDR 1 /* iso10589 */
#define ISIS_TLV_IS_REACH 2 /* iso10589 */
#define ISIS_TLV_ESNEIGH 3 /* iso10589 */
#define ISIS_TLV_PART_DIS 4 /* iso10589 */
#define ISIS_TLV_PREFIX_NEIGH 5 /* iso10589 */
#define ISIS_TLV_ISNEIGH 6 /* iso10589 */
#define ISIS_TLV_ISNEIGH_VARLEN 7 /* iso10589 */
#define ISIS_TLV_PADDING 8 /* iso10589 */
#define ISIS_TLV_LSP 9 /* iso10589 */
#define ISIS_TLV_AUTH 10 /* iso10589, rfc3567 */
#define ISIS_TLV_CHECKSUM 12 /* rfc3358 */
#define ISIS_TLV_CHECKSUM_MINLEN 2
#define ISIS_TLV_LSP_BUFFERSIZE 14 /* iso10589 rev2 */
#define ISIS_TLV_LSP_BUFFERSIZE_MINLEN 2
#define ISIS_TLV_EXT_IS_REACH 22 /* draft-ietf-isis-traffic-05 */
#define ISIS_TLV_IS_ALIAS_ID 24 /* draft-ietf-isis-ext-lsp-frags-02 */
#define ISIS_TLV_DECNET_PHASE4 42
#define ISIS_TLV_LUCENT_PRIVATE 66
#define ISIS_TLV_INT_IP_REACH 128 /* rfc1195, rfc2966 */
#define ISIS_TLV_PROTOCOLS 129 /* rfc1195 */
#define ISIS_TLV_EXT_IP_REACH 130 /* rfc1195, rfc2966 */
#define ISIS_TLV_IDRP_INFO 131 /* rfc1195 */
#define ISIS_TLV_IDRP_INFO_MINLEN 1
#define ISIS_TLV_IPADDR 132 /* rfc1195 */
#define ISIS_TLV_IPAUTH 133 /* rfc1195 */
#define ISIS_TLV_TE_ROUTER_ID 134 /* draft-ietf-isis-traffic-05 */
#define ISIS_TLV_EXTD_IP_REACH 135 /* draft-ietf-isis-traffic-05 */
#define ISIS_TLV_HOSTNAME 137 /* rfc2763 */
#define ISIS_TLV_SHARED_RISK_GROUP 138 /* draft-ietf-isis-gmpls-extensions */
#define ISIS_TLV_NORTEL_PRIVATE1 176
#define ISIS_TLV_NORTEL_PRIVATE2 177
#define ISIS_TLV_RESTART_SIGNALING 211 /* rfc3847 */
#define ISIS_TLV_RESTART_SIGNALING_FLAGLEN 1
#define ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN 2
#define ISIS_TLV_MT_IS_REACH 222 /* draft-ietf-isis-wg-multi-topology-05 */
#define ISIS_TLV_MT_SUPPORTED 229 /* draft-ietf-isis-wg-multi-topology-05 */
#define ISIS_TLV_MT_SUPPORTED_MINLEN 2
#define ISIS_TLV_IP6ADDR 232 /* draft-ietf-isis-ipv6-02 */
#define ISIS_TLV_MT_IP_REACH 235 /* draft-ietf-isis-wg-multi-topology-05 */
#define ISIS_TLV_IP6_REACH 236 /* draft-ietf-isis-ipv6-02 */
#define ISIS_TLV_MT_IP6_REACH 237 /* draft-ietf-isis-wg-multi-topology-05 */
#define ISIS_TLV_PTP_ADJ 240 /* rfc3373 */
#define ISIS_TLV_IIH_SEQNR 241 /* draft-shen-isis-iih-sequence-00 */
#define ISIS_TLV_IIH_SEQNR_MINLEN 4
#define ISIS_TLV_VENDOR_PRIVATE 250 /* draft-ietf-isis-experimental-tlv-01 */
#define ISIS_TLV_VENDOR_PRIVATE_MINLEN 3
static struct tok isis_tlv_values[] = {
{ ISIS_TLV_AREA_ADDR, "Area address(es)"},
{ ISIS_TLV_IS_REACH, "IS Reachability"},
{ ISIS_TLV_ESNEIGH, "ES Neighbor(s)"},
{ ISIS_TLV_PART_DIS, "Partition DIS"},
{ ISIS_TLV_PREFIX_NEIGH, "Prefix Neighbors"},
{ ISIS_TLV_ISNEIGH, "IS Neighbor(s)"},
{ ISIS_TLV_ISNEIGH_VARLEN, "IS Neighbor(s) (variable length)"},
{ ISIS_TLV_PADDING, "Padding"},
{ ISIS_TLV_LSP, "LSP entries"},
{ ISIS_TLV_AUTH, "Authentication"},
{ ISIS_TLV_CHECKSUM, "Checksum"},
{ ISIS_TLV_LSP_BUFFERSIZE, "LSP Buffersize"},
{ ISIS_TLV_EXT_IS_REACH, "Extended IS Reachability"},
{ ISIS_TLV_IS_ALIAS_ID, "IS Alias ID"},
{ ISIS_TLV_DECNET_PHASE4, "DECnet Phase IV"},
{ ISIS_TLV_LUCENT_PRIVATE, "Lucent Proprietary"},
{ ISIS_TLV_INT_IP_REACH, "IPv4 Internal Reachability"},
{ ISIS_TLV_PROTOCOLS, "Protocols supported"},
{ ISIS_TLV_EXT_IP_REACH, "IPv4 External Reachability"},
{ ISIS_TLV_IDRP_INFO, "Inter-Domain Information Type"},
{ ISIS_TLV_IPADDR, "IPv4 Interface address(es)"},
{ ISIS_TLV_IPAUTH, "IPv4 authentication (deprecated)"},
{ ISIS_TLV_TE_ROUTER_ID, "Traffic Engineering Router ID"},
{ ISIS_TLV_EXTD_IP_REACH, "Extended IPv4 Reachability"},
{ ISIS_TLV_SHARED_RISK_GROUP, "Shared Risk Link Group"},
{ ISIS_TLV_NORTEL_PRIVATE1, "Nortel Proprietary"},
{ ISIS_TLV_NORTEL_PRIVATE2, "Nortel Proprietary"},
{ ISIS_TLV_HOSTNAME, "Hostname"},
{ ISIS_TLV_RESTART_SIGNALING, "Restart Signaling"},
{ ISIS_TLV_MT_IS_REACH, "Multi Topology IS Reachability"},
{ ISIS_TLV_MT_SUPPORTED, "Multi Topology"},
{ ISIS_TLV_IP6ADDR, "IPv6 Interface address(es)"},
{ ISIS_TLV_MT_IP_REACH, "Multi-Topology IPv4 Reachability"},
{ ISIS_TLV_IP6_REACH, "IPv6 reachability"},
{ ISIS_TLV_MT_IP6_REACH, "Multi-Topology IP6 Reachability"},
{ ISIS_TLV_PTP_ADJ, "Point-to-point Adjacency State"},
{ ISIS_TLV_IIH_SEQNR, "Hello PDU Sequence Number"},
{ ISIS_TLV_VENDOR_PRIVATE, "Vendor Private"},
{ 0, NULL }
};
#define ESIS_OPTION_PROTOCOLS 129
#define ESIS_OPTION_QOS_MAINTENANCE 195 /* iso9542 */
#define ESIS_OPTION_SECURITY 197 /* iso9542 */
#define ESIS_OPTION_ES_CONF_TIME 198 /* iso9542 */
#define ESIS_OPTION_PRIORITY 205 /* iso9542 */
#define ESIS_OPTION_ADDRESS_MASK 225 /* iso9542 */
#define ESIS_OPTION_SNPA_MASK 226 /* iso9542 */
static struct tok esis_option_values[] = {
{ ESIS_OPTION_PROTOCOLS, "Protocols supported"},
{ ESIS_OPTION_QOS_MAINTENANCE, "QoS Maintenance" },
{ ESIS_OPTION_SECURITY, "Security" },
{ ESIS_OPTION_ES_CONF_TIME, "ES Configuration Time" },
{ ESIS_OPTION_PRIORITY, "Priority" },
{ ESIS_OPTION_ADDRESS_MASK, "Addressk Mask" },
{ ESIS_OPTION_SNPA_MASK, "SNPA Mask" },
{ 0, NULL }
};
#define CLNP_OPTION_DISCARD_REASON 193
#define CLNP_OPTION_QOS_MAINTENANCE 195 /* iso8473 */
#define CLNP_OPTION_SECURITY 197 /* iso8473 */
#define CLNP_OPTION_SOURCE_ROUTING 200 /* iso8473 */
#define CLNP_OPTION_ROUTE_RECORDING 203 /* iso8473 */
#define CLNP_OPTION_PADDING 204 /* iso8473 */
#define CLNP_OPTION_PRIORITY 205 /* iso8473 */
static struct tok clnp_option_values[] = {
{ CLNP_OPTION_DISCARD_REASON, "Discard Reason"},
{ CLNP_OPTION_PRIORITY, "Priority"},
{ CLNP_OPTION_QOS_MAINTENANCE, "QoS Maintenance"},
{ CLNP_OPTION_SECURITY, "Security"},
{ CLNP_OPTION_SOURCE_ROUTING, "Source Routing"},
{ CLNP_OPTION_ROUTE_RECORDING, "Route Recording"},
{ CLNP_OPTION_PADDING, "Padding"},
{ 0, NULL }
};
static struct tok clnp_option_rfd_class_values[] = {
{ 0x0, "General"},
{ 0x8, "Address"},
{ 0x9, "Source Routeing"},
{ 0xa, "Lifetime"},
{ 0xb, "PDU Discarded"},
{ 0xc, "Reassembly"},
{ 0, NULL }
};
static struct tok clnp_option_rfd_general_values[] = {
{ 0x0, "Reason not specified"},
{ 0x1, "Protocol procedure error"},
{ 0x2, "Incorrect checksum"},
{ 0x3, "PDU discarded due to congestion"},
{ 0x4, "Header syntax error (cannot be parsed)"},
{ 0x5, "Segmentation needed but not permitted"},
{ 0x6, "Incomplete PDU received"},
{ 0x7, "Duplicate option"},
{ 0, NULL }
};
static struct tok clnp_option_rfd_address_values[] = {
{ 0x0, "Destination address unreachable"},
{ 0x1, "Destination address unknown"},
{ 0, NULL }
};
static struct tok clnp_option_rfd_source_routeing_values[] = {
{ 0x0, "Unspecified source routeing error"},
{ 0x1, "Syntax error in source routeing field"},
{ 0x2, "Unknown address in source routeing field"},
{ 0x3, "Path not acceptable"},
{ 0, NULL }
};
static struct tok clnp_option_rfd_lifetime_values[] = {
{ 0x0, "Lifetime expired while data unit in transit"},
{ 0x1, "Lifetime expired during reassembly"},
{ 0, NULL }
};
static struct tok clnp_option_rfd_pdu_discard_values[] = {
{ 0x0, "Unsupported option not specified"},
{ 0x1, "Unsupported protocol version"},
{ 0x2, "Unsupported security option"},
{ 0x3, "Unsupported source routeing option"},
{ 0x4, "Unsupported recording of route option"},
{ 0, NULL }
};
static struct tok clnp_option_rfd_reassembly_values[] = {
{ 0x0, "Reassembly interference"},
{ 0, NULL }
};
/* array of 16 error-classes */
static struct tok *clnp_option_rfd_error_class[] = {
clnp_option_rfd_general_values,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
clnp_option_rfd_address_values,
clnp_option_rfd_source_routeing_values,
clnp_option_rfd_lifetime_values,
clnp_option_rfd_pdu_discard_values,
clnp_option_rfd_reassembly_values,
NULL,
NULL,
NULL
};
#define CLNP_OPTION_OPTION_QOS_MASK 0x3f
#define CLNP_OPTION_SCOPE_MASK 0xc0
#define CLNP_OPTION_SCOPE_SA_SPEC 0x40
#define CLNP_OPTION_SCOPE_DA_SPEC 0x80
#define CLNP_OPTION_SCOPE_GLOBAL 0xc0
static struct tok clnp_option_scope_values[] = {
{ CLNP_OPTION_SCOPE_SA_SPEC, "Source Address Specific"},
{ CLNP_OPTION_SCOPE_DA_SPEC, "Destination Address Specific"},
{ CLNP_OPTION_SCOPE_GLOBAL, "Globally unique"},
{ 0, NULL }
};
static struct tok clnp_option_sr_rr_values[] = {
{ 0x0, "partial"},
{ 0x1, "complete"},
{ 0, NULL }
};
static struct tok clnp_option_sr_rr_string_values[] = {
{ CLNP_OPTION_SOURCE_ROUTING, "source routing"},
{ CLNP_OPTION_ROUTE_RECORDING, "recording of route in progress"},
{ 0, NULL }
};
static struct tok clnp_option_qos_global_values[] = {
{ 0x20, "reserved"},
{ 0x10, "sequencing vs. delay"},
{ 0x08, "congested"},
{ 0x04, "delay vs. cost"},
{ 0x02, "error vs. delay"},
{ 0x01, "error vs. cost"},
{ 0, NULL }
};
#define ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP 3 /* draft-ietf-isis-traffic-05 */
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#define ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID 4 /* rfc4205 */
#define ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID 5 /* draft-ietf-isis-traffic-05 */
#define ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR 6 /* draft-ietf-isis-traffic-05 */
#define ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR 8 /* draft-ietf-isis-traffic-05 */
#define ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW 9 /* draft-ietf-isis-traffic-05 */
#define ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW 10 /* draft-ietf-isis-traffic-05 */
#define ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW 11 /* rfc4124 */
#define ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD 12 /* draft-ietf-tewg-diff-te-proto-06 */
#define ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC 18 /* draft-ietf-isis-traffic-05 */
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#define ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE 19 /* draft-ietf-isis-link-attr-01 */
#define ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE 20 /* rfc4205 */
#define ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR 21 /* rfc4205 */
#define ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS 22 /* rfc4124 */
static struct tok isis_ext_is_reach_subtlv_values[] = {
{ ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP, "Administrative groups" },
{ ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" },
{ ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID, "Link Remote Identifier" },
{ ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR, "IPv4 interface address" },
{ ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR, "IPv4 neighbor address" },
{ ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW, "Maximum link bandwidth" },
{ ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW, "Reservable link bandwidth" },
{ ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW, "Unreserved bandwidth" },
{ ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC, "Traffic Engineering Metric" },
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{ ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE, "Link Attribute" },
{ ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE, "Link Protection Type" },
{ ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR, "Interface Switching Capability" },
{ ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD, "Bandwidth Constraints (old)" },
{ ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS, "Bandwidth Constraints" },
{ 250, "Reserved for cisco specific extensions" },
{ 251, "Reserved for cisco specific extensions" },
{ 252, "Reserved for cisco specific extensions" },
{ 253, "Reserved for cisco specific extensions" },
{ 254, "Reserved for cisco specific extensions" },
{ 255, "Reserved for future expansion" },
{ 0, NULL }
};
#define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32 1 /* draft-ietf-isis-admin-tags-01 */
#define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64 2 /* draft-ietf-isis-admin-tags-01 */
#define ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR 117 /* draft-ietf-isis-wg-multi-topology-05 */
static struct tok isis_ext_ip_reach_subtlv_values[] = {
{ ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32, "32-Bit Administrative tag" },
{ ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64, "64-Bit Administrative tag" },
{ ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR, "Management Prefix Color" },
{ 0, NULL }
};
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static struct tok isis_subtlv_link_attribute_values[] = {
{ 0x01, "Local Protection Available" },
{ 0x02, "Link excluded from local protection path" },
{ 0x04, "Local maintenance required"},
{ 0, NULL }
};
#define ISIS_SUBTLV_AUTH_SIMPLE 1
#define ISIS_SUBTLV_AUTH_MD5 54
#define ISIS_SUBTLV_AUTH_MD5_LEN 16
#define ISIS_SUBTLV_AUTH_PRIVATE 255
static struct tok isis_subtlv_auth_values[] = {
{ ISIS_SUBTLV_AUTH_SIMPLE, "simple text password"},
{ ISIS_SUBTLV_AUTH_MD5, "HMAC-MD5 password"},
{ ISIS_SUBTLV_AUTH_PRIVATE, "Routing Domain private password"},
{ 0, NULL }
};
#define ISIS_SUBTLV_IDRP_RES 0
#define ISIS_SUBTLV_IDRP_LOCAL 1
#define ISIS_SUBTLV_IDRP_ASN 2
static struct tok isis_subtlv_idrp_values[] = {
{ ISIS_SUBTLV_IDRP_RES, "Reserved"},
{ ISIS_SUBTLV_IDRP_LOCAL, "Routing-Domain Specific"},
{ ISIS_SUBTLV_IDRP_ASN, "AS Number Tag"},
{ 0, NULL}
};
#define CLNP_SEGMENT_PART 0x80
#define CLNP_MORE_SEGMENTS 0x40
#define CLNP_REQUEST_ER 0x20
static struct tok clnp_flag_values[] = {
{ CLNP_SEGMENT_PART, "Segmentation permitted"},
{ CLNP_MORE_SEGMENTS, "more Segments"},
{ CLNP_REQUEST_ER, "request Error Report"},
{ 0, NULL}
};
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#define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4)
#define ISIS_MASK_LSP_ISTYPE_BITS(x) ((x)&0x3)
#define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80)
#define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78)
#define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40)
#define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20)
#define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10)
#define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8)
#define ISIS_MASK_MTID(x) ((x)&0x0fff)
#define ISIS_MASK_MTFLAGS(x) ((x)&0xf000)
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static struct tok isis_mt_flag_values[] = {
{ 0x4000, "sub-TLVs present"},
{ 0x8000, "ATT bit set"},
{ 0, NULL}
};
#define ISIS_MASK_TLV_EXTD_IP_UPDOWN(x) ((x)&0x80)
#define ISIS_MASK_TLV_EXTD_IP_SUBTLV(x) ((x)&0x40)
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#define ISIS_MASK_TLV_EXTD_IP6_IE(x) ((x)&0x40)
#define ISIS_MASK_TLV_EXTD_IP6_SUBTLV(x) ((x)&0x20)
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#define ISIS_LSP_TLV_METRIC_SUPPORTED(x) ((x)&0x80)
#define ISIS_LSP_TLV_METRIC_IE(x) ((x)&0x40)
#define ISIS_LSP_TLV_METRIC_UPDOWN(x) ((x)&0x80)
#define ISIS_LSP_TLV_METRIC_VALUE(x) ((x)&0x3f)
#define ISIS_MASK_TLV_SHARED_RISK_GROUP(x) ((x)&0x1)
static struct tok isis_mt_values[] = {
{ 0, "IPv4 unicast"},
{ 1, "In-Band Management"},
{ 2, "IPv6 unicast"},
{ 3, "Multicast"},
{ 4095, "Development, Experimental or Proprietary"},
{ 0, NULL }
};
static struct tok isis_iih_circuit_type_values[] = {
{ 1, "Level 1 only"},
{ 2, "Level 2 only"},
{ 3, "Level 1, Level 2"},
{ 0, NULL}
};
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#define ISIS_LSP_TYPE_UNUSED0 0
#define ISIS_LSP_TYPE_LEVEL_1 1
#define ISIS_LSP_TYPE_UNUSED2 2
#define ISIS_LSP_TYPE_LEVEL_2 3
static struct tok isis_lsp_istype_values[] = {
{ ISIS_LSP_TYPE_UNUSED0, "Unused 0x0 (invalid)"},
{ ISIS_LSP_TYPE_LEVEL_1, "L1 IS"},
{ ISIS_LSP_TYPE_UNUSED2, "Unused 0x2 (invalid)"},
{ ISIS_LSP_TYPE_LEVEL_2, "L2 IS"},
{ 0, NULL }
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};
/*
* Katz's point to point adjacency TLV uses codes to tell us the state of
* the remote adjacency. Enumerate them.
*/
#define ISIS_PTP_ADJ_UP 0
#define ISIS_PTP_ADJ_INIT 1
#define ISIS_PTP_ADJ_DOWN 2
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static struct tok isis_ptp_adjancey_values[] = {
{ ISIS_PTP_ADJ_UP, "Up" },
{ ISIS_PTP_ADJ_INIT, "Initializing" },
{ ISIS_PTP_ADJ_DOWN, "Down" },
{ 0, NULL}
};
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struct isis_tlv_ptp_adj {
u_int8_t adjacency_state;
u_int8_t extd_local_circuit_id[4];
u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
u_int8_t neighbor_extd_local_circuit_id[4];
};
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static void osi_print_cksum(const u_int8_t *pptr, u_int16_t checksum,
u_int checksum_offset, u_int length);
static int clnp_print(const u_int8_t *, u_int);
static void esis_print(const u_int8_t *, u_int);
static int isis_print(const u_int8_t *, u_int);
struct isis_metric_block {
u_int8_t metric_default;
u_int8_t metric_delay;
u_int8_t metric_expense;
u_int8_t metric_error;
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};
struct isis_tlv_is_reach {
struct isis_metric_block isis_metric_block;
u_int8_t neighbor_nodeid[NODE_ID_LEN];
};
struct isis_tlv_es_reach {
struct isis_metric_block isis_metric_block;
u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
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};
struct isis_tlv_ip_reach {
struct isis_metric_block isis_metric_block;
u_int8_t prefix[4];
u_int8_t mask[4];
};
static struct tok isis_is_reach_virtual_values[] = {
{ 0, "IsNotVirtual"},
{ 1, "IsVirtual"},
{ 0, NULL }
};
static struct tok isis_restart_flag_values[] = {
{ 0x1, "Restart Request"},
{ 0x2, "Restart Acknowledgement"},
{ 0x4, "Suppress adjacency advertisement"},
{ 0, NULL }
};
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struct isis_common_header {
u_int8_t nlpid;
u_int8_t fixed_len;
u_int8_t version; /* Protocol version */
u_int8_t id_length;
u_int8_t pdu_type; /* 3 MSbits are reserved */
u_int8_t pdu_version; /* Packet format version */
u_int8_t reserved;
u_int8_t max_area;
};
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struct isis_iih_lan_header {
u_int8_t circuit_type;
u_int8_t source_id[SYSTEM_ID_LEN];
u_int8_t holding_time[2];
u_int8_t pdu_len[2];
u_int8_t priority;
u_int8_t lan_id[NODE_ID_LEN];
};
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struct isis_iih_ptp_header {
u_int8_t circuit_type;
u_int8_t source_id[SYSTEM_ID_LEN];
u_int8_t holding_time[2];
u_int8_t pdu_len[2];
u_int8_t circuit_id;
};
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struct isis_lsp_header {
u_int8_t pdu_len[2];
u_int8_t remaining_lifetime[2];
u_int8_t lsp_id[LSP_ID_LEN];
u_int8_t sequence_number[4];
u_int8_t checksum[2];
u_int8_t typeblock;
};
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struct isis_csnp_header {
u_int8_t pdu_len[2];
u_int8_t source_id[NODE_ID_LEN];
u_int8_t start_lsp_id[LSP_ID_LEN];
u_int8_t end_lsp_id[LSP_ID_LEN];
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};
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struct isis_psnp_header {
u_int8_t pdu_len[2];
u_int8_t source_id[NODE_ID_LEN];
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};
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struct isis_tlv_lsp {
u_int8_t remaining_lifetime[2];
u_int8_t lsp_id[LSP_ID_LEN];
u_int8_t sequence_number[4];
u_int8_t checksum[2];
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};
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#define ISIS_COMMON_HEADER_SIZE (sizeof(struct isis_common_header))
#define ISIS_IIH_LAN_HEADER_SIZE (sizeof(struct isis_iih_lan_header))
#define ISIS_IIH_PTP_HEADER_SIZE (sizeof(struct isis_iih_ptp_header))
#define ISIS_LSP_HEADER_SIZE (sizeof(struct isis_lsp_header))
#define ISIS_CSNP_HEADER_SIZE (sizeof(struct isis_csnp_header))
#define ISIS_PSNP_HEADER_SIZE (sizeof(struct isis_psnp_header))
void isoclns_print(const u_int8_t *p, u_int length, u_int caplen)
{
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const struct isis_common_header *header;
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header = (const struct isis_common_header *)p;
if (caplen <= 1) { /* enough bytes on the wire ? */
printf("|OSI");
return;
}
if (eflag)
printf("OSI NLPID %s (0x%02x): ",
tok2str(nlpid_values,"Unknown",*p),
*p);
switch (*p) {
case NLPID_CLNP:
if (!clnp_print(p, length))
print_unknown_data(p,"\n\t",caplen);
break;
case NLPID_ESIS:
esis_print(p, length);
return;
case NLPID_ISIS:
if (!isis_print(p, length))
print_unknown_data(p,"\n\t",caplen);
break;
case NLPID_NULLNS:
(void)printf("%slength: %u",
eflag ? "" : ", ",
length);
break;
case NLPID_Q933:
q933_print(p+1, length-1);
break;
case NLPID_IP:
ip_print(gndo, p+1, length-1);
break;
#ifdef INET6
case NLPID_IP6:
ip6_print(p+1, length-1);
break;
#endif
case NLPID_PPP:
ppp_print(p+1, length-1);
break;
default:
if (!eflag)
printf("OSI NLPID 0x%02x unknown",*p);
(void)printf("%slength: %u",
eflag ? "" : ", ",
length);
if (caplen > 1)
print_unknown_data(p,"\n\t",caplen);
break;
}
}
#define CLNP_PDU_ER 1
#define CLNP_PDU_DT 28
#define CLNP_PDU_MD 29
#define CLNP_PDU_ERQ 30
#define CLNP_PDU_ERP 31
static struct tok clnp_pdu_values[] = {
{ CLNP_PDU_ER, "Error Report"},
{ CLNP_PDU_MD, "MD"},
{ CLNP_PDU_DT, "Data"},
{ CLNP_PDU_ERQ, "Echo Request"},
{ CLNP_PDU_ERP, "Echo Response"},
{ 0, NULL }
};
struct clnp_header_t {
u_int8_t nlpid;
u_int8_t length_indicator;
u_int8_t version;
u_int8_t lifetime; /* units of 500ms */
u_int8_t type;
u_int8_t segment_length[2];
u_int8_t cksum[2];
};
struct clnp_segment_header_t {
u_int8_t data_unit_id[2];
u_int8_t segment_offset[2];
u_int8_t total_length[2];
};
/*
* clnp_print
* Decode CLNP packets. Return 0 on error.
*/
static int clnp_print (const u_int8_t *pptr, u_int length)
{
const u_int8_t *optr,*source_address,*dest_address;
u_int li,tlen,nsap_offset,source_address_length,dest_address_length, clnp_pdu_type, clnp_flags;
const struct clnp_header_t *clnp_header;
const struct clnp_segment_header_t *clnp_segment_header;
u_int8_t rfd_error_major,rfd_error_minor;
clnp_header = (const struct clnp_header_t *) pptr;
TCHECK(*clnp_header);
li = clnp_header->length_indicator;
optr = pptr;
if (!eflag)
printf("CLNP");
/*
* Sanity checking of the header.
*/
if (clnp_header->version != CLNP_VERSION) {
printf("version %d packet not supported", clnp_header->version);
return (0);
}
/* FIXME further header sanity checking */
clnp_pdu_type = clnp_header->type & CLNP_PDU_TYPE_MASK;
clnp_flags = clnp_header->type & CLNP_FLAG_MASK;
pptr += sizeof(struct clnp_header_t);
li -= sizeof(struct clnp_header_t);
dest_address_length = *pptr;
dest_address = pptr + 1;
pptr += (1 + dest_address_length);
li -= (1 + dest_address_length);
source_address_length = *pptr;
source_address = pptr +1;
pptr += (1 + source_address_length);
li -= (1 + source_address_length);
if (vflag < 1) {
printf("%s%s > %s, %s, length %u",
eflag ? "" : ", ",
isonsap_string(source_address, source_address_length),
isonsap_string(dest_address, dest_address_length),
tok2str(clnp_pdu_values,"unknown (%u)",clnp_pdu_type),
length);
return (1);
}
printf("%slength %u",eflag ? "" : ", ",length);
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printf("\n\t%s PDU, hlen: %u, v: %u, lifetime: %u.%us, Segment PDU length: %u, checksum: 0x%04x",
tok2str(clnp_pdu_values, "unknown (%u)",clnp_pdu_type),
clnp_header->length_indicator,
clnp_header->version,
clnp_header->lifetime/2,
(clnp_header->lifetime%2)*5,
EXTRACT_16BITS(clnp_header->segment_length),
EXTRACT_16BITS(clnp_header->cksum));
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osi_print_cksum(optr, EXTRACT_16BITS(clnp_header->cksum), 7,
clnp_header->length_indicator);
printf("\n\tFlags [%s]",
bittok2str(clnp_flag_values,"none",clnp_flags));
printf("\n\tsource address (length %u): %s\n\tdest address (length %u): %s",
source_address_length,
isonsap_string(source_address, source_address_length),
dest_address_length,
isonsap_string(dest_address,dest_address_length));
if (clnp_flags & CLNP_SEGMENT_PART) {
clnp_segment_header = (const struct clnp_segment_header_t *) pptr;
TCHECK(*clnp_segment_header);
printf("\n\tData Unit ID: 0x%04x, Segment Offset: %u, Total PDU Length: %u",
EXTRACT_16BITS(clnp_segment_header->data_unit_id),
EXTRACT_16BITS(clnp_segment_header->segment_offset),
EXTRACT_16BITS(clnp_segment_header->total_length));
pptr+=sizeof(const struct clnp_segment_header_t);
li-=sizeof(const struct clnp_segment_header_t);
}
/* now walk the options */
while (li >= 2) {
u_int op, opli;
const u_int8_t *tptr;
TCHECK2(*pptr, 2);
if (li < 2) {
printf(", bad opts/li");
return (0);
}
op = *pptr++;
opli = *pptr++;
li -= 2;
TCHECK2(*pptr, opli);
if (opli > li) {
printf(", opt (%d) too long", op);
return (0);
}
li -= opli;
tptr = pptr;
tlen = opli;
printf("\n\t %s Option #%u, length %u, value: ",
tok2str(clnp_option_values,"Unknown",op),
op,
opli);
switch (op) {
case CLNP_OPTION_ROUTE_RECORDING: /* those two options share the format */
case CLNP_OPTION_SOURCE_ROUTING:
printf("%s %s",
tok2str(clnp_option_sr_rr_values,"Unknown",*tptr),
tok2str(clnp_option_sr_rr_string_values,"Unknown Option %u",op));
nsap_offset=*(tptr+1);
if (nsap_offset == 0) {
printf(" Bad NSAP offset (0)");
break;
}
nsap_offset-=1; /* offset to nsap list */
if (nsap_offset > tlen) {
printf(" Bad NSAP offset (past end of option)");
break;
}
tptr+=nsap_offset;
tlen-=nsap_offset;
while (tlen > 0) {
source_address_length=*tptr;
if (tlen < source_address_length+1) {
printf("\n\t NSAP address goes past end of option");
break;
}
if (source_address_length > 0) {
source_address=(tptr+1);
TCHECK2(*source_address, source_address_length);
printf("\n\t NSAP address (length %u): %s",
source_address_length,
isonsap_string(source_address, source_address_length));
}
tlen-=source_address_length+1;
}
break;
case CLNP_OPTION_PRIORITY:
printf("0x%1x", *tptr&0x0f);
break;
case CLNP_OPTION_QOS_MAINTENANCE:
printf("\n\t Format Code: %s",
tok2str(clnp_option_scope_values,"Reserved",*tptr&CLNP_OPTION_SCOPE_MASK));
if ((*tptr&CLNP_OPTION_SCOPE_MASK) == CLNP_OPTION_SCOPE_GLOBAL)
printf("\n\t QoS Flags [%s]",
bittok2str(clnp_option_qos_global_values,
"none",
*tptr&CLNP_OPTION_OPTION_QOS_MASK));
break;
case CLNP_OPTION_SECURITY:
printf("\n\t Format Code: %s, Security-Level %u",
tok2str(clnp_option_scope_values,"Reserved",*tptr&CLNP_OPTION_SCOPE_MASK),
*(tptr+1));
break;
case CLNP_OPTION_DISCARD_REASON:
rfd_error_major = (*tptr&0xf0) >> 4;
rfd_error_minor = *tptr&0x0f;
printf("\n\t Class: %s Error (0x%01x), %s (0x%01x)",
tok2str(clnp_option_rfd_class_values,"Unknown",rfd_error_major),
rfd_error_major,
tok2str(clnp_option_rfd_error_class[rfd_error_major],"Unknown",rfd_error_minor),
rfd_error_minor);
break;
case CLNP_OPTION_PADDING:
printf("padding data");
break;
/*
* FIXME those are the defined Options that lack a decoder
* you are welcome to contribute code ;-)
*/
default:
print_unknown_data(tptr,"\n\t ",opli);
break;
}
if (vflag > 1)
print_unknown_data(pptr,"\n\t ",opli);
pptr += opli;
}
switch (clnp_pdu_type) {
case CLNP_PDU_ER: /* fall through */
case CLNP_PDU_ERP:
TCHECK(*pptr);
if (*(pptr) == NLPID_CLNP) {
printf("\n\t-----original packet-----\n\t");
/* FIXME recursion protection */
clnp_print(pptr, length-clnp_header->length_indicator);
break;
}
case CLNP_PDU_DT:
case CLNP_PDU_MD:
case CLNP_PDU_ERQ:
default:
/* dump the PDU specific data */
if (length-(pptr-optr) > 0) {
printf("\n\t undecoded non-header data, length %u",length-clnp_header->length_indicator);
print_unknown_data(pptr,"\n\t ",length-(pptr-optr));
}
}
return (1);
trunc:
fputs("[|clnp]", stdout);
return (1);
}
#define ESIS_PDU_REDIRECT 6
#define ESIS_PDU_ESH 2
#define ESIS_PDU_ISH 4
static struct tok esis_pdu_values[] = {
{ ESIS_PDU_REDIRECT, "redirect"},
{ ESIS_PDU_ESH, "ESH"},
{ ESIS_PDU_ISH, "ISH"},
{ 0, NULL }
};
struct esis_header_t {
u_int8_t nlpid;
u_int8_t length_indicator;
u_int8_t version;
u_int8_t reserved;
u_int8_t type;
u_int8_t holdtime[2];
u_int8_t cksum[2];
};
static void
esis_print(const u_int8_t *pptr, u_int length)
{
const u_int8_t *optr;
u_int li,esis_pdu_type,source_address_length, source_address_number;
const struct esis_header_t *esis_header;
if (!eflag)
printf("ES-IS");
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if (length <= 2) {
if (qflag)
printf("bad pkt!");
else
printf("no header at all!");
return;
}
esis_header = (const struct esis_header_t *) pptr;
TCHECK(*esis_header);
li = esis_header->length_indicator;
optr = pptr;
/*
* Sanity checking of the header.
*/
if (esis_header->nlpid != NLPID_ESIS) {
printf(" nlpid 0x%02x packet not supported", esis_header->nlpid);
return;
}
if (esis_header->version != ESIS_VERSION) {
printf(" version %d packet not supported", esis_header->version);
return;
}
if (li > length) {
printf(" length indicator(%d) > PDU size (%d)!", li, length);
return;
}
if (li < sizeof(struct esis_header_t) + 2) {
printf(" length indicator < min PDU size %d:", li);
while (--length != 0)
printf("%02X", *pptr++);
return;
}
esis_pdu_type = esis_header->type & ESIS_PDU_TYPE_MASK;
if (vflag < 1) {
printf("%s%s, length %u",
eflag ? "" : ", ",
tok2str(esis_pdu_values,"unknown type (%u)",esis_pdu_type),
length);
return;
} else
printf("%slength %u\n\t%s (%u)",
eflag ? "" : ", ",
length,
tok2str(esis_pdu_values,"unknown type: %u", esis_pdu_type),
esis_pdu_type);
printf(", v: %u%s", esis_header->version, esis_header->version == ESIS_VERSION ? "" : "unsupported" );
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printf(", checksum: 0x%04x", EXTRACT_16BITS(esis_header->cksum));
osi_print_cksum(pptr, EXTRACT_16BITS(esis_header->cksum), 7, li);
printf(", holding time: %us, length indicator: %u",EXTRACT_16BITS(esis_header->holdtime),li);
if (vflag > 1)
print_unknown_data(optr,"\n\t",sizeof(struct esis_header_t));
pptr += sizeof(struct esis_header_t);
li -= sizeof(struct esis_header_t);
switch (esis_pdu_type) {
case ESIS_PDU_REDIRECT: {
const u_int8_t *dst, *snpa, *neta;
u_int dstl, snpal, netal;
TCHECK(*pptr);
if (li < 1) {
printf(", bad redirect/li");
return;
}
dstl = *pptr;
pptr++;
li--;
TCHECK2(*pptr, dstl);
if (li < dstl) {
printf(", bad redirect/li");
return;
}
dst = pptr;
pptr += dstl;
li -= dstl;
printf("\n\t %s", isonsap_string(dst,dstl));
TCHECK(*pptr);
if (li < 1) {
printf(", bad redirect/li");
return;
}
snpal = *pptr;
pptr++;
li--;
TCHECK2(*pptr, snpal);
if (li < snpal) {
printf(", bad redirect/li");
return;
}
snpa = pptr;
pptr += snpal;
li -= snpal;
TCHECK(*pptr);
if (li < 1) {
printf(", bad redirect/li");
return;
}
netal = *pptr;
pptr++;
TCHECK2(*pptr, netal);
if (li < netal) {
printf(", bad redirect/li");
return;
}
neta = pptr;
pptr += netal;
li -= netal;
if (netal == 0)
printf("\n\t %s", etheraddr_string(snpa));
else
printf("\n\t %s", isonsap_string(neta,netal));
break;
}
case ESIS_PDU_ESH:
TCHECK(*pptr);
if (li < 1) {
printf(", bad esh/li");
return;
}
source_address_number = *pptr;
pptr++;
li--;
printf("\n\t Number of Source Addresses: %u", source_address_number);
while (source_address_number > 0) {
TCHECK(*pptr);
if (li < 1) {
printf(", bad esh/li");
return;
}
source_address_length = *pptr;
pptr++;
li--;
TCHECK2(*pptr, source_address_length);
if (li < source_address_length) {
printf(", bad esh/li");
return;
}
printf("\n\t NET (length: %u): %s",
source_address_length,
isonsap_string(pptr,source_address_length));
pptr += source_address_length;
li -= source_address_length;
source_address_number--;
}
break;
case ESIS_PDU_ISH: {
TCHECK(*pptr);
if (li < 1) {
printf(", bad ish/li");
return;
}
source_address_length = *pptr;
pptr++;
li--;
TCHECK2(*pptr, source_address_length);
if (li < source_address_length) {
printf(", bad ish/li");
return;
}
printf("\n\t NET (length: %u): %s", source_address_length, isonsap_string(pptr, source_address_length));
pptr += source_address_length;
li -= source_address_length;
break;
}
default:
if (vflag <= 1) {
if (pptr < snapend)
print_unknown_data(pptr,"\n\t ",snapend-pptr);
}
return;
}
/* now walk the options */
while (li >= 2) {
u_int op, opli;
const u_int8_t *tptr;
TCHECK2(*pptr, 2);
if (li < 2) {
printf(", bad opts/li");
return;
}
op = *pptr++;
opli = *pptr++;
li -= 2;
if (opli > li) {
printf(", opt (%d) too long", op);
return;
}
li -= opli;
tptr = pptr;
printf("\n\t %s Option #%u, length %u, value: ",
tok2str(esis_option_values,"Unknown",op),
op,
opli);
switch (op) {
case ESIS_OPTION_ES_CONF_TIME:
TCHECK2(*pptr, 2);
printf("%us", EXTRACT_16BITS(tptr));
break;
case ESIS_OPTION_PROTOCOLS:
while (opli>0) {
TCHECK(*pptr);
printf("%s (0x%02x)",
tok2str(nlpid_values,
"unknown",
*tptr),
*tptr);
if (opli>1) /* further NPLIDs ? - put comma */
printf(", ");
tptr++;
opli--;
}
break;
/*
* FIXME those are the defined Options that lack a decoder
* you are welcome to contribute code ;-)
*/
case ESIS_OPTION_QOS_MAINTENANCE:
case ESIS_OPTION_SECURITY:
case ESIS_OPTION_PRIORITY:
case ESIS_OPTION_ADDRESS_MASK:
case ESIS_OPTION_SNPA_MASK:
default:
print_unknown_data(tptr,"\n\t ",opli);
break;
}
if (vflag > 1)
print_unknown_data(pptr,"\n\t ",opli);
pptr += opli;
}
trunc:
return;
}
2002-06-21 00:49:02 +00:00
/* shared routine for printing system, node and lsp-ids */
static char *
isis_print_id(const u_int8_t *cp, int id_len)
2002-06-21 00:49:02 +00:00
{
int i;
static char id[sizeof("xxxx.xxxx.xxxx.yy-zz")];
char *pos = id;
for (i = 1; i <= SYSTEM_ID_LEN; i++) {
snprintf(pos, sizeof(id) - (pos - id), "%02x", *cp++);
pos += strlen(pos);
if (i == 2 || i == 4)
*pos++ = '.';
2002-06-21 00:49:02 +00:00
}
if (id_len >= NODE_ID_LEN) {
snprintf(pos, sizeof(id) - (pos - id), ".%02x", *cp++);
pos += strlen(pos);
}
if (id_len == LSP_ID_LEN)
snprintf(pos, sizeof(id) - (pos - id), "-%02x", *cp);
return (id);
2002-06-21 00:49:02 +00:00
}
/* print the 4-byte metric block which is common found in the old-style TLVs */
2002-06-21 00:49:02 +00:00
static int
isis_print_metric_block (const struct isis_metric_block *isis_metric_block)
{
printf(", Default Metric: %d, %s",
ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_default),
ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_default) ? "External" : "Internal");
if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_delay))
printf("\n\t\t Delay Metric: %d, %s",
ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_delay),
ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_delay) ? "External" : "Internal");
if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_expense))
printf("\n\t\t Expense Metric: %d, %s",
ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_expense),
ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_expense) ? "External" : "Internal");
if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_error))
printf("\n\t\t Error Metric: %d, %s",
ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_error),
ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_error) ? "External" : "Internal");
return(1); /* everything is ok */
2002-06-21 00:49:02 +00:00
}
2002-06-21 00:49:02 +00:00
static int
isis_print_tlv_ip_reach (const u_int8_t *cp, const char *ident, int length)
2002-06-21 00:49:02 +00:00
{
2003-03-02 08:25:48 +00:00
int prefix_len;
2002-06-21 00:49:02 +00:00
const struct isis_tlv_ip_reach *tlv_ip_reach;
tlv_ip_reach = (const struct isis_tlv_ip_reach *)cp;
while (length > 0) {
if ((size_t)length < sizeof(*tlv_ip_reach)) {
printf("short IPv4 Reachability (%d vs %lu)",
length,
(unsigned long)sizeof(*tlv_ip_reach));
2002-06-21 00:49:02 +00:00
return (0);
}
if (!TTEST(*tlv_ip_reach))
return (0);
prefix_len = mask2plen(EXTRACT_32BITS(tlv_ip_reach->mask));
2002-06-21 00:49:02 +00:00
if (prefix_len == -1)
printf("%sIPv4 prefix: %s mask %s",
ident,
ipaddr_string((tlv_ip_reach->prefix)),
ipaddr_string((tlv_ip_reach->mask)));
else
printf("%sIPv4 prefix: %15s/%u",
ident,
ipaddr_string((tlv_ip_reach->prefix)),
prefix_len);
printf(", Distribution: %s, Metric: %u, %s",
ISIS_LSP_TLV_METRIC_UPDOWN(tlv_ip_reach->isis_metric_block.metric_default) ? "down" : "up",
ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_default),
ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_default) ? "External" : "Internal");
if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_delay))
printf("%s Delay Metric: %u, %s",
ident,
ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_delay),
ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_delay) ? "External" : "Internal");
if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_expense))
printf("%s Expense Metric: %u, %s",
ident,
ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_expense),
ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_expense) ? "External" : "Internal");
if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_error))
printf("%s Error Metric: %u, %s",
ident,
ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_error),
ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_error) ? "External" : "Internal");
2002-06-21 00:49:02 +00:00
length -= sizeof(struct isis_tlv_ip_reach);
tlv_ip_reach++;
}
return (1);
}
/*
* this is the common IP-REACH subTLV decoder it is called
* from various EXTD-IP REACH TLVs (135,235,236,237)
*/
static int
isis_print_ip_reach_subtlv (const u_int8_t *tptr,int subt,int subl,const char *ident) {
/* first lets see if we know the subTLVs name*/
printf("%s%s subTLV #%u, length: %u",
ident,
tok2str(isis_ext_ip_reach_subtlv_values,
"unknown",
subt),
subt,
subl);
if (!TTEST2(*tptr,subl))
goto trunctlv;
switch(subt) {
case ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR: /* fall through */
case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32:
while (subl >= 4) {
printf(", 0x%08x (=%u)",
EXTRACT_32BITS(tptr),
EXTRACT_32BITS(tptr));
tptr+=4;
subl-=4;
}
break;
case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64:
while (subl >= 8) {
printf(", 0x%08x%08x",
EXTRACT_32BITS(tptr),
EXTRACT_32BITS(tptr+4));
tptr+=8;
subl-=8;
}
break;
default:
if(!print_unknown_data(tptr,"\n\t\t ",
subl))
return(0);
break;
}
return(1);
trunctlv:
printf("%spacket exceeded snapshot",ident);
return(0);
}
/*
* this is the common IS-REACH subTLV decoder it is called
* from isis_print_ext_is_reach()
*/
static int
isis_print_is_reach_subtlv (const u_int8_t *tptr,u_int subt,u_int subl,const char *ident) {
2009-03-21 16:23:46 +00:00
u_int te_class,priority_level,gmpls_switch_cap;
union { /* int to float conversion buffer for several subTLVs */
float f;
u_int32_t i;
} bw;
/* first lets see if we know the subTLVs name*/
printf("%s%s subTLV #%u, length: %u",
ident,
tok2str(isis_ext_is_reach_subtlv_values,
"unknown",
subt),
subt,
subl);
if (!TTEST2(*tptr,subl))
goto trunctlv;
switch(subt) {
case ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP:
case ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID:
case ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID:
if (subl >= 4) {
printf(", 0x%08x", EXTRACT_32BITS(tptr));
2009-03-21 16:23:46 +00:00
if (subl == 8) /* rfc4205 */
printf(", 0x%08x", EXTRACT_32BITS(tptr+4));
}
break;
case ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR:
case ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR:
if (subl >= sizeof(struct in_addr))
printf(", %s", ipaddr_string(tptr));
break;
case ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW :
case ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW:
if (subl >= 4) {
bw.i = EXTRACT_32BITS(tptr);
printf(", %.3f Mbps", bw.f*8/1000000 );
}
break;
case ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW :
if (subl >= 32) {
for (te_class = 0; te_class < 8; te_class++) {
bw.i = EXTRACT_32BITS(tptr);
printf("%s TE-Class %u: %.3f Mbps",
ident,
te_class,
bw.f*8/1000000 );
tptr+=4;
}
}
break;
case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS: /* fall through */
case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD:
printf("%sBandwidth Constraints Model ID: %s (%u)",
ident,
tok2str(diffserv_te_bc_values, "unknown", *tptr),
*tptr);
tptr++;
/* decode BCs until the subTLV ends */
for (te_class = 0; te_class < (subl-1)/4; te_class++) {
bw.i = EXTRACT_32BITS(tptr);
printf("%s Bandwidth constraint CT%u: %.3f Mbps",
ident,
te_class,
bw.f*8/1000000 );
tptr+=4;
}
break;
case ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC:
if (subl >= 3)
printf(", %u", EXTRACT_24BITS(tptr));
break;
2009-03-21 16:23:46 +00:00
case ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE:
if (subl == 2) {
printf(", [ %s ] (0x%04x)",
bittok2str(isis_subtlv_link_attribute_values,
"Unknown",
EXTRACT_16BITS(tptr)),
EXTRACT_16BITS(tptr));
}
break;
case ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE:
if (subl >= 2) {
printf(", %s, Priority %u",
bittok2str(gmpls_link_prot_values, "none", *tptr),
*(tptr+1));
}
break;
case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR:
if (subl >= 36) {
2009-03-21 16:23:46 +00:00
gmpls_switch_cap = *tptr;
printf("%s Interface Switching Capability:%s",
ident,
2009-03-21 16:23:46 +00:00
tok2str(gmpls_switch_cap_values, "Unknown", gmpls_switch_cap));
printf(", LSP Encoding: %s",
tok2str(gmpls_encoding_values, "Unknown", *(tptr+1)));
tptr+=4;
printf("%s Max LSP Bandwidth:",ident);
for (priority_level = 0; priority_level < 8; priority_level++) {
bw.i = EXTRACT_32BITS(tptr);
printf("%s priority level %d: %.3f Mbps",
ident,
priority_level,
bw.f*8/1000000 );
tptr+=4;
}
subl-=36;
2009-03-21 16:23:46 +00:00
switch (gmpls_switch_cap) {
case GMPLS_PSC1:
case GMPLS_PSC2:
case GMPLS_PSC3:
case GMPLS_PSC4:
bw.i = EXTRACT_32BITS(tptr);
printf("%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f*8/1000000);
printf("%s Interface MTU: %u", ident, EXTRACT_16BITS(tptr+4));
break;
case GMPLS_TSC:
bw.i = EXTRACT_32BITS(tptr);
printf("%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f*8/1000000);
printf("%s Indication %s", ident,
tok2str(gmpls_switch_cap_tsc_indication_values, "Unknown (%u)", *(tptr+4)));
break;
default:
/* there is some optional stuff left to decode but this is as of yet
not specified so just lets hexdump what is left */
if(subl>0){
if(!print_unknown_data(tptr,"\n\t\t ",
subl))
return(0);
2009-03-21 16:23:46 +00:00
}
}
}
break;
default:
if(!print_unknown_data(tptr,"\n\t\t ",
subl))
return(0);
break;
}
return(1);
trunctlv:
printf("%spacket exceeded snapshot",ident);
return(0);
}
/*
* this is the common IS-REACH decoder it is called
* from various EXTD-IS REACH style TLVs (22,24,222)
*/
static int
isis_print_ext_is_reach (const u_int8_t *tptr,const char *ident, int tlv_type) {
char ident_buffer[20];
int subtlv_type,subtlv_len,subtlv_sum_len;
int proc_bytes = 0; /* how many bytes did we process ? */
if (!TTEST2(*tptr, NODE_ID_LEN))
return(0);
printf("%sIS Neighbor: %s", ident, isis_print_id(tptr, NODE_ID_LEN));
tptr+=(NODE_ID_LEN);
if (tlv_type != ISIS_TLV_IS_ALIAS_ID) { /* the Alias TLV Metric field is implicit 0 */
if (!TTEST2(*tptr, 3)) /* and is therefore skipped */
return(0);
printf(", Metric: %d",EXTRACT_24BITS(tptr));
tptr+=3;
}
if (!TTEST2(*tptr, 1))
return(0);
subtlv_sum_len=*(tptr++); /* read out subTLV length */
proc_bytes=NODE_ID_LEN+3+1;
printf(", %ssub-TLVs present",subtlv_sum_len ? "" : "no ");
if (subtlv_sum_len) {
printf(" (%u)",subtlv_sum_len);
while (subtlv_sum_len>0) {
if (!TTEST2(*tptr,2))
return(0);
subtlv_type=*(tptr++);
subtlv_len=*(tptr++);
/* prepend the ident string */
snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
if(!isis_print_is_reach_subtlv(tptr,subtlv_type,subtlv_len,ident_buffer))
return(0);
tptr+=subtlv_len;
subtlv_sum_len-=(subtlv_len+2);
proc_bytes+=(subtlv_len+2);
}
}
return(proc_bytes);
}
/*
* this is the common Multi Topology ID decoder
* it is called from various MT-TLVs (222,229,235,237)
*/
static int
isis_print_mtid (const u_int8_t *tptr,const char *ident) {
if (!TTEST2(*tptr, 2))
return(0);
printf("%s%s",
ident,
tok2str(isis_mt_values,
"Reserved for IETF Consensus",
ISIS_MASK_MTID(EXTRACT_16BITS(tptr))));
printf(" Topology (0x%03x), Flags: [%s]",
ISIS_MASK_MTID(EXTRACT_16BITS(tptr)),
bittok2str(isis_mt_flag_values, "none",ISIS_MASK_MTFLAGS(EXTRACT_16BITS(tptr))));
return(2);
}
/*
* this is the common extended IP reach decoder
* it is called from TLVs (135,235,236,237)
* we process the TLV and optional subTLVs and return
* the amount of processed bytes
*/
static int
isis_print_extd_ip_reach (const u_int8_t *tptr, const char *ident, u_int16_t afi) {
char ident_buffer[20];
#ifdef INET6
u_int8_t prefix[sizeof(struct in6_addr)]; /* shared copy buffer for IPv4 and IPv6 prefixes */
#else
u_int8_t prefix[sizeof(struct in_addr)]; /* shared copy buffer for IPv4 prefixes */
#endif
u_int metric, status_byte, bit_length, byte_length, sublen, processed, subtlvtype, subtlvlen;
if (!TTEST2(*tptr, 4))
return (0);
metric = EXTRACT_32BITS(tptr);
processed=4;
tptr+=4;
2009-03-21 16:23:46 +00:00
if (afi == AF_INET) {
if (!TTEST2(*tptr, 1)) /* fetch status byte */
return (0);
status_byte=*(tptr++);
bit_length = status_byte&0x3f;
if (bit_length > 32) {
printf("%sIPv4 prefix: bad bit length %u",
ident,
bit_length);
return (0);
}
processed++;
#ifdef INET6
2009-03-21 16:23:46 +00:00
} else if (afi == AF_INET6) {
if (!TTEST2(*tptr, 1)) /* fetch status & prefix_len byte */
return (0);
status_byte=*(tptr++);
bit_length=*(tptr++);
if (bit_length > 128) {
printf("%sIPv6 prefix: bad bit length %u",
ident,
bit_length);
return (0);
}
processed+=2;
#endif
} else
return (0); /* somebody is fooling us */
byte_length = (bit_length + 7) / 8; /* prefix has variable length encoding */
if (!TTEST2(*tptr, byte_length))
return (0);
memset(prefix, 0, sizeof prefix); /* clear the copy buffer */
memcpy(prefix,tptr,byte_length); /* copy as much as is stored in the TLV */
tptr+=byte_length;
processed+=byte_length;
2009-03-21 16:23:46 +00:00
if (afi == AF_INET)
printf("%sIPv4 prefix: %15s/%u",
ident,
ipaddr_string(prefix),
bit_length);
#ifdef INET6
2009-03-21 16:23:46 +00:00
if (afi == AF_INET6)
printf("%sIPv6 prefix: %s/%u",
ident,
ip6addr_string(prefix),
bit_length);
#endif
printf(", Distribution: %s, Metric: %u",
ISIS_MASK_TLV_EXTD_IP_UPDOWN(status_byte) ? "down" : "up",
metric);
2009-03-21 16:23:46 +00:00
if (afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
printf(", sub-TLVs present");
#ifdef INET6
2009-03-21 16:23:46 +00:00
if (afi == AF_INET6)
printf(", %s%s",
ISIS_MASK_TLV_EXTD_IP6_IE(status_byte) ? "External" : "Internal",
ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte) ? ", sub-TLVs present" : "");
#endif
2009-03-21 16:23:46 +00:00
if ((afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
#ifdef INET6
|| (afi == AF_INET6 && ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte))
#endif
) {
/* assume that one prefix can hold more
than one subTLV - therefore the first byte must reflect
the aggregate bytecount of the subTLVs for this prefix
*/
if (!TTEST2(*tptr, 1))
return (0);
sublen=*(tptr++);
processed+=sublen+1;
printf(" (%u)",sublen); /* print out subTLV length */
while (sublen>0) {
if (!TTEST2(*tptr,2))
return (0);
subtlvtype=*(tptr++);
subtlvlen=*(tptr++);
/* prepend the ident string */
snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
if(!isis_print_ip_reach_subtlv(tptr,subtlvtype,subtlvlen,ident_buffer))
return(0);
tptr+=subtlvlen;
sublen-=(subtlvlen+2);
}
}
return (processed);
}
/*
* isis_print
* Decode IS-IS packets. Return 0 on error.
*/
static int isis_print (const u_int8_t *p, u_int length)
{
const struct isis_common_header *isis_header;
2002-06-21 00:49:02 +00:00
const struct isis_iih_lan_header *header_iih_lan;
const struct isis_iih_ptp_header *header_iih_ptp;
Update tcpdump to 4.1.1. Changes: Thu. April 1, 2010. guy@alum.mit.edu. Summary for 4.1.1 tcpdump release Fix build on systems with PF, such as FreeBSD and OpenBSD. Don't blow up if a zero-length link-layer address is passed to linkaddr_string(). Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. Summary for 4.1.0 tcpdump release Fix printing of MAC addresses for VLAN frames with a length field Add some additional bounds checks and use the EXTRACT_ macros more Add a -b flag to print the AS number in BGP packets in ASDOT notation rather than ASPLAIN notation Add ICMPv6 RFC 5006 support Decode the access flags in NFS access requests Handle the new DLT_ for memory-mapped USB captures on Linux Make the default snapshot (-s) the maximum Print name of device (when -L is used) Support for OpenSolaris (and SXCE build 125 and later) Print new TCP flags Add support for RPL DIO Add support for TCP User Timeout (UTO) Add support for non-standard Ethertypes used by 3com PPPoE gear Add support for 802.11n and 802.11s Add support for Transparent Ethernet Bridge ethertype in GRE Add 4 byte AS support for BGP printer Add support for the MDT SAFI 66 BG printer Add basic IPv6 support to print-olsr Add USB printer Add printer for ForCES Handle frames with an FCS Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames Fix TCP sequence number printing Report 802.2 packets as 802.2 instead of 802.3 Don't include -L/usr/lib in LDFLAGS On x86_64 Linux, look in lib64 directory too Lots of code clean ups Autoconf clean ups Update testcases to make output changes Fix compiling with/out smi (--with{,out}-smi) Fix compiling without IPv6 support (--disable-ipv6)
2010-10-28 16:23:25 +00:00
struct isis_lsp_header *header_lsp;
2002-06-21 00:49:02 +00:00
const struct isis_csnp_header *header_csnp;
const struct isis_psnp_header *header_psnp;
const struct isis_tlv_lsp *tlv_lsp;
const struct isis_tlv_ptp_adj *tlv_ptp_adj;
const struct isis_tlv_is_reach *tlv_is_reach;
const struct isis_tlv_es_reach *tlv_es_reach;
2002-06-21 00:49:02 +00:00
u_int8_t pdu_type, max_area, id_length, tlv_type, tlv_len, tmp, alen, lan_alen, prefix_len;
u_int8_t ext_is_len, ext_ip_len, mt_len;
const u_int8_t *optr, *pptr, *tptr;
2002-06-21 00:49:02 +00:00
u_short packet_len,pdu_len;
u_int i,vendor_id;
Update tcpdump to 4.1.1. Changes: Thu. April 1, 2010. guy@alum.mit.edu. Summary for 4.1.1 tcpdump release Fix build on systems with PF, such as FreeBSD and OpenBSD. Don't blow up if a zero-length link-layer address is passed to linkaddr_string(). Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. Summary for 4.1.0 tcpdump release Fix printing of MAC addresses for VLAN frames with a length field Add some additional bounds checks and use the EXTRACT_ macros more Add a -b flag to print the AS number in BGP packets in ASDOT notation rather than ASPLAIN notation Add ICMPv6 RFC 5006 support Decode the access flags in NFS access requests Handle the new DLT_ for memory-mapped USB captures on Linux Make the default snapshot (-s) the maximum Print name of device (when -L is used) Support for OpenSolaris (and SXCE build 125 and later) Print new TCP flags Add support for RPL DIO Add support for TCP User Timeout (UTO) Add support for non-standard Ethertypes used by 3com PPPoE gear Add support for 802.11n and 802.11s Add support for Transparent Ethernet Bridge ethertype in GRE Add 4 byte AS support for BGP printer Add support for the MDT SAFI 66 BG printer Add basic IPv6 support to print-olsr Add USB printer Add printer for ForCES Handle frames with an FCS Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames Fix TCP sequence number printing Report 802.2 packets as 802.2 instead of 802.3 Don't include -L/usr/lib in LDFLAGS On x86_64 Linux, look in lib64 directory too Lots of code clean ups Autoconf clean ups Update testcases to make output changes Fix compiling with/out smi (--with{,out}-smi) Fix compiling without IPv6 support (--disable-ipv6)
2010-10-28 16:23:25 +00:00
int sigcheck;
2002-06-21 00:49:02 +00:00
packet_len=length;
optr = p; /* initialize the _o_riginal pointer to the packet start -
Update tcpdump to 4.1.1. Changes: Thu. April 1, 2010. guy@alum.mit.edu. Summary for 4.1.1 tcpdump release Fix build on systems with PF, such as FreeBSD and OpenBSD. Don't blow up if a zero-length link-layer address is passed to linkaddr_string(). Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. Summary for 4.1.0 tcpdump release Fix printing of MAC addresses for VLAN frames with a length field Add some additional bounds checks and use the EXTRACT_ macros more Add a -b flag to print the AS number in BGP packets in ASDOT notation rather than ASPLAIN notation Add ICMPv6 RFC 5006 support Decode the access flags in NFS access requests Handle the new DLT_ for memory-mapped USB captures on Linux Make the default snapshot (-s) the maximum Print name of device (when -L is used) Support for OpenSolaris (and SXCE build 125 and later) Print new TCP flags Add support for RPL DIO Add support for TCP User Timeout (UTO) Add support for non-standard Ethertypes used by 3com PPPoE gear Add support for 802.11n and 802.11s Add support for Transparent Ethernet Bridge ethertype in GRE Add 4 byte AS support for BGP printer Add support for the MDT SAFI 66 BG printer Add basic IPv6 support to print-olsr Add USB printer Add printer for ForCES Handle frames with an FCS Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames Fix TCP sequence number printing Report 802.2 packets as 802.2 instead of 802.3 Don't include -L/usr/lib in LDFLAGS On x86_64 Linux, look in lib64 directory too Lots of code clean ups Autoconf clean ups Update testcases to make output changes Fix compiling with/out smi (--with{,out}-smi) Fix compiling without IPv6 support (--disable-ipv6)
2010-10-28 16:23:25 +00:00
need it for parsing the checksum TLV and authentication
TLV verification */
isis_header = (const struct isis_common_header *)p;
TCHECK(*isis_header);
pptr = p+(ISIS_COMMON_HEADER_SIZE);
2002-06-21 00:49:02 +00:00
header_iih_lan = (const struct isis_iih_lan_header *)pptr;
header_iih_ptp = (const struct isis_iih_ptp_header *)pptr;
Update tcpdump to 4.1.1. Changes: Thu. April 1, 2010. guy@alum.mit.edu. Summary for 4.1.1 tcpdump release Fix build on systems with PF, such as FreeBSD and OpenBSD. Don't blow up if a zero-length link-layer address is passed to linkaddr_string(). Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. Summary for 4.1.0 tcpdump release Fix printing of MAC addresses for VLAN frames with a length field Add some additional bounds checks and use the EXTRACT_ macros more Add a -b flag to print the AS number in BGP packets in ASDOT notation rather than ASPLAIN notation Add ICMPv6 RFC 5006 support Decode the access flags in NFS access requests Handle the new DLT_ for memory-mapped USB captures on Linux Make the default snapshot (-s) the maximum Print name of device (when -L is used) Support for OpenSolaris (and SXCE build 125 and later) Print new TCP flags Add support for RPL DIO Add support for TCP User Timeout (UTO) Add support for non-standard Ethertypes used by 3com PPPoE gear Add support for 802.11n and 802.11s Add support for Transparent Ethernet Bridge ethertype in GRE Add 4 byte AS support for BGP printer Add support for the MDT SAFI 66 BG printer Add basic IPv6 support to print-olsr Add USB printer Add printer for ForCES Handle frames with an FCS Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames Fix TCP sequence number printing Report 802.2 packets as 802.2 instead of 802.3 Don't include -L/usr/lib in LDFLAGS On x86_64 Linux, look in lib64 directory too Lots of code clean ups Autoconf clean ups Update testcases to make output changes Fix compiling with/out smi (--with{,out}-smi) Fix compiling without IPv6 support (--disable-ipv6)
2010-10-28 16:23:25 +00:00
header_lsp = (struct isis_lsp_header *)pptr;
2002-06-21 00:49:02 +00:00
header_csnp = (const struct isis_csnp_header *)pptr;
header_psnp = (const struct isis_psnp_header *)pptr;
if (!eflag)
printf("IS-IS");
/*
* Sanity checking of the header.
*/
if (isis_header->version != ISIS_VERSION) {
printf("version %d packet not supported", isis_header->version);
2002-06-21 00:49:02 +00:00
return (0);
}
if ((isis_header->id_length != SYSTEM_ID_LEN) && (isis_header->id_length != 0)) {
printf("system ID length of %d is not supported",
isis_header->id_length);
2002-06-21 00:49:02 +00:00
return (0);
}
if (isis_header->pdu_version != ISIS_VERSION) {
printf("version %d packet not supported", isis_header->pdu_version);
2002-06-21 00:49:02 +00:00
return (0);
}
max_area = isis_header->max_area;
switch(max_area) {
case 0:
max_area = 3; /* silly shit */
break;
case 255:
printf("bad packet -- 255 areas");
2002-06-21 00:49:02 +00:00
return (0);
default:
break;
}
id_length = isis_header->id_length;
switch(id_length) {
case 0:
id_length = 6; /* silly shit again */
break;
case 1: /* 1-8 are valid sys-ID lenghts */
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
break;
case 255:
id_length = 0; /* entirely useless */
break;
default:
break;
}
/* toss any non 6-byte sys-ID len PDUs */
if (id_length != 6 ) {
printf("bad packet -- illegal sys-ID length (%u)", id_length);
return (0);
}
pdu_type=isis_header->pdu_type;
/* in non-verbose mode print the basic PDU Type plus PDU specific brief information*/
if (vflag < 1) {
printf("%s%s",
eflag ? "" : ", ",
tok2str(isis_pdu_values,"unknown PDU-Type %u",pdu_type));
switch (pdu_type) {
case ISIS_PDU_L1_LAN_IIH:
case ISIS_PDU_L2_LAN_IIH:
printf(", src-id %s",
isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN));
printf(", lan-id %s, prio %u",
isis_print_id(header_iih_lan->lan_id,NODE_ID_LEN),
header_iih_lan->priority);
break;
case ISIS_PDU_PTP_IIH:
printf(", src-id %s", isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN));
break;
case ISIS_PDU_L1_LSP:
case ISIS_PDU_L2_LSP:
printf(", lsp-id %s, seq 0x%08x, lifetime %5us",
isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
EXTRACT_32BITS(header_lsp->sequence_number),
EXTRACT_16BITS(header_lsp->remaining_lifetime));
break;
case ISIS_PDU_L1_CSNP:
case ISIS_PDU_L2_CSNP:
printf(", src-id %s", isis_print_id(header_csnp->source_id,NODE_ID_LEN));
break;
case ISIS_PDU_L1_PSNP:
case ISIS_PDU_L2_PSNP:
printf(", src-id %s", isis_print_id(header_psnp->source_id,NODE_ID_LEN));
break;
}
printf(", length %u", length);
return(1);
}
/* ok they seem to want to know everything - lets fully decode it */
printf("%slength %u", eflag ? "" : ", ",length);
printf("\n\t%s, hlen: %u, v: %u, pdu-v: %u, sys-id-len: %u (%u), max-area: %u (%u)",
tok2str(isis_pdu_values,
"unknown, type %u",
pdu_type),
isis_header->fixed_len,
isis_header->version,
isis_header->pdu_version,
id_length,
isis_header->id_length,
2002-06-21 00:49:02 +00:00
max_area,
isis_header->max_area);
if (vflag > 1) {
if(!print_unknown_data(optr,"\n\t",8)) /* provide the _o_riginal pointer */
return(0); /* for optionally debugging the common header */
}
2002-06-21 00:49:02 +00:00
switch (pdu_type) {
case ISIS_PDU_L1_LAN_IIH:
case ISIS_PDU_L2_LAN_IIH:
if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE)) {
2002-06-21 00:49:02 +00:00
printf(", bogus fixed header length %u should be %lu",
isis_header->fixed_len, (unsigned long)ISIS_IIH_LAN_HEADER_SIZE);
2002-06-21 00:49:02 +00:00
return (0);
}
2002-06-21 00:49:02 +00:00
pdu_len=EXTRACT_16BITS(header_iih_lan->pdu_len);
if (packet_len>pdu_len) {
packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
length=pdu_len;
}
2002-06-21 00:49:02 +00:00
TCHECK(*header_iih_lan);
printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN),
EXTRACT_16BITS(header_iih_lan->holding_time),
tok2str(isis_iih_circuit_type_values,
"unknown circuit type 0x%02x",
header_iih_lan->circuit_type));
printf("\n\t lan-id: %s, Priority: %u, PDU length: %u",
isis_print_id(header_iih_lan->lan_id, NODE_ID_LEN),
(header_iih_lan->priority) & ISIS_LAN_PRIORITY_MASK,
pdu_len);
if (vflag > 1) {
if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_LAN_HEADER_SIZE))
return(0);
}
2002-06-21 00:49:02 +00:00
packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
break;
2002-06-21 00:49:02 +00:00
case ISIS_PDU_PTP_IIH:
if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) {
2002-06-21 00:49:02 +00:00
printf(", bogus fixed header length %u should be %lu",
isis_header->fixed_len, (unsigned long)ISIS_IIH_PTP_HEADER_SIZE);
2002-06-21 00:49:02 +00:00
return (0);
}
2002-06-21 00:49:02 +00:00
pdu_len=EXTRACT_16BITS(header_iih_ptp->pdu_len);
if (packet_len>pdu_len) {
packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
length=pdu_len;
2002-06-21 00:49:02 +00:00
}
TCHECK(*header_iih_ptp);
printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN),
EXTRACT_16BITS(header_iih_ptp->holding_time),
tok2str(isis_iih_circuit_type_values,
"unknown circuit type 0x%02x",
header_iih_ptp->circuit_type));
printf("\n\t circuit-id: 0x%02x, PDU length: %u",
header_iih_ptp->circuit_id,
pdu_len);
if (vflag > 1) {
if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_PTP_HEADER_SIZE))
return(0);
}
2002-06-21 00:49:02 +00:00
packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
break;
2002-06-21 00:49:02 +00:00
case ISIS_PDU_L1_LSP:
case ISIS_PDU_L2_LSP:
if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) {
2002-06-21 00:49:02 +00:00
printf(", bogus fixed header length %u should be %lu",
isis_header->fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE);
2002-06-21 00:49:02 +00:00
return (0);
}
2002-06-21 00:49:02 +00:00
pdu_len=EXTRACT_16BITS(header_lsp->pdu_len);
if (packet_len>pdu_len) {
packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
length=pdu_len;
2002-06-21 00:49:02 +00:00
}
TCHECK(*header_lsp);
printf("\n\t lsp-id: %s, seq: 0x%08x, lifetime: %5us\n\t chksum: 0x%04x",
isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
EXTRACT_32BITS(header_lsp->sequence_number),
EXTRACT_16BITS(header_lsp->remaining_lifetime),
EXTRACT_16BITS(header_lsp->checksum));
2009-03-21 16:23:46 +00:00
osi_print_cksum((u_int8_t *)header_lsp->lsp_id,
EXTRACT_16BITS(header_lsp->checksum), 12, length-12);
Update tcpdump to 4.1.1. Changes: Thu. April 1, 2010. guy@alum.mit.edu. Summary for 4.1.1 tcpdump release Fix build on systems with PF, such as FreeBSD and OpenBSD. Don't blow up if a zero-length link-layer address is passed to linkaddr_string(). Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. Summary for 4.1.0 tcpdump release Fix printing of MAC addresses for VLAN frames with a length field Add some additional bounds checks and use the EXTRACT_ macros more Add a -b flag to print the AS number in BGP packets in ASDOT notation rather than ASPLAIN notation Add ICMPv6 RFC 5006 support Decode the access flags in NFS access requests Handle the new DLT_ for memory-mapped USB captures on Linux Make the default snapshot (-s) the maximum Print name of device (when -L is used) Support for OpenSolaris (and SXCE build 125 and later) Print new TCP flags Add support for RPL DIO Add support for TCP User Timeout (UTO) Add support for non-standard Ethertypes used by 3com PPPoE gear Add support for 802.11n and 802.11s Add support for Transparent Ethernet Bridge ethertype in GRE Add 4 byte AS support for BGP printer Add support for the MDT SAFI 66 BG printer Add basic IPv6 support to print-olsr Add USB printer Add printer for ForCES Handle frames with an FCS Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames Fix TCP sequence number printing Report 802.2 packets as 802.2 instead of 802.3 Don't include -L/usr/lib in LDFLAGS On x86_64 Linux, look in lib64 directory too Lots of code clean ups Autoconf clean ups Update testcases to make output changes Fix compiling with/out smi (--with{,out}-smi) Fix compiling without IPv6 support (--disable-ipv6)
2010-10-28 16:23:25 +00:00
/*
* Clear checksum and lifetime prior to signature verification.
*/
header_lsp->checksum[0] = 0;
header_lsp->checksum[1] = 0;
header_lsp->remaining_lifetime[0] = 0;
header_lsp->remaining_lifetime[1] = 0;
printf(", PDU length: %u, Flags: [ %s",
pdu_len,
ISIS_MASK_LSP_OL_BIT(header_lsp->typeblock) ? "Overload bit set, " : "");
2002-06-21 00:49:02 +00:00
if (ISIS_MASK_LSP_ATT_BITS(header_lsp->typeblock)) {
printf("%s", ISIS_MASK_LSP_ATT_DEFAULT_BIT(header_lsp->typeblock) ? "default " : "");
printf("%s", ISIS_MASK_LSP_ATT_DELAY_BIT(header_lsp->typeblock) ? "delay " : "");
printf("%s", ISIS_MASK_LSP_ATT_EXPENSE_BIT(header_lsp->typeblock) ? "expense " : "");
printf("%s", ISIS_MASK_LSP_ATT_ERROR_BIT(header_lsp->typeblock) ? "error " : "");
printf("ATT bit set, ");
}
printf("%s", ISIS_MASK_LSP_PARTITION_BIT(header_lsp->typeblock) ? "P bit set, " : "");
printf("%s ]", tok2str(isis_lsp_istype_values,"Unknown(0x%x)",ISIS_MASK_LSP_ISTYPE_BITS(header_lsp->typeblock)));
if (vflag > 1) {
if(!print_unknown_data(pptr,"\n\t ",ISIS_LSP_HEADER_SIZE))
return(0);
}
2002-06-21 00:49:02 +00:00
packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
break;
2002-06-21 00:49:02 +00:00
case ISIS_PDU_L1_CSNP:
case ISIS_PDU_L2_CSNP:
if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) {
2002-06-21 00:49:02 +00:00
printf(", bogus fixed header length %u should be %lu",
isis_header->fixed_len, (unsigned long)ISIS_CSNP_HEADER_SIZE);
2002-06-21 00:49:02 +00:00
return (0);
}
2002-06-21 00:49:02 +00:00
pdu_len=EXTRACT_16BITS(header_csnp->pdu_len);
if (packet_len>pdu_len) {
packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
length=pdu_len;
2002-06-21 00:49:02 +00:00
}
TCHECK(*header_csnp);
printf("\n\t source-id: %s, PDU length: %u",
isis_print_id(header_csnp->source_id, NODE_ID_LEN),
pdu_len);
printf("\n\t start lsp-id: %s",
isis_print_id(header_csnp->start_lsp_id, LSP_ID_LEN));
printf("\n\t end lsp-id: %s",
isis_print_id(header_csnp->end_lsp_id, LSP_ID_LEN));
if (vflag > 1) {
if(!print_unknown_data(pptr,"\n\t ",ISIS_CSNP_HEADER_SIZE))
return(0);
}
2002-06-21 00:49:02 +00:00
packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
break;
case ISIS_PDU_L1_PSNP:
case ISIS_PDU_L2_PSNP:
if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE)) {
2002-06-21 00:49:02 +00:00
printf("- bogus fixed header length %u should be %lu",
isis_header->fixed_len, (unsigned long)ISIS_PSNP_HEADER_SIZE);
2002-06-21 00:49:02 +00:00
return (0);
}
pdu_len=EXTRACT_16BITS(header_psnp->pdu_len);
if (packet_len>pdu_len) {
packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
length=pdu_len;
2002-06-21 00:49:02 +00:00
}
TCHECK(*header_psnp);
printf("\n\t source-id: %s, PDU length: %u",
isis_print_id(header_psnp->source_id, NODE_ID_LEN),
pdu_len);
if (vflag > 1) {
if(!print_unknown_data(pptr,"\n\t ",ISIS_PSNP_HEADER_SIZE))
return(0);
}
2002-06-21 00:49:02 +00:00
packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
break;
2002-06-21 00:49:02 +00:00
default:
if(!print_unknown_data(pptr,"\n\t ",length))
return(0);
return (0);
2002-06-21 00:49:02 +00:00
}
/*
* Now print the TLV's.
*/
while (packet_len >= 2) {
2002-06-21 00:49:02 +00:00
if (pptr == snapend) {
return (1);
}
if (!TTEST2(*pptr, 2)) {
printf("\n\t\t packet exceeded snapshot (%ld) bytes",
(long)(pptr-snapend));
2002-06-21 00:49:02 +00:00
return (1);
}
tlv_type = *pptr++;
tlv_len = *pptr++;
tmp =tlv_len; /* copy temporary len & pointer to packet data */
tptr = pptr;
packet_len -= 2;
if (tlv_len > packet_len) {
break;
}
/* first lets see if we know the TLVs name*/
printf("\n\t %s TLV #%u, length: %u",
tok2str(isis_tlv_values,
"unknown",
tlv_type),
tlv_type,
tlv_len);
2005-06-09 15:54:42 +00:00
if (tlv_len == 0) /* something is malformed */
continue;
2005-06-09 15:54:42 +00:00
/* now check if we have a decoder otherwise do a hexdump at the end*/
switch (tlv_type) {
case ISIS_TLV_AREA_ADDR:
2002-06-21 00:49:02 +00:00
if (!TTEST2(*tptr, 1))
goto trunctlv;
alen = *tptr++;
while (tmp && alen < tmp) {
printf("\n\t Area address (length: %u): %s",
alen,
isonsap_string(tptr,alen));
tptr += alen;
tmp -= alen + 1;
2002-06-21 00:49:02 +00:00
if (tmp==0) /* if this is the last area address do not attemt a boundary check */
break;
2002-06-21 00:49:02 +00:00
if (!TTEST2(*tptr, 1))
goto trunctlv;
alen = *tptr++;
}
break;
case ISIS_TLV_ISNEIGH:
2001-04-03 07:50:46 +00:00
while (tmp >= ETHER_ADDR_LEN) {
if (!TTEST2(*tptr, ETHER_ADDR_LEN))
goto trunctlv;
printf("\n\t SNPA: %s",isis_print_id(tptr,ETHER_ADDR_LEN));
tmp -= ETHER_ADDR_LEN;
tptr += ETHER_ADDR_LEN;
}
break;
2002-06-21 00:49:02 +00:00
case ISIS_TLV_ISNEIGH_VARLEN:
2005-06-09 15:54:42 +00:00
if (!TTEST2(*tptr, 1) || tmp < 3) /* min. TLV length */
goto trunctlv;
lan_alen = *tptr++; /* LAN address length */
if (lan_alen == 0) {
printf("\n\t LAN address length 0 bytes (invalid)");
break;
}
tmp --;
printf("\n\t LAN address length %u bytes ",lan_alen);
while (tmp >= lan_alen) {
if (!TTEST2(*tptr, lan_alen))
goto trunctlv;
printf("\n\t\tIS Neighbor: %s",isis_print_id(tptr,lan_alen));
tmp -= lan_alen;
tptr +=lan_alen;
}
break;
case ISIS_TLV_PADDING:
2002-06-21 00:49:02 +00:00
break;
case ISIS_TLV_MT_IS_REACH:
Update tcpdump to 4.1.1. Changes: Thu. April 1, 2010. guy@alum.mit.edu. Summary for 4.1.1 tcpdump release Fix build on systems with PF, such as FreeBSD and OpenBSD. Don't blow up if a zero-length link-layer address is passed to linkaddr_string(). Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. Summary for 4.1.0 tcpdump release Fix printing of MAC addresses for VLAN frames with a length field Add some additional bounds checks and use the EXTRACT_ macros more Add a -b flag to print the AS number in BGP packets in ASDOT notation rather than ASPLAIN notation Add ICMPv6 RFC 5006 support Decode the access flags in NFS access requests Handle the new DLT_ for memory-mapped USB captures on Linux Make the default snapshot (-s) the maximum Print name of device (when -L is used) Support for OpenSolaris (and SXCE build 125 and later) Print new TCP flags Add support for RPL DIO Add support for TCP User Timeout (UTO) Add support for non-standard Ethertypes used by 3com PPPoE gear Add support for 802.11n and 802.11s Add support for Transparent Ethernet Bridge ethertype in GRE Add 4 byte AS support for BGP printer Add support for the MDT SAFI 66 BG printer Add basic IPv6 support to print-olsr Add USB printer Add printer for ForCES Handle frames with an FCS Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames Fix TCP sequence number printing Report 802.2 packets as 802.2 instead of 802.3 Don't include -L/usr/lib in LDFLAGS On x86_64 Linux, look in lib64 directory too Lots of code clean ups Autoconf clean ups Update testcases to make output changes Fix compiling with/out smi (--with{,out}-smi) Fix compiling without IPv6 support (--disable-ipv6)
2010-10-28 16:23:25 +00:00
mt_len = isis_print_mtid(tptr, "\n\t ");
if (mt_len == 0) /* did something go wrong ? */
goto trunctlv;
tptr+=mt_len;
tmp-=mt_len;
while (tmp >= 2+NODE_ID_LEN+3+1) {
ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
if (ext_is_len == 0) /* did something go wrong ? */
2002-06-21 00:49:02 +00:00
goto trunctlv;
tmp-=ext_is_len;
tptr+=ext_is_len;
2002-06-21 00:49:02 +00:00
}
break;
case ISIS_TLV_IS_ALIAS_ID:
while (tmp >= NODE_ID_LEN+1) { /* is it worth attempting a decode ? */
ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
if (ext_is_len == 0) /* did something go wrong ? */
goto trunctlv;
tmp-=ext_is_len;
tptr+=ext_is_len;
}
break;
case ISIS_TLV_EXT_IS_REACH:
while (tmp >= NODE_ID_LEN+3+1) { /* is it worth attempting a decode ? */
ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
if (ext_is_len == 0) /* did something go wrong ? */
goto trunctlv;
tmp-=ext_is_len;
tptr+=ext_is_len;
2002-06-21 00:49:02 +00:00
}
break;
case ISIS_TLV_IS_REACH:
2002-06-21 00:49:02 +00:00
if (!TTEST2(*tptr,1)) /* check if there is one byte left to read out the virtual flag */
goto trunctlv;
printf("\n\t %s",
tok2str(isis_is_reach_virtual_values,
"bogus virtual flag 0x%02x",
*tptr++));
2002-06-21 00:49:02 +00:00
tlv_is_reach = (const struct isis_tlv_is_reach *)tptr;
while (tmp >= sizeof(struct isis_tlv_is_reach)) {
if (!TTEST(*tlv_is_reach))
goto trunctlv;
printf("\n\t IS Neighbor: %s",
isis_print_id(tlv_is_reach->neighbor_nodeid, NODE_ID_LEN));
isis_print_metric_block(&tlv_is_reach->isis_metric_block);
2002-06-21 00:49:02 +00:00
tmp -= sizeof(struct isis_tlv_is_reach);
tlv_is_reach++;
}
break;
case ISIS_TLV_ESNEIGH:
tlv_es_reach = (const struct isis_tlv_es_reach *)tptr;
while (tmp >= sizeof(struct isis_tlv_es_reach)) {
if (!TTEST(*tlv_es_reach))
goto trunctlv;
printf("\n\t ES Neighbor: %s",
isis_print_id(tlv_es_reach->neighbor_sysid,SYSTEM_ID_LEN));
isis_print_metric_block(&tlv_es_reach->isis_metric_block);
tmp -= sizeof(struct isis_tlv_es_reach);
tlv_es_reach++;
}
break;
2002-06-21 00:49:02 +00:00
/* those two TLVs share the same format */
case ISIS_TLV_INT_IP_REACH:
case ISIS_TLV_EXT_IP_REACH:
if (!isis_print_tlv_ip_reach(pptr, "\n\t ", tlv_len))
2002-06-21 00:49:02 +00:00
return (1);
break;
case ISIS_TLV_EXTD_IP_REACH:
while (tmp>0) {
2009-03-21 16:23:46 +00:00
ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET);
if (ext_ip_len == 0) /* did something go wrong ? */
goto trunctlv;
tptr+=ext_ip_len;
tmp-=ext_ip_len;
}
break;
2002-06-21 00:49:02 +00:00
case ISIS_TLV_MT_IP_REACH:
mt_len = isis_print_mtid(tptr, "\n\t ");
if (mt_len == 0) { /* did something go wrong ? */
goto trunctlv;
}
tptr+=mt_len;
tmp-=mt_len;
2002-06-21 00:49:02 +00:00
while (tmp>0) {
2009-03-21 16:23:46 +00:00
ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET);
if (ext_ip_len == 0) /* did something go wrong ? */
goto trunctlv;
tptr+=ext_ip_len;
tmp-=ext_ip_len;
2002-06-21 00:49:02 +00:00
}
break;
2002-06-21 00:49:02 +00:00
#ifdef INET6
case ISIS_TLV_IP6_REACH:
while (tmp>0) {
2009-03-21 16:23:46 +00:00
ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET6);
if (ext_ip_len == 0) /* did something go wrong ? */
goto trunctlv;
tptr+=ext_ip_len;
tmp-=ext_ip_len;
}
break;
2002-06-21 00:49:02 +00:00
case ISIS_TLV_MT_IP6_REACH:
mt_len = isis_print_mtid(tptr, "\n\t ");
if (mt_len == 0) { /* did something go wrong ? */
goto trunctlv;
}
tptr+=mt_len;
tmp-=mt_len;
2002-06-21 00:49:02 +00:00
while (tmp>0) {
2009-03-21 16:23:46 +00:00
ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET6);
if (ext_ip_len == 0) /* did something go wrong ? */
goto trunctlv;
tptr+=ext_ip_len;
tmp-=ext_ip_len;
2002-06-21 00:49:02 +00:00
}
break;
2002-06-21 00:49:02 +00:00
case ISIS_TLV_IP6ADDR:
while (tmp>=sizeof(struct in6_addr)) {
if (!TTEST2(*tptr, sizeof(struct in6_addr)))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t IPv6 interface address: %s",
2002-06-21 00:49:02 +00:00
ip6addr_string(tptr));
tptr += sizeof(struct in6_addr);
tmp -= sizeof(struct in6_addr);
2002-06-21 00:49:02 +00:00
}
break;
#endif
case ISIS_TLV_AUTH:
if (!TTEST2(*tptr, 1))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t %s: ",
tok2str(isis_subtlv_auth_values,
"unknown Authentication type 0x%02x",
*tptr));
switch (*tptr) {
case ISIS_SUBTLV_AUTH_SIMPLE:
for(i=1;i<tlv_len;i++) {
if (!TTEST2(*(tptr+i), 1))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("%c",*(tptr+i));
2002-06-21 00:49:02 +00:00
}
break;
case ISIS_SUBTLV_AUTH_MD5:
for(i=1;i<tlv_len;i++) {
if (!TTEST2(*(tptr+i), 1))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("%02x",*(tptr+i));
2002-06-21 00:49:02 +00:00
}
if (tlv_len != ISIS_SUBTLV_AUTH_MD5_LEN+1)
printf(", (malformed subTLV) ");
Update tcpdump to 4.1.1. Changes: Thu. April 1, 2010. guy@alum.mit.edu. Summary for 4.1.1 tcpdump release Fix build on systems with PF, such as FreeBSD and OpenBSD. Don't blow up if a zero-length link-layer address is passed to linkaddr_string(). Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu. Summary for 4.1.0 tcpdump release Fix printing of MAC addresses for VLAN frames with a length field Add some additional bounds checks and use the EXTRACT_ macros more Add a -b flag to print the AS number in BGP packets in ASDOT notation rather than ASPLAIN notation Add ICMPv6 RFC 5006 support Decode the access flags in NFS access requests Handle the new DLT_ for memory-mapped USB captures on Linux Make the default snapshot (-s) the maximum Print name of device (when -L is used) Support for OpenSolaris (and SXCE build 125 and later) Print new TCP flags Add support for RPL DIO Add support for TCP User Timeout (UTO) Add support for non-standard Ethertypes used by 3com PPPoE gear Add support for 802.11n and 802.11s Add support for Transparent Ethernet Bridge ethertype in GRE Add 4 byte AS support for BGP printer Add support for the MDT SAFI 66 BG printer Add basic IPv6 support to print-olsr Add USB printer Add printer for ForCES Handle frames with an FCS Handle 802.11n Control Wrapper, Block Acq Req and Block Ack frames Fix TCP sequence number printing Report 802.2 packets as 802.2 instead of 802.3 Don't include -L/usr/lib in LDFLAGS On x86_64 Linux, look in lib64 directory too Lots of code clean ups Autoconf clean ups Update testcases to make output changes Fix compiling with/out smi (--with{,out}-smi) Fix compiling without IPv6 support (--disable-ipv6)
2010-10-28 16:23:25 +00:00
#ifdef HAVE_LIBCRYPTO
sigcheck = signature_verify(optr, length,
(unsigned char *)tptr + 1);
#else
sigcheck = CANT_CHECK_SIGNATURE;
#endif
printf(" (%s)", tok2str(signature_check_values, "Unknown", sigcheck));
break;
case ISIS_SUBTLV_AUTH_PRIVATE:
default:
if(!print_unknown_data(tptr+1,"\n\t\t ",tlv_len-1))
return(0);
break;
2002-06-21 00:49:02 +00:00
}
break;
case ISIS_TLV_PTP_ADJ:
tlv_ptp_adj = (const struct isis_tlv_ptp_adj *)tptr;
if(tmp>=1) {
if (!TTEST2(*tptr, 1))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t Adjacency State: %s (%u)",
tok2str(isis_ptp_adjancey_values, "unknown", *tptr),
*tptr);
tmp--;
2002-06-21 00:49:02 +00:00
}
if(tmp>sizeof(tlv_ptp_adj->extd_local_circuit_id)) {
if (!TTEST2(tlv_ptp_adj->extd_local_circuit_id,
sizeof(tlv_ptp_adj->extd_local_circuit_id)))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t Extended Local circuit-ID: 0x%08x",
EXTRACT_32BITS(tlv_ptp_adj->extd_local_circuit_id));
tmp-=sizeof(tlv_ptp_adj->extd_local_circuit_id);
2002-06-21 00:49:02 +00:00
}
if(tmp>=SYSTEM_ID_LEN) {
if (!TTEST2(tlv_ptp_adj->neighbor_sysid, SYSTEM_ID_LEN))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t Neighbor System-ID: %s",
isis_print_id(tlv_ptp_adj->neighbor_sysid,SYSTEM_ID_LEN));
tmp-=SYSTEM_ID_LEN;
2002-06-21 00:49:02 +00:00
}
if(tmp>=sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)) {
if (!TTEST2(tlv_ptp_adj->neighbor_extd_local_circuit_id,
sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t Neighbor Extended Local circuit-ID: 0x%08x",
EXTRACT_32BITS(tlv_ptp_adj->neighbor_extd_local_circuit_id));
2002-06-21 00:49:02 +00:00
}
break;
2002-06-21 00:49:02 +00:00
case ISIS_TLV_PROTOCOLS:
printf("\n\t NLPID(s): ");
while (tmp>0) {
if (!TTEST2(*(tptr), 1))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("%s (0x%02x)",
tok2str(nlpid_values,
"unknown",
*tptr),
*tptr);
if (tmp>1) /* further NPLIDs ? - put comma */
2002-06-21 00:49:02 +00:00
printf(", ");
tptr++;
tmp--;
2002-06-21 00:49:02 +00:00
}
break;
2002-06-21 00:49:02 +00:00
case ISIS_TLV_TE_ROUTER_ID:
if (!TTEST2(*pptr, sizeof(struct in_addr)))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t Traffic Engineering Router ID: %s", ipaddr_string(pptr));
2002-06-21 00:49:02 +00:00
break;
case ISIS_TLV_IPADDR:
while (tmp>=sizeof(struct in_addr)) {
if (!TTEST2(*tptr, sizeof(struct in_addr)))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
tptr += sizeof(struct in_addr);
tmp -= sizeof(struct in_addr);
2002-06-21 00:49:02 +00:00
}
break;
case ISIS_TLV_HOSTNAME:
printf("\n\t Hostname: ");
while (tmp>0) {
if (!TTEST2(*tptr, 1))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("%c",*tptr++);
tmp--;
}
break;
case ISIS_TLV_SHARED_RISK_GROUP:
if (tmp < NODE_ID_LEN)
break;
if (!TTEST2(*tptr, NODE_ID_LEN))
goto trunctlv;
printf("\n\t IS Neighbor: %s", isis_print_id(tptr, NODE_ID_LEN));
tptr+=(NODE_ID_LEN);
tmp-=(NODE_ID_LEN);
if (tmp < 1)
break;
if (!TTEST2(*tptr, 1))
goto trunctlv;
printf(", Flags: [%s]", ISIS_MASK_TLV_SHARED_RISK_GROUP(*tptr++) ? "numbered" : "unnumbered");
tmp--;
if (tmp < sizeof(struct in_addr))
break;
if (!TTEST2(*tptr,sizeof(struct in_addr)))
goto trunctlv;
printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
tptr+=sizeof(struct in_addr);
tmp-=sizeof(struct in_addr);
if (tmp < sizeof(struct in_addr))
break;
if (!TTEST2(*tptr,sizeof(struct in_addr)))
goto trunctlv;
printf("\n\t IPv4 neighbor address: %s", ipaddr_string(tptr));
tptr+=sizeof(struct in_addr);
tmp-=sizeof(struct in_addr);
while (tmp>=4) {
if (!TTEST2(*tptr, 4))
goto trunctlv;
printf("\n\t Link-ID: 0x%08x", EXTRACT_32BITS(tptr));
tptr+=4;
tmp-=4;
2002-06-21 00:49:02 +00:00
}
break;
case ISIS_TLV_LSP:
tlv_lsp = (const struct isis_tlv_lsp *)tptr;
while(tmp>=sizeof(struct isis_tlv_lsp)) {
if (!TTEST((tlv_lsp->lsp_id)[LSP_ID_LEN-1]))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t lsp-id: %s",
isis_print_id(tlv_lsp->lsp_id, LSP_ID_LEN));
2002-06-21 00:49:02 +00:00
if (!TTEST2(tlv_lsp->sequence_number, 4))
goto trunctlv;
printf(", seq: 0x%08x",EXTRACT_32BITS(tlv_lsp->sequence_number));
2002-06-21 00:49:02 +00:00
if (!TTEST2(tlv_lsp->remaining_lifetime, 2))
goto trunctlv;
printf(", lifetime: %5ds",EXTRACT_16BITS(tlv_lsp->remaining_lifetime));
2002-06-21 00:49:02 +00:00
if (!TTEST2(tlv_lsp->checksum, 2))
goto trunctlv;
printf(", chksum: 0x%04x",EXTRACT_16BITS(tlv_lsp->checksum));
tmp-=sizeof(struct isis_tlv_lsp);
2002-06-21 00:49:02 +00:00
tlv_lsp++;
}
break;
case ISIS_TLV_CHECKSUM:
if (tmp < ISIS_TLV_CHECKSUM_MINLEN)
break;
if (!TTEST2(*tptr, ISIS_TLV_CHECKSUM_MINLEN))
2002-06-21 00:49:02 +00:00
goto trunctlv;
printf("\n\t checksum: 0x%04x ", EXTRACT_16BITS(tptr));
/* do not attempt to verify the checksum if it is zero
* most likely a HMAC-MD5 TLV is also present and
* to avoid conflicts the checksum TLV is zeroed.
* see rfc3358 for details
*/
2009-03-21 16:23:46 +00:00
osi_print_cksum(optr, EXTRACT_16BITS(tptr), tptr-optr, length);
2002-06-21 00:49:02 +00:00
break;
case ISIS_TLV_MT_SUPPORTED:
if (tmp < ISIS_TLV_MT_SUPPORTED_MINLEN)
break;
while (tmp>1) {
/* length can only be a multiple of 2, otherwise there is
2002-06-21 00:49:02 +00:00
something broken -> so decode down until length is 1 */
if (tmp!=1) {
mt_len = isis_print_mtid(tptr, "\n\t ");
if (mt_len == 0) /* did something go wrong ? */
goto trunctlv;
tptr+=mt_len;
tmp-=mt_len;
2002-06-21 00:49:02 +00:00
} else {
printf("\n\t malformed MT-ID");
2002-06-21 00:49:02 +00:00
break;
}
}
break;
case ISIS_TLV_RESTART_SIGNALING:
/* first attempt to decode the flags */
if (tmp < ISIS_TLV_RESTART_SIGNALING_FLAGLEN)
break;
if (!TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_FLAGLEN))
goto trunctlv;
printf("\n\t Flags [%s]",
bittok2str(isis_restart_flag_values, "none", *tptr));
tptr+=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
tmp-=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
/* is there anything other than the flags field? */
if (tmp == 0)
break;
if (tmp < ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN)
break;
if (!TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN))
goto trunctlv;
printf(", Remaining holding time %us", EXTRACT_16BITS(tptr));
tptr+=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
tmp-=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
/* is there an additional sysid field present ?*/
if (tmp == SYSTEM_ID_LEN) {
if (!TTEST2(*tptr, SYSTEM_ID_LEN))
goto trunctlv;
printf(", for %s",isis_print_id(tptr,SYSTEM_ID_LEN));
}
break;
2002-06-21 00:49:02 +00:00
case ISIS_TLV_IDRP_INFO:
if (tmp < ISIS_TLV_IDRP_INFO_MINLEN)
break;
if (!TTEST2(*tptr, ISIS_TLV_IDRP_INFO_MINLEN))
goto trunctlv;
printf("\n\t Inter-Domain Information Type: %s",
tok2str(isis_subtlv_idrp_values,
"Unknown (0x%02x)",
*tptr));
switch (*tptr++) {
case ISIS_SUBTLV_IDRP_ASN:
if (!TTEST2(*tptr, 2)) /* fetch AS number */
goto trunctlv;
printf("AS Number: %u",EXTRACT_16BITS(tptr));
break;
case ISIS_SUBTLV_IDRP_LOCAL:
case ISIS_SUBTLV_IDRP_RES:
default:
if(!print_unknown_data(tptr,"\n\t ",tlv_len-1))
return(0);
break;
}
break;
2002-06-21 00:49:02 +00:00
case ISIS_TLV_LSP_BUFFERSIZE:
if (tmp < ISIS_TLV_LSP_BUFFERSIZE_MINLEN)
break;
if (!TTEST2(*tptr, ISIS_TLV_LSP_BUFFERSIZE_MINLEN))
goto trunctlv;
printf("\n\t LSP Buffersize: %u",EXTRACT_16BITS(tptr));
break;
case ISIS_TLV_PART_DIS:
while (tmp >= SYSTEM_ID_LEN) {
if (!TTEST2(*tptr, SYSTEM_ID_LEN))
goto trunctlv;
printf("\n\t %s",isis_print_id(tptr,SYSTEM_ID_LEN));
tptr+=SYSTEM_ID_LEN;
tmp-=SYSTEM_ID_LEN;
}
break;
case ISIS_TLV_PREFIX_NEIGH:
if (tmp < sizeof(struct isis_metric_block))
break;
if (!TTEST2(*tptr, sizeof(struct isis_metric_block)))
goto trunctlv;
printf("\n\t Metric Block");
isis_print_metric_block((const struct isis_metric_block *)tptr);
tptr+=sizeof(struct isis_metric_block);
tmp-=sizeof(struct isis_metric_block);
while(tmp>0) {
if (!TTEST2(*tptr, 1))
goto trunctlv;
prefix_len=*tptr++; /* read out prefix length in semioctets*/
if (prefix_len < 2) {
printf("\n\t\tAddress: prefix length %u < 2", prefix_len);
break;
}
tmp--;
if (tmp < prefix_len/2)
break;
if (!TTEST2(*tptr, prefix_len/2))
goto trunctlv;
printf("\n\t\tAddress: %s/%u",
isonsap_string(tptr,prefix_len/2),
prefix_len*4);
tptr+=prefix_len/2;
tmp-=prefix_len/2;
}
break;
case ISIS_TLV_IIH_SEQNR:
if (tmp < ISIS_TLV_IIH_SEQNR_MINLEN)
break;
if (!TTEST2(*tptr, ISIS_TLV_IIH_SEQNR_MINLEN)) /* check if four bytes are on the wire */
goto trunctlv;
printf("\n\t Sequence number: %u", EXTRACT_32BITS(tptr) );
break;
case ISIS_TLV_VENDOR_PRIVATE:
if (tmp < ISIS_TLV_VENDOR_PRIVATE_MINLEN)
break;
if (!TTEST2(*tptr, ISIS_TLV_VENDOR_PRIVATE_MINLEN)) /* check if enough byte for a full oui */
goto trunctlv;
vendor_id = EXTRACT_24BITS(tptr);
printf("\n\t Vendor: %s (%u)",
tok2str(oui_values,"Unknown",vendor_id),
vendor_id);
tptr+=3;
tmp-=3;
if (tmp > 0) /* hexdump the rest */
if(!print_unknown_data(tptr,"\n\t\t",tmp))
return(0);
break;
/*
* FIXME those are the defined TLVs that lack a decoder
* you are welcome to contribute code ;-)
*/
case ISIS_TLV_DECNET_PHASE4:
case ISIS_TLV_LUCENT_PRIVATE:
case ISIS_TLV_IPAUTH:
case ISIS_TLV_NORTEL_PRIVATE1:
case ISIS_TLV_NORTEL_PRIVATE2:
default:
if (vflag <= 1) {
if(!print_unknown_data(pptr,"\n\t\t",tlv_len))
return(0);
}
break;
}
/* do we want to see an additionally hexdump ? */
if (vflag> 1) {
if(!print_unknown_data(pptr,"\n\t ",tlv_len))
return(0);
}
pptr += tlv_len;
packet_len -= tlv_len;
}
if (packet_len != 0) {
printf("\n\t %u straggler bytes", packet_len);
}
2002-06-21 00:49:02 +00:00
return (1);
trunc:
2002-06-21 00:49:02 +00:00
fputs("[|isis]", stdout);
return (1);
trunctlv:
printf("\n\t\t packet exceeded snapshot");
return(1);
}
2009-03-21 16:23:46 +00:00
static void
osi_print_cksum (const u_int8_t *pptr, u_int16_t checksum,
u_int checksum_offset, u_int length)
{
2009-03-21 16:23:46 +00:00
u_int16_t calculated_checksum;
2009-03-21 16:23:46 +00:00
/* do not attempt to verify the checksum if it is zero */
if (!checksum) {
printf("(unverified)");
} else {
calculated_checksum = create_osi_cksum(pptr, checksum_offset, length);
if (checksum == calculated_checksum) {
printf(" (correct)");
} else {
printf(" (incorrect should be 0x%04x)", calculated_checksum);
}
}
}
/*
* Local Variables:
* c-style: whitesmith
* c-basic-offset: 8
* End:
*/