diff options
| author | rpaulo <rpaulo@FreeBSD.org> | 2009-03-20 13:27:51 +0000 |
|---|---|---|
| committer | rpaulo <rpaulo@FreeBSD.org> | 2009-03-20 13:27:51 +0000 |
| commit | 04b1d6babecbe3eed463c150b6e933a2b6d342a9 (patch) | |
| tree | 36afae3dff76dde8d1cee5971ff7f1bc4922ad0f /contrib/tcpdump/print-isoclns.c | |
| parent | 3b74598d7ea581deadb14ec8ba1c77c14295a7c8 (diff) | |
| download | FreeBSD-src-04b1d6babecbe3eed463c150b6e933a2b6d342a9.zip FreeBSD-src-04b1d6babecbe3eed463c150b6e933a2b6d342a9.tar.gz | |
Flatten vendor/tcpdump and remove keyword expansion.
Diffstat (limited to 'contrib/tcpdump/print-isoclns.c')
| -rw-r--r-- | contrib/tcpdump/print-isoclns.c | 2709 |
1 files changed, 0 insertions, 2709 deletions
diff --git a/contrib/tcpdump/print-isoclns.c b/contrib/tcpdump/print-isoclns.c deleted file mode 100644 index d3935fc..0000000 --- a/contrib/tcpdump/print-isoclns.c +++ /dev/null @@ -1,2709 +0,0 @@ -/* - * 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 - * - * Extensively modified by Hannes Gredler (hannes@juniper.net) for more - * complete IS-IS & CLNP support. - */ - -#ifndef lint -static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-isoclns.c,v 1.133.2.25 2007/03/02 09:20:27 hannes Exp $ (LBL)"; -#endif - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <tcpdump-stdinc.h> - -#include <stdio.h> -#include <string.h> - -#include "interface.h" -#include "addrtoname.h" -#include "ethertype.h" -#include "ether.h" -#include "nlpid.h" -#include "extract.h" -#include "gmpls.h" -#include "oui.h" - -#define IPV4 1 /* AFI value */ -#define IPV6 2 /* AFI value */ - -/* - * IS-IS is defined in ISO 10589. Look there for protocol definitions. - */ - -#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 - -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 */ -#define ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID 4 /* draft-ietf-isis-gmpls-extensions */ -#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 */ -#define ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE 20 /* draft-ietf-isis-gmpls-extensions */ -#define ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR 21 /* draft-ietf-isis-gmpls-extensions */ -#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" }, - { 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 } -}; - -#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} -}; - -#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) - -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) - -#define ISIS_MASK_TLV_EXTD_IP6_IE(x) ((x)&0x40) -#define ISIS_MASK_TLV_EXTD_IP6_SUBTLV(x) ((x)&0x20) - -#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} -}; - -#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 } -}; - -/* - * 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 - -static struct tok isis_ptp_adjancey_values[] = { - { ISIS_PTP_ADJ_UP, "Up" }, - { ISIS_PTP_ADJ_INIT, "Initializing" }, - { ISIS_PTP_ADJ_DOWN, "Down" }, - { 0, NULL} -}; - -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]; -}; - -static int osi_cksum(const u_int8_t *, u_int); -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; -}; - -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]; -}; - -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 } -}; - -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; -}; - -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]; -}; - -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; -}; - -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; -}; - -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]; -}; - -struct isis_psnp_header { - u_int8_t pdu_len[2]; - u_int8_t source_id[NODE_ID_LEN]; -}; - -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]; -}; - -#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) -{ - const struct isis_common_header *header; - - 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); - - 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)); - - /* do not attempt to verify the checksum if it is zero */ - if (EXTRACT_16BITS(clnp_header->cksum) == 0) - printf("(unverified)"); - else printf("(%s)", osi_cksum(optr, clnp_header->length_indicator) ? "incorrect" : "correct"); - - 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"); - - 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" ); - printf(", checksum: 0x%04x ", EXTRACT_16BITS(esis_header->cksum)); - /* do not attempt to verify the checksum if it is zero */ - if (EXTRACT_16BITS(esis_header->cksum) == 0) - printf("(unverified)"); - else - printf("(%s)", osi_cksum(pptr, li) ? "incorrect" : "correct"); - - 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; -} - -/* shared routine for printing system, node and lsp-ids */ -static char * -isis_print_id(const u_int8_t *cp, int id_len) -{ - 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++ = '.'; - } - 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); -} - -/* print the 4-byte metric block which is common found in the old-style TLVs */ -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 */ -} - -static int -isis_print_tlv_ip_reach (const u_int8_t *cp, const char *ident, int length) -{ - int prefix_len; - 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)); - return (0); - } - - if (!TTEST(*tlv_ip_reach)) - return (0); - - prefix_len = mask2plen(EXTRACT_32BITS(tlv_ip_reach->mask)); - - 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"); - - 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) { - - u_int te_class,priority_level; - 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)); - if (subl == 8) /* draft-ietf-isis-gmpls-extensions */ - 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; - 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) { - printf("%s Interface Switching Capability:%s", - ident, - tok2str(gmpls_switch_cap_values, "Unknown", *(tptr))); - 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; - /* 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); - } - } - 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; - - if (afi == IPV4) { - 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 - } else if (afi == IPV6) { - 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; - - if (afi == IPV4) - printf("%sIPv4 prefix: %15s/%u", - ident, - ipaddr_string(prefix), - bit_length); -#ifdef INET6 - if (afi == IPV6) - 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); - - if (afi == IPV4 && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte)) - printf(", sub-TLVs present"); -#ifdef INET6 - if (afi == IPV6) - 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 - - if ((ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte) && afi == IPV4) || - (ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte) && afi == IPV6)) { - /* 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; - - const struct isis_iih_lan_header *header_iih_lan; - const struct isis_iih_ptp_header *header_iih_ptp; - const struct isis_lsp_header *header_lsp; - 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; - - 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; - u_short packet_len,pdu_len; - u_int i,vendor_id; - - packet_len=length; - optr = p; /* initialize the _o_riginal pointer to the packet start - - need it for parsing the checksum TLV */ - isis_header = (const struct isis_common_header *)p; - TCHECK(*isis_header); - pptr = p+(ISIS_COMMON_HEADER_SIZE); - header_iih_lan = (const struct isis_iih_lan_header *)pptr; - header_iih_ptp = (const struct isis_iih_ptp_header *)pptr; - header_lsp = (const struct isis_lsp_header *)pptr; - 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); - 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); - return (0); - } - - if (isis_header->pdu_version != ISIS_VERSION) { - printf("version %d packet not supported", isis_header->pdu_version); - 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"); - 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, - 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 */ - } - - 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)) { - printf(", bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)ISIS_IIH_LAN_HEADER_SIZE); - return (0); - } - - 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; - } - - 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); - } - - packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE); - pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE); - break; - - case ISIS_PDU_PTP_IIH: - if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) { - printf(", bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)ISIS_IIH_PTP_HEADER_SIZE); - return (0); - } - - 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; - } - - 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); - } - - packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE); - pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE); - break; - - case ISIS_PDU_L1_LSP: - case ISIS_PDU_L2_LSP: - if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) { - printf(", bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE); - return (0); - } - - 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; - } - - 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)); - - /* if this is a purge do not attempt to verify the checksum */ - if ( EXTRACT_16BITS(header_lsp->remaining_lifetime) == 0 && - EXTRACT_16BITS(header_lsp->checksum) == 0) - printf(" (purged)"); - else - /* verify the checksum - - * checking starts at the lsp-id field at byte position [12] - * hence the length needs to be reduced by 12 bytes */ - printf(" (%s)", (osi_cksum((u_int8_t *)header_lsp->lsp_id, length-12)) ? "incorrect" : "correct"); - - printf(", PDU length: %u, Flags: [ %s", - pdu_len, - ISIS_MASK_LSP_OL_BIT(header_lsp->typeblock) ? "Overload bit set, " : ""); - - 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); - } - - packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE); - pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE); - break; - - case ISIS_PDU_L1_CSNP: - case ISIS_PDU_L2_CSNP: - if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) { - printf(", bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)ISIS_CSNP_HEADER_SIZE); - return (0); - } - - 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; - } - - 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); - } - - 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)) { - printf("- bogus fixed header length %u should be %lu", - isis_header->fixed_len, (unsigned long)ISIS_PSNP_HEADER_SIZE); - 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; - } - - 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); - } - - packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE); - pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE); - break; - - default: - if(!print_unknown_data(pptr,"\n\t ",length)) - return(0); - return (0); - } - - /* - * Now print the TLV's. - */ - - while (packet_len >= 2) { - if (pptr == snapend) { - return (1); - } - - if (!TTEST2(*pptr, 2)) { - printf("\n\t\t packet exceeded snapshot (%ld) bytes", - (long)(pptr-snapend)); - 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); - - if (tlv_len == 0) /* something is malformed */ - continue; - - /* now check if we have a decoder otherwise do a hexdump at the end*/ - switch (tlv_type) { - case ISIS_TLV_AREA_ADDR: - 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; - if (tmp==0) /* if this is the last area address do not attemt a boundary check */ - break; - if (!TTEST2(*tptr, 1)) - goto trunctlv; - alen = *tptr++; - } - break; - case ISIS_TLV_ISNEIGH: - 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; - - case ISIS_TLV_ISNEIGH_VARLEN: - 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: - break; - - case ISIS_TLV_MT_IS_REACH: - while (tmp >= 2+NODE_ID_LEN+3+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; - - 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_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; - } - break; - case ISIS_TLV_IS_REACH: - 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++)); - 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); - 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; - - /* 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)) - return (1); - break; - - case ISIS_TLV_EXTD_IP_REACH: - while (tmp>0) { - ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", IPV4); - if (ext_ip_len == 0) /* did something go wrong ? */ - goto trunctlv; - tptr+=ext_ip_len; - tmp-=ext_ip_len; - } - break; - - 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; - - while (tmp>0) { - ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", IPV4); - if (ext_ip_len == 0) /* did something go wrong ? */ - goto trunctlv; - tptr+=ext_ip_len; - tmp-=ext_ip_len; - } - break; - -#ifdef INET6 - case ISIS_TLV_IP6_REACH: - while (tmp>0) { - ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", IPV6); - if (ext_ip_len == 0) /* did something go wrong ? */ - goto trunctlv; - tptr+=ext_ip_len; - tmp-=ext_ip_len; - } - break; - - 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; - - while (tmp>0) { - ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", IPV6); - if (ext_ip_len == 0) /* did something go wrong ? */ - goto trunctlv; - tptr+=ext_ip_len; - tmp-=ext_ip_len; - } - break; - - case ISIS_TLV_IP6ADDR: - while (tmp>=sizeof(struct in6_addr)) { - if (!TTEST2(*tptr, sizeof(struct in6_addr))) - goto trunctlv; - - printf("\n\t IPv6 interface address: %s", - ip6addr_string(tptr)); - - tptr += sizeof(struct in6_addr); - tmp -= sizeof(struct in6_addr); - } - break; -#endif - case ISIS_TLV_AUTH: - if (!TTEST2(*tptr, 1)) - 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)) - goto trunctlv; - printf("%c",*(tptr+i)); - } - break; - case ISIS_SUBTLV_AUTH_MD5: - for(i=1;i<tlv_len;i++) { - if (!TTEST2(*(tptr+i), 1)) - goto trunctlv; - printf("%02x",*(tptr+i)); - } - if (tlv_len != ISIS_SUBTLV_AUTH_MD5_LEN+1) - printf(", (malformed subTLV) "); - break; - case ISIS_SUBTLV_AUTH_PRIVATE: - default: - if(!print_unknown_data(tptr+1,"\n\t\t ",tlv_len-1)) - return(0); - break; - } - break; - - case ISIS_TLV_PTP_ADJ: - tlv_ptp_adj = (const struct isis_tlv_ptp_adj *)tptr; - if(tmp>=1) { - if (!TTEST2(*tptr, 1)) - goto trunctlv; - printf("\n\t Adjacency State: %s (%u)", - tok2str(isis_ptp_adjancey_values, "unknown", *tptr), - *tptr); - tmp--; - } - 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))) - 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); - } - if(tmp>=SYSTEM_ID_LEN) { - if (!TTEST2(tlv_ptp_adj->neighbor_sysid, SYSTEM_ID_LEN)) - goto trunctlv; - printf("\n\t Neighbor System-ID: %s", - isis_print_id(tlv_ptp_adj->neighbor_sysid,SYSTEM_ID_LEN)); - tmp-=SYSTEM_ID_LEN; - } - 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))) - goto trunctlv; - printf("\n\t Neighbor Extended Local circuit-ID: 0x%08x", - EXTRACT_32BITS(tlv_ptp_adj->neighbor_extd_local_circuit_id)); - } - break; - - case ISIS_TLV_PROTOCOLS: - printf("\n\t NLPID(s): "); - while (tmp>0) { - if (!TTEST2(*(tptr), 1)) - goto trunctlv; - printf("%s (0x%02x)", - tok2str(nlpid_values, - "unknown", - *tptr), - *tptr); - if (tmp>1) /* further NPLIDs ? - put comma */ - printf(", "); - tptr++; - tmp--; - } - break; - - case ISIS_TLV_TE_ROUTER_ID: - if (!TTEST2(*pptr, sizeof(struct in_addr))) - goto trunctlv; - printf("\n\t Traffic Engineering Router ID: %s", ipaddr_string(pptr)); - break; - - case ISIS_TLV_IPADDR: - while (tmp>=sizeof(struct in_addr)) { - 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); - } - break; - - case ISIS_TLV_HOSTNAME: - printf("\n\t Hostname: "); - while (tmp>0) { - if (!TTEST2(*tptr, 1)) - 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; - } - 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])) - goto trunctlv; - printf("\n\t lsp-id: %s", - isis_print_id(tlv_lsp->lsp_id, LSP_ID_LEN)); - if (!TTEST2(tlv_lsp->sequence_number, 4)) - goto trunctlv; - printf(", seq: 0x%08x",EXTRACT_32BITS(tlv_lsp->sequence_number)); - if (!TTEST2(tlv_lsp->remaining_lifetime, 2)) - goto trunctlv; - printf(", lifetime: %5ds",EXTRACT_16BITS(tlv_lsp->remaining_lifetime)); - if (!TTEST2(tlv_lsp->checksum, 2)) - goto trunctlv; - printf(", chksum: 0x%04x",EXTRACT_16BITS(tlv_lsp->checksum)); - tmp-=sizeof(struct isis_tlv_lsp); - tlv_lsp++; - } - break; - - case ISIS_TLV_CHECKSUM: - if (tmp < ISIS_TLV_CHECKSUM_MINLEN) - break; - if (!TTEST2(*tptr, ISIS_TLV_CHECKSUM_MINLEN)) - 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 - */ - if (EXTRACT_16BITS(tptr) == 0) - printf("(unverified)"); - else printf("(%s)", osi_cksum(optr, length) ? "incorrect" : "correct"); - 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 - 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; - } else { - printf("\n\t malformed MT-ID"); - 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; - - 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; - - 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); - } - return (1); - - trunc: - fputs("[|isis]", stdout); - return (1); - - trunctlv: - printf("\n\t\t packet exceeded snapshot"); - return(1); -} - -/* - * Verify the checksum. See 8473-1, Appendix C, section C.4. - */ - -static int -osi_cksum(const u_int8_t *tptr, u_int len) -{ - int32_t c0 = 0, c1 = 0; - - while ((int)--len >= 0) { - c0 += *tptr++; - c0 %= 255; - c1 += c0; - c1 %= 255; - } - return (c0 | c1); -} - - -/* - * Local Variables: - * c-style: whitesmith - * c-basic-offset: 8 - * End: - */ |
