* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Original code by Matt Thomas, Digital Equipment Corporation
+ *
+ * complete IS-IS & CLNP support.
*/
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-isoclns.c,v 1.21 2000-10-10 05:40:22 guy Exp $ (LBL)";
-#endif
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-
-#include <netinet/in.h>
+#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"
-
-#define NLPID_CLNS 129 /* 0x81 */
-#define NLPID_ESIS 130 /* 0x82 */
-#define NLPID_ISIS 131 /* 0x83 */
-#define NLPID_NULLNS 0
-
+#include "gmpls.h"
+#include "oui.h"
+#include "signature.h"
/*
* IS-IS is defined in ISO 10589. Look there for protocol definitions.
*/
#define SYSTEM_ID_LEN ETHER_ADDR_LEN
-#define ISIS_VERSION 1
-#define PDU_TYPE_MASK 0x1F
-#define PRIORITY_MASK 0x7F
+#define NODE_ID_LEN SYSTEM_ID_LEN+1
+#define LSP_ID_LEN SYSTEM_ID_LEN+2
-#define L1_LAN_IIH 15
-#define L2_LAN_IIH 16
-#define PTP_IIH 17
-#define L1_LS_PDU 18
-#define L2_LS_PDU 19
-#define L1_COMPLETE_SEQ_PDU 24
-#define L2_COMPLETE_SEQ_PDU 25
+#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 const 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 TLV_AREA_ADDR 1
-#define TLV_IS_REACH 2
-#define TLV_ES_REACH 3
-#define TLV_SUMMARY 5
-#define TLV_ISNEIGH 6
-#define TLV_PADDING 8
-#define TLV_LSP 9
-#define TLV_AUTHENT 10
-#define TLV_IP_REACH 128
-#define TLV_PROTOCOLS 129
-#define TLV_IP_EXTERN 130
-#define TLV_IDRP_INFO 131
-#define TLV_IPADDR 132
-#define TLV_IPAUTH 133
-#define TLV_PTP_ADJ 240
+#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_MT_PORT_CAP 143 /* rfc6165 */
+#define ISIS_TLV_MT_CAPABILITY 144 /* rfc6329 */
+#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 const 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_MT_PORT_CAP, "Multi-Topology-Aware Port Capability"},
+ { ISIS_TLV_MT_CAPABILITY, "Multi-Topology Capability"},
+ { 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 const 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 const 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 const struct tok clnp_option_rfd_class_values[] = {
+ { 0x0, "General"},
+ { 0x8, "Address"},
+ { 0x9, "Source Routeing"},
+ { 0xa, "Lifetime"},
+ { 0xb, "PDU Discarded"},
+ { 0xc, "Reassembly"},
+ { 0, NULL }
+};
+
+static const 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 const struct tok clnp_option_rfd_address_values[] = {
+ { 0x0, "Destination address unreachable"},
+ { 0x1, "Destination address unknown"},
+ { 0, NULL }
+};
+
+static const 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 const struct tok clnp_option_rfd_lifetime_values[] = {
+ { 0x0, "Lifetime expired while data unit in transit"},
+ { 0x1, "Lifetime expired during reassembly"},
+ { 0, NULL }
+};
+
+static const 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 const struct tok clnp_option_rfd_reassembly_values[] = {
+ { 0x0, "Reassembly interference"},
+ { 0, NULL }
+};
+
+/* array of 16 error-classes */
+static const 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 const 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 const struct tok clnp_option_sr_rr_values[] = {
+ { 0x0, "partial"},
+ { 0x1, "complete"},
+ { 0, NULL }
+};
+
+static const 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 const 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 /* 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 */
+#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 */
+
+#define ISIS_SUBTLV_SPB_METRIC 29 /* rfc6329 */
+
+static const 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_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" },
+ { ISIS_SUBTLV_SPB_METRIC, "SPB Metric" },
+ { 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 const 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 }
+};
+
+static const 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_GENERIC 3 /* rfc 5310 */
+#define ISIS_SUBTLV_AUTH_MD5 54
+#define ISIS_SUBTLV_AUTH_MD5_LEN 16
+#define ISIS_SUBTLV_AUTH_PRIVATE 255
+
+static const struct tok isis_subtlv_auth_values[] = {
+ { ISIS_SUBTLV_AUTH_SIMPLE, "simple text password"},
+ { ISIS_SUBTLV_AUTH_GENERIC, "Generic Crypto key-id"},
+ { 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 const 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 ISIS_SUBTLV_SPB_MCID 4
+#define ISIS_SUBTLV_SPB_DIGEST 5
+#define ISIS_SUBTLV_SPB_BVID 6
+
+#define ISIS_SUBTLV_SPB_INSTANCE 1
+#define ISIS_SUBTLV_SPBM_SI 3
+
+#define ISIS_SPB_MCID_LEN 51
+#define ISIS_SUBTLV_SPB_MCID_MIN_LEN 102
+#define ISIS_SUBTLV_SPB_DIGEST_MIN_LEN 33
+#define ISIS_SUBTLV_SPB_BVID_MIN_LEN 6
+#define ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN 19
+#define ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN 8
+
+static const struct tok isis_mt_port_cap_subtlv_values[] = {
+ { ISIS_SUBTLV_SPB_MCID, "SPB MCID" },
+ { ISIS_SUBTLV_SPB_DIGEST, "SPB Digest" },
+ { ISIS_SUBTLV_SPB_BVID, "SPB BVID" },
+ { 0, NULL }
+};
+
+static const struct tok isis_mt_capability_subtlv_values[] = {
+ { ISIS_SUBTLV_SPB_INSTANCE, "SPB Instance" },
+ { ISIS_SUBTLV_SPBM_SI, "SPBM Service Identifier and Unicast Address" },
+ { 0, NULL }
+};
+
+struct isis_spb_mcid {
+ u_int8_t format_id;
+ u_int8_t name[32];
+ u_int8_t revision_lvl[2];
+ u_int8_t digest[16];
+};
+
+struct isis_subtlv_spb_mcid {
+ struct isis_spb_mcid mcid;
+ struct isis_spb_mcid aux_mcid;
+};
+
+struct isis_subtlv_spb_instance {
+ u_int8_t cist_root_id[8];
+ u_int8_t cist_external_root_path_cost[4];
+ u_int8_t bridge_priority[2];
+ u_int8_t spsourceid[4];
+ u_int8_t no_of_trees;
+};
+
+#define CLNP_SEGMENT_PART 0x80
+#define CLNP_MORE_SEGMENTS 0x40
+#define CLNP_REQUEST_ER 0x20
+
+static const 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 const struct tok isis_mt_flag_values[] = {
+ { 0x4000, "ATT bit set"},
+ { 0x8000, "Overload 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 const 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 const 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 const 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
#define ISIS_PTP_ADJ_INIT 1
#define ISIS_PTP_ADJ_DOWN 2
-static int osi_cksum(const u_char *, int, u_char *);
-static void esis_print(const u_char *, u_int);
-static int isis_print(const u_char *, u_int);
+static const 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];
+};
-struct isis_ptp_adjancey_values {
- u_char id;
- char *name;
+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;
};
-static struct isis_ptp_adjancey_values isis_ptp_adjancey_values[] = {
- { ISIS_PTP_ADJ_UP, "UP" },
- { ISIS_PTP_ADJ_INIT, "INIT" },
- { ISIS_PTP_ADJ_DOWN, "DOWN" }
+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 const struct tok isis_is_reach_virtual_values[] = {
+ { 0, "IsNotVirtual"},
+ { 1, "IsVirtual"},
+ { 0, NULL }
+};
+
+static const struct tok isis_restart_flag_values[] = {
+ { 0x1, "Restart Request"},
+ { 0x2, "Restart Acknowledgement"},
+ { 0x4, "Suppress adjacency advertisement"},
+ { 0, NULL }
};
struct isis_common_header {
- u_char nlpid;
- u_char fixed_len;
- u_char version; /* Protocol version? */
- u_char id_length;
- u_char enc_pdu_type; /* 3 MSbs are reserved */
- u_char pkt_version; /* Packet format version? */
- u_char reserved;
- u_char enc_max_area;
-};
-
-struct isis_header {
- u_char nlpid;
- u_char fixed_len;
- u_char version; /* Protocol version? */
- u_char id_length;
- u_char enc_pdu_type; /* 3 MSbs are reserved */
- u_char pkt_version; /* Packet format version? */
- u_char reserved;
- u_char enc_max_area;
- u_char circuit;
- u_char enc_source_id[SYSTEM_ID_LEN];
- u_char enc_holding_time[2];
- u_char enc_packet_len[2];
- u_char enc_priority;
- u_char enc_lan_id[SYSTEM_ID_LEN+1];
-};
-struct isis_lan_header {
- u_char circuit;
- u_char enc_source_id[SYSTEM_ID_LEN];
- u_char enc_holding_time[2];
- u_char enc_packet_len[2];
- u_char enc_priority;
- u_char enc_lan_id[SYSTEM_ID_LEN+1];
-};
-
-struct isis_ptp_header {
- u_char circuit;
- u_char enc_source_id[SYSTEM_ID_LEN];
- u_char enc_holding_time[2];
- u_char enc_packet_len[2];
- u_char loc_circuit_id;
+ 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;
};
-#define ISIS_COMMON_HEADER_SIZE (sizeof(struct isis_common_header))
-#define ISIS_HEADER_SIZE (15+(SYSTEM_ID_LEN<<1))
-#define ISIS_PTP_HEADER_SIZE (14+SYSTEM_ID_LEN)
-#define L1_LS_PDU_HEADER_SIZE (21+SYSTEM_ID_LEN)
-#define L2_LS_PDU_HEADER_SIZE L1_LS_PDU_HEADER_SIZE
-#define L1_COMPLETE_SEQ_PDU_HEADER_SIZE 33
-#define L2_COMPLETE_SEQ_PDU_HEADER_SIZE L1_COMPLETE_SEQ_PDU_HEADER_SIZE
+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;
+};
-void
-isoclns_print(const u_char *p, u_int length, u_int caplen,
- const u_char *esrc, const u_char *edst)
+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)
{
- u_char pdu_type;
- struct isis_header *header;
-
- header = (struct isis_header *)p;
- pdu_type = header->enc_pdu_type & PDU_TYPE_MASK;
-
- if (caplen < 1) {
- printf("[|iso-clns] ");
- if (!eflag)
- printf("%s > %s",
- etheraddr_string(esrc),
- etheraddr_string(edst));
- return;
- }
+ 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_CLNS:
- printf("iso clns");
- if (!eflag)
- (void)printf(" %s > %s",
- etheraddr_string(esrc),
- etheraddr_string(edst));
+ case NLPID_CLNP:
+ if (!clnp_print(p, length))
+ print_unknown_data(gndo,p,"\n\t",caplen);
break;
case NLPID_ESIS:
- printf("iso esis");
- if (!eflag)
- (void)printf(" %s > %s",
- etheraddr_string(esrc),
- etheraddr_string(edst));
esis_print(p, length);
return;
case NLPID_ISIS:
- printf("iso isis");
- if (!eflag) {
- if(pdu_type != PTP_IIH)
- (void)printf(" %s > %s",
- etheraddr_string(esrc),
- etheraddr_string(edst));
- }
- (void)printf(" len=%d ", length);
if (!isis_print(p, length))
- default_print_unaligned(p, caplen);
+ print_unknown_data(gndo,p,"\n\t",caplen);
break;
case NLPID_NULLNS:
- printf("iso nullns");
- if (!eflag)
- (void)printf(" %s > %s",
- etheraddr_string(esrc),
- etheraddr_string(edst));
+ (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(gndo, p+1, length-1);
+ break;
+#endif
+
+ case NLPID_PPP:
+ ppp_print(p+1, length-1);
+ break;
+
default:
- printf("iso clns %02x", p[0]);
- if (!eflag)
- (void)printf(" %s > %s",
- etheraddr_string(esrc),
- etheraddr_string(edst));
- (void)printf(" len=%d ", length);
+ if (!eflag)
+ printf("OSI NLPID 0x%02x unknown",*p);
+ (void)printf("%slength: %u",
+ eflag ? "" : ", ",
+ length);
if (caplen > 1)
- default_print_unaligned(p, caplen);
+ print_unknown_data(gndo,p,"\n\t",caplen);
break;
}
}
-#define ESIS_REDIRECT 6
-#define ESIS_ESH 2
-#define ESIS_ISH 4
+#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 const 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));
+
+ 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(gndo,tptr,"\n\t ",opli);
+ break;
+ }
+ if (vflag > 1)
+ print_unknown_data(gndo,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(gndo,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 const struct tok esis_pdu_values[] = {
+ { ESIS_PDU_REDIRECT, "redirect"},
+ { ESIS_PDU_ESH, "ESH"},
+ { ESIS_PDU_ISH, "ISH"},
+ { 0, NULL }
+};
-struct esis_hdr {
- u_char version;
- u_char reserved;
- u_char type;
- u_char tmo[2];
- u_char cksum[2];
+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_char *p, u_int length)
+esis_print(const u_int8_t *pptr, u_int length)
{
- const u_char *ep;
- int li = p[1];
- const struct esis_hdr *eh = (const struct esis_hdr *) &p[2];
- u_char off[2];
+ 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 (length == 2) {
+ if (!eflag)
+ printf("ES-IS");
+
+ if (length <= 2) {
if (qflag)
- printf(" bad pkt!");
+ printf("bad pkt!");
else
- printf(" no header at all!");
+ printf("no header at all!");
return;
}
- ep = p + li;
+
+ 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) {
- if (qflag)
- printf(" bad pkt!");
- else
- printf(" LI(%d) > PDU size (%d)!", li, length);
- return;
+ printf(" length indicator(%d) > PDU size (%d)!", li, length);
+ return;
}
- if (li < sizeof(struct esis_hdr) + 2) {
- if (qflag)
- printf(" bad pkt!");
- else {
- printf(" too short for esis header %d:", li);
- while (--length != 0)
- printf("%02X", *p++);
- }
- return;
+
+ if (li < sizeof(struct esis_header_t) + 2) {
+ printf(" length indicator < min PDU size %d:", li);
+ while (--length != 0)
+ printf("%02X", *pptr++);
+ return;
}
- switch (eh->type & 0x1f) {
- case ESIS_REDIRECT:
- printf(" redirect");
- break;
+ esis_pdu_type = esis_header->type & ESIS_PDU_TYPE_MASK;
- case ESIS_ESH:
- printf(" esh");
- break;
+ 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);
- case ESIS_ISH:
- printf(" ish");
- break;
+ printf(", v: %u%s", esis_header->version, esis_header->version == ESIS_VERSION ? "" : "unsupported" );
+ printf(", checksum: 0x%04x", EXTRACT_16BITS(esis_header->cksum));
- default:
- printf(" type %d", eh->type & 0x1f);
- break;
- }
- off[0] = eh->cksum[0];
- off[1] = eh->cksum[1];
- if (vflag && osi_cksum(p, li, off)) {
- printf(" bad cksum (got %02x%02x)",
- eh->cksum[1], eh->cksum[0]);
- default_print(p, length);
- return;
- }
- if (eh->version != 1) {
- printf(" unsupported version %d", eh->version);
- return;
- }
- p += sizeof(*eh) + 2;
- li -= sizeof(*eh) + 2; /* protoid * li */
+ osi_print_cksum(pptr, EXTRACT_16BITS(esis_header->cksum), 7, li);
+
+ printf(", holding time: %us, length indicator: %u",EXTRACT_16BITS(esis_header->holdtime),li);
- switch (eh->type & 0x1f) {
- case ESIS_REDIRECT: {
- const u_char *dst, *snpa, *is;
+ if (vflag > 1)
+ print_unknown_data(gndo,optr,"\n\t",sizeof(struct esis_header_t));
- dst = p; p += *p + 1;
- if (p > snapend)
+ 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;
- printf("\n\t\t\t %s", isonsap_string(dst));
- snpa = p; p += *p + 1;
- is = p; p += *p + 1;
- if (p > snapend)
+ }
+ dstl = *pptr;
+ pptr++;
+ li--;
+ TCHECK2(*pptr, dstl);
+ if (li < dstl) {
+ printf(", bad redirect/li");
return;
- if (p > ep) {
- printf(" [bad li]");
+ }
+ dst = pptr;
+ pptr += dstl;
+ li -= dstl;
+ printf("\n\t %s", isonsap_string(dst,dstl));
+
+ TCHECK(*pptr);
+ if (li < 1) {
+ printf(", bad redirect/li");
return;
}
- if (is[0] == 0)
- printf(" > %s", etheraddr_string(&snpa[1]));
- else
- printf(" > %s", isonsap_string(is));
- li = ep - p;
- break;
- }
-#if 0
- case ESIS_ESH:
- printf(" esh");
- break;
-#endif
- case ESIS_ISH: {
- const u_char *is;
-
- is = p; p += *p + 1;
- if (p > ep) {
- printf(" [bad li]");
+ 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;
}
- if (p > snapend)
+ netal = *pptr;
+ pptr++;
+ TCHECK2(*pptr, netal);
+ if (li < netal) {
+ printf(", bad redirect/li");
return;
- if (!qflag)
- printf("\n\t\t\t %s", isonsap_string(is));
- li = ep - p;
+ }
+ 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:
- (void)printf(" len=%d", length);
- if (length && p < snapend) {
- length = snapend - p;
- default_print(p, length);
- }
- return;
+ if (vflag <= 1) {
+ if (pptr < snapend)
+ print_unknown_data(gndo,pptr,"\n\t ",snapend-pptr);
+ }
+ return;
}
- if (vflag)
- while (p < ep && li) {
- int op, opli;
- const u_char *q;
-
- if (snapend - p < 2)
- return;
- if (li < 2) {
- printf(" bad opts/li");
- return;
- }
- op = *p++;
- opli = *p++;
- li -= 2;
- if (opli > li) {
- printf(" opt (%d) too long", op);
- return;
- }
- li -= opli;
- q = p;
- p += opli;
- if (snapend < p)
- return;
- if (op == 198 && opli == 2) {
- printf(" tmo=%d", q[0] * 256 + q[1]);
- continue;
- }
- printf (" %d:<", op);
- while (--opli >= 0)
- printf("%02x", *q++);
- printf (">");
- }
+
+ /* now walk the options */
+ while (li != 0) {
+ u_int op, opli;
+ const u_int8_t *tptr;
+
+ if (li < 2) {
+ printf(", bad opts/li");
+ return;
+ }
+ TCHECK2(*pptr, 2);
+ 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:
+ if (opli == 2) {
+ TCHECK2(*pptr, 2);
+ printf("%us", EXTRACT_16BITS(tptr));
+ } else
+ printf("(bad length)");
+ 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(gndo,tptr,"\n\t ",opli);
+ break;
+ }
+ if (vflag > 1)
+ print_unknown_data(gndo,pptr,"\n\t ",opli);
+ pptr += opli;
+ }
+trunc:
+ return;
}
-/*
- * print_nsap
- * Print out an NSAP.
- */
static void
-print_nsap (register const u_char *cp, register int length)
+isis_print_mcid (const struct isis_spb_mcid *mcid)
+{
+ int i;
+
+ printf( "ID: %d, Name: ", mcid->format_id);
+
+ for(i=0; i<32; i++)
+ {
+ printf("%c", mcid->name[i]);
+ if(mcid->name[i] == '\0')
+ break;
+ }
+
+ printf("\n\t Lvl: %d",
+ EXTRACT_16BITS(mcid->revision_lvl));
+
+ printf( ", Digest: ");
+
+ for(i=0;i<16;i++)
+ printf("%.2x ",mcid->digest[i]);
+}
+
+static int
+isis_print_mt_port_cap_subtlv (const u_int8_t *tptr, int len)
+{
+ int stlv_type, stlv_len;
+ const struct isis_subtlv_spb_mcid *subtlv_spb_mcid;
+ int i;
+
+ while (len > 0)
+ {
+ stlv_type = *(tptr++);
+ stlv_len = *(tptr++);
+
+ /* first lets see if we know the subTLVs name*/
+ printf("\n\t %s subTLV #%u, length: %u",
+ tok2str(isis_mt_port_cap_subtlv_values, "unknown", stlv_type),
+ stlv_type,
+ stlv_len);
+
+ /*len -= TLV_TYPE_LEN_OFFSET;*/
+ len = len -2;
+
+ switch (stlv_type)
+ {
+ case ISIS_SUBTLV_SPB_MCID:
+ {
+ if (!TTEST2(*(tptr), ISIS_SUBTLV_SPB_MCID_MIN_LEN))
+ goto trunctlv;
+
+ subtlv_spb_mcid = (struct isis_subtlv_spb_mcid *)tptr;
+
+ printf( "\n\t MCID: ");
+ isis_print_mcid (&(subtlv_spb_mcid->mcid));
+
+ /*tptr += SPB_MCID_MIN_LEN;
+ len -= SPB_MCID_MIN_LEN; */
+
+ printf( "\n\t AUX-MCID: ");
+ isis_print_mcid (&(subtlv_spb_mcid->aux_mcid));
+
+ /*tptr += SPB_MCID_MIN_LEN;
+ len -= SPB_MCID_MIN_LEN; */
+ tptr = tptr + sizeof(struct isis_subtlv_spb_mcid);
+ len = len - sizeof(struct isis_subtlv_spb_mcid);
+
+ break;
+ }
+
+ case ISIS_SUBTLV_SPB_DIGEST:
+ {
+ if (!TTEST2(*(tptr), ISIS_SUBTLV_SPB_DIGEST_MIN_LEN))
+ goto trunctlv;
+
+ printf ("\n\t RES: %d V: %d A: %d D: %d",
+ (*(tptr) >> 5), (((*tptr)>> 4) & 0x01),
+ ((*(tptr) >> 2) & 0x03), ((*tptr) & 0x03));
+
+ tptr++;
+
+ printf( "\n\t Digest: ");
+
+ for(i=1;i<=8; i++)
+ {
+ printf("%08x ", EXTRACT_32BITS(tptr));
+ if (i%4 == 0 && i != 8)
+ printf("\n\t ");
+ tptr = tptr + 4;
+ }
+
+ len = len - ISIS_SUBTLV_SPB_DIGEST_MIN_LEN;
+
+ break;
+ }
+
+ case ISIS_SUBTLV_SPB_BVID:
+ {
+ if (!TTEST2(*(tptr), stlv_len))
+ goto trunctlv;
+
+ while (len)
+ {
+ if (!TTEST2(*(tptr), ISIS_SUBTLV_SPB_BVID_MIN_LEN))
+ goto trunctlv;
+
+ printf("\n\t ECT: %08x",
+ EXTRACT_32BITS(tptr));
+
+ tptr = tptr+4;
+
+ printf(" BVID: %d, U:%01x M:%01x ",
+ (EXTRACT_16BITS (tptr) >> 4) ,
+ (EXTRACT_16BITS (tptr) >> 3) & 0x01,
+ (EXTRACT_16BITS (tptr) >> 2) & 0x01);
+
+ tptr = tptr + 2;
+ len = len - ISIS_SUBTLV_SPB_BVID_MIN_LEN;
+ }
+
+ break;
+ }
+
+ default:
+ break;
+ }
+ }
+
+ return 0;
+
+ trunctlv:
+ printf("\n\t\t packet exceeded snapshot");
+ return(1);
+}
+
+static int
+isis_print_mt_capability_subtlv (const u_int8_t *tptr, int len)
+{
+ int stlv_type, stlv_len, tmp;
+
+ while (len > 0)
+ {
+ stlv_type = *(tptr++);
+ stlv_len = *(tptr++);
+
+ /* first lets see if we know the subTLVs name*/
+ printf("\n\t %s subTLV #%u, length: %u",
+ tok2str(isis_mt_capability_subtlv_values, "unknown", stlv_type),
+ stlv_type,
+ stlv_len);
+
+ len = len - 2;
+
+ switch (stlv_type)
+ {
+ case ISIS_SUBTLV_SPB_INSTANCE:
+
+ if (!TTEST2(*(tptr), ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN))
+ goto trunctlv;
+
+ printf("\n\t CIST Root-ID: %08x", EXTRACT_32BITS(tptr));
+ tptr = tptr+4;
+ printf(" %08x", EXTRACT_32BITS(tptr));
+ tptr = tptr+4;
+ printf(", Path Cost: %08x", EXTRACT_32BITS(tptr));
+ tptr = tptr+4;
+ printf(", Prio: %d", EXTRACT_16BITS(tptr));
+ tptr = tptr + 2;
+ printf("\n\t RES: %d",
+ EXTRACT_16BITS(tptr) >> 5);
+ printf(", V: %d",
+ (EXTRACT_16BITS(tptr) >> 4) & 0x0001);
+ printf(", SPSource-ID: %d",
+ (EXTRACT_32BITS(tptr) & 0x000fffff));
+ tptr = tptr+4;
+ printf(", No of Trees: %x", *(tptr));
+
+ tmp = *(tptr++);
+
+ len = len - ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN;
+
+ while (tmp)
+ {
+ if (!TTEST2(*(tptr), ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN))
+ goto trunctlv;
+
+ printf ("\n\t U:%d, M:%d, A:%d, RES:%d",
+ *(tptr) >> 7, (*(tptr) >> 6) & 0x01,
+ (*(tptr) >> 5) & 0x01, (*(tptr) & 0x1f));
+
+ tptr++;
+
+ printf (", ECT: %08x", EXTRACT_32BITS(tptr));
+
+ tptr = tptr + 4;
+
+ printf (", BVID: %d, SPVID: %d",
+ (EXTRACT_24BITS(tptr) >> 12) & 0x000fff,
+ EXTRACT_24BITS(tptr) & 0x000fff);
+
+ tptr = tptr + 3;
+ len = len - ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN;
+ tmp--;
+ }
+
+ break;
+
+ case ISIS_SUBTLV_SPBM_SI:
+
+ if (!TTEST2(*(tptr), 6))
+ goto trunctlv;
+
+ printf("\n\t BMAC: %08x", EXTRACT_32BITS(tptr));
+ tptr = tptr+4;
+ printf("%04x", EXTRACT_16BITS(tptr));
+ tptr = tptr+2;
+
+ printf (", RES: %d, VID: %d", EXTRACT_16BITS(tptr) >> 12,
+ (EXTRACT_16BITS(tptr)) & 0x0fff);
+
+ tptr = tptr+2;
+ len = len - 8;
+ stlv_len = stlv_len - 8;
+
+ while (stlv_len)
+ {
+ printf("\n\t T: %d, R: %d, RES: %d, ISID: %d",
+ (EXTRACT_32BITS(tptr) >> 31),
+ (EXTRACT_32BITS(tptr) >> 30) & 0x01,
+ (EXTRACT_32BITS(tptr) >> 24) & 0x03f,
+ (EXTRACT_32BITS(tptr)) & 0x0ffffff);
+
+ tptr = tptr + 4;
+ len = len - 4;
+ stlv_len = stlv_len - 4;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+ }
+ return 0;
+
+ trunctlv:
+ printf("\n\t\t packet exceeded snapshot");
+ return(1);
+}
+
+
+/* shared routine for printing system, node and lsp-ids */
+static char *
+isis_print_id(const u_int8_t *cp, int id_len)
{
int i;
-
- for (i = 0; i < length; i++) {
- printf("%02x", *cp++);
- if (((i & 1) == 0) && (i + 1 < length)) {
- printf(".");
+ 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(gndo,tptr,"\n\t\t ",
+ subl))
+ return(0);
+ break;
}
+ return(1);
+
+trunctlv:
+ printf("%spacket exceeded snapshot",ident);
+ return(0);
}
/*
- * isis_print
- * Decode IS-IS packets. Return 0 on error.
- *
- * So far, this is only smart enough to print IIH's. Someday...
+ * this is the common IS-REACH subTLV decoder it is called
+ * from isis_print_ext_is_reach()
*/
static int
-isis_print (const u_char *p, u_int length)
-{
- struct isis_header *header;
- struct isis_ptp_header *header_ptp;
- u_char pdu_type, max_area, priority, *pptr, type, len, *tptr, tmp, alen;
- u_short packet_len, holding_time;
- int i;
+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,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));
+ 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;
+ 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_SPB_METRIC:
+ if (subl >= 6) {
+ printf (", LM: %u", EXTRACT_24BITS(tptr));
+ tptr=tptr+3;
+ printf (", P: %u", *(tptr));
+ printf (", P-ID: %u", EXTRACT_16BITS(++tptr));
+ }
+ break;
+ case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR:
+ if (subl >= 36) {
+ gmpls_switch_cap = *tptr;
+ printf("%s Interface Switching Capability:%s",
+ ident,
+ 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;
+ 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(gndo,tptr,"\n\t\t ",
+ subl))
+ return(0);
+ }
+ }
+ }
+ break;
+ default:
+ if(!print_unknown_data(gndo,tptr,"\n\t\t ",
+ subl))
+ return(0);
+ break;
+ }
+ return(1);
+
+trunctlv:
+ printf("%spacket exceeded snapshot",ident);
+ return(0);
+}
- header_ptp = (struct isis_ptp_header *)header = (struct isis_header *)p;
- printf("\n\t\t\t");
- /*
- * Sanity checking of the header.
- */
- if (header->nlpid != NLPID_ISIS) {
- printf(" coding error!");
- 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 (header->version != ISIS_VERSION) {
- printf(" version %d packet not supported", header->version);
- return(0);
+ 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 ((header->id_length != SYSTEM_ID_LEN) && (header->id_length != 0)) {
- printf(" system ID length of %d is not supported",
- header->id_length);
- return(0);
+ 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 == 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
+ } 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;
+
+ if (afi == AF_INET)
+ printf("%sIPv4 prefix: %15s/%u",
+ ident,
+ ipaddr_string(prefix),
+ bit_length);
+#ifdef INET6
+ 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);
+
+ if (afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
+ printf(", sub-TLVs present");
+#ifdef INET6
+ 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
+
+ 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);
+}
- if ((header->fixed_len != ISIS_HEADER_SIZE) &&
- (header->fixed_len != ISIS_PTP_HEADER_SIZE) &&
- (header->fixed_len != L1_LS_PDU_HEADER_SIZE) &&
- (header-> fixed_len != L1_COMPLETE_SEQ_PDU_HEADER_SIZE) ) {
- printf(" bogus fixed header length %u",
- header->fixed_len);
- return(0);
+/*
+ * 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;
+ 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, key_id;
+ u_int i,vendor_id;
+ int sigcheck;
+
+ packet_len=length;
+ optr = p; /* initialize the _o_riginal pointer to the packet start -
+ 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);
+ header_iih_lan = (const struct isis_iih_lan_header *)pptr;
+ header_iih_ptp = (const struct isis_iih_ptp_header *)pptr;
+ header_lsp = (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);
}
- pdu_type = header->enc_pdu_type & PDU_TYPE_MASK;
- if ((pdu_type != L1_LAN_IIH) && (pdu_type != L2_LAN_IIH) &&
- (pdu_type != PTP_IIH) &&
- (pdu_type != L1_COMPLETE_SEQ_PDU) &&
- (pdu_type != L2_COMPLETE_SEQ_PDU) ) {
- printf(" PDU type (%d) not supported", pdu_type);
- 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 (header->pkt_version != ISIS_VERSION) {
- printf(" version %d packet not supported", header->pkt_version);
- return(0);
+
+ if (isis_header->pdu_version != ISIS_VERSION) {
+ printf("version %d packet not supported", isis_header->pdu_version);
+ return (0);
}
- max_area = header->enc_max_area;
+ max_area = isis_header->max_area;
switch(max_area) {
case 0:
- max_area = 3; /* silly shit */
+ max_area = 3; /* silly shit */
break;
case 255:
- printf(" bad packet -- 255 areas");
- return(0);
+ printf("bad packet -- 255 areas");
+ return (0);
default:
break;
}
- switch (header->circuit) {
+ id_length = isis_header->id_length;
+ switch(id_length) {
case 0:
- printf(" PDU with circuit type 0");
- return(0);
- case 1:
- if (pdu_type == L2_LAN_IIH) {
- printf(" L2 IIH on an L1 only circuit");
- return(0);
- }
+ id_length = 6; /* silly shit again */
break;
+ case 1: /* 1-8 are valid sys-ID lenghts */
case 2:
- if (pdu_type == L1_LAN_IIH) {
- printf(" L1 IIH on an L2 only circuit");
- return(0);
- }
- break;
case 3:
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ break;
+ case 255:
+ id_length = 0; /* entirely useless */
break;
default:
- printf(" unknown circuit type");
- return(0);
+ break;
}
-
- holding_time = EXTRACT_16BITS(header->enc_holding_time);
-
- packet_len = EXTRACT_16BITS(header->enc_packet_len);
- if ((packet_len < ISIS_HEADER_SIZE) ||
- (packet_len > length)) {
- printf(" bogus packet length %d, real length %d", packet_len,
- length);
- return(0);
+
+ /* 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);
}
- if(pdu_type != PTP_IIH)
- priority = header->enc_priority & PRIORITY_MASK;
+ 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(gndo,optr,"\n\t",8)) /* provide the _o_riginal pointer */
+ return(0); /* for optionally debugging the common header */
+ }
- /*
- * Now print the fixed header.
- */
switch (pdu_type) {
- case L1_LAN_IIH:
- printf(" L1 lan iih, ");
- break;
- case L2_LAN_IIH:
- printf(" L2 lan iih, ");
- break;
- case PTP_IIH:
- printf(" PTP iih, ");
+
+ 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(gndo,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;
- }
- printf("circuit ");
- switch (header->circuit) {
- case 1:
- printf("l1 only, ");
+ 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(gndo,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 2:
- printf("l2 only, ");
+
+ 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));
+
+
+ osi_print_cksum((u_int8_t *)header_lsp->lsp_id,
+ EXTRACT_16BITS(header_lsp->checksum), 12, length-12);
+
+ /*
+ * 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, " : "");
+
+ 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(gndo,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 3:
- printf("l1-l2, ");
+
+ 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(gndo,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(gndo,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;
- }
- printf ("holding time %d ", holding_time);
- printf ("\n\t\t\t source %s, length %d",
- etheraddr_string(header->enc_source_id), packet_len);
- if((pdu_type==L1_LAN_IIH)||(pdu_type==L2_LAN_IIH))
- printf ("\n\t\t\t lan id %s(%d)", etheraddr_string(header->enc_lan_id),
- header->enc_lan_id[SYSTEM_ID_LEN]);
+ default:
+ if(!print_unknown_data(gndo,pptr,"\n\t ",length))
+ return(0);
+ return (0);
+ }
/*
* Now print the TLV's.
*/
- if(pdu_type==PTP_IIH) {
- packet_len -= ISIS_PTP_HEADER_SIZE;
- pptr = (char *)p + ISIS_PTP_HEADER_SIZE;
- } else {
- packet_len -= ISIS_HEADER_SIZE;
- pptr = (char *)p + ISIS_HEADER_SIZE;
- }
+
while (packet_len >= 2) {
- if (pptr >= snapend) {
- printf("\n\t\t\t packet exceeded snapshot");
- return(1);
+ if (pptr == snapend) {
+ return (1);
+ }
+
+ if (!TTEST2(*pptr, 2)) {
+ printf("\n\t\t packet exceeded snapshot (%ld) bytes",
+ (long)(pptr-snapend));
+ return (1);
}
- type = *pptr++;
- len = *pptr++;
+ tlv_type = *pptr++;
+ tlv_len = *pptr++;
+ tmp =tlv_len; /* copy temporary len & pointer to packet data */
+ tptr = pptr;
packet_len -= 2;
- if (len > packet_len) {
+ if (tlv_len > packet_len) {
break;
}
- switch (type) {
- case TLV_AREA_ADDR:
- printf("\n\t\t\t area addresses");
- tmp = len;
- tptr = pptr;
+ /* 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\t\t ");
- print_nsap(tptr, alen);
- printf(" (%d)", alen);
+ 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 TLV_ISNEIGH:
- printf("\n\t\t\t neighbor addresses");
- tmp = len;
- tptr = pptr;
+ case ISIS_TLV_ISNEIGH:
while (tmp >= ETHER_ADDR_LEN) {
- printf("\n\t\t\t %s", etheraddr_string(tptr));
- tmp -= ETHER_ADDR_LEN;
- tptr += 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:
+ 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 ? */
+ 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 ", AF_INET);
+ 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 ", AF_INET);
+ 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 ", AF_INET6);
+ 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 ", AF_INET6);
+ 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) ");
+
+#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_GENERIC:
+ key_id = EXTRACT_16BITS((tptr+1));
+ printf("%u, password: ", key_id);
+ for(i=1 + sizeof(u_int16_t);i<tlv_len;i++) {
+ if (!TTEST2(*(tptr+i), 1))
+ goto trunctlv;
+ printf("%02x",*(tptr+i));
+ }
+ break;
+ case ISIS_SUBTLV_AUTH_PRIVATE:
+ default:
+ if(!print_unknown_data(gndo,tptr+1,"\n\t\t ",tlv_len-1))
+ return(0);
+ break;
}
break;
- case TLV_PADDING:
- printf("\n\t\t\t padding for %d bytes", len);
+
+ 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 TLV_AUTHENT:
- printf("\n\t\t\t authentication data");
- default_print(pptr, len);
+
+ 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 TLV_PTP_ADJ:
- printf("\n\t\t\t PTP adjacency status %s",
- isis_ptp_adjancey_values[*pptr].name);
+
+ case ISIS_TLV_MT_PORT_CAP:
+ {
+ if (!TTEST2(*(tptr), 2))
+ goto trunctlv;
+
+ printf("\n\t RES: %d, MTID(s): %d",
+ (EXTRACT_16BITS (tptr) >> 12),
+ (EXTRACT_16BITS (tptr) & 0x0fff));
+
+ tmp = tmp-2;
+ tptr = tptr+2;
+
+ if (tmp)
+ isis_print_mt_port_cap_subtlv (tptr, tmp);
+
+ break;
+ }
+
+ case ISIS_TLV_MT_CAPABILITY:
+
+ if (!TTEST2(*(tptr), 2))
+ goto trunctlv;
+
+ printf("\n\t O: %d, RES: %d, MTID(s): %d",
+ (EXTRACT_16BITS(tptr) >> 15) & 0x01,
+ (EXTRACT_16BITS(tptr) >> 12) & 0x07,
+ EXTRACT_16BITS(tptr) & 0x0fff);
+
+ tmp = tmp-2;
+ tptr = tptr+2;
+
+ if (tmp)
+ isis_print_mt_capability_subtlv (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 TLV_PROTOCOLS:
- printf("\n\t\t\t Supports protocols %s", (len>1)? "are":"is");
- for(i=0;i<len;i++)
- printf(" %02X", (u_char)*(pptr+i));
+
+ 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 TLV_IPADDR:
- printf("\n\t\t\t IP address: %s", ipaddr_string(pptr));
+
+ 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
+ */
+ osi_print_cksum(optr, EXTRACT_16BITS(tptr), tptr-optr, length);
+ 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(gndo,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(gndo,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:
- printf("\n\t\t\t unknown TLV, type %d, length %d", type, len);
+ if (vflag <= 1) {
+ if(!print_unknown_data(gndo,pptr,"\n\t\t",tlv_len))
+ return(0);
+ }
break;
}
-
- pptr += len;
- packet_len -= len;
+ /* do we want to see an additionally hexdump ? */
+ if (vflag> 1) {
+ if(!print_unknown_data(gndo,pptr,"\n\t ",tlv_len))
+ return(0);
+ }
+
+ pptr += tlv_len;
+ packet_len -= tlv_len;
}
if (packet_len != 0) {
- printf("\n\t\t\t %d straggler bytes", packet_len);
+ 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(register const u_char *p, register int len, u_char *off)
+static void
+osi_print_cksum (const u_int8_t *pptr, u_int16_t checksum,
+ u_int checksum_offset, u_int length)
{
- int32_t c0 = 0, c1 = 0;
-
- if ((off[0] == 0) && (off[1] == 0))
- return 0;
-
- off[0] = off[1] = 0;
- while ((int)--len >= 0) {
- c0 += *p++;
- c0 %= 255;
- c1 += c0;
- c1 %= 255;
- }
- return (c0 | c1);
+ u_int16_t calculated_checksum;
+
+ /* 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:
+ */
projects / tcpdump / blobdiff