forked from osmocom/wireshark
1528 lines
74 KiB
C
1528 lines
74 KiB
C
/* packet-cdp.c
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* Routines for the disassembly of the "Cisco Discovery Protocol"
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* (c) Copyright Hannes R. Boehm <hannes@boehm.org>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include <epan/to_str.h>
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#include <epan/in_cksum.h>
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#include <epan/nlpid.h>
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#include <epan/etypes.h>
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#include <epan/cisco_pid.h>
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/*
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* See
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*
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* http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/cdp/configuration/15-mt/cdp-15-mt-book/nm-cdp-discover.html#GUID-84FBA50B-677C-4D90-AF56-2FB96F2DC085
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*
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* and
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*
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* http://www.cisco.com/c/en/us/support/docs/switches/catalyst-4500-series-switches/13414-103.html#cdp
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*
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* for some more information on CDP version 2 (a superset of version 1).
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*
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* Also see
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*
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* http://www.rhyshaden.com/cdp.htm
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*/
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void proto_register_cdp(void);
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void proto_reg_handoff_cdp(void);
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static dissector_handle_t cdp_handle;
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/* Offsets in TLV structure. */
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#define TLV_TYPE 0
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#define TLV_LENGTH 2
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static int proto_cdp = -1;
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static int hf_cdp_version = -1;
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static int hf_cdp_checksum = -1;
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static int hf_cdp_checksum_status = -1;
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static int hf_cdp_ttl = -1;
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static int hf_cdp_tlvtype = -1;
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static int hf_cdp_tlvlength = -1;
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static int hf_cdp_nrgyz_tlvtype = -1;
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static int hf_cdp_nrgyz_tlvlength = -1;
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static int hf_cdp_deviceid = -1;
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static int hf_cdp_platform = -1;
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static int hf_cdp_portid = -1;
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static int hf_cdp_capabilities = -1;
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static int hf_cdp_capabilities_router = -1;
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static int hf_cdp_capabilities_trans_bridge = -1;
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static int hf_cdp_capabilities_src_bridge = -1;
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static int hf_cdp_capabilities_switch = -1;
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static int hf_cdp_capabilities_host = -1;
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static int hf_cdp_capabilities_igmp_capable = -1;
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static int hf_cdp_capabilities_repeater = -1;
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static int hf_cdp_capabilities_voip_phone = -1;
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static int hf_cdp_capabilities_remote = -1;
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static int hf_cdp_capabilities_cvta = -1;
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static int hf_cdp_capabilities_mac_relay = -1;
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static int hf_cdp_spare_poe_tlv = -1;
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static int hf_cdp_spare_poe_tlv_poe = -1;
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static int hf_cdp_spare_poe_tlv_spare_pair_arch = -1;
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static int hf_cdp_spare_poe_tlv_req_spare_pair_poe = -1;
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static int hf_cdp_spare_poe_tlv_pse_spare_pair_poe = -1;
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/* Generated from convert_proto_tree_add_text.pl */
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static int hf_cdp_num_tlvs_table = -1;
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static int hf_cdp_encrypted_data = -1;
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static int hf_cdp_cluster_ip = -1;
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static int hf_cdp_nrgyz_reply_to_backup_server_ip = -1;
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static int hf_cdp_nrgyz_reply_to_port = -1;
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static int hf_cdp_unknown_pad = -1;
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static int hf_cdp_cluster_version = -1;
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static int hf_cdp_hello_unknown = -1;
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static int hf_cdp_management_id = -1;
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static int hf_cdp_data = -1;
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static int hf_cdp_nrgyz_reply_to_ip_address = -1;
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static int hf_cdp_nrgyz_reply_to_name = -1;
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static int hf_cdp_nrgyz_reply_to_domain = -1;
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static int hf_cdp_nrgyz_reply_to_role = -1;
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static int hf_cdp_nrgyz_ip_address = -1;
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static int hf_cdp_nrgyz_ip6_address = -1;
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static int hf_cdp_model_number = -1;
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static int hf_cdp_nrgyz_reply_to_unknown_field = -1;
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static int hf_cdp_len_tlv_table = -1;
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static int hf_cdp_vtp_management_domain = -1;
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static int hf_cdp_hardware_version_id = -1;
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static int hf_cdp_cluster_unknown = -1;
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static int hf_cdp_native_vlan = -1;
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static int hf_cdp_ip_prefix = -1;
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static int hf_cdp_odr_default_gateway = -1;
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static int hf_cdp_power_consumption = -1;
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static int hf_cdp_cluster_status = -1;
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static int hf_cdp_power_requested = -1;
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static int hf_cdp_trust_bitmap = -1;
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static int hf_cdp_seen_sequence = -1;
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static int hf_cdp_system_name = -1;
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static int hf_cdp_power_available = -1;
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static int hf_cdp_cluster_commander_mac = -1;
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static int hf_cdp_mtu = -1;
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static int hf_cdp_protocol_length = -1;
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static int hf_cdp_system_serial_number = -1;
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static int hf_cdp_sequence_number = -1;
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static int hf_cdp_duplex = -1;
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static int hf_cdp_voice_vlan = -1;
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static int hf_cdp_request_id = -1;
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static int hf_cdp_cluster_sub_version = -1;
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static int hf_cdp_oui = -1;
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static int hf_cdp_nrgyz_reply_to_backup_server_port = -1;
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static int hf_cdp_cluster_master_ip = -1;
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static int hf_cdp_protocol = -1;
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static int hf_cdp_protocol_type = -1;
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static int hf_cdp_address = -1;
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static int hf_cdp_system_object_identifier = -1;
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static int hf_cdp_location_unknown = -1;
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static int hf_cdp_nrgyz_unknown_values = -1;
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static int hf_cdp_address_length = -1;
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static int hf_cdp_protocol_id = -1;
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static int hf_cdp_cluster_switch_mac = -1;
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static int hf_cdp_location = -1;
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static int hf_cdp_untrusted_port_cos = -1;
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static int hf_cdp_number_of_addresses = -1;
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static int hf_cdp_cluster_management_vlan = -1;
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static int hf_cdp_software_version = -1;
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static gint ett_cdp = -1;
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static gint ett_cdp_tlv = -1;
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static gint ett_cdp_nrgyz_tlv = -1;
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static gint ett_cdp_address = -1;
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static gint ett_cdp_capabilities = -1;
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static gint ett_cdp_spare_poe_tlv = -1;
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static gint ett_cdp_checksum = -1;
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static expert_field ei_cdp_invalid_data = EI_INIT;
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static expert_field ei_cdp_nrgyz_tlvlength = EI_INIT;
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static expert_field ei_cdp_checksum = EI_INIT;
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static int
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dissect_address_tlv(tvbuff_t *tvb, packet_info* pinfo, int offset, int length, proto_tree *tree);
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static void
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dissect_capabilities(tvbuff_t *tvb, int offset, int length, proto_tree *tree);
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static void
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dissect_nrgyz_tlv(tvbuff_t *tvb, packet_info* pinfo, int offset, guint16 length, guint16 num,
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proto_tree *tree);
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static void
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dissect_spare_poe_tlv(tvbuff_t *tvb, int offset, int length, proto_tree *tree);
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static void
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add_multi_line_string_to_tree(wmem_allocator_t *scope, proto_tree *tree, tvbuff_t *tvb, gint start,
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gint len, int hf);
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#define TYPE_DEVICE_ID 0x0001
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#define TYPE_ADDRESS 0x0002
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#define TYPE_PORT_ID 0x0003
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#define TYPE_CAPABILITIES 0x0004
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#define TYPE_IOS_VERSION 0x0005
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#define TYPE_PLATFORM 0x0006
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#define TYPE_IP_PREFIX 0x0007
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#define TYPE_PROTOCOL_HELLO 0x0008 /* Protocol Hello */
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#define TYPE_VTP_MGMT_DOMAIN 0x0009 /* VTP Domain, CTPv2 - see second URL */
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#define TYPE_NATIVE_VLAN 0x000a /* Native VLAN, CTPv2 - see second URL */
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#define TYPE_DUPLEX 0x000b /* Full/Half Duplex - see second URL */
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/* 0x000c */
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/* 0x000d */
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#define TYPE_VOIP_VLAN_REPLY 0x000e /* VoIP VLAN reply */
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#define TYPE_VOIP_VLAN_QUERY 0x000f /* VoIP VLAN query */
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#define TYPE_POWER 0x0010 /* Power consumption */
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#define TYPE_MTU 0x0011 /* MTU */
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#define TYPE_TRUST_BITMAP 0x0012 /* Trust bitmap */
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#define TYPE_UNTRUSTED_COS 0x0013 /* Untrusted port CoS */
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#define TYPE_SYSTEM_NAME 0x0014 /* System Name */
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#define TYPE_SYSTEM_OID 0x0015 /* System OID */
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#define TYPE_MANAGEMENT_ADDR 0x0016 /* Management Address(es) */
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#define TYPE_LOCATION 0x0017 /* Location */
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#define TYPE_EXT_PORT_ID 0x0018 /* External Port-ID */
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#define TYPE_POWER_REQUESTED 0x0019 /* Power Requested */
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#define TYPE_POWER_AVAILABLE 0x001a /* Power Available */
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#define TYPE_PORT_UNIDIR 0x001b /* Port Unidirectional */
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#define TYPE_NRGYZ 0x001d /* EnergyWise over CDP */
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#define TYPE_SPARE_POE 0x001f /* Spare Pair PoE */
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#define TYPE_HP_BSSID 0x1000 /* BSSID */
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#define TYPE_HP_SERIAL 0x1001 /* Serial number */
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#define TYPE_HP_SSID 0x1002 /* SSID */
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#define TYPE_HP_RADIO1_CH 0x1003 /* Radio1 channel */
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/* 0x1004 */
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/* 0x1005 */
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#define TYPE_HP_SNMP_PORT 0x1006 /* SNMP listening UDP port */
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#define TYPE_HP_MGMT_PORT 0x1007 /* Web interface TCP port */
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#define TYPE_HP_SOURCE_MAC 0x1008 /* Sender MAC address for the AP, bouth wired and wireless */
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#define TYPE_HP_RADIO2_CH 0x1009 /* Radio2 channel */
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#define TYPE_HP_RADIO1_OMODE 0x100A /* Radio1 Operating mode */
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#define TYPE_HP_RADIO2_OMODE 0x100B /* Radio2 Operating mode */
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#define TYPE_HP_RADIO1_RMODE 0x100C /* Radio1 Radio mode */
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#define TYPE_HP_RADIO2_RMODE 0x100D /* Radio2 Radio mode */
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static const value_string type_vals[] = {
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{ TYPE_DEVICE_ID, "Device ID" },
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{ TYPE_ADDRESS, "Addresses" },
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{ TYPE_PORT_ID, "Port ID" },
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{ TYPE_CAPABILITIES, "Capabilities" },
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{ TYPE_IOS_VERSION, "Software version" },
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{ TYPE_PLATFORM, "Platform" },
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{ TYPE_IP_PREFIX, "IP Prefix/Gateway (used for ODR)" },
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{ TYPE_PROTOCOL_HELLO, "Protocol Hello" },
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{ TYPE_VTP_MGMT_DOMAIN, "VTP Management Domain" },
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{ TYPE_NATIVE_VLAN, "Native VLAN" },
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{ TYPE_DUPLEX, "Duplex" },
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{ TYPE_VOIP_VLAN_REPLY, "VoIP VLAN Reply" },
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{ TYPE_VOIP_VLAN_QUERY, "VoIP VLAN Query" },
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{ TYPE_POWER, "Power consumption" },
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{ TYPE_MTU, "MTU"},
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{ TYPE_TRUST_BITMAP, "Trust Bitmap" },
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{ TYPE_UNTRUSTED_COS, "Untrusted Port CoS" },
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{ TYPE_SYSTEM_NAME, "System Name" },
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{ TYPE_SYSTEM_OID, "System Object ID" },
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{ TYPE_MANAGEMENT_ADDR, "Management Address" },
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{ TYPE_LOCATION, "Location" },
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{ TYPE_EXT_PORT_ID, "External Port-ID" },
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{ TYPE_POWER_REQUESTED, "Power Requested" },
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{ TYPE_POWER_AVAILABLE, "Power Available" },
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{ TYPE_PORT_UNIDIR, "Port Unidirectional" },
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{ TYPE_NRGYZ, "EnergyWise" },
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{ TYPE_SPARE_POE, "Spare PoE" },
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{ TYPE_HP_BSSID, "BSSID" },
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{ TYPE_HP_SERIAL, "Serial number" },
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{ TYPE_HP_SSID, "SSID" },
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{ TYPE_HP_RADIO1_CH, "Radio1 channel" },
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{ TYPE_HP_SNMP_PORT, "SNMP UDP port" },
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{ TYPE_HP_MGMT_PORT, "Web TCP port" },
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{ TYPE_HP_SOURCE_MAC, "Source MAC address" },
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{ TYPE_HP_RADIO2_CH, "Radio2 channel" },
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{ TYPE_HP_RADIO1_OMODE, "Radio1 Operating mode" },
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{ TYPE_HP_RADIO2_OMODE, "Radio2 Operating mode" },
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{ TYPE_HP_RADIO1_RMODE, "Radio1 Radio mode" },
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{ TYPE_HP_RADIO2_RMODE, "Radio2 Radio mode" },
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{ 0, NULL }
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};
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#define TYPE_HELLO_CLUSTER_MGMT 0x0112
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static const value_string type_hello_vals[] = {
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{ TYPE_HELLO_CLUSTER_MGMT, "Cluster Management" },
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{ 0, NULL }
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};
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#define TYPE_NRGYZ_ROLE 0x00000007
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#define TYPE_NRGYZ_DOMAIN 0x00000008
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#define TYPE_NRGYZ_NAME 0x00000009
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#define TYPE_NRGYZ_REPLYTO 0x00000017
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static const value_string type_nrgyz_vals[] = {
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{ TYPE_NRGYZ_ROLE, "Role" },
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{ TYPE_NRGYZ_DOMAIN, "Domain" },
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{ TYPE_NRGYZ_NAME, "Name" },
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{ TYPE_NRGYZ_REPLYTO, "Reply To" },
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{ 0, NULL }
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};
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static const unit_name_string units_mw = { "mW", NULL };
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static int
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dissect_cdp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_item *ti;
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proto_tree *cdp_tree;
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int offset = 0;
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guint16 type;
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guint16 length, data_length;
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proto_item *tlvi;
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proto_tree *tlv_tree;
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int real_length;
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guint32 naddresses;
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guint32 power_avail_len, power_avail;
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guint32 power_req_len, power_req;
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gboolean first;
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int addr_length;
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vec_t cksum_vec[1];
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "CDP");
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col_clear(pinfo->cinfo, COL_INFO);
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ti = proto_tree_add_item(tree, proto_cdp, tvb, offset, -1, ENC_NA);
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cdp_tree = proto_item_add_subtree(ti, ett_cdp);
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/* CDP header */
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proto_tree_add_item(cdp_tree, hf_cdp_version, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(cdp_tree, hf_cdp_ttl, tvb, offset, 1, ENC_NA);
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offset += 1;
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/* Checksum display & verification code */
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data_length = tvb_reported_length(tvb);
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/* CDP doesn't adhere to RFC 1071 section 2. (B). It incorrectly assumes
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* checksums are calculated on a big endian platform, therefore i.s.o.
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* padding odd sized data with a zero byte _at the end_ it sets the last
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* big endian _word_ to contain the last network _octet_. This byteswap
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* has to be done on the last octet of network data before feeding it to
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* the Internet checksum routine.
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* CDP checksumming code has a bug in the addition of this last _word_
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* as a signed number into the long word intermediate checksum. When
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* reducing this long to word size checksum an off-by-one error can be
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* made. This off-by-one error is compensated for in the last _word_ of
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* the network data.
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*/
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if (data_length & 1) {
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guint8 *padded_buffer;
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/* Allocate new buffer */
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padded_buffer = (guint8 *)wmem_alloc(pinfo->pool, data_length+1);
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tvb_memcpy(tvb, padded_buffer, 0, data_length);
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/* Swap bytes in last word */
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padded_buffer[data_length] = padded_buffer[data_length-1];
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padded_buffer[data_length-1] = 0;
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/* Compensate off-by-one error */
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if (padded_buffer[data_length] & 0x80) {
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padded_buffer[data_length]--;
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padded_buffer[data_length-1]--;
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}
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/* Setup checksum routine data buffer */
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SET_CKSUM_VEC_PTR(cksum_vec[0], padded_buffer, data_length+1);
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} else {
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/* Setup checksum routine data buffer */
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SET_CKSUM_VEC_TVB(cksum_vec[0], tvb, 0, data_length);
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}
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proto_tree_add_checksum(cdp_tree, tvb, offset, hf_cdp_checksum, hf_cdp_checksum_status, &ei_cdp_checksum, pinfo, in_cksum(cksum_vec, 1),
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ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY|PROTO_CHECKSUM_IN_CKSUM);
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offset += 2;
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while (tvb_reported_length_remaining(tvb, offset) != 0) {
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tlv_tree = NULL;
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type = tvb_get_ntohs(tvb, offset + TLV_TYPE);
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length = tvb_get_ntohs(tvb, offset + TLV_LENGTH);
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if (length < 4) {
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if (tree) {
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tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset, 4,
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ett_cdp_tlv, NULL, "TLV with invalid length %u (< 4)",
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length);
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proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
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}
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offset += 4;
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break;
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}
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switch (type) {
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case TYPE_DEVICE_ID:
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/* Device ID */
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col_append_fstr(pinfo->cinfo, COL_INFO,
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"Device ID: %s ",
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tvb_format_stringzpad(pinfo->pool, tvb, offset + 4, length - 4));
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if (tree) {
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tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
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length, ett_cdp_tlv, NULL, "Device ID: %s",
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tvb_format_stringzpad(pinfo->pool, tvb, offset + 4, length - 4));
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proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(tlv_tree, hf_cdp_deviceid, tvb, offset + 4, length - 4, ENC_ASCII);
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}
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offset += length;
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break;
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case TYPE_PORT_ID:
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real_length = length;
|
|
if ((tvb_reported_length_remaining(tvb, offset) >= length + 3) &&
|
|
(tvb_get_guint8(tvb, offset + real_length) != 0x00) &&
|
|
(tvb_get_guint8(tvb, offset + real_length) != 0x10)) {
|
|
/* The length in the TLV doesn't appear to be the
|
|
length of the TLV, as the byte just past it
|
|
isn't the first byte of a 2-byte big-endian
|
|
small integer; make the length of the TLV the length
|
|
in the TLV, plus 4 bytes for the TLV type and length,
|
|
minus 1 because that's what makes one capture work. */
|
|
real_length = length + 3;
|
|
}
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO,
|
|
"Port ID: %s ",
|
|
tvb_format_stringzpad(pinfo->pool, tvb, offset + 4,
|
|
length - 4));
|
|
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
|
|
real_length, ett_cdp_tlv, NULL, "Port ID: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, real_length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_portid, tvb, offset + 4, real_length - 4, ENC_ASCII);
|
|
}
|
|
offset += real_length;
|
|
break;
|
|
|
|
case TYPE_ADDRESS:
|
|
/* Addresses */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset,
|
|
length, ett_cdp_tlv, NULL, "Addresses");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += 4;
|
|
length -= 4;
|
|
naddresses = tvb_get_ntohl(tvb, offset);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_number_of_addresses, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
length -= 4;
|
|
while (naddresses != 0) {
|
|
addr_length = dissect_address_tlv(tvb, pinfo, offset, length,
|
|
tlv_tree);
|
|
if (addr_length < 0)
|
|
break;
|
|
offset += addr_length;
|
|
length -= addr_length;
|
|
|
|
naddresses--;
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_CAPABILITIES:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset,
|
|
length, ett_cdp_tlv, NULL, "Capabilities");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += 4;
|
|
length -= 4;
|
|
dissect_capabilities(tvb, offset, length, tlv_tree);
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_IOS_VERSION:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset,
|
|
length, ett_cdp_tlv, NULL, "Software Version");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
add_multi_line_string_to_tree(pinfo->pool, tlv_tree, tvb, offset + 4,
|
|
length - 4, hf_cdp_software_version);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_PLATFORM:
|
|
/* ??? platform */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Platform: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_IP_PREFIX:
|
|
if (length == 8) {
|
|
/* if length is 8 then this is default gw not prefix */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
|
|
length, ett_cdp_tlv, NULL, "ODR Default gateway: %s",
|
|
tvb_ip_to_str(pinfo->pool, tvb, offset+4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_odr_default_gateway, tvb, offset+4, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += 8;
|
|
} else {
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
|
|
length, ett_cdp_tlv, NULL, "IP Prefixes: %d",length/5);
|
|
|
|
/* the actual number of prefixes is (length-4)/5
|
|
but if the variable is not a "float" but "integer"
|
|
then length/5=(length-4)/5 :) */
|
|
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += 4;
|
|
length -= 4;
|
|
while (length > 0) {
|
|
proto_tree_add_ipv4_format_value(tlv_tree, hf_cdp_ip_prefix, tvb, offset, 5, tvb_get_ntohl(tvb, offset),
|
|
"%s/%u", tvb_ip_to_str(pinfo->pool, tvb, offset), tvb_get_guint8(tvb,offset+4));
|
|
offset += 5;
|
|
length -= 5;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case TYPE_PROTOCOL_HELLO:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset,length, ett_cdp_tlv, NULL, "Protocol Hello: %s",
|
|
val_to_str(tvb_get_ntohs(tvb, offset+7), type_hello_vals, "Unknown (0x%04x)"));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_oui, tvb, offset+4, 3, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_protocol_id, tvb, offset+7, 2, ENC_BIG_ENDIAN);
|
|
|
|
switch(tvb_get_ntohs(tvb, offset+7)) {
|
|
|
|
case TYPE_HELLO_CLUSTER_MGMT:
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_master_ip, tvb, offset+9, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_ip, tvb, offset+13, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_version, tvb, offset+17, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_sub_version, tvb, offset+18, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_status, tvb, offset+19, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_unknown, tvb, offset+20, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_commander_mac, tvb, offset+21, 6, ENC_NA);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_switch_mac, tvb, offset+27, 6, ENC_NA);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_unknown, tvb, offset+33, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_cluster_management_vlan, tvb, offset+34, 2, ENC_BIG_ENDIAN);
|
|
break;
|
|
default:
|
|
proto_tree_add_item(tlv_tree, hf_cdp_hello_unknown, tvb, offset + 9, length - 9, ENC_NA);
|
|
break;
|
|
}
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_VTP_MGMT_DOMAIN:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "VTP Management Domain: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_vtp_management_domain, tvb, offset + 4, length - 4, ENC_NA|ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_NATIVE_VLAN:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Native VLAN: %u",
|
|
tvb_get_ntohs(tvb, offset + 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_native_vlan, tvb, offset + 4, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_DUPLEX:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Duplex: %s",
|
|
tvb_get_guint8(tvb, offset + 4) ?
|
|
"Full" : "Half" );
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_duplex, tvb, offset + 4, 1, ENC_NA);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_VOIP_VLAN_REPLY:
|
|
tlvi = NULL;
|
|
if (tree) {
|
|
guint32 vlan_id;
|
|
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, &tlvi,
|
|
"VoIP VLAN Reply");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
if (length == 6) {
|
|
/*
|
|
* XXX - this doesn't appear to happen, so report it
|
|
* as an error.
|
|
*/
|
|
proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, 2, ENC_NA);
|
|
} else {
|
|
/*
|
|
* XXX - the first byte appears to be a 1-byte
|
|
* "appliance type" code.
|
|
*/
|
|
proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, 1, ENC_NA);
|
|
proto_tree_add_item_ret_uint(tlv_tree, hf_cdp_voice_vlan, tvb, offset + 5, 2, ENC_BIG_ENDIAN, &vlan_id);
|
|
proto_item_append_text(tlvi, ": VLAN %u", vlan_id);
|
|
}
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_VOIP_VLAN_QUERY:
|
|
tlvi = NULL;
|
|
if (tree) {
|
|
guint32 vlan_id;
|
|
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, &tlvi,
|
|
"VoIP VLAN Query");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
if (length == 6) {
|
|
/*
|
|
* This is some unknown value; it's typically 0x20 0x00,
|
|
* which, as a big-endian value, is not a VLAN ID, as
|
|
* VLAN IDs are 12 bits long.
|
|
*/
|
|
proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, 2, ENC_NA);
|
|
} else {
|
|
/*
|
|
* XXX - is this a 1-byte "appliance type" code?
|
|
*/
|
|
proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, 1, ENC_NA);
|
|
proto_tree_add_item_ret_uint(tlv_tree, hf_cdp_voice_vlan, tvb, offset + 5, 2, ENC_BIG_ENDIAN, &vlan_id);
|
|
proto_item_append_text(tlvi, ": VLAN %u", vlan_id);
|
|
}
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_POWER:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Power Consumption: %u mW",
|
|
tvb_get_ntohs(tvb, offset + 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_power_consumption, tvb, offset + 4, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_MTU:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "MTU: %u",
|
|
tvb_get_ntohl(tvb,offset + 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_mtu, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_TRUST_BITMAP:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Trust Bitmap: 0x%02X",
|
|
tvb_get_guint8(tvb, offset + 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_trust_bitmap, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_UNTRUSTED_COS:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Untrusted port CoS: 0x%02X",
|
|
tvb_get_guint8(tvb, offset + 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_untrusted_port_cos, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_SYSTEM_NAME:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "System Name: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_system_name, tvb, offset + 4, length - 4, ENC_NA|ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_SYSTEM_OID:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "System Object Identifier");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_system_object_identifier, tvb, offset + 4, length - 4, ENC_NA);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_MANAGEMENT_ADDR:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Management Addresses");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += 4;
|
|
length -= 4;
|
|
naddresses = tvb_get_ntohl(tvb, offset);
|
|
if (tree) {
|
|
proto_tree_add_item(tlv_tree, hf_cdp_number_of_addresses, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += 4;
|
|
length -= 4;
|
|
while (naddresses != 0) {
|
|
addr_length = dissect_address_tlv(tvb, pinfo, offset, length,
|
|
tlv_tree);
|
|
if (addr_length < 0)
|
|
break;
|
|
offset += addr_length;
|
|
length -= addr_length;
|
|
|
|
naddresses--;
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_LOCATION:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Location: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 5, length - 5));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_location_unknown, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_location, tvb, offset + 5, length - 5, ENC_NA|ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_POWER_REQUESTED:
|
|
tlvi = NULL;
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, &tlvi,
|
|
"Power Request");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_request_id, tvb, offset + 4, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_management_id, tvb, offset + 6, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
power_req_len = tvb_get_ntohs(tvb, offset + TLV_LENGTH);
|
|
if (power_req_len < 8) {
|
|
offset += power_req_len;
|
|
break;
|
|
}
|
|
power_req_len -= 8;
|
|
/* Move offset to where the list of Power Request Values Exist */
|
|
offset += 8;
|
|
first = TRUE;
|
|
while (power_req_len >= 4) {
|
|
proto_tree_add_item_ret_uint(tlv_tree, hf_cdp_power_requested, tvb, offset, 4, ENC_BIG_ENDIAN, &power_req);
|
|
if (first) {
|
|
proto_item_append_text(tlvi, ": %u mW", power_req);
|
|
first = FALSE;
|
|
} else
|
|
proto_item_append_text(tlvi, ", %u mW", power_req);
|
|
power_req_len -= 4;
|
|
offset += 4;
|
|
}
|
|
offset += power_req_len;
|
|
break;
|
|
|
|
case TYPE_POWER_AVAILABLE:
|
|
tlvi = NULL;
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, &tlvi,
|
|
"Power Available");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_request_id, tvb, offset + 4, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_management_id, tvb, offset + 6, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
power_avail_len = tvb_get_ntohs(tvb, offset + TLV_LENGTH);
|
|
if (power_avail_len < 8) {
|
|
offset += power_avail_len;
|
|
break;
|
|
}
|
|
power_avail_len -= 8;
|
|
/* Move offset to where the list of Power Available Values Exist */
|
|
offset += 8;
|
|
first = TRUE;
|
|
while (power_avail_len >= 4) {
|
|
proto_tree_add_item_ret_uint(tlv_tree, hf_cdp_power_available, tvb, offset, 4, ENC_BIG_ENDIAN, &power_avail);
|
|
if (first) {
|
|
proto_item_append_text(tlvi, ": %u mW", power_avail);
|
|
first = FALSE;
|
|
} else
|
|
proto_item_append_text(tlvi, ", %u mW", power_avail);
|
|
power_avail_len -= 4;
|
|
offset += 4;
|
|
}
|
|
offset += power_avail_len;
|
|
break;
|
|
|
|
case TYPE_NRGYZ:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "EnergyWise");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_encrypted_data, tvb, offset + 4, 20, ENC_NA);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_seen_sequence, tvb, offset + 24, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_sequence_number, tvb, offset + 28, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_model_number, tvb, offset + 32, 16, ENC_NA|ENC_ASCII);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_unknown_pad, tvb, offset + 48, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_hardware_version_id, tvb, offset + 50, 3, ENC_NA|ENC_ASCII);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_system_serial_number, tvb, offset + 53, 11, ENC_NA|ENC_ASCII);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_nrgyz_unknown_values, tvb, offset + 64, 8, ENC_NA);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_len_tlv_table, tvb, offset + 72, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_num_tlvs_table, tvb, offset + 74, 2, ENC_BIG_ENDIAN);
|
|
|
|
dissect_nrgyz_tlv(tvb, pinfo, offset + 76,
|
|
tvb_get_ntohs(tvb, offset + 72),
|
|
tvb_get_ntohs(tvb, offset + 74),
|
|
tlv_tree);
|
|
|
|
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_SPARE_POE:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset, length,
|
|
ett_cdp_tlv, NULL, "Spare Pair PoE");
|
|
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
offset += 4;
|
|
length -= 4;
|
|
dissect_spare_poe_tlv(tvb, offset, length, tlv_tree);
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_BSSID:
|
|
/* BSSID */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "BSSID: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_SERIAL:
|
|
/* Serial number */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Serial: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_SSID:
|
|
/* SSID */
|
|
if (tree) {
|
|
if (length == 4) {
|
|
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "SSID: [Empty]");
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
} else {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "SSID: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_RADIO1_CH:
|
|
/* Radio1 channel */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Radio 1 channel: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_SNMP_PORT:
|
|
/* SNMP listening UDP port */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "SNMP port: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_MGMT_PORT:
|
|
/* Web interface TCP port */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Web mgmt port: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_SOURCE_MAC:
|
|
/* Sender MAC address for the AP, bouth wired and wireless */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Source MAC: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_RADIO2_CH:
|
|
/* Radio2 channel */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Radio 2 channel: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_RADIO1_OMODE:
|
|
/* Radio1 Operating mode */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Radio 1 operating mode: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_RADIO2_OMODE:
|
|
/* Radio2 Operating mode */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Radio 2 operating mode: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_RADIO1_RMODE:
|
|
/* Radio1 Radio mode */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Radio 1 radio mode: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
case TYPE_HP_RADIO2_RMODE:
|
|
/* Radio2 Radio mode */
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
|
|
offset, length, ett_cdp_tlv, NULL, "Radio 2 radio mode: %s",
|
|
tvb_format_text(pinfo->pool, tvb, offset + 4, length - 4));
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII);
|
|
}
|
|
offset += length;
|
|
break;
|
|
|
|
default:
|
|
if (tree) {
|
|
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
|
|
length, ett_cdp_tlv, NULL, "Type: %s, length: %u",
|
|
val_to_str(type, type_vals, "Unknown (0x%04x)"),
|
|
length);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
|
|
if (length > 4) {
|
|
proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, length - 4, ENC_NA);
|
|
} else {
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
}
|
|
offset += length;
|
|
}
|
|
}
|
|
call_data_dissector(tvb_new_subset_remaining(tvb, offset), pinfo, cdp_tree);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
#define PROTO_TYPE_NLPID 1
|
|
#define PROTO_TYPE_IEEE_802_2 2
|
|
|
|
static const value_string proto_type_vals[] = {
|
|
{ PROTO_TYPE_NLPID, "NLPID" },
|
|
{ PROTO_TYPE_IEEE_802_2, "802.2" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static int
|
|
dissect_address_tlv(tvbuff_t *tvb, packet_info* pinfo, int offset, int length, proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *address_tree;
|
|
guint8 protocol_type;
|
|
guint8 protocol_length;
|
|
int nlpid = 0;
|
|
guint16 address_length;
|
|
guint16 etypeid = 0;
|
|
int hf_addr = -1;
|
|
|
|
if (length < 1)
|
|
return -1;
|
|
address_tree = proto_tree_add_subtree(tree, tvb, offset, length, ett_cdp_address, &ti, "Truncated address");
|
|
protocol_type = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(address_tree, hf_cdp_protocol_type, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset += 1;
|
|
length -= 1;
|
|
|
|
if (length < 1)
|
|
return -1;
|
|
protocol_length = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(address_tree, hf_cdp_protocol_length, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset += 1;
|
|
length -= 1;
|
|
|
|
if (length < protocol_length) {
|
|
if (length != 0) {
|
|
ti = proto_tree_add_item(address_tree, hf_cdp_protocol, tvb, offset, length, ENC_NA);
|
|
proto_item_append_text(ti, " (truncated)");
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
if ((protocol_type == PROTO_TYPE_NLPID) && (protocol_length == 1)) {
|
|
nlpid = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_bytes_format_value(address_tree, hf_cdp_protocol, tvb, offset, protocol_length, NULL, "%s",
|
|
val_to_str(nlpid, nlpid_vals, "Unknown (0x%02x)"));
|
|
} else if ((protocol_type == PROTO_TYPE_IEEE_802_2) && (protocol_length == 8) && (tvb_get_ntoh48(tvb, offset) == 0xAAAA03000000)) {
|
|
etypeid = tvb_get_ntohs(tvb, offset + 6);
|
|
proto_tree_add_bytes_format_value(address_tree, hf_cdp_protocol, tvb, offset, protocol_length, NULL, "%s",
|
|
val_to_str(etypeid, etype_vals, "Unknown (0x%04x)"));
|
|
} else {
|
|
nlpid = -1;
|
|
proto_tree_add_item(address_tree, hf_cdp_protocol, tvb, offset, protocol_length, ENC_NA);
|
|
}
|
|
offset += protocol_length;
|
|
length -= protocol_length;
|
|
|
|
if (length < 2)
|
|
return -1;
|
|
address_length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(address_tree, hf_cdp_address_length, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
length -= 2;
|
|
|
|
if (length < address_length) {
|
|
if (length != 0) {
|
|
ti = proto_tree_add_item(address_tree, hf_cdp_address, tvb, offset, length, ENC_NA);
|
|
proto_item_append_text(ti, " (truncated)");
|
|
}
|
|
return -1;
|
|
}
|
|
/* XXX - the Cisco document seems to be saying that, for 802.2-format
|
|
protocol types, 0xAAAA03 0x000000 0x0800 is IPv6, but 0x0800 is
|
|
the Ethernet protocol type for IPv4. */
|
|
if ((protocol_type == PROTO_TYPE_NLPID) && (protocol_length == 1)) {
|
|
switch (nlpid) {
|
|
|
|
/* XXX - dissect NLPID_ISO8473_CLNP as OSI CLNP address? */
|
|
|
|
case NLPID_IP:
|
|
if (address_length == 4) {
|
|
/* The address is an IP address. */
|
|
proto_item_set_text(ti, "IP address: %s", tvb_ip_to_str(pinfo->pool, tvb, offset));
|
|
hf_addr = hf_cdp_nrgyz_ip_address;
|
|
proto_tree_add_item(address_tree, hf_cdp_nrgyz_ip_address, tvb, offset, address_length, ENC_BIG_ENDIAN);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if ((protocol_type == PROTO_TYPE_IEEE_802_2) && (protocol_length == 8) && (etypeid > 0)) {
|
|
/*
|
|
* See also:
|
|
*
|
|
* http://www.rhyshaden.com/cdp.htm
|
|
*
|
|
* where other Ethertypes are mentioned.
|
|
*/
|
|
switch (etypeid) {
|
|
|
|
case ETHERTYPE_IPv6:
|
|
if (address_length == 16) {
|
|
/* The address is an IPv6 address. */
|
|
proto_item_set_text(ti, "IPv6 address: %s", tvb_ip6_to_str(pinfo->pool, tvb, offset));
|
|
hf_addr = hf_cdp_nrgyz_ip6_address;
|
|
proto_tree_add_item(address_tree, hf_cdp_nrgyz_ip6_address, tvb, offset, address_length, ENC_NA);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (hf_addr == -1)
|
|
{
|
|
proto_tree_add_item(address_tree, hf_cdp_address, tvb, offset, address_length, ENC_NA);
|
|
if(address_length)
|
|
{
|
|
proto_item_set_text(ti, "Address: %s", tvb_bytes_to_str(pinfo->pool, tvb, offset, address_length));
|
|
}
|
|
}
|
|
|
|
return 2 + protocol_length + 2 + address_length;
|
|
}
|
|
|
|
static void
|
|
dissect_capabilities(tvbuff_t *tvb, int offset, int length, proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *capabilities_tree;
|
|
|
|
if (length < 4)
|
|
return;
|
|
ti = proto_tree_add_item(tree, hf_cdp_capabilities, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
capabilities_tree = proto_item_add_subtree(ti, ett_cdp_capabilities);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_router, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_trans_bridge, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_src_bridge, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_switch, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_host, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_igmp_capable, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_repeater, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_voip_phone , tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_remote, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_cvta, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_mac_relay, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
static void
|
|
dissect_nrgyz_tlv(tvbuff_t *tvb, packet_info* pinfo, int offset, guint16 length, guint16 num,
|
|
proto_tree *tree)
|
|
{
|
|
guint32 tlvt, tlvl;
|
|
proto_tree *etree = NULL;
|
|
char const *ttext = NULL;
|
|
|
|
while (num-- && (length >= 8)) {
|
|
tlvt = tvb_get_ntohl(tvb, offset);
|
|
tlvl = tvb_get_ntohl(tvb, offset + 4);
|
|
|
|
if (length < tlvl)
|
|
break;
|
|
length -= tlvl;
|
|
|
|
if (tlvl < 8) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_cdp_nrgyz_tlvlength, tvb, offset, 8, "TLV with invalid length %u (< 8)", tlvl);
|
|
offset += 8;
|
|
break;
|
|
}
|
|
else {
|
|
ttext = val_to_str(tlvt, type_nrgyz_vals, "Unknown (0x%04x)");
|
|
switch (tlvt) {
|
|
case TYPE_NRGYZ_ROLE:
|
|
case TYPE_NRGYZ_DOMAIN:
|
|
case TYPE_NRGYZ_NAME:
|
|
etree = proto_tree_add_subtree_format(tree, tvb, offset,
|
|
tlvl, ett_cdp_nrgyz_tlv, NULL, "EnergyWise %s: %s", ttext,
|
|
tvb_format_stringzpad(pinfo->pool, tvb, offset + 8, tlvl - 8)
|
|
);
|
|
break;
|
|
case TYPE_NRGYZ_REPLYTO:
|
|
etree = proto_tree_add_subtree_format(tree, tvb, offset,
|
|
tlvl, ett_cdp_nrgyz_tlv, NULL, "EnergyWise %s: %s port %u",
|
|
ttext,
|
|
tvb_ip_to_str(pinfo->pool, tvb, offset + 12),
|
|
tvb_get_ntohs(tvb, offset + 10)
|
|
);
|
|
break;
|
|
default:
|
|
etree = proto_tree_add_subtree_format(tree, tvb, offset,
|
|
tlvl, ett_cdp_nrgyz_tlv, NULL, "EnergyWise %s TLV", ttext);
|
|
}
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_tlvtype, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_tlvlength, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
|
|
switch (tlvt) {
|
|
case TYPE_NRGYZ_ROLE:
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_role, tvb, offset + 8, tlvl - 8, ENC_NA|ENC_ASCII);
|
|
break;
|
|
case TYPE_NRGYZ_DOMAIN:
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_domain, tvb, offset + 8, tlvl - 8, ENC_NA|ENC_ASCII);
|
|
break;
|
|
case TYPE_NRGYZ_NAME:
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_name, tvb, offset + 8, tlvl - 8, ENC_NA|ENC_ASCII);
|
|
break;
|
|
case TYPE_NRGYZ_REPLYTO:
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_unknown_field, tvb, offset + 8, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_port, tvb, offset + 10, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_ip_address, tvb, offset + 12, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_backup_server_port, tvb, offset + 16, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_backup_server_ip, tvb, offset + 18, 4, ENC_BIG_ENDIAN);
|
|
break;
|
|
default:
|
|
if (tlvl > 8) {
|
|
proto_tree_add_item(etree, hf_cdp_data, tvb, offset + 8, tlvl - 8, ENC_NA);
|
|
}
|
|
}
|
|
offset += tlvl;
|
|
}
|
|
}
|
|
if (length) {
|
|
proto_tree_add_expert(tree, pinfo, &ei_cdp_invalid_data, tvb, offset, length);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_spare_poe_tlv(tvbuff_t *tvb, int offset, int length,
|
|
proto_tree *tree)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *tlv_tree;
|
|
|
|
if (length == 0) {
|
|
return;
|
|
}
|
|
|
|
ti = proto_tree_add_item(tree, hf_cdp_spare_poe_tlv, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
tlv_tree = proto_item_add_subtree(ti, ett_cdp_spare_poe_tlv);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_spare_poe_tlv_poe, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_spare_poe_tlv_spare_pair_arch, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_spare_poe_tlv_req_spare_pair_poe, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tlv_tree, hf_cdp_spare_poe_tlv_pse_spare_pair_poe, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
static void
|
|
add_multi_line_string_to_tree(wmem_allocator_t *scope, proto_tree *tree, tvbuff_t *tvb, gint start,
|
|
gint len, int hf)
|
|
{
|
|
gint next;
|
|
int line_len;
|
|
int data_len;
|
|
|
|
while (len > 0) {
|
|
line_len = tvb_find_line_end(tvb, start, len, &next, FALSE);
|
|
data_len = next - start;
|
|
proto_tree_add_string(tree, hf, tvb, start, data_len, tvb_format_stringzpad(scope, tvb, start, line_len));
|
|
start += data_len;
|
|
len -= data_len;
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_register_cdp(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_cdp_version,
|
|
{ "Version", "cdp.version", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_cdp_ttl,
|
|
{ "TTL", "cdp.ttl", FT_UINT8, BASE_DEC|BASE_UNIT_STRING, &units_second_seconds, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_cdp_checksum,
|
|
{ "Checksum", "cdp.checksum", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_cdp_checksum_status,
|
|
{ "Checksum Status", "cdp.checksum.status", FT_UINT8, BASE_NONE, VALS(proto_checksum_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_cdp_tlvtype,
|
|
{ "Type", "cdp.tlv.type", FT_UINT16, BASE_HEX, VALS(type_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_cdp_tlvlength,
|
|
{ "Length", "cdp.tlv.len", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_cdp_nrgyz_tlvtype,
|
|
{ "TLV Type", "cdp.nrgyz.tlv.type", FT_UINT32, BASE_HEX, VALS(type_nrgyz_vals), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_cdp_nrgyz_tlvlength,
|
|
{ "TLV Length", "cdp.nrgyz.tlv.len", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_cdp_deviceid,
|
|
{"Device ID", "cdp.deviceid", FT_STRING, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_platform,
|
|
{"Platform", "cdp.platform", FT_STRING, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_portid,
|
|
{"Sent through Interface", "cdp.portid", FT_STRING, BASE_NONE,
|
|
NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities,
|
|
{"Capabilities", "cdp.capabilities", FT_UINT32, BASE_HEX,
|
|
NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_router,
|
|
{"Router", "cdp.capabilities.router", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000001, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_trans_bridge,
|
|
{"Transparent Bridge", "cdp.capabilities.trans_bridge", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000002, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_src_bridge,
|
|
{"Source Route Bridge", "cdp.capabilities.src_bridge", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000004, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_switch,
|
|
{"Switch", "cdp.capabilities.switch", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000008, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_host,
|
|
{"Host", "cdp.capabilities.host", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000010, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_igmp_capable,
|
|
{"IGMP capable", "cdp.capabilities.igmp_capable", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000020, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_repeater,
|
|
{"Repeater", "cdp.capabilities.repeater", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000040, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_voip_phone,
|
|
{"VoIP Phone", "cdp.capabilities.voip_phone", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000080, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_remote,
|
|
{"Remotely Managed Device", "cdp.capabilities.remote", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000100, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_cvta,
|
|
{"CVTA/STP Dispute Resolution/Cisco VT Camera", "cdp.capabilities.cvta", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000200, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_capabilities_mac_relay,
|
|
{"Two Port Mac Relay", "cdp.capabilities.mac_relay", FT_BOOLEAN, 32,
|
|
TFS(&tfs_yes_no), 0x00000400, NULL, HFILL }},
|
|
|
|
{ &hf_cdp_spare_poe_tlv,
|
|
{ "Spare Pair PoE", "cdp.spare_poe_tlv", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0, NULL, HFILL }
|
|
},
|
|
|
|
{ &hf_cdp_spare_poe_tlv_poe,
|
|
{ "PSE Four-Wire PoE", "cdp.spare_poe_tlv.poe", FT_BOOLEAN, 8,
|
|
TFS(&tfs_supported_not_supported), 0x01, NULL, HFILL }
|
|
},
|
|
|
|
{ &hf_cdp_spare_poe_tlv_spare_pair_arch,
|
|
{ "PD Spare Pair Architecture", "cdp.spare_poe_tlv.spare_pair_arch", FT_BOOLEAN, 8,
|
|
TFS(&tfs_shared_independent), 0x02, NULL, HFILL }
|
|
},
|
|
|
|
{ &hf_cdp_spare_poe_tlv_req_spare_pair_poe,
|
|
{ "PD Request Spare Pair PoE", "cdp.spare_poe_tlv.req_spare_pair_poe", FT_BOOLEAN, 8,
|
|
TFS(&tfs_on_off), 0x04, NULL, HFILL }
|
|
},
|
|
|
|
{ &hf_cdp_spare_poe_tlv_pse_spare_pair_poe,
|
|
{ "PSE Spare Pair PoE", "cdp.spare_poe_tlv.pse_spare_pair_poe", FT_BOOLEAN, 8,
|
|
TFS(&tfs_on_off), 0x08, NULL, HFILL }
|
|
},
|
|
|
|
/* Generated from convert_proto_tree_add_text.pl */
|
|
{ &hf_cdp_number_of_addresses, { "Number of addresses", "cdp.number_of_addresses", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_odr_default_gateway, { "ODR Default gateway", "cdp.odr_default_gateway", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_ip_prefix, { "IP Prefix", "cdp.ip_prefix", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_oui, { "OUI", "cdp.oui", FT_UINT24, BASE_OUI, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_protocol_id, { "Protocol ID", "cdp.protocol_id", FT_UINT16, BASE_HEX, VALS(type_hello_vals), 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_cluster_master_ip, { "Cluster Master IP", "cdp.cluster.master_ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_cluster_ip, { "IP?", "cdp.cluster.ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_cluster_version, { "Version?", "cdp.cluster.version", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_cluster_sub_version, { "Sub Version?", "cdp.cluster.sub_version", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_cluster_status, { "Status?", "cdp.cluster.status", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_cluster_unknown, { "UNKNOWN", "cdp.cluster.unknown", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_cluster_commander_mac, { "Cluster Commander MAC", "cdp.cluster.commander_mac", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_cluster_switch_mac, { "Switch's MAC", "cdp.cluster.switch_mac", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_cluster_management_vlan, { "Management VLAN", "cdp.cluster.management_vlan", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_hello_unknown, { "Unknown", "cdp.hello.unknown", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_vtp_management_domain, { "VTP Management Domain", "cdp.vtp_management_domain", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_native_vlan, { "Native VLAN", "cdp.native_vlan", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_duplex, { "Duplex", "cdp.duplex", FT_BOOLEAN, BASE_NONE, TFS(&tfs_full_half), 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_data, { "Data", "cdp.data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_voice_vlan, { "Voice VLAN", "cdp.voice_vlan", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_power_consumption, { "Power Consumption", "cdp.power_consumption", FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_mw, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_mtu, { "MTU", "cdp.mtu", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_trust_bitmap, { "Trust Bitmap", "cdp.trust_bitmap", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_untrusted_port_cos, { "Untrusted port CoS", "cdp.untrusted_port_cos", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_system_name, { "System Name", "cdp.system_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_system_object_identifier, { "System Object Identifier", "cdp.system_object_identifier", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_location_unknown, { "UNKNOWN", "cdp.location.unknown", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_location, { "Location", "cdp.location", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_request_id, { "Request-ID", "cdp.request_id", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_management_id, { "Management-ID", "cdp.management_id", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_power_requested, { "Power Requested", "cdp.power_requested", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_mw, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_power_available, { "Power Available", "cdp.power_available", FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_mw, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_encrypted_data, { "Encrypted Data", "cdp.encrypted_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_seen_sequence, { "Seen Sequence?", "cdp.seen_sequence", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_sequence_number, { "Sequence Number", "cdp.sequence_number", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_model_number, { "Model Number", "cdp.model_number", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_unknown_pad, { "Unknown Pad", "cdp.unknown_pad", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_hardware_version_id, { "Hardware Version ID", "cdp.hardware_version_id", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_system_serial_number, { "System Serial Number", "cdp.system_serial_number", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_unknown_values, { "Unknown Values", "cdp.nrgyz_unknown_values", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_len_tlv_table, { "Length of TLV table", "cdp.len_tlv_table", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_num_tlvs_table, { "Number of TLVs in table", "cdp.num_tlvs_table", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_protocol, { "Protocol", "cdp.protocol", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_protocol_type, { "Protocol type", "cdp.protocol_type", FT_UINT8, BASE_HEX, VALS(proto_type_vals), 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_protocol_length, { "Protocol length", "cdp.protocol_length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_address, { "Address", "cdp.address", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_address_length, { "Address length", "cdp.address_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_reply_to_unknown_field, { "Unknown Field", "cdp.nrgyz_reply_to.unknown_field", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_reply_to_port, { "Port", "cdp.nrgyz_reply_to.port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_ip_address, { "IP Address", "cdp.nrgyz.ip_address", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_ip6_address, { "IPv6 Address", "cdp.nrgyz.ipv6_address", FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_reply_to_ip_address, { "IP Address", "cdp.nrgyz_reply_to.ip_address", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_reply_to_backup_server_port, { "Backup server Port?", "cdp.nrgyz_reply_to.backup_server_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_reply_to_backup_server_ip, { "Backup Server IP?", "cdp.nrgyz_reply_to.backup_server_ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_reply_to_name, { "Name", "cdp.nrgyz_reply_to.name", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_reply_to_domain, { "Domain", "cdp.nrgyz_reply_to.domain", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_nrgyz_reply_to_role, { "Role", "cdp.nrgyz_reply_to.role", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_cdp_software_version, { "Software version", "cdp.software_version", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_cdp,
|
|
&ett_cdp_tlv,
|
|
&ett_cdp_nrgyz_tlv,
|
|
&ett_cdp_address,
|
|
&ett_cdp_capabilities,
|
|
&ett_cdp_checksum,
|
|
&ett_cdp_spare_poe_tlv
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_cdp_invalid_data, { "cdp.invalid_data", PI_MALFORMED, PI_ERROR, "Invalid bytes at end", EXPFILL }},
|
|
{ &ei_cdp_nrgyz_tlvlength, { "cdp.nrgyz_tlv.length.invalid", PI_MALFORMED, PI_ERROR, "TLV with invalid length", EXPFILL }},
|
|
{ &ei_cdp_checksum, { "cdp.bad_checksum", PI_CHECKSUM, PI_ERROR, "Bad checksum", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_cdp;
|
|
|
|
proto_cdp = proto_register_protocol("Cisco Discovery Protocol", "CDP", "cdp");
|
|
cdp_handle = register_dissector("cdp", dissect_cdp, proto_cdp);
|
|
|
|
proto_register_field_array(proto_cdp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_cdp = expert_register_protocol(proto_cdp);
|
|
expert_register_field_array(expert_cdp, ei, array_length(ei));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_cdp(void)
|
|
{
|
|
dissector_add_uint("llc.cisco_pid", CISCO_PID_CDP, cdp_handle);
|
|
dissector_add_uint("chdlc.protocol", 0x2000, cdp_handle);
|
|
dissector_add_uint("ppp.protocol", 0x0207, cdp_handle);
|
|
dissector_add_uint("gre.proto", 0x2000, cdp_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|