/* packet-cdp.c * Routines for the disassembly of the "Cisco Discovery Protocol" * (c) Copyright Hannes R. Boehm * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include "config.h" #include #include #include #include #include #include /* * See * * 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 * * and * * http://www.cisco.com/c/en/us/support/docs/switches/catalyst-4500-series-switches/13414-103.html#cdp * * for some more information on CDP version 2 (a superset of version 1). */ void proto_register_cdp(void); void proto_reg_handoff_cdp(void); /* Offsets in TLV structure. */ #define TLV_TYPE 0 #define TLV_LENGTH 2 static int proto_cdp = -1; static int hf_cdp_version = -1; static int hf_cdp_checksum = -1; static int hf_cdp_checksum_good = -1; static int hf_cdp_checksum_bad = -1; static int hf_cdp_ttl = -1; static int hf_cdp_tlvtype = -1; static int hf_cdp_tlvlength = -1; static int hf_cdp_nrgyz_tlvtype = -1; static int hf_cdp_nrgyz_tlvlength = -1; static int hf_cdp_deviceid = -1; static int hf_cdp_platform = -1; static int hf_cdp_portid = -1; static int hf_cdp_capabilities = -1; static int hf_cdp_capabilities_router = -1; static int hf_cdp_capabilities_trans_bridge = -1; static int hf_cdp_capabilities_src_bridge = -1; static int hf_cdp_capabilities_switch = -1; static int hf_cdp_capabilities_host = -1; static int hf_cdp_capabilities_igmp_capable = -1; static int hf_cdp_capabilities_repeater = -1; static int hf_cdp_spare_poe_tlv = -1; static int hf_cdp_spare_poe_tlv_poe = -1; static int hf_cdp_spare_poe_tlv_spare_pair_arch = -1; static int hf_cdp_spare_poe_tlv_req_spare_pair_poe = -1; static int hf_cdp_spare_poe_tlv_pse_spare_pair_poe = -1; /* Generated from convert_proto_tree_add_text.pl */ static int hf_cdp_num_tlvs_table = -1; static int hf_cdp_encrypted_data = -1; static int hf_cdp_cluster_ip = -1; static int hf_cdp_nrgyz_reply_to_backup_server_ip = -1; static int hf_cdp_nrgyz_reply_to_port = -1; static int hf_cdp_unknown_pad = -1; static int hf_cdp_cluster_version = -1; static int hf_cdp_hello_unknown = -1; static int hf_cdp_management_id = -1; static int hf_cdp_data = -1; static int hf_cdp_nrgyz_reply_to_ip_address = -1; static int hf_cdp_nrgyz_reply_to_name = -1; static int hf_cdp_nrgyz_reply_to_domain = -1; static int hf_cdp_nrgyz_reply_to_role = -1; static int hf_cdp_nrgyz_ip_address = -1; static int hf_cdp_model_number = -1; static int hf_cdp_nrgyz_reply_to_unknown_field = -1; static int hf_cdp_len_tlv_table = -1; static int hf_cdp_vtp_management_domain = -1; static int hf_cdp_hardware_version_id = -1; static int hf_cdp_cluster_unknown = -1; static int hf_cdp_native_vlan = -1; static int hf_cdp_ip_prefix = -1; static int hf_cdp_odr_default_gateway = -1; static int hf_cdp_power_consumption = -1; static int hf_cdp_cluster_status = -1; static int hf_cdp_power_requested = -1; static int hf_cdp_trust_bitmap = -1; static int hf_cdp_seen_sequence = -1; static int hf_cdp_system_name = -1; static int hf_cdp_power_available = -1; static int hf_cdp_cluster_commander_mac = -1; static int hf_cdp_mtu = -1; static int hf_cdp_protocol_length = -1; static int hf_cdp_system_serial_number = -1; static int hf_cdp_sequence_number = -1; static int hf_cdp_duplex = -1; static int hf_cdp_voice_vlan = -1; static int hf_cdp_request_id = -1; static int hf_cdp_cluster_sub_version = -1; static int hf_cdp_oui = -1; static int hf_cdp_nrgyz_reply_to_backup_server_port = -1; static int hf_cdp_cluster_master_ip = -1; static int hf_cdp_protocol = -1; static int hf_cdp_protocol_type = -1; static int hf_cdp_address = -1; static int hf_cdp_system_object_identifier = -1; static int hf_cdp_location_unknown = -1; static int hf_cdp_nrgyz_unknown_values = -1; static int hf_cdp_address_length = -1; static int hf_cdp_protocol_id = -1; static int hf_cdp_cluster_switch_mac = -1; static int hf_cdp_location = -1; static int hf_cdp_untrusted_port_cos = -1; static int hf_cdp_number_of_addresses = -1; static int hf_cdp_cluster_management_vlan = -1; static int hf_cdp_software_version = -1; static gint ett_cdp = -1; static gint ett_cdp_tlv = -1; static gint ett_cdp_nrgyz_tlv = -1; static gint ett_cdp_address = -1; static gint ett_cdp_capabilities = -1; static gint ett_cdp_spare_poe_tlv = -1; static gint ett_cdp_checksum = -1; static expert_field ei_cdp_invalid_data = EI_INIT; static expert_field ei_cdp_nrgyz_tlvlength = EI_INIT; static dissector_handle_t data_handle; static int dissect_address_tlv(tvbuff_t *tvb, int offset, int length, proto_tree *tree); static void dissect_capabilities(tvbuff_t *tvb, int offset, int length, proto_tree *tree); static void dissect_nrgyz_tlv(tvbuff_t *tvb, packet_info* pinfo, int offset, guint16 length, guint16 num, proto_tree *tree); static void dissect_spare_poe_tlv(tvbuff_t *tvb, int offset, int length, proto_tree *tree); static void add_multi_line_string_to_tree(proto_tree *tree, tvbuff_t *tvb, gint start, gint len, int hf); #define TYPE_DEVICE_ID 0x0001 #define TYPE_ADDRESS 0x0002 #define TYPE_PORT_ID 0x0003 #define TYPE_CAPABILITIES 0x0004 #define TYPE_IOS_VERSION 0x0005 #define TYPE_PLATFORM 0x0006 #define TYPE_IP_PREFIX 0x0007 #define TYPE_PROTOCOL_HELLO 0x0008 /* Protocol Hello */ #define TYPE_VTP_MGMT_DOMAIN 0x0009 /* VTP Domain, CTPv2 - see second URL */ #define TYPE_NATIVE_VLAN 0x000a /* Native VLAN, CTPv2 - see second URL */ #define TYPE_DUPLEX 0x000b /* Full/Half Duplex - see second URL */ /* 0x000c */ /* 0x000d */ #define TYPE_VOIP_VLAN_REPLY 0x000e /* VoIP VLAN reply */ #define TYPE_VOIP_VLAN_QUERY 0x000f /* VoIP VLAN query */ #define TYPE_POWER 0x0010 /* Power consumption */ #define TYPE_MTU 0x0011 /* MTU */ #define TYPE_TRUST_BITMAP 0x0012 /* Trust bitmap */ #define TYPE_UNTRUSTED_COS 0x0013 /* Untrusted port CoS */ #define TYPE_SYSTEM_NAME 0x0014 /* System Name */ #define TYPE_SYSTEM_OID 0x0015 /* System OID */ #define TYPE_MANAGEMENT_ADDR 0x0016 /* Management Address(es) */ #define TYPE_LOCATION 0x0017 /* Location */ #define TYPE_EXT_PORT_ID 0x0018 /* External Port-ID */ #define TYPE_POWER_REQUESTED 0x0019 /* Power Requested */ #define TYPE_POWER_AVAILABLE 0x001a /* Power Available */ #define TYPE_PORT_UNIDIR 0x001b /* Port Unidirectional */ #define TYPE_NRGYZ 0x001d /* EnergyWise over CDP */ #define TYPE_SPARE_POE 0x001f /* Spare Pair PoE */ #define TYPE_HP_BSSID 0x1000 /* BSSID */ #define TYPE_HP_SERIAL 0x1001 /* Serial number */ #define TYPE_HP_SSID 0x1002 /* SSID */ #define TYPE_HP_RADIO1_CH 0x1003 /* Radio1 channel */ /* 0x1004 */ /* 0x1005 */ #define TYPE_HP_SNMP_PORT 0x1006 /* SNMP listening UDP port */ #define TYPE_HP_MGMT_PORT 0x1007 /* Web interface TCP port */ #define TYPE_HP_SOURCE_MAC 0x1008 /* Sender MAC address for the AP, bouth wired and wireless */ #define TYPE_HP_RADIO2_CH 0x1009 /* Radio2 channel */ #define TYPE_HP_RADIO1_OMODE 0x100A /* Radio1 Operating mode */ #define TYPE_HP_RADIO2_OMODE 0x100B /* Radio2 Operating mode */ #define TYPE_HP_RADIO1_RMODE 0x100C /* Radio1 Radio mode */ #define TYPE_HP_RADIO2_RMODE 0x100D /* Radio2 Radio mode */ static const value_string type_vals[] = { { TYPE_DEVICE_ID, "Device ID" }, { TYPE_ADDRESS, "Addresses" }, { TYPE_PORT_ID, "Port ID" }, { TYPE_CAPABILITIES, "Capabilities" }, { TYPE_IOS_VERSION, "Software version" }, { TYPE_PLATFORM, "Platform" }, { TYPE_IP_PREFIX, "IP Prefix/Gateway (used for ODR)" }, { TYPE_PROTOCOL_HELLO, "Protocol Hello" }, { TYPE_VTP_MGMT_DOMAIN, "VTP Management Domain" }, { TYPE_NATIVE_VLAN, "Native VLAN" }, { TYPE_DUPLEX, "Duplex" }, { TYPE_VOIP_VLAN_REPLY, "VoIP VLAN Reply" }, { TYPE_VOIP_VLAN_QUERY, "VoIP VLAN Query" }, { TYPE_POWER, "Power consumption" }, { TYPE_MTU, "MTU"}, { TYPE_TRUST_BITMAP, "Trust Bitmap" }, { TYPE_UNTRUSTED_COS, "Untrusted Port CoS" }, { TYPE_SYSTEM_NAME, "System Name" }, { TYPE_SYSTEM_OID, "System Object ID" }, { TYPE_MANAGEMENT_ADDR, "Management Address" }, { TYPE_LOCATION, "Location" }, { TYPE_EXT_PORT_ID, "External Port-ID" }, { TYPE_POWER_REQUESTED, "Power Requested" }, { TYPE_POWER_AVAILABLE, "Power Available" }, { TYPE_PORT_UNIDIR, "Port Unidirectional" }, { TYPE_NRGYZ, "EnergyWise" }, { TYPE_SPARE_POE, "Spare PoE" }, { TYPE_HP_BSSID, "BSSID" }, { TYPE_HP_SERIAL, "Serial number" }, { TYPE_HP_SSID, "SSID" }, { TYPE_HP_RADIO1_CH, "Radio1 channel" }, { TYPE_HP_SNMP_PORT, "SNMP UDP port" }, { TYPE_HP_MGMT_PORT, "Web TCP port" }, { TYPE_HP_SOURCE_MAC, "Source MAC address" }, { TYPE_HP_RADIO2_CH, "Radio2 channel" }, { TYPE_HP_RADIO1_OMODE, "Radio1 Operating mode" }, { TYPE_HP_RADIO2_OMODE, "Radio2 Operating mode" }, { TYPE_HP_RADIO1_RMODE, "Radio1 Radio mode" }, { TYPE_HP_RADIO2_RMODE, "Radio2 Radio mode" }, { 0, NULL } }; #define TYPE_HELLO_CLUSTER_MGMT 0x0112 static const value_string type_hello_vals[] = { { TYPE_HELLO_CLUSTER_MGMT, "Cluster Management" }, { 0, NULL } }; #define TYPE_NRGYZ_ROLE 0x00000007 #define TYPE_NRGYZ_DOMAIN 0x00000008 #define TYPE_NRGYZ_NAME 0x00000009 #define TYPE_NRGYZ_REPLYTO 0x00000017 static const value_string type_nrgyz_vals[] = { { TYPE_NRGYZ_ROLE, "Role" }, { TYPE_NRGYZ_DOMAIN, "Domain" }, { TYPE_NRGYZ_NAME, "Name" }, { TYPE_NRGYZ_REPLYTO, "Reply To" }, { 0, NULL } }; static void dissect_cdp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_item *ti, *checksum_item; proto_tree *cdp_tree = NULL, *checksum_tree; int offset = 0; guint16 type; guint16 length, packet_checksum, computed_checksum, data_length; gboolean checksum_good, checksum_bad; proto_item *tlvi = NULL; proto_tree *tlv_tree = NULL; int real_length; guint32 naddresses; guint32 power_avail_len, power_avail; guint32 power_req_len, power_req; int addr_length; vec_t cksum_vec[1]; col_set_str(pinfo->cinfo, COL_PROTOCOL, "CDP"); col_clear(pinfo->cinfo, COL_INFO); if (tree) { ti = proto_tree_add_item(tree, proto_cdp, tvb, offset, -1, ENC_NA); cdp_tree = proto_item_add_subtree(ti, ett_cdp); /* CDP header */ proto_tree_add_item(cdp_tree, hf_cdp_version, tvb, offset, 1, ENC_BIG_ENDIAN); offset += 1; proto_tree_add_uint_format_value(cdp_tree, hf_cdp_ttl, tvb, offset, 1, tvb_get_guint8(tvb, offset), "%u seconds", tvb_get_guint8(tvb, offset)); offset += 1; } else { offset += 2; /* The version/ttl fields from above */ } /* Checksum display & verification code */ packet_checksum = tvb_get_ntohs(tvb, offset); data_length = tvb_reported_length(tvb); /* CDP doesn't adhere to RFC 1071 section 2. (B). It incorrectly assumes * checksums are calculated on a big endian platform, therefore i.s.o. * padding odd sized data with a zero byte _at the end_ it sets the last * big endian _word_ to contain the last network _octet_. This byteswap * has to be done on the last octet of network data before feeding it to * the Internet checksum routine. * CDP checksumming code has a bug in the addition of this last _word_ * as a signed number into the long word intermediate checksum. When * reducing this long to word size checksum an off-by-one error can be * made. This off-by-one error is compensated for in the last _word_ of * the network data. */ if (data_length & 1) { guint8 *padded_buffer; /* Allocate new buffer */ padded_buffer = (guint8 *)wmem_alloc(wmem_packet_scope(), data_length+1); tvb_memcpy(tvb, padded_buffer, 0, data_length); /* Swap bytes in last word */ padded_buffer[data_length] = padded_buffer[data_length-1]; padded_buffer[data_length-1] = 0; /* Compensate off-by-one error */ if (padded_buffer[data_length] & 0x80) { padded_buffer[data_length]--; padded_buffer[data_length-1]--; } /* Setup checksum routine data buffer */ SET_CKSUM_VEC_PTR(cksum_vec[0], padded_buffer, data_length+1); } else { /* Setup checksum routine data buffer */ SET_CKSUM_VEC_TVB(cksum_vec[0], tvb, 0, data_length); } computed_checksum = in_cksum(cksum_vec, 1); checksum_good = (computed_checksum == 0); checksum_bad = !checksum_good; if (checksum_good) { checksum_item = proto_tree_add_uint_format_value(cdp_tree, hf_cdp_checksum, tvb, offset, 2, packet_checksum, "0x%04x [correct]", packet_checksum); } else { checksum_item = proto_tree_add_uint_format_value(cdp_tree, hf_cdp_checksum, tvb, offset, 2, packet_checksum, "0x%04x [incorrect, should be 0x%04x]", packet_checksum, in_cksum_shouldbe(packet_checksum, computed_checksum)); } checksum_tree = proto_item_add_subtree(checksum_item, ett_cdp_checksum); checksum_item = proto_tree_add_boolean(checksum_tree, hf_cdp_checksum_good, tvb, offset, 2, checksum_good); PROTO_ITEM_SET_GENERATED(checksum_item); checksum_item = proto_tree_add_boolean(checksum_tree, hf_cdp_checksum_bad, tvb, offset, 2, checksum_bad); PROTO_ITEM_SET_GENERATED(checksum_item); offset += 2; while (tvb_reported_length_remaining(tvb, offset) != 0) { type = tvb_get_ntohs(tvb, offset + TLV_TYPE); length = tvb_get_ntohs(tvb, offset + TLV_LENGTH); if (length < 4) { if (tree) { tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset, 4, ett_cdp_tlv, NULL, "TLV with invalid length %u (< 4)", 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); } offset += 4; break; } switch (type) { case TYPE_DEVICE_ID: /* Device ID */ col_append_fstr(pinfo->cinfo, COL_INFO, "Device ID: %s ", tvb_format_stringzpad(tvb, offset + 4, length - 4)); if (tree) { tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset, length, ett_cdp_tlv, NULL, "Device ID: %s", tvb_format_stringzpad(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_deviceid, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA); } offset += length; break; case TYPE_PORT_ID: real_length = length; if (tvb_get_guint8(tvb, offset + real_length) != 0x00) { /* 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(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(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|ENC_NA); } 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, 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(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(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|ENC_NA); } 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(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(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(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: if (tree) { if (length >= 7) { tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset, length, ett_cdp_tlv, NULL, "VoIP VLAN Reply: %u", tvb_get_ntohs(tvb, offset + 5)); } else { /* * XXX - what are these? I've seen them in some captures; * they have a length of 6, and run up to the end of * the packet, so if we try to dissect it the same way * we dissect the 7-byte ones, we report a malformed * frame. */ tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset, length, ett_cdp_tlv, NULL, "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); proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, 1, ENC_NA); if (length >= 7) { proto_tree_add_item(tlv_tree, hf_cdp_voice_vlan, tvb, offset + 5, 2, ENC_BIG_ENDIAN); } } offset += length; break; case TYPE_VOIP_VLAN_QUERY: if (tree) { if (length >= 7) { tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset, length, ett_cdp_tlv, NULL, "VoIP VLAN Query: %u", tvb_get_ntohs(tvb, offset + 5)); } else { /* * XXX - what are these? I've seen them in some captures; * they have a length of 6, and run up to the end of * the packet, so if we try to dissect it the same way * we dissect the 7-byte ones, we report a malformed * frame. */ tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset, length, ett_cdp_tlv, NULL, "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); proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, 1, ENC_NA); if (length >= 7) { proto_tree_add_item(tlv_tree, hf_cdp_voice_vlan, tvb, offset + 5, 2, ENC_BIG_ENDIAN); } } 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_uint_format_value(tlv_tree, hf_cdp_power_consumption, tvb, offset + 4, 2, tvb_get_ntohs(tvb, offset + 4), "%u mW", tvb_get_ntohs(tvb, offset + 4)); } 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(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, 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(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: if (tree) { tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset, length, ett_cdp_tlv, NULL, "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)) - 8; /* Move offset to where the list of Power Request Values Exist */ offset += 8; while(power_req_len) { if (power_req_len > 4) { power_req = tvb_get_ntohl(tvb, offset); proto_tree_add_uint_format_value(tlv_tree, hf_cdp_power_requested, tvb, offset, 4, power_req, "%u mW", power_req); proto_item_append_text(tlvi, "%u mW, ", power_req); power_req_len -= 4; offset += 4; } else { if (power_req_len == 4) { power_req = tvb_get_ntohl(tvb, offset); proto_tree_add_uint_format_value(tlv_tree, hf_cdp_power_requested, tvb, offset, 4, power_req, "%u mW", power_req); proto_item_append_text(tlvi, "%u mW", power_req); } offset += power_req_len; break; } } break; case TYPE_POWER_AVAILABLE: if (tree) { tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset, length, ett_cdp_tlv, NULL, "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)) - 8; /* Move offset to where the list of Power Available Values Exist */ offset += 8; while(power_avail_len) { if (power_avail_len >= 4) { power_avail = tvb_get_ntohl(tvb, offset); proto_tree_add_uint_format_value(tlv_tree, hf_cdp_power_available, tvb, offset, 4, power_avail, "%u mW", power_avail); proto_item_append_text(tlvi, "%u mW, ", power_avail); power_avail_len -= 4; offset += 4; } else { offset += power_avail_len; break; } } 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(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|ENC_NA); } 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(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|ENC_NA); } 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(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|ENC_NA); } } 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(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|ENC_NA); } 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(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|ENC_NA); } 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(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|ENC_NA); } 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(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|ENC_NA); } 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(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|ENC_NA); } 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(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|ENC_NA); } 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(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|ENC_NA); } 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(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|ENC_NA); } 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(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|ENC_NA); } 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; } } offset += length; } } call_dissector(data_handle, tvb_new_subset_remaining(tvb, offset), pinfo, cdp_tree); } #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, int offset, int length, proto_tree *tree) { proto_item *ti; proto_tree *address_tree; guint8 protocol_type; guint8 protocol_length; int nlpid; guint16 address_length; 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 { 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(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 (hf_addr == -1) { proto_tree_add_item(address_tree, hf_cdp_address, tvb, offset, address_length, ENC_NA); proto_item_set_text(ti, "Address: %s", tvb_bytes_to_str(wmem_packet_scope(), 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); } 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(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(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(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(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_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_cdp_checksum, { "Checksum", "cdp.checksum", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_cdp_checksum_good, { "Good", "cdp.checksum_good", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "True: checksum matches packet content; False: doesn't match content or not checked", HFILL }}, { &hf_cdp_checksum_bad, { "Bad", "cdp.checksum_bad", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "True: checksum doesn't match packet content; False: matches content or not checked", 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_UINT16, 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), 0x01, NULL, HFILL }}, { &hf_cdp_capabilities_trans_bridge, {"Transparent Bridge", "cdp.capabilities.trans_bridge", FT_BOOLEAN, 32, TFS(&tfs_yes_no), 0x02, NULL, HFILL }}, { &hf_cdp_capabilities_src_bridge, {"Source Route Bridge", "cdp.capabilities.src_bridge", FT_BOOLEAN, 32, TFS(&tfs_yes_no), 0x04, NULL, HFILL }}, { &hf_cdp_capabilities_switch, {"Switch", "cdp.capabilities.switch", FT_BOOLEAN, 32, TFS(&tfs_yes_no), 0x08, NULL, HFILL }}, { &hf_cdp_capabilities_host, {"Host", "cdp.capabilities.host", FT_BOOLEAN, 32, TFS(&tfs_yes_no), 0x10, NULL, HFILL }}, { &hf_cdp_capabilities_igmp_capable, {"IGMP capable", "cdp.capabilities.igmp_capable", FT_BOOLEAN, 32, TFS(&tfs_yes_no), 0x20, NULL, HFILL }}, { &hf_cdp_capabilities_repeater, {"Repeater", "cdp.capabilities.repeater", FT_BOOLEAN, 32, TFS(&tfs_yes_no), 0x40, 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_HEX, VALS(oui_vals), 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, NULL, 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, NULL, 0x0, NULL, HFILL }}, { &hf_cdp_power_available, { "Power Available", "cdp.power_available", FT_UINT32, BASE_DEC, NULL, 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_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 }}, }; expert_module_t* expert_cdp; proto_cdp = proto_register_protocol("Cisco Discovery Protocol", "CDP", "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_handle_t cdp_handle; data_handle = find_dissector("data"); cdp_handle = create_dissector_handle(dissect_cdp, proto_cdp); dissector_add_uint("llc.cisco_pid", 0x2000, cdp_handle); dissector_add_uint("chdlc.protocol", 0x2000, cdp_handle); dissector_add_uint("ppp.protocol", 0x0207, cdp_handle); } /* * Editor modelines - http://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: */