diff options
author | Gilbert Ramirez <gram@alumni.rice.edu> | 2004-07-18 18:06:47 +0000 |
---|---|---|
committer | Gilbert Ramirez <gram@alumni.rice.edu> | 2004-07-18 18:06:47 +0000 |
commit | 669db206cb1f270046ad400fff7655e20c63e723 (patch) | |
tree | 4eff24a2e16c8963e497e1fc575f35e6af59bd26 /packet-cdp.c | |
parent | ae46c27a38700af669ef907491081f09df6f6b2c (diff) |
Move dissectors to epan/dissectors directory.
Also move ncp222.py, x11-fields, process-x11-fields.pl,
make-reg-dotc, and make-reg-dotc.py.
Adjust #include lines in files that include packet-*.h
files.
svn path=/trunk/; revision=11410
Diffstat (limited to 'packet-cdp.c')
-rw-r--r-- | packet-cdp.c | 832 |
1 files changed, 0 insertions, 832 deletions
diff --git a/packet-cdp.c b/packet-cdp.c deleted file mode 100644 index 1c3a100096..0000000000 --- a/packet-cdp.c +++ /dev/null @@ -1,832 +0,0 @@ -/* packet-cdp.c - * Routines for the disassembly of the "Cisco Discovery Protocol" - * (c) Copyright Hannes R. Boehm <hannes@boehm.org> - * - * $Id$ - * - * Ethereal - Network traffic analyzer - * By Gerald Combs <gerald@ethereal.com> - * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#include "config.h" - -#include <stdlib.h> -#include <string.h> - -#include <glib.h> -#include <epan/packet.h> -#include <epan/strutil.h> - -#include "oui.h" -#include "nlpid.h" - - -/* - * See - * - * http://www.cisco.com/univercd/cc/td/doc/product/lan/trsrb/frames.htm - * - * for some information on CDP. - * - * See - * - * http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a0080094713.shtml - * - * for some more information on CDP version 2. - */ - -/* 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_ttl = -1; -static int hf_cdp_tlvtype = -1; -static int hf_cdp_tlvlength = -1; - -static gint ett_cdp = -1; -static gint ett_cdp_tlv = -1; -static gint ett_cdp_address = -1; -static gint ett_cdp_capabilities = -1; - -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 -add_multi_line_string_to_tree(proto_tree *tree, tvbuff_t *tvb, gint start, - gint len, const gchar *prefix); - -#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 */ -/* Somewhere in here there's a Power Draw TLV */ -/* 0x000c */ -/* 0x000d */ -#define TYPE_VOIP_VLAN_REPLY 0x000e /* VoIP VLAN reply */ -#define TYPE_VOIP_VLAN_QUERY 0x000f /* VoIP VLAN query */ -#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 */ - - -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_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" }, - { 0, NULL }, -}; - -#define TYPE_HELLO_CLUSTER_MGMT 0x0112 - -static const value_string type_hello_vals[] = { - { TYPE_HELLO_CLUSTER_MGMT, "Cluster Management" }, - { 0, NULL }, -}; - -static void -dissect_cdp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) -{ - proto_item *ti; - proto_tree *cdp_tree = NULL; - int offset = 0; - guint16 type; - guint16 length; - proto_item *tlvi; - proto_tree *tlv_tree; - int real_length; - guint32 naddresses; - int addr_length; - guint32 ip_addr; - - if (check_col(pinfo->cinfo, COL_PROTOCOL)) - col_set_str(pinfo->cinfo, COL_PROTOCOL, "CDP"); - if (check_col(pinfo->cinfo, COL_INFO)) - col_set_str(pinfo->cinfo, COL_INFO, "Cisco Discovery Protocol"); - - if (tree){ - ti = proto_tree_add_item(tree, proto_cdp, tvb, offset, -1, FALSE); - cdp_tree = proto_item_add_subtree(ti, ett_cdp); - - /* CDP header */ - proto_tree_add_item(cdp_tree, hf_cdp_version, tvb, offset, 1, FALSE); - offset += 1; - proto_tree_add_uint_format(cdp_tree, hf_cdp_ttl, tvb, offset, 1, - tvb_get_guint8(tvb, offset), - "TTL: %u seconds", - tvb_get_guint8(tvb, offset)); - offset += 1; - proto_tree_add_item(cdp_tree, hf_cdp_checksum, tvb, offset, 2, FALSE); - 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) { - tlvi = proto_tree_add_text(cdp_tree, tvb, offset, 4, - "TLV with invalid length %u (< 4)", - length); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - offset += 4; - break; - } - - switch (type) { - - case TYPE_DEVICE_ID: - /* Device ID */ - tlvi = proto_tree_add_text(cdp_tree, tvb, offset, - length, "Device ID: %s", - tvb_format_stringzpad(tvb, offset + 4, length - 4)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "Device ID: %s", - tvb_format_stringzpad(tvb, offset + 4, length - 4)); - offset += length; - break; - - case TYPE_ADDRESS: - /* Addresses */ - tlvi = proto_tree_add_text(cdp_tree, tvb, offset, - length, "Addresses"); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - offset += 4; - length -= 4; - naddresses = tvb_get_ntohl(tvb, offset); - proto_tree_add_text(tlv_tree, tvb, offset, 4, - "Number of addresses: %u", naddresses); - 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_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; - } - tlvi = proto_tree_add_text(cdp_tree, tvb, offset, - real_length, "Port ID: %s", - tvb_format_text(tvb, offset + 4, real_length - 4)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - real_length - 4, - "Sent through Interface: %s", - tvb_format_text(tvb, offset + 4, real_length - 4)); - offset += real_length; - break; - - case TYPE_CAPABILITIES: - tlvi = proto_tree_add_text(cdp_tree, tvb, offset, - length, "Capabilities"); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - offset += 4; - length -= 4; - dissect_capabilities(tvb, offset, length, tlv_tree); - offset += length; - break; - - case TYPE_IOS_VERSION: - tlvi = proto_tree_add_text(cdp_tree, tvb, offset, - length, "Software Version"); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - add_multi_line_string_to_tree(tlv_tree, tvb, offset + 4, - length - 4, "Software Version: "); - offset += length; - break; - - case TYPE_PLATFORM: - /* ??? platform */ - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "Platform: %s", - tvb_format_text(tvb, offset + 4, length - 4)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "Platform: %s", - tvb_format_text(tvb, offset + 4, length - 4)); - offset += length; - break; - case TYPE_IP_PREFIX: - if (length == 8) { - /* if length is 8 then this is default gw not prefix */ - tlvi = proto_tree_add_text(cdp_tree, tvb, offset, - length, "ODR Default gateway: %s", - ip_to_str(tvb_get_ptr(tvb, offset+4, 4))); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset+4, 4, - "ODR Default gateway = %s", - ip_to_str(tvb_get_ptr(tvb, offset+4, 4))); - offset += 8; - } else { - tlvi = proto_tree_add_text(cdp_tree, tvb, offset, - length, "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 :) */ - - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - offset += 4; - length -= 4; - while (length > 0) { - proto_tree_add_text(tlv_tree, tvb, offset, 5, - "IP Prefix = %s/%u", - ip_to_str(tvb_get_ptr(tvb, offset, 4)), - tvb_get_guint8(tvb,offset+4)); - offset += 5; - length -= 5; - } - } - break; - case TYPE_PROTOCOL_HELLO: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset,length, "Protocol Hello: %s", - val_to_str(tvb_get_ntohs(tvb, offset+7), type_hello_vals, "Unknown (0x%04x)")); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset+4, 3, - "OUI: 0x%06X (%s)", - tvb_get_ntoh24(tvb,offset+4), - val_to_str(tvb_get_ntoh24(tvb,offset+4), oui_vals, "Unknown")); - proto_tree_add_text(tlv_tree, tvb, offset+7, 2, - "Protocol ID: 0x%04X (%s)", - tvb_get_ntohs(tvb, offset+7), - val_to_str(tvb_get_ntohs(tvb, offset+7), type_hello_vals, "Unknown")); - switch(tvb_get_ntohs(tvb, offset+7)) { - case TYPE_HELLO_CLUSTER_MGMT: - /* proto_tree_add_text(tlv_tree, tvb, offset+9, - length - 9, "Cluster Management"); - */ - tvb_memcpy(tvb, (guint8 *)&ip_addr, offset+9, 4); - proto_tree_add_text(tlv_tree, tvb, offset+9, 4, - "Cluster Master IP: %s",ip_to_str((guint8 *)&ip_addr)); - tvb_memcpy(tvb, (guint8 *)&ip_addr, offset+13, 4); - proto_tree_add_text(tlv_tree, tvb, offset+13, 4, - "UNKNOWN (IP?): 0x%08X (%s)", - ip_addr, ip_to_str((guint8 *)&ip_addr)); - proto_tree_add_text(tlv_tree, tvb, offset+17, 1, - "Version?: 0x%02X", - tvb_get_guint8(tvb, offset+17)); - proto_tree_add_text(tlv_tree, tvb, offset+18, 1, - "Sub Version?: 0x%02X", - tvb_get_guint8(tvb, offset+18)); - proto_tree_add_text(tlv_tree, tvb, offset+19, 1, - "Status?: 0x%02X", - tvb_get_guint8(tvb, offset+19)); - proto_tree_add_text(tlv_tree, tvb, offset+20, 1, - "UNKNOWN: 0x%02X", - tvb_get_guint8(tvb, offset+20)); - proto_tree_add_text(tlv_tree, tvb, offset+21, 6, - "Cluster Commander MAC: %s", - ether_to_str(tvb_get_ptr(tvb, offset+21, 6))); - proto_tree_add_text(tlv_tree, tvb, offset+27, 6, - "Switch's MAC: %s", - ether_to_str(tvb_get_ptr(tvb, offset+27, 6))); - proto_tree_add_text(tlv_tree, tvb, offset+33, 1, - "UNKNOWN: 0x%02X", - tvb_get_guint8(tvb, offset+33)); - proto_tree_add_text(tlv_tree, tvb, offset+34, 2, - "Management VLAN: %d", - tvb_get_ntohs(tvb, offset+34)); - break; - default: - proto_tree_add_text(tlv_tree, tvb, offset + 9, - length - 9, "Unknown"); - break; - } - offset += length; - break; - case TYPE_VTP_MGMT_DOMAIN: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "VTP Management Domain: %s", - tvb_format_text(tvb, offset + 4, length - 4)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "VTP Management Domain: %s", - tvb_format_text(tvb, offset + 4, length - 4)); - offset += length; - break; - case TYPE_NATIVE_VLAN: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "Native VLAN: %u", - tvb_get_ntohs(tvb, offset + 4)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "Native VLAN: %u", - tvb_get_ntohs(tvb, offset + 4)); - offset += length; - break; - case TYPE_DUPLEX: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "Duplex: %s", - tvb_get_guint8(tvb, offset + 4) ? - "Full" : "Half" ); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "Duplex: %s", - tvb_get_guint8(tvb, offset + 4) ? - "Full" : "Half" ); - offset += length; - break; - case TYPE_VOIP_VLAN_REPLY: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "VoIP VLAN Reply"); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "Data"); - offset += length; - break; - case TYPE_VOIP_VLAN_QUERY: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "VoIP VLAN Query"); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "Data"); - offset += length; - break; - case TYPE_MTU: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "MTU: %u", - tvb_get_ntohl(tvb,offset + 4)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "MTU: %u", - tvb_get_ntohl(tvb,offset + 4)); - offset += length; - break; - case TYPE_TRUST_BITMAP: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "Trust Bitmap: 0x%02X", - tvb_get_guint8(tvb, offset + 4)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "Trust Bitmap: %02x", - tvb_get_guint8(tvb, offset + 4)); - offset += length; - break; - case TYPE_UNTRUSTED_COS: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "Untrusted port CoS: 0x%02X", - tvb_get_guint8(tvb, offset + 4)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "Untrusted port CoS: %02x", - tvb_get_guint8(tvb, offset + 4)); - offset += length; - break; - case TYPE_SYSTEM_NAME: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "System Name: %s", - tvb_format_text(tvb, offset + 4, length - 4)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "System Name: %s", - tvb_format_text(tvb, offset + 4, length - 4)); - offset += length; - break; - case TYPE_SYSTEM_OID: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "System Object Identifier"); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "System Object Identifier: %s", - tvb_bytes_to_str(tvb, offset + 4, length - 4)); - offset += length; - break; - case TYPE_MANAGEMENT_ADDR: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "Management Addresses"); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - offset += 4; - length -= 4; - naddresses = tvb_get_ntohl(tvb, offset); - proto_tree_add_text(tlv_tree, tvb, offset, 4, - "Number of addresses: %u", naddresses); - 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: - tlvi = proto_tree_add_text(cdp_tree, tvb, - offset, length, "Location: %s", - tvb_format_text(tvb, offset + 5, length - 5)); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - proto_tree_add_text(tlv_tree, tvb, offset + 4, - 1 , "UNKNOWN: 0x%02X", - tvb_get_guint8(tvb, offset + 4)); - proto_tree_add_text(tlv_tree, tvb, offset + 5, - length - 5, "Location: %s", - tvb_format_text(tvb, offset + 5, length - 5)); - offset += length; - break; - default: - tlvi = proto_tree_add_text(cdp_tree, tvb, offset, - length, "Type: %s, length: %u", - val_to_str(type, type_vals, "Unknown (0x%04x)"), - length); - tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb, - offset + TLV_TYPE, 2, type); - proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb, - offset + TLV_LENGTH, 2, length); - if (length > 4) { - proto_tree_add_text(tlv_tree, tvb, offset + 4, - length - 4, "Data"); - } else - return; - offset += length; - } - } - call_dissector(data_handle, tvb_new_subset(tvb, offset, -1, -1), 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; - char *protocol_str; - guint16 address_length; - char *address_type_str; - char *address_str; - - if (length < 1) - return -1; - ti = proto_tree_add_text(tree, tvb, offset, length, "Truncated address"); - address_tree = proto_item_add_subtree(ti, ett_cdp_address); - protocol_type = tvb_get_guint8(tvb, offset); - proto_tree_add_text(address_tree, tvb, offset, 1, "Protocol type: %s", - val_to_str(protocol_type, proto_type_vals, "Unknown (0x%02x)")); - offset += 1; - length -= 1; - - if (length < 1) - return -1; - protocol_length = tvb_get_guint8(tvb, offset); - proto_tree_add_text(address_tree, tvb, offset, 1, "Protocol length: %u", - protocol_length); - offset += 1; - length -= 1; - - if (length < protocol_length) { - if (length != 0) { - proto_tree_add_text(address_tree, tvb, offset, length, - "Protocol: %s (truncated)", - tvb_bytes_to_str(tvb, offset, length)); - } - return -1; - } - protocol_str = NULL; - if (protocol_type == PROTO_TYPE_NLPID && protocol_length == 1) { - nlpid = tvb_get_guint8(tvb, offset); - protocol_str = val_to_str(nlpid, nlpid_vals, "Unknown (0x%02x)"); - } else - nlpid = -1; - if (protocol_str == NULL) - protocol_str = tvb_bytes_to_str(tvb, offset, protocol_length); - proto_tree_add_text(address_tree, tvb, offset, protocol_length, - "Protocol: %s", protocol_str); - offset += protocol_length; - length -= protocol_length; - - if (length < 2) - return -1; - address_length = tvb_get_ntohs(tvb, offset); - proto_tree_add_text(address_tree, tvb, offset, 2, "Address length: %u", - address_length); - offset += 2; - length -= 2; - - if (length < address_length) { - if (length != 0) { - proto_tree_add_text(address_tree, tvb, offset, length, - "Address: %s (truncated)", - tvb_bytes_to_str(tvb, offset, length)); - } - 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. */ - length = 2 + protocol_length + 2 + address_length; - address_type_str = NULL; - address_str = NULL; - 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. */ - address_type_str = "IP address"; - address_str = ip_to_str(tvb_get_ptr(tvb, offset, 4)); - } - break; - } - } - if (address_type_str == NULL) - address_type_str = "Address"; - if (address_str == NULL) { - address_str = tvb_bytes_to_str(tvb, offset, address_length); - } - proto_item_set_text(ti, "%s: %s", address_type_str, address_str); - proto_tree_add_text(address_tree, tvb, offset, address_length, "%s: %s", - address_type_str, address_str); - 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; - guint32 capabilities; - - if (length < 4) - return; - capabilities = tvb_get_ntohl(tvb, offset); - ti = proto_tree_add_text(tree, tvb, offset, length, "Capabilities: 0x%08x", - capabilities); - capabilities_tree = proto_item_add_subtree(ti, ett_cdp_capabilities); - proto_tree_add_text(capabilities_tree, tvb, offset, 4, - decode_boolean_bitfield(capabilities, 0x01, 4*8, - "Is a Router", - "Not a Router")); - proto_tree_add_text(capabilities_tree, tvb, offset, 4, - decode_boolean_bitfield(capabilities, 0x02, 4*8, - "Is a Transparent Bridge", - "Not a Transparent Bridge")); - proto_tree_add_text(capabilities_tree, tvb, offset, 4, - decode_boolean_bitfield(capabilities, 0x04, 4*8, - "Is a Source Route Bridge", - "Not a Source Route Bridge")); - proto_tree_add_text(capabilities_tree, tvb, offset, 4, - decode_boolean_bitfield(capabilities, 0x08, 4*8, - "Is a Switch", - "Not a Switch")); - proto_tree_add_text(capabilities_tree, tvb, offset, 4, - decode_boolean_bitfield(capabilities, 0x10, 4*8, - "Is a Host", - "Not a Host")); - proto_tree_add_text(capabilities_tree, tvb, offset, 4, - decode_boolean_bitfield(capabilities, 0x20, 4*8, - "Is IGMP capable", - "Not IGMP capable")); - proto_tree_add_text(capabilities_tree, tvb, offset, 4, - decode_boolean_bitfield(capabilities, 0x40, 4*8, - "Is a Repeater", - "Not a Repeater")); -} - -static void -add_multi_line_string_to_tree(proto_tree *tree, tvbuff_t *tvb, gint start, - gint len, const gchar *prefix) -{ - int prefix_len; - int i; - char blanks[64+1]; - gint next; - int line_len; - int data_len; - - prefix_len = strlen(prefix); - if (prefix_len > 64) - prefix_len = 64; - for (i = 0; i < prefix_len; i++) - blanks[i] = ' '; - blanks[i] = '\0'; - while (len > 0) { - line_len = tvb_find_line_end(tvb, start, len, &next, FALSE); - data_len = next - start; - proto_tree_add_text(tree, tvb, start, data_len, "%s%s", prefix, - tvb_format_stringzpad(tvb, start, line_len)); - start += data_len; - len -= data_len; - prefix = blanks; - } -} - -void -proto_register_cdp(void) -{ - static hf_register_info hf[] = { - { &hf_cdp_version, - { "Version", "cdp.version", FT_UINT8, BASE_DEC, NULL, 0x0, - "", HFILL }}, - - { &hf_cdp_ttl, - { "TTL", "cdp.ttl", FT_UINT16, BASE_DEC, NULL, 0x0, - "", HFILL }}, - - { &hf_cdp_checksum, - { "Checksum", "cdp.checksum", FT_UINT16, BASE_HEX, NULL, 0x0, - "", HFILL }}, - - { &hf_cdp_tlvtype, - { "Type", "cdp.tlv.type", FT_UINT16, BASE_HEX, VALS(type_vals), 0x0, - "", HFILL }}, - - { &hf_cdp_tlvlength, - { "Length", "cdp.tlv.len", FT_UINT16, BASE_DEC, NULL, 0x0, - "", HFILL }}, - }; - static gint *ett[] = { - &ett_cdp, - &ett_cdp_tlv, - &ett_cdp_address, - &ett_cdp_capabilities, - }; - - 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)); -} - -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("llc.cisco_pid", 0x2000, cdp_handle); - dissector_add("chdlctype", 0x2000, cdp_handle); - dissector_add("ppp.protocol", 0x0207, cdp_handle); -} |