aboutsummaryrefslogtreecommitdiffstats
path: root/packet-cdp.c
diff options
context:
space:
mode:
authorGilbert Ramirez <gram@alumni.rice.edu>2004-07-18 18:06:47 +0000
committerGilbert Ramirez <gram@alumni.rice.edu>2004-07-18 18:06:47 +0000
commit669db206cb1f270046ad400fff7655e20c63e723 (patch)
tree4eff24a2e16c8963e497e1fc575f35e6af59bd26 /packet-cdp.c
parentae46c27a38700af669ef907491081f09df6f6b2c (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.c832
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);
-}