373 lines
12 KiB
C
373 lines
12 KiB
C
/* packet-hpsw.c
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* Routines for HP Switch Config protocol
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* Charlie Lenahan <clenahan@fortresstech.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include "packet-hpext.h"
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void proto_register_hpsw(void);
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void proto_reg_handoff_hpsw(void);
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static int proto_hpsw = -1;
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static int hf_hpsw_version = -1;
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static int hf_hpsw_type = -1;
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static int hf_hpsw_tlvtype = -1;
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static int hf_hpsw_tlvlength = -1;
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static int hf_hpsw_field_10 = -1;
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static int hf_hpsw_own_mac_addr = -1;
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static int hf_hpsw_neighbor_mac_addr = -1;
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static int hf_hpsw_field_6 = -1;
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static int hf_hpsw_field_9 = -1;
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static int hf_hpsw_device_version = -1;
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static int hf_hpsw_device_name = -1;
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static int hf_hpsw_ip_addr = -1;
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static int hf_hpsw_field_8 = -1;
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static int hf_hpsw_domain = -1;
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static int hf_hpsw_field_12 = -1;
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static int hf_hpsw_config_name = -1;
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static int hf_hpsw_root_mac_addr = -1;
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static int hf_hpsw_device_id = -1;
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static int hf_hpsw_device_id_data = -1;
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static int hf_hpsw_data = -1;
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static gint ett_hpsw = -1;
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static gint ett_hpsw_tlv = -1;
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static expert_field ei_hpsw_tlvlength_bad = EI_INIT;
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static dissector_handle_t hpsw_handle;
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#define HPFOO_DEVICE_NAME 0x1
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#define HPFOO_DEVICE_VERSION 0x2
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#define HPFOO_CONFIG_NAME 0x3
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#define HPFOO_ROOT_MAC_ADDR 0x4
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#define HPFOO_IP_ADDR 0x5
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#define HPFOO_FIELD_6 0x6
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#define HPFOO_DOMAIN 0x7
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#define HPFOO_FIELD_8 0x8
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#define HPFOO_FIELD_9 0x9
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#define HPFOO_FIELD_10 0xa
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#define HPFOO_NEIGHBORS 0xb
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#define HPFOO_FIELD_12 0xc
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#define HPFOO_DEVICE_ID 0xd
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#define HPFOO_OWN_MAC_ADDR 0xe
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static const value_string hpsw_tlv_type_vals[] = {
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{ HPFOO_DEVICE_NAME, "Device Name" },
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{ HPFOO_DEVICE_VERSION, "Version" },
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{ HPFOO_CONFIG_NAME, "Config Name" },
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{ HPFOO_ROOT_MAC_ADDR, "Root MAC Addr" },
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{ HPFOO_IP_ADDR, "IP Addr" },
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{ HPFOO_FIELD_6, "Field 6" },
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{ HPFOO_DOMAIN, "Domain" },
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{ HPFOO_FIELD_8, "Field 8" },
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{ HPFOO_FIELD_9, "Field 9" },
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{ HPFOO_FIELD_10, "Field 10" },
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{ HPFOO_NEIGHBORS, "Neighbors" },
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{ HPFOO_FIELD_12, "Field 12" },
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{ HPFOO_DEVICE_ID, "Device ID" },
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{ HPFOO_OWN_MAC_ADDR, "2nd MAC Addr" },
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{ 0x00, NULL }
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};
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static void
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dissect_hpsw_tlv(tvbuff_t *tvb, packet_info *pinfo, int offset, int length,
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proto_tree *tree, proto_item *ti, guint8 type)
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{
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switch (type) {
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case HPFOO_DEVICE_NAME:
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if (length > 0) {
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proto_tree_add_item(tree, hf_hpsw_device_name, tvb, offset, length, ENC_NA|ENC_ASCII);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Device Name: Bad length %u", length);
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}
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break;
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case HPFOO_DEVICE_VERSION:
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if (length > 0) {
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proto_tree_add_item(tree, hf_hpsw_device_version, tvb, offset, length, ENC_NA|ENC_ASCII);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Version: Bad length %u", length);
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}
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break;
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case HPFOO_CONFIG_NAME:
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if (length > 0) {
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proto_tree_add_item(tree, hf_hpsw_config_name, tvb, offset, length, ENC_NA|ENC_ASCII);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Config Name: Bad length %u", length);
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}
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break;
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case HPFOO_ROOT_MAC_ADDR:
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if (length == 6) {
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proto_tree_add_item(tree, hf_hpsw_root_mac_addr, tvb, offset, length, ENC_NA);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Root MAC Addr: Bad length %u", length);
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}
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break;
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case HPFOO_IP_ADDR:
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if (length == 4) {
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proto_tree_add_item(tree, hf_hpsw_ip_addr, tvb, offset, length, ENC_BIG_ENDIAN);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "IP Addr: Bad length %u", length);
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}
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break;
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case HPFOO_FIELD_6:
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if (length == 2) {
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proto_tree_add_item(tree, hf_hpsw_field_6, tvb, offset, length, ENC_BIG_ENDIAN);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 6: Bad length %u", length);
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}
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break;
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case HPFOO_DOMAIN:
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if (length > 0) {
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proto_tree_add_item(tree, hf_hpsw_domain, tvb, offset, length, ENC_NA|ENC_ASCII);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Domain: Bad length %u", length);
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}
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break;
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case HPFOO_FIELD_8:
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if (length == 2) {
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proto_tree_add_item(tree, hf_hpsw_field_8, tvb, offset, length, ENC_BIG_ENDIAN);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 8: Bad length %u", length);
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}
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break;
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case HPFOO_FIELD_9:
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if (length == 2) {
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proto_tree_add_item(tree, hf_hpsw_field_9, tvb, offset, length, ENC_BIG_ENDIAN);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 9: Bad length %u", length);
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}
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break;
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case HPFOO_FIELD_10:
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if (length == 4) {
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proto_tree_add_item(tree, hf_hpsw_field_10, tvb, offset, length, ENC_BIG_ENDIAN);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 10: Bad length %u", length);
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}
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break;
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case HPFOO_NEIGHBORS:
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if (!(length % 6))
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{ int i = length/6;
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proto_item_set_text(proto_tree_get_parent(tree), "Number of neighbor MAC Addresses: %u", i);
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for ( ; i; i--)
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{
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proto_tree_add_item(tree, hf_hpsw_neighbor_mac_addr, tvb, offset, 6, ENC_NA);
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offset += 6;
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}
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Neighbors: Bad length %u", length);
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}
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break;
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case HPFOO_FIELD_12:
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if (length == 1) {
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proto_tree_add_item(tree, hf_hpsw_field_12, tvb, offset, length, ENC_BIG_ENDIAN);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Field 12: Bad length %u", length);
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}
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break;
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case HPFOO_DEVICE_ID:
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if (length > 6) {
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proto_tree_add_item(tree, hf_hpsw_device_id, tvb, offset, 6, ENC_NA);
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proto_tree_add_item(tree, hf_hpsw_device_id_data, tvb, offset+6, length-6, ENC_NA);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Device ID: Bad length %u", length);
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}
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break;
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case HPFOO_OWN_MAC_ADDR:
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if (length == 6) {
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proto_tree_add_item(tree, hf_hpsw_own_mac_addr, tvb, offset, length, ENC_NA);
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} else {
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expert_add_info_format(pinfo, ti, &ei_hpsw_tlvlength_bad, "Own MAC Addr: Bad length %u", length);
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}
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break;
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default:
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proto_tree_add_item(tree, hf_hpsw_data, tvb, offset, length, ENC_NA);
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break;
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}
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}
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static int
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dissect_hpsw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_tree *hp_tree;
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proto_tree *tlv_tree;
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proto_item *ti;
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guint8 version;
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gint offset = 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "HP");
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col_set_str(pinfo->cinfo, COL_INFO, "HP Switch Protocol");
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version = tvb_get_guint8(tvb, 0);
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ti = proto_tree_add_item(tree, proto_hpsw, tvb, 0, -1, ENC_NA);
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hp_tree = proto_item_add_subtree(ti, ett_hpsw);
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proto_tree_add_uint(hp_tree, hf_hpsw_version, tvb, 0, 1, version);
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offset += 1;
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proto_tree_add_item(hp_tree, hf_hpsw_type, tvb, 1, 1, ENC_BIG_ENDIAN);
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offset += 1;
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while ( tvb_reported_length_remaining(tvb, offset) > 0 )
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{
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guint8 type, length;
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type = tvb_get_guint8(tvb, offset);
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length = tvb_get_guint8(tvb, offset+1);
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/* make sure still in valid tlv */
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if (( length < 1 ) || ( length > tvb_reported_length_remaining(tvb, offset+2)))
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break;
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tlv_tree = proto_tree_add_subtree(hp_tree, tvb, offset, length+2, ett_hpsw_tlv, NULL,
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val_to_str(type, hpsw_tlv_type_vals, "Unknown TLV type: 0x%02x"));
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/* type */
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proto_tree_add_uint(tlv_tree, hf_hpsw_tlvtype, tvb, offset, 1, type);
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offset += 1;
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/* LENGTH (not inclusive of type and length bytes) */
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ti = proto_tree_add_uint(tlv_tree, hf_hpsw_tlvlength, tvb, offset, 1, length);
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offset += 1;
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dissect_hpsw_tlv(tvb, pinfo, offset, length, tlv_tree, ti, type);
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offset += length;
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}
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return tvb_captured_length(tvb);
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}
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void
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proto_register_hpsw(void)
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{
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static hf_register_info hf[] = {
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{ &hf_hpsw_version,
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{ "Version", "hpsw.version", FT_UINT8, BASE_HEX,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_type,
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{ "Type", "hpsw.type", FT_UINT8, BASE_HEX,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_tlvtype,
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{ "Type", "hpsw.tlv_type", FT_UINT8, BASE_HEX,
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VALS(hpsw_tlv_type_vals), 0x0, NULL, HFILL }},
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{ &hf_hpsw_tlvlength,
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{ "Length", "hpsw.tlv_len", FT_UINT8, BASE_DEC,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_device_name,
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{ "Device Name", "hpsw.device_name", FT_STRING, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_device_version,
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{ "Version", "hpsw.device_version", FT_STRING, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_config_name,
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{ "Config Name", "hpsw.config_name", FT_STRING, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_root_mac_addr,
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{ "Root MAC Addr", "hpsw.root_mac_addr", FT_ETHER, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_ip_addr,
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{ "IP Addr", "hpsw.ip_addr", FT_IPv4, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_field_6,
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{ "Field 6", "hpsw.field_6", FT_UINT16, BASE_HEX,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_domain,
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{ "Domain", "hpsw.domain", FT_STRING, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_field_8,
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{ "Field 8", "hpsw.field_8", FT_UINT16, BASE_HEX,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_field_9,
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{ "Field 9", "hpsw.field_9", FT_UINT16, BASE_HEX,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_field_10,
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{ "Field 10", "hpsw.field_10", FT_UINT32, BASE_HEX,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_neighbor_mac_addr,
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{ "MAC Addr", "hpsw.neighbor_mac_addr", FT_ETHER, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_field_12,
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{ "Field 12", "hpsw.field_12", FT_UINT8, BASE_HEX,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_own_mac_addr,
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{ "Own MAC Addr", "hpsw.own_mac_addr", FT_ETHER, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_device_id,
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{ "Device ID", "hpsw.device_id", FT_ETHER, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_device_id_data,
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{ "Data", "hpsw.device_id_data", FT_BYTES, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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{ &hf_hpsw_data,
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{ "Data", "hpsw.data", FT_BYTES, BASE_NONE,
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NULL, 0x0, NULL, HFILL }},
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};
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static gint *ett[] = {
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&ett_hpsw,
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&ett_hpsw_tlv
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};
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static ei_register_info ei[] = {
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{ &ei_hpsw_tlvlength_bad, { "hpsw.tlv_len.bad", PI_PROTOCOL, PI_WARN, "Bad length", EXPFILL }},
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};
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expert_module_t* expert_hpsw;
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proto_hpsw = proto_register_protocol( "HP Switch Protocol", "HPSW", "hpsw");
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proto_register_field_array(proto_hpsw, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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expert_hpsw = expert_register_protocol(proto_hpsw);
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expert_register_field_array(expert_hpsw, ei, array_length(ei));
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hpsw_handle = register_dissector("hpsw", dissect_hpsw, proto_hpsw);
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}
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void
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proto_reg_handoff_hpsw(void)
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{
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dissector_add_uint("hpext.dxsap", HPEXT_HPSW, hpsw_handle);
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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