forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
If the calculated packet length in the header is bigger than the actual packet length value from the header, reject the packet. Change-Id: I86cb24c66ee0d6fd2ed6f9240d44c1adc5f0bf91 Reviewed-on: https://code.wireshark.org/review/27087 Reviewed-by: Guy Harris <guy@alum.mit.edu>
666 lines
19 KiB
C
666 lines
19 KiB
C
/* packet-bvlc.c
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* Routines for BACnet/IP (BVLL, BVLC) dissection
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* Copyright 2001, Hartmut Mueller <hartmut@abmlinux.org>, FH Dortmund
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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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* Copied from README.developer,v 1.23
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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 "packet-bacnet.h"
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void proto_register_bvlc(void);
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void proto_reg_handoff_bvlc(void);
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#define BVLC_UDP_PORT 0xBAC0
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/* Network Layer Wrapper Control Information */
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#define BAC_WRAPPER_CONTROL_NET 0x80
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#define BAC_WRAPPER_MSG_ENCRYPED 0x40
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#define BAC_WRAPPER_RESERVED 0x20
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#define BAC_WRAPPER_AUTHD_PRESENT 0x10
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#define BAC_WRAPPER_DO_NOT_UNWRAP 0x08
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#define BAC_WRAPPER_DO_NOT_DECRPT 0x04
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#define BAC_WRAPPER_NO_TRUST_SRC 0x02
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#define BAC_WRAPPER_SECURE_BY_RTR 0x01
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static int proto_bvlc = -1;
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static int hf_bvlc_type = -1;
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static int hf_bvlc_function = -1;
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static int hf_bvlc_ipv6_function = -1;
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static int hf_bvlc_length = -1;
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static int hf_bvlc_result_ip4 = -1;
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static int hf_bvlc_result_ip6 = -1;
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static int hf_bvlc_bdt_ip = -1;
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static int hf_bvlc_bdt_mask = -1;
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static int hf_bvlc_bdt_port = -1;
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static int hf_bvlc_reg_ttl = -1;
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static int hf_bvlc_fdt_ip = -1;
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static int hf_bvlc_fdt_ipv6 = -1;
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static int hf_bvlc_fdt_port = -1;
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static int hf_bvlc_fdt_ttl = -1;
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static int hf_bvlc_fdt_timeout = -1;
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static int hf_bvlc_fwd_ip = -1;
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static int hf_bvlc_fwd_port = -1;
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static int hf_bvlc_virt_source = -1;
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static int hf_bvlc_virt_dest = -1;
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static int hf_bvlc_orig_source_addr = -1;
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static int hf_bvlc_orig_source_port = -1;
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static dissector_table_t bvlc_dissector_table;
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static dissector_table_t bvlc_ipv6_dissector_table;
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static dissector_handle_t bvlc_handle = NULL;
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static const value_string bvlc_function_names[] = {
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{ 0x00, "BVLC-Result", },
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{ 0x01, "Write-Broadcast-Distribution-Table", },
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{ 0x02, "Read-Broadcast-Distribution-Table", },
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{ 0x03, "Read-Broadcast-Distribution-Table-Ack", },
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{ 0x04, "Forwarded-NPDU", },
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{ 0x05, "Register-Foreign-Device", },
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{ 0x06, "Read-Foreign-Device-Table", },
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{ 0x07, "Read-Foreign-Device-Table-Ack", },
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{ 0x08, "Delete-Foreign-Device-Table-Entry", },
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{ 0x09, "Distribute-Broadcast-To-Network", },
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{ 0x0a, "Original-Unicast-NPDU", },
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{ 0x0b, "Original-Broadcast-NPDU" },
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{ 0x0c, "Secured-BVLL" },
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{ 0, NULL }
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};
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static const value_string bvlc_result_names[] = {
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{ 0x00, "Successful completion" },
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{ 0x10, "Write-Broadcast-Distribution-Table NAK" },
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{ 0x20, "Read-Broadcast-Distribution-Table NAK" },
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{ 0x30, "Register-Foreign-Device NAK" },
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{ 0x40, "Read-Foreign-Device-Table NAK" },
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{ 0x50, "Delete-Foreign-Device-Table-Entry NAK" },
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{ 0x60, "Distribute-Broadcast-To-Network NAK" },
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{ 0, NULL }
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};
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static const value_string bvlc_ipv6_function_names[] = {
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{ 0x00, "BVLC-Result", },
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{ 0x01, "Original-Unicast-NPDU", },
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{ 0x02, "Original-Broadcast-NPDU", },
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{ 0x03, "Address-Resolution", },
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{ 0x04, "Forwarded-Address-Resolution", },
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{ 0x05, "Address-Resolution-ACK", },
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{ 0x06, "Virtual-Address-Resolution", },
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{ 0x07, "Virtual-Address-Resolution-ACK", },
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{ 0x08, "Forwarded-NPDU", },
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{ 0x09, "Register-Foreign-Device", },
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{ 0x0A, "Delete-Foreign-Device-Table-Entry", },
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{ 0x0B, "Secure-BVLL", },
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{ 0x0C, "Distribute-Broadcast-To-Network", },
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{ 0, NULL }
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};
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static const value_string bvlc_ipv6_result_names[] = {
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{ 0x00, "Successful completion" },
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{ 0x30, "Address-Resolution NAK" },
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{ 0x60, "Virtual-Address-Resolution NAK" },
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{ 0x90, "Register-Foreign-Device NAK" },
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{ 0xA0, "Delete-Foreign-Device-Table-Entry NAK" },
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{ 0xC0, "Distribute-Broadcast-To-Network NAK" },
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{ 0, NULL }
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};
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static gint ett_bvlc = -1;
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static gint ett_bdt = -1;
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static gint ett_fdt = -1;
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#define BACNET_IP_ANNEX_J 0x81
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#define BACNET_IPV6_ANNEX_U 0x82
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static const value_string bvlc_types[] = {
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{ BACNET_IP_ANNEX_J, "BACnet/IP (Annex J)" },
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{ BACNET_IPV6_ANNEX_U, "BACnet/IPV6 (Annex U)" },
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{ 0, NULL }
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};
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static int
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dissect_ipv4_bvlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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proto_item *ti;
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proto_item *ti_bdt;
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proto_item *ti_fdt;
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proto_tree *bvlc_tree;
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proto_tree *bdt_tree; /* Broadcast Distribution Table */
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proto_tree *fdt_tree; /* Foreign Device Table */
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gint offset;
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guint8 bvlc_type;
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guint8 bvlc_function;
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guint16 bvlc_length;
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guint16 packet_length;
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guint npdu_length;
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guint length_remaining;
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tvbuff_t *next_tvb;
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offset = 0;
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bvlc_type = tvb_get_guint8(tvb, offset);
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bvlc_function = tvb_get_guint8(tvb, offset + 1);
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packet_length = tvb_get_ntohs(tvb, offset + 2);
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length_remaining = tvb_reported_length_remaining(tvb, offset);
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if (bvlc_function > 0x08) {
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/* We have a constant header length of BVLC of 4 in every
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* BVLC-packet forewarding an NPDU. Beware: Changes in the
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* BACnet-IP-standard may break this.
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*/
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bvlc_length = 4;
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} else if (bvlc_function == 0x04) {
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/* 4 Bytes + 6 Bytes for B/IP Address of Originating Device */
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bvlc_length = 10;
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} else {
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/* BVLC-packets with function below 0x09 contain
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* routing-level data (e.g. Broadcast Distribution)
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* but no NPDU for BACnet, so bvlc_length goes up to the end
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* of the captured frame.
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*/
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bvlc_length = packet_length;
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}
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if (bvlc_length < 4 || bvlc_length > packet_length) {
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return 0; /* reject */
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}
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ti = proto_tree_add_item(tree, proto_bvlc, tvb, 0, bvlc_length, ENC_NA);
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bvlc_tree = proto_item_add_subtree(ti, ett_bvlc);
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proto_tree_add_uint(bvlc_tree, hf_bvlc_type, tvb, offset, 1,
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bvlc_type);
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offset++;
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proto_tree_add_uint(bvlc_tree, hf_bvlc_function, tvb,
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offset, 1, bvlc_function);
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offset++;
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if (length_remaining != packet_length)
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proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset,
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2, bvlc_length,
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"%d of %d bytes (invalid length - expected %d bytes)",
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bvlc_length, packet_length, length_remaining);
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else
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proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset,
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2, bvlc_length, "%d of %d bytes BACnet packet length",
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bvlc_length, packet_length);
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offset += 2;
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switch (bvlc_function) {
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case 0x00: /* BVLC-Result */
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/* I don't know why the result code is encoded in 4 nibbles,
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* but only using one: 0x00r0. Shifting left 4 bits.
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*/
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/* We should bitmask the result correctly when we have a
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* packet to dissect, see README.developer, 1.6.2, FID */
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proto_tree_add_item(bvlc_tree, hf_bvlc_result_ip4, tvb,
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offset, 2, ENC_BIG_ENDIAN);
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/*offset += 2;*/
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break;
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case 0x01: /* Write-Broadcast-Distribution-Table */
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case 0x03: /* Read-Broadcast-Distribution-Table-Ack */
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/* List of BDT Entries: N*10-octet */
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ti_bdt = proto_tree_add_item(bvlc_tree, proto_bvlc, tvb,
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offset, bvlc_length-4, ENC_NA);
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bdt_tree = proto_item_add_subtree(ti_bdt, ett_bdt);
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/* List of BDT Entries: N*10-octet */
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while ((bvlc_length - offset) > 9) {
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proto_tree_add_item(bdt_tree, hf_bvlc_bdt_ip,
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tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(bdt_tree, hf_bvlc_bdt_port,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(bdt_tree,
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hf_bvlc_bdt_mask, tvb, offset, 4,
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ENC_NA);
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offset += 4;
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}
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/* We check this if we get a BDT-packet somewhere */
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break;
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case 0x02: /* Read-Broadcast-Distribution-Table */
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/* nothing to do here */
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break;
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case 0x05: /* Register-Foreign-Device */
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/* Time-to-Live 2-octets T, Time-to-Live T, in seconds */
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proto_tree_add_item(bvlc_tree, hf_bvlc_reg_ttl,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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/*offset += 2;*/
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break;
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case 0x06: /* Read-Foreign-Device-Table */
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/* nothing to do here */
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break;
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case 0x07: /* Read-Foreign-Device-Table-Ack */
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/* List of FDT Entries: N*10-octet */
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/* N indicates the number of entries in the FDT whose
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* contents are being returned. Each returned entry
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* consists of the 6-octet B/IP address of the registrant;
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* the 2-octet Time-to-Live value supplied at the time of
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* registration; and a 2-octet value representing the
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* number of seconds remaining before the BBMD will purge
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* the registrant's FDT entry if no re-registration occurs.
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*/
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ti_fdt = proto_tree_add_item(bvlc_tree, proto_bvlc, tvb,
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offset, bvlc_length -4, ENC_NA);
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fdt_tree = proto_item_add_subtree(ti_fdt, ett_fdt);
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/* List of FDT Entries: N*10-octet */
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while ((bvlc_length - offset) > 9) {
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proto_tree_add_item(fdt_tree, hf_bvlc_fdt_ip,
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tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(fdt_tree, hf_bvlc_fdt_port,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(fdt_tree,
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hf_bvlc_fdt_ttl, tvb, offset, 2,
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ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(fdt_tree,
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hf_bvlc_fdt_timeout, tvb, offset, 2,
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ENC_BIG_ENDIAN);
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offset += 2;
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}
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/* We check this if we get a FDT-packet somewhere */
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break;
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case 0x08: /* Delete-Foreign-Device-Table-Entry */
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/* FDT Entry: 6-octets */
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proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_ip,
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tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_port,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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/*offset += 2;*/
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break;
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case 0x0C: /* Secure-BVLL */
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offset = bacnet_dissect_sec_wrapper(tvb, pinfo, tree, offset, NULL);
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if (offset < 0) {
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call_data_dissector(tvb, pinfo, tree);
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return tvb_captured_length(tvb);
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}
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dissect_ipv4_bvlc(tvb, pinfo, tree, data);
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break;
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/* We check this if we get a FDT-packet somewhere */
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case 0x04: /* Forwarded-NPDU
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* Why is this 0x04? It would have been a better
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* idea to append all forewarded NPDUs at the
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* end of the function table in the B/IP-standard!
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*/
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/* proto_tree_add_bytes_format(); */
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proto_tree_add_item(bvlc_tree, hf_bvlc_fwd_ip,
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tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(bvlc_tree, hf_bvlc_fwd_port,
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tvb, offset, 2, ENC_BIG_ENDIAN);
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/*offset += 2;*/
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break;
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default:
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/* Distribute-Broadcast-To-Network
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* Original-Unicast-NPDU
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* Original-Broadcast-NPDU
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* Going to the next dissector...
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*/
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break;
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}
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/* Ok, no routing information BVLC packet. Dissect as
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* BACnet NPDU
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*/
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npdu_length = packet_length - bvlc_length;
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next_tvb = tvb_new_subset_length_caplen(tvb, bvlc_length, -1, npdu_length);
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/* Code from Guy Harris */
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if (!dissector_try_uint(bvlc_dissector_table,
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bvlc_function, next_tvb, pinfo, tree)) {
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/* Unknown function - dissect the paylod as data */
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call_data_dissector(next_tvb, pinfo, tree);
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}
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return tvb_reported_length(tvb);
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}
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static int
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dissect_ipv6_bvlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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proto_item *ti;
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proto_tree *bvlc_tree;
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gint offset;
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guint8 bvlc_type;
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guint8 bvlc_function;
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guint16 bvlc_length = 0;
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guint16 packet_length;
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guint npdu_length;
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guint length_remaining;
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tvbuff_t *next_tvb;
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offset = 0;
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bvlc_type = tvb_get_guint8(tvb, offset);
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bvlc_function = tvb_get_guint8(tvb, offset + 1);
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packet_length = tvb_get_ntohs(tvb, offset + 2);
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length_remaining = tvb_reported_length_remaining(tvb, offset);
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switch (bvlc_function) {
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case 0x00:
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case 0x09:
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bvlc_length = 9;
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break;
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case 0x01:
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bvlc_length = 10;
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break;
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case 0x02:
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case 0x06:
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case 0x0C:
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bvlc_length = 7;
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break;
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case 0x03:
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case 0x05:
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case 0x07:
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bvlc_length = 10;
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break;
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case 0x04:
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bvlc_length = 28;
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break;
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case 0x08:
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case 0x0A:
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bvlc_length = 25;
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break;
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case 0x0B:
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bvlc_length = 4;
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break;
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default:
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break;
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}
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if (bvlc_length > packet_length) {
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return 0; /* reject */
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}
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ti = proto_tree_add_item(tree, proto_bvlc, tvb, 0,
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bvlc_length, ENC_NA);
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bvlc_tree = proto_item_add_subtree(ti, ett_bvlc);
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/* add the BVLC type */
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proto_tree_add_uint(bvlc_tree, hf_bvlc_type, tvb, offset, 1,
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bvlc_type);
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offset++;
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/* add the BVLC function */
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proto_tree_add_uint(bvlc_tree, hf_bvlc_ipv6_function, tvb,
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offset, 1, bvlc_function);
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offset++;
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/* add the length information */
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if (length_remaining != packet_length)
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proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset,
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2, bvlc_length,
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"%d of %d bytes (invalid length - expected %d bytes)",
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bvlc_length, packet_length, length_remaining);
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else
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proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset,
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2, bvlc_length,
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"%d of %d bytes BACnet packet length",
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bvlc_length, packet_length);
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offset += 2;
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/* add the optional present virtual source address */
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if (bvlc_function != 0x0B) {
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proto_tree_add_item(bvlc_tree, hf_bvlc_virt_source, tvb, offset,
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3, ENC_BIG_ENDIAN);
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offset += 3;
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}
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/* handle additional function parameters */
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switch (bvlc_function) {
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case 0x00: /* BVLC-Result */
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proto_tree_add_item(bvlc_tree, hf_bvlc_result_ip6, tvb,
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offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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break;
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case 0x01: /* Original-Unicast-NPDU */
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case 0x03: /* Address-Resolution */
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case 0x05: /* Address-Resolution-ACK */
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case 0x07: /* Virtual-Address-Resolution-ACK */
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proto_tree_add_item(bvlc_tree, hf_bvlc_virt_dest, tvb, offset,
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3, ENC_BIG_ENDIAN);
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offset += 3;
|
|
break;
|
|
case 0x04: /* Forwarded-Address-Resolution */
|
|
case 0x08: /* Forwarded-NPDU */
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_virt_dest, tvb, offset,
|
|
3, ENC_BIG_ENDIAN);
|
|
offset += 3;
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_orig_source_addr,
|
|
tvb, offset, 16, ENC_NA);
|
|
offset += 16;
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_orig_source_port,
|
|
tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
break;
|
|
case 0x06: /* Virtual-Address-Resolution */
|
|
break;
|
|
case 0x09: /* Register-Foreign-Device */
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_reg_ttl,
|
|
tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
break;
|
|
case 0x0A: /* Delete-Foreign-Device-Table-Entry */
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_ipv6,
|
|
tvb, offset, 16, ENC_NA);
|
|
offset += 16;
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_port,
|
|
tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
break;
|
|
case 0x0B: /* Secure-BVLL */
|
|
offset = bacnet_dissect_sec_wrapper(tvb, pinfo, tree, offset, NULL);
|
|
if (offset < 0) {
|
|
call_data_dissector(tvb, pinfo, tree);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
dissect_ipv6_bvlc(tvb, pinfo, tree, data);
|
|
break;
|
|
case 0x02: /* Original-Broadcast-NPDU */
|
|
case 0x0c: /* Distribute-Broadcast-To-Network */
|
|
default:
|
|
/*
|
|
* Going to the next dissector...
|
|
*/
|
|
break;
|
|
}
|
|
|
|
/* Ok, no routing information BVLC packet. Dissect as
|
|
* BACnet NPDU
|
|
*/
|
|
npdu_length = packet_length - offset;
|
|
next_tvb = tvb_new_subset_length_caplen(tvb, offset, -1, npdu_length);
|
|
/* Code from Guy Harris */
|
|
if ( ! dissector_try_uint(bvlc_ipv6_dissector_table,
|
|
bvlc_function, next_tvb, pinfo, tree)) {
|
|
/* Unknown function - dissect the paylod as data */
|
|
call_data_dissector(next_tvb, pinfo, tree);
|
|
}
|
|
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_bvlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
|
|
{
|
|
guint8 bvlc_type;
|
|
guint ret = 0;
|
|
|
|
bvlc_type = tvb_get_guint8(tvb, 0);
|
|
|
|
/*
|
|
* Simple sanity check - make sure the type is one we know about.
|
|
*/
|
|
if (try_val_to_str(bvlc_type, bvlc_types) == NULL)
|
|
return 0;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "BVLC");
|
|
col_set_str(pinfo->cinfo, COL_INFO, "BACnet Virtual Link Control");
|
|
|
|
switch (bvlc_type)
|
|
{
|
|
case BACNET_IP_ANNEX_J:
|
|
ret = dissect_ipv4_bvlc(tvb, pinfo, tree, data);
|
|
break;
|
|
case BACNET_IPV6_ANNEX_U:
|
|
ret = dissect_ipv6_bvlc(tvb, pinfo, tree, data);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
proto_register_bvlc(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_bvlc_type,
|
|
{ "Type", "bvlc.type",
|
|
FT_UINT8, BASE_HEX, VALS(bvlc_types), 0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_bvlc_function,
|
|
{ "Function", "bvlc.function",
|
|
FT_UINT8, BASE_HEX, VALS(bvlc_function_names), 0,
|
|
"BVLC Function", HFILL }
|
|
},
|
|
{ &hf_bvlc_ipv6_function,
|
|
{ "Function", "bvlc.function_ipv6",
|
|
FT_UINT8, BASE_HEX, VALS(bvlc_ipv6_function_names), 0,
|
|
"BVLC Function IPV6", HFILL }
|
|
},
|
|
{ &hf_bvlc_length,
|
|
{ "BVLC-Length", "bvlc.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"Length of BVLC", HFILL }
|
|
},
|
|
{ &hf_bvlc_virt_source,
|
|
{ "BVLC-Virtual-Source", "bvlc.virtual_source",
|
|
FT_UINT24, BASE_DEC_HEX, NULL, 0,
|
|
"Virtual source address of BVLC", HFILL }
|
|
},
|
|
{ &hf_bvlc_virt_dest,
|
|
{ "BVLC-Virtual-Destination", "bvlc.virtual_dest",
|
|
FT_UINT24, BASE_DEC_HEX, NULL, 0,
|
|
"Virtual destination address of BVLC", HFILL }
|
|
},
|
|
{ &hf_bvlc_result_ip4,
|
|
{ "Result", "bvlc.result",
|
|
FT_UINT16, BASE_HEX, VALS(bvlc_result_names), 0,
|
|
"Result Code", HFILL }
|
|
},
|
|
{ &hf_bvlc_result_ip6,
|
|
{ "Result", "bvlc.result",
|
|
FT_UINT16, BASE_HEX, VALS(bvlc_ipv6_result_names), 0,
|
|
"Result Code", HFILL }
|
|
},
|
|
{ &hf_bvlc_bdt_ip,
|
|
{ "IP", "bvlc.bdt_ip",
|
|
FT_IPv4, BASE_NONE, NULL, 0,
|
|
"BDT IP", HFILL }
|
|
},
|
|
{ &hf_bvlc_bdt_port,
|
|
{ "Port", "bvlc.bdt_port",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"BDT Port", HFILL }
|
|
},
|
|
{ &hf_bvlc_bdt_mask,
|
|
{ "Mask", "bvlc.bdt_mask",
|
|
FT_BYTES, BASE_NONE, NULL, 0,
|
|
"BDT Broadcast Distribution Mask", HFILL }
|
|
},
|
|
{ &hf_bvlc_reg_ttl,
|
|
{ "TTL", "bvlc.reg_ttl",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"Foreign Device Time To Live", HFILL }
|
|
},
|
|
{ &hf_bvlc_fdt_ip,
|
|
{ "IP", "bvlc.fdt_ip",
|
|
FT_IPv4, BASE_NONE, NULL, 0,
|
|
"FDT IP", HFILL }
|
|
},
|
|
{ &hf_bvlc_fdt_ipv6,
|
|
{ "IP", "bvlc.fdt_ipv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0,
|
|
"FDT IP", HFILL }
|
|
},
|
|
{ &hf_bvlc_fdt_port,
|
|
{ "Port", "bvlc.fdt_port",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"FDT Port", HFILL }
|
|
},
|
|
{ &hf_bvlc_fdt_ttl,
|
|
{ "TTL", "bvlc.fdt_ttl",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"Foreign Device Time To Live", HFILL }
|
|
},
|
|
{ &hf_bvlc_fdt_timeout,
|
|
{ "Timeout", "bvlc.fdt_timeout",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"Foreign Device Timeout (seconds)", HFILL }
|
|
},
|
|
{ &hf_bvlc_fwd_ip,
|
|
{ "IP", "bvlc.fwd_ip",
|
|
FT_IPv4, BASE_NONE, NULL, 0,
|
|
"FWD IP", HFILL }
|
|
},
|
|
{ &hf_bvlc_fwd_port,
|
|
{ "Port", "bvlc.fwd_port",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"FWD Port", HFILL }
|
|
},
|
|
{ &hf_bvlc_orig_source_addr,
|
|
{ "IP", "bvlc.orig_source_addr",
|
|
FT_IPv6, BASE_NONE, NULL, 0,
|
|
"ORIG IP", HFILL }
|
|
},
|
|
{ &hf_bvlc_orig_source_port,
|
|
{ "Port", "bvlc.orig_source_port",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"ORIG Port", HFILL }
|
|
},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_bvlc,
|
|
&ett_bdt,
|
|
&ett_fdt,
|
|
};
|
|
|
|
|
|
proto_bvlc = proto_register_protocol("BACnet Virtual Link Control", "BVLC", "bvlc");
|
|
|
|
proto_register_field_array(proto_bvlc, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
bvlc_handle = register_dissector("bvlc", dissect_bvlc, proto_bvlc);
|
|
|
|
bvlc_dissector_table = register_dissector_table("bvlc.function", "BVLC Function", proto_bvlc, FT_UINT8, BASE_HEX);
|
|
bvlc_ipv6_dissector_table = register_dissector_table("bvlc.function_ipv6", "BVLC Function IPV6", proto_bvlc, FT_UINT8, BASE_HEX);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_bvlc(void)
|
|
{
|
|
dissector_add_uint_with_preference("udp.port", BVLC_UDP_PORT, bvlc_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|