666 lines
19 KiB
C
666 lines
19 KiB
C
/* packet-bvlc.c
|
|
* Routines for BACnet/IP (BVLL, BVLC) dissection
|
|
* Copyright 2001, Hartmut Mueller <hartmut@abmlinux.org>, FH Dortmund
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* Copied from README.developer,v 1.23
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <epan/packet.h>
|
|
#include "packet-bacnet.h"
|
|
|
|
void proto_register_bvlc(void);
|
|
void proto_reg_handoff_bvlc(void);
|
|
|
|
#define BVLC_UDP_PORT 0xBAC0
|
|
|
|
/* Network Layer Wrapper Control Information */
|
|
#define BAC_WRAPPER_CONTROL_NET 0x80
|
|
#define BAC_WRAPPER_MSG_ENCRYPED 0x40
|
|
#define BAC_WRAPPER_RESERVED 0x20
|
|
#define BAC_WRAPPER_AUTHD_PRESENT 0x10
|
|
#define BAC_WRAPPER_DO_NOT_UNWRAP 0x08
|
|
#define BAC_WRAPPER_DO_NOT_DECRPT 0x04
|
|
#define BAC_WRAPPER_NO_TRUST_SRC 0x02
|
|
#define BAC_WRAPPER_SECURE_BY_RTR 0x01
|
|
|
|
static int proto_bvlc = -1;
|
|
static int hf_bvlc_type = -1;
|
|
static int hf_bvlc_function = -1;
|
|
static int hf_bvlc_ipv6_function = -1;
|
|
static int hf_bvlc_length = -1;
|
|
static int hf_bvlc_result_ip4 = -1;
|
|
static int hf_bvlc_result_ip6 = -1;
|
|
static int hf_bvlc_bdt_ip = -1;
|
|
static int hf_bvlc_bdt_mask = -1;
|
|
static int hf_bvlc_bdt_port = -1;
|
|
static int hf_bvlc_reg_ttl = -1;
|
|
static int hf_bvlc_fdt_ip = -1;
|
|
static int hf_bvlc_fdt_ipv6 = -1;
|
|
static int hf_bvlc_fdt_port = -1;
|
|
static int hf_bvlc_fdt_ttl = -1;
|
|
static int hf_bvlc_fdt_timeout = -1;
|
|
static int hf_bvlc_fwd_ip = -1;
|
|
static int hf_bvlc_fwd_port = -1;
|
|
static int hf_bvlc_virt_source = -1;
|
|
static int hf_bvlc_virt_dest = -1;
|
|
static int hf_bvlc_orig_source_addr = -1;
|
|
static int hf_bvlc_orig_source_port = -1;
|
|
|
|
static dissector_table_t bvlc_dissector_table;
|
|
static dissector_table_t bvlc_ipv6_dissector_table;
|
|
static dissector_handle_t bvlc_handle = NULL;
|
|
|
|
static const value_string bvlc_function_names[] = {
|
|
{ 0x00, "BVLC-Result", },
|
|
{ 0x01, "Write-Broadcast-Distribution-Table", },
|
|
{ 0x02, "Read-Broadcast-Distribution-Table", },
|
|
{ 0x03, "Read-Broadcast-Distribution-Table-Ack", },
|
|
{ 0x04, "Forwarded-NPDU", },
|
|
{ 0x05, "Register-Foreign-Device", },
|
|
{ 0x06, "Read-Foreign-Device-Table", },
|
|
{ 0x07, "Read-Foreign-Device-Table-Ack", },
|
|
{ 0x08, "Delete-Foreign-Device-Table-Entry", },
|
|
{ 0x09, "Distribute-Broadcast-To-Network", },
|
|
{ 0x0a, "Original-Unicast-NPDU", },
|
|
{ 0x0b, "Original-Broadcast-NPDU" },
|
|
{ 0x0c, "Secured-BVLL" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string bvlc_result_names[] = {
|
|
{ 0x00, "Successful completion" },
|
|
{ 0x10, "Write-Broadcast-Distribution-Table NAK" },
|
|
{ 0x20, "Read-Broadcast-Distribution-Table NAK" },
|
|
{ 0x30, "Register-Foreign-Device NAK" },
|
|
{ 0x40, "Read-Foreign-Device-Table NAK" },
|
|
{ 0x50, "Delete-Foreign-Device-Table-Entry NAK" },
|
|
{ 0x60, "Distribute-Broadcast-To-Network NAK" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string bvlc_ipv6_function_names[] = {
|
|
{ 0x00, "BVLC-Result", },
|
|
{ 0x01, "Original-Unicast-NPDU", },
|
|
{ 0x02, "Original-Broadcast-NPDU", },
|
|
{ 0x03, "Address-Resolution", },
|
|
{ 0x04, "Forwarded-Address-Resolution", },
|
|
{ 0x05, "Address-Resolution-ACK", },
|
|
{ 0x06, "Virtual-Address-Resolution", },
|
|
{ 0x07, "Virtual-Address-Resolution-ACK", },
|
|
{ 0x08, "Forwarded-NPDU", },
|
|
{ 0x09, "Register-Foreign-Device", },
|
|
{ 0x0A, "Delete-Foreign-Device-Table-Entry", },
|
|
{ 0x0B, "Secure-BVLL", },
|
|
{ 0x0C, "Distribute-Broadcast-To-Network", },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string bvlc_ipv6_result_names[] = {
|
|
{ 0x00, "Successful completion" },
|
|
{ 0x30, "Address-Resolution NAK" },
|
|
{ 0x60, "Virtual-Address-Resolution NAK" },
|
|
{ 0x90, "Register-Foreign-Device NAK" },
|
|
{ 0xA0, "Delete-Foreign-Device-Table-Entry NAK" },
|
|
{ 0xC0, "Distribute-Broadcast-To-Network NAK" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static gint ett_bvlc = -1;
|
|
static gint ett_bdt = -1;
|
|
static gint ett_fdt = -1;
|
|
|
|
#define BACNET_IP_ANNEX_J 0x81
|
|
#define BACNET_IPV6_ANNEX_U 0x82
|
|
|
|
static const value_string bvlc_types[] = {
|
|
{ BACNET_IP_ANNEX_J, "BACnet/IP (Annex J)" },
|
|
{ BACNET_IPV6_ANNEX_U, "BACnet/IPV6 (Annex U)" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static int
|
|
dissect_ipv4_bvlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
|
|
{
|
|
|
|
proto_item *ti;
|
|
proto_item *ti_bdt;
|
|
proto_item *ti_fdt;
|
|
proto_tree *bvlc_tree;
|
|
proto_tree *bdt_tree; /* Broadcast Distribution Table */
|
|
proto_tree *fdt_tree; /* Foreign Device Table */
|
|
|
|
gint offset;
|
|
guint8 bvlc_type;
|
|
guint8 bvlc_function;
|
|
guint16 bvlc_length;
|
|
guint16 packet_length;
|
|
guint npdu_length;
|
|
guint length_remaining;
|
|
tvbuff_t *next_tvb;
|
|
|
|
offset = 0;
|
|
|
|
bvlc_type = tvb_get_guint8(tvb, offset);
|
|
bvlc_function = tvb_get_guint8(tvb, offset + 1);
|
|
packet_length = tvb_get_ntohs(tvb, offset + 2);
|
|
length_remaining = tvb_reported_length_remaining(tvb, offset);
|
|
|
|
if (bvlc_function > 0x08) {
|
|
/* We have a constant header length of BVLC of 4 in every
|
|
* BVLC-packet forewarding an NPDU. Beware: Changes in the
|
|
* BACnet-IP-standard may break this.
|
|
*/
|
|
bvlc_length = 4;
|
|
} else if (bvlc_function == 0x04) {
|
|
/* 4 Bytes + 6 Bytes for B/IP Address of Originating Device */
|
|
bvlc_length = 10;
|
|
} else {
|
|
/* BVLC-packets with function below 0x09 contain
|
|
* routing-level data (e.g. Broadcast Distribution)
|
|
* but no NPDU for BACnet, so bvlc_length goes up to the end
|
|
* of the captured frame.
|
|
*/
|
|
bvlc_length = packet_length;
|
|
}
|
|
|
|
if (bvlc_length < 4 || bvlc_length > packet_length) {
|
|
return 0; /* reject */
|
|
}
|
|
|
|
ti = proto_tree_add_item(tree, proto_bvlc, tvb, 0, bvlc_length, ENC_NA);
|
|
bvlc_tree = proto_item_add_subtree(ti, ett_bvlc);
|
|
proto_tree_add_uint(bvlc_tree, hf_bvlc_type, tvb, offset, 1,
|
|
bvlc_type);
|
|
offset++;
|
|
proto_tree_add_uint(bvlc_tree, hf_bvlc_function, tvb,
|
|
offset, 1, bvlc_function);
|
|
offset++;
|
|
if (length_remaining != packet_length)
|
|
proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset,
|
|
2, bvlc_length,
|
|
"%d of %d bytes (invalid length - expected %d bytes)",
|
|
bvlc_length, packet_length, length_remaining);
|
|
else
|
|
proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset,
|
|
2, bvlc_length, "%d of %d bytes BACnet packet length",
|
|
bvlc_length, packet_length);
|
|
offset += 2;
|
|
switch (bvlc_function) {
|
|
case 0x00: /* BVLC-Result */
|
|
/* I don't know why the result code is encoded in 4 nibbles,
|
|
* but only using one: 0x00r0. Shifting left 4 bits.
|
|
*/
|
|
/* We should bitmask the result correctly when we have a
|
|
* packet to dissect, see README.developer, 1.6.2, FID */
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_result_ip4, tvb,
|
|
offset, 2, ENC_BIG_ENDIAN);
|
|
/*offset += 2;*/
|
|
break;
|
|
case 0x01: /* Write-Broadcast-Distribution-Table */
|
|
case 0x03: /* Read-Broadcast-Distribution-Table-Ack */
|
|
/* List of BDT Entries: N*10-octet */
|
|
ti_bdt = proto_tree_add_item(bvlc_tree, proto_bvlc, tvb,
|
|
offset, bvlc_length-4, ENC_NA);
|
|
bdt_tree = proto_item_add_subtree(ti_bdt, ett_bdt);
|
|
/* List of BDT Entries: N*10-octet */
|
|
while ((bvlc_length - offset) > 9) {
|
|
proto_tree_add_item(bdt_tree, hf_bvlc_bdt_ip,
|
|
tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
proto_tree_add_item(bdt_tree, hf_bvlc_bdt_port,
|
|
tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
proto_tree_add_item(bdt_tree,
|
|
hf_bvlc_bdt_mask, tvb, offset, 4,
|
|
ENC_NA);
|
|
offset += 4;
|
|
}
|
|
/* We check this if we get a BDT-packet somewhere */
|
|
break;
|
|
case 0x02: /* Read-Broadcast-Distribution-Table */
|
|
/* nothing to do here */
|
|
break;
|
|
case 0x05: /* Register-Foreign-Device */
|
|
/* Time-to-Live 2-octets T, Time-to-Live T, in seconds */
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_reg_ttl,
|
|
tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
/*offset += 2;*/
|
|
break;
|
|
case 0x06: /* Read-Foreign-Device-Table */
|
|
/* nothing to do here */
|
|
break;
|
|
case 0x07: /* Read-Foreign-Device-Table-Ack */
|
|
/* List of FDT Entries: N*10-octet */
|
|
/* N indicates the number of entries in the FDT whose
|
|
* contents are being returned. Each returned entry
|
|
* consists of the 6-octet B/IP address of the registrant;
|
|
* the 2-octet Time-to-Live value supplied at the time of
|
|
* registration; and a 2-octet value representing the
|
|
* number of seconds remaining before the BBMD will purge
|
|
* the registrant's FDT entry if no re-registration occurs.
|
|
*/
|
|
ti_fdt = proto_tree_add_item(bvlc_tree, proto_bvlc, tvb,
|
|
offset, bvlc_length -4, ENC_NA);
|
|
fdt_tree = proto_item_add_subtree(ti_fdt, ett_fdt);
|
|
/* List of FDT Entries: N*10-octet */
|
|
while ((bvlc_length - offset) > 9) {
|
|
proto_tree_add_item(fdt_tree, hf_bvlc_fdt_ip,
|
|
tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
proto_tree_add_item(fdt_tree, hf_bvlc_fdt_port,
|
|
tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
proto_tree_add_item(fdt_tree,
|
|
hf_bvlc_fdt_ttl, tvb, offset, 2,
|
|
ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
proto_tree_add_item(fdt_tree,
|
|
hf_bvlc_fdt_timeout, tvb, offset, 2,
|
|
ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
}
|
|
/* We check this if we get a FDT-packet somewhere */
|
|
break;
|
|
case 0x08: /* Delete-Foreign-Device-Table-Entry */
|
|
/* FDT Entry: 6-octets */
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_ip,
|
|
tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_fdt_port,
|
|
tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
/*offset += 2;*/
|
|
break;
|
|
case 0x0C: /* 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_ipv4_bvlc(tvb, pinfo, tree, data);
|
|
break;
|
|
/* We check this if we get a FDT-packet somewhere */
|
|
case 0x04: /* Forwarded-NPDU
|
|
* Why is this 0x04? It would have been a better
|
|
* idea to append all forewarded NPDUs at the
|
|
* end of the function table in the B/IP-standard!
|
|
*/
|
|
/* proto_tree_add_bytes_format(); */
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_fwd_ip,
|
|
tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_fwd_port,
|
|
tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
/*offset += 2;*/
|
|
break;
|
|
default:
|
|
/* Distribute-Broadcast-To-Network
|
|
* Original-Unicast-NPDU
|
|
* Original-Broadcast-NPDU
|
|
* Going to the next dissector...
|
|
*/
|
|
break;
|
|
}
|
|
|
|
/* Ok, no routing information BVLC packet. Dissect as
|
|
* BACnet NPDU
|
|
*/
|
|
npdu_length = packet_length - bvlc_length;
|
|
next_tvb = tvb_new_subset_length_caplen(tvb, bvlc_length, -1, npdu_length);
|
|
/* Code from Guy Harris */
|
|
if (!dissector_try_uint(bvlc_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_ipv6_bvlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *bvlc_tree;
|
|
|
|
gint offset;
|
|
guint8 bvlc_type;
|
|
guint8 bvlc_function;
|
|
guint16 bvlc_length = 0;
|
|
guint16 packet_length;
|
|
guint npdu_length;
|
|
guint length_remaining;
|
|
tvbuff_t *next_tvb;
|
|
|
|
offset = 0;
|
|
|
|
bvlc_type = tvb_get_guint8(tvb, offset);
|
|
bvlc_function = tvb_get_guint8(tvb, offset + 1);
|
|
packet_length = tvb_get_ntohs(tvb, offset + 2);
|
|
length_remaining = tvb_reported_length_remaining(tvb, offset);
|
|
|
|
switch (bvlc_function) {
|
|
case 0x00:
|
|
case 0x09:
|
|
bvlc_length = 9;
|
|
break;
|
|
case 0x01:
|
|
bvlc_length = 10;
|
|
break;
|
|
case 0x02:
|
|
case 0x06:
|
|
case 0x0C:
|
|
bvlc_length = 7;
|
|
break;
|
|
case 0x03:
|
|
case 0x05:
|
|
case 0x07:
|
|
bvlc_length = 10;
|
|
break;
|
|
case 0x04:
|
|
bvlc_length = 28;
|
|
break;
|
|
case 0x08:
|
|
case 0x0A:
|
|
bvlc_length = 25;
|
|
break;
|
|
case 0x0B:
|
|
bvlc_length = 4;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (bvlc_length > packet_length) {
|
|
return 0; /* reject */
|
|
}
|
|
|
|
ti = proto_tree_add_item(tree, proto_bvlc, tvb, 0,
|
|
bvlc_length, ENC_NA);
|
|
bvlc_tree = proto_item_add_subtree(ti, ett_bvlc);
|
|
/* add the BVLC type */
|
|
proto_tree_add_uint(bvlc_tree, hf_bvlc_type, tvb, offset, 1,
|
|
bvlc_type);
|
|
offset++;
|
|
/* add the BVLC function */
|
|
proto_tree_add_uint(bvlc_tree, hf_bvlc_ipv6_function, tvb,
|
|
offset, 1, bvlc_function);
|
|
offset++;
|
|
/* add the length information */
|
|
if (length_remaining != packet_length)
|
|
proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset,
|
|
2, bvlc_length,
|
|
"%d of %d bytes (invalid length - expected %d bytes)",
|
|
bvlc_length, packet_length, length_remaining);
|
|
else
|
|
proto_tree_add_uint_format_value(bvlc_tree, hf_bvlc_length, tvb, offset,
|
|
2, bvlc_length,
|
|
"%d of %d bytes BACnet packet length",
|
|
bvlc_length, packet_length);
|
|
offset += 2;
|
|
|
|
/* add the optional present virtual source address */
|
|
if (bvlc_function != 0x0B) {
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_virt_source, tvb, offset,
|
|
3, ENC_BIG_ENDIAN);
|
|
offset += 3;
|
|
}
|
|
|
|
/* handle additional function parameters */
|
|
switch (bvlc_function) {
|
|
case 0x00: /* BVLC-Result */
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_result_ip6, tvb,
|
|
offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
break;
|
|
case 0x01: /* Original-Unicast-NPDU */
|
|
case 0x03: /* Address-Resolution */
|
|
case 0x05: /* Address-Resolution-ACK */
|
|
case 0x07: /* Virtual-Address-Resolution-ACK */
|
|
proto_tree_add_item(bvlc_tree, hf_bvlc_virt_dest, tvb, offset,
|
|
3, ENC_BIG_ENDIAN);
|
|
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 - https://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:
|
|
*/
|