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Renamed bbmd to bvlc as the acronym was more accurate.

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skarg
2006-05-10 13:20:36 +00:00
parent b9599d8296
commit 3cdd44f915
3 changed files with 125 additions and 24 deletions
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bacnet-stack/bvlc.c
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/*####COPYRIGHTBEGIN####
-------------------------------------------
Copyright (C) 2006 Steve Karg
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.
As a special exception, if other files instantiate templates or
use macros or inline functions from this file, or you compile
this file and link it with other works to produce a work based
on this file, this file does not by itself cause the resulting
work to be covered by the GNU General Public License. However
the source code for this file must still be made available in
accordance with section (3) of the GNU General Public License.
This exception does not invalidate any other reasons why a work
based on this file might be covered by the GNU General Public
License.
-------------------------------------------
####COPYRIGHTEND####*/
#include <stdint.h> /* for standard integer types uint8_t etc. */
#include <stdbool.h> /* for the standard bool type. */
#include "bacdcode.h"
#include "bip.h"
#include "net.h" /* custom per port */
/* Handle the BACnet Virtual Link Control (BVLC), which includes:
BACnet Broadcast Management Device,
Broadcast Distribution Table, and
Foreign Device Registration */
int bvlc_encode_bvlc_result(
uint8_t *pdu,
BACNET_BVLC_RESULT result_code)
{
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_RESULT;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 6);
encode_unsigned16(&pdu[4], result_code);
}
return 6;
}
int bvlc_encode_write_bdt_init(
uint8_t *pdu,
unsigned entries)
{
int len = 0;
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_WRITE_BROADCAST_DISTRIBUTION_TABLE;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 4 + entries * 10);
len = 4;
}
return len;
}
int bvlc_encode_address(
uint8_t *pdu,
struct in_addr *address, /* in host format */
uint16_t port)
{
int len = 0;
if (pdu) {
len = encode_unsigned32(&pdu[0], address->s_addr);
len += encode_unsigned16(&pdu[len], port);
}
return len;
}
/* used for both read and write entries */
int bvlc_encode_address_entry(
uint8_t *pdu,
struct in_addr *address,
uint16_t port,
struct in_addr *mask)
{
int len = 0;
if (pdu) {
len = bvlc_encode_address(pdu, address, port);
len += encode_unsigned32(&pdu[len], mask->s_addr);
}
return len;
}
int bvlc_encode_read_bdt(
uint8_t *pdu)
{
int len = 0;
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_READ_BROADCAST_DISTRIBUTION_TABLE;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 4);
len = 4;
}
return len;
}
int bvlc_encode_read_bdt_ack_init(
uint8_t *pdu,
unsigned entries)
{
int len = 0;
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_READ_BROADCAST_DISTRIBUTION_TABLE_ACK;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 4 + entries * 10);
len = 4;
}
return len;
}
int bvlc_encode_forwarded_npdu(
uint8_t *pdu,
BACNET_ADDRESS *src,
uint8_t *npdu,
unsigned npdu_length)
{
int len = 0;
unsigned i; /* for loop counter */
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_FORWARDED_NPDU;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 4+6+npdu_length);
len = 4;
for (i = 0; i < 6; i++) {
pdu[len] = src->adr[i];
len++;
}
for (i = 0; i < npdu_length; i++) {
pdu[len] = npdu[i];
len++;
}
}
return len;
}
int bvlc_encode_register_foreign_device(
uint8_t *pdu,
uint16_t time_to_live_seconds)
{
int len = 0;
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_REGISTER_FOREIGN_DEVICE;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 6);
encode_unsigned16(&pdu[2], time_to_live_seconds);
len = 6;
}
return len;
}
int bvlc_encode_read_fdt(
uint8_t *pdu)
{
int len = 0;
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_READ_FOREIGN_DEVICE_TABLE;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 4);
len = 4;
}
return len;
}
int bvlc_encode_read_fdt_ack_init(
uint8_t *pdu,
unsigned entries)
{
int len = 0;
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_READ_FOREIGN_DEVICE_TABLE_ACK;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 4 + entries * 10);
len = 4;
}
return len;
}
int bvlc_encode_delete_fdt_entry(
uint8_t *pdu,
struct in_addr *address,
uint16_t port)
{
int len = 0;
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_READ_FOREIGN_DEVICE_TABLE;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
encode_unsigned16(&pdu[2], 10);
/* FDT Entry */
encode_unsigned32(&pdu[0], address->s_addr);
encode_unsigned16(&pdu[4], port);
len = 10;
}
return len;
}
int bvlc_encode_distribute_broadcast_to_network(
uint8_t *pdu,
uint8_t *npdu,
unsigned npdu_length)
{
int len = 0; /* return value */
unsigned i; /* for loop counter */
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_FORWARDED_NPDU;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
len = encode_unsigned16(&pdu[2], 4+npdu_length) + 2;
for (i = 0; i < npdu_length; i++) {
pdu[len] = npdu[i];
len++;
}
}
return len;
}
int bvlc_encode_original_unicast_npdu(
uint8_t * pdu,
uint8_t * npdu,
unsigned npdu_length)
{
int len = 0; /* return value */
unsigned i = 0; /* loop counter */
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_ORIGINAL_UNICAST_NPDU;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
len = encode_unsigned16(&pdu[2], 4+npdu_length) + 2;
for (i = 0; i < npdu_length; i++) {
pdu[len] = npdu[i];
len++;
}
}
return len;
}
int bvlc_encode_original_broadcast_npdu(
uint8_t * pdu,
uint8_t * npdu,
unsigned npdu_length)
{
int len = 0; /* return value */
unsigned i = 0; /* loop counter */
if (pdu) {
pdu[0] = BVLL_TYPE_BACNET_IP;
pdu[1] = BVLC_ORIGINAL_BROADCAST_NPDU;
/* The 2-octet BVLC Length field is the length, in octets,
of the entire BVLL message, including the two octets of the
length field itself, most significant octet first. */
len = encode_unsigned16(&pdu[2], 4+npdu_length) + 2;
for (i = 0; i < npdu_length; i++) {
pdu[len] = npdu[i];
len++;
}
}
return len;
}
void bvlc_handler(uint8_t *buf, int len, struct sockaddr_in *sin)
{
int function_type = 0;
if (buf[0] != BVLL_TYPE_BACNET_IP)
return;
function_type = buf[1];
switch (function_type)
{
case BVLC_RESULT:
break;
case BVLC_WRITE_BROADCAST_DISTRIBUTION_TABLE:
break;
case BVLC_READ_BROADCAST_DISTRIBUTION_TABLE:
break;
case BVLC_READ_BROADCAST_DISTRIBUTION_TABLE_ACK:
break;
case BVLC_FORWARDED_NPDU:
break;
case BVLC_REGISTER_FOREIGN_DEVICE:
break;
case BVLC_READ_FOREIGN_DEVICE_TABLE:
break;
case BVLC_READ_FOREIGN_DEVICE_TABLE_ACK:
break;
case BVLC_DELETE_FOREIGN_DEVICE_TABLE_ENTRY:
break;
case BVLC_DISTRIBUTE_BROADCAST_TO_NETWORK:
break;
case BVLC_ORIGINAL_BROADCAST_NPDU:
break;
default:
break;
}
return;
}
#ifdef TEST
#include <assert.h>
#include <string.h>
#include "ctest.h"
void testBVLC(Test * pTest)
{
(void)pTest;
}
#ifdef TEST_BBMD
int main(void)
{
Test *pTest;
bool rc;
pTest = ct_create("BACnet Virtual Link Control", NULL);
/* individual tests */
rc = ct_addTestFunction(pTest, testBVLC);
assert(rc);
/* configure output */
ct_setStream(pTest, stdout);
ct_run(pTest);
(void) ct_report(pTest);
ct_destroy(pTest);
return 0;
}
#endif /* TEST_BBMD */
#endif /* TEST */