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[r3078] Added buffer size to COV handler function parameters.

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This commit is contained in:
Steve Karg 2017-01-01 06:07:10 +01:00 committed by Patrick Grimm
parent fd9037424d
commit 85e3109f58
5 changed files with 59 additions and 14 deletions
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4
demo/handler/h_cov.c
View File

@ -495,14 +495,14 @@ static bool cov_send_request(
cov_subscription->invokeID = invoke_id;
len =
ccov_notify_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
invoke_id, &cov_data);
sizeof(Handler_Transmit_Buffer) - pdu_len, invoke_id, &cov_data);
} else {
goto COV_FAILED;
}
} else {
len =
ucov_notify_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
&cov_data);
sizeof(Handler_Transmit_Buffer) - pdu_len, &cov_data);
}
pdu_len += len;
if (cov_subscription->flag.issueConfirmedNotifications) {

27
demo/handler/s_cov.c
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@ -44,8 +44,19 @@
/** @file s_cov.c Send a Change of Value (COV) update or a Subscribe COV request. */
/** Encodes an Unconfirmed COV Notification.
* @ingroup DSCOV
*
* @param buffer [in,out] The buffer to build the message in for sending.
* @param buffer_len [in] Number of bytes in the buffer
* @param dest [in] Destination address
* @param npdu_data [in] Network Layer information
* @param cov_data [in] The COV update information to be encoded.
* @return Size of the message sent (bytes), or a negative value on error.
*/
int ucov_notify_encode_pdu(
uint8_t * buffer,
unsigned buffer_len,
BACNET_ADDRESS * dest,
BACNET_NPDU_DATA * npdu_data,
BACNET_COV_DATA * cov_data)
@ -62,8 +73,13 @@ int ucov_notify_encode_pdu(
pdu_len = npdu_encode_pdu(&buffer[0], dest, &my_address, npdu_data);
/* encode the APDU portion of the packet */
len = ucov_notify_encode_apdu(&buffer[pdu_len], cov_data);
pdu_len += len;
len = ucov_notify_encode_apdu(&buffer[pdu_len],
buffer_len - pdu_len, cov_data);
if (len) {
pdu_len += len;
} else {
pdu_len = 0;
}
return pdu_len;
}
@ -72,11 +88,13 @@ int ucov_notify_encode_pdu(
* @ingroup DSCOV
*
* @param buffer [in,out] The buffer to build the message in for sending.
* @param buffer_len [in] Number of bytes in the buffer
* @param cov_data [in] The COV update information to be encoded.
* @return Size of the message sent (bytes), or a negative value on error.
*/
int Send_UCOV_Notify(
uint8_t * buffer,
unsigned buffer_len,
BACNET_COV_DATA * cov_data)
{
int pdu_len = 0;
@ -84,7 +102,8 @@ int Send_UCOV_Notify(
int bytes_sent = 0;
BACNET_NPDU_DATA npdu_data;
pdu_len = ucov_notify_encode_pdu(buffer, &dest, &npdu_data, cov_data);
pdu_len = ucov_notify_encode_pdu(buffer, buffer_len, &dest, &npdu_data,
cov_data);
bytes_sent = datalink_send_pdu(&dest, &npdu_data, &buffer[0], pdu_len);
return bytes_sent;
@ -130,7 +149,7 @@ uint8_t Send_COV_Subscribe(
/* encode the APDU portion of the packet */
len =
cov_subscribe_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
invoke_id, cov_data);
sizeof(Handler_Transmit_Buffer)-pdu_len, invoke_id, cov_data);
pdu_len += len;
/* will it fit in the sender?
note: if there is a bottleneck router in between

3
demo/ucov/main.c
View File

@ -193,7 +193,8 @@ int main(
Init_Service_Handlers();
dlenv_init();
atexit(datalink_cleanup);
Send_UCOV_Notify(&Handler_Transmit_Buffer[0], &cov_data);
Send_UCOV_Notify(&Handler_Transmit_Buffer[0],
sizeof(Handler_Transmit_Buffer), &cov_data);
return 0;
}

7
include/cov.h
View File

@ -58,6 +58,7 @@ extern "C" {
int ucov_notify_encode_apdu(
uint8_t * apdu,
unsigned max_apdu_len,
BACNET_COV_DATA * data);
int ucov_notify_decode_apdu(
@ -66,11 +67,13 @@ extern "C" {
BACNET_COV_DATA * data);
int ucov_notify_send(
uint8_t * buffer,
uint8_t * apdu,
unsigned max_apdu_len,
BACNET_COV_DATA * data);
int ccov_notify_encode_apdu(
uint8_t * apdu,
unsigned max_apdu_len,
uint8_t invoke_id,
BACNET_COV_DATA * data);
@ -93,6 +96,7 @@ extern "C" {
int cov_subscribe_property_encode_apdu(
uint8_t * apdu,
unsigned max_apdu_len,
uint8_t invoke_id,
BACNET_SUBSCRIBE_COV_DATA * data);
@ -103,6 +107,7 @@ extern "C" {
int cov_subscribe_encode_apdu(
uint8_t * apdu,
unsigned max_apdu_len,
uint8_t invoke_id,
BACNET_SUBSCRIBE_COV_DATA * data);

32
src/cov.c
View File

@ -36,6 +36,8 @@
#include "bacdcode.h"
#include "bacdef.h"
#include "bacapp.h"
#include "memcopy.h"
/* me! */
#include "cov.h"
/** @file cov.c Encode/Decode Change of Value (COV) services */
@ -48,6 +50,7 @@ Unconfirmed COV Notification
*/
static int notify_encode_apdu(
uint8_t * apdu,
unsigned max_apdu_len,
BACNET_COV_DATA * data)
{
int len = 0; /* length of each encoding */
@ -131,39 +134,53 @@ static int notify_encode_apdu(
int ccov_notify_encode_apdu(
uint8_t * apdu,
unsigned max_apdu_len,
uint8_t invoke_id,
BACNET_COV_DATA * data)
{
int len = 0; /* length of each encoding */
int apdu_len = 0; /* total length of the apdu, return value */
int apdu_len = BACNET_STATUS_ERROR; /* return value */
if (apdu) {
if (apdu && data && memcopylen(0, max_apdu_len, 4)) {
apdu[0] = PDU_TYPE_CONFIRMED_SERVICE_REQUEST;
apdu[1] = encode_max_segs_max_apdu(0, MAX_APDU);
apdu[2] = invoke_id;
apdu[3] = SERVICE_CONFIRMED_COV_NOTIFICATION;
apdu_len = 4;
len = notify_encode_apdu(&apdu[apdu_len], data);
len = notify_encode_apdu(&apdu[apdu_len],
max_apdu_len-apdu_len, data);
if (len < 0) {
/* return the error */
apdu_len = len;
} else {
apdu_len += len;
}
}
return apdu_len;
}
int ucov_notify_encode_apdu(
uint8_t * apdu,
unsigned max_apdu_len,
BACNET_COV_DATA * data)
{
int len = 0; /* length of each encoding */
int apdu_len = 0; /* total length of the apdu, return value */
int apdu_len = BACNET_STATUS_ERROR; /* return value */
if (apdu && data) {
if (apdu && data && memcopylen(0, max_apdu_len, 2)) {
apdu[0] = PDU_TYPE_UNCONFIRMED_SERVICE_REQUEST;
apdu[1] = SERVICE_UNCONFIRMED_COV_NOTIFICATION; /* service choice */
apdu_len = 2;
len = notify_encode_apdu(&apdu[apdu_len], data);
len = notify_encode_apdu(&apdu[apdu_len],
max_apdu_len-apdu_len, data);
if (len < 0) {
/* return the error */
apdu_len = len;
} else {
apdu_len += len;
}
}
return apdu_len;
}
@ -341,6 +358,7 @@ SubscribeCOV-Request ::= SEQUENCE {
int cov_subscribe_encode_apdu(
uint8_t * apdu,
unsigned max_apdu_len,
uint8_t invoke_id,
BACNET_SUBSCRIBE_COV_DATA * data)
{
@ -475,6 +493,7 @@ BACnetPropertyReference ::= SEQUENCE {
int cov_subscribe_property_encode_apdu(
uint8_t * apdu,
unsigned max_apdu_len,
uint8_t invoke_id,
BACNET_SUBSCRIBE_COV_DATA * data)
{
@ -801,6 +820,7 @@ int cov_subscribe_property_decode_apdu(
return len;
}
/* dummy function stubs */
void testCOVNotifyData(
Test * pTest,
BACNET_COV_DATA * data,