/** Handler for a ReadPropertyMultiple Service request.
* @ingroup DSRPM
* This handler will be invoked by apdu_handler() if it has been enabled
* by a call to apdu_set_confirmed_handler().
* This handler builds a response packet, which is
* - an Abort if
* - the message is segmented
* - if decoding fails
* - if the response would be too large
* - the result from each included read request, if it succeeds
* - an Error if processing fails for all, or individual errors if only some fail,
* or there isn't enough room in the APDU to fit the data.
*
* @param service_request [in] The contents of the service request.
* @param service_len [in] The length of the service_request.
* @param src [in] BACNET_ADDRESS of the source of the message
* @param service_data [in] The BACNET_CONFIRMED_SERVICE_DATA information
* decoded from the APDU header of this message.
*/
void handler_read_property_multiple(
uint8_t * service_request,
uint16_t service_len,
BACNET_ADDRESS * src,
BACNET_CONFIRMED_SERVICE_DATA * service_data)
{
int len = 0;
uint16_t copy_len = 0;
uint16_t decode_len = 0;
int pdu_len = 0;
BACNET_NPDU_DATA npdu_data;
int bytes_sent;
BACNET_ADDRESS my_address;
BACNET_RPM_DATA rpmdata;
int apdu_len = 0;
int npdu_len = 0;
int error = 0;
/* jps_debug - see if we are utilizing all the buffer */
/* memset(&Handler_Transmit_Buffer[0], 0xff, sizeof(Handler_Transmit_Buffer)); */
/* encode the NPDU portion of the packet */
datalink_get_my_address(&my_address);
npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
npdu_len =
npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address,
&npdu_data);
if (service_data->segmented_message) {
rpmdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
error = BACNET_STATUS_ABORT;
#if PRINT_ENABLED
fprintf(stderr, "RPM: Segmented message. Sending Abort!\r\n");
#endif
goto RPM_FAILURE;
}
/* decode apdu request & encode apdu reply
encode complex ack, invoke id, service choice */
apdu_len =
rpm_ack_encode_apdu_init(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id);
for (;;) {
/* Start by looking for an object ID */
len =
rpm_decode_object_id(&service_request[decode_len],
service_len - decode_len, &rpmdata);
if (len >= 0) {
/* Got one so skip to next stage */
decode_len += len;
} else {
/* bad encoding - skip to error/reject/abort handling */
#if PRINT_ENABLED
fprintf(stderr, "RPM: Bad Encoding.\n");
#endif
error = len;
goto RPM_FAILURE;
}
/* Test for case of indefinite Device object instance */
if ((rpmdata.object_type == OBJECT_DEVICE) &&
(rpmdata.object_instance == BACNET_MAX_INSTANCE)) {
rpmdata.object_instance = Device_Object_Instance_Number();
}
/* Stick this object id into the reply - if it will fit */
len = rpm_ack_encode_apdu_object_begin(&Temp_Buf[0], &rpmdata);
copy_len =
memcopy(&Handler_Transmit_Buffer[npdu_len], &Temp_Buf[0], apdu_len,
len, MAX_APDU);
if (copy_len == 0) {
#if PRINT_ENABLED
fprintf(stderr, "RPM: Response too big!\r\n");
#endif
rpmdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
error = BACNET_STATUS_ABORT;
goto RPM_FAILURE;
}
apdu_len += copy_len;
/* do each property of this object of the RPM request */
for (;;) {
/* Fetch a property */
len =
rpm_decode_object_property(&service_request[decode_len],
service_len - decode_len, &rpmdata);
if (len < 0) {
/* bad encoding - skip to error/reject/abort handling */
#if PRINT_ENABLED
fprintf(stderr, "RPM: Bad Encoding.\n");
#endif
error = len;
goto RPM_FAILURE;
}
decode_len += len;
/* handle the special properties */
if ((rpmdata.object_property == PROP_ALL) ||
(rpmdata.object_property == PROP_REQUIRED) ||
(rpmdata.object_property == PROP_OPTIONAL)) {
struct special_property_list_t property_list;
unsigned property_count = 0;
unsigned index = 0;
BACNET_PROPERTY_ID special_object_property;
if (rpmdata.array_index != BACNET_ARRAY_ALL) {
/* No array index options for this special property.
Encode error for this object property response */
len =
rpm_ack_encode_apdu_object_property(&Temp_Buf[0],
rpmdata.object_property, rpmdata.array_index);
copy_len =
memcopy(&Handler_Transmit_Buffer[npdu_len],
&Temp_Buf[0], apdu_len, len, MAX_APDU);
if (copy_len == 0) {
#if PRINT_ENABLED
fprintf(stderr,
"RPM: Too full to encode property!\r\n");
#endif
rpmdata.error_code =
ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
error = BACNET_STATUS_ABORT;
goto RPM_FAILURE;
}
apdu_len += len;
len =
rpm_ack_encode_apdu_object_property_error(&Temp_Buf[0],
ERROR_CLASS_PROPERTY,
ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY);
copy_len =
memcopy(&Handler_Transmit_Buffer[npdu_len],
&Temp_Buf[0], apdu_len, len, MAX_APDU);
if (copy_len == 0) {
#if PRINT_ENABLED
fprintf(stderr, "RPM: Too full to encode error!\r\n");
#endif
rpmdata.error_code =
ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
error = BACNET_STATUS_ABORT;
goto RPM_FAILURE;
}
apdu_len += len;
} else {
special_object_property = rpmdata.object_property;
Device_Objects_Property_List(rpmdata.object_type,
&property_list);
property_count =
RPM_Object_Property_Count(&property_list,
special_object_property);
if (property_count == 0) {
/* handle the error code - but use the special property */
len =
RPM_Encode_Property(&Handler_Transmit_Buffer
[npdu_len], (uint16_t) apdu_len, MAX_APDU,
&rpmdata);
if (len > 0) {
apdu_len += len;
} else {
#if PRINT_ENABLED
fprintf(stderr,
"RPM: Too full for special property!\r\n");
#endif
error = len;
goto RPM_FAILURE;
}
} else {
for (index = 0; index < property_count; index++) {
rpmdata.object_property =
RPM_Object_Property(&property_list,
special_object_property, index);
len =
RPM_Encode_Property(&Handler_Transmit_Buffer
[npdu_len], (uint16_t) apdu_len, MAX_APDU,
&rpmdata);
if (len > 0) {
apdu_len += len;
} else {
#if PRINT_ENABLED
fprintf(stderr,
"RPM: Too full for property!\r\n");
#endif
error = len;
goto RPM_FAILURE;
}
}
}
}
} else {
/* handle an individual property */
len =
RPM_Encode_Property(&Handler_Transmit_Buffer[npdu_len],
(uint16_t) apdu_len, MAX_APDU, &rpmdata);
if (len > 0) {
apdu_len += len;
} else {
#if PRINT_ENABLED
fprintf(stderr,
"RPM: Too full for individual property!\r\n");
#endif
error = len;
goto RPM_FAILURE;
}
}
if (decode_is_closing_tag_number(&service_request[decode_len], 1)) {
/* Reached end of property list so cap the result list */
decode_len++;
len = rpm_ack_encode_apdu_object_end(&Temp_Buf[0]);
copy_len =
memcopy(&Handler_Transmit_Buffer[npdu_len], &Temp_Buf[0],
apdu_len, len, MAX_APDU);
if (copy_len == 0) {
#if PRINT_ENABLED
fprintf(stderr, "RPM: Too full to encode object end!\r\n");
#endif
rpmdata.error_code =
ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
error = BACNET_STATUS_ABORT;
goto RPM_FAILURE;
} else {
apdu_len += copy_len;
}
break; /* finished with this property list */
}
}
if (decode_len >= service_len) {
/* Reached the end so finish up */
break;
}
}
if (apdu_len > service_data->max_resp) {
/* too big for the sender - send an abort */
rpmdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
error = BACNET_STATUS_ABORT;
#if PRINT_ENABLED
fprintf(stderr, "RPM: Message too large. Sending Abort!\n");
#endif
goto RPM_FAILURE;
}
RPM_FAILURE:
if (error) {
if (error == BACNET_STATUS_ABORT) {
apdu_len =
abort_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id,
abort_convert_error_code(rpmdata.error_code), true);
#if PRINT_ENABLED
fprintf(stderr, "RPM: Sending Abort!\n");
#endif
} else if (error == BACNET_STATUS_ERROR) {
apdu_len =
bacerror_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id, SERVICE_CONFIRMED_READ_PROP_MULTIPLE,
rpmdata.error_class, rpmdata.error_code);
#if PRINT_ENABLED
fprintf(stderr, "RPM: Sending Error!\n");
#endif
} else if (error == BACNET_STATUS_REJECT) {
apdu_len =
reject_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id,
reject_convert_error_code(rpmdata.error_code));
#if PRINT_ENABLED
fprintf(stderr, "RPM: Sending Reject!\n");
#endif
}
}
pdu_len = apdu_len + npdu_len;
bytes_sent =
datalink_send_pdu(src, &npdu_data, &Handler_Transmit_Buffer[0],
pdu_len);
#if PRINT_ENABLED
if (bytes_sent <= 0) {
fprintf(stderr, "RPM: Failed to send PDU (%s)!\n", strerror(errno));
}
#else
bytes_sent = bytes_sent;
#endif
}
/** Handler for a COV Subscribe Service request.
* @ingroup DSCOV
* This handler will be invoked by apdu_handler() if it has been enabled
* by a call to apdu_set_confirmed_handler().
* This handler builds a response packet, which is
* - an Abort if
* - the message is segmented
* - if decoding fails
* - an ACK, if cov_subscribe() succeeds
* - an Error if cov_subscribe() fails
*
* @param service_request [in] The contents of the service request.
* @param service_len [in] The length of the service_request.
* @param src [in] BACNET_ADDRESS of the source of the message
* @param service_data [in] The BACNET_CONFIRMED_SERVICE_DATA information
* decoded from the APDU header of this message.
*/
void handler_cov_subscribe(
uint8_t * service_request,
uint16_t service_len,
BACNET_ADDRESS * src,
BACNET_CONFIRMED_SERVICE_DATA * service_data)
{
BACNET_SUBSCRIBE_COV_DATA cov_data;
int len = 0;
int pdu_len = 0;
int npdu_len = 0;
int apdu_len = 0;
BACNET_NPDU_DATA npdu_data;
bool success = false;
int bytes_sent = 0;
BACNET_ADDRESS my_address;
bool error = false;
/* initialize a common abort code */
cov_data.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
/* encode the NPDU portion of the packet */
datalink_get_my_address(&my_address);
npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
npdu_len =
npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address,
&npdu_data);
if (service_data->segmented_message) {
/* we don't support segmentation - send an abort */
len = BACNET_STATUS_ABORT;
#if PRINT_ENABLED
fprintf(stderr, "SubscribeCOV: Segmented message. Sending Abort!\n");
#endif
error = true;
goto COV_ABORT;
}
len =
cov_subscribe_decode_service_request(service_request, service_len,
&cov_data);
#if PRINT_ENABLED
if (len <= 0)
fprintf(stderr, "SubscribeCOV: Unable to decode Request!\n");
#endif
if (len < 0) {
error = true;
goto COV_ABORT;
}
cov_data.error_class = ERROR_CLASS_OBJECT;
cov_data.error_code = ERROR_CODE_UNKNOWN_OBJECT;
success =
cov_subscribe(src, &cov_data, &cov_data.error_class,
&cov_data.error_code);
if (success) {
apdu_len =
encode_simple_ack(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id, SERVICE_CONFIRMED_SUBSCRIBE_COV);
#if PRINT_ENABLED
fprintf(stderr, "SubscribeCOV: Sending Simple Ack!\n");
#endif
} else {
len = BACNET_STATUS_ERROR;
error = true;
#if PRINT_ENABLED
fprintf(stderr, "SubscribeCOV: Sending Error!\n");
#endif
}
COV_ABORT:
if (error) {
if (len == BACNET_STATUS_ABORT) {
apdu_len =
abort_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id,
abort_convert_error_code(cov_data.error_code), true);
#if PRINT_ENABLED
fprintf(stderr, "SubscribeCOV: Sending Abort!\n");
#endif
} else if (len == BACNET_STATUS_ERROR) {
apdu_len =
bacerror_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id, SERVICE_CONFIRMED_SUBSCRIBE_COV,
cov_data.error_class, cov_data.error_code);
#if PRINT_ENABLED
fprintf(stderr, "SubscribeCOV: Sending Error!\n");
#endif
} else if (len == BACNET_STATUS_REJECT) {
apdu_len =
reject_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id,
reject_convert_error_code(cov_data.error_code));
#if PRINT_ENABLED
fprintf(stderr, "SubscribeCOV: Sending Reject!\n");
#endif
}
}
pdu_len = npdu_len + apdu_len;
bytes_sent =
datalink_send_pdu(src, &npdu_data, &Handler_Transmit_Buffer[0],
pdu_len);
#if PRINT_ENABLED
if (bytes_sent <= 0)
fprintf(stderr, "SubscribeCOV: Failed to send PDU (%s)!\n",
strerror(errno));
#else
bytes_sent = bytes_sent;
#endif
return;
}
/** Handler for a ReadProperty Service request.
* @ingroup DSRP
* This handler will be invoked by apdu_handler() if it has been enabled
* by a call to apdu_set_confirmed_handler().
* This handler builds a response packet, which is
* - an Abort if
* - the message is segmented
* - if decoding fails
* - if the response would be too large
* - the result from Device_Read_Property(), if it succeeds
* - an Error if Device_Read_Property() fails
* or there isn't enough room in the APDU to fit the data.
*
* @param service_request [in] The contents of the service request.
* @param service_len [in] The length of the service_request.
* @param src [in] BACNET_ADDRESS of the source of the message
* @param service_data [in] The BACNET_CONFIRMED_SERVICE_DATA information
* decoded from the APDU header of this message.
*/
void handler_read_property(
uint8_t * service_request,
uint16_t service_len,
BACNET_ADDRESS * src,
BACNET_CONFIRMED_SERVICE_DATA * service_data)
{
BACNET_READ_PROPERTY_DATA rpdata;
int len = 0;
int pdu_len = 0;
int apdu_len = -1;
int npdu_len = -1;
BACNET_NPDU_DATA npdu_data;
bool error = true; /* assume that there is an error */
int bytes_sent = 0;
BACNET_ADDRESS my_address;
/* configure default error code as an abort since it is common */
rpdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
/* encode the NPDU portion of the packet */
datalink_get_my_address(&my_address);
npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
npdu_len =
npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address,
&npdu_data);
if (service_data->segmented_message) {
/* we don't support segmentation - send an abort */
len = BACNET_STATUS_ABORT;
#if PRINT_ENABLED
fprintf(stderr, "RP: Segmented message. Sending Abort!\n");
#endif
goto RP_FAILURE;
}
len = rp_decode_service_request(service_request, service_len, &rpdata);
#if PRINT_ENABLED
if (len <= 0) {
fprintf(stderr, "RP: Unable to decode Request!\n");
}
#endif
if (len < 0) {
/* bad decoding - skip to error/reject/abort handling */
error = true;
#if PRINT_ENABLED
fprintf(stderr, "RP: Bad Encoding.\n");
#endif
goto RP_FAILURE;
}
/* Test for case of indefinite Device object instance */
if ((rpdata.object_type == OBJECT_DEVICE) &&
(rpdata.object_instance == BACNET_MAX_INSTANCE)) {
rpdata.object_instance = Device_Object_Instance_Number();
}
apdu_len =
rp_ack_encode_apdu_init(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id, &rpdata);
/* configure our storage */
rpdata.application_data = &Handler_Transmit_Buffer[npdu_len + apdu_len];
rpdata.application_data_len =
sizeof(Handler_Transmit_Buffer) - (npdu_len + apdu_len);
len = Device_Read_Property(&rpdata);
if (len >= 0) {
apdu_len += len;
len =
rp_ack_encode_apdu_object_property_end(&Handler_Transmit_Buffer
[npdu_len + apdu_len]);
apdu_len += len;
if (apdu_len > service_data->max_resp) {
/* too big for the sender - send an abort
* Setting of error code needed here as read property processing may
* have overriden the default set at start */
rpdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
len = BACNET_STATUS_ABORT;
#if PRINT_ENABLED
fprintf(stderr, "RP: Message too large.\n");
#endif
} else {
#if PRINT_ENABLED
fprintf(stderr, "RP: Sending Ack!\n");
#endif
error = false;
}
} else {
#if PRINT_ENABLED
fprintf(stderr, "RP: Device_Read_Property: ");
if (len == BACNET_STATUS_ABORT) {
fprintf(stderr, "Abort!\n");
} else if (len == BACNET_STATUS_ERROR) {
fprintf(stderr, "Error!\n");
} else if (len == BACNET_STATUS_REJECT) {
fprintf(stderr, "Reject!\n");
} else {
fprintf(stderr, "Unknown Len=%d\n", len);
}
#endif
}
RP_FAILURE:
if (error) {
if (len == BACNET_STATUS_ABORT) {
apdu_len =
abort_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id,
abort_convert_error_code(rpdata.error_code), true);
#if PRINT_ENABLED
fprintf(stderr, "RP: Sending Abort!\n");
#endif
} else if (len == BACNET_STATUS_ERROR) {
apdu_len =
bacerror_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id, SERVICE_CONFIRMED_READ_PROPERTY,
rpdata.error_class, rpdata.error_code);
#if PRINT_ENABLED
fprintf(stderr, "RP: Sending Error!\n");
#endif
} else if (len == BACNET_STATUS_REJECT) {
apdu_len =
reject_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_data->invoke_id,
reject_convert_error_code(rpdata.error_code));
#if PRINT_ENABLED
fprintf(stderr, "RP: Sending Reject!\n");
#endif
}
}
pdu_len = npdu_len + apdu_len;
bytes_sent =
datalink_send_pdu(src, &npdu_data, &Handler_Transmit_Buffer[0],
pdu_len);
#if PRINT_ENABLED
if (bytes_sent <= 0) {
fprintf(stderr, "Failed to send PDU (%s)!\n", strerror(errno));
}
#else
bytes_sent = bytes_sent;
#endif
return;
}
void handler_read_property_ack2(
BACNET_ADDRESS * src,
BACNET_CONFIRMED_SERVICE_ACK_DATA * service_ack_data,
uint8_t * apdu,
uint16_t apdu_len)
{
BACNET_READ_PROPERTY_DATA rpdata;
int len = 0;
int pdu_len = 0;
int npdu_len = -1;
BACNET_NPDU_DATA npdu_data;
bool error = true; /* assume that there is an error */
int bytes_sent = 0;
BACNET_ADDRESS my_address;
fprintf(stderr, "Entering handler_RP2 in h_rp.c.\n");
/* configure default error code as an abort since it is common */
rpdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED;
/* encode the NPDU portion of the packet */
/* returns my IP addr (4 bytes) and port num (2bytes)*/
datalink_get_my_address(&my_address);
//set up NPCI header field npdu_data
npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
npdu_len =
npdu_encode_pdu(&Handler_Transmit_Buffer_ACK[0], src, &my_address,//src!!
&npdu_data);//set up handler transmit buffer by injecting npci/src/dst addr info
if (service_ack_data->segmented_message) {
/* we don't support segmentation - send an abort */
len = BACNET_STATUS_ABORT;
#if PRINT_ENABLED
fprintf(stderr, "RP: Segmented message. Sending Abort!\n");
#endif
goto RP_FAILURE;
}
int i;
for (i = 0; i < apdu_len; ++i){
Handler_Transmit_Buffer_ACK[npdu_len + i] = apdu[i];
}
fprintf(stderr, "Finish copying apdu to ack buffer in h_rp.c.\n");
RP_FAILURE:
if (error) {
if (len == BACNET_STATUS_ABORT) {
apdu_len =
abort_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_ack_data->invoke_id,
abort_convert_error_code(rpdata.error_code), true);
#if PRINT_ENABLED
fprintf(stderr, "RP: Sending Abort!\n");
#endif
} else if (len == BACNET_STATUS_ERROR) {
apdu_len =
bacerror_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_ack_data->invoke_id, SERVICE_CONFIRMED_READ_PROPERTY,
rpdata.error_class, rpdata.error_code);
#if PRINT_ENABLED
fprintf(stderr, "RP: Sending Error!\n");
#endif
} else if (len == BACNET_STATUS_REJECT) {
apdu_len =
reject_encode_apdu(&Handler_Transmit_Buffer[npdu_len],
service_ack_data->invoke_id,
reject_convert_error_code(rpdata.error_code));
#if PRINT_ENABLED
fprintf(stderr, "RP: Sending Reject!\n");
#endif
}
}
pdu_len = npdu_len + apdu_len;
bytes_sent =
datalink_send_pdu(rp_serv_addr, &npdu_data, &Handler_Transmit_Buffer_ACK[0],
pdu_len);
#if PRINT_ENABLED
if (bytes_sent <= 0) {
fprintf(stderr, "Failed to send PDU (%s)!\n", strerror(errno));
}else{
fprintf(stderr, "sent pdu back to server in h_rp.c.\n");
}
#else
bytes_sent = bytes_sent;
#endif
return;
}
