int arf_ack_decode_apdu(
uint8_t * apdu,
unsigned apdu_len,
uint8_t * invoke_id,
BACNET_ATOMIC_READ_FILE_DATA * data)
{
int len = 0;
unsigned offset = 0;
if (!apdu)
return -1;
/* optional checking - most likely was already done prior to this call */
if (apdu[0] != PDU_TYPE_COMPLEX_ACK)
return -1;
*invoke_id = apdu[1]; /* invoke id - filled in by net layer */
if (apdu[2] != SERVICE_CONFIRMED_ATOMIC_READ_FILE)
return -1;
offset = 3;
if (apdu_len > offset) {
len =
arf_ack_decode_service_request(&apdu[offset], apdu_len - offset,
data);
}
return len;
}
void handler_atomic_read_file_ack(
uint8_t * service_request,
uint16_t service_len,
BACNET_ADDRESS * src,
BACNET_CONFIRMED_SERVICE_ACK_DATA * service_data)
{
int len = 0;
BACNET_ATOMIC_READ_FILE_DATA data;
uint32_t instance = 0;
(void) src;
/* get the file instance from the tsm data before freeing it */
instance = bacfile_instance_from_tsm(service_data->invoke_id);
len = arf_ack_decode_service_request(service_request, service_len, &data);
#if PRINT_ENABLED
fprintf(stderr, "Received Read-File Ack!\n");
#endif
if ((len > 0) && (instance <= BACNET_MAX_INSTANCE)) {
/* write the data received to the file specified */
if (data.access == FILE_STREAM_ACCESS) {
bacfile_read_ack_stream_data(instance, &data);
} else if (data.access == FILE_RECORD_ACCESS) {
/* FIXME: add handling for Record Access */
}
}
}
static void AtomicReadFileAckHandler(
uint8_t * service_request,
uint16_t service_len,
BACNET_ADDRESS * src,
BACNET_CONFIRMED_SERVICE_ACK_DATA * service_data)
{
int len = 0;
BACNET_ATOMIC_READ_FILE_DATA data;
FILE *pFile = NULL; /* stream pointer */
size_t octets_written = 0;
(void) src; /* FIXME: validate the source address matches */
len = arf_ack_decode_service_request(service_request, service_len, &data);
if (len > 0) {
/* validate the parameters before storing data */
if ((data.access == FILE_STREAM_ACCESS) &&
(service_data->invoke_id == Current_Invoke_ID)) {
if (data.type.stream.fileStartPosition == 0)
pFile = fopen(Local_File_Name, "wb");
else
pFile = fopen(Local_File_Name, "rb+");
if (pFile) {
/* is there anything to do with this? data.stream.requestedOctetCount */
(void) fseek(pFile, data.type.stream.fileStartPosition,
SEEK_SET);
octets_written = fwrite(octetstring_value(&data.fileData), 1, /* unit to write in bytes - in our case, an octet is one byte */
octetstring_length(&data.fileData), pFile);
if (octets_written != octetstring_length(&data.fileData)) {
fprintf(stderr, "Unable to write data to file \"%s\".\n",
Local_File_Name);
} else if (octets_written == 0) {
fprintf(stderr, "Received 0 byte octet string!.\n");
} else {
printf("\r%d bytes",
(data.type.stream.fileStartPosition + octets_written));
}
fflush(pFile);
fclose(pFile);
}
if (data.endOfFile) {
End_Of_File_Detected = true;
printf("\r\n");
}
}
}
}
static void AtomicReadFileAckHandler(
uint8_t * service_request,
uint16_t service_len,
BACNET_ADDRESS * src,
BACNET_CONFIRMED_SERVICE_ACK_DATA * service_data)
{
int len = 0;
BACNET_ATOMIC_READ_FILE_DATA data;
if (address_match(&Target_Address, src) &&
(service_data->invoke_id == Request_Invoke_ID)) {
len =
arf_ack_decode_service_request(service_request, service_len,
&data);
if (len > 0) {
/* validate the parameters before storing data */
if ((data.access == FILE_STREAM_ACCESS) &&
(service_data->invoke_id == Request_Invoke_ID)) {
char msg[32];
uint8_t *pFileData;
int i;
sprintf(msg, "EOF=%d,start=%d,", data.endOfFile,
data.type.stream.fileStartPosition);
__LogAnswer(msg, 0);
pFileData = octetstring_value(&data.fileData);
for (i = 0; i < octetstring_length(&data.fileData); i++) {
sprintf(msg, "%02x ", *pFileData);
__LogAnswer(msg, 1);
pFileData++;
}
} else {
LogError("Bad stream access reported");
}
}
}
}
