skarg
123 lines
4.6 KiB
C
123 lines
4.6 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2005 Steve Karg <skarg@users.sourceforge.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*********************************************************************/
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include "config.h"
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#include "txbuf.h"
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#include "bacdef.h"
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#include "bacdcode.h"
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#include "apdu.h"
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#include "npdu.h"
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#include "abort.h"
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#include "arf.h"
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/* demo objects */
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#include "device.h"
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#include "ai.h"
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#include "ao.h"
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#include "bacfile.h"
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void handler_atomic_read_file(uint8_t * service_request,
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uint16_t service_len,
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BACNET_ADDRESS * src, BACNET_CONFIRMED_SERVICE_DATA * service_data)
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{
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BACNET_ATOMIC_READ_FILE_DATA data;
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int len = 0;
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int pdu_len = 0;
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BACNET_ADDRESS my_address;
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bool send = false;
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bool error = false;
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int bytes_sent = 0;
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BACNET_ERROR_CLASS error_class = ERROR_CLASS_OBJECT;
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BACNET_ERROR_CODE error_code = ERROR_CODE_UNKNOWN_OBJECT;
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fprintf(stderr, "Received Atomic-Read-File Request!\n");
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len = arf_decode_service_request(service_request, service_len, &data);
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if (len < 0)
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fprintf(stderr, "Unable to decode Atomic-Read-File Request!\n");
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/* prepare a reply */
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datalink_get_my_address(&my_address);
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/* encode the NPDU portion of the packet */
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pdu_len = npdu_encode_apdu(&Handler_Transmit_Buffer[0], src, &my_address, false, /* true for confirmed messages */
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MESSAGE_PRIORITY_NORMAL);
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/* bad decoding - send an abort */
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if (len < 0) {
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pdu_len += abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
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service_data->invoke_id, ABORT_REASON_OTHER);
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fprintf(stderr, "Sending Abort!\n");
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send = true;
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} else if (service_data->segmented_message) {
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pdu_len += abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
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service_data->invoke_id,
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ABORT_REASON_SEGMENTATION_NOT_SUPPORTED);
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fprintf(stderr, "Sending Abort!\n");
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send = true;
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} else {
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if (data.access == FILE_STREAM_ACCESS) {
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if (data.type.stream.requestedOctetCount <
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octetstring_capacity(&data.fileData)) {
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if (bacfile_read_data(&data)) {
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pdu_len +=
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arf_ack_encode_apdu(&Handler_Transmit_Buffer
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[pdu_len], service_data->invoke_id, &data);
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send = true;
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} else {
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send = true;
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error = true;
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}
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} else {
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pdu_len +=
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abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
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service_data->invoke_id,
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ABORT_REASON_SEGMENTATION_NOT_SUPPORTED);
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fprintf(stderr, "Sending Abort!\n");
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send = true;
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}
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} else {
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error_class = ERROR_CLASS_SERVICES;
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error_code = ERROR_CODE_INVALID_FILE_ACCESS_METHOD;
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send = true;
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error = true;
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}
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}
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if (error) {
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pdu_len += bacerror_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
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service_data->invoke_id,
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SERVICE_CONFIRMED_ATOMIC_READ_FILE, error_class, error_code);
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fprintf(stderr, "Sending Error!\n");
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send = true;
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}
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if (send) {
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bytes_sent = datalink_send_pdu(src, /* destination address */
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&Handler_Transmit_Buffer[0], pdu_len); /* number of bytes of data */
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if (bytes_sent <= 0)
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fprintf(stderr, "Failed to send PDU (%s)!\n", strerror(errno));
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}
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return;
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}
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