skarg
413 lines
17 KiB
C
413 lines
17 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2005 Steve Karg <skarg@users.sourceforge.net>
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* Enhanced by John Stachler for ReadPropertyMultiple
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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 "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 "rpm.h"
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#include "handlers.h"
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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 "bi.h"
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static uint8_t Temp_Buf[MAX_APDU] = { 0 };
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/* copy encoded apdu data to tx buffer
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this is needed to make sure we do not go past our apdu buffer size */
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bool copy_apdu_data_buffer(int *apdu_len, uint8 len, uint8 npdu_len)
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{
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bool copy_status = false;
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if ((*apdu_len + len) <= MAX_APDU) {
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memcpy(&Handler_Transmit_Buffer[*apdu_len + npdu_len], &Temp_Buf[0], len);
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*apdu_len += len;
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copy_status = true;
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}
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return copy_status;
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}
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void handler_read_property_multiple(uint8_t * service_request, uint16_t service_len, BACNET_ADDRESS * src, BACNET_CONFIRMED_SERVICE_DATA * service_data)
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{
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int len = 0;
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int decode_len = 0;
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int pdu_len = 0;
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BACNET_NPDU_DATA npdu_data;
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bool error = false;
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bool done;
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bool property_found;
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int bytes_sent;
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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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BACNET_ADDRESS my_address;
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BACNET_OBJECT_TYPE object_type;
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uint32_t object_instance = 0;
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int apdu_len = 0;
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int npdu_len;
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BACNET_PROPERTY_ID object_property, temp_object_property;
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int32_t array_index = 0;
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uint8 index;
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uint8 num_properties;
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/* jps_debug - see if we are utilizing all the buffer */
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/* memset(&Handler_Transmit_Buffer[0], 0xff, MAX_MPDU);*/
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/* encode the NPDU portion of the packet */
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datalink_get_my_address(&my_address);
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npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
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npdu_len = npdu_encode_pdu(
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&Handler_Transmit_Buffer[0],
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src, &my_address, &npdu_data);
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#if PRINT_ENABLED
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if (service_len <= 0)
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printf("RPM: Unable to decode request!\r\n");
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#endif
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/* bad decoding - send an abort */
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if (service_len == 0)
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{
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apdu_len = abort_encode_apdu(
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&Handler_Transmit_Buffer[npdu_len],
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service_data->invoke_id,
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ABORT_REASON_OTHER, true);
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#if PRINT_ENABLED
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printf("RPM: Sending Abort!\r\n");
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#endif
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} else if (service_data->segmented_message) {
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apdu_len = abort_encode_apdu(
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&Handler_Transmit_Buffer[npdu_len],
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service_data->invoke_id,
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ABORT_REASON_SEGMENTATION_NOT_SUPPORTED, true);
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#if PRINT_ENABLED
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printf("RPM: Sending Abort!\r\n");
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#endif
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} else {
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/* decode apdu request & encode apdu reply
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encode complex ack, invoke id, service choice */
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apdu_len = rpm_ack_encode_apdu_init(
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&Handler_Transmit_Buffer[npdu_len],
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service_data->invoke_id);
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do
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{
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len = rpm_ack_decode_object_id(
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&service_request[decode_len],
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service_len - decode_len,
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&object_type, &object_instance);
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if (len < 0) {
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break;
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} else {
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decode_len += len;
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}
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len = rpm_ack_encode_apdu_object_begin(
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&Temp_Buf[0],
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object_type, object_instance);
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if (!copy_apdu_data_buffer(&apdu_len, len, npdu_len)) {
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apdu_len = abort_encode_apdu(
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&Handler_Transmit_Buffer[npdu_len],
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service_data->invoke_id,
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ABORT_REASON_SEGMENTATION_NOT_SUPPORTED,
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true);
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break;
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}
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/* do each property of this object of the RPM request */
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done = true;
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num_properties = 0;
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property_found = false;
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do
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{
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if (done) {
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len = rpm_decode_object_property(
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&service_request[decode_len],
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service_len - decode_len,
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&object_property,
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&array_index);
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if (len < 0) {
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break;
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} else {
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index = 0;
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decode_len += len;
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temp_object_property = object_property;
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}
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}
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/* handle the special properties */
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if ((object_property == PROP_ALL) ||
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(object_property == PROP_REQUIRED) ||
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(object_property == PROP_OPTIONAL))
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{
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done = false;
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switch(object_type)
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{
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case OBJECT_DEVICE:
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property_found = Device_Property(
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&index, &temp_object_property,
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object_property);
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break;
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case OBJECT_ANALOG_INPUT:
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property_found = Analog_Input_Property(
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&index, &temp_object_property,
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object_property);
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break;
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case OBJECT_BINARY_INPUT:
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property_found = Binary_Input_Property(
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&index, &temp_object_property,
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object_property);
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break;
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case OBJECT_ANALOG_OUTPUT:
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property_found = Analog_Output_Property(
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&index, &temp_object_property,
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object_property);
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break;
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}
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if (property_found) {
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num_properties++;
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} else {
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if (num_properties > 0) {
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done = true;
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/* check for another property */
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len = rpm_decode_object_property(
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&service_request[decode_len],
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service_len - decode_len,
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&object_property,
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&array_index);
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if (len < 0) {
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/* check for closing tag */
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len = rpm_ack_decode_object_end(
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&service_request[decode_len],
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service_len - decode_len);
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if (len == 1) {
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decode_len++;
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}
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break;
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} else {
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decode_len += len;
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temp_object_property = object_property;
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property_found = true;
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if ((object_property == PROP_ALL) ||
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(object_property == PROP_REQUIRED) ||
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(object_property == PROP_OPTIONAL))
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{
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done = false;
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index = 0;
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switch(object_type)
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{
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case OBJECT_DEVICE:
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property_found =
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Device_Property(&index,
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&temp_object_property,
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object_property);
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break;
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case OBJECT_ANALOG_INPUT:
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property_found =
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Analog_Input_Property(&index,
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&temp_object_property,
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object_property);
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break;
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case OBJECT_BINARY_INPUT:
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property_found =
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Binary_Input_Property(&index,
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&temp_object_property,
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object_property);
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break;
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case OBJECT_ANALOG_OUTPUT:
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property_found =
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Analog_Output_Property(&index,
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&temp_object_property,
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object_property);
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break;
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}
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}
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}
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} else {
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error = true;
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done = true;
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}
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}
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} else {
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done = true;
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property_found = true;
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}
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len = rpm_ack_encode_apdu_object_property(
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&Temp_Buf[0],
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temp_object_property,
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array_index);
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if (!copy_apdu_data_buffer(&apdu_len, len, npdu_len)) {
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apdu_len = abort_encode_apdu(
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&Handler_Transmit_Buffer[npdu_len],
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service_data->invoke_id,
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ABORT_REASON_SEGMENTATION_NOT_SUPPORTED, true);
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break;
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}
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len = encode_opening_tag(&Temp_Buf[0], 4);
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if (!copy_apdu_data_buffer(&apdu_len, len, npdu_len)) {
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apdu_len = abort_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, ABORT_REASON_SEGMENTATION_NOT_SUPPORTED, true);
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break;
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}
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len = -1;
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switch(object_type) {
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case OBJECT_DEVICE:
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if ((object_instance != Device_Object_Instance_Number()) &&
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((object_instance != BACNET_MAX_INSTANCE) &&
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(temp_object_property != PROP_OBJECT_IDENTIFIER))) {
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error_class = ERROR_CLASS_OBJECT;
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error_code = ERROR_CODE_UNKNOWN_OBJECT;
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} else if (!property_found) {
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error_class = ERROR_CLASS_PROPERTY;
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error_code = ERROR_CODE_UNKNOWN_PROPERTY;
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} else {
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len = Device_Encode_Property_APDU(
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&Temp_Buf[0],
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temp_object_property,
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array_index,
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&error_class, &error_code);
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}
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break;
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case OBJECT_ANALOG_INPUT:
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if (!Analog_Input_Valid_Instance(object_instance)) {
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error_class = ERROR_CLASS_OBJECT;
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error_code = ERROR_CODE_UNKNOWN_OBJECT;
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} else if (!property_found) {
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error_class = ERROR_CLASS_PROPERTY;
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error_code = ERROR_CODE_UNKNOWN_PROPERTY;
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} else {
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len = Analog_Input_Encode_Property_APDU(
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&Temp_Buf[0],
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object_instance,
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temp_object_property,
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array_index,
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&error_class, &error_code);
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}
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break;
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case OBJECT_BINARY_INPUT:
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if (!Binary_Input_Valid_Instance(object_instance)) {
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error_class = ERROR_CLASS_OBJECT;
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error_code = ERROR_CODE_UNKNOWN_OBJECT;
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} else if (!property_found) {
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error_class = ERROR_CLASS_PROPERTY;
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error_code = ERROR_CODE_UNKNOWN_PROPERTY;
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} else {
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len = Binary_Input_Encode_Property_APDU(
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&Temp_Buf[0],
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object_instance,
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temp_object_property,
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array_index,
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&error_class, &error_code);
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}
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break;
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case OBJECT_ANALOG_OUTPUT:
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if (!Analog_Output_Valid_Instance(object_instance)) {
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error_class = ERROR_CLASS_OBJECT;
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error_code = ERROR_CODE_UNKNOWN_OBJECT;
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} else if (!property_found) {
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error_class = ERROR_CLASS_PROPERTY;
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error_code = ERROR_CODE_UNKNOWN_PROPERTY;
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} else {
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len = Analog_Output_Encode_Property_APDU(
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&Temp_Buf[0],
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object_instance,
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temp_object_property,
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array_index,
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&error_class, &error_code);
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}
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break;
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default:
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len = -1;
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error_class = ERROR_CLASS_OBJECT;
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error_code = ERROR_CODE_UNSUPPORTED_OBJECT_TYPE;
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break;
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}
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if (len < 0) {
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len = rpm_ack_encode_apdu_object_property_error(
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&Temp_Buf[0],
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error_class, error_code);
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apdu_len--;
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error = true;
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}
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if (!copy_apdu_data_buffer(&apdu_len, len, npdu_len)) {
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apdu_len = abort_encode_apdu(
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&Handler_Transmit_Buffer[npdu_len],
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service_data->invoke_id,
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ABORT_REASON_SEGMENTATION_NOT_SUPPORTED,
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true);
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}
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if (!error && property_found) {
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len = encode_closing_tag(&Temp_Buf[0], 4);
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if (!copy_apdu_data_buffer(&apdu_len, len, npdu_len)) {
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apdu_len = abort_encode_apdu(
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&Handler_Transmit_Buffer[npdu_len],
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service_data->invoke_id,
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ABORT_REASON_SEGMENTATION_NOT_SUPPORTED,
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true);
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break;
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}
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} else {
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error = false;
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}
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/* check for closing tag */
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if (done) {
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len = rpm_ack_decode_object_end(
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&service_request[decode_len],
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service_len - decode_len);
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if (len == 1) {
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decode_len++;
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break;
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}
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}
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} while(1);
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len = encode_closing_tag(&Temp_Buf[0], 1);
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if (!copy_apdu_data_buffer(&apdu_len, len, npdu_len)) {
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apdu_len = abort_encode_apdu(
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&Handler_Transmit_Buffer[npdu_len],
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service_data->invoke_id,
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ABORT_REASON_SEGMENTATION_NOT_SUPPORTED,
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true);
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break;
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}
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if (decode_len >= service_len) {
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break;
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}
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} while(1);
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}
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pdu_len = apdu_len + npdu_len;
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bytes_sent = datalink_send_pdu(
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src,
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&npdu_data,
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&Handler_Transmit_Buffer[0],
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pdu_len);
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}
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