mirror of
https://github.com/stargieg/bacnet-stack
synced 2025-10-26 23:35:52 +08:00
246 lines
8.6 KiB
C
246 lines
8.6 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2009 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 "bacerror.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 "event.h"
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#include "getevent.h"
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#include "handlers.h"
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/** @file h_getevent.c Handles Get Event Information request. */
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static get_event_info_function Get_Event_Info[MAX_BACNET_OBJECT_TYPE];
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/** print eventState
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*/
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void ge_ack_print_data(
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BACNET_GET_EVENT_INFORMATION_DATA * data,
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uint32_t device_id)
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{
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BACNET_GET_EVENT_INFORMATION_DATA *act_data = data;
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const char* state_strs[] = {"NO", "FA", "ON", "HL", "LL"};
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printf("DeviceID\tType\tInstance\teventState\n");
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printf("--------------- ------- --------------- ---------------\n");
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int count = 0;
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while (act_data) {
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printf("%u\t\t%u\t%u\t\t%s\n",
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device_id,
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act_data->objectIdentifier.type,
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act_data->objectIdentifier.instance,
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state_strs[data->eventState]
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);
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act_data = act_data->next;
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count++;
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}
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printf("\n%u\t Total\n",count);
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}
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void handler_get_event_information_set(
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BACNET_OBJECT_TYPE object_type,
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get_event_info_function pFunction)
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{
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if (object_type < MAX_BACNET_OBJECT_TYPE) {
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Get_Event_Info[object_type] = pFunction;
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}
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}
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void handler_get_event_information(
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uint8_t * service_request,
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uint16_t service_len,
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BACNET_ADDRESS * src,
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BACNET_CONFIRMED_SERVICE_DATA * service_data)
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{
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int len = 0;
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int pdu_len = 0;
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int apdu_len = 0;
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BACNET_NPDU_DATA npdu_data;
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bool error = false;
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bool more_events = 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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BACNET_ADDRESS my_address;
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BACNET_OBJECT_ID object_id;
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unsigned i = 0, j = 0; /* counter */
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BACNET_GET_EVENT_INFORMATION_DATA getevent_data;
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int valid_event = 0;
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/* initialize type of 'Last Received Object Identifier' using max value */
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object_id.type = MAX_BACNET_OBJECT_TYPE;
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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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pdu_len =
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npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address,
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&npdu_data);
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if (service_data->segmented_message) {
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/* we don't support segmentation - send an abort */
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len =
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abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
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service_data->invoke_id, ABORT_REASON_SEGMENTATION_NOT_SUPPORTED,
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true);
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#if PRINT_ENABLED
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fprintf(stderr,
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"GetEventInformation: " "Segmented message. Sending Abort!\n");
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#endif
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goto GET_EVENT_ABORT;
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}
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len =
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getevent_decode_service_request(service_request, service_len,
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&object_id);
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if (len < 0) {
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/* bad decoding - send an abort */
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len =
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abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
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service_data->invoke_id, ABORT_REASON_OTHER, true);
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#if PRINT_ENABLED
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fprintf(stderr,
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"GetEventInformation: Bad Encoding. Sending Abort!\n");
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#endif
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goto GET_EVENT_ABORT;
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}
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len =
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getevent_ack_encode_apdu_init(&Handler_Transmit_Buffer[pdu_len],
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sizeof(Handler_Transmit_Buffer) - pdu_len, service_data->invoke_id);
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if (len <= 0) {
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error = true;
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goto GET_EVENT_ERROR;
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}
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pdu_len += len;
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apdu_len = len;
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for (i = 0; i < MAX_BACNET_OBJECT_TYPE; i++) {
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if (Get_Event_Info[i]) {
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for (j = 0; j < 0xffff; j++) {
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valid_event = Get_Event_Info[i] (j, &getevent_data);
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if (valid_event > 0) {
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/* encode GetEvent_data only when type of object_id has max value */
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if (object_id.type != MAX_BACNET_OBJECT_TYPE) {
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if ((object_id.type ==
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getevent_data.objectIdentifier.type) &&
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(object_id.instance ==
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getevent_data.objectIdentifier.instance)) {
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/* found 'Last Received Object Identifier'
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so should set type of object_id to max value */
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object_id.type = MAX_BACNET_OBJECT_TYPE;
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}
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continue;
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}
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getevent_data.next = NULL;
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len =
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getevent_ack_encode_apdu_data(&Handler_Transmit_Buffer
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[pdu_len], sizeof(Handler_Transmit_Buffer) - pdu_len,
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&getevent_data);
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if (len <= 0) {
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error = true;
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goto GET_EVENT_ERROR;
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}
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apdu_len += len;
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if ((apdu_len >= service_data->max_resp - 2) ||
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(apdu_len >= MAX_APDU - 2)) {
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/* Device must be able to fit minimum
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one event information.
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Length of one event informations needs
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more than 50 octets. */
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if ((service_data->max_resp < 128) ||
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(MAX_APDU < 128)) {
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len = BACNET_STATUS_ABORT;
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error = true;
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goto GET_EVENT_ERROR;
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} else {
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more_events = true;
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}
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break;
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} else {
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pdu_len += len;
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}
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} else if (valid_event < 0) {
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break;
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}
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}
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}
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}
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len =
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getevent_ack_encode_apdu_end(&Handler_Transmit_Buffer[pdu_len],
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sizeof(Handler_Transmit_Buffer) - pdu_len, more_events);
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if (len <= 0) {
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error = true;
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goto GET_EVENT_ERROR;
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}
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#if PRINT_ENABLED
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fprintf(stderr, "Got a GetEventInformation request: Sending Ack!\n");
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#endif
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GET_EVENT_ERROR:
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if (error) {
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pdu_len =
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npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address,
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&npdu_data);
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if (len == -2) {
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/* BACnet APDU too small to fit data, so proper response is Abort */
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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, true);
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#if PRINT_ENABLED
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fprintf(stderr,
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"GetEventInformation: " "Reply too big to fit into APDU!\n");
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#endif
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} else {
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len =
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bacerror_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
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service_data->invoke_id, SERVICE_CONFIRMED_READ_PROPERTY,
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error_class, error_code);
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#if PRINT_ENABLED
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fprintf(stderr, "GetEventInformation: Sending Error!\n");
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#endif
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}
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}
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GET_EVENT_ABORT:
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pdu_len += len;
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bytes_sent =
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datalink_send_pdu(src, &npdu_data, &Handler_Transmit_Buffer[0],
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pdu_len);
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#if PRINT_ENABLED
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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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#endif
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return;
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}
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