bacnet_stack/bacnet-stack/demo/handler/h_wp.c

/**************************************************************************
*
* Copyright (C) 2005 Steve Karg <skarg@users.sourceforge.net>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*********************************************************************/
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "config.h"
#include "txbuf.h"
#include "bacdef.h"
#include "bacdcode.h"
#include "apdu.h"
#include "npdu.h"
#include "abort.h"
#include "wp.h"
/* demo objects */
#include "device.h"
#include "ai.h"
#include "ao.h"
#if BACFILE
#include "bacfile.h"
#endif

static uint8_t Temp_Buf[MAX_APDU] = {0};

void handler_write_property(
  uint8_t *service_request,
  uint16_t service_len,
  BACNET_ADDRESS *src,
  BACNET_CONFIRMED_SERVICE_DATA *service_data)
{
  BACNET_WRITE_PROPERTY_DATA wp_data;
  int len = 0;
  int pdu_len = 0;
  BACNET_ADDRESS my_address;
  BACNET_ERROR_CLASS error_class = ERROR_CLASS_OBJECT;
  BACNET_ERROR_CODE error_code = ERROR_CODE_UNKNOWN_OBJECT;
  int bytes_sent = 0;

  // decode the service request only
  len = wp_decode_service_request(
    service_request,
    service_len,
    &wp_data);
  fprintf(stderr,"Received Write-Property Request!\n");
  if (len > 0)
    fprintf(stderr,"type=%u instance=%u property=%u index=%d\n",
      wp_data.object_type,
      wp_data.object_instance,
      wp_data.object_property,
      wp_data.array_index);
  else
    fprintf(stderr,"Unable to decode Write-Property Request!\n");
  // prepare a reply
  datalink_get_my_address(&my_address);
  // encode the NPDU portion of the packet
  pdu_len = npdu_encode_apdu(
    &Handler_Transmit_Buffer[0],
    src,
    &my_address,
    false,  // true for confirmed messages
    MESSAGE_PRIORITY_NORMAL);
  // bad decoding or something we didn't understand - send an abort
  if (len == -1)
  {
    pdu_len += abort_encode_apdu(
      &Handler_Transmit_Buffer[pdu_len],
      service_data->invoke_id,
      ABORT_REASON_OTHER);
    fprintf(stderr,"Sending Abort!\n");
  }
  else if (service_data->segmented_message)
  {
    pdu_len += abort_encode_apdu(
      &Handler_Transmit_Buffer[pdu_len],
      service_data->invoke_id,
      ABORT_REASON_SEGMENTATION_NOT_SUPPORTED);
    fprintf(stderr,"Sending Abort!\n");
  }
  else
  {
    switch (wp_data.object_type)
    {
      case OBJECT_DEVICE:
        if (Device_Write_Property(&wp_data,&error_class,&error_code))
        {
          pdu_len += encode_simple_ack(
            &Handler_Transmit_Buffer[pdu_len],
            service_data->invoke_id,
            SERVICE_CONFIRMED_WRITE_PROPERTY);
          fprintf(stderr,"Sending Write Property Simple Ack!\n");
        }
        else
        {
          pdu_len += bacerror_encode_apdu(
            &Handler_Transmit_Buffer[pdu_len],
            service_data->invoke_id,
            SERVICE_CONFIRMED_WRITE_PROPERTY,
            error_class,
            error_code);
          fprintf(stderr,"Sending Write Property Error!\n");
        }
        break;
      case OBJECT_ANALOG_INPUT:
        error_class = ERROR_CLASS_PROPERTY;
        error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
        pdu_len += bacerror_encode_apdu(
          &Handler_Transmit_Buffer[pdu_len],
          service_data->invoke_id,
          SERVICE_CONFIRMED_WRITE_PROPERTY,
          error_class,
          error_code);
        fprintf(stderr,"Sending Write Access Error!\n");
        break;
      case OBJECT_ANALOG_OUTPUT:
        if (Analog_Output_Write_Property(&wp_data,&error_class,&error_code))
        {
          pdu_len += encode_simple_ack(
            &Handler_Transmit_Buffer[pdu_len],
            service_data->invoke_id,
            SERVICE_CONFIRMED_WRITE_PROPERTY);
          fprintf(stderr,"Sending Write Property Simple Ack!\n");
        }
        else
        {
          pdu_len += bacerror_encode_apdu(
            &Handler_Transmit_Buffer[pdu_len],
            service_data->invoke_id,
            SERVICE_CONFIRMED_WRITE_PROPERTY,
            error_class,
            error_code);
          fprintf(stderr,"Sending Write Access Error!\n");
  }
        break;
      default:
        pdu_len += bacerror_encode_apdu(
          &Handler_Transmit_Buffer[pdu_len],
          service_data->invoke_id,
          SERVICE_CONFIRMED_WRITE_PROPERTY,
          error_class,
          error_code);
        fprintf(stderr,"Sending Unknown Object Error!\n");
        break;
    }
  }
  bytes_sent = datalink_send_pdu(
    src,  // destination address
    &Handler_Transmit_Buffer[0],
    pdu_len); // number of bytes of data
  if (bytes_sent <= 0)
    fprintf(stderr,"Failed to send PDU (%s)!\n", strerror(errno));

  return;
}