h_wp.c

Bacnet protocol stack for linux

/**************************************************************************
*
* Copyright (C) 2005 Steve Karg <[e-mail]>
*
* 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 "bacerror.h"
#include "apdu.h"
#include "npdu.h"
#include "abort.h"
#include "wp.h"
/* demo objects */
#include "device.h"
#include "ai.h"
#include "av.h"
#include "bi.h"
#include "bv.h"

/* too big to reside on stack frame for PIC */
static BACNET_WRITE_PROPERTY_DATA wp_data;

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

    /* encode the NPDU portion of the packet */
    datalink_get_my_address(&my_address);
    npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
    pdu_len =
        npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address,
        &npdu_data);
    if (service_data->segmented_message) {
        len =
            abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
            service_data->invoke_id, ABORT_REASON_SEGMENTATION_NOT_SUPPORTED,
            true);
        goto WP_ABORT;
    }
    /* decode the service request only */
    len = wp_decode_service_request(service_request, service_len, &wp_data);
    /* bad decoding or something we didn't understand - send an abort */
    if (len <= 0) {
        len =
            abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
            service_data->invoke_id, ABORT_REASON_OTHER, true);
        goto WP_ABORT;
    }
    /* handle the object type */
    switch (wp_data.object_type) {
        case OBJECT_DEVICE:
            if (Device_Write_Property(&wp_data, &error_class, &error_code)) {
                len =
                    encode_simple_ack(&Handler_Transmit_Buffer[pdu_len],
                    service_data->invoke_id, SERVICE_CONFIRMED_WRITE_PROPERTY);
            } else {
                len =
                    bacerror_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
                    service_data->invoke_id, SERVICE_CONFIRMED_WRITE_PROPERTY,
                    error_class, error_code);
            }
            break;
        case OBJECT_ANALOG_INPUT:
        case OBJECT_BINARY_INPUT:
            error_class = ERROR_CLASS_PROPERTY;
            error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
            len =
                bacerror_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
                service_data->invoke_id, SERVICE_CONFIRMED_WRITE_PROPERTY,
                error_class, error_code);
            break;
        case OBJECT_BINARY_VALUE:
            if (Binary_Value_Write_Property(&wp_data, &error_class,
                    &error_code)) {
                len =
                    encode_simple_ack(&Handler_Transmit_Buffer[pdu_len],
                    service_data->invoke_id, SERVICE_CONFIRMED_WRITE_PROPERTY);
            } else {
                len =
                    bacerror_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
                    service_data->invoke_id, SERVICE_CONFIRMED_WRITE_PROPERTY,
                    error_class, error_code);
            }
            break;
        case OBJECT_ANALOG_VALUE:
            if (Analog_Value_Write_Property(&wp_data, &error_class,
                    &error_code)) {
                len =
                    encode_simple_ack(&Handler_Transmit_Buffer[pdu_len],
                    service_data->invoke_id, SERVICE_CONFIRMED_WRITE_PROPERTY);
            } else {
                len =
                    bacerror_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
                    service_data->invoke_id, SERVICE_CONFIRMED_WRITE_PROPERTY,
                    error_class, error_code);
            }
            break;
        default:
            len =
                bacerror_encode_apdu(&Handler_Transmit_Buffer[pdu_len],
                service_data->invoke_id, SERVICE_CONFIRMED_WRITE_PROPERTY,
                error_class, error_code);
            break;
    }
  WP_ABORT:
    pdu_len += len;
    bytes_sent =
        datalink_send_pdu(src, &npdu_data, &Handler_Transmit_Buffer[0],
        pdu_len);

    return;
}