skarg
67 lines
2.5 KiB
C
67 lines
2.5 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 "whois.h"
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#include "iam.h"
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#include "device.h"
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#include "client.h"
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#include "txbuf.h"
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void handler_who_is(uint8_t * service_request,
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uint16_t service_len, BACNET_ADDRESS * src)
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{
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int len = 0;
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int32_t low_limit = 0;
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int32_t high_limit = 0;
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(void) src;
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len = whois_decode_service_request(service_request,
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service_len, &low_limit, &high_limit);
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/* in our simple system, we just set a flag and let the main loop
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send the I-Am request. */
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if (len == 0)
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iam_send(&Handler_Transmit_Buffer[0]);
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else if (len != -1) {
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/* is my device id within the limits? */
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if (((Device_Object_Instance_Number() >= (uint32_t) low_limit) &&
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(Device_Object_Instance_Number() <= (uint32_t) high_limit))
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||
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/* BACnet wildcard is the max instance number - everyone responds */
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((BACNET_MAX_INSTANCE >= (uint32_t) low_limit) &&
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(BACNET_MAX_INSTANCE <= (uint32_t) high_limit)))
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iam_send(&Handler_Transmit_Buffer[0]);
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}
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return;
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}
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