mirror of
https://github.com/stargieg/bacnet-stack
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109 lines
3.5 KiB
C
109 lines
3.5 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 "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 "iam.h"
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#include "address.h"
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#include "handlers.h"
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/** @file h_iam.c Handles I-Am requests. */
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/** Handler for I-Am responses.
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* Will add the responder to our cache, or update its binding.
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* @ingroup DMDDB
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* @param service_request [in] The received message to be handled.
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* @param service_len [in] Length of the service_request message.
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* @param src [in] The BACNET_ADDRESS of the message's source.
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*/
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void handler_i_am_add(
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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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{
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int len = 0;
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uint32_t device_id = 0;
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unsigned max_apdu = 0;
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int segmentation = 0;
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uint16_t vendor_id = 0;
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(void) service_len;
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len =
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iam_decode_service_request(service_request, &device_id, &max_apdu,
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&segmentation, &vendor_id);
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#if PRINT_ENABLED
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fprintf(stderr, "Received I-Am Request");
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#endif
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if (len != -1) {
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#if PRINT_ENABLED
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fprintf(stderr, " from %lu, MAC = %d.%d.%d.%d.%d.%d\n",
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(unsigned long) device_id, src->mac[0], src->mac[1], src->mac[2],
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src->mac[3], src->mac[4], src->mac[5]);
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#endif
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address_add(device_id, max_apdu, src);
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} else {
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#if PRINT_ENABLED
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fprintf(stderr, ", but unable to decode it.\n");
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#endif
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}
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return;
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}
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/** Handler for I-Am responses (older binding-update-only version).
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* Will update the responder's binding, but if already in our cache.
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* @note This handler is deprecated, in favor of handler_i_am_add().
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*
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* @param service_request [in] The received message to be handled.
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* @param service_len [in] Length of the service_request message.
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* @param src [in] The BACNET_ADDRESS of the message's source.
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*/
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void handler_i_am_bind(
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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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{
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int len = 0;
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uint32_t device_id = 0;
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unsigned max_apdu = 0;
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int segmentation = 0;
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uint16_t vendor_id = 0;
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(void) service_len;
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len =
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iam_decode_service_request(service_request, &device_id, &max_apdu,
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&segmentation, &vendor_id);
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if (len > 0) {
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/* only add address if requested to bind */
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address_add_binding(device_id, max_apdu, src);
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}
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return;
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}
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