Steve Karg
164 lines
6.3 KiB
C
164 lines
6.3 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 <errno.h>
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#include <string.h>
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#include "bacnet/config.h"
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#include "bacnet/bacdef.h"
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#include "bacnet/bacdcode.h"
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#include "bacnet/basic/binding/address.h"
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#include "bacnet/basic/tsm/tsm.h"
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#include "bacnet/npdu.h"
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#include "bacnet/apdu.h"
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#include "bacnet/basic/object/device.h"
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#include "bacnet/datalink/datalink.h"
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#include "bacnet/dcc.h"
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#include "bacnet/whois.h"
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#include "bacnet/bacenum.h"
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/* some demo stuff needed */
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#include "bacnet/basic/object/device.h"
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#include "bacnet/basic/services.h"
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#include "bacnet/basic/tsm/tsm.h"
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#include "bacnet/datalink/datalink.h"
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/** @file s_whois.c Send a Who-Is request. */
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/** Send a Who-Is request to a remote network for a specific device, a range,
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* or any device.
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* If low_limit and high_limit both are -1, then the range is unlimited.
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* If low_limit and high_limit have the same non-negative value, then only
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* that device will respond.
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* Otherwise, low_limit must be less than high_limit.
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* @param target_address [in] BACnet address of target router
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* @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1
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* @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1
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*/
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void Send_WhoIs_To_Network(
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BACNET_ADDRESS *target_address, int32_t low_limit, int32_t high_limit)
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{
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int len = 0;
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int pdu_len = 0;
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int bytes_sent = 0;
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BACNET_NPDU_DATA npdu_data;
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BACNET_ADDRESS my_address;
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datalink_get_my_address(&my_address);
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/* encode the NPDU portion of the packet */
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npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
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pdu_len = npdu_encode_pdu(
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&Handler_Transmit_Buffer[0], target_address, &my_address, &npdu_data);
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/* encode the APDU portion of the packet */
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len = whois_encode_apdu(
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&Handler_Transmit_Buffer[pdu_len], low_limit, high_limit);
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pdu_len += len;
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bytes_sent = datalink_send_pdu(
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target_address, &npdu_data, &Handler_Transmit_Buffer[0], pdu_len);
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#if PRINT_ENABLED
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if (bytes_sent <= 0)
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fprintf(
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stderr, "Failed to Send Who-Is Request (%s)!\n", strerror(errno));
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#else
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(void)bytes_sent;
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#endif
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}
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/** Send a global Who-Is request for a specific device, a range, or any device.
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* If low_limit and high_limit both are -1, then the range is unlimited.
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* If low_limit and high_limit have the same non-negative value, then only
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* that device will respond.
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* Otherwise, low_limit must be less than high_limit.
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* @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1
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* @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1
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*/
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void Send_WhoIs_Global(int32_t low_limit, int32_t high_limit)
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{
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BACNET_ADDRESS dest;
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if (!dcc_communication_enabled()) {
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return;
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}
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/* Who-Is is a global broadcast */
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datalink_get_broadcast_address(&dest);
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Send_WhoIs_To_Network(&dest, low_limit, high_limit);
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}
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/** Send a local Who-Is request for a specific device, a range, or any device.
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* If low_limit and high_limit both are -1, then the range is unlimited.
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* If low_limit and high_limit have the same non-negative value, then only
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* that device will respond.
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* Otherwise, low_limit must be less than high_limit.
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* @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1
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* @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1
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*/
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void Send_WhoIs_Local(int32_t low_limit, int32_t high_limit)
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{
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/* mac_len = 0 is local - set them all to zero! */
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BACNET_ADDRESS dest = { 0 };
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Send_WhoIs_To_Network(&dest, low_limit, high_limit);
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}
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/** Send a Who-Is request to a remote network for a specific device, a range,
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* or any device.
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* @ingroup DMDDB
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* If low_limit and high_limit both are -1, then the range is unlimited.
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* If low_limit and high_limit have the same non-negative value, then only
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* that device will respond.
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* Otherwise, low_limit must be less than high_limit.
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* @param target_address [in] BACnet address of target router
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* @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1
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* @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1
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*/
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void Send_WhoIs_Remote(
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BACNET_ADDRESS *target_address, int32_t low_limit, int32_t high_limit)
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{
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if (!dcc_communication_enabled()) {
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return;
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}
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Send_WhoIs_To_Network(target_address, low_limit, high_limit);
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}
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/** Send a global Who-Is request for a specific device, a range, or any device.
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* @ingroup DMDDB
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* This was the original Who-Is broadcast but the code was moved to the more
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* descriptive Send_WhoIs_Global when Send_WhoIs_Local and Send_WhoIsRemote was
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* added.
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* If low_limit and high_limit both are -1, then the range is unlimited.
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* If low_limit and high_limit have the same non-negative value, then only
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* that device will respond.
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* Otherwise, low_limit must be less than high_limit.
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* @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1
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* @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1
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*/
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void Send_WhoIs(int32_t low_limit, int32_t high_limit)
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{
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Send_WhoIs_Global(low_limit, high_limit);
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}
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