/************************************************************************** * * Copyright (C) 2005 Steve Karg * * 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 #include #include #include #include "bacnet/config.h" #include "bacnet/bacdef.h" #include "bacnet/bacdcode.h" #include "bacnet/basic/binding/address.h" #include "bacnet/basic/tsm/tsm.h" #include "bacnet/npdu.h" #include "bacnet/apdu.h" #include "bacnet/basic/object/device.h" #include "bacnet/datalink/datalink.h" #include "bacnet/dcc.h" #include "bacnet/whois.h" #include "bacnet/bacenum.h" /* some demo stuff needed */ #include "bacnet/basic/object/device.h" #include "bacnet/basic/services.h" #include "bacnet/basic/tsm/tsm.h" #include "bacnet/datalink/datalink.h" /** @file s_whois.c Send a Who-Is request. */ /** Send a Who-Is request to a remote network for a specific device, a range, * or any device. * If low_limit and high_limit both are -1, then the range is unlimited. * If low_limit and high_limit have the same non-negative value, then only * that device will respond. * Otherwise, low_limit must be less than high_limit. * @param target_address [in] BACnet address of target router * @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1 * @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1 */ void Send_WhoIs_To_Network( BACNET_ADDRESS *target_address, int32_t low_limit, int32_t high_limit) { int len = 0; int pdu_len = 0; int bytes_sent = 0; BACNET_NPDU_DATA npdu_data; BACNET_ADDRESS my_address; datalink_get_my_address(&my_address); /* encode the NPDU portion of the packet */ npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL); pdu_len = npdu_encode_pdu( &Handler_Transmit_Buffer[0], target_address, &my_address, &npdu_data); /* encode the APDU portion of the packet */ len = whois_encode_apdu( &Handler_Transmit_Buffer[pdu_len], low_limit, high_limit); pdu_len += len; bytes_sent = datalink_send_pdu( target_address, &npdu_data, &Handler_Transmit_Buffer[0], pdu_len); #if PRINT_ENABLED if (bytes_sent <= 0) fprintf( stderr, "Failed to Send Who-Is Request (%s)!\n", strerror(errno)); #else (void)bytes_sent; #endif } /** Send a global Who-Is request for a specific device, a range, or any device. * If low_limit and high_limit both are -1, then the range is unlimited. * If low_limit and high_limit have the same non-negative value, then only * that device will respond. * Otherwise, low_limit must be less than high_limit. * @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1 * @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1 */ void Send_WhoIs_Global(int32_t low_limit, int32_t high_limit) { BACNET_ADDRESS dest; if (!dcc_communication_enabled()) { return; } /* Who-Is is a global broadcast */ datalink_get_broadcast_address(&dest); Send_WhoIs_To_Network(&dest, low_limit, high_limit); } /** Send a local Who-Is request for a specific device, a range, or any device. * If low_limit and high_limit both are -1, then the range is unlimited. * If low_limit and high_limit have the same non-negative value, then only * that device will respond. * Otherwise, low_limit must be less than high_limit. * @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1 * @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1 */ void Send_WhoIs_Local(int32_t low_limit, int32_t high_limit) { /* mac_len = 0 is local - set them all to zero! */ BACNET_ADDRESS dest = { 0 }; Send_WhoIs_To_Network(&dest, low_limit, high_limit); } /** Send a Who-Is request to a remote network for a specific device, a range, * or any device. * @ingroup DMDDB * If low_limit and high_limit both are -1, then the range is unlimited. * If low_limit and high_limit have the same non-negative value, then only * that device will respond. * Otherwise, low_limit must be less than high_limit. * @param target_address [in] BACnet address of target router * @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1 * @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1 */ void Send_WhoIs_Remote( BACNET_ADDRESS *target_address, int32_t low_limit, int32_t high_limit) { if (!dcc_communication_enabled()) { return; } Send_WhoIs_To_Network(target_address, low_limit, high_limit); } /** Send a global Who-Is request for a specific device, a range, or any device. * @ingroup DMDDB * This was the original Who-Is broadcast but the code was moved to the more * descriptive Send_WhoIs_Global when Send_WhoIs_Local and Send_WhoIsRemote was * added. * If low_limit and high_limit both are -1, then the range is unlimited. * If low_limit and high_limit have the same non-negative value, then only * that device will respond. * Otherwise, low_limit must be less than high_limit. * @param low_limit [in] Device Instance Low Range, 0 - 4,194,303 or -1 * @param high_limit [in] Device Instance High Range, 0 - 4,194,303 or -1 */ void Send_WhoIs(int32_t low_limit, int32_t high_limit) { Send_WhoIs_Global(low_limit, high_limit); }