/************************************************************************** * * 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 "config.h" #include "txbuf.h" #include "bacdef.h" #include "bacdcode.h" #include "address.h" #include "tsm.h" #include "npdu.h" #include "apdu.h" #include "device.h" #include "datalink.h" #include "dcc.h" #include "whois.h" #include "bacenum.h" /* some demo stuff needed */ #include "handlers.h" #include "txbuf.h" #include "client.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)); #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) { BACNET_ADDRESS dest; char temp[6]; int loop; if (!dcc_communication_enabled()) return; /* Who-Is is a global broadcast */ datalink_get_broadcast_address(&dest); /* encode the NPDU portion of the packet */ /* I added this to make it a local broadcast */ dest.net = 0; /* Not sure why this happens but values are backwards so they need to be reversed */ temp[0] = dest.mac[3]; temp[1] = dest.mac[2]; temp[2] = dest.mac[1]; temp[3] = dest.mac[0]; temp[4] = dest.mac[5]; temp[5] = dest.mac[4]; for (loop = 0; loop < 6; loop++) { dest.mac[loop] = temp[loop]; } 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); }