/************************************************************************** * * Copyright (C) 2006 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. * *********************************************************************/ /* READPROP: command line tool that reads a property from a BACnet device. */ #include #include #include #include #include /* for time */ #include #include "bactext.h" #include "iam.h" #include "arf.h" #include "tsm.h" #include "address.h" #include "config.h" #include "bacdef.h" #include "npdu.h" #include "apdu.h" #include "device.h" #include "net.h" #include "datalink.h" #include "whois.h" /* some demo stuff needed */ #include "filename.h" #include "handlers.h" #include "client.h" #include "txbuf.h" /* buffer used for receive */ static uint8_t Rx_Buf[MAX_MPDU] = { 0 }; /* global variables used in this file */ static uint32_t Target_Device_Object_Instance = BACNET_MAX_INSTANCE; static uint32_t Target_Object_Instance = BACNET_MAX_INSTANCE; static BACNET_OBJECT_TYPE Target_Object_Type = OBJECT_ANALOG_INPUT; static BACNET_PROPERTY_ID Target_Object_Property = PROP_ACKED_TRANSITIONS; static int32_t Target_Object_Index = BACNET_ARRAY_ALL; static BACNET_ADDRESS Target_Address; static bool Error_Detected = false; static void MyErrorHandler(BACNET_ADDRESS * src, uint8_t invoke_id, BACNET_ERROR_CLASS error_class, BACNET_ERROR_CODE error_code) { /* FIXME: verify src and invoke id */ (void) src; (void) invoke_id; printf("BACnet Error: %s: %s\r\n", bactext_error_class_name(error_class), bactext_error_code_name(error_code)); Error_Detected = true; } void MyAbortHandler(BACNET_ADDRESS * src, uint8_t invoke_id, uint8_t abort_reason) { /* FIXME: verify src and invoke id */ (void) src; (void) invoke_id; printf("BACnet Abort: %s\r\n", bactext_abort_reason_name(abort_reason)); Error_Detected = true; } void MyRejectHandler(BACNET_ADDRESS * src, uint8_t invoke_id, uint8_t reject_reason) { /* FIXME: verify src and invoke id */ (void) src; (void) invoke_id; printf("BACnet Reject: %s\r\n", bactext_reject_reason_name(reject_reason)); Error_Detected = true; } static void Init_Service_Handlers(void) { /* we need to handle who-is to support dynamic device binding to us */ apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_WHO_IS, handler_who_is); /* handle i-am to support binding to other devices */ apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_I_AM, handler_i_am_bind); /* set the handler for all the services we don't implement It is required to send the proper reject message... */ apdu_set_unrecognized_service_handler_handler (handler_unrecognized_service); /* we must implement read property - it's required! */ apdu_set_confirmed_handler(SERVICE_CONFIRMED_READ_PROPERTY, handler_read_property); /* handle the data coming back from confirmed requests */ apdu_set_confirmed_ack_handler(SERVICE_CONFIRMED_READ_PROPERTY, handler_read_property_ack); /* handle any errors coming back */ apdu_set_error_handler(SERVICE_CONFIRMED_READ_PROPERTY, MyErrorHandler); apdu_set_abort_handler(MyAbortHandler); apdu_set_reject_handler(MyRejectHandler); } int main(int argc, char *argv[]) { BACNET_ADDRESS src = { 0 }; /* address where message came from */ uint16_t pdu_len = 0; unsigned timeout = 100; /* milliseconds */ unsigned max_apdu = 0; time_t elapsed_seconds = 0; time_t last_seconds = 0; time_t current_seconds = 0; time_t timeout_seconds = 0; uint8_t invoke_id = 0; bool found = false; if (argc < 5) { printf ("%s device-instance object-type object-instance property [index]\r\n", filename_remove_path(argv[0])); return 0; } /* decode the command line parameters */ Target_Device_Object_Instance = strtol(argv[1], NULL, 0); Target_Object_Type = strtol(argv[2], NULL, 0); Target_Object_Instance = strtol(argv[3], NULL, 0); Target_Object_Property = strtol(argv[4], NULL, 0); if (argc > 5) Target_Object_Index = strtol(argv[5], NULL, 0); if (Target_Device_Object_Instance >= BACNET_MAX_INSTANCE) { fprintf(stderr, "device-instance=%u - it must be less than %u\r\n", Target_Device_Object_Instance, BACNET_MAX_INSTANCE); return 1; } if (Target_Object_Type > MAX_BACNET_OBJECT_TYPE) { fprintf(stderr, "object-type=%u - it must be less than %u\r\n", Target_Object_Type, MAX_BACNET_OBJECT_TYPE + 1); return 1; } if (Target_Object_Instance > BACNET_MAX_INSTANCE) { fprintf(stderr, "object-instance=%u - it must be less than %u\r\n", Target_Object_Instance, BACNET_MAX_INSTANCE + 1); return 1; } if (Target_Object_Property > MAX_BACNET_PROPERTY_ID) { fprintf(stderr, "object-type=%u - it must be less than %u\r\n", Target_Object_Property, MAX_BACNET_PROPERTY_ID + 1); return 1; } /* setup my info */ Device_Set_Object_Instance_Number(BACNET_MAX_INSTANCE); address_init(); Init_Service_Handlers(); /* configure standard BACnet/IP port */ bip_set_interface("eth0"); /* for linux */ bip_set_port(0xBAC0); if (!bip_init()) return 1; /* configure the timeout values */ last_seconds = time(NULL); timeout_seconds = (Device_APDU_Timeout() / 1000) * Device_Number_Of_APDU_Retries(); /* no need to spam the world */ I_Am_Request = false; /* try to bind with the device */ Send_WhoIs(Target_Device_Object_Instance, Target_Device_Object_Instance); /* loop forever */ for (;;) { /* increment timer - exit if timed out */ current_seconds = time(NULL); /* returns 0 bytes on timeout */ pdu_len = bip_receive(&src, &Rx_Buf[0], MAX_MPDU, timeout); /* process */ if (pdu_len) { npdu_handler(&src, &Rx_Buf[0], pdu_len); } /* at least one second has passed */ if (current_seconds != last_seconds) tsm_timer_milliseconds(((current_seconds - last_seconds) * 1000)); if (Error_Detected) break; if (I_Am_Request) { I_Am_Request = false; iam_send(&Handler_Transmit_Buffer[0]); } else { /* wait until the device is bound, or timeout and quit */ found = address_bind_request(Target_Device_Object_Instance, &max_apdu, &Target_Address); if (found) { if (invoke_id == 0) { invoke_id = Send_Read_Property_Request (Target_Device_Object_Instance, Target_Object_Type, Target_Object_Instance, Target_Object_Property, Target_Object_Index); } else if (tsm_invoke_id_free(invoke_id)) break; } else { /* increment timer - exit if timed out */ elapsed_seconds += (current_seconds - last_seconds); if (elapsed_seconds > timeout_seconds) break; } } /* keep track of time for next check */ last_seconds = current_seconds; } return 0; }