/************************************************************************** * * Copyright (C) 2009 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 #include "config.h" #include "txbuf.h" #include "bacdef.h" #include "bacdcode.h" #include "bacerror.h" #include "apdu.h" #include "npdu.h" #include "abort.h" #include "event.h" #include "getevent.h" #include "handlers.h" /** @file h_getevent.c Handles Get Event Information request. */ static get_event_info_function Get_Event_Info[MAX_BACNET_OBJECT_TYPE]; /** print eventState */ void ge_ack_print_data( BACNET_GET_EVENT_INFORMATION_DATA * data, uint32_t device_id) { BACNET_GET_EVENT_INFORMATION_DATA *act_data = data; const char* state_strs[] = {"NO", "FA", "ON", "HL", "LL"}; printf("DeviceID\tType\tInstance\teventState\n"); printf("--------------- ------- --------------- ---------------\n"); int count = 0; while (act_data) { printf("%u\t\t%u\t%u\t\t%s\n", device_id, act_data->objectIdentifier.type, act_data->objectIdentifier.instance, state_strs[data->eventState] ); act_data = act_data->next; count++; } printf("\n%u\t Total\n",count); } void handler_get_event_information_set( BACNET_OBJECT_TYPE object_type, get_event_info_function pFunction) { if (object_type < MAX_BACNET_OBJECT_TYPE) { Get_Event_Info[object_type] = pFunction; } } void handler_get_event_information( uint8_t * service_request, uint16_t service_len, BACNET_ADDRESS * src, BACNET_CONFIRMED_SERVICE_DATA * service_data) { int len = 0; int pdu_len = 0; int apdu_len = 0; BACNET_NPDU_DATA npdu_data; bool error = false; bool more_events = false; int bytes_sent = 0; BACNET_ERROR_CLASS error_class = ERROR_CLASS_OBJECT; BACNET_ERROR_CODE error_code = ERROR_CODE_UNKNOWN_OBJECT; BACNET_ADDRESS my_address; BACNET_OBJECT_ID object_id; unsigned i = 0, j = 0; /* counter */ BACNET_GET_EVENT_INFORMATION_DATA getevent_data; int valid_event = 0; /* initialize type of 'Last Received Object Identifier' using max value */ object_id.type = MAX_BACNET_OBJECT_TYPE; /* encode the NPDU portion of the packet */ datalink_get_my_address(&my_address); npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL); pdu_len = npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address, &npdu_data); if (service_data->segmented_message) { /* we don't support segmentation - send an abort */ len = abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len], service_data->invoke_id, ABORT_REASON_SEGMENTATION_NOT_SUPPORTED, true); #if PRINT_ENABLED fprintf(stderr, "GetEventInformation: " "Segmented message. Sending Abort!\n"); #endif goto GET_EVENT_ABORT; } len = getevent_decode_service_request(service_request, service_len, &object_id); if (len < 0) { /* bad decoding - send an abort */ len = abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len], service_data->invoke_id, ABORT_REASON_OTHER, true); #if PRINT_ENABLED fprintf(stderr, "GetEventInformation: Bad Encoding. Sending Abort!\n"); #endif goto GET_EVENT_ABORT; } len = getevent_ack_encode_apdu_init(&Handler_Transmit_Buffer[pdu_len], sizeof(Handler_Transmit_Buffer) - pdu_len, service_data->invoke_id); if (len <= 0) { error = true; goto GET_EVENT_ERROR; } pdu_len += len; apdu_len = len; for (i = 0; i < MAX_BACNET_OBJECT_TYPE; i++) { if (Get_Event_Info[i]) { for (j = 0; j < 0xffff; j++) { valid_event = Get_Event_Info[i] (j, &getevent_data); if (valid_event > 0) { /* encode GetEvent_data only when type of object_id has max value */ if (object_id.type != MAX_BACNET_OBJECT_TYPE) { if ((object_id.type == getevent_data.objectIdentifier.type) && (object_id.instance == getevent_data.objectIdentifier.instance)) { /* found 'Last Received Object Identifier' so should set type of object_id to max value */ object_id.type = MAX_BACNET_OBJECT_TYPE; } continue; } getevent_data.next = NULL; len = getevent_ack_encode_apdu_data(&Handler_Transmit_Buffer [pdu_len], sizeof(Handler_Transmit_Buffer) - pdu_len, &getevent_data); if (len <= 0) { error = true; goto GET_EVENT_ERROR; } apdu_len += len; if (apdu_len >= service_data->max_resp - 2) { /* Device must be able to fit minimum one event information. Length of one event informations needs more than 50 octets. */ if (service_data->max_resp < 128) { len = BACNET_STATUS_ABORT; error = true; goto GET_EVENT_ERROR; } else more_events = true; break; } else pdu_len += len; } else if (valid_event < 0) { break; } } } } len = getevent_ack_encode_apdu_end(&Handler_Transmit_Buffer[pdu_len], sizeof(Handler_Transmit_Buffer) - pdu_len, more_events); if (len <= 0) { error = true; goto GET_EVENT_ERROR; } #if PRINT_ENABLED fprintf(stderr, "Got a GetEventInformation request: Sending Ack!\n"); #endif GET_EVENT_ERROR: if (error) { pdu_len = npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address, &npdu_data); if (len == -2) { /* BACnet APDU too small to fit data, so proper response is Abort */ len = abort_encode_apdu(&Handler_Transmit_Buffer[pdu_len], service_data->invoke_id, ABORT_REASON_SEGMENTATION_NOT_SUPPORTED, true); #if PRINT_ENABLED fprintf(stderr, "GetEventInformation: " "Reply too big to fit into APDU!\n"); #endif } else { len = bacerror_encode_apdu(&Handler_Transmit_Buffer[pdu_len], service_data->invoke_id, SERVICE_CONFIRMED_READ_PROPERTY, error_class, error_code); #if PRINT_ENABLED fprintf(stderr, "GetEventInformation: Sending Error!\n"); #endif } } GET_EVENT_ABORT: pdu_len += len; bytes_sent = datalink_send_pdu(src, &npdu_data, &Handler_Transmit_Buffer[0], pdu_len); #if PRINT_ENABLED if (bytes_sent <= 0) fprintf(stderr, "Failed to send PDU (%s)!\n", strerror(errno)); #endif return; }