/** Handler for a ReadPropertyMultiple Service request. * @ingroup DSRPM * This handler will be invoked by apdu_handler() if it has been enabled * by a call to apdu_set_confirmed_handler(). * This handler builds a response packet, which is * - an Abort if * - the message is segmented * - if decoding fails * - if the response would be too large * - the result from each included read request, if it succeeds * - an Error if processing fails for all, or individual errors if only some fail, * or there isn't enough room in the APDU to fit the data. * * @param service_request [in] The contents of the service request. * @param service_len [in] The length of the service_request. * @param src [in] BACNET_ADDRESS of the source of the message * @param service_data [in] The BACNET_CONFIRMED_SERVICE_DATA information * decoded from the APDU header of this message. */ void handler_read_property_multiple( uint8_t * service_request, uint16_t service_len, BACNET_ADDRESS * src, BACNET_CONFIRMED_SERVICE_DATA * service_data) { int len = 0; uint16_t copy_len = 0; uint16_t decode_len = 0; int pdu_len = 0; BACNET_NPDU_DATA npdu_data; int bytes_sent; BACNET_ADDRESS my_address; BACNET_RPM_DATA rpmdata; int apdu_len = 0; int npdu_len = 0; int error = 0; /* jps_debug - see if we are utilizing all the buffer */ /* memset(&Handler_Transmit_Buffer[0], 0xff, sizeof(Handler_Transmit_Buffer)); */ /* encode the NPDU portion of the packet */ datalink_get_my_address(&my_address); npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL); npdu_len = npdu_encode_pdu(&Handler_Transmit_Buffer[0], src, &my_address, &npdu_data); if (service_data->segmented_message) { rpmdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; error = BACNET_STATUS_ABORT; #if PRINT_ENABLED fprintf(stderr, "RPM: Segmented message. Sending Abort!\r\n"); #endif goto RPM_FAILURE; } /* decode apdu request & encode apdu reply encode complex ack, invoke id, service choice */ apdu_len = rpm_ack_encode_apdu_init(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id); for (;;) { /* Start by looking for an object ID */ len = rpm_decode_object_id(&service_request[decode_len], service_len - decode_len, &rpmdata); if (len >= 0) { /* Got one so skip to next stage */ decode_len += len; } else { /* bad encoding - skip to error/reject/abort handling */ #if PRINT_ENABLED fprintf(stderr, "RPM: Bad Encoding.\n"); #endif error = len; goto RPM_FAILURE; } /* Test for case of indefinite Device object instance */ if ((rpmdata.object_type == OBJECT_DEVICE) && (rpmdata.object_instance == BACNET_MAX_INSTANCE)) { rpmdata.object_instance = Device_Object_Instance_Number(); } /* Stick this object id into the reply - if it will fit */ len = rpm_ack_encode_apdu_object_begin(&Temp_Buf[0], &rpmdata); copy_len = memcopy(&Handler_Transmit_Buffer[npdu_len], &Temp_Buf[0], apdu_len, len, MAX_APDU); if (copy_len == 0) { #if PRINT_ENABLED fprintf(stderr, "RPM: Response too big!\r\n"); #endif rpmdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; error = BACNET_STATUS_ABORT; goto RPM_FAILURE; } apdu_len += copy_len; /* do each property of this object of the RPM request */ for (;;) { /* Fetch a property */ len = rpm_decode_object_property(&service_request[decode_len], service_len - decode_len, &rpmdata); if (len < 0) { /* bad encoding - skip to error/reject/abort handling */ #if PRINT_ENABLED fprintf(stderr, "RPM: Bad Encoding.\n"); #endif error = len; goto RPM_FAILURE; } decode_len += len; /* handle the special properties */ if ((rpmdata.object_property == PROP_ALL) || (rpmdata.object_property == PROP_REQUIRED) || (rpmdata.object_property == PROP_OPTIONAL)) { struct special_property_list_t property_list; unsigned property_count = 0; unsigned index = 0; BACNET_PROPERTY_ID special_object_property; if (rpmdata.array_index != BACNET_ARRAY_ALL) { /* No array index options for this special property. Encode error for this object property response */ len = rpm_ack_encode_apdu_object_property(&Temp_Buf[0], rpmdata.object_property, rpmdata.array_index); copy_len = memcopy(&Handler_Transmit_Buffer[npdu_len], &Temp_Buf[0], apdu_len, len, MAX_APDU); if (copy_len == 0) { #if PRINT_ENABLED fprintf(stderr, "RPM: Too full to encode property!\r\n"); #endif rpmdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; error = BACNET_STATUS_ABORT; goto RPM_FAILURE; } apdu_len += len; len = rpm_ack_encode_apdu_object_property_error(&Temp_Buf[0], ERROR_CLASS_PROPERTY, ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY); copy_len = memcopy(&Handler_Transmit_Buffer[npdu_len], &Temp_Buf[0], apdu_len, len, MAX_APDU); if (copy_len == 0) { #if PRINT_ENABLED fprintf(stderr, "RPM: Too full to encode error!\r\n"); #endif rpmdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; error = BACNET_STATUS_ABORT; goto RPM_FAILURE; } apdu_len += len; } else { special_object_property = rpmdata.object_property; Device_Objects_Property_List(rpmdata.object_type, &property_list); property_count = RPM_Object_Property_Count(&property_list, special_object_property); if (property_count == 0) { /* handle the error code - but use the special property */ len = RPM_Encode_Property(&Handler_Transmit_Buffer [npdu_len], (uint16_t) apdu_len, MAX_APDU, &rpmdata); if (len > 0) { apdu_len += len; } else { #if PRINT_ENABLED fprintf(stderr, "RPM: Too full for special property!\r\n"); #endif error = len; goto RPM_FAILURE; } } else { for (index = 0; index < property_count; index++) { rpmdata.object_property = RPM_Object_Property(&property_list, special_object_property, index); len = RPM_Encode_Property(&Handler_Transmit_Buffer [npdu_len], (uint16_t) apdu_len, MAX_APDU, &rpmdata); if (len > 0) { apdu_len += len; } else { #if PRINT_ENABLED fprintf(stderr, "RPM: Too full for property!\r\n"); #endif error = len; goto RPM_FAILURE; } } } } } else { /* handle an individual property */ len = RPM_Encode_Property(&Handler_Transmit_Buffer[npdu_len], (uint16_t) apdu_len, MAX_APDU, &rpmdata); if (len > 0) { apdu_len += len; } else { #if PRINT_ENABLED fprintf(stderr, "RPM: Too full for individual property!\r\n"); #endif error = len; goto RPM_FAILURE; } } if (decode_is_closing_tag_number(&service_request[decode_len], 1)) { /* Reached end of property list so cap the result list */ decode_len++; len = rpm_ack_encode_apdu_object_end(&Temp_Buf[0]); copy_len = memcopy(&Handler_Transmit_Buffer[npdu_len], &Temp_Buf[0], apdu_len, len, MAX_APDU); if (copy_len == 0) { #if PRINT_ENABLED fprintf(stderr, "RPM: Too full to encode object end!\r\n"); #endif rpmdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; error = BACNET_STATUS_ABORT; goto RPM_FAILURE; } else { apdu_len += copy_len; } break; /* finished with this property list */ } } if (decode_len >= service_len) { /* Reached the end so finish up */ break; } } if (apdu_len > service_data->max_resp) { /* too big for the sender - send an abort */ rpmdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; error = BACNET_STATUS_ABORT; #if PRINT_ENABLED fprintf(stderr, "RPM: Message too large. Sending Abort!\n"); #endif goto RPM_FAILURE; } RPM_FAILURE: if (error) { if (error == BACNET_STATUS_ABORT) { apdu_len = abort_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, abort_convert_error_code(rpmdata.error_code), true); #if PRINT_ENABLED fprintf(stderr, "RPM: Sending Abort!\n"); #endif } else if (error == BACNET_STATUS_ERROR) { apdu_len = bacerror_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, SERVICE_CONFIRMED_READ_PROP_MULTIPLE, rpmdata.error_class, rpmdata.error_code); #if PRINT_ENABLED fprintf(stderr, "RPM: Sending Error!\n"); #endif } else if (error == BACNET_STATUS_REJECT) { apdu_len = reject_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, reject_convert_error_code(rpmdata.error_code)); #if PRINT_ENABLED fprintf(stderr, "RPM: Sending Reject!\n"); #endif } } pdu_len = apdu_len + npdu_len; bytes_sent = datalink_send_pdu(src, &npdu_data, &Handler_Transmit_Buffer[0], pdu_len); #if PRINT_ENABLED if (bytes_sent <= 0) { fprintf(stderr, "RPM: Failed to send PDU (%s)!\n", strerror(errno)); } #else bytes_sent = bytes_sent; #endif }
/** Handler for a COV Subscribe Service request. * @ingroup DSCOV * This handler will be invoked by apdu_handler() if it has been enabled * by a call to apdu_set_confirmed_handler(). * This handler builds a response packet, which is * - an Abort if * - the message is segmented * - if decoding fails * - an ACK, if cov_subscribe() succeeds * - an Error if cov_subscribe() fails * * @param service_request [in] The contents of the service request. * @param service_len [in] The length of the service_request. * @param src [in] BACNET_ADDRESS of the source of the message * @param service_data [in] The BACNET_CONFIRMED_SERVICE_DATA information * decoded from the APDU header of this message. */ void handler_cov_subscribe( uint8_t * service_request, uint16_t service_len, BACNET_ADDRESS * src, BACNET_CONFIRMED_SERVICE_DATA * service_data) { BACNET_SUBSCRIBE_COV_DATA cov_data; int len = 0; int pdu_len = 0; int npdu_len = 0; int apdu_len = 0; BACNET_NPDU_DATA npdu_data; bool success = false; int bytes_sent = 0; BACNET_ADDRESS my_address; bool error = false; /* initialize a common abort code */ cov_data.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; /* encode the NPDU portion of the packet */ datalink_get_my_address(&my_address); npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL); npdu_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 = BACNET_STATUS_ABORT; #if PRINT_ENABLED fprintf(stderr, "SubscribeCOV: Segmented message. Sending Abort!\n"); #endif error = true; goto COV_ABORT; } len = cov_subscribe_decode_service_request(service_request, service_len, &cov_data); #if PRINT_ENABLED if (len <= 0) fprintf(stderr, "SubscribeCOV: Unable to decode Request!\n"); #endif if (len < 0) { error = true; goto COV_ABORT; } cov_data.error_class = ERROR_CLASS_OBJECT; cov_data.error_code = ERROR_CODE_UNKNOWN_OBJECT; success = cov_subscribe(src, &cov_data, &cov_data.error_class, &cov_data.error_code); if (success) { apdu_len = encode_simple_ack(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, SERVICE_CONFIRMED_SUBSCRIBE_COV); #if PRINT_ENABLED fprintf(stderr, "SubscribeCOV: Sending Simple Ack!\n"); #endif } else { len = BACNET_STATUS_ERROR; error = true; #if PRINT_ENABLED fprintf(stderr, "SubscribeCOV: Sending Error!\n"); #endif } COV_ABORT: if (error) { if (len == BACNET_STATUS_ABORT) { apdu_len = abort_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, abort_convert_error_code(cov_data.error_code), true); #if PRINT_ENABLED fprintf(stderr, "SubscribeCOV: Sending Abort!\n"); #endif } else if (len == BACNET_STATUS_ERROR) { apdu_len = bacerror_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, SERVICE_CONFIRMED_SUBSCRIBE_COV, cov_data.error_class, cov_data.error_code); #if PRINT_ENABLED fprintf(stderr, "SubscribeCOV: Sending Error!\n"); #endif } else if (len == BACNET_STATUS_REJECT) { apdu_len = reject_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, reject_convert_error_code(cov_data.error_code)); #if PRINT_ENABLED fprintf(stderr, "SubscribeCOV: Sending Reject!\n"); #endif } } pdu_len = npdu_len + apdu_len; bytes_sent = datalink_send_pdu(src, &npdu_data, &Handler_Transmit_Buffer[0], pdu_len); #if PRINT_ENABLED if (bytes_sent <= 0) fprintf(stderr, "SubscribeCOV: Failed to send PDU (%s)!\n", strerror(errno)); #else bytes_sent = bytes_sent; #endif return; }
/** Handler for a ReadProperty Service request. * @ingroup DSRP * This handler will be invoked by apdu_handler() if it has been enabled * by a call to apdu_set_confirmed_handler(). * This handler builds a response packet, which is * - an Abort if * - the message is segmented * - if decoding fails * - if the response would be too large * - the result from Device_Read_Property(), if it succeeds * - an Error if Device_Read_Property() fails * or there isn't enough room in the APDU to fit the data. * * @param service_request [in] The contents of the service request. * @param service_len [in] The length of the service_request. * @param src [in] BACNET_ADDRESS of the source of the message * @param service_data [in] The BACNET_CONFIRMED_SERVICE_DATA information * decoded from the APDU header of this message. */ void handler_read_property( uint8_t * service_request, uint16_t service_len, BACNET_ADDRESS * src, BACNET_CONFIRMED_SERVICE_DATA * service_data) { BACNET_READ_PROPERTY_DATA rpdata; int len = 0; int pdu_len = 0; int apdu_len = -1; int npdu_len = -1; BACNET_NPDU_DATA npdu_data; bool error = true; /* assume that there is an error */ int bytes_sent = 0; BACNET_ADDRESS my_address; /* configure default error code as an abort since it is common */ rpdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; /* encode the NPDU portion of the packet */ datalink_get_my_address(&my_address); npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL); npdu_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 = BACNET_STATUS_ABORT; #if PRINT_ENABLED fprintf(stderr, "RP: Segmented message. Sending Abort!\n"); #endif goto RP_FAILURE; } len = rp_decode_service_request(service_request, service_len, &rpdata); #if PRINT_ENABLED if (len <= 0) { fprintf(stderr, "RP: Unable to decode Request!\n"); } #endif if (len < 0) { /* bad decoding - skip to error/reject/abort handling */ error = true; #if PRINT_ENABLED fprintf(stderr, "RP: Bad Encoding.\n"); #endif goto RP_FAILURE; } /* Test for case of indefinite Device object instance */ if ((rpdata.object_type == OBJECT_DEVICE) && (rpdata.object_instance == BACNET_MAX_INSTANCE)) { rpdata.object_instance = Device_Object_Instance_Number(); } apdu_len = rp_ack_encode_apdu_init(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, &rpdata); /* configure our storage */ rpdata.application_data = &Handler_Transmit_Buffer[npdu_len + apdu_len]; rpdata.application_data_len = sizeof(Handler_Transmit_Buffer) - (npdu_len + apdu_len); len = Device_Read_Property(&rpdata); if (len >= 0) { apdu_len += len; len = rp_ack_encode_apdu_object_property_end(&Handler_Transmit_Buffer [npdu_len + apdu_len]); apdu_len += len; if (apdu_len > service_data->max_resp) { /* too big for the sender - send an abort * Setting of error code needed here as read property processing may * have overriden the default set at start */ rpdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; len = BACNET_STATUS_ABORT; #if PRINT_ENABLED fprintf(stderr, "RP: Message too large.\n"); #endif } else { #if PRINT_ENABLED fprintf(stderr, "RP: Sending Ack!\n"); #endif error = false; } } else { #if PRINT_ENABLED fprintf(stderr, "RP: Device_Read_Property: "); if (len == BACNET_STATUS_ABORT) { fprintf(stderr, "Abort!\n"); } else if (len == BACNET_STATUS_ERROR) { fprintf(stderr, "Error!\n"); } else if (len == BACNET_STATUS_REJECT) { fprintf(stderr, "Reject!\n"); } else { fprintf(stderr, "Unknown Len=%d\n", len); } #endif } RP_FAILURE: if (error) { if (len == BACNET_STATUS_ABORT) { apdu_len = abort_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, abort_convert_error_code(rpdata.error_code), true); #if PRINT_ENABLED fprintf(stderr, "RP: Sending Abort!\n"); #endif } else if (len == BACNET_STATUS_ERROR) { apdu_len = bacerror_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, SERVICE_CONFIRMED_READ_PROPERTY, rpdata.error_class, rpdata.error_code); #if PRINT_ENABLED fprintf(stderr, "RP: Sending Error!\n"); #endif } else if (len == BACNET_STATUS_REJECT) { apdu_len = reject_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, reject_convert_error_code(rpdata.error_code)); #if PRINT_ENABLED fprintf(stderr, "RP: Sending Reject!\n"); #endif } } pdu_len = npdu_len + apdu_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)); } #else bytes_sent = bytes_sent; #endif return; }
void handler_read_property_ack2( BACNET_ADDRESS * src, BACNET_CONFIRMED_SERVICE_ACK_DATA * service_ack_data, uint8_t * apdu, uint16_t apdu_len) { BACNET_READ_PROPERTY_DATA rpdata; int len = 0; int pdu_len = 0; int npdu_len = -1; BACNET_NPDU_DATA npdu_data; bool error = true; /* assume that there is an error */ int bytes_sent = 0; BACNET_ADDRESS my_address; fprintf(stderr, "Entering handler_RP2 in h_rp.c.\n"); /* configure default error code as an abort since it is common */ rpdata.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; /* encode the NPDU portion of the packet */ /* returns my IP addr (4 bytes) and port num (2bytes)*/ datalink_get_my_address(&my_address); //set up NPCI header field npdu_data npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL); npdu_len = npdu_encode_pdu(&Handler_Transmit_Buffer_ACK[0], src, &my_address,//src!! &npdu_data);//set up handler transmit buffer by injecting npci/src/dst addr info if (service_ack_data->segmented_message) { /* we don't support segmentation - send an abort */ len = BACNET_STATUS_ABORT; #if PRINT_ENABLED fprintf(stderr, "RP: Segmented message. Sending Abort!\n"); #endif goto RP_FAILURE; } int i; for (i = 0; i < apdu_len; ++i){ Handler_Transmit_Buffer_ACK[npdu_len + i] = apdu[i]; } fprintf(stderr, "Finish copying apdu to ack buffer in h_rp.c.\n"); RP_FAILURE: if (error) { if (len == BACNET_STATUS_ABORT) { apdu_len = abort_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_ack_data->invoke_id, abort_convert_error_code(rpdata.error_code), true); #if PRINT_ENABLED fprintf(stderr, "RP: Sending Abort!\n"); #endif } else if (len == BACNET_STATUS_ERROR) { apdu_len = bacerror_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_ack_data->invoke_id, SERVICE_CONFIRMED_READ_PROPERTY, rpdata.error_class, rpdata.error_code); #if PRINT_ENABLED fprintf(stderr, "RP: Sending Error!\n"); #endif } else if (len == BACNET_STATUS_REJECT) { apdu_len = reject_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_ack_data->invoke_id, reject_convert_error_code(rpdata.error_code)); #if PRINT_ENABLED fprintf(stderr, "RP: Sending Reject!\n"); #endif } } pdu_len = npdu_len + apdu_len; bytes_sent = datalink_send_pdu(rp_serv_addr, &npdu_data, &Handler_Transmit_Buffer_ACK[0], pdu_len); #if PRINT_ENABLED if (bytes_sent <= 0) { fprintf(stderr, "Failed to send PDU (%s)!\n", strerror(errno)); }else{ fprintf(stderr, "sent pdu back to server in h_rp.c.\n"); } #else bytes_sent = bytes_sent; #endif return; }