/************************************************************************** * * Copyright (C) 2011 Krzysztof Malorny * * 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 "wp.h" #include "reject.h" #include "wpm.h" /* device object has the handling for all objects */ #include "device.h" #include "handlers.h" /** @file h_wpm.c Handles Write Property Multiple requests. */ /** Handler for a WriteProperty Service request. * @ingroup DSWP * 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 Device_Write_Property_Multiple() succeeds * - an Error if Device_Write_PropertyMultiple() encounters an error * * @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_write_property_multiple( uint8_t * service_request, uint16_t service_len, BACNET_ADDRESS * src, BACNET_CONFIRMED_SERVICE_DATA * service_data) { int len = 0; int apdu_len = 0; int npdu_len = 0; int pdu_len = 0; int decode_len = 0; bool error = false; BACNET_WRITE_PROPERTY_DATA wp_data; BACNET_NPDU_DATA npdu_data; BACNET_ADDRESS my_address; int bytes_sent = 0; if (service_data->segmented_message) { wp_data.error_code = ERROR_CODE_ABORT_SEGMENTATION_NOT_SUPPORTED; len = BACNET_STATUS_ABORT; #if PRINT_ENABLED fprintf(stderr, "WPM: Segmented message. Sending Abort!\n"); #endif goto WPM_ABORT; } /* decode service request */ decode_len = 0; do { /* decode Object Identifier */ len = wpm_decode_object_id(&service_request[decode_len], service_len - decode_len, &wp_data); if (len > 0) { uint8_t tag_number = 0; decode_len += len; /* Opening tag 1 - List of Properties */ if (decode_is_opening_tag_number(&service_request[decode_len++], 1)) { do { /* decode a 'Property Identifier'; (3) an optional 'Property Array Index' */ /* (4) a 'Property Value'; and (5) an optional 'Priority'. */ len = wpm_decode_object_property(&service_request [decode_len], service_len - decode_len, &wp_data); if (len > 0) { decode_len += len; #if PRINT_ENABLED fprintf(stderr, "WPM: type=%lu instance=%lu property=%lu priority=%lu index=%ld\n", (unsigned long) wp_data.object_type, (unsigned long) wp_data.object_instance, (unsigned long) wp_data.object_property, (unsigned long) wp_data.priority, (long) wp_data.array_index); #endif if (Device_Write_Property(&wp_data) == false) { error = true; len = BACNET_STATUS_ERROR; goto WPM_ABORT; } } else { #if PRINT_ENABLED fprintf(stderr, "WPM: Bad Encoding!\n"); #endif error = true; goto WPM_ABORT; } /* Closing tag 1 - List of Properties */ if (decode_is_closing_tag_number(&service_request [decode_len], 1)) { tag_number = 1; decode_len++; } else tag_number = 0; /* it was not tag 1, decode next Property Identifier ... */ } while (tag_number != 1); /* end decoding List of Properties for "that" object */ if (error) { goto WPM_ABORT; } } } else { #if PRINT_ENABLED fprintf(stderr, "WPM: Bad Encoding!\n"); #endif error = true; goto WPM_ABORT; } } while (decode_len < service_len); WPM_ABORT: /* 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); apdu_len = 0; /* handle any errors */ 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(wp_data.error_code), true); #if PRINT_ENABLED fprintf(stderr, "WPM: Sending Abort!\n"); #endif } else if (len == BACNET_STATUS_ERROR) { apdu_len = wpm_error_ack_encode_apdu(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id, &wp_data); #if PRINT_ENABLED fprintf(stderr, "WPM: 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(wp_data.error_code)); #if PRINT_ENABLED fprintf(stderr, "WPM: Sending Reject!\n"); #endif } } else { apdu_len = wpm_ack_encode_apdu_init(&Handler_Transmit_Buffer[npdu_len], service_data->invoke_id); #if PRINT_ENABLED fprintf(stderr, "WPM: Sending Ack!\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 }