skarg
335 lines
12 KiB
C
335 lines
12 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2008 Steve Karg <skarg@users.sourceforge.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*********************************************************************/
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include "config.h"
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#include "config.h"
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#include "txbuf.h"
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#include "bacdef.h"
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#include "bacdcode.h"
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#include "address.h"
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#include "tsm.h"
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#include "npdu.h"
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#include "apdu.h"
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#include "device.h"
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#include "datalink.h"
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#include "bactext.h"
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#include "rpm.h"
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/* some demo stuff needed */
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#include "handlers.h"
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#include "txbuf.h"
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/* returns the number of bytes decoded, or -1 on error */
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/* note: initial the linked list of read_access_data */
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static int rpm_ack_decode_service_request(
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uint8_t * apdu,
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int apdu_len, /* total length of the apdu */
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BACNET_READ_ACCESS_DATA * read_access_data)
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{
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int decoded_len = 0; /* return value */
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uint32_t error_value = 0; /* decoded error value */
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int len = 0; /* number of bytes returned from decoding */
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uint8_t tag_number = 0; /* decoded tag number */
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uint32_t len_value = 0; /* decoded length value */
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BACNET_READ_ACCESS_DATA *rpm_object;
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BACNET_READ_ACCESS_DATA *old_rpm_object;
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BACNET_PROPERTY_REFERENCE *rpm_property;
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BACNET_PROPERTY_REFERENCE *old_rpm_property;
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BACNET_APPLICATION_DATA_VALUE *value;
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BACNET_APPLICATION_DATA_VALUE *old_value;
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rpm_object = read_access_data;
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old_rpm_object = rpm_object;
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while (rpm_object && apdu_len) {
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len =
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rpm_ack_decode_object_id(apdu, apdu_len, &rpm_object->object_type,
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&rpm_object->object_instance);
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if (len <= 0) {
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old_rpm_object->next = NULL;
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free(rpm_object);
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break;
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}
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decoded_len += len;
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apdu_len -= len;
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apdu += len;
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rpm_property = calloc(1, sizeof(BACNET_PROPERTY_REFERENCE));
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rpm_object->listOfProperties = rpm_property;
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old_rpm_property = rpm_property;
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while (rpm_property && apdu_len) {
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len =
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rpm_ack_decode_object_property(apdu, apdu_len,
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&rpm_property->propertyIdentifier,
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&rpm_property->propertyArrayIndex);
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if (len <= 0) {
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old_rpm_property->next = NULL;
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if (rpm_object->listOfProperties == rpm_property) {
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/* was this the only property in the list? */
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rpm_object->listOfProperties = NULL;
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}
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free(rpm_property);
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break;
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}
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decoded_len += len;
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apdu_len -= len;
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apdu += len;
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if (apdu_len && decode_is_opening_tag_number(apdu, 4)) {
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/* propertyValue */
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decoded_len++;
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apdu_len--;
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apdu++;
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/* note: if this is an array, there will be
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more than one element to decode */
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value = calloc(1, sizeof(BACNET_APPLICATION_DATA_VALUE));
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rpm_property->value = value;
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old_value = value;
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while (value && (apdu_len > 0)) {
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if (IS_CONTEXT_SPECIFIC(*apdu)) {
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len =
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bacapp_decode_context_data(apdu, apdu_len, value,
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rpm_property->propertyIdentifier);
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} else {
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len =
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bacapp_decode_application_data(apdu, apdu_len,
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value);
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}
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decoded_len += len;
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apdu_len -= len;
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apdu += len;
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if (apdu_len && decode_is_closing_tag_number(apdu, 4)) {
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decoded_len++;
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apdu_len--;
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apdu++;
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break;
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} else {
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/* nothing decoded and no closing tag, so malformed */
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if (len == 0) {
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return -1;
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}
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old_value = value;
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value =
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calloc(1, sizeof(BACNET_APPLICATION_DATA_VALUE));
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old_value->next = value;
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}
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}
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} else if (apdu_len && decode_is_opening_tag_number(apdu, 5)) {
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/* propertyAccessError */
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decoded_len++;
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apdu_len--;
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apdu++;
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/* decode the class and code sequence */
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len =
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decode_tag_number_and_value(apdu, &tag_number, &len_value);
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decoded_len += len;
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apdu_len -= len;
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apdu += len;
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/* FIXME: we could validate that the tag is enumerated... */
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len = decode_enumerated(apdu, len_value, &error_value);
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rpm_property->error.error_class = error_value;
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decoded_len += len;
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apdu_len -= len;
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apdu += len;
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len =
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decode_tag_number_and_value(apdu, &tag_number, &len_value);
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decoded_len += len;
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apdu_len -= len;
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apdu += len;
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/* FIXME: we could validate that the tag is enumerated... */
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len = decode_enumerated(apdu, len_value, &error_value);
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rpm_property->error.error_code = error_value;
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decoded_len += len;
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apdu_len -= len;
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apdu += len;
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if (apdu_len && decode_is_closing_tag_number(apdu, 5)) {
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decoded_len++;
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apdu_len--;
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apdu++;
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}
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}
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old_rpm_property = rpm_property;
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rpm_property = calloc(1, sizeof(BACNET_PROPERTY_REFERENCE));
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old_rpm_property->next = rpm_property;
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}
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len = rpm_decode_object_end(apdu, apdu_len);
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if (len) {
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decoded_len += len;
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apdu_len -= len;
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apdu += len;
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}
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if (apdu_len) {
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old_rpm_object = rpm_object;
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rpm_object = calloc(1, sizeof(BACNET_READ_ACCESS_DATA));
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old_rpm_object->next = rpm_object;
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}
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}
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return decoded_len;
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}
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/* for debugging... */
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static void PrintReadPropertyMultipleData(
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BACNET_READ_ACCESS_DATA * rpm_data)
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{
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BACNET_PROPERTY_REFERENCE *listOfProperties;
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BACNET_APPLICATION_DATA_VALUE *value;
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bool array_value = false;
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if (rpm_data) {
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#if PRINT_ENABLED
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fprintf(stdout, "%s #%u\r\n",
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bactext_object_type_name(rpm_data->object_type),
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rpm_data->object_instance);
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fprintf(stdout, "{\r\n");
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#endif
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listOfProperties = rpm_data->listOfProperties;
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while (listOfProperties) {
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#if PRINT_ENABLED
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if (listOfProperties->propertyIdentifier < 512) {
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fprintf(stdout, " %s: ",
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bactext_property_name(listOfProperties->
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propertyIdentifier));
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} else {
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fprintf(stdout, " proprietary %u: ",
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listOfProperties->propertyIdentifier);
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}
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#endif
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if (listOfProperties->propertyArrayIndex != BACNET_ARRAY_ALL) {
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#if PRINT_ENABLED
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fprintf(stdout, "[%d]", listOfProperties->propertyArrayIndex);
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#endif
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}
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value = listOfProperties->value;
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if (value) {
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#if PRINT_ENABLED
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if (value->next) {
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fprintf(stdout, "{");
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array_value = true;
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} else {
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array_value = false;
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}
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#endif
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while (value) {
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bacapp_print_value(stdout, value,
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listOfProperties->propertyIdentifier);
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#if PRINT_ENABLED
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if (value->next) {
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fprintf(stdout, ",\r\n ");
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} else {
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if (array_value) {
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fprintf(stdout, "}\r\n");
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} else {
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fprintf(stdout, "\r\n");
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}
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}
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#endif
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value = value->next;
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}
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} else {
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#if PRINT_ENABLED
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/* AccessError */
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fprintf(stdout, "BACnet Error: %s: %s\r\n",
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bactext_error_class_name((int) listOfProperties->
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error.error_class),
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bactext_error_code_name((int) listOfProperties->
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error.error_code));
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#endif
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}
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listOfProperties = listOfProperties->next;
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}
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#if PRINT_ENABLED
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fprintf(stdout, "}\r\n");
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#endif
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}
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}
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void handler_read_property_multiple_ack(
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uint8_t * service_request,
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uint16_t service_len,
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BACNET_ADDRESS * src,
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BACNET_CONFIRMED_SERVICE_ACK_DATA * service_data)
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{
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int len = 0;
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BACNET_READ_ACCESS_DATA *rpm_data;
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BACNET_READ_ACCESS_DATA *old_rpm_data;
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BACNET_PROPERTY_REFERENCE *rpm_property;
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BACNET_PROPERTY_REFERENCE *old_rpm_property;
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BACNET_APPLICATION_DATA_VALUE *value;
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BACNET_APPLICATION_DATA_VALUE *old_value;
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(void) src;
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(void) service_data; /* we could use these... */
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rpm_data = calloc(1, sizeof(BACNET_READ_ACCESS_DATA));
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if (rpm_data) {
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len =
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rpm_ack_decode_service_request(service_request, service_len,
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rpm_data);
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}
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#if 1
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fprintf(stderr, "Received Read-Property-Multiple Ack!\n");
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#endif
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if (len > 0) {
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while (rpm_data) {
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PrintReadPropertyMultipleData(rpm_data);
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rpm_property = rpm_data->listOfProperties;
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while (rpm_property) {
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value = rpm_property->value;
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while (value) {
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old_value = value;
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value = value->next;
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free(old_value);
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}
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old_rpm_property = rpm_property;
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rpm_property = rpm_property->next;
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free(old_rpm_property);
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}
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old_rpm_data = rpm_data;
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rpm_data = rpm_data->next;
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free(old_rpm_data);
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}
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} else {
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#if 1
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fprintf(stderr, "RPM Ack Malformed! Freeing memory...\n");
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#endif
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while (rpm_data) {
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rpm_property = rpm_data->listOfProperties;
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while (rpm_property) {
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value = rpm_property->value;
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while (value) {
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old_value = value;
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value = value->next;
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free(old_value);
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}
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old_rpm_property = rpm_property;
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rpm_property = rpm_property->next;
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free(old_rpm_property);
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}
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old_rpm_data = rpm_data;
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rpm_data = rpm_data->next;
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free(old_rpm_data);
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}
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}
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}
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