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bacnet-stack/demo/object/osv.c

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/**************************************************************************
*
* Copyright (C) 2015 Nikola Jelic <nikola.jelic@euroicc.com>
*
* 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.
*
*********************************************************************/
/* OctetString Value Objects - customize for your use */
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "bacdef.h"
#include "bacdcode.h"
#include "bacenum.h"
#include "bacapp.h"
#include "bactext.h"
#include "config.h" /* the custom stuff */
#include "device.h"
#include "handlers.h"
#include "osv.h"
#ifndef MAX_OCTETSTRING_VALUES
#define MAX_OCTETSTRING_VALUES 4
#endif
OCTETSTRING_VALUE_DESCR AV_Descr[MAX_OCTETSTRING_VALUES];
/* These three arrays are used by the ReadPropertyMultiple handler */
static const int OctetString_Value_Properties_Required[] = {
PROP_OBJECT_IDENTIFIER,
PROP_OBJECT_NAME,
PROP_OBJECT_TYPE,
PROP_PRESENT_VALUE,
PROP_STATUS_FLAGS,
-1
};
static const int OctetString_Value_Properties_Optional[] = {
PROP_EVENT_STATE,
PROP_OUT_OF_SERVICE,
PROP_DESCRIPTION,
-1
};
static const int OctetString_Value_Properties_Proprietary[] = {
-1
};
void OctetString_Value_Property_Lists(const int **pRequired,
const int **pOptional,
const int **pProprietary)
{
if (pRequired)
*pRequired = OctetString_Value_Properties_Required;
if (pOptional)
*pOptional = OctetString_Value_Properties_Optional;
if (pProprietary)
*pProprietary = OctetString_Value_Properties_Proprietary;
return;
}
void OctetString_Value_Init(void)
{
unsigned i;
for (i = 0; i < MAX_OCTETSTRING_VALUES; i++) {
memset(&AV_Descr[i], 0x00, sizeof(OCTETSTRING_VALUE_DESCR));
octetstring_init(&AV_Descr[i].Present_Value, NULL, 0);
}
}
/* we simply have 0-n object instances. Yours might be */
/* more complex, and then you need validate that the */
/* given instance exists */
bool OctetString_Value_Valid_Instance(uint32_t object_instance)
{
if (object_instance < MAX_OCTETSTRING_VALUES)
return true;
return false;
}
/* we simply have 0-n object instances. Yours might be */
/* more complex, and then count how many you have */
unsigned OctetString_Value_Count(void)
{
return MAX_OCTETSTRING_VALUES;
}
/* we simply have 0-n object instances. Yours might be */
/* more complex, and then you need to return the instance */
/* that correlates to the correct index */
uint32_t OctetString_Value_Index_To_Instance(unsigned index)
{
return index;
}
/* we simply have 0-n object instances. Yours might be */
/* more complex, and then you need to return the index */
/* that correlates to the correct instance number */
unsigned OctetString_Value_Instance_To_Index(uint32_t object_instance)
{
unsigned index = MAX_OCTETSTRING_VALUES;
if (object_instance < MAX_OCTETSTRING_VALUES)
index = object_instance;
return index;
}
/**
* For a given object instance-number, sets the present-value at a given
* priority 1..16.
*
* @param object_instance - object-instance number of the object
* @param value - octetstring value
* @param priority - priority 1..16
*
* @return true if values are within range and present-value is set.
*/
bool OctetString_Value_Present_Value_Set(uint32_t object_instance,
BACNET_OCTET_STRING * value,
uint8_t priority)
{
unsigned index = 0;
bool status = false;
index = OctetString_Value_Instance_To_Index(object_instance);
if (index < MAX_OCTETSTRING_VALUES) {
octetstring_copy(&AV_Descr[index].Present_Value, value);
status = true;
}
return status;
}
BACNET_OCTET_STRING *OctetString_Value_Present_Value(uint32_t object_instance)
{
BACNET_OCTET_STRING *value = NULL;
unsigned index = 0;
index = OctetString_Value_Instance_To_Index(object_instance);
if (index < MAX_OCTETSTRING_VALUES) {
value = &AV_Descr[index].Present_Value;
}
return value;
}
/* note: the object name must be unique within this device */
bool OctetString_Value_Object_Name(uint32_t object_instance,
BACNET_CHARACTER_STRING * object_name)
{
static char text_string[32] = ""; /* okay for single thread */
bool status = false;
if (object_instance < MAX_OCTETSTRING_VALUES) {
sprintf(text_string, "OCTETSTRING VALUE %lu",
(unsigned long) object_instance);
status = characterstring_init_ansi(object_name, text_string);
}
return status;
}
/* return apdu len, or BACNET_STATUS_ERROR on error */
int OctetString_Value_Read_Property(BACNET_READ_PROPERTY_DATA * rpdata)
{
int apdu_len = 0; /* return value */
BACNET_BIT_STRING bit_string;
BACNET_CHARACTER_STRING char_string;
BACNET_OCTET_STRING *real_value = NULL;
unsigned object_index = 0;
bool state = false;
uint8_t *apdu = NULL;
OCTETSTRING_VALUE_DESCR *CurrentAV;
if ((rpdata == NULL) || (rpdata->application_data == NULL) ||
(rpdata->application_data_len == 0)) {
return 0;
}
apdu = rpdata->application_data;
object_index =
OctetString_Value_Instance_To_Index(rpdata->object_instance);
if (object_index < MAX_OCTETSTRING_VALUES)
CurrentAV = &AV_Descr[object_index];
else
return BACNET_STATUS_ERROR;
switch (rpdata->object_property) {
case PROP_OBJECT_IDENTIFIER:
apdu_len =
encode_application_object_id(&apdu[0],
OBJECT_OCTETSTRING_VALUE, rpdata->object_instance);
break;
case PROP_OBJECT_NAME:
case PROP_DESCRIPTION:
OctetString_Value_Object_Name(rpdata->object_instance,
&char_string);
apdu_len =
encode_application_character_string(&apdu[0], &char_string);
break;
case PROP_OBJECT_TYPE:
apdu_len =
encode_application_enumerated(&apdu[0],
OBJECT_OCTETSTRING_VALUE);
break;
case PROP_PRESENT_VALUE:
real_value =
OctetString_Value_Present_Value(rpdata->object_instance);
apdu_len = encode_application_octet_string(&apdu[0], real_value);
break;
case PROP_STATUS_FLAGS:
bitstring_init(&bit_string);
bitstring_set_bit(&bit_string, STATUS_FLAG_IN_ALARM, false);
bitstring_set_bit(&bit_string, STATUS_FLAG_FAULT, false);
bitstring_set_bit(&bit_string, STATUS_FLAG_OVERRIDDEN, false);
bitstring_set_bit(&bit_string, STATUS_FLAG_OUT_OF_SERVICE,
CurrentAV->Out_Of_Service);
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_EVENT_STATE:
apdu_len =
encode_application_enumerated(&apdu[0], EVENT_STATE_NORMAL);
break;
case PROP_OUT_OF_SERVICE:
state = CurrentAV->Out_Of_Service;
apdu_len = encode_application_boolean(&apdu[0], state);
break;
default:
rpdata->error_class = ERROR_CLASS_PROPERTY;
rpdata->error_code = ERROR_CODE_UNKNOWN_PROPERTY;
apdu_len = BACNET_STATUS_ERROR;
break;
}
/* only array properties can have array options */
if ((apdu_len >= 0) && (rpdata->object_property != PROP_PRIORITY_ARRAY) &&
(rpdata->object_property != PROP_EVENT_TIME_STAMPS) &&
(rpdata->array_index != BACNET_ARRAY_ALL)) {
rpdata->error_class = ERROR_CLASS_PROPERTY;
rpdata->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;
apdu_len = BACNET_STATUS_ERROR;
}
return apdu_len;
}
/* returns true if successful */
bool OctetString_Value_Write_Property(BACNET_WRITE_PROPERTY_DATA * wp_data)
{
bool status = false; /* return value */
unsigned int object_index = 0;
int len = 0;
BACNET_APPLICATION_DATA_VALUE value;
OCTETSTRING_VALUE_DESCR *CurrentAV;
/* decode the some of the request */
len =
bacapp_decode_application_data(wp_data->application_data,
wp_data->application_data_len, &value);
/* FIXME: len < application_data_len: more data? */
if (len < 0) {
/* error while decoding - a value larger than we can handle */
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
return false;
}
if ((wp_data->object_property != PROP_PRIORITY_ARRAY) &&
(wp_data->object_property != PROP_EVENT_TIME_STAMPS) &&
(wp_data->array_index != BACNET_ARRAY_ALL)) {
/* only array properties can have array options */
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_PROPERTY_IS_NOT_AN_ARRAY;
return false;
}
object_index =
OctetString_Value_Instance_To_Index(wp_data->object_instance);
if (object_index < MAX_OCTETSTRING_VALUES)
CurrentAV = &AV_Descr[object_index];
else
return false;
switch (wp_data->object_property) {
case PROP_PRESENT_VALUE:
if (value.tag == BACNET_APPLICATION_TAG_OCTET_STRING) {
/* Command priority 6 is reserved for use by Minimum On/Off
algorithm and may not be used for other purposes in any
object. */
if (OctetString_Value_Present_Value_Set(wp_data->
object_instance, &value.type.Octet_String,
wp_data->priority)) {
status = true;
} else if (wp_data->priority == 6) {
/* Command priority 6 is reserved for use by Minimum On/Off
algorithm and may not be used for other purposes in any
object. */
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
} else {
status = false;
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
break;
case PROP_OUT_OF_SERVICE:
status =
WPValidateArgType(&value, BACNET_APPLICATION_TAG_BOOLEAN,
&wp_data->error_class, &wp_data->error_code);
if (status) {
CurrentAV->Out_Of_Service = value.type.Boolean;
}
break;
case PROP_OBJECT_IDENTIFIER:
case PROP_OBJECT_NAME:
case PROP_OBJECT_TYPE:
case PROP_STATUS_FLAGS:
case PROP_EVENT_STATE:
case PROP_DESCRIPTION:
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
break;
default:
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_UNKNOWN_PROPERTY;
break;
}
return status;
}
void OctetString_Value_Intrinsic_Reporting(uint32_t object_instance)
{
}
#ifdef TEST
#include <assert.h>
#include <string.h>
#include "ctest.h"
bool WPValidateArgType(BACNET_APPLICATION_DATA_VALUE * pValue,
uint8_t ucExpectedTag,
BACNET_ERROR_CLASS * pErrorClass,
BACNET_ERROR_CODE * pErrorCode)
{
pValue = pValue;
ucExpectedTag = ucExpectedTag;
pErrorClass = pErrorClass;
pErrorCode = pErrorCode;
return false;
}
void testOctetString_Value(Test * pTest)
{
BACNET_READ_PROPERTY_DATA rpdata;
uint8_t apdu[MAX_APDU] = { 0 };
int len = 0;
uint32_t len_value = 0;
uint8_t tag_number = 0;
uint16_t decoded_type = 0;
uint32_t decoded_instance = 0;
OctetString_Value_Init();
rpdata.application_data = &apdu[0];
rpdata.application_data_len = sizeof(apdu);
rpdata.object_type = OBJECT_OCTETSTRING_VALUE;
rpdata.object_instance = 1;
rpdata.object_property = PROP_OBJECT_IDENTIFIER;
rpdata.array_index = BACNET_ARRAY_ALL;
len = OctetString_Value_Read_Property(&rpdata);
ct_test(pTest, len != 0);
len = decode_tag_number_and_value(&apdu[0], &tag_number, &len_value);
ct_test(pTest, tag_number == BACNET_APPLICATION_TAG_OBJECT_ID);
len = decode_object_id(&apdu[len], &decoded_type, &decoded_instance);
ct_test(pTest, decoded_type == rpdata.object_type);
ct_test(pTest, decoded_instance == rpdata.object_instance);
return;
}
#ifdef TEST_OCTETSTRING_VALUE
int main(void)
{
Test *pTest;
bool rc;
pTest = ct_create("BACnet OctetString Value", NULL);
/* individual tests */
rc = ct_addTestFunction(pTest, testOctetString_Value);
assert(rc);
ct_setStream(pTest, stdout);
ct_run(pTest);
(void) ct_report(pTest);
ct_destroy(pTest);
return 0;
}
#endif /* TEST_OCTETSTRING_VALUE */
#endif /* TEST */
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