Files
bacnet_stack/src/bacnet/basic/object/time_value.c
T

844 lines
25 KiB
C

/**
* @file
* @author Steve Karg <skarg@users.sourceforge.net>
* @author Mikhail Antropov <michail.antropov@dsr-corporation.com>
* @date June 2023
* @brief Time Value object is an object with a present-value that
* uses an bacnet time data type.
* @copyright SPDX-License-Identifier: MIT
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
/* BACnet Stack defines - first */
#include "bacnet/bacdef.h"
/* BACnet Stack API */
#include "bacnet/bacdcode.h"
#include "bacnet/bacerror.h"
#include "bacnet/bacapp.h"
#include "bacnet/bactext.h"
#include "bacnet/cov.h"
#include "bacnet/apdu.h"
#include "bacnet/npdu.h"
#include "bacnet/abort.h"
#include "bacnet/datetime.h"
#include "bacnet/proplist.h"
#include "bacnet/reject.h"
#include "bacnet/rp.h"
#include "bacnet/wp.h"
#include "bacnet/basic/services.h"
#include "bacnet/basic/sys/keylist.h"
/* me! */
#include "time_value.h"
struct object_data {
bool Change_Of_Value : 1;
bool Write_Enabled : 1;
bool Out_Of_Service : 1;
BACNET_TIME Present_Value;
const char *Object_Name;
const char *Description;
};
/* Key List for storing the object data sorted by instance number */
static OS_Keylist Object_List;
/* callback for present value writes */
static time_value_write_present_value_callback
Time_Value_Write_Present_Value_Callback;
/* These three arrays are used by the ReadPropertyMultiple handler */
static const int Time_Value_Properties_Required[] = {
PROP_OBJECT_IDENTIFIER, PROP_OBJECT_NAME, PROP_OBJECT_TYPE,
PROP_PRESENT_VALUE, PROP_STATUS_FLAGS, -1
};
static const int Time_Value_Properties_Optional[] = { PROP_DESCRIPTION,
PROP_EVENT_STATE,
PROP_OUT_OF_SERVICE, -1 };
static const int Time_Value_Properties_Proprietary[] = { -1 };
/* standard properties that are arrays for this object,
but not necessary supported in this object */
static const int BACnetARRAY_Properties[] = { PROP_PRIORITY_ARRAY,
PROP_EVENT_TIME_STAMPS,
PROP_EVENT_MESSAGE_TEXTS,
PROP_EVENT_MESSAGE_TEXTS_CONFIG,
PROP_VALUE_SOURCE_ARRAY,
PROP_COMMAND_TIME_ARRAY,
PROP_TAGS,
-1 };
/**
* Returns the list of required, optional, and proprietary properties.
* Used by ReadPropertyMultiple service.
*
* @param pRequired - pointer to list of int terminated by -1, of
* BACnet required properties for this object.
* @param pOptional - pointer to list of int terminated by -1, of
* BACnet optkional properties for this object.
* @param pProprietary - pointer to list of int terminated by -1, of
* BACnet proprietary properties for this object.
*/
void Time_Value_Property_Lists(
const int **pRequired, const int **pOptional, const int **pProprietary)
{
if (pRequired) {
*pRequired = Time_Value_Properties_Required;
}
if (pOptional) {
*pOptional = Time_Value_Properties_Optional;
}
if (pProprietary) {
*pProprietary = Time_Value_Properties_Proprietary;
}
return;
}
/**
* Determines if a given Time Value instance is valid
*
* @param object_instance - object-instance number of the object
*
* @return true if the instance is valid, and false if not
*/
bool Time_Value_Valid_Instance(uint32_t object_instance)
{
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
return true;
}
return false;
}
/**
* Determines the number of Time Value objects
*
* @return Number of Time Value objects
*/
unsigned Time_Value_Count(void)
{
return Keylist_Count(Object_List);
}
/**
* Determines the object instance-number for a given 0..N index
* of Time Value objects where N is Time_Value_Count().
*
* @param index - 0..N where N is Time_Value_Count()
*
* @return object instance-number for the given index
*/
uint32_t Time_Value_Index_To_Instance(unsigned index)
{
KEY key = UINT32_MAX;
Keylist_Index_Key(Object_List, index, &key);
return key;
}
/**
* For a given object instance-number, determines a 0..N index
* of Time Value objects where N is Time_Value_Count().
*
* @param object_instance - object-instance number of the object
*
* @return index for the given instance-number, or Time_Value_Count()
* if not valid.
*/
unsigned Time_Value_Instance_To_Index(uint32_t object_instance)
{
return Keylist_Index(Object_List, object_instance);
}
/**
* For a given object instance-number, determines the present-value
*
* @param object_instance - object-instance number of the object
*
* @return present-value of the object
*/
bool Time_Value_Present_Value(uint32_t object_instance, BACNET_TIME *value)
{
bool status = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
datetime_copy_time(value, &pObject->Present_Value);
status = true;
}
return status;
}
/**
* @brief For a given object instance-number, checks the present-value for COV
* @param pObject - specific object with valid data
* @param value - floating point analog value
*/
static void Time_Value_Present_Value_COV_Detect(
struct object_data *pObject, const BACNET_TIME *value)
{
if (pObject && value) {
if (datetime_compare_time(&pObject->Present_Value, value) != 0) {
pObject->Change_Of_Value = true;
}
}
}
/**
* For a given object instance-number, sets the present-value
*
* @param object_instance - object-instance number of the object
* @param value - indicator of 'present value'
*
* @return true if values are within range and present-value is set.
*/
bool Time_Value_Present_Value_Set(
uint32_t object_instance, const BACNET_TIME *value)
{
bool status = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
if (!pObject->Out_Of_Service) {
if (value) {
Time_Value_Present_Value_COV_Detect(pObject, value);
datetime_copy_time(&pObject->Present_Value, value);
status = true;
}
}
}
return status;
}
/**
* For a given object instance-number, sets the present-value
*
* @param object_instance - object-instance number of the object
* @param value - Bacnet time data object
* @param priority - priority-array index value 1..16
* @param error_class - the BACnet error class
* @param error_code - BACnet Error code
*
* @return true if values are within range and present-value is set.
*/
static bool Time_Value_Present_Value_Write(
uint32_t object_instance,
BACNET_TIME *value,
uint8_t priority,
BACNET_ERROR_CLASS *error_class,
BACNET_ERROR_CODE *error_code)
{
bool status = false;
struct object_data *pObject;
BACNET_TIME old_value = { 0 };
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
(void)priority;
if (pObject->Write_Enabled) {
datetime_copy_time(&old_value, &pObject->Present_Value);
Time_Value_Present_Value_COV_Detect(pObject, value);
datetime_copy_time(&pObject->Present_Value, value);
if (Time_Value_Write_Present_Value_Callback) {
Time_Value_Write_Present_Value_Callback(
object_instance, &old_value, value);
}
status = true;
} else {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
}
} else {
*error_class = ERROR_CLASS_OBJECT;
*error_code = ERROR_CODE_UNKNOWN_OBJECT;
}
return status;
}
/**
* For a given object instance-number, returns the Out-of-service value
*
* @param object_instance - object-instance number of the object
*
* @return Out-of-service value of the object
*/
bool Time_Value_Out_Of_Service(uint32_t object_instance)
{
bool status = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
status = pObject->Out_Of_Service;
}
return status;
}
/**
* For a given object instance-number, sets the Out-of-service value
*
* @param object_instance - object-instance number of the object
* @param value - indicator of 'Out-of-service'
*
* @return true if Out-of-service value is set.
*/
bool Time_Value_Out_Of_Service_Set(uint32_t object_instance, bool value)
{
bool status = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
pObject->Out_Of_Service = value;
status = true;
}
return status;
}
/**
* For a given object instance-number, loads the object-name into
* a characterstring. Note that the object name must be unique
* within this device.
*
* @param object_instance - object-instance number of the object
* @param object_name - holds the object-name retrieved
*
* @return true if object-name was retrieved
*/
bool Time_Value_Object_Name(
uint32_t object_instance, BACNET_CHARACTER_STRING *object_name)
{
bool status = false;
struct object_data *pObject;
char name_text[16] = "Time-4194303";
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
if (pObject->Object_Name) {
status =
characterstring_init_ansi(object_name, pObject->Object_Name);
} else {
snprintf(name_text, sizeof(name_text), "Time-%u", object_instance);
status = characterstring_init_ansi(object_name, name_text);
}
}
return status;
}
/**
* For a given object instance-number, sets the object-name
* Note that the object name must be unique within this device.
*
* @param object_instance - object-instance number of the object
* @param new_name - holds the object-name to be set
*
* @return true if object-name was set
*/
bool Time_Value_Name_Set(uint32_t object_instance, const char *new_name)
{
bool status = false; /* return value */
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
status = true;
pObject->Object_Name = new_name;
}
return status;
}
/**
* @brief Return the object name C string
* @param object_instance [in] BACnet object instance number
* @return object name or NULL if not found
*/
const char *Time_Value_Name_ASCII(uint32_t object_instance)
{
const char *name = NULL;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
name = pObject->Object_Name;
}
return name;
}
/**
* For a given object instance-number, returns the description
*
* @param object_instance - object-instance number of the object
*
* @return description text or NULL if not found
*/
const char *Time_Value_Description(uint32_t object_instance)
{
const char *name = NULL;
const struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
if (pObject->Description) {
name = pObject->Description;
} else {
name = "";
}
}
return name;
}
/**
* For a given object instance-number, sets the description
*
* @param object_instance - object-instance number of the object
* @param new_name - holds the description to be set
*
* @return true if object-name was set
*/
bool Time_Value_Description_Set(uint32_t object_instance, const char *new_name)
{
bool status = false; /* return value */
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
status = true;
pObject->Description = new_name;
}
return status;
}
/**
* @brief Determine if the object property is a BACnetARRAY property
* @param object_property - object-property to be checked
* @return true if the property is a BACnetARRAY property
*/
static bool BACnetARRAY_Property(int object_property)
{
return property_list_member(BACnetARRAY_Properties, object_property);
}
bool Time_Value_Change_Of_Value(uint32_t object_instance)
{
bool status = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
status = pObject->Change_Of_Value;
}
return status;
}
void Time_Value_Change_Of_Value_Clear(uint32_t object_instance)
{
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
pObject->Change_Of_Value = false;
}
return;
}
/**
* For a given object instance-number, loads the value_list with the COV data.
*
* @param object_instance - object-instance number of the object
* @param value_list - list of COV data
*
* @return true if the value list is encoded
*/
bool Time_Value_Encode_Value_List(
uint32_t object_instance, BACNET_PROPERTY_VALUE *value_list)
{
bool status = false;
BACNET_TIME btime = { 0 };
if (value_list) {
value_list->propertyIdentifier = PROP_PRESENT_VALUE;
value_list->propertyArrayIndex = BACNET_ARRAY_ALL;
value_list->value.context_specific = false;
value_list->value.tag = BACNET_APPLICATION_TAG_ENUMERATED;
value_list->value.next = NULL;
Time_Value_Present_Value(object_instance, &btime);
datetime_copy_time(&value_list->value.type.Time, &btime);
value_list->priority = BACNET_NO_PRIORITY;
value_list = value_list->next;
}
if (value_list) {
value_list->propertyIdentifier = PROP_STATUS_FLAGS;
value_list->propertyArrayIndex = BACNET_ARRAY_ALL;
value_list->value.context_specific = false;
value_list->value.tag = BACNET_APPLICATION_TAG_BIT_STRING;
value_list->value.next = NULL;
bitstring_init(&value_list->value.type.Bit_String);
bitstring_set_bit(
&value_list->value.type.Bit_String, STATUS_FLAG_IN_ALARM, false);
bitstring_set_bit(
&value_list->value.type.Bit_String, STATUS_FLAG_FAULT, false);
bitstring_set_bit(
&value_list->value.type.Bit_String, STATUS_FLAG_OVERRIDDEN, false);
if (Time_Value_Out_Of_Service(object_instance)) {
bitstring_set_bit(
&value_list->value.type.Bit_String, STATUS_FLAG_OUT_OF_SERVICE,
true);
} else {
bitstring_set_bit(
&value_list->value.type.Bit_String, STATUS_FLAG_OUT_OF_SERVICE,
false);
}
value_list->priority = BACNET_NO_PRIORITY;
value_list->next = NULL;
status = true;
}
return status;
}
/**
* ReadProperty handler for this object. For the given ReadProperty
* data, the application_data is loaded or the error flags are set.
*
* @param rpdata - BACNET_READ_PROPERTY_DATA data, including
* requested data and space for the reply, or error response.
*
* @return number of APDU bytes in the response, or
* BACNET_STATUS_ERROR on error.
*/
int Time_Value_Read_Property(BACNET_READ_PROPERTY_DATA *rpdata)
{
int apdu_len = 0; /* return value */
BACNET_BIT_STRING bit_string;
BACNET_CHARACTER_STRING char_string;
uint8_t *apdu = NULL;
BACNET_TIME value;
if ((rpdata == NULL) || (rpdata->application_data == NULL) ||
(rpdata->application_data_len == 0)) {
return 0;
}
apdu = rpdata->application_data;
switch (rpdata->object_property) {
case PROP_OBJECT_IDENTIFIER:
apdu_len = encode_application_object_id(
&apdu[0], rpdata->object_type, rpdata->object_instance);
break;
case PROP_OBJECT_NAME:
Time_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], rpdata->object_type);
break;
case PROP_PRESENT_VALUE:
if (Time_Value_Present_Value(rpdata->object_instance, &value)) {
apdu_len = encode_application_time(apdu, &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,
Time_Value_Out_Of_Service(rpdata->object_instance));
apdu_len = encode_application_bitstring(&apdu[0], &bit_string);
break;
case PROP_OUT_OF_SERVICE:
apdu_len = encode_application_boolean(
&apdu[0], Time_Value_Out_Of_Service(rpdata->object_instance));
break;
case PROP_DESCRIPTION:
characterstring_init_ansi(
&char_string, Time_Value_Description(rpdata->object_instance));
apdu_len = encode_application_character_string(apdu, &char_string);
break;
case PROP_EVENT_STATE:
apdu_len =
encode_application_enumerated(&apdu[0], EVENT_STATE_NORMAL);
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) && (!BACnetARRAY_Property(rpdata->object_property)) &&
(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;
}
/**
* WriteProperty handler for this object. For the given WriteProperty
* data, the application_data is loaded or the error flags are set.
*
* @param wp_data - BACNET_WRITE_PROPERTY_DATA data, including
* requested data and space for the reply, or error response.
*
* @return false if an error is loaded, true if no errors
*/
bool Time_Value_Write_Property(BACNET_WRITE_PROPERTY_DATA *wp_data)
{
bool status = false; /* return value */
BACNET_APPLICATION_DATA_VALUE value = { 0 };
int len = 0;
/* 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 ((!BACnetARRAY_Property(wp_data->object_property)) &&
(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;
}
switch (wp_data->object_property) {
case PROP_PRESENT_VALUE:
if (Time_Value_Out_Of_Service(wp_data->object_instance)) {
status = write_property_type_valid(
wp_data, &value, BACNET_APPLICATION_TAG_TIME);
if (status) {
status = Time_Value_Present_Value_Write(
wp_data->object_instance, &value.type.Time,
wp_data->priority, &wp_data->error_class,
&wp_data->error_code);
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
}
break;
case PROP_OUT_OF_SERVICE:
status = write_property_type_valid(
wp_data, &value, BACNET_APPLICATION_TAG_BOOLEAN);
if (status) {
Time_Value_Out_Of_Service_Set(
wp_data->object_instance, value.type.Boolean);
}
break;
default:
if (property_lists_member(
Time_Value_Properties_Required,
Time_Value_Properties_Optional,
Time_Value_Properties_Proprietary,
wp_data->object_property)) {
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_UNKNOWN_PROPERTY;
}
break;
}
return status;
}
/**
* @brief Sets a callback used when present-value is written from BACnet
* @param cb - callback used to provide indications
*/
void Time_Value_Write_Present_Value_Callback_Set(
time_value_write_present_value_callback cb)
{
Time_Value_Write_Present_Value_Callback = cb;
}
/**
* @brief Determines the status flags for a given object instance-number
* @param object_instance - object-instance number of the object
* @return status flags bitstring octet
*/
uint8_t Time_Value_Status_Flags(uint32_t object_instance)
{
BACNET_BIT_STRING bit_string;
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,
Time_Value_Out_Of_Service(object_instance));
return bitstring_octet(&bit_string, 0);
}
/**
* @brief Determines a object write-enabled flag state
* @param object_instance - object-instance number of the object
* @return write-enabled status flag
*/
bool Time_Value_Write_Enabled(uint32_t object_instance)
{
bool value = false;
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
value = pObject->Write_Enabled;
}
return value;
}
/**
* @brief For a given object instance-number, sets the write-enabled flag
* @param object_instance - object-instance number of the object
*/
void Time_Value_Write_Enable(uint32_t object_instance)
{
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
pObject->Write_Enabled = true;
}
}
/**
* @brief For a given object instance-number, clears the write-enabled flag
* @param object_instance - object-instance number of the object
*/
void Time_Value_Write_Disable(uint32_t object_instance)
{
struct object_data *pObject;
pObject = Keylist_Data(Object_List, object_instance);
if (pObject) {
pObject->Write_Enabled = false;
}
}
/**
* Creates a Time Value object
* @param object_instance - object-instance number of the object
* @return object_instance if the object is created, else BACNET_MAX_INSTANCE
*/
uint32_t Time_Value_Create(uint32_t object_instance)
{
struct object_data *pObject = NULL;
int index = 0;
if (object_instance > BACNET_MAX_INSTANCE) {
return BACNET_MAX_INSTANCE;
} else if (object_instance == BACNET_MAX_INSTANCE) {
/* wildcard instance */
/* the Object_Identifier property of the newly created object
shall be initialized to a value that is unique within the
responding BACnet-user device. The method used to generate
the object identifier is a local matter.*/
object_instance = Keylist_Next_Empty_Key(Object_List, 1);
}
pObject = Keylist_Data(Object_List, object_instance);
if (!pObject) {
pObject = calloc(1, sizeof(struct object_data));
if (!pObject) {
return BACNET_MAX_INSTANCE;
}
pObject->Object_Name = NULL;
pObject->Description = NULL;
datetime_set_time(&pObject->Present_Value, 0, 0, 0, 0);
pObject->Change_Of_Value = false;
pObject->Write_Enabled = false;
/* add to list */
index = Keylist_Data_Add(Object_List, object_instance, pObject);
if (index < 0) {
free(pObject);
return BACNET_MAX_INSTANCE;
}
}
return object_instance;
}
/**
* Deletes an Time Value object
* @param object_instance - object-instance number of the object
* @return true if the object is deleted
*/
bool Time_Value_Delete(uint32_t object_instance)
{
bool status = false;
struct object_data *pObject = NULL;
pObject = Keylist_Data_Delete(Object_List, object_instance);
if (pObject) {
free(pObject);
status = true;
}
return status;
}
/**
* Deletes all the Time Values and their data
*/
void Time_Value_Cleanup(void)
{
struct object_data *pObject;
if (Object_List) {
do {
pObject = Keylist_Data_Pop(Object_List);
if (pObject) {
free(pObject);
}
} while (pObject);
Keylist_Delete(Object_List);
Object_List = NULL;
}
}
/**
* Initializes the Time Value object data
*/
void Time_Value_Init(void)
{
if (!Object_List) {
Object_List = Keylist_Create();
}
}