/** Local function which responds with either the requested object name
* or object ID, if the Device has a match.
* @param data [in] The decoded who-has payload from the request.
*/
static void match_name_or_object(
BACNET_WHO_HAS_DATA * data)
{
int object_type = 0;
uint32_t object_instance = 0;
bool found = false;
BACNET_CHARACTER_STRING object_name;
/* do we have such an object? If so, send an I-Have.
note: we should have only 1 of such an object */
if (data->is_object_name) {
/* valid name in my device? */
found =
Device_Valid_Object_Name(&data->object.name, &object_type,
&object_instance);
if (found) {
Send_I_Have(Device_Object_Instance_Number(),
(BACNET_OBJECT_TYPE) object_type, object_instance,
&data->object.name);
}
} else {
/* valid object_name copy in my device? */
found =
Device_Object_Name_Copy((BACNET_OBJECT_TYPE) data->
object.identifier.type, data->object.identifier.instance,
&object_name);
if (found) {
Send_I_Have(Device_Object_Instance_Number(),
(BACNET_OBJECT_TYPE) data->object.identifier.type,
data->object.identifier.instance, &object_name);
}
}
}
bool bacnet_name_write_unique(uint16_t offset,
int object_type,
uint32_t object_instance,
BACNET_CHARACTER_STRING * char_string,
BACNET_ERROR_CLASS * error_class,
BACNET_ERROR_CODE * error_code)
{
bool status = false;
size_t length = 0;
uint8_t encoding = 0;
int duplicate_type = 0;
uint32_t duplicate_instance = 0;
length = characterstring_length(char_string);
if (length < 1) {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
} else if (length <= NVM_NAME_SIZE) {
encoding = characterstring_encoding(char_string);
if (encoding < MAX_CHARACTER_STRING_ENCODING) {
if (Device_Valid_Object_Name(char_string, &duplicate_type,
&duplicate_instance)) {
if ((duplicate_type == object_type) &&
(duplicate_instance == object_instance)) {
/* writing same name to same object */
status = true;
} else {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_DUPLICATE_NAME;
}
} else {
status = bacnet_name_set(offset, char_string);
if (status) {
Device_Inc_Database_Revision();
} else {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
}
} else {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_CHARACTER_SET_NOT_SUPPORTED;
}
} else {
*error_class = ERROR_CLASS_PROPERTY;
*error_code = ERROR_CODE_NO_SPACE_TO_WRITE_PROPERTY;
}
return status;
}
void handler_who_has(
uint8_t * service_request,
uint16_t service_len,
BACNET_ADDRESS * src)
{
int len = 0;
BACNET_WHO_HAS_DATA data;
bool directed_to_me = false;
int object_type = 0;
uint32_t object_instance = 0;
char *object_name = NULL;
bool found = false;
(void) src;
len = whohas_decode_service_request(service_request, service_len, &data);
if (len > 0) {
if ((data.low_limit == -1) || (data.high_limit == -1))
directed_to_me = true;
else if ((Device_Object_Instance_Number() >= (uint32_t) data.low_limit)
&& (Device_Object_Instance_Number() <= (uint32_t) data.high_limit))
directed_to_me = true;
if (directed_to_me) {
/* do we have such an object? If so, send an I-Have.
note: we should have only 1 of such an object */
if (data.object_name) {
/* valid name in my device? */
object_name = characterstring_value(&data.object.name);
found =
Device_Valid_Object_Name(object_name, &object_type,
&object_instance);
if (found)
Send_I_Have(Device_Object_Instance_Number(), object_type,
object_instance, object_name);
} else {
/* valid object in my device? */
object_name =
Device_Valid_Object_Id(data.object.identifier.type,
data.object.identifier.instance);
if (object_name)
Send_I_Have(Device_Object_Instance_Number(),
data.object.identifier.type,
data.object.identifier.instance, object_name);
}
}
}
return;
}
/* returns true if successful */
bool Multistate_Input_Write_Property(
BACNET_WRITE_PROPERTY_DATA * wp_data)
{
bool status = false; /* return value */
int len = 0;
int element_len = 0;
BACNET_APPLICATION_DATA_VALUE value;
uint32_t max_states = 0;
uint32_t array_index = 0;
int object_type = 0;
uint32_t object_instance = 0;
/* decode the first chunk of the request */
len =
bacapp_decode_application_data(wp_data->application_data,
wp_data->application_data_len, &value);
/* len < application_data_len: extra data for arrays only */
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_STATE_TEXT) &&
(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_OBJECT_NAME:
if (value.tag == BACNET_APPLICATION_TAG_CHARACTER_STRING) {
/* All the object names in a device must be unique */
if (Device_Valid_Object_Name(&value.type.Character_String,
&object_type, &object_instance)) {
if ((object_type == wp_data->object_type) &&
(object_instance == wp_data->object_instance)) {
/* writing same name to same object */
status = true;
} else {
status = false;
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_DUPLICATE_NAME;
}
} else {
status =
Multistate_Input_Object_Name_Write(wp_data->
object_instance, &value.type.Character_String,
&wp_data->error_class, &wp_data->error_code);
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
case PROP_DESCRIPTION:
if (value.tag == BACNET_APPLICATION_TAG_CHARACTER_STRING) {
status =
Multistate_Input_Description_Write(wp_data->
object_instance, &value.type.Character_String,
&wp_data->error_class, &wp_data->error_code);
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
case PROP_PRESENT_VALUE:
status =
WPValidateArgType(&value, BACNET_APPLICATION_TAG_UNSIGNED_INT,
&wp_data->error_class, &wp_data->error_code);
if (status) {
status =
Multistate_Input_Present_Value_Set
(wp_data->object_instance, value.type.Unsigned_Int);
if (!status) {
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) {
Multistate_Input_Out_Of_Service_Set(wp_data->object_instance,
value.type.Boolean);
}
break;
case PROP_STATE_TEXT:
if (value.tag == BACNET_APPLICATION_TAG_CHARACTER_STRING) {
if (wp_data->array_index == 0) {
/* Array element zero is the number of
elements in the array. We have a fixed
size array, so we are read-only. */
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_WRITE_ACCESS_DENIED;
} else if (wp_data->array_index == BACNET_ARRAY_ALL) {
max_states =
Multistate_Input_Max_States(wp_data->object_instance);
array_index = 1;
element_len = len;
do {
if (element_len) {
status =
Multistate_Input_State_Text_Write(wp_data->
object_instance, array_index,
&value.type.Character_String,
&wp_data->error_class, &wp_data->error_code);
}
max_states--;
array_index++;
if (max_states) {
element_len =
bacapp_decode_application_data(&wp_data->
application_data[len],
wp_data->application_data_len - len, &value);
if (element_len < 0) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code =
ERROR_CODE_VALUE_OUT_OF_RANGE;
break;
}
len += element_len;
}
} while (max_states);
} else {
max_states =
Multistate_Input_Max_States(wp_data->object_instance);
if (wp_data->array_index <= max_states) {
status =
Multistate_Input_State_Text_Write(wp_data->
object_instance, wp_data->array_index,
&value.type.Character_String,
&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;
}
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
case PROP_OBJECT_IDENTIFIER:
case PROP_OBJECT_TYPE:
case PROP_STATUS_FLAGS:
case PROP_EVENT_STATE:
case PROP_NUMBER_OF_STATES:
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;
}
bool Device_Write_Property_Local(
BACNET_WRITE_PROPERTY_DATA * wp_data)
{
bool status = false; /* return value - false=error */
int len = 0;
uint8_t encoding = 0;
size_t length = 0;
BACNET_APPLICATION_DATA_VALUE value;
/* 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_OBJECT_LIST) &&
(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 ((int) wp_data->object_property) {
case PROP_OBJECT_IDENTIFIER:
if (value.tag == BACNET_APPLICATION_TAG_OBJECT_ID) {
if ((value.type.Object_Id.type == OBJECT_DEVICE) &&
(Device_Set_Object_Instance_Number(value.type.
Object_Id.instance))) {
/* we could send an I-Am broadcast to let the world know */
status = true;
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
case PROP_MAX_INFO_FRAMES:
if (value.tag == BACNET_APPLICATION_TAG_UNSIGNED_INT) {
if (value.type.Unsigned_Int <= 255) {
dlmstp_set_max_info_frames(value.type.Unsigned_Int);
status = true;
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
case PROP_MAX_MASTER:
if (value.tag == BACNET_APPLICATION_TAG_UNSIGNED_INT) {
if ((value.type.Unsigned_Int > 0) &&
(value.type.Unsigned_Int <= 127)) {
dlmstp_set_max_master(value.type.Unsigned_Int);
status = true;
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
case PROP_OBJECT_NAME:
if (value.tag == BACNET_APPLICATION_TAG_CHARACTER_STRING) {
length = characterstring_length(&value.type.Character_String);
if (length < 1) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
} else if (length < characterstring_capacity(&My_Object_Name)) {
encoding =
characterstring_encoding(&value.type.Character_String);
if (encoding < MAX_CHARACTER_STRING_ENCODING) {
/* All the object names in a device must be unique. */
if (Device_Valid_Object_Name(&value.type.
Character_String, NULL, NULL)) {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_DUPLICATE_NAME;
} else {
Device_Set_Object_Name(&value.type.
Character_String);
status = true;
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code =
ERROR_CODE_CHARACTER_SET_NOT_SUPPORTED;
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code =
ERROR_CODE_NO_SPACE_TO_WRITE_PROPERTY;
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
case 9600:
if (value.tag == BACNET_APPLICATION_TAG_UNSIGNED_INT) {
if (value.type.Unsigned_Int <= 115200) {
RS485_Set_Baud_Rate(value.type.Unsigned_Int);
status = true;
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_VALUE_OUT_OF_RANGE;
}
} else {
wp_data->error_class = ERROR_CLASS_PROPERTY;
wp_data->error_code = ERROR_CODE_INVALID_DATA_TYPE;
}
break;
case PROP_NUMBER_OF_APDU_RETRIES:
case PROP_APDU_TIMEOUT:
case PROP_VENDOR_IDENTIFIER:
case PROP_SYSTEM_STATUS:
case PROP_LOCATION:
case PROP_DESCRIPTION:
case PROP_MODEL_NAME:
case PROP_VENDOR_NAME:
case PROP_FIRMWARE_REVISION:
case PROP_APPLICATION_SOFTWARE_VERSION:
case PROP_LOCAL_TIME:
case PROP_UTC_OFFSET:
case PROP_LOCAL_DATE:
case PROP_DAYLIGHT_SAVINGS_STATUS:
case PROP_PROTOCOL_VERSION:
case PROP_PROTOCOL_REVISION:
case PROP_PROTOCOL_SERVICES_SUPPORTED:
case PROP_PROTOCOL_OBJECT_TYPES_SUPPORTED:
case PROP_OBJECT_LIST:
case PROP_MAX_APDU_LENGTH_ACCEPTED:
case PROP_SEGMENTATION_SUPPORTED:
case PROP_DEVICE_ADDRESS_BINDING:
case PROP_DATABASE_REVISION:
case PROP_ACTIVE_COV_SUBSCRIPTIONS:
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;
}
/* not using len at this time */
len = len;
return status;
}