/**
* \fn static int8_t sn_coap_builder_options_build(uint8_t **dst_packet_data_pptr, sn_coap_hdr_s *src_coap_msg_ptr)
*
* \brief Builds Options part of Packet data
*
* \param **dst_packet_data_pptr is destination for built Packet data
*
* \param *src_coap_msg_ptr is source for building Packet data
*
* \return Return value is 0 in every case
*/
static int8_t sn_coap_builder_options_build(uint8_t **dst_packet_data_pptr, sn_coap_hdr_s *src_coap_msg_ptr)
{
int16_t ret_status = 0;
/* * * * Check if Options are used at all * * * */
if (src_coap_msg_ptr->uri_path_ptr == NULL && src_coap_msg_ptr->token_ptr == NULL &&
src_coap_msg_ptr->content_type_ptr == NULL && src_coap_msg_ptr->options_list_ptr == NULL) {
return 0;
}
/* * * * First add Token option * * * */
if (src_coap_msg_ptr->token_len && src_coap_msg_ptr->token_ptr) {
memcpy(*dst_packet_data_pptr, src_coap_msg_ptr->token_ptr, src_coap_msg_ptr->token_len);
}
(*dst_packet_data_pptr) += src_coap_msg_ptr->token_len;
/* Then build rest of the options */
/* * * * Initialize previous Option number for new built message * * * */
uint16_t previous_option_number = 0;
//missing: COAP_OPTION_IF_MATCH, COAP_OPTION_IF_NONE_MATCH, COAP_OPTION_SIZE
/* Check if less used options are used at all */
if (src_coap_msg_ptr->options_list_ptr != NULL) {
/* * * * Build Uri-Host option * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->uri_host_len,
src_coap_msg_ptr->options_list_ptr->uri_host_ptr, COAP_OPTION_URI_HOST, &previous_option_number);
/* * * * Build ETag option * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->options_list_ptr->etag_ptr,
(uint16_t *)&src_coap_msg_ptr->options_list_ptr->etag_len, COAP_OPTION_ETAG, &previous_option_number);
/* * * * Build Observe option * * * * */
ret_status = sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->observe_len,
src_coap_msg_ptr->options_list_ptr->observe_ptr, COAP_OPTION_OBSERVE, &previous_option_number);
if (ret_status == 0) {
sn_coap_builder_options_build_add_zero_length_option(dst_packet_data_pptr,
src_coap_msg_ptr->options_list_ptr->observe_len,
src_coap_msg_ptr->options_list_ptr->observe,
COAP_OPTION_OBSERVE,
&previous_option_number);
}
/* * * * Build Uri-Port option * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->uri_port_len,
src_coap_msg_ptr->options_list_ptr->uri_port_ptr, COAP_OPTION_URI_PORT, &previous_option_number);
/* * * * Build Location-Path option * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->options_list_ptr->location_path_ptr,
&src_coap_msg_ptr->options_list_ptr->location_path_len, COAP_OPTION_LOCATION_PATH, &previous_option_number);
}
/* * * * Build Uri-Path option * * * */
/* Do not add uri-path for notification message.
* Uri-path is needed for cancelling observation with RESET message */
if (!src_coap_msg_ptr->options_list_ptr ||
(src_coap_msg_ptr->options_list_ptr && !src_coap_msg_ptr->options_list_ptr->observe_len && !src_coap_msg_ptr->options_list_ptr->observe_ptr))
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->uri_path_ptr,
&src_coap_msg_ptr->uri_path_len, COAP_OPTION_URI_PATH, &previous_option_number);
/* * * * Build Content-Type option * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->content_type_len,
src_coap_msg_ptr->content_type_ptr, COAP_OPTION_CONTENT_FORMAT, &previous_option_number);
if (src_coap_msg_ptr->options_list_ptr != NULL) {
/* * * * Build Max-Age option * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->max_age_len,
src_coap_msg_ptr->options_list_ptr->max_age_ptr, COAP_OPTION_MAX_AGE, &previous_option_number);
/* * * * Build Uri-Query option * * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->options_list_ptr->uri_query_ptr,
&src_coap_msg_ptr->options_list_ptr->uri_query_len, COAP_OPTION_URI_QUERY, &previous_option_number);
/* * * * Build Accept option * * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->options_list_ptr->accept_ptr,
(uint16_t *)&src_coap_msg_ptr->options_list_ptr->accept_len, COAP_OPTION_ACCEPT, &previous_option_number);
}
if (src_coap_msg_ptr->options_list_ptr != NULL) {
/* * * * Build Location-Query option * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->options_list_ptr->location_query_ptr,
&src_coap_msg_ptr->options_list_ptr->location_query_len, COAP_OPTION_LOCATION_QUERY, &previous_option_number);
/* * * * Build Block2 option * * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->block2_len,
src_coap_msg_ptr->options_list_ptr->block2_ptr, COAP_OPTION_BLOCK2, &previous_option_number);
/* * * * Build Block1 option * * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->block1_len,
src_coap_msg_ptr->options_list_ptr->block1_ptr, COAP_OPTION_BLOCK1, &previous_option_number);
/* * * * Build Size2 option * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->size2_len,
src_coap_msg_ptr->options_list_ptr->size2_ptr, COAP_OPTION_SIZE2, &previous_option_number);
/* * * * Build Proxy-Uri option * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->proxy_uri_len,
src_coap_msg_ptr->options_list_ptr->proxy_uri_ptr, COAP_OPTION_PROXY_URI, &previous_option_number);
/* * * * Build Size1 option * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->size1_len,
src_coap_msg_ptr->options_list_ptr->size1_ptr, COAP_OPTION_SIZE1, &previous_option_number);
}
/* Success */
return 0;
}
/**
* \fn static int8_t sn_coap_builder_options_build(uint8_t **dst_packet_data_pptr, sn_coap_hdr_s *src_coap_msg_ptr)
*
* \brief Builds Options part of Packet data
*
* \param **dst_packet_data_pptr is destination for built Packet data
*
* \param *src_coap_msg_ptr is source for building Packet data
*
* \return Return value is 0 in every case
*/
static int8_t sn_coap_builder_options_build(uint8_t **dst_packet_data_pptr, sn_coap_hdr_s *src_coap_msg_ptr)
{
/* * * * Check if Options are used at all * * * */
if (src_coap_msg_ptr->uri_path_ptr == NULL && src_coap_msg_ptr->token_ptr == NULL &&
src_coap_msg_ptr->content_format == COAP_CT_NONE && src_coap_msg_ptr->options_list_ptr == NULL) {
tr_error("sn_coap_builder_options_build - options not used!");
return 0;
}
/* * * * First add Token option * * * */
if (src_coap_msg_ptr->token_len && src_coap_msg_ptr->token_ptr) {
memcpy(*dst_packet_data_pptr, src_coap_msg_ptr->token_ptr, src_coap_msg_ptr->token_len);
}
(*dst_packet_data_pptr) += src_coap_msg_ptr->token_len;
/* Then build rest of the options */
/* * * * Initialize previous Option number for new built message * * * */
uint16_t previous_option_number = 0;
//missing: COAP_OPTION_IF_MATCH, COAP_OPTION_IF_NONE_MATCH, COAP_OPTION_SIZE
/* Check if less used options are used at all */
if (src_coap_msg_ptr->options_list_ptr != NULL) {
/* * * * Build Uri-Host option * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->uri_host_len,
src_coap_msg_ptr->options_list_ptr->uri_host_ptr, COAP_OPTION_URI_HOST, &previous_option_number);
/* * * * Build ETag option * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->options_list_ptr->etag_ptr,
(uint16_t *)&src_coap_msg_ptr->options_list_ptr->etag_len, COAP_OPTION_ETAG, &previous_option_number);
/* * * * Build Observe option * * * * */
if (src_coap_msg_ptr->options_list_ptr->observe != COAP_OBSERVE_NONE) {
sn_coap_builder_options_build_add_uint_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->observe,
COAP_OPTION_OBSERVE, &previous_option_number);
}
/* * * * Build Uri-Port option * * * */
if (src_coap_msg_ptr->options_list_ptr->uri_port != COAP_OPTION_URI_PORT_NONE) {
sn_coap_builder_options_build_add_uint_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->uri_port,
COAP_OPTION_URI_PORT, &previous_option_number);
}
/* * * * Build Location-Path option * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->options_list_ptr->location_path_ptr,
&src_coap_msg_ptr->options_list_ptr->location_path_len, COAP_OPTION_LOCATION_PATH, &previous_option_number);
}
/* * * * Build Uri-Path option * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->uri_path_ptr,
&src_coap_msg_ptr->uri_path_len, COAP_OPTION_URI_PATH, &previous_option_number);
/* * * * Build Content-Type option * * * */
if (src_coap_msg_ptr->content_format != COAP_CT_NONE) {
sn_coap_builder_options_build_add_uint_option(dst_packet_data_pptr, src_coap_msg_ptr->content_format,
COAP_OPTION_CONTENT_FORMAT, &previous_option_number);
}
if (src_coap_msg_ptr->options_list_ptr != NULL) {
/* * * * Build Max-Age option * * * */
if (src_coap_msg_ptr->options_list_ptr->max_age != COAP_OPTION_MAX_AGE_DEFAULT) {
sn_coap_builder_options_build_add_uint_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->max_age,
COAP_OPTION_MAX_AGE, &previous_option_number);
}
/* * * * Build Uri-Query option * * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->options_list_ptr->uri_query_ptr,
&src_coap_msg_ptr->options_list_ptr->uri_query_len, COAP_OPTION_URI_QUERY, &previous_option_number);
/* * * * Build Accept option * * * * */
if (src_coap_msg_ptr->options_list_ptr->accept != COAP_CT_NONE) {
sn_coap_builder_options_build_add_uint_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->accept,
COAP_OPTION_ACCEPT, &previous_option_number);
}
}
if (src_coap_msg_ptr->options_list_ptr != NULL) {
/* * * * Build Location-Query option * * * */
sn_coap_builder_options_build_add_multiple_option(dst_packet_data_pptr, &src_coap_msg_ptr->options_list_ptr->location_query_ptr,
&src_coap_msg_ptr->options_list_ptr->location_query_len, COAP_OPTION_LOCATION_QUERY, &previous_option_number);
/* * * * Build Block2 option * * * * */
if (src_coap_msg_ptr->options_list_ptr->block2 != COAP_OPTION_BLOCK_NONE) {
sn_coap_builder_options_build_add_uint_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->block2,
COAP_OPTION_BLOCK2, &previous_option_number);
}
/* * * * Build Block1 option * * * * */
if (src_coap_msg_ptr->options_list_ptr->block1 != COAP_OPTION_BLOCK_NONE) {
sn_coap_builder_options_build_add_uint_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->block1,
COAP_OPTION_BLOCK1, &previous_option_number);
}
/* * * * Build Size2 option * * * */
if (src_coap_msg_ptr->options_list_ptr->use_size2) {
sn_coap_builder_options_build_add_uint_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->size2,
COAP_OPTION_SIZE2, &previous_option_number);
}
/* * * * Build Proxy-Uri option * * * */
sn_coap_builder_options_build_add_one_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->proxy_uri_len,
src_coap_msg_ptr->options_list_ptr->proxy_uri_ptr, COAP_OPTION_PROXY_URI, &previous_option_number);
/* * * * Build Size1 option * * * */
if (src_coap_msg_ptr->options_list_ptr->use_size1) {
sn_coap_builder_options_build_add_uint_option(dst_packet_data_pptr, src_coap_msg_ptr->options_list_ptr->size1,
COAP_OPTION_SIZE1, &previous_option_number);
}
}
/* Success */
return 0;
}
