SDP Utils API

src/classic/sdp_util.h

// OFFSETS FOR LOCALIZED ATTRIBUTES - BLUETOOTH_ATTRIBUTE_LANGUAGE_BASE_ATTRIBUTE_ID_LIST
#define SDP_Offset_ServiceName        0x0000
#define SDP_Offset_ServiceDescription 0x0001
#define SDP_Offset_ProviderName       0x0002

typedef enum {
    DE_NIL = 0,
    DE_UINT,
    DE_INT,
    DE_UUID,
    DE_STRING,
    DE_BOOL,
    DE_DES,
    DE_DEA,
    DE_URL
} de_type_t;

typedef enum {
    DE_SIZE_8 = 0,
    DE_SIZE_16,
    DE_SIZE_32,
    DE_SIZE_64,
    DE_SIZE_128,
    DE_SIZE_VAR_8,
    DE_SIZE_VAR_16,
    DE_SIZE_VAR_32
} de_size_t;

// MARK: DateElement
void      de_dump_data_element(const uint8_t * record);
uint32_t  de_get_len(const uint8_t * header);


// @note returned "string" is not NULL terminated
const uint8_t * de_get_string(const uint8_t * element);

de_size_t de_get_size_type(const uint8_t * header);
de_type_t de_get_element_type(const uint8_t * header);
uint32_t  de_get_header_size(const uint8_t * header);
// returns true if uint16 was read
bool      de_element_get_uint16(const uint8_t * element, uint16_t * value);
uint32_t  de_get_data_size(const uint8_t * header);
uint32_t  de_get_uuid32(const uint8_t * element);
// returns true if uint16 was read
bool      de_get_normalized_uuid(uint8_t *uuid128, const uint8_t *element);

void      de_create_sequence(uint8_t * header);
void      de_store_descriptor_with_len(uint8_t * header, de_type_t type, de_size_t size, uint32_t len);
uint8_t * de_push_sequence(uint8_t *sequence);
void      de_pop_sequence(uint8_t * parent, uint8_t * child);
void      de_add_number(uint8_t *sequence, de_type_t type, de_size_t size, uint32_t value);
void      de_add_data(uint8_t *sequence, de_type_t type, uint16_t size, uint8_t *data);
void      de_add_uuid128(uint8_t * sequence, uint8_t * uuid);

// returns data element  len if date element is smaller than size
uint32_t de_get_len_safe(const uint8_t * header, uint32_t size);

// MARK: DES iterator
typedef struct {
    uint8_t * element;
    uint16_t pos;
    uint16_t length;
} des_iterator_t;

bool      des_iterator_init(des_iterator_t * it, uint8_t * element);
bool      des_iterator_has_more(des_iterator_t * it);
de_type_t des_iterator_get_type (des_iterator_t * it);
uint16_t  des_iterator_get_size (des_iterator_t * it);
uint8_t * des_iterator_get_element(des_iterator_t * it);
void      des_iterator_next(des_iterator_t * it);

// MARK: SDP
uint16_t  sdp_append_attributes_in_attributeIDList(uint8_t *record, uint8_t *attributeIDList, uint16_t startOffset, uint16_t maxBytes, uint8_t *buffer);
uint8_t * sdp_get_attribute_value_for_attribute_id(uint8_t * record, uint16_t attributeID);
bool      sdp_set_attribute_value_for_attribute_id(uint8_t * record, uint16_t attributeID, uint32_t value);
bool      sdp_record_matches_service_search_pattern(uint8_t *record, uint8_t *serviceSearchPattern);
uint16_t  sdp_get_filtered_size(uint8_t *record, uint8_t *attributeIDList);
bool      sdp_filter_attributes_in_attributeIDList(uint8_t *record, uint8_t *attributeIDList, uint16_t startOffset, uint16_t maxBytes, uint16_t *usedBytes, uint8_t *buffer);
bool      sdp_attribute_list_contains_id(uint8_t *attributeIDList, uint16_t attributeID);
bool      sdp_attribute_list_valid(uint8_t *attributeIDList);
bool      sdp_valid_service_search_pattern(uint8_t *service_search_pattern);
/*
 * @brief Returns service search pattern for given UUID-16
 * @note Uses fixed buffer
 */
uint8_t* sdp_service_search_pattern_for_uuid16(uint16_t uuid16);

/*
 * @brief Returns service search pattern for given UUID-128
 * @note Uses fixed buffer
 */
uint8_t* sdp_service_search_pattern_for_uuid128(const uint8_t * uuid128);