sdp_lib.h

bluetooth 开发库bluez-libs-2.23

/*
 *  a service attribute request. 
 * 
 *  INPUT :
 * 
 *    uint32_t handle
 *      The handle of the service for which the attribute(s) are
 *      requested
 * 
 *    sdp_attrreq_type_t reqtype
 *      Attribute identifiers are 16 bit unsigned integers specified
 *      in one of 2 ways described below :
 *      SDP_ATTR_REQ_INDIVIDUAL - 16bit individual identifiers
 *         They are the actual attribute identifiers in ascending order
 * 
 *      SDP_ATTR_REQ_RANGE - 32bit identifier range
 *         The high-order 16bits is the start of range
 *         the low-order 16bits are the end of range
 *         0x0000 to 0xFFFF gets all attributes
 * 
 *    sdp_list_t *attrid_list
 *      Singly linked list containing attribute identifiers desired.
 *      Every element is either a uint16_t(attrSpec = SDP_ATTR_REQ_INDIVIDUAL)  
 *      or a uint32_t(attrSpec=SDP_ATTR_REQ_RANGE)
 * 
 *  OUTPUT :
 *    int return value
 *      0 
 *        The request completed successfully. This does not
 *        mean the requested services were found
 *      -1
 *        The request completed unsuccessfully due to a timeout
 */

typedef enum {
	/*
	 *  Attributes are specified as individual elements
	 */
	SDP_ATTR_REQ_INDIVIDUAL = 1,
	/*
	 *  Attributes are specified as a range
	 */
	SDP_ATTR_REQ_RANGE
} sdp_attrreq_type_t;

sdp_record_t *sdp_service_attr_req(sdp_session_t *session, uint32_t handle, sdp_attrreq_type_t reqtype, const sdp_list_t *attrid_list);

/*
 *  This is a service search request combined with the service
 *  attribute request. First a service class match is done and
 *  for matching service, requested attributes are extracted
 * 
 *  INPUT :
 * 
 *    sdp_list_t *search_list
 *      Singly linked list containing elements of the search
 *      pattern. Each entry in the list is a UUID(DataTypeSDP_UUID16)
 *      of the service to be searched
 * 
 *    AttributeSpecification attrSpec
 *      Attribute identifiers are 16 bit unsigned integers specified
 *      in one of 2 ways described below :
 *      SDP_ATTR_REQ_INDIVIDUAL - 16bit individual identifiers
 *         They are the actual attribute identifiers in ascending order
 * 
 *      SDP_ATTR_REQ_RANGE - 32bit identifier range
 *         The high-order 16bits is the start of range
 *         the low-order 16bits are the end of range
 *         0x0000 to 0xFFFF gets all attributes
 * 
 *    sdp_list_t *attrid_list
 *      Singly linked list containing attribute identifiers desired.
 *      Every element is either a uint16_t(attrSpec = SDP_ATTR_REQ_INDIVIDUAL)  
 *      or a uint32_t(attrSpec=SDP_ATTR_REQ_RANGE)
 * 
 *  OUTPUT :
 *    int return value
 *      0 
 *        The request completed successfully. This does not
 *        mean the requested services were found
 *      -1
 *        The request completed unsuccessfully due to a timeout
 * 
 *    sdp_list_t *rsp_list
 *      This variable is set on a successful return to point to
 *      service(s) found. Each element of this list is of type
 *      sdp_record_t *.
 */
int sdp_service_search_attr_req(sdp_session_t *session, const sdp_list_t *search_list, sdp_attrreq_type_t reqtype, const sdp_list_t *attrid_list, sdp_list_t **rsp_list);

/*
 * Allocate/free a service record and its attributes
 */
sdp_record_t *sdp_record_alloc(void);
void sdp_record_free(sdp_record_t *rec);

/*
 * Register a service record. 
 * 
 * Note: It is the responsbility of the Service Provider to create the 
 * record first and set its attributes using setXXX() methods.
 * 
 * The service provider must then call sdp_record_register() to make 
 * the service record visible to SDP clients.  This function returns 0
 * on success or -1 on failure (and sets errno).
 */
int sdp_record_register(sdp_session_t *sess, sdp_record_t *rec, uint8_t flags);
int sdp_device_record_register(sdp_session_t *sess, bdaddr_t *device, sdp_record_t *rec, uint8_t flags);

/*
 * Unregister a service record.
 */
int sdp_record_unregister(sdp_session_t *sess, sdp_record_t *rec);
int sdp_device_record_unregister(sdp_session_t *sess, bdaddr_t *device, sdp_record_t *rec);

/*
 * Update an existing service record.  (Calling this function
 * before a previous call to sdp_record_register() will result
 * in an error.)
 */
int sdp_record_update(sdp_session_t *sess, const sdp_record_t *rec);
int sdp_device_record_update(sdp_session_t *sess, bdaddr_t *device, const sdp_record_t *rec);

void sdp_record_print(const sdp_record_t *rec);

/*
 * UUID functions
 */
uuid_t *sdp_uuid16_create(uuid_t *uuid, uint16_t data);
uuid_t *sdp_uuid32_create(uuid_t *uuid, uint32_t data);
uuid_t *sdp_uuid128_create(uuid_t *uuid, const void *data);
int sdp_uuid16_cmp(const void *p1, const void *p2);
int sdp_uuid128_cmp(const void *p1, const void *p2);
uuid_t *sdp_uuid_to_uuid128(uuid_t *uuid);
void sdp_uuid16_to_uuid128(uuid_t *uuid128, uuid_t *uuid16);
int sdp_uuid128_to_uuid(uuid_t *uuid);
int sdp_uuid_to_proto(uuid_t *uuid);
int sdp_uuid_extract(const uint8_t *buffer, uuid_t *uuid, int *scanned);
void sdp_uuid_print(const uuid_t *uuid);

#define MAX_LEN_UUID_STR 37
#define MAX_LEN_PROTOCOL_UUID_STR 8
#define MAX_LEN_SERVICECLASS_UUID_STR 28
#define MAX_LEN_PROFILEDESCRIPTOR_UUID_STR 28

int sdp_uuid2strn(const uuid_t *uuid, char *str, size_t n);
int sdp_proto_uuid2strn(const uuid_t *uuid, char *str, size_t n);
int sdp_svclass_uuid2strn(const uuid_t *uuid, char *str, size_t n);
int sdp_profile_uuid2strn(const uuid_t *uuid, char *str, size_t n);

/*
 * In all the sdp_get_XXX(handle, XXX *xxx) functions below, 
 * the XXX * is set to point to the value, should it exist
 * and 0 is returned. If the value does not exist, -1 is
 * returned and errno set to ENODATA.
 *
 * In all the methods below, the memory management rules are
 * simple. Don't free anything! The pointer returned, in the
 * case of constructed types, is a pointer to the contents 
 * of the sdp_record_t.
 */

/*
 * Get the access protocols from the service record
 */
int sdp_get_access_protos(const sdp_record_t *rec, sdp_list_t **protos);

/*
 * Get the additional access protocols from the service record
 */
int sdp_get_add_access_protos(const sdp_record_t *rec, sdp_list_t **pap);

/*
 * Extract the list of browse groups to which the service belongs.
 * When set, seqp contains elements of GroupID (uint16_t) 
 */
static inline int sdp_get_browse_groups(const sdp_record_t *rec, sdp_list_t **seqp)
{
	return sdp_get_uuidseq_attr(rec, SDP_ATTR_BROWSE_GRP_LIST, seqp);
}

/*
 * Extract language attribute meta-data of the service record. 
 * For each language in the service record, LangSeq has a struct of type
 * sdp_lang_attr_t. 
 */
int sdp_get_lang_attr(const sdp_record_t *rec, sdp_list_t **langSeq);

/*
 * Extract the Bluetooth profile descriptor sequence from a record.
 * Each element in the list is of type sdp_profile_desc_t
 * which contains the UUID of the profile and its version number
 * (encoded as major and minor in the high-order 8bits
 * and low-order 8bits respectively of the uint16_t)
 */
int sdp_get_profile_descs(const sdp_record_t *rec, sdp_list_t **profDesc);

/*
 * Extract SDP server version numbers 
 * 
 * Note: that this is an attribute of the SDP server only and
 * contains a list of uint16_t each of which represent the
 * major and minor SDP version numbers supported by this server
 */
int sdp_get_server_ver(const sdp_record_t *rec, sdp_list_t **pVnumList);

int sdp_get_service_id(const sdp_record_t *rec, uuid_t *uuid);
int sdp_get_group_id(const sdp_record_t *rec, uuid_t *uuid);
int sdp_get_record_state(const sdp_record_t *rec, uint32_t *svcRecState);
int sdp_get_service_avail(const sdp_record_t *rec, uint8_t *svcAvail);
int sdp_get_service_ttl(const sdp_record_t *rec, uint32_t *svcTTLInfo);
int sdp_get_database_state(const sdp_record_t *rec, uint32_t *svcDBState);

static inline int sdp_get_service_name(const sdp_record_t *rec, char *str, int len)
{
	return sdp_get_string_attr(rec, SDP_ATTR_SVCNAME_PRIMARY, str, len);
}

static inline int sdp_get_service_desc(const sdp_record_t *rec, char *str, int len)
{
	return sdp_get_string_attr(rec, SDP_ATTR_SVCDESC_PRIMARY, str, len);
}

static inline int sdp_get_provider_name(const sdp_record_t *rec, char *str, int len)
{
	return sdp_get_string_attr(rec, SDP_ATTR_PROVNAME_PRIMARY, str, len);
}

static inline int sdp_get_doc_url(const sdp_record_t *rec, char *str, int len)
{
	return sdp_get_string_attr(rec, SDP_ATTR_DOC_URL, str, len);
}

static inline int sdp_get_clnt_exec_url(const sdp_record_t *rec, char *str, int len)
{
	return sdp_get_string_attr(rec, SDP_ATTR_CLNT_EXEC_URL, str, len);
}

static inline int sdp_get_icon_url(const sdp_record_t *rec, char *str, int len)
{
	return sdp_get_string_attr(rec, SDP_ATTR_ICON_URL, str, len);
}

/*
 * Generate unique transaction identifiers
 */
static inline uint16_t sdp_gen_tid(sdp_session_t *session)
{
	return session->tid++;
}

sdp_record_t *sdp_extract_pdu(const uint8_t *pdata, int *scanned);
sdp_data_t *sdp_extract_string(uint8_t *, int *);

void sdp_data_print(sdp_data_t *data);
void sdp_print_service_attr(sdp_list_t *alist);

int sdp_attrid_comp_func(const void *key1, const void *key2);

void sdp_set_seq_len(uint8_t *ptr, uint32_t length);
void sdp_set_attrid(sdp_buf_t *pdu, uint16_t id);
void sdp_append_to_pdu(sdp_buf_t *dst, sdp_data_t *d);
void sdp_append_to_buf(sdp_buf_t *dst, uint8_t *data, uint32_t len);

int sdp_gen_pdu(sdp_buf_t *pdu, sdp_data_t *data);
int sdp_gen_record_pdu(const sdp_record_t *rec, sdp_buf_t *pdu);

int sdp_extract_seqtype(const uint8_t *buf, uint8_t *dtdp, int *seqlen);

sdp_data_t *sdp_extract_attr(const uint8_t *pdata, int *extractedLength, sdp_record_t *rec);

void sdp_pattern_add_uuid(sdp_record_t *rec, uuid_t *uuid);
void sdp_pattern_add_uuidseq(sdp_record_t *rec, sdp_list_t *seq);

int sdp_send_req_w4_rsp(sdp_session_t *session, uint8_t *req, uint8_t *rsp, uint32_t reqsize, uint32_t *rspsize);

typedef struct {
	uint8_t length;
	unsigned char data[16];
} __attribute__ ((packed)) sdp_cstate_t;

#ifdef __cplusplus
}
#endif

#endif /* __SDP_LIB_H */