att.c File Reference

att protocol implementation More...

#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include "io.h"
#include "queue.h"
#include "util.h"
#include "timeout.h"
#include "bluetooth.h"
#include "uuid.h"
#include "att.h"
#include "crypto.h"

Go to the source code of this file.

Data Structures
struct	bt_att
struct	sign_info
struct	att_send_op
struct	att_notify
struct	att_disconn
struct	timeout_data
struct	notify_data

Macros
#define	ATT_MIN_PDU_LEN   1 /* At least 1 byte for the opcode. */
#define	ATT_OP_CMD_MASK   0x40
#define	ATT_OP_SIGNED_MASK   0x80
#define	ATT_TIMEOUT_INTERVAL   30000 /* 30000 ms */
#define	BT_ATT_SIGNATURE_LEN   12

Enumerations
enum	att_op_type {   ATT_OP_TYPE_REQ, ATT_OP_TYPE_RSP, ATT_OP_TYPE_CMD, ATT_OP_TYPE_IND,   ATT_OP_TYPE_NOT, ATT_OP_TYPE_CONF, ATT_OP_TYPE_UNKNOWN }

Functions
static enum att_op_type	get_op_type (uint8_t opcode)
static uint8_t	get_req_opcode (uint8_t rsp_opcode)
static void	destroy_att_send_op (void *data)
	destroy att send operation calls the destroy callback with user_data as an argument free pdu data More...
static void	cancel_att_send_op (struct att_send_op *op)
static void	destroy_att_notify (void *data)
static bool	match_notify_id (const void *a, const void *b)
static void	destroy_att_disconn (void *data)
static bool	match_disconn_id (const void *a, const void *b)
static bool	encode_pdu (struct bt_att *att, struct att_send_op *op, const void *pdu, uint16_t length)
static struct att_send_op *	create_att_send_op (struct bt_att *att, uint8_t opcode, const void *pdu, uint16_t length, bt_att_response_func_t callback, void *user_data, bt_att_destroy_func_t destroy)
static struct att_send_op *	pick_next_send_op (struct bt_att *att)
static bool	timeout_cb (void *user_data)
static void	write_watch_destroy (void *user_data)
static bool	can_write_data (struct io *io, void *user_data)
static void	wakeup_writer (struct bt_att *att)
static void	disconn_handler (void *data, void *user_data)
static bool	disconnect_cb (struct io *io, void *user_data)
static bool	change_security (struct bt_att *att, uint8_t ecode)
static bool	handle_error_rsp (struct bt_att *att, uint8_t *pdu, ssize_t pdu_len, uint8_t *opcode)
static void	handle_rsp (struct bt_att *att, uint8_t opcode, uint8_t *pdu, ssize_t pdu_len)
static void	handle_conf (struct bt_att *att, uint8_t *pdu, ssize_t pdu_len)
static bool	opcode_match (uint8_t opcode, uint8_t test_opcode)
static void	respond_not_supported (struct bt_att *att, uint8_t opcode)
static bool	handle_signed (struct bt_att *att, uint8_t opcode, uint8_t *pdu, ssize_t pdu_len)
static void	handle_notify (struct bt_att *att, uint8_t opcode, uint8_t *pdu, ssize_t pdu_len)
static bool	can_read_data (struct io *io, void *user_data)
static bool	is_io_l2cap_based (int fd)
static void	bt_att_free (struct bt_att *att)
struct bt_att *	bt_att_new (int fd, bool ext_signed)
struct bt_att *	bt_att_ref (struct bt_att *att)
void	bt_att_unref (struct bt_att *att)
bool	bt_att_set_close_on_unref (struct bt_att *att, bool do_close)
int	bt_att_get_fd (struct bt_att *att)
bool	bt_att_set_debug (struct bt_att *att, bt_att_debug_func_t callback, void *user_data, bt_att_destroy_func_t destroy)
uint16_t	bt_att_get_mtu (struct bt_att *att)
bool	bt_att_set_mtu (struct bt_att *att, uint16_t mtu)
bool	bt_att_set_timeout_cb (struct bt_att *att, bt_att_timeout_func_t callback, void *user_data, bt_att_destroy_func_t destroy)
unsigned int	bt_att_register_disconnect (struct bt_att *att, bt_att_disconnect_func_t callback, void *user_data, bt_att_destroy_func_t destroy)
bool	bt_att_unregister_disconnect (struct bt_att *att, unsigned int id)
unsigned int	bt_att_send (struct bt_att *att, uint8_t opcode, const void *pdu, uint16_t length, bt_att_response_func_t callback, void *user_data, bt_att_destroy_func_t destroy)
static bool	match_op_id (const void *a, const void *b)
bool	bt_att_cancel (struct bt_att *att, unsigned int id)
bool	bt_att_cancel_all (struct bt_att *att)
static uint8_t	att_ecode_from_error (int err)
unsigned int	bt_att_send_error_rsp (struct bt_att *att, uint8_t opcode, uint16_t handle, int error)
unsigned int	bt_att_register (struct bt_att *att, uint8_t opcode, bt_att_notify_func_t callback, void *user_data, bt_att_destroy_func_t destroy)
bool	bt_att_unregister (struct bt_att *att, unsigned int id)
bool	bt_att_unregister_all (struct bt_att *att)
int	bt_att_get_security (struct bt_att *att)
bool	bt_att_set_security (struct bt_att *att, int level)
static bool	sign_set_key (struct sign_info **sign, uint8_t key[16], bt_att_counter_func_t func, void *user_data)
bool	bt_att_set_local_key (struct bt_att *att, uint8_t sign_key[16], bt_att_counter_func_t func, void *user_data)
bool	bt_att_set_remote_key (struct bt_att *att, uint8_t sign_key[16], bt_att_counter_func_t func, void *user_data)
bool	bt_att_has_crypto (struct bt_att *att)

Variables
struct {
uint8_t   opcode
enum att_op_type   type
}	att_opcode_type_table []
struct {
uint8_t   req_opcode
uint8_t   rsp_opcode
}	att_req_rsp_mapping_table []

Detailed Description

att protocol implementation

Author

Gilbert Brault

Copyright

Gilbert Brault 2015 the original work comes from bluez v5.39 value add: documenting main features

See also

gatt-helpers.c for pdu creation

Definition in file att.c.

Macro Definition Documentation

#define ATT_MIN_PDU_LEN   1 /* At least 1 byte for the opcode. */

Definition at line 51 of file att.c.

Referenced by can_read_data().

#define ATT_OP_CMD_MASK   0x40

Definition at line 52 of file att.c.

#define ATT_OP_SIGNED_MASK   0x80

Definition at line 53 of file att.c.

Referenced by encode_pdu(), and handle_notify().

#define ATT_TIMEOUT_INTERVAL   30000 /* 30000 ms */

Definition at line 54 of file att.c.

Referenced by can_write_data().

#define BT_ATT_SIGNATURE_LEN   12

Definition at line 57 of file att.c.

Referenced by encode_pdu(), handle_notify(), and handle_signed().

Enumeration Type Documentation

enum att_op_type

Enumerator
ATT_OP_TYPE_REQ
ATT_OP_TYPE_RSP
ATT_OP_TYPE_CMD
ATT_OP_TYPE_IND
ATT_OP_TYPE_NOT
ATT_OP_TYPE_CONF
ATT_OP_TYPE_UNKNOWN

Definition at line 129 of file att.c.

Function Documentation

static uint8_t att_ecode_from_error ( int  err )

static

Definition at line 1340 of file att.c.

References BT_ATT_ERROR_INSUFFICIENT_RESOURCES, BT_ATT_ERROR_INVALID_HANDLE, BT_ATT_ERROR_UNLIKELY, BT_ERROR_ALREADY_IN_PROGRESS, and BT_ERROR_OUT_OF_RANGE.

Referenced by bt_att_send_error_rsp().

bool bt_att_cancel	(	struct bt_att *	att,
		unsigned int	id
	)

Definition at line 1278 of file att.c.

References cancel_att_send_op(), destroy_att_send_op(), att_send_op::id, bt_att::ind_queue, match_op_id(), bt_att::pending_ind, bt_att::pending_req, queue_remove_if(), bt_att::req_queue, UINT_TO_PTR, wakeup_writer(), and bt_att::write_queue.

Referenced by bt_gatt_client_cancel_all(), bt_gatt_request_cancel(), cancel_request(), complete_unregister_notify(), and notify_data_cleanup().

bool bt_att_cancel_all

(

struct bt_att *

att

)

Definition at line 1320 of file att.c.

References cancel_att_send_op(), destroy_att_send_op(), bt_att::ind_queue, bt_att::pending_ind, bt_att::pending_req, queue_remove_all(), bt_att::req_queue, and bt_att::write_queue.

Referenced by bt_att_unref(), and disconnect_cb().

static void bt_att_free ( struct bt_att *  att )

static

Definition at line 960 of file att.c.

References bt_crypto_unref(), bt_att::buf, bt_att::crypto, bt_att::debug_data, bt_att::debug_destroy, destroy_att_send_op(), bt_att::disconn_list, bt_att::ind_queue, bt_att::io, io_destroy(), bt_att::local_sign, bt_att::notify_list, bt_att::pending_ind, bt_att::pending_req, queue_destroy(), bt_att::remote_sign, bt_att::req_queue, bt_att::timeout_data, bt_att::timeout_destroy, and bt_att::write_queue.

Referenced by bt_att_new(), and bt_att_unref().

int bt_att_get_fd

(

struct bt_att *

att

)

Definition at line 1087 of file att.c.

References bt_att::fd.

uint16_t bt_att_get_mtu

(

struct bt_att *

att

)

Definition at line 1111 of file att.c.

References bt_att::mtu.

Referenced by bt_gatt_client_get_mtu(), bt_gatt_client_read_multiple(), bt_gatt_client_write_long_value(), exchange_mtu_cb(), prepare_write_cb(), and read_long_cb().

int bt_att_get_security

(

struct bt_att *

att

)

Definition at line 1448 of file att.c.

References BT_SECURITY, bt_att::fd, bt_att::io_on_l2cap, bt_att::io_sec_level, bt_security::level, and SOL_BLUETOOTH.

Referenced by bt_gatt_client_get_security(), bt_gatt_client_write_without_response(), and change_security().

bool bt_att_has_crypto

(

struct bt_att *

att

)

Definition at line 1524 of file att.c.

References bt_att::crypto.

struct bt_att* bt_att_new	(	int	fd,
		bool	ext_signed
	)

Definition at line 991 of file att.c.

References BT_ATT_DEFAULT_LE_MTU, bt_att_free(), bt_att_ref(), bt_crypto_new(), BT_SECURITY_LOW, bt_att::buf, can_read_data(), bt_att::crypto, bt_att::disconn_list, disconnect_cb(), bt_att::ext_signed, bt_att::fd, bt_att::ind_queue, bt_att::io, io_new(), bt_att::io_on_l2cap, bt_att::io_sec_level, io_set_disconnect_handler(), io_set_read_handler(), is_io_l2cap_based(), bt_att::mtu, new0, bt_att::notify_list, queue_new(), bt_att::req_queue, and bt_att::write_queue.

Referenced by client_create().

struct bt_att* bt_att_ref

(

struct bt_att *

att

)

Definition at line 1055 of file att.c.

References bt_att::ref_count.

Referenced by bt_att_new(), bt_gatt_client_new(), can_read_data(), disconnect_cb(), and handle_notify().

unsigned int bt_att_register	(	struct bt_att *	att,
		uint8_t	opcode,
		bt_att_notify_func_t	callback,
		void *	user_data,
		bt_att_destroy_func_t	destroy
	)

Definition at line 1389 of file att.c.

References att_notify::callback, att_notify::destroy, att_notify::id, bt_att::io, new0, bt_att::next_reg_id, bt_att::notify_list, opcode, att_notify::opcode, queue_push_tail(), and att_notify::user_data.

Referenced by bt_gatt_client_new().

unsigned int bt_att_register_disconnect	(	struct bt_att *	att,
		bt_att_disconnect_func_t	callback,
		void *	user_data,
		bt_att_destroy_func_t	destroy
	)

Definition at line 1158 of file att.c.

References att_disconn::callback, att_disconn::destroy, bt_att::disconn_list, att_disconn::id, bt_att::io, new0, bt_att::next_reg_id, queue_push_tail(), and att_disconn::user_data.

Referenced by bt_gatt_client_new(), and client_create().

unsigned int bt_att_send	(	struct bt_att *	att,
		uint8_t	opcode,
		const void *	pdu,
		uint16_t	length,
		bt_att_response_func_t	callback,
		void *	user_data,
		bt_att_destroy_func_t	destroy
	)

encode & send an att message If (op-code type == ATT_OP_TYPE_REQ) process the response with callback function see att_opcode_type_table (att.c) for opcode type definition

Parameters

att	structure of the communication channel
opcode	att message op-code
pdu	protocol data unit buffer
length	size of pdu
callback	callback function depending on opcode to process response
user_data	request data when relevant
destroy	function to manage user_data

Returns

att message sequence number or 0 if error

Definition at line 1220 of file att.c.

References ATT_OP_TYPE_CMD, ATT_OP_TYPE_CONF, ATT_OP_TYPE_IND, ATT_OP_TYPE_NOT, ATT_OP_TYPE_REQ, ATT_OP_TYPE_RSP, ATT_OP_TYPE_UNKNOWN, create_att_send_op(), att_send_op::id, bt_att::ind_queue, bt_att::io, bt_att::next_send_id, att_send_op::pdu, queue_push_tail(), bt_att::req_queue, att_send_op::type, wakeup_writer(), and bt_att::write_queue.

Referenced by bt_att_send_error_rsp(), bt_gatt_client_prepare_write(), bt_gatt_client_read_long_value(), bt_gatt_client_read_multiple(), bt_gatt_client_read_value(), bt_gatt_client_write_execute(), bt_gatt_client_write_long_value(), bt_gatt_client_write_value(), bt_gatt_client_write_without_response(), bt_gatt_discover_characteristics(), bt_gatt_discover_descriptors(), bt_gatt_discover_included_services(), bt_gatt_exchange_mtu(), bt_gatt_read_by_type(), cancel_long_write_req(), cancel_prep_write_session(), complete_write_long_op(), discover_chrcs_cb(), discover_descs_cb(), discover_included_cb(), discover_services(), find_by_type_val_cb(), handle_next_prep_write(), notify_cb(), notify_data_write_ccc(), read_by_grp_type_cb(), read_by_type_cb(), read_included(), read_included_cb(), read_long_cb(), and respond_not_supported().

unsigned int bt_att_send_error_rsp	(	struct bt_att *	att,
		uint8_t	opcode,
		uint16_t	handle,
		int	error
	)

Definition at line 1368 of file att.c.

References att_ecode_from_error(), BT_ATT_OP_ERROR_RSP, bt_att_send(), bt_att_pdu_error_rsp::ecode, bt_att_pdu_error_rsp::handle, bt_att_pdu_error_rsp::opcode, opcode, and put_le16().

bool bt_att_set_close_on_unref	(	struct bt_att *	att,
		bool	do_close
	)

Definition at line 1079 of file att.c.

References bt_att::io, and io_set_close_on_destroy().

Referenced by client_create().

bool bt_att_set_debug	(	struct bt_att *	att,
		bt_att_debug_func_t	callback,
		void *	user_data,
		bt_att_destroy_func_t	destroy
	)

Definition at line 1095 of file att.c.

References bt_att::debug_callback, bt_att::debug_data, and bt_att::debug_destroy.

Referenced by client_create().

bool bt_att_set_local_key	(	struct bt_att *	att,
		uint8_t	sign_key[16],
		bt_att_counter_func_t	func,
		void *	user_data
	)

Definition at line 1506 of file att.c.

References bt_att::local_sign, and sign_set_key().

Referenced by cmd_set_sign_key().

bool bt_att_set_mtu	(	struct bt_att *	att,
		uint16_t	mtu
	)

Definition at line 1119 of file att.c.

References BT_ATT_DEFAULT_LE_MTU, bt_att::buf, and bt_att::mtu.

Referenced by mtu_cb().

bool bt_att_set_remote_key	(	struct bt_att *	att,
		uint8_t	sign_key[16],
		bt_att_counter_func_t	func,
		void *	user_data
	)

Definition at line 1515 of file att.c.

References bt_att::remote_sign, and sign_set_key().

bool bt_att_set_security	(	struct bt_att *	att,
		int	level
	)

Definition at line 1467 of file att.c.

References BT_ATT_SECURITY_AUTO, BT_ATT_SECURITY_HIGH, BT_SECURITY, bt_att::fd, bt_att::io_on_l2cap, bt_att::io_sec_level, bt_security::level, and SOL_BLUETOOTH.

Referenced by bt_gatt_client_set_security(), and change_security().

bool bt_att_set_timeout_cb	(	struct bt_att *	att,
		bt_att_timeout_func_t	callback,
		void *	user_data,
		bt_att_destroy_func_t	destroy
	)

Definition at line 1141 of file att.c.

References bt_att::timeout_callback, bt_att::timeout_data, and bt_att::timeout_destroy.

void bt_att_unref

(

struct bt_att *

att

)

Definition at line 1065 of file att.c.

References bt_att_cancel_all(), bt_att_free(), bt_att_unregister_all(), and bt_att::ref_count.

Referenced by att_disconnect_cb(), bt_gatt_client_free(), can_read_data(), client_create(), client_destroy(), disconnect_cb(), and handle_notify().

bool bt_att_unregister	(	struct bt_att *	att,
		unsigned int	id
	)

Definition at line 1421 of file att.c.

References destroy_att_notify(), match_notify_id(), bt_att::notify_list, queue_remove_if(), and UINT_TO_PTR.

Referenced by bt_gatt_client_free().

bool bt_att_unregister_all

(

struct bt_att *

att

)

Definition at line 1437 of file att.c.

References destroy_att_disconn(), destroy_att_notify(), bt_att::disconn_list, bt_att::notify_list, and queue_remove_all().

Referenced by bt_att_unref(), and disconnect_cb().

bool bt_att_unregister_disconnect	(	struct bt_att *	att,
		unsigned int	id
	)

Definition at line 1189 of file att.c.

References destroy_att_disconn(), bt_att::disconn_list, match_disconn_id(), queue_remove_if(), and UINT_TO_PTR.

Referenced by bt_gatt_client_free().

static bool can_read_data ( struct io *  io, void *  user_data  )

static

Definition at line 863 of file att.c.

References ATT_MIN_PDU_LEN, ATT_OP_TYPE_CMD, ATT_OP_TYPE_CONF, ATT_OP_TYPE_IND, ATT_OP_TYPE_NOT, ATT_OP_TYPE_REQ, ATT_OP_TYPE_RSP, ATT_OP_TYPE_UNKNOWN, bt_att_ref(), bt_att_unref(), bt_att::buf, bt_att::debug_callback, bt_att::debug_data, bt_att::fd, get_op_type(), handle_conf(), handle_notify(), handle_rsp(), bt_att::in_req, bt_att::io, io_shutdown(), bt_att::mtu, opcode, util_debug(), and util_hexdump().

Referenced by bt_att_new().

static bool can_write_data ( struct io *  io, void *  user_data  )

static

Definition at line 481 of file att.c.

References timeout_data::att, ATT_OP_TYPE_CMD, ATT_OP_TYPE_CONF, ATT_OP_TYPE_IND, ATT_OP_TYPE_NOT, ATT_OP_TYPE_REQ, ATT_OP_TYPE_RSP, ATT_OP_TYPE_UNKNOWN, ATT_TIMEOUT_INTERVAL, BT_ATT_OP_ERROR_RSP, bt_att::debug_callback, bt_att::debug_data, destroy_att_send_op(), timeout_data::id, bt_att::in_req, io_send(), new0, bt_att::pending_ind, bt_att::pending_req, pick_next_send_op(), timeout_add(), timeout_cb(), util_debug(), and util_hexdump().

Referenced by wakeup_writer().

static void cancel_att_send_op ( struct att_send_op *  op )

static

Definition at line 249 of file att.c.

References att_send_op::callback, att_send_op::destroy, and att_send_op::user_data.

Referenced by bt_att_cancel(), and bt_att_cancel_all().

static bool change_security ( struct bt_att *  att, uint8_t  ecode  )

static

Definition at line 617 of file att.c.

References BT_ATT_ERROR_AUTHENTICATION, BT_ATT_ERROR_INSUFFICIENT_ENCRYPTION, bt_att_get_security(), BT_ATT_SECURITY_AUTO, BT_ATT_SECURITY_HIGH, BT_ATT_SECURITY_MEDIUM, and bt_att_set_security().

Referenced by handle_error_rsp().

static struct att_send_op* create_att_send_op ( struct bt_att *  att, uint8_t  opcode, const void *  pdu, uint16_t  length, bt_att_response_func_t  callback, void *  user_data, bt_att_destroy_func_t  destroy  )

static

Definition at line 354 of file att.c.

References ATT_OP_TYPE_IND, ATT_OP_TYPE_REQ, ATT_OP_TYPE_UNKNOWN, att_send_op::callback, att_send_op::destroy, encode_pdu(), get_op_type(), new0, opcode, att_send_op::opcode, att_send_op::type, and att_send_op::user_data.

Referenced by bt_att_send().

static void destroy_att_disconn ( void *  data )

static

Definition at line 293 of file att.c.

References att_disconn::destroy, and att_disconn::user_data.

Referenced by bt_att_unregister_all(), and bt_att_unregister_disconnect().

static void destroy_att_notify ( void *  data )

static

Definition at line 267 of file att.c.

References att_notify::destroy, and att_notify::user_data.

Referenced by bt_att_unregister(), and bt_att_unregister_all().

static void destroy_att_send_op ( void *  data )

static

destroy att send operation calls the destroy callback with user_data as an argument free pdu data

Parameters

data	att_send_op pointer

Definition at line 235 of file att.c.

References att_send_op::destroy, att_send_op::pdu, att_send_op::timeout_id, timeout_remove(), and att_send_op::user_data.

Referenced by bt_att_cancel(), bt_att_cancel_all(), bt_att_free(), can_write_data(), handle_conf(), handle_rsp(), and timeout_cb().

static void disconn_handler ( void *  data, void *  user_data  )

static

Definition at line 571 of file att.c.

References att_disconn::callback, PTR_TO_INT, att_disconn::removed, and att_disconn::user_data.

Referenced by disconnect_cb().

static bool disconnect_cb ( struct io *  io, void *  user_data  )

static

Definition at line 583 of file att.c.

References bt_att_cancel_all(), bt_att_ref(), bt_att_unref(), bt_att_unregister_all(), bt_att::debug_callback, bt_att::debug_data, disconn_handler(), bt_att::disconn_list, bt_att::fd, INT_TO_PTR, bt_att::io, io_destroy(), queue_foreach(), and util_debug().

Referenced by bt_att_new().

static bool encode_pdu ( struct bt_att *  att, struct att_send_op *  op, const void *  pdu, uint16_t  length  )

static

Definition at line 311 of file att.c.

References ATT_OP_SIGNED_MASK, BT_ATT_SIGNATURE_LEN, bt_crypto_sign_att(), sign_info::counter, bt_att::crypto, bt_att::debug_callback, bt_att::debug_data, sign_info::key, att_send_op::len, bt_att::local_sign, bt_att::mtu, att_send_op::opcode, att_send_op::pdu, sign_info::user_data, and util_debug().

Referenced by create_att_send_op().

static enum att_op_type get_op_type ( uint8_t  opcode )

static

Definition at line 174 of file att.c.

References ATT_OP_TYPE_UNKNOWN, and att_opcode_type_table.

Referenced by can_read_data(), create_att_send_op(), handle_notify(), and opcode_match().

static uint8_t get_req_opcode ( uint8_t  rsp_opcode )

static

Definition at line 204 of file att.c.

References att_req_rsp_mapping_table.

Referenced by handle_rsp().

static void handle_conf ( struct bt_att *  att, uint8_t *  pdu, ssize_t  pdu_len  )

static

Definition at line 726 of file att.c.

References BT_ATT_OP_HANDLE_VAL_CONF, att_send_op::callback, bt_att::debug_callback, bt_att::debug_data, destroy_att_send_op(), bt_att::io, io_shutdown(), bt_att::pending_ind, att_send_op::user_data, util_debug(), and wakeup_writer().

Referenced by can_read_data().

static bool handle_error_rsp ( struct bt_att *  att, uint8_t *  pdu, ssize_t  pdu_len, uint8_t *  opcode  )

static

Definition at line 637 of file att.c.

References change_security(), bt_att::debug_callback, bt_att::debug_data, bt_att_pdu_error_rsp::ecode, bt_att_pdu_error_rsp::opcode, bt_att::pending_req, queue_push_head(), bt_att::req_queue, and util_debug().

Referenced by handle_rsp().

static void handle_notify ( struct bt_att *  att, uint8_t  opcode, uint8_t *  pdu, ssize_t  pdu_len  )

static

Definition at line 817 of file att.c.

References ATT_OP_SIGNED_MASK, ATT_OP_TYPE_REQ, bt_att_ref(), BT_ATT_SIGNATURE_LEN, bt_att_unref(), att_notify::callback, queue_entry::data, bt_att::ext_signed, get_op_type(), handle_signed(), queue_entry::next, bt_att::notify_list, att_notify::opcode, opcode_match(), queue_get_entries(), queue_isempty(), respond_not_supported(), and att_notify::user_data.

Referenced by can_read_data().

static void handle_rsp ( struct bt_att *  att, uint8_t  opcode, uint8_t *  pdu, ssize_t  pdu_len  )

static

Definition at line 665 of file att.c.

References BT_ATT_OP_ERROR_RSP, att_send_op::callback, bt_att::debug_callback, bt_att::debug_data, destroy_att_send_op(), get_req_opcode(), handle_error_rsp(), bt_att::io, io_shutdown(), opcode, att_send_op::opcode, att_send_op::pdu, bt_att::pending_req, req_opcode, rsp_opcode, att_send_op::user_data, util_debug(), and wakeup_writer().

Referenced by can_read_data().

static bool handle_signed ( struct bt_att *  att, uint8_t  opcode, uint8_t *  pdu, ssize_t  pdu_len  )

static

Definition at line 780 of file att.c.

References BT_ATT_SIGNATURE_LEN, bt_crypto_sign_att(), sign_info::counter, bt_att::crypto, bt_att::debug_callback, bt_att::debug_data, get_le32(), sign_info::key, bt_att::remote_sign, sign_info::user_data, and util_debug().

Referenced by handle_notify().

static bool is_io_l2cap_based ( int  fd )

static

Definition at line 935 of file att.c.

References AF_BLUETOOTH, and BTPROTO_L2CAP.

Referenced by bt_att_new().

static bool match_disconn_id ( const void *  a, const void *  b  )

static

Definition at line 303 of file att.c.

References att_disconn::id, and PTR_TO_UINT.

Referenced by bt_att_unregister_disconnect().

static bool match_notify_id ( const void *  a, const void *  b  )

static

Definition at line 277 of file att.c.

References att_notify::id, and PTR_TO_UINT.

Referenced by bt_att_unregister().

static bool match_op_id ( const void *  a, const void *  b  )

static

Definition at line 1270 of file att.c.

References att_send_op::id, and PTR_TO_UINT.

Referenced by bt_att_cancel().

static bool opcode_match ( uint8_t  opcode, uint8_t  test_opcode  )

static

Definition at line 757 of file att.c.

References ATT_OP_TYPE_CMD, ATT_OP_TYPE_REQ, BT_ATT_ALL_REQUESTS, and get_op_type().

Referenced by handle_notify().

static struct att_send_op* pick_next_send_op ( struct bt_att *  att )

static

Definition at line 403 of file att.c.

References bt_att::ind_queue, bt_att::pending_ind, bt_att::pending_req, queue_pop_head(), bt_att::req_queue, and bt_att::write_queue.

Referenced by can_write_data().

static void respond_not_supported ( struct bt_att *  att, uint8_t  opcode  )

static

Definition at line 768 of file att.c.

References BT_ATT_ERROR_REQUEST_NOT_SUPPORTED, BT_ATT_OP_ERROR_RSP, bt_att_send(), bt_att_pdu_error_rsp::ecode, bt_att_pdu_error_rsp::handle, bt_att_pdu_error_rsp::opcode, and opcode.

Referenced by handle_notify().

static bool sign_set_key ( struct sign_info **  sign, uint8_t  key[16], bt_att_counter_func_t  func, void *  user_data  )

static

Definition at line 1490 of file att.c.

References func, and new0.

Referenced by bt_att_set_local_key(), and bt_att_set_remote_key().

static bool timeout_cb ( void *  user_data )

static

Definition at line 438 of file att.c.

References timeout_data::att, bt_att::debug_callback, bt_att::debug_data, destroy_att_send_op(), att_send_op::id, timeout_data::id, bt_att::io, io_shutdown(), att_send_op::opcode, bt_att::pending_ind, bt_att::pending_req, bt_att::timeout_callback, bt_att::timeout_data, att_send_op::timeout_id, timeout_data::user_data, and util_debug().

Referenced by can_write_data().

static void wakeup_writer ( struct bt_att *  att )

static

Definition at line 550 of file att.c.

References can_write_data(), bt_att::ind_queue, bt_att::io, io_set_write_handler(), bt_att::pending_ind, bt_att::pending_req, queue_isempty(), bt_att::req_queue, bt_att::write_queue, write_watch_destroy(), and bt_att::writer_active.

Referenced by bt_att_cancel(), bt_att_send(), handle_conf(), and handle_rsp().

static void write_watch_destroy ( void *  user_data )

static

Definition at line 474 of file att.c.

References bt_att::writer_active.

Referenced by wakeup_writer().

Variable Documentation

const { ... } att_opcode_type_table[]

Referenced by get_op_type().

const { ... } att_req_rsp_mapping_table[]

Initial value:

= {
    { BT_ATT_OP_MTU_REQ,            BT_ATT_OP_MTU_RSP },
    { BT_ATT_OP_FIND_INFO_REQ,      BT_ATT_OP_FIND_INFO_RSP},
    { BT_ATT_OP_FIND_BY_TYPE_VAL_REQ,   BT_ATT_OP_FIND_BY_TYPE_VAL_RSP },
    { BT_ATT_OP_READ_BY_TYPE_REQ,       BT_ATT_OP_READ_BY_TYPE_RSP },
    { BT_ATT_OP_READ_REQ,           BT_ATT_OP_READ_RSP },
    { BT_ATT_OP_READ_BLOB_REQ,      BT_ATT_OP_READ_BLOB_RSP },
    { BT_ATT_OP_READ_MULT_REQ,      BT_ATT_OP_READ_MULT_RSP },
    { BT_ATT_OP_READ_BY_GRP_TYPE_REQ,   BT_ATT_OP_READ_BY_GRP_TYPE_RSP },
    { BT_ATT_OP_WRITE_REQ,          BT_ATT_OP_WRITE_RSP },
    { BT_ATT_OP_PREP_WRITE_REQ,     BT_ATT_OP_PREP_WRITE_RSP },
    { BT_ATT_OP_EXEC_WRITE_REQ,     BT_ATT_OP_EXEC_WRITE_RSP },
    { }
}

Referenced by get_req_opcode().

uint8_t opcode

Definition at line 140 of file att.c.

Referenced by bt_att_register(), bt_att_send_error_rsp(), can_read_data(), create_att_send_op(), handle_rsp(), hci_filter_set_opcode(), hci_send_req(), respond_not_supported(), and result_create().

uint8_t req_opcode

Definition at line 187 of file att.c.

Referenced by handle_rsp().

uint8_t rsp_opcode

Definition at line 188 of file att.c.

Referenced by handle_rsp().

enum att_op_type type

Definition at line 141 of file att.c.

Referenced by gatt_db_find_by_type(), gatt_db_find_by_type_value(), gatt_db_insert_service(), gatt_db_read_by_type(), gatt_db_service_create(), hci_le_add_resolving_list(), hci_le_add_white_list(), hci_le_rm_resolving_list(), hci_le_rm_white_list(), hci_le_set_scan_parameters(), hci_read_transmit_power_level(), hci_send_cmd(), hci_write_inquiry_scan_type(), and new_attribute().