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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2014 Instituto Nokia de Tecnologia - INdT
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
struct btd_attribute;
void gatt_init(void);
void gatt_cleanup(void);
/*
* Read operation result callback. Called from the service implementation
* informing the core (ATT layer) the result of read operation.
* @err: error in -errno format.
* @value: value of the attribute read.
* @len: length of value.
* @user_data: user_data passed in btd_attr_read_t callback.
*/
typedef void (*btd_attr_read_result_t) (int err, uint8_t *value, size_t len,
void *user_data);
/*
* Service implementation callback passed to core (ATT layer). It manages read
* operations received from remote devices.
* @attr: reference of the attribute to be read.
* @result: callback called from the service implementation informing the
* value of attribute read.
* @user_data: user_data passed in btd_attr_read_result_t callback.
*/
typedef void (*btd_attr_read_t) (struct btd_attribute *attr,
btd_attr_read_result_t result,
void *user_data);
/*
* Write operation result callback. Called from the service implementation
* informing the core (ATT layer) the result of the write operation. It is used
* to manage Write Request operations.
* @err: error in -errno format.
* @user_data: user_data passed in btd_attr_write_t callback.
*/
typedef void (*btd_attr_write_result_t) (int err, void *user_data);
/*
* Service implementation callback passed to core (ATT layer). It manages write
* operations received from remote devices.
* @attr: reference of the attribute to be changed.
* @value: new attribute value.
* @len: length of value.
* @result: callback called from the service implementation informing the
* result of the write operation.
* @user_data: user_data passed in btd_attr_write_result_t callback.
*/
typedef void (*btd_attr_write_t) (struct btd_attribute *attr,
const uint8_t *value, size_t len,
btd_attr_write_result_t result,
void *user_data);
/* btd_gatt_add_service - Add a service declaration to local attribute database.
* @uuid: Service UUID.
*
* Returns a reference to service declaration attribute. In case of error,
* NULL is returned.
*/
struct btd_attribute *btd_gatt_add_service(const bt_uuid_t *uuid);
/*
* btd_gatt_remove_service - Remove a service (along with all its
* characteristics) from the local attribute database.
* @service: Service declaration attribute.
*/
void btd_gatt_remove_service(struct btd_attribute *service);
/*
* btd_gatt_add_char - Add a characteristic (declaration and value attributes)
* to local attribute database.
* @uuid: Characteristic UUID (16-bits or 128-bits).
* @properties: Characteristic properties. See Core SPEC 4.1 page 2183.
* @read_cb: Callback used to provide the characteristic value.
* @write_cb: Callback called to notify the implementation that a new value
* is available.
*
* Returns a reference to characteristic value attribute. In case of error,
* NULL is returned.
*/
struct btd_attribute *btd_gatt_add_char(const bt_uuid_t *uuid,
uint8_t properties,
btd_attr_read_t read_cb,
btd_attr_write_t write_cb);
/*
* btd_gatt_add_char_desc - Add a characteristic descriptor to the local
* attribute database.
* @uuid: Characteristic Descriptor UUID (16-bits or 128-bits).
* @read_cb: Callback that should be called once the characteristic
* descriptor attribute is read.
* @write_cb: Callback that should be called once the characteristic
* descriptor attribute is written.
*
* Returns a reference to characteristic descriptor attribute. In case of
* error, NULL is returned.
*/
struct btd_attribute *btd_gatt_add_char_desc(const bt_uuid_t *uuid,
btd_attr_read_t read_cb,
btd_attr_write_t write_cb);
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