blob: 489869a7139e4a568acaac1936a1ee9c5fdb1b3a [file] [log] [blame]
/******************************************************************************
*
* Copyright (C) 2009-2013 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/************************************************************************************
*
* Filename: btif_gatt_server.c
*
* Description: GATT server implementation
*
***********************************************************************************/
#include <hardware/bluetooth.h>
#include <hardware/bt_gatt.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#define LOG_TAG "bt_btif_gatt"
#include "btif_common.h"
#include "btif_util.h"
#if (defined(BLE_INCLUDED) && (BLE_INCLUDED == TRUE))
#include "gki.h"
#include "bta_api.h"
#include "bta_gatt_api.h"
#include "btif_dm.h"
#include "btif_storage.h"
#include "btif_config.h"
#include "btif_gatt.h"
#include "btif_gatt_util.h"
#include "osi/include/log.h"
/************************************************************************************
** Constants & Macros
************************************************************************************/
#define CHECK_BTGATT_INIT() if (bt_gatt_callbacks == NULL)\
{\
LOG_WARN("%s: BTGATT not initialized", __FUNCTION__);\
return BT_STATUS_NOT_READY;\
} else {\
LOG_VERBOSE("%s", __FUNCTION__);\
}
typedef enum {
BTIF_GATTS_REGISTER_APP = 2000,
BTIF_GATTS_UNREGISTER_APP,
BTIF_GATTS_OPEN,
BTIF_GATTS_CLOSE,
BTIF_GATTS_CREATE_SERVICE,
BTIF_GATTS_ADD_INCLUDED_SERVICE,
BTIF_GATTS_ADD_CHARACTERISTIC,
BTIF_GATTS_ADD_DESCRIPTOR,
BTIF_GATTS_START_SERVICE,
BTIF_GATTS_STOP_SERVICE,
BTIF_GATTS_DELETE_SERVICE,
BTIF_GATTS_SEND_INDICATION,
BTIF_GATTS_SEND_RESPONSE
} btif_gatts_event_t;
/************************************************************************************
** Local type definitions
************************************************************************************/
typedef struct
{
uint8_t value[BTGATT_MAX_ATTR_LEN];
btgatt_response_t response;
btgatt_srvc_id_t srvc_id;
bt_bdaddr_t bd_addr;
bt_uuid_t uuid;
uint32_t trans_id;
uint16_t conn_id;
uint16_t srvc_handle;
uint16_t incl_handle;
uint16_t attr_handle;
uint16_t permissions;
uint16_t len;
uint8_t server_if;
uint8_t is_direct;
uint8_t num_handles;
uint8_t properties;
uint8_t confirm;
uint8_t status;
btgatt_transport_t transport;
} __attribute__((packed)) btif_gatts_cb_t;
/************************************************************************************
** Static variables
************************************************************************************/
extern const btgatt_callbacks_t *bt_gatt_callbacks;
/************************************************************************************
** Static functions
************************************************************************************/
static void btapp_gatts_copy_req_data(UINT16 event, char *p_dest, char *p_src)
{
tBTA_GATTS *p_dest_data = (tBTA_GATTS*) p_dest;
tBTA_GATTS *p_src_data = (tBTA_GATTS*) p_src;
if (!p_src_data || !p_dest_data)
return;
// Copy basic structure first
memcpy(p_dest_data, p_src_data, sizeof(tBTA_GATTS));
// Allocate buffer for request data if necessary
switch (event)
{
case BTA_GATTS_READ_EVT:
case BTA_GATTS_WRITE_EVT:
case BTA_GATTS_EXEC_WRITE_EVT:
case BTA_GATTS_MTU_EVT:
p_dest_data->req_data.p_data = GKI_getbuf(sizeof(tBTA_GATTS_REQ_DATA));
if (p_dest_data->req_data.p_data != NULL)
{
memcpy(p_dest_data->req_data.p_data, p_src_data->req_data.p_data,
sizeof(tBTA_GATTS_REQ_DATA));
}
break;
default:
break;
}
}
static void btapp_gatts_free_req_data(UINT16 event, tBTA_GATTS *p_data)
{
switch (event)
{
case BTA_GATTS_READ_EVT:
case BTA_GATTS_WRITE_EVT:
case BTA_GATTS_EXEC_WRITE_EVT:
case BTA_GATTS_MTU_EVT:
if (p_data && p_data->req_data.p_data)
GKI_freebuf(p_data->req_data.p_data);
break;
default:
break;
}
}
static void btapp_gatts_handle_cback(uint16_t event, char* p_param)
{
LOG_VERBOSE("%s: Event %d", __FUNCTION__, event);
tBTA_GATTS *p_data = (tBTA_GATTS*)p_param;
switch (event)
{
case BTA_GATTS_REG_EVT:
{
bt_uuid_t app_uuid;
bta_to_btif_uuid(&app_uuid, &p_data->reg_oper.uuid);
HAL_CBACK(bt_gatt_callbacks, server->register_server_cb
, p_data->reg_oper.status
, p_data->reg_oper.server_if
, &app_uuid
);
break;
}
case BTA_GATTS_DEREG_EVT:
break;
case BTA_GATTS_CONNECT_EVT:
{
bt_bdaddr_t bda;
bdcpy(bda.address, p_data->conn.remote_bda);
btif_gatt_check_encrypted_link(p_data->conn.remote_bda);
HAL_CBACK(bt_gatt_callbacks, server->connection_cb,
p_data->conn.conn_id, p_data->conn.server_if, TRUE, &bda);
break;
}
case BTA_GATTS_DISCONNECT_EVT:
{
bt_bdaddr_t bda;
bdcpy(bda.address, p_data->conn.remote_bda);
HAL_CBACK(bt_gatt_callbacks, server->connection_cb,
p_data->conn.conn_id, p_data->conn.server_if, FALSE, &bda);
break;
}
case BTA_GATTS_CREATE_EVT:
{
btgatt_srvc_id_t srvc_id;
srvc_id.is_primary = p_data->create.is_primary;
srvc_id.id.inst_id = p_data->create.svc_instance;
bta_to_btif_uuid(&srvc_id.id.uuid, &p_data->create.uuid);
HAL_CBACK(bt_gatt_callbacks, server->service_added_cb,
p_data->create.status, p_data->create.server_if, &srvc_id,
p_data->create.service_id
);
}
break;
case BTA_GATTS_ADD_INCL_SRVC_EVT:
HAL_CBACK(bt_gatt_callbacks, server->included_service_added_cb,
p_data->add_result.status,
p_data->add_result.server_if,
p_data->add_result.service_id,
p_data->add_result.attr_id);
break;
case BTA_GATTS_ADD_CHAR_EVT:
{
bt_uuid_t uuid;
bta_to_btif_uuid(&uuid, &p_data->add_result.char_uuid);
HAL_CBACK(bt_gatt_callbacks, server->characteristic_added_cb,
p_data->add_result.status,
p_data->add_result.server_if,
&uuid,
p_data->add_result.service_id,
p_data->add_result.attr_id);
break;
}
case BTA_GATTS_ADD_CHAR_DESCR_EVT:
{
bt_uuid_t uuid;
bta_to_btif_uuid(&uuid, &p_data->add_result.char_uuid);
HAL_CBACK(bt_gatt_callbacks, server->descriptor_added_cb,
p_data->add_result.status,
p_data->add_result.server_if,
&uuid,
p_data->add_result.service_id,
p_data->add_result.attr_id);
break;
}
case BTA_GATTS_START_EVT:
HAL_CBACK(bt_gatt_callbacks, server->service_started_cb,
p_data->srvc_oper.status,
p_data->srvc_oper.server_if,
p_data->srvc_oper.service_id);
break;
case BTA_GATTS_STOP_EVT:
HAL_CBACK(bt_gatt_callbacks, server->service_stopped_cb,
p_data->srvc_oper.status,
p_data->srvc_oper.server_if,
p_data->srvc_oper.service_id);
break;
case BTA_GATTS_DELELTE_EVT:
HAL_CBACK(bt_gatt_callbacks, server->service_deleted_cb,
p_data->srvc_oper.status,
p_data->srvc_oper.server_if,
p_data->srvc_oper.service_id);
break;
case BTA_GATTS_READ_EVT:
{
bt_bdaddr_t bda;
bdcpy(bda.address, p_data->req_data.remote_bda);
HAL_CBACK(bt_gatt_callbacks, server->request_read_cb,
p_data->req_data.conn_id,p_data->req_data.trans_id, &bda,
p_data->req_data.p_data->read_req.handle,
p_data->req_data.p_data->read_req.offset,
p_data->req_data.p_data->read_req.is_long);
break;
}
case BTA_GATTS_WRITE_EVT:
{
bt_bdaddr_t bda;
bdcpy(bda.address, p_data->req_data.remote_bda);
HAL_CBACK(bt_gatt_callbacks, server->request_write_cb,
p_data->req_data.conn_id,p_data->req_data.trans_id, &bda,
p_data->req_data.p_data->write_req.handle,
p_data->req_data.p_data->write_req.offset,
p_data->req_data.p_data->write_req.len,
p_data->req_data.p_data->write_req.need_rsp,
p_data->req_data.p_data->write_req.is_prep,
p_data->req_data.p_data->write_req.value);
break;
}
case BTA_GATTS_EXEC_WRITE_EVT:
{
bt_bdaddr_t bda;
bdcpy(bda.address, p_data->req_data.remote_bda);
HAL_CBACK(bt_gatt_callbacks, server->request_exec_write_cb,
p_data->req_data.conn_id,p_data->req_data.trans_id, &bda,
p_data->req_data.p_data->exec_write);
break;
}
case BTA_GATTS_CONF_EVT:
HAL_CBACK(bt_gatt_callbacks, server->indication_sent_cb,
p_data->req_data.conn_id, p_data->req_data.status);
break;
case BTA_GATTS_CONGEST_EVT:
HAL_CBACK(bt_gatt_callbacks, server->congestion_cb
, p_data->congest.conn_id
, p_data->congest.congested
);
break;
case BTA_GATTS_MTU_EVT:
HAL_CBACK(bt_gatt_callbacks, server->mtu_changed_cb
, p_data->req_data.conn_id
, p_data->req_data.p_data->mtu
);
break;
case BTA_GATTS_OPEN_EVT:
case BTA_GATTS_CANCEL_OPEN_EVT:
case BTA_GATTS_CLOSE_EVT:
LOG_DEBUG("%s: Empty event (%d)!", __FUNCTION__, event);
break;
default:
LOG_ERROR("%s: Unhandled event (%d)!", __FUNCTION__, event);
break;
}
btapp_gatts_free_req_data(event, p_data);
}
static void btapp_gatts_cback(tBTA_GATTS_EVT event, tBTA_GATTS *p_data)
{
bt_status_t status;
status = btif_transfer_context(btapp_gatts_handle_cback, (uint16_t) event,
(void*)p_data, sizeof(tBTA_GATTS), btapp_gatts_copy_req_data);
ASSERTC(status == BT_STATUS_SUCCESS, "Context transfer failed!", status);
}
static void btgatts_handle_event(uint16_t event, char* p_param)
{
btif_gatts_cb_t* p_cb = (btif_gatts_cb_t*)p_param;
if (!p_cb) return;
LOG_VERBOSE("%s: Event %d", __FUNCTION__, event);
switch (event)
{
case BTIF_GATTS_REGISTER_APP:
{
tBT_UUID uuid;
btif_to_bta_uuid(&uuid, &p_cb->uuid);
BTA_GATTS_AppRegister(&uuid, btapp_gatts_cback);
break;
}
case BTIF_GATTS_UNREGISTER_APP:
BTA_GATTS_AppDeregister(p_cb->server_if);
break;
case BTIF_GATTS_OPEN:
{
// Ensure device is in inquiry database
int addr_type = 0;
int device_type = 0;
tBTA_GATT_TRANSPORT transport = BTA_GATT_TRANSPORT_LE;
if (btif_get_address_type(p_cb->bd_addr.address, &addr_type) &&
btif_get_device_type(p_cb->bd_addr.address, &device_type) &&
device_type != BT_DEVICE_TYPE_BREDR)
{
BTA_DmAddBleDevice(p_cb->bd_addr.address, addr_type, device_type);
}
// Mark background connections
if (!p_cb->is_direct)
BTA_DmBleSetBgConnType(BTM_BLE_CONN_AUTO, NULL);
switch(device_type)
{
case BT_DEVICE_TYPE_BREDR:
transport = BTA_GATT_TRANSPORT_BR_EDR;
break;
case BT_DEVICE_TYPE_BLE:
transport = BTA_GATT_TRANSPORT_LE;
break;
case BT_DEVICE_TYPE_DUMO:
if (p_cb->transport == GATT_TRANSPORT_LE)
transport = BTA_GATT_TRANSPORT_LE;
else
transport = BTA_GATT_TRANSPORT_BR_EDR;
break;
default:
BTIF_TRACE_ERROR (" GATT Open :Invalid device type %d",device_type);
return;
}
// Connect!
BTA_GATTS_Open(p_cb->server_if, p_cb->bd_addr.address,
p_cb->is_direct, transport);
break;
}
case BTIF_GATTS_CLOSE:
// Cancel pending foreground/background connections
BTA_GATTS_CancelOpen(p_cb->server_if, p_cb->bd_addr.address, TRUE);
BTA_GATTS_CancelOpen(p_cb->server_if, p_cb->bd_addr.address, FALSE);
// Close active connection
if (p_cb->conn_id != 0)
BTA_GATTS_Close(p_cb->conn_id);
break;
case BTIF_GATTS_CREATE_SERVICE:
{
tBTA_GATT_SRVC_ID srvc_id;
btif_to_bta_srvc_id(&srvc_id, &p_cb->srvc_id);
BTA_GATTS_CreateService(p_cb->server_if, &srvc_id.id.uuid,
srvc_id.id.inst_id, p_cb->num_handles,
srvc_id.is_primary);
break;
}
case BTIF_GATTS_ADD_INCLUDED_SERVICE:
BTA_GATTS_AddIncludeService(p_cb->srvc_handle, p_cb->incl_handle);
break;
case BTIF_GATTS_ADD_CHARACTERISTIC:
{
tBT_UUID uuid;
btif_to_bta_uuid(&uuid, &p_cb->uuid);
BTA_GATTS_AddCharacteristic(p_cb->srvc_handle, &uuid,
p_cb->permissions, p_cb->properties);
break;
}
case BTIF_GATTS_ADD_DESCRIPTOR:
{
tBT_UUID uuid;
btif_to_bta_uuid(&uuid, &p_cb->uuid);
BTA_GATTS_AddCharDescriptor(p_cb->srvc_handle, p_cb->permissions,
&uuid);
break;
}
case BTIF_GATTS_START_SERVICE:
BTA_GATTS_StartService(p_cb->srvc_handle, p_cb->transport);
break;
case BTIF_GATTS_STOP_SERVICE:
BTA_GATTS_StopService(p_cb->srvc_handle);
break;
case BTIF_GATTS_DELETE_SERVICE:
BTA_GATTS_DeleteService(p_cb->srvc_handle);
break;
case BTIF_GATTS_SEND_INDICATION:
BTA_GATTS_HandleValueIndication(p_cb->conn_id, p_cb->attr_handle,
p_cb->len, p_cb->value, p_cb->confirm);
// TODO: Might need to send an ACK if handle value indication is
// invoked without need for confirmation.
break;
case BTIF_GATTS_SEND_RESPONSE:
{
tBTA_GATTS_RSP rsp_struct;
btgatt_response_t *p_rsp = &p_cb->response;
btif_to_bta_response(&rsp_struct, p_rsp);
BTA_GATTS_SendRsp(p_cb->conn_id, p_cb->trans_id,
p_cb->status, &rsp_struct);
HAL_CBACK(bt_gatt_callbacks, server->response_confirmation_cb,
0, rsp_struct.attr_value.handle);
break;
}
default:
LOG_ERROR("%s: Unknown event (%d)!", __FUNCTION__, event);
break;
}
}
/************************************************************************************
** Server API Functions
************************************************************************************/
static bt_status_t btif_gatts_register_app(bt_uuid_t *uuid)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
memcpy(&btif_cb.uuid, uuid, sizeof(bt_uuid_t));
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_REGISTER_APP,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_unregister_app( int server_if )
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_UNREGISTER_APP,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_open( int server_if, const bt_bdaddr_t *bd_addr,
bool is_direct, int transport )
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.is_direct = is_direct ? 1 : 0;
btif_cb.transport = (btgatt_transport_t)transport;
bdcpy(btif_cb.bd_addr.address, bd_addr->address);
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_OPEN,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_close(int server_if, const bt_bdaddr_t *bd_addr, int conn_id)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.conn_id = (uint16_t) conn_id;
bdcpy(btif_cb.bd_addr.address, bd_addr->address);
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_CLOSE,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_add_service(int server_if, btgatt_srvc_id_t *srvc_id,
int num_handles)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.num_handles = (uint8_t) num_handles;
memcpy(&btif_cb.srvc_id, srvc_id, sizeof(btgatt_srvc_id_t));
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_CREATE_SERVICE,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_add_included_service(int server_if, int service_handle,
int included_handle)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.srvc_handle = (uint16_t) service_handle;
btif_cb.incl_handle = (uint16_t) included_handle;
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_ADD_INCLUDED_SERVICE,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_add_characteristic(int server_if, int service_handle,
bt_uuid_t *uuid, int properties,
int permissions)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.srvc_handle = (uint16_t) service_handle;
btif_cb.properties = (uint8_t) properties;
btif_cb.permissions = (uint16_t) permissions;
memcpy(&btif_cb.uuid, uuid, sizeof(bt_uuid_t));
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_ADD_CHARACTERISTIC,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_add_descriptor(int server_if, int service_handle, bt_uuid_t *uuid,
int permissions)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.srvc_handle = (uint16_t) service_handle;
btif_cb.permissions = (uint16_t) permissions;
memcpy(&btif_cb.uuid, uuid, sizeof(bt_uuid_t));
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_ADD_DESCRIPTOR,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_start_service(int server_if, int service_handle, int transport)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.srvc_handle = (uint16_t) service_handle;
btif_cb.transport = (uint8_t) transport;
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_START_SERVICE,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_stop_service(int server_if, int service_handle)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.srvc_handle = (uint16_t) service_handle;
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_STOP_SERVICE,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_delete_service(int server_if, int service_handle)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.srvc_handle = (uint16_t) service_handle;
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_DELETE_SERVICE,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_send_indication(int server_if, int attribute_handle, int conn_id,
int len, int confirm, char* p_value)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.server_if = (uint8_t) server_if;
btif_cb.conn_id = (uint16_t) conn_id;
btif_cb.attr_handle = attribute_handle;
btif_cb.confirm = confirm;
btif_cb.len = len;
memcpy(btif_cb.value, p_value, len > BTGATT_MAX_ATTR_LEN ? BTGATT_MAX_ATTR_LEN : len);
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_SEND_INDICATION,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
static bt_status_t btif_gatts_send_response(int conn_id, int trans_id,
int status, btgatt_response_t *response)
{
CHECK_BTGATT_INIT();
btif_gatts_cb_t btif_cb;
btif_cb.conn_id = (uint16_t) conn_id;
btif_cb.trans_id = (uint32_t) trans_id;
btif_cb.status = (uint8_t) status;
memcpy(&btif_cb.response, response, sizeof(btgatt_response_t));
return btif_transfer_context(btgatts_handle_event, BTIF_GATTS_SEND_RESPONSE,
(char*) &btif_cb, sizeof(btif_gatts_cb_t), NULL);
}
const btgatt_server_interface_t btgattServerInterface = {
btif_gatts_register_app,
btif_gatts_unregister_app,
btif_gatts_open,
btif_gatts_close,
btif_gatts_add_service,
btif_gatts_add_included_service,
btif_gatts_add_characteristic,
btif_gatts_add_descriptor,
btif_gatts_start_service,
btif_gatts_stop_service,
btif_gatts_delete_service,
btif_gatts_send_indication,
btif_gatts_send_response
};
#endif