/******************************************************************************
*
* Copyright (C) 2008-2012 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.
*
******************************************************************************/
/******************************************************************************
*
* this file contains the main GATT server attributes access request
* handling functions.
*
******************************************************************************/
#include "bt_target.h"
#include "gatt_api.h"
#include "gatt_int.h"
#if BLE_INCLUDED == TRUE
#define GATTP_MAX_NUM_INC_SVR 0
#define GATTP_MAX_CHAR_NUM 2
#define GATTP_MAX_ATTR_NUM (GATTP_MAX_CHAR_NUM * 2 + GATTP_MAX_NUM_INC_SVR + 1)
#define GATTP_MAX_CHAR_VALUE_SIZE 50
#ifndef GATTP_ATTR_DB_SIZE
#define GATTP_ATTR_DB_SIZE GATT_DB_MEM_SIZE(GATTP_MAX_NUM_INC_SVR, GATTP_MAX_CHAR_NUM, GATTP_MAX_CHAR_VALUE_SIZE)
#endif
static void gatt_profile_request_cback (UINT16 conn_id, UINT32 trans_id, UINT8 op_code, tGATTS_DATA *p_data);
static void gatt_profile_connect_cback (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id, BOOLEAN connected, tGATT_DISCONN_REASON reason);
static tGATT_CBACK gatt_profile_cback =
{
gatt_profile_connect_cback,
NULL,
NULL,
NULL,
gatt_profile_request_cback,
NULL
} ;
/*******************************************************************************
**
** Function gatt_profile_find_conn_id_by_bd_addr
**
** Description The function searches all LCB with macthing bd address
**
** Returns total number of clcb found.
**
*******************************************************************************/
UINT16 gatt_profile_find_conn_id_by_bd_addr(BD_ADDR bda)
{
UINT8 i_clcb;
tGATT_PROFILE_CLCB *p_clcb = NULL;
for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
{
if (p_clcb->in_use && p_clcb->connected && !memcmp(p_clcb->bda, bda, BD_ADDR_LEN))
{
return p_clcb->conn_id;
}
}
return GATT_INVALID_CONN_ID;
}
/*******************************************************************************
**
** Function gatt_profile_find_clcb_by_bd_addr
**
** Description The function searches all LCBs with macthing bd address.
**
** Returns Pointer to the found link conenction control block.
**
*******************************************************************************/
tGATT_PROFILE_CLCB *gatt_profile_find_clcb_by_bd_addr(BD_ADDR bda)
{
UINT8 i_clcb;
tGATT_PROFILE_CLCB *p_clcb = NULL;
for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
{
if (p_clcb->in_use && p_clcb->connected && !memcmp(p_clcb->bda, bda, BD_ADDR_LEN))
{
return p_clcb;
}
}
return p_clcb;
}
/*******************************************************************************
**
** Function gatt_profile_clcb_alloc
**
** Description The function allocates a GATT profile connection link control block
**
** Returns NULL if not found. Otherwise pointer to the connection link block.
**
*******************************************************************************/
tGATT_PROFILE_CLCB *gatt_profile_clcb_alloc (UINT16 conn_id, BD_ADDR bda)
{
UINT8 i_clcb = 0;
tGATT_PROFILE_CLCB *p_clcb = NULL;
for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
{
if (!p_clcb->in_use)
{
p_clcb->in_use = TRUE;
p_clcb->conn_id = conn_id;
p_clcb->connected = TRUE;
memcpy (p_clcb->bda, bda, BD_ADDR_LEN);
break;
}
}
return p_clcb;
}
/*******************************************************************************
**
** Function gatt_profile_clcb_dealloc
**
** Description The function deallocates a GATT profile connection link control block
**
** Returns NTrue the deallocation is successful
**
*******************************************************************************/
BOOLEAN gatt_profile_clcb_dealloc (UINT16 conn_id)
{
UINT8 i_clcb = 0;
tGATT_PROFILE_CLCB *p_clcb = NULL;
for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
{
if (p_clcb->in_use && p_clcb->connected && (p_clcb->conn_id == conn_id))
{
memset(p_clcb, 0, sizeof(tGATT_PROFILE_CLCB));
return TRUE;
}
}
return FALSE;
}
/*******************************************************************************
**
** Function gatt_profile_request_cback
**
** Description GATT profile attribute access request callback.
**
** Returns void.
**
*******************************************************************************/
static void gatt_profile_request_cback (UINT16 conn_id, UINT32 trans_id, tGATTS_REQ_TYPE type,
tGATTS_DATA *p_data)
{
UINT8 status = GATT_INVALID_PDU;
tGATTS_RSP rsp_msg ;
BOOLEAN ignore = FALSE;
memset(&rsp_msg, 0, sizeof(tGATTS_RSP));
switch (type)
{
case GATTS_REQ_TYPE_READ:
status = GATT_READ_NOT_PERMIT;
break;
case GATTS_REQ_TYPE_WRITE:
status = GATT_WRITE_NOT_PERMIT;
break;
case GATTS_REQ_TYPE_WRITE_EXEC:
case GATT_CMD_WRITE:
ignore = TRUE;
GATT_TRACE_EVENT0("Ignore GATT_REQ_EXEC_WRITE/WRITE_CMD" );
break;
case GATTS_REQ_TYPE_MTU:
GATT_TRACE_EVENT1("Get MTU exchange new mtu size: %d", p_data->mtu);
ignore = TRUE;
break;
default:
GATT_TRACE_EVENT1("Unknown/unexpected LE GAP ATT request: 0x%02x", type);
break;
}
if (!ignore)
GATTS_SendRsp (conn_id, trans_id, status, &rsp_msg);
}
/*******************************************************************************
**
** Function gatt_profile_connect_cback
**
** Description Gatt profile connection callback.
**
** Returns void
**
*******************************************************************************/
static void gatt_profile_connect_cback (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id,
BOOLEAN connected, tGATT_DISCONN_REASON reason)
{
GATT_TRACE_EVENT5 ("gatt_profile_connect_cback: from %08x%04x connected:%d conn_id=%d reason = 0x%04x",
(bda[0]<<24)+(bda[1]<<16)+(bda[2]<<8)+bda[3],
(bda[4]<<8)+bda[5], connected, conn_id, reason);
if (connected)
{
if (gatt_profile_clcb_alloc(conn_id, bda) == NULL)
{
GATT_TRACE_ERROR0 ("gatt_profile_connect_cback: no_resource");
return;
}
}
else
{
gatt_profile_clcb_dealloc(conn_id);
}
}
/*******************************************************************************
**
** Function gatt_profile_db_init
**
** Description Initializa the GATT profile attribute database.
**
*******************************************************************************/
void gatt_profile_db_init (void)
{
tBT_UUID app_uuid = {LEN_UUID_128, {0}};
tBT_UUID uuid = {LEN_UUID_16, {UUID_SERVCLASS_GATT_SERVER}};
UINT16 service_handle = 0;
tGATT_STATUS status;
/* Fill our internal UUID with a fixed pattern 0x81 */
memset (&app_uuid.uu.uuid128, 0x81, LEN_UUID_128);
/* Create a GATT profile service */
gatt_cb.gatt_if = GATT_Register(&app_uuid, &gatt_profile_cback);
GATT_StartIf(gatt_cb.gatt_if);
service_handle = GATTS_CreateService (gatt_cb.gatt_if , &uuid, 0, GATTP_MAX_ATTR_NUM, TRUE);
/* add Service Changed characteristic
*/
uuid.uu.uuid16 = gatt_cb.gattp_attr.uuid = GATT_UUID_GATT_SRV_CHGD;
gatt_cb.gattp_attr.service_change = 0;
gatt_cb.gattp_attr.handle =
gatt_cb.handle_of_h_r = GATTS_AddCharacteristic(service_handle, &uuid, 0, GATT_CHAR_PROP_BIT_INDICATE);
GATT_TRACE_DEBUG1 ("gatt_profile_db_init: handle of service changed%d",
gatt_cb.handle_of_h_r );
/* start service
*/
status = GATTS_StartService (gatt_cb.gatt_if, service_handle, GATTP_TRANSPORT_SUPPORTED );
GATT_TRACE_DEBUG2 ("gatt_profile_db_init: gatt_if=%d start status%d",
gatt_cb.gatt_if, status);
}
#endif /* BLE_INCLUDED */