/******************************************************************************
*
* Copyright (C) 2003-2012 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 GATT client discovery procedures and cache
* related functions.
*
******************************************************************************/
#include "bt_target.h"
#if defined(BTA_GATT_INCLUDED) && (BTA_GATT_INCLUDED == TRUE)
#include <string.h>
#include "utl.h"
#include "gki.h"
#include "bta_sys.h"
#include "sdp_api.h"
#include "sdpdefs.h"
#include "bta_gattc_int.h"
#include "btm_api.h"
#include "btm_ble_api.h"
static void bta_gattc_char_dscpt_disc_cmpl(UINT16 conn_id, tBTA_GATTC_SERV *p_srvc_cb);
static tBTA_GATT_STATUS bta_gattc_sdp_service_disc(UINT16 conn_id, tBTA_GATTC_SERV *p_server_cb);
#define BTA_GATT_SDP_DB_SIZE 4096
/*****************************************************************************
** Constants
*****************************************************************************/
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
static char *bta_gattc_attr_type[] =
{
"I", /* Included Service */
"C", /* Characteristic */
"D" /* Characteristic Descriptor */
};
/* utility functions */
/*******************************************************************************
**
** Function bta_gattc_display_cache_server
**
** Description debug function to display the server cache.
**
** Returns none.
**
*******************************************************************************/
static void bta_gattc_display_cache_server(tBTA_GATTC_CACHE *p_cache)
{
UINT8 i = 0, j;
tBTA_GATTC_CACHE *p_cur_srvc = p_cache;
tBTA_GATTC_CACHE_ATTR *p_attr;
APPL_TRACE_ERROR("<================Start Server Cache =============>");
while (p_cur_srvc)
{
APPL_TRACE_ERROR("Service[%d]: handle[%d ~ %d] %s[0x%04x] inst[%d]",
i, p_cur_srvc->s_handle, p_cur_srvc->e_handle,
((p_cur_srvc->service_uuid.id.uuid.len == 2) ? "uuid16" : "uuid128"),
p_cur_srvc->service_uuid.id.uuid.uu.uuid16,
p_cur_srvc->service_uuid.id.inst_id);
i ++;
p_attr = p_cur_srvc->p_attr;
for (j = 0; p_attr; j ++ )
{
APPL_TRACE_ERROR("\t Attr[0x%04x] handle[%d] uuid[0x%04x] inst[%d] type[%s] prop[0x%1x]",
j + 1, p_attr->attr_handle, p_attr->p_uuid->uuid16, p_attr->inst_id,
bta_gattc_attr_type[p_attr->attr_type], p_attr->property);
p_attr = p_attr->p_next;
}
p_cur_srvc = p_cur_srvc->p_next;
}
APPL_TRACE_ERROR("<================End Server Cache =============>");
APPL_TRACE_ERROR(" ");
}
/*******************************************************************************
**
** Function bta_gattc_display_explore_record
**
** Description debug function to display the exploration list
**
** Returns none.
**
*******************************************************************************/
static void bta_gattc_display_explore_record(tBTA_GATTC_ATTR_REC *p_rec, UINT8 num_rec)
{
UINT8 i;
tBTA_GATTC_ATTR_REC *pp = p_rec;
APPL_TRACE_ERROR("<================Start Explore Queue =============>");
for (i = 0; i < num_rec; i ++, pp ++)
{
APPL_TRACE_ERROR("\t rec[%d] uuid[0x%04x] s_handle[%d] e_handle[%d] is_primary[%d]",
i + 1, pp->uuid.uu.uuid16, pp->s_handle, pp->e_handle, pp->is_primary);
}
APPL_TRACE_ERROR("<================ End Explore Queue =============>");
APPL_TRACE_ERROR(" ");
}
#endif /* BTA_GATT_DEBUG == TRUE */
/*******************************************************************************
**
** Function bta_gattc_alloc_cache_buf
**
** Description Allocate a GKI buffer for database cache.
**
** Returns status
**
*******************************************************************************/
BT_HDR *bta_gattc_alloc_cache_buf(tBTA_GATTC_SERV *p_srvc_cb)
{
BT_HDR *p_buf;
if ((p_buf = (BT_HDR *)GKI_getpoolbuf(GATT_DB_POOL_ID)) == NULL)
{
APPL_TRACE_DEBUG("No resources: GKI buffer allocation failed.");
utl_freebuf((void **)&p_srvc_cb->p_srvc_list);
p_srvc_cb->free_byte = 0;
}
else
{
memset(p_buf, 0, GKI_get_buf_size(p_buf));
p_srvc_cb->p_free = (UINT8 *) p_buf;
p_srvc_cb->free_byte = GKI_get_buf_size(p_buf);
/* link into buffer queue */
GKI_enqueue(&p_srvc_cb->cache_buffer, p_buf);
}
#if BTA_GATT_DEBUG== TRUE
APPL_TRACE_DEBUG("allocating new buffer: free byte = %d", p_srvc_cb->free_byte);
#endif
return p_buf;
}
/*******************************************************************************
**
** Function bta_gattc_init_cache
**
** Description Initialize the database cache and discovery related resources.
**
** Returns status
**
*******************************************************************************/
tBTA_GATT_STATUS bta_gattc_init_cache(tBTA_GATTC_SERV *p_srvc_cb)
{
tBTA_GATT_STATUS status = BTA_GATT_OK;
while (p_srvc_cb->cache_buffer.p_first)
GKI_freebuf (GKI_dequeue (&p_srvc_cb->cache_buffer));
utl_freebuf((void **)&p_srvc_cb->p_srvc_list);
if ((p_srvc_cb->p_srvc_list = (tBTA_GATTC_ATTR_REC*)GKI_getbuf(BTA_GATTC_ATTR_LIST_SIZE)) == NULL)
{
APPL_TRACE_DEBUG("No resources: GKI buffer allocation failed.");
status = GATT_NO_RESOURCES;
}
else
{
p_srvc_cb->total_srvc = 0;
p_srvc_cb->cur_srvc_idx =
p_srvc_cb->cur_char_idx =
p_srvc_cb->next_avail_idx = 0;
if (bta_gattc_alloc_cache_buf(p_srvc_cb) == NULL)
{
status = GATT_NO_RESOURCES;
}
else
{
p_srvc_cb->p_cur_srvc = p_srvc_cb->p_srvc_cache = NULL;
}
}
return status;
}
/*******************************************************************************
**
** Function bta_gattc_get_srvc_inst_id
**
** Description get service instance number
**
** Returns instance ID of the service.
**
*******************************************************************************/
static UINT8 bta_gattc_get_srvc_inst_id(tBTA_GATTC_SERV *p_srvc_cb, tBT_UUID uuid)
{
UINT8 i = 0, inst = 0;
tBTA_GATTC_ATTR_REC *p_srvc_rec;
for (i = 0; i < p_srvc_cb->total_srvc; i ++)
/*
for (; i < p_srvc_cb->cur_srvc_idx; i ++)*/
{
p_srvc_rec = p_srvc_cb->p_srvc_list + i;
if (bta_gattc_uuid_compare(&p_srvc_rec->uuid, &uuid, TRUE))
inst ++;
}
return inst ;
}
/*******************************************************************************
**
** Function bta_gattc_get_char_inst_id
**
** Description get characteristic instance number
**
** Returns characteristic instance ID.
**
*******************************************************************************/
static UINT8 bta_gattc_get_char_inst_id(tBTA_GATTC_CACHE *p_service_cache, tBT_UUID *p_uuid)
{
UINT8 inst = 0;
tBTA_GATTC_CACHE_ATTR *p_attr;
tBT_UUID attr_uuid;
p_attr = p_service_cache->p_attr;
while (p_attr)
{
bta_gattc_pack_attr_uuid(p_attr, &attr_uuid);
if (bta_gattc_uuid_compare(&attr_uuid, p_uuid, TRUE))
inst ++;
p_attr = p_attr->p_next;
}
return inst ;
}
/*******************************************************************************
**
** Function bta_gattc_get_char_descr_inst_id
**
** Description get characteristic descriptor instance number
**
** Returns characteristic instance ID.
**
*******************************************************************************/
static UINT8 bta_gattc_get_char_descr_inst_id(tBTA_GATTC_CACHE_ATTR *p_char_attr, tBT_UUID *p_uuid)
{
UINT8 inst = 0;
tBT_UUID attr_uuid;
if (p_char_attr != NULL)
p_char_attr = p_char_attr->p_next;
while (p_char_attr)
{
bta_gattc_pack_attr_uuid(p_char_attr, &attr_uuid);
if (bta_gattc_uuid_compare(&attr_uuid, p_uuid, TRUE))
inst ++;
p_char_attr = p_char_attr->p_next;
}
return inst ;
}
/*******************************************************************************
**
** Function bta_gattc_add_srvc_to_cache
**
** Description Add a service into database cache.
**
** Returns status
**
*******************************************************************************/
static tBTA_GATT_STATUS bta_gattc_add_srvc_to_cache(tBTA_GATTC_SERV *p_srvc_cb,
UINT16 s_handle, UINT16 e_handle,
tBT_UUID *p_uuid,
BOOLEAN is_primary, UINT8 srvc_inst)
{
tBTA_GATTC_CACHE *p_new_srvc = NULL;
tBTA_GATT_STATUS status = BTA_GATT_OK;
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("Add a service into Service");
APPL_TRACE_DEBUG("free byte = %d, req %d bytes.", p_srvc_cb->free_byte, sizeof(tBTA_GATTC_CACHE))
#endif
if (p_srvc_cb->free_byte < sizeof(tBTA_GATTC_CACHE))
{
if (bta_gattc_alloc_cache_buf(p_srvc_cb) == NULL)
return GATT_NO_RESOURCES;
}
p_new_srvc = (tBTA_GATTC_CACHE *)p_srvc_cb->p_free;
/* update service information */
p_new_srvc->s_handle = s_handle;
p_new_srvc->e_handle = e_handle;
p_new_srvc->service_uuid.is_primary = is_primary;
memcpy(&p_new_srvc->service_uuid.id.uuid, p_uuid, sizeof(tBT_UUID));
p_new_srvc->service_uuid.id.inst_id = srvc_inst;
p_new_srvc->p_next = NULL;
if (p_srvc_cb->p_cur_srvc != NULL)
p_srvc_cb->p_cur_srvc->p_next = p_new_srvc;
p_srvc_cb->p_cur_srvc = p_new_srvc;
p_srvc_cb->p_cur_srvc->p_cur_char = NULL;
/* first service */
if (p_srvc_cb->p_srvc_cache == NULL)
p_srvc_cb->p_srvc_cache = p_new_srvc;
/* update buffer managament info */
p_srvc_cb->p_free += sizeof(tBTA_GATTC_CACHE);
p_srvc_cb->free_byte -= sizeof(tBTA_GATTC_CACHE);
return status;
}
/*******************************************************************************
**
** Function bta_gattc_add_attr_to_cache
**
** Description Add an attribute into database cache buffer.
**
** Returns status
**
*******************************************************************************/
static tBTA_GATT_STATUS bta_gattc_add_attr_to_cache(tBTA_GATTC_SERV *p_srvc_cb,
UINT16 handle,
tBT_UUID *p_uuid,
UINT8 property,
tBTA_GATTC_ATTR_TYPE type)
{
tBTA_GATTC_CACHE_ATTR *p_attr;
tBTA_GATT_STATUS status = BTA_GATT_OK;
UINT16 len = sizeof(tBTA_GATTC_CACHE_ATTR) + p_uuid->len;
UINT8 *pp;
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("bta_gattc_add_attr_to_cache: Add a [%s] into Service", bta_gattc_attr_type[type]);
APPL_TRACE_DEBUG("handle=%d uuid16=0x%x property=0x%x type=%d", handle, p_uuid->uu.uuid16, property, type);
APPL_TRACE_DEBUG("free byte = %d, req %d bytes.", p_srvc_cb->free_byte, len);
#endif
if (p_srvc_cb->p_cur_srvc == NULL)
{
APPL_TRACE_ERROR("Illegal action to add char/descr/incl srvc before adding a service!");
return GATT_WRONG_STATE;
}
if (p_srvc_cb->free_byte < len)
{
if (bta_gattc_alloc_cache_buf(p_srvc_cb) == NULL)
return GATT_NO_RESOURCES;
}
p_attr = (tBTA_GATTC_CACHE_ATTR *)p_srvc_cb->p_free;
p_attr->attr_handle = handle;
p_attr->attr_type = type;
p_attr->property = property;
p_attr->uuid_len = p_uuid->len;
p_attr->p_uuid = (tBTA_GATTC_UUID *)(p_attr + 1);
p_attr->p_next = NULL;
pp = (UINT8 *)p_attr->p_uuid;
if (p_uuid->len == LEN_UUID_16)
{
UINT16_TO_STREAM(pp, p_uuid->uu.uuid16);
}
else if (p_uuid->len == LEN_UUID_128)
{
memcpy(pp, p_uuid->uu.uuid128, LEN_UUID_128);
}
if (type == BTA_GATTC_ATTR_TYPE_CHAR)
{
p_attr->inst_id = bta_gattc_get_char_inst_id(p_srvc_cb->p_cur_srvc, p_uuid);
p_srvc_cb->p_cur_srvc->p_cur_char = p_attr;
}
else if (type == BTA_GATTC_ATTR_TYPE_CHAR_DESCR)
p_attr->inst_id = bta_gattc_get_char_descr_inst_id(p_srvc_cb->p_cur_srvc->p_cur_char, p_uuid);
else /* TODO: --->> temp treat included service as single instance */
p_attr->inst_id = 0;
/* update service information */
p_srvc_cb->p_free += len;
p_srvc_cb->free_byte -= len;
/* first attribute within the service, update the attribute pointer */
if (p_srvc_cb->p_cur_srvc->p_attr == NULL)
{
p_srvc_cb->p_cur_srvc->p_attr = p_attr;
}
if (p_srvc_cb->p_cur_srvc->p_last_attr != NULL)
p_srvc_cb->p_cur_srvc->p_last_attr->p_next = p_attr;
p_srvc_cb->p_cur_srvc->p_last_attr = p_attr;
return status;
}
/*******************************************************************************
**
** Function bta_gattc_get_disc_range
**
** Description get discovery stating and ending handle range.
**
** Returns None.
**
*******************************************************************************/
void bta_gattc_get_disc_range(tBTA_GATTC_SERV *p_srvc_cb, UINT16 *p_s_hdl, UINT16 *p_e_hdl, BOOLEAN is_srvc)
{
tBTA_GATTC_ATTR_REC *p_rec = NULL;
if (is_srvc)
{
p_rec = p_srvc_cb->p_srvc_list + p_srvc_cb->cur_srvc_idx;
*p_s_hdl = p_rec->s_handle;
}
else
{
p_rec = p_srvc_cb->p_srvc_list + p_srvc_cb->cur_char_idx;
*p_s_hdl = p_rec->s_handle + 1;
}
*p_e_hdl = p_rec->e_handle;
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("discover range [%d ~ %d]",p_rec->s_handle, p_rec->e_handle);
#endif
return;
}
/*******************************************************************************
**
** Function bta_gattc_discover_pri_service
**
** Description Start primary service discovery
**
** Returns status of the operation.
**
*******************************************************************************/
tBTA_GATT_STATUS bta_gattc_discover_pri_service(UINT16 conn_id, tBTA_GATTC_SERV *p_server_cb,
UINT8 disc_type)
{
tBTA_GATTC_CLCB *p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
tBTA_GATT_STATUS status = BTA_GATT_ERROR;
if (p_clcb)
{
if (p_clcb->transport == BTA_TRANSPORT_LE)
status = bta_gattc_discover_procedure(conn_id, p_server_cb, disc_type);
else
status = bta_gattc_sdp_service_disc(conn_id, p_server_cb);
}
return status;
}
/*******************************************************************************
**
** Function bta_gattc_discover_procedure
**
** Description Start a particular type of discovery procedure on server.
**
** Returns status of the operation.
**
*******************************************************************************/
tBTA_GATT_STATUS bta_gattc_discover_procedure(UINT16 conn_id, tBTA_GATTC_SERV *p_server_cb,
UINT8 disc_type)
{
tGATT_DISC_PARAM param;
BOOLEAN is_service = TRUE;
memset(¶m, 0, sizeof(tGATT_DISC_PARAM));
if (disc_type == GATT_DISC_SRVC_ALL || disc_type == GATT_DISC_SRVC_BY_UUID)
{
param.s_handle = 1;
param.e_handle = 0xFFFF;
}
else
{
if (disc_type == GATT_DISC_CHAR_DSCPT)
is_service = FALSE;
bta_gattc_get_disc_range(p_server_cb, ¶m.s_handle, ¶m.e_handle, is_service);
if (param.s_handle > param.e_handle)
{
return GATT_ERROR;
}
}
return GATTC_Discover (conn_id, disc_type, ¶m);
}
/*******************************************************************************
**
** Function bta_gattc_start_disc_include_srvc
**
** Description Start discovery for included service
**
** Returns status of the operation.
**
*******************************************************************************/
tBTA_GATT_STATUS bta_gattc_start_disc_include_srvc(UINT16 conn_id, tBTA_GATTC_SERV *p_srvc_cb)
{
return bta_gattc_discover_procedure(conn_id, p_srvc_cb, GATT_DISC_INC_SRVC);
}
/*******************************************************************************
**
** Function bta_gattc_start_disc_char
**
** Description Start discovery for characteristic
**
** Returns status of the operation.
**
*******************************************************************************/
tBTA_GATT_STATUS bta_gattc_start_disc_char(UINT16 conn_id, tBTA_GATTC_SERV *p_srvc_cb)
{
p_srvc_cb->total_char = 0;
return bta_gattc_discover_procedure(conn_id, p_srvc_cb, GATT_DISC_CHAR);
}
/*******************************************************************************
**
** Function bta_gattc_start_disc_char_dscp
**
** Description Start discovery for characteristic descriptor
**
** Returns none.
**
*******************************************************************************/
void bta_gattc_start_disc_char_dscp(UINT16 conn_id, tBTA_GATTC_SERV *p_srvc_cb)
{
APPL_TRACE_DEBUG("starting discover characteristics descriptor");
if (bta_gattc_discover_procedure(conn_id, p_srvc_cb, GATT_DISC_CHAR_DSCPT) != 0)
bta_gattc_char_dscpt_disc_cmpl(conn_id, p_srvc_cb);
}
/*******************************************************************************
**
** Function bta_gattc_explore_srvc
**
** Description process the service discovery complete event
**
** Returns status
**
*******************************************************************************/
static void bta_gattc_explore_srvc(UINT16 conn_id, tBTA_GATTC_SERV *p_srvc_cb)
{
tBTA_GATTC_ATTR_REC *p_rec = p_srvc_cb->p_srvc_list + p_srvc_cb->cur_srvc_idx;
tBTA_GATTC_CLCB *p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
APPL_TRACE_DEBUG("Start service discovery: srvc_idx = %d", p_srvc_cb->cur_srvc_idx);
p_srvc_cb->cur_char_idx = p_srvc_cb->next_avail_idx = p_srvc_cb->total_srvc;
if (p_clcb == NULL)
{
APPL_TRACE_ERROR("unknown connection ID");
return;
}
/* start expore a service if there is service not been explored */
if (p_srvc_cb->cur_srvc_idx < p_srvc_cb->total_srvc)
{
/* add the first service into cache */
if (bta_gattc_add_srvc_to_cache (p_srvc_cb,
p_rec->s_handle,
p_rec->e_handle,
&p_rec->uuid,
p_rec->is_primary,
p_rec->srvc_inst_id) == 0)
{
/* start discovering included services */
bta_gattc_start_disc_include_srvc(conn_id, p_srvc_cb);
return;
}
}
/* no service found at all, the end of server discovery*/
APPL_TRACE_ERROR("No More Service found");
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
bta_gattc_display_cache_server(p_srvc_cb->p_srvc_cache);
#endif
/* save cache to NV */
p_clcb->p_srcb->state = BTA_GATTC_SERV_SAVE;
bta_gattc_co_cache_open(p_srvc_cb->server_bda, BTA_GATTC_CI_CACHE_OPEN_EVT,
conn_id, TRUE);
}
/*******************************************************************************
**
** Function bta_gattc_incl_srvc_disc_cmpl
**
** Description process the relationship discovery complete event
**
** Returns status
**
*******************************************************************************/
static void bta_gattc_incl_srvc_disc_cmpl(UINT16 conn_id, tBTA_GATTC_SERV *p_srvc_cb)
{
p_srvc_cb->cur_char_idx = p_srvc_cb->total_srvc;
/* start discoverying characteristic */
bta_gattc_start_disc_char(conn_id, p_srvc_cb);
}
/*******************************************************************************
**
** Function bta_gattc_char_disc_cmpl
**
** Description process the characteristic discovery complete event
**
** Returns status
**
*******************************************************************************/
static void bta_gattc_char_disc_cmpl(UINT16 conn_id, tBTA_GATTC_SERV *p_srvc_cb)
{
tBTA_GATTC_ATTR_REC *p_rec = p_srvc_cb->p_srvc_list + p_srvc_cb->cur_char_idx;
/* if there are characteristic needs to be explored */
if (p_srvc_cb->total_char > 0)
{
/* add the first characteristic into cache */
bta_gattc_add_attr_to_cache (p_srvc_cb,
p_rec->s_handle,
&p_rec->uuid,
p_rec->property,
BTA_GATTC_ATTR_TYPE_CHAR);
/* start discoverying characteristic descriptor , if failed, disc for next char*/
bta_gattc_start_disc_char_dscp(conn_id, p_srvc_cb);
}
else /* otherwise start with next service */
{
p_srvc_cb->cur_srvc_idx ++;
bta_gattc_explore_srvc (conn_id, p_srvc_cb);
}
}
/*******************************************************************************
**
** Function bta_gattc_char_dscpt_disc_cmpl
**
** Description process the char descriptor discovery complete event
**
** Returns status
**
*******************************************************************************/
static void bta_gattc_char_dscpt_disc_cmpl(UINT16 conn_id, tBTA_GATTC_SERV *p_srvc_cb)
{
tBTA_GATTC_ATTR_REC *p_rec = NULL;
if (-- p_srvc_cb->total_char > 0)
{
p_rec = p_srvc_cb->p_srvc_list + (++ p_srvc_cb->cur_char_idx);
/* add the next characteristic into cache */
bta_gattc_add_attr_to_cache (p_srvc_cb,
p_rec->s_handle,
&p_rec->uuid,
p_rec->property,
BTA_GATTC_ATTR_TYPE_CHAR);
/* start discoverying next characteristic for char descriptor */
bta_gattc_start_disc_char_dscp(conn_id, p_srvc_cb);
}
else
/* all characteristic has been explored, start with next service if any */
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_ERROR("all char has been explored");
#endif
p_srvc_cb->cur_srvc_idx ++;
bta_gattc_explore_srvc (conn_id, p_srvc_cb);
}
}
static BOOLEAN bta_gattc_srvc_in_list(tBTA_GATTC_SERV *p_srvc_cb, UINT16 s_handle,
UINT16 e_handle, tBT_UUID uuid)
{
tBTA_GATTC_ATTR_REC *p_rec = NULL;
UINT8 i;
BOOLEAN exist_srvc = FALSE;
UNUSED(uuid);
if (!GATT_HANDLE_IS_VALID(s_handle) || !GATT_HANDLE_IS_VALID(e_handle))
{
APPL_TRACE_ERROR("invalid included service handle: [0x%04x ~ 0x%04x]", s_handle, e_handle);
exist_srvc = TRUE;
}
else
{
for (i = 0; i < p_srvc_cb->next_avail_idx; i ++)
{
p_rec = p_srvc_cb->p_srvc_list + i;
/* a new service should not have any overlap with other service handle range */
if (p_rec->s_handle == s_handle || p_rec->e_handle == e_handle)
{
exist_srvc = TRUE;
break;
}
}
}
return exist_srvc;
}
/*******************************************************************************
**
** Function bta_gattc_add_srvc_to_list
**
** Description Add a service into explore pending list
**
** Returns status
**
*******************************************************************************/
static tBTA_GATT_STATUS bta_gattc_add_srvc_to_list(tBTA_GATTC_SERV *p_srvc_cb,
UINT16 s_handle, UINT16 e_handle,
tBT_UUID uuid, BOOLEAN is_primary)
{
tBTA_GATTC_ATTR_REC *p_rec = NULL;
tBTA_GATT_STATUS status = BTA_GATT_OK;
if (p_srvc_cb->p_srvc_list && p_srvc_cb->next_avail_idx < BTA_GATTC_MAX_CACHE_CHAR)
{
p_rec = p_srvc_cb->p_srvc_list + p_srvc_cb->next_avail_idx;
p_srvc_cb->total_srvc ++;
APPL_TRACE_DEBUG("bta_gattc_add_srvc_to_list handle = %d, service type = 0x%04x",
s_handle, uuid.uu.uuid16);
p_rec->s_handle = s_handle;
p_rec->e_handle = e_handle;
p_rec->is_primary = is_primary;
p_rec->srvc_inst_id = bta_gattc_get_srvc_inst_id(p_srvc_cb, uuid);
memcpy(&p_rec->uuid, &uuid, sizeof(tBT_UUID));
p_srvc_cb->next_avail_idx ++;
}
else
{ /* allocate bigger buffer ?? */
status = GATT_DB_FULL;
APPL_TRACE_ERROR("service not added, no resources or wrong state");
}
return status;
}
/*******************************************************************************
**
** Function bta_gattc_add_char_to_list
**
** Description Add a characteristic into explore pending list
**
** Returns status
**
*******************************************************************************/
static tBTA_GATT_STATUS bta_gattc_add_char_to_list(tBTA_GATTC_SERV *p_srvc_cb,
UINT16 decl_handle, UINT16 value_handle,
tBT_UUID uuid, UINT8 property)
{
tBTA_GATTC_ATTR_REC *p_rec = NULL;
tBTA_GATT_STATUS status = BTA_GATT_OK;
if (p_srvc_cb->p_srvc_list == NULL)
{
APPL_TRACE_ERROR("No service available, unexpected char discovery result");
status = BTA_GATT_INTERNAL_ERROR;
}
else if (p_srvc_cb->next_avail_idx < BTA_GATTC_MAX_CACHE_CHAR)
{
p_rec = p_srvc_cb->p_srvc_list + p_srvc_cb->next_avail_idx;
p_srvc_cb->total_char ++;
p_rec->s_handle = value_handle;
p_rec->property = property;
p_rec->e_handle = (p_srvc_cb->p_srvc_list + p_srvc_cb->cur_srvc_idx)->e_handle;
memcpy(&p_rec->uuid, &uuid, sizeof(tBT_UUID));
/* update the endind handle of pervious characteristic if available */
if (p_srvc_cb->total_char > 1)
{
p_rec -= 1;
p_rec->e_handle = decl_handle - 1;
}
p_srvc_cb->next_avail_idx ++;
}
else
{
APPL_TRACE_ERROR("char not added, no resources");
/* allocate bigger buffer ?? */
status = BTA_GATT_DB_FULL;
}
return status;
}
/*******************************************************************************
**
** Function bta_gattc_sdp_callback
**
** Description Process the discovery result from sdp
**
** Returns void
**
*******************************************************************************/
void bta_gattc_sdp_callback (UINT16 sdp_status)
{
tSDP_DISC_REC *p_sdp_rec = NULL;
tBT_UUID service_uuid;
tSDP_PROTOCOL_ELEM pe;
UINT16 start_handle = 0, end_handle = 0;
tBTA_GATTC_SERV *p_srvc_cb = bta_gattc_find_scb_by_cid(bta_gattc_cb.sdp_conn_id);
if(((sdp_status == SDP_SUCCESS) || (sdp_status == SDP_DB_FULL)) && p_srvc_cb != NULL)
{
do
{
/* find a service record, report it */
p_sdp_rec = SDP_FindServiceInDb(bta_gattc_cb.p_sdp_db,
0, p_sdp_rec);
if (p_sdp_rec)
{
if (SDP_FindServiceUUIDInRec(p_sdp_rec, &service_uuid))
{
if (SDP_FindProtocolListElemInRec(p_sdp_rec, UUID_PROTOCOL_ATT, &pe))
{
start_handle = (UINT16) pe.params[0];
end_handle = (UINT16) pe.params[1];
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_EVENT("Found ATT service [0x%04x] handle[0x%04x ~ 0x%04x]",
service_uuid.uu.uuid16, start_handle, end_handle);
#endif
if (GATT_HANDLE_IS_VALID(start_handle) && GATT_HANDLE_IS_VALID(end_handle)&&
p_srvc_cb != NULL)
{
/* discover services result, add services into a service list */
bta_gattc_add_srvc_to_list(p_srvc_cb,
start_handle,
end_handle,
service_uuid,
TRUE);
}
else
{
APPL_TRACE_ERROR("invalid start_handle = %d end_handle = %d",
start_handle, end_handle);
}
}
}
}
} while (p_sdp_rec);
}
if ( p_srvc_cb != NULL)
/* start discover primary service */
bta_gattc_explore_srvc(bta_gattc_cb.sdp_conn_id, p_srvc_cb);
else
{
APPL_TRACE_ERROR("GATT service discovery is done on unknown connection");
}
GKI_freebuf(bta_gattc_cb.p_sdp_db);
bta_gattc_cb.p_sdp_db = NULL;
bta_gattc_cb.sdp_conn_id = 0;
}
/*******************************************************************************
**
** Function bta_gattc_sdp_service_disc
**
** Description Start DSP Service Discovert
**
** Returns void
**
*******************************************************************************/
static tBTA_GATT_STATUS bta_gattc_sdp_service_disc(UINT16 conn_id, tBTA_GATTC_SERV *p_server_cb)
{
tSDP_UUID uuid;
UINT16 num_attrs = 2;
UINT16 attr_list[2];
tBTA_GATT_STATUS status = BTA_GATT_ERROR;
memset (&uuid, 0, sizeof(tSDP_UUID));
uuid.len = LEN_UUID_16;
uuid.uu.uuid16 = UUID_PROTOCOL_ATT;
if((bta_gattc_cb.p_sdp_db = (tSDP_DISCOVERY_DB *)GKI_getbuf(BTA_GATT_SDP_DB_SIZE)) != NULL)
{
attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
attr_list[1] = ATTR_ID_PROTOCOL_DESC_LIST;
SDP_InitDiscoveryDb (bta_gattc_cb.p_sdp_db, BTA_GATT_SDP_DB_SIZE, 1,
&uuid, num_attrs, attr_list);
if(!SDP_ServiceSearchAttributeRequest (p_server_cb->server_bda,
bta_gattc_cb.p_sdp_db, &bta_gattc_sdp_callback))
{
GKI_freebuf(bta_gattc_cb.p_sdp_db);
bta_gattc_cb.p_sdp_db = NULL;
}
else
{
bta_gattc_cb.sdp_conn_id = conn_id;
status = BTA_GATT_OK;
}
}
return status;
}
/*******************************************************************************
**
** Function bta_gattc_disc_res_cback
** bta_gattc_disc_cmpl_cback
**
** Description callback functions to GATT client stack.
**
** Returns void
**
*******************************************************************************/
void bta_gattc_disc_res_cback (UINT16 conn_id, tGATT_DISC_TYPE disc_type, tGATT_DISC_RES *p_data)
{
tBTA_GATTC_SERV * p_srvc_cb = NULL;
BOOLEAN pri_srvc;
tBTA_GATTC_CLCB *p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
p_srvc_cb = bta_gattc_find_scb_by_cid(conn_id);
if (p_srvc_cb != NULL && p_clcb != NULL && p_clcb->state == BTA_GATTC_DISCOVER_ST)
{
switch (disc_type)
{
case GATT_DISC_SRVC_ALL:
/* discover services result, add services into a service list */
bta_gattc_add_srvc_to_list(p_srvc_cb,
p_data->handle,
p_data->value.group_value.e_handle,
p_data->value.group_value.service_type,
TRUE);
break;
case GATT_DISC_SRVC_BY_UUID:
bta_gattc_add_srvc_to_list(p_srvc_cb,
p_data->handle,
p_data->value.group_value.e_handle,
p_data->value.group_value.service_type,
TRUE);
break;
case GATT_DISC_INC_SRVC:
/* add included service into service list if it's secondary or it never showed up
in the primary service search */
pri_srvc = bta_gattc_srvc_in_list(p_srvc_cb,
p_data->value.incl_service.s_handle,
p_data->value.incl_service.e_handle,
p_data->value.incl_service.service_type);
if (!pri_srvc)
bta_gattc_add_srvc_to_list(p_srvc_cb,
p_data->value.incl_service.s_handle,
p_data->value.incl_service.e_handle,
p_data->value.incl_service.service_type,
FALSE);
/* add into database */
bta_gattc_add_attr_to_cache(p_srvc_cb,
p_data->handle,
&p_data->value.incl_service.service_type,
pri_srvc,
BTA_GATTC_ATTR_TYPE_INCL_SRVC);
break;
case GATT_DISC_CHAR:
/* add char value into database */
bta_gattc_add_char_to_list(p_srvc_cb,
p_data->handle,
p_data->value.dclr_value.val_handle,
p_data->value.dclr_value.char_uuid,
p_data->value.dclr_value.char_prop);
break;
case GATT_DISC_CHAR_DSCPT:
bta_gattc_add_attr_to_cache(p_srvc_cb, p_data->handle, &p_data->type, 0,
BTA_GATTC_ATTR_TYPE_CHAR_DESCR);
break;
}
}
}
void bta_gattc_disc_cmpl_cback (UINT16 conn_id, tGATT_DISC_TYPE disc_type, tGATT_STATUS status)
{
tBTA_GATTC_SERV * p_srvc_cb;
tBTA_GATTC_CLCB *p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
if ( p_clcb && (status != GATT_SUCCESS || p_clcb->status != GATT_SUCCESS) )
{
if (p_clcb->status == GATT_SUCCESS)
p_clcb->status = status;
bta_gattc_sm_execute(p_clcb, BTA_GATTC_DISCOVER_CMPL_EVT, NULL);
return;
}
p_srvc_cb = bta_gattc_find_scb_by_cid(conn_id);
if (p_srvc_cb != NULL)
{
switch (disc_type)
{
case GATT_DISC_SRVC_ALL:
case GATT_DISC_SRVC_BY_UUID:
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
bta_gattc_display_explore_record(p_srvc_cb->p_srvc_list, p_srvc_cb->next_avail_idx);
#endif
bta_gattc_explore_srvc(conn_id, p_srvc_cb);
break;
case GATT_DISC_INC_SRVC:
bta_gattc_incl_srvc_disc_cmpl(conn_id, p_srvc_cb);
break;
case GATT_DISC_CHAR:
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
bta_gattc_display_explore_record(p_srvc_cb->p_srvc_list, p_srvc_cb->next_avail_idx);
#endif
bta_gattc_char_disc_cmpl(conn_id, p_srvc_cb);
break;
case GATT_DISC_CHAR_DSCPT:
bta_gattc_char_dscpt_disc_cmpl(conn_id, p_srvc_cb);
break;
}
}
}
/*******************************************************************************
**
** Function bta_gattc_id2handle
**
** Description map GATT ID to handle in a given cache.
**
** Returns the handle mapped. 0 if not found.
**
*******************************************************************************/
UINT16 bta_gattc_id2handle(tBTA_GATTC_SERV *p_srcb, tBTA_GATT_SRVC_ID *p_service_id,
tBTA_GATT_ID *p_char_id, tBTA_GATT_ID *p_descr_uuid)
{
tBTA_GATTC_CACHE *p_cache = p_srcb->p_srvc_cache;
tBTA_GATTC_CACHE_ATTR *p_attr;
UINT8 j;
UINT16 handle = 0;
tBT_UUID attr_uuid;
BOOLEAN char_map = FALSE, done = FALSE;
while (p_service_id && p_cache && !done)
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("Service: handle[%d] uuid[0x%04x] inst[%d]",
p_cache->s_handle, p_cache->service_uuid.id.uuid.uu.uuid16,
p_cache->service_uuid.id.inst_id);
#endif
p_attr = p_cache->p_attr;
if (bta_gattc_srvcid_compare(p_service_id, &p_cache->service_uuid))
{
for (j = 0; p_attr; j ++)
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("\t Attr[0x%04x] handle[0x%04x] uuid[0x%04x] inst[%d] type[%d]",
j + 1, p_attr->attr_handle, p_attr->p_uuid->uuid16,
p_attr->inst_id, p_attr->attr_type);
#endif
bta_gattc_pack_attr_uuid(p_attr, &attr_uuid);
if (bta_gattc_uuid_compare(&p_char_id->uuid, &attr_uuid, TRUE) &&
p_char_id->inst_id == p_attr->inst_id)
{
if (p_descr_uuid == NULL)
{
handle = p_attr->attr_handle;
done = TRUE;
break;
}
else
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("found matching characteristic for the descriptor");
#endif
char_map = TRUE;
}
}
else if (char_map == TRUE)
{
if (p_attr->attr_type == BTA_GATTC_ATTR_TYPE_CHAR_DESCR)
{
if (p_descr_uuid != NULL &&
bta_gattc_uuid_compare(&p_descr_uuid->uuid, &attr_uuid, TRUE) &&
p_descr_uuid->inst_id == p_attr->inst_id)
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("found descriptor!!");
#endif
handle = p_attr->attr_handle;
done = TRUE;
break;
}
else
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("descriptor UUID not matching");
#endif
}
}
else /* another char */
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("no matching descptr found!!start of next characteristic");
#endif
char_map = FALSE;
done = TRUE;
break;
}
}
p_attr = p_attr->p_next;
}
}
p_cache = p_cache->p_next;
}
return handle;
}
/*******************************************************************************
**
** Function bta_gattc_handle2id
**
** Description map a handle to GATT ID in a given cache.
**
** Returns FALSE if map can not be found.
**
*******************************************************************************/
BOOLEAN bta_gattc_handle2id(tBTA_GATTC_SERV *p_srcb, UINT16 handle, tBTA_GATT_SRVC_ID *p_service_id,
tBTA_GATT_ID *p_char_id, tBTA_GATT_ID *p_descr_type)
{
tBTA_GATTC_CACHE *p_cache = p_srcb->p_srvc_cache;
tBTA_GATTC_CACHE_ATTR *p_attr, *p_char = NULL;
UINT8 j;
memset(p_service_id, 0, sizeof(tBTA_GATT_SRVC_ID));
memset(p_char_id, 0, sizeof(tBTA_GATT_ID));
memset(p_descr_type, 0, sizeof(tBTA_GATT_ID));
while (p_cache)
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("Service: handle[%d] uuid[0x%04x] inst[%d]",
p_cache->s_handle, p_cache->service_uuid.id.uuid.uu.uuid16,
p_cache->service_uuid.id.inst_id);
#endif
/* a service found */
if (p_cache->s_handle == handle)
{
memcpy(p_service_id, &p_cache->service_uuid, sizeof(tBTA_GATT_SRVC_ID));
return TRUE;
}
else /* start looking for attributes within the service */
{
p_attr = p_cache->p_attr;
for (j = 0; p_attr; j ++)
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("\t Attr[0x%04x] handle[0x%04x] uuid[0x%04x] inst[%d] type[%d]",
j + 1, p_attr->attr_handle, p_attr->p_uuid->uuid16,
p_attr->inst_id, p_attr->attr_type);
#endif
if (p_attr->attr_type == BTA_GATTC_ATTR_TYPE_CHAR)
p_char = p_attr;
if (handle == p_attr->attr_handle)
{
memcpy(p_service_id, &p_cache->service_uuid, sizeof(tBTA_GATT_SRVC_ID));
if (p_attr->attr_type == BTA_GATTC_ATTR_TYPE_CHAR_DESCR)
{
bta_gattc_pack_attr_uuid(p_attr, &p_descr_type->uuid);
p_descr_type->inst_id = p_attr->inst_id;
if (p_char != NULL)
{
bta_gattc_pack_attr_uuid(p_char, &p_char_id->uuid);
p_char_id->inst_id = p_char->inst_id;
}
else
{
APPL_TRACE_ERROR("descptr does not belong to any chracteristic");
}
}
else
/* is a characterisitc value or included service */
{
bta_gattc_pack_attr_uuid(p_attr, &p_char_id->uuid);
p_char_id->inst_id =p_attr->inst_id;
}
return TRUE;
}
p_attr = p_attr->p_next;
}
}
p_cache = p_cache->p_next;
}
return FALSE;
}
/*******************************************************************************
**
** Function bta_gattc_search_service
**
** Description search local cache for matching service record.
**
** Returns FALSE if map can not be found.
**
*******************************************************************************/
void bta_gattc_search_service(tBTA_GATTC_CLCB *p_clcb, tBT_UUID *p_uuid)
{
tBTA_GATTC_SERV *p_srcb = p_clcb->p_srcb;
tBTA_GATTC_CACHE *p_cache = p_srcb->p_srvc_cache;
tBTA_GATTC cb_data;
while (p_cache)
{
if (bta_gattc_uuid_compare(p_uuid, &p_cache->service_uuid.id.uuid, FALSE))
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("found service [0x%04x], inst[%d] handle [%d]",
p_cache->service_uuid.id.uuid.uu.uuid16,
p_cache->service_uuid.id.inst_id,
p_cache->s_handle);
#endif
if (p_clcb->p_rcb->p_cback)
{
memset(&cb_data, 0, sizeof(tBTA_GATTC));
cb_data.srvc_res.conn_id = p_clcb->bta_conn_id;
memcpy(&cb_data.srvc_res.service_uuid, &p_cache->service_uuid,
sizeof(tBTA_GATT_SRVC_ID));
(* p_clcb->p_rcb->p_cback)(BTA_GATTC_SEARCH_RES_EVT, &cb_data);
}
}
p_cache = p_cache->p_next;
}
}
/*******************************************************************************
**
** Function bta_gattc_find_record
**
** Description search local cache for matching attribute record.
**
** Parameter p_result: output parameter to store the characteristic/
** included service GATT ID.
**
** Returns GATT_ERROR is no recording found. BTA_GATT_OK if record found.
**
*******************************************************************************/
static tBTA_GATT_STATUS bta_gattc_find_record(tBTA_GATTC_SERV *p_srcb,
tBTA_GATTC_ATTR_TYPE attr_type,
tBTA_GATT_SRVC_ID *p_service_id,
tBTA_GATT_ID *p_start_rec,
tBT_UUID * p_uuid_cond,
tBTA_GATT_ID *p_result,
void *p_param)
{
tBTA_GATTC_CACHE *p_cache = p_srcb->p_srvc_cache;
tBTA_GATT_STATUS status = BTA_GATT_ERROR;
UINT8 i, j;
tBTA_GATTC_CACHE_ATTR *p_attr;
BOOLEAN char_found = FALSE, descr_found = FALSE;
tBTA_GATT_ID *p_descr_id = (tBTA_GATT_ID *)p_param;;
for (i = 0; p_cache && status != BTA_GATT_OK; i ++)
{
if (bta_gattc_srvcid_compare(p_service_id, &p_cache->service_uuid))
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("found matching service [0x%04x], inst[%d]",
p_cache->service_uuid.id.uuid.uu.uuid16,
p_cache->service_uuid.id.inst_id);
#endif
p_attr = p_cache->p_attr;
for (j = 0; p_attr; j ++)
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("\t Attr[%d] handle[0x%04x] uuid[0x%04x] inst[%d] type[%d]",
j + 1, p_attr->attr_handle,
p_attr->p_uuid->uuid16,
p_attr->inst_id,
p_attr->attr_type);
#endif
bta_gattc_pack_attr_uuid(p_attr, &p_result->uuid);
if (p_start_rec != NULL && char_found == FALSE)
{
/* find the starting record first */
if (bta_gattc_uuid_compare(&p_start_rec->uuid, &p_result->uuid, FALSE) &&
p_start_rec->inst_id == p_attr->inst_id &&
(attr_type == p_attr->attr_type ||
/* find descriptor would look for characteristic first */
(attr_type == BTA_GATTC_ATTR_TYPE_CHAR_DESCR &&
p_attr->attr_type == BTA_GATTC_ATTR_TYPE_CHAR)))
{
char_found = TRUE;
}
}
else
{
/* if looking for descriptor, here is the where the descrptor to be found */
if (attr_type == BTA_GATTC_ATTR_TYPE_CHAR_DESCR)
{
/* next characeteristic already, return error */
if (p_attr->attr_type != BTA_GATTC_ATTR_TYPE_CHAR_DESCR)
{
break;
}
else
{
/* find starting descriptor */
if (p_descr_id != NULL && !descr_found)
{
if (bta_gattc_uuid_compare(&p_descr_id->uuid, &p_result->uuid, TRUE)
&& p_descr_id->inst_id == p_attr->inst_id)
{
descr_found = TRUE;
}
}
else
{
/* with matching descriptor */
if (bta_gattc_uuid_compare(p_uuid_cond, &p_result->uuid, FALSE))
{
p_result->inst_id = p_attr->inst_id;
status = BTA_GATT_OK;
break;
}
}
}
}
else
{
if (bta_gattc_uuid_compare(p_uuid_cond, &p_result->uuid, FALSE) &&
attr_type == p_attr->attr_type)
{
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
APPL_TRACE_DEBUG("found char handle mapping characteristic");
#endif
p_result->inst_id = p_attr->inst_id;
if (p_param != NULL)
{
if (attr_type == BTA_GATTC_ATTR_TYPE_CHAR ||
attr_type == BTA_GATTC_ATTR_TYPE_INCL_SRVC)
{
*(tBTA_GATT_CHAR_PROP *)p_param = p_attr->property;
}
}
status = BTA_GATT_OK;
break;
}
}
}
p_attr = p_attr->p_next;
}
#if (defined BTA_GATT_DEBUG && BTA_GATT_DEBUG == TRUE)
if (status)
{
APPL_TRACE_ERROR("In the given service, can not find matching record");
}
#endif
break;
}
p_cache = p_cache->p_next;
}
return status;
}
/*******************************************************************************
**
** Function bta_gattc_query_cache
**
** Description search local cache for matching attribute record.
**
** Parameters conn_id: connection ID which identify the server.
** p_srvc_id: the service ID of which the characteristic is belonged to.
** *p_start_rec: start the search from the next record
** after the one identified by *p_start_rec.
** p_uuid_cond: UUID, if NULL find the first available
** characteristic/included service.
** p_output: output parameter which will store the GATT ID
** of the characteristic /included service found.
**
** Returns BTA_GATT_ERROR is no recording found. BTA_GATT_OK if record found.
**
*******************************************************************************/
tBTA_GATT_STATUS bta_gattc_query_cache(UINT16 conn_id,
tBTA_GATTC_ATTR_TYPE query_type,
tBTA_GATT_SRVC_ID *p_srvc_id,
tBTA_GATT_ID *p_start_rec,
tBT_UUID *p_uuid_cond,
tBTA_GATT_ID *p_output,
void *p_param)
{
tBTA_GATTC_CLCB *p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
tBTA_GATT_STATUS status = BTA_GATT_ILLEGAL_PARAMETER;
if (p_clcb != NULL )
{
if (p_clcb->state == BTA_GATTC_CONN_ST)
{
if (p_clcb->p_srcb &&
!p_clcb->p_srcb->p_srvc_list && /* no active discovery */
p_clcb->p_srcb->p_srvc_cache)
{
status = bta_gattc_find_record(p_clcb->p_srcb,
query_type,
p_srvc_id,
p_start_rec,
p_uuid_cond,
p_output,
p_param);
}
else
{
status = BTA_GATT_ERROR;
APPL_TRACE_ERROR("No server cache available");
}
}
else
{
APPL_TRACE_ERROR("server cache not available, CLCB state = %d", p_clcb->state);
status = (p_clcb->state == BTA_GATTC_DISCOVER_ST) ? BTA_GATT_BUSY : BTA_GATT_ERROR;
}
}
else
{
APPL_TRACE_ERROR("Unknown conn ID: %d", conn_id);
}
return status;
}
/*******************************************************************************
**
** Function bta_gattc_rebuild_cache
**
** Description rebuild server cache from NV cache.
**
** Parameters
**
** Returns None.
**
*******************************************************************************/
void bta_gattc_rebuild_cache(tBTA_GATTC_SERV *p_srvc_cb, UINT16 num_attr,
tBTA_GATTC_NV_ATTR *p_attr, UINT16 attr_index)
{
/* first attribute loading, initialize buffer */
APPL_TRACE_ERROR("bta_gattc_rebuild_cache");
if (attr_index == 0)
{
while (p_srvc_cb->cache_buffer.p_first)
GKI_freebuf (GKI_dequeue (&p_srvc_cb->cache_buffer));
if (bta_gattc_alloc_cache_buf(p_srvc_cb) == NULL)
{
APPL_TRACE_ERROR("allocate cache buffer failed, no resources");
}
else
{
p_srvc_cb->p_cur_srvc = p_srvc_cb->p_srvc_cache = NULL;
}
}
while (num_attr > 0 && p_attr != NULL)
{
switch (p_attr->attr_type)
{
case BTA_GATTC_ATTR_TYPE_SRVC:
bta_gattc_add_srvc_to_cache(p_srvc_cb,
p_attr->s_handle,
p_attr->e_handle,
&p_attr->uuid,
p_attr->is_primary,
p_attr->id);
break;
case BTA_GATTC_ATTR_TYPE_CHAR:
case BTA_GATTC_ATTR_TYPE_CHAR_DESCR:
case BTA_GATTC_ATTR_TYPE_INCL_SRVC:
bta_gattc_add_attr_to_cache(p_srvc_cb,
p_attr->s_handle,
&p_attr->uuid,
p_attr->prop,
p_attr->attr_type);
break;
}
p_attr ++;
num_attr --;
}
}
/*******************************************************************************
**
** Function bta_gattc_fill_nv_attr
**
** Description fill a NV attribute entry value
**
** Returns None.
**
*******************************************************************************/
void bta_gattc_fill_nv_attr(tBTA_GATTC_NV_ATTR *p_attr, UINT8 type, UINT16 s_handle,
UINT16 e_handle, UINT8 id, tBT_UUID uuid, UINT8 prop,
BOOLEAN is_primary)
{
p_attr->s_handle = s_handle;
p_attr->e_handle = e_handle;
p_attr->attr_type = type;
p_attr->is_primary = is_primary;
p_attr->id = id;
p_attr->prop = prop;
memcpy(&p_attr->uuid, &uuid, sizeof(tBT_UUID));
}
/*******************************************************************************
**
** Function bta_gattc_cache_save
**
** Description save the server cache into NV
**
** Returns None.
**
*******************************************************************************/
BOOLEAN bta_gattc_cache_save(tBTA_GATTC_SERV *p_srvc_cb, UINT16 conn_id)
{
tBTA_GATTC_CACHE *p_cur_srvc = p_srvc_cb->p_srvc_cache;
UINT8 i = 0;
UINT16 offset = 0;
tBTA_GATTC_NV_ATTR nv_attr[BTA_GATTC_NV_LOAD_MAX];
tBTA_GATTC_CACHE_ATTR *p_attr;
tBT_UUID uuid;
while (p_cur_srvc && i < BTA_GATTC_NV_LOAD_MAX)
{
if (offset ++ >= p_srvc_cb->attr_index)
{
bta_gattc_fill_nv_attr(&nv_attr[i++],
BTA_GATTC_ATTR_TYPE_SRVC,
p_cur_srvc->s_handle,
p_cur_srvc->e_handle,
p_cur_srvc->service_uuid.id.inst_id,
p_cur_srvc->service_uuid.id.uuid,
0,
p_cur_srvc->service_uuid.is_primary);
}
p_attr = p_cur_srvc->p_attr;
for (; p_attr && i < BTA_GATTC_NV_LOAD_MAX ; offset ++, p_attr = p_attr->p_next)
{
if (offset >= p_srvc_cb->attr_index)
{
if ((uuid.len = p_attr->uuid_len) == LEN_UUID_16)
{
uuid.uu.uuid16 = p_attr->p_uuid->uuid16;
}
else
{
memcpy(uuid.uu.uuid128, p_attr->p_uuid->uuid128, LEN_UUID_128);
}
bta_gattc_fill_nv_attr(&nv_attr[i++],
p_attr->attr_type,
p_attr->attr_handle,
0,
p_attr->inst_id,
uuid,
p_attr->property,
FALSE);
}
}
p_cur_srvc = p_cur_srvc->p_next;
}
if (i > 0)
{
bta_gattc_co_cache_save(p_srvc_cb->server_bda, BTA_GATTC_CI_CACHE_SAVE_EVT, i,
nv_attr, p_srvc_cb->attr_index, conn_id);
p_srvc_cb->attr_index += i;
return TRUE;
}
else
{
return FALSE;
}
}
#endif /* BTA_GATT_INCLUDED */