1554 lines
54 KiB
C++
1554 lines
54 KiB
C++
/******************************************************************************
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*
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* Copyright (C) 2003-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This file contains the GATT client discovery procedures and cache
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* related functions.
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*
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******************************************************************************/
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#define LOG_TAG "bt_bta_gattc"
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#include "bt_target.h"
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "bt_common.h"
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#include "bta_gattc_int.h"
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#include "bta_sys.h"
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#include "btm_api.h"
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#include "btm_ble_api.h"
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#include "btm_int.h"
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#include "osi/include/log.h"
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#include "osi/include/osi.h"
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#include "sdp_api.h"
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#include "sdpdefs.h"
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#include "utl.h"
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static void bta_gattc_cache_write(const RawAddress& server_bda,
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uint16_t num_attr, tBTA_GATTC_NV_ATTR* attr);
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static void bta_gattc_char_dscpt_disc_cmpl(uint16_t conn_id,
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tBTA_GATTC_SERV* p_srvc_cb);
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static tBTA_GATT_STATUS bta_gattc_sdp_service_disc(
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uint16_t conn_id, tBTA_GATTC_SERV* p_server_cb);
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extern void bta_to_btif_uuid(bt_uuid_t* p_dest, tBT_UUID* p_src);
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tBTA_GATTC_SERVICE* bta_gattc_find_matching_service(const list_t* services,
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uint16_t handle);
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tBTA_GATTC_DESCRIPTOR* bta_gattc_get_descriptor_srcb(tBTA_GATTC_SERV* p_srcb,
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uint16_t handle);
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tBTA_GATTC_CHARACTERISTIC* bta_gattc_get_characteristic_srcb(
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tBTA_GATTC_SERV* p_srcb, uint16_t handle);
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#define BTA_GATT_SDP_DB_SIZE 4096
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#define GATT_CACHE_PREFIX "/data/misc/bluetooth/gatt_cache_"
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#define GATT_CACHE_VERSION 2
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static void bta_gattc_generate_cache_file_name(char* buffer, size_t buffer_len,
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const RawAddress& bda) {
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snprintf(buffer, buffer_len, "%s%02x%02x%02x%02x%02x%02x", GATT_CACHE_PREFIX,
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bda.address[0], bda.address[1], bda.address[2], bda.address[3],
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bda.address[4], bda.address[5]);
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}
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/*****************************************************************************
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* Constants and data types
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****************************************************************************/
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typedef struct {
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tSDP_DISCOVERY_DB* p_sdp_db;
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uint16_t sdp_conn_id;
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} tBTA_GATTC_CB_DATA;
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#if (BTA_GATT_DEBUG == TRUE)
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static char* bta_gattc_attr_type[] = {
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"I", /* Included Service */
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"C", /* Characteristic */
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"D" /* Characteristic Descriptor */
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};
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/* utility functions */
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bool display_cache_attribute(void* data, void* context) {
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tBTA_GATTC_CACHE_ATTR* p_attr = data;
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APPL_TRACE_ERROR("\t Attr handle[%d] uuid[0x%04x] type[%s] prop[0x%1x]",
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p_attr->handle, p_attr->uuid.uu.uuid16,
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bta_gattc_attr_type[p_attr->attr_type], p_attr->property);
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return true;
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}
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bool display_cache_service(void* data, void* context) {
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tBTA_GATTC_SERVICE* p_cur_srvc = data;
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APPL_TRACE_ERROR("Service: handle[%d ~ %d] %s[0x%04x] inst[%d]",
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p_cur_srvc->s_handle, p_cur_srvc->e_handle,
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((p_cur_srvc->uuid.len == 2) ? "uuid16" : "uuid128"),
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p_cur_srvc->uuid.uu.uuid16, p_cur_srvc->handle);
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if (p_cur_srvc->characteristics != NULL) {
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list_foreach(p_cur_srvc->characteristics, display_cache_attribute, NULL);
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}
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return true;
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}
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/*******************************************************************************
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*
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* Function bta_gattc_display_cache_server
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*
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* Description debug function to display the server cache.
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*
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* Returns none.
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*
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******************************************************************************/
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static void bta_gattc_display_cache_server(list_t* p_cache) {
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APPL_TRACE_ERROR("<================Start Server Cache =============>");
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list_foreach(p_cache, display_cache_service, NULL);
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APPL_TRACE_ERROR("<================End Server Cache =============>");
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APPL_TRACE_ERROR(" ");
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}
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/*******************************************************************************
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*
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* Function bta_gattc_display_explore_record
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*
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* Description debug function to display the exploration list
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*
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* Returns none.
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*
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******************************************************************************/
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static void bta_gattc_display_explore_record(tBTA_GATTC_ATTR_REC* p_rec,
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uint8_t num_rec) {
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uint8_t i;
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tBTA_GATTC_ATTR_REC* pp = p_rec;
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APPL_TRACE_ERROR("<================Start Explore Queue =============>");
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for (i = 0; i < num_rec; i++, pp++) {
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APPL_TRACE_ERROR(
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"\t rec[%d] uuid[0x%04x] s_handle[%d] e_handle[%d] is_primary[%d]",
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i + 1, pp->uuid.uu.uuid16, pp->s_handle, pp->e_handle, pp->is_primary);
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}
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APPL_TRACE_ERROR("<================ End Explore Queue =============>");
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APPL_TRACE_ERROR(" ");
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}
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#endif /* BTA_GATT_DEBUG == TRUE */
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/*******************************************************************************
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*
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* Function bta_gattc_init_cache
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*
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* Description Initialize the database cache and discovery related
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* resources.
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*
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* Returns status
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*
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******************************************************************************/
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tBTA_GATT_STATUS bta_gattc_init_cache(tBTA_GATTC_SERV* p_srvc_cb) {
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if (p_srvc_cb->p_srvc_cache != NULL) {
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list_free(p_srvc_cb->p_srvc_cache);
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p_srvc_cb->p_srvc_cache = NULL;
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}
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osi_free(p_srvc_cb->p_srvc_list);
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p_srvc_cb->p_srvc_list =
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(tBTA_GATTC_ATTR_REC*)osi_malloc(BTA_GATTC_ATTR_LIST_SIZE);
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p_srvc_cb->total_srvc = 0;
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p_srvc_cb->cur_srvc_idx = 0;
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p_srvc_cb->cur_char_idx = 0;
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p_srvc_cb->next_avail_idx = 0;
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return BTA_GATT_OK;
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}
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static void characteristic_free(void* ptr) {
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tBTA_GATTC_CHARACTERISTIC* p_char = (tBTA_GATTC_CHARACTERISTIC*)ptr;
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list_free(p_char->descriptors);
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osi_free(p_char);
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}
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static void service_free(void* ptr) {
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tBTA_GATTC_SERVICE* srvc = (tBTA_GATTC_SERVICE*)ptr;
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list_free(srvc->characteristics);
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list_free(srvc->included_svc);
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osi_free(srvc);
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}
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/*******************************************************************************
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*
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* Function bta_gattc_add_srvc_to_cache
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*
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* Description Add a service into database cache.
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*
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* Returns status
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*
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******************************************************************************/
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static tBTA_GATT_STATUS bta_gattc_add_srvc_to_cache(tBTA_GATTC_SERV* p_srvc_cb,
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uint16_t s_handle,
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uint16_t e_handle,
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tBT_UUID* p_uuid,
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bool is_primary) {
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#if (BTA_GATT_DEBUG == TRUE)
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APPL_TRACE_DEBUG("Add a service into Service");
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#endif
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tBTA_GATTC_SERVICE* p_new_srvc =
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(tBTA_GATTC_SERVICE*)osi_malloc(sizeof(tBTA_GATTC_SERVICE));
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/* update service information */
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p_new_srvc->s_handle = s_handle;
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p_new_srvc->e_handle = e_handle;
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p_new_srvc->is_primary = is_primary;
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memcpy(&p_new_srvc->uuid, p_uuid, sizeof(tBT_UUID));
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p_new_srvc->handle = s_handle;
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p_new_srvc->characteristics = list_new(characteristic_free);
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p_new_srvc->included_svc = list_new(osi_free);
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if (p_srvc_cb->p_srvc_cache == NULL) {
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p_srvc_cb->p_srvc_cache = list_new(service_free);
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}
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list_append(p_srvc_cb->p_srvc_cache, p_new_srvc);
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return BTA_GATT_OK;
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}
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static tBTA_GATT_STATUS bta_gattc_add_char_to_cache(tBTA_GATTC_SERV* p_srvc_cb,
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uint16_t attr_handle,
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uint16_t value_handle,
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tBT_UUID* p_uuid,
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uint8_t property) {
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#if (BTA_GATT_DEBUG == TRUE)
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APPL_TRACE_DEBUG("%s: Add a characteristic into Service", __func__);
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APPL_TRACE_DEBUG("handle=%d uuid16=0x%x property=0x%x", value_handle,
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p_uuid->uu.uuid16, property);
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#endif
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tBTA_GATTC_SERVICE* service =
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bta_gattc_find_matching_service(p_srvc_cb->p_srvc_cache, attr_handle);
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if (!service) {
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APPL_TRACE_ERROR(
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"Illegal action to add char/descr/incl srvc for non-existing service!");
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return GATT_WRONG_STATE;
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}
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/* TODO(jpawlowski): We should use attribute handle, not value handle to refer
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to characteristic.
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This is just a temporary workaround.
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*/
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if (service->e_handle < value_handle) service->e_handle = value_handle;
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tBTA_GATTC_CHARACTERISTIC* characteristic =
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(tBTA_GATTC_CHARACTERISTIC*)osi_malloc(sizeof(tBTA_GATTC_CHARACTERISTIC));
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characteristic->handle = value_handle;
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characteristic->properties = property;
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characteristic->descriptors = list_new(osi_free);
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memcpy(&characteristic->uuid, p_uuid, sizeof(tBT_UUID));
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characteristic->service = service;
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list_append(service->characteristics, characteristic);
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return BTA_GATT_OK;
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}
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/*******************************************************************************
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*
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* Function bta_gattc_add_attr_to_cache
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*
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* Description Add an attribute into database cache buffer.
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*
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* Returns status
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*
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******************************************************************************/
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static tBTA_GATT_STATUS bta_gattc_add_attr_to_cache(
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tBTA_GATTC_SERV* p_srvc_cb, uint16_t handle, tBT_UUID* p_uuid,
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uint8_t property, uint16_t incl_srvc_s_handle, tBTA_GATTC_ATTR_TYPE type) {
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#if (BTA_GATT_DEBUG == TRUE)
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APPL_TRACE_DEBUG("%s: Add a [%s] into Service", __func__,
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bta_gattc_attr_type[type]);
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APPL_TRACE_DEBUG("handle=%d uuid16=0x%x property=0x%x type=%d", handle,
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p_uuid->uu.uuid16, property, type);
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#endif
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tBTA_GATTC_SERVICE* service =
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bta_gattc_find_matching_service(p_srvc_cb->p_srvc_cache, handle);
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if (!service) {
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APPL_TRACE_ERROR(
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"Illegal action to add char/descr/incl srvc for non-existing service!");
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return GATT_WRONG_STATE;
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}
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if (type == BTA_GATTC_ATTR_TYPE_INCL_SRVC) {
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tBTA_GATTC_INCLUDED_SVC* isvc =
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(tBTA_GATTC_INCLUDED_SVC*)osi_malloc(sizeof(tBTA_GATTC_INCLUDED_SVC));
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isvc->handle = handle;
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memcpy(&isvc->uuid, p_uuid, sizeof(tBT_UUID));
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isvc->owning_service = service;
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isvc->included_service = bta_gattc_find_matching_service(
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p_srvc_cb->p_srvc_cache, incl_srvc_s_handle);
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if (!isvc->included_service) {
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APPL_TRACE_ERROR(
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"%s: Illegal action to add non-existing included service!", __func__);
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osi_free(isvc);
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return GATT_WRONG_STATE;
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}
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list_append(service->included_svc, isvc);
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} else if (type == BTA_GATTC_ATTR_TYPE_CHAR_DESCR) {
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tBTA_GATTC_DESCRIPTOR* descriptor =
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(tBTA_GATTC_DESCRIPTOR*)osi_malloc(sizeof(tBTA_GATTC_DESCRIPTOR));
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descriptor->handle = handle;
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memcpy(&descriptor->uuid, p_uuid, sizeof(tBT_UUID));
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if (service->characteristics == NULL ||
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list_is_empty(service->characteristics)) {
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APPL_TRACE_ERROR(
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"%s: Illegal action to add descriptor before adding a "
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"characteristic!",
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__func__);
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osi_free(descriptor);
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return GATT_WRONG_STATE;
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}
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tBTA_GATTC_CHARACTERISTIC* char_node =
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(tBTA_GATTC_CHARACTERISTIC*)list_back(service->characteristics);
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descriptor->characteristic = char_node;
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list_append(char_node->descriptors, descriptor);
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}
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return BTA_GATT_OK;
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}
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/*******************************************************************************
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*
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* Function bta_gattc_get_disc_range
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*
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* Description get discovery stating and ending handle range.
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*
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* Returns None.
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*
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******************************************************************************/
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void bta_gattc_get_disc_range(tBTA_GATTC_SERV* p_srvc_cb, uint16_t* p_s_hdl,
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uint16_t* p_e_hdl, bool is_srvc) {
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tBTA_GATTC_ATTR_REC* p_rec = NULL;
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if (is_srvc) {
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p_rec = p_srvc_cb->p_srvc_list + p_srvc_cb->cur_srvc_idx;
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*p_s_hdl = p_rec->s_handle;
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} else {
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p_rec = p_srvc_cb->p_srvc_list + p_srvc_cb->cur_char_idx;
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*p_s_hdl = p_rec->s_handle + 1;
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}
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*p_e_hdl = p_rec->e_handle;
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#if (BTA_GATT_DEBUG == TRUE)
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APPL_TRACE_DEBUG("discover range [%d ~ %d]", p_rec->s_handle,
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p_rec->e_handle);
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#endif
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return;
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}
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/*******************************************************************************
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*
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* Function bta_gattc_discover_pri_service
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*
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* Description Start primary service discovery
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*
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* Returns status of the operation.
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*
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******************************************************************************/
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tBTA_GATT_STATUS bta_gattc_discover_pri_service(uint16_t conn_id,
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tBTA_GATTC_SERV* p_server_cb,
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uint8_t disc_type) {
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tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
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tBTA_GATT_STATUS status = BTA_GATT_ERROR;
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if (p_clcb) {
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if (p_clcb->transport == BTA_TRANSPORT_LE)
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status = bta_gattc_discover_procedure(conn_id, p_server_cb, disc_type);
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else
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status = bta_gattc_sdp_service_disc(conn_id, p_server_cb);
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}
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return status;
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}
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/*******************************************************************************
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*
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* Function bta_gattc_discover_procedure
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*
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* Description Start a particular type of discovery procedure on server.
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*
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* Returns status of the operation.
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*
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******************************************************************************/
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tBTA_GATT_STATUS bta_gattc_discover_procedure(uint16_t conn_id,
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tBTA_GATTC_SERV* p_server_cb,
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uint8_t disc_type) {
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tGATT_DISC_PARAM param;
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bool is_service = true;
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memset(¶m, 0, sizeof(tGATT_DISC_PARAM));
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if (disc_type == GATT_DISC_SRVC_ALL || disc_type == GATT_DISC_SRVC_BY_UUID) {
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param.s_handle = 1;
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param.e_handle = 0xFFFF;
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} else {
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if (disc_type == GATT_DISC_CHAR_DSCPT) is_service = false;
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bta_gattc_get_disc_range(p_server_cb, ¶m.s_handle, ¶m.e_handle,
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is_service);
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if (param.s_handle > param.e_handle) {
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return GATT_ERROR;
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}
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}
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return GATTC_Discover(conn_id, disc_type, ¶m);
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}
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/*******************************************************************************
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*
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* Function bta_gattc_start_disc_include_srvc
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*
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* Description Start discovery for included service
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*
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* Returns status of the operation.
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*
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******************************************************************************/
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tBTA_GATT_STATUS bta_gattc_start_disc_include_srvc(uint16_t conn_id,
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tBTA_GATTC_SERV* p_srvc_cb) {
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return bta_gattc_discover_procedure(conn_id, p_srvc_cb, GATT_DISC_INC_SRVC);
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}
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/*******************************************************************************
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*
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* Function bta_gattc_start_disc_char
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*
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* Description Start discovery for characteristic
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*
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* Returns status of the operation.
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*
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******************************************************************************/
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tBTA_GATT_STATUS bta_gattc_start_disc_char(uint16_t conn_id,
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tBTA_GATTC_SERV* p_srvc_cb) {
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p_srvc_cb->total_char = 0;
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return bta_gattc_discover_procedure(conn_id, p_srvc_cb, GATT_DISC_CHAR);
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}
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/*******************************************************************************
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*
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* Function bta_gattc_start_disc_char_dscp
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*
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* Description Start discovery for characteristic descriptor
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*
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* Returns none.
|
|
*
|
|
******************************************************************************/
|
|
void bta_gattc_start_disc_char_dscp(uint16_t 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_t 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) == 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*/
|
|
LOG_WARN(LOG_TAG, "%s no more services found", __func__);
|
|
|
|
#if (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;
|
|
|
|
if (btm_sec_is_a_bonded_dev(p_srvc_cb->server_bda)) {
|
|
bta_gattc_cache_save(p_clcb->p_srcb, p_clcb->bta_conn_id);
|
|
}
|
|
|
|
bta_gattc_reset_discover_st(p_clcb->p_srcb, BTA_GATT_OK);
|
|
}
|
|
/*******************************************************************************
|
|
*
|
|
* 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_t 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_t 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_char_to_cache(p_srvc_cb, p_rec->char_decl_handle,
|
|
p_rec->s_handle, &p_rec->uuid, p_rec->property);
|
|
|
|
/* 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_t 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_char_to_cache(p_srvc_cb, p_rec->char_decl_handle,
|
|
p_rec->s_handle, &p_rec->uuid, p_rec->property);
|
|
|
|
/* 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 (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 bool bta_gattc_srvc_in_list(tBTA_GATTC_SERV* p_srvc_cb,
|
|
uint16_t s_handle, uint16_t e_handle,
|
|
UNUSED_ATTR tBT_UUID uuid) {
|
|
tBTA_GATTC_ATTR_REC* p_rec = NULL;
|
|
uint8_t i;
|
|
bool exist_srvc = false;
|
|
|
|
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_t s_handle,
|
|
uint16_t e_handle,
|
|
tBT_UUID uuid,
|
|
bool 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;
|
|
|
|
APPL_TRACE_DEBUG("%s handle=%d, service type=0x%04x", __func__, s_handle,
|
|
uuid.uu.uuid16);
|
|
|
|
p_rec->s_handle = s_handle;
|
|
p_rec->e_handle = e_handle;
|
|
p_rec->is_primary = is_primary;
|
|
memcpy(&p_rec->uuid, &uuid, sizeof(tBT_UUID));
|
|
|
|
p_srvc_cb->total_srvc++;
|
|
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_t decl_handle,
|
|
uint16_t value_handle,
|
|
tBT_UUID uuid,
|
|
uint8_t 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->char_decl_handle = decl_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_t sdp_status, void* user_data) {
|
|
tSDP_DISC_REC* p_sdp_rec = NULL;
|
|
tBT_UUID service_uuid;
|
|
tSDP_PROTOCOL_ELEM pe;
|
|
uint16_t start_handle = 0, end_handle = 0;
|
|
tBTA_GATTC_CB_DATA* cb_data = (tBTA_GATTC_CB_DATA*)user_data;
|
|
tBTA_GATTC_SERV* p_srvc_cb = bta_gattc_find_scb_by_cid(cb_data->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(cb_data->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_t)pe.params[0];
|
|
end_handle = (uint16_t)pe.params[1];
|
|
|
|
#if (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(cb_data->sdp_conn_id, p_srvc_cb);
|
|
} else {
|
|
APPL_TRACE_ERROR("GATT service discovery is done on unknown connection");
|
|
}
|
|
|
|
/* both were allocated in bta_gattc_sdp_service_disc */
|
|
osi_free(cb_data->p_sdp_db);
|
|
osi_free(cb_data);
|
|
}
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_gattc_sdp_service_disc
|
|
*
|
|
* Description Start DSP Service Discovert
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
static tBTA_GATT_STATUS bta_gattc_sdp_service_disc(
|
|
uint16_t conn_id, tBTA_GATTC_SERV* p_server_cb) {
|
|
tSDP_UUID uuid;
|
|
uint16_t num_attrs = 2;
|
|
uint16_t attr_list[2];
|
|
|
|
memset(&uuid, 0, sizeof(tSDP_UUID));
|
|
|
|
uuid.len = LEN_UUID_16;
|
|
uuid.uu.uuid16 = UUID_PROTOCOL_ATT;
|
|
|
|
/*
|
|
* On success, cb_data will be freed inside bta_gattc_sdp_callback,
|
|
* otherwise it will be freed within this function.
|
|
*/
|
|
tBTA_GATTC_CB_DATA* cb_data =
|
|
(tBTA_GATTC_CB_DATA*)osi_malloc(sizeof(tBTA_GATTC_CB_DATA));
|
|
|
|
cb_data->p_sdp_db = (tSDP_DISCOVERY_DB*)osi_malloc(BTA_GATT_SDP_DB_SIZE);
|
|
attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
|
|
attr_list[1] = ATTR_ID_PROTOCOL_DESC_LIST;
|
|
|
|
SDP_InitDiscoveryDb(cb_data->p_sdp_db, BTA_GATT_SDP_DB_SIZE, 1, &uuid,
|
|
num_attrs, attr_list);
|
|
|
|
if (!SDP_ServiceSearchAttributeRequest2(p_server_cb->server_bda,
|
|
cb_data->p_sdp_db,
|
|
&bta_gattc_sdp_callback, cb_data)) {
|
|
osi_free(cb_data->p_sdp_db);
|
|
osi_free(cb_data);
|
|
return BTA_GATT_ERROR;
|
|
}
|
|
|
|
cb_data->sdp_conn_id = conn_id;
|
|
return BTA_GATT_OK;
|
|
}
|
|
/*******************************************************************************
|
|
*
|
|
* 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_t conn_id, tGATT_DISC_TYPE disc_type,
|
|
tGATT_DISC_RES* p_data) {
|
|
tBTA_GATTC_SERV* p_srvc_cb = NULL;
|
|
bool 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, p_data->value.incl_service.s_handle,
|
|
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,
|
|
0 /* incl_srvc_handle */,
|
|
BTA_GATTC_ATTR_TYPE_CHAR_DESCR);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
void bta_gattc_disc_cmpl_cback(uint16_t 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 (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 (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 (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_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 cb_data;
|
|
|
|
if (!p_clcb->p_srcb->p_srvc_cache ||
|
|
list_is_empty(p_clcb->p_srcb->p_srvc_cache))
|
|
return;
|
|
|
|
for (list_node_t* sn = list_begin(p_clcb->p_srcb->p_srvc_cache);
|
|
sn != list_end(p_clcb->p_srcb->p_srvc_cache); sn = list_next(sn)) {
|
|
tBTA_GATTC_SERVICE* p_cache = (tBTA_GATTC_SERVICE*)list_node(sn);
|
|
|
|
if (!bta_gattc_uuid_compare(p_uuid, &p_cache->uuid, false)) continue;
|
|
|
|
#if (BTA_GATT_DEBUG == TRUE)
|
|
APPL_TRACE_DEBUG("found service [0x%04x], inst[%d] handle [%d]",
|
|
p_cache->uuid.uu.uuid16, p_cache->handle,
|
|
p_cache->s_handle);
|
|
#endif
|
|
if (!p_clcb->p_rcb->p_cback) continue;
|
|
|
|
memset(&cb_data, 0, sizeof(tBTA_GATTC));
|
|
|
|
cb_data.srvc_res.conn_id = p_clcb->bta_conn_id;
|
|
cb_data.srvc_res.service_uuid.inst_id = p_cache->handle;
|
|
memcpy(&cb_data.srvc_res.service_uuid.uuid, &p_cache->uuid,
|
|
sizeof(tBTA_GATT_ID));
|
|
|
|
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_SEARCH_RES_EVT, &cb_data);
|
|
}
|
|
}
|
|
|
|
list_t* bta_gattc_get_services_srcb(tBTA_GATTC_SERV* p_srcb) {
|
|
if (!p_srcb || !p_srcb->p_srvc_cache || list_is_empty(p_srcb->p_srvc_cache))
|
|
return NULL;
|
|
|
|
return p_srcb->p_srvc_cache;
|
|
}
|
|
|
|
const list_t* bta_gattc_get_services(uint16_t conn_id) {
|
|
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
|
|
|
|
if (p_clcb == NULL) return NULL;
|
|
|
|
tBTA_GATTC_SERV* p_srcb = p_clcb->p_srcb;
|
|
|
|
return bta_gattc_get_services_srcb(p_srcb);
|
|
}
|
|
|
|
tBTA_GATTC_SERVICE* bta_gattc_find_matching_service(const list_t* services,
|
|
uint16_t handle) {
|
|
if (!services || list_is_empty(services)) return NULL;
|
|
|
|
for (list_node_t* sn = list_begin(services); sn != list_end(services);
|
|
sn = list_next(sn)) {
|
|
tBTA_GATTC_SERVICE* service = (tBTA_GATTC_SERVICE*)list_node(sn);
|
|
|
|
if (handle >= service->s_handle && handle <= service->e_handle)
|
|
return service;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const tBTA_GATTC_SERVICE* bta_gattc_get_service_for_handle_srcb(
|
|
tBTA_GATTC_SERV* p_srcb, uint16_t handle) {
|
|
const list_t* services = bta_gattc_get_services_srcb(p_srcb);
|
|
|
|
return bta_gattc_find_matching_service(services, handle);
|
|
}
|
|
|
|
const tBTA_GATTC_SERVICE* bta_gattc_get_service_for_handle(uint16_t conn_id,
|
|
uint16_t handle) {
|
|
const list_t* services = bta_gattc_get_services(conn_id);
|
|
|
|
return bta_gattc_find_matching_service(services, handle);
|
|
}
|
|
|
|
tBTA_GATTC_CHARACTERISTIC* bta_gattc_get_characteristic_srcb(
|
|
tBTA_GATTC_SERV* p_srcb, uint16_t handle) {
|
|
const tBTA_GATTC_SERVICE* service =
|
|
bta_gattc_get_service_for_handle_srcb(p_srcb, handle);
|
|
|
|
if (!service) return NULL;
|
|
|
|
for (list_node_t* cn = list_begin(service->characteristics);
|
|
cn != list_end(service->characteristics); cn = list_next(cn)) {
|
|
tBTA_GATTC_CHARACTERISTIC* p_char =
|
|
(tBTA_GATTC_CHARACTERISTIC*)list_node(cn);
|
|
if (handle == p_char->handle) return p_char;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
tBTA_GATTC_CHARACTERISTIC* bta_gattc_get_characteristic(uint16_t conn_id,
|
|
uint16_t handle) {
|
|
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
|
|
|
|
if (p_clcb == NULL) return NULL;
|
|
|
|
tBTA_GATTC_SERV* p_srcb = p_clcb->p_srcb;
|
|
return bta_gattc_get_characteristic_srcb(p_srcb, handle);
|
|
}
|
|
|
|
tBTA_GATTC_DESCRIPTOR* bta_gattc_get_descriptor_srcb(tBTA_GATTC_SERV* p_srcb,
|
|
uint16_t handle) {
|
|
const tBTA_GATTC_SERVICE* service =
|
|
bta_gattc_get_service_for_handle_srcb(p_srcb, handle);
|
|
|
|
if (!service) {
|
|
return NULL;
|
|
}
|
|
|
|
for (list_node_t* cn = list_begin(service->characteristics);
|
|
cn != list_end(service->characteristics); cn = list_next(cn)) {
|
|
tBTA_GATTC_CHARACTERISTIC* p_char =
|
|
(tBTA_GATTC_CHARACTERISTIC*)list_node(cn);
|
|
for (list_node_t* dn = list_begin(p_char->descriptors);
|
|
dn != list_end(p_char->descriptors); dn = list_next(dn)) {
|
|
tBTA_GATTC_DESCRIPTOR* p_desc = (tBTA_GATTC_DESCRIPTOR*)list_node(dn);
|
|
if (handle == p_desc->handle) return p_desc;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
tBTA_GATTC_DESCRIPTOR* bta_gattc_get_descriptor(uint16_t conn_id,
|
|
uint16_t handle) {
|
|
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
|
|
|
|
if (p_clcb == NULL) return NULL;
|
|
|
|
tBTA_GATTC_SERV* p_srcb = p_clcb->p_srcb;
|
|
return bta_gattc_get_descriptor_srcb(p_srcb, handle);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_gattc_fill_gatt_db_el
|
|
*
|
|
* Description fill a btgatt_db_element_t value
|
|
*
|
|
* Returns None.
|
|
*
|
|
******************************************************************************/
|
|
void bta_gattc_fill_gatt_db_el(btgatt_db_element_t* p_attr,
|
|
bt_gatt_db_attribute_type_t type,
|
|
uint16_t att_handle, uint16_t s_handle,
|
|
uint16_t e_handle, uint16_t id, tBT_UUID uuid,
|
|
uint8_t prop) {
|
|
p_attr->type = type;
|
|
p_attr->attribute_handle = att_handle;
|
|
p_attr->start_handle = s_handle;
|
|
p_attr->end_handle = e_handle;
|
|
p_attr->id = id;
|
|
p_attr->properties = prop;
|
|
|
|
// Permissions are not discoverable using the attribute protocol.
|
|
// Core 5.0, Part F, 3.2.5 Attribute Permissions
|
|
p_attr->permissions = 0;
|
|
bta_to_btif_uuid(&p_attr->uuid, &uuid);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* Returns number of elements inside db from start_handle to end_handle
|
|
******************************************************************************/
|
|
static size_t bta_gattc_get_db_size(list_t* services, uint16_t start_handle,
|
|
uint16_t end_handle) {
|
|
if (!services || list_is_empty(services)) return 0;
|
|
|
|
size_t db_size = 0;
|
|
|
|
for (list_node_t* sn = list_begin(services); sn != list_end(services);
|
|
sn = list_next(sn)) {
|
|
tBTA_GATTC_SERVICE* p_cur_srvc = (tBTA_GATTC_SERVICE*)list_node(sn);
|
|
|
|
if (p_cur_srvc->s_handle < start_handle) continue;
|
|
|
|
if (p_cur_srvc->e_handle > end_handle) break;
|
|
|
|
db_size++;
|
|
if (!p_cur_srvc->characteristics ||
|
|
list_is_empty(p_cur_srvc->characteristics))
|
|
continue;
|
|
|
|
for (list_node_t* cn = list_begin(p_cur_srvc->characteristics);
|
|
cn != list_end(p_cur_srvc->characteristics); cn = list_next(cn)) {
|
|
tBTA_GATTC_CHARACTERISTIC* p_char =
|
|
(tBTA_GATTC_CHARACTERISTIC*)list_node(cn);
|
|
db_size++;
|
|
|
|
if (p_char->descriptors) db_size += list_length(p_char->descriptors);
|
|
}
|
|
|
|
if (p_cur_srvc->included_svc) {
|
|
db_size += list_length(p_cur_srvc->included_svc);
|
|
}
|
|
}
|
|
|
|
return db_size;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_gattc_get_gatt_db_impl
|
|
*
|
|
* Description copy the server GATT database into db parameter.
|
|
*
|
|
* Parameters p_srvc_cb: server.
|
|
* db: output parameter which will contain GATT database copy.
|
|
* Caller is responsible for freeing it.
|
|
* count: output parameter which will contain number of
|
|
* elements in database.
|
|
*
|
|
* Returns None.
|
|
*
|
|
******************************************************************************/
|
|
static void bta_gattc_get_gatt_db_impl(tBTA_GATTC_SERV* p_srvc_cb,
|
|
uint16_t start_handle,
|
|
uint16_t end_handle,
|
|
btgatt_db_element_t** db, int* count) {
|
|
APPL_TRACE_DEBUG("%s: start_handle 0x%04x, end_handle 0x%04x", __func__,
|
|
start_handle, end_handle);
|
|
|
|
if (!p_srvc_cb->p_srvc_cache || list_is_empty(p_srvc_cb->p_srvc_cache)) {
|
|
*count = 0;
|
|
*db = NULL;
|
|
return;
|
|
}
|
|
|
|
size_t db_size =
|
|
bta_gattc_get_db_size(p_srvc_cb->p_srvc_cache, start_handle, end_handle);
|
|
|
|
void* buffer = osi_malloc(db_size * sizeof(btgatt_db_element_t));
|
|
btgatt_db_element_t* curr_db_attr = (btgatt_db_element_t*)buffer;
|
|
|
|
for (list_node_t* sn = list_begin(p_srvc_cb->p_srvc_cache);
|
|
sn != list_end(p_srvc_cb->p_srvc_cache); sn = list_next(sn)) {
|
|
tBTA_GATTC_SERVICE* p_cur_srvc = (tBTA_GATTC_SERVICE*)list_node(sn);
|
|
|
|
if (p_cur_srvc->s_handle < start_handle) continue;
|
|
|
|
if (p_cur_srvc->e_handle > end_handle) break;
|
|
|
|
bta_gattc_fill_gatt_db_el(
|
|
curr_db_attr, p_cur_srvc->is_primary ? BTGATT_DB_PRIMARY_SERVICE
|
|
: BTGATT_DB_SECONDARY_SERVICE,
|
|
0 /* att_handle */, p_cur_srvc->s_handle, p_cur_srvc->e_handle,
|
|
p_cur_srvc->s_handle, p_cur_srvc->uuid, 0 /* prop */);
|
|
curr_db_attr++;
|
|
|
|
if (!p_cur_srvc->characteristics ||
|
|
list_is_empty(p_cur_srvc->characteristics))
|
|
continue;
|
|
|
|
for (list_node_t* cn = list_begin(p_cur_srvc->characteristics);
|
|
cn != list_end(p_cur_srvc->characteristics); cn = list_next(cn)) {
|
|
tBTA_GATTC_CHARACTERISTIC* p_char =
|
|
(tBTA_GATTC_CHARACTERISTIC*)list_node(cn);
|
|
|
|
bta_gattc_fill_gatt_db_el(curr_db_attr, BTGATT_DB_CHARACTERISTIC,
|
|
p_char->handle, 0 /* s_handle */,
|
|
0 /* e_handle */, p_char->handle, p_char->uuid,
|
|
p_char->properties);
|
|
curr_db_attr++;
|
|
|
|
if (!p_char->descriptors || list_is_empty(p_char->descriptors)) continue;
|
|
|
|
for (list_node_t* dn = list_begin(p_char->descriptors);
|
|
dn != list_end(p_char->descriptors); dn = list_next(dn)) {
|
|
tBTA_GATTC_DESCRIPTOR* p_desc = (tBTA_GATTC_DESCRIPTOR*)list_node(dn);
|
|
|
|
bta_gattc_fill_gatt_db_el(curr_db_attr, BTGATT_DB_DESCRIPTOR,
|
|
p_desc->handle, 0 /* s_handle */,
|
|
0 /* e_handle */, p_desc->handle,
|
|
p_desc->uuid, 0 /* property */);
|
|
curr_db_attr++;
|
|
}
|
|
}
|
|
|
|
if (!p_cur_srvc->included_svc || list_is_empty(p_cur_srvc->included_svc))
|
|
continue;
|
|
|
|
for (list_node_t* isn = list_begin(p_cur_srvc->included_svc);
|
|
isn != list_end(p_cur_srvc->included_svc); isn = list_next(isn)) {
|
|
tBTA_GATTC_INCLUDED_SVC* p_isvc =
|
|
(tBTA_GATTC_INCLUDED_SVC*)list_node(isn);
|
|
|
|
bta_gattc_fill_gatt_db_el(curr_db_attr, BTGATT_DB_INCLUDED_SERVICE,
|
|
p_isvc->handle, 0 /* s_handle */,
|
|
0 /* e_handle */, p_isvc->handle, p_isvc->uuid,
|
|
0 /* property */);
|
|
curr_db_attr++;
|
|
}
|
|
}
|
|
|
|
*db = (btgatt_db_element_t*)buffer;
|
|
*count = db_size;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_gattc_get_gatt_db
|
|
*
|
|
* Description copy the server GATT database into db parameter.
|
|
*
|
|
* Parameters conn_id: connection ID which identify the server.
|
|
* db: output parameter which will contain GATT database copy.
|
|
* Caller is responsible for freeing it.
|
|
* count: number of elements in database.
|
|
*
|
|
* Returns None.
|
|
*
|
|
******************************************************************************/
|
|
void bta_gattc_get_gatt_db(uint16_t conn_id, uint16_t start_handle,
|
|
uint16_t end_handle, btgatt_db_element_t** db,
|
|
int* count) {
|
|
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
|
|
|
|
LOG_DEBUG(LOG_TAG, "%s", __func__);
|
|
if (p_clcb == NULL) {
|
|
APPL_TRACE_ERROR("Unknown conn ID: %d", conn_id);
|
|
return;
|
|
}
|
|
|
|
if (p_clcb->state != BTA_GATTC_CONN_ST) {
|
|
APPL_TRACE_ERROR("server cache not available, CLCB state = %d",
|
|
p_clcb->state);
|
|
return;
|
|
}
|
|
|
|
if (!p_clcb->p_srcb ||
|
|
p_clcb->p_srcb->p_srvc_list || /* no active discovery */
|
|
!p_clcb->p_srcb->p_srvc_cache) {
|
|
APPL_TRACE_ERROR("No server cache available");
|
|
return;
|
|
}
|
|
|
|
bta_gattc_get_gatt_db_impl(p_clcb->p_srcb, start_handle, end_handle, db,
|
|
count);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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_t num_attr,
|
|
tBTA_GATTC_NV_ATTR* p_attr) {
|
|
/* first attribute loading, initialize buffer */
|
|
APPL_TRACE_ERROR("%s: bta_gattc_rebuild_cache", __func__);
|
|
|
|
list_free(p_srvc_cb->p_srvc_cache);
|
|
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);
|
|
break;
|
|
|
|
case BTA_GATTC_ATTR_TYPE_CHAR:
|
|
// TODO(jpawlowski): store decl_handle properly.
|
|
bta_gattc_add_char_to_cache(p_srvc_cb, p_attr->s_handle,
|
|
p_attr->s_handle, &p_attr->uuid,
|
|
p_attr->prop);
|
|
break;
|
|
|
|
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->incl_srvc_handle,
|
|
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_t type,
|
|
uint16_t s_handle, uint16_t e_handle, tBT_UUID uuid,
|
|
uint8_t prop, uint16_t incl_srvc_handle,
|
|
bool 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 = 0;
|
|
p_attr->prop = prop;
|
|
p_attr->incl_srvc_handle = incl_srvc_handle;
|
|
|
|
memcpy(&p_attr->uuid, &uuid, sizeof(tBT_UUID));
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_gattc_cache_save
|
|
*
|
|
* Description save the server cache into NV
|
|
*
|
|
* Returns None.
|
|
*
|
|
******************************************************************************/
|
|
void bta_gattc_cache_save(tBTA_GATTC_SERV* p_srvc_cb, uint16_t conn_id) {
|
|
if (!p_srvc_cb->p_srvc_cache || list_is_empty(p_srvc_cb->p_srvc_cache))
|
|
return;
|
|
|
|
int i = 0;
|
|
size_t db_size =
|
|
bta_gattc_get_db_size(p_srvc_cb->p_srvc_cache, 0x0000, 0xFFFF);
|
|
tBTA_GATTC_NV_ATTR* nv_attr =
|
|
(tBTA_GATTC_NV_ATTR*)osi_malloc(db_size * sizeof(tBTA_GATTC_NV_ATTR));
|
|
|
|
for (list_node_t* sn = list_begin(p_srvc_cb->p_srvc_cache);
|
|
sn != list_end(p_srvc_cb->p_srvc_cache); sn = list_next(sn)) {
|
|
tBTA_GATTC_SERVICE* p_cur_srvc = (tBTA_GATTC_SERVICE*)list_node(sn);
|
|
|
|
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->uuid, 0 /* properties */,
|
|
0 /* incl_srvc_handle */, p_cur_srvc->is_primary);
|
|
}
|
|
|
|
for (list_node_t* sn = list_begin(p_srvc_cb->p_srvc_cache);
|
|
sn != list_end(p_srvc_cb->p_srvc_cache); sn = list_next(sn)) {
|
|
tBTA_GATTC_SERVICE* p_cur_srvc = (tBTA_GATTC_SERVICE*)list_node(sn);
|
|
|
|
if (!p_cur_srvc->characteristics ||
|
|
list_is_empty(p_cur_srvc->characteristics))
|
|
continue;
|
|
|
|
for (list_node_t* cn = list_begin(p_cur_srvc->characteristics);
|
|
cn != list_end(p_cur_srvc->characteristics); cn = list_next(cn)) {
|
|
tBTA_GATTC_CHARACTERISTIC* p_char =
|
|
(tBTA_GATTC_CHARACTERISTIC*)list_node(cn);
|
|
|
|
bta_gattc_fill_nv_attr(
|
|
&nv_attr[i++], BTA_GATTC_ATTR_TYPE_CHAR, p_char->handle, 0,
|
|
p_char->uuid, p_char->properties, 0 /* incl_srvc_handle */, false);
|
|
|
|
if (!p_char->descriptors || list_is_empty(p_char->descriptors)) continue;
|
|
|
|
for (list_node_t* dn = list_begin(p_char->descriptors);
|
|
dn != list_end(p_char->descriptors); dn = list_next(dn)) {
|
|
tBTA_GATTC_DESCRIPTOR* p_desc = (tBTA_GATTC_DESCRIPTOR*)list_node(dn);
|
|
|
|
bta_gattc_fill_nv_attr(
|
|
&nv_attr[i++], BTA_GATTC_ATTR_TYPE_CHAR_DESCR, p_desc->handle, 0,
|
|
p_desc->uuid, 0 /* properties */, 0 /* incl_srvc_handle */, false);
|
|
}
|
|
}
|
|
|
|
if (!p_cur_srvc->included_svc || list_is_empty(p_cur_srvc->included_svc))
|
|
continue;
|
|
|
|
for (list_node_t* an = list_begin(p_cur_srvc->included_svc);
|
|
an != list_end(p_cur_srvc->included_svc); an = list_next(an)) {
|
|
tBTA_GATTC_INCLUDED_SVC* p_isvc = (tBTA_GATTC_INCLUDED_SVC*)list_node(an);
|
|
|
|
bta_gattc_fill_nv_attr(&nv_attr[i++], BTA_GATTC_ATTR_TYPE_INCL_SRVC,
|
|
p_isvc->handle, 0, p_isvc->uuid,
|
|
0 /* properties */,
|
|
p_isvc->included_service->s_handle, false);
|
|
}
|
|
}
|
|
|
|
bta_gattc_cache_write(p_srvc_cb->server_bda, db_size, nv_attr);
|
|
osi_free(nv_attr);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_gattc_cache_load
|
|
*
|
|
* Description Load GATT cache from storage for server.
|
|
*
|
|
* Parameter p_clcb: pointer to server clcb, that will
|
|
* be filled from storage
|
|
* Returns true on success, false otherwise
|
|
*
|
|
******************************************************************************/
|
|
bool bta_gattc_cache_load(tBTA_GATTC_CLCB* p_clcb) {
|
|
char fname[255] = {0};
|
|
bta_gattc_generate_cache_file_name(fname, sizeof(fname),
|
|
p_clcb->p_srcb->server_bda);
|
|
|
|
FILE* fd = fopen(fname, "rb");
|
|
if (!fd) {
|
|
APPL_TRACE_ERROR("%s: can't open GATT cache file %s for reading, error: %s",
|
|
__func__, fname, strerror(errno));
|
|
return false;
|
|
}
|
|
|
|
uint16_t cache_ver = 0;
|
|
tBTA_GATTC_NV_ATTR* attr = NULL;
|
|
bool success = false;
|
|
uint16_t num_attr = 0;
|
|
|
|
if (fread(&cache_ver, sizeof(uint16_t), 1, fd) != 1) {
|
|
APPL_TRACE_ERROR("%s: can't read GATT cache version from: %s", __func__,
|
|
fname);
|
|
goto done;
|
|
}
|
|
|
|
if (cache_ver != GATT_CACHE_VERSION) {
|
|
APPL_TRACE_ERROR("%s: wrong GATT cache version: %s", __func__, fname);
|
|
goto done;
|
|
}
|
|
|
|
if (fread(&num_attr, sizeof(uint16_t), 1, fd) != 1) {
|
|
APPL_TRACE_ERROR("%s: can't read number of GATT attributes: %s", __func__,
|
|
fname);
|
|
goto done;
|
|
}
|
|
|
|
if (num_attr > 0xFFFF) {
|
|
APPL_TRACE_ERROR("%s: more than 0xFFFF GATT attributes: %s", __func__, fname);
|
|
goto done;
|
|
}
|
|
|
|
attr = (tBTA_GATTC_NV_ATTR*)osi_malloc(sizeof(tBTA_GATTC_NV_ATTR) * num_attr);
|
|
|
|
if (fread(attr, sizeof(tBTA_GATTC_NV_ATTR), num_attr, fd) != num_attr) {
|
|
APPL_TRACE_ERROR("%s: can't read GATT attributes: %s", __func__, fname);
|
|
goto done;
|
|
}
|
|
|
|
bta_gattc_rebuild_cache(p_clcb->p_srcb, num_attr, attr);
|
|
|
|
success = true;
|
|
|
|
done:
|
|
osi_free(attr);
|
|
fclose(fd);
|
|
return success;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_gattc_cache_write
|
|
*
|
|
* Description This callout function is executed by GATT when a server
|
|
* cache is available to save.
|
|
*
|
|
* Parameter server_bda: server bd address of this cache belongs to
|
|
* num_attr: number of attribute to be save.
|
|
* attr: pointer to the list of attributes to save.
|
|
* Returns
|
|
*
|
|
******************************************************************************/
|
|
static void bta_gattc_cache_write(const RawAddress& server_bda,
|
|
uint16_t num_attr, tBTA_GATTC_NV_ATTR* attr) {
|
|
char fname[255] = {0};
|
|
bta_gattc_generate_cache_file_name(fname, sizeof(fname), server_bda);
|
|
|
|
FILE* fd = fopen(fname, "wb");
|
|
if (!fd) {
|
|
APPL_TRACE_ERROR("%s: can't open GATT cache file for writing: %s", __func__,
|
|
fname);
|
|
return;
|
|
}
|
|
|
|
uint16_t cache_ver = GATT_CACHE_VERSION;
|
|
if (fwrite(&cache_ver, sizeof(uint16_t), 1, fd) != 1) {
|
|
APPL_TRACE_ERROR("%s: can't write GATT cache version: %s", __func__, fname);
|
|
fclose(fd);
|
|
return;
|
|
}
|
|
|
|
if (fwrite(&num_attr, sizeof(uint16_t), 1, fd) != 1) {
|
|
APPL_TRACE_ERROR("%s: can't write GATT cache attribute count: %s", __func__,
|
|
fname);
|
|
fclose(fd);
|
|
return;
|
|
}
|
|
|
|
if (fwrite(attr, sizeof(tBTA_GATTC_NV_ATTR), num_attr, fd) != num_attr) {
|
|
APPL_TRACE_ERROR("%s: can't write GATT cache attributes: %s", __func__,
|
|
fname);
|
|
fclose(fd);
|
|
return;
|
|
}
|
|
|
|
fclose(fd);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_gattc_cache_reset
|
|
*
|
|
* Description This callout function is executed by GATTC to reset cache in
|
|
* application
|
|
*
|
|
* Parameter server_bda: server bd address of this cache belongs to
|
|
*
|
|
* Returns void.
|
|
*
|
|
******************************************************************************/
|
|
void bta_gattc_cache_reset(const RawAddress& server_bda) {
|
|
BTIF_TRACE_DEBUG("%s", __func__);
|
|
char fname[255] = {0};
|
|
bta_gattc_generate_cache_file_name(fname, sizeof(fname), server_bda);
|
|
unlink(fname);
|
|
}
|