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432 lines
14 KiB
432 lines
14 KiB
/******************************************************************************
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*
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* Copyright 1999-2013 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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#include "bt_target.h"
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#include "bt_utils.h"
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#include "gatt_api.h"
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#include "gatt_int.h"
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#include "osi/include/osi.h"
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#include "srvc_eng_int.h"
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#include "srvc_dis_int.h"
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using base::StringPrintf;
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static void srvc_eng_s_request_cback(uint16_t conn_id, uint32_t trans_id,
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uint8_t op_code, tGATTS_DATA* p_data);
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static void srvc_eng_connect_cback(UNUSED_ATTR tGATT_IF gatt_if,
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const RawAddress& bda, uint16_t conn_id,
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bool connected, tGATT_DISCONN_REASON reason,
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tBT_TRANSPORT transport);
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static void srvc_eng_c_cmpl_cback(uint16_t conn_id, tGATTC_OPTYPE op,
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tGATT_STATUS status,
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tGATT_CL_COMPLETE* p_data);
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static tGATT_CBACK srvc_gatt_cback = {srvc_eng_connect_cback,
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srvc_eng_c_cmpl_cback,
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NULL,
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NULL,
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srvc_eng_s_request_cback,
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NULL,
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NULL,
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NULL,
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NULL};
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/* type for action functions */
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typedef void (*tSRVC_ENG_C_CMPL_ACTION)(tSRVC_CLCB* p_clcb, tGATTC_OPTYPE op,
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tGATT_STATUS status,
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tGATT_CL_COMPLETE* p_data);
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const tSRVC_ENG_C_CMPL_ACTION srvc_eng_c_cmpl_act[SRVC_ID_MAX] = {
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dis_c_cmpl_cback,
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};
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tSRVC_ENG_CB srvc_eng_cb;
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/*******************************************************************************
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*
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* Function srvc_eng_find_conn_id_by_bd_addr
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*
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* Description The function searches all LCB with macthing bd address
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*
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* Returns total number of clcb found.
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*
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******************************************************************************/
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uint16_t srvc_eng_find_conn_id_by_bd_addr(const RawAddress& bda) {
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uint8_t i_clcb;
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tSRVC_CLCB* p_clcb = NULL;
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for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS;
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i_clcb++, p_clcb++) {
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if (p_clcb->in_use && p_clcb->connected && p_clcb->bda == bda) {
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return p_clcb->conn_id;
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}
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}
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return GATT_INVALID_CONN_ID;
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}
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/*******************************************************************************
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*
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* Function srvc_eng_find_clcb_by_bd_addr
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*
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* Description The function searches all LCBs with macthing bd address.
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*
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* Returns Pointer to the found link conenction control block.
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*
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******************************************************************************/
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tSRVC_CLCB* srvc_eng_find_clcb_by_bd_addr(const RawAddress& bda) {
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uint8_t i_clcb;
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tSRVC_CLCB* p_clcb = NULL;
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for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS;
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i_clcb++, p_clcb++) {
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if (p_clcb->in_use && p_clcb->connected && p_clcb->bda == bda) {
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return p_clcb;
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}
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}
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return NULL;
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}
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/*******************************************************************************
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*
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* Function srvc_eng_find_clcb_by_conn_id
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*
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* Description The function searches all LCBs with macthing connection ID.
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*
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* Returns Pointer to the found link conenction control block.
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*
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******************************************************************************/
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tSRVC_CLCB* srvc_eng_find_clcb_by_conn_id(uint16_t conn_id) {
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uint8_t i_clcb;
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tSRVC_CLCB* p_clcb = NULL;
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for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS;
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i_clcb++, p_clcb++) {
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if (p_clcb->in_use && p_clcb->connected && p_clcb->conn_id == conn_id) {
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return p_clcb;
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}
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}
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return NULL;
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}
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/*******************************************************************************
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*
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* Function srvc_eng_find_clcb_by_conn_id
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*
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* Description The function searches all LCBs with macthing connection ID.
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*
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* Returns Pointer to the found link conenction control block.
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*
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******************************************************************************/
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uint8_t srvc_eng_find_clcb_idx_by_conn_id(uint16_t conn_id) {
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uint8_t i_clcb;
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tSRVC_CLCB* p_clcb = NULL;
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for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS;
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i_clcb++, p_clcb++) {
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if (p_clcb->in_use && p_clcb->connected && p_clcb->conn_id == conn_id) {
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return i_clcb;
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}
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}
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return SRVC_MAX_APPS;
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}
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/*******************************************************************************
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*
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* Function srvc_eng_clcb_alloc
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*
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* Description Allocate a GATT profile connection link control block
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*
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* Returns NULL if not found. Otherwise pointer to the connection link
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* block.
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*
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******************************************************************************/
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tSRVC_CLCB* srvc_eng_clcb_alloc(uint16_t conn_id, const RawAddress& bda) {
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uint8_t i_clcb = 0;
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tSRVC_CLCB* p_clcb = NULL;
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for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS;
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i_clcb++, p_clcb++) {
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if (!p_clcb->in_use) {
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p_clcb->in_use = true;
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p_clcb->conn_id = conn_id;
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p_clcb->connected = true;
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p_clcb->bda = bda;
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break;
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}
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}
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return p_clcb;
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}
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/*******************************************************************************
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*
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* Function srvc_eng_clcb_dealloc
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*
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* Description De-allocate a GATT profile connection link control block
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*
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* Returns True the deallocation is successful
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*
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******************************************************************************/
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bool srvc_eng_clcb_dealloc(uint16_t conn_id) {
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uint8_t i_clcb = 0;
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tSRVC_CLCB* p_clcb = NULL;
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for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS;
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i_clcb++, p_clcb++) {
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if (p_clcb->in_use && p_clcb->connected && (p_clcb->conn_id == conn_id)) {
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unsigned j;
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for (j = 0; j < ARRAY_SIZE(p_clcb->dis_value.data_string); j++)
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osi_free(p_clcb->dis_value.data_string[j]);
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memset(p_clcb, 0, sizeof(tSRVC_CLCB));
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return true;
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}
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}
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return false;
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}
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/*******************************************************************************
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* Service Engine Server Attributes Database Read/Read Blob Request process
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******************************************************************************/
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uint8_t srvc_eng_process_read_req(uint8_t clcb_idx, tGATT_READ_REQ* p_data,
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tGATTS_RSP* p_rsp, tGATT_STATUS* p_status) {
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tGATT_STATUS status = GATT_NOT_FOUND;
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uint8_t act = SRVC_ACT_RSP;
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if (p_data->is_long) p_rsp->attr_value.offset = p_data->offset;
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p_rsp->attr_value.handle = p_data->handle;
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if (dis_valid_handle_range(p_data->handle))
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act = dis_read_attr_value(clcb_idx, p_data->handle, &p_rsp->attr_value,
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p_data->is_long, p_status);
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else
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*p_status = status;
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return act;
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}
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/*******************************************************************************
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* Service Engine Server Attributes Database write Request process
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******************************************************************************/
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uint8_t srvc_eng_process_write_req(uint8_t clcb_idx, tGATT_WRITE_REQ* p_data,
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UNUSED_ATTR tGATTS_RSP* p_rsp,
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tGATT_STATUS* p_status) {
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uint8_t act = SRVC_ACT_RSP;
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if (dis_valid_handle_range(p_data->handle)) {
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act = dis_write_attr_value(p_data, p_status);
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} else
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*p_status = GATT_NOT_FOUND;
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return act;
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}
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/*******************************************************************************
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*
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* Function srvc_eng_s_request_cback
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*
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* Description GATT DIS attribute access request callback.
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*
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* Returns void.
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*
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******************************************************************************/
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static void srvc_eng_s_request_cback(uint16_t conn_id, uint32_t trans_id,
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tGATTS_REQ_TYPE type,
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tGATTS_DATA* p_data) {
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tGATT_STATUS status = GATT_INVALID_PDU;
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tGATTS_RSP rsp_msg;
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uint8_t act = SRVC_ACT_IGNORE;
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uint8_t clcb_idx = srvc_eng_find_clcb_idx_by_conn_id(conn_id);
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VLOG(1) << StringPrintf("srvc_eng_s_request_cback : recv type (0x%02x)",
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type);
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memset(&rsp_msg, 0, sizeof(tGATTS_RSP));
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srvc_eng_cb.clcb[clcb_idx].trans_id = trans_id;
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switch (type) {
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case GATTS_REQ_TYPE_READ_CHARACTERISTIC:
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case GATTS_REQ_TYPE_READ_DESCRIPTOR:
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act = srvc_eng_process_read_req(clcb_idx, &p_data->read_req, &rsp_msg,
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&status);
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break;
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case GATTS_REQ_TYPE_WRITE_CHARACTERISTIC:
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case GATTS_REQ_TYPE_WRITE_DESCRIPTOR:
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act = srvc_eng_process_write_req(clcb_idx, &p_data->write_req, &rsp_msg,
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&status);
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if (!p_data->write_req.need_rsp) act = SRVC_ACT_IGNORE;
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break;
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case GATTS_REQ_TYPE_WRITE_EXEC:
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VLOG(1) << "Ignore GATT_REQ_EXEC_WRITE/WRITE_CMD";
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break;
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case GATTS_REQ_TYPE_MTU:
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VLOG(1) << "Get MTU exchange new mtu size: " << p_data->mtu;
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break;
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default:
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VLOG(1) << StringPrintf("Unknown/unexpected LE GAP ATT request: 0x%02x",
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type);
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break;
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}
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srvc_eng_cb.clcb[clcb_idx].trans_id = 0;
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if (act == SRVC_ACT_RSP) GATTS_SendRsp(conn_id, trans_id, status, &rsp_msg);
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}
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/*******************************************************************************
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*
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* Function srvc_eng_c_cmpl_cback
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*
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* Description Client operation complete callback.
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*
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* Returns void
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*
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******************************************************************************/
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static void srvc_eng_c_cmpl_cback(uint16_t conn_id, tGATTC_OPTYPE op,
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tGATT_STATUS status,
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tGATT_CL_COMPLETE* p_data) {
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tSRVC_CLCB* p_clcb = srvc_eng_find_clcb_by_conn_id(conn_id);
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VLOG(1) << StringPrintf(
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"srvc_eng_c_cmpl_cback() - op_code: 0x%02x status: 0x%02x ", op, status);
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if (p_clcb == NULL) {
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LOG(ERROR) << __func__ << " received for unknown connection";
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return;
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}
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if (p_clcb->cur_srvc_id != SRVC_ID_NONE && p_clcb->cur_srvc_id <= SRVC_ID_MAX)
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srvc_eng_c_cmpl_act[p_clcb->cur_srvc_id - 1](p_clcb, op, status, p_data);
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}
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/*******************************************************************************
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*
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* Function srvc_eng_connect_cback
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*
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* Description Gatt profile connection callback.
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*
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* Returns void
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*
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******************************************************************************/
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static void srvc_eng_connect_cback(UNUSED_ATTR tGATT_IF gatt_if,
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const RawAddress& bda, uint16_t conn_id,
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bool connected, tGATT_DISCONN_REASON reason,
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UNUSED_ATTR tBT_TRANSPORT transport) {
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VLOG(1) << __func__ << ": from " << bda
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<< StringPrintf(" connected:%d conn_id=%d", connected, conn_id);
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if (connected) {
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if (srvc_eng_clcb_alloc(conn_id, bda) == NULL) {
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LOG(ERROR) << __func__ << "srvc_eng_connect_cback: no_resource";
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return;
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}
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} else {
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srvc_eng_clcb_dealloc(conn_id);
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}
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}
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/*******************************************************************************
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*
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* Function srvc_eng_c_cmpl_cback
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*
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* Description Client operation complete callback.
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*
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* Returns void
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*
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******************************************************************************/
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bool srvc_eng_request_channel(const RawAddress& remote_bda, uint8_t srvc_id) {
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bool set = true;
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tSRVC_CLCB* p_clcb = srvc_eng_find_clcb_by_bd_addr(remote_bda);
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if (p_clcb == NULL) p_clcb = srvc_eng_clcb_alloc(0, remote_bda);
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if (p_clcb && p_clcb->cur_srvc_id == SRVC_ID_NONE)
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p_clcb->cur_srvc_id = srvc_id;
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else
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set = false;
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return set;
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}
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/*******************************************************************************
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*
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* Function srvc_eng_release_channel
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*
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* Description Client operation complete callback.
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*
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* Returns void
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*
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******************************************************************************/
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void srvc_eng_release_channel(uint16_t conn_id) {
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tSRVC_CLCB* p_clcb = srvc_eng_find_clcb_by_conn_id(conn_id);
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if (p_clcb == NULL) {
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LOG(ERROR) << __func__ << ": invalid connection id " << conn_id;
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return;
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}
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p_clcb->cur_srvc_id = SRVC_ID_NONE;
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/* check pending request */
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GATT_Disconnect(p_clcb->conn_id);
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}
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/*******************************************************************************
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*
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* Function srvc_eng_init
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*
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* Description Initializa the GATT Service engine.
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*
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******************************************************************************/
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tGATT_STATUS srvc_eng_init(void) {
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if (srvc_eng_cb.enabled) {
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LOG(ERROR) << "DIS already initalized";
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} else {
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memset(&srvc_eng_cb, 0, sizeof(tSRVC_ENG_CB));
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/* Create a GATT profile service */
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bluetooth::Uuid app_uuid =
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bluetooth::Uuid::From16Bit(UUID_SERVCLASS_DEVICE_INFO);
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srvc_eng_cb.gatt_if =
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GATT_Register(app_uuid, "GattServiceEngine", &srvc_gatt_cback, false);
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GATT_StartIf(srvc_eng_cb.gatt_if);
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VLOG(1) << "Srvc_Init: gatt_if=" << +srvc_eng_cb.gatt_if;
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srvc_eng_cb.enabled = true;
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dis_cb.dis_read_uuid_idx = 0xff;
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}
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return GATT_SUCCESS;
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}
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void srvc_sr_rsp(uint8_t clcb_idx, tGATT_STATUS st, tGATTS_RSP* p_rsp) {
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if (srvc_eng_cb.clcb[clcb_idx].trans_id != 0) {
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GATTS_SendRsp(srvc_eng_cb.clcb[clcb_idx].conn_id,
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srvc_eng_cb.clcb[clcb_idx].trans_id, st, p_rsp);
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srvc_eng_cb.clcb[clcb_idx].trans_id = 0;
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}
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}
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void srvc_sr_notify(const RawAddress& remote_bda, uint16_t handle, uint16_t len,
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uint8_t* p_value) {
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uint16_t conn_id = srvc_eng_find_conn_id_by_bd_addr(remote_bda);
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if (conn_id != GATT_INVALID_CONN_ID) {
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GATTS_HandleValueNotification(conn_id, handle, len, p_value);
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}
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}
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