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aosp12/system/bt/bta/gatt/bta_gattc_act.cc

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/******************************************************************************
*
* Copyright 2003-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This file contains the GATT client action functions for the state
* machine.
*
******************************************************************************/
#define LOG_TAG "bt_bta_gattc"
#include <base/bind.h>
#include <base/strings/stringprintf.h>
#include "bt_target.h" // Must be first to define build configuration
#include "bta/gatt/bta_gattc_int.h"
#include "bta/hh/bta_hh_int.h"
#include "btif/include/btif_debug_conn.h"
#include "device/include/controller.h"
#include "osi/include/log.h"
#include "osi/include/osi.h" // UNUSED_ATTR
#include "stack/include/btm_ble_api_types.h"
#include "stack/include/btu.h" // do_in_main_thread
#include "stack/include/l2c_api.h"
#include "types/bluetooth/uuid.h"
#include "types/raw_address.h"
using base::StringPrintf;
using bluetooth::Uuid;
/*****************************************************************************
* Constants
****************************************************************************/
static void bta_gattc_conn_cback(tGATT_IF gattc_if, const RawAddress& bda,
uint16_t conn_id, bool connected,
tGATT_DISCONN_REASON reason,
tBT_TRANSPORT transport);
static void bta_gattc_cmpl_cback(uint16_t conn_id, tGATTC_OPTYPE op,
tGATT_STATUS status,
tGATT_CL_COMPLETE* p_data);
static void bta_gattc_cmpl_sendmsg(uint16_t conn_id, tGATTC_OPTYPE op,
tGATT_STATUS status,
tGATT_CL_COMPLETE* p_data);
static void bta_gattc_deregister_cmpl(tBTA_GATTC_RCB* p_clreg);
static void bta_gattc_enc_cmpl_cback(tGATT_IF gattc_if, const RawAddress& bda);
static void bta_gattc_cong_cback(uint16_t conn_id, bool congested);
static void bta_gattc_phy_update_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint8_t tx_phy, uint8_t rx_phy,
tGATT_STATUS status);
static void bta_gattc_conn_update_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint16_t interval, uint16_t latency,
uint16_t timeout, tGATT_STATUS status);
static tGATT_CBACK bta_gattc_cl_cback = {
.p_conn_cb = bta_gattc_conn_cback,
.p_cmpl_cb = bta_gattc_cmpl_cback,
.p_disc_res_cb = bta_gattc_disc_res_cback,
.p_disc_cmpl_cb = bta_gattc_disc_cmpl_cback,
.p_req_cb = nullptr,
.p_enc_cmpl_cb = bta_gattc_enc_cmpl_cback,
.p_congestion_cb = bta_gattc_cong_cback,
.p_phy_update_cb = bta_gattc_phy_update_cback,
.p_conn_update_cb = bta_gattc_conn_update_cback};
/* opcode(tGATTC_OPTYPE) order has to be comply with internal event order */
static uint16_t bta_gattc_opcode_to_int_evt[] = {
/* Skip: GATTC_OPTYPE_NONE */
/* Skip: GATTC_OPTYPE_DISCOVERY */
BTA_GATTC_API_READ_EVT, /* GATTC_OPTYPE_READ */
BTA_GATTC_API_WRITE_EVT, /* GATTC_OPTYPE_WRITE */
BTA_GATTC_API_EXEC_EVT, /* GATTC_OPTYPE_EXE_WRITE */
BTA_GATTC_API_CFG_MTU_EVT /* GATTC_OPTYPE_CONFIG */
};
static const char* bta_gattc_op_code_name[] = {
"Unknown", /* GATTC_OPTYPE_NONE */
"Discovery", /* GATTC_OPTYPE_DISCOVERY */
"Read", /* GATTC_OPTYPE_READ */
"Write", /* GATTC_OPTYPE_WRITE */
"Exec", /* GATTC_OPTYPE_EXE_WRITE */
"Config", /* GATTC_OPTYPE_CONFIG */
"Notification", /* GATTC_OPTYPE_NOTIFICATION */
"Indication" /* GATTC_OPTYPE_INDICATION */
};
/*****************************************************************************
* Action Functions
****************************************************************************/
void bta_gattc_reset_discover_st(tBTA_GATTC_SERV* p_srcb, tGATT_STATUS status);
/** Enables GATTC module */
static void bta_gattc_enable() {
VLOG(1) << __func__;
if (bta_gattc_cb.state == BTA_GATTC_STATE_DISABLED) {
/* initialize control block */
bta_gattc_cb = tBTA_GATTC_CB();
bta_gattc_cb.state = BTA_GATTC_STATE_ENABLED;
} else {
VLOG(1) << "GATTC is already enabled";
}
}
/** Disable GATTC module by cleaning up all active connections and deregister
* all application */
void bta_gattc_disable() {
uint8_t i;
VLOG(1) << __func__;
if (bta_gattc_cb.state != BTA_GATTC_STATE_ENABLED) {
LOG(ERROR) << "not enabled, or disabled in progress";
return;
}
for (i = 0; i < BTA_GATTC_CL_MAX; i++) {
if (!bta_gattc_cb.cl_rcb[i].in_use) continue;
bta_gattc_cb.state = BTA_GATTC_STATE_DISABLING;
/* don't deregister HH GATT IF */
/* HH GATT IF will be deregistered by bta_hh_le_deregister when disable HH */
if (!bta_hh_le_is_hh_gatt_if(bta_gattc_cb.cl_rcb[i].client_if)) {
bta_gattc_deregister(&bta_gattc_cb.cl_rcb[i]);
}
}
/* no registered apps, indicate disable completed */
if (bta_gattc_cb.state != BTA_GATTC_STATE_DISABLING) {
bta_gattc_cb = tBTA_GATTC_CB();
bta_gattc_cb.state = BTA_GATTC_STATE_DISABLED;
}
}
/** start an application interface */
void bta_gattc_start_if(uint8_t client_if) {
if (!bta_gattc_cl_get_regcb(client_if)) {
LOG(ERROR) << "Unable to start app.: Unknown client_if=" << +client_if;
return;
}
GATT_StartIf(client_if);
}
/** Register a GATT client application with BTA */
void bta_gattc_register(const Uuid& app_uuid, tBTA_GATTC_CBACK* p_cback,
BtaAppRegisterCallback cb, bool eatt_suppport) {
tGATT_STATUS status = GATT_NO_RESOURCES;
uint8_t client_if = 0;
VLOG(1) << __func__ << ": state:" << +bta_gattc_cb.state;
/* check if GATTC module is already enabled . Else enable */
if (bta_gattc_cb.state == BTA_GATTC_STATE_DISABLED) {
bta_gattc_enable();
}
/* todo need to check duplicate uuid */
for (uint8_t i = 0; i < BTA_GATTC_CL_MAX; i++) {
if (!bta_gattc_cb.cl_rcb[i].in_use) {
if ((bta_gattc_cb.cl_rcb[i].client_if = GATT_Register(
app_uuid, "GattClient", &bta_gattc_cl_cback, eatt_suppport)) ==
0) {
LOG(ERROR) << "Register with GATT stack failed.";
status = GATT_ERROR;
} else {
bta_gattc_cb.cl_rcb[i].in_use = true;
bta_gattc_cb.cl_rcb[i].p_cback = p_cback;
bta_gattc_cb.cl_rcb[i].app_uuid = app_uuid;
/* BTA use the same client interface as BTE GATT statck */
client_if = bta_gattc_cb.cl_rcb[i].client_if;
do_in_main_thread(FROM_HERE,
base::Bind(&bta_gattc_start_if, client_if));
status = GATT_SUCCESS;
break;
}
}
}
if (!cb.is_null()) cb.Run(client_if, status);
}
/** De-Register a GATT client application with BTA */
void bta_gattc_deregister(tBTA_GATTC_RCB* p_clreg) {
if (!p_clreg) {
LOG(ERROR) << __func__ << ": Deregister Failed unknown client cif";
bta_hh_cleanup_disable(BTA_HH_OK);
return;
}
uint8_t accept_list_size = 0;
if (controller_get_interface()->supports_ble()) {
accept_list_size = controller_get_interface()->get_ble_acceptlist_size();
}
/* remove bg connection associated with this rcb */
for (uint8_t i = 0; i < accept_list_size; i++) {
if (!bta_gattc_cb.bg_track[i].in_use) continue;
if (bta_gattc_cb.bg_track[i].cif_mask & (1 << (p_clreg->client_if - 1))) {
bta_gattc_mark_bg_conn(p_clreg->client_if,
bta_gattc_cb.bg_track[i].remote_bda, false);
GATT_CancelConnect(p_clreg->client_if,
bta_gattc_cb.bg_track[i].remote_bda, false);
}
}
if (p_clreg->num_clcb == 0) {
bta_gattc_deregister_cmpl(p_clreg);
return;
}
/* close all CLCB related to this app */
for (uint8_t i = 0; i < BTA_GATTC_CLCB_MAX; i++) {
if (!bta_gattc_cb.clcb[i].in_use || (bta_gattc_cb.clcb[i].p_rcb != p_clreg))
continue;
p_clreg->dereg_pending = true;
BT_HDR_RIGID buf;
buf.event = BTA_GATTC_API_CLOSE_EVT;
buf.layer_specific = bta_gattc_cb.clcb[i].bta_conn_id;
bta_gattc_close(&bta_gattc_cb.clcb[i], (tBTA_GATTC_DATA*)&buf);
}
}
/** process connect API request */
void bta_gattc_process_api_open(const tBTA_GATTC_DATA* p_msg) {
uint16_t event = ((BT_HDR_RIGID*)p_msg)->event;
tBTA_GATTC_RCB* p_clreg = bta_gattc_cl_get_regcb(p_msg->api_conn.client_if);
if (!p_clreg) {
LOG(ERROR) << __func__
<< ": Failed, unknown client_if=" << +p_msg->api_conn.client_if;
return;
}
if (!p_msg->api_conn.is_direct) {
bta_gattc_init_bk_conn(&p_msg->api_conn, p_clreg);
return;
}
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_alloc_clcb(
p_msg->api_conn.client_if, p_msg->api_conn.remote_bda,
p_msg->api_conn.transport);
if (p_clcb != NULL) {
bta_gattc_sm_execute(p_clcb, event, p_msg);
} else {
LOG(ERROR) << "No resources to open a new connection.";
bta_gattc_send_open_cback(p_clreg, GATT_NO_RESOURCES,
p_msg->api_conn.remote_bda, GATT_INVALID_CONN_ID,
p_msg->api_conn.transport, 0);
}
}
/** process connect API request */
void bta_gattc_process_api_open_cancel(const tBTA_GATTC_DATA* p_msg) {
CHECK(p_msg != nullptr);
uint16_t event = ((BT_HDR_RIGID*)p_msg)->event;
if (!p_msg->api_cancel_conn.is_direct) {
LOG_DEBUG("Cancel GATT client background connection");
bta_gattc_cancel_bk_conn(&p_msg->api_cancel_conn);
return;
}
LOG_DEBUG("Cancel GATT client direct connection");
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_cif(
p_msg->api_cancel_conn.client_if, p_msg->api_cancel_conn.remote_bda,
BT_TRANSPORT_LE);
if (p_clcb != NULL) {
bta_gattc_sm_execute(p_clcb, event, p_msg);
return;
}
LOG(ERROR) << "No such connection need to be cancelled";
tBTA_GATTC_RCB* p_clreg =
bta_gattc_cl_get_regcb(p_msg->api_cancel_conn.client_if);
if (p_clreg && p_clreg->p_cback) {
tBTA_GATTC cb_data;
cb_data.status = GATT_ERROR;
(*p_clreg->p_cback)(BTA_GATTC_CANCEL_OPEN_EVT, &cb_data);
}
}
/** process encryption complete message */
void bta_gattc_process_enc_cmpl(tGATT_IF client_if, const RawAddress& bda) {
tBTA_GATTC_RCB* p_clreg = bta_gattc_cl_get_regcb(client_if);
if (!p_clreg || !p_clreg->p_cback) return;
tBTA_GATTC cb_data;
memset(&cb_data, 0, sizeof(tBTA_GATTC));
cb_data.enc_cmpl.client_if = client_if;
cb_data.enc_cmpl.remote_bda = bda;
(*p_clreg->p_cback)(BTA_GATTC_ENC_CMPL_CB_EVT, &cb_data);
}
void bta_gattc_cancel_open_error(tBTA_GATTC_CLCB* p_clcb,
UNUSED_ATTR const tBTA_GATTC_DATA* p_data) {
tBTA_GATTC cb_data;
cb_data.status = GATT_ERROR;
if (p_clcb && p_clcb->p_rcb && p_clcb->p_rcb->p_cback)
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_CANCEL_OPEN_EVT, &cb_data);
}
void bta_gattc_open_error(tBTA_GATTC_CLCB* p_clcb,
UNUSED_ATTR const tBTA_GATTC_DATA* p_data) {
LOG(ERROR) << "Connection already opened. wrong state";
bta_gattc_send_open_cback(p_clcb->p_rcb, GATT_SUCCESS, p_clcb->bda,
p_clcb->bta_conn_id, p_clcb->transport, 0);
}
void bta_gattc_open_fail(tBTA_GATTC_CLCB* p_clcb,
UNUSED_ATTR const tBTA_GATTC_DATA* p_data) {
LOG(WARNING) << __func__ << ": Cannot establish Connection. conn_id="
<< loghex(p_clcb->bta_conn_id) << ". Return GATT_ERROR("
<< +GATT_ERROR << ")";
bta_gattc_send_open_cback(p_clcb->p_rcb, GATT_ERROR, p_clcb->bda,
p_clcb->bta_conn_id, p_clcb->transport, 0);
/* open failure, remove clcb */
bta_gattc_clcb_dealloc(p_clcb);
}
/** Process API connection function */
void bta_gattc_open(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
tBTA_GATTC_DATA gattc_data;
/* open/hold a connection */
if (!GATT_Connect(p_clcb->p_rcb->client_if, p_data->api_conn.remote_bda, true,
p_data->api_conn.transport, p_data->api_conn.opportunistic,
p_data->api_conn.initiating_phys)) {
LOG(ERROR) << "Connection open failure";
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_OPEN_FAIL_EVT, p_data);
return;
}
/* a connected remote device */
if (GATT_GetConnIdIfConnected(
p_clcb->p_rcb->client_if, p_data->api_conn.remote_bda,
&p_clcb->bta_conn_id, p_data->api_conn.transport)) {
gattc_data.int_conn.hdr.layer_specific = p_clcb->bta_conn_id;
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_CONN_EVT, &gattc_data);
}
/* else wait for the callback event */
}
/** Process API Open for a background connection */
void bta_gattc_init_bk_conn(const tBTA_GATTC_API_OPEN* p_data,
tBTA_GATTC_RCB* p_clreg) {
if (!bta_gattc_mark_bg_conn(p_data->client_if, p_data->remote_bda, true)) {
bta_gattc_send_open_cback(p_clreg, GATT_NO_RESOURCES, p_data->remote_bda,
GATT_INVALID_CONN_ID, BT_TRANSPORT_LE, 0);
return;
}
/* always call open to hold a connection */
if (!GATT_Connect(p_data->client_if, p_data->remote_bda, false,
p_data->transport, false)) {
LOG(ERROR) << __func__
<< " unable to connect to remote bd_addr=" << p_data->remote_bda;
bta_gattc_send_open_cback(p_clreg, GATT_ERROR, p_data->remote_bda,
GATT_INVALID_CONN_ID, BT_TRANSPORT_LE, 0);
return;
}
uint16_t conn_id;
/* if is not a connected remote device */
if (!GATT_GetConnIdIfConnected(p_data->client_if, p_data->remote_bda,
&conn_id, p_data->transport)) {
return;
}
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_alloc_clcb(
p_data->client_if, p_data->remote_bda, BT_TRANSPORT_LE);
if (!p_clcb) return;
tBTA_GATTC_DATA gattc_data;
gattc_data.hdr.layer_specific = p_clcb->bta_conn_id = conn_id;
/* open connection */
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_CONN_EVT,
static_cast<const tBTA_GATTC_DATA*>(&gattc_data));
}
/** Process API Cancel Open for a background connection */
void bta_gattc_cancel_bk_conn(const tBTA_GATTC_API_CANCEL_OPEN* p_data) {
tBTA_GATTC_RCB* p_clreg;
tBTA_GATTC cb_data;
cb_data.status = GATT_ERROR;
/* remove the device from the bg connection mask */
if (bta_gattc_mark_bg_conn(p_data->client_if, p_data->remote_bda, false)) {
if (GATT_CancelConnect(p_data->client_if, p_data->remote_bda, false)) {
cb_data.status = GATT_SUCCESS;
} else {
LOG(ERROR) << __func__ << ": failed";
}
}
p_clreg = bta_gattc_cl_get_regcb(p_data->client_if);
if (p_clreg && p_clreg->p_cback) {
(*p_clreg->p_cback)(BTA_GATTC_CANCEL_OPEN_EVT, &cb_data);
}
}
void bta_gattc_cancel_open_ok(tBTA_GATTC_CLCB* p_clcb,
UNUSED_ATTR const tBTA_GATTC_DATA* p_data) {
tBTA_GATTC cb_data;
if (p_clcb->p_rcb->p_cback) {
cb_data.status = GATT_SUCCESS;
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_CANCEL_OPEN_EVT, &cb_data);
}
bta_gattc_clcb_dealloc(p_clcb);
}
void bta_gattc_cancel_open(tBTA_GATTC_CLCB* p_clcb,
const tBTA_GATTC_DATA* p_data) {
tBTA_GATTC cb_data;
if (GATT_CancelConnect(p_clcb->p_rcb->client_if,
p_data->api_cancel_conn.remote_bda, true)) {
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_CANCEL_OPEN_OK_EVT, p_data);
} else {
if (p_clcb->p_rcb->p_cback) {
cb_data.status = GATT_ERROR;
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_CANCEL_OPEN_EVT, &cb_data);
}
}
}
/** receive connection callback from stack */
void bta_gattc_conn(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
tGATT_IF gatt_if;
VLOG(1) << __func__ << ": server cache state=" << +p_clcb->p_srcb->state;
if (p_data != NULL) {
VLOG(1) << __func__ << ": conn_id=" << loghex(p_data->hdr.layer_specific);
p_clcb->bta_conn_id = p_data->int_conn.hdr.layer_specific;
GATT_GetConnectionInfor(p_data->hdr.layer_specific, &gatt_if, p_clcb->bda,
&p_clcb->transport);
}
p_clcb->p_srcb->connected = true;
if (p_clcb->p_srcb->mtu == 0) p_clcb->p_srcb->mtu = GATT_DEF_BLE_MTU_SIZE;
/* start database cache if needed */
if (p_clcb->p_srcb->gatt_database.IsEmpty() ||
p_clcb->p_srcb->state != BTA_GATTC_SERV_IDLE) {
if (p_clcb->p_srcb->state == BTA_GATTC_SERV_IDLE) {
p_clcb->p_srcb->state = BTA_GATTC_SERV_LOAD;
if (bta_gattc_cache_load(p_clcb->p_srcb)) {
p_clcb->p_srcb->state = BTA_GATTC_SERV_IDLE;
bta_gattc_reset_discover_st(p_clcb->p_srcb, GATT_SUCCESS);
} else {
p_clcb->p_srcb->state = BTA_GATTC_SERV_DISC;
/* cache load failure, start discovery */
bta_gattc_start_discover(p_clcb, NULL);
}
} else /* cache is building */
p_clcb->state = BTA_GATTC_DISCOVER_ST;
}
else {
/* a pending service handle change indication */
if (p_clcb->p_srcb->srvc_hdl_chg) {
p_clcb->p_srcb->srvc_hdl_chg = false;
/* set true to read database hash before service discovery */
if (bta_gattc_is_robust_caching_enabled()) {
p_clcb->p_srcb->srvc_hdl_db_hash = true;
}
/* start discovery */
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_DISCOVER_EVT, NULL);
}
}
if (p_clcb->p_rcb) {
/* there is no RM for GATT */
if (p_clcb->transport == BT_TRANSPORT_BR_EDR)
bta_sys_conn_open(BTA_ID_GATTC, BTA_ALL_APP_ID, p_clcb->bda);
bta_gattc_send_open_cback(p_clcb->p_rcb, GATT_SUCCESS, p_clcb->bda,
p_clcb->bta_conn_id, p_clcb->transport,
p_clcb->p_srcb->mtu);
}
}
/** close a connection */
void bta_gattc_close_fail(tBTA_GATTC_CLCB* p_clcb,
const tBTA_GATTC_DATA* p_data) {
tBTA_GATTC cb_data;
if (p_clcb->p_rcb->p_cback) {
memset(&cb_data, 0, sizeof(tBTA_GATTC));
cb_data.close.client_if = p_clcb->p_rcb->client_if;
cb_data.close.conn_id = p_data->hdr.layer_specific;
cb_data.close.remote_bda = p_clcb->bda;
cb_data.close.reason = BTA_GATT_CONN_NONE;
LOG(WARNING) << __func__ << ": conn_id=" << loghex(cb_data.close.conn_id)
<< ". Returns GATT_ERROR(" << +GATT_ERROR << ").";
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_CLOSE_EVT, &cb_data);
}
}
/** close a GATTC connection */
void bta_gattc_close(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
tBTA_GATTC_CBACK* p_cback = p_clcb->p_rcb->p_cback;
tBTA_GATTC_RCB* p_clreg = p_clcb->p_rcb;
tBTA_GATTC cb_data = {
.close =
{
.client_if = p_clcb->p_rcb->client_if,
.conn_id = p_clcb->bta_conn_id,
.reason = GATT_CONN_OK,
.remote_bda = p_clcb->bda,
.status = GATT_SUCCESS,
},
};
if (p_clcb->transport == BT_TRANSPORT_BR_EDR)
bta_sys_conn_close(BTA_ID_GATTC, BTA_ALL_APP_ID, p_clcb->bda);
bta_gattc_clcb_dealloc(p_clcb);
if (p_data->hdr.event == BTA_GATTC_API_CLOSE_EVT) {
GATT_Disconnect(p_data->hdr.layer_specific);
LOG_DEBUG("Local close event client_if:%hu conn_id:%hu reason:%s",
cb_data.close.client_if, cb_data.close.conn_id,
gatt_disconnection_reason_text(
static_cast<tGATT_DISCONN_REASON>(cb_data.close.reason))
.c_str());
} else if (p_data->hdr.event == BTA_GATTC_INT_DISCONN_EVT) {
cb_data.close.reason = p_data->int_conn.reason;
LOG_DEBUG("Peer close disconnect event client_if:%hu conn_id:%hu reason:%s",
cb_data.close.client_if, cb_data.close.conn_id,
gatt_disconnection_reason_text(
static_cast<tGATT_DISCONN_REASON>(cb_data.close.reason))
.c_str());
}
if (p_cback) (*p_cback)(BTA_GATTC_CLOSE_EVT, &cb_data);
if (p_clreg->num_clcb == 0 && p_clreg->dereg_pending) {
bta_gattc_deregister_cmpl(p_clreg);
}
}
/** when a SRCB finished discovery, tell all related clcb */
void bta_gattc_reset_discover_st(tBTA_GATTC_SERV* p_srcb, tGATT_STATUS status) {
for (uint8_t i = 0; i < BTA_GATTC_CLCB_MAX; i++) {
if (bta_gattc_cb.clcb[i].p_srcb == p_srcb) {
bta_gattc_cb.clcb[i].status = status;
bta_gattc_sm_execute(&bta_gattc_cb.clcb[i], BTA_GATTC_DISCOVER_CMPL_EVT,
NULL);
}
}
}
/** close a GATTC connection while in discovery state */
void bta_gattc_disc_close(tBTA_GATTC_CLCB* p_clcb,
const tBTA_GATTC_DATA* p_data) {
VLOG(1) << __func__
<< ": Discovery cancel conn_id=" << loghex(p_clcb->bta_conn_id);
if (p_clcb->disc_active)
bta_gattc_reset_discover_st(p_clcb->p_srcb, GATT_ERROR);
else
p_clcb->state = BTA_GATTC_CONN_ST;
// This function only gets called as the result of a BTA_GATTC_API_CLOSE_EVT
// while in the BTA_GATTC_DISCOVER_ST state. Once the state changes, the
// connection itself still needs to be closed to resolve the original event.
if (p_clcb->state == BTA_GATTC_CONN_ST) {
VLOG(1) << "State is back to BTA_GATTC_CONN_ST. Trigger connection close";
bta_gattc_close(p_clcb, p_data);
}
}
/** when a SRCB start discovery, tell all related clcb and set the state */
void bta_gattc_set_discover_st(tBTA_GATTC_SERV* p_srcb) {
uint8_t i;
for (i = 0; i < BTA_GATTC_CLCB_MAX; i++) {
if (bta_gattc_cb.clcb[i].p_srcb == p_srcb) {
bta_gattc_cb.clcb[i].status = GATT_SUCCESS;
bta_gattc_cb.clcb[i].state = BTA_GATTC_DISCOVER_ST;
bta_gattc_cb.clcb[i].request_during_discovery =
BTA_GATTC_DISCOVER_REQ_NONE;
}
}
}
/** process service change in discovery state, mark up the auto update flag and
* set status to be discovery cancel for current discovery.
*/
void bta_gattc_restart_discover(tBTA_GATTC_CLCB* p_clcb,
UNUSED_ATTR const tBTA_GATTC_DATA* p_data) {
p_clcb->status = GATT_CANCEL;
p_clcb->auto_update = BTA_GATTC_DISC_WAITING;
}
/** Configure MTU size on the GATT connection */
void bta_gattc_cfg_mtu(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
if (!bta_gattc_enqueue(p_clcb, p_data)) return;
tGATT_STATUS status =
GATTC_ConfigureMTU(p_clcb->bta_conn_id, p_data->api_mtu.mtu);
/* if failed, return callback here */
if (status != GATT_SUCCESS && status != GATT_CMD_STARTED) {
/* Dequeue the data, if it was enqueued */
if (p_clcb->p_q_cmd == p_data) p_clcb->p_q_cmd = NULL;
bta_gattc_cmpl_sendmsg(p_clcb->bta_conn_id, GATTC_OPTYPE_CONFIG, status,
NULL);
}
}
void bta_gattc_start_discover_internal(tBTA_GATTC_CLCB* p_clcb) {
if (p_clcb->transport == BT_TRANSPORT_LE)
L2CA_EnableUpdateBleConnParams(p_clcb->p_srcb->server_bda, false);
bta_gattc_init_cache(p_clcb->p_srcb);
p_clcb->status = bta_gattc_discover_pri_service(
p_clcb->bta_conn_id, p_clcb->p_srcb, GATT_DISC_SRVC_ALL);
if (p_clcb->status != GATT_SUCCESS) {
LOG(ERROR) << "discovery on server failed";
bta_gattc_reset_discover_st(p_clcb->p_srcb, p_clcb->status);
} else
p_clcb->disc_active = true;
}
/** Start a discovery on server */
void bta_gattc_start_discover(tBTA_GATTC_CLCB* p_clcb,
UNUSED_ATTR const tBTA_GATTC_DATA* p_data) {
VLOG(1) << __func__ << ": conn_id:" << loghex(p_clcb->bta_conn_id)
<< " p_clcb->p_srcb->state:" << +p_clcb->p_srcb->state;
if (((p_clcb->p_q_cmd == NULL ||
p_clcb->auto_update == BTA_GATTC_REQ_WAITING) &&
p_clcb->p_srcb->state == BTA_GATTC_SERV_IDLE) ||
p_clcb->p_srcb->state == BTA_GATTC_SERV_DISC)
/* no pending operation, start discovery right away */
{
p_clcb->auto_update = BTA_GATTC_NO_SCHEDULE;
if (p_clcb->p_srcb != NULL) {
/* set all srcb related clcb into discovery ST */
bta_gattc_set_discover_st(p_clcb->p_srcb);
/* clear the service change mask */
p_clcb->p_srcb->srvc_hdl_chg = false;
p_clcb->p_srcb->update_count = 0;
p_clcb->p_srcb->state = BTA_GATTC_SERV_DISC_ACT;
/* read db hash if db hash characteristic exists */
if (bta_gattc_is_robust_caching_enabled() &&
p_clcb->p_srcb->srvc_hdl_db_hash && bta_gattc_read_db_hash(p_clcb)) {
LOG(INFO) << __func__
<< ": pending service discovery, read db hash first";
p_clcb->p_srcb->srvc_hdl_db_hash = false;
return;
}
bta_gattc_start_discover_internal(p_clcb);
} else {
LOG(ERROR) << "unknown device, can not start discovery";
}
}
/* pending operation, wait until it finishes */
else {
p_clcb->auto_update = BTA_GATTC_DISC_WAITING;
if (p_clcb->p_srcb->state == BTA_GATTC_SERV_IDLE)
p_clcb->state = BTA_GATTC_CONN_ST; /* set clcb state */
}
}
/** discovery on server is finished */
void bta_gattc_disc_cmpl(tBTA_GATTC_CLCB* p_clcb,
UNUSED_ATTR const tBTA_GATTC_DATA* p_data) {
const tBTA_GATTC_DATA* p_q_cmd = p_clcb->p_q_cmd;
VLOG(1) << __func__ << ": conn_id=" << loghex(p_clcb->bta_conn_id);
if (p_clcb->transport == BT_TRANSPORT_LE)
L2CA_EnableUpdateBleConnParams(p_clcb->p_srcb->server_bda, true);
p_clcb->p_srcb->state = BTA_GATTC_SERV_IDLE;
p_clcb->disc_active = false;
if (p_clcb->status != GATT_SUCCESS) {
/* clean up cache */
if (p_clcb->p_srcb) {
p_clcb->p_srcb->gatt_database.Clear();
}
/* used to reset cache in application */
bta_gattc_cache_reset(p_clcb->p_srcb->server_bda);
}
if (p_clcb->p_srcb) {
p_clcb->p_srcb->pending_discovery.Clear();
}
if (p_clcb->auto_update == BTA_GATTC_DISC_WAITING) {
/* start discovery again */
p_clcb->auto_update = BTA_GATTC_REQ_WAITING;
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_DISCOVER_EVT, NULL);
}
/* get any queued command to proceed */
else if (p_q_cmd != NULL) {
p_clcb->p_q_cmd = NULL;
/* execute pending operation of link block still present */
if (L2CA_IsLinkEstablished(p_clcb->p_srcb->server_bda, p_clcb->transport)) {
bta_gattc_sm_execute(p_clcb, p_q_cmd->hdr.event, p_q_cmd);
}
/* if the command executed requeued the cmd, we don't
* want to free the underlying buffer that's being
* referenced by p_clcb->p_q_cmd
*/
if (p_q_cmd != p_clcb->p_q_cmd) osi_free_and_reset((void**)&p_q_cmd);
}
if (p_clcb->p_rcb->p_cback) {
tBTA_GATTC bta_gattc;
bta_gattc.remote_bda = p_clcb->p_srcb->server_bda;
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_SRVC_DISC_DONE_EVT, &bta_gattc);
}
}
/** Read an attribute */
void bta_gattc_read(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
if (!bta_gattc_enqueue(p_clcb, p_data)) return;
tGATT_STATUS status;
if (p_data->api_read.handle != 0) {
tGATT_READ_PARAM read_param;
memset(&read_param, 0, sizeof(tGATT_READ_PARAM));
read_param.by_handle.handle = p_data->api_read.handle;
read_param.by_handle.auth_req = p_data->api_read.auth_req;
status = GATTC_Read(p_clcb->bta_conn_id, GATT_READ_BY_HANDLE, &read_param);
} else {
tGATT_READ_PARAM read_param;
memset(&read_param, 0, sizeof(tGATT_READ_BY_TYPE));
read_param.char_type.s_handle = p_data->api_read.s_handle;
read_param.char_type.e_handle = p_data->api_read.e_handle;
read_param.char_type.uuid = p_data->api_read.uuid;
read_param.char_type.auth_req = p_data->api_read.auth_req;
status = GATTC_Read(p_clcb->bta_conn_id, GATT_READ_BY_TYPE, &read_param);
}
/* read fail */
if (status != GATT_SUCCESS) {
/* Dequeue the data, if it was enqueued */
if (p_clcb->p_q_cmd == p_data) p_clcb->p_q_cmd = NULL;
bta_gattc_cmpl_sendmsg(p_clcb->bta_conn_id, GATTC_OPTYPE_READ, status,
NULL);
}
}
/** read multiple */
void bta_gattc_read_multi(tBTA_GATTC_CLCB* p_clcb,
const tBTA_GATTC_DATA* p_data) {
if (!bta_gattc_enqueue(p_clcb, p_data)) return;
tGATT_READ_PARAM read_param;
memset(&read_param, 0, sizeof(tGATT_READ_PARAM));
read_param.read_multiple.num_handles = p_data->api_read_multi.num_attr;
read_param.read_multiple.auth_req = p_data->api_read_multi.auth_req;
memcpy(&read_param.read_multiple.handles, p_data->api_read_multi.handles,
sizeof(uint16_t) * p_data->api_read_multi.num_attr);
tGATT_STATUS status =
GATTC_Read(p_clcb->bta_conn_id, GATT_READ_MULTIPLE, &read_param);
/* read fail */
if (status != GATT_SUCCESS) {
/* Dequeue the data, if it was enqueued */
if (p_clcb->p_q_cmd == p_data) p_clcb->p_q_cmd = NULL;
bta_gattc_cmpl_sendmsg(p_clcb->bta_conn_id, GATTC_OPTYPE_READ, status,
NULL);
}
}
/** Write an attribute */
void bta_gattc_write(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
if (!bta_gattc_enqueue(p_clcb, p_data)) return;
tGATT_STATUS status = GATT_SUCCESS;
tGATT_VALUE attr;
attr.conn_id = p_clcb->bta_conn_id;
attr.handle = p_data->api_write.handle;
attr.offset = p_data->api_write.offset;
attr.len = p_data->api_write.len;
attr.auth_req = p_data->api_write.auth_req;
if (p_data->api_write.p_value)
memcpy(attr.value, p_data->api_write.p_value, p_data->api_write.len);
status =
GATTC_Write(p_clcb->bta_conn_id, p_data->api_write.write_type, &attr);
/* write fail */
if (status != GATT_SUCCESS) {
/* Dequeue the data, if it was enqueued */
if (p_clcb->p_q_cmd == p_data) p_clcb->p_q_cmd = NULL;
bta_gattc_cmpl_sendmsg(p_clcb->bta_conn_id, GATTC_OPTYPE_WRITE, status,
NULL);
}
}
/** send execute write */
void bta_gattc_execute(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
if (!bta_gattc_enqueue(p_clcb, p_data)) return;
tGATT_STATUS status =
GATTC_ExecuteWrite(p_clcb->bta_conn_id, p_data->api_exec.is_execute);
if (status != GATT_SUCCESS) {
/* Dequeue the data, if it was enqueued */
if (p_clcb->p_q_cmd == p_data) p_clcb->p_q_cmd = NULL;
bta_gattc_cmpl_sendmsg(p_clcb->bta_conn_id, GATTC_OPTYPE_EXE_WRITE, status,
NULL);
}
}
/** send handle value confirmation */
void bta_gattc_confirm(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
uint16_t cid = p_data->api_confirm.cid;
if (GATTC_SendHandleValueConfirm(p_data->api_confirm.hdr.layer_specific,
cid) != GATT_SUCCESS) {
LOG(ERROR) << __func__ << ": to cid=" << loghex(cid) << " failed";
} else {
/* if over BR_EDR, inform PM for mode change */
if (p_clcb->transport == BT_TRANSPORT_BR_EDR) {
bta_sys_busy(BTA_ID_GATTC, BTA_ALL_APP_ID, p_clcb->bda);
bta_sys_idle(BTA_ID_GATTC, BTA_ALL_APP_ID, p_clcb->bda);
}
}
}
/** read complete */
static void bta_gattc_read_cmpl(tBTA_GATTC_CLCB* p_clcb,
const tBTA_GATTC_OP_CMPL* p_data) {
GATT_READ_OP_CB cb = p_clcb->p_q_cmd->api_read.read_cb;
void* my_cb_data = p_clcb->p_q_cmd->api_read.read_cb_data;
/* if it was read by handle, return the handle requested, if read by UUID, use
* handle returned from remote
*/
uint16_t handle = p_clcb->p_q_cmd->api_read.handle;
if (handle == 0) handle = p_data->p_cmpl->att_value.handle;
osi_free_and_reset((void**)&p_clcb->p_q_cmd);
if (cb) {
cb(p_clcb->bta_conn_id, p_data->status, handle,
p_data->p_cmpl->att_value.len, p_data->p_cmpl->att_value.value,
my_cb_data);
}
}
/** write complete */
static void bta_gattc_write_cmpl(tBTA_GATTC_CLCB* p_clcb,
const tBTA_GATTC_OP_CMPL* p_data) {
GATT_WRITE_OP_CB cb = p_clcb->p_q_cmd->api_write.write_cb;
void* my_cb_data = p_clcb->p_q_cmd->api_write.write_cb_data;
osi_free_and_reset((void**)&p_clcb->p_q_cmd);
if (cb) {
cb(p_clcb->bta_conn_id, p_data->status, p_data->p_cmpl->att_value.handle,
my_cb_data);
}
}
/** execute write complete */
static void bta_gattc_exec_cmpl(tBTA_GATTC_CLCB* p_clcb,
const tBTA_GATTC_OP_CMPL* p_data) {
tBTA_GATTC cb_data;
osi_free_and_reset((void**)&p_clcb->p_q_cmd);
p_clcb->status = GATT_SUCCESS;
/* execute complete, callback */
cb_data.exec_cmpl.conn_id = p_clcb->bta_conn_id;
cb_data.exec_cmpl.status = p_data->status;
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_EXEC_EVT, &cb_data);
}
/** configure MTU operation complete */
static void bta_gattc_cfg_mtu_cmpl(tBTA_GATTC_CLCB* p_clcb,
const tBTA_GATTC_OP_CMPL* p_data) {
GATT_CONFIGURE_MTU_OP_CB cb = p_clcb->p_q_cmd->api_mtu.mtu_cb;
void* my_cb_data = p_clcb->p_q_cmd->api_mtu.mtu_cb_data;
tBTA_GATTC cb_data;
osi_free_and_reset((void**)&p_clcb->p_q_cmd);
if (p_data->p_cmpl && p_data->status == GATT_SUCCESS)
p_clcb->p_srcb->mtu = p_data->p_cmpl->mtu;
/* configure MTU complete, callback */
p_clcb->status = p_data->status;
cb_data.cfg_mtu.conn_id = p_clcb->bta_conn_id;
cb_data.cfg_mtu.status = p_data->status;
cb_data.cfg_mtu.mtu = p_clcb->p_srcb->mtu;
if (cb) {
cb(p_clcb->bta_conn_id, p_data->status, my_cb_data);
}
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_CFG_MTU_EVT, &cb_data);
}
/** operation completed */
void bta_gattc_op_cmpl(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
if (p_clcb->p_q_cmd == NULL) {
LOG_ERROR("No pending command gatt client command");
return;
}
const tGATTC_OPTYPE op = p_data->op_cmpl.op_code;
switch (op) {
case GATTC_OPTYPE_READ:
case GATTC_OPTYPE_WRITE:
case GATTC_OPTYPE_EXE_WRITE:
case GATTC_OPTYPE_CONFIG:
break;
case GATTC_OPTYPE_NONE:
case GATTC_OPTYPE_DISCOVERY:
case GATTC_OPTYPE_NOTIFICATION:
case GATTC_OPTYPE_INDICATION:
default:
LOG(ERROR) << "unexpected operation, ignored";
return;
}
if (p_clcb->p_q_cmd->hdr.event !=
bta_gattc_opcode_to_int_evt[op - GATTC_OPTYPE_READ]) {
uint8_t mapped_op =
p_clcb->p_q_cmd->hdr.event - BTA_GATTC_API_READ_EVT + GATTC_OPTYPE_READ;
if (mapped_op > GATTC_OPTYPE_INDICATION) mapped_op = 0;
LOG(ERROR) << StringPrintf(
"expect op:(%s :0x%04x), receive unexpected operation (%s).",
bta_gattc_op_code_name[mapped_op], p_clcb->p_q_cmd->hdr.event,
bta_gattc_op_code_name[op]);
return;
}
/* Except for MTU configuration, discard responses if service change
* indication is received before operation completed
*/
if (p_clcb->auto_update == BTA_GATTC_DISC_WAITING &&
p_clcb->p_srcb->srvc_hdl_chg && op != GATTC_OPTYPE_CONFIG) {
VLOG(1) << "Discard all responses when service change indication is "
"received.";
// TODO Fix constness
const_cast<tBTA_GATTC_DATA*>(p_data)->op_cmpl.status = GATT_ERROR;
}
/* service handle change void the response, discard it */
if (op == GATTC_OPTYPE_READ)
bta_gattc_read_cmpl(p_clcb, &p_data->op_cmpl);
else if (op == GATTC_OPTYPE_WRITE)
bta_gattc_write_cmpl(p_clcb, &p_data->op_cmpl);
else if (op == GATTC_OPTYPE_EXE_WRITE)
bta_gattc_exec_cmpl(p_clcb, &p_data->op_cmpl);
else if (op == GATTC_OPTYPE_CONFIG)
bta_gattc_cfg_mtu_cmpl(p_clcb, &p_data->op_cmpl);
// If receive DATABASE_OUT_OF_SYNC error code, bta_gattc should start service
// discovery immediately
if (bta_gattc_is_robust_caching_enabled() &&
p_data->op_cmpl.status == GATT_DATABASE_OUT_OF_SYNC) {
LOG(INFO) << __func__ << ": DATABASE_OUT_OF_SYNC, re-discover service";
p_clcb->auto_update = BTA_GATTC_REQ_WAITING;
/* request read db hash first */
p_clcb->p_srcb->srvc_hdl_db_hash = true;
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_DISCOVER_EVT, NULL);
return;
}
if (p_clcb->auto_update == BTA_GATTC_DISC_WAITING) {
p_clcb->auto_update = BTA_GATTC_REQ_WAITING;
/* request read db hash first */
if (bta_gattc_is_robust_caching_enabled()) {
p_clcb->p_srcb->srvc_hdl_db_hash = true;
}
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_DISCOVER_EVT, NULL);
}
}
/** start a search in the local server cache */
void bta_gattc_search(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
tGATT_STATUS status = GATT_INTERNAL_ERROR;
tBTA_GATTC cb_data;
VLOG(1) << __func__ << ": conn_id=" << loghex(p_clcb->bta_conn_id);
if (p_clcb->p_srcb && !p_clcb->p_srcb->gatt_database.IsEmpty()) {
status = GATT_SUCCESS;
/* search the local cache of a server device */
bta_gattc_search_service(p_clcb, p_data->api_search.p_srvc_uuid);
}
cb_data.search_cmpl.status = status;
cb_data.search_cmpl.conn_id = p_clcb->bta_conn_id;
/* end of search or no server cache available */
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_SEARCH_CMPL_EVT, &cb_data);
}
/** enqueue a command into control block, usually because discovery operation is
* busy */
void bta_gattc_q_cmd(tBTA_GATTC_CLCB* p_clcb, const tBTA_GATTC_DATA* p_data) {
bta_gattc_enqueue(p_clcb, p_data);
}
/** report API call failure back to apps */
void bta_gattc_fail(tBTA_GATTC_CLCB* p_clcb,
UNUSED_ATTR const tBTA_GATTC_DATA* p_data) {
if (p_clcb->status == GATT_SUCCESS) {
LOG(ERROR) << "operation not supported at current state " << +p_clcb->state;
}
}
/* De-Register a GATT client application with BTA completed */
static void bta_gattc_deregister_cmpl(tBTA_GATTC_RCB* p_clreg) {
tGATT_IF client_if = p_clreg->client_if;
tBTA_GATTC cb_data;
tBTA_GATTC_CBACK* p_cback = p_clreg->p_cback;
memset(&cb_data, 0, sizeof(tBTA_GATTC));
GATT_Deregister(p_clreg->client_if);
memset(p_clreg, 0, sizeof(tBTA_GATTC_RCB));
cb_data.reg_oper.client_if = client_if;
cb_data.reg_oper.status = GATT_SUCCESS;
if (p_cback) /* callback with de-register event */
(*p_cback)(BTA_GATTC_DEREG_EVT, &cb_data);
if (bta_gattc_num_reg_app() == 0 &&
bta_gattc_cb.state == BTA_GATTC_STATE_DISABLING) {
bta_gattc_cb.state = BTA_GATTC_STATE_DISABLED;
}
}
/** callback functions to GATT client stack */
static void bta_gattc_conn_cback(tGATT_IF gattc_if, const RawAddress& bdaddr,
uint16_t conn_id, bool connected,
tGATT_DISCONN_REASON reason,
tBT_TRANSPORT transport) {
if (connected) {
LOG_INFO("Connected att_id:%hhu transport:%s reason:%s", gattc_if,
bt_transport_text(transport).c_str(),
gatt_disconnection_reason_text(reason).c_str());
btif_debug_conn_state(bdaddr, BTIF_DEBUG_CONNECTED, GATT_CONN_UNKNOWN);
} else {
LOG_INFO("Disconnected att_id:%hhu transport:%s reason:%s", gattc_if,
bt_transport_text(transport).c_str(),
gatt_disconnection_reason_text(reason).c_str());
btif_debug_conn_state(bdaddr, BTIF_DEBUG_DISCONNECTED, GATT_CONN_UNKNOWN);
}
tBTA_GATTC_DATA* p_buf =
(tBTA_GATTC_DATA*)osi_calloc(sizeof(tBTA_GATTC_DATA));
p_buf->int_conn.hdr.event =
connected ? BTA_GATTC_INT_CONN_EVT : BTA_GATTC_INT_DISCONN_EVT;
p_buf->int_conn.hdr.layer_specific = conn_id;
p_buf->int_conn.client_if = gattc_if;
p_buf->int_conn.role = L2CA_GetBleConnRole(bdaddr);
p_buf->int_conn.reason = reason;
p_buf->int_conn.transport = transport;
p_buf->int_conn.remote_bda = bdaddr;
bta_sys_sendmsg(p_buf);
}
/** encryption complete callback function to GATT client stack */
static void bta_gattc_enc_cmpl_cback(tGATT_IF gattc_if, const RawAddress& bda) {
tBTA_GATTC_CLCB* p_clcb =
bta_gattc_find_clcb_by_cif(gattc_if, bda, BT_TRANSPORT_LE);
if (p_clcb == NULL) return;
/* filter this event just for BTA HH LE GATT client,
* In the future, if we want to enable encryption complete event
* for all GATT clients, we can remove this code
*/
if (!bta_hh_le_is_hh_gatt_if(gattc_if)) {
return;
}
VLOG(1) << __func__ << ": cif:" << +gattc_if;
do_in_main_thread(FROM_HERE,
base::Bind(&bta_gattc_process_enc_cmpl, gattc_if, bda));
}
/** process refresh API to delete cache and start a new discovery if currently
* connected */
void bta_gattc_process_api_refresh(const RawAddress& remote_bda) {
tBTA_GATTC_SERV* p_srvc_cb = bta_gattc_find_srvr_cache(remote_bda);
if (p_srvc_cb) {
/* try to find a CLCB */
if (p_srvc_cb->connected && p_srvc_cb->num_clcb != 0) {
bool found = false;
tBTA_GATTC_CLCB* p_clcb = &bta_gattc_cb.clcb[0];
for (uint8_t i = 0; i < BTA_GATTC_CLCB_MAX; i++, p_clcb++) {
if (p_clcb->in_use && p_clcb->p_srcb == p_srvc_cb) {
found = true;
break;
}
}
if (found) {
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_DISCOVER_EVT, NULL);
return;
}
}
/* in all other cases, mark it and delete the cache */
p_srvc_cb->gatt_database.Clear();
}
/* used to reset cache in application */
bta_gattc_cache_reset(remote_bda);
}
/** process service change indication */
bool bta_gattc_process_srvc_chg_ind(uint16_t conn_id, tBTA_GATTC_RCB* p_clrcb,
tBTA_GATTC_SERV* p_srcb,
tBTA_GATTC_CLCB* p_clcb,
tBTA_GATTC_NOTIFY* p_notify,
tGATT_VALUE* att_value) {
Uuid gattp_uuid = Uuid::From16Bit(UUID_SERVCLASS_GATT_SERVER);
Uuid srvc_chg_uuid = Uuid::From16Bit(GATT_UUID_GATT_SRV_CHGD);
if (p_srcb->gatt_database.IsEmpty() && p_srcb->state == BTA_GATTC_SERV_IDLE) {
bta_gattc_cache_load(p_srcb);
}
const gatt::Characteristic* p_char =
bta_gattc_get_characteristic_srcb(p_srcb, p_notify->handle);
if (!p_char) return false;
const gatt::Service* p_svc =
bta_gattc_get_service_for_handle_srcb(p_srcb, p_char->value_handle);
if (!p_svc || p_svc->uuid != gattp_uuid || p_char->uuid != srvc_chg_uuid) {
return false;
}
if (att_value->len != BTA_GATTC_SERVICE_CHANGED_LEN) {
LOG(ERROR) << __func__
<< ": received malformed service changed indication, skipping";
return false;
}
uint8_t* p = att_value->value;
uint16_t s_handle = ((uint16_t)(*(p)) + (((uint16_t)(*(p + 1))) << 8));
uint16_t e_handle = ((uint16_t)(*(p + 2)) + (((uint16_t)(*(p + 3))) << 8));
LOG(ERROR) << __func__ << ": service changed s_handle=" << loghex(s_handle)
<< ", e_handle=" << loghex(e_handle);
/* mark service handle change pending */
p_srcb->srvc_hdl_chg = true;
/* clear up all notification/indication registration */
bta_gattc_clear_notif_registration(p_srcb, conn_id, s_handle, e_handle);
/* service change indication all received, do discovery update */
if (++p_srcb->update_count == bta_gattc_num_reg_app()) {
/* not an opened connection; or connection busy */
/* search for first available clcb and start discovery */
if (p_clcb == NULL || (p_clcb && p_clcb->p_q_cmd != NULL)) {
for (size_t i = 0; i < BTA_GATTC_CLCB_MAX; i++) {
if (bta_gattc_cb.clcb[i].in_use &&
bta_gattc_cb.clcb[i].p_srcb == p_srcb &&
bta_gattc_cb.clcb[i].p_q_cmd == NULL) {
p_clcb = &bta_gattc_cb.clcb[i];
break;
}
}
}
/* send confirmation here if this is an indication, it should always be */
GATTC_SendHandleValueConfirm(conn_id, p_notify->cid);
/* if connection available, refresh cache by doing discovery now */
if (p_clcb) {
/* request read db hash first */
if (bta_gattc_is_robust_caching_enabled()) {
p_srcb->srvc_hdl_db_hash = true;
}
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_DISCOVER_EVT, NULL);
}
}
/* notify applicationf or service change */
if (p_clrcb->p_cback) {
tBTA_GATTC bta_gattc;
bta_gattc.service_changed.remote_bda = p_srcb->server_bda;
bta_gattc.service_changed.conn_id = conn_id;
(*p_clrcb->p_cback)(BTA_GATTC_SRVC_CHG_EVT, &bta_gattc);
}
return true;
}
/** process all non-service change indication/notification */
void bta_gattc_proc_other_indication(tBTA_GATTC_CLCB* p_clcb, uint8_t op,
tGATT_CL_COMPLETE* p_data,
tBTA_GATTC_NOTIFY* p_notify) {
VLOG(1) << __func__
<< StringPrintf(
": check p_data->att_value.handle=%d p_data->handle=%d",
p_data->att_value.handle, p_data->handle);
VLOG(1) << "is_notify " << p_notify->is_notify;
p_notify->is_notify = (op == GATTC_OPTYPE_INDICATION) ? false : true;
p_notify->len = p_data->att_value.len;
p_notify->bda = p_clcb->bda;
memcpy(p_notify->value, p_data->att_value.value, p_data->att_value.len);
p_notify->conn_id = p_clcb->bta_conn_id;
if (p_clcb->p_rcb->p_cback) {
tBTA_GATTC bta_gattc;
bta_gattc.notify = *p_notify;
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_NOTIF_EVT, &bta_gattc);
}
}
/** process indication/notification */
void bta_gattc_process_indicate(uint16_t conn_id, tGATTC_OPTYPE op,
tGATT_CL_COMPLETE* p_data) {
uint16_t handle = p_data->att_value.handle;
tBTA_GATTC_NOTIFY notify;
RawAddress remote_bda;
tGATT_IF gatt_if;
tBT_TRANSPORT transport;
if (!GATT_GetConnectionInfor(conn_id, &gatt_if, remote_bda, &transport)) {
LOG(ERROR) << __func__ << ": indication/notif for unknown app";
if (op == GATTC_OPTYPE_INDICATION)
GATTC_SendHandleValueConfirm(conn_id, p_data->cid);
return;
}
tBTA_GATTC_RCB* p_clrcb = bta_gattc_cl_get_regcb(gatt_if);
if (p_clrcb == NULL) {
LOG(ERROR) << __func__ << ": indication/notif for unregistered app";
if (op == GATTC_OPTYPE_INDICATION)
GATTC_SendHandleValueConfirm(conn_id, p_data->cid);
return;
}
tBTA_GATTC_SERV* p_srcb = bta_gattc_find_srcb(remote_bda);
if (p_srcb == NULL) {
LOG(ERROR) << __func__ << ": indication/notif for unknown device, ignore";
if (op == GATTC_OPTYPE_INDICATION)
GATTC_SendHandleValueConfirm(conn_id, p_data->cid);
return;
}
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
notify.handle = handle;
notify.cid = p_data->cid;
/* if service change indication/notification, don't forward to application */
if (bta_gattc_process_srvc_chg_ind(conn_id, p_clrcb, p_srcb, p_clcb, &notify,
&p_data->att_value))
return;
/* if app registered for the notification */
if (bta_gattc_check_notif_registry(p_clrcb, p_srcb, &notify)) {
/* connection not open yet */
if (p_clcb == NULL) {
p_clcb = bta_gattc_clcb_alloc(gatt_if, remote_bda, transport);
if (p_clcb == NULL) {
LOG(ERROR) << "No resources";
return;
}
p_clcb->bta_conn_id = conn_id;
p_clcb->transport = transport;
bta_gattc_sm_execute(p_clcb, BTA_GATTC_INT_CONN_EVT, NULL);
}
if (p_clcb != NULL)
bta_gattc_proc_other_indication(p_clcb, op, p_data, &notify);
}
/* no one intersted and need ack? */
else if (op == GATTC_OPTYPE_INDICATION) {
VLOG(1) << __func__ << " no one interested, ack now";
GATTC_SendHandleValueConfirm(conn_id, p_data->cid);
}
}
/** client operation complete callback register with BTE GATT */
static void bta_gattc_cmpl_cback(uint16_t conn_id, tGATTC_OPTYPE op,
tGATT_STATUS status,
tGATT_CL_COMPLETE* p_data) {
VLOG(1) << __func__ << ": conn_id:" << +conn_id << " op:" << +op
<< " status:" << +status;
/* notification and indication processed right away */
if (op == GATTC_OPTYPE_NOTIFICATION || op == GATTC_OPTYPE_INDICATION) {
bta_gattc_process_indicate(conn_id, op, p_data);
return;
}
/* for all other operation, not expected if w/o connection */
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
if (!p_clcb) {
LOG(ERROR) << __func__ << ": unknown conn_id=" << loghex(conn_id)
<< " ignore data";
return;
}
/* if over BR_EDR, inform PM for mode change */
if (p_clcb->transport == BT_TRANSPORT_BR_EDR) {
bta_sys_busy(BTA_ID_GATTC, BTA_ALL_APP_ID, p_clcb->bda);
bta_sys_idle(BTA_ID_GATTC, BTA_ALL_APP_ID, p_clcb->bda);
}
bta_gattc_cmpl_sendmsg(conn_id, op, status, p_data);
}
/** client operation complete send message */
static void bta_gattc_cmpl_sendmsg(uint16_t conn_id, tGATTC_OPTYPE op,
tGATT_STATUS status,
tGATT_CL_COMPLETE* p_data) {
const size_t len = sizeof(tBTA_GATTC_OP_CMPL) + sizeof(tGATT_CL_COMPLETE);
tBTA_GATTC_OP_CMPL* p_buf = (tBTA_GATTC_OP_CMPL*)osi_calloc(len);
p_buf->hdr.event = BTA_GATTC_OP_CMPL_EVT;
p_buf->hdr.layer_specific = conn_id;
p_buf->status = status;
p_buf->op_code = op;
if (p_data) {
p_buf->p_cmpl = (tGATT_CL_COMPLETE*)(p_buf + 1);
memcpy(p_buf->p_cmpl, p_data, sizeof(tGATT_CL_COMPLETE));
}
bta_sys_sendmsg(p_buf);
}
/** congestion callback for BTA GATT client */
static void bta_gattc_cong_cback(uint16_t conn_id, bool congested) {
tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);
if (!p_clcb || !p_clcb->p_rcb->p_cback) return;
tBTA_GATTC cb_data;
cb_data.congest.conn_id = conn_id;
cb_data.congest.congested = congested;
(*p_clcb->p_rcb->p_cback)(BTA_GATTC_CONGEST_EVT, &cb_data);
}
static void bta_gattc_phy_update_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint8_t tx_phy, uint8_t rx_phy,
tGATT_STATUS status) {
tBTA_GATTC_RCB* p_clreg = bta_gattc_cl_get_regcb(gatt_if);
if (!p_clreg || !p_clreg->p_cback) {
LOG(ERROR) << __func__ << ": client_if=" << +gatt_if << " not found";
return;
}
tBTA_GATTC cb_data;
cb_data.phy_update.conn_id = conn_id;
cb_data.phy_update.server_if = gatt_if;
cb_data.phy_update.tx_phy = tx_phy;
cb_data.phy_update.rx_phy = rx_phy;
cb_data.phy_update.status = status;
(*p_clreg->p_cback)(BTA_GATTC_PHY_UPDATE_EVT, &cb_data);
}
static void bta_gattc_conn_update_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint16_t interval, uint16_t latency,
uint16_t timeout, tGATT_STATUS status) {
tBTA_GATTC_RCB* p_clreg = bta_gattc_cl_get_regcb(gatt_if);
if (!p_clreg || !p_clreg->p_cback) {
LOG(ERROR) << __func__ << ": client_if=" << gatt_if << " not found";
return;
}
tBTA_GATTC cb_data;
cb_data.conn_update.conn_id = conn_id;
cb_data.conn_update.interval = interval;
cb_data.conn_update.latency = latency;
cb_data.conn_update.timeout = timeout;
cb_data.conn_update.status = status;
(*p_clreg->p_cback)(BTA_GATTC_CONN_UPDATE_EVT, &cb_data);
}
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