/******************************************************************************
*
* Copyright 2016 The Android Open Source Project
*
* 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.
*
******************************************************************************/
#define LOG_TAG "bt_btif_scanner"
#include <base/bind.h>
#include <base/threading/thread.h>
#include <errno.h>
#include <hardware/bluetooth.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unordered_set>
#include "device/include/controller.h"
#include "btif_common.h"
#include "btif_util.h"
#include <hardware/bt_gatt.h>
#include "advertise_data_parser.h"
#include "bta_api.h"
#include "bta_closure_api.h"
#include "bta_gatt_api.h"
#include "btif_config.h"
#include "btif_dm.h"
#include "btif_gatt.h"
#include "btif_gatt_util.h"
#include "btif_storage.h"
#include "osi/include/log.h"
#include "vendor_api.h"
using base::Bind;
using base::Owned;
using std::vector;
using RegisterCallback = BleScannerInterface::RegisterCallback;
extern const btgatt_callbacks_t* bt_gatt_callbacks;
#define SCAN_CBACK_IN_JNI(P_CBACK, ...) \
do { \
if (bt_gatt_callbacks && bt_gatt_callbacks->scanner->P_CBACK) { \
BTIF_TRACE_API("HAL bt_gatt_callbacks->client->%s", #P_CBACK); \
do_in_jni_thread( \
Bind(bt_gatt_callbacks->scanner->P_CBACK, __VA_ARGS__)); \
} else { \
ASSERTC(0, "Callback is NULL", 0); \
} \
} while (0)
namespace {
// all access to this variable should be done on the jni thread
std::set<RawAddress> remote_bdaddr_cache;
std::queue<RawAddress> remote_bdaddr_cache_ordered;
const size_t remote_bdaddr_cache_max_size = 1024;
void btif_gattc_add_remote_bdaddr(const RawAddress& p_bda, uint8_t addr_type) {
// Remove the oldest entries
while (remote_bdaddr_cache.size() >= remote_bdaddr_cache_max_size) {
const RawAddress& raw_address = remote_bdaddr_cache_ordered.front();
remote_bdaddr_cache.erase(raw_address);
remote_bdaddr_cache_ordered.pop();
}
remote_bdaddr_cache.insert(p_bda);
remote_bdaddr_cache_ordered.push(p_bda);
}
bool btif_gattc_find_bdaddr(const RawAddress& p_bda) {
return (remote_bdaddr_cache.find(p_bda) != remote_bdaddr_cache.end());
}
void btif_gattc_init_dev_cb(void) {
remote_bdaddr_cache.clear();
remote_bdaddr_cache_ordered = {};
}
void bta_batch_scan_threshold_cb(tBTM_BLE_REF_VALUE ref_value) {
SCAN_CBACK_IN_JNI(batchscan_threshold_cb, ref_value);
}
void bta_batch_scan_reports_cb(int client_id, tBTA_STATUS status,
uint8_t report_format, uint8_t num_records,
std::vector<uint8_t> data) {
SCAN_CBACK_IN_JNI(batchscan_reports_cb, client_id, status, report_format,
num_records, std::move(data));
}
void bta_scan_results_cb_impl(RawAddress bd_addr, tBT_DEVICE_TYPE device_type,
int8_t rssi, uint8_t addr_type,
uint16_t ble_evt_type, uint8_t ble_primary_phy,
uint8_t ble_secondary_phy,
uint8_t ble_advertising_sid, int8_t ble_tx_power,
uint16_t ble_periodic_adv_int,
vector<uint8_t> value) {
uint8_t remote_name_len;
bt_device_type_t dev_type;
bt_property_t properties;
const uint8_t* p_eir_remote_name = AdvertiseDataParser::GetFieldByType(
value, BTM_EIR_COMPLETE_LOCAL_NAME_TYPE, &remote_name_len);
if (p_eir_remote_name == NULL) {
p_eir_remote_name = AdvertiseDataParser::GetFieldByType(
value, BT_EIR_SHORTENED_LOCAL_NAME_TYPE, &remote_name_len);
}
if ((addr_type != BLE_ADDR_RANDOM) || (p_eir_remote_name)) {
if (!btif_gattc_find_bdaddr(bd_addr)) {
btif_gattc_add_remote_bdaddr(bd_addr, addr_type);
if (p_eir_remote_name) {
if (remote_name_len > BD_NAME_LEN + 1 ||
(remote_name_len == BD_NAME_LEN + 1 &&
p_eir_remote_name[BD_NAME_LEN] != '\0')) {
LOG_INFO(LOG_TAG,
"%s dropping invalid packet - device name too long: %d",
__func__, remote_name_len);
return;
}
bt_bdname_t bdname;
memcpy(bdname.name, p_eir_remote_name, remote_name_len);
if (remote_name_len < BD_NAME_LEN + 1)
bdname.name[remote_name_len] = '\0';
LOG_VERBOSE(LOG_TAG, "%s BLE device name=%s len=%d dev_type=%d",
__func__, bdname.name, remote_name_len, device_type);
btif_dm_update_ble_remote_properties(bd_addr, bdname.name, device_type);
}
}
}
dev_type = (bt_device_type_t)device_type;
BTIF_STORAGE_FILL_PROPERTY(&properties, BT_PROPERTY_TYPE_OF_DEVICE,
sizeof(dev_type), &dev_type);
btif_storage_set_remote_device_property(&(bd_addr), &properties);
btif_storage_set_remote_addr_type(&bd_addr, addr_type);
HAL_CBACK(bt_gatt_callbacks, scanner->scan_result_cb, ble_evt_type, addr_type,
&bd_addr, ble_primary_phy, ble_secondary_phy, ble_advertising_sid,
ble_tx_power, rssi, ble_periodic_adv_int, std::move(value));
}
void bta_scan_results_cb(tBTA_DM_SEARCH_EVT event, tBTA_DM_SEARCH* p_data) {
uint8_t len;
if (event == BTA_DM_INQ_CMPL_EVT) {
BTIF_TRACE_DEBUG("%s BLE observe complete. Num Resp %d", __func__,
p_data->inq_cmpl.num_resps);
return;
}
if (event != BTA_DM_INQ_RES_EVT) {
BTIF_TRACE_WARNING("%s : Unknown event 0x%x", __func__, event);
return;
}
vector<uint8_t> value;
if (p_data->inq_res.p_eir) {
value.insert(value.begin(), p_data->inq_res.p_eir,
p_data->inq_res.p_eir + p_data->inq_res.eir_len);
if (AdvertiseDataParser::GetFieldByType(
value, BTM_EIR_COMPLETE_LOCAL_NAME_TYPE, &len)) {
p_data->inq_res.remt_name_not_required = true;
}
}
tBTA_DM_INQ_RES* r = &p_data->inq_res;
do_in_jni_thread(Bind(bta_scan_results_cb_impl, r->bd_addr, r->device_type,
r->rssi, r->ble_addr_type, r->ble_evt_type,
r->ble_primary_phy, r->ble_secondary_phy,
r->ble_advertising_sid, r->ble_tx_power,
r->ble_periodic_adv_int, std::move(value)));
}
void bta_track_adv_event_cb(tBTM_BLE_TRACK_ADV_DATA* p_track_adv_data) {
btgatt_track_adv_info_t* btif_scan_track_cb = new btgatt_track_adv_info_t;
BTIF_TRACE_DEBUG("%s", __func__);
btif_gatt_move_track_adv_data(btif_scan_track_cb,
(btgatt_track_adv_info_t*)p_track_adv_data);
SCAN_CBACK_IN_JNI(track_adv_event_cb, Owned(btif_scan_track_cb));
}
void bta_cback(tBTA_GATTC_EVT, tBTA_GATTC*) {}
class BleScannerInterfaceImpl : public BleScannerInterface {
~BleScannerInterfaceImpl(){};
void RegisterScanner(RegisterCallback cb) override {
do_in_bta_thread(FROM_HERE,
Bind(
[](RegisterCallback cb) {
BTA_GATTC_AppRegister(
bta_cback,
jni_thread_wrapper(FROM_HERE, std::move(cb)));
},
std::move(cb)));
}
void Unregister(int scanner_id) override {
do_in_bta_thread(FROM_HERE, Bind(&BTA_GATTC_AppDeregister, scanner_id));
}
void Scan(bool start) override {
do_in_jni_thread(Bind(
[](bool start) {
if (!start) {
do_in_bta_thread(FROM_HERE,
Bind(&BTA_DmBleObserve, false, 0, nullptr));
return;
}
btif_gattc_init_dev_cb();
do_in_bta_thread(
FROM_HERE, Bind(&BTA_DmBleObserve, true, 0, bta_scan_results_cb));
},
start));
}
void ScanFilterParamSetup(
uint8_t client_if, uint8_t action, uint8_t filt_index,
std::unique_ptr<btgatt_filt_param_setup_t> filt_param,
FilterParamSetupCallback cb) override {
BTIF_TRACE_DEBUG("%s", __func__);
if (filt_param && filt_param->dely_mode == 1) {
do_in_bta_thread(
FROM_HERE, base::Bind(BTM_BleTrackAdvertiser, bta_track_adv_event_cb,
client_if));
}
do_in_bta_thread(FROM_HERE,
base::Bind(&BTM_BleAdvFilterParamSetup, action, filt_index,
base::Passed(&filt_param),
jni_thread_wrapper(FROM_HERE, std::move(cb))));
}
void ScanFilterAdd(int filter_index, std::vector<ApcfCommand> filters,
FilterConfigCallback cb) override {
BTIF_TRACE_DEBUG("%s: %d", __func__, filter_index);
do_in_bta_thread(
FROM_HERE,
base::Bind(
&BTM_LE_PF_set, filter_index, std::move(filters),
jni_thread_wrapper(
FROM_HERE,
Bind(std::move(cb),
0 /*TODO: this used to be filter type, unused ?*/))));
}
void ScanFilterClear(int filter_index, FilterConfigCallback cb) override {
BTIF_TRACE_DEBUG("%s: filter_index: %d", __func__, filter_index);
do_in_bta_thread(FROM_HERE,
base::Bind(&BTM_LE_PF_clear, filter_index,
jni_thread_wrapper(
FROM_HERE, Bind(cb, BTM_BLE_PF_TYPE_ALL))));
}
void ScanFilterEnable(bool enable, EnableCallback cb) override {
BTIF_TRACE_DEBUG("%s: enable: %d", __func__, enable);
uint8_t action = enable ? 1 : 0;
do_in_bta_thread(FROM_HERE,
base::Bind(&BTM_BleEnableDisableFilterFeature, action,
jni_thread_wrapper(FROM_HERE, std::move(cb))));
}
void SetScanParameters(int scan_interval, int scan_window,
Callback cb) override {
do_in_bta_thread(
FROM_HERE, base::Bind(&BTM_BleSetScanParams, scan_interval, scan_window,
BTM_BLE_SCAN_MODE_ACTI,
jni_thread_wrapper(FROM_HERE, std::move(cb))));
}
void BatchscanConfigStorage(int client_if, int batch_scan_full_max,
int batch_scan_trunc_max,
int batch_scan_notify_threshold,
Callback cb) override {
do_in_bta_thread(
FROM_HERE,
base::Bind(&BTM_BleSetStorageConfig, (uint8_t)batch_scan_full_max,
(uint8_t)batch_scan_trunc_max,
(uint8_t)batch_scan_notify_threshold,
jni_thread_wrapper(FROM_HERE, cb),
bta_batch_scan_threshold_cb, (tBTM_BLE_REF_VALUE)client_if));
}
void BatchscanEnable(int scan_mode, int scan_interval, int scan_window,
int addr_type, int discard_rule, Callback cb) override {
do_in_bta_thread(
FROM_HERE, base::Bind(&BTM_BleEnableBatchScan, scan_mode, scan_interval,
scan_window, discard_rule, addr_type,
jni_thread_wrapper(FROM_HERE, cb)));
}
void BatchscanDisable(Callback cb) override {
do_in_bta_thread(FROM_HERE, base::Bind(&BTM_BleDisableBatchScan,
jni_thread_wrapper(FROM_HERE, cb)));
}
void BatchscanReadReports(int client_if, int scan_mode) override {
do_in_bta_thread(FROM_HERE,
base::Bind(&BTM_BleReadScanReports, (uint8_t)scan_mode,
Bind(bta_batch_scan_reports_cb, client_if)));
}
void StartSync(uint8_t sid, RawAddress address, uint16_t skip,
uint16_t timeout, StartSyncCb start_cb, SyncReportCb report_cb,
SyncLostCb lost_cb) override {}
void StopSync(uint16_t handle) override {}
};
BleScannerInterface* btLeScannerInstance = nullptr;
} // namespace
BleScannerInterface* get_ble_scanner_instance() {
if (btLeScannerInstance == nullptr)
btLeScannerInstance = new BleScannerInterfaceImpl();
return btLeScannerInstance;
}