1 /****************************************************************************** 2 * 3 * Copyright (C) 2016 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 #define LOG_TAG "bt_btif_scanner" 20 21 #include <base/bind.h> 22 #include <base/threading/thread.h> 23 #include <errno.h> 24 #include <hardware/bluetooth.h> 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <string.h> 28 #include <unordered_set> 29 #include "device/include/controller.h" 30 31 #include "btif_common.h" 32 #include "btif_util.h" 33 34 #include <hardware/bt_gatt.h> 35 36 #include "advertise_data_parser.h" 37 #include "bta_api.h" 38 #include "bta_closure_api.h" 39 #include "bta_gatt_api.h" 40 #include "btif_config.h" 41 #include "btif_dm.h" 42 #include "btif_gatt.h" 43 #include "btif_gatt_util.h" 44 #include "btif_storage.h" 45 #include "osi/include/log.h" 46 #include "vendor_api.h" 47 48 using base::Bind; 49 using base::Owned; 50 using std::vector; 51 using RegisterCallback = BleScannerInterface::RegisterCallback; 52 53 extern const btgatt_callbacks_t* bt_gatt_callbacks; 54 55 #define SCAN_CBACK_IN_JNI(P_CBACK, ...) \ 56 do { \ 57 if (bt_gatt_callbacks && bt_gatt_callbacks->scanner->P_CBACK) { \ 58 BTIF_TRACE_API("HAL bt_gatt_callbacks->client->%s", #P_CBACK); \ 59 do_in_jni_thread( \ 60 Bind(bt_gatt_callbacks->scanner->P_CBACK, __VA_ARGS__)); \ 61 } else { \ 62 ASSERTC(0, "Callback is NULL", 0); \ 63 } \ 64 } while (0) 65 66 namespace { 67 68 // all access to this variable should be done on the jni thread 69 std::set<RawAddress> remote_bdaddr_cache; 70 std::queue<RawAddress> remote_bdaddr_cache_ordered; 71 const size_t remote_bdaddr_cache_max_size = 1024; 72 73 void btif_gattc_add_remote_bdaddr(const RawAddress& p_bda, uint8_t addr_type) { 74 // Remove the oldest entries 75 while (remote_bdaddr_cache.size() >= remote_bdaddr_cache_max_size) { 76 const RawAddress& raw_address = remote_bdaddr_cache_ordered.front(); 77 remote_bdaddr_cache.erase(raw_address); 78 remote_bdaddr_cache_ordered.pop(); 79 } 80 remote_bdaddr_cache.insert(p_bda); 81 remote_bdaddr_cache_ordered.push(p_bda); 82 } 83 84 bool btif_gattc_find_bdaddr(const RawAddress& p_bda) { 85 return (remote_bdaddr_cache.find(p_bda) != remote_bdaddr_cache.end()); 86 } 87 88 void btif_gattc_init_dev_cb(void) { 89 remote_bdaddr_cache.clear(); 90 remote_bdaddr_cache_ordered = {}; 91 } 92 93 void btif_gatts_upstreams_evt(uint16_t event, char* p_param) { 94 LOG_VERBOSE(LOG_TAG, "%s: Event %d", __func__, event); 95 96 tBTA_GATTC* p_data = (tBTA_GATTC*)p_param; 97 switch (event) { 98 case BTA_GATTC_DEREG_EVT: 99 break; 100 101 case BTA_GATTC_SEARCH_CMPL_EVT: { 102 HAL_CBACK(bt_gatt_callbacks, client->search_complete_cb, 103 p_data->search_cmpl.conn_id, p_data->search_cmpl.status); 104 break; 105 } 106 107 default: 108 LOG_DEBUG(LOG_TAG, "%s: Unhandled event (%d)", __func__, event); 109 break; 110 } 111 } 112 113 void bta_gatts_cback(tBTA_GATTC_EVT event, tBTA_GATTC* p_data) { 114 bt_status_t status = 115 btif_transfer_context(btif_gatts_upstreams_evt, (uint16_t)event, 116 (char*)p_data, sizeof(tBTA_GATTC), NULL); 117 ASSERTC(status == BT_STATUS_SUCCESS, "Context transfer failed!", status); 118 } 119 120 void bta_batch_scan_threshold_cb(tBTM_BLE_REF_VALUE ref_value) { 121 SCAN_CBACK_IN_JNI(batchscan_threshold_cb, ref_value); 122 } 123 124 void bta_batch_scan_reports_cb(int client_id, tBTA_STATUS status, 125 uint8_t report_format, uint8_t num_records, 126 std::vector<uint8_t> data) { 127 SCAN_CBACK_IN_JNI(batchscan_reports_cb, client_id, status, report_format, 128 num_records, std::move(data)); 129 } 130 131 void bta_scan_results_cb_impl(RawAddress bd_addr, tBT_DEVICE_TYPE device_type, 132 int8_t rssi, uint8_t addr_type, 133 uint16_t ble_evt_type, uint8_t ble_primary_phy, 134 uint8_t ble_secondary_phy, 135 uint8_t ble_advertising_sid, int8_t ble_tx_power, 136 uint16_t ble_periodic_adv_int, 137 vector<uint8_t> value) { 138 uint8_t remote_name_len; 139 bt_device_type_t dev_type; 140 bt_property_t properties; 141 142 const uint8_t* p_eir_remote_name = AdvertiseDataParser::GetFieldByType( 143 value, BTM_EIR_COMPLETE_LOCAL_NAME_TYPE, &remote_name_len); 144 145 if (p_eir_remote_name == NULL) { 146 p_eir_remote_name = AdvertiseDataParser::GetFieldByType( 147 value, BT_EIR_SHORTENED_LOCAL_NAME_TYPE, &remote_name_len); 148 } 149 150 if ((addr_type != BLE_ADDR_RANDOM) || (p_eir_remote_name)) { 151 if (!btif_gattc_find_bdaddr(bd_addr)) { 152 btif_gattc_add_remote_bdaddr(bd_addr, addr_type); 153 154 if (p_eir_remote_name) { 155 if (remote_name_len > BD_NAME_LEN + 1 || 156 (remote_name_len == BD_NAME_LEN + 1 && 157 p_eir_remote_name[BD_NAME_LEN] != '\0')) { 158 LOG_INFO(LOG_TAG, 159 "%s dropping invalid packet - device name too long: %d", 160 __func__, remote_name_len); 161 return; 162 } 163 164 bt_bdname_t bdname; 165 memcpy(bdname.name, p_eir_remote_name, remote_name_len); 166 if (remote_name_len < BD_NAME_LEN + 1) 167 bdname.name[remote_name_len] = '\0'; 168 169 LOG_VERBOSE(LOG_TAG, "%s BLE device name=%s len=%d dev_type=%d", 170 __func__, bdname.name, remote_name_len, device_type); 171 btif_dm_update_ble_remote_properties(bd_addr, bdname.name, device_type); 172 } 173 } 174 } 175 176 dev_type = (bt_device_type_t)device_type; 177 BTIF_STORAGE_FILL_PROPERTY(&properties, BT_PROPERTY_TYPE_OF_DEVICE, 178 sizeof(dev_type), &dev_type); 179 btif_storage_set_remote_device_property(&(bd_addr), &properties); 180 181 btif_storage_set_remote_addr_type(&bd_addr, addr_type); 182 HAL_CBACK(bt_gatt_callbacks, scanner->scan_result_cb, ble_evt_type, addr_type, 183 &bd_addr, ble_primary_phy, ble_secondary_phy, ble_advertising_sid, 184 ble_tx_power, rssi, ble_periodic_adv_int, std::move(value)); 185 } 186 187 void bta_scan_results_cb(tBTA_DM_SEARCH_EVT event, tBTA_DM_SEARCH* p_data) { 188 uint8_t len; 189 190 if (event == BTA_DM_INQ_CMPL_EVT) { 191 BTIF_TRACE_DEBUG("%s BLE observe complete. Num Resp %d", __func__, 192 p_data->inq_cmpl.num_resps); 193 return; 194 } 195 196 if (event != BTA_DM_INQ_RES_EVT) { 197 BTIF_TRACE_WARNING("%s : Unknown event 0x%x", __func__, event); 198 return; 199 } 200 201 vector<uint8_t> value; 202 if (p_data->inq_res.p_eir) { 203 value.insert(value.begin(), p_data->inq_res.p_eir, 204 p_data->inq_res.p_eir + p_data->inq_res.eir_len); 205 206 if (AdvertiseDataParser::GetFieldByType( 207 value, BTM_EIR_COMPLETE_LOCAL_NAME_TYPE, &len)) { 208 p_data->inq_res.remt_name_not_required = true; 209 } 210 } 211 212 tBTA_DM_INQ_RES* r = &p_data->inq_res; 213 do_in_jni_thread(Bind(bta_scan_results_cb_impl, r->bd_addr, r->device_type, 214 r->rssi, r->ble_addr_type, r->ble_evt_type, 215 r->ble_primary_phy, r->ble_secondary_phy, 216 r->ble_advertising_sid, r->ble_tx_power, 217 r->ble_periodic_adv_int, std::move(value))); 218 } 219 220 void bta_track_adv_event_cb(tBTM_BLE_TRACK_ADV_DATA* p_track_adv_data) { 221 btgatt_track_adv_info_t* btif_scan_track_cb = new btgatt_track_adv_info_t; 222 223 BTIF_TRACE_DEBUG("%s", __func__); 224 btif_gatt_move_track_adv_data(btif_scan_track_cb, 225 (btgatt_track_adv_info_t*)p_track_adv_data); 226 227 SCAN_CBACK_IN_JNI(track_adv_event_cb, Owned(btif_scan_track_cb)); 228 } 229 230 class BleScannerInterfaceImpl : public BleScannerInterface { 231 ~BleScannerInterfaceImpl(){}; 232 233 void RegisterScanner(RegisterCallback cb) override { 234 do_in_bta_thread(FROM_HERE, 235 Bind( 236 [](RegisterCallback cb) { 237 BTA_GATTC_AppRegister( 238 bta_gatts_cback, 239 jni_thread_wrapper(FROM_HERE, std::move(cb))); 240 }, 241 std::move(cb))); 242 } 243 244 void Unregister(int scanner_id) override { 245 do_in_bta_thread(FROM_HERE, Bind(&BTA_GATTC_AppDeregister, scanner_id)); 246 } 247 248 void Scan(bool start) override { 249 do_in_jni_thread(Bind( 250 [](bool start) { 251 if (!start) { 252 do_in_bta_thread(FROM_HERE, 253 Bind(&BTA_DmBleObserve, false, 0, nullptr)); 254 return; 255 } 256 257 btif_gattc_init_dev_cb(); 258 do_in_bta_thread(FROM_HERE, 259 Bind(&BTA_DmBleObserve, true, 0, 260 (tBTA_DM_SEARCH_CBACK*)bta_scan_results_cb)); 261 }, 262 start)); 263 } 264 265 void ScanFilterParamSetup( 266 uint8_t client_if, uint8_t action, uint8_t filt_index, 267 std::unique_ptr<btgatt_filt_param_setup_t> filt_param, 268 FilterParamSetupCallback cb) override { 269 BTIF_TRACE_DEBUG("%s", __func__); 270 271 if (filt_param && filt_param->dely_mode == 1) { 272 do_in_bta_thread( 273 FROM_HERE, base::Bind(BTM_BleTrackAdvertiser, bta_track_adv_event_cb, 274 client_if)); 275 } 276 277 do_in_bta_thread(FROM_HERE, 278 base::Bind(&BTM_BleAdvFilterParamSetup, action, filt_index, 279 base::Passed(&filt_param), 280 jni_thread_wrapper(FROM_HERE, std::move(cb)))); 281 } 282 283 void ScanFilterAddRemove(int action, int filt_type, int filt_index, 284 int company_id, int company_id_mask, 285 const bt_uuid_t* p_uuid, 286 const bt_uuid_t* p_uuid_mask, 287 const RawAddress* bd_addr, char addr_type, 288 vector<uint8_t> data, vector<uint8_t> mask, 289 FilterConfigCallback cb) override { 290 BTIF_TRACE_DEBUG("%s, %d, %d", __func__, action, filt_type); 291 292 /* If data is passed, both mask and data have to be the same length */ 293 if (data.size() != mask.size() && data.size() != 0 && mask.size() != 0) 294 return; 295 296 switch (filt_type) { 297 case BTM_BLE_PF_ADDR_FILTER: { 298 tBLE_BD_ADDR target_addr; 299 target_addr.bda = *bd_addr; 300 target_addr.type = addr_type; 301 302 do_in_bta_thread( 303 FROM_HERE, 304 base::Bind(&BTM_LE_PF_addr_filter, action, filt_index, 305 std::move(target_addr), 306 jni_thread_wrapper(FROM_HERE, Bind(cb, filt_type)))); 307 return; 308 } 309 310 case BTM_BLE_PF_SRVC_DATA: 311 do_in_bta_thread(FROM_HERE, 312 base::Bind(&BTM_LE_PF_srvc_data, action, filt_index)); 313 return; 314 315 case BTM_BLE_PF_SRVC_UUID: 316 case BTM_BLE_PF_SRVC_SOL_UUID: { 317 tBT_UUID bt_uuid; 318 btif_to_bta_uuid(&bt_uuid, p_uuid); 319 320 if (p_uuid_mask == NULL) { 321 do_in_bta_thread( 322 FROM_HERE, 323 base::Bind(&BTM_LE_PF_uuid_filter, action, filt_index, filt_type, 324 bt_uuid, BTM_BLE_PF_LOGIC_AND, nullptr, 325 jni_thread_wrapper(FROM_HERE, Bind(cb, filt_type)))); 326 return; 327 } 328 329 tBTM_BLE_PF_COND_MASK* mask = new tBTM_BLE_PF_COND_MASK; 330 btif_to_bta_uuid_mask(mask, p_uuid_mask, p_uuid); 331 do_in_bta_thread( 332 FROM_HERE, 333 base::Bind(&BTM_LE_PF_uuid_filter, action, filt_index, filt_type, 334 bt_uuid, BTM_BLE_PF_LOGIC_AND, base::Owned(mask), 335 jni_thread_wrapper(FROM_HERE, Bind(cb, filt_type)))); 336 return; 337 } 338 339 case BTM_BLE_PF_LOCAL_NAME: { 340 do_in_bta_thread( 341 FROM_HERE, 342 base::Bind(&BTM_LE_PF_local_name, action, filt_index, 343 std::move(data), 344 jni_thread_wrapper(FROM_HERE, Bind(cb, filt_type)))); 345 return; 346 } 347 348 case BTM_BLE_PF_MANU_DATA: { 349 do_in_bta_thread( 350 FROM_HERE, 351 base::Bind(&BTM_LE_PF_manu_data, action, filt_index, company_id, 352 company_id_mask, std::move(data), std::move(mask), 353 jni_thread_wrapper(FROM_HERE, Bind(cb, filt_type)))); 354 return; 355 } 356 357 case BTM_BLE_PF_SRVC_DATA_PATTERN: { 358 do_in_bta_thread( 359 FROM_HERE, 360 base::Bind(&BTM_LE_PF_srvc_data_pattern, action, filt_index, 361 std::move(data), std::move(mask), 362 jni_thread_wrapper(FROM_HERE, Bind(cb, filt_type)))); 363 return; 364 } 365 366 default: 367 LOG_ERROR(LOG_TAG, "%s: Unknown filter type (%d)!", __func__, action); 368 return; 369 } 370 } 371 372 void ScanFilterClear(int filter_index, FilterConfigCallback cb) override { 373 BTIF_TRACE_DEBUG("%s: filter_index: %d", __func__, filter_index); 374 do_in_bta_thread(FROM_HERE, 375 base::Bind(&BTM_LE_PF_clear, filter_index, 376 jni_thread_wrapper( 377 FROM_HERE, Bind(cb, BTM_BLE_PF_TYPE_ALL)))); 378 } 379 380 void ScanFilterEnable(bool enable, EnableCallback cb) override { 381 BTIF_TRACE_DEBUG("%s: enable: %d", __func__, enable); 382 383 uint8_t action = enable ? 1 : 0; 384 do_in_bta_thread(FROM_HERE, 385 base::Bind(&BTM_BleEnableDisableFilterFeature, action, 386 jni_thread_wrapper(FROM_HERE, std::move(cb)))); 387 } 388 389 void SetScanParameters(int scan_interval, int scan_window, 390 Callback cb) override { 391 do_in_bta_thread( 392 FROM_HERE, base::Bind(&BTM_BleSetScanParams, scan_interval, scan_window, 393 BTM_BLE_SCAN_MODE_ACTI, 394 jni_thread_wrapper(FROM_HERE, std::move(cb)))); 395 } 396 397 void BatchscanConfigStorage(int client_if, int batch_scan_full_max, 398 int batch_scan_trunc_max, 399 int batch_scan_notify_threshold, 400 Callback cb) override { 401 do_in_bta_thread( 402 FROM_HERE, 403 base::Bind(&BTM_BleSetStorageConfig, (uint8_t)batch_scan_full_max, 404 (uint8_t)batch_scan_trunc_max, 405 (uint8_t)batch_scan_notify_threshold, 406 jni_thread_wrapper(FROM_HERE, cb), 407 bta_batch_scan_threshold_cb, (tBTM_BLE_REF_VALUE)client_if)); 408 } 409 410 void BatchscanEnable(int scan_mode, int scan_interval, int scan_window, 411 int addr_type, int discard_rule, Callback cb) override { 412 do_in_bta_thread( 413 FROM_HERE, base::Bind(&BTM_BleEnableBatchScan, scan_mode, scan_interval, 414 scan_window, discard_rule, addr_type, 415 jni_thread_wrapper(FROM_HERE, cb))); 416 } 417 418 void BatchscanDisable(Callback cb) override { 419 do_in_bta_thread(FROM_HERE, base::Bind(&BTM_BleDisableBatchScan, 420 jni_thread_wrapper(FROM_HERE, cb))); 421 } 422 423 void BatchscanReadReports(int client_if, int scan_mode) override { 424 do_in_bta_thread(FROM_HERE, 425 base::Bind(&BTM_BleReadScanReports, (uint8_t)scan_mode, 426 Bind(bta_batch_scan_reports_cb, client_if))); 427 } 428 429 void StartSync(uint8_t sid, RawAddress address, uint16_t skip, 430 uint16_t timeout, StartSyncCb start_cb, SyncReportCb report_cb, 431 SyncLostCb lost_cb) override {} 432 433 void StopSync(uint16_t handle) override {} 434 }; 435 436 BleScannerInterface* btLeScannerInstance = nullptr; 437 438 } // namespace 439 440 BleScannerInterface* get_ble_scanner_instance() { 441 if (btLeScannerInstance == nullptr) 442 btLeScannerInstance = new BleScannerInterfaceImpl(); 443 444 return btLeScannerInstance; 445 } 446
