1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 78 #ifndef HCI_HOST_ACL_PACKET_NUM 79 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 80 #endif 81 #ifndef HCI_HOST_ACL_PACKET_LEN 82 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 83 #endif 84 #ifndef HCI_HOST_SCO_PACKET_NUM 85 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 86 #endif 87 #ifndef HCI_HOST_SCO_PACKET_LEN 88 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 89 #endif 90 #endif 91 92 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 93 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 94 #endif 95 96 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 97 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 98 #endif 99 100 #define HCI_CONNECTION_TIMEOUT_MS 10000 101 102 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 103 #define HCI_RESET_RESEND_TIMEOUT_MS 200 104 #endif 105 106 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 107 #ifndef GAP_INQUIRY_MAX_NAME_LEN 108 #define GAP_INQUIRY_MAX_NAME_LEN 32 109 #endif 110 111 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 112 #define GAP_INQUIRY_DURATION_MIN 0x01 113 #define GAP_INQUIRY_DURATION_MAX 0x30 114 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 115 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 116 #define GAP_INQUIRY_STATE_IDLE 0x00 117 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 118 #define GAP_INQUIRY_STATE_ACTIVE 0x81 119 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 120 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 121 #define GAP_INQUIRY_STATE_PERIODIC 0x84 122 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 123 124 // GAP Remote Name Request 125 #define GAP_REMOTE_NAME_STATE_IDLE 0 126 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 127 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 128 129 // GAP Pairing 130 #define GAP_PAIRING_STATE_IDLE 0 131 #define GAP_PAIRING_STATE_SEND_PIN 1 132 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 133 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 134 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 135 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 136 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 137 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 138 139 // 140 // compact storage of relevant supported HCI Commands. 141 // X-Macro below provides enumeration and mapping table into the supported 142 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 143 // 144 145 // format: command name, byte offset, bit nr in 64-byte supported commands 146 // currently stored in 32-bit variable 147 #define SUPPORTED_HCI_COMMANDS \ 148 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 149 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 150 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 151 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 152 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 153 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 154 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 155 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 156 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 157 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 158 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 159 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 160 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 161 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 162 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 163 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 164 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 165 166 // enumerate supported commands 167 #define X(name, offset, bit) name, 168 enum { 169 SUPPORTED_HCI_COMMANDS 170 SUPPORTED_HCI_COMMANDS_COUNT 171 }; 172 #undef X 173 174 // prototypes 175 #ifdef ENABLE_CLASSIC 176 static void hci_update_scan_enable(void); 177 static void hci_emit_discoverable_enabled(uint8_t enabled); 178 static int hci_local_ssp_activated(void); 179 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 180 static bool hci_ssp_supported(hci_connection_t * connection); 181 static void hci_notify_if_sco_can_send_now(void); 182 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 183 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 184 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 185 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 186 static void hci_connection_timestamp(hci_connection_t *connection); 187 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 188 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 189 #endif 190 191 static int hci_power_control_on(void); 192 static void hci_power_control_off(void); 193 static void hci_state_reset(void); 194 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 195 static void hci_emit_transport_packet_sent(void); 196 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 197 static void hci_emit_nr_connections_changed(void); 198 static void hci_emit_hci_open_failed(void); 199 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 200 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 201 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 202 static void hci_run(void); 203 static int hci_is_le_connection(hci_connection_t * connection); 204 205 #ifdef ENABLE_CLASSIC 206 static int hci_have_usb_transport(void); 207 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 208 #endif 209 210 #ifdef ENABLE_BLE 211 static void hci_whitelist_free(void); 212 #ifdef ENABLE_LE_CENTRAL 213 // called from test/ble_client/advertising_data_parser.c 214 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 215 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 216 static hci_connection_t * gap_get_outgoing_connection(void); 217 static void hci_le_scan_stop(void); 218 static bool hci_run_general_gap_le(void); 219 #endif 220 #ifdef ENABLE_LE_PERIPHERAL 221 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 222 static void hci_periodic_advertiser_list_free(void); 223 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 224 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 225 #endif /* ENABLE_LE_PERIPHERAL */ 226 #endif /* ENABLE_BLE */ 227 228 // the STACK is here 229 #ifndef HAVE_MALLOC 230 static hci_stack_t hci_stack_static; 231 #endif 232 static hci_stack_t * hci_stack = NULL; 233 234 #ifdef ENABLE_CLASSIC 235 // default name 236 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 237 238 // test helper 239 static uint8_t disable_l2cap_timeouts = 0; 240 #endif 241 242 // reset connection state on create and on reconnect 243 // don't overwrite addr, con handle, role 244 static void hci_connection_init(hci_connection_t * conn){ 245 conn->authentication_flags = AUTH_FLAG_NONE; 246 conn->bonding_flags = 0; 247 conn->requested_security_level = LEVEL_0; 248 #ifdef ENABLE_CLASSIC 249 conn->request_role = HCI_ROLE_INVALID; 250 conn->sniff_subrating_max_latency = 0xffff; 251 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 252 conn->link_key_type = INVALID_LINK_KEY; 253 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 254 btstack_run_loop_set_timer_context(&conn->timeout, conn); 255 hci_connection_timestamp(conn); 256 #endif 257 conn->acl_recombination_length = 0; 258 conn->acl_recombination_pos = 0; 259 conn->num_packets_sent = 0; 260 261 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 262 #ifdef ENABLE_BLE 263 conn->le_phy_update_all_phys = 0xff; 264 #endif 265 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 266 conn->le_max_tx_octets = 27; 267 #endif 268 #ifdef ENABLE_CLASSIC_PAIRING_OOB 269 conn->classic_oob_c_192 = NULL; 270 conn->classic_oob_r_192 = NULL; 271 conn->classic_oob_c_256 = NULL; 272 conn->classic_oob_r_256 = NULL; 273 #endif 274 } 275 276 /** 277 * create connection for given address 278 * 279 * @return connection OR NULL, if no memory left 280 */ 281 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 282 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 283 284 hci_connection_t * conn = btstack_memory_hci_connection_get(); 285 if (!conn) return NULL; 286 hci_connection_init(conn); 287 288 bd_addr_copy(conn->address, addr); 289 conn->address_type = addr_type; 290 conn->con_handle = HCI_CON_HANDLE_INVALID; 291 conn->role = HCI_ROLE_INVALID; 292 293 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 294 295 return conn; 296 } 297 298 299 /** 300 * get le connection parameter range 301 * 302 * @return le connection parameter range struct 303 */ 304 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 305 *range = hci_stack->le_connection_parameter_range; 306 } 307 308 /** 309 * set le connection parameter range 310 * 311 */ 312 313 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 314 hci_stack->le_connection_parameter_range = *range; 315 } 316 317 /** 318 * @brief Test if connection parameters are inside in existing rage 319 * @param conn_interval_min (unit: 1.25ms) 320 * @param conn_interval_max (unit: 1.25ms) 321 * @param conn_latency 322 * @param supervision_timeout (unit: 10ms) 323 * @return 1 if included 324 */ 325 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 326 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 327 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 328 329 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 330 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 331 332 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 333 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 334 335 return 1; 336 } 337 338 /** 339 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 340 * @note: default: 1 341 * @param max_peripheral_connections 342 */ 343 #ifdef ENABLE_LE_PERIPHERAL 344 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 345 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 346 } 347 #endif 348 349 /** 350 * get hci connections iterator 351 * 352 * @return hci connections iterator 353 */ 354 355 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 356 btstack_linked_list_iterator_init(it, &hci_stack->connections); 357 } 358 359 /** 360 * get connection for a given handle 361 * 362 * @return connection OR NULL, if not found 363 */ 364 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 365 btstack_linked_list_iterator_t it; 366 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 367 while (btstack_linked_list_iterator_has_next(&it)){ 368 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 369 if ( item->con_handle == con_handle ) { 370 return item; 371 } 372 } 373 return NULL; 374 } 375 376 /** 377 * get connection for given address 378 * 379 * @return connection OR NULL, if not found 380 */ 381 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 382 btstack_linked_list_iterator_t it; 383 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 384 while (btstack_linked_list_iterator_has_next(&it)){ 385 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 386 if (connection->address_type != addr_type) continue; 387 if (memcmp(addr, connection->address, 6) != 0) continue; 388 return connection; 389 } 390 return NULL; 391 } 392 393 #ifdef ENABLE_CLASSIC 394 395 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 396 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 397 } 398 399 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 400 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 401 } 402 403 #ifdef ENABLE_SCO_OVER_HCI 404 static int hci_number_sco_connections(void){ 405 int connections = 0; 406 btstack_linked_list_iterator_t it; 407 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 408 while (btstack_linked_list_iterator_has_next(&it)){ 409 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 410 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 411 connections++; 412 } 413 return connections; 414 } 415 #endif 416 417 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 418 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 419 #ifdef HAVE_EMBEDDED_TICK 420 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 421 // connections might be timed out 422 hci_emit_l2cap_check_timeout(connection); 423 } 424 #else 425 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 426 // connections might be timed out 427 hci_emit_l2cap_check_timeout(connection); 428 } 429 #endif 430 } 431 432 static void hci_connection_timestamp(hci_connection_t *connection){ 433 #ifdef HAVE_EMBEDDED_TICK 434 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 435 #else 436 connection->timestamp = btstack_run_loop_get_time_ms(); 437 #endif 438 } 439 440 /** 441 * add authentication flags and reset timer 442 * @note: assumes classic connection 443 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 444 */ 445 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 446 bd_addr_t addr; 447 reverse_bd_addr(bd_addr, addr); 448 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 449 if (conn) { 450 connectionSetAuthenticationFlags(conn, flags); 451 hci_connection_timestamp(conn); 452 } 453 } 454 455 static bool hci_pairing_active(hci_connection_t * hci_connection){ 456 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 457 } 458 459 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 460 if (hci_pairing_active(hci_connection)) return; 461 if (ssp){ 462 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 463 } else { 464 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 465 } 466 // if we are initiator, we have sent an HCI Authenticate Request 467 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 468 469 // if we are responder, use minimal service security level as required level 470 if (!initiator){ 471 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 472 } 473 474 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 475 476 uint8_t event[12]; 477 event[0] = GAP_EVENT_PAIRING_STARTED; 478 event[1] = 10; 479 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 480 reverse_bd_addr(hci_connection->address, &event[4]); 481 event[10] = (uint8_t) ssp; 482 event[11] = (uint8_t) initiator; 483 hci_emit_event(event, sizeof(event), 1); 484 } 485 486 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 487 hci_connection->requested_security_level = LEVEL_0; 488 if (!hci_pairing_active(hci_connection)) return; 489 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 490 #ifdef ENABLE_CLASSIC_PAIRING_OOB 491 hci_connection->classic_oob_c_192 = NULL; 492 hci_connection->classic_oob_r_192 = NULL; 493 hci_connection->classic_oob_c_256 = NULL; 494 hci_connection->classic_oob_r_256 = NULL; 495 #endif 496 log_info("pairing complete, status %02x", status); 497 498 uint8_t event[11]; 499 event[0] = GAP_EVENT_PAIRING_COMPLETE; 500 event[1] = 9; 501 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 502 reverse_bd_addr(hci_connection->address, &event[4]); 503 event[10] = status; 504 hci_emit_event(event, sizeof(event), 1); 505 506 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 507 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 508 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 509 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 510 hci_connection->bonding_status = status; 511 } 512 } 513 514 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 515 hci_connection_t * conn = hci_connection_for_handle(handle); 516 if (!conn) return false; 517 return hci_pairing_active(conn); 518 } 519 520 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 521 if (!hci_stack->link_key_db) return; 522 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 523 hci_stack->link_key_db->delete_link_key(addr); 524 } 525 526 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 527 if (!hci_stack->link_key_db) return; 528 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 529 hci_stack->link_key_db->put_link_key(addr, link_key, type); 530 } 531 532 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 533 if (!hci_stack->link_key_db) return false; 534 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 535 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 536 return result; 537 } 538 539 void gap_delete_all_link_keys(void){ 540 bd_addr_t addr; 541 link_key_t link_key; 542 link_key_type_t type; 543 btstack_link_key_iterator_t it; 544 int ok = gap_link_key_iterator_init(&it); 545 if (!ok) { 546 log_error("could not initialize iterator"); 547 return; 548 } 549 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 550 gap_drop_link_key_for_bd_addr(addr); 551 } 552 gap_link_key_iterator_done(&it); 553 } 554 555 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 556 if (!hci_stack->link_key_db) return 0; 557 if (!hci_stack->link_key_db->iterator_init) return 0; 558 return hci_stack->link_key_db->iterator_init(it); 559 } 560 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 561 if (!hci_stack->link_key_db) return 0; 562 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 563 } 564 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 565 if (!hci_stack->link_key_db) return; 566 hci_stack->link_key_db->iterator_done(it); 567 } 568 #endif 569 570 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 571 switch (address_type){ 572 case BD_ADDR_TYPE_LE_PUBLIC: 573 case BD_ADDR_TYPE_LE_RANDOM: 574 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 575 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 576 return true; 577 default: 578 return false; 579 } 580 } 581 582 static int hci_is_le_connection(hci_connection_t * connection){ 583 return hci_is_le_connection_type(connection->address_type); 584 } 585 586 /** 587 * count connections 588 */ 589 static int nr_hci_connections(void){ 590 int count = 0; 591 btstack_linked_item_t *it; 592 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 593 count++; 594 } 595 return count; 596 } 597 598 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 599 600 unsigned int num_packets_sent_classic = 0; 601 unsigned int num_packets_sent_le = 0; 602 603 btstack_linked_item_t *it; 604 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 605 hci_connection_t * connection = (hci_connection_t *) it; 606 if (hci_is_le_connection(connection)){ 607 num_packets_sent_le += connection->num_packets_sent; 608 } 609 if (connection->address_type == BD_ADDR_TYPE_ACL){ 610 num_packets_sent_classic += connection->num_packets_sent; 611 } 612 } 613 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 614 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 615 int free_slots_le = 0; 616 617 if (free_slots_classic < 0){ 618 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 619 return 0; 620 } 621 622 if (hci_stack->le_acl_packets_total_num){ 623 // if we have LE slots, they are used 624 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 625 if (free_slots_le < 0){ 626 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 627 return 0; 628 } 629 } else { 630 // otherwise, classic slots are used for LE, too 631 free_slots_classic -= num_packets_sent_le; 632 if (free_slots_classic < 0){ 633 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 634 return 0; 635 } 636 } 637 638 switch (address_type){ 639 case BD_ADDR_TYPE_UNKNOWN: 640 log_error("hci_number_free_acl_slots: unknown address type"); 641 return 0; 642 643 case BD_ADDR_TYPE_ACL: 644 return (uint16_t) free_slots_classic; 645 646 default: 647 if (hci_stack->le_acl_packets_total_num > 0){ 648 return (uint16_t) free_slots_le; 649 } 650 return (uint16_t) free_slots_classic; 651 } 652 } 653 654 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 655 // get connection type 656 hci_connection_t * connection = hci_connection_for_handle(con_handle); 657 if (!connection){ 658 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 659 return 0; 660 } 661 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 662 } 663 664 #ifdef ENABLE_CLASSIC 665 static int hci_number_free_sco_slots(void){ 666 unsigned int num_sco_packets_sent = 0; 667 btstack_linked_item_t *it; 668 if (hci_stack->synchronous_flow_control_enabled){ 669 // explicit flow control 670 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 671 hci_connection_t * connection = (hci_connection_t *) it; 672 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 673 num_sco_packets_sent += connection->num_packets_sent; 674 } 675 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 676 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 677 return 0; 678 } 679 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 680 } else { 681 // implicit flow control -- TODO 682 int num_ready = 0; 683 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 684 hci_connection_t * connection = (hci_connection_t *) it; 685 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 686 if (connection->sco_tx_ready == 0) continue; 687 num_ready++; 688 } 689 return num_ready; 690 } 691 } 692 #endif 693 694 // only used to send HCI Host Number Completed Packets 695 static int hci_can_send_comand_packet_transport(void){ 696 if (hci_stack->hci_packet_buffer_reserved) return 0; 697 698 // check for async hci transport implementations 699 if (hci_stack->hci_transport->can_send_packet_now){ 700 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 701 return 0; 702 } 703 } 704 return 1; 705 } 706 707 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 708 bool hci_can_send_command_packet_now(void){ 709 if (hci_can_send_comand_packet_transport() == 0) return false; 710 return hci_stack->num_cmd_packets > 0u; 711 } 712 713 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 714 // check for async hci transport implementations 715 if (!hci_stack->hci_transport->can_send_packet_now) return true; 716 return hci_stack->hci_transport->can_send_packet_now(packet_type); 717 } 718 719 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 720 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 721 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 722 } 723 724 bool hci_can_send_acl_le_packet_now(void){ 725 if (hci_stack->hci_packet_buffer_reserved) return false; 726 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 727 } 728 729 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 730 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 731 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 732 } 733 734 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 735 if (hci_stack->hci_packet_buffer_reserved) return false; 736 return hci_can_send_prepared_acl_packet_now(con_handle); 737 } 738 739 #ifdef ENABLE_CLASSIC 740 bool hci_can_send_acl_classic_packet_now(void){ 741 if (hci_stack->hci_packet_buffer_reserved) return false; 742 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 743 } 744 745 bool hci_can_send_prepared_sco_packet_now(void){ 746 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 747 if (hci_have_usb_transport()){ 748 return hci_stack->sco_can_send_now; 749 } else { 750 return hci_number_free_sco_slots() > 0; 751 } 752 } 753 754 bool hci_can_send_sco_packet_now(void){ 755 if (hci_stack->hci_packet_buffer_reserved) return false; 756 return hci_can_send_prepared_sco_packet_now(); 757 } 758 759 void hci_request_sco_can_send_now_event(void){ 760 hci_stack->sco_waiting_for_can_send_now = 1; 761 hci_notify_if_sco_can_send_now(); 762 } 763 #endif 764 765 // used for internal checks in l2cap.c 766 bool hci_is_packet_buffer_reserved(void){ 767 return hci_stack->hci_packet_buffer_reserved; 768 } 769 770 // reserves outgoing packet buffer. 771 // @return 1 if successful 772 bool hci_reserve_packet_buffer(void){ 773 if (hci_stack->hci_packet_buffer_reserved) { 774 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 775 return false; 776 } 777 hci_stack->hci_packet_buffer_reserved = true; 778 return true; 779 } 780 781 void hci_release_packet_buffer(void){ 782 hci_stack->hci_packet_buffer_reserved = false; 783 } 784 785 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 786 static int hci_transport_synchronous(void){ 787 return hci_stack->hci_transport->can_send_packet_now == NULL; 788 } 789 790 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 791 792 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 793 794 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 795 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 796 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 797 max_acl_data_packet_length = hci_stack->le_data_packets_length; 798 } 799 800 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 801 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 802 max_acl_data_packet_length = connection->le_max_tx_octets; 803 } 804 #endif 805 806 log_debug("hci_send_acl_packet_fragments entered"); 807 808 uint8_t status = ERROR_CODE_SUCCESS; 809 // multiple packets could be send on a synchronous HCI transport 810 while (true){ 811 812 log_debug("hci_send_acl_packet_fragments loop entered"); 813 814 // get current data 815 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 816 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 817 bool more_fragments = false; 818 819 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 820 if (current_acl_data_packet_length > max_acl_data_packet_length){ 821 more_fragments = true; 822 current_acl_data_packet_length = max_acl_data_packet_length; 823 } 824 825 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 826 if (acl_header_pos > 0u){ 827 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 828 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 829 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 830 } 831 832 // update header len 833 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 834 835 // count packet 836 connection->num_packets_sent++; 837 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 838 839 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 840 if (more_fragments){ 841 // update start of next fragment to send 842 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 843 } else { 844 // done 845 hci_stack->acl_fragmentation_pos = 0; 846 hci_stack->acl_fragmentation_total_size = 0; 847 } 848 849 // send packet 850 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 851 const int size = current_acl_data_packet_length + 4; 852 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 853 hci_stack->acl_fragmentation_tx_active = 1; 854 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 855 if (err != 0){ 856 // no error from HCI Transport expected 857 status = ERROR_CODE_HARDWARE_FAILURE; 858 } 859 860 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 861 862 // done yet? 863 if (!more_fragments) break; 864 865 // can send more? 866 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 867 } 868 869 log_debug("hci_send_acl_packet_fragments loop over"); 870 871 // release buffer now for synchronous transport 872 if (hci_transport_synchronous()){ 873 hci_stack->acl_fragmentation_tx_active = 0; 874 hci_release_packet_buffer(); 875 hci_emit_transport_packet_sent(); 876 } 877 878 return status; 879 } 880 881 // pre: caller has reserved the packet buffer 882 uint8_t hci_send_acl_packet_buffer(int size){ 883 btstack_assert(hci_stack->hci_packet_buffer_reserved); 884 885 uint8_t * packet = hci_stack->hci_packet_buffer; 886 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 887 888 // check for free places on Bluetooth module 889 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 890 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 891 hci_release_packet_buffer(); 892 hci_emit_transport_packet_sent(); 893 return BTSTACK_ACL_BUFFERS_FULL; 894 } 895 896 hci_connection_t *connection = hci_connection_for_handle( con_handle); 897 if (!connection) { 898 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 899 hci_release_packet_buffer(); 900 hci_emit_transport_packet_sent(); 901 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 902 } 903 904 #ifdef ENABLE_CLASSIC 905 hci_connection_timestamp(connection); 906 #endif 907 908 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 909 910 // setup data 911 hci_stack->acl_fragmentation_total_size = size; 912 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 913 914 return hci_send_acl_packet_fragments(connection); 915 } 916 917 #ifdef ENABLE_CLASSIC 918 // pre: caller has reserved the packet buffer 919 uint8_t hci_send_sco_packet_buffer(int size){ 920 btstack_assert(hci_stack->hci_packet_buffer_reserved); 921 922 uint8_t * packet = hci_stack->hci_packet_buffer; 923 924 // skip checks in loopback mode 925 if (!hci_stack->loopback_mode){ 926 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 927 928 // check for free places on Bluetooth module 929 if (!hci_can_send_prepared_sco_packet_now()) { 930 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 931 hci_release_packet_buffer(); 932 hci_emit_transport_packet_sent(); 933 return BTSTACK_ACL_BUFFERS_FULL; 934 } 935 936 // track send packet in connection struct 937 hci_connection_t *connection = hci_connection_for_handle( con_handle); 938 if (!connection) { 939 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 940 hci_release_packet_buffer(); 941 hci_emit_transport_packet_sent(); 942 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 943 } 944 945 if (hci_have_usb_transport()){ 946 // token used 947 hci_stack->sco_can_send_now = false; 948 } else { 949 if (hci_stack->synchronous_flow_control_enabled){ 950 connection->num_packets_sent++; 951 } else { 952 connection->sco_tx_ready--; 953 } 954 } 955 } 956 957 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 958 959 #ifdef HAVE_SCO_TRANSPORT 960 hci_stack->sco_transport->send_packet(packet, size); 961 hci_release_packet_buffer(); 962 hci_emit_transport_packet_sent(); 963 964 return 0; 965 #else 966 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 967 if (hci_transport_synchronous()){ 968 hci_release_packet_buffer(); 969 hci_emit_transport_packet_sent(); 970 } 971 972 if (err != 0){ 973 return ERROR_CODE_HARDWARE_FAILURE; 974 } 975 return ERROR_CODE_SUCCESS; 976 #endif 977 } 978 #endif 979 980 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 981 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 982 btstack_assert(hci_stack->hci_packet_buffer_reserved); 983 984 uint8_t * packet = hci_stack->hci_packet_buffer; 985 // TODO: check for space on controller 986 // TODO: track outgoing packet sent 987 hci_dump_packet( HCI_ISO_DATA_PACKET, 0, packet, size); 988 989 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 990 return (err == 0) ? ERROR_CODE_SUCCESS : ERROR_CODE_HARDWARE_FAILURE; 991 } 992 #endif 993 994 static void acl_handler(uint8_t *packet, uint16_t size){ 995 996 // get info 997 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 998 hci_connection_t *conn = hci_connection_for_handle(con_handle); 999 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1000 uint16_t acl_length = READ_ACL_LENGTH(packet); 1001 1002 // ignore non-registered handle 1003 if (!conn){ 1004 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1005 return; 1006 } 1007 1008 // assert packet is complete 1009 if ((acl_length + 4u) != size){ 1010 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1011 return; 1012 } 1013 1014 #ifdef ENABLE_CLASSIC 1015 // update idle timestamp 1016 hci_connection_timestamp(conn); 1017 #endif 1018 1019 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1020 hci_stack->host_completed_packets = 1; 1021 conn->num_packets_completed++; 1022 #endif 1023 1024 // handle different packet types 1025 switch (acl_flags & 0x03u) { 1026 1027 case 0x01: // continuation fragment 1028 1029 // sanity checks 1030 if (conn->acl_recombination_pos == 0u) { 1031 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1032 return; 1033 } 1034 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1035 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1036 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1037 conn->acl_recombination_pos = 0; 1038 return; 1039 } 1040 1041 // append fragment payload (header already stored) 1042 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1043 &packet[4], acl_length); 1044 conn->acl_recombination_pos += acl_length; 1045 1046 // forward complete L2CAP packet if complete. 1047 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1048 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1049 // reset recombination buffer 1050 conn->acl_recombination_length = 0; 1051 conn->acl_recombination_pos = 0; 1052 } 1053 break; 1054 1055 case 0x02: { // first fragment 1056 1057 // sanity check 1058 if (conn->acl_recombination_pos) { 1059 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 1060 conn->acl_recombination_pos = 0; 1061 } 1062 1063 // peek into L2CAP packet! 1064 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1065 1066 // compare fragment size to L2CAP packet size 1067 if (acl_length >= (l2cap_length + 4u)){ 1068 // forward fragment as L2CAP packet 1069 hci_emit_acl_packet(packet, acl_length + 4u); 1070 } else { 1071 1072 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1073 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1074 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1075 return; 1076 } 1077 1078 // store first fragment and tweak acl length for complete package 1079 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1080 packet, acl_length + 4u); 1081 conn->acl_recombination_pos = acl_length + 4u; 1082 conn->acl_recombination_length = l2cap_length; 1083 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1084 } 1085 break; 1086 1087 } 1088 default: 1089 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1090 return; 1091 } 1092 1093 // execute main loop 1094 hci_run(); 1095 } 1096 1097 static void hci_connection_stop_timer(hci_connection_t * conn){ 1098 btstack_run_loop_remove_timer(&conn->timeout); 1099 #ifdef ENABLE_CLASSIC 1100 btstack_run_loop_remove_timer(&conn->timeout_sco); 1101 #endif 1102 } 1103 1104 static void hci_shutdown_connection(hci_connection_t *conn){ 1105 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1106 1107 #ifdef ENABLE_CLASSIC 1108 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1109 bd_addr_type_t addr_type = conn->address_type; 1110 #endif 1111 #ifdef HAVE_SCO_TRANSPORT 1112 hci_con_handle_t con_handle = conn->con_handle; 1113 #endif 1114 #endif 1115 1116 hci_connection_stop_timer(conn); 1117 1118 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1119 btstack_memory_hci_connection_free( conn ); 1120 1121 // now it's gone 1122 hci_emit_nr_connections_changed(); 1123 1124 #ifdef ENABLE_CLASSIC 1125 #ifdef ENABLE_SCO_OVER_HCI 1126 // update SCO 1127 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1128 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1129 } 1130 #endif 1131 #ifdef HAVE_SCO_TRANSPORT 1132 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1133 hci_stack->sco_transport->close(con_handle); 1134 } 1135 #endif 1136 #endif 1137 } 1138 1139 #ifdef ENABLE_CLASSIC 1140 1141 static const uint16_t packet_type_sizes[] = { 1142 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1143 HCI_ACL_DH1_SIZE, 0, 0, 0, 1144 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1145 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1146 }; 1147 static const uint8_t packet_type_feature_requirement_bit[] = { 1148 0, // 3 slot packets 1149 1, // 5 slot packets 1150 25, // EDR 2 mpbs 1151 26, // EDR 3 mbps 1152 39, // 3 slot EDR packts 1153 40, // 5 slot EDR packet 1154 }; 1155 static const uint16_t packet_type_feature_packet_mask[] = { 1156 0x0f00, // 3 slot packets 1157 0xf000, // 5 slot packets 1158 0x1102, // EDR 2 mpbs 1159 0x2204, // EDR 3 mbps 1160 0x0300, // 3 slot EDR packts 1161 0x3000, // 5 slot EDR packet 1162 }; 1163 1164 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1165 // enable packet types based on size 1166 uint16_t packet_types = 0; 1167 unsigned int i; 1168 for (i=0;i<16;i++){ 1169 if (packet_type_sizes[i] == 0) continue; 1170 if (packet_type_sizes[i] <= buffer_size){ 1171 packet_types |= 1 << i; 1172 } 1173 } 1174 // disable packet types due to missing local supported features 1175 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1176 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1177 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1178 if (feature_set) continue; 1179 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1180 packet_types &= ~packet_type_feature_packet_mask[i]; 1181 } 1182 // flip bits for "may not be used" 1183 packet_types ^= 0x3306; 1184 return packet_types; 1185 } 1186 1187 uint16_t hci_usable_acl_packet_types(void){ 1188 return hci_stack->packet_types; 1189 } 1190 #endif 1191 1192 uint8_t* hci_get_outgoing_packet_buffer(void){ 1193 // hci packet buffer is >= acl data packet length 1194 return hci_stack->hci_packet_buffer; 1195 } 1196 1197 uint16_t hci_max_acl_data_packet_length(void){ 1198 return hci_stack->acl_data_packet_length; 1199 } 1200 1201 #ifdef ENABLE_CLASSIC 1202 bool hci_extended_sco_link_supported(void){ 1203 // No. 31, byte 3, bit 7 1204 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1205 } 1206 #endif 1207 1208 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1209 // No. 54, byte 6, bit 6 1210 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1211 } 1212 1213 #ifdef ENABLE_CLASSIC 1214 static int gap_ssp_supported(void){ 1215 // No. 51, byte 6, bit 3 1216 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1217 } 1218 #endif 1219 1220 static int hci_classic_supported(void){ 1221 #ifdef ENABLE_CLASSIC 1222 // No. 37, byte 4, bit 5, = No BR/EDR Support 1223 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1224 #else 1225 return 0; 1226 #endif 1227 } 1228 1229 static int hci_le_supported(void){ 1230 #ifdef ENABLE_BLE 1231 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1232 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1233 #else 1234 return 0; 1235 #endif 1236 } 1237 1238 static bool hci_command_supported(uint8_t command_index){ 1239 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1240 } 1241 1242 #ifdef ENABLE_BLE 1243 1244 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1245 static bool hci_extended_advertising_supported(void){ 1246 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1247 } 1248 #endif 1249 1250 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1251 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1252 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1253 } else { 1254 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1255 } 1256 } 1257 1258 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1259 *addr_type = hci_stack->le_own_addr_type; 1260 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1261 } 1262 1263 #ifdef ENABLE_LE_PERIPHERAL 1264 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1265 *addr_type = hci_stack->le_advertisements_own_addr_type; 1266 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1267 }; 1268 #endif 1269 1270 #ifdef ENABLE_LE_CENTRAL 1271 1272 /** 1273 * @brief Get own addr type and address used for LE connections (Central) 1274 */ 1275 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1276 *addr_type = hci_stack->le_connection_own_addr_type; 1277 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1278 } 1279 1280 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1281 1282 uint16_t offset = 3; 1283 uint8_t num_reports = packet[offset]; 1284 offset += 1; 1285 1286 uint16_t i; 1287 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1288 for (i=0; (i<num_reports) && (offset < size);i++){ 1289 // sanity checks on data_length: 1290 uint8_t data_length = packet[offset + 8]; 1291 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1292 if ((offset + 9u + data_length + 1u) > size) return; 1293 // setup event 1294 uint8_t event_size = 10u + data_length; 1295 uint16_t pos = 0; 1296 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1297 event[pos++] = event_size; 1298 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1299 offset += 8; 1300 pos += 8; 1301 event[pos++] = packet[offset + 1 + data_length]; // rssi 1302 event[pos++] = data_length; 1303 offset++; 1304 (void)memcpy(&event[pos], &packet[offset], data_length); 1305 pos += data_length; 1306 offset += data_length + 1u; // rssi 1307 hci_emit_event(event, pos, 1); 1308 } 1309 } 1310 1311 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1312 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1313 uint16_t offset = 3; 1314 uint8_t num_reports = packet[offset++]; 1315 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1316 uint8_t i; 1317 for (i=0; (i<num_reports) && (offset < size);i++){ 1318 // sanity checks on data_length: 1319 uint16_t data_length = packet[offset + 23]; 1320 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1321 if ((offset + 24u + data_length) > size) return; 1322 uint16_t event_type = little_endian_read_16(packet, offset); 1323 offset += 2; 1324 if ((event_type & 0x10) != 0) { 1325 // setup legacy event 1326 uint8_t legacy_event_type; 1327 switch (event_type){ 1328 case 0b0010011: 1329 // ADV_IND 1330 legacy_event_type = 0; 1331 break; 1332 case 0b0010101: 1333 // ADV_DIRECT_IND 1334 legacy_event_type = 1; 1335 break; 1336 case 0b0010010: 1337 // ADV_SCAN_IND 1338 legacy_event_type = 2; 1339 break; 1340 case 0b0010000: 1341 // ADV_NONCONN_IND 1342 legacy_event_type = 3; 1343 break; 1344 case 0b0011011: 1345 case 0b0011010: 1346 // SCAN_RSP 1347 legacy_event_type = 4; 1348 break; 1349 default: 1350 legacy_event_type = 0; 1351 break; 1352 } 1353 uint16_t pos = 0; 1354 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1355 event[pos++] = 10u + data_length; 1356 event[pos++] = legacy_event_type; 1357 // copy address type + address 1358 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1359 offset += 7; 1360 pos += 7; 1361 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1362 offset += 4; 1363 // copy rssi 1364 event[pos++] = packet[offset++]; 1365 // skip periodic advertising interval and direct address 1366 offset += 9; 1367 // copy data len + data; 1368 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1369 pos += 1 +data_length; 1370 offset += 1+ data_length; 1371 hci_emit_event(event, pos, 1); 1372 } else { 1373 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1374 uint8_t report_len = 24 + data_length; 1375 event[1] = report_len; 1376 little_endian_store_16(event, 2, event_type); 1377 memcpy(&event[4], &packet[offset], report_len); 1378 offset += report_len; 1379 hci_emit_event(event, 2 + report_len, 1); 1380 } 1381 } 1382 } 1383 #endif 1384 1385 #endif 1386 #endif 1387 1388 #ifdef ENABLE_BLE 1389 #ifdef ENABLE_LE_PERIPHERAL 1390 static void hci_update_advertisements_enabled_for_current_roles(void){ 1391 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1392 // get number of active le slave connections 1393 int num_slave_connections = 0; 1394 btstack_linked_list_iterator_t it; 1395 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1396 while (btstack_linked_list_iterator_has_next(&it)){ 1397 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1398 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1399 if (con->state != OPEN) continue; 1400 if (con->role != HCI_ROLE_SLAVE) continue; 1401 if (!hci_is_le_connection(con)) continue; 1402 num_slave_connections++; 1403 } 1404 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1405 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1406 } else { 1407 hci_stack->le_advertisements_enabled_for_current_roles = false; 1408 } 1409 } 1410 #endif 1411 #endif 1412 1413 #ifdef ENABLE_CLASSIC 1414 static void gap_run_set_local_name(void){ 1415 hci_reserve_packet_buffer(); 1416 uint8_t * packet = hci_stack->hci_packet_buffer; 1417 // construct HCI Command and send 1418 uint16_t opcode = hci_write_local_name.opcode; 1419 hci_stack->last_cmd_opcode = opcode; 1420 packet[0] = opcode & 0xff; 1421 packet[1] = opcode >> 8; 1422 packet[2] = DEVICE_NAME_LEN; 1423 memset(&packet[3], 0, DEVICE_NAME_LEN); 1424 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1425 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1426 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1427 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1428 // expand '00:00:00:00:00:00' in name with bd_addr 1429 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1430 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1431 } 1432 1433 static void gap_run_set_eir_data(void){ 1434 hci_reserve_packet_buffer(); 1435 uint8_t * packet = hci_stack->hci_packet_buffer; 1436 // construct HCI Command in-place and send 1437 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1438 hci_stack->last_cmd_opcode = opcode; 1439 uint16_t offset = 0; 1440 packet[offset++] = opcode & 0xff; 1441 packet[offset++] = opcode >> 8; 1442 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1443 packet[offset++] = 0; // FEC not required 1444 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1445 if (hci_stack->eir_data){ 1446 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1447 ad_context_t context; 1448 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1449 uint8_t data_type = ad_iterator_get_data_type(&context); 1450 uint8_t size = ad_iterator_get_data_len(&context); 1451 const uint8_t *data = ad_iterator_get_data(&context); 1452 // copy item 1453 packet[offset++] = size + 1; 1454 packet[offset++] = data_type; 1455 memcpy(&packet[offset], data, size); 1456 // update name item 1457 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1458 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1459 } 1460 offset += size; 1461 } 1462 } else { 1463 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1464 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1465 packet[offset++] = bytes_to_copy + 1; 1466 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1467 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1468 // expand '00:00:00:00:00:00' in name with bd_addr 1469 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1470 } 1471 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1472 } 1473 1474 static void hci_run_gap_tasks_classic(void){ 1475 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1476 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1477 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1478 return; 1479 } 1480 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1481 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1482 gap_run_set_local_name(); 1483 return; 1484 } 1485 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1486 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1487 gap_run_set_eir_data(); 1488 return; 1489 } 1490 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1491 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1492 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1493 return; 1494 } 1495 // write page scan activity 1496 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1497 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1498 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1499 return; 1500 } 1501 // write page scan type 1502 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1503 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1504 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1505 return; 1506 } 1507 // write page timeout 1508 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1509 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1510 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1511 return; 1512 } 1513 // send scan enable 1514 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1515 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1516 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1517 return; 1518 } 1519 // send write scan activity 1520 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1521 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1522 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1523 return; 1524 } 1525 } 1526 #endif 1527 1528 #ifndef HAVE_HOST_CONTROLLER_API 1529 1530 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1531 if (!hci_stack->config) return 0; 1532 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1533 // Limit baud rate for Broadcom chipsets to 3 mbps 1534 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1535 baud_rate = 3000000; 1536 } 1537 return baud_rate; 1538 } 1539 1540 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1541 UNUSED(ds); 1542 1543 switch (hci_stack->substate){ 1544 case HCI_INIT_W4_SEND_RESET: 1545 log_info("Resend HCI Reset"); 1546 hci_stack->substate = HCI_INIT_SEND_RESET; 1547 hci_stack->num_cmd_packets = 1; 1548 hci_run(); 1549 break; 1550 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1551 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1552 if (hci_stack->hci_transport->reset_link){ 1553 hci_stack->hci_transport->reset_link(); 1554 } 1555 1556 /* fall through */ 1557 1558 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1559 log_info("Resend HCI Reset - CSR Warm Boot"); 1560 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1561 hci_stack->num_cmd_packets = 1; 1562 hci_run(); 1563 break; 1564 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1565 if (hci_stack->hci_transport->set_baudrate){ 1566 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1567 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1568 hci_stack->hci_transport->set_baudrate(baud_rate); 1569 } 1570 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1571 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1572 if (hci_stack->hci_transport->reset_link){ 1573 log_info("Link Reset"); 1574 hci_stack->hci_transport->reset_link(); 1575 } 1576 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1577 hci_run(); 1578 } 1579 break; 1580 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1581 // otherwise continue 1582 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1583 hci_send_cmd(&hci_read_local_supported_commands); 1584 break; 1585 default: 1586 break; 1587 } 1588 } 1589 #endif 1590 1591 static void hci_initializing_next_state(void){ 1592 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1593 } 1594 1595 static void hci_init_done(void){ 1596 // done. tell the app 1597 log_info("hci_init_done -> HCI_STATE_WORKING"); 1598 hci_stack->state = HCI_STATE_WORKING; 1599 hci_emit_state(); 1600 } 1601 1602 // assumption: hci_can_send_command_packet_now() == true 1603 static void hci_initializing_run(void){ 1604 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1605 1606 if (!hci_can_send_command_packet_now()) return; 1607 1608 #ifndef HAVE_HOST_CONTROLLER_API 1609 bool need_baud_change = hci_stack->config 1610 && hci_stack->chipset 1611 && hci_stack->chipset->set_baudrate_command 1612 && hci_stack->hci_transport->set_baudrate 1613 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1614 #endif 1615 1616 switch (hci_stack->substate){ 1617 case HCI_INIT_SEND_RESET: 1618 hci_state_reset(); 1619 1620 #ifndef HAVE_HOST_CONTROLLER_API 1621 // prepare reset if command complete not received in 100ms 1622 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1623 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1624 btstack_run_loop_add_timer(&hci_stack->timeout); 1625 #endif 1626 // send command 1627 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1628 hci_send_cmd(&hci_reset); 1629 break; 1630 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1631 hci_send_cmd(&hci_read_local_version_information); 1632 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1633 break; 1634 1635 #ifndef HAVE_HOST_CONTROLLER_API 1636 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1637 hci_state_reset(); 1638 // prepare reset if command complete not received in 100ms 1639 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1640 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1641 btstack_run_loop_add_timer(&hci_stack->timeout); 1642 // send command 1643 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1644 hci_send_cmd(&hci_reset); 1645 break; 1646 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1647 hci_state_reset(); 1648 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1649 hci_send_cmd(&hci_reset); 1650 break; 1651 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1652 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1653 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1654 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1655 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1656 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1657 break; 1658 } 1659 case HCI_INIT_SET_BD_ADDR: 1660 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1661 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1662 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1663 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1664 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1665 break; 1666 case HCI_INIT_SEND_READ_LOCAL_NAME: 1667 #ifdef ENABLE_CLASSIC 1668 hci_send_cmd(&hci_read_local_name); 1669 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1670 break; 1671 #endif 1672 /* fall through */ 1673 1674 case HCI_INIT_SEND_BAUD_CHANGE: 1675 if (need_baud_change) { 1676 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1677 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1678 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1679 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1680 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1681 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1682 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1683 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1684 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1685 btstack_run_loop_add_timer(&hci_stack->timeout); 1686 } 1687 break; 1688 } 1689 1690 /* fall through */ 1691 1692 case HCI_INIT_CUSTOM_INIT: 1693 // Custom initialization 1694 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1695 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1696 bool send_cmd = false; 1697 switch (hci_stack->chipset_result){ 1698 case BTSTACK_CHIPSET_VALID_COMMAND: 1699 send_cmd = true; 1700 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1701 break; 1702 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1703 send_cmd = true; 1704 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1705 log_info("CSR Warm Boot"); 1706 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1707 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1708 btstack_run_loop_add_timer(&hci_stack->timeout); 1709 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1710 && hci_stack->config 1711 && hci_stack->chipset 1712 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1713 && hci_stack->hci_transport->set_baudrate 1714 && hci_transport_uart_get_main_baud_rate()){ 1715 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1716 } else { 1717 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1718 } 1719 break; 1720 default: 1721 break; 1722 } 1723 1724 if (send_cmd){ 1725 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1726 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1727 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1728 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1729 break; 1730 } 1731 log_info("Init script done"); 1732 1733 // Init script download on Broadcom chipsets causes: 1734 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1735 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1736 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1737 1738 // - baud rate to reset, restore UART baud rate if needed 1739 if (need_baud_change) { 1740 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1741 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1742 hci_stack->hci_transport->set_baudrate(baud_rate); 1743 } 1744 1745 uint16_t bcm_delay_ms = 300; 1746 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1747 // -> Work around: wait here. 1748 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1749 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1750 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1751 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1752 btstack_run_loop_add_timer(&hci_stack->timeout); 1753 break; 1754 } 1755 } 1756 #endif 1757 /* fall through */ 1758 1759 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1760 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1761 hci_send_cmd(&hci_read_local_supported_commands); 1762 break; 1763 case HCI_INIT_READ_BD_ADDR: 1764 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1765 hci_send_cmd(&hci_read_bd_addr); 1766 break; 1767 case HCI_INIT_READ_BUFFER_SIZE: 1768 // only read buffer size if supported 1769 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1770 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1771 hci_send_cmd(&hci_read_buffer_size); 1772 break; 1773 } 1774 1775 /* fall through */ 1776 1777 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1778 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1779 hci_send_cmd(&hci_read_local_supported_features); 1780 break; 1781 1782 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1783 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1784 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1785 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1786 break; 1787 case HCI_INIT_HOST_BUFFER_SIZE: 1788 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1789 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1790 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1791 break; 1792 #endif 1793 1794 case HCI_INIT_SET_EVENT_MASK: 1795 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1796 if (hci_le_supported()){ 1797 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1798 } else { 1799 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1800 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1801 } 1802 break; 1803 1804 case HCI_INIT_SET_EVENT_MASK_2: 1805 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2)){ 1806 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1807 // Encryption Change Event v2 - bit 25 1808 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1809 break; 1810 } 1811 1812 #ifdef ENABLE_CLASSIC 1813 /* fall through */ 1814 1815 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1816 if (hci_classic_supported() && gap_ssp_supported()){ 1817 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1818 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1819 break; 1820 } 1821 1822 /* fall through */ 1823 1824 case HCI_INIT_WRITE_INQUIRY_MODE: 1825 if (hci_classic_supported()){ 1826 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1827 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1828 break; 1829 } 1830 1831 /* fall through */ 1832 1833 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1834 // skip write secure connections host support if not supported or disabled 1835 if (hci_classic_supported() && hci_stack->secure_connections_enable 1836 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 1837 hci_stack->secure_connections_active = true; 1838 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1839 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 1840 break; 1841 } 1842 1843 /* fall through */ 1844 1845 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 1846 // skip set min encryption key size 1847 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 1848 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 1849 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 1850 break; 1851 } 1852 1853 #ifdef ENABLE_SCO_OVER_HCI 1854 /* fall through */ 1855 1856 // only sent if ENABLE_SCO_OVER_HCI is defined 1857 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1858 // skip write synchronous flow control if not supported 1859 if (hci_classic_supported() 1860 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 1861 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1862 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 1863 break; 1864 } 1865 /* fall through */ 1866 1867 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1868 // skip write default erroneous data reporting if not supported 1869 if (hci_classic_supported() 1870 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 1871 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1872 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 1873 break; 1874 } 1875 #endif 1876 1877 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 1878 /* fall through */ 1879 1880 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 1881 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 1882 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1883 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1884 #ifdef ENABLE_SCO_OVER_HCI 1885 log_info("BCM: Route SCO data via HCI transport"); 1886 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 1887 #endif 1888 #ifdef ENABLE_SCO_OVER_PCM 1889 log_info("BCM: Route SCO data via PCM interface"); 1890 #ifdef ENABLE_BCM_PCM_WBS 1891 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 1892 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 1893 #else 1894 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1895 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 1896 #endif 1897 #endif 1898 break; 1899 } 1900 #endif 1901 1902 #ifdef ENABLE_SCO_OVER_PCM 1903 /* fall through */ 1904 1905 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 1906 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1907 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 1908 log_info("BCM: Config PCM interface for I2S"); 1909 #ifdef ENABLE_BCM_PCM_WBS 1910 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 1911 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 1912 #else 1913 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1914 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 1915 #endif 1916 break; 1917 } 1918 #endif 1919 #endif 1920 1921 #ifdef ENABLE_BLE 1922 /* fall through */ 1923 1924 // LE INIT 1925 case HCI_INIT_LE_READ_BUFFER_SIZE: 1926 if (hci_le_supported()){ 1927 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 1928 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 1929 hci_send_cmd(&hci_le_read_buffer_size_v2); 1930 } else { 1931 hci_send_cmd(&hci_le_read_buffer_size); 1932 } 1933 break; 1934 } 1935 1936 /* fall through */ 1937 1938 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 1939 // skip write le host if not supported (e.g. on LE only EM9301) 1940 if (hci_le_supported() 1941 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 1942 // LE Supported Host = 1, Simultaneous Host = 0 1943 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 1944 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 1945 break; 1946 } 1947 1948 /* fall through */ 1949 1950 case HCI_INIT_LE_SET_EVENT_MASK: 1951 if (hci_le_supported()){ 1952 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 1953 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 1954 break; 1955 } 1956 #endif 1957 1958 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 1959 /* fall through */ 1960 1961 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 1962 if (hci_le_supported() 1963 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 1964 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 1965 hci_send_cmd(&hci_le_read_maximum_data_length); 1966 break; 1967 } 1968 1969 /* fall through */ 1970 1971 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 1972 if (hci_le_supported() 1973 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 1974 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 1975 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 1976 break; 1977 } 1978 #endif 1979 1980 #ifdef ENABLE_LE_CENTRAL 1981 /* fall through */ 1982 1983 case HCI_INIT_READ_WHITE_LIST_SIZE: 1984 if (hci_le_supported()){ 1985 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 1986 hci_send_cmd(&hci_le_read_white_list_size); 1987 break; 1988 } 1989 1990 #endif 1991 1992 #ifdef ENABLE_LE_PERIPHERAL 1993 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1994 /* fall through */ 1995 1996 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 1997 if (hci_extended_advertising_supported()){ 1998 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 1999 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2000 break; 2001 } 2002 #endif 2003 #endif 2004 /* fall through */ 2005 2006 case HCI_INIT_DONE: 2007 hci_stack->substate = HCI_INIT_DONE; 2008 // main init sequence complete 2009 #ifdef ENABLE_CLASSIC 2010 // check if initial Classic GAP Tasks are completed 2011 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2012 hci_run_gap_tasks_classic(); 2013 break; 2014 } 2015 #endif 2016 #ifdef ENABLE_BLE 2017 #ifdef ENABLE_LE_CENTRAL 2018 // check if initial LE GAP Tasks are completed 2019 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2020 hci_run_general_gap_le(); 2021 break; 2022 } 2023 #endif 2024 #endif 2025 hci_init_done(); 2026 break; 2027 2028 default: 2029 return; 2030 } 2031 } 2032 2033 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2034 bool command_completed = false; 2035 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2036 uint16_t opcode = little_endian_read_16(packet,3); 2037 if (opcode == hci_stack->last_cmd_opcode){ 2038 command_completed = true; 2039 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2040 } else { 2041 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2042 } 2043 } 2044 2045 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2046 uint8_t status = packet[2]; 2047 uint16_t opcode = little_endian_read_16(packet,4); 2048 if (opcode == hci_stack->last_cmd_opcode){ 2049 if (status){ 2050 command_completed = true; 2051 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2052 } else { 2053 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2054 } 2055 } else { 2056 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2057 } 2058 } 2059 #ifndef HAVE_HOST_CONTROLLER_API 2060 // Vendor == CSR 2061 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2062 // TODO: track actual command 2063 command_completed = true; 2064 } 2065 2066 // Vendor == Toshiba 2067 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2068 // TODO: track actual command 2069 command_completed = true; 2070 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2071 hci_stack->num_cmd_packets = 1; 2072 } 2073 #endif 2074 2075 return command_completed; 2076 } 2077 2078 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2079 2080 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2081 2082 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2083 2084 #ifndef HAVE_HOST_CONTROLLER_API 2085 2086 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2087 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2088 // 2089 // HCI Reset 2090 // Timeout 100 ms 2091 // HCI Reset 2092 // Command Complete Reset 2093 // HCI Read Local Version Information 2094 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2095 // hang... 2096 // 2097 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2098 if (!command_completed 2099 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2100 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2101 2102 uint16_t opcode = little_endian_read_16(packet,3); 2103 if (opcode == hci_reset.opcode){ 2104 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2105 return; 2106 } 2107 } 2108 2109 // CSR & H5 2110 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2111 if (!command_completed 2112 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2113 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2114 2115 uint16_t opcode = little_endian_read_16(packet,3); 2116 if (opcode == hci_reset.opcode){ 2117 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2118 return; 2119 } 2120 } 2121 2122 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2123 // fix: Correct substate and behave as command below 2124 if (command_completed){ 2125 switch (hci_stack->substate){ 2126 case HCI_INIT_SEND_RESET: 2127 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2128 break; 2129 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2130 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2131 break; 2132 default: 2133 break; 2134 } 2135 } 2136 2137 #endif 2138 2139 if (!command_completed) return; 2140 2141 bool need_baud_change = false; 2142 bool need_addr_change = false; 2143 2144 #ifndef HAVE_HOST_CONTROLLER_API 2145 need_baud_change = hci_stack->config 2146 && hci_stack->chipset 2147 && hci_stack->chipset->set_baudrate_command 2148 && hci_stack->hci_transport->set_baudrate 2149 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2150 2151 need_addr_change = hci_stack->custom_bd_addr_set 2152 && hci_stack->chipset 2153 && hci_stack->chipset->set_bd_addr_command; 2154 #endif 2155 2156 switch(hci_stack->substate){ 2157 2158 #ifndef HAVE_HOST_CONTROLLER_API 2159 case HCI_INIT_SEND_RESET: 2160 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2161 // fix: just correct substate and behave as command below 2162 2163 /* fall through */ 2164 #endif 2165 2166 case HCI_INIT_W4_SEND_RESET: 2167 btstack_run_loop_remove_timer(&hci_stack->timeout); 2168 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2169 return; 2170 2171 #ifndef HAVE_HOST_CONTROLLER_API 2172 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2173 // for STLC2500D, baud rate change already happened. 2174 // for others, baud rate gets changed now 2175 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2176 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2177 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2178 hci_stack->hci_transport->set_baudrate(baud_rate); 2179 } 2180 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2181 return; 2182 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2183 btstack_run_loop_remove_timer(&hci_stack->timeout); 2184 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2185 return; 2186 case HCI_INIT_W4_CUSTOM_INIT: 2187 // repeat custom init 2188 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2189 return; 2190 #endif 2191 2192 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2193 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2194 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2195 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2196 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2197 return; 2198 } 2199 if (need_addr_change){ 2200 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2201 return; 2202 } 2203 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2204 return; 2205 #ifndef HAVE_HOST_CONTROLLER_API 2206 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2207 if (need_baud_change){ 2208 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2209 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2210 hci_stack->hci_transport->set_baudrate(baud_rate); 2211 } 2212 if (need_addr_change){ 2213 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2214 return; 2215 } 2216 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2217 return; 2218 case HCI_INIT_W4_SET_BD_ADDR: 2219 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2220 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2221 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2222 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2223 return; 2224 } 2225 // skipping st warm boot 2226 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2227 return; 2228 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2229 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2230 return; 2231 #endif 2232 2233 case HCI_INIT_DONE: 2234 // set state if we came here by fall through 2235 hci_stack->substate = HCI_INIT_DONE; 2236 return; 2237 2238 default: 2239 break; 2240 } 2241 hci_initializing_next_state(); 2242 } 2243 2244 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2245 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2246 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2247 // check if we have been aware of the HCI connection 2248 switch (conn->state){ 2249 case SENT_CREATE_CONNECTION: 2250 case RECEIVED_CONNECTION_REQUEST: 2251 break; 2252 default: 2253 return; 2254 } 2255 2256 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2257 bd_addr_t bd_address; 2258 (void)memcpy(&bd_address, conn->address, 6); 2259 2260 #ifdef ENABLE_CLASSIC 2261 // cache needed data 2262 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2263 #endif 2264 2265 // connection failed, remove entry 2266 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2267 btstack_memory_hci_connection_free( conn ); 2268 2269 #ifdef ENABLE_CLASSIC 2270 // notify client if dedicated bonding 2271 if (notify_dedicated_bonding_failed){ 2272 log_info("hci notify_dedicated_bonding_failed"); 2273 hci_emit_dedicated_bonding_result(bd_address, status); 2274 } 2275 2276 // if authentication error, also delete link key 2277 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2278 gap_drop_link_key_for_bd_addr(bd_address); 2279 } 2280 #else 2281 UNUSED(status); 2282 #endif 2283 } 2284 2285 #ifdef ENABLE_CLASSIC 2286 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2287 // SSP Controller 2288 if (features[6] & (1 << 3)){ 2289 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2290 } 2291 // eSCO 2292 if (features[3] & (1<<7)){ 2293 conn->remote_supported_features[0] |= 1; 2294 } 2295 // Extended features 2296 if (features[7] & (1<<7)){ 2297 conn->remote_supported_features[0] |= 2; 2298 } 2299 } 2300 2301 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2302 // SSP Host 2303 if (features[0] & (1 << 0)){ 2304 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2305 } 2306 // SC Host 2307 if (features[0] & (1 << 3)){ 2308 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2309 } 2310 } 2311 2312 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2313 // SC Controller 2314 if (features[1] & (1 << 0)){ 2315 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2316 } 2317 } 2318 2319 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2320 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2321 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2322 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2323 if (conn->bonding_flags & BONDING_DEDICATED){ 2324 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2325 } 2326 } 2327 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2328 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2329 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2330 } 2331 2332 #endif 2333 2334 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2335 // handle BT initialization 2336 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2337 hci_initializing_event_handler(packet, size); 2338 } 2339 2340 // help with BT sleep 2341 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2342 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2343 && (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_scan_enable))) { 2344 hci_initializing_next_state(); 2345 } 2346 } 2347 2348 #ifdef ENABLE_CLASSIC 2349 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2350 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2351 conn->encryption_key_size = encryption_key_size; 2352 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2353 2354 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2355 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2356 conn->bonding_flags &= ~BONDING_DEDICATED; 2357 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2358 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2359 return; 2360 } 2361 2362 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2363 conn->requested_security_level = LEVEL_0; 2364 hci_emit_security_level(conn->con_handle, security_level); 2365 return; 2366 } 2367 2368 // Request remote features if not already done 2369 hci_trigger_remote_features_for_connection(conn); 2370 2371 // Request Authentication if not already done 2372 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2373 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2374 } 2375 #endif 2376 2377 static void hci_store_local_supported_commands(const uint8_t * packet){ 2378 // create mapping table 2379 #define X(name, offset, bit) { offset, bit }, 2380 static struct { 2381 uint8_t byte_offset; 2382 uint8_t bit_position; 2383 } supported_hci_commands_map [] = { 2384 SUPPORTED_HCI_COMMANDS 2385 }; 2386 #undef X 2387 2388 // create names for debug purposes 2389 #ifdef ENABLE_LOG_DEBUG 2390 #define X(name, offset, bit) #name, 2391 static const char * command_names[] = { 2392 SUPPORTED_HCI_COMMANDS 2393 }; 2394 #undef X 2395 #endif 2396 2397 hci_stack->local_supported_commands = 0; 2398 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2399 uint16_t i; 2400 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2401 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2402 #ifdef ENABLE_LOG_DEBUG 2403 log_info("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2404 #else 2405 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2406 #endif 2407 hci_stack->local_supported_commands |= (1LU << i); 2408 } 2409 } 2410 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2411 } 2412 2413 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2414 UNUSED(size); 2415 2416 uint16_t manufacturer; 2417 #ifdef ENABLE_CLASSIC 2418 hci_con_handle_t handle; 2419 hci_connection_t * conn; 2420 uint8_t status; 2421 #endif 2422 // get num cmd packets - limit to 1 to reduce complexity 2423 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2424 2425 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2426 switch (opcode){ 2427 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2428 if (packet[5]) break; 2429 // terminate, name 248 chars 2430 packet[6+248] = 0; 2431 log_info("local name: %s", &packet[6]); 2432 break; 2433 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2434 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2435 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2436 uint16_t acl_len = little_endian_read_16(packet, 6); 2437 uint16_t sco_len = packet[8]; 2438 2439 // determine usable ACL/SCO payload size 2440 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2441 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2442 2443 hci_stack->acl_packets_total_num = (uint8_t) little_endian_read_16(packet, 9); 2444 hci_stack->sco_packets_total_num = (uint8_t) little_endian_read_16(packet, 11); 2445 2446 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2447 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2448 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2449 } 2450 break; 2451 case HCI_OPCODE_HCI_READ_RSSI: 2452 if (packet[5] == ERROR_CODE_SUCCESS){ 2453 uint8_t event[5]; 2454 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2455 event[1] = 3; 2456 (void)memcpy(&event[2], &packet[6], 3); 2457 hci_emit_event(event, sizeof(event), 1); 2458 } 2459 break; 2460 #ifdef ENABLE_BLE 2461 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2462 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2463 hci_stack->le_iso_packets_total_num = packet[11]; 2464 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2465 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2466 2467 /* fall through */ 2468 2469 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2470 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2471 hci_stack->le_acl_packets_total_num = packet[8]; 2472 // determine usable ACL payload size 2473 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2474 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2475 } 2476 log_info("hci_le_read_buffer_size: acl size %u, acl count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2477 break; 2478 #endif 2479 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2480 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2481 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2482 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2483 log_info("hci_le_read_maximum_data_length: tx octets %u, tx time %u us", hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2484 break; 2485 #endif 2486 #ifdef ENABLE_LE_CENTRAL 2487 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2488 hci_stack->le_whitelist_capacity = packet[6]; 2489 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2490 break; 2491 #endif 2492 #ifdef ENABLE_LE_PERIPHERAL 2493 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2494 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2495 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2496 break; 2497 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2498 if (hci_stack->le_advertising_set_in_current_command != 0) { 2499 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2500 hci_stack->le_advertising_set_in_current_command = 0; 2501 if (advertising_set == NULL) break; 2502 uint8_t adv_status = packet[6]; 2503 uint8_t tx_power = packet[7]; 2504 uint8_t event[] = { HCI_EVENT_META_GAP, 4, GAP_SUBEVENT_ADVERTISING_SET_INSTALLED, hci_stack->le_advertising_set_in_current_command, adv_status, tx_power }; 2505 if (adv_status == 0){ 2506 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2507 } 2508 hci_emit_event(event, sizeof(event), 1); 2509 } 2510 break; 2511 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2512 if (hci_stack->le_advertising_set_in_current_command != 0) { 2513 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2514 hci_stack->le_advertising_set_in_current_command = 0; 2515 if (advertising_set == NULL) break; 2516 uint8_t adv_status = packet[5]; 2517 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2518 if (adv_status == 0){ 2519 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2520 } 2521 hci_emit_event(event, sizeof(event), 1); 2522 } 2523 break; 2524 #endif 2525 #endif 2526 case HCI_OPCODE_HCI_READ_BD_ADDR: 2527 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2528 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2529 #ifdef ENABLE_CLASSIC 2530 if (hci_stack->link_key_db){ 2531 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2532 } 2533 #endif 2534 break; 2535 #ifdef ENABLE_CLASSIC 2536 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2537 hci_emit_discoverable_enabled(hci_stack->discoverable); 2538 break; 2539 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2540 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2541 if (status == ERROR_CODE_SUCCESS) { 2542 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2543 } else { 2544 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2545 } 2546 break; 2547 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2548 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2549 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2550 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2551 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2552 hci_emit_event(event, sizeof(event), 1); 2553 } 2554 break; 2555 #endif 2556 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2557 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2558 2559 #ifdef ENABLE_CLASSIC 2560 // determine usable ACL packet types based on host buffer size and supported features 2561 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2562 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2563 #endif 2564 // Classic/LE 2565 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2566 break; 2567 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2568 manufacturer = little_endian_read_16(packet, 10); 2569 // map Cypress to Broadcom 2570 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2571 log_info("Treat Cypress as Broadcom"); 2572 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2573 little_endian_store_16(packet, 10, manufacturer); 2574 } 2575 hci_stack->manufacturer = manufacturer; 2576 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2577 break; 2578 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2579 hci_store_local_supported_commands(packet); 2580 break; 2581 #ifdef ENABLE_CLASSIC 2582 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2583 if (packet[5]) return; 2584 hci_stack->synchronous_flow_control_enabled = 1; 2585 break; 2586 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2587 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2588 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2589 conn = hci_connection_for_handle(handle); 2590 if (conn != NULL) { 2591 uint8_t key_size = 0; 2592 if (status == 0){ 2593 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2594 log_info("Handle %04x key Size: %u", handle, key_size); 2595 } else { 2596 key_size = 1; 2597 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2598 } 2599 hci_handle_read_encryption_key_size_complete(conn, key_size); 2600 } 2601 break; 2602 // assert pairing complete event is emitted. 2603 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2604 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2605 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2606 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2607 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2608 // lookup connection by gap pairing addr 2609 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2610 if (conn == NULL) break; 2611 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2612 break; 2613 2614 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2615 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2616 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2617 uint8_t event[67]; 2618 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2619 event[1] = 65; 2620 (void)memset(&event[2], 0, 65); 2621 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2622 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2623 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2624 event[2] = 3; 2625 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2626 } else { 2627 event[2] = 1; 2628 } 2629 } 2630 hci_emit_event(event, sizeof(event), 0); 2631 break; 2632 } 2633 2634 // note: only needed if user does not provide OOB data 2635 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2636 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2637 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2638 if (conn == NULL) break; 2639 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2640 break; 2641 #endif 2642 #endif 2643 default: 2644 break; 2645 } 2646 } 2647 2648 #ifdef ENABLE_BLE 2649 static void event_handle_le_connection_complete(const uint8_t * packet){ 2650 bd_addr_t addr; 2651 bd_addr_type_t addr_type; 2652 hci_connection_t * conn; 2653 2654 // Connection management 2655 reverse_bd_addr(&packet[8], addr); 2656 addr_type = (bd_addr_type_t)packet[7]; 2657 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2658 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2659 2660 #ifdef ENABLE_LE_CENTRAL 2661 // handle error: error is reported only to the initiator -> outgoing connection 2662 if (packet[3]){ 2663 2664 // handle cancelled outgoing connection 2665 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2666 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2667 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2668 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2669 // reset state 2670 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2671 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2672 // get outgoing connection conn struct for direct connect 2673 conn = gap_get_outgoing_connection(); 2674 } 2675 2676 // outgoing le connection establishment is done 2677 if (conn){ 2678 // remove entry 2679 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2680 btstack_memory_hci_connection_free( conn ); 2681 } 2682 return; 2683 } 2684 #endif 2685 2686 // on success, both hosts receive connection complete event 2687 if (packet[6] == HCI_ROLE_MASTER){ 2688 #ifdef ENABLE_LE_CENTRAL 2689 // if we're master on an le connection, it was an outgoing connection and we're done with it 2690 // note: no hci_connection_t object exists yet for connect with whitelist 2691 if (hci_is_le_connection_type(addr_type)){ 2692 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2693 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2694 } 2695 #endif 2696 } else { 2697 #ifdef ENABLE_LE_PERIPHERAL 2698 // if we're slave, it was an incoming connection, advertisements have stopped 2699 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 2700 #endif 2701 } 2702 2703 // LE connections are auto-accepted, so just create a connection if there isn't one already 2704 if (!conn){ 2705 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2706 } 2707 2708 // no memory, sorry. 2709 if (!conn){ 2710 return; 2711 } 2712 2713 conn->state = OPEN; 2714 conn->role = packet[6]; 2715 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 2716 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 2717 2718 #ifdef ENABLE_LE_PERIPHERAL 2719 if (packet[6] == HCI_ROLE_SLAVE){ 2720 hci_update_advertisements_enabled_for_current_roles(); 2721 } 2722 #endif 2723 2724 // init unenhanced att bearer mtu 2725 conn->att_connection.mtu = ATT_DEFAULT_MTU; 2726 conn->att_connection.mtu_exchanged = false; 2727 2728 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 2729 2730 // restart timer 2731 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2732 // btstack_run_loop_add_timer(&conn->timeout); 2733 2734 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2735 2736 hci_emit_nr_connections_changed(); 2737 } 2738 #endif 2739 2740 #ifdef ENABLE_CLASSIC 2741 static bool hci_ssp_security_level_possible_for_io_cap(gap_security_level_t level, uint8_t io_cap_local, uint8_t io_cap_remote){ 2742 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 2743 // LEVEL_4 is tested by l2cap 2744 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 2745 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 2746 if (level >= LEVEL_3){ 2747 // MITM not possible without keyboard or display 2748 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2749 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2750 2751 // MITM possible if one side has keyboard and the other has keyboard or display 2752 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2753 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2754 2755 // MITM not possible if one side has only display and other side has no keyboard 2756 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2757 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2758 } 2759 // LEVEL 2 requires SSP, which is a given 2760 return true; 2761 } 2762 2763 static bool btstack_is_null(uint8_t * data, uint16_t size){ 2764 uint16_t i; 2765 for (i=0; i < size ; i++){ 2766 if (data[i] != 0) { 2767 return false; 2768 } 2769 } 2770 return true; 2771 } 2772 2773 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 2774 // get requested security level 2775 gap_security_level_t requested_security_level = conn->requested_security_level; 2776 if (hci_stack->gap_secure_connections_only_mode){ 2777 requested_security_level = LEVEL_4; 2778 } 2779 2780 // assess security: LEVEL 4 requires SC 2781 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 2782 if ((requested_security_level == LEVEL_4) && 2783 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 2784 !hci_remote_sc_enabled(conn)){ 2785 log_info("Level 4 required, but SC not supported -> abort"); 2786 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2787 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2788 return; 2789 } 2790 2791 // assess security based on io capabilities 2792 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 2793 // responder: fully validate io caps of both sides as well as OOB data 2794 bool security_possible = false; 2795 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 2796 2797 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2798 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 2799 // so we merge the OOB data availability 2800 uint8_t have_oob_data = conn->io_cap_response_oob_data; 2801 if (conn->classic_oob_c_192 != NULL){ 2802 have_oob_data |= 1; 2803 } 2804 if (conn->classic_oob_c_256 != NULL){ 2805 have_oob_data |= 2; 2806 } 2807 // for up to Level 3, either P-192 as well as P-256 will do 2808 // if we don't support SC, then a) conn->classic_oob_c_256 will be NULL and b) remote should not report P-256 available 2809 // if remote does not SC, we should not receive P-256 data either 2810 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 2811 security_possible = true; 2812 } 2813 // for Level 4, P-256 is needed 2814 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 2815 security_possible = true; 2816 } 2817 #endif 2818 2819 if (security_possible == false){ 2820 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 2821 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2822 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2823 return; 2824 } 2825 } else { 2826 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 2827 #ifndef ENABLE_CLASSIC_PAIRING_OOB 2828 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 2829 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 2830 log_info("Level 3+ required, but no input/output -> abort"); 2831 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2832 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2833 return; 2834 } 2835 #endif 2836 #endif 2837 } 2838 2839 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 2840 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 2841 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 2842 } else { 2843 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2844 } 2845 #endif 2846 } 2847 2848 #endif 2849 2850 static void event_handler(uint8_t *packet, uint16_t size){ 2851 2852 uint16_t event_length = packet[1]; 2853 2854 // assert packet is complete 2855 if (size != (event_length + 2u)){ 2856 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 2857 return; 2858 } 2859 2860 bd_addr_type_t addr_type; 2861 hci_con_handle_t handle; 2862 hci_connection_t * conn; 2863 int i; 2864 int create_connection_cmd; 2865 2866 #ifdef ENABLE_CLASSIC 2867 hci_link_type_t link_type; 2868 bd_addr_t addr; 2869 #endif 2870 2871 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 2872 2873 switch (hci_event_packet_get_type(packet)) { 2874 2875 case HCI_EVENT_COMMAND_COMPLETE: 2876 handle_command_complete_event(packet, size); 2877 break; 2878 2879 case HCI_EVENT_COMMAND_STATUS: 2880 // get num cmd packets - limit to 1 to reduce complexity 2881 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2882 2883 // check command status to detected failed outgoing connections 2884 create_connection_cmd = 0; 2885 #ifdef ENABLE_CLASSIC 2886 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_create_connection)){ 2887 create_connection_cmd = 1; 2888 } 2889 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_accept_synchronous_connection)){ 2890 create_connection_cmd = 1; 2891 } 2892 #endif 2893 #ifdef ENABLE_LE_CENTRAL 2894 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_le_create_connection)){ 2895 create_connection_cmd = 1; 2896 } 2897 #endif 2898 if (create_connection_cmd) { 2899 uint8_t status = hci_event_command_status_get_status(packet); 2900 addr_type = hci_stack->outgoing_addr_type; 2901 conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2902 log_info("command status (create connection), status %x, connection %p, addr %s, type %x", status, conn, bd_addr_to_str(hci_stack->outgoing_addr), addr_type); 2903 2904 // reset outgoing address info 2905 memset(hci_stack->outgoing_addr, 0, 6); 2906 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2907 2908 // on error 2909 if (status != ERROR_CODE_SUCCESS){ 2910 #ifdef ENABLE_LE_CENTRAL 2911 if (hci_is_le_connection_type(addr_type)){ 2912 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2913 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2914 } 2915 #endif 2916 // error => outgoing connection failed 2917 if (conn != NULL){ 2918 hci_handle_connection_failed(conn, status); 2919 } 2920 } 2921 } 2922 2923 #ifdef ENABLE_CLASSIC 2924 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_inquiry)){ 2925 uint8_t status = hci_event_command_status_get_status(packet); 2926 log_info("command status (inquiry), status %x", status); 2927 if (status == ERROR_CODE_SUCCESS) { 2928 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2929 } else { 2930 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2931 } 2932 } 2933 #endif 2934 break; 2935 2936 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 2937 if (size < 3) return; 2938 uint16_t num_handles = packet[2]; 2939 if (size != (3u + num_handles * 4u)) return; 2940 uint16_t offset = 3; 2941 for (i=0; i<num_handles;i++){ 2942 handle = little_endian_read_16(packet, offset) & 0x0fffu; 2943 offset += 2u; 2944 uint16_t num_packets = little_endian_read_16(packet, offset); 2945 offset += 2u; 2946 2947 conn = hci_connection_for_handle(handle); 2948 if (!conn){ 2949 log_error("hci_number_completed_packet lists unused con handle %u", handle); 2950 continue; 2951 } 2952 2953 if (conn->num_packets_sent >= num_packets){ 2954 conn->num_packets_sent -= num_packets; 2955 } else { 2956 log_error("hci_number_completed_packets, more packet slots freed then sent."); 2957 conn->num_packets_sent = 0; 2958 } 2959 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 2960 2961 #ifdef ENABLE_CLASSIC 2962 // For SCO, we do the can_send_now_check here 2963 hci_notify_if_sco_can_send_now(); 2964 #endif 2965 } 2966 break; 2967 } 2968 2969 #ifdef ENABLE_CLASSIC 2970 case HCI_EVENT_FLUSH_OCCURRED: 2971 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 2972 handle = hci_event_flush_occurred_get_handle(packet); 2973 conn = hci_connection_for_handle(handle); 2974 if (conn) { 2975 log_info("Flush occurred, disconnect 0x%04x", handle); 2976 conn->state = SEND_DISCONNECT; 2977 } 2978 break; 2979 2980 case HCI_EVENT_INQUIRY_COMPLETE: 2981 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 2982 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2983 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2984 hci_emit_event(event, sizeof(event), 1); 2985 } 2986 break; 2987 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 2988 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 2989 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 2990 } 2991 break; 2992 case HCI_EVENT_CONNECTION_REQUEST: 2993 reverse_bd_addr(&packet[2], addr); 2994 link_type = (hci_link_type_t) packet[11]; 2995 2996 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 2997 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 2998 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 2999 bd_addr_copy(hci_stack->decline_addr, addr); 3000 break; 3001 } 3002 3003 if (hci_stack->gap_classic_accept_callback != NULL){ 3004 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3005 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3006 bd_addr_copy(hci_stack->decline_addr, addr); 3007 break; 3008 } 3009 } 3010 3011 // TODO: eval COD 8-10 3012 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3013 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3014 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3015 if (!conn) { 3016 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3017 } 3018 if (!conn) { 3019 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3020 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3021 bd_addr_copy(hci_stack->decline_addr, addr); 3022 hci_run(); 3023 // avoid event to higher layer 3024 return; 3025 } 3026 conn->role = HCI_ROLE_SLAVE; 3027 conn->state = RECEIVED_CONNECTION_REQUEST; 3028 // store info about eSCO 3029 if (link_type == HCI_LINK_TYPE_ESCO){ 3030 conn->remote_supported_features[0] |= 1; 3031 } 3032 hci_run(); 3033 break; 3034 3035 case HCI_EVENT_CONNECTION_COMPLETE: 3036 // Connection management 3037 reverse_bd_addr(&packet[5], addr); 3038 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3039 addr_type = BD_ADDR_TYPE_ACL; 3040 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3041 if (conn) { 3042 if (!packet[2]){ 3043 conn->state = OPEN; 3044 conn->con_handle = little_endian_read_16(packet, 3); 3045 3046 // trigger write supervision timeout if we're master 3047 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3048 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3049 } 3050 3051 // trigger write automatic flush timeout 3052 if (hci_stack->automatic_flush_timeout != 0){ 3053 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3054 } 3055 3056 // restart timer 3057 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3058 btstack_run_loop_add_timer(&conn->timeout); 3059 3060 // trigger remote features for dedicated bonding 3061 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3062 hci_trigger_remote_features_for_connection(conn); 3063 } 3064 3065 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3066 3067 hci_emit_nr_connections_changed(); 3068 } else { 3069 // connection failed 3070 hci_handle_connection_failed(conn, packet[2]); 3071 } 3072 } 3073 break; 3074 3075 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3076 reverse_bd_addr(&packet[5], addr); 3077 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3078 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3079 if (packet[2]){ 3080 // connection failed 3081 if (conn){ 3082 hci_handle_connection_failed(conn, packet[2]); 3083 } 3084 break; 3085 } 3086 if (!conn) { 3087 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3088 } 3089 if (!conn) { 3090 break; 3091 } 3092 conn->state = OPEN; 3093 conn->con_handle = little_endian_read_16(packet, 3); 3094 3095 #ifdef ENABLE_SCO_OVER_HCI 3096 // update SCO 3097 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3098 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3099 } 3100 // trigger can send now 3101 if (hci_have_usb_transport()){ 3102 hci_stack->sco_can_send_now = true; 3103 } 3104 #endif 3105 #ifdef HAVE_SCO_TRANSPORT 3106 // configure sco transport 3107 if (hci_stack->sco_transport != NULL){ 3108 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3109 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3110 } 3111 #endif 3112 break; 3113 3114 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3115 handle = little_endian_read_16(packet, 3); 3116 conn = hci_connection_for_handle(handle); 3117 if (!conn) break; 3118 if (!packet[2]){ 3119 const uint8_t * features = &packet[5]; 3120 hci_handle_remote_features_page_0(conn, features); 3121 3122 // read extended features if possible 3123 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3124 && ((conn->remote_supported_features[0] & 2) != 0)) { 3125 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3126 break; 3127 } 3128 } 3129 hci_handle_remote_features_received(conn); 3130 break; 3131 3132 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3133 handle = little_endian_read_16(packet, 3); 3134 conn = hci_connection_for_handle(handle); 3135 if (!conn) break; 3136 // status = ok, page = 1 3137 if (!packet[2]) { 3138 uint8_t page_number = packet[5]; 3139 uint8_t maximum_page_number = packet[6]; 3140 const uint8_t * features = &packet[7]; 3141 bool done = false; 3142 switch (page_number){ 3143 case 1: 3144 hci_handle_remote_features_page_1(conn, features); 3145 if (maximum_page_number >= 2){ 3146 // get Secure Connections (Controller) from Page 2 if available 3147 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3148 } else { 3149 // otherwise, assume SC (Controller) == SC (Host) 3150 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3151 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3152 } 3153 done = true; 3154 } 3155 break; 3156 case 2: 3157 hci_handle_remote_features_page_2(conn, features); 3158 done = true; 3159 break; 3160 default: 3161 break; 3162 } 3163 if (!done) break; 3164 } 3165 hci_handle_remote_features_received(conn); 3166 break; 3167 3168 case HCI_EVENT_LINK_KEY_REQUEST: 3169 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3170 hci_event_link_key_request_get_bd_addr(packet, addr); 3171 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3172 if (!conn) break; 3173 3174 // lookup link key in db if not cached 3175 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3176 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3177 } 3178 3179 // response sent by hci_run() 3180 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3181 #endif 3182 break; 3183 3184 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3185 hci_event_link_key_request_get_bd_addr(packet, addr); 3186 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3187 if (!conn) break; 3188 3189 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3190 3191 // CVE-2020-26555: ignore NULL link key 3192 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3193 if (btstack_is_null(&packet[8], 16)) break; 3194 3195 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3196 // Change Connection Encryption keeps link key type 3197 if (link_key_type != CHANGED_COMBINATION_KEY){ 3198 conn->link_key_type = link_key_type; 3199 } 3200 3201 // cache link key. link keys stored in little-endian format for legacy reasons 3202 memcpy(&conn->link_key, &packet[8], 16); 3203 3204 // only store link key: 3205 // - if bondable enabled 3206 if (hci_stack->bondable == false) break; 3207 // - if security level sufficient 3208 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3209 // - for SSP, also check if remote side requested bonding as well 3210 if (conn->link_key_type != COMBINATION_KEY){ 3211 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3212 if (!remote_bonding){ 3213 break; 3214 } 3215 } 3216 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3217 break; 3218 } 3219 3220 case HCI_EVENT_PIN_CODE_REQUEST: 3221 hci_event_pin_code_request_get_bd_addr(packet, addr); 3222 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3223 if (!conn) break; 3224 3225 hci_pairing_started(conn, false); 3226 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3227 if (!hci_stack->bondable ){ 3228 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3229 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3230 hci_run(); 3231 return; 3232 } 3233 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3234 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3235 log_info("Level 4 required, but SC not supported -> abort"); 3236 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3237 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3238 hci_run(); 3239 return; 3240 } 3241 break; 3242 3243 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3244 hci_event_io_capability_response_get_bd_addr(packet, addr); 3245 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3246 if (!conn) break; 3247 3248 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3249 hci_pairing_started(conn, true); 3250 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3251 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3252 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3253 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3254 #endif 3255 break; 3256 3257 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3258 hci_event_io_capability_response_get_bd_addr(packet, addr); 3259 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3260 if (!conn) break; 3261 3262 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3263 hci_connection_timestamp(conn); 3264 hci_pairing_started(conn, true); 3265 break; 3266 3267 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3268 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3269 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3270 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3271 if (!conn) break; 3272 3273 hci_connection_timestamp(conn); 3274 3275 hci_pairing_started(conn, true); 3276 3277 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3278 break; 3279 #endif 3280 3281 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3282 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3283 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3284 if (!conn) break; 3285 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3286 if (hci_stack->ssp_auto_accept){ 3287 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3288 }; 3289 } else { 3290 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3291 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3292 // don't forward event to app 3293 hci_run(); 3294 return; 3295 } 3296 break; 3297 3298 case HCI_EVENT_USER_PASSKEY_REQUEST: 3299 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3300 if (hci_stack->ssp_auto_accept){ 3301 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3302 }; 3303 break; 3304 3305 case HCI_EVENT_MODE_CHANGE: 3306 handle = hci_event_mode_change_get_handle(packet); 3307 conn = hci_connection_for_handle(handle); 3308 if (!conn) break; 3309 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3310 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3311 break; 3312 #endif 3313 3314 case HCI_EVENT_ENCRYPTION_CHANGE: 3315 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3316 handle = hci_event_encryption_change_get_connection_handle(packet); 3317 conn = hci_connection_for_handle(handle); 3318 if (!conn) break; 3319 if (hci_event_encryption_change_get_status(packet) == 0u) { 3320 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3321 if (encryption_enabled){ 3322 if (hci_is_le_connection(conn)){ 3323 // For LE, we accept connection as encrypted 3324 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3325 } 3326 #ifdef ENABLE_CLASSIC 3327 else { 3328 3329 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3330 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3331 bool connected_uses_aes_ccm = encryption_enabled == 2; 3332 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3333 log_info("SC during pairing, but only E0 now -> abort"); 3334 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3335 break; 3336 } 3337 3338 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3339 if (connected_uses_aes_ccm){ 3340 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3341 } 3342 3343 #ifdef ENABLE_TESTING_SUPPORT 3344 // work around for issue with PTS dongle 3345 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3346 #endif 3347 // validate encryption key size 3348 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3349 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3350 // already got encryption key size 3351 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3352 } else { 3353 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3354 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3355 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3356 } else { 3357 // if not, pretend everything is perfect 3358 hci_handle_read_encryption_key_size_complete(conn, 16); 3359 } 3360 } 3361 } 3362 #endif 3363 } else { 3364 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3365 } 3366 } else { 3367 uint8_t status = hci_event_encryption_change_get_status(packet); 3368 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3369 conn->bonding_flags &= ~BONDING_DEDICATED; 3370 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3371 conn->bonding_status = status; 3372 } 3373 } 3374 3375 break; 3376 3377 #ifdef ENABLE_CLASSIC 3378 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3379 handle = hci_event_authentication_complete_get_connection_handle(packet); 3380 conn = hci_connection_for_handle(handle); 3381 if (!conn) break; 3382 3383 // clear authentication active flag 3384 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3385 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3386 3387 // authenticated only if auth status == 0 3388 if (hci_event_authentication_complete_get_status(packet) == 0){ 3389 // authenticated 3390 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3391 3392 // If not already encrypted, start encryption 3393 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3394 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3395 break; 3396 } 3397 } 3398 3399 // emit updated security level 3400 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3401 break; 3402 3403 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3404 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3405 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3406 if (!conn) break; 3407 3408 // treat successfully paired connection as authenticated 3409 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3410 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3411 } 3412 3413 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3414 break; 3415 #endif 3416 3417 // HCI_EVENT_DISCONNECTION_COMPLETE 3418 // has been split, to first notify stack before shutting connection down 3419 // see end of function, too. 3420 case HCI_EVENT_DISCONNECTION_COMPLETE: 3421 if (packet[2]) break; // status != 0 3422 handle = little_endian_read_16(packet, 3); 3423 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3424 if (hci_stack->acl_fragmentation_total_size > 0u) { 3425 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3426 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3427 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3428 hci_stack->acl_fragmentation_total_size = 0; 3429 hci_stack->acl_fragmentation_pos = 0; 3430 if (release_buffer){ 3431 hci_release_packet_buffer(); 3432 } 3433 } 3434 } 3435 3436 conn = hci_connection_for_handle(handle); 3437 if (!conn) break; 3438 #ifdef ENABLE_CLASSIC 3439 // pairing failed if it was ongoing 3440 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3441 #endif 3442 3443 // emit dedicatd bonding event 3444 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3445 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3446 } 3447 3448 // mark connection for shutdown, stop timers, reset state 3449 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3450 hci_connection_stop_timer(conn); 3451 hci_connection_init(conn); 3452 3453 #ifdef ENABLE_BLE 3454 #ifdef ENABLE_LE_PERIPHERAL 3455 // re-enable advertisements for le connections if active 3456 if (hci_is_le_connection(conn)){ 3457 hci_update_advertisements_enabled_for_current_roles(); 3458 } 3459 #endif 3460 #endif 3461 break; 3462 3463 case HCI_EVENT_HARDWARE_ERROR: 3464 log_error("Hardware Error: 0x%02x", packet[2]); 3465 if (hci_stack->hardware_error_callback){ 3466 (*hci_stack->hardware_error_callback)(packet[2]); 3467 } else { 3468 // if no special requests, just reboot stack 3469 hci_power_control_off(); 3470 hci_power_control_on(); 3471 } 3472 break; 3473 3474 #ifdef ENABLE_CLASSIC 3475 case HCI_EVENT_ROLE_CHANGE: 3476 if (packet[2]) break; // status != 0 3477 reverse_bd_addr(&packet[3], addr); 3478 addr_type = BD_ADDR_TYPE_ACL; 3479 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3480 if (!conn) break; 3481 conn->role = packet[9]; 3482 break; 3483 #endif 3484 3485 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3486 // release packet buffer only for asynchronous transport and if there are not further fragements 3487 if (hci_transport_synchronous()) { 3488 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3489 return; // instead of break: to avoid re-entering hci_run() 3490 } 3491 hci_stack->acl_fragmentation_tx_active = 0; 3492 if (hci_stack->acl_fragmentation_total_size) break; 3493 hci_release_packet_buffer(); 3494 3495 // L2CAP receives this event via the hci_emit_event below 3496 3497 #ifdef ENABLE_CLASSIC 3498 // For SCO, we do the can_send_now_check here 3499 hci_notify_if_sco_can_send_now(); 3500 #endif 3501 break; 3502 3503 #ifdef ENABLE_CLASSIC 3504 case HCI_EVENT_SCO_CAN_SEND_NOW: 3505 // For SCO, we do the can_send_now_check here 3506 hci_stack->sco_can_send_now = true; 3507 hci_notify_if_sco_can_send_now(); 3508 return; 3509 3510 // explode inquriy results for easier consumption 3511 case HCI_EVENT_INQUIRY_RESULT: 3512 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3513 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3514 gap_inquiry_explode(packet, size); 3515 break; 3516 #endif 3517 3518 #ifdef ENABLE_BLE 3519 case HCI_EVENT_LE_META: 3520 switch (packet[2]){ 3521 #ifdef ENABLE_LE_CENTRAL 3522 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3523 if (!hci_stack->le_scanning_enabled) break; 3524 le_handle_advertisement_report(packet, size); 3525 break; 3526 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3527 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3528 if (!hci_stack->le_scanning_enabled) break; 3529 le_handle_extended_advertisement_report(packet, size); 3530 break; 3531 #endif 3532 #endif 3533 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3534 event_handle_le_connection_complete(packet); 3535 break; 3536 3537 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3538 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3539 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3540 conn = hci_connection_for_handle(handle); 3541 if (!conn) break; 3542 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3543 break; 3544 3545 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3546 // connection 3547 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3548 conn = hci_connection_for_handle(handle); 3549 if (conn) { 3550 // read arguments 3551 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3552 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3553 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3554 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3555 3556 // validate against current connection parameter range 3557 le_connection_parameter_range_t existing_range; 3558 gap_get_connection_parameter_range(&existing_range); 3559 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3560 if (update_parameter){ 3561 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3562 conn->le_conn_interval_min = le_conn_interval_min; 3563 conn->le_conn_interval_max = le_conn_interval_max; 3564 conn->le_conn_latency = le_conn_latency; 3565 conn->le_supervision_timeout = le_supervision_timeout; 3566 } else { 3567 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3568 } 3569 } 3570 break; 3571 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3572 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3573 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3574 conn = hci_connection_for_handle(handle); 3575 if (conn) { 3576 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3577 } 3578 break; 3579 #endif 3580 default: 3581 break; 3582 } 3583 break; 3584 #endif 3585 case HCI_EVENT_VENDOR_SPECIFIC: 3586 // Vendor specific commands often create vendor specific event instead of num completed packets 3587 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 3588 switch (hci_stack->manufacturer){ 3589 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 3590 hci_stack->num_cmd_packets = 1; 3591 break; 3592 default: 3593 break; 3594 } 3595 break; 3596 default: 3597 break; 3598 } 3599 3600 handle_event_for_current_stack_state(packet, size); 3601 3602 // notify upper stack 3603 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 3604 3605 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 3606 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 3607 handle = little_endian_read_16(packet, 3); 3608 hci_connection_t * aConn = hci_connection_for_handle(handle); 3609 // discard connection if app did not trigger a reconnect in the event handler 3610 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 3611 hci_shutdown_connection(aConn); 3612 } 3613 } 3614 3615 // execute main loop 3616 hci_run(); 3617 } 3618 3619 #ifdef ENABLE_CLASSIC 3620 3621 #ifdef ENABLE_SCO_OVER_HCI 3622 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 3623 static void sco_schedule_tx(hci_connection_t * conn); 3624 3625 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 3626 log_debug("SCO TX Timeout"); 3627 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 3628 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3629 if (!conn) return; 3630 3631 // trigger send 3632 conn->sco_tx_ready = 1; 3633 // extra packet if CVSD but SCO buffer is too short 3634 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 3635 conn->sco_tx_ready++; 3636 } 3637 hci_notify_if_sco_can_send_now(); 3638 } 3639 3640 3641 #define SCO_TX_AFTER_RX_MS (6) 3642 3643 static void sco_schedule_tx(hci_connection_t * conn){ 3644 3645 uint32_t now = btstack_run_loop_get_time_ms(); 3646 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 3647 int time_delta_ms = sco_tx_ms - now; 3648 3649 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 3650 3651 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 3652 btstack_run_loop_remove_timer(timer); 3653 btstack_run_loop_set_timer(timer, time_delta_ms); 3654 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 3655 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 3656 btstack_run_loop_add_timer(timer); 3657 } 3658 #endif 3659 3660 static void sco_handler(uint8_t * packet, uint16_t size){ 3661 // lookup connection struct 3662 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 3663 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3664 if (!conn) return; 3665 3666 #ifdef ENABLE_SCO_OVER_HCI 3667 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 3668 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 3669 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 3670 packet[2] = 0x3c; 3671 memmove(&packet[3], &packet[23], 63); 3672 size = 63; 3673 } 3674 } 3675 3676 if (hci_have_usb_transport()){ 3677 // Nothing to do 3678 } else { 3679 // log_debug("sco flow %u, handle 0x%04x, packets sent %u, bytes send %u", hci_stack->synchronous_flow_control_enabled, (int) con_handle, conn->num_packets_sent, conn->num_sco_bytes_sent); 3680 if (hci_stack->synchronous_flow_control_enabled == 0){ 3681 uint32_t now = btstack_run_loop_get_time_ms(); 3682 3683 if (!conn->sco_rx_valid){ 3684 // ignore first 10 packets 3685 conn->sco_rx_count++; 3686 // log_debug("sco rx count %u", conn->sco_rx_count); 3687 if (conn->sco_rx_count == 10) { 3688 // use first timestamp as is and pretent it just started 3689 conn->sco_rx_ms = now; 3690 conn->sco_rx_valid = 1; 3691 conn->sco_rx_count = 0; 3692 sco_schedule_tx(conn); 3693 } 3694 } else { 3695 // track expected arrival timme 3696 conn->sco_rx_count++; 3697 conn->sco_rx_ms += 7; 3698 int delta = (int32_t) (now - conn->sco_rx_ms); 3699 if (delta > 0){ 3700 conn->sco_rx_ms++; 3701 } 3702 // log_debug("sco rx %u", conn->sco_rx_ms); 3703 sco_schedule_tx(conn); 3704 } 3705 } 3706 } 3707 #endif 3708 3709 // deliver to app 3710 if (hci_stack->sco_packet_handler) { 3711 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 3712 } 3713 3714 #ifdef HAVE_SCO_TRANSPORT 3715 // We can send one packet for each received packet 3716 conn->sco_tx_ready++; 3717 hci_notify_if_sco_can_send_now(); 3718 #endif 3719 3720 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 3721 conn->num_packets_completed++; 3722 hci_stack->host_completed_packets = 1; 3723 hci_run(); 3724 #endif 3725 } 3726 #endif 3727 3728 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 3729 hci_dump_packet(packet_type, 1, packet, size); 3730 switch (packet_type) { 3731 case HCI_EVENT_PACKET: 3732 event_handler(packet, size); 3733 break; 3734 case HCI_ACL_DATA_PACKET: 3735 acl_handler(packet, size); 3736 break; 3737 #ifdef ENABLE_CLASSIC 3738 case HCI_SCO_DATA_PACKET: 3739 sco_handler(packet, size); 3740 break; 3741 #endif 3742 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3743 case HCI_ISO_DATA_PACKET: 3744 if (hci_stack->iso_packet_handler != NULL){ 3745 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 3746 } 3747 break; 3748 #endif 3749 default: 3750 break; 3751 } 3752 } 3753 3754 /** 3755 * @brief Add event packet handler. 3756 */ 3757 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3758 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3759 } 3760 3761 /** 3762 * @brief Remove event packet handler. 3763 */ 3764 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3765 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3766 } 3767 3768 /** Register HCI packet handlers */ 3769 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 3770 hci_stack->acl_packet_handler = handler; 3771 } 3772 3773 #ifdef ENABLE_CLASSIC 3774 /** 3775 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 3776 */ 3777 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 3778 hci_stack->sco_packet_handler = handler; 3779 } 3780 #endif 3781 3782 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3783 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 3784 hci_stack->iso_packet_handler = handler; 3785 } 3786 #endif 3787 3788 static void hci_state_reset(void){ 3789 // no connections yet 3790 hci_stack->connections = NULL; 3791 3792 // keep discoverable/connectable as this has been requested by the client(s) 3793 // hci_stack->discoverable = 0; 3794 // hci_stack->connectable = 0; 3795 // hci_stack->bondable = 1; 3796 // hci_stack->own_addr_type = 0; 3797 3798 // buffer is free 3799 hci_stack->hci_packet_buffer_reserved = false; 3800 3801 // no pending cmds 3802 hci_stack->decline_reason = 0; 3803 3804 hci_stack->secure_connections_active = false; 3805 3806 #ifdef ENABLE_CLASSIC 3807 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 3808 hci_stack->page_timeout = 0x6000; // ca. 15 sec 3809 3810 hci_stack->gap_tasks_classic = 3811 GAP_TASK_SET_DEFAULT_LINK_POLICY | 3812 GAP_TASK_SET_CLASS_OF_DEVICE | 3813 GAP_TASK_SET_LOCAL_NAME | 3814 GAP_TASK_SET_EIR_DATA | 3815 GAP_TASK_WRITE_SCAN_ENABLE | 3816 GAP_TASK_WRITE_PAGE_TIMEOUT; 3817 #endif 3818 3819 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3820 hci_stack->classic_read_local_oob_data = false; 3821 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3822 #endif 3823 3824 // LE 3825 #ifdef ENABLE_BLE 3826 memset(hci_stack->le_random_address, 0, 6); 3827 hci_stack->le_random_address_set = 0; 3828 #endif 3829 #ifdef ENABLE_LE_CENTRAL 3830 hci_stack->le_scanning_active = false; 3831 hci_stack->le_scanning_param_update = true; 3832 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3833 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3834 hci_stack->le_whitelist_capacity = 0; 3835 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3836 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 3837 #endif 3838 #endif 3839 #ifdef ENABLE_LE_PERIPHERAL 3840 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3841 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 3842 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 3843 } 3844 if (hci_stack->le_advertisements_data != NULL){ 3845 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 3846 } 3847 #endif 3848 } 3849 3850 #ifdef ENABLE_CLASSIC 3851 /** 3852 * @brief Configure Bluetooth hardware control. Has to be called before power on. 3853 */ 3854 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 3855 // store and open remote device db 3856 hci_stack->link_key_db = link_key_db; 3857 if (hci_stack->link_key_db) { 3858 hci_stack->link_key_db->open(); 3859 } 3860 } 3861 #endif 3862 3863 void hci_init(const hci_transport_t *transport, const void *config){ 3864 3865 #ifdef HAVE_MALLOC 3866 if (!hci_stack) { 3867 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 3868 } 3869 #else 3870 hci_stack = &hci_stack_static; 3871 #endif 3872 memset(hci_stack, 0, sizeof(hci_stack_t)); 3873 3874 // reference to use transport layer implementation 3875 hci_stack->hci_transport = transport; 3876 3877 // reference to used config 3878 hci_stack->config = config; 3879 3880 // setup pointer for outgoing packet buffer 3881 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 3882 3883 // max acl payload size defined in config.h 3884 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 3885 3886 // register packet handlers with transport 3887 transport->register_packet_handler(&packet_handler); 3888 3889 hci_stack->state = HCI_STATE_OFF; 3890 3891 // class of device 3892 hci_stack->class_of_device = 0x007a020c; // Smartphone 3893 3894 // bondable by default 3895 hci_stack->bondable = 1; 3896 3897 #ifdef ENABLE_CLASSIC 3898 // classic name 3899 hci_stack->local_name = default_classic_name; 3900 3901 // Master slave policy 3902 hci_stack->master_slave_policy = 1; 3903 3904 // Allow Role Switch 3905 hci_stack->allow_role_switch = 1; 3906 3907 // Default / minimum security level = 2 3908 hci_stack->gap_security_level = LEVEL_2; 3909 3910 // Default Security Mode 4 3911 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 3912 3913 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 3914 hci_stack->gap_required_encyrption_key_size = 7; 3915 3916 // Link Supervision Timeout 3917 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 3918 3919 #endif 3920 3921 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 3922 hci_stack->ssp_enable = 1; 3923 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 3924 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 3925 hci_stack->ssp_auto_accept = 1; 3926 3927 // Secure Connections: enable (requires support from Controller) 3928 hci_stack->secure_connections_enable = true; 3929 3930 // voice setting - signed 16 bit pcm data with CVSD over the air 3931 hci_stack->sco_voice_setting = 0x60; 3932 3933 #ifdef ENABLE_LE_CENTRAL 3934 // connection parameter to use for outgoing connections 3935 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 3936 hci_stack->le_connection_scan_window = 0x0030; // 30ms 3937 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 3938 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 3939 hci_stack->le_connection_latency = 4; // 4 3940 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 3941 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 3942 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 3943 3944 // default LE Scanning 3945 hci_stack->le_scan_type = 0x1; // active 3946 hci_stack->le_scan_interval = 0x1e0; // 300 ms 3947 hci_stack->le_scan_window = 0x30; // 30 ms 3948 #endif 3949 3950 #ifdef ENABLE_LE_PERIPHERAL 3951 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 3952 #endif 3953 3954 // connection parameter range used to answer connection parameter update requests in l2cap 3955 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 3956 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 3957 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 3958 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 3959 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 3960 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 3961 3962 hci_state_reset(); 3963 } 3964 3965 void hci_deinit(void){ 3966 btstack_run_loop_remove_timer(&hci_stack->timeout); 3967 #ifdef HAVE_MALLOC 3968 if (hci_stack) { 3969 free(hci_stack); 3970 } 3971 #endif 3972 hci_stack = NULL; 3973 3974 #ifdef ENABLE_CLASSIC 3975 disable_l2cap_timeouts = 0; 3976 #endif 3977 } 3978 3979 /** 3980 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 3981 */ 3982 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 3983 hci_stack->chipset = chipset_driver; 3984 3985 // reset chipset driver - init is also called on power_up 3986 if (hci_stack->chipset && hci_stack->chipset->init){ 3987 hci_stack->chipset->init(hci_stack->config); 3988 } 3989 } 3990 3991 /** 3992 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 3993 */ 3994 void hci_set_control(const btstack_control_t *hardware_control){ 3995 // references to used control implementation 3996 hci_stack->control = hardware_control; 3997 // init with transport config 3998 hardware_control->init(hci_stack->config); 3999 } 4000 4001 static void hci_discard_connections(void){ 4002 btstack_linked_list_iterator_t lit; 4003 btstack_linked_list_iterator_init(&lit, &hci_stack->connections); 4004 while (btstack_linked_list_iterator_has_next(&lit)){ 4005 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4006 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&lit); 4007 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4008 hci_shutdown_connection(connection); 4009 } 4010 } 4011 4012 void hci_close(void){ 4013 4014 #ifdef ENABLE_CLASSIC 4015 // close remote device db 4016 if (hci_stack->link_key_db) { 4017 hci_stack->link_key_db->close(); 4018 } 4019 #endif 4020 4021 hci_discard_connections(); 4022 4023 hci_power_control(HCI_POWER_OFF); 4024 4025 #ifdef HAVE_MALLOC 4026 free(hci_stack); 4027 #endif 4028 hci_stack = NULL; 4029 } 4030 4031 #ifdef HAVE_SCO_TRANSPORT 4032 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4033 hci_stack->sco_transport = sco_transport; 4034 sco_transport->register_packet_handler(&packet_handler); 4035 } 4036 #endif 4037 4038 #ifdef ENABLE_CLASSIC 4039 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4040 // validate ranage and set 4041 if (encryption_key_size < 7) return; 4042 if (encryption_key_size > 16) return; 4043 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4044 } 4045 4046 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4047 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4048 hci_stack->gap_security_mode = security_mode; 4049 return ERROR_CODE_SUCCESS; 4050 } else { 4051 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4052 } 4053 } 4054 4055 gap_security_mode_t gap_get_security_mode(void){ 4056 return hci_stack->gap_security_mode; 4057 } 4058 4059 void gap_set_security_level(gap_security_level_t security_level){ 4060 hci_stack->gap_security_level = security_level; 4061 } 4062 4063 gap_security_level_t gap_get_security_level(void){ 4064 if (hci_stack->gap_secure_connections_only_mode){ 4065 return LEVEL_4; 4066 } 4067 return hci_stack->gap_security_level; 4068 } 4069 4070 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4071 hci_stack->gap_minimal_service_security_level = security_level; 4072 } 4073 4074 void gap_set_secure_connections_only_mode(bool enable){ 4075 hci_stack->gap_secure_connections_only_mode = enable; 4076 } 4077 4078 bool gap_get_secure_connections_only_mode(void){ 4079 return hci_stack->gap_secure_connections_only_mode; 4080 } 4081 #endif 4082 4083 #ifdef ENABLE_CLASSIC 4084 void gap_set_class_of_device(uint32_t class_of_device){ 4085 hci_stack->class_of_device = class_of_device; 4086 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4087 hci_run(); 4088 } 4089 4090 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4091 hci_stack->default_link_policy_settings = default_link_policy_settings; 4092 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4093 hci_run(); 4094 } 4095 4096 void gap_set_allow_role_switch(bool allow_role_switch){ 4097 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4098 } 4099 4100 uint8_t hci_get_allow_role_switch(void){ 4101 return hci_stack->allow_role_switch; 4102 } 4103 4104 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4105 hci_stack->link_supervision_timeout = link_supervision_timeout; 4106 } 4107 4108 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4109 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4110 } 4111 4112 uint16_t hci_automatic_flush_timeout(void){ 4113 return hci_stack->automatic_flush_timeout; 4114 } 4115 4116 void hci_disable_l2cap_timeout_check(void){ 4117 disable_l2cap_timeouts = 1; 4118 } 4119 #endif 4120 4121 #ifndef HAVE_HOST_CONTROLLER_API 4122 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4123 void hci_set_bd_addr(bd_addr_t addr){ 4124 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4125 hci_stack->custom_bd_addr_set = 1; 4126 } 4127 #endif 4128 4129 // State-Module-Driver overview 4130 // state module low-level 4131 // HCI_STATE_OFF off close 4132 // HCI_STATE_INITIALIZING, on open 4133 // HCI_STATE_WORKING, on open 4134 // HCI_STATE_HALTING, on open 4135 // HCI_STATE_SLEEPING, off/sleep close 4136 // HCI_STATE_FALLING_ASLEEP on open 4137 4138 static int hci_power_control_on(void){ 4139 4140 // power on 4141 int err = 0; 4142 if (hci_stack->control && hci_stack->control->on){ 4143 err = (*hci_stack->control->on)(); 4144 } 4145 if (err){ 4146 log_error( "POWER_ON failed"); 4147 hci_emit_hci_open_failed(); 4148 return err; 4149 } 4150 4151 // int chipset driver 4152 if (hci_stack->chipset && hci_stack->chipset->init){ 4153 hci_stack->chipset->init(hci_stack->config); 4154 } 4155 4156 // init transport 4157 if (hci_stack->hci_transport->init){ 4158 hci_stack->hci_transport->init(hci_stack->config); 4159 } 4160 4161 // open transport 4162 err = hci_stack->hci_transport->open(); 4163 if (err){ 4164 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4165 if (hci_stack->control && hci_stack->control->off){ 4166 (*hci_stack->control->off)(); 4167 } 4168 hci_emit_hci_open_failed(); 4169 return err; 4170 } 4171 return 0; 4172 } 4173 4174 static void hci_power_control_off(void){ 4175 4176 log_info("hci_power_control_off"); 4177 4178 // close low-level device 4179 hci_stack->hci_transport->close(); 4180 4181 log_info("hci_power_control_off - hci_transport closed"); 4182 4183 // power off 4184 if (hci_stack->control && hci_stack->control->off){ 4185 (*hci_stack->control->off)(); 4186 } 4187 4188 log_info("hci_power_control_off - control closed"); 4189 4190 hci_stack->state = HCI_STATE_OFF; 4191 } 4192 4193 static void hci_power_control_sleep(void){ 4194 4195 log_info("hci_power_control_sleep"); 4196 4197 #if 0 4198 // don't close serial port during sleep 4199 4200 // close low-level device 4201 hci_stack->hci_transport->close(hci_stack->config); 4202 #endif 4203 4204 // sleep mode 4205 if (hci_stack->control && hci_stack->control->sleep){ 4206 (*hci_stack->control->sleep)(); 4207 } 4208 4209 hci_stack->state = HCI_STATE_SLEEPING; 4210 } 4211 4212 static int hci_power_control_wake(void){ 4213 4214 log_info("hci_power_control_wake"); 4215 4216 // wake on 4217 if (hci_stack->control && hci_stack->control->wake){ 4218 (*hci_stack->control->wake)(); 4219 } 4220 4221 #if 0 4222 // open low-level device 4223 int err = hci_stack->hci_transport->open(hci_stack->config); 4224 if (err){ 4225 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4226 if (hci_stack->control && hci_stack->control->off){ 4227 (*hci_stack->control->off)(); 4228 } 4229 hci_emit_hci_open_failed(); 4230 return err; 4231 } 4232 #endif 4233 4234 return 0; 4235 } 4236 4237 static void hci_power_enter_initializing_state(void){ 4238 // set up state machine 4239 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4240 hci_stack->hci_packet_buffer_reserved = false; 4241 hci_stack->state = HCI_STATE_INITIALIZING; 4242 hci_stack->substate = HCI_INIT_SEND_RESET; 4243 } 4244 4245 static void hci_power_enter_halting_state(void){ 4246 #ifdef ENABLE_BLE 4247 hci_whitelist_free(); 4248 #endif 4249 // see hci_run 4250 hci_stack->state = HCI_STATE_HALTING; 4251 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4252 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4253 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4254 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4255 btstack_run_loop_add_timer(&hci_stack->timeout); 4256 } 4257 4258 // returns error 4259 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4260 int err; 4261 switch (power_mode){ 4262 case HCI_POWER_ON: 4263 err = hci_power_control_on(); 4264 if (err != 0) { 4265 log_error("hci_power_control_on() error %d", err); 4266 return err; 4267 } 4268 hci_power_enter_initializing_state(); 4269 break; 4270 case HCI_POWER_OFF: 4271 // do nothing 4272 break; 4273 case HCI_POWER_SLEEP: 4274 // do nothing (with SLEEP == OFF) 4275 break; 4276 default: 4277 btstack_assert(false); 4278 break; 4279 } 4280 return ERROR_CODE_SUCCESS; 4281 } 4282 4283 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4284 switch (power_mode){ 4285 case HCI_POWER_ON: 4286 // do nothing 4287 break; 4288 case HCI_POWER_OFF: 4289 // no connections yet, just turn it off 4290 hci_power_control_off(); 4291 break; 4292 case HCI_POWER_SLEEP: 4293 // no connections yet, just turn it off 4294 hci_power_control_sleep(); 4295 break; 4296 default: 4297 btstack_assert(false); 4298 break; 4299 } 4300 return ERROR_CODE_SUCCESS; 4301 } 4302 4303 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4304 switch (power_mode){ 4305 case HCI_POWER_ON: 4306 // do nothing 4307 break; 4308 case HCI_POWER_OFF: 4309 hci_power_enter_halting_state(); 4310 break; 4311 case HCI_POWER_SLEEP: 4312 // see hci_run 4313 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4314 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4315 break; 4316 default: 4317 btstack_assert(false); 4318 break; 4319 } 4320 return ERROR_CODE_SUCCESS; 4321 } 4322 4323 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4324 switch (power_mode){ 4325 case HCI_POWER_ON: 4326 hci_power_enter_initializing_state(); 4327 break; 4328 case HCI_POWER_OFF: 4329 // do nothing 4330 break; 4331 case HCI_POWER_SLEEP: 4332 // see hci_run 4333 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4334 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4335 break; 4336 default: 4337 btstack_assert(false); 4338 break; 4339 } 4340 return ERROR_CODE_SUCCESS; 4341 } 4342 4343 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4344 switch (power_mode){ 4345 case HCI_POWER_ON: 4346 hci_power_enter_initializing_state(); 4347 break; 4348 case HCI_POWER_OFF: 4349 hci_power_enter_halting_state(); 4350 break; 4351 case HCI_POWER_SLEEP: 4352 // do nothing 4353 break; 4354 default: 4355 btstack_assert(false); 4356 break; 4357 } 4358 return ERROR_CODE_SUCCESS; 4359 } 4360 4361 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4362 int err; 4363 switch (power_mode){ 4364 case HCI_POWER_ON: 4365 err = hci_power_control_wake(); 4366 if (err) return err; 4367 hci_power_enter_initializing_state(); 4368 break; 4369 case HCI_POWER_OFF: 4370 hci_power_enter_halting_state(); 4371 break; 4372 case HCI_POWER_SLEEP: 4373 // do nothing 4374 break; 4375 default: 4376 btstack_assert(false); 4377 break; 4378 } 4379 return ERROR_CODE_SUCCESS; 4380 } 4381 4382 int hci_power_control(HCI_POWER_MODE power_mode){ 4383 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4384 int err = 0; 4385 switch (hci_stack->state){ 4386 case HCI_STATE_OFF: 4387 err = hci_power_control_state_off(power_mode); 4388 break; 4389 case HCI_STATE_INITIALIZING: 4390 err = hci_power_control_state_initializing(power_mode); 4391 break; 4392 case HCI_STATE_WORKING: 4393 err = hci_power_control_state_working(power_mode); 4394 break; 4395 case HCI_STATE_HALTING: 4396 err = hci_power_control_state_halting(power_mode); 4397 break; 4398 case HCI_STATE_FALLING_ASLEEP: 4399 err = hci_power_control_state_falling_asleep(power_mode); 4400 break; 4401 case HCI_STATE_SLEEPING: 4402 err = hci_power_control_state_sleeping(power_mode); 4403 break; 4404 default: 4405 btstack_assert(false); 4406 break; 4407 } 4408 if (err != 0){ 4409 return err; 4410 } 4411 4412 // create internal event 4413 hci_emit_state(); 4414 4415 // trigger next/first action 4416 hci_run(); 4417 4418 return 0; 4419 } 4420 4421 4422 static void hci_halting_run(void) { 4423 4424 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4425 4426 hci_connection_t *connection; 4427 #ifdef ENABLE_BLE 4428 #ifdef ENABLE_LE_PERIPHERAL 4429 bool stop_advertismenets; 4430 #endif 4431 #endif 4432 4433 switch (hci_stack->substate) { 4434 case HCI_HALTING_CLASSIC_STOP: 4435 #ifdef ENABLE_CLASSIC 4436 if (!hci_can_send_command_packet_now()) return; 4437 4438 if (hci_stack->connectable || hci_stack->discoverable){ 4439 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4440 hci_send_cmd(&hci_write_scan_enable, 0); 4441 return; 4442 } 4443 #endif 4444 /* fall through */ 4445 4446 case HCI_HALTING_LE_ADV_STOP: 4447 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4448 4449 #ifdef ENABLE_BLE 4450 #ifdef ENABLE_LE_PERIPHERAL 4451 if (!hci_can_send_command_packet_now()) return; 4452 4453 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4454 4455 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4456 if (hci_extended_advertising_supported()){ 4457 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4458 btstack_linked_list_iterator_t it; 4459 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4460 // stop all periodic advertisements and check if an extended set is active 4461 while (btstack_linked_list_iterator_has_next(&it)){ 4462 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4463 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4464 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4465 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4466 return; 4467 } 4468 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4469 stop_advertismenets = true; 4470 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4471 } 4472 } 4473 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4474 if (stop_advertismenets){ 4475 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4476 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4477 return; 4478 } 4479 } 4480 else 4481 #else 4482 { 4483 if (stop_advertismenets) { 4484 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4485 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4486 return; 4487 } 4488 } 4489 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4490 #endif /* ENABLE_LE_PERIPHERAL */ 4491 #endif /* ENABLE_BLE */ 4492 4493 /* fall through */ 4494 4495 case HCI_HALTING_LE_SCAN_STOP: 4496 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4497 if (!hci_can_send_command_packet_now()) return; 4498 4499 #ifdef ENABLE_BLE 4500 #ifdef ENABLE_LE_CENTRAL 4501 if (hci_stack->le_scanning_active){ 4502 hci_le_scan_stop(); 4503 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4504 return; 4505 } 4506 #endif 4507 #endif 4508 4509 /* fall through */ 4510 4511 case HCI_HALTING_DISCONNECT_ALL: 4512 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4513 if (!hci_can_send_command_packet_now()) return; 4514 4515 // close all open connections 4516 connection = (hci_connection_t *) hci_stack->connections; 4517 if (connection) { 4518 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4519 4520 // check state 4521 if (connection->state == SENT_DISCONNECT) return; 4522 connection->state = SENT_DISCONNECT; 4523 4524 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4525 4526 // finally, send the disconnect command 4527 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4528 return; 4529 } 4530 4531 btstack_run_loop_remove_timer(&hci_stack->timeout); 4532 4533 hci_stack->substate = HCI_HALTING_READY_FOR_CLOSE; 4534 4535 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4536 log_info("HCI_STATE_HALTING: wait 50 ms"); 4537 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4538 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4539 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4540 btstack_run_loop_add_timer(&hci_stack->timeout); 4541 break; 4542 4543 case HCI_HALTING_CLOSE: 4544 // close left over connections (that had not been properly closed before) 4545 hci_discard_connections(); 4546 4547 log_info("HCI_STATE_HALTING, calling off"); 4548 4549 // switch mode 4550 hci_power_control_off(); 4551 4552 log_info("HCI_STATE_HALTING, emitting state"); 4553 hci_emit_state(); 4554 log_info("HCI_STATE_HALTING, done"); 4555 break; 4556 4557 case HCI_HALTING_W4_CLOSE_TIMER: 4558 // keep waiting 4559 4560 break; 4561 default: 4562 break; 4563 } 4564 }; 4565 4566 static void hci_falling_asleep_run(void){ 4567 hci_connection_t * connection; 4568 switch(hci_stack->substate) { 4569 case HCI_FALLING_ASLEEP_DISCONNECT: 4570 log_info("HCI_STATE_FALLING_ASLEEP"); 4571 // close all open connections 4572 connection = (hci_connection_t *) hci_stack->connections; 4573 if (connection){ 4574 4575 // send disconnect 4576 if (!hci_can_send_command_packet_now()) return; 4577 4578 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4579 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4580 4581 // send disconnected event right away - causes higher layer connections to get closed, too. 4582 hci_shutdown_connection(connection); 4583 return; 4584 } 4585 4586 if (hci_classic_supported()){ 4587 // disable page and inquiry scan 4588 if (!hci_can_send_command_packet_now()) return; 4589 4590 log_info("HCI_STATE_HALTING, disabling inq scans"); 4591 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4592 4593 // continue in next sub state 4594 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4595 break; 4596 } 4597 4598 /* fall through */ 4599 4600 case HCI_FALLING_ASLEEP_COMPLETE: 4601 log_info("HCI_STATE_HALTING, calling sleep"); 4602 // switch mode 4603 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4604 hci_emit_state(); 4605 break; 4606 4607 default: 4608 break; 4609 } 4610 } 4611 4612 #ifdef ENABLE_CLASSIC 4613 4614 static void hci_update_scan_enable(void){ 4615 // 2 = page scan, 1 = inq scan 4616 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 4617 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 4618 hci_run(); 4619 } 4620 4621 void gap_discoverable_control(uint8_t enable){ 4622 if (enable) enable = 1; // normalize argument 4623 4624 if (hci_stack->discoverable == enable){ 4625 hci_emit_discoverable_enabled(hci_stack->discoverable); 4626 return; 4627 } 4628 4629 hci_stack->discoverable = enable; 4630 hci_update_scan_enable(); 4631 } 4632 4633 void gap_connectable_control(uint8_t enable){ 4634 if (enable) enable = 1; // normalize argument 4635 4636 // don't emit event 4637 if (hci_stack->connectable == enable) return; 4638 4639 hci_stack->connectable = enable; 4640 hci_update_scan_enable(); 4641 } 4642 #endif 4643 4644 void gap_local_bd_addr(bd_addr_t address_buffer){ 4645 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 4646 } 4647 4648 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4649 static void hci_host_num_completed_packets(void){ 4650 4651 // create packet manually as arrays are not supported and num_commands should not get reduced 4652 hci_reserve_packet_buffer(); 4653 uint8_t * packet = hci_get_outgoing_packet_buffer(); 4654 4655 uint16_t size = 0; 4656 uint16_t num_handles = 0; 4657 packet[size++] = 0x35; 4658 packet[size++] = 0x0c; 4659 size++; // skip param len 4660 size++; // skip num handles 4661 4662 // add { handle, packets } entries 4663 btstack_linked_item_t * it; 4664 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 4665 hci_connection_t * connection = (hci_connection_t *) it; 4666 if (connection->num_packets_completed){ 4667 little_endian_store_16(packet, size, connection->con_handle); 4668 size += 2; 4669 little_endian_store_16(packet, size, connection->num_packets_completed); 4670 size += 2; 4671 // 4672 num_handles++; 4673 connection->num_packets_completed = 0; 4674 } 4675 } 4676 4677 packet[2] = size - 3; 4678 packet[3] = num_handles; 4679 4680 hci_stack->host_completed_packets = 0; 4681 4682 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 4683 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 4684 4685 // release packet buffer for synchronous transport implementations 4686 if (hci_transport_synchronous()){ 4687 hci_release_packet_buffer(); 4688 hci_emit_transport_packet_sent(); 4689 } 4690 } 4691 #endif 4692 4693 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 4694 UNUSED(ds); 4695 hci_stack->substate = HCI_HALTING_CLOSE; 4696 // allow packet handlers to defer final shutdown 4697 hci_emit_state(); 4698 hci_run(); 4699 } 4700 4701 static bool hci_run_acl_fragments(void){ 4702 if (hci_stack->acl_fragmentation_total_size > 0u) { 4703 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 4704 hci_connection_t *connection = hci_connection_for_handle(con_handle); 4705 if (connection) { 4706 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 4707 hci_send_acl_packet_fragments(connection); 4708 return true; 4709 } 4710 } else { 4711 // connection gone -> discard further fragments 4712 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 4713 hci_stack->acl_fragmentation_total_size = 0; 4714 hci_stack->acl_fragmentation_pos = 0; 4715 } 4716 } 4717 return false; 4718 } 4719 4720 #ifdef ENABLE_CLASSIC 4721 4722 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4723 static bool hci_classic_operation_active(void) { 4724 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 4725 return true; 4726 } 4727 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 4728 return true; 4729 } 4730 btstack_linked_item_t * it; 4731 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 4732 hci_connection_t *connection = (hci_connection_t *) it; 4733 switch (connection->state) { 4734 case SENT_CREATE_CONNECTION: 4735 case SENT_CANCEL_CONNECTION: 4736 case SENT_DISCONNECT: 4737 return true; 4738 default: 4739 break; 4740 } 4741 } 4742 return false; 4743 } 4744 #endif 4745 4746 static bool hci_run_general_gap_classic(void){ 4747 4748 // assert stack is working and classic is active 4749 if (hci_classic_supported() == false) return false; 4750 if (hci_stack->state != HCI_STATE_WORKING) return false; 4751 4752 // decline incoming connections 4753 if (hci_stack->decline_reason){ 4754 uint8_t reason = hci_stack->decline_reason; 4755 hci_stack->decline_reason = 0; 4756 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 4757 return true; 4758 } 4759 4760 if (hci_stack->gap_tasks_classic != 0){ 4761 hci_run_gap_tasks_classic(); 4762 return true; 4763 } 4764 4765 // start/stop inquiry 4766 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 4767 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4768 if (hci_classic_operation_active() == false) 4769 #endif 4770 { 4771 uint8_t duration = hci_stack->inquiry_state; 4772 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 4773 if (hci_stack->inquiry_max_period_length != 0){ 4774 hci_send_cmd(&hci_periodic_inquiry_mode, hci_stack->inquiry_max_period_length, hci_stack->inquiry_min_period_length, hci_stack->inquiry_lap, duration, 0); 4775 } else { 4776 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 4777 } 4778 return true; 4779 } 4780 } 4781 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 4782 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 4783 hci_send_cmd(&hci_inquiry_cancel); 4784 return true; 4785 } 4786 4787 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 4788 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 4789 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 4790 return true; 4791 } 4792 4793 // remote name request 4794 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 4795 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4796 if (hci_classic_operation_active() == false) 4797 #endif 4798 { 4799 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 4800 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 4801 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 4802 return true; 4803 } 4804 } 4805 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4806 // Local OOB data 4807 if (hci_stack->classic_read_local_oob_data){ 4808 hci_stack->classic_read_local_oob_data = false; 4809 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 4810 hci_send_cmd(&hci_read_local_extended_oob_data); 4811 } else { 4812 hci_send_cmd(&hci_read_local_oob_data); 4813 } 4814 } 4815 #endif 4816 // pairing 4817 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 4818 uint8_t state = hci_stack->gap_pairing_state; 4819 uint8_t pin_code[16]; 4820 switch (state){ 4821 case GAP_PAIRING_STATE_SEND_PIN: 4822 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4823 memset(pin_code, 0, 16); 4824 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 4825 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 4826 break; 4827 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 4828 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4829 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 4830 break; 4831 case GAP_PAIRING_STATE_SEND_PASSKEY: 4832 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4833 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 4834 break; 4835 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 4836 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4837 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 4838 break; 4839 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 4840 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4841 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 4842 break; 4843 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 4844 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4845 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 4846 break; 4847 default: 4848 break; 4849 } 4850 return true; 4851 } 4852 return false; 4853 } 4854 #endif 4855 4856 #ifdef ENABLE_BLE 4857 4858 #ifdef ENABLE_LE_CENTRAL 4859 static void hci_le_scan_stop(void){ 4860 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4861 if (hci_extended_advertising_supported()) { 4862 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 4863 } else 4864 #endif 4865 { 4866 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 4867 } 4868 } 4869 #endif 4870 4871 #ifdef ENABLE_LE_PERIPHERAL 4872 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4873 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 4874 uint8_t operation = 0; 4875 if (pos == 0){ 4876 // first fragment or complete data 4877 operation |= 1; 4878 } 4879 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 4880 // last fragment or complete data 4881 operation |= 2; 4882 } 4883 return operation; 4884 } 4885 #endif 4886 #endif 4887 4888 static bool hci_run_general_gap_le(void){ 4889 4890 btstack_linked_list_iterator_t lit; 4891 4892 // Phase 1: collect what to stop 4893 4894 #ifdef ENABLE_LE_CENTRAL 4895 bool scanning_stop = false; 4896 bool connecting_stop = false; 4897 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4898 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4899 bool periodic_sync_stop = false; 4900 #endif 4901 #endif 4902 #endif 4903 4904 #ifdef ENABLE_LE_PERIPHERAL 4905 bool advertising_stop = false; 4906 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4907 le_advertising_set_t * advertising_stop_set = NULL; 4908 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4909 bool periodic_advertising_stop = false; 4910 #endif 4911 #endif 4912 #endif 4913 4914 // check if own address changes 4915 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 4916 4917 // check if whitelist needs modification 4918 bool whitelist_modification_pending = false; 4919 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 4920 while (btstack_linked_list_iterator_has_next(&lit)){ 4921 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 4922 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 4923 whitelist_modification_pending = true; 4924 break; 4925 } 4926 } 4927 4928 // check if resolving list needs modification 4929 bool resolving_list_modification_pending = false; 4930 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4931 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 4932 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 4933 resolving_list_modification_pending = true; 4934 } 4935 #endif 4936 4937 #ifdef ENABLE_LE_CENTRAL 4938 4939 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4940 // check if periodic advertiser list needs modification 4941 bool periodic_list_modification_pending = false; 4942 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 4943 while (btstack_linked_list_iterator_has_next(&lit)){ 4944 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 4945 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 4946 periodic_list_modification_pending = true; 4947 break; 4948 } 4949 } 4950 #endif 4951 4952 // scanning control 4953 if (hci_stack->le_scanning_active) { 4954 // stop if: 4955 // - parameter change required 4956 // - it's disabled 4957 // - whitelist change required but used for scanning 4958 // - resolving list modified 4959 // - own address changes 4960 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 4961 if ((hci_stack->le_scanning_param_update) || 4962 !hci_stack->le_scanning_enabled || 4963 (scanning_uses_whitelist && whitelist_modification_pending) || 4964 resolving_list_modification_pending || 4965 random_address_change){ 4966 4967 scanning_stop = true; 4968 } 4969 } 4970 4971 // connecting control 4972 bool connecting_with_whitelist; 4973 switch (hci_stack->le_connecting_state){ 4974 case LE_CONNECTING_DIRECT: 4975 case LE_CONNECTING_WHITELIST: 4976 // stop connecting if: 4977 // - connecting uses white and whitelist modification pending 4978 // - if it got disabled 4979 // - resolving list modified 4980 // - own address changes 4981 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 4982 if ((connecting_with_whitelist && whitelist_modification_pending) || 4983 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 4984 resolving_list_modification_pending || 4985 random_address_change) { 4986 4987 connecting_stop = true; 4988 } 4989 break; 4990 default: 4991 break; 4992 } 4993 4994 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4995 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4996 // periodic sync control 4997 bool sync_with_advertiser_list; 4998 switch(hci_stack->le_periodic_sync_state){ 4999 case LE_CONNECTING_DIRECT: 5000 case LE_CONNECTING_WHITELIST: 5001 // stop sync if: 5002 // - sync with advertiser list and advertiser list modification pending 5003 // - if it got disabled 5004 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5005 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5006 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5007 periodic_sync_stop = true; 5008 } 5009 break; 5010 default: 5011 break; 5012 } 5013 #endif 5014 #endif 5015 5016 #endif /* ENABLE_LE_CENTRAL */ 5017 5018 #ifdef ENABLE_LE_PERIPHERAL 5019 // le advertisement control 5020 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5021 // stop if: 5022 // - parameter change required 5023 // - random address used in advertising and changes 5024 // - it's disabled 5025 // - whitelist change required but used for advertisement filter policy 5026 // - resolving list modified 5027 // - own address changes 5028 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5029 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5030 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5031 if (advertising_change || 5032 (advertising_uses_random_address && random_address_change) || 5033 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5034 (advertising_uses_whitelist && whitelist_modification_pending) || 5035 resolving_list_modification_pending || 5036 random_address_change) { 5037 5038 advertising_stop = true; 5039 } 5040 } 5041 5042 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5043 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5044 btstack_linked_list_iterator_t it; 5045 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5046 while (btstack_linked_list_iterator_has_next(&it)){ 5047 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5048 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5049 // stop if: 5050 // - parameter change required 5051 // - random address used in connectable advertising and changes 5052 // - it's disabled 5053 // - whitelist change required but used for advertisement filter policy 5054 // - resolving list modified 5055 // - own address changes 5056 // - advertisement set will be removed 5057 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5058 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5059 bool advertising_uses_random_address = 5060 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5061 advertising_connectable; 5062 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5063 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5064 bool advertising_set_random_address_change = 5065 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5066 bool advertising_set_will_be_removed = 5067 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5068 if (advertising_parameter_change || 5069 (advertising_uses_random_address && advertising_set_random_address_change) || 5070 (advertising_enabled == false) || 5071 (advertising_uses_whitelist && whitelist_modification_pending) || 5072 resolving_list_modification_pending || 5073 advertising_set_will_be_removed) { 5074 5075 advertising_stop = true; 5076 advertising_stop_set = advertising_set; 5077 break; 5078 } 5079 } 5080 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5081 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5082 // stop if: 5083 // - it's disabled 5084 // - parameter change required 5085 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5086 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5087 if ((periodic_enabled == false) || periodic_parameter_change){ 5088 periodic_advertising_stop = true; 5089 advertising_stop_set = advertising_set; 5090 } 5091 } 5092 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5093 } 5094 } 5095 #endif 5096 5097 #endif 5098 5099 5100 // Phase 2: stop everything that should be off during modifications 5101 5102 #ifdef ENABLE_LE_CENTRAL 5103 if (scanning_stop){ 5104 hci_stack->le_scanning_active = false; 5105 hci_le_scan_stop(); 5106 return true; 5107 } 5108 5109 if (connecting_stop){ 5110 hci_send_cmd(&hci_le_create_connection_cancel); 5111 return true; 5112 } 5113 5114 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5115 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5116 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5117 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5118 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5119 return true; 5120 } 5121 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5122 if (periodic_sync_stop){ 5123 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5124 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5125 return true; 5126 } 5127 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5128 #endif 5129 #endif 5130 5131 #ifdef ENABLE_LE_PERIPHERAL 5132 if (advertising_stop){ 5133 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5134 if (hci_extended_advertising_supported()) { 5135 uint8_t advertising_stop_handle; 5136 if (advertising_stop_set != NULL){ 5137 advertising_stop_handle = advertising_stop_set->advertising_handle; 5138 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5139 } else { 5140 advertising_stop_handle = 0; 5141 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5142 } 5143 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5144 const uint16_t durations[] = { 0 }; 5145 const uint16_t max_events[] = { 0 }; 5146 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5147 } else 5148 #endif 5149 { 5150 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5151 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5152 } 5153 return true; 5154 } 5155 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5156 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5157 if (periodic_advertising_stop){ 5158 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5159 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5160 return true; 5161 } 5162 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5163 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5164 #endif 5165 5166 // Phase 3: modify 5167 5168 if (random_address_change){ 5169 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5170 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5171 if (hci_extended_advertising_supported()) { 5172 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5173 } 5174 #endif 5175 { 5176 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5177 } 5178 return true; 5179 } 5180 5181 #ifdef ENABLE_LE_CENTRAL 5182 if (hci_stack->le_scanning_param_update){ 5183 hci_stack->le_scanning_param_update = false; 5184 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5185 if (hci_extended_advertising_supported()){ 5186 // prepare arrays for all PHYs 5187 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5188 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5189 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5190 uint8_t scanning_phys = 1; // LE 1M PHY 5191 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5192 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5193 } else 5194 #endif 5195 { 5196 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5197 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5198 } 5199 return true; 5200 } 5201 #endif 5202 5203 #ifdef ENABLE_LE_PERIPHERAL 5204 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5205 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5206 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5207 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5208 if (hci_extended_advertising_supported()){ 5209 // map advertisment type to advertising event properties 5210 uint16_t adv_event_properties = 0; 5211 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5212 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5213 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5214 } 5215 hci_stack->le_advertising_set_in_current_command = 0; 5216 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5217 0, 5218 adv_event_properties, 5219 hci_stack->le_advertisements_interval_min, 5220 hci_stack->le_advertisements_interval_max, 5221 hci_stack->le_advertisements_channel_map, 5222 hci_stack->le_advertisements_own_addr_type, 5223 hci_stack->le_advertisements_direct_address_type, 5224 hci_stack->le_advertisements_direct_address, 5225 hci_stack->le_advertisements_filter_policy, 5226 0x7f, // tx power: no preference 5227 0x01, // primary adv phy: LE 1M 5228 0, // secondary adv max skip 5229 0, // secondary adv phy 5230 0, // adv sid 5231 0 // scan request notification 5232 ); 5233 } 5234 #endif 5235 { 5236 hci_send_cmd(&hci_le_set_advertising_parameters, 5237 hci_stack->le_advertisements_interval_min, 5238 hci_stack->le_advertisements_interval_max, 5239 hci_stack->le_advertisements_type, 5240 hci_stack->le_advertisements_own_addr_type, 5241 hci_stack->le_advertisements_direct_address_type, 5242 hci_stack->le_advertisements_direct_address, 5243 hci_stack->le_advertisements_channel_map, 5244 hci_stack->le_advertisements_filter_policy); 5245 } 5246 return true; 5247 } 5248 5249 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5250 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5251 uint8_t adv_data_clean[31]; 5252 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5253 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5254 hci_stack->le_advertisements_data_len); 5255 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5256 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5257 if (hci_extended_advertising_supported()){ 5258 hci_stack->le_advertising_set_in_current_command = 0; 5259 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5260 } else 5261 #endif 5262 { 5263 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5264 } 5265 return true; 5266 } 5267 5268 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5269 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5270 uint8_t scan_data_clean[31]; 5271 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5272 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5273 hci_stack->le_scan_response_data_len); 5274 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5275 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5276 if (hci_extended_advertising_supported()){ 5277 hci_stack->le_advertising_set_in_current_command = 0; 5278 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5279 } else 5280 #endif 5281 { 5282 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5283 } 5284 return true; 5285 } 5286 5287 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5288 if (hci_extended_advertising_supported()) { 5289 btstack_linked_list_iterator_t it; 5290 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5291 while (btstack_linked_list_iterator_has_next(&it)){ 5292 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5293 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5294 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5295 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5296 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5297 return true; 5298 } 5299 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5300 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5301 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5302 return true; 5303 } 5304 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5305 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5306 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5307 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5308 advertising_set->advertising_handle, 5309 advertising_set->extended_params.advertising_event_properties, 5310 advertising_set->extended_params.primary_advertising_interval_min, 5311 advertising_set->extended_params.primary_advertising_interval_max, 5312 advertising_set->extended_params.primary_advertising_channel_map, 5313 advertising_set->extended_params.own_address_type, 5314 advertising_set->extended_params.peer_address_type, 5315 advertising_set->extended_params.peer_address, 5316 advertising_set->extended_params.advertising_filter_policy, 5317 advertising_set->extended_params.advertising_tx_power, 5318 advertising_set->extended_params.primary_advertising_phy, 5319 advertising_set->extended_params.secondary_advertising_max_skip, 5320 advertising_set->extended_params.secondary_advertising_phy, 5321 advertising_set->extended_params.advertising_sid, 5322 advertising_set->extended_params.scan_request_notification_enable 5323 ); 5324 return true; 5325 } 5326 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5327 uint16_t pos = advertising_set->adv_data_pos; 5328 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5329 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5330 if ((operation & 0x02) != 0){ 5331 // last fragment or complete data 5332 operation |= 2; 5333 advertising_set->adv_data_pos = 0; 5334 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5335 } else { 5336 advertising_set->adv_data_pos += data_to_upload; 5337 } 5338 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5339 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5340 return true; 5341 } 5342 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5343 uint16_t pos = advertising_set->scan_data_pos; 5344 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5345 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5346 if ((operation & 0x02) != 0){ 5347 advertising_set->scan_data_pos = 0; 5348 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5349 } else { 5350 advertising_set->scan_data_pos += data_to_upload; 5351 } 5352 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5353 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5354 return true; 5355 } 5356 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5357 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5358 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5359 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5360 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5361 advertising_set->advertising_handle, 5362 advertising_set->periodic_params.periodic_advertising_interval_min, 5363 advertising_set->periodic_params.periodic_advertising_interval_max, 5364 advertising_set->periodic_params.periodic_advertising_properties); 5365 return true; 5366 } 5367 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5368 uint16_t pos = advertising_set->periodic_data_pos; 5369 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5370 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5371 if ((operation & 0x02) != 0){ 5372 // last fragment or complete data 5373 operation |= 2; 5374 advertising_set->periodic_data_pos = 0; 5375 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5376 } else { 5377 advertising_set->periodic_data_pos += data_to_upload; 5378 } 5379 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5380 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5381 return true; 5382 } 5383 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5384 } 5385 } 5386 #endif 5387 5388 #endif 5389 5390 #ifdef ENABLE_LE_CENTRAL 5391 // if connect with whitelist was active and is not cancelled yet, wait until next time 5392 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5393 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5394 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5395 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5396 #endif 5397 #endif 5398 5399 // LE Whitelist Management 5400 if (whitelist_modification_pending){ 5401 // add/remove entries 5402 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5403 while (btstack_linked_list_iterator_has_next(&lit)){ 5404 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5405 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5406 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5407 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5408 return true; 5409 } 5410 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5411 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5412 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5413 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5414 return true; 5415 } 5416 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5417 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5418 btstack_memory_whitelist_entry_free(entry); 5419 } 5420 } 5421 } 5422 5423 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5424 // LE Resolving List Management 5425 if (resolving_list_supported) { 5426 uint16_t i; 5427 switch (hci_stack->le_resolving_list_state) { 5428 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5429 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5430 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5431 return true; 5432 case LE_RESOLVING_LIST_READ_SIZE: 5433 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5434 hci_send_cmd(&hci_le_read_resolving_list_size); 5435 return true; 5436 case LE_RESOLVING_LIST_SEND_CLEAR: 5437 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5438 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5439 sizeof(hci_stack->le_resolving_list_add_entries)); 5440 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5441 sizeof(hci_stack->le_resolving_list_remove_entries)); 5442 hci_send_cmd(&hci_le_clear_resolving_list); 5443 return true; 5444 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5445 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5446 uint8_t offset = i >> 3; 5447 uint8_t mask = 1 << (i & 7); 5448 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5449 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5450 bd_addr_t peer_identity_addreses; 5451 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5452 sm_key_t peer_irk; 5453 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5454 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5455 5456 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5457 // trigger whitelist entry 'update' (work around for controller bug) 5458 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5459 while (btstack_linked_list_iterator_has_next(&lit)) { 5460 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5461 if (entry->address_type != peer_identity_addr_type) continue; 5462 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5463 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5464 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5465 } 5466 #endif 5467 5468 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5469 peer_identity_addreses); 5470 return true; 5471 } 5472 5473 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5474 5475 /* fall through */ 5476 5477 case LE_RESOLVING_LIST_ADD_ENTRIES: 5478 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5479 uint8_t offset = i >> 3; 5480 uint8_t mask = 1 << (i & 7); 5481 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5482 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5483 bd_addr_t peer_identity_addreses; 5484 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5485 sm_key_t peer_irk; 5486 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5487 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5488 const uint8_t *local_irk = gap_get_persistent_irk(); 5489 // command uses format specifier 'P' that stores 16-byte value without flip 5490 uint8_t local_irk_flipped[16]; 5491 uint8_t peer_irk_flipped[16]; 5492 reverse_128(local_irk, local_irk_flipped); 5493 reverse_128(peer_irk, peer_irk_flipped); 5494 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5495 peer_irk_flipped, local_irk_flipped); 5496 return true; 5497 } 5498 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5499 break; 5500 5501 default: 5502 break; 5503 } 5504 } 5505 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5506 #endif 5507 5508 #ifdef ENABLE_LE_CENTRAL 5509 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5510 // LE Whitelist Management 5511 if (periodic_list_modification_pending){ 5512 // add/remove entries 5513 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5514 while (btstack_linked_list_iterator_has_next(&lit)){ 5515 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5516 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5517 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5518 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5519 return true; 5520 } 5521 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5522 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5523 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5524 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address); 5525 return true; 5526 } 5527 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5528 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5529 btstack_memory_periodic_advertiser_list_entry_free(entry); 5530 } 5531 } 5532 } 5533 #endif 5534 #endif 5535 5536 // post-pone all actions until stack is fully working 5537 if (hci_stack->state != HCI_STATE_WORKING) return false; 5538 5539 // advertisements, active scanning, and creating connections requires random address to be set if using private address 5540 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 5541 5542 // Phase 4: restore state 5543 5544 #ifdef ENABLE_LE_CENTRAL 5545 // re-start scanning 5546 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 5547 hci_stack->le_scanning_active = true; 5548 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5549 if (hci_extended_advertising_supported()){ 5550 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 5551 } else 5552 #endif 5553 { 5554 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 5555 } 5556 return true; 5557 } 5558 #endif 5559 5560 #ifdef ENABLE_LE_CENTRAL 5561 // re-start connecting 5562 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 5563 bd_addr_t null_addr; 5564 memset(null_addr, 0, 6); 5565 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5566 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5567 hci_send_cmd(&hci_le_create_connection, 5568 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 5569 hci_stack->le_connection_scan_window, // scan interval: 30 ms 5570 1, // use whitelist 5571 0, // peer address type 5572 null_addr, // peer bd addr 5573 hci_stack->le_connection_own_addr_type, // our addr type: 5574 hci_stack->le_connection_interval_min, // conn interval min 5575 hci_stack->le_connection_interval_max, // conn interval max 5576 hci_stack->le_connection_latency, // conn latency 5577 hci_stack->le_supervision_timeout, // conn latency 5578 hci_stack->le_minimum_ce_length, // min ce length 5579 hci_stack->le_maximum_ce_length // max ce length 5580 ); 5581 return true; 5582 } 5583 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5584 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 5585 switch(hci_stack->le_periodic_sync_request){ 5586 case LE_CONNECTING_DIRECT: 5587 case LE_CONNECTING_WHITELIST: 5588 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 5589 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 5590 hci_stack->le_periodic_sync_options, 5591 hci_stack->le_periodic_sync_advertising_sid, 5592 hci_stack->le_periodic_sync_advertiser_address_type, 5593 hci_stack->le_periodic_sync_advertiser_address, 5594 hci_stack->le_periodic_sync_skip, 5595 hci_stack->le_periodic_sync_timeout, 5596 hci_stack->le_periodic_sync_cte_type); 5597 return true; 5598 default: 5599 break; 5600 } 5601 } 5602 #endif 5603 #endif 5604 5605 #ifdef ENABLE_LE_PERIPHERAL 5606 // re-start advertising 5607 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5608 // check if advertisements should be enabled given 5609 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5610 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 5611 5612 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5613 if (hci_extended_advertising_supported()){ 5614 const uint8_t advertising_handles[] = { 0 }; 5615 const uint16_t durations[] = { 0 }; 5616 const uint16_t max_events[] = { 0 }; 5617 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5618 } else 5619 #endif 5620 { 5621 hci_send_cmd(&hci_le_set_advertise_enable, 1); 5622 } 5623 return true; 5624 } 5625 5626 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5627 if (hci_extended_advertising_supported()) { 5628 btstack_linked_list_iterator_t it; 5629 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5630 while (btstack_linked_list_iterator_has_next(&it)) { 5631 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 5632 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5633 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5634 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 5635 const uint16_t durations[] = { advertising_set->enable_timeout }; 5636 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 5637 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5638 return true; 5639 } 5640 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5641 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 5642 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5643 uint8_t enable = 1; 5644 if (advertising_set->periodic_include_adi){ 5645 enable |= 2; 5646 } 5647 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 5648 return true; 5649 } 5650 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5651 } 5652 } 5653 #endif 5654 #endif 5655 5656 return false; 5657 } 5658 #endif 5659 5660 static bool hci_run_general_pending_commands(void){ 5661 btstack_linked_item_t * it; 5662 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 5663 hci_connection_t * connection = (hci_connection_t *) it; 5664 5665 switch(connection->state){ 5666 case SEND_CREATE_CONNECTION: 5667 switch(connection->address_type){ 5668 #ifdef ENABLE_CLASSIC 5669 case BD_ADDR_TYPE_ACL: 5670 log_info("sending hci_create_connection"); 5671 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 5672 break; 5673 #endif 5674 default: 5675 #ifdef ENABLE_BLE 5676 #ifdef ENABLE_LE_CENTRAL 5677 log_info("sending hci_le_create_connection"); 5678 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5679 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5680 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5681 if (hci_extended_advertising_supported()) { 5682 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 5683 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 5684 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 5685 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 5686 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 5687 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 5688 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 5689 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 5690 hci_send_cmd(&hci_le_extended_create_connection, 5691 0, // don't use whitelist 5692 hci_stack->le_connection_own_addr_type, // our addr type: 5693 connection->address_type, // peer address type 5694 connection->address, // peer bd addr 5695 1, // initiating PHY - 1M 5696 le_connection_scan_interval, // conn scan interval 5697 le_connection_scan_window, // conn scan windows 5698 le_connection_interval_min, // conn interval min 5699 le_connection_interval_max, // conn interval max 5700 le_connection_latency, // conn latency 5701 le_supervision_timeout, // conn latency 5702 le_minimum_ce_length, // min ce length 5703 le_maximum_ce_length // max ce length 5704 ); } 5705 else 5706 #endif 5707 { 5708 hci_send_cmd(&hci_le_create_connection, 5709 hci_stack->le_connection_scan_interval, // conn scan interval 5710 hci_stack->le_connection_scan_window, // conn scan windows 5711 0, // don't use whitelist 5712 connection->address_type, // peer address type 5713 connection->address, // peer bd addr 5714 hci_stack->le_connection_own_addr_type, // our addr type: 5715 hci_stack->le_connection_interval_min, // conn interval min 5716 hci_stack->le_connection_interval_max, // conn interval max 5717 hci_stack->le_connection_latency, // conn latency 5718 hci_stack->le_supervision_timeout, // conn latency 5719 hci_stack->le_minimum_ce_length, // min ce length 5720 hci_stack->le_maximum_ce_length // max ce length 5721 ); 5722 } 5723 connection->state = SENT_CREATE_CONNECTION; 5724 #endif 5725 #endif 5726 break; 5727 } 5728 return true; 5729 5730 #ifdef ENABLE_CLASSIC 5731 case RECEIVED_CONNECTION_REQUEST: 5732 connection->role = HCI_ROLE_SLAVE; 5733 if (connection->address_type == BD_ADDR_TYPE_ACL){ 5734 log_info("sending hci_accept_connection_request"); 5735 connection->state = ACCEPTED_CONNECTION_REQUEST; 5736 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 5737 return true; 5738 } 5739 break; 5740 #endif 5741 5742 #ifdef ENABLE_BLE 5743 #ifdef ENABLE_LE_CENTRAL 5744 case SEND_CANCEL_CONNECTION: 5745 connection->state = SENT_CANCEL_CONNECTION; 5746 hci_send_cmd(&hci_le_create_connection_cancel); 5747 return true; 5748 #endif 5749 #endif 5750 case SEND_DISCONNECT: 5751 connection->state = SENT_DISCONNECT; 5752 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5753 return true; 5754 5755 default: 5756 break; 5757 } 5758 5759 // no further commands if connection is about to get shut down 5760 if (connection->state == SENT_DISCONNECT) continue; 5761 5762 #ifdef ENABLE_CLASSIC 5763 5764 // Handling link key request requires remote supported features 5765 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 5766 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 5767 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 5768 5769 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 5770 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 5771 if (have_link_key && security_level_sufficient){ 5772 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 5773 } else { 5774 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 5775 } 5776 return true; 5777 } 5778 5779 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 5780 log_info("denying to pin request"); 5781 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 5782 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 5783 return true; 5784 } 5785 5786 // security assessment requires remote features 5787 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 5788 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 5789 hci_ssp_assess_security_on_io_cap_request(connection); 5790 // no return here as hci_ssp_assess_security_on_io_cap_request only sets AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY or AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY 5791 } 5792 5793 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 5794 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 5795 // set authentication requirements: 5796 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 5797 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 5798 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 5799 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 5800 authreq |= 1; 5801 } 5802 bool bonding = hci_stack->bondable; 5803 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 5804 // if we have received IO Cap Response, we're in responder role 5805 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5806 if (bonding && !remote_bonding){ 5807 log_info("Remote not bonding, dropping local flag"); 5808 bonding = false; 5809 } 5810 } 5811 if (bonding){ 5812 if (connection->bonding_flags & BONDING_DEDICATED){ 5813 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5814 } else { 5815 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5816 } 5817 } 5818 uint8_t have_oob_data = 0; 5819 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5820 if (connection->classic_oob_c_192 != NULL){ 5821 have_oob_data |= 1; 5822 } 5823 if (connection->classic_oob_c_256 != NULL){ 5824 have_oob_data |= 2; 5825 } 5826 #endif 5827 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 5828 return true; 5829 } 5830 5831 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 5832 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 5833 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 5834 return true; 5835 } 5836 5837 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5838 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 5839 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 5840 const uint8_t zero[16] = { 0 }; 5841 const uint8_t * r_192 = zero; 5842 const uint8_t * c_192 = zero; 5843 const uint8_t * r_256 = zero; 5844 const uint8_t * c_256 = zero; 5845 // verify P-256 OOB 5846 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 5847 c_256 = connection->classic_oob_c_256; 5848 if (connection->classic_oob_r_256 != NULL) { 5849 r_256 = connection->classic_oob_r_256; 5850 } 5851 } 5852 // verify P-192 OOB 5853 if ((connection->classic_oob_c_192 != NULL)) { 5854 c_192 = connection->classic_oob_c_192; 5855 if (connection->classic_oob_r_192 != NULL) { 5856 r_192 = connection->classic_oob_r_192; 5857 } 5858 } 5859 5860 // assess security 5861 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 5862 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 5863 if (need_level_4 && !can_reach_level_4){ 5864 log_info("Level 4 required, but not possible -> abort"); 5865 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 5866 // send oob negative reply 5867 c_256 = NULL; 5868 c_192 = NULL; 5869 } 5870 5871 // Reply 5872 if (c_256 != zero) { 5873 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 5874 } else if (c_192 != zero){ 5875 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 5876 } else { 5877 hci_stack->classic_oob_con_handle = connection->con_handle; 5878 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 5879 } 5880 return true; 5881 } 5882 #endif 5883 5884 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 5885 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 5886 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 5887 return true; 5888 } 5889 5890 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 5891 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 5892 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 5893 return true; 5894 } 5895 5896 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 5897 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 5898 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 5899 return true; 5900 } 5901 5902 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 5903 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 5904 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 5905 connection->state = SENT_DISCONNECT; 5906 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5907 return true; 5908 } 5909 5910 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 5911 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 5912 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 5913 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 5914 return true; 5915 } 5916 5917 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 5918 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 5919 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 5920 return true; 5921 } 5922 5923 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 5924 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 5925 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 5926 return true; 5927 } 5928 5929 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 5930 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 5931 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 5932 return true; 5933 } 5934 5935 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 5936 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 5937 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 5938 return true; 5939 } 5940 5941 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 5942 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 5943 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 5944 return true; 5945 } 5946 #endif 5947 5948 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 5949 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 5950 #ifdef ENABLE_CLASSIC 5951 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 5952 #endif 5953 if (connection->state != SENT_DISCONNECT){ 5954 connection->state = SENT_DISCONNECT; 5955 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 5956 return true; 5957 } 5958 } 5959 5960 #ifdef ENABLE_CLASSIC 5961 uint16_t sniff_min_interval; 5962 switch (connection->sniff_min_interval){ 5963 case 0: 5964 break; 5965 case 0xffff: 5966 connection->sniff_min_interval = 0; 5967 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 5968 return true; 5969 default: 5970 sniff_min_interval = connection->sniff_min_interval; 5971 connection->sniff_min_interval = 0; 5972 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 5973 return true; 5974 } 5975 5976 if (connection->sniff_subrating_max_latency != 0xffff){ 5977 uint16_t max_latency = connection->sniff_subrating_max_latency; 5978 connection->sniff_subrating_max_latency = 0; 5979 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 5980 return true; 5981 } 5982 5983 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 5984 uint8_t service_type = (uint8_t) connection->qos_service_type; 5985 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 5986 hci_send_cmd(&hci_qos_setup, connection->con_handle, 0, service_type, connection->qos_token_rate, connection->qos_peak_bandwidth, connection->qos_latency, connection->qos_delay_variation); 5987 return true; 5988 } 5989 5990 if (connection->request_role != HCI_ROLE_INVALID){ 5991 hci_role_t role = connection->request_role; 5992 connection->request_role = HCI_ROLE_INVALID; 5993 hci_send_cmd(&hci_switch_role_command, connection->address, role); 5994 return true; 5995 } 5996 #endif 5997 5998 if (connection->gap_connection_tasks != 0){ 5999 #ifdef ENABLE_CLASSIC 6000 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6001 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6002 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6003 return true; 6004 } 6005 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6006 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6007 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6008 return true; 6009 } 6010 #endif 6011 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6012 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6013 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6014 return true; 6015 } 6016 } 6017 6018 #ifdef ENABLE_BLE 6019 switch (connection->le_con_parameter_update_state){ 6020 // response to L2CAP CON PARAMETER UPDATE REQUEST 6021 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6022 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6023 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6024 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6025 0x0000, 0xffff); 6026 return true; 6027 case CON_PARAMETER_UPDATE_REPLY: 6028 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6029 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6030 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6031 0x0000, 0xffff); 6032 return true; 6033 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6034 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6035 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6036 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6037 return true; 6038 default: 6039 break; 6040 } 6041 if (connection->le_phy_update_all_phys != 0xffu){ 6042 uint8_t all_phys = connection->le_phy_update_all_phys; 6043 connection->le_phy_update_all_phys = 0xff; 6044 hci_send_cmd(&hci_le_set_phy, connection->con_handle, all_phys, connection->le_phy_update_tx_phys, connection->le_phy_update_rx_phys, connection->le_phy_update_phy_options); 6045 return true; 6046 } 6047 #endif 6048 } 6049 return false; 6050 } 6051 6052 static void hci_run(void){ 6053 6054 // stack state sub statemachines 6055 // halting needs to be called even if we cannot send command packet now 6056 switch (hci_stack->state) { 6057 case HCI_STATE_INITIALIZING: 6058 hci_initializing_run(); 6059 return; 6060 case HCI_STATE_HALTING: 6061 hci_halting_run(); 6062 return; 6063 case HCI_STATE_FALLING_ASLEEP: 6064 hci_falling_asleep_run(); 6065 return; 6066 default: 6067 break; 6068 } 6069 6070 bool done; 6071 6072 // send continuation fragments first, as they block the prepared packet buffer 6073 done = hci_run_acl_fragments(); 6074 if (done) return; 6075 6076 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6077 // send host num completed packets next as they don't require num_cmd_packets > 0 6078 if (!hci_can_send_comand_packet_transport()) return; 6079 if (hci_stack->host_completed_packets){ 6080 hci_host_num_completed_packets(); 6081 return; 6082 } 6083 #endif 6084 6085 if (!hci_can_send_command_packet_now()) return; 6086 6087 // global/non-connection oriented commands 6088 6089 6090 #ifdef ENABLE_CLASSIC 6091 // general gap classic 6092 done = hci_run_general_gap_classic(); 6093 if (done) return; 6094 #endif 6095 6096 #ifdef ENABLE_BLE 6097 // general gap le 6098 done = hci_run_general_gap_le(); 6099 if (done) return; 6100 #endif 6101 6102 // send pending HCI commands 6103 hci_run_general_pending_commands(); 6104 } 6105 6106 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6107 // house-keeping 6108 6109 #ifdef ENABLE_CLASSIC 6110 bd_addr_t addr; 6111 hci_connection_t * conn; 6112 #endif 6113 #ifdef ENABLE_LE_CENTRAL 6114 uint8_t initiator_filter_policy; 6115 #endif 6116 6117 uint16_t opcode = little_endian_read_16(packet, 0); 6118 switch (opcode) { 6119 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6120 hci_stack->loopback_mode = packet[3]; 6121 break; 6122 6123 #ifdef ENABLE_CLASSIC 6124 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6125 reverse_bd_addr(&packet[3], addr); 6126 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6127 6128 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6129 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6130 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6131 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6132 } 6133 6134 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6135 if (!conn) { 6136 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6137 if (!conn) { 6138 // notify client that alloc failed 6139 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6140 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6141 } 6142 conn->state = SEND_CREATE_CONNECTION; 6143 conn->role = HCI_ROLE_MASTER; 6144 } 6145 6146 log_info("conn state %u", conn->state); 6147 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6148 switch (conn->state) { 6149 // if connection active exists 6150 case OPEN: 6151 // and OPEN, emit connection complete command 6152 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6153 // packet not sent to controller 6154 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6155 case RECEIVED_DISCONNECTION_COMPLETE: 6156 // create connection triggered in disconnect complete event, let's do it now 6157 break; 6158 case SEND_CREATE_CONNECTION: 6159 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6160 if (hci_classic_operation_active()){ 6161 return ERROR_CODE_SUCCESS; 6162 } 6163 #endif 6164 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6165 break; 6166 default: 6167 // otherwise, just ignore as it is already in the open process 6168 // packet not sent to controller 6169 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6170 } 6171 conn->state = SENT_CREATE_CONNECTION; 6172 6173 // track outgoing connection 6174 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6175 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6176 break; 6177 6178 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6179 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6180 // setup_synchronous_connection? Voice setting at offset 22 6181 // TODO: compare to current setting if sco connection already active 6182 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6183 break; 6184 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6185 // accept_synchronous_connection? Voice setting at offset 18 6186 // TODO: compare to current setting if sco connection already active 6187 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6188 // track outgoing connection 6189 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6190 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6191 break; 6192 #endif 6193 #endif 6194 6195 #ifdef ENABLE_BLE 6196 #ifdef ENABLE_LE_CENTRAL 6197 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6198 // white list used? 6199 initiator_filter_policy = packet[7]; 6200 switch (initiator_filter_policy) { 6201 case 0: 6202 // whitelist not used 6203 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6204 break; 6205 case 1: 6206 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6207 break; 6208 default: 6209 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6210 break; 6211 } 6212 // track outgoing connection 6213 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6214 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6215 break; 6216 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6217 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6218 break; 6219 #endif 6220 #endif 6221 default: 6222 break; 6223 } 6224 6225 hci_stack->num_cmd_packets--; 6226 6227 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6228 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6229 if (err != 0){ 6230 return ERROR_CODE_HARDWARE_FAILURE; 6231 } 6232 return ERROR_CODE_SUCCESS; 6233 } 6234 6235 // disconnect because of security block 6236 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6237 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6238 if (!connection) return; 6239 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6240 } 6241 6242 6243 // Configure Secure Simple Pairing 6244 6245 #ifdef ENABLE_CLASSIC 6246 6247 // enable will enable SSP during init 6248 void gap_ssp_set_enable(int enable){ 6249 hci_stack->ssp_enable = enable; 6250 } 6251 6252 static int hci_local_ssp_activated(void){ 6253 return gap_ssp_supported() && hci_stack->ssp_enable; 6254 } 6255 6256 // if set, BTstack will respond to io capability request using authentication requirement 6257 void gap_ssp_set_io_capability(int io_capability){ 6258 hci_stack->ssp_io_capability = io_capability; 6259 } 6260 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6261 hci_stack->ssp_authentication_requirement = authentication_requirement; 6262 } 6263 6264 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6265 void gap_ssp_set_auto_accept(int auto_accept){ 6266 hci_stack->ssp_auto_accept = auto_accept; 6267 } 6268 6269 void gap_secure_connections_enable(bool enable){ 6270 hci_stack->secure_connections_enable = enable; 6271 } 6272 bool gap_secure_connections_active(void){ 6273 return hci_stack->secure_connections_active; 6274 } 6275 6276 #endif 6277 6278 // va_list part of hci_send_cmd 6279 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6280 if (!hci_can_send_command_packet_now()){ 6281 log_error("hci_send_cmd called but cannot send packet now"); 6282 return ERROR_CODE_COMMAND_DISALLOWED; 6283 } 6284 6285 // for HCI INITIALIZATION 6286 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6287 hci_stack->last_cmd_opcode = cmd->opcode; 6288 6289 hci_reserve_packet_buffer(); 6290 uint8_t * packet = hci_stack->hci_packet_buffer; 6291 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6292 uint8_t status = hci_send_cmd_packet(packet, size); 6293 6294 // release packet buffer on error or for synchronous transport implementations 6295 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6296 hci_release_packet_buffer(); 6297 hci_emit_transport_packet_sent(); 6298 } 6299 6300 return status; 6301 } 6302 6303 /** 6304 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6305 */ 6306 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6307 va_list argptr; 6308 va_start(argptr, cmd); 6309 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6310 va_end(argptr); 6311 return status; 6312 } 6313 6314 // Create various non-HCI events. 6315 // TODO: generalize, use table similar to hci_create_command 6316 6317 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6318 // dump packet 6319 if (dump) { 6320 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6321 } 6322 6323 // dispatch to all event handlers 6324 btstack_linked_list_iterator_t it; 6325 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6326 while (btstack_linked_list_iterator_has_next(&it)){ 6327 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6328 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6329 } 6330 } 6331 6332 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6333 if (!hci_stack->acl_packet_handler) return; 6334 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6335 } 6336 6337 #ifdef ENABLE_CLASSIC 6338 static void hci_notify_if_sco_can_send_now(void){ 6339 // notify SCO sender if waiting 6340 if (!hci_stack->sco_waiting_for_can_send_now) return; 6341 if (hci_can_send_sco_packet_now()){ 6342 hci_stack->sco_waiting_for_can_send_now = 0; 6343 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6344 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6345 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6346 } 6347 } 6348 6349 // parsing end emitting has been merged to reduce code size 6350 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6351 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6352 6353 uint8_t * eir_data; 6354 ad_context_t context; 6355 const uint8_t * name; 6356 uint8_t name_len; 6357 6358 if (size < 3) return; 6359 6360 int event_type = hci_event_packet_get_type(packet); 6361 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6362 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6363 6364 switch (event_type){ 6365 case HCI_EVENT_INQUIRY_RESULT: 6366 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6367 if (size != (3 + (num_responses * 14))) return; 6368 break; 6369 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6370 if (size != 257) return; 6371 if (num_responses != 1) return; 6372 break; 6373 default: 6374 return; 6375 } 6376 6377 // event[1] is set at the end 6378 int i; 6379 for (i=0; i<num_responses;i++){ 6380 memset(event, 0, sizeof(event)); 6381 event[0] = GAP_EVENT_INQUIRY_RESULT; 6382 uint8_t event_size = 27; // if name is not set by EIR 6383 6384 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6385 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6386 (void)memcpy(&event[9], 6387 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6388 3); // class of device 6389 (void)memcpy(&event[12], 6390 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6391 2); // clock offset 6392 6393 switch (event_type){ 6394 case HCI_EVENT_INQUIRY_RESULT: 6395 // 14,15,16,17 = 0, size 18 6396 break; 6397 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6398 event[14] = 1; 6399 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6400 // 16,17 = 0, size 18 6401 break; 6402 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6403 event[14] = 1; 6404 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6405 // EIR packets only contain a single inquiry response 6406 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 6407 name = NULL; 6408 // Iterate over EIR data 6409 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 6410 uint8_t data_type = ad_iterator_get_data_type(&context); 6411 uint8_t data_size = ad_iterator_get_data_len(&context); 6412 const uint8_t * data = ad_iterator_get_data(&context); 6413 // Prefer Complete Local Name over Shortened Local Name 6414 switch (data_type){ 6415 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 6416 if (name) continue; 6417 /* fall through */ 6418 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 6419 name = data; 6420 name_len = data_size; 6421 break; 6422 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 6423 if (data_size != 8) break; 6424 event[16] = 1; 6425 memcpy(&event[17], data, 8); 6426 break; 6427 default: 6428 break; 6429 } 6430 } 6431 if (name){ 6432 event[25] = 1; 6433 // truncate name if needed 6434 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 6435 event[26] = len; 6436 (void)memcpy(&event[27], name, len); 6437 event_size += len; 6438 } 6439 break; 6440 default: 6441 return; 6442 } 6443 event[1] = event_size - 2; 6444 hci_emit_event(event, event_size, 1); 6445 } 6446 } 6447 #endif 6448 6449 void hci_emit_state(void){ 6450 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 6451 uint8_t event[3]; 6452 event[0] = BTSTACK_EVENT_STATE; 6453 event[1] = sizeof(event) - 2u; 6454 event[2] = hci_stack->state; 6455 hci_emit_event(event, sizeof(event), 1); 6456 } 6457 6458 #ifdef ENABLE_CLASSIC 6459 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6460 uint8_t event[13]; 6461 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 6462 event[1] = sizeof(event) - 2; 6463 event[2] = status; 6464 little_endian_store_16(event, 3, con_handle); 6465 reverse_bd_addr(address, &event[5]); 6466 event[11] = 1; // ACL connection 6467 event[12] = 0; // encryption disabled 6468 hci_emit_event(event, sizeof(event), 1); 6469 } 6470 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 6471 if (disable_l2cap_timeouts) return; 6472 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 6473 uint8_t event[4]; 6474 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 6475 event[1] = sizeof(event) - 2; 6476 little_endian_store_16(event, 2, conn->con_handle); 6477 hci_emit_event(event, sizeof(event), 1); 6478 } 6479 #endif 6480 6481 #ifdef ENABLE_BLE 6482 #ifdef ENABLE_LE_CENTRAL 6483 static void hci_emit_le_connection_complete(uint8_t address_type, const bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6484 uint8_t event[21]; 6485 event[0] = HCI_EVENT_LE_META; 6486 event[1] = sizeof(event) - 2u; 6487 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 6488 event[3] = status; 6489 little_endian_store_16(event, 4, con_handle); 6490 event[6] = 0; // TODO: role 6491 event[7] = address_type; 6492 reverse_bd_addr(address, &event[8]); 6493 little_endian_store_16(event, 14, 0); // interval 6494 little_endian_store_16(event, 16, 0); // latency 6495 little_endian_store_16(event, 18, 0); // supervision timeout 6496 event[20] = 0; // master clock accuracy 6497 hci_emit_event(event, sizeof(event), 1); 6498 } 6499 #endif 6500 #endif 6501 6502 static void hci_emit_transport_packet_sent(void){ 6503 // notify upper stack that it might be possible to send again 6504 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 6505 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 6506 } 6507 6508 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 6509 uint8_t event[6]; 6510 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 6511 event[1] = sizeof(event) - 2u; 6512 event[2] = 0; // status = OK 6513 little_endian_store_16(event, 3, con_handle); 6514 event[5] = reason; 6515 hci_emit_event(event, sizeof(event), 1); 6516 } 6517 6518 static void hci_emit_nr_connections_changed(void){ 6519 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 6520 uint8_t event[3]; 6521 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 6522 event[1] = sizeof(event) - 2u; 6523 event[2] = nr_hci_connections(); 6524 hci_emit_event(event, sizeof(event), 1); 6525 } 6526 6527 static void hci_emit_hci_open_failed(void){ 6528 log_info("BTSTACK_EVENT_POWERON_FAILED"); 6529 uint8_t event[2]; 6530 event[0] = BTSTACK_EVENT_POWERON_FAILED; 6531 event[1] = sizeof(event) - 2u; 6532 hci_emit_event(event, sizeof(event), 1); 6533 } 6534 6535 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 6536 log_info("hci_emit_dedicated_bonding_result %u ", status); 6537 uint8_t event[9]; 6538 int pos = 0; 6539 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 6540 event[pos++] = sizeof(event) - 2u; 6541 event[pos++] = status; 6542 reverse_bd_addr(address, &event[pos]); 6543 hci_emit_event(event, sizeof(event), 1); 6544 } 6545 6546 6547 #ifdef ENABLE_CLASSIC 6548 6549 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 6550 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 6551 uint8_t event[5]; 6552 int pos = 0; 6553 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 6554 event[pos++] = sizeof(event) - 2; 6555 little_endian_store_16(event, 2, con_handle); 6556 pos += 2; 6557 event[pos++] = level; 6558 hci_emit_event(event, sizeof(event), 1); 6559 } 6560 6561 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 6562 if (!connection) return LEVEL_0; 6563 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 6564 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 6565 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 6566 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 6567 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 6568 // LEVEL 4 always requires 128 bit encrytion key size 6569 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 6570 security_level = LEVEL_3; 6571 } 6572 return security_level; 6573 } 6574 6575 static void hci_emit_discoverable_enabled(uint8_t enabled){ 6576 log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled); 6577 uint8_t event[3]; 6578 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 6579 event[1] = sizeof(event) - 2; 6580 event[2] = enabled; 6581 hci_emit_event(event, sizeof(event), 1); 6582 } 6583 6584 // query if remote side supports eSCO 6585 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 6586 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6587 if (!connection) return false; 6588 return (connection->remote_supported_features[0] & 1) != 0; 6589 } 6590 6591 static bool hci_ssp_supported(hci_connection_t * connection){ 6592 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 6593 return (connection->bonding_flags & mask) == mask; 6594 } 6595 6596 // query if remote side supports SSP 6597 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 6598 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6599 if (!connection) return false; 6600 return hci_ssp_supported(connection) ? 1 : 0; 6601 } 6602 6603 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 6604 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 6605 } 6606 6607 /** 6608 * Check if remote supported features query has completed 6609 */ 6610 bool hci_remote_features_available(hci_con_handle_t handle){ 6611 hci_connection_t * connection = hci_connection_for_handle(handle); 6612 if (!connection) return false; 6613 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 6614 } 6615 6616 /** 6617 * Trigger remote supported features query 6618 */ 6619 6620 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 6621 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 6622 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6623 } 6624 } 6625 6626 void hci_remote_features_query(hci_con_handle_t con_handle){ 6627 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6628 if (!connection) return; 6629 hci_trigger_remote_features_for_connection(connection); 6630 hci_run(); 6631 } 6632 6633 // GAP API 6634 /** 6635 * @bbrief enable/disable bonding. default is enabled 6636 * @praram enabled 6637 */ 6638 void gap_set_bondable_mode(int enable){ 6639 hci_stack->bondable = enable ? 1 : 0; 6640 } 6641 /** 6642 * @brief Get bondable mode. 6643 * @return 1 if bondable 6644 */ 6645 int gap_get_bondable_mode(void){ 6646 return hci_stack->bondable; 6647 } 6648 6649 /** 6650 * @brief map link keys to security levels 6651 */ 6652 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 6653 switch (link_key_type){ 6654 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6655 return LEVEL_4; 6656 case COMBINATION_KEY: 6657 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6658 return LEVEL_3; 6659 default: 6660 return LEVEL_2; 6661 } 6662 } 6663 6664 /** 6665 * @brief map link keys to secure connection yes/no 6666 */ 6667 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 6668 switch (link_key_type){ 6669 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6670 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6671 return true; 6672 default: 6673 return false; 6674 } 6675 } 6676 6677 /** 6678 * @brief map link keys to authenticated 6679 */ 6680 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 6681 switch (link_key_type){ 6682 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6683 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6684 return true; 6685 default: 6686 return false; 6687 } 6688 } 6689 6690 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 6691 log_info("gap_mitm_protection_required_for_security_level %u", level); 6692 return level > LEVEL_2; 6693 } 6694 6695 /** 6696 * @brief get current security level 6697 */ 6698 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 6699 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6700 if (!connection) return LEVEL_0; 6701 return gap_security_level_for_connection(connection); 6702 } 6703 6704 /** 6705 * @brief request connection to device to 6706 * @result GAP_AUTHENTICATION_RESULT 6707 */ 6708 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 6709 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6710 if (!connection){ 6711 hci_emit_security_level(con_handle, LEVEL_0); 6712 return; 6713 } 6714 6715 btstack_assert(hci_is_le_connection(connection) == false); 6716 6717 // Core Spec 5.2, GAP 5.2.2: "When in Secure Connections Only mode, all services (except those allowed to have Security Mode 4, Level 0) 6718 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 6719 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 6720 requested_level = LEVEL_4; 6721 } 6722 6723 gap_security_level_t current_level = gap_security_level(con_handle); 6724 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 6725 requested_level, connection->requested_security_level, current_level); 6726 6727 // authentication active if authentication request was sent or planned level > 0 6728 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 6729 if (authentication_active){ 6730 // authentication already active 6731 if (connection->requested_security_level < requested_level){ 6732 // increase requested level as new level is higher 6733 // TODO: handle re-authentication when done 6734 connection->requested_security_level = requested_level; 6735 } 6736 } else { 6737 // no request active, notify if security sufficient 6738 if (requested_level <= current_level){ 6739 hci_emit_security_level(con_handle, current_level); 6740 return; 6741 } 6742 6743 // store request 6744 connection->requested_security_level = requested_level; 6745 6746 // request remote features if not already active 6747 hci_remote_features_query(con_handle); 6748 6749 // start to authenticate connection 6750 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 6751 hci_run(); 6752 } 6753 } 6754 6755 /** 6756 * @brief start dedicated bonding with device. disconnect after bonding 6757 * @param device 6758 * @param request MITM protection 6759 * @result GAP_DEDICATED_BONDING_COMPLETE 6760 */ 6761 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 6762 6763 // create connection state machine 6764 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 6765 6766 if (!connection){ 6767 return BTSTACK_MEMORY_ALLOC_FAILED; 6768 } 6769 6770 // delete linkn key 6771 gap_drop_link_key_for_bd_addr(device); 6772 6773 // configure LEVEL_2/3, dedicated bonding 6774 connection->state = SEND_CREATE_CONNECTION; 6775 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 6776 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 6777 connection->bonding_flags = BONDING_DEDICATED; 6778 6779 // wait for GAP Security Result and send GAP Dedicated Bonding complete 6780 6781 // handle: connnection failure (connection complete != ok) 6782 // handle: authentication failure 6783 // handle: disconnect on done 6784 6785 hci_run(); 6786 6787 return 0; 6788 } 6789 6790 void gap_set_local_name(const char * local_name){ 6791 hci_stack->local_name = local_name; 6792 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 6793 // also update EIR if not set by user 6794 if (hci_stack->eir_data == NULL){ 6795 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 6796 } 6797 hci_run(); 6798 } 6799 #endif 6800 6801 6802 #ifdef ENABLE_BLE 6803 6804 #ifdef ENABLE_LE_CENTRAL 6805 void gap_start_scan(void){ 6806 hci_stack->le_scanning_enabled = true; 6807 hci_run(); 6808 } 6809 6810 void gap_stop_scan(void){ 6811 hci_stack->le_scanning_enabled = false; 6812 hci_run(); 6813 } 6814 6815 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 6816 hci_stack->le_scan_type = scan_type; 6817 hci_stack->le_scan_filter_policy = scanning_filter_policy; 6818 hci_stack->le_scan_interval = scan_interval; 6819 hci_stack->le_scan_window = scan_window; 6820 hci_stack->le_scanning_param_update = true; 6821 hci_run(); 6822 } 6823 6824 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 6825 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 6826 } 6827 6828 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 6829 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 6830 if (!conn){ 6831 // disallow if le connection is already outgoing 6832 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 6833 log_error("le connection already active"); 6834 return ERROR_CODE_COMMAND_DISALLOWED; 6835 } 6836 6837 log_info("gap_connect: no connection exists yet, creating context"); 6838 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 6839 if (!conn){ 6840 // notify client that alloc failed 6841 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6842 log_info("gap_connect: failed to alloc hci_connection_t"); 6843 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 6844 } 6845 6846 // set le connecting state 6847 if (hci_is_le_connection_type(addr_type)){ 6848 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 6849 } 6850 6851 conn->state = SEND_CREATE_CONNECTION; 6852 log_info("gap_connect: send create connection next"); 6853 hci_run(); 6854 return ERROR_CODE_SUCCESS; 6855 } 6856 6857 if (!hci_is_le_connection(conn) || 6858 (conn->state == SEND_CREATE_CONNECTION) || 6859 (conn->state == SENT_CREATE_CONNECTION)) { 6860 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 6861 log_error("gap_connect: classic connection or connect is already being created"); 6862 return GATT_CLIENT_IN_WRONG_STATE; 6863 } 6864 6865 // check if connection was just disconnected 6866 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 6867 log_info("gap_connect: send create connection (again)"); 6868 conn->state = SEND_CREATE_CONNECTION; 6869 hci_run(); 6870 return ERROR_CODE_SUCCESS; 6871 } 6872 6873 log_info("gap_connect: context exists with state %u", conn->state); 6874 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 6875 hci_run(); 6876 return ERROR_CODE_SUCCESS; 6877 } 6878 6879 // @assumption: only a single outgoing LE Connection exists 6880 static hci_connection_t * gap_get_outgoing_connection(void){ 6881 btstack_linked_item_t *it; 6882 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6883 hci_connection_t * conn = (hci_connection_t *) it; 6884 if (!hci_is_le_connection(conn)) continue; 6885 switch (conn->state){ 6886 case SEND_CREATE_CONNECTION: 6887 case SENT_CREATE_CONNECTION: 6888 case SENT_CANCEL_CONNECTION: 6889 return conn; 6890 default: 6891 break; 6892 }; 6893 } 6894 return NULL; 6895 } 6896 6897 uint8_t gap_connect_cancel(void){ 6898 hci_connection_t * conn = gap_get_outgoing_connection(); 6899 if (!conn) return 0; 6900 switch (conn->state){ 6901 case SEND_CREATE_CONNECTION: 6902 // skip sending create connection and emit event instead 6903 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 6904 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 6905 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 6906 btstack_memory_hci_connection_free( conn ); 6907 break; 6908 case SENT_CREATE_CONNECTION: 6909 // request to send cancel connection 6910 conn->state = SEND_CANCEL_CONNECTION; 6911 hci_run(); 6912 break; 6913 default: 6914 break; 6915 } 6916 return 0; 6917 } 6918 6919 /** 6920 * @brief Set connection parameters for outgoing connections 6921 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 6922 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 6923 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 6924 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 6925 * @param conn_latency, default: 4 6926 * @param supervision_timeout (unit: 10ms), default: 720 ms 6927 * @param min_ce_length (unit: 0.625ms), default: 10 ms 6928 * @param max_ce_length (unit: 0.625ms), default: 30 ms 6929 */ 6930 6931 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 6932 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 6933 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 6934 hci_stack->le_connection_scan_interval = conn_scan_interval; 6935 hci_stack->le_connection_scan_window = conn_scan_window; 6936 hci_stack->le_connection_interval_min = conn_interval_min; 6937 hci_stack->le_connection_interval_max = conn_interval_max; 6938 hci_stack->le_connection_latency = conn_latency; 6939 hci_stack->le_supervision_timeout = supervision_timeout; 6940 hci_stack->le_minimum_ce_length = min_ce_length; 6941 hci_stack->le_maximum_ce_length = max_ce_length; 6942 } 6943 #endif 6944 6945 /** 6946 * @brief Updates the connection parameters for a given LE connection 6947 * @param handle 6948 * @param conn_interval_min (unit: 1.25ms) 6949 * @param conn_interval_max (unit: 1.25ms) 6950 * @param conn_latency 6951 * @param supervision_timeout (unit: 10ms) 6952 * @return 0 if ok 6953 */ 6954 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 6955 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 6956 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6957 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 6958 connection->le_conn_interval_min = conn_interval_min; 6959 connection->le_conn_interval_max = conn_interval_max; 6960 connection->le_conn_latency = conn_latency; 6961 connection->le_supervision_timeout = supervision_timeout; 6962 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 6963 hci_run(); 6964 return 0; 6965 } 6966 6967 /** 6968 * @brief Request an update of the connection parameter for a given LE connection 6969 * @param handle 6970 * @param conn_interval_min (unit: 1.25ms) 6971 * @param conn_interval_max (unit: 1.25ms) 6972 * @param conn_latency 6973 * @param supervision_timeout (unit: 10ms) 6974 * @return 0 if ok 6975 */ 6976 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 6977 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 6978 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6979 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 6980 connection->le_conn_interval_min = conn_interval_min; 6981 connection->le_conn_interval_max = conn_interval_max; 6982 connection->le_conn_latency = conn_latency; 6983 connection->le_supervision_timeout = supervision_timeout; 6984 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 6985 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 6986 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 6987 return 0; 6988 } 6989 6990 #ifdef ENABLE_LE_PERIPHERAL 6991 6992 /** 6993 * @brief Set Advertisement Data 6994 * @param advertising_data_length 6995 * @param advertising_data (max 31 octets) 6996 * @note data is not copied, pointer has to stay valid 6997 */ 6998 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 6999 hci_stack->le_advertisements_data_len = advertising_data_length; 7000 hci_stack->le_advertisements_data = advertising_data; 7001 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7002 hci_run(); 7003 } 7004 7005 /** 7006 * @brief Set Scan Response Data 7007 * @param advertising_data_length 7008 * @param advertising_data (max 31 octets) 7009 * @note data is not copied, pointer has to stay valid 7010 */ 7011 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7012 hci_stack->le_scan_response_data_len = scan_response_data_length; 7013 hci_stack->le_scan_response_data = scan_response_data; 7014 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7015 hci_run(); 7016 } 7017 7018 /** 7019 * @brief Set Advertisement Parameters 7020 * @param adv_int_min 7021 * @param adv_int_max 7022 * @param adv_type 7023 * @param direct_address_type 7024 * @param direct_address 7025 * @param channel_map 7026 * @param filter_policy 7027 * 7028 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7029 */ 7030 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7031 uint8_t direct_address_typ, bd_addr_t direct_address, 7032 uint8_t channel_map, uint8_t filter_policy) { 7033 7034 hci_stack->le_advertisements_interval_min = adv_int_min; 7035 hci_stack->le_advertisements_interval_max = adv_int_max; 7036 hci_stack->le_advertisements_type = adv_type; 7037 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7038 hci_stack->le_advertisements_channel_map = channel_map; 7039 hci_stack->le_advertisements_filter_policy = filter_policy; 7040 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7041 6); 7042 7043 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7044 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7045 hci_run(); 7046 } 7047 7048 /** 7049 * @brief Enable/Disable Advertisements 7050 * @param enabled 7051 */ 7052 void gap_advertisements_enable(int enabled){ 7053 if (enabled == 0){ 7054 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7055 } else { 7056 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7057 } 7058 hci_update_advertisements_enabled_for_current_roles(); 7059 hci_run(); 7060 } 7061 7062 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7063 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7064 btstack_linked_list_iterator_t it; 7065 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7066 while (btstack_linked_list_iterator_has_next(&it)){ 7067 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7068 if ( item->advertising_handle == advertising_handle ) { 7069 return item; 7070 } 7071 } 7072 return NULL; 7073 } 7074 7075 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7076 // find free advertisement handle 7077 uint8_t advertisement_handle; 7078 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7079 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7080 } 7081 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7082 // clear 7083 memset(storage, 0, sizeof(le_advertising_set_t)); 7084 // copy params 7085 storage->advertising_handle = advertisement_handle; 7086 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7087 // add to list 7088 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7089 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7090 *out_advertising_handle = advertisement_handle; 7091 // set tasks and start 7092 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7093 hci_run(); 7094 return ERROR_CODE_SUCCESS; 7095 } 7096 7097 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7098 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7099 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7100 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7101 // set tasks and start 7102 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7103 hci_run(); 7104 return ERROR_CODE_SUCCESS; 7105 } 7106 7107 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7108 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7109 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7110 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7111 return ERROR_CODE_SUCCESS; 7112 } 7113 7114 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7115 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7116 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7117 memcpy(advertising_set->random_address, random_address, 6); 7118 // set tasks and start 7119 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7120 hci_run(); 7121 return ERROR_CODE_SUCCESS; 7122 } 7123 7124 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7125 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7126 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7127 advertising_set->adv_data = advertising_data; 7128 advertising_set->adv_data_len = advertising_data_length; 7129 // set tasks and start 7130 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7131 hci_run(); 7132 return ERROR_CODE_SUCCESS; 7133 } 7134 7135 uint8_t gap_extended_advertising_set_scan_response_data(uint8_t advertising_handle, uint16_t scan_response_data_length, const uint8_t * scan_response_data){ 7136 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7137 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7138 advertising_set->scan_data = scan_response_data; 7139 advertising_set->scan_data_len = scan_response_data_length; 7140 // set tasks and start 7141 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7142 hci_run(); 7143 return ERROR_CODE_SUCCESS; 7144 } 7145 7146 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7147 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7148 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7149 advertising_set->enable_timeout = timeout; 7150 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7151 // set tasks and start 7152 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7153 hci_run(); 7154 return ERROR_CODE_SUCCESS; 7155 } 7156 7157 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7158 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7159 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7160 // set tasks and start 7161 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7162 hci_run(); 7163 return ERROR_CODE_SUCCESS; 7164 } 7165 7166 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7167 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7168 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7169 // set tasks and start 7170 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7171 hci_run(); 7172 return ERROR_CODE_SUCCESS; 7173 } 7174 7175 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7176 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7177 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7178 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7179 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7180 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7181 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7182 // set tasks and start 7183 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7184 hci_run(); 7185 return ERROR_CODE_SUCCESS; 7186 } 7187 7188 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7189 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7190 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7191 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7192 return ERROR_CODE_SUCCESS; 7193 } 7194 7195 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7196 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7197 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7198 advertising_set->periodic_data = periodic_data; 7199 advertising_set->periodic_data_len = periodic_data_length; 7200 // set tasks and start 7201 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7202 hci_run(); 7203 return ERROR_CODE_SUCCESS; 7204 } 7205 7206 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7207 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7208 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7209 // set tasks and start 7210 advertising_set->periodic_include_adi = include_adi; 7211 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7212 hci_run(); 7213 return ERROR_CODE_SUCCESS; 7214 } 7215 7216 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7217 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7218 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7219 // set tasks and start 7220 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7221 hci_run(); 7222 return ERROR_CODE_SUCCESS; 7223 } 7224 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7225 7226 #endif 7227 7228 #endif 7229 7230 void hci_le_set_own_address_type(uint8_t own_address_type){ 7231 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7232 if (own_address_type == hci_stack->le_own_addr_type) return; 7233 hci_stack->le_own_addr_type = own_address_type; 7234 7235 #ifdef ENABLE_LE_PERIPHERAL 7236 // update advertisement parameters, too 7237 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7238 hci_run(); 7239 #endif 7240 #ifdef ENABLE_LE_CENTRAL 7241 // note: we don't update scan parameters or modify ongoing connection attempts 7242 #endif 7243 } 7244 7245 void hci_le_random_address_set(const bd_addr_t random_address){ 7246 memcpy(hci_stack->le_random_address, random_address, 6); 7247 hci_stack->le_random_address_set = true; 7248 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7249 hci_run(); 7250 } 7251 7252 #endif 7253 7254 uint8_t gap_disconnect(hci_con_handle_t handle){ 7255 hci_connection_t * conn = hci_connection_for_handle(handle); 7256 if (!conn){ 7257 hci_emit_disconnection_complete(handle, 0); 7258 return 0; 7259 } 7260 // ignore if already disconnected 7261 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7262 return 0; 7263 } 7264 conn->state = SEND_DISCONNECT; 7265 hci_run(); 7266 return 0; 7267 } 7268 7269 int gap_read_rssi(hci_con_handle_t con_handle){ 7270 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7271 if (hci_connection == NULL) return 0; 7272 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7273 hci_run(); 7274 return 1; 7275 } 7276 7277 /** 7278 * @brief Get connection type 7279 * @param con_handle 7280 * @result connection_type 7281 */ 7282 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7283 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7284 if (!conn) return GAP_CONNECTION_INVALID; 7285 switch (conn->address_type){ 7286 case BD_ADDR_TYPE_LE_PUBLIC: 7287 case BD_ADDR_TYPE_LE_RANDOM: 7288 return GAP_CONNECTION_LE; 7289 case BD_ADDR_TYPE_SCO: 7290 return GAP_CONNECTION_SCO; 7291 case BD_ADDR_TYPE_ACL: 7292 return GAP_CONNECTION_ACL; 7293 default: 7294 return GAP_CONNECTION_INVALID; 7295 } 7296 } 7297 7298 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7299 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7300 if (!conn) return HCI_ROLE_INVALID; 7301 return (hci_role_t) conn->role; 7302 } 7303 7304 7305 #ifdef ENABLE_CLASSIC 7306 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7307 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7308 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7309 conn->request_role = role; 7310 hci_run(); 7311 return ERROR_CODE_SUCCESS; 7312 } 7313 #endif 7314 7315 #ifdef ENABLE_BLE 7316 7317 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 7318 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7319 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7320 7321 conn->le_phy_update_all_phys = all_phys; 7322 conn->le_phy_update_tx_phys = tx_phys; 7323 conn->le_phy_update_rx_phys = rx_phys; 7324 conn->le_phy_update_phy_options = phy_options; 7325 7326 hci_run(); 7327 7328 return 0; 7329 } 7330 7331 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7332 // check if already in list 7333 btstack_linked_list_iterator_t it; 7334 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7335 while (btstack_linked_list_iterator_has_next(&it)) { 7336 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7337 if (entry->address_type != address_type) { 7338 continue; 7339 } 7340 if (memcmp(entry->address, address, 6) != 0) { 7341 continue; 7342 } 7343 // disallow if already scheduled to add 7344 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7345 return ERROR_CODE_COMMAND_DISALLOWED; 7346 } 7347 // still on controller, but scheduled to remove -> re-add 7348 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7349 return ERROR_CODE_SUCCESS; 7350 } 7351 // alloc and add to list 7352 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7353 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7354 entry->address_type = address_type; 7355 (void)memcpy(entry->address, address, 6); 7356 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7357 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7358 return ERROR_CODE_SUCCESS; 7359 } 7360 7361 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7362 btstack_linked_list_iterator_t it; 7363 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7364 while (btstack_linked_list_iterator_has_next(&it)){ 7365 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7366 if (entry->address_type != address_type) { 7367 continue; 7368 } 7369 if (memcmp(entry->address, address, 6) != 0) { 7370 continue; 7371 } 7372 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7373 // remove from controller if already present 7374 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7375 } else { 7376 // directly remove entry from whitelist 7377 btstack_linked_list_iterator_remove(&it); 7378 btstack_memory_whitelist_entry_free(entry); 7379 } 7380 return ERROR_CODE_SUCCESS; 7381 } 7382 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7383 } 7384 7385 static void hci_whitelist_clear(void){ 7386 btstack_linked_list_iterator_t it; 7387 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7388 while (btstack_linked_list_iterator_has_next(&it)){ 7389 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7390 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7391 // remove from controller if already present 7392 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7393 continue; 7394 } 7395 // directly remove entry from whitelist 7396 btstack_linked_list_iterator_remove(&it); 7397 btstack_memory_whitelist_entry_free(entry); 7398 } 7399 } 7400 7401 // free all entries unconditionally 7402 static void hci_whitelist_free(void){ 7403 btstack_linked_list_iterator_t lit; 7404 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 7405 while (btstack_linked_list_iterator_has_next(&lit)){ 7406 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 7407 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 7408 btstack_memory_whitelist_entry_free(entry); 7409 } 7410 } 7411 7412 /** 7413 * @brief Clear Whitelist 7414 * @return 0 if ok 7415 */ 7416 uint8_t gap_whitelist_clear(void){ 7417 hci_whitelist_clear(); 7418 hci_run(); 7419 return ERROR_CODE_SUCCESS; 7420 } 7421 7422 /** 7423 * @brief Add Device to Whitelist 7424 * @param address_typ 7425 * @param address 7426 * @return 0 if ok 7427 */ 7428 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7429 uint8_t status = hci_whitelist_add(address_type, address); 7430 if (status){ 7431 return status; 7432 } 7433 hci_run(); 7434 return ERROR_CODE_SUCCESS; 7435 } 7436 7437 /** 7438 * @brief Remove Device from Whitelist 7439 * @param address_typ 7440 * @param address 7441 * @return 0 if ok 7442 */ 7443 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7444 uint8_t status = hci_whitelist_remove(address_type, address); 7445 if (status){ 7446 return status; 7447 } 7448 hci_run(); 7449 return ERROR_CODE_SUCCESS; 7450 } 7451 7452 #ifdef ENABLE_LE_CENTRAL 7453 /** 7454 * @brief Connect with Whitelist 7455 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 7456 * @return - if ok 7457 */ 7458 uint8_t gap_connect_with_whitelist(void){ 7459 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7460 return ERROR_CODE_COMMAND_DISALLOWED; 7461 } 7462 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7463 hci_run(); 7464 return ERROR_CODE_SUCCESS; 7465 } 7466 7467 /** 7468 * @brief Auto Connection Establishment - Start Connecting to device 7469 * @param address_typ 7470 * @param address 7471 * @return 0 if ok 7472 */ 7473 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 7474 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7475 return ERROR_CODE_COMMAND_DISALLOWED; 7476 } 7477 7478 uint8_t status = hci_whitelist_add(address_type, address); 7479 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 7480 return status; 7481 } 7482 7483 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7484 7485 hci_run(); 7486 return ERROR_CODE_SUCCESS; 7487 } 7488 7489 /** 7490 * @brief Auto Connection Establishment - Stop Connecting to device 7491 * @param address_typ 7492 * @param address 7493 * @return 0 if ok 7494 */ 7495 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 7496 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7497 return ERROR_CODE_COMMAND_DISALLOWED; 7498 } 7499 7500 hci_whitelist_remove(address_type, address); 7501 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 7502 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7503 } 7504 hci_run(); 7505 return 0; 7506 } 7507 7508 /** 7509 * @brief Auto Connection Establishment - Stop everything 7510 * @note Convenience function to stop all active auto connection attempts 7511 */ 7512 uint8_t gap_auto_connection_stop_all(void){ 7513 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 7514 return ERROR_CODE_COMMAND_DISALLOWED; 7515 } 7516 hci_whitelist_clear(); 7517 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7518 hci_run(); 7519 return ERROR_CODE_SUCCESS; 7520 } 7521 7522 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 7523 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7524 if (!conn) return 0; 7525 return conn->le_connection_interval; 7526 } 7527 #endif 7528 #endif 7529 7530 #ifdef ENABLE_CLASSIC 7531 /** 7532 * @brief Set Extended Inquiry Response data 7533 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 7534 * @note has to be done before stack starts up 7535 */ 7536 void gap_set_extended_inquiry_response(const uint8_t * data){ 7537 hci_stack->eir_data = data; 7538 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7539 hci_run(); 7540 } 7541 7542 /** 7543 * @brief Start GAP Classic Inquiry 7544 * @param duration in 1.28s units 7545 * @return 0 if ok 7546 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 7547 */ 7548 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 7549 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7550 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7551 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 7552 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7553 } 7554 hci_stack->inquiry_state = duration_in_1280ms_units; 7555 hci_stack->inquiry_max_period_length = 0; 7556 hci_stack->inquiry_min_period_length = 0; 7557 hci_run(); 7558 return 0; 7559 } 7560 7561 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 7562 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7563 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7564 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7565 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7566 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7567 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7568 7569 hci_stack->inquiry_state = duration; 7570 hci_stack->inquiry_max_period_length = max_period_length; 7571 hci_stack->inquiry_min_period_length = min_period_length; 7572 hci_run(); 7573 return 0; 7574 } 7575 7576 /** 7577 * @brief Stop GAP Classic Inquiry 7578 * @return 0 if ok 7579 */ 7580 int gap_inquiry_stop(void){ 7581 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 7582 // emit inquiry complete event, before it even started 7583 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 7584 hci_emit_event(event, sizeof(event), 1); 7585 return 0; 7586 } 7587 switch (hci_stack->inquiry_state){ 7588 case GAP_INQUIRY_STATE_ACTIVE: 7589 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 7590 hci_run(); 7591 return ERROR_CODE_SUCCESS; 7592 case GAP_INQUIRY_STATE_PERIODIC: 7593 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 7594 hci_run(); 7595 return ERROR_CODE_SUCCESS; 7596 default: 7597 return ERROR_CODE_COMMAND_DISALLOWED; 7598 } 7599 } 7600 7601 void gap_inquiry_set_lap(uint32_t lap){ 7602 hci_stack->inquiry_lap = lap; 7603 } 7604 7605 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 7606 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 7607 hci_stack->inquiry_scan_window = inquiry_scan_window; 7608 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 7609 hci_run(); 7610 } 7611 7612 7613 /** 7614 * @brief Remote Name Request 7615 * @param addr 7616 * @param page_scan_repetition_mode 7617 * @param clock_offset only used when bit 15 is set 7618 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 7619 */ 7620 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 7621 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7622 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 7623 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 7624 hci_stack->remote_name_clock_offset = clock_offset; 7625 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 7626 hci_run(); 7627 return 0; 7628 } 7629 7630 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 7631 hci_stack->gap_pairing_state = state; 7632 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 7633 hci_run(); 7634 return 0; 7635 } 7636 7637 /** 7638 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 7639 * @param addr 7640 * @param pin_data 7641 * @param pin_len 7642 * @return 0 if ok 7643 */ 7644 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 7645 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7646 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 7647 hci_stack->gap_pairing_pin_len = pin_len; 7648 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 7649 } 7650 7651 /** 7652 * @brief Legacy Pairing Pin Code Response 7653 * @param addr 7654 * @param pin 7655 * @return 0 if ok 7656 */ 7657 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 7658 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, strlen(pin)); 7659 } 7660 7661 /** 7662 * @brief Abort Legacy Pairing 7663 * @param addr 7664 * @param pin 7665 * @return 0 if ok 7666 */ 7667 int gap_pin_code_negative(bd_addr_t addr){ 7668 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7669 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 7670 } 7671 7672 /** 7673 * @brief SSP Passkey Response 7674 * @param addr 7675 * @param passkey 7676 * @return 0 if ok 7677 */ 7678 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 7679 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7680 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 7681 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 7682 } 7683 7684 /** 7685 * @brief Abort SSP Passkey Entry/Pairing 7686 * @param addr 7687 * @param pin 7688 * @return 0 if ok 7689 */ 7690 int gap_ssp_passkey_negative(const bd_addr_t addr){ 7691 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7692 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 7693 } 7694 7695 /** 7696 * @brief Accept SSP Numeric Comparison 7697 * @param addr 7698 * @param passkey 7699 * @return 0 if ok 7700 */ 7701 int gap_ssp_confirmation_response(const bd_addr_t addr){ 7702 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7703 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 7704 } 7705 7706 /** 7707 * @brief Abort SSP Numeric Comparison/Pairing 7708 * @param addr 7709 * @param pin 7710 * @return 0 if ok 7711 */ 7712 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 7713 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7714 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 7715 } 7716 7717 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 7718 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 7719 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7720 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7721 connectionSetAuthenticationFlags(conn, flag); 7722 hci_run(); 7723 return ERROR_CODE_SUCCESS; 7724 } 7725 #endif 7726 7727 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 7728 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 7729 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7730 } 7731 7732 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 7733 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7734 } 7735 #endif 7736 7737 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7738 /** 7739 * @brief Report Remote OOB Data 7740 * @param bd_addr 7741 * @param c_192 Simple Pairing Hash C derived from P-192 public key 7742 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 7743 * @param c_256 Simple Pairing Hash C derived from P-256 public key 7744 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 7745 */ 7746 uint8_t gap_ssp_remote_oob_data(const bd_addr_t addr, const uint8_t * c_192, const uint8_t * r_192, const uint8_t * c_256, const uint8_t * r_256){ 7747 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7748 if (connection == NULL) { 7749 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7750 } 7751 connection->classic_oob_c_192 = c_192; 7752 connection->classic_oob_r_192 = r_192; 7753 7754 // ignore P-256 if not supported by us 7755 if (hci_stack->secure_connections_active){ 7756 connection->classic_oob_c_256 = c_256; 7757 connection->classic_oob_r_256 = r_256; 7758 } 7759 7760 return ERROR_CODE_SUCCESS; 7761 } 7762 /** 7763 * @brief Generate new OOB data 7764 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 7765 */ 7766 void gap_ssp_generate_oob_data(void){ 7767 hci_stack->classic_read_local_oob_data = true; 7768 hci_run(); 7769 } 7770 7771 #endif 7772 7773 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 7774 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 7775 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7776 if (connection == NULL) { 7777 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7778 } 7779 7780 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 7781 connection->link_key_type = type; 7782 7783 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7784 } 7785 7786 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 7787 /** 7788 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 7789 * @param inquiry_mode see bluetooth_defines.h 7790 */ 7791 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 7792 hci_stack->inquiry_mode = inquiry_mode; 7793 } 7794 7795 /** 7796 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 7797 */ 7798 void hci_set_sco_voice_setting(uint16_t voice_setting){ 7799 hci_stack->sco_voice_setting = voice_setting; 7800 } 7801 7802 /** 7803 * @brief Get SCO Voice Setting 7804 * @return current voice setting 7805 */ 7806 uint16_t hci_get_sco_voice_setting(void){ 7807 return hci_stack->sco_voice_setting; 7808 } 7809 7810 static int hci_have_usb_transport(void){ 7811 if (!hci_stack->hci_transport) return 0; 7812 const char * transport_name = hci_stack->hci_transport->name; 7813 if (!transport_name) return 0; 7814 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 7815 } 7816 7817 /** @brief Get SCO packet length for current SCO Voice setting 7818 * @note Using SCO packets of the exact length is required for USB transfer 7819 * @return Length of SCO packets in bytes (not audio frames) 7820 */ 7821 uint16_t hci_get_sco_packet_length(void){ 7822 uint16_t sco_packet_length = 0; 7823 7824 #ifdef ENABLE_SCO_OVER_HCI 7825 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 7826 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 7827 7828 if (hci_have_usb_transport()){ 7829 // see Core Spec for H2 USB Transfer. 7830 // 3 byte SCO header + 24 bytes per connection 7831 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 7832 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 7833 } else { 7834 // 3 byte SCO header + SCO packet size over the air (60 bytes) 7835 sco_packet_length = 3 + 60 * multiplier; 7836 // assert that it still fits inside an SCO buffer 7837 if (sco_packet_length > hci_stack->sco_data_packet_length){ 7838 sco_packet_length = 3 + 60; 7839 } 7840 } 7841 #endif 7842 7843 #ifdef HAVE_SCO_TRANSPORT 7844 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 7845 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 7846 sco_packet_length = 3 + 60 * multiplier; 7847 #endif 7848 return sco_packet_length; 7849 } 7850 7851 /** 7852 * @brief Sets the master/slave policy 7853 * @param policy (0: attempt to become master, 1: let connecting device decide) 7854 */ 7855 void hci_set_master_slave_policy(uint8_t policy){ 7856 hci_stack->master_slave_policy = policy; 7857 } 7858 7859 #endif 7860 7861 HCI_STATE hci_get_state(void){ 7862 return hci_stack->state; 7863 } 7864 7865 #ifdef ENABLE_CLASSIC 7866 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 7867 hci_stack->gap_classic_accept_callback = accept_callback; 7868 } 7869 #endif 7870 7871 /** 7872 * @brief Set callback for Bluetooth Hardware Error 7873 */ 7874 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 7875 hci_stack->hardware_error_callback = fn; 7876 } 7877 7878 void hci_disconnect_all(void){ 7879 btstack_linked_list_iterator_t it; 7880 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 7881 while (btstack_linked_list_iterator_has_next(&it)){ 7882 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 7883 if (con->state == SENT_DISCONNECT) continue; 7884 con->state = SEND_DISCONNECT; 7885 } 7886 hci_run(); 7887 } 7888 7889 uint16_t hci_get_manufacturer(void){ 7890 return hci_stack->manufacturer; 7891 } 7892 7893 #ifdef ENABLE_BLE 7894 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 7895 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 7896 if (!hci_con) return NULL; 7897 return &hci_con->sm_connection; 7898 } 7899 7900 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 7901 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 7902 #endif 7903 7904 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 7905 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7906 if (hci_connection == NULL) return 0; 7907 if (hci_is_le_connection(hci_connection)){ 7908 #ifdef ENABLE_BLE 7909 sm_connection_t * sm_conn = &hci_connection->sm_connection; 7910 if (sm_conn->sm_connection_encrypted) { 7911 return sm_conn->sm_actual_encryption_key_size; 7912 } 7913 #endif 7914 } else { 7915 #ifdef ENABLE_CLASSIC 7916 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 7917 return hci_connection->encryption_key_size; 7918 } 7919 #endif 7920 } 7921 return 0; 7922 } 7923 7924 bool gap_authenticated(hci_con_handle_t con_handle){ 7925 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7926 if (hci_connection == NULL) return false; 7927 7928 switch (hci_connection->address_type){ 7929 #ifdef ENABLE_BLE 7930 case BD_ADDR_TYPE_LE_PUBLIC: 7931 case BD_ADDR_TYPE_LE_RANDOM: 7932 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 7933 return hci_connection->sm_connection.sm_connection_authenticated != 0; 7934 #endif 7935 #ifdef ENABLE_CLASSIC 7936 case BD_ADDR_TYPE_SCO: 7937 case BD_ADDR_TYPE_ACL: 7938 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 7939 #endif 7940 default: 7941 return false; 7942 } 7943 } 7944 7945 bool gap_secure_connection(hci_con_handle_t con_handle){ 7946 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7947 if (hci_connection == NULL) return 0; 7948 7949 switch (hci_connection->address_type){ 7950 #ifdef ENABLE_BLE 7951 case BD_ADDR_TYPE_LE_PUBLIC: 7952 case BD_ADDR_TYPE_LE_RANDOM: 7953 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 7954 return hci_connection->sm_connection.sm_connection_sc != 0; 7955 #endif 7956 #ifdef ENABLE_CLASSIC 7957 case BD_ADDR_TYPE_SCO: 7958 case BD_ADDR_TYPE_ACL: 7959 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 7960 #endif 7961 default: 7962 return false; 7963 } 7964 } 7965 7966 bool gap_bonded(hci_con_handle_t con_handle){ 7967 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7968 if (hci_connection == NULL) return 0; 7969 7970 #ifdef ENABLE_CLASSIC 7971 link_key_t link_key; 7972 link_key_type_t link_key_type; 7973 #endif 7974 switch (hci_connection->address_type){ 7975 #ifdef ENABLE_BLE 7976 case BD_ADDR_TYPE_LE_PUBLIC: 7977 case BD_ADDR_TYPE_LE_RANDOM: 7978 return hci_connection->sm_connection.sm_le_db_index >= 0; 7979 #endif 7980 #ifdef ENABLE_CLASSIC 7981 case BD_ADDR_TYPE_SCO: 7982 case BD_ADDR_TYPE_ACL: 7983 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 7984 #endif 7985 default: 7986 return false; 7987 } 7988 } 7989 7990 #ifdef ENABLE_BLE 7991 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 7992 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 7993 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 7994 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 7995 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 7996 return sm_conn->sm_connection_authorization_state; 7997 } 7998 #endif 7999 8000 #ifdef ENABLE_CLASSIC 8001 uint8_t gap_sniff_mode_enter(hci_con_handle_t con_handle, uint16_t sniff_min_interval, uint16_t sniff_max_interval, uint16_t sniff_attempt, uint16_t sniff_timeout){ 8002 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8003 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8004 conn->sniff_min_interval = sniff_min_interval; 8005 conn->sniff_max_interval = sniff_max_interval; 8006 conn->sniff_attempt = sniff_attempt; 8007 conn->sniff_timeout = sniff_timeout; 8008 hci_run(); 8009 return 0; 8010 } 8011 8012 /** 8013 * @brief Exit Sniff mode 8014 * @param con_handle 8015 @ @return 0 if ok 8016 */ 8017 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8018 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8019 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8020 conn->sniff_min_interval = 0xffff; 8021 hci_run(); 8022 return 0; 8023 } 8024 8025 uint8_t gap_sniff_subrating_configure(hci_con_handle_t con_handle, uint16_t max_latency, uint16_t min_remote_timeout, uint16_t min_local_timeout){ 8026 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8027 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8028 conn->sniff_subrating_max_latency = max_latency; 8029 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8030 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8031 hci_run(); 8032 return ERROR_CODE_SUCCESS; 8033 } 8034 8035 uint8_t gap_qos_set(hci_con_handle_t con_handle, hci_service_type_t service_type, uint32_t token_rate, uint32_t peak_bandwidth, uint32_t latency, uint32_t delay_variation){ 8036 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8037 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8038 conn->qos_service_type = service_type; 8039 conn->qos_token_rate = token_rate; 8040 conn->qos_peak_bandwidth = peak_bandwidth; 8041 conn->qos_latency = latency; 8042 conn->qos_delay_variation = delay_variation; 8043 hci_run(); 8044 return ERROR_CODE_SUCCESS; 8045 } 8046 8047 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8048 hci_stack->new_page_scan_interval = page_scan_interval; 8049 hci_stack->new_page_scan_window = page_scan_window; 8050 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8051 hci_run(); 8052 } 8053 8054 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8055 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8056 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8057 hci_run(); 8058 } 8059 8060 void gap_set_page_timeout(uint16_t page_timeout){ 8061 hci_stack->page_timeout = page_timeout; 8062 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8063 hci_run(); 8064 } 8065 8066 #endif 8067 8068 void hci_halting_defer(void){ 8069 if (hci_stack->state != HCI_STATE_HALTING) return; 8070 switch (hci_stack->substate){ 8071 case HCI_HALTING_READY_FOR_CLOSE: 8072 hci_stack->substate = HCI_HALTING_DEFER_CLOSE; 8073 break; 8074 default: 8075 break; 8076 } 8077 } 8078 8079 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8080 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8081 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8082 if (le_device_db_index >= le_device_db_max_count()) return; 8083 uint8_t offset = le_device_db_index >> 3; 8084 uint8_t mask = 1 << (le_device_db_index & 7); 8085 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8086 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8087 // note: go back to remove entries, otherwise, a remove + add will skip the add 8088 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8089 } 8090 } 8091 8092 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8093 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8094 if (le_device_db_index >= le_device_db_max_count()) return; 8095 uint8_t offset = le_device_db_index >> 3; 8096 uint8_t mask = 1 << (le_device_db_index & 7); 8097 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8098 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8099 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8100 } 8101 } 8102 8103 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8104 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8105 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8106 } 8107 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8108 // restart le resolving list update 8109 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8110 } 8111 return ERROR_CODE_SUCCESS; 8112 } 8113 #endif 8114 8115 #ifdef ENABLE_BLE 8116 #ifdef ENABLE_LE_CENTRAL 8117 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8118 8119 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8120 // check if already in list 8121 btstack_linked_list_iterator_t it; 8122 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8123 while (btstack_linked_list_iterator_has_next(&it)) { 8124 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8125 if (entry->sid != advertising_sid) { 8126 continue; 8127 } 8128 if (entry->address_type != address_type) { 8129 continue; 8130 } 8131 if (memcmp(entry->address, address, 6) != 0) { 8132 continue; 8133 } 8134 // disallow if already scheduled to add 8135 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8136 return ERROR_CODE_COMMAND_DISALLOWED; 8137 } 8138 // still on controller, but scheduled to remove -> re-add 8139 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8140 return ERROR_CODE_SUCCESS; 8141 } 8142 // alloc and add to list 8143 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8144 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8145 entry->sid = advertising_sid; 8146 entry->address_type = address_type; 8147 (void)memcpy(entry->address, address, 6); 8148 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8149 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8150 return ERROR_CODE_SUCCESS; 8151 } 8152 8153 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8154 btstack_linked_list_iterator_t it; 8155 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8156 while (btstack_linked_list_iterator_has_next(&it)){ 8157 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8158 if (entry->sid != advertising_sid) { 8159 continue; 8160 } 8161 if (entry->address_type != address_type) { 8162 continue; 8163 } 8164 if (memcmp(entry->address, address, 6) != 0) { 8165 continue; 8166 } 8167 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8168 // remove from controller if already present 8169 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8170 } else { 8171 // directly remove entry from whitelist 8172 btstack_linked_list_iterator_remove(&it); 8173 btstack_memory_periodic_advertiser_list_entry_free(entry); 8174 } 8175 return ERROR_CODE_SUCCESS; 8176 } 8177 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8178 } 8179 8180 static void hci_periodic_advertiser_list_clear(void){ 8181 btstack_linked_list_iterator_t it; 8182 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8183 while (btstack_linked_list_iterator_has_next(&it)){ 8184 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8185 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8186 // remove from controller if already present 8187 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8188 continue; 8189 } 8190 // directly remove entry from whitelist 8191 btstack_linked_list_iterator_remove(&it); 8192 btstack_memory_periodic_advertiser_list_entry_free(entry); 8193 } 8194 } 8195 8196 // free all entries unconditionally 8197 static void hci_periodic_advertiser_list_free(void){ 8198 btstack_linked_list_iterator_t lit; 8199 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8200 while (btstack_linked_list_iterator_has_next(&lit)){ 8201 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8202 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8203 btstack_memory_periodic_advertiser_list_entry_free(entry); 8204 } 8205 } 8206 8207 uint8_t gap_periodic_advertiser_list_clear(void){ 8208 hci_periodic_advertiser_list_clear(); 8209 hci_run(); 8210 return ERROR_CODE_SUCCESS; 8211 } 8212 8213 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8214 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8215 if (status){ 8216 return status; 8217 } 8218 hci_run(); 8219 return ERROR_CODE_SUCCESS; 8220 } 8221 8222 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8223 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8224 if (status){ 8225 return status; 8226 } 8227 hci_run(); 8228 return ERROR_CODE_SUCCESS; 8229 } 8230 8231 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8232 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8233 // abort if already active 8234 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8235 return ERROR_CODE_COMMAND_DISALLOWED; 8236 } 8237 // store request 8238 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8239 hci_stack->le_periodic_sync_options = options; 8240 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8241 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8242 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8243 hci_stack->le_periodic_sync_skip = skip; 8244 hci_stack->le_periodic_sync_timeout = sync_timeout; 8245 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8246 8247 hci_run(); 8248 return ERROR_CODE_SUCCESS; 8249 } 8250 8251 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8252 // abort if not requested 8253 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8254 return ERROR_CODE_COMMAND_DISALLOWED; 8255 } 8256 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8257 hci_run(); 8258 return ERROR_CODE_SUCCESS; 8259 } 8260 8261 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8262 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8263 return ERROR_CODE_COMMAND_DISALLOWED; 8264 } 8265 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8266 hci_run(); 8267 return ERROR_CODE_SUCCESS; 8268 } 8269 8270 #endif 8271 #endif 8272 #endif 8273 8274 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 8275 void hci_setup_test_connections_fuzz(void){ 8276 hci_connection_t * conn; 8277 8278 // default address: 66:55:44:33:00:01 8279 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 8280 8281 // setup Controller info 8282 hci_stack->num_cmd_packets = 255; 8283 hci_stack->acl_packets_total_num = 255; 8284 8285 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 8286 addr[5] = 0x01; 8287 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8288 conn->con_handle = addr[5]; 8289 conn->role = HCI_ROLE_SLAVE; 8290 conn->state = RECEIVED_CONNECTION_REQUEST; 8291 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8292 8293 // setup incoming Classic SCO connection with con handle 0x0002 8294 addr[5] = 0x02; 8295 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8296 conn->con_handle = addr[5]; 8297 conn->role = HCI_ROLE_SLAVE; 8298 conn->state = RECEIVED_CONNECTION_REQUEST; 8299 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8300 8301 // setup ready Classic ACL connection with con handle 0x0003 8302 addr[5] = 0x03; 8303 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8304 conn->con_handle = addr[5]; 8305 conn->role = HCI_ROLE_SLAVE; 8306 conn->state = OPEN; 8307 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8308 8309 // setup ready Classic SCO connection with con handle 0x0004 8310 addr[5] = 0x04; 8311 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8312 conn->con_handle = addr[5]; 8313 conn->role = HCI_ROLE_SLAVE; 8314 conn->state = OPEN; 8315 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8316 8317 // setup ready LE ACL connection with con handle 0x005 and public address 8318 addr[5] = 0x05; 8319 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 8320 conn->con_handle = addr[5]; 8321 conn->role = HCI_ROLE_SLAVE; 8322 conn->state = OPEN; 8323 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8324 conn->sm_connection.sm_connection_encrypted = 1; 8325 } 8326 8327 void hci_free_connections_fuzz(void){ 8328 btstack_linked_list_iterator_t it; 8329 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8330 while (btstack_linked_list_iterator_has_next(&it)){ 8331 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8332 btstack_linked_list_iterator_remove(&it); 8333 btstack_memory_hci_connection_free(con); 8334 } 8335 } 8336 void hci_simulate_working_fuzz(void){ 8337 hci_stack->le_scanning_param_update = false; 8338 hci_init_done(); 8339 hci_stack->num_cmd_packets = 255; 8340 } 8341 #endif 8342