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