1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 78 #ifndef HCI_HOST_ACL_PACKET_NUM 79 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 80 #endif 81 #ifndef HCI_HOST_ACL_PACKET_LEN 82 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 83 #endif 84 #ifndef HCI_HOST_SCO_PACKET_NUM 85 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 86 #endif 87 #ifndef HCI_HOST_SCO_PACKET_LEN 88 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 89 #endif 90 #endif 91 92 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 93 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 94 #endif 95 96 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 97 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 98 #endif 99 100 #define HCI_CONNECTION_TIMEOUT_MS 10000 101 102 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 103 #define HCI_RESET_RESEND_TIMEOUT_MS 200 104 #endif 105 106 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 107 #ifndef GAP_INQUIRY_MAX_NAME_LEN 108 #define GAP_INQUIRY_MAX_NAME_LEN 32 109 #endif 110 111 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 112 #define GAP_INQUIRY_DURATION_MIN 0x01 113 #define GAP_INQUIRY_DURATION_MAX 0x30 114 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 115 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 116 #define GAP_INQUIRY_STATE_IDLE 0x00 117 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 118 #define GAP_INQUIRY_STATE_ACTIVE 0x81 119 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 120 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 121 #define GAP_INQUIRY_STATE_PERIODIC 0x84 122 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 123 #define GAP_INQUIRY_STATE_W4_EXIT_PERIODIC_COMPLETE 0x86 124 125 // GAP Remote Name Request 126 #define GAP_REMOTE_NAME_STATE_IDLE 0 127 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 128 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 129 130 // GAP Pairing 131 #define GAP_PAIRING_STATE_IDLE 0 132 #define GAP_PAIRING_STATE_SEND_PIN 1 133 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 134 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 135 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 136 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 137 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 138 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 139 140 // 141 // compact storage of relevant supported HCI Commands. 142 // X-Macro below provides enumeration and mapping table into the supported 143 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 144 // 145 146 // format: command name, byte offset, bit nr in 64-byte supported commands 147 // currently stored in 32-bit variable 148 #define SUPPORTED_HCI_COMMANDS \ 149 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 150 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 151 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 152 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 153 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 154 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 155 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 156 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 157 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 158 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 159 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 160 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 161 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 162 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 163 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 164 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 165 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 166 167 // enumerate supported commands 168 #define X(name, offset, bit) name, 169 enum { 170 SUPPORTED_HCI_COMMANDS 171 SUPPORTED_HCI_COMMANDS_COUNT 172 }; 173 #undef X 174 175 // prototypes 176 #ifdef ENABLE_CLASSIC 177 static void hci_update_scan_enable(void); 178 static void hci_emit_discoverable_enabled(uint8_t enabled); 179 static int hci_local_ssp_activated(void); 180 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 181 static bool hci_ssp_supported(hci_connection_t * connection); 182 static void hci_notify_if_sco_can_send_now(void); 183 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 184 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 185 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 186 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 187 static void hci_connection_timestamp(hci_connection_t *connection); 188 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 189 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 190 #endif 191 192 static int hci_power_control_on(void); 193 static void hci_power_control_off(void); 194 static void hci_state_reset(void); 195 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 196 static void hci_emit_transport_packet_sent(void); 197 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 198 static void hci_emit_nr_connections_changed(void); 199 static void hci_emit_hci_open_failed(void); 200 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 201 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 202 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 203 static void hci_run(void); 204 static int hci_is_le_connection(hci_connection_t * connection); 205 206 #ifdef ENABLE_CLASSIC 207 static int hci_have_usb_transport(void); 208 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 209 #endif 210 211 #ifdef ENABLE_BLE 212 static void hci_whitelist_free(void); 213 #ifdef ENABLE_LE_CENTRAL 214 // called from test/ble_client/advertising_data_parser.c 215 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 216 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 217 static hci_connection_t * gap_get_outgoing_connection(void); 218 static void hci_le_scan_stop(void); 219 static bool hci_run_general_gap_le(void); 220 #endif 221 #ifdef ENABLE_LE_PERIPHERAL 222 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 223 static void hci_periodic_advertiser_list_free(void); 224 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 225 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 226 #endif /* ENABLE_LE_PERIPHERAL */ 227 #endif /* ENABLE_BLE */ 228 229 // the STACK is here 230 #ifndef HAVE_MALLOC 231 static hci_stack_t hci_stack_static; 232 #endif 233 static hci_stack_t * hci_stack = NULL; 234 235 #ifdef ENABLE_CLASSIC 236 // default name 237 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 238 239 // test helper 240 static uint8_t disable_l2cap_timeouts = 0; 241 #endif 242 243 // reset connection state on create and on reconnect 244 // don't overwrite addr, con handle, role 245 static void hci_connection_init(hci_connection_t * conn){ 246 conn->authentication_flags = AUTH_FLAG_NONE; 247 conn->bonding_flags = 0; 248 conn->requested_security_level = LEVEL_0; 249 #ifdef ENABLE_CLASSIC 250 conn->request_role = HCI_ROLE_INVALID; 251 conn->sniff_subrating_max_latency = 0xffff; 252 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 253 conn->link_key_type = INVALID_LINK_KEY; 254 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 255 btstack_run_loop_set_timer_context(&conn->timeout, conn); 256 hci_connection_timestamp(conn); 257 #endif 258 conn->acl_recombination_length = 0; 259 conn->acl_recombination_pos = 0; 260 conn->num_packets_sent = 0; 261 262 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 263 #ifdef ENABLE_BLE 264 conn->le_phy_update_all_phys = 0xff; 265 #endif 266 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 267 conn->le_max_tx_octets = 27; 268 #endif 269 #ifdef ENABLE_CLASSIC_PAIRING_OOB 270 conn->classic_oob_c_192 = NULL; 271 conn->classic_oob_r_192 = NULL; 272 conn->classic_oob_c_256 = NULL; 273 conn->classic_oob_r_256 = NULL; 274 #endif 275 } 276 277 /** 278 * create connection for given address 279 * 280 * @return connection OR NULL, if no memory left 281 */ 282 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 283 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 284 285 hci_connection_t * conn = btstack_memory_hci_connection_get(); 286 if (!conn) return NULL; 287 hci_connection_init(conn); 288 289 bd_addr_copy(conn->address, addr); 290 conn->address_type = addr_type; 291 conn->con_handle = HCI_CON_HANDLE_INVALID; 292 conn->role = HCI_ROLE_INVALID; 293 294 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 295 296 return conn; 297 } 298 299 300 /** 301 * get le connection parameter range 302 * 303 * @return le connection parameter range struct 304 */ 305 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 306 *range = hci_stack->le_connection_parameter_range; 307 } 308 309 /** 310 * set le connection parameter range 311 * 312 */ 313 314 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 315 hci_stack->le_connection_parameter_range = *range; 316 } 317 318 /** 319 * @brief Test if connection parameters are inside in existing rage 320 * @param conn_interval_min (unit: 1.25ms) 321 * @param conn_interval_max (unit: 1.25ms) 322 * @param conn_latency 323 * @param supervision_timeout (unit: 10ms) 324 * @return 1 if included 325 */ 326 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){ 327 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 328 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 329 330 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 331 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 332 333 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 334 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 335 336 return 1; 337 } 338 339 /** 340 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 341 * @note: default: 1 342 * @param max_peripheral_connections 343 */ 344 #ifdef ENABLE_LE_PERIPHERAL 345 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 346 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 347 } 348 #endif 349 350 /** 351 * get hci connections iterator 352 * 353 * @return hci connections iterator 354 */ 355 356 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 357 btstack_linked_list_iterator_init(it, &hci_stack->connections); 358 } 359 360 /** 361 * get connection for a given handle 362 * 363 * @return connection OR NULL, if not found 364 */ 365 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 366 btstack_linked_list_iterator_t it; 367 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 368 while (btstack_linked_list_iterator_has_next(&it)){ 369 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 370 if ( item->con_handle == con_handle ) { 371 return item; 372 } 373 } 374 return NULL; 375 } 376 377 /** 378 * get connection for given address 379 * 380 * @return connection OR NULL, if not found 381 */ 382 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 383 btstack_linked_list_iterator_t it; 384 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 385 while (btstack_linked_list_iterator_has_next(&it)){ 386 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 387 if (connection->address_type != addr_type) continue; 388 if (memcmp(addr, connection->address, 6) != 0) continue; 389 return connection; 390 } 391 return NULL; 392 } 393 394 #ifdef ENABLE_CLASSIC 395 396 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 397 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 398 } 399 400 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 401 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 402 } 403 404 #ifdef ENABLE_SCO_OVER_HCI 405 static int hci_number_sco_connections(void){ 406 int connections = 0; 407 btstack_linked_list_iterator_t it; 408 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 409 while (btstack_linked_list_iterator_has_next(&it)){ 410 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 411 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 412 connections++; 413 } 414 return connections; 415 } 416 #endif 417 418 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 419 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 420 #ifdef HAVE_EMBEDDED_TICK 421 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 422 // connections might be timed out 423 hci_emit_l2cap_check_timeout(connection); 424 } 425 #else 426 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 427 // connections might be timed out 428 hci_emit_l2cap_check_timeout(connection); 429 } 430 #endif 431 } 432 433 static void hci_connection_timestamp(hci_connection_t *connection){ 434 #ifdef HAVE_EMBEDDED_TICK 435 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 436 #else 437 connection->timestamp = btstack_run_loop_get_time_ms(); 438 #endif 439 } 440 441 /** 442 * add authentication flags and reset timer 443 * @note: assumes classic connection 444 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 445 */ 446 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 447 bd_addr_t addr; 448 reverse_bd_addr(bd_addr, addr); 449 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 450 if (conn) { 451 connectionSetAuthenticationFlags(conn, flags); 452 hci_connection_timestamp(conn); 453 } 454 } 455 456 static bool hci_pairing_active(hci_connection_t * hci_connection){ 457 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 458 } 459 460 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 461 if (hci_pairing_active(hci_connection)) return; 462 if (ssp){ 463 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 464 } else { 465 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 466 } 467 // if we are initiator, we have sent an HCI Authenticate Request 468 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 469 470 // if we are responder, use minimal service security level as required level 471 if (!initiator){ 472 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); 473 } 474 475 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 476 477 uint8_t event[12]; 478 event[0] = GAP_EVENT_PAIRING_STARTED; 479 event[1] = 10; 480 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 481 reverse_bd_addr(hci_connection->address, &event[4]); 482 event[10] = (uint8_t) ssp; 483 event[11] = (uint8_t) initiator; 484 hci_emit_event(event, sizeof(event), 1); 485 } 486 487 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 488 hci_connection->requested_security_level = LEVEL_0; 489 if (!hci_pairing_active(hci_connection)) return; 490 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 491 #ifdef ENABLE_CLASSIC_PAIRING_OOB 492 hci_connection->classic_oob_c_192 = NULL; 493 hci_connection->classic_oob_r_192 = NULL; 494 hci_connection->classic_oob_c_256 = NULL; 495 hci_connection->classic_oob_r_256 = NULL; 496 #endif 497 log_info("pairing complete, status %02x", status); 498 499 uint8_t event[11]; 500 event[0] = GAP_EVENT_PAIRING_COMPLETE; 501 event[1] = 9; 502 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 503 reverse_bd_addr(hci_connection->address, &event[4]); 504 event[10] = status; 505 hci_emit_event(event, sizeof(event), 1); 506 507 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 508 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 509 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 510 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 511 hci_connection->bonding_status = status; 512 } 513 } 514 515 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 516 hci_connection_t * conn = hci_connection_for_handle(handle); 517 if (!conn) return false; 518 return hci_pairing_active(conn); 519 } 520 521 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 522 if (!hci_stack->link_key_db) return; 523 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 524 hci_stack->link_key_db->delete_link_key(addr); 525 } 526 527 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 528 if (!hci_stack->link_key_db) return; 529 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 530 hci_stack->link_key_db->put_link_key(addr, link_key, type); 531 } 532 533 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 534 if (!hci_stack->link_key_db) return false; 535 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 536 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 537 return result; 538 } 539 540 void gap_delete_all_link_keys(void){ 541 bd_addr_t addr; 542 link_key_t link_key; 543 link_key_type_t type; 544 btstack_link_key_iterator_t it; 545 int ok = gap_link_key_iterator_init(&it); 546 if (!ok) { 547 log_error("could not initialize iterator"); 548 return; 549 } 550 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 551 gap_drop_link_key_for_bd_addr(addr); 552 } 553 gap_link_key_iterator_done(&it); 554 } 555 556 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 557 if (!hci_stack->link_key_db) return 0; 558 if (!hci_stack->link_key_db->iterator_init) return 0; 559 return hci_stack->link_key_db->iterator_init(it); 560 } 561 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){ 562 if (!hci_stack->link_key_db) return 0; 563 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 564 } 565 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 566 if (!hci_stack->link_key_db) return; 567 hci_stack->link_key_db->iterator_done(it); 568 } 569 #endif 570 571 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 572 switch (address_type){ 573 case BD_ADDR_TYPE_LE_PUBLIC: 574 case BD_ADDR_TYPE_LE_RANDOM: 575 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 576 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 577 return true; 578 default: 579 return false; 580 } 581 } 582 583 static int hci_is_le_connection(hci_connection_t * connection){ 584 return hci_is_le_connection_type(connection->address_type); 585 } 586 587 /** 588 * count connections 589 */ 590 static int nr_hci_connections(void){ 591 int count = 0; 592 btstack_linked_item_t *it; 593 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 594 count++; 595 } 596 return count; 597 } 598 599 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 600 601 unsigned int num_packets_sent_classic = 0; 602 unsigned int num_packets_sent_le = 0; 603 604 btstack_linked_item_t *it; 605 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 606 hci_connection_t * connection = (hci_connection_t *) it; 607 if (hci_is_le_connection(connection)){ 608 num_packets_sent_le += connection->num_packets_sent; 609 } 610 if (connection->address_type == BD_ADDR_TYPE_ACL){ 611 num_packets_sent_classic += connection->num_packets_sent; 612 } 613 } 614 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 615 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 616 int free_slots_le = 0; 617 618 if (free_slots_classic < 0){ 619 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); 620 return 0; 621 } 622 623 if (hci_stack->le_acl_packets_total_num){ 624 // if we have LE slots, they are used 625 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 626 if (free_slots_le < 0){ 627 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); 628 return 0; 629 } 630 } else { 631 // otherwise, classic slots are used for LE, too 632 free_slots_classic -= num_packets_sent_le; 633 if (free_slots_classic < 0){ 634 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); 635 return 0; 636 } 637 } 638 639 switch (address_type){ 640 case BD_ADDR_TYPE_UNKNOWN: 641 log_error("hci_number_free_acl_slots: unknown address type"); 642 return 0; 643 644 case BD_ADDR_TYPE_ACL: 645 return (uint16_t) free_slots_classic; 646 647 default: 648 if (hci_stack->le_acl_packets_total_num > 0){ 649 return (uint16_t) free_slots_le; 650 } 651 return (uint16_t) free_slots_classic; 652 } 653 } 654 655 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 656 // get connection type 657 hci_connection_t * connection = hci_connection_for_handle(con_handle); 658 if (!connection){ 659 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 660 return 0; 661 } 662 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 663 } 664 665 #ifdef ENABLE_CLASSIC 666 static int hci_number_free_sco_slots(void){ 667 unsigned int num_sco_packets_sent = 0; 668 btstack_linked_item_t *it; 669 if (hci_stack->synchronous_flow_control_enabled){ 670 // explicit flow control 671 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 672 hci_connection_t * connection = (hci_connection_t *) it; 673 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 674 num_sco_packets_sent += connection->num_packets_sent; 675 } 676 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 677 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 678 return 0; 679 } 680 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 681 } else { 682 // implicit flow control -- TODO 683 int num_ready = 0; 684 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 685 hci_connection_t * connection = (hci_connection_t *) it; 686 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 687 if (connection->sco_tx_ready == 0) continue; 688 num_ready++; 689 } 690 return num_ready; 691 } 692 } 693 #endif 694 695 // only used to send HCI Host Number Completed Packets 696 static int hci_can_send_comand_packet_transport(void){ 697 if (hci_stack->hci_packet_buffer_reserved) return 0; 698 699 // check for async hci transport implementations 700 if (hci_stack->hci_transport->can_send_packet_now){ 701 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 702 return 0; 703 } 704 } 705 return 1; 706 } 707 708 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 709 bool hci_can_send_command_packet_now(void){ 710 if (hci_can_send_comand_packet_transport() == 0) return false; 711 return hci_stack->num_cmd_packets > 0u; 712 } 713 714 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 715 // check for async hci transport implementations 716 if (!hci_stack->hci_transport->can_send_packet_now) return true; 717 return hci_stack->hci_transport->can_send_packet_now(packet_type); 718 } 719 720 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 721 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 722 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 723 } 724 725 bool hci_can_send_acl_le_packet_now(void){ 726 if (hci_stack->hci_packet_buffer_reserved) return false; 727 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 728 } 729 730 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 731 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 732 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 733 } 734 735 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 736 if (hci_stack->hci_packet_buffer_reserved) return false; 737 return hci_can_send_prepared_acl_packet_now(con_handle); 738 } 739 740 #ifdef ENABLE_CLASSIC 741 bool hci_can_send_acl_classic_packet_now(void){ 742 if (hci_stack->hci_packet_buffer_reserved) return false; 743 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 744 } 745 746 bool hci_can_send_prepared_sco_packet_now(void){ 747 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 748 if (hci_have_usb_transport()){ 749 return hci_stack->sco_can_send_now; 750 } else { 751 return hci_number_free_sco_slots() > 0; 752 } 753 } 754 755 bool hci_can_send_sco_packet_now(void){ 756 if (hci_stack->hci_packet_buffer_reserved) return false; 757 return hci_can_send_prepared_sco_packet_now(); 758 } 759 760 void hci_request_sco_can_send_now_event(void){ 761 hci_stack->sco_waiting_for_can_send_now = 1; 762 hci_notify_if_sco_can_send_now(); 763 } 764 #endif 765 766 // used for internal checks in l2cap.c 767 bool hci_is_packet_buffer_reserved(void){ 768 return hci_stack->hci_packet_buffer_reserved; 769 } 770 771 // reserves outgoing packet buffer. 772 // @return 1 if successful 773 bool hci_reserve_packet_buffer(void){ 774 if (hci_stack->hci_packet_buffer_reserved) { 775 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 776 return false; 777 } 778 hci_stack->hci_packet_buffer_reserved = true; 779 return true; 780 } 781 782 void hci_release_packet_buffer(void){ 783 hci_stack->hci_packet_buffer_reserved = false; 784 } 785 786 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 787 static int hci_transport_synchronous(void){ 788 return hci_stack->hci_transport->can_send_packet_now == NULL; 789 } 790 791 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 792 793 // 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); 794 795 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 796 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 797 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 798 max_acl_data_packet_length = hci_stack->le_data_packets_length; 799 } 800 801 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 802 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 803 max_acl_data_packet_length = connection->le_max_tx_octets; 804 } 805 #endif 806 807 log_debug("hci_send_acl_packet_fragments entered"); 808 809 uint8_t status = ERROR_CODE_SUCCESS; 810 // multiple packets could be send on a synchronous HCI transport 811 while (true){ 812 813 log_debug("hci_send_acl_packet_fragments loop entered"); 814 815 // get current data 816 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 817 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 818 bool more_fragments = false; 819 820 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 821 if (current_acl_data_packet_length > max_acl_data_packet_length){ 822 more_fragments = true; 823 current_acl_data_packet_length = max_acl_data_packet_length; 824 } 825 826 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 827 if (acl_header_pos > 0u){ 828 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 829 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 830 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 831 } 832 833 // update header len 834 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 835 836 // count packet 837 connection->num_packets_sent++; 838 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 839 840 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 841 if (more_fragments){ 842 // update start of next fragment to send 843 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 844 } else { 845 // done 846 hci_stack->acl_fragmentation_pos = 0; 847 hci_stack->acl_fragmentation_total_size = 0; 848 } 849 850 // send packet 851 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 852 const int size = current_acl_data_packet_length + 4; 853 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 854 hci_stack->acl_fragmentation_tx_active = 1; 855 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 856 if (err != 0){ 857 // no error from HCI Transport expected 858 status = ERROR_CODE_HARDWARE_FAILURE; 859 } 860 861 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 862 863 // done yet? 864 if (!more_fragments) break; 865 866 // can send more? 867 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 868 } 869 870 log_debug("hci_send_acl_packet_fragments loop over"); 871 872 // release buffer now for synchronous transport 873 if (hci_transport_synchronous()){ 874 hci_stack->acl_fragmentation_tx_active = 0; 875 hci_release_packet_buffer(); 876 hci_emit_transport_packet_sent(); 877 } 878 879 return status; 880 } 881 882 // pre: caller has reserved the packet buffer 883 uint8_t hci_send_acl_packet_buffer(int size){ 884 btstack_assert(hci_stack->hci_packet_buffer_reserved); 885 886 uint8_t * packet = hci_stack->hci_packet_buffer; 887 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 888 889 // check for free places on Bluetooth module 890 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 891 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 892 hci_release_packet_buffer(); 893 hci_emit_transport_packet_sent(); 894 return BTSTACK_ACL_BUFFERS_FULL; 895 } 896 897 hci_connection_t *connection = hci_connection_for_handle( con_handle); 898 if (!connection) { 899 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 900 hci_release_packet_buffer(); 901 hci_emit_transport_packet_sent(); 902 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 903 } 904 905 #ifdef ENABLE_CLASSIC 906 hci_connection_timestamp(connection); 907 #endif 908 909 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 910 911 // setup data 912 hci_stack->acl_fragmentation_total_size = size; 913 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 914 915 return hci_send_acl_packet_fragments(connection); 916 } 917 918 #ifdef ENABLE_CLASSIC 919 // pre: caller has reserved the packet buffer 920 uint8_t hci_send_sco_packet_buffer(int size){ 921 btstack_assert(hci_stack->hci_packet_buffer_reserved); 922 923 uint8_t * packet = hci_stack->hci_packet_buffer; 924 925 // skip checks in loopback mode 926 if (!hci_stack->loopback_mode){ 927 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 928 929 // check for free places on Bluetooth module 930 if (!hci_can_send_prepared_sco_packet_now()) { 931 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 932 hci_release_packet_buffer(); 933 hci_emit_transport_packet_sent(); 934 return BTSTACK_ACL_BUFFERS_FULL; 935 } 936 937 // track send packet in connection struct 938 hci_connection_t *connection = hci_connection_for_handle( con_handle); 939 if (!connection) { 940 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 941 hci_release_packet_buffer(); 942 hci_emit_transport_packet_sent(); 943 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 944 } 945 946 if (hci_have_usb_transport()){ 947 // token used 948 hci_stack->sco_can_send_now = false; 949 } else { 950 if (hci_stack->synchronous_flow_control_enabled){ 951 connection->num_packets_sent++; 952 } else { 953 connection->sco_tx_ready--; 954 } 955 } 956 } 957 958 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 959 960 #ifdef HAVE_SCO_TRANSPORT 961 hci_stack->sco_transport->send_packet(packet, size); 962 hci_release_packet_buffer(); 963 hci_emit_transport_packet_sent(); 964 965 return 0; 966 #else 967 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 968 if (hci_transport_synchronous()){ 969 hci_release_packet_buffer(); 970 hci_emit_transport_packet_sent(); 971 } 972 973 if (err != 0){ 974 return ERROR_CODE_HARDWARE_FAILURE; 975 } 976 return ERROR_CODE_SUCCESS; 977 #endif 978 } 979 #endif 980 981 #ifdef ENABLE_BLE 982 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 983 btstack_assert(hci_stack->hci_packet_buffer_reserved); 984 985 uint8_t * packet = hci_stack->hci_packet_buffer; 986 // TODO: check for space on controller 987 // TODO: track outgoing packet sent 988 hci_dump_packet( HCI_ISO_DATA_PACKET, 0, packet, size); 989 990 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 991 return (err == 0) ? ERROR_CODE_SUCCESS : ERROR_CODE_HARDWARE_FAILURE; 992 } 993 #endif 994 995 static void acl_handler(uint8_t *packet, uint16_t size){ 996 997 // get info 998 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 999 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1000 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1001 uint16_t acl_length = READ_ACL_LENGTH(packet); 1002 1003 // ignore non-registered handle 1004 if (!conn){ 1005 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1006 return; 1007 } 1008 1009 // assert packet is complete 1010 if ((acl_length + 4u) != size){ 1011 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1012 return; 1013 } 1014 1015 #ifdef ENABLE_CLASSIC 1016 // update idle timestamp 1017 hci_connection_timestamp(conn); 1018 #endif 1019 1020 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1021 hci_stack->host_completed_packets = 1; 1022 conn->num_packets_completed++; 1023 #endif 1024 1025 // handle different packet types 1026 switch (acl_flags & 0x03u) { 1027 1028 case 0x01: // continuation fragment 1029 1030 // sanity checks 1031 if (conn->acl_recombination_pos == 0u) { 1032 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1033 return; 1034 } 1035 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1036 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1037 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1038 conn->acl_recombination_pos = 0; 1039 return; 1040 } 1041 1042 // append fragment payload (header already stored) 1043 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1044 &packet[4], acl_length); 1045 conn->acl_recombination_pos += acl_length; 1046 1047 // forward complete L2CAP packet if complete. 1048 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1049 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1050 // reset recombination buffer 1051 conn->acl_recombination_length = 0; 1052 conn->acl_recombination_pos = 0; 1053 } 1054 break; 1055 1056 case 0x02: { // first fragment 1057 1058 // sanity check 1059 if (conn->acl_recombination_pos) { 1060 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 1061 conn->acl_recombination_pos = 0; 1062 } 1063 1064 // peek into L2CAP packet! 1065 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1066 1067 // compare fragment size to L2CAP packet size 1068 if (acl_length >= (l2cap_length + 4u)){ 1069 // forward fragment as L2CAP packet 1070 hci_emit_acl_packet(packet, acl_length + 4u); 1071 } else { 1072 1073 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1074 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1075 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1076 return; 1077 } 1078 1079 // store first fragment and tweak acl length for complete package 1080 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1081 packet, acl_length + 4u); 1082 conn->acl_recombination_pos = acl_length + 4u; 1083 conn->acl_recombination_length = l2cap_length; 1084 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1085 } 1086 break; 1087 1088 } 1089 default: 1090 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1091 return; 1092 } 1093 1094 // execute main loop 1095 hci_run(); 1096 } 1097 1098 static void hci_connection_stop_timer(hci_connection_t * conn){ 1099 btstack_run_loop_remove_timer(&conn->timeout); 1100 #ifdef ENABLE_CLASSIC 1101 btstack_run_loop_remove_timer(&conn->timeout_sco); 1102 #endif 1103 } 1104 1105 static void hci_shutdown_connection(hci_connection_t *conn){ 1106 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1107 1108 #ifdef ENABLE_CLASSIC 1109 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1110 bd_addr_type_t addr_type = conn->address_type; 1111 #endif 1112 #ifdef HAVE_SCO_TRANSPORT 1113 hci_con_handle_t con_handle = conn->con_handle; 1114 #endif 1115 #endif 1116 1117 hci_connection_stop_timer(conn); 1118 1119 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1120 btstack_memory_hci_connection_free( conn ); 1121 1122 // now it's gone 1123 hci_emit_nr_connections_changed(); 1124 1125 #ifdef ENABLE_CLASSIC 1126 #ifdef ENABLE_SCO_OVER_HCI 1127 // update SCO 1128 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1129 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1130 } 1131 #endif 1132 #ifdef HAVE_SCO_TRANSPORT 1133 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1134 hci_stack->sco_transport->close(con_handle); 1135 } 1136 #endif 1137 #endif 1138 } 1139 1140 #ifdef ENABLE_CLASSIC 1141 1142 static const uint16_t packet_type_sizes[] = { 1143 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1144 HCI_ACL_DH1_SIZE, 0, 0, 0, 1145 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1146 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1147 }; 1148 static const uint8_t packet_type_feature_requirement_bit[] = { 1149 0, // 3 slot packets 1150 1, // 5 slot packets 1151 25, // EDR 2 mpbs 1152 26, // EDR 3 mbps 1153 39, // 3 slot EDR packts 1154 40, // 5 slot EDR packet 1155 }; 1156 static const uint16_t packet_type_feature_packet_mask[] = { 1157 0x0f00, // 3 slot packets 1158 0xf000, // 5 slot packets 1159 0x1102, // EDR 2 mpbs 1160 0x2204, // EDR 3 mbps 1161 0x0300, // 3 slot EDR packts 1162 0x3000, // 5 slot EDR packet 1163 }; 1164 1165 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1166 // enable packet types based on size 1167 uint16_t packet_types = 0; 1168 unsigned int i; 1169 for (i=0;i<16;i++){ 1170 if (packet_type_sizes[i] == 0) continue; 1171 if (packet_type_sizes[i] <= buffer_size){ 1172 packet_types |= 1 << i; 1173 } 1174 } 1175 // disable packet types due to missing local supported features 1176 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1177 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1178 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1179 if (feature_set) continue; 1180 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1181 packet_types &= ~packet_type_feature_packet_mask[i]; 1182 } 1183 // flip bits for "may not be used" 1184 packet_types ^= 0x3306; 1185 return packet_types; 1186 } 1187 1188 uint16_t hci_usable_acl_packet_types(void){ 1189 return hci_stack->packet_types; 1190 } 1191 #endif 1192 1193 uint8_t* hci_get_outgoing_packet_buffer(void){ 1194 // hci packet buffer is >= acl data packet length 1195 return hci_stack->hci_packet_buffer; 1196 } 1197 1198 uint16_t hci_max_acl_data_packet_length(void){ 1199 return hci_stack->acl_data_packet_length; 1200 } 1201 1202 #ifdef ENABLE_CLASSIC 1203 bool hci_extended_sco_link_supported(void){ 1204 // No. 31, byte 3, bit 7 1205 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1206 } 1207 #endif 1208 1209 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1210 // No. 54, byte 6, bit 6 1211 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1212 } 1213 1214 #ifdef ENABLE_CLASSIC 1215 static int gap_ssp_supported(void){ 1216 // No. 51, byte 6, bit 3 1217 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1218 } 1219 #endif 1220 1221 static int hci_classic_supported(void){ 1222 #ifdef ENABLE_CLASSIC 1223 // No. 37, byte 4, bit 5, = No BR/EDR Support 1224 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1225 #else 1226 return 0; 1227 #endif 1228 } 1229 1230 static int hci_le_supported(void){ 1231 #ifdef ENABLE_BLE 1232 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1233 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1234 #else 1235 return 0; 1236 #endif 1237 } 1238 1239 static bool hci_command_supported(uint8_t command_index){ 1240 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1241 } 1242 1243 #ifdef ENABLE_BLE 1244 1245 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1246 static bool hci_extended_advertising_supported(void){ 1247 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1248 } 1249 #endif 1250 1251 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1252 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1253 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1254 } else { 1255 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1256 } 1257 } 1258 1259 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1260 *addr_type = hci_stack->le_own_addr_type; 1261 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1262 } 1263 1264 #ifdef ENABLE_LE_PERIPHERAL 1265 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1266 *addr_type = hci_stack->le_advertisements_own_addr_type; 1267 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1268 }; 1269 #endif 1270 1271 #ifdef ENABLE_LE_CENTRAL 1272 1273 /** 1274 * @brief Get own addr type and address used for LE connections (Central) 1275 */ 1276 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1277 *addr_type = hci_stack->le_connection_own_addr_type; 1278 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1279 } 1280 1281 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1282 1283 uint16_t offset = 3; 1284 uint8_t num_reports = packet[offset]; 1285 offset += 1; 1286 1287 uint16_t i; 1288 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1289 for (i=0; (i<num_reports) && (offset < size);i++){ 1290 // sanity checks on data_length: 1291 uint8_t data_length = packet[offset + 8]; 1292 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1293 if ((offset + 9u + data_length + 1u) > size) return; 1294 // setup event 1295 uint8_t event_size = 10u + data_length; 1296 uint16_t pos = 0; 1297 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1298 event[pos++] = event_size; 1299 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1300 offset += 8; 1301 pos += 8; 1302 event[pos++] = packet[offset + 1 + data_length]; // rssi 1303 event[pos++] = data_length; 1304 offset++; 1305 (void)memcpy(&event[pos], &packet[offset], data_length); 1306 pos += data_length; 1307 offset += data_length + 1u; // rssi 1308 hci_emit_event(event, pos, 1); 1309 } 1310 } 1311 1312 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1313 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1314 uint16_t offset = 3; 1315 uint8_t num_reports = packet[offset++]; 1316 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1317 uint8_t i; 1318 for (i=0; (i<num_reports) && (offset < size);i++){ 1319 // sanity checks on data_length: 1320 uint16_t data_length = packet[offset + 23]; 1321 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1322 if ((offset + 24u + data_length) > size) return; 1323 uint16_t event_type = little_endian_read_16(packet, offset); 1324 offset += 2; 1325 if ((event_type & 0x10) != 0) { 1326 // setup legacy event 1327 uint8_t legacy_event_type; 1328 switch (event_type){ 1329 case 0b0010011: 1330 // ADV_IND 1331 legacy_event_type = 0; 1332 break; 1333 case 0b0010101: 1334 // ADV_DIRECT_IND 1335 legacy_event_type = 1; 1336 break; 1337 case 0b0010010: 1338 // ADV_SCAN_IND 1339 legacy_event_type = 2; 1340 break; 1341 case 0b0010000: 1342 // ADV_NONCONN_IND 1343 legacy_event_type = 3; 1344 break; 1345 case 0b0011011: 1346 case 0b0011010: 1347 // SCAN_RSP 1348 legacy_event_type = 4; 1349 break; 1350 default: 1351 legacy_event_type = 0; 1352 break; 1353 } 1354 uint16_t pos = 0; 1355 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1356 event[pos++] = 10u + data_length; 1357 event[pos++] = legacy_event_type; 1358 // copy address type + address 1359 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1360 offset += 7; 1361 pos += 7; 1362 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1363 offset += 4; 1364 // copy rssi 1365 event[pos++] = packet[offset++]; 1366 // skip periodic advertising interval and direct address 1367 offset += 9; 1368 // copy data len + data; 1369 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1370 pos += 1 +data_length; 1371 offset += 1+ data_length; 1372 hci_emit_event(event, pos, 1); 1373 } else { 1374 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1375 uint8_t report_len = 24 + data_length; 1376 event[1] = report_len; 1377 little_endian_store_16(event, 2, event_type); 1378 memcpy(&event[4], &packet[offset], report_len); 1379 offset += report_len; 1380 hci_emit_event(event, 2 + report_len, 1); 1381 } 1382 } 1383 } 1384 #endif 1385 1386 #endif 1387 #endif 1388 1389 #ifdef ENABLE_BLE 1390 #ifdef ENABLE_LE_PERIPHERAL 1391 static void hci_update_advertisements_enabled_for_current_roles(void){ 1392 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1393 // get number of active le slave connections 1394 int num_slave_connections = 0; 1395 btstack_linked_list_iterator_t it; 1396 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1397 while (btstack_linked_list_iterator_has_next(&it)){ 1398 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1399 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1400 if (con->state != OPEN) continue; 1401 if (con->role != HCI_ROLE_SLAVE) continue; 1402 if (!hci_is_le_connection(con)) continue; 1403 num_slave_connections++; 1404 } 1405 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1406 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1407 } else { 1408 hci_stack->le_advertisements_enabled_for_current_roles = false; 1409 } 1410 } 1411 #endif 1412 #endif 1413 1414 #ifdef ENABLE_CLASSIC 1415 static void gap_run_set_local_name(void){ 1416 hci_reserve_packet_buffer(); 1417 uint8_t * packet = hci_stack->hci_packet_buffer; 1418 // construct HCI Command and send 1419 uint16_t opcode = hci_write_local_name.opcode; 1420 hci_stack->last_cmd_opcode = opcode; 1421 packet[0] = opcode & 0xff; 1422 packet[1] = opcode >> 8; 1423 packet[2] = DEVICE_NAME_LEN; 1424 memset(&packet[3], 0, DEVICE_NAME_LEN); 1425 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1426 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1427 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1428 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1429 // expand '00:00:00:00:00:00' in name with bd_addr 1430 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1431 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1432 } 1433 1434 static void gap_run_set_eir_data(void){ 1435 hci_reserve_packet_buffer(); 1436 uint8_t * packet = hci_stack->hci_packet_buffer; 1437 // construct HCI Command in-place and send 1438 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1439 hci_stack->last_cmd_opcode = opcode; 1440 uint16_t offset = 0; 1441 packet[offset++] = opcode & 0xff; 1442 packet[offset++] = opcode >> 8; 1443 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1444 packet[offset++] = 0; // FEC not required 1445 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1446 if (hci_stack->eir_data){ 1447 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1448 ad_context_t context; 1449 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1450 uint8_t data_type = ad_iterator_get_data_type(&context); 1451 uint8_t size = ad_iterator_get_data_len(&context); 1452 const uint8_t *data = ad_iterator_get_data(&context); 1453 // copy item 1454 packet[offset++] = size + 1; 1455 packet[offset++] = data_type; 1456 memcpy(&packet[offset], data, size); 1457 // update name item 1458 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1459 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1460 } 1461 offset += size; 1462 } 1463 } else { 1464 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1465 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1466 packet[offset++] = bytes_to_copy + 1; 1467 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1468 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1469 // expand '00:00:00:00:00:00' in name with bd_addr 1470 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1471 } 1472 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1473 } 1474 1475 static void hci_run_gap_tasks_classic(void){ 1476 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1477 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1478 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1479 return; 1480 } 1481 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1482 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1483 gap_run_set_local_name(); 1484 return; 1485 } 1486 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1487 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1488 gap_run_set_eir_data(); 1489 return; 1490 } 1491 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1492 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1493 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1494 return; 1495 } 1496 // write page scan activity 1497 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1498 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1499 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1500 return; 1501 } 1502 // write page scan type 1503 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1504 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1505 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1506 return; 1507 } 1508 // write page timeout 1509 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1510 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1511 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1512 return; 1513 } 1514 // send scan enable 1515 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1516 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1517 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1518 return; 1519 } 1520 // send write scan activity 1521 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1522 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1523 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1524 return; 1525 } 1526 } 1527 #endif 1528 1529 #ifndef HAVE_HOST_CONTROLLER_API 1530 1531 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1532 if (!hci_stack->config) return 0; 1533 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1534 // Limit baud rate for Broadcom chipsets to 3 mbps 1535 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1536 baud_rate = 3000000; 1537 } 1538 return baud_rate; 1539 } 1540 1541 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1542 UNUSED(ds); 1543 1544 switch (hci_stack->substate){ 1545 case HCI_INIT_W4_SEND_RESET: 1546 log_info("Resend HCI Reset"); 1547 hci_stack->substate = HCI_INIT_SEND_RESET; 1548 hci_stack->num_cmd_packets = 1; 1549 hci_run(); 1550 break; 1551 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1552 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1553 if (hci_stack->hci_transport->reset_link){ 1554 hci_stack->hci_transport->reset_link(); 1555 } 1556 1557 /* fall through */ 1558 1559 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1560 log_info("Resend HCI Reset - CSR Warm Boot"); 1561 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1562 hci_stack->num_cmd_packets = 1; 1563 hci_run(); 1564 break; 1565 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1566 if (hci_stack->hci_transport->set_baudrate){ 1567 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1568 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1569 hci_stack->hci_transport->set_baudrate(baud_rate); 1570 } 1571 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1572 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1573 if (hci_stack->hci_transport->reset_link){ 1574 log_info("Link Reset"); 1575 hci_stack->hci_transport->reset_link(); 1576 } 1577 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1578 hci_run(); 1579 } 1580 break; 1581 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1582 // otherwise continue 1583 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1584 hci_send_cmd(&hci_read_local_supported_commands); 1585 break; 1586 default: 1587 break; 1588 } 1589 } 1590 #endif 1591 1592 static void hci_initializing_next_state(void){ 1593 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1594 } 1595 1596 static void hci_init_done(void){ 1597 // done. tell the app 1598 log_info("hci_init_done -> HCI_STATE_WORKING"); 1599 hci_stack->state = HCI_STATE_WORKING; 1600 hci_emit_state(); 1601 } 1602 1603 // assumption: hci_can_send_command_packet_now() == true 1604 static void hci_initializing_run(void){ 1605 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1606 1607 if (!hci_can_send_command_packet_now()) return; 1608 1609 #ifndef HAVE_HOST_CONTROLLER_API 1610 bool need_baud_change = hci_stack->config 1611 && hci_stack->chipset 1612 && hci_stack->chipset->set_baudrate_command 1613 && hci_stack->hci_transport->set_baudrate 1614 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1615 #endif 1616 1617 switch (hci_stack->substate){ 1618 case HCI_INIT_SEND_RESET: 1619 hci_state_reset(); 1620 1621 #ifndef HAVE_HOST_CONTROLLER_API 1622 // prepare reset if command complete not received in 100ms 1623 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1624 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1625 btstack_run_loop_add_timer(&hci_stack->timeout); 1626 #endif 1627 // send command 1628 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1629 hci_send_cmd(&hci_reset); 1630 break; 1631 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1632 hci_send_cmd(&hci_read_local_version_information); 1633 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1634 break; 1635 1636 #ifndef HAVE_HOST_CONTROLLER_API 1637 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1638 hci_state_reset(); 1639 // prepare reset if command complete not received in 100ms 1640 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1641 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1642 btstack_run_loop_add_timer(&hci_stack->timeout); 1643 // send command 1644 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1645 hci_send_cmd(&hci_reset); 1646 break; 1647 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1648 hci_state_reset(); 1649 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1650 hci_send_cmd(&hci_reset); 1651 break; 1652 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1653 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1654 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1655 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1656 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1657 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1658 break; 1659 } 1660 case HCI_INIT_SET_BD_ADDR: 1661 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1662 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1663 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1664 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1665 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1666 break; 1667 case HCI_INIT_SEND_READ_LOCAL_NAME: 1668 #ifdef ENABLE_CLASSIC 1669 hci_send_cmd(&hci_read_local_name); 1670 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1671 break; 1672 #endif 1673 /* fall through */ 1674 1675 case HCI_INIT_SEND_BAUD_CHANGE: 1676 if (need_baud_change) { 1677 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1678 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1679 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1680 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1681 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1682 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1683 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1684 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1685 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1686 btstack_run_loop_add_timer(&hci_stack->timeout); 1687 } 1688 break; 1689 } 1690 1691 /* fall through */ 1692 1693 case HCI_INIT_CUSTOM_INIT: 1694 // Custom initialization 1695 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1696 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1697 bool send_cmd = false; 1698 switch (hci_stack->chipset_result){ 1699 case BTSTACK_CHIPSET_VALID_COMMAND: 1700 send_cmd = true; 1701 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1702 break; 1703 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1704 send_cmd = true; 1705 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1706 log_info("CSR Warm Boot"); 1707 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1708 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1709 btstack_run_loop_add_timer(&hci_stack->timeout); 1710 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1711 && hci_stack->config 1712 && hci_stack->chipset 1713 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1714 && hci_stack->hci_transport->set_baudrate 1715 && hci_transport_uart_get_main_baud_rate()){ 1716 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1717 } else { 1718 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1719 } 1720 break; 1721 default: 1722 break; 1723 } 1724 1725 if (send_cmd){ 1726 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1727 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1728 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1729 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1730 break; 1731 } 1732 log_info("Init script done"); 1733 1734 // Init script download on Broadcom chipsets causes: 1735 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1736 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1737 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1738 1739 // - baud rate to reset, restore UART baud rate if needed 1740 if (need_baud_change) { 1741 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1742 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1743 hci_stack->hci_transport->set_baudrate(baud_rate); 1744 } 1745 1746 uint16_t bcm_delay_ms = 300; 1747 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1748 // -> Work around: wait here. 1749 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1750 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1751 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1752 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1753 btstack_run_loop_add_timer(&hci_stack->timeout); 1754 break; 1755 } 1756 } 1757 #endif 1758 /* fall through */ 1759 1760 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1761 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1762 hci_send_cmd(&hci_read_local_supported_commands); 1763 break; 1764 case HCI_INIT_READ_BD_ADDR: 1765 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1766 hci_send_cmd(&hci_read_bd_addr); 1767 break; 1768 case HCI_INIT_READ_BUFFER_SIZE: 1769 // only read buffer size if supported 1770 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1771 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1772 hci_send_cmd(&hci_read_buffer_size); 1773 break; 1774 } 1775 1776 /* fall through */ 1777 1778 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1779 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1780 hci_send_cmd(&hci_read_local_supported_features); 1781 break; 1782 1783 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1784 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1785 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1786 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1787 break; 1788 case HCI_INIT_HOST_BUFFER_SIZE: 1789 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1790 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1791 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1792 break; 1793 #endif 1794 1795 case HCI_INIT_SET_EVENT_MASK: 1796 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1797 if (hci_le_supported()){ 1798 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1799 } else { 1800 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1801 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1802 } 1803 break; 1804 1805 case HCI_INIT_SET_EVENT_MASK_2: 1806 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2)){ 1807 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1808 // Encryption Change Event v2 - bit 25 1809 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1810 break; 1811 } 1812 1813 #ifdef ENABLE_CLASSIC 1814 /* fall through */ 1815 1816 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1817 if (hci_classic_supported() && gap_ssp_supported()){ 1818 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1819 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1820 break; 1821 } 1822 1823 /* fall through */ 1824 1825 case HCI_INIT_WRITE_INQUIRY_MODE: 1826 if (hci_classic_supported()){ 1827 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1828 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1829 break; 1830 } 1831 1832 /* fall through */ 1833 1834 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1835 // skip write secure connections host support if not supported or disabled 1836 if (hci_classic_supported() && hci_stack->secure_connections_enable 1837 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 1838 hci_stack->secure_connections_active = true; 1839 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1840 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 1841 break; 1842 } 1843 1844 /* fall through */ 1845 1846 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 1847 // skip set min encryption key size 1848 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 1849 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 1850 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 1851 break; 1852 } 1853 1854 #ifdef ENABLE_SCO_OVER_HCI 1855 /* fall through */ 1856 1857 // only sent if ENABLE_SCO_OVER_HCI is defined 1858 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1859 // skip write synchronous flow control if not supported 1860 if (hci_classic_supported() 1861 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 1862 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1863 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 1864 break; 1865 } 1866 /* fall through */ 1867 1868 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1869 // skip write default erroneous data reporting if not supported 1870 if (hci_classic_supported() 1871 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 1872 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1873 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 1874 break; 1875 } 1876 #endif 1877 1878 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 1879 /* fall through */ 1880 1881 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 1882 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 1883 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1884 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1885 #ifdef ENABLE_SCO_OVER_HCI 1886 log_info("BCM: Route SCO data via HCI transport"); 1887 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 1888 #endif 1889 #ifdef ENABLE_SCO_OVER_PCM 1890 log_info("BCM: Route SCO data via PCM interface"); 1891 #ifdef ENABLE_BCM_PCM_WBS 1892 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 1893 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 1894 #else 1895 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1896 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 1897 #endif 1898 #endif 1899 break; 1900 } 1901 #endif 1902 1903 #ifdef ENABLE_SCO_OVER_PCM 1904 /* fall through */ 1905 1906 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 1907 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1908 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 1909 log_info("BCM: Config PCM interface for I2S"); 1910 #ifdef ENABLE_BCM_PCM_WBS 1911 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 1912 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 1913 #else 1914 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1915 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 1916 #endif 1917 break; 1918 } 1919 #endif 1920 #endif 1921 1922 #ifdef ENABLE_BLE 1923 /* fall through */ 1924 1925 // LE INIT 1926 case HCI_INIT_LE_READ_BUFFER_SIZE: 1927 if (hci_le_supported()){ 1928 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 1929 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 1930 hci_send_cmd(&hci_le_read_buffer_size_v2); 1931 } else { 1932 hci_send_cmd(&hci_le_read_buffer_size); 1933 } 1934 break; 1935 } 1936 1937 /* fall through */ 1938 1939 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 1940 // skip write le host if not supported (e.g. on LE only EM9301) 1941 if (hci_le_supported() 1942 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 1943 // LE Supported Host = 1, Simultaneous Host = 0 1944 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 1945 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 1946 break; 1947 } 1948 1949 /* fall through */ 1950 1951 case HCI_INIT_LE_SET_EVENT_MASK: 1952 if (hci_le_supported()){ 1953 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 1954 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 1955 break; 1956 } 1957 #endif 1958 1959 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 1960 /* fall through */ 1961 1962 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 1963 if (hci_le_supported() 1964 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 1965 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 1966 hci_send_cmd(&hci_le_read_maximum_data_length); 1967 break; 1968 } 1969 1970 /* fall through */ 1971 1972 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 1973 if (hci_le_supported() 1974 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 1975 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 1976 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 1977 break; 1978 } 1979 #endif 1980 1981 #ifdef ENABLE_LE_CENTRAL 1982 /* fall through */ 1983 1984 case HCI_INIT_READ_WHITE_LIST_SIZE: 1985 if (hci_le_supported()){ 1986 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 1987 hci_send_cmd(&hci_le_read_white_list_size); 1988 break; 1989 } 1990 1991 #endif 1992 1993 #ifdef ENABLE_LE_PERIPHERAL 1994 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1995 /* fall through */ 1996 1997 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 1998 if (hci_extended_advertising_supported()){ 1999 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2000 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2001 break; 2002 } 2003 #endif 2004 #endif 2005 /* fall through */ 2006 2007 case HCI_INIT_DONE: 2008 hci_stack->substate = HCI_INIT_DONE; 2009 // main init sequence complete 2010 #ifdef ENABLE_CLASSIC 2011 // check if initial Classic GAP Tasks are completed 2012 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2013 hci_run_gap_tasks_classic(); 2014 break; 2015 } 2016 #endif 2017 #ifdef ENABLE_BLE 2018 #ifdef ENABLE_LE_CENTRAL 2019 // check if initial LE GAP Tasks are completed 2020 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2021 hci_run_general_gap_le(); 2022 break; 2023 } 2024 #endif 2025 #endif 2026 hci_init_done(); 2027 break; 2028 2029 default: 2030 return; 2031 } 2032 } 2033 2034 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2035 bool command_completed = false; 2036 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2037 uint16_t opcode = little_endian_read_16(packet,3); 2038 if (opcode == hci_stack->last_cmd_opcode){ 2039 command_completed = true; 2040 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2041 } else { 2042 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2043 } 2044 } 2045 2046 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2047 uint8_t status = packet[2]; 2048 uint16_t opcode = little_endian_read_16(packet,4); 2049 if (opcode == hci_stack->last_cmd_opcode){ 2050 if (status){ 2051 command_completed = true; 2052 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2053 } else { 2054 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2055 } 2056 } else { 2057 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2058 } 2059 } 2060 #ifndef HAVE_HOST_CONTROLLER_API 2061 // Vendor == CSR 2062 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2063 // TODO: track actual command 2064 command_completed = true; 2065 } 2066 2067 // Vendor == Toshiba 2068 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2069 // TODO: track actual command 2070 command_completed = true; 2071 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2072 hci_stack->num_cmd_packets = 1; 2073 } 2074 #endif 2075 2076 return command_completed; 2077 } 2078 2079 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2080 2081 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2082 2083 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2084 2085 #ifndef HAVE_HOST_CONTROLLER_API 2086 2087 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2088 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2089 // 2090 // HCI Reset 2091 // Timeout 100 ms 2092 // HCI Reset 2093 // Command Complete Reset 2094 // HCI Read Local Version Information 2095 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2096 // hang... 2097 // 2098 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2099 if (!command_completed 2100 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2101 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2102 2103 uint16_t opcode = little_endian_read_16(packet,3); 2104 if (opcode == hci_reset.opcode){ 2105 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2106 return; 2107 } 2108 } 2109 2110 // CSR & H5 2111 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2112 if (!command_completed 2113 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2114 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2115 2116 uint16_t opcode = little_endian_read_16(packet,3); 2117 if (opcode == hci_reset.opcode){ 2118 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2119 return; 2120 } 2121 } 2122 2123 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2124 // fix: Correct substate and behave as command below 2125 if (command_completed){ 2126 switch (hci_stack->substate){ 2127 case HCI_INIT_SEND_RESET: 2128 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2129 break; 2130 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2131 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2132 break; 2133 default: 2134 break; 2135 } 2136 } 2137 2138 #endif 2139 2140 if (!command_completed) return; 2141 2142 bool need_baud_change = false; 2143 bool need_addr_change = false; 2144 2145 #ifndef HAVE_HOST_CONTROLLER_API 2146 need_baud_change = hci_stack->config 2147 && hci_stack->chipset 2148 && hci_stack->chipset->set_baudrate_command 2149 && hci_stack->hci_transport->set_baudrate 2150 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2151 2152 need_addr_change = hci_stack->custom_bd_addr_set 2153 && hci_stack->chipset 2154 && hci_stack->chipset->set_bd_addr_command; 2155 #endif 2156 2157 switch(hci_stack->substate){ 2158 2159 #ifndef HAVE_HOST_CONTROLLER_API 2160 case HCI_INIT_SEND_RESET: 2161 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2162 // fix: just correct substate and behave as command below 2163 2164 /* fall through */ 2165 #endif 2166 2167 case HCI_INIT_W4_SEND_RESET: 2168 btstack_run_loop_remove_timer(&hci_stack->timeout); 2169 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2170 return; 2171 2172 #ifndef HAVE_HOST_CONTROLLER_API 2173 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2174 // for STLC2500D, baud rate change already happened. 2175 // for others, baud rate gets changed now 2176 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2177 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2178 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2179 hci_stack->hci_transport->set_baudrate(baud_rate); 2180 } 2181 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2182 return; 2183 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2184 btstack_run_loop_remove_timer(&hci_stack->timeout); 2185 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2186 return; 2187 case HCI_INIT_W4_CUSTOM_INIT: 2188 // repeat custom init 2189 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2190 return; 2191 #endif 2192 2193 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2194 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2195 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2196 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2197 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2198 return; 2199 } 2200 if (need_addr_change){ 2201 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2202 return; 2203 } 2204 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2205 return; 2206 #ifndef HAVE_HOST_CONTROLLER_API 2207 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2208 if (need_baud_change){ 2209 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2210 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2211 hci_stack->hci_transport->set_baudrate(baud_rate); 2212 } 2213 if (need_addr_change){ 2214 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2215 return; 2216 } 2217 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2218 return; 2219 case HCI_INIT_W4_SET_BD_ADDR: 2220 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2221 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2222 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2223 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2224 return; 2225 } 2226 // skipping st warm boot 2227 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2228 return; 2229 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2230 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2231 return; 2232 #endif 2233 2234 case HCI_INIT_DONE: 2235 // set state if we came here by fall through 2236 hci_stack->substate = HCI_INIT_DONE; 2237 return; 2238 2239 default: 2240 break; 2241 } 2242 hci_initializing_next_state(); 2243 } 2244 2245 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2246 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2247 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2248 // check if we have been aware of the HCI connection 2249 switch (conn->state){ 2250 case SENT_CREATE_CONNECTION: 2251 case RECEIVED_CONNECTION_REQUEST: 2252 break; 2253 default: 2254 return; 2255 } 2256 2257 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2258 bd_addr_t bd_address; 2259 (void)memcpy(&bd_address, conn->address, 6); 2260 2261 #ifdef ENABLE_CLASSIC 2262 // cache needed data 2263 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2264 #endif 2265 2266 // connection failed, remove entry 2267 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2268 btstack_memory_hci_connection_free( conn ); 2269 2270 #ifdef ENABLE_CLASSIC 2271 // notify client if dedicated bonding 2272 if (notify_dedicated_bonding_failed){ 2273 log_info("hci notify_dedicated_bonding_failed"); 2274 hci_emit_dedicated_bonding_result(bd_address, status); 2275 } 2276 2277 // if authentication error, also delete link key 2278 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2279 gap_drop_link_key_for_bd_addr(bd_address); 2280 } 2281 #else 2282 UNUSED(status); 2283 #endif 2284 } 2285 2286 #ifdef ENABLE_CLASSIC 2287 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2288 // SSP Controller 2289 if (features[6] & (1 << 3)){ 2290 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2291 } 2292 // eSCO 2293 if (features[3] & (1<<7)){ 2294 conn->remote_supported_features[0] |= 1; 2295 } 2296 // Extended features 2297 if (features[7] & (1<<7)){ 2298 conn->remote_supported_features[0] |= 2; 2299 } 2300 } 2301 2302 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2303 // SSP Host 2304 if (features[0] & (1 << 0)){ 2305 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2306 } 2307 // SC Host 2308 if (features[0] & (1 << 3)){ 2309 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2310 } 2311 } 2312 2313 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2314 // SC Controller 2315 if (features[1] & (1 << 0)){ 2316 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2317 } 2318 } 2319 2320 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2321 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2322 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2323 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2324 if (conn->bonding_flags & BONDING_DEDICATED){ 2325 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2326 } 2327 } 2328 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2329 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2330 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2331 } 2332 2333 #endif 2334 2335 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2336 // handle BT initialization 2337 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2338 hci_initializing_event_handler(packet, size); 2339 } 2340 2341 // help with BT sleep 2342 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2343 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2344 && (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_scan_enable))) { 2345 hci_initializing_next_state(); 2346 } 2347 } 2348 2349 #ifdef ENABLE_CLASSIC 2350 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2351 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2352 conn->encryption_key_size = encryption_key_size; 2353 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2354 2355 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2356 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2357 conn->bonding_flags &= ~BONDING_DEDICATED; 2358 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2359 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2360 return; 2361 } 2362 2363 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2364 conn->requested_security_level = LEVEL_0; 2365 hci_emit_security_level(conn->con_handle, security_level); 2366 return; 2367 } 2368 2369 // Request remote features if not already done 2370 hci_trigger_remote_features_for_connection(conn); 2371 2372 // Request Authentication if not already done 2373 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2374 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2375 } 2376 #endif 2377 2378 static void hci_store_local_supported_commands(const uint8_t * packet){ 2379 // create mapping table 2380 #define X(name, offset, bit) { offset, bit }, 2381 static struct { 2382 uint8_t byte_offset; 2383 uint8_t bit_position; 2384 } supported_hci_commands_map [] = { 2385 SUPPORTED_HCI_COMMANDS 2386 }; 2387 #undef X 2388 2389 // create names for debug purposes 2390 #ifdef ENABLE_LOG_DEBUG 2391 #define X(name, offset, bit) #name, 2392 static const char * command_names[] = { 2393 SUPPORTED_HCI_COMMANDS 2394 }; 2395 #undef X 2396 #endif 2397 2398 hci_stack->local_supported_commands = 0; 2399 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2400 uint16_t i; 2401 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2402 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2403 #ifdef ENABLE_LOG_DEBUG 2404 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); 2405 #else 2406 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2407 #endif 2408 hci_stack->local_supported_commands |= (1LU << i); 2409 } 2410 } 2411 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2412 } 2413 2414 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2415 UNUSED(size); 2416 2417 uint16_t manufacturer; 2418 #ifdef ENABLE_CLASSIC 2419 hci_con_handle_t handle; 2420 hci_connection_t * conn; 2421 uint8_t status; 2422 #endif 2423 // get num cmd packets - limit to 1 to reduce complexity 2424 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2425 2426 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2427 switch (opcode){ 2428 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2429 if (packet[5]) break; 2430 // terminate, name 248 chars 2431 packet[6+248] = 0; 2432 log_info("local name: %s", &packet[6]); 2433 break; 2434 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2435 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2436 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2437 uint16_t acl_len = little_endian_read_16(packet, 6); 2438 uint16_t sco_len = packet[8]; 2439 2440 // determine usable ACL/SCO payload size 2441 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2442 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2443 2444 hci_stack->acl_packets_total_num = little_endian_read_16(packet, 9); 2445 hci_stack->sco_packets_total_num = little_endian_read_16(packet, 11); 2446 2447 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2448 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2449 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2450 } 2451 break; 2452 case HCI_OPCODE_HCI_READ_RSSI: 2453 if (packet[5] == ERROR_CODE_SUCCESS){ 2454 uint8_t event[5]; 2455 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2456 event[1] = 3; 2457 (void)memcpy(&event[2], &packet[6], 3); 2458 hci_emit_event(event, sizeof(event), 1); 2459 } 2460 break; 2461 #ifdef ENABLE_BLE 2462 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2463 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2464 hci_stack->le_iso_packets_total_num = packet[11]; 2465 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2466 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2467 2468 /* fall through */ 2469 2470 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2471 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2472 hci_stack->le_acl_packets_total_num = packet[8]; 2473 // determine usable ACL payload size 2474 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2475 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2476 } 2477 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); 2478 break; 2479 #endif 2480 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2481 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2482 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2483 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2484 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); 2485 break; 2486 #endif 2487 #ifdef ENABLE_LE_CENTRAL 2488 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2489 hci_stack->le_whitelist_capacity = packet[6]; 2490 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2491 break; 2492 #endif 2493 #ifdef ENABLE_LE_PERIPHERAL 2494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2495 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2496 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2497 break; 2498 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2499 if (hci_stack->le_advertising_set_in_current_command != 0) { 2500 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2501 hci_stack->le_advertising_set_in_current_command = 0; 2502 if (advertising_set == NULL) break; 2503 uint8_t adv_status = packet[6]; 2504 uint8_t tx_power = packet[7]; 2505 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 }; 2506 if (adv_status == 0){ 2507 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2508 } 2509 hci_emit_event(event, sizeof(event), 1); 2510 } 2511 break; 2512 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2513 if (hci_stack->le_advertising_set_in_current_command != 0) { 2514 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2515 hci_stack->le_advertising_set_in_current_command = 0; 2516 if (advertising_set == NULL) break; 2517 uint8_t adv_status = packet[5]; 2518 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2519 if (adv_status == 0){ 2520 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2521 } 2522 hci_emit_event(event, sizeof(event), 1); 2523 } 2524 break; 2525 #endif 2526 #endif 2527 case HCI_OPCODE_HCI_READ_BD_ADDR: 2528 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2529 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)); 2530 #ifdef ENABLE_CLASSIC 2531 if (hci_stack->link_key_db){ 2532 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2533 } 2534 #endif 2535 break; 2536 #ifdef ENABLE_CLASSIC 2537 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2538 hci_emit_discoverable_enabled(hci_stack->discoverable); 2539 break; 2540 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2541 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2542 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2543 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2544 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2545 hci_emit_event(event, sizeof(event), 1); 2546 } 2547 break; 2548 #endif 2549 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2550 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2551 2552 #ifdef ENABLE_CLASSIC 2553 // determine usable ACL packet types based on host buffer size and supported features 2554 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2555 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2556 #endif 2557 // Classic/LE 2558 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2559 break; 2560 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2561 manufacturer = little_endian_read_16(packet, 10); 2562 // map Cypress to Broadcom 2563 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2564 log_info("Treat Cypress as Broadcom"); 2565 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2566 little_endian_store_16(packet, 10, manufacturer); 2567 } 2568 hci_stack->manufacturer = manufacturer; 2569 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2570 break; 2571 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2572 hci_store_local_supported_commands(packet); 2573 break; 2574 #ifdef ENABLE_CLASSIC 2575 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2576 if (packet[5]) return; 2577 hci_stack->synchronous_flow_control_enabled = 1; 2578 break; 2579 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2580 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2581 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2582 conn = hci_connection_for_handle(handle); 2583 if (conn != NULL) { 2584 uint8_t key_size = 0; 2585 if (status == 0){ 2586 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2587 log_info("Handle %04x key Size: %u", handle, key_size); 2588 } else { 2589 key_size = 1; 2590 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2591 } 2592 hci_handle_read_encryption_key_size_complete(conn, key_size); 2593 } 2594 break; 2595 // assert pairing complete event is emitted. 2596 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2597 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2598 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2599 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2600 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2601 // lookup connection by gap pairing addr 2602 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2603 if (conn == NULL) break; 2604 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2605 break; 2606 2607 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2608 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2609 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2610 uint8_t event[67]; 2611 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2612 event[1] = 65; 2613 (void)memset(&event[2], 0, 65); 2614 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2615 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2616 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2617 event[2] = 3; 2618 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2619 } else { 2620 event[2] = 1; 2621 } 2622 } 2623 hci_emit_event(event, sizeof(event), 0); 2624 break; 2625 } 2626 2627 // note: only needed if user does not provide OOB data 2628 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2629 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2630 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2631 if (conn == NULL) break; 2632 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2633 break; 2634 #endif 2635 #endif 2636 default: 2637 break; 2638 } 2639 } 2640 2641 #ifdef ENABLE_BLE 2642 static void event_handle_le_connection_complete(const uint8_t * packet){ 2643 bd_addr_t addr; 2644 bd_addr_type_t addr_type; 2645 hci_connection_t * conn; 2646 2647 // Connection management 2648 reverse_bd_addr(&packet[8], addr); 2649 addr_type = (bd_addr_type_t)packet[7]; 2650 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2651 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2652 2653 #ifdef ENABLE_LE_CENTRAL 2654 // handle error: error is reported only to the initiator -> outgoing connection 2655 if (packet[3]){ 2656 2657 // handle cancelled outgoing connection 2658 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2659 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2660 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2661 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2662 // reset state 2663 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2664 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2665 // get outgoing connection conn struct for direct connect 2666 conn = gap_get_outgoing_connection(); 2667 } 2668 2669 // outgoing le connection establishment is done 2670 if (conn){ 2671 // remove entry 2672 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2673 btstack_memory_hci_connection_free( conn ); 2674 } 2675 return; 2676 } 2677 #endif 2678 2679 // on success, both hosts receive connection complete event 2680 if (packet[6] == HCI_ROLE_MASTER){ 2681 #ifdef ENABLE_LE_CENTRAL 2682 // if we're master on an le connection, it was an outgoing connection and we're done with it 2683 // note: no hci_connection_t object exists yet for connect with whitelist 2684 if (hci_is_le_connection_type(addr_type)){ 2685 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2686 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2687 } 2688 #endif 2689 } else { 2690 #ifdef ENABLE_LE_PERIPHERAL 2691 // if we're slave, it was an incoming connection, advertisements have stopped 2692 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 2693 #endif 2694 } 2695 2696 // LE connections are auto-accepted, so just create a connection if there isn't one already 2697 if (!conn){ 2698 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2699 } 2700 2701 // no memory, sorry. 2702 if (!conn){ 2703 return; 2704 } 2705 2706 conn->state = OPEN; 2707 conn->role = packet[6]; 2708 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 2709 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 2710 2711 #ifdef ENABLE_LE_PERIPHERAL 2712 if (packet[6] == HCI_ROLE_SLAVE){ 2713 hci_update_advertisements_enabled_for_current_roles(); 2714 } 2715 #endif 2716 2717 // init unenhanced att bearer mtu 2718 conn->att_connection.mtu = ATT_DEFAULT_MTU; 2719 conn->att_connection.mtu_exchanged = false; 2720 2721 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 2722 2723 // restart timer 2724 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2725 // btstack_run_loop_add_timer(&conn->timeout); 2726 2727 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2728 2729 hci_emit_nr_connections_changed(); 2730 } 2731 #endif 2732 2733 #ifdef ENABLE_CLASSIC 2734 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){ 2735 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 2736 // LEVEL_4 is tested by l2cap 2737 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 2738 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 2739 if (level >= LEVEL_3){ 2740 // MITM not possible without keyboard or display 2741 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2742 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2743 2744 // MITM possible if one side has keyboard and the other has keyboard or display 2745 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2746 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2747 2748 // MITM not possible if one side has only display and other side has no keyboard 2749 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2750 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2751 } 2752 // LEVEL 2 requires SSP, which is a given 2753 return true; 2754 } 2755 2756 static bool btstack_is_null(uint8_t * data, uint16_t size){ 2757 uint16_t i; 2758 for (i=0; i < size ; i++){ 2759 if (data[i] != 0) { 2760 return false; 2761 } 2762 } 2763 return true; 2764 } 2765 2766 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 2767 // get requested security level 2768 gap_security_level_t requested_security_level = conn->requested_security_level; 2769 if (hci_stack->gap_secure_connections_only_mode){ 2770 requested_security_level = LEVEL_4; 2771 } 2772 2773 // assess security: LEVEL 4 requires SC 2774 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 2775 if ((requested_security_level == LEVEL_4) && 2776 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 2777 !hci_remote_sc_enabled(conn)){ 2778 log_info("Level 4 required, but SC not supported -> abort"); 2779 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2780 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2781 return; 2782 } 2783 2784 // assess security based on io capabilities 2785 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 2786 // responder: fully validate io caps of both sides as well as OOB data 2787 bool security_possible = false; 2788 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 2789 2790 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2791 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 2792 // so we merge the OOB data availability 2793 uint8_t have_oob_data = conn->io_cap_response_oob_data; 2794 if (conn->classic_oob_c_192 != NULL){ 2795 have_oob_data |= 1; 2796 } 2797 if (conn->classic_oob_c_256 != NULL){ 2798 have_oob_data |= 2; 2799 } 2800 // for up to Level 3, either P-192 as well as P-256 will do 2801 // 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 2802 // if remote does not SC, we should not receive P-256 data either 2803 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 2804 security_possible = true; 2805 } 2806 // for Level 4, P-256 is needed 2807 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 2808 security_possible = true; 2809 } 2810 #endif 2811 2812 if (security_possible == false){ 2813 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 2814 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2815 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2816 return; 2817 } 2818 } else { 2819 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 2820 #ifndef ENABLE_CLASSIC_PAIRING_OOB 2821 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 2822 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 2823 log_info("Level 3+ required, but no input/output -> abort"); 2824 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2825 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2826 return; 2827 } 2828 #endif 2829 #endif 2830 } 2831 2832 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 2833 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 2834 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 2835 } else { 2836 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2837 } 2838 #endif 2839 } 2840 2841 #endif 2842 2843 static void event_handler(uint8_t *packet, uint16_t size){ 2844 2845 uint16_t event_length = packet[1]; 2846 2847 // assert packet is complete 2848 if (size != (event_length + 2u)){ 2849 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 2850 return; 2851 } 2852 2853 bd_addr_type_t addr_type; 2854 hci_con_handle_t handle; 2855 hci_connection_t * conn; 2856 int i; 2857 int create_connection_cmd; 2858 2859 #ifdef ENABLE_CLASSIC 2860 hci_link_type_t link_type; 2861 bd_addr_t addr; 2862 #endif 2863 2864 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 2865 2866 switch (hci_event_packet_get_type(packet)) { 2867 2868 case HCI_EVENT_COMMAND_COMPLETE: 2869 #ifdef ENABLE_CLASSIC 2870 if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_periodic_inquiry_mode)) { 2871 const uint8_t *params= hci_event_command_complete_get_return_parameters(packet); 2872 log_info("command complete (periodic inquiry), status %x", params[0]); 2873 if (params[0] == ERROR_CODE_SUCCESS) { 2874 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2875 } else { 2876 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2877 } 2878 } 2879 #endif 2880 handle_command_complete_event(packet, size); 2881 break; 2882 2883 case HCI_EVENT_COMMAND_STATUS: 2884 // get num cmd packets - limit to 1 to reduce complexity 2885 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2886 2887 // check command status to detected failed outgoing connections 2888 create_connection_cmd = 0; 2889 #ifdef ENABLE_CLASSIC 2890 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_create_connection)){ 2891 create_connection_cmd = 1; 2892 } 2893 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_accept_synchronous_connection)){ 2894 create_connection_cmd = 1; 2895 } 2896 #endif 2897 #ifdef ENABLE_LE_CENTRAL 2898 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_le_create_connection)){ 2899 create_connection_cmd = 1; 2900 } 2901 #endif 2902 if (create_connection_cmd) { 2903 uint8_t status = hci_event_command_status_get_status(packet); 2904 addr_type = hci_stack->outgoing_addr_type; 2905 conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2906 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); 2907 2908 // reset outgoing address info 2909 memset(hci_stack->outgoing_addr, 0, 6); 2910 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2911 2912 // on error 2913 if (status != ERROR_CODE_SUCCESS){ 2914 #ifdef ENABLE_LE_CENTRAL 2915 if (hci_is_le_connection_type(addr_type)){ 2916 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2917 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2918 } 2919 #endif 2920 // error => outgoing connection failed 2921 if (conn != NULL){ 2922 hci_handle_connection_failed(conn, status); 2923 } 2924 } 2925 } 2926 2927 #ifdef ENABLE_CLASSIC 2928 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_inquiry)){ 2929 uint8_t status = hci_event_command_status_get_status(packet); 2930 log_info("command status (inquiry), status %x", status); 2931 if (status == ERROR_CODE_SUCCESS) { 2932 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2933 } else { 2934 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2935 } 2936 } 2937 #endif 2938 break; 2939 2940 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 2941 if (size < 3) return; 2942 uint16_t num_handles = packet[2]; 2943 if (size != (3u + num_handles * 4u)) return; 2944 uint16_t offset = 3; 2945 for (i=0; i<num_handles;i++){ 2946 handle = little_endian_read_16(packet, offset) & 0x0fffu; 2947 offset += 2u; 2948 uint16_t num_packets = little_endian_read_16(packet, offset); 2949 offset += 2u; 2950 2951 conn = hci_connection_for_handle(handle); 2952 if (!conn){ 2953 log_error("hci_number_completed_packet lists unused con handle %u", handle); 2954 continue; 2955 } 2956 2957 if (conn->num_packets_sent >= num_packets){ 2958 conn->num_packets_sent -= num_packets; 2959 } else { 2960 log_error("hci_number_completed_packets, more packet slots freed then sent."); 2961 conn->num_packets_sent = 0; 2962 } 2963 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 2964 2965 #ifdef ENABLE_CLASSIC 2966 // For SCO, we do the can_send_now_check here 2967 hci_notify_if_sco_can_send_now(); 2968 #endif 2969 } 2970 break; 2971 } 2972 2973 #ifdef ENABLE_CLASSIC 2974 case HCI_EVENT_FLUSH_OCCURRED: 2975 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 2976 handle = hci_event_flush_occurred_get_handle(packet); 2977 conn = hci_connection_for_handle(handle); 2978 if (conn) { 2979 log_info("Flush occurred, disconnect 0x%04x", handle); 2980 conn->state = SEND_DISCONNECT; 2981 } 2982 break; 2983 2984 case HCI_EVENT_INQUIRY_COMPLETE: 2985 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 2986 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2987 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2988 hci_emit_event(event, sizeof(event), 1); 2989 } 2990 break; 2991 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 2992 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 2993 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 2994 } 2995 break; 2996 case HCI_EVENT_CONNECTION_REQUEST: 2997 reverse_bd_addr(&packet[2], addr); 2998 link_type = (hci_link_type_t) packet[11]; 2999 3000 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3001 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3002 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3003 bd_addr_copy(hci_stack->decline_addr, addr); 3004 break; 3005 } 3006 3007 if (hci_stack->gap_classic_accept_callback != NULL){ 3008 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3009 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3010 bd_addr_copy(hci_stack->decline_addr, addr); 3011 break; 3012 } 3013 } 3014 3015 // TODO: eval COD 8-10 3016 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3017 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3018 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3019 if (!conn) { 3020 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3021 } 3022 if (!conn) { 3023 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3024 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3025 bd_addr_copy(hci_stack->decline_addr, addr); 3026 hci_run(); 3027 // avoid event to higher layer 3028 return; 3029 } 3030 conn->role = HCI_ROLE_SLAVE; 3031 conn->state = RECEIVED_CONNECTION_REQUEST; 3032 // store info about eSCO 3033 if (link_type == HCI_LINK_TYPE_ESCO){ 3034 conn->remote_supported_features[0] |= 1; 3035 } 3036 hci_run(); 3037 break; 3038 3039 case HCI_EVENT_CONNECTION_COMPLETE: 3040 // Connection management 3041 reverse_bd_addr(&packet[5], addr); 3042 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3043 addr_type = BD_ADDR_TYPE_ACL; 3044 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3045 if (conn) { 3046 if (!packet[2]){ 3047 conn->state = OPEN; 3048 conn->con_handle = little_endian_read_16(packet, 3); 3049 3050 // trigger write supervision timeout if we're master 3051 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3052 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3053 } 3054 3055 // trigger write automatic flush timeout 3056 if (hci_stack->automatic_flush_timeout != 0){ 3057 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3058 } 3059 3060 // restart timer 3061 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3062 btstack_run_loop_add_timer(&conn->timeout); 3063 3064 // trigger remote features for dedicated bonding 3065 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3066 hci_trigger_remote_features_for_connection(conn); 3067 } 3068 3069 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3070 3071 hci_emit_nr_connections_changed(); 3072 } else { 3073 // connection failed 3074 hci_handle_connection_failed(conn, packet[2]); 3075 } 3076 } 3077 break; 3078 3079 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3080 reverse_bd_addr(&packet[5], addr); 3081 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3082 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3083 if (packet[2]){ 3084 // connection failed 3085 if (conn){ 3086 hci_handle_connection_failed(conn, packet[2]); 3087 } 3088 break; 3089 } 3090 if (!conn) { 3091 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3092 } 3093 if (!conn) { 3094 break; 3095 } 3096 conn->state = OPEN; 3097 conn->con_handle = little_endian_read_16(packet, 3); 3098 3099 #ifdef ENABLE_SCO_OVER_HCI 3100 // update SCO 3101 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3102 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3103 } 3104 // trigger can send now 3105 if (hci_have_usb_transport()){ 3106 hci_stack->sco_can_send_now = true; 3107 } 3108 #endif 3109 #ifdef HAVE_SCO_TRANSPORT 3110 // configure sco transport 3111 if (hci_stack->sco_transport != NULL){ 3112 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3113 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3114 } 3115 #endif 3116 break; 3117 3118 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3119 handle = little_endian_read_16(packet, 3); 3120 conn = hci_connection_for_handle(handle); 3121 if (!conn) break; 3122 if (!packet[2]){ 3123 const uint8_t * features = &packet[5]; 3124 hci_handle_remote_features_page_0(conn, features); 3125 3126 // read extended features if possible 3127 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3128 && ((conn->remote_supported_features[0] & 2) != 0)) { 3129 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3130 break; 3131 } 3132 } 3133 hci_handle_remote_features_received(conn); 3134 break; 3135 3136 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3137 handle = little_endian_read_16(packet, 3); 3138 conn = hci_connection_for_handle(handle); 3139 if (!conn) break; 3140 // status = ok, page = 1 3141 if (!packet[2]) { 3142 uint8_t page_number = packet[5]; 3143 uint8_t maximum_page_number = packet[6]; 3144 const uint8_t * features = &packet[7]; 3145 bool done = false; 3146 switch (page_number){ 3147 case 1: 3148 hci_handle_remote_features_page_1(conn, features); 3149 if (maximum_page_number >= 2){ 3150 // get Secure Connections (Controller) from Page 2 if available 3151 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3152 } else { 3153 // otherwise, assume SC (Controller) == SC (Host) 3154 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3155 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3156 } 3157 done = true; 3158 } 3159 break; 3160 case 2: 3161 hci_handle_remote_features_page_2(conn, features); 3162 done = true; 3163 break; 3164 default: 3165 break; 3166 } 3167 if (!done) break; 3168 } 3169 hci_handle_remote_features_received(conn); 3170 break; 3171 3172 case HCI_EVENT_LINK_KEY_REQUEST: 3173 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3174 hci_event_link_key_request_get_bd_addr(packet, addr); 3175 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3176 if (!conn) break; 3177 3178 // lookup link key in db if not cached 3179 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3180 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3181 } 3182 3183 // response sent by hci_run() 3184 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3185 #endif 3186 break; 3187 3188 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3189 hci_event_link_key_request_get_bd_addr(packet, addr); 3190 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3191 if (!conn) break; 3192 3193 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3194 3195 // CVE-2020-26555: ignore NULL link key 3196 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3197 if (btstack_is_null(&packet[8], 16)) break; 3198 3199 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3200 // Change Connection Encryption keeps link key type 3201 if (link_key_type != CHANGED_COMBINATION_KEY){ 3202 conn->link_key_type = link_key_type; 3203 } 3204 3205 // cache link key. link keys stored in little-endian format for legacy reasons 3206 memcpy(&conn->link_key, &packet[8], 16); 3207 3208 // only store link key: 3209 // - if bondable enabled 3210 if (hci_stack->bondable == false) break; 3211 // - if security level sufficient 3212 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3213 // - for SSP, also check if remote side requested bonding as well 3214 if (conn->link_key_type != COMBINATION_KEY){ 3215 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3216 if (!remote_bonding){ 3217 break; 3218 } 3219 } 3220 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3221 break; 3222 } 3223 3224 case HCI_EVENT_PIN_CODE_REQUEST: 3225 hci_event_pin_code_request_get_bd_addr(packet, addr); 3226 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3227 if (!conn) break; 3228 3229 hci_pairing_started(conn, false); 3230 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3231 if (!hci_stack->bondable ){ 3232 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3233 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3234 hci_run(); 3235 return; 3236 } 3237 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3238 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3239 log_info("Level 4 required, but SC not supported -> abort"); 3240 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3241 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3242 hci_run(); 3243 return; 3244 } 3245 break; 3246 3247 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3248 hci_event_io_capability_response_get_bd_addr(packet, addr); 3249 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3250 if (!conn) break; 3251 3252 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3253 hci_pairing_started(conn, true); 3254 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3255 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3256 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3257 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3258 #endif 3259 break; 3260 3261 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3262 hci_event_io_capability_response_get_bd_addr(packet, addr); 3263 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3264 if (!conn) break; 3265 3266 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3267 hci_connection_timestamp(conn); 3268 hci_pairing_started(conn, true); 3269 break; 3270 3271 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3272 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3273 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3274 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3275 if (!conn) break; 3276 3277 hci_connection_timestamp(conn); 3278 3279 hci_pairing_started(conn, true); 3280 3281 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3282 break; 3283 #endif 3284 3285 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3286 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3287 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3288 if (!conn) break; 3289 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3290 if (hci_stack->ssp_auto_accept){ 3291 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3292 }; 3293 } else { 3294 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3295 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3296 // don't forward event to app 3297 hci_run(); 3298 return; 3299 } 3300 break; 3301 3302 case HCI_EVENT_USER_PASSKEY_REQUEST: 3303 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3304 if (hci_stack->ssp_auto_accept){ 3305 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3306 }; 3307 break; 3308 3309 case HCI_EVENT_MODE_CHANGE: 3310 handle = hci_event_mode_change_get_handle(packet); 3311 conn = hci_connection_for_handle(handle); 3312 if (!conn) break; 3313 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3314 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3315 break; 3316 #endif 3317 3318 case HCI_EVENT_ENCRYPTION_CHANGE: 3319 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3320 handle = hci_event_encryption_change_get_connection_handle(packet); 3321 conn = hci_connection_for_handle(handle); 3322 if (!conn) break; 3323 if (hci_event_encryption_change_get_status(packet) == 0u) { 3324 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3325 if (encryption_enabled){ 3326 if (hci_is_le_connection(conn)){ 3327 // For LE, we accept connection as encrypted 3328 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3329 } 3330 #ifdef ENABLE_CLASSIC 3331 else { 3332 3333 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3334 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3335 bool connected_uses_aes_ccm = encryption_enabled == 2; 3336 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3337 log_info("SC during pairing, but only E0 now -> abort"); 3338 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3339 break; 3340 } 3341 3342 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3343 if (connected_uses_aes_ccm){ 3344 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3345 } 3346 3347 #ifdef ENABLE_TESTING_SUPPORT 3348 // work around for issue with PTS dongle 3349 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3350 #endif 3351 // validate encryption key size 3352 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3353 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3354 // already got encryption key size 3355 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3356 } else { 3357 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3358 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3359 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3360 } else { 3361 // if not, pretend everything is perfect 3362 hci_handle_read_encryption_key_size_complete(conn, 16); 3363 } 3364 } 3365 } 3366 #endif 3367 } else { 3368 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3369 } 3370 } else { 3371 uint8_t status = hci_event_encryption_change_get_status(packet); 3372 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3373 conn->bonding_flags &= ~BONDING_DEDICATED; 3374 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3375 conn->bonding_status = status; 3376 } 3377 } 3378 3379 break; 3380 3381 #ifdef ENABLE_CLASSIC 3382 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3383 handle = hci_event_authentication_complete_get_connection_handle(packet); 3384 conn = hci_connection_for_handle(handle); 3385 if (!conn) break; 3386 3387 // clear authentication active flag 3388 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3389 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3390 3391 // authenticated only if auth status == 0 3392 if (hci_event_authentication_complete_get_status(packet) == 0){ 3393 // authenticated 3394 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3395 3396 // If not already encrypted, start encryption 3397 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3398 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3399 break; 3400 } 3401 } 3402 3403 // emit updated security level 3404 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3405 break; 3406 3407 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3408 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3409 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3410 if (!conn) break; 3411 3412 // treat successfully paired connection as authenticated 3413 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3414 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3415 } 3416 3417 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3418 break; 3419 #endif 3420 3421 // HCI_EVENT_DISCONNECTION_COMPLETE 3422 // has been split, to first notify stack before shutting connection down 3423 // see end of function, too. 3424 case HCI_EVENT_DISCONNECTION_COMPLETE: 3425 if (packet[2]) break; // status != 0 3426 handle = little_endian_read_16(packet, 3); 3427 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3428 if (hci_stack->acl_fragmentation_total_size > 0u) { 3429 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3430 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3431 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3432 hci_stack->acl_fragmentation_total_size = 0; 3433 hci_stack->acl_fragmentation_pos = 0; 3434 if (release_buffer){ 3435 hci_release_packet_buffer(); 3436 } 3437 } 3438 } 3439 3440 conn = hci_connection_for_handle(handle); 3441 if (!conn) break; 3442 #ifdef ENABLE_CLASSIC 3443 // pairing failed if it was ongoing 3444 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3445 #endif 3446 3447 // emit dedicatd bonding event 3448 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3449 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3450 } 3451 3452 // mark connection for shutdown, stop timers, reset state 3453 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3454 hci_connection_stop_timer(conn); 3455 hci_connection_init(conn); 3456 3457 #ifdef ENABLE_BLE 3458 #ifdef ENABLE_LE_PERIPHERAL 3459 // re-enable advertisements for le connections if active 3460 if (hci_is_le_connection(conn)){ 3461 hci_update_advertisements_enabled_for_current_roles(); 3462 } 3463 #endif 3464 #endif 3465 break; 3466 3467 case HCI_EVENT_HARDWARE_ERROR: 3468 log_error("Hardware Error: 0x%02x", packet[2]); 3469 if (hci_stack->hardware_error_callback){ 3470 (*hci_stack->hardware_error_callback)(packet[2]); 3471 } else { 3472 // if no special requests, just reboot stack 3473 hci_power_control_off(); 3474 hci_power_control_on(); 3475 } 3476 break; 3477 3478 #ifdef ENABLE_CLASSIC 3479 case HCI_EVENT_ROLE_CHANGE: 3480 if (packet[2]) break; // status != 0 3481 reverse_bd_addr(&packet[3], addr); 3482 addr_type = BD_ADDR_TYPE_ACL; 3483 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3484 if (!conn) break; 3485 conn->role = packet[9]; 3486 break; 3487 #endif 3488 3489 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3490 // release packet buffer only for asynchronous transport and if there are not further fragements 3491 if (hci_transport_synchronous()) { 3492 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3493 return; // instead of break: to avoid re-entering hci_run() 3494 } 3495 hci_stack->acl_fragmentation_tx_active = 0; 3496 if (hci_stack->acl_fragmentation_total_size) break; 3497 hci_release_packet_buffer(); 3498 3499 // L2CAP receives this event via the hci_emit_event below 3500 3501 #ifdef ENABLE_CLASSIC 3502 // For SCO, we do the can_send_now_check here 3503 hci_notify_if_sco_can_send_now(); 3504 #endif 3505 break; 3506 3507 #ifdef ENABLE_CLASSIC 3508 case HCI_EVENT_SCO_CAN_SEND_NOW: 3509 // For SCO, we do the can_send_now_check here 3510 hci_stack->sco_can_send_now = true; 3511 hci_notify_if_sco_can_send_now(); 3512 return; 3513 3514 // explode inquriy results for easier consumption 3515 case HCI_EVENT_INQUIRY_RESULT: 3516 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3517 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3518 gap_inquiry_explode(packet, size); 3519 break; 3520 #endif 3521 3522 #ifdef ENABLE_BLE 3523 case HCI_EVENT_LE_META: 3524 switch (packet[2]){ 3525 #ifdef ENABLE_LE_CENTRAL 3526 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3527 if (!hci_stack->le_scanning_enabled) break; 3528 le_handle_advertisement_report(packet, size); 3529 break; 3530 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3531 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3532 if (!hci_stack->le_scanning_enabled) break; 3533 le_handle_extended_advertisement_report(packet, size); 3534 break; 3535 #endif 3536 #endif 3537 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3538 event_handle_le_connection_complete(packet); 3539 break; 3540 3541 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3542 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3543 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3544 conn = hci_connection_for_handle(handle); 3545 if (!conn) break; 3546 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3547 break; 3548 3549 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3550 // connection 3551 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3552 conn = hci_connection_for_handle(handle); 3553 if (conn) { 3554 // read arguments 3555 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3556 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3557 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3558 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3559 3560 // validate against current connection parameter range 3561 le_connection_parameter_range_t existing_range; 3562 gap_get_connection_parameter_range(&existing_range); 3563 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3564 if (update_parameter){ 3565 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3566 conn->le_conn_interval_min = le_conn_interval_min; 3567 conn->le_conn_interval_max = le_conn_interval_max; 3568 conn->le_conn_latency = le_conn_latency; 3569 conn->le_supervision_timeout = le_supervision_timeout; 3570 } else { 3571 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3572 } 3573 } 3574 break; 3575 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3576 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3577 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3578 conn = hci_connection_for_handle(handle); 3579 if (conn) { 3580 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3581 } 3582 break; 3583 #endif 3584 default: 3585 break; 3586 } 3587 break; 3588 #endif 3589 case HCI_EVENT_VENDOR_SPECIFIC: 3590 // Vendor specific commands often create vendor specific event instead of num completed packets 3591 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 3592 switch (hci_stack->manufacturer){ 3593 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 3594 hci_stack->num_cmd_packets = 1; 3595 break; 3596 default: 3597 break; 3598 } 3599 break; 3600 default: 3601 break; 3602 } 3603 3604 handle_event_for_current_stack_state(packet, size); 3605 3606 // notify upper stack 3607 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 3608 3609 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 3610 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 3611 handle = little_endian_read_16(packet, 3); 3612 hci_connection_t * aConn = hci_connection_for_handle(handle); 3613 // discard connection if app did not trigger a reconnect in the event handler 3614 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 3615 hci_shutdown_connection(aConn); 3616 } 3617 } 3618 3619 // execute main loop 3620 hci_run(); 3621 } 3622 3623 #ifdef ENABLE_CLASSIC 3624 3625 #ifdef ENABLE_SCO_OVER_HCI 3626 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 3627 static void sco_schedule_tx(hci_connection_t * conn); 3628 3629 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 3630 log_debug("SCO TX Timeout"); 3631 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 3632 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3633 if (!conn) return; 3634 3635 // trigger send 3636 conn->sco_tx_ready = 1; 3637 // extra packet if CVSD but SCO buffer is too short 3638 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 3639 conn->sco_tx_ready++; 3640 } 3641 hci_notify_if_sco_can_send_now(); 3642 } 3643 3644 3645 #define SCO_TX_AFTER_RX_MS (6) 3646 3647 static void sco_schedule_tx(hci_connection_t * conn){ 3648 3649 uint32_t now = btstack_run_loop_get_time_ms(); 3650 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 3651 int time_delta_ms = sco_tx_ms - now; 3652 3653 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 3654 3655 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 3656 btstack_run_loop_remove_timer(timer); 3657 btstack_run_loop_set_timer(timer, time_delta_ms); 3658 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 3659 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 3660 btstack_run_loop_add_timer(timer); 3661 } 3662 #endif 3663 3664 static void sco_handler(uint8_t * packet, uint16_t size){ 3665 // lookup connection struct 3666 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 3667 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3668 if (!conn) return; 3669 3670 #ifdef ENABLE_SCO_OVER_HCI 3671 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 3672 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 3673 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 3674 packet[2] = 0x3c; 3675 memmove(&packet[3], &packet[23], 63); 3676 size = 63; 3677 } 3678 } 3679 3680 if (hci_have_usb_transport()){ 3681 // Nothing to do 3682 } else { 3683 // 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); 3684 if (hci_stack->synchronous_flow_control_enabled == 0){ 3685 uint32_t now = btstack_run_loop_get_time_ms(); 3686 3687 if (!conn->sco_rx_valid){ 3688 // ignore first 10 packets 3689 conn->sco_rx_count++; 3690 // log_debug("sco rx count %u", conn->sco_rx_count); 3691 if (conn->sco_rx_count == 10) { 3692 // use first timestamp as is and pretent it just started 3693 conn->sco_rx_ms = now; 3694 conn->sco_rx_valid = 1; 3695 conn->sco_rx_count = 0; 3696 sco_schedule_tx(conn); 3697 } 3698 } else { 3699 // track expected arrival timme 3700 conn->sco_rx_count++; 3701 conn->sco_rx_ms += 7; 3702 int delta = (int32_t) (now - conn->sco_rx_ms); 3703 if (delta > 0){ 3704 conn->sco_rx_ms++; 3705 } 3706 // log_debug("sco rx %u", conn->sco_rx_ms); 3707 sco_schedule_tx(conn); 3708 } 3709 } 3710 } 3711 #endif 3712 3713 // deliver to app 3714 if (hci_stack->sco_packet_handler) { 3715 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 3716 } 3717 3718 #ifdef HAVE_SCO_TRANSPORT 3719 // We can send one packet for each received packet 3720 conn->sco_tx_ready++; 3721 hci_notify_if_sco_can_send_now(); 3722 #endif 3723 3724 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 3725 conn->num_packets_completed++; 3726 hci_stack->host_completed_packets = 1; 3727 hci_run(); 3728 #endif 3729 } 3730 #endif 3731 3732 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 3733 hci_dump_packet(packet_type, 1, packet, size); 3734 switch (packet_type) { 3735 case HCI_EVENT_PACKET: 3736 event_handler(packet, size); 3737 break; 3738 case HCI_ACL_DATA_PACKET: 3739 acl_handler(packet, size); 3740 break; 3741 #ifdef ENABLE_CLASSIC 3742 case HCI_SCO_DATA_PACKET: 3743 sco_handler(packet, size); 3744 break; 3745 #endif 3746 #ifdef ENABLE_BLE 3747 case HCI_ISO_DATA_PACKET: 3748 if (hci_stack->iso_packet_handler != NULL){ 3749 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 3750 } 3751 break; 3752 #endif 3753 default: 3754 break; 3755 } 3756 } 3757 3758 /** 3759 * @brief Add event packet handler. 3760 */ 3761 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3762 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3763 } 3764 3765 /** 3766 * @brief Remove event packet handler. 3767 */ 3768 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3769 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3770 } 3771 3772 /** Register HCI packet handlers */ 3773 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 3774 hci_stack->acl_packet_handler = handler; 3775 } 3776 3777 #ifdef ENABLE_CLASSIC 3778 /** 3779 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 3780 */ 3781 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 3782 hci_stack->sco_packet_handler = handler; 3783 } 3784 #endif 3785 3786 #ifdef ENABLE_BLE 3787 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 3788 hci_stack->iso_packet_handler = handler; 3789 } 3790 #endif 3791 3792 static void hci_state_reset(void){ 3793 // no connections yet 3794 hci_stack->connections = NULL; 3795 3796 // keep discoverable/connectable as this has been requested by the client(s) 3797 // hci_stack->discoverable = 0; 3798 // hci_stack->connectable = 0; 3799 // hci_stack->bondable = 1; 3800 // hci_stack->own_addr_type = 0; 3801 3802 // buffer is free 3803 hci_stack->hci_packet_buffer_reserved = false; 3804 3805 // no pending cmds 3806 hci_stack->decline_reason = 0; 3807 3808 hci_stack->secure_connections_active = false; 3809 3810 #ifdef ENABLE_CLASSIC 3811 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 3812 hci_stack->page_timeout = 0x6000; // ca. 15 sec 3813 3814 hci_stack->gap_tasks_classic = 3815 GAP_TASK_SET_DEFAULT_LINK_POLICY | 3816 GAP_TASK_SET_CLASS_OF_DEVICE | 3817 GAP_TASK_SET_LOCAL_NAME | 3818 GAP_TASK_SET_EIR_DATA | 3819 GAP_TASK_WRITE_SCAN_ENABLE | 3820 GAP_TASK_WRITE_PAGE_TIMEOUT; 3821 #endif 3822 3823 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3824 hci_stack->classic_read_local_oob_data = false; 3825 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3826 #endif 3827 3828 // LE 3829 #ifdef ENABLE_BLE 3830 memset(hci_stack->le_random_address, 0, 6); 3831 hci_stack->le_random_address_set = 0; 3832 #endif 3833 #ifdef ENABLE_LE_CENTRAL 3834 hci_stack->le_scanning_active = false; 3835 hci_stack->le_scanning_param_update = true; 3836 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3837 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3838 hci_stack->le_whitelist_capacity = 0; 3839 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3840 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 3841 #endif 3842 #endif 3843 #ifdef ENABLE_LE_PERIPHERAL 3844 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3845 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 3846 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 3847 } 3848 if (hci_stack->le_advertisements_data != NULL){ 3849 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 3850 } 3851 #endif 3852 } 3853 3854 #ifdef ENABLE_CLASSIC 3855 /** 3856 * @brief Configure Bluetooth hardware control. Has to be called before power on. 3857 */ 3858 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 3859 // store and open remote device db 3860 hci_stack->link_key_db = link_key_db; 3861 if (hci_stack->link_key_db) { 3862 hci_stack->link_key_db->open(); 3863 } 3864 } 3865 #endif 3866 3867 void hci_init(const hci_transport_t *transport, const void *config){ 3868 3869 #ifdef HAVE_MALLOC 3870 if (!hci_stack) { 3871 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 3872 } 3873 #else 3874 hci_stack = &hci_stack_static; 3875 #endif 3876 memset(hci_stack, 0, sizeof(hci_stack_t)); 3877 3878 // reference to use transport layer implementation 3879 hci_stack->hci_transport = transport; 3880 3881 // reference to used config 3882 hci_stack->config = config; 3883 3884 // setup pointer for outgoing packet buffer 3885 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 3886 3887 // max acl payload size defined in config.h 3888 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 3889 3890 // register packet handlers with transport 3891 transport->register_packet_handler(&packet_handler); 3892 3893 hci_stack->state = HCI_STATE_OFF; 3894 3895 // class of device 3896 hci_stack->class_of_device = 0x007a020c; // Smartphone 3897 3898 // bondable by default 3899 hci_stack->bondable = 1; 3900 3901 #ifdef ENABLE_CLASSIC 3902 // classic name 3903 hci_stack->local_name = default_classic_name; 3904 3905 // Master slave policy 3906 hci_stack->master_slave_policy = 1; 3907 3908 // Allow Role Switch 3909 hci_stack->allow_role_switch = 1; 3910 3911 // Default / minimum security level = 2 3912 hci_stack->gap_security_level = LEVEL_2; 3913 3914 // Default Security Mode 4 3915 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 3916 3917 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 3918 hci_stack->gap_required_encyrption_key_size = 7; 3919 3920 // Link Supervision Timeout 3921 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 3922 3923 #endif 3924 3925 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 3926 hci_stack->ssp_enable = 1; 3927 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 3928 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 3929 hci_stack->ssp_auto_accept = 1; 3930 3931 // Secure Connections: enable (requires support from Controller) 3932 hci_stack->secure_connections_enable = true; 3933 3934 // voice setting - signed 16 bit pcm data with CVSD over the air 3935 hci_stack->sco_voice_setting = 0x60; 3936 3937 #ifdef ENABLE_LE_CENTRAL 3938 // connection parameter to use for outgoing connections 3939 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 3940 hci_stack->le_connection_scan_window = 0x0030; // 30ms 3941 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 3942 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 3943 hci_stack->le_connection_latency = 4; // 4 3944 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 3945 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 3946 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 3947 3948 // default LE Scanning 3949 hci_stack->le_scan_type = 0x1; // active 3950 hci_stack->le_scan_interval = 0x1e0; // 300 ms 3951 hci_stack->le_scan_window = 0x30; // 30 ms 3952 #endif 3953 3954 #ifdef ENABLE_LE_PERIPHERAL 3955 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 3956 #endif 3957 3958 // connection parameter range used to answer connection parameter update requests in l2cap 3959 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 3960 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 3961 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 3962 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 3963 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 3964 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 3965 3966 hci_state_reset(); 3967 } 3968 3969 void hci_deinit(void){ 3970 btstack_run_loop_remove_timer(&hci_stack->timeout); 3971 #ifdef HAVE_MALLOC 3972 if (hci_stack) { 3973 free(hci_stack); 3974 } 3975 #endif 3976 hci_stack = NULL; 3977 3978 #ifdef ENABLE_CLASSIC 3979 disable_l2cap_timeouts = 0; 3980 #endif 3981 } 3982 3983 /** 3984 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 3985 */ 3986 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 3987 hci_stack->chipset = chipset_driver; 3988 3989 // reset chipset driver - init is also called on power_up 3990 if (hci_stack->chipset && hci_stack->chipset->init){ 3991 hci_stack->chipset->init(hci_stack->config); 3992 } 3993 } 3994 3995 /** 3996 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 3997 */ 3998 void hci_set_control(const btstack_control_t *hardware_control){ 3999 // references to used control implementation 4000 hci_stack->control = hardware_control; 4001 // init with transport config 4002 hardware_control->init(hci_stack->config); 4003 } 4004 4005 static void hci_discard_connections(void){ 4006 btstack_linked_list_iterator_t lit; 4007 btstack_linked_list_iterator_init(&lit, &hci_stack->connections); 4008 while (btstack_linked_list_iterator_has_next(&lit)){ 4009 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4010 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&lit); 4011 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4012 hci_shutdown_connection(connection); 4013 } 4014 } 4015 4016 void hci_close(void){ 4017 4018 #ifdef ENABLE_CLASSIC 4019 // close remote device db 4020 if (hci_stack->link_key_db) { 4021 hci_stack->link_key_db->close(); 4022 } 4023 #endif 4024 4025 hci_discard_connections(); 4026 4027 hci_power_control(HCI_POWER_OFF); 4028 4029 #ifdef HAVE_MALLOC 4030 free(hci_stack); 4031 #endif 4032 hci_stack = NULL; 4033 } 4034 4035 #ifdef HAVE_SCO_TRANSPORT 4036 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4037 hci_stack->sco_transport = sco_transport; 4038 sco_transport->register_packet_handler(&packet_handler); 4039 } 4040 #endif 4041 4042 #ifdef ENABLE_CLASSIC 4043 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4044 // validate ranage and set 4045 if (encryption_key_size < 7) return; 4046 if (encryption_key_size > 16) return; 4047 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4048 } 4049 4050 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4051 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4052 hci_stack->gap_security_mode = security_mode; 4053 return ERROR_CODE_SUCCESS; 4054 } else { 4055 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4056 } 4057 } 4058 4059 gap_security_mode_t gap_get_security_mode(void){ 4060 return hci_stack->gap_security_mode; 4061 } 4062 4063 void gap_set_security_level(gap_security_level_t security_level){ 4064 hci_stack->gap_security_level = security_level; 4065 } 4066 4067 gap_security_level_t gap_get_security_level(void){ 4068 if (hci_stack->gap_secure_connections_only_mode){ 4069 return LEVEL_4; 4070 } 4071 return hci_stack->gap_security_level; 4072 } 4073 4074 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4075 hci_stack->gap_minimal_service_security_level = security_level; 4076 } 4077 4078 void gap_set_secure_connections_only_mode(bool enable){ 4079 hci_stack->gap_secure_connections_only_mode = enable; 4080 } 4081 4082 bool gap_get_secure_connections_only_mode(void){ 4083 return hci_stack->gap_secure_connections_only_mode; 4084 } 4085 #endif 4086 4087 #ifdef ENABLE_CLASSIC 4088 void gap_set_class_of_device(uint32_t class_of_device){ 4089 hci_stack->class_of_device = class_of_device; 4090 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4091 hci_run(); 4092 } 4093 4094 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4095 hci_stack->default_link_policy_settings = default_link_policy_settings; 4096 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4097 hci_run(); 4098 } 4099 4100 void gap_set_allow_role_switch(bool allow_role_switch){ 4101 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4102 } 4103 4104 uint8_t hci_get_allow_role_switch(void){ 4105 return hci_stack->allow_role_switch; 4106 } 4107 4108 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4109 hci_stack->link_supervision_timeout = link_supervision_timeout; 4110 } 4111 4112 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4113 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4114 } 4115 4116 uint16_t hci_automatic_flush_timeout(void){ 4117 return hci_stack->automatic_flush_timeout; 4118 } 4119 4120 void hci_disable_l2cap_timeout_check(void){ 4121 disable_l2cap_timeouts = 1; 4122 } 4123 #endif 4124 4125 #ifndef HAVE_HOST_CONTROLLER_API 4126 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4127 void hci_set_bd_addr(bd_addr_t addr){ 4128 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4129 hci_stack->custom_bd_addr_set = 1; 4130 } 4131 #endif 4132 4133 // State-Module-Driver overview 4134 // state module low-level 4135 // HCI_STATE_OFF off close 4136 // HCI_STATE_INITIALIZING, on open 4137 // HCI_STATE_WORKING, on open 4138 // HCI_STATE_HALTING, on open 4139 // HCI_STATE_SLEEPING, off/sleep close 4140 // HCI_STATE_FALLING_ASLEEP on open 4141 4142 static int hci_power_control_on(void){ 4143 4144 // power on 4145 int err = 0; 4146 if (hci_stack->control && hci_stack->control->on){ 4147 err = (*hci_stack->control->on)(); 4148 } 4149 if (err){ 4150 log_error( "POWER_ON failed"); 4151 hci_emit_hci_open_failed(); 4152 return err; 4153 } 4154 4155 // int chipset driver 4156 if (hci_stack->chipset && hci_stack->chipset->init){ 4157 hci_stack->chipset->init(hci_stack->config); 4158 } 4159 4160 // init transport 4161 if (hci_stack->hci_transport->init){ 4162 hci_stack->hci_transport->init(hci_stack->config); 4163 } 4164 4165 // open transport 4166 err = hci_stack->hci_transport->open(); 4167 if (err){ 4168 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4169 if (hci_stack->control && hci_stack->control->off){ 4170 (*hci_stack->control->off)(); 4171 } 4172 hci_emit_hci_open_failed(); 4173 return err; 4174 } 4175 return 0; 4176 } 4177 4178 static void hci_power_control_off(void){ 4179 4180 log_info("hci_power_control_off"); 4181 4182 // close low-level device 4183 hci_stack->hci_transport->close(); 4184 4185 log_info("hci_power_control_off - hci_transport closed"); 4186 4187 // power off 4188 if (hci_stack->control && hci_stack->control->off){ 4189 (*hci_stack->control->off)(); 4190 } 4191 4192 log_info("hci_power_control_off - control closed"); 4193 4194 hci_stack->state = HCI_STATE_OFF; 4195 } 4196 4197 static void hci_power_control_sleep(void){ 4198 4199 log_info("hci_power_control_sleep"); 4200 4201 #if 0 4202 // don't close serial port during sleep 4203 4204 // close low-level device 4205 hci_stack->hci_transport->close(hci_stack->config); 4206 #endif 4207 4208 // sleep mode 4209 if (hci_stack->control && hci_stack->control->sleep){ 4210 (*hci_stack->control->sleep)(); 4211 } 4212 4213 hci_stack->state = HCI_STATE_SLEEPING; 4214 } 4215 4216 static int hci_power_control_wake(void){ 4217 4218 log_info("hci_power_control_wake"); 4219 4220 // wake on 4221 if (hci_stack->control && hci_stack->control->wake){ 4222 (*hci_stack->control->wake)(); 4223 } 4224 4225 #if 0 4226 // open low-level device 4227 int err = hci_stack->hci_transport->open(hci_stack->config); 4228 if (err){ 4229 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4230 if (hci_stack->control && hci_stack->control->off){ 4231 (*hci_stack->control->off)(); 4232 } 4233 hci_emit_hci_open_failed(); 4234 return err; 4235 } 4236 #endif 4237 4238 return 0; 4239 } 4240 4241 static void hci_power_enter_initializing_state(void){ 4242 // set up state machine 4243 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4244 hci_stack->hci_packet_buffer_reserved = false; 4245 hci_stack->state = HCI_STATE_INITIALIZING; 4246 hci_stack->substate = HCI_INIT_SEND_RESET; 4247 } 4248 4249 static void hci_power_enter_halting_state(void){ 4250 #ifdef ENABLE_BLE 4251 hci_whitelist_free(); 4252 #endif 4253 // see hci_run 4254 hci_stack->state = HCI_STATE_HALTING; 4255 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4256 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4257 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4258 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4259 btstack_run_loop_add_timer(&hci_stack->timeout); 4260 } 4261 4262 // returns error 4263 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4264 int err; 4265 switch (power_mode){ 4266 case HCI_POWER_ON: 4267 err = hci_power_control_on(); 4268 if (err != 0) { 4269 log_error("hci_power_control_on() error %d", err); 4270 return err; 4271 } 4272 hci_power_enter_initializing_state(); 4273 break; 4274 case HCI_POWER_OFF: 4275 // do nothing 4276 break; 4277 case HCI_POWER_SLEEP: 4278 // do nothing (with SLEEP == OFF) 4279 break; 4280 default: 4281 btstack_assert(false); 4282 break; 4283 } 4284 return ERROR_CODE_SUCCESS; 4285 } 4286 4287 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4288 switch (power_mode){ 4289 case HCI_POWER_ON: 4290 // do nothing 4291 break; 4292 case HCI_POWER_OFF: 4293 // no connections yet, just turn it off 4294 hci_power_control_off(); 4295 break; 4296 case HCI_POWER_SLEEP: 4297 // no connections yet, just turn it off 4298 hci_power_control_sleep(); 4299 break; 4300 default: 4301 btstack_assert(false); 4302 break; 4303 } 4304 return ERROR_CODE_SUCCESS; 4305 } 4306 4307 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4308 switch (power_mode){ 4309 case HCI_POWER_ON: 4310 // do nothing 4311 break; 4312 case HCI_POWER_OFF: 4313 hci_power_enter_halting_state(); 4314 break; 4315 case HCI_POWER_SLEEP: 4316 // see hci_run 4317 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4318 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4319 break; 4320 default: 4321 btstack_assert(false); 4322 break; 4323 } 4324 return ERROR_CODE_SUCCESS; 4325 } 4326 4327 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4328 switch (power_mode){ 4329 case HCI_POWER_ON: 4330 hci_power_enter_initializing_state(); 4331 break; 4332 case HCI_POWER_OFF: 4333 // do nothing 4334 break; 4335 case HCI_POWER_SLEEP: 4336 // see hci_run 4337 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4338 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4339 break; 4340 default: 4341 btstack_assert(false); 4342 break; 4343 } 4344 return ERROR_CODE_SUCCESS; 4345 } 4346 4347 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4348 switch (power_mode){ 4349 case HCI_POWER_ON: 4350 hci_power_enter_initializing_state(); 4351 break; 4352 case HCI_POWER_OFF: 4353 hci_power_enter_halting_state(); 4354 break; 4355 case HCI_POWER_SLEEP: 4356 // do nothing 4357 break; 4358 default: 4359 btstack_assert(false); 4360 break; 4361 } 4362 return ERROR_CODE_SUCCESS; 4363 } 4364 4365 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4366 int err; 4367 switch (power_mode){ 4368 case HCI_POWER_ON: 4369 err = hci_power_control_wake(); 4370 if (err) return err; 4371 hci_power_enter_initializing_state(); 4372 break; 4373 case HCI_POWER_OFF: 4374 hci_power_enter_halting_state(); 4375 break; 4376 case HCI_POWER_SLEEP: 4377 // do nothing 4378 break; 4379 default: 4380 btstack_assert(false); 4381 break; 4382 } 4383 return ERROR_CODE_SUCCESS; 4384 } 4385 4386 int hci_power_control(HCI_POWER_MODE power_mode){ 4387 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4388 int err = 0; 4389 switch (hci_stack->state){ 4390 case HCI_STATE_OFF: 4391 err = hci_power_control_state_off(power_mode); 4392 break; 4393 case HCI_STATE_INITIALIZING: 4394 err = hci_power_control_state_initializing(power_mode); 4395 break; 4396 case HCI_STATE_WORKING: 4397 err = hci_power_control_state_working(power_mode); 4398 break; 4399 case HCI_STATE_HALTING: 4400 err = hci_power_control_state_halting(power_mode); 4401 break; 4402 case HCI_STATE_FALLING_ASLEEP: 4403 err = hci_power_control_state_falling_asleep(power_mode); 4404 break; 4405 case HCI_STATE_SLEEPING: 4406 err = hci_power_control_state_sleeping(power_mode); 4407 break; 4408 default: 4409 btstack_assert(false); 4410 break; 4411 } 4412 if (err != 0){ 4413 return err; 4414 } 4415 4416 // create internal event 4417 hci_emit_state(); 4418 4419 // trigger next/first action 4420 hci_run(); 4421 4422 return 0; 4423 } 4424 4425 4426 static void hci_halting_run(void) { 4427 4428 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4429 4430 hci_connection_t *connection; 4431 #ifdef ENABLE_BLE 4432 #ifdef ENABLE_LE_PERIPHERAL 4433 bool stop_advertismenets; 4434 #endif 4435 #endif 4436 4437 switch (hci_stack->substate) { 4438 case HCI_HALTING_CLASSIC_STOP: 4439 #ifdef ENABLE_CLASSIC 4440 if (!hci_can_send_command_packet_now()) return; 4441 4442 if (hci_stack->connectable || hci_stack->discoverable){ 4443 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4444 hci_send_cmd(&hci_write_scan_enable, 0); 4445 return; 4446 } 4447 #endif 4448 /* fall through */ 4449 4450 case HCI_HALTING_LE_ADV_STOP: 4451 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4452 4453 #ifdef ENABLE_BLE 4454 #ifdef ENABLE_LE_PERIPHERAL 4455 if (!hci_can_send_command_packet_now()) return; 4456 4457 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4458 4459 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4460 if (hci_extended_advertising_supported()){ 4461 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4462 btstack_linked_list_iterator_t it; 4463 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4464 // stop all periodic advertisements and check if an extended set is active 4465 while (btstack_linked_list_iterator_has_next(&it)){ 4466 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4467 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4468 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4469 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4470 return; 4471 } 4472 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4473 stop_advertismenets = true; 4474 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4475 } 4476 } 4477 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4478 if (stop_advertismenets){ 4479 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4480 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4481 return; 4482 } 4483 } 4484 else 4485 #else 4486 { 4487 if (stop_advertismenets) { 4488 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4489 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4490 return; 4491 } 4492 } 4493 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4494 #endif /* ENABLE_LE_PERIPHERAL */ 4495 #endif /* ENABLE_BLE */ 4496 4497 /* fall through */ 4498 4499 case HCI_HALTING_LE_SCAN_STOP: 4500 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4501 if (!hci_can_send_command_packet_now()) return; 4502 4503 #ifdef ENABLE_BLE 4504 #ifdef ENABLE_LE_CENTRAL 4505 if (hci_stack->le_scanning_active){ 4506 hci_le_scan_stop(); 4507 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4508 return; 4509 } 4510 #endif 4511 #endif 4512 4513 /* fall through */ 4514 4515 case HCI_HALTING_DISCONNECT_ALL: 4516 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4517 if (!hci_can_send_command_packet_now()) return; 4518 4519 // close all open connections 4520 connection = (hci_connection_t *) hci_stack->connections; 4521 if (connection) { 4522 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4523 4524 // check state 4525 if (connection->state == SENT_DISCONNECT) return; 4526 connection->state = SENT_DISCONNECT; 4527 4528 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4529 4530 // finally, send the disconnect command 4531 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4532 return; 4533 } 4534 4535 btstack_run_loop_remove_timer(&hci_stack->timeout); 4536 4537 hci_stack->substate = HCI_HALTING_READY_FOR_CLOSE; 4538 4539 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4540 log_info("HCI_STATE_HALTING: wait 50 ms"); 4541 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4542 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4543 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4544 btstack_run_loop_add_timer(&hci_stack->timeout); 4545 break; 4546 4547 case HCI_HALTING_CLOSE: 4548 // close left over connections (that had not been properly closed before) 4549 hci_discard_connections(); 4550 4551 log_info("HCI_STATE_HALTING, calling off"); 4552 4553 // switch mode 4554 hci_power_control_off(); 4555 4556 log_info("HCI_STATE_HALTING, emitting state"); 4557 hci_emit_state(); 4558 log_info("HCI_STATE_HALTING, done"); 4559 break; 4560 4561 case HCI_HALTING_W4_CLOSE_TIMER: 4562 // keep waiting 4563 4564 break; 4565 default: 4566 break; 4567 } 4568 }; 4569 4570 static void hci_falling_asleep_run(void){ 4571 hci_connection_t * connection; 4572 switch(hci_stack->substate) { 4573 case HCI_FALLING_ASLEEP_DISCONNECT: 4574 log_info("HCI_STATE_FALLING_ASLEEP"); 4575 // close all open connections 4576 connection = (hci_connection_t *) hci_stack->connections; 4577 if (connection){ 4578 4579 // send disconnect 4580 if (!hci_can_send_command_packet_now()) return; 4581 4582 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4583 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4584 4585 // send disconnected event right away - causes higher layer connections to get closed, too. 4586 hci_shutdown_connection(connection); 4587 return; 4588 } 4589 4590 if (hci_classic_supported()){ 4591 // disable page and inquiry scan 4592 if (!hci_can_send_command_packet_now()) return; 4593 4594 log_info("HCI_STATE_HALTING, disabling inq scans"); 4595 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4596 4597 // continue in next sub state 4598 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4599 break; 4600 } 4601 4602 /* fall through */ 4603 4604 case HCI_FALLING_ASLEEP_COMPLETE: 4605 log_info("HCI_STATE_HALTING, calling sleep"); 4606 // switch mode 4607 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4608 hci_emit_state(); 4609 break; 4610 4611 default: 4612 break; 4613 } 4614 } 4615 4616 #ifdef ENABLE_CLASSIC 4617 4618 static void hci_update_scan_enable(void){ 4619 // 2 = page scan, 1 = inq scan 4620 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 4621 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 4622 hci_run(); 4623 } 4624 4625 void gap_discoverable_control(uint8_t enable){ 4626 if (enable) enable = 1; // normalize argument 4627 4628 if (hci_stack->discoverable == enable){ 4629 hci_emit_discoverable_enabled(hci_stack->discoverable); 4630 return; 4631 } 4632 4633 hci_stack->discoverable = enable; 4634 hci_update_scan_enable(); 4635 } 4636 4637 void gap_connectable_control(uint8_t enable){ 4638 if (enable) enable = 1; // normalize argument 4639 4640 // don't emit event 4641 if (hci_stack->connectable == enable) return; 4642 4643 hci_stack->connectable = enable; 4644 hci_update_scan_enable(); 4645 } 4646 #endif 4647 4648 void gap_local_bd_addr(bd_addr_t address_buffer){ 4649 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 4650 } 4651 4652 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4653 static void hci_host_num_completed_packets(void){ 4654 4655 // create packet manually as arrays are not supported and num_commands should not get reduced 4656 hci_reserve_packet_buffer(); 4657 uint8_t * packet = hci_get_outgoing_packet_buffer(); 4658 4659 uint16_t size = 0; 4660 uint16_t num_handles = 0; 4661 packet[size++] = 0x35; 4662 packet[size++] = 0x0c; 4663 size++; // skip param len 4664 size++; // skip num handles 4665 4666 // add { handle, packets } entries 4667 btstack_linked_item_t * it; 4668 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 4669 hci_connection_t * connection = (hci_connection_t *) it; 4670 if (connection->num_packets_completed){ 4671 little_endian_store_16(packet, size, connection->con_handle); 4672 size += 2; 4673 little_endian_store_16(packet, size, connection->num_packets_completed); 4674 size += 2; 4675 // 4676 num_handles++; 4677 connection->num_packets_completed = 0; 4678 } 4679 } 4680 4681 packet[2] = size - 3; 4682 packet[3] = num_handles; 4683 4684 hci_stack->host_completed_packets = 0; 4685 4686 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 4687 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 4688 4689 // release packet buffer for synchronous transport implementations 4690 if (hci_transport_synchronous()){ 4691 hci_release_packet_buffer(); 4692 hci_emit_transport_packet_sent(); 4693 } 4694 } 4695 #endif 4696 4697 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 4698 UNUSED(ds); 4699 hci_stack->substate = HCI_HALTING_CLOSE; 4700 // allow packet handlers to defer final shutdown 4701 hci_emit_state(); 4702 hci_run(); 4703 } 4704 4705 static bool hci_run_acl_fragments(void){ 4706 if (hci_stack->acl_fragmentation_total_size > 0u) { 4707 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 4708 hci_connection_t *connection = hci_connection_for_handle(con_handle); 4709 if (connection) { 4710 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 4711 hci_send_acl_packet_fragments(connection); 4712 return true; 4713 } 4714 } else { 4715 // connection gone -> discard further fragments 4716 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 4717 hci_stack->acl_fragmentation_total_size = 0; 4718 hci_stack->acl_fragmentation_pos = 0; 4719 } 4720 } 4721 return false; 4722 } 4723 4724 #ifdef ENABLE_CLASSIC 4725 4726 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4727 static bool hci_classic_operation_active(void) { 4728 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 4729 return true; 4730 } 4731 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 4732 return true; 4733 } 4734 btstack_linked_item_t * it; 4735 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 4736 hci_connection_t *connection = (hci_connection_t *) it; 4737 switch (connection->state) { 4738 case SENT_CREATE_CONNECTION: 4739 case SENT_CANCEL_CONNECTION: 4740 case SENT_DISCONNECT: 4741 return true; 4742 default: 4743 break; 4744 } 4745 } 4746 return false; 4747 } 4748 #endif 4749 4750 static bool hci_run_general_gap_classic(void){ 4751 4752 // assert stack is working and classic is active 4753 if (hci_classic_supported() == false) return false; 4754 if (hci_stack->state != HCI_STATE_WORKING) return false; 4755 4756 // decline incoming connections 4757 if (hci_stack->decline_reason){ 4758 uint8_t reason = hci_stack->decline_reason; 4759 hci_stack->decline_reason = 0; 4760 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 4761 return true; 4762 } 4763 4764 if (hci_stack->gap_tasks_classic != 0){ 4765 hci_run_gap_tasks_classic(); 4766 return true; 4767 } 4768 4769 // start/stop inquiry 4770 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 4771 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4772 if (hci_classic_operation_active() == false) 4773 #endif 4774 { 4775 uint8_t duration = hci_stack->inquiry_state; 4776 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 4777 if (hci_stack->inquiry_max_period_length != 0){ 4778 hci_send_cmd(&hci_periodic_inquiry_mode, hci_stack->inquiry_max_period_length, hci_stack->inquiry_min_period_length, hci_stack->inquiry_lap, duration, 0); 4779 } else { 4780 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 4781 } 4782 return true; 4783 } 4784 } 4785 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 4786 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 4787 hci_send_cmd(&hci_inquiry_cancel); 4788 return true; 4789 } 4790 4791 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 4792 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_EXIT_PERIODIC_COMPLETE; 4793 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 4794 return true; 4795 } 4796 4797 // remote name request 4798 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 4799 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4800 if (hci_classic_operation_active() == false) 4801 #endif 4802 { 4803 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 4804 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 4805 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 4806 return true; 4807 } 4808 } 4809 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4810 // Local OOB data 4811 if (hci_stack->classic_read_local_oob_data){ 4812 hci_stack->classic_read_local_oob_data = false; 4813 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 4814 hci_send_cmd(&hci_read_local_extended_oob_data); 4815 } else { 4816 hci_send_cmd(&hci_read_local_oob_data); 4817 } 4818 } 4819 #endif 4820 // pairing 4821 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 4822 uint8_t state = hci_stack->gap_pairing_state; 4823 uint8_t pin_code[16]; 4824 switch (state){ 4825 case GAP_PAIRING_STATE_SEND_PIN: 4826 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4827 memset(pin_code, 0, 16); 4828 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 4829 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 4830 break; 4831 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 4832 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4833 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 4834 break; 4835 case GAP_PAIRING_STATE_SEND_PASSKEY: 4836 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4837 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 4838 break; 4839 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 4840 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4841 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 4842 break; 4843 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 4844 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4845 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 4846 break; 4847 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 4848 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4849 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 4850 break; 4851 default: 4852 break; 4853 } 4854 return true; 4855 } 4856 return false; 4857 } 4858 #endif 4859 4860 #ifdef ENABLE_BLE 4861 4862 #ifdef ENABLE_LE_CENTRAL 4863 static void hci_le_scan_stop(void){ 4864 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4865 if (hci_extended_advertising_supported()) { 4866 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 4867 } else 4868 #endif 4869 { 4870 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 4871 } 4872 } 4873 #endif 4874 4875 #ifdef ENABLE_LE_PERIPHERAL 4876 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4877 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 4878 uint8_t operation = 0; 4879 if (pos == 0){ 4880 // first fragment or complete data 4881 operation |= 1; 4882 } 4883 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 4884 // last fragment or complete data 4885 operation |= 2; 4886 } 4887 return operation; 4888 } 4889 #endif 4890 #endif 4891 4892 static bool hci_run_general_gap_le(void){ 4893 4894 btstack_linked_list_iterator_t lit; 4895 4896 // Phase 1: collect what to stop 4897 4898 #ifdef ENABLE_LE_CENTRAL 4899 bool scanning_stop = false; 4900 bool connecting_stop = false; 4901 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4902 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4903 bool periodic_sync_stop = false; 4904 #endif 4905 #endif 4906 #endif 4907 4908 #ifdef ENABLE_LE_PERIPHERAL 4909 bool advertising_stop = false; 4910 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4911 le_advertising_set_t * advertising_stop_set = NULL; 4912 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4913 bool periodic_advertising_stop = false; 4914 #endif 4915 #endif 4916 #endif 4917 4918 // check if own address changes 4919 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 4920 4921 // check if whitelist needs modification 4922 bool whitelist_modification_pending = false; 4923 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 4924 while (btstack_linked_list_iterator_has_next(&lit)){ 4925 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 4926 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 4927 whitelist_modification_pending = true; 4928 break; 4929 } 4930 } 4931 4932 // check if resolving list needs modification 4933 bool resolving_list_modification_pending = false; 4934 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4935 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 4936 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 4937 resolving_list_modification_pending = true; 4938 } 4939 #endif 4940 4941 #ifdef ENABLE_LE_CENTRAL 4942 4943 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4944 // check if periodic advertiser list needs modification 4945 bool periodic_list_modification_pending = false; 4946 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 4947 while (btstack_linked_list_iterator_has_next(&lit)){ 4948 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 4949 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 4950 periodic_list_modification_pending = true; 4951 break; 4952 } 4953 } 4954 #endif 4955 4956 // scanning control 4957 if (hci_stack->le_scanning_active) { 4958 // stop if: 4959 // - parameter change required 4960 // - it's disabled 4961 // - whitelist change required but used for scanning 4962 // - resolving list modified 4963 // - own address changes 4964 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 4965 if ((hci_stack->le_scanning_param_update) || 4966 !hci_stack->le_scanning_enabled || 4967 (scanning_uses_whitelist && whitelist_modification_pending) || 4968 resolving_list_modification_pending || 4969 random_address_change){ 4970 4971 scanning_stop = true; 4972 } 4973 } 4974 4975 // connecting control 4976 bool connecting_with_whitelist; 4977 switch (hci_stack->le_connecting_state){ 4978 case LE_CONNECTING_DIRECT: 4979 case LE_CONNECTING_WHITELIST: 4980 // stop connecting if: 4981 // - connecting uses white and whitelist modification pending 4982 // - if it got disabled 4983 // - resolving list modified 4984 // - own address changes 4985 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 4986 if ((connecting_with_whitelist && whitelist_modification_pending) || 4987 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 4988 resolving_list_modification_pending || 4989 random_address_change) { 4990 4991 connecting_stop = true; 4992 } 4993 break; 4994 default: 4995 break; 4996 } 4997 4998 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4999 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5000 // periodic sync control 5001 bool sync_with_advertiser_list; 5002 switch(hci_stack->le_periodic_sync_state){ 5003 case LE_CONNECTING_DIRECT: 5004 case LE_CONNECTING_WHITELIST: 5005 // stop sync if: 5006 // - sync with advertiser list and advertiser list modification pending 5007 // - if it got disabled 5008 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5009 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5010 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5011 periodic_sync_stop = true; 5012 } 5013 break; 5014 default: 5015 break; 5016 } 5017 #endif 5018 #endif 5019 5020 #endif /* ENABLE_LE_CENTRAL */ 5021 5022 #ifdef ENABLE_LE_PERIPHERAL 5023 // le advertisement control 5024 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5025 // stop if: 5026 // - parameter change required 5027 // - random address used in 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 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5033 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5034 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5035 if (advertising_change || 5036 (advertising_uses_random_address && random_address_change) || 5037 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5038 (advertising_uses_whitelist && whitelist_modification_pending) || 5039 resolving_list_modification_pending || 5040 random_address_change) { 5041 5042 advertising_stop = true; 5043 } 5044 } 5045 5046 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5047 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5048 btstack_linked_list_iterator_t it; 5049 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5050 while (btstack_linked_list_iterator_has_next(&it)){ 5051 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5052 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5053 // stop if: 5054 // - parameter change required 5055 // - random address used in connectable advertising and changes 5056 // - it's disabled 5057 // - whitelist change required but used for advertisement filter policy 5058 // - resolving list modified 5059 // - own address changes 5060 // - advertisement set will be removed 5061 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5062 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5063 bool advertising_uses_random_address = 5064 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5065 advertising_connectable; 5066 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5067 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5068 bool advertising_set_random_address_change = 5069 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5070 bool advertising_set_will_be_removed = 5071 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5072 if (advertising_parameter_change || 5073 (advertising_uses_random_address && advertising_set_random_address_change) || 5074 (advertising_enabled == false) || 5075 (advertising_uses_whitelist && whitelist_modification_pending) || 5076 resolving_list_modification_pending || 5077 advertising_set_will_be_removed) { 5078 5079 advertising_stop = true; 5080 advertising_stop_set = advertising_set; 5081 break; 5082 } 5083 } 5084 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5085 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5086 // stop if: 5087 // - it's disabled 5088 // - parameter change required 5089 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5090 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5091 if ((periodic_enabled == false) || periodic_parameter_change){ 5092 periodic_advertising_stop = true; 5093 advertising_stop_set = advertising_set; 5094 } 5095 } 5096 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5097 } 5098 } 5099 #endif 5100 5101 #endif 5102 5103 5104 // Phase 2: stop everything that should be off during modifications 5105 5106 #ifdef ENABLE_LE_CENTRAL 5107 if (scanning_stop){ 5108 hci_stack->le_scanning_active = false; 5109 hci_le_scan_stop(); 5110 return true; 5111 } 5112 5113 if (connecting_stop){ 5114 hci_send_cmd(&hci_le_create_connection_cancel); 5115 return true; 5116 } 5117 5118 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5119 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5120 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5121 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5122 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5123 return true; 5124 } 5125 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5126 if (periodic_sync_stop){ 5127 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5128 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5129 return true; 5130 } 5131 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5132 #endif 5133 #endif 5134 5135 #ifdef ENABLE_LE_PERIPHERAL 5136 if (advertising_stop){ 5137 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5138 if (hci_extended_advertising_supported()) { 5139 uint8_t advertising_stop_handle; 5140 if (advertising_stop_set != NULL){ 5141 advertising_stop_handle = advertising_stop_set->advertising_handle; 5142 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5143 } else { 5144 advertising_stop_handle = 0; 5145 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5146 } 5147 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5148 const uint16_t durations[] = { 0 }; 5149 const uint16_t max_events[] = { 0 }; 5150 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5151 } else 5152 #endif 5153 { 5154 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5155 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5156 } 5157 return true; 5158 } 5159 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5160 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5161 if (periodic_advertising_stop){ 5162 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5163 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5164 return true; 5165 } 5166 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5167 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5168 #endif 5169 5170 // Phase 3: modify 5171 5172 if (random_address_change){ 5173 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5174 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5175 if (hci_extended_advertising_supported()) { 5176 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5177 } 5178 #endif 5179 { 5180 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5181 } 5182 return true; 5183 } 5184 5185 #ifdef ENABLE_LE_CENTRAL 5186 if (hci_stack->le_scanning_param_update){ 5187 hci_stack->le_scanning_param_update = false; 5188 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5189 if (hci_extended_advertising_supported()){ 5190 // prepare arrays for all PHYs 5191 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5192 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5193 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5194 uint8_t scanning_phys = 1; // LE 1M PHY 5195 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5196 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5197 } else 5198 #endif 5199 { 5200 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5201 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5202 } 5203 return true; 5204 } 5205 #endif 5206 5207 #ifdef ENABLE_LE_PERIPHERAL 5208 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5209 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5210 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5211 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5212 if (hci_extended_advertising_supported()){ 5213 // map advertisment type to advertising event properties 5214 uint16_t adv_event_properties = 0; 5215 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5216 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5217 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5218 } 5219 hci_stack->le_advertising_set_in_current_command = 0; 5220 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5221 0, 5222 adv_event_properties, 5223 hci_stack->le_advertisements_interval_min, 5224 hci_stack->le_advertisements_interval_max, 5225 hci_stack->le_advertisements_channel_map, 5226 hci_stack->le_advertisements_own_addr_type, 5227 hci_stack->le_advertisements_direct_address_type, 5228 hci_stack->le_advertisements_direct_address, 5229 hci_stack->le_advertisements_filter_policy, 5230 0x7f, // tx power: no preference 5231 0x01, // primary adv phy: LE 1M 5232 0, // secondary adv max skip 5233 0, // secondary adv phy 5234 0, // adv sid 5235 0 // scan request notification 5236 ); 5237 } 5238 #endif 5239 { 5240 hci_send_cmd(&hci_le_set_advertising_parameters, 5241 hci_stack->le_advertisements_interval_min, 5242 hci_stack->le_advertisements_interval_max, 5243 hci_stack->le_advertisements_type, 5244 hci_stack->le_advertisements_own_addr_type, 5245 hci_stack->le_advertisements_direct_address_type, 5246 hci_stack->le_advertisements_direct_address, 5247 hci_stack->le_advertisements_channel_map, 5248 hci_stack->le_advertisements_filter_policy); 5249 } 5250 return true; 5251 } 5252 5253 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5254 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5255 uint8_t adv_data_clean[31]; 5256 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5257 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5258 hci_stack->le_advertisements_data_len); 5259 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5260 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5261 if (hci_extended_advertising_supported()){ 5262 hci_stack->le_advertising_set_in_current_command = 0; 5263 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5264 } else 5265 #endif 5266 { 5267 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5268 } 5269 return true; 5270 } 5271 5272 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5273 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5274 uint8_t scan_data_clean[31]; 5275 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5276 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5277 hci_stack->le_scan_response_data_len); 5278 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5279 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5280 if (hci_extended_advertising_supported()){ 5281 hci_stack->le_advertising_set_in_current_command = 0; 5282 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5283 } else 5284 #endif 5285 { 5286 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5287 } 5288 return true; 5289 } 5290 5291 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5292 if (hci_extended_advertising_supported()) { 5293 btstack_linked_list_iterator_t it; 5294 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5295 while (btstack_linked_list_iterator_has_next(&it)){ 5296 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5297 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5298 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5299 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5300 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5301 return true; 5302 } 5303 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5304 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5305 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5306 return true; 5307 } 5308 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5309 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5310 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5311 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5312 advertising_set->advertising_handle, 5313 advertising_set->extended_params.advertising_event_properties, 5314 advertising_set->extended_params.primary_advertising_interval_min, 5315 advertising_set->extended_params.primary_advertising_interval_max, 5316 advertising_set->extended_params.primary_advertising_channel_map, 5317 advertising_set->extended_params.own_address_type, 5318 advertising_set->extended_params.peer_address_type, 5319 advertising_set->extended_params.peer_address, 5320 advertising_set->extended_params.advertising_filter_policy, 5321 advertising_set->extended_params.advertising_tx_power, 5322 advertising_set->extended_params.primary_advertising_phy, 5323 advertising_set->extended_params.secondary_advertising_max_skip, 5324 advertising_set->extended_params.secondary_advertising_phy, 5325 advertising_set->extended_params.advertising_sid, 5326 advertising_set->extended_params.scan_request_notification_enable 5327 ); 5328 return true; 5329 } 5330 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5331 uint16_t pos = advertising_set->adv_data_pos; 5332 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5333 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5334 if ((operation & 0x02) != 0){ 5335 // last fragment or complete data 5336 operation |= 2; 5337 advertising_set->adv_data_pos = 0; 5338 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5339 } else { 5340 advertising_set->adv_data_pos += data_to_upload; 5341 } 5342 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5343 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5344 return true; 5345 } 5346 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5347 uint16_t pos = advertising_set->scan_data_pos; 5348 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5349 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5350 if ((operation & 0x02) != 0){ 5351 advertising_set->scan_data_pos = 0; 5352 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5353 } else { 5354 advertising_set->scan_data_pos += data_to_upload; 5355 } 5356 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5357 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5358 return true; 5359 } 5360 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5361 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5362 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5363 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5364 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5365 advertising_set->advertising_handle, 5366 advertising_set->periodic_params.periodic_advertising_interval_min, 5367 advertising_set->periodic_params.periodic_advertising_interval_max, 5368 advertising_set->periodic_params.periodic_advertising_properties); 5369 return true; 5370 } 5371 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5372 uint16_t pos = advertising_set->periodic_data_pos; 5373 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5374 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5375 if ((operation & 0x02) != 0){ 5376 // last fragment or complete data 5377 operation |= 2; 5378 advertising_set->periodic_data_pos = 0; 5379 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5380 } else { 5381 advertising_set->periodic_data_pos += data_to_upload; 5382 } 5383 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5384 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5385 return true; 5386 } 5387 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5388 } 5389 } 5390 #endif 5391 5392 #endif 5393 5394 #ifdef ENABLE_LE_CENTRAL 5395 // if connect with whitelist was active and is not cancelled yet, wait until next time 5396 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5397 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5398 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5399 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5400 #endif 5401 #endif 5402 5403 // LE Whitelist Management 5404 if (whitelist_modification_pending){ 5405 // add/remove entries 5406 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5407 while (btstack_linked_list_iterator_has_next(&lit)){ 5408 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5409 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5410 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5411 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5412 return true; 5413 } 5414 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5415 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5416 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5417 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5418 return true; 5419 } 5420 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5421 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5422 btstack_memory_whitelist_entry_free(entry); 5423 } 5424 } 5425 } 5426 5427 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5428 // LE Resolving List Management 5429 if (resolving_list_supported) { 5430 uint16_t i; 5431 switch (hci_stack->le_resolving_list_state) { 5432 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5433 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5434 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5435 return true; 5436 case LE_RESOLVING_LIST_READ_SIZE: 5437 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5438 hci_send_cmd(&hci_le_read_resolving_list_size); 5439 return true; 5440 case LE_RESOLVING_LIST_SEND_CLEAR: 5441 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5442 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5443 sizeof(hci_stack->le_resolving_list_add_entries)); 5444 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5445 sizeof(hci_stack->le_resolving_list_remove_entries)); 5446 hci_send_cmd(&hci_le_clear_resolving_list); 5447 return true; 5448 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5449 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5450 uint8_t offset = i >> 3; 5451 uint8_t mask = 1 << (i & 7); 5452 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5453 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5454 bd_addr_t peer_identity_addreses; 5455 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5456 sm_key_t peer_irk; 5457 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5458 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5459 5460 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5461 // trigger whitelist entry 'update' (work around for controller bug) 5462 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5463 while (btstack_linked_list_iterator_has_next(&lit)) { 5464 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5465 if (entry->address_type != peer_identity_addr_type) continue; 5466 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5467 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5468 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5469 } 5470 #endif 5471 5472 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5473 peer_identity_addreses); 5474 return true; 5475 } 5476 5477 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5478 5479 /* fall through */ 5480 5481 case LE_RESOLVING_LIST_ADD_ENTRIES: 5482 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5483 uint8_t offset = i >> 3; 5484 uint8_t mask = 1 << (i & 7); 5485 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5486 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5487 bd_addr_t peer_identity_addreses; 5488 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5489 sm_key_t peer_irk; 5490 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5491 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5492 const uint8_t *local_irk = gap_get_persistent_irk(); 5493 // command uses format specifier 'P' that stores 16-byte value without flip 5494 uint8_t local_irk_flipped[16]; 5495 uint8_t peer_irk_flipped[16]; 5496 reverse_128(local_irk, local_irk_flipped); 5497 reverse_128(peer_irk, peer_irk_flipped); 5498 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5499 peer_irk_flipped, local_irk_flipped); 5500 return true; 5501 } 5502 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5503 break; 5504 5505 default: 5506 break; 5507 } 5508 } 5509 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5510 #endif 5511 5512 #ifdef ENABLE_LE_CENTRAL 5513 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5514 // LE Whitelist Management 5515 if (periodic_list_modification_pending){ 5516 // add/remove entries 5517 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5518 while (btstack_linked_list_iterator_has_next(&lit)){ 5519 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5520 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5521 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5522 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5523 return true; 5524 } 5525 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5526 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5527 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5528 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address); 5529 return true; 5530 } 5531 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5532 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5533 btstack_memory_periodic_advertiser_list_entry_free(entry); 5534 } 5535 } 5536 } 5537 #endif 5538 #endif 5539 5540 // post-pone all actions until stack is fully working 5541 if (hci_stack->state != HCI_STATE_WORKING) return false; 5542 5543 // advertisements, active scanning, and creating connections requires random address to be set if using private address 5544 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 5545 5546 // Phase 4: restore state 5547 5548 #ifdef ENABLE_LE_CENTRAL 5549 // re-start scanning 5550 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 5551 hci_stack->le_scanning_active = true; 5552 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5553 if (hci_extended_advertising_supported()){ 5554 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 5555 } else 5556 #endif 5557 { 5558 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 5559 } 5560 return true; 5561 } 5562 #endif 5563 5564 #ifdef ENABLE_LE_CENTRAL 5565 // re-start connecting 5566 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 5567 bd_addr_t null_addr; 5568 memset(null_addr, 0, 6); 5569 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5570 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5571 hci_send_cmd(&hci_le_create_connection, 5572 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 5573 hci_stack->le_connection_scan_window, // scan interval: 30 ms 5574 1, // use whitelist 5575 0, // peer address type 5576 null_addr, // peer bd addr 5577 hci_stack->le_connection_own_addr_type, // our addr type: 5578 hci_stack->le_connection_interval_min, // conn interval min 5579 hci_stack->le_connection_interval_max, // conn interval max 5580 hci_stack->le_connection_latency, // conn latency 5581 hci_stack->le_supervision_timeout, // conn latency 5582 hci_stack->le_minimum_ce_length, // min ce length 5583 hci_stack->le_maximum_ce_length // max ce length 5584 ); 5585 return true; 5586 } 5587 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5588 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 5589 switch(hci_stack->le_periodic_sync_request){ 5590 case LE_CONNECTING_DIRECT: 5591 case LE_CONNECTING_WHITELIST: 5592 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 5593 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 5594 hci_stack->le_periodic_sync_options, 5595 hci_stack->le_periodic_sync_advertising_sid, 5596 hci_stack->le_periodic_sync_advertiser_address_type, 5597 hci_stack->le_periodic_sync_advertiser_address, 5598 hci_stack->le_periodic_sync_skip, 5599 hci_stack->le_periodic_sync_timeout, 5600 hci_stack->le_periodic_sync_cte_type); 5601 return true; 5602 default: 5603 break; 5604 } 5605 } 5606 #endif 5607 #endif 5608 5609 #ifdef ENABLE_LE_PERIPHERAL 5610 // re-start advertising 5611 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5612 // check if advertisements should be enabled given 5613 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5614 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 5615 5616 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5617 if (hci_extended_advertising_supported()){ 5618 const uint8_t advertising_handles[] = { 0 }; 5619 const uint16_t durations[] = { 0 }; 5620 const uint16_t max_events[] = { 0 }; 5621 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5622 } else 5623 #endif 5624 { 5625 hci_send_cmd(&hci_le_set_advertise_enable, 1); 5626 } 5627 return true; 5628 } 5629 5630 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5631 if (hci_extended_advertising_supported()) { 5632 btstack_linked_list_iterator_t it; 5633 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5634 while (btstack_linked_list_iterator_has_next(&it)) { 5635 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 5636 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5637 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5638 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 5639 const uint16_t durations[] = { advertising_set->enable_timeout }; 5640 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 5641 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5642 return true; 5643 } 5644 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5645 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 5646 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5647 uint8_t enable = 1; 5648 if (advertising_set->periodic_include_adi){ 5649 enable |= 2; 5650 } 5651 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 5652 return true; 5653 } 5654 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5655 } 5656 } 5657 #endif 5658 #endif 5659 5660 return false; 5661 } 5662 #endif 5663 5664 static bool hci_run_general_pending_commands(void){ 5665 btstack_linked_item_t * it; 5666 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 5667 hci_connection_t * connection = (hci_connection_t *) it; 5668 5669 switch(connection->state){ 5670 case SEND_CREATE_CONNECTION: 5671 switch(connection->address_type){ 5672 #ifdef ENABLE_CLASSIC 5673 case BD_ADDR_TYPE_ACL: 5674 log_info("sending hci_create_connection"); 5675 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 5676 break; 5677 #endif 5678 default: 5679 #ifdef ENABLE_BLE 5680 #ifdef ENABLE_LE_CENTRAL 5681 log_info("sending hci_le_create_connection"); 5682 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5683 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5684 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5685 if (hci_extended_advertising_supported()) { 5686 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 5687 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 5688 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 5689 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 5690 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 5691 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 5692 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 5693 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 5694 hci_send_cmd(&hci_le_extended_create_connection, 5695 0, // don't use whitelist 5696 hci_stack->le_connection_own_addr_type, // our addr type: 5697 connection->address_type, // peer address type 5698 connection->address, // peer bd addr 5699 1, // initiating PHY - 1M 5700 le_connection_scan_interval, // conn scan interval 5701 le_connection_scan_window, // conn scan windows 5702 le_connection_interval_min, // conn interval min 5703 le_connection_interval_max, // conn interval max 5704 le_connection_latency, // conn latency 5705 le_supervision_timeout, // conn latency 5706 le_minimum_ce_length, // min ce length 5707 le_maximum_ce_length // max ce length 5708 ); } 5709 else 5710 #endif 5711 { 5712 hci_send_cmd(&hci_le_create_connection, 5713 hci_stack->le_connection_scan_interval, // conn scan interval 5714 hci_stack->le_connection_scan_window, // conn scan windows 5715 0, // don't use whitelist 5716 connection->address_type, // peer address type 5717 connection->address, // peer bd addr 5718 hci_stack->le_connection_own_addr_type, // our addr type: 5719 hci_stack->le_connection_interval_min, // conn interval min 5720 hci_stack->le_connection_interval_max, // conn interval max 5721 hci_stack->le_connection_latency, // conn latency 5722 hci_stack->le_supervision_timeout, // conn latency 5723 hci_stack->le_minimum_ce_length, // min ce length 5724 hci_stack->le_maximum_ce_length // max ce length 5725 ); 5726 } 5727 connection->state = SENT_CREATE_CONNECTION; 5728 #endif 5729 #endif 5730 break; 5731 } 5732 return true; 5733 5734 #ifdef ENABLE_CLASSIC 5735 case RECEIVED_CONNECTION_REQUEST: 5736 connection->role = HCI_ROLE_SLAVE; 5737 if (connection->address_type == BD_ADDR_TYPE_ACL){ 5738 log_info("sending hci_accept_connection_request"); 5739 connection->state = ACCEPTED_CONNECTION_REQUEST; 5740 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 5741 return true; 5742 } 5743 break; 5744 #endif 5745 5746 #ifdef ENABLE_BLE 5747 #ifdef ENABLE_LE_CENTRAL 5748 case SEND_CANCEL_CONNECTION: 5749 connection->state = SENT_CANCEL_CONNECTION; 5750 hci_send_cmd(&hci_le_create_connection_cancel); 5751 return true; 5752 #endif 5753 #endif 5754 case SEND_DISCONNECT: 5755 connection->state = SENT_DISCONNECT; 5756 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5757 return true; 5758 5759 default: 5760 break; 5761 } 5762 5763 // no further commands if connection is about to get shut down 5764 if (connection->state == SENT_DISCONNECT) continue; 5765 5766 #ifdef ENABLE_CLASSIC 5767 5768 // Handling link key request requires remote supported features 5769 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 5770 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 5771 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 5772 5773 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 5774 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 5775 if (have_link_key && security_level_sufficient){ 5776 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 5777 } else { 5778 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 5779 } 5780 return true; 5781 } 5782 5783 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 5784 log_info("denying to pin request"); 5785 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 5786 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 5787 return true; 5788 } 5789 5790 // security assessment requires remote features 5791 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 5792 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 5793 hci_ssp_assess_security_on_io_cap_request(connection); 5794 // 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 5795 } 5796 5797 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 5798 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 5799 // set authentication requirements: 5800 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 5801 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 5802 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 5803 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 5804 authreq |= 1; 5805 } 5806 bool bonding = hci_stack->bondable; 5807 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 5808 // if we have received IO Cap Response, we're in responder role 5809 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5810 if (bonding && !remote_bonding){ 5811 log_info("Remote not bonding, dropping local flag"); 5812 bonding = false; 5813 } 5814 } 5815 if (bonding){ 5816 if (connection->bonding_flags & BONDING_DEDICATED){ 5817 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5818 } else { 5819 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5820 } 5821 } 5822 uint8_t have_oob_data = 0; 5823 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5824 if (connection->classic_oob_c_192 != NULL){ 5825 have_oob_data |= 1; 5826 } 5827 if (connection->classic_oob_c_256 != NULL){ 5828 have_oob_data |= 2; 5829 } 5830 #endif 5831 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 5832 return true; 5833 } 5834 5835 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 5836 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 5837 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 5838 return true; 5839 } 5840 5841 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5842 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 5843 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 5844 const uint8_t zero[16] = { 0 }; 5845 const uint8_t * r_192 = zero; 5846 const uint8_t * c_192 = zero; 5847 const uint8_t * r_256 = zero; 5848 const uint8_t * c_256 = zero; 5849 // verify P-256 OOB 5850 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 5851 c_256 = connection->classic_oob_c_256; 5852 if (connection->classic_oob_r_256 != NULL) { 5853 r_256 = connection->classic_oob_r_256; 5854 } 5855 } 5856 // verify P-192 OOB 5857 if ((connection->classic_oob_c_192 != NULL)) { 5858 c_192 = connection->classic_oob_c_192; 5859 if (connection->classic_oob_r_192 != NULL) { 5860 r_192 = connection->classic_oob_r_192; 5861 } 5862 } 5863 5864 // assess security 5865 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 5866 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 5867 if (need_level_4 && !can_reach_level_4){ 5868 log_info("Level 4 required, but not possible -> abort"); 5869 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 5870 // send oob negative reply 5871 c_256 = NULL; 5872 c_192 = NULL; 5873 } 5874 5875 // Reply 5876 if (c_256 != zero) { 5877 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 5878 } else if (c_192 != zero){ 5879 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 5880 } else { 5881 hci_stack->classic_oob_con_handle = connection->con_handle; 5882 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 5883 } 5884 return true; 5885 } 5886 #endif 5887 5888 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 5889 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 5890 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 5891 return true; 5892 } 5893 5894 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 5895 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 5896 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 5897 return true; 5898 } 5899 5900 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 5901 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 5902 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 5903 return true; 5904 } 5905 5906 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 5907 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 5908 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 5909 connection->state = SENT_DISCONNECT; 5910 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5911 return true; 5912 } 5913 5914 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 5915 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 5916 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 5917 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 5918 return true; 5919 } 5920 5921 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 5922 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 5923 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 5924 return true; 5925 } 5926 5927 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 5928 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 5929 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 5930 return true; 5931 } 5932 5933 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 5934 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 5935 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 5936 return true; 5937 } 5938 5939 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 5940 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 5941 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 5942 return true; 5943 } 5944 5945 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 5946 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 5947 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 5948 return true; 5949 } 5950 #endif 5951 5952 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 5953 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 5954 #ifdef ENABLE_CLASSIC 5955 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 5956 #endif 5957 if (connection->state != SENT_DISCONNECT){ 5958 connection->state = SENT_DISCONNECT; 5959 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 5960 return true; 5961 } 5962 } 5963 5964 #ifdef ENABLE_CLASSIC 5965 uint16_t sniff_min_interval; 5966 switch (connection->sniff_min_interval){ 5967 case 0: 5968 break; 5969 case 0xffff: 5970 connection->sniff_min_interval = 0; 5971 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 5972 return true; 5973 default: 5974 sniff_min_interval = connection->sniff_min_interval; 5975 connection->sniff_min_interval = 0; 5976 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 5977 return true; 5978 } 5979 5980 if (connection->sniff_subrating_max_latency != 0xffff){ 5981 uint16_t max_latency = connection->sniff_subrating_max_latency; 5982 connection->sniff_subrating_max_latency = 0; 5983 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 5984 return true; 5985 } 5986 5987 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 5988 uint8_t service_type = (uint8_t) connection->qos_service_type; 5989 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 5990 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); 5991 return true; 5992 } 5993 5994 if (connection->request_role != HCI_ROLE_INVALID){ 5995 hci_role_t role = connection->request_role; 5996 connection->request_role = HCI_ROLE_INVALID; 5997 hci_send_cmd(&hci_switch_role_command, connection->address, role); 5998 return true; 5999 } 6000 #endif 6001 6002 if (connection->gap_connection_tasks != 0){ 6003 #ifdef ENABLE_CLASSIC 6004 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6005 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6006 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6007 return true; 6008 } 6009 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6010 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6011 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6012 return true; 6013 } 6014 #endif 6015 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6016 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6017 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6018 return true; 6019 } 6020 } 6021 6022 #ifdef ENABLE_BLE 6023 switch (connection->le_con_parameter_update_state){ 6024 // response to L2CAP CON PARAMETER UPDATE REQUEST 6025 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6026 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6027 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6028 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6029 0x0000, 0xffff); 6030 return true; 6031 case CON_PARAMETER_UPDATE_REPLY: 6032 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6033 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6034 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6035 0x0000, 0xffff); 6036 return true; 6037 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6038 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6039 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, ERROR_CODE_UNSUPPORTED_LMP_PARAMETER_VALUE_UNSUPPORTED_LL_PARAMETER_VALUE); 6040 return true; 6041 default: 6042 break; 6043 } 6044 if (connection->le_phy_update_all_phys != 0xffu){ 6045 uint8_t all_phys = connection->le_phy_update_all_phys; 6046 connection->le_phy_update_all_phys = 0xff; 6047 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); 6048 return true; 6049 } 6050 #endif 6051 } 6052 return false; 6053 } 6054 6055 static void hci_run(void){ 6056 6057 // stack state sub statemachines 6058 // halting needs to be called even if we cannot send command packet now 6059 switch (hci_stack->state) { 6060 case HCI_STATE_INITIALIZING: 6061 hci_initializing_run(); 6062 return; 6063 case HCI_STATE_HALTING: 6064 hci_halting_run(); 6065 return; 6066 case HCI_STATE_FALLING_ASLEEP: 6067 hci_falling_asleep_run(); 6068 return; 6069 default: 6070 break; 6071 } 6072 6073 bool done; 6074 6075 // send continuation fragments first, as they block the prepared packet buffer 6076 done = hci_run_acl_fragments(); 6077 if (done) return; 6078 6079 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6080 // send host num completed packets next as they don't require num_cmd_packets > 0 6081 if (!hci_can_send_comand_packet_transport()) return; 6082 if (hci_stack->host_completed_packets){ 6083 hci_host_num_completed_packets(); 6084 return; 6085 } 6086 #endif 6087 6088 if (!hci_can_send_command_packet_now()) return; 6089 6090 // global/non-connection oriented commands 6091 6092 6093 #ifdef ENABLE_CLASSIC 6094 // general gap classic 6095 done = hci_run_general_gap_classic(); 6096 if (done) return; 6097 #endif 6098 6099 #ifdef ENABLE_BLE 6100 // general gap le 6101 done = hci_run_general_gap_le(); 6102 if (done) return; 6103 #endif 6104 6105 // send pending HCI commands 6106 hci_run_general_pending_commands(); 6107 } 6108 6109 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6110 // house-keeping 6111 6112 #ifdef ENABLE_CLASSIC 6113 bd_addr_t addr; 6114 hci_connection_t * conn; 6115 #endif 6116 #ifdef ENABLE_LE_CENTRAL 6117 uint8_t initiator_filter_policy; 6118 #endif 6119 6120 uint16_t opcode = little_endian_read_16(packet, 0); 6121 switch (opcode) { 6122 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6123 hci_stack->loopback_mode = packet[3]; 6124 break; 6125 6126 #ifdef ENABLE_CLASSIC 6127 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6128 reverse_bd_addr(&packet[3], addr); 6129 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6130 6131 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6132 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6133 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6134 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6135 } 6136 6137 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6138 if (!conn) { 6139 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6140 if (!conn) { 6141 // notify client that alloc failed 6142 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6143 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6144 } 6145 conn->state = SEND_CREATE_CONNECTION; 6146 conn->role = HCI_ROLE_MASTER; 6147 } 6148 6149 log_info("conn state %u", conn->state); 6150 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6151 switch (conn->state) { 6152 // if connection active exists 6153 case OPEN: 6154 // and OPEN, emit connection complete command 6155 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6156 // packet not sent to controller 6157 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6158 case RECEIVED_DISCONNECTION_COMPLETE: 6159 // create connection triggered in disconnect complete event, let's do it now 6160 break; 6161 case SEND_CREATE_CONNECTION: 6162 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6163 if (hci_classic_operation_active()){ 6164 return ERROR_CODE_SUCCESS; 6165 } 6166 #endif 6167 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6168 break; 6169 default: 6170 // otherwise, just ignore as it is already in the open process 6171 // packet not sent to controller 6172 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6173 } 6174 conn->state = SENT_CREATE_CONNECTION; 6175 6176 // track outgoing connection 6177 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6178 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6179 break; 6180 6181 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6182 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6183 // setup_synchronous_connection? Voice setting at offset 22 6184 // TODO: compare to current setting if sco connection already active 6185 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6186 break; 6187 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6188 // accept_synchronous_connection? Voice setting at offset 18 6189 // TODO: compare to current setting if sco connection already active 6190 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6191 // track outgoing connection 6192 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6193 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6194 break; 6195 #endif 6196 #endif 6197 6198 #ifdef ENABLE_BLE 6199 #ifdef ENABLE_LE_CENTRAL 6200 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6201 // white list used? 6202 initiator_filter_policy = packet[7]; 6203 switch (initiator_filter_policy) { 6204 case 0: 6205 // whitelist not used 6206 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6207 break; 6208 case 1: 6209 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6210 break; 6211 default: 6212 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6213 break; 6214 } 6215 // track outgoing connection 6216 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6217 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6218 break; 6219 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6220 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6221 break; 6222 #endif 6223 #endif 6224 default: 6225 break; 6226 } 6227 6228 hci_stack->num_cmd_packets--; 6229 6230 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6231 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6232 if (err != 0){ 6233 return ERROR_CODE_HARDWARE_FAILURE; 6234 } 6235 return ERROR_CODE_SUCCESS; 6236 } 6237 6238 // disconnect because of security block 6239 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6240 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6241 if (!connection) return; 6242 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6243 } 6244 6245 6246 // Configure Secure Simple Pairing 6247 6248 #ifdef ENABLE_CLASSIC 6249 6250 // enable will enable SSP during init 6251 void gap_ssp_set_enable(int enable){ 6252 hci_stack->ssp_enable = enable; 6253 } 6254 6255 static int hci_local_ssp_activated(void){ 6256 return gap_ssp_supported() && hci_stack->ssp_enable; 6257 } 6258 6259 // if set, BTstack will respond to io capability request using authentication requirement 6260 void gap_ssp_set_io_capability(int io_capability){ 6261 hci_stack->ssp_io_capability = io_capability; 6262 } 6263 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6264 hci_stack->ssp_authentication_requirement = authentication_requirement; 6265 } 6266 6267 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6268 void gap_ssp_set_auto_accept(int auto_accept){ 6269 hci_stack->ssp_auto_accept = auto_accept; 6270 } 6271 6272 void gap_secure_connections_enable(bool enable){ 6273 hci_stack->secure_connections_enable = enable; 6274 } 6275 bool gap_secure_connections_active(void){ 6276 return hci_stack->secure_connections_active; 6277 } 6278 6279 #endif 6280 6281 // va_list part of hci_send_cmd 6282 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6283 if (!hci_can_send_command_packet_now()){ 6284 log_error("hci_send_cmd called but cannot send packet now"); 6285 return ERROR_CODE_COMMAND_DISALLOWED; 6286 } 6287 6288 // for HCI INITIALIZATION 6289 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6290 hci_stack->last_cmd_opcode = cmd->opcode; 6291 6292 hci_reserve_packet_buffer(); 6293 uint8_t * packet = hci_stack->hci_packet_buffer; 6294 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6295 uint8_t status = hci_send_cmd_packet(packet, size); 6296 6297 // release packet buffer on error or for synchronous transport implementations 6298 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6299 hci_release_packet_buffer(); 6300 hci_emit_transport_packet_sent(); 6301 } 6302 6303 return status; 6304 } 6305 6306 /** 6307 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6308 */ 6309 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6310 va_list argptr; 6311 va_start(argptr, cmd); 6312 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6313 va_end(argptr); 6314 return status; 6315 } 6316 6317 // Create various non-HCI events. 6318 // TODO: generalize, use table similar to hci_create_command 6319 6320 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6321 // dump packet 6322 if (dump) { 6323 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6324 } 6325 6326 // dispatch to all event handlers 6327 btstack_linked_list_iterator_t it; 6328 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6329 while (btstack_linked_list_iterator_has_next(&it)){ 6330 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6331 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6332 } 6333 } 6334 6335 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6336 if (!hci_stack->acl_packet_handler) return; 6337 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6338 } 6339 6340 #ifdef ENABLE_CLASSIC 6341 static void hci_notify_if_sco_can_send_now(void){ 6342 // notify SCO sender if waiting 6343 if (!hci_stack->sco_waiting_for_can_send_now) return; 6344 if (hci_can_send_sco_packet_now()){ 6345 hci_stack->sco_waiting_for_can_send_now = 0; 6346 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6347 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6348 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6349 } 6350 } 6351 6352 // parsing end emitting has been merged to reduce code size 6353 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6354 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6355 6356 uint8_t * eir_data; 6357 ad_context_t context; 6358 const uint8_t * name; 6359 uint8_t name_len; 6360 6361 if (size < 3) return; 6362 6363 int event_type = hci_event_packet_get_type(packet); 6364 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6365 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6366 6367 switch (event_type){ 6368 case HCI_EVENT_INQUIRY_RESULT: 6369 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6370 if (size != (3 + (num_responses * 14))) return; 6371 break; 6372 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6373 if (size != 257) return; 6374 if (num_responses != 1) return; 6375 break; 6376 default: 6377 return; 6378 } 6379 6380 // event[1] is set at the end 6381 int i; 6382 for (i=0; i<num_responses;i++){ 6383 memset(event, 0, sizeof(event)); 6384 event[0] = GAP_EVENT_INQUIRY_RESULT; 6385 uint8_t event_size = 27; // if name is not set by EIR 6386 6387 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6388 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6389 (void)memcpy(&event[9], 6390 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6391 3); // class of device 6392 (void)memcpy(&event[12], 6393 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6394 2); // clock offset 6395 6396 switch (event_type){ 6397 case HCI_EVENT_INQUIRY_RESULT: 6398 // 14,15,16,17 = 0, size 18 6399 break; 6400 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6401 event[14] = 1; 6402 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6403 // 16,17 = 0, size 18 6404 break; 6405 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6406 event[14] = 1; 6407 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6408 // EIR packets only contain a single inquiry response 6409 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 6410 name = NULL; 6411 // Iterate over EIR data 6412 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 6413 uint8_t data_type = ad_iterator_get_data_type(&context); 6414 uint8_t data_size = ad_iterator_get_data_len(&context); 6415 const uint8_t * data = ad_iterator_get_data(&context); 6416 // Prefer Complete Local Name over Shortened Local Name 6417 switch (data_type){ 6418 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 6419 if (name) continue; 6420 /* fall through */ 6421 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 6422 name = data; 6423 name_len = data_size; 6424 break; 6425 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 6426 if (data_size != 8) break; 6427 event[16] = 1; 6428 memcpy(&event[17], data, 8); 6429 break; 6430 default: 6431 break; 6432 } 6433 } 6434 if (name){ 6435 event[25] = 1; 6436 // truncate name if needed 6437 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 6438 event[26] = len; 6439 (void)memcpy(&event[27], name, len); 6440 event_size += len; 6441 } 6442 break; 6443 default: 6444 return; 6445 } 6446 event[1] = event_size - 2; 6447 hci_emit_event(event, event_size, 1); 6448 } 6449 } 6450 #endif 6451 6452 void hci_emit_state(void){ 6453 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 6454 uint8_t event[3]; 6455 event[0] = BTSTACK_EVENT_STATE; 6456 event[1] = sizeof(event) - 2u; 6457 event[2] = hci_stack->state; 6458 hci_emit_event(event, sizeof(event), 1); 6459 } 6460 6461 #ifdef ENABLE_CLASSIC 6462 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6463 uint8_t event[13]; 6464 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 6465 event[1] = sizeof(event) - 2; 6466 event[2] = status; 6467 little_endian_store_16(event, 3, con_handle); 6468 reverse_bd_addr(address, &event[5]); 6469 event[11] = 1; // ACL connection 6470 event[12] = 0; // encryption disabled 6471 hci_emit_event(event, sizeof(event), 1); 6472 } 6473 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 6474 if (disable_l2cap_timeouts) return; 6475 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 6476 uint8_t event[4]; 6477 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 6478 event[1] = sizeof(event) - 2; 6479 little_endian_store_16(event, 2, conn->con_handle); 6480 hci_emit_event(event, sizeof(event), 1); 6481 } 6482 #endif 6483 6484 #ifdef ENABLE_BLE 6485 #ifdef ENABLE_LE_CENTRAL 6486 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){ 6487 uint8_t event[21]; 6488 event[0] = HCI_EVENT_LE_META; 6489 event[1] = sizeof(event) - 2u; 6490 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 6491 event[3] = status; 6492 little_endian_store_16(event, 4, con_handle); 6493 event[6] = 0; // TODO: role 6494 event[7] = address_type; 6495 reverse_bd_addr(address, &event[8]); 6496 little_endian_store_16(event, 14, 0); // interval 6497 little_endian_store_16(event, 16, 0); // latency 6498 little_endian_store_16(event, 18, 0); // supervision timeout 6499 event[20] = 0; // master clock accuracy 6500 hci_emit_event(event, sizeof(event), 1); 6501 } 6502 #endif 6503 #endif 6504 6505 static void hci_emit_transport_packet_sent(void){ 6506 // notify upper stack that it might be possible to send again 6507 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 6508 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 6509 } 6510 6511 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 6512 uint8_t event[6]; 6513 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 6514 event[1] = sizeof(event) - 2u; 6515 event[2] = 0; // status = OK 6516 little_endian_store_16(event, 3, con_handle); 6517 event[5] = reason; 6518 hci_emit_event(event, sizeof(event), 1); 6519 } 6520 6521 static void hci_emit_nr_connections_changed(void){ 6522 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 6523 uint8_t event[3]; 6524 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 6525 event[1] = sizeof(event) - 2u; 6526 event[2] = nr_hci_connections(); 6527 hci_emit_event(event, sizeof(event), 1); 6528 } 6529 6530 static void hci_emit_hci_open_failed(void){ 6531 log_info("BTSTACK_EVENT_POWERON_FAILED"); 6532 uint8_t event[2]; 6533 event[0] = BTSTACK_EVENT_POWERON_FAILED; 6534 event[1] = sizeof(event) - 2u; 6535 hci_emit_event(event, sizeof(event), 1); 6536 } 6537 6538 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 6539 log_info("hci_emit_dedicated_bonding_result %u ", status); 6540 uint8_t event[9]; 6541 int pos = 0; 6542 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 6543 event[pos++] = sizeof(event) - 2u; 6544 event[pos++] = status; 6545 reverse_bd_addr(address, &event[pos]); 6546 hci_emit_event(event, sizeof(event), 1); 6547 } 6548 6549 6550 #ifdef ENABLE_CLASSIC 6551 6552 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 6553 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 6554 uint8_t event[5]; 6555 int pos = 0; 6556 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 6557 event[pos++] = sizeof(event) - 2; 6558 little_endian_store_16(event, 2, con_handle); 6559 pos += 2; 6560 event[pos++] = level; 6561 hci_emit_event(event, sizeof(event), 1); 6562 } 6563 6564 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 6565 if (!connection) return LEVEL_0; 6566 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 6567 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 6568 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 6569 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 6570 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 6571 // LEVEL 4 always requires 128 bit encrytion key size 6572 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 6573 security_level = LEVEL_3; 6574 } 6575 return security_level; 6576 } 6577 6578 static void hci_emit_discoverable_enabled(uint8_t enabled){ 6579 log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled); 6580 uint8_t event[3]; 6581 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 6582 event[1] = sizeof(event) - 2; 6583 event[2] = enabled; 6584 hci_emit_event(event, sizeof(event), 1); 6585 } 6586 6587 // query if remote side supports eSCO 6588 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 6589 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6590 if (!connection) return false; 6591 return (connection->remote_supported_features[0] & 1) != 0; 6592 } 6593 6594 static bool hci_ssp_supported(hci_connection_t * connection){ 6595 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 6596 return (connection->bonding_flags & mask) == mask; 6597 } 6598 6599 // query if remote side supports SSP 6600 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 6601 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6602 if (!connection) return false; 6603 return hci_ssp_supported(connection) ? 1 : 0; 6604 } 6605 6606 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 6607 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 6608 } 6609 6610 /** 6611 * Check if remote supported features query has completed 6612 */ 6613 bool hci_remote_features_available(hci_con_handle_t handle){ 6614 hci_connection_t * connection = hci_connection_for_handle(handle); 6615 if (!connection) return false; 6616 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 6617 } 6618 6619 /** 6620 * Trigger remote supported features query 6621 */ 6622 6623 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 6624 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 6625 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6626 } 6627 } 6628 6629 void hci_remote_features_query(hci_con_handle_t con_handle){ 6630 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6631 if (!connection) return; 6632 hci_trigger_remote_features_for_connection(connection); 6633 hci_run(); 6634 } 6635 6636 // GAP API 6637 /** 6638 * @bbrief enable/disable bonding. default is enabled 6639 * @praram enabled 6640 */ 6641 void gap_set_bondable_mode(int enable){ 6642 hci_stack->bondable = enable ? 1 : 0; 6643 } 6644 /** 6645 * @brief Get bondable mode. 6646 * @return 1 if bondable 6647 */ 6648 int gap_get_bondable_mode(void){ 6649 return hci_stack->bondable; 6650 } 6651 6652 /** 6653 * @brief map link keys to security levels 6654 */ 6655 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 6656 switch (link_key_type){ 6657 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6658 return LEVEL_4; 6659 case COMBINATION_KEY: 6660 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6661 return LEVEL_3; 6662 default: 6663 return LEVEL_2; 6664 } 6665 } 6666 6667 /** 6668 * @brief map link keys to secure connection yes/no 6669 */ 6670 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 6671 switch (link_key_type){ 6672 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6673 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6674 return true; 6675 default: 6676 return false; 6677 } 6678 } 6679 6680 /** 6681 * @brief map link keys to authenticated 6682 */ 6683 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 6684 switch (link_key_type){ 6685 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6686 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6687 return true; 6688 default: 6689 return false; 6690 } 6691 } 6692 6693 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 6694 log_info("gap_mitm_protection_required_for_security_level %u", level); 6695 return level > LEVEL_2; 6696 } 6697 6698 /** 6699 * @brief get current security level 6700 */ 6701 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 6702 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6703 if (!connection) return LEVEL_0; 6704 return gap_security_level_for_connection(connection); 6705 } 6706 6707 /** 6708 * @brief request connection to device to 6709 * @result GAP_AUTHENTICATION_RESULT 6710 */ 6711 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 6712 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6713 if (!connection){ 6714 hci_emit_security_level(con_handle, LEVEL_0); 6715 return; 6716 } 6717 6718 btstack_assert(hci_is_le_connection(connection) == false); 6719 6720 // 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) 6721 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 6722 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 6723 requested_level = LEVEL_4; 6724 } 6725 6726 gap_security_level_t current_level = gap_security_level(con_handle); 6727 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 6728 requested_level, connection->requested_security_level, current_level); 6729 6730 // authentication active if authentication request was sent or planned level > 0 6731 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 6732 if (authentication_active){ 6733 // authentication already active 6734 if (connection->requested_security_level < requested_level){ 6735 // increase requested level as new level is higher 6736 // TODO: handle re-authentication when done 6737 connection->requested_security_level = requested_level; 6738 } 6739 } else { 6740 // no request active, notify if security sufficient 6741 if (requested_level <= current_level){ 6742 hci_emit_security_level(con_handle, current_level); 6743 return; 6744 } 6745 6746 // store request 6747 connection->requested_security_level = requested_level; 6748 6749 // request remote features if not already active 6750 hci_remote_features_query(con_handle); 6751 6752 // start to authenticate connection 6753 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 6754 hci_run(); 6755 } 6756 } 6757 6758 /** 6759 * @brief start dedicated bonding with device. disconnect after bonding 6760 * @param device 6761 * @param request MITM protection 6762 * @result GAP_DEDICATED_BONDING_COMPLETE 6763 */ 6764 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 6765 6766 // create connection state machine 6767 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 6768 6769 if (!connection){ 6770 return BTSTACK_MEMORY_ALLOC_FAILED; 6771 } 6772 6773 // delete linkn key 6774 gap_drop_link_key_for_bd_addr(device); 6775 6776 // configure LEVEL_2/3, dedicated bonding 6777 connection->state = SEND_CREATE_CONNECTION; 6778 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 6779 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 6780 connection->bonding_flags = BONDING_DEDICATED; 6781 6782 // wait for GAP Security Result and send GAP Dedicated Bonding complete 6783 6784 // handle: connnection failure (connection complete != ok) 6785 // handle: authentication failure 6786 // handle: disconnect on done 6787 6788 hci_run(); 6789 6790 return 0; 6791 } 6792 6793 void gap_set_local_name(const char * local_name){ 6794 hci_stack->local_name = local_name; 6795 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 6796 // also update EIR if not set by user 6797 if (hci_stack->eir_data == NULL){ 6798 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 6799 } 6800 hci_run(); 6801 } 6802 #endif 6803 6804 6805 #ifdef ENABLE_BLE 6806 6807 #ifdef ENABLE_LE_CENTRAL 6808 void gap_start_scan(void){ 6809 hci_stack->le_scanning_enabled = true; 6810 hci_run(); 6811 } 6812 6813 void gap_stop_scan(void){ 6814 hci_stack->le_scanning_enabled = false; 6815 hci_run(); 6816 } 6817 6818 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 6819 hci_stack->le_scan_type = scan_type; 6820 hci_stack->le_scan_filter_policy = scanning_filter_policy; 6821 hci_stack->le_scan_interval = scan_interval; 6822 hci_stack->le_scan_window = scan_window; 6823 hci_stack->le_scanning_param_update = true; 6824 hci_run(); 6825 } 6826 6827 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 6828 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 6829 } 6830 6831 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 6832 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 6833 if (!conn){ 6834 // disallow if le connection is already outgoing 6835 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 6836 log_error("le connection already active"); 6837 return ERROR_CODE_COMMAND_DISALLOWED; 6838 } 6839 6840 log_info("gap_connect: no connection exists yet, creating context"); 6841 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 6842 if (!conn){ 6843 // notify client that alloc failed 6844 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6845 log_info("gap_connect: failed to alloc hci_connection_t"); 6846 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 6847 } 6848 6849 // set le connecting state 6850 if (hci_is_le_connection_type(addr_type)){ 6851 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 6852 } 6853 6854 conn->state = SEND_CREATE_CONNECTION; 6855 log_info("gap_connect: send create connection next"); 6856 hci_run(); 6857 return ERROR_CODE_SUCCESS; 6858 } 6859 6860 if (!hci_is_le_connection(conn) || 6861 (conn->state == SEND_CREATE_CONNECTION) || 6862 (conn->state == SENT_CREATE_CONNECTION)) { 6863 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 6864 log_error("gap_connect: classic connection or connect is already being created"); 6865 return GATT_CLIENT_IN_WRONG_STATE; 6866 } 6867 6868 // check if connection was just disconnected 6869 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 6870 log_info("gap_connect: send create connection (again)"); 6871 conn->state = SEND_CREATE_CONNECTION; 6872 hci_run(); 6873 return ERROR_CODE_SUCCESS; 6874 } 6875 6876 log_info("gap_connect: context exists with state %u", conn->state); 6877 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 6878 hci_run(); 6879 return ERROR_CODE_SUCCESS; 6880 } 6881 6882 // @assumption: only a single outgoing LE Connection exists 6883 static hci_connection_t * gap_get_outgoing_connection(void){ 6884 btstack_linked_item_t *it; 6885 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6886 hci_connection_t * conn = (hci_connection_t *) it; 6887 if (!hci_is_le_connection(conn)) continue; 6888 switch (conn->state){ 6889 case SEND_CREATE_CONNECTION: 6890 case SENT_CREATE_CONNECTION: 6891 case SENT_CANCEL_CONNECTION: 6892 return conn; 6893 default: 6894 break; 6895 }; 6896 } 6897 return NULL; 6898 } 6899 6900 uint8_t gap_connect_cancel(void){ 6901 hci_connection_t * conn = gap_get_outgoing_connection(); 6902 if (!conn) return 0; 6903 switch (conn->state){ 6904 case SEND_CREATE_CONNECTION: 6905 // skip sending create connection and emit event instead 6906 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 6907 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 6908 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 6909 btstack_memory_hci_connection_free( conn ); 6910 break; 6911 case SENT_CREATE_CONNECTION: 6912 // request to send cancel connection 6913 conn->state = SEND_CANCEL_CONNECTION; 6914 hci_run(); 6915 break; 6916 default: 6917 break; 6918 } 6919 return 0; 6920 } 6921 6922 /** 6923 * @brief Set connection parameters for outgoing connections 6924 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 6925 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 6926 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 6927 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 6928 * @param conn_latency, default: 4 6929 * @param supervision_timeout (unit: 10ms), default: 720 ms 6930 * @param min_ce_length (unit: 0.625ms), default: 10 ms 6931 * @param max_ce_length (unit: 0.625ms), default: 30 ms 6932 */ 6933 6934 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 6935 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 6936 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 6937 hci_stack->le_connection_scan_interval = conn_scan_interval; 6938 hci_stack->le_connection_scan_window = conn_scan_window; 6939 hci_stack->le_connection_interval_min = conn_interval_min; 6940 hci_stack->le_connection_interval_max = conn_interval_max; 6941 hci_stack->le_connection_latency = conn_latency; 6942 hci_stack->le_supervision_timeout = supervision_timeout; 6943 hci_stack->le_minimum_ce_length = min_ce_length; 6944 hci_stack->le_maximum_ce_length = max_ce_length; 6945 } 6946 #endif 6947 6948 /** 6949 * @brief Updates the connection parameters for a given LE connection 6950 * @param handle 6951 * @param conn_interval_min (unit: 1.25ms) 6952 * @param conn_interval_max (unit: 1.25ms) 6953 * @param conn_latency 6954 * @param supervision_timeout (unit: 10ms) 6955 * @return 0 if ok 6956 */ 6957 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 6958 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 6959 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6960 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 6961 connection->le_conn_interval_min = conn_interval_min; 6962 connection->le_conn_interval_max = conn_interval_max; 6963 connection->le_conn_latency = conn_latency; 6964 connection->le_supervision_timeout = supervision_timeout; 6965 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 6966 hci_run(); 6967 return 0; 6968 } 6969 6970 /** 6971 * @brief Request an update of the connection parameter for a given LE connection 6972 * @param handle 6973 * @param conn_interval_min (unit: 1.25ms) 6974 * @param conn_interval_max (unit: 1.25ms) 6975 * @param conn_latency 6976 * @param supervision_timeout (unit: 10ms) 6977 * @return 0 if ok 6978 */ 6979 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 6980 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 6981 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6982 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 6983 connection->le_conn_interval_min = conn_interval_min; 6984 connection->le_conn_interval_max = conn_interval_max; 6985 connection->le_conn_latency = conn_latency; 6986 connection->le_supervision_timeout = supervision_timeout; 6987 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 6988 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 6989 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 6990 return 0; 6991 } 6992 6993 #ifdef ENABLE_LE_PERIPHERAL 6994 6995 /** 6996 * @brief Set Advertisement Data 6997 * @param advertising_data_length 6998 * @param advertising_data (max 31 octets) 6999 * @note data is not copied, pointer has to stay valid 7000 */ 7001 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7002 hci_stack->le_advertisements_data_len = advertising_data_length; 7003 hci_stack->le_advertisements_data = advertising_data; 7004 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7005 hci_run(); 7006 } 7007 7008 /** 7009 * @brief Set Scan Response Data 7010 * @param advertising_data_length 7011 * @param advertising_data (max 31 octets) 7012 * @note data is not copied, pointer has to stay valid 7013 */ 7014 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7015 hci_stack->le_scan_response_data_len = scan_response_data_length; 7016 hci_stack->le_scan_response_data = scan_response_data; 7017 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7018 hci_run(); 7019 } 7020 7021 /** 7022 * @brief Set Advertisement Parameters 7023 * @param adv_int_min 7024 * @param adv_int_max 7025 * @param adv_type 7026 * @param direct_address_type 7027 * @param direct_address 7028 * @param channel_map 7029 * @param filter_policy 7030 * 7031 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7032 */ 7033 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7034 uint8_t direct_address_typ, bd_addr_t direct_address, 7035 uint8_t channel_map, uint8_t filter_policy) { 7036 7037 hci_stack->le_advertisements_interval_min = adv_int_min; 7038 hci_stack->le_advertisements_interval_max = adv_int_max; 7039 hci_stack->le_advertisements_type = adv_type; 7040 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7041 hci_stack->le_advertisements_channel_map = channel_map; 7042 hci_stack->le_advertisements_filter_policy = filter_policy; 7043 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7044 6); 7045 7046 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7047 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7048 hci_run(); 7049 } 7050 7051 /** 7052 * @brief Enable/Disable Advertisements 7053 * @param enabled 7054 */ 7055 void gap_advertisements_enable(int enabled){ 7056 if (enabled == 0){ 7057 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7058 } else { 7059 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7060 } 7061 hci_update_advertisements_enabled_for_current_roles(); 7062 hci_run(); 7063 } 7064 7065 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7066 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7067 btstack_linked_list_iterator_t it; 7068 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7069 while (btstack_linked_list_iterator_has_next(&it)){ 7070 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7071 if ( item->advertising_handle == advertising_handle ) { 7072 return item; 7073 } 7074 } 7075 return NULL; 7076 } 7077 7078 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7079 // find free advertisement handle 7080 uint8_t advertisement_handle; 7081 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7082 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7083 } 7084 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7085 // clear 7086 memset(storage, 0, sizeof(le_advertising_set_t)); 7087 // copy params 7088 storage->advertising_handle = advertisement_handle; 7089 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7090 // add to list 7091 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7092 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7093 *out_advertising_handle = advertisement_handle; 7094 // set tasks and start 7095 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7096 hci_run(); 7097 return ERROR_CODE_SUCCESS; 7098 } 7099 7100 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7101 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7102 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7103 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7104 // set tasks and start 7105 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7106 hci_run(); 7107 return ERROR_CODE_SUCCESS; 7108 } 7109 7110 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7111 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7112 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7113 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7114 return ERROR_CODE_SUCCESS; 7115 } 7116 7117 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7118 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7119 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7120 memcpy(advertising_set->random_address, random_address, 6); 7121 // set tasks and start 7122 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7123 hci_run(); 7124 return ERROR_CODE_SUCCESS; 7125 } 7126 7127 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7128 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7129 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7130 advertising_set->adv_data = advertising_data; 7131 advertising_set->adv_data_len = advertising_data_length; 7132 // set tasks and start 7133 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7134 hci_run(); 7135 return ERROR_CODE_SUCCESS; 7136 } 7137 7138 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){ 7139 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7140 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7141 advertising_set->scan_data = scan_response_data; 7142 advertising_set->scan_data_len = scan_response_data_length; 7143 // set tasks and start 7144 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7145 hci_run(); 7146 return ERROR_CODE_SUCCESS; 7147 } 7148 7149 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7150 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7151 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7152 advertising_set->enable_timeout = timeout; 7153 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7154 // set tasks and start 7155 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7156 hci_run(); 7157 return ERROR_CODE_SUCCESS; 7158 } 7159 7160 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7161 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7162 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7163 // set tasks and start 7164 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7165 hci_run(); 7166 return ERROR_CODE_SUCCESS; 7167 } 7168 7169 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7170 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7171 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7172 // set tasks and start 7173 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7174 hci_run(); 7175 return ERROR_CODE_SUCCESS; 7176 } 7177 7178 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7179 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7180 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7181 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7182 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7183 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7184 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7185 // set tasks and start 7186 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7187 hci_run(); 7188 return ERROR_CODE_SUCCESS; 7189 } 7190 7191 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7192 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7193 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7194 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7195 return ERROR_CODE_SUCCESS; 7196 } 7197 7198 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7199 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7200 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7201 advertising_set->periodic_data = periodic_data; 7202 advertising_set->periodic_data_len = periodic_data_length; 7203 // set tasks and start 7204 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7205 hci_run(); 7206 return ERROR_CODE_SUCCESS; 7207 } 7208 7209 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7210 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7211 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7212 // set tasks and start 7213 advertising_set->periodic_include_adi = include_adi; 7214 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7215 hci_run(); 7216 return ERROR_CODE_SUCCESS; 7217 } 7218 7219 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7220 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7221 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7222 // set tasks and start 7223 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7224 hci_run(); 7225 return ERROR_CODE_SUCCESS; 7226 } 7227 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7228 7229 #endif 7230 7231 #endif 7232 7233 void hci_le_set_own_address_type(uint8_t own_address_type){ 7234 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7235 if (own_address_type == hci_stack->le_own_addr_type) return; 7236 hci_stack->le_own_addr_type = own_address_type; 7237 7238 #ifdef ENABLE_LE_PERIPHERAL 7239 // update advertisement parameters, too 7240 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7241 hci_run(); 7242 #endif 7243 #ifdef ENABLE_LE_CENTRAL 7244 // note: we don't update scan parameters or modify ongoing connection attempts 7245 #endif 7246 } 7247 7248 void hci_le_random_address_set(const bd_addr_t random_address){ 7249 memcpy(hci_stack->le_random_address, random_address, 6); 7250 hci_stack->le_random_address_set = true; 7251 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7252 hci_run(); 7253 } 7254 7255 #endif 7256 7257 uint8_t gap_disconnect(hci_con_handle_t handle){ 7258 hci_connection_t * conn = hci_connection_for_handle(handle); 7259 if (!conn){ 7260 hci_emit_disconnection_complete(handle, 0); 7261 return 0; 7262 } 7263 // ignore if already disconnected 7264 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7265 return 0; 7266 } 7267 conn->state = SEND_DISCONNECT; 7268 hci_run(); 7269 return 0; 7270 } 7271 7272 int gap_read_rssi(hci_con_handle_t con_handle){ 7273 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7274 if (hci_connection == NULL) return 0; 7275 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7276 hci_run(); 7277 return 1; 7278 } 7279 7280 /** 7281 * @brief Get connection type 7282 * @param con_handle 7283 * @result connection_type 7284 */ 7285 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7286 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7287 if (!conn) return GAP_CONNECTION_INVALID; 7288 switch (conn->address_type){ 7289 case BD_ADDR_TYPE_LE_PUBLIC: 7290 case BD_ADDR_TYPE_LE_RANDOM: 7291 return GAP_CONNECTION_LE; 7292 case BD_ADDR_TYPE_SCO: 7293 return GAP_CONNECTION_SCO; 7294 case BD_ADDR_TYPE_ACL: 7295 return GAP_CONNECTION_ACL; 7296 default: 7297 return GAP_CONNECTION_INVALID; 7298 } 7299 } 7300 7301 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7302 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7303 if (!conn) return HCI_ROLE_INVALID; 7304 return (hci_role_t) conn->role; 7305 } 7306 7307 7308 #ifdef ENABLE_CLASSIC 7309 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7310 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7311 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7312 conn->request_role = role; 7313 hci_run(); 7314 return ERROR_CODE_SUCCESS; 7315 } 7316 #endif 7317 7318 #ifdef ENABLE_BLE 7319 7320 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){ 7321 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7322 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7323 7324 conn->le_phy_update_all_phys = all_phys; 7325 conn->le_phy_update_tx_phys = tx_phys; 7326 conn->le_phy_update_rx_phys = rx_phys; 7327 conn->le_phy_update_phy_options = phy_options; 7328 7329 hci_run(); 7330 7331 return 0; 7332 } 7333 7334 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7335 // check if already in list 7336 btstack_linked_list_iterator_t it; 7337 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7338 while (btstack_linked_list_iterator_has_next(&it)) { 7339 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7340 if (entry->address_type != address_type) { 7341 continue; 7342 } 7343 if (memcmp(entry->address, address, 6) != 0) { 7344 continue; 7345 } 7346 // disallow if already scheduled to add 7347 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7348 return ERROR_CODE_COMMAND_DISALLOWED; 7349 } 7350 // still on controller, but scheduled to remove -> re-add 7351 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7352 return ERROR_CODE_SUCCESS; 7353 } 7354 // alloc and add to list 7355 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7356 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7357 entry->address_type = address_type; 7358 (void)memcpy(entry->address, address, 6); 7359 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7360 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7361 return ERROR_CODE_SUCCESS; 7362 } 7363 7364 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7365 btstack_linked_list_iterator_t it; 7366 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7367 while (btstack_linked_list_iterator_has_next(&it)){ 7368 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7369 if (entry->address_type != address_type) { 7370 continue; 7371 } 7372 if (memcmp(entry->address, address, 6) != 0) { 7373 continue; 7374 } 7375 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7376 // remove from controller if already present 7377 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7378 } else { 7379 // directly remove entry from whitelist 7380 btstack_linked_list_iterator_remove(&it); 7381 btstack_memory_whitelist_entry_free(entry); 7382 } 7383 return ERROR_CODE_SUCCESS; 7384 } 7385 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7386 } 7387 7388 static void hci_whitelist_clear(void){ 7389 btstack_linked_list_iterator_t it; 7390 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7391 while (btstack_linked_list_iterator_has_next(&it)){ 7392 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7393 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7394 // remove from controller if already present 7395 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7396 continue; 7397 } 7398 // directly remove entry from whitelist 7399 btstack_linked_list_iterator_remove(&it); 7400 btstack_memory_whitelist_entry_free(entry); 7401 } 7402 } 7403 7404 // free all entries unconditionally 7405 static void hci_whitelist_free(void){ 7406 btstack_linked_list_iterator_t lit; 7407 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 7408 while (btstack_linked_list_iterator_has_next(&lit)){ 7409 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 7410 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 7411 btstack_memory_whitelist_entry_free(entry); 7412 } 7413 } 7414 7415 /** 7416 * @brief Clear Whitelist 7417 * @return 0 if ok 7418 */ 7419 uint8_t gap_whitelist_clear(void){ 7420 hci_whitelist_clear(); 7421 hci_run(); 7422 return ERROR_CODE_SUCCESS; 7423 } 7424 7425 /** 7426 * @brief Add Device to Whitelist 7427 * @param address_typ 7428 * @param address 7429 * @return 0 if ok 7430 */ 7431 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7432 uint8_t status = hci_whitelist_add(address_type, address); 7433 if (status){ 7434 return status; 7435 } 7436 hci_run(); 7437 return ERROR_CODE_SUCCESS; 7438 } 7439 7440 /** 7441 * @brief Remove Device from Whitelist 7442 * @param address_typ 7443 * @param address 7444 * @return 0 if ok 7445 */ 7446 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7447 uint8_t status = hci_whitelist_remove(address_type, address); 7448 if (status){ 7449 return status; 7450 } 7451 hci_run(); 7452 return ERROR_CODE_SUCCESS; 7453 } 7454 7455 #ifdef ENABLE_LE_CENTRAL 7456 /** 7457 * @brief Connect with Whitelist 7458 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 7459 * @return - if ok 7460 */ 7461 uint8_t gap_connect_with_whitelist(void){ 7462 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7463 return ERROR_CODE_COMMAND_DISALLOWED; 7464 } 7465 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7466 hci_run(); 7467 return ERROR_CODE_SUCCESS; 7468 } 7469 7470 /** 7471 * @brief Auto Connection Establishment - Start Connecting to device 7472 * @param address_typ 7473 * @param address 7474 * @return 0 if ok 7475 */ 7476 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 7477 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7478 return ERROR_CODE_COMMAND_DISALLOWED; 7479 } 7480 7481 uint8_t status = hci_whitelist_add(address_type, address); 7482 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 7483 return status; 7484 } 7485 7486 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7487 7488 hci_run(); 7489 return ERROR_CODE_SUCCESS; 7490 } 7491 7492 /** 7493 * @brief Auto Connection Establishment - Stop Connecting to device 7494 * @param address_typ 7495 * @param address 7496 * @return 0 if ok 7497 */ 7498 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 7499 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7500 return ERROR_CODE_COMMAND_DISALLOWED; 7501 } 7502 7503 hci_whitelist_remove(address_type, address); 7504 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 7505 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7506 } 7507 hci_run(); 7508 return 0; 7509 } 7510 7511 /** 7512 * @brief Auto Connection Establishment - Stop everything 7513 * @note Convenience function to stop all active auto connection attempts 7514 */ 7515 uint8_t gap_auto_connection_stop_all(void){ 7516 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 7517 return ERROR_CODE_COMMAND_DISALLOWED; 7518 } 7519 hci_whitelist_clear(); 7520 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7521 hci_run(); 7522 return ERROR_CODE_SUCCESS; 7523 } 7524 7525 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 7526 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7527 if (!conn) return 0; 7528 return conn->le_connection_interval; 7529 } 7530 #endif 7531 #endif 7532 7533 #ifdef ENABLE_CLASSIC 7534 /** 7535 * @brief Set Extended Inquiry Response data 7536 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 7537 * @note has to be done before stack starts up 7538 */ 7539 void gap_set_extended_inquiry_response(const uint8_t * data){ 7540 hci_stack->eir_data = data; 7541 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7542 hci_run(); 7543 } 7544 7545 /** 7546 * @brief Start GAP Classic Inquiry 7547 * @param duration in 1.28s units 7548 * @return 0 if ok 7549 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 7550 */ 7551 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 7552 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7553 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7554 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 7555 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7556 } 7557 hci_stack->inquiry_state = duration_in_1280ms_units; 7558 hci_stack->inquiry_max_period_length = 0; 7559 hci_stack->inquiry_min_period_length = 0; 7560 hci_run(); 7561 return 0; 7562 } 7563 7564 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 7565 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7566 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7567 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7568 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7569 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7570 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7571 7572 hci_stack->inquiry_state = duration; 7573 hci_stack->inquiry_max_period_length = max_period_length; 7574 hci_stack->inquiry_min_period_length = min_period_length; 7575 hci_run(); 7576 return 0; 7577 } 7578 7579 /** 7580 * @brief Stop GAP Classic Inquiry 7581 * @return 0 if ok 7582 */ 7583 int gap_inquiry_stop(void){ 7584 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 7585 // emit inquiry complete event, before it even started 7586 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 7587 hci_emit_event(event, sizeof(event), 1); 7588 return 0; 7589 } 7590 switch (hci_stack->inquiry_state){ 7591 case GAP_INQUIRY_STATE_ACTIVE: 7592 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 7593 hci_run(); 7594 return ERROR_CODE_SUCCESS; 7595 case GAP_INQUIRY_STATE_PERIODIC: 7596 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 7597 hci_run(); 7598 return ERROR_CODE_SUCCESS; 7599 default: 7600 return ERROR_CODE_COMMAND_DISALLOWED; 7601 } 7602 } 7603 7604 void gap_inquiry_set_lap(uint32_t lap){ 7605 hci_stack->inquiry_lap = lap; 7606 } 7607 7608 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 7609 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 7610 hci_stack->inquiry_scan_window = inquiry_scan_window; 7611 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 7612 hci_run(); 7613 } 7614 7615 7616 /** 7617 * @brief Remote Name Request 7618 * @param addr 7619 * @param page_scan_repetition_mode 7620 * @param clock_offset only used when bit 15 is set 7621 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 7622 */ 7623 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 7624 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7625 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 7626 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 7627 hci_stack->remote_name_clock_offset = clock_offset; 7628 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 7629 hci_run(); 7630 return 0; 7631 } 7632 7633 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 7634 hci_stack->gap_pairing_state = state; 7635 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 7636 hci_run(); 7637 return 0; 7638 } 7639 7640 /** 7641 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 7642 * @param addr 7643 * @param pin_data 7644 * @param pin_len 7645 * @return 0 if ok 7646 */ 7647 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 7648 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7649 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 7650 hci_stack->gap_pairing_pin_len = pin_len; 7651 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 7652 } 7653 7654 /** 7655 * @brief Legacy Pairing Pin Code Response 7656 * @param addr 7657 * @param pin 7658 * @return 0 if ok 7659 */ 7660 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 7661 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, strlen(pin)); 7662 } 7663 7664 /** 7665 * @brief Abort Legacy Pairing 7666 * @param addr 7667 * @param pin 7668 * @return 0 if ok 7669 */ 7670 int gap_pin_code_negative(bd_addr_t addr){ 7671 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7672 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 7673 } 7674 7675 /** 7676 * @brief SSP Passkey Response 7677 * @param addr 7678 * @param passkey 7679 * @return 0 if ok 7680 */ 7681 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 7682 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7683 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 7684 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 7685 } 7686 7687 /** 7688 * @brief Abort SSP Passkey Entry/Pairing 7689 * @param addr 7690 * @param pin 7691 * @return 0 if ok 7692 */ 7693 int gap_ssp_passkey_negative(const bd_addr_t addr){ 7694 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7695 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 7696 } 7697 7698 /** 7699 * @brief Accept SSP Numeric Comparison 7700 * @param addr 7701 * @param passkey 7702 * @return 0 if ok 7703 */ 7704 int gap_ssp_confirmation_response(const bd_addr_t addr){ 7705 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7706 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 7707 } 7708 7709 /** 7710 * @brief Abort SSP Numeric Comparison/Pairing 7711 * @param addr 7712 * @param pin 7713 * @return 0 if ok 7714 */ 7715 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 7716 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7717 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 7718 } 7719 7720 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 7721 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 7722 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7723 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7724 connectionSetAuthenticationFlags(conn, flag); 7725 hci_run(); 7726 return ERROR_CODE_SUCCESS; 7727 } 7728 #endif 7729 7730 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 7731 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 7732 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7733 } 7734 7735 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 7736 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7737 } 7738 #endif 7739 7740 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7741 /** 7742 * @brief Report Remote OOB Data 7743 * @param bd_addr 7744 * @param c_192 Simple Pairing Hash C derived from P-192 public key 7745 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 7746 * @param c_256 Simple Pairing Hash C derived from P-256 public key 7747 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 7748 */ 7749 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){ 7750 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7751 if (connection == NULL) { 7752 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7753 } 7754 connection->classic_oob_c_192 = c_192; 7755 connection->classic_oob_r_192 = r_192; 7756 7757 // ignore P-256 if not supported by us 7758 if (hci_stack->secure_connections_active){ 7759 connection->classic_oob_c_256 = c_256; 7760 connection->classic_oob_r_256 = r_256; 7761 } 7762 7763 return ERROR_CODE_SUCCESS; 7764 } 7765 /** 7766 * @brief Generate new OOB data 7767 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 7768 */ 7769 void gap_ssp_generate_oob_data(void){ 7770 hci_stack->classic_read_local_oob_data = true; 7771 hci_run(); 7772 } 7773 7774 #endif 7775 7776 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 7777 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 7778 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7779 if (connection == NULL) { 7780 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7781 } 7782 7783 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 7784 connection->link_key_type = type; 7785 7786 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7787 } 7788 7789 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 7790 /** 7791 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 7792 * @param inquiry_mode see bluetooth_defines.h 7793 */ 7794 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 7795 hci_stack->inquiry_mode = inquiry_mode; 7796 } 7797 7798 /** 7799 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 7800 */ 7801 void hci_set_sco_voice_setting(uint16_t voice_setting){ 7802 hci_stack->sco_voice_setting = voice_setting; 7803 } 7804 7805 /** 7806 * @brief Get SCO Voice Setting 7807 * @return current voice setting 7808 */ 7809 uint16_t hci_get_sco_voice_setting(void){ 7810 return hci_stack->sco_voice_setting; 7811 } 7812 7813 static int hci_have_usb_transport(void){ 7814 if (!hci_stack->hci_transport) return 0; 7815 const char * transport_name = hci_stack->hci_transport->name; 7816 if (!transport_name) return 0; 7817 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 7818 } 7819 7820 /** @brief Get SCO packet length for current SCO Voice setting 7821 * @note Using SCO packets of the exact length is required for USB transfer 7822 * @return Length of SCO packets in bytes (not audio frames) 7823 */ 7824 uint16_t hci_get_sco_packet_length(void){ 7825 uint16_t sco_packet_length = 0; 7826 7827 #ifdef ENABLE_SCO_OVER_HCI 7828 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 7829 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 7830 7831 if (hci_have_usb_transport()){ 7832 // see Core Spec for H2 USB Transfer. 7833 // 3 byte SCO header + 24 bytes per connection 7834 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 7835 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 7836 } else { 7837 // 3 byte SCO header + SCO packet size over the air (60 bytes) 7838 sco_packet_length = 3 + 60 * multiplier; 7839 // assert that it still fits inside an SCO buffer 7840 if (sco_packet_length > hci_stack->sco_data_packet_length){ 7841 sco_packet_length = 3 + 60; 7842 } 7843 } 7844 #endif 7845 7846 #ifdef HAVE_SCO_TRANSPORT 7847 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 7848 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 7849 sco_packet_length = 3 + 60 * multiplier; 7850 #endif 7851 return sco_packet_length; 7852 } 7853 7854 /** 7855 * @brief Sets the master/slave policy 7856 * @param policy (0: attempt to become master, 1: let connecting device decide) 7857 */ 7858 void hci_set_master_slave_policy(uint8_t policy){ 7859 hci_stack->master_slave_policy = policy; 7860 } 7861 7862 #endif 7863 7864 HCI_STATE hci_get_state(void){ 7865 return hci_stack->state; 7866 } 7867 7868 #ifdef ENABLE_CLASSIC 7869 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 7870 hci_stack->gap_classic_accept_callback = accept_callback; 7871 } 7872 #endif 7873 7874 /** 7875 * @brief Set callback for Bluetooth Hardware Error 7876 */ 7877 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 7878 hci_stack->hardware_error_callback = fn; 7879 } 7880 7881 void hci_disconnect_all(void){ 7882 btstack_linked_list_iterator_t it; 7883 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 7884 while (btstack_linked_list_iterator_has_next(&it)){ 7885 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 7886 if (con->state == SENT_DISCONNECT) continue; 7887 con->state = SEND_DISCONNECT; 7888 } 7889 hci_run(); 7890 } 7891 7892 uint16_t hci_get_manufacturer(void){ 7893 return hci_stack->manufacturer; 7894 } 7895 7896 #ifdef ENABLE_BLE 7897 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 7898 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 7899 if (!hci_con) return NULL; 7900 return &hci_con->sm_connection; 7901 } 7902 7903 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 7904 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 7905 #endif 7906 7907 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 7908 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7909 if (hci_connection == NULL) return 0; 7910 if (hci_is_le_connection(hci_connection)){ 7911 #ifdef ENABLE_BLE 7912 sm_connection_t * sm_conn = &hci_connection->sm_connection; 7913 if (sm_conn->sm_connection_encrypted) { 7914 return sm_conn->sm_actual_encryption_key_size; 7915 } 7916 #endif 7917 } else { 7918 #ifdef ENABLE_CLASSIC 7919 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 7920 return hci_connection->encryption_key_size; 7921 } 7922 #endif 7923 } 7924 return 0; 7925 } 7926 7927 bool gap_authenticated(hci_con_handle_t con_handle){ 7928 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7929 if (hci_connection == NULL) return false; 7930 7931 switch (hci_connection->address_type){ 7932 #ifdef ENABLE_BLE 7933 case BD_ADDR_TYPE_LE_PUBLIC: 7934 case BD_ADDR_TYPE_LE_RANDOM: 7935 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 7936 return hci_connection->sm_connection.sm_connection_authenticated != 0; 7937 #endif 7938 #ifdef ENABLE_CLASSIC 7939 case BD_ADDR_TYPE_SCO: 7940 case BD_ADDR_TYPE_ACL: 7941 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 7942 #endif 7943 default: 7944 return false; 7945 } 7946 } 7947 7948 bool gap_secure_connection(hci_con_handle_t con_handle){ 7949 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7950 if (hci_connection == NULL) return 0; 7951 7952 switch (hci_connection->address_type){ 7953 #ifdef ENABLE_BLE 7954 case BD_ADDR_TYPE_LE_PUBLIC: 7955 case BD_ADDR_TYPE_LE_RANDOM: 7956 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 7957 return hci_connection->sm_connection.sm_connection_sc != 0; 7958 #endif 7959 #ifdef ENABLE_CLASSIC 7960 case BD_ADDR_TYPE_SCO: 7961 case BD_ADDR_TYPE_ACL: 7962 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 7963 #endif 7964 default: 7965 return false; 7966 } 7967 } 7968 7969 bool gap_bonded(hci_con_handle_t con_handle){ 7970 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7971 if (hci_connection == NULL) return 0; 7972 7973 #ifdef ENABLE_CLASSIC 7974 link_key_t link_key; 7975 link_key_type_t link_key_type; 7976 #endif 7977 switch (hci_connection->address_type){ 7978 #ifdef ENABLE_BLE 7979 case BD_ADDR_TYPE_LE_PUBLIC: 7980 case BD_ADDR_TYPE_LE_RANDOM: 7981 return hci_connection->sm_connection.sm_le_db_index >= 0; 7982 #endif 7983 #ifdef ENABLE_CLASSIC 7984 case BD_ADDR_TYPE_SCO: 7985 case BD_ADDR_TYPE_ACL: 7986 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 7987 #endif 7988 default: 7989 return false; 7990 } 7991 } 7992 7993 #ifdef ENABLE_BLE 7994 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 7995 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 7996 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 7997 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 7998 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 7999 return sm_conn->sm_connection_authorization_state; 8000 } 8001 #endif 8002 8003 #ifdef ENABLE_CLASSIC 8004 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){ 8005 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8006 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8007 conn->sniff_min_interval = sniff_min_interval; 8008 conn->sniff_max_interval = sniff_max_interval; 8009 conn->sniff_attempt = sniff_attempt; 8010 conn->sniff_timeout = sniff_timeout; 8011 hci_run(); 8012 return 0; 8013 } 8014 8015 /** 8016 * @brief Exit Sniff mode 8017 * @param con_handle 8018 @ @return 0 if ok 8019 */ 8020 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8021 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8022 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8023 conn->sniff_min_interval = 0xffff; 8024 hci_run(); 8025 return 0; 8026 } 8027 8028 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){ 8029 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8030 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8031 conn->sniff_subrating_max_latency = max_latency; 8032 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8033 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8034 hci_run(); 8035 return ERROR_CODE_SUCCESS; 8036 } 8037 8038 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){ 8039 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8040 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8041 conn->qos_service_type = service_type; 8042 conn->qos_token_rate = token_rate; 8043 conn->qos_peak_bandwidth = peak_bandwidth; 8044 conn->qos_latency = latency; 8045 conn->qos_delay_variation = delay_variation; 8046 hci_run(); 8047 return ERROR_CODE_SUCCESS; 8048 } 8049 8050 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8051 hci_stack->new_page_scan_interval = page_scan_interval; 8052 hci_stack->new_page_scan_window = page_scan_window; 8053 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8054 hci_run(); 8055 } 8056 8057 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8058 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8059 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8060 hci_run(); 8061 } 8062 8063 void gap_set_page_timeout(uint16_t page_timeout){ 8064 hci_stack->page_timeout = page_timeout; 8065 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8066 hci_run(); 8067 } 8068 8069 #endif 8070 8071 void hci_halting_defer(void){ 8072 if (hci_stack->state != HCI_STATE_HALTING) return; 8073 switch (hci_stack->substate){ 8074 case HCI_HALTING_READY_FOR_CLOSE: 8075 hci_stack->substate = HCI_HALTING_DEFER_CLOSE; 8076 break; 8077 default: 8078 break; 8079 } 8080 } 8081 8082 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8083 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8084 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8085 if (le_device_db_index >= le_device_db_max_count()) return; 8086 uint8_t offset = le_device_db_index >> 3; 8087 uint8_t mask = 1 << (le_device_db_index & 7); 8088 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8089 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8090 // note: go back to remove entries, otherwise, a remove + add will skip the add 8091 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8092 } 8093 } 8094 8095 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8096 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8097 if (le_device_db_index >= le_device_db_max_count()) return; 8098 uint8_t offset = le_device_db_index >> 3; 8099 uint8_t mask = 1 << (le_device_db_index & 7); 8100 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8101 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8102 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8103 } 8104 } 8105 8106 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8107 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8108 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8109 } 8110 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8111 // restart le resolving list update 8112 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8113 } 8114 return ERROR_CODE_SUCCESS; 8115 } 8116 #endif 8117 8118 #ifdef ENABLE_BLE 8119 #ifdef ENABLE_LE_CENTRAL 8120 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8121 8122 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8123 // check if already in list 8124 btstack_linked_list_iterator_t it; 8125 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8126 while (btstack_linked_list_iterator_has_next(&it)) { 8127 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8128 if (entry->sid != advertising_sid) { 8129 continue; 8130 } 8131 if (entry->address_type != address_type) { 8132 continue; 8133 } 8134 if (memcmp(entry->address, address, 6) != 0) { 8135 continue; 8136 } 8137 // disallow if already scheduled to add 8138 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8139 return ERROR_CODE_COMMAND_DISALLOWED; 8140 } 8141 // still on controller, but scheduled to remove -> re-add 8142 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8143 return ERROR_CODE_SUCCESS; 8144 } 8145 // alloc and add to list 8146 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8147 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8148 entry->sid = advertising_sid; 8149 entry->address_type = address_type; 8150 (void)memcpy(entry->address, address, 6); 8151 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8152 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8153 return ERROR_CODE_SUCCESS; 8154 } 8155 8156 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8157 btstack_linked_list_iterator_t it; 8158 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8159 while (btstack_linked_list_iterator_has_next(&it)){ 8160 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8161 if (entry->sid != advertising_sid) { 8162 continue; 8163 } 8164 if (entry->address_type != address_type) { 8165 continue; 8166 } 8167 if (memcmp(entry->address, address, 6) != 0) { 8168 continue; 8169 } 8170 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8171 // remove from controller if already present 8172 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8173 } else { 8174 // directly remove entry from whitelist 8175 btstack_linked_list_iterator_remove(&it); 8176 btstack_memory_periodic_advertiser_list_entry_free(entry); 8177 } 8178 return ERROR_CODE_SUCCESS; 8179 } 8180 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8181 } 8182 8183 static void hci_periodic_advertiser_list_clear(void){ 8184 btstack_linked_list_iterator_t it; 8185 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8186 while (btstack_linked_list_iterator_has_next(&it)){ 8187 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8188 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8189 // remove from controller if already present 8190 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8191 continue; 8192 } 8193 // directly remove entry from whitelist 8194 btstack_linked_list_iterator_remove(&it); 8195 btstack_memory_periodic_advertiser_list_entry_free(entry); 8196 } 8197 } 8198 8199 // free all entries unconditionally 8200 static void hci_periodic_advertiser_list_free(void){ 8201 btstack_linked_list_iterator_t lit; 8202 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8203 while (btstack_linked_list_iterator_has_next(&lit)){ 8204 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8205 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8206 btstack_memory_periodic_advertiser_list_entry_free(entry); 8207 } 8208 } 8209 8210 uint8_t gap_periodic_advertiser_list_clear(void){ 8211 hci_periodic_advertiser_list_clear(); 8212 hci_run(); 8213 return ERROR_CODE_SUCCESS; 8214 } 8215 8216 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8217 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8218 if (status){ 8219 return status; 8220 } 8221 hci_run(); 8222 return ERROR_CODE_SUCCESS; 8223 } 8224 8225 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8226 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8227 if (status){ 8228 return status; 8229 } 8230 hci_run(); 8231 return ERROR_CODE_SUCCESS; 8232 } 8233 8234 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8235 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8236 // abort if already active 8237 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8238 return ERROR_CODE_COMMAND_DISALLOWED; 8239 } 8240 // store request 8241 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8242 hci_stack->le_periodic_sync_options = options; 8243 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8244 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8245 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8246 hci_stack->le_periodic_sync_skip = skip; 8247 hci_stack->le_periodic_sync_timeout = sync_timeout; 8248 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8249 8250 hci_run(); 8251 return ERROR_CODE_SUCCESS; 8252 } 8253 8254 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8255 // abort if not requested 8256 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8257 return ERROR_CODE_COMMAND_DISALLOWED; 8258 } 8259 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8260 hci_run(); 8261 return ERROR_CODE_SUCCESS; 8262 } 8263 8264 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8265 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8266 return ERROR_CODE_COMMAND_DISALLOWED; 8267 } 8268 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8269 hci_run(); 8270 return ERROR_CODE_SUCCESS; 8271 } 8272 8273 #endif 8274 #endif 8275 #endif 8276 8277 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 8278 void hci_setup_test_connections_fuzz(void){ 8279 hci_connection_t * conn; 8280 8281 // default address: 66:55:44:33:00:01 8282 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 8283 8284 // setup Controller info 8285 hci_stack->num_cmd_packets = 255; 8286 hci_stack->acl_packets_total_num = 255; 8287 8288 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 8289 addr[5] = 0x01; 8290 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8291 conn->con_handle = addr[5]; 8292 conn->role = HCI_ROLE_SLAVE; 8293 conn->state = RECEIVED_CONNECTION_REQUEST; 8294 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8295 8296 // setup incoming Classic SCO connection with con handle 0x0002 8297 addr[5] = 0x02; 8298 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8299 conn->con_handle = addr[5]; 8300 conn->role = HCI_ROLE_SLAVE; 8301 conn->state = RECEIVED_CONNECTION_REQUEST; 8302 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8303 8304 // setup ready Classic ACL connection with con handle 0x0003 8305 addr[5] = 0x03; 8306 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8307 conn->con_handle = addr[5]; 8308 conn->role = HCI_ROLE_SLAVE; 8309 conn->state = OPEN; 8310 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8311 8312 // setup ready Classic SCO connection with con handle 0x0004 8313 addr[5] = 0x04; 8314 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8315 conn->con_handle = addr[5]; 8316 conn->role = HCI_ROLE_SLAVE; 8317 conn->state = OPEN; 8318 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8319 8320 // setup ready LE ACL connection with con handle 0x005 and public address 8321 addr[5] = 0x05; 8322 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 8323 conn->con_handle = addr[5]; 8324 conn->role = HCI_ROLE_SLAVE; 8325 conn->state = OPEN; 8326 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8327 conn->sm_connection.sm_connection_encrypted = 1; 8328 } 8329 8330 void hci_free_connections_fuzz(void){ 8331 btstack_linked_list_iterator_t it; 8332 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8333 while (btstack_linked_list_iterator_has_next(&it)){ 8334 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8335 btstack_linked_list_iterator_remove(&it); 8336 btstack_memory_hci_connection_free(con); 8337 } 8338 } 8339 void hci_simulate_working_fuzz(void){ 8340 hci_stack->le_scanning_param_update = false; 8341 hci_init_done(); 8342 hci_stack->num_cmd_packets = 255; 8343 } 8344 #endif 8345